annotate src/os/solaris/vm/os_solaris.cpp @ 61:5a76ab815e34

6667833: Remove CacheTimeMillis Summary: Remove -XX:+CacheTimeMillis option and associated functionality Reviewed-by: acorn, never
author sbohne
date Wed, 19 Mar 2008 09:58:01 -0400
parents 8d84e28e68ba
children 82db0859acbe
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1 /*
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2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 // do not include precompiled header file
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26 # include "incls/_os_solaris.cpp.incl"
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27
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28 // put OS-includes here
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29 # include <dlfcn.h>
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30 # include <errno.h>
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31 # include <link.h>
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32 # include <poll.h>
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33 # include <pthread.h>
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34 # include <pwd.h>
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35 # include <schedctl.h>
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36 # include <setjmp.h>
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37 # include <signal.h>
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38 # include <stdio.h>
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39 # include <alloca.h>
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40 # include <sys/filio.h>
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41 # include <sys/ipc.h>
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42 # include <sys/lwp.h>
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43 # include <sys/machelf.h> // for elf Sym structure used by dladdr1
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44 # include <sys/mman.h>
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45 # include <sys/processor.h>
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46 # include <sys/procset.h>
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47 # include <sys/pset.h>
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48 # include <sys/resource.h>
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49 # include <sys/shm.h>
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50 # include <sys/socket.h>
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51 # include <sys/stat.h>
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52 # include <sys/systeminfo.h>
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53 # include <sys/time.h>
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54 # include <sys/times.h>
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55 # include <sys/types.h>
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56 # include <sys/wait.h>
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57 # include <sys/utsname.h>
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58 # include <thread.h>
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59 # include <unistd.h>
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60 # include <sys/priocntl.h>
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61 # include <sys/rtpriocntl.h>
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62 # include <sys/tspriocntl.h>
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63 # include <sys/iapriocntl.h>
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64 # include <sys/loadavg.h>
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65 # include <string.h>
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66
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67 # define _STRUCTURED_PROC 1 // this gets us the new structured proc interfaces of 5.6 & later
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68 # include <sys/procfs.h> // see comment in <sys/procfs.h>
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69
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70 #define MAX_PATH (2 * K)
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71
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72 // for timer info max values which include all bits
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73 #define ALL_64_BITS CONST64(0xFFFFFFFFFFFFFFFF)
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74
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75 #ifdef _GNU_SOURCE
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76 // See bug #6514594
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77 extern "C" int madvise(caddr_t, size_t, int);
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78 extern "C" int memcntl(caddr_t addr, size_t len, int cmd, caddr_t arg,
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79 int attr, int mask);
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80 #endif //_GNU_SOURCE
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81
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82 /*
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83 MPSS Changes Start.
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84 The JVM binary needs to be built and run on pre-Solaris 9
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85 systems, but the constants needed by MPSS are only in Solaris 9
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86 header files. They are textually replicated here to allow
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87 building on earlier systems. Once building on Solaris 8 is
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88 no longer a requirement, these #defines can be replaced by ordinary
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89 system .h inclusion.
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90
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91 In earlier versions of the JDK and Solaris, we used ISM for large pages.
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92 But ISM requires shared memory to achieve this and thus has many caveats.
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93 MPSS is a fully transparent and is a cleaner way to get large pages.
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94 Although we still require keeping ISM for backward compatiblitiy as well as
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95 giving the opportunity to use large pages on older systems it is
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96 recommended that MPSS be used for Solaris 9 and above.
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97
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98 */
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99
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100 #ifndef MC_HAT_ADVISE
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101
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102 struct memcntl_mha {
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103 uint_t mha_cmd; /* command(s) */
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104 uint_t mha_flags;
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105 size_t mha_pagesize;
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106 };
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107 #define MC_HAT_ADVISE 7 /* advise hat map size */
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108 #define MHA_MAPSIZE_VA 0x1 /* set preferred page size */
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109 #define MAP_ALIGN 0x200 /* addr specifies alignment */
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110
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111 #endif
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112 // MPSS Changes End.
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113
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114
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115 // Here are some liblgrp types from sys/lgrp_user.h to be able to
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116 // compile on older systems without this header file.
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117
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118 #ifndef MADV_ACCESS_LWP
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119 # define MADV_ACCESS_LWP 7 /* next LWP to access heavily */
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120 #endif
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121 #ifndef MADV_ACCESS_MANY
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122 # define MADV_ACCESS_MANY 8 /* many processes to access heavily */
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123 #endif
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124
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125 // Some more macros from sys/mman.h that are not present in Solaris 8.
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126
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127 #ifndef MAX_MEMINFO_CNT
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128 /*
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129 * info_req request type definitions for meminfo
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130 * request types starting with MEMINFO_V are used for Virtual addresses
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131 * and should not be mixed with MEMINFO_PLGRP which is targeted for Physical
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132 * addresses
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133 */
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134 # define MEMINFO_SHIFT 16
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135 # define MEMINFO_MASK (0xFF << MEMINFO_SHIFT)
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136 # define MEMINFO_VPHYSICAL (0x01 << MEMINFO_SHIFT) /* get physical addr */
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137 # define MEMINFO_VLGRP (0x02 << MEMINFO_SHIFT) /* get lgroup */
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138 # define MEMINFO_VPAGESIZE (0x03 << MEMINFO_SHIFT) /* size of phys page */
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139 # define MEMINFO_VREPLCNT (0x04 << MEMINFO_SHIFT) /* no. of replica */
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140 # define MEMINFO_VREPL (0x05 << MEMINFO_SHIFT) /* physical replica */
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141 # define MEMINFO_VREPL_LGRP (0x06 << MEMINFO_SHIFT) /* lgrp of replica */
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142 # define MEMINFO_PLGRP (0x07 << MEMINFO_SHIFT) /* lgroup for paddr */
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143
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144 /* maximum number of addresses meminfo() can process at a time */
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145 # define MAX_MEMINFO_CNT 256
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146
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147 /* maximum number of request types */
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148 # define MAX_MEMINFO_REQ 31
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149 #endif
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150
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151 // see thr_setprio(3T) for the basis of these numbers
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152 #define MinimumPriority 0
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153 #define NormalPriority 64
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154 #define MaximumPriority 127
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155
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156 // Values for ThreadPriorityPolicy == 1
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157 int prio_policy1[MaxPriority+1] = { -99999, 0, 16, 32, 48, 64,
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158 80, 96, 112, 124, 127 };
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159
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160 // System parameters used internally
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161 static clock_t clock_tics_per_sec = 100;
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162
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163 // For diagnostics to print a message once. see run_periodic_checks
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164 static bool check_addr0_done = false;
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165 static sigset_t check_signal_done;
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166 static bool check_signals = true;
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167
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168 address os::Solaris::handler_start; // start pc of thr_sighndlrinfo
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169 address os::Solaris::handler_end; // end pc of thr_sighndlrinfo
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170
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171 address os::Solaris::_main_stack_base = NULL; // 4352906 workaround
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172
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173
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174 // "default" initializers for missing libc APIs
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175 extern "C" {
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176 static int lwp_mutex_init(mutex_t *mx, int scope, void *arg) { memset(mx, 0, sizeof(mutex_t)); return 0; }
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177 static int lwp_mutex_destroy(mutex_t *mx) { return 0; }
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178
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179 static int lwp_cond_init(cond_t *cv, int scope, void *arg){ memset(cv, 0, sizeof(cond_t)); return 0; }
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180 static int lwp_cond_destroy(cond_t *cv) { return 0; }
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181 }
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182
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183 // "default" initializers for pthread-based synchronization
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184 extern "C" {
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185 static int pthread_mutex_default_init(mutex_t *mx, int scope, void *arg) { memset(mx, 0, sizeof(mutex_t)); return 0; }
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186 static int pthread_cond_default_init(cond_t *cv, int scope, void *arg){ memset(cv, 0, sizeof(cond_t)); return 0; }
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187 }
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188
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189 // Thread Local Storage
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190 // This is common to all Solaris platforms so it is defined here,
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191 // in this common file.
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192 // The declarations are in the os_cpu threadLS*.hpp files.
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193 //
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194 // Static member initialization for TLS
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195 Thread* ThreadLocalStorage::_get_thread_cache[ThreadLocalStorage::_pd_cache_size] = {NULL};
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196
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197 #ifndef PRODUCT
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198 #define _PCT(n,d) ((100.0*(double)(n))/(double)(d))
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199
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200 int ThreadLocalStorage::_tcacheHit = 0;
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201 int ThreadLocalStorage::_tcacheMiss = 0;
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202
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203 void ThreadLocalStorage::print_statistics() {
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204 int total = _tcacheMiss+_tcacheHit;
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205 tty->print_cr("Thread cache hits %d misses %d total %d percent %f\n",
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206 _tcacheHit, _tcacheMiss, total, _PCT(_tcacheHit, total));
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207 }
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208 #undef _PCT
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209 #endif // PRODUCT
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210
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211 Thread* ThreadLocalStorage::get_thread_via_cache_slowly(uintptr_t raw_id,
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212 int index) {
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213 Thread *thread = get_thread_slow();
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214 if (thread != NULL) {
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215 address sp = os::current_stack_pointer();
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216 guarantee(thread->_stack_base == NULL ||
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217 (sp <= thread->_stack_base &&
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218 sp >= thread->_stack_base - thread->_stack_size) ||
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219 is_error_reported(),
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220 "sp must be inside of selected thread stack");
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221
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222 thread->_self_raw_id = raw_id; // mark for quick retrieval
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223 _get_thread_cache[ index ] = thread;
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224 }
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225 return thread;
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226 }
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227
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228
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229 static const double all_zero[ sizeof(Thread) / sizeof(double) + 1 ] = {0};
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230 #define NO_CACHED_THREAD ((Thread*)all_zero)
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231
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232 void ThreadLocalStorage::pd_set_thread(Thread* thread) {
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233
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234 // Store the new value before updating the cache to prevent a race
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235 // between get_thread_via_cache_slowly() and this store operation.
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236 os::thread_local_storage_at_put(ThreadLocalStorage::thread_index(), thread);
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237
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238 // Update thread cache with new thread if setting on thread create,
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239 // or NO_CACHED_THREAD (zeroed) thread if resetting thread on exit.
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240 uintptr_t raw = pd_raw_thread_id();
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241 int ix = pd_cache_index(raw);
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242 _get_thread_cache[ix] = thread == NULL ? NO_CACHED_THREAD : thread;
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243 }
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244
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245 void ThreadLocalStorage::pd_init() {
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246 for (int i = 0; i < _pd_cache_size; i++) {
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247 _get_thread_cache[i] = NO_CACHED_THREAD;
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248 }
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249 }
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250
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251 // Invalidate all the caches (happens to be the same as pd_init).
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252 void ThreadLocalStorage::pd_invalidate_all() { pd_init(); }
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253
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254 #undef NO_CACHED_THREAD
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255
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256 // END Thread Local Storage
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257
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258 static inline size_t adjust_stack_size(address base, size_t size) {
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259 if ((ssize_t)size < 0) {
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260 // 4759953: Compensate for ridiculous stack size.
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261 size = max_intx;
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262 }
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263 if (size > (size_t)base) {
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264 // 4812466: Make sure size doesn't allow the stack to wrap the address space.
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265 size = (size_t)base;
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266 }
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267 return size;
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268 }
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269
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270 static inline stack_t get_stack_info() {
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271 stack_t st;
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272 int retval = thr_stksegment(&st);
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273 st.ss_size = adjust_stack_size((address)st.ss_sp, st.ss_size);
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274 assert(retval == 0, "incorrect return value from thr_stksegment");
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275 assert((address)&st < (address)st.ss_sp, "Invalid stack base returned");
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276 assert((address)&st > (address)st.ss_sp-st.ss_size, "Invalid stack size returned");
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277 return st;
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278 }
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279
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280 address os::current_stack_base() {
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281 int r = thr_main() ;
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282 guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ;
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283 bool is_primordial_thread = r;
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284
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285 // Workaround 4352906, avoid calls to thr_stksegment by
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286 // thr_main after the first one (it looks like we trash
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287 // some data, causing the value for ss_sp to be incorrect).
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288 if (!is_primordial_thread || os::Solaris::_main_stack_base == NULL) {
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289 stack_t st = get_stack_info();
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290 if (is_primordial_thread) {
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291 // cache initial value of stack base
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292 os::Solaris::_main_stack_base = (address)st.ss_sp;
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293 }
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294 return (address)st.ss_sp;
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295 } else {
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296 guarantee(os::Solaris::_main_stack_base != NULL, "Attempt to use null cached stack base");
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297 return os::Solaris::_main_stack_base;
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298 }
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299 }
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300
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301 size_t os::current_stack_size() {
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302 size_t size;
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303
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304 int r = thr_main() ;
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305 guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ;
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306 if(!r) {
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307 size = get_stack_info().ss_size;
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308 } else {
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309 struct rlimit limits;
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310 getrlimit(RLIMIT_STACK, &limits);
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311 size = adjust_stack_size(os::Solaris::_main_stack_base, (size_t)limits.rlim_cur);
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312 }
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313 // base may not be page aligned
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314 address base = current_stack_base();
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315 address bottom = (address)align_size_up((intptr_t)(base - size), os::vm_page_size());;
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316 return (size_t)(base - bottom);
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317 }
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318
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319 // interruptible infrastructure
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320
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321 // setup_interruptible saves the thread state before going into an
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322 // interruptible system call.
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323 // The saved state is used to restore the thread to
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324 // its former state whether or not an interrupt is received.
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325 // Used by classloader os::read
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326 // hpi calls skip this layer and stay in _thread_in_native
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327
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328 void os::Solaris::setup_interruptible(JavaThread* thread) {
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329
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330 JavaThreadState thread_state = thread->thread_state();
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331
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332 assert(thread_state != _thread_blocked, "Coming from the wrong thread");
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333 assert(thread_state != _thread_in_native, "Native threads skip setup_interruptible");
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334 OSThread* osthread = thread->osthread();
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335 osthread->set_saved_interrupt_thread_state(thread_state);
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336 thread->frame_anchor()->make_walkable(thread);
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337 ThreadStateTransition::transition(thread, thread_state, _thread_blocked);
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338 }
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339
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340 // Version of setup_interruptible() for threads that are already in
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341 // _thread_blocked. Used by os_sleep().
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342 void os::Solaris::setup_interruptible_already_blocked(JavaThread* thread) {
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343 thread->frame_anchor()->make_walkable(thread);
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344 }
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345
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346 JavaThread* os::Solaris::setup_interruptible() {
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347 JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread();
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348 setup_interruptible(thread);
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349 return thread;
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350 }
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351
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352 void os::Solaris::try_enable_extended_io() {
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353 typedef int (*enable_extended_FILE_stdio_t)(int, int);
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354
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355 if (!UseExtendedFileIO) {
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356 return;
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357 }
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358
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359 enable_extended_FILE_stdio_t enabler =
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360 (enable_extended_FILE_stdio_t) dlsym(RTLD_DEFAULT,
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361 "enable_extended_FILE_stdio");
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362 if (enabler) {
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363 enabler(-1, -1);
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364 }
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365 }
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366
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367
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368 #ifdef ASSERT
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369
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370 JavaThread* os::Solaris::setup_interruptible_native() {
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371 JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread();
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372 JavaThreadState thread_state = thread->thread_state();
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373 assert(thread_state == _thread_in_native, "Assumed thread_in_native");
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374 return thread;
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375 }
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376
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377 void os::Solaris::cleanup_interruptible_native(JavaThread* thread) {
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378 JavaThreadState thread_state = thread->thread_state();
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379 assert(thread_state == _thread_in_native, "Assumed thread_in_native");
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380 }
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381 #endif
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382
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383 // cleanup_interruptible reverses the effects of setup_interruptible
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384 // setup_interruptible_already_blocked() does not need any cleanup.
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385
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386 void os::Solaris::cleanup_interruptible(JavaThread* thread) {
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387 OSThread* osthread = thread->osthread();
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388
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389 ThreadStateTransition::transition(thread, _thread_blocked, osthread->saved_interrupt_thread_state());
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390 }
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391
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392 // I/O interruption related counters called in _INTERRUPTIBLE
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393
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394 void os::Solaris::bump_interrupted_before_count() {
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395 RuntimeService::record_interrupted_before_count();
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396 }
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397
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398 void os::Solaris::bump_interrupted_during_count() {
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399 RuntimeService::record_interrupted_during_count();
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400 }
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401
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402 static int _processors_online = 0;
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403
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404 jint os::Solaris::_os_thread_limit = 0;
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405 volatile jint os::Solaris::_os_thread_count = 0;
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406
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407 julong os::available_memory() {
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408 return Solaris::available_memory();
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409 }
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410
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411 julong os::Solaris::available_memory() {
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412 return (julong)sysconf(_SC_AVPHYS_PAGES) * os::vm_page_size();
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413 }
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414
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415 julong os::Solaris::_physical_memory = 0;
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416
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417 julong os::physical_memory() {
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418 return Solaris::physical_memory();
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419 }
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420
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421 julong os::allocatable_physical_memory(julong size) {
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422 #ifdef _LP64
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423 return size;
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424 #else
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425 julong result = MIN2(size, (julong)3835*M);
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426 if (!is_allocatable(result)) {
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427 // Memory allocations will be aligned but the alignment
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428 // is not known at this point. Alignments will
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429 // be at most to LargePageSizeInBytes. Protect
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430 // allocations from alignments up to illegal
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431 // values. If at this point 2G is illegal.
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432 julong reasonable_size = (julong)2*G - 2 * LargePageSizeInBytes;
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433 result = MIN2(size, reasonable_size);
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434 }
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435 return result;
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436 #endif
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437 }
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438
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439 static hrtime_t first_hrtime = 0;
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440 static const hrtime_t hrtime_hz = 1000*1000*1000;
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441 const int LOCK_BUSY = 1;
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442 const int LOCK_FREE = 0;
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443 const int LOCK_INVALID = -1;
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parents:
diff changeset
444 static volatile hrtime_t max_hrtime = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
445 static volatile int max_hrtime_lock = LOCK_FREE; // Update counter with LSB as lock-in-progress
a61af66fc99e Initial load
duke
parents:
diff changeset
446
a61af66fc99e Initial load
duke
parents:
diff changeset
447
a61af66fc99e Initial load
duke
parents:
diff changeset
448 void os::Solaris::initialize_system_info() {
a61af66fc99e Initial load
duke
parents:
diff changeset
449 _processor_count = sysconf(_SC_NPROCESSORS_CONF);
a61af66fc99e Initial load
duke
parents:
diff changeset
450 _processors_online = sysconf (_SC_NPROCESSORS_ONLN);
a61af66fc99e Initial load
duke
parents:
diff changeset
451 _physical_memory = (julong)sysconf(_SC_PHYS_PAGES) * (julong)sysconf(_SC_PAGESIZE);
a61af66fc99e Initial load
duke
parents:
diff changeset
452 }
a61af66fc99e Initial load
duke
parents:
diff changeset
453
a61af66fc99e Initial load
duke
parents:
diff changeset
454 int os::active_processor_count() {
a61af66fc99e Initial load
duke
parents:
diff changeset
455 int online_cpus = sysconf(_SC_NPROCESSORS_ONLN);
a61af66fc99e Initial load
duke
parents:
diff changeset
456 pid_t pid = getpid();
a61af66fc99e Initial load
duke
parents:
diff changeset
457 psetid_t pset = PS_NONE;
a61af66fc99e Initial load
duke
parents:
diff changeset
458 // Are we running in a processor set?
a61af66fc99e Initial load
duke
parents:
diff changeset
459 if (pset_bind(PS_QUERY, P_PID, pid, &pset) == 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
460 if (pset != PS_NONE) {
a61af66fc99e Initial load
duke
parents:
diff changeset
461 uint_t pset_cpus;
a61af66fc99e Initial load
duke
parents:
diff changeset
462 // Query number of cpus in processor set
a61af66fc99e Initial load
duke
parents:
diff changeset
463 if (pset_info(pset, NULL, &pset_cpus, NULL) == 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
464 assert(pset_cpus > 0 && pset_cpus <= online_cpus, "sanity check");
a61af66fc99e Initial load
duke
parents:
diff changeset
465 _processors_online = pset_cpus;
a61af66fc99e Initial load
duke
parents:
diff changeset
466 return pset_cpus;
a61af66fc99e Initial load
duke
parents:
diff changeset
467 }
a61af66fc99e Initial load
duke
parents:
diff changeset
468 }
a61af66fc99e Initial load
duke
parents:
diff changeset
469 }
a61af66fc99e Initial load
duke
parents:
diff changeset
470 // Otherwise return number of online cpus
a61af66fc99e Initial load
duke
parents:
diff changeset
471 return online_cpus;
a61af66fc99e Initial load
duke
parents:
diff changeset
472 }
a61af66fc99e Initial load
duke
parents:
diff changeset
473
a61af66fc99e Initial load
duke
parents:
diff changeset
474 static bool find_processors_in_pset(psetid_t pset,
a61af66fc99e Initial load
duke
parents:
diff changeset
475 processorid_t** id_array,
a61af66fc99e Initial load
duke
parents:
diff changeset
476 uint_t* id_length) {
a61af66fc99e Initial load
duke
parents:
diff changeset
477 bool result = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
478 // Find the number of processors in the processor set.
a61af66fc99e Initial load
duke
parents:
diff changeset
479 if (pset_info(pset, NULL, id_length, NULL) == 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
480 // Make up an array to hold their ids.
a61af66fc99e Initial load
duke
parents:
diff changeset
481 *id_array = NEW_C_HEAP_ARRAY(processorid_t, *id_length);
a61af66fc99e Initial load
duke
parents:
diff changeset
482 // Fill in the array with their processor ids.
a61af66fc99e Initial load
duke
parents:
diff changeset
483 if (pset_info(pset, NULL, id_length, *id_array) == 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
484 result = true;
a61af66fc99e Initial load
duke
parents:
diff changeset
485 }
a61af66fc99e Initial load
duke
parents:
diff changeset
486 }
a61af66fc99e Initial load
duke
parents:
diff changeset
487 return result;
a61af66fc99e Initial load
duke
parents:
diff changeset
488 }
a61af66fc99e Initial load
duke
parents:
diff changeset
489
a61af66fc99e Initial load
duke
parents:
diff changeset
490 // Callers of find_processors_online() must tolerate imprecise results --
a61af66fc99e Initial load
duke
parents:
diff changeset
491 // the system configuration can change asynchronously because of DR
a61af66fc99e Initial load
duke
parents:
diff changeset
492 // or explicit psradm operations.
a61af66fc99e Initial load
duke
parents:
diff changeset
493 //
a61af66fc99e Initial load
duke
parents:
diff changeset
494 // We also need to take care that the loop (below) terminates as the
a61af66fc99e Initial load
duke
parents:
diff changeset
495 // number of processors online can change between the _SC_NPROCESSORS_ONLN
a61af66fc99e Initial load
duke
parents:
diff changeset
496 // request and the loop that builds the list of processor ids. Unfortunately
a61af66fc99e Initial load
duke
parents:
diff changeset
497 // there's no reliable way to determine the maximum valid processor id,
a61af66fc99e Initial load
duke
parents:
diff changeset
498 // so we use a manifest constant, MAX_PROCESSOR_ID, instead. See p_online
a61af66fc99e Initial load
duke
parents:
diff changeset
499 // man pages, which claim the processor id set is "sparse, but
a61af66fc99e Initial load
duke
parents:
diff changeset
500 // not too sparse". MAX_PROCESSOR_ID is used to ensure that we eventually
a61af66fc99e Initial load
duke
parents:
diff changeset
501 // exit the loop.
a61af66fc99e Initial load
duke
parents:
diff changeset
502 //
a61af66fc99e Initial load
duke
parents:
diff changeset
503 // In the future we'll be able to use sysconf(_SC_CPUID_MAX), but that's
a61af66fc99e Initial load
duke
parents:
diff changeset
504 // not available on S8.0.
a61af66fc99e Initial load
duke
parents:
diff changeset
505
a61af66fc99e Initial load
duke
parents:
diff changeset
506 static bool find_processors_online(processorid_t** id_array,
a61af66fc99e Initial load
duke
parents:
diff changeset
507 uint* id_length) {
a61af66fc99e Initial load
duke
parents:
diff changeset
508 const processorid_t MAX_PROCESSOR_ID = 100000 ;
a61af66fc99e Initial load
duke
parents:
diff changeset
509 // Find the number of processors online.
a61af66fc99e Initial load
duke
parents:
diff changeset
510 *id_length = sysconf(_SC_NPROCESSORS_ONLN);
a61af66fc99e Initial load
duke
parents:
diff changeset
511 // Make up an array to hold their ids.
a61af66fc99e Initial load
duke
parents:
diff changeset
512 *id_array = NEW_C_HEAP_ARRAY(processorid_t, *id_length);
a61af66fc99e Initial load
duke
parents:
diff changeset
513 // Processors need not be numbered consecutively.
a61af66fc99e Initial load
duke
parents:
diff changeset
514 long found = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
515 processorid_t next = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
516 while (found < *id_length && next < MAX_PROCESSOR_ID) {
a61af66fc99e Initial load
duke
parents:
diff changeset
517 processor_info_t info;
a61af66fc99e Initial load
duke
parents:
diff changeset
518 if (processor_info(next, &info) == 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
519 // NB, PI_NOINTR processors are effectively online ...
a61af66fc99e Initial load
duke
parents:
diff changeset
520 if (info.pi_state == P_ONLINE || info.pi_state == P_NOINTR) {
a61af66fc99e Initial load
duke
parents:
diff changeset
521 (*id_array)[found] = next;
a61af66fc99e Initial load
duke
parents:
diff changeset
522 found += 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
523 }
a61af66fc99e Initial load
duke
parents:
diff changeset
524 }
a61af66fc99e Initial load
duke
parents:
diff changeset
525 next += 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
526 }
a61af66fc99e Initial load
duke
parents:
diff changeset
527 if (found < *id_length) {
a61af66fc99e Initial load
duke
parents:
diff changeset
528 // The loop above didn't identify the expected number of processors.
a61af66fc99e Initial load
duke
parents:
diff changeset
529 // We could always retry the operation, calling sysconf(_SC_NPROCESSORS_ONLN)
a61af66fc99e Initial load
duke
parents:
diff changeset
530 // and re-running the loop, above, but there's no guarantee of progress
a61af66fc99e Initial load
duke
parents:
diff changeset
531 // if the system configuration is in flux. Instead, we just return what
a61af66fc99e Initial load
duke
parents:
diff changeset
532 // we've got. Note that in the worst case find_processors_online() could
a61af66fc99e Initial load
duke
parents:
diff changeset
533 // return an empty set. (As a fall-back in the case of the empty set we
a61af66fc99e Initial load
duke
parents:
diff changeset
534 // could just return the ID of the current processor).
a61af66fc99e Initial load
duke
parents:
diff changeset
535 *id_length = found ;
a61af66fc99e Initial load
duke
parents:
diff changeset
536 }
a61af66fc99e Initial load
duke
parents:
diff changeset
537
a61af66fc99e Initial load
duke
parents:
diff changeset
538 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
539 }
a61af66fc99e Initial load
duke
parents:
diff changeset
540
a61af66fc99e Initial load
duke
parents:
diff changeset
541 static bool assign_distribution(processorid_t* id_array,
a61af66fc99e Initial load
duke
parents:
diff changeset
542 uint id_length,
a61af66fc99e Initial load
duke
parents:
diff changeset
543 uint* distribution,
a61af66fc99e Initial load
duke
parents:
diff changeset
544 uint distribution_length) {
a61af66fc99e Initial load
duke
parents:
diff changeset
545 // We assume we can assign processorid_t's to uint's.
a61af66fc99e Initial load
duke
parents:
diff changeset
546 assert(sizeof(processorid_t) == sizeof(uint),
a61af66fc99e Initial load
duke
parents:
diff changeset
547 "can't convert processorid_t to uint");
a61af66fc99e Initial load
duke
parents:
diff changeset
548 // Quick check to see if we won't succeed.
a61af66fc99e Initial load
duke
parents:
diff changeset
549 if (id_length < distribution_length) {
a61af66fc99e Initial load
duke
parents:
diff changeset
550 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
551 }
a61af66fc99e Initial load
duke
parents:
diff changeset
552 // Assign processor ids to the distribution.
a61af66fc99e Initial load
duke
parents:
diff changeset
553 // Try to shuffle processors to distribute work across boards,
a61af66fc99e Initial load
duke
parents:
diff changeset
554 // assuming 4 processors per board.
a61af66fc99e Initial load
duke
parents:
diff changeset
555 const uint processors_per_board = ProcessDistributionStride;
a61af66fc99e Initial load
duke
parents:
diff changeset
556 // Find the maximum processor id.
a61af66fc99e Initial load
duke
parents:
diff changeset
557 processorid_t max_id = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
558 for (uint m = 0; m < id_length; m += 1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
559 max_id = MAX2(max_id, id_array[m]);
a61af66fc99e Initial load
duke
parents:
diff changeset
560 }
a61af66fc99e Initial load
duke
parents:
diff changeset
561 // The next id, to limit loops.
a61af66fc99e Initial load
duke
parents:
diff changeset
562 const processorid_t limit_id = max_id + 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
563 // Make up markers for available processors.
a61af66fc99e Initial load
duke
parents:
diff changeset
564 bool* available_id = NEW_C_HEAP_ARRAY(bool, limit_id);
a61af66fc99e Initial load
duke
parents:
diff changeset
565 for (uint c = 0; c < limit_id; c += 1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
566 available_id[c] = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
567 }
a61af66fc99e Initial load
duke
parents:
diff changeset
568 for (uint a = 0; a < id_length; a += 1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
569 available_id[id_array[a]] = true;
a61af66fc99e Initial load
duke
parents:
diff changeset
570 }
a61af66fc99e Initial load
duke
parents:
diff changeset
571 // Step by "boards", then by "slot", copying to "assigned".
a61af66fc99e Initial load
duke
parents:
diff changeset
572 // NEEDS_CLEANUP: The assignment of processors should be stateful,
a61af66fc99e Initial load
duke
parents:
diff changeset
573 // remembering which processors have been assigned by
a61af66fc99e Initial load
duke
parents:
diff changeset
574 // previous calls, etc., so as to distribute several
a61af66fc99e Initial load
duke
parents:
diff changeset
575 // independent calls of this method. What we'd like is
a61af66fc99e Initial load
duke
parents:
diff changeset
576 // It would be nice to have an API that let us ask
a61af66fc99e Initial load
duke
parents:
diff changeset
577 // how many processes are bound to a processor,
a61af66fc99e Initial load
duke
parents:
diff changeset
578 // but we don't have that, either.
a61af66fc99e Initial load
duke
parents:
diff changeset
579 // In the short term, "board" is static so that
a61af66fc99e Initial load
duke
parents:
diff changeset
580 // subsequent distributions don't all start at board 0.
a61af66fc99e Initial load
duke
parents:
diff changeset
581 static uint board = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
582 uint assigned = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
583 // Until we've found enough processors ....
a61af66fc99e Initial load
duke
parents:
diff changeset
584 while (assigned < distribution_length) {
a61af66fc99e Initial load
duke
parents:
diff changeset
585 // ... find the next available processor in the board.
a61af66fc99e Initial load
duke
parents:
diff changeset
586 for (uint slot = 0; slot < processors_per_board; slot += 1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
587 uint try_id = board * processors_per_board + slot;
a61af66fc99e Initial load
duke
parents:
diff changeset
588 if ((try_id < limit_id) && (available_id[try_id] == true)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
589 distribution[assigned] = try_id;
a61af66fc99e Initial load
duke
parents:
diff changeset
590 available_id[try_id] = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
591 assigned += 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
592 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
593 }
a61af66fc99e Initial load
duke
parents:
diff changeset
594 }
a61af66fc99e Initial load
duke
parents:
diff changeset
595 board += 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
596 if (board * processors_per_board + 0 >= limit_id) {
a61af66fc99e Initial load
duke
parents:
diff changeset
597 board = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
598 }
a61af66fc99e Initial load
duke
parents:
diff changeset
599 }
a61af66fc99e Initial load
duke
parents:
diff changeset
600 if (available_id != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
601 FREE_C_HEAP_ARRAY(bool, available_id);
a61af66fc99e Initial load
duke
parents:
diff changeset
602 }
a61af66fc99e Initial load
duke
parents:
diff changeset
603 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
604 }
a61af66fc99e Initial load
duke
parents:
diff changeset
605
a61af66fc99e Initial load
duke
parents:
diff changeset
606 bool os::distribute_processes(uint length, uint* distribution) {
a61af66fc99e Initial load
duke
parents:
diff changeset
607 bool result = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
608 // Find the processor id's of all the available CPUs.
a61af66fc99e Initial load
duke
parents:
diff changeset
609 processorid_t* id_array = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
610 uint id_length = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
611 // There are some races between querying information and using it,
a61af66fc99e Initial load
duke
parents:
diff changeset
612 // since processor sets can change dynamically.
a61af66fc99e Initial load
duke
parents:
diff changeset
613 psetid_t pset = PS_NONE;
a61af66fc99e Initial load
duke
parents:
diff changeset
614 // Are we running in a processor set?
a61af66fc99e Initial load
duke
parents:
diff changeset
615 if ((pset_bind(PS_QUERY, P_PID, P_MYID, &pset) == 0) && pset != PS_NONE) {
a61af66fc99e Initial load
duke
parents:
diff changeset
616 result = find_processors_in_pset(pset, &id_array, &id_length);
a61af66fc99e Initial load
duke
parents:
diff changeset
617 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
618 result = find_processors_online(&id_array, &id_length);
a61af66fc99e Initial load
duke
parents:
diff changeset
619 }
a61af66fc99e Initial load
duke
parents:
diff changeset
620 if (result == true) {
a61af66fc99e Initial load
duke
parents:
diff changeset
621 if (id_length >= length) {
a61af66fc99e Initial load
duke
parents:
diff changeset
622 result = assign_distribution(id_array, id_length, distribution, length);
a61af66fc99e Initial load
duke
parents:
diff changeset
623 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
624 result = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
625 }
a61af66fc99e Initial load
duke
parents:
diff changeset
626 }
a61af66fc99e Initial load
duke
parents:
diff changeset
627 if (id_array != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
628 FREE_C_HEAP_ARRAY(processorid_t, id_array);
a61af66fc99e Initial load
duke
parents:
diff changeset
629 }
a61af66fc99e Initial load
duke
parents:
diff changeset
630 return result;
a61af66fc99e Initial load
duke
parents:
diff changeset
631 }
a61af66fc99e Initial load
duke
parents:
diff changeset
632
a61af66fc99e Initial load
duke
parents:
diff changeset
633 bool os::bind_to_processor(uint processor_id) {
a61af66fc99e Initial load
duke
parents:
diff changeset
634 // We assume that a processorid_t can be stored in a uint.
a61af66fc99e Initial load
duke
parents:
diff changeset
635 assert(sizeof(uint) == sizeof(processorid_t),
a61af66fc99e Initial load
duke
parents:
diff changeset
636 "can't convert uint to processorid_t");
a61af66fc99e Initial load
duke
parents:
diff changeset
637 int bind_result =
a61af66fc99e Initial load
duke
parents:
diff changeset
638 processor_bind(P_LWPID, // bind LWP.
a61af66fc99e Initial load
duke
parents:
diff changeset
639 P_MYID, // bind current LWP.
a61af66fc99e Initial load
duke
parents:
diff changeset
640 (processorid_t) processor_id, // id.
a61af66fc99e Initial load
duke
parents:
diff changeset
641 NULL); // don't return old binding.
a61af66fc99e Initial load
duke
parents:
diff changeset
642 return (bind_result == 0);
a61af66fc99e Initial load
duke
parents:
diff changeset
643 }
a61af66fc99e Initial load
duke
parents:
diff changeset
644
a61af66fc99e Initial load
duke
parents:
diff changeset
645 bool os::getenv(const char* name, char* buffer, int len) {
a61af66fc99e Initial load
duke
parents:
diff changeset
646 char* val = ::getenv( name );
a61af66fc99e Initial load
duke
parents:
diff changeset
647 if ( val == NULL
a61af66fc99e Initial load
duke
parents:
diff changeset
648 || strlen(val) + 1 > len ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
649 if (len > 0) buffer[0] = 0; // return a null string
a61af66fc99e Initial load
duke
parents:
diff changeset
650 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
651 }
a61af66fc99e Initial load
duke
parents:
diff changeset
652 strcpy( buffer, val );
a61af66fc99e Initial load
duke
parents:
diff changeset
653 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
654 }
a61af66fc99e Initial load
duke
parents:
diff changeset
655
a61af66fc99e Initial load
duke
parents:
diff changeset
656
a61af66fc99e Initial load
duke
parents:
diff changeset
657 // Return true if user is running as root.
a61af66fc99e Initial load
duke
parents:
diff changeset
658
a61af66fc99e Initial load
duke
parents:
diff changeset
659 bool os::have_special_privileges() {
a61af66fc99e Initial load
duke
parents:
diff changeset
660 static bool init = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
661 static bool privileges = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
662 if (!init) {
a61af66fc99e Initial load
duke
parents:
diff changeset
663 privileges = (getuid() != geteuid()) || (getgid() != getegid());
a61af66fc99e Initial load
duke
parents:
diff changeset
664 init = true;
a61af66fc99e Initial load
duke
parents:
diff changeset
665 }
a61af66fc99e Initial load
duke
parents:
diff changeset
666 return privileges;
a61af66fc99e Initial load
duke
parents:
diff changeset
667 }
a61af66fc99e Initial load
duke
parents:
diff changeset
668
a61af66fc99e Initial load
duke
parents:
diff changeset
669
a61af66fc99e Initial load
duke
parents:
diff changeset
670 static char* get_property(char* name, char* buffer, int buffer_size) {
a61af66fc99e Initial load
duke
parents:
diff changeset
671 if (os::getenv(name, buffer, buffer_size)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
672 return buffer;
a61af66fc99e Initial load
duke
parents:
diff changeset
673 }
a61af66fc99e Initial load
duke
parents:
diff changeset
674 static char empty[] = "";
a61af66fc99e Initial load
duke
parents:
diff changeset
675 return empty;
a61af66fc99e Initial load
duke
parents:
diff changeset
676 }
a61af66fc99e Initial load
duke
parents:
diff changeset
677
a61af66fc99e Initial load
duke
parents:
diff changeset
678
a61af66fc99e Initial load
duke
parents:
diff changeset
679 void os::init_system_properties_values() {
a61af66fc99e Initial load
duke
parents:
diff changeset
680 char arch[12];
a61af66fc99e Initial load
duke
parents:
diff changeset
681 sysinfo(SI_ARCHITECTURE, arch, sizeof(arch));
a61af66fc99e Initial load
duke
parents:
diff changeset
682
a61af66fc99e Initial load
duke
parents:
diff changeset
683 // The next steps are taken in the product version:
a61af66fc99e Initial load
duke
parents:
diff changeset
684 //
a61af66fc99e Initial load
duke
parents:
diff changeset
685 // Obtain the JAVA_HOME value from the location of libjvm[_g].so.
a61af66fc99e Initial load
duke
parents:
diff changeset
686 // This library should be located at:
a61af66fc99e Initial load
duke
parents:
diff changeset
687 // <JAVA_HOME>/jre/lib/<arch>/{client|server}/libjvm[_g].so.
a61af66fc99e Initial load
duke
parents:
diff changeset
688 //
a61af66fc99e Initial load
duke
parents:
diff changeset
689 // If "/jre/lib/" appears at the right place in the path, then we
a61af66fc99e Initial load
duke
parents:
diff changeset
690 // assume libjvm[_g].so is installed in a JDK and we use this path.
a61af66fc99e Initial load
duke
parents:
diff changeset
691 //
a61af66fc99e Initial load
duke
parents:
diff changeset
692 // Otherwise exit with message: "Could not create the Java virtual machine."
a61af66fc99e Initial load
duke
parents:
diff changeset
693 //
a61af66fc99e Initial load
duke
parents:
diff changeset
694 // The following extra steps are taken in the debugging version:
a61af66fc99e Initial load
duke
parents:
diff changeset
695 //
a61af66fc99e Initial load
duke
parents:
diff changeset
696 // If "/jre/lib/" does NOT appear at the right place in the path
a61af66fc99e Initial load
duke
parents:
diff changeset
697 // instead of exit check for $JAVA_HOME environment variable.
a61af66fc99e Initial load
duke
parents:
diff changeset
698 //
a61af66fc99e Initial load
duke
parents:
diff changeset
699 // If it is defined and we are able to locate $JAVA_HOME/jre/lib/<arch>,
a61af66fc99e Initial load
duke
parents:
diff changeset
700 // then we append a fake suffix "hotspot/libjvm[_g].so" to this path so
a61af66fc99e Initial load
duke
parents:
diff changeset
701 // it looks like libjvm[_g].so is installed there
a61af66fc99e Initial load
duke
parents:
diff changeset
702 // <JAVA_HOME>/jre/lib/<arch>/hotspot/libjvm[_g].so.
a61af66fc99e Initial load
duke
parents:
diff changeset
703 //
a61af66fc99e Initial load
duke
parents:
diff changeset
704 // Otherwise exit.
a61af66fc99e Initial load
duke
parents:
diff changeset
705 //
a61af66fc99e Initial load
duke
parents:
diff changeset
706 // Important note: if the location of libjvm.so changes this
a61af66fc99e Initial load
duke
parents:
diff changeset
707 // code needs to be changed accordingly.
a61af66fc99e Initial load
duke
parents:
diff changeset
708
a61af66fc99e Initial load
duke
parents:
diff changeset
709 // The next few definitions allow the code to be verbatim:
a61af66fc99e Initial load
duke
parents:
diff changeset
710 #define malloc(n) (char*)NEW_C_HEAP_ARRAY(char, (n))
a61af66fc99e Initial load
duke
parents:
diff changeset
711 #define free(p) FREE_C_HEAP_ARRAY(char, p)
a61af66fc99e Initial load
duke
parents:
diff changeset
712 #define getenv(n) ::getenv(n)
a61af66fc99e Initial load
duke
parents:
diff changeset
713
a61af66fc99e Initial load
duke
parents:
diff changeset
714 #define EXTENSIONS_DIR "/lib/ext"
a61af66fc99e Initial load
duke
parents:
diff changeset
715 #define ENDORSED_DIR "/lib/endorsed"
a61af66fc99e Initial load
duke
parents:
diff changeset
716 #define COMMON_DIR "/usr/jdk/packages"
a61af66fc99e Initial load
duke
parents:
diff changeset
717
a61af66fc99e Initial load
duke
parents:
diff changeset
718 {
a61af66fc99e Initial load
duke
parents:
diff changeset
719 /* sysclasspath, java_home, dll_dir */
a61af66fc99e Initial load
duke
parents:
diff changeset
720 {
a61af66fc99e Initial load
duke
parents:
diff changeset
721 char *home_path;
a61af66fc99e Initial load
duke
parents:
diff changeset
722 char *dll_path;
a61af66fc99e Initial load
duke
parents:
diff changeset
723 char *pslash;
a61af66fc99e Initial load
duke
parents:
diff changeset
724 char buf[MAXPATHLEN];
a61af66fc99e Initial load
duke
parents:
diff changeset
725 os::jvm_path(buf, sizeof(buf));
a61af66fc99e Initial load
duke
parents:
diff changeset
726
a61af66fc99e Initial load
duke
parents:
diff changeset
727 // Found the full path to libjvm.so.
a61af66fc99e Initial load
duke
parents:
diff changeset
728 // Now cut the path to <java_home>/jre if we can.
a61af66fc99e Initial load
duke
parents:
diff changeset
729 *(strrchr(buf, '/')) = '\0'; /* get rid of /libjvm.so */
a61af66fc99e Initial load
duke
parents:
diff changeset
730 pslash = strrchr(buf, '/');
a61af66fc99e Initial load
duke
parents:
diff changeset
731 if (pslash != NULL)
a61af66fc99e Initial load
duke
parents:
diff changeset
732 *pslash = '\0'; /* get rid of /{client|server|hotspot} */
a61af66fc99e Initial load
duke
parents:
diff changeset
733 dll_path = malloc(strlen(buf) + 1);
a61af66fc99e Initial load
duke
parents:
diff changeset
734 if (dll_path == NULL)
a61af66fc99e Initial load
duke
parents:
diff changeset
735 return;
a61af66fc99e Initial load
duke
parents:
diff changeset
736 strcpy(dll_path, buf);
a61af66fc99e Initial load
duke
parents:
diff changeset
737 Arguments::set_dll_dir(dll_path);
a61af66fc99e Initial load
duke
parents:
diff changeset
738
a61af66fc99e Initial load
duke
parents:
diff changeset
739 if (pslash != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
740 pslash = strrchr(buf, '/');
a61af66fc99e Initial load
duke
parents:
diff changeset
741 if (pslash != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
742 *pslash = '\0'; /* get rid of /<arch> */
a61af66fc99e Initial load
duke
parents:
diff changeset
743 pslash = strrchr(buf, '/');
a61af66fc99e Initial load
duke
parents:
diff changeset
744 if (pslash != NULL)
a61af66fc99e Initial load
duke
parents:
diff changeset
745 *pslash = '\0'; /* get rid of /lib */
a61af66fc99e Initial load
duke
parents:
diff changeset
746 }
a61af66fc99e Initial load
duke
parents:
diff changeset
747 }
a61af66fc99e Initial load
duke
parents:
diff changeset
748
a61af66fc99e Initial load
duke
parents:
diff changeset
749 home_path = malloc(strlen(buf) + 1);
a61af66fc99e Initial load
duke
parents:
diff changeset
750 if (home_path == NULL)
a61af66fc99e Initial load
duke
parents:
diff changeset
751 return;
a61af66fc99e Initial load
duke
parents:
diff changeset
752 strcpy(home_path, buf);
a61af66fc99e Initial load
duke
parents:
diff changeset
753 Arguments::set_java_home(home_path);
a61af66fc99e Initial load
duke
parents:
diff changeset
754
a61af66fc99e Initial load
duke
parents:
diff changeset
755 if (!set_boot_path('/', ':'))
a61af66fc99e Initial load
duke
parents:
diff changeset
756 return;
a61af66fc99e Initial load
duke
parents:
diff changeset
757 }
a61af66fc99e Initial load
duke
parents:
diff changeset
758
a61af66fc99e Initial load
duke
parents:
diff changeset
759 /*
a61af66fc99e Initial load
duke
parents:
diff changeset
760 * Where to look for native libraries
a61af66fc99e Initial load
duke
parents:
diff changeset
761 */
a61af66fc99e Initial load
duke
parents:
diff changeset
762 {
a61af66fc99e Initial load
duke
parents:
diff changeset
763 // Use dlinfo() to determine the correct java.library.path.
a61af66fc99e Initial load
duke
parents:
diff changeset
764 //
a61af66fc99e Initial load
duke
parents:
diff changeset
765 // If we're launched by the Java launcher, and the user
a61af66fc99e Initial load
duke
parents:
diff changeset
766 // does not set java.library.path explicitly on the commandline,
a61af66fc99e Initial load
duke
parents:
diff changeset
767 // the Java launcher sets LD_LIBRARY_PATH for us and unsets
a61af66fc99e Initial load
duke
parents:
diff changeset
768 // LD_LIBRARY_PATH_32 and LD_LIBRARY_PATH_64. In this case
a61af66fc99e Initial load
duke
parents:
diff changeset
769 // dlinfo returns LD_LIBRARY_PATH + crle settings (including
a61af66fc99e Initial load
duke
parents:
diff changeset
770 // /usr/lib), which is exactly what we want.
a61af66fc99e Initial load
duke
parents:
diff changeset
771 //
a61af66fc99e Initial load
duke
parents:
diff changeset
772 // If the user does set java.library.path, it completely
a61af66fc99e Initial load
duke
parents:
diff changeset
773 // overwrites this setting, and always has.
a61af66fc99e Initial load
duke
parents:
diff changeset
774 //
a61af66fc99e Initial load
duke
parents:
diff changeset
775 // If we're not launched by the Java launcher, we may
a61af66fc99e Initial load
duke
parents:
diff changeset
776 // get here with any/all of the LD_LIBRARY_PATH[_32|64]
a61af66fc99e Initial load
duke
parents:
diff changeset
777 // settings. Again, dlinfo does exactly what we want.
a61af66fc99e Initial load
duke
parents:
diff changeset
778
a61af66fc99e Initial load
duke
parents:
diff changeset
779 Dl_serinfo _info, *info = &_info;
a61af66fc99e Initial load
duke
parents:
diff changeset
780 Dl_serpath *path;
a61af66fc99e Initial load
duke
parents:
diff changeset
781 char* library_path;
a61af66fc99e Initial load
duke
parents:
diff changeset
782 char *common_path;
a61af66fc99e Initial load
duke
parents:
diff changeset
783 int i;
a61af66fc99e Initial load
duke
parents:
diff changeset
784
a61af66fc99e Initial load
duke
parents:
diff changeset
785 // determine search path count and required buffer size
a61af66fc99e Initial load
duke
parents:
diff changeset
786 if (dlinfo(RTLD_SELF, RTLD_DI_SERINFOSIZE, (void *)info) == -1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
787 vm_exit_during_initialization("dlinfo SERINFOSIZE request", dlerror());
a61af66fc99e Initial load
duke
parents:
diff changeset
788 }
a61af66fc99e Initial load
duke
parents:
diff changeset
789
a61af66fc99e Initial load
duke
parents:
diff changeset
790 // allocate new buffer and initialize
a61af66fc99e Initial load
duke
parents:
diff changeset
791 info = (Dl_serinfo*)malloc(_info.dls_size);
a61af66fc99e Initial load
duke
parents:
diff changeset
792 if (info == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
793 vm_exit_out_of_memory(_info.dls_size,
a61af66fc99e Initial load
duke
parents:
diff changeset
794 "init_system_properties_values info");
a61af66fc99e Initial load
duke
parents:
diff changeset
795 }
a61af66fc99e Initial load
duke
parents:
diff changeset
796 info->dls_size = _info.dls_size;
a61af66fc99e Initial load
duke
parents:
diff changeset
797 info->dls_cnt = _info.dls_cnt;
a61af66fc99e Initial load
duke
parents:
diff changeset
798
a61af66fc99e Initial load
duke
parents:
diff changeset
799 // obtain search path information
a61af66fc99e Initial load
duke
parents:
diff changeset
800 if (dlinfo(RTLD_SELF, RTLD_DI_SERINFO, (void *)info) == -1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
801 free(info);
a61af66fc99e Initial load
duke
parents:
diff changeset
802 vm_exit_during_initialization("dlinfo SERINFO request", dlerror());
a61af66fc99e Initial load
duke
parents:
diff changeset
803 }
a61af66fc99e Initial load
duke
parents:
diff changeset
804
a61af66fc99e Initial load
duke
parents:
diff changeset
805 path = &info->dls_serpath[0];
a61af66fc99e Initial load
duke
parents:
diff changeset
806
a61af66fc99e Initial load
duke
parents:
diff changeset
807 // Note: Due to a legacy implementation, most of the library path
a61af66fc99e Initial load
duke
parents:
diff changeset
808 // is set in the launcher. This was to accomodate linking restrictions
a61af66fc99e Initial load
duke
parents:
diff changeset
809 // on legacy Solaris implementations (which are no longer supported).
a61af66fc99e Initial load
duke
parents:
diff changeset
810 // Eventually, all the library path setting will be done here.
a61af66fc99e Initial load
duke
parents:
diff changeset
811 //
a61af66fc99e Initial load
duke
parents:
diff changeset
812 // However, to prevent the proliferation of improperly built native
a61af66fc99e Initial load
duke
parents:
diff changeset
813 // libraries, the new path component /usr/jdk/packages is added here.
a61af66fc99e Initial load
duke
parents:
diff changeset
814
a61af66fc99e Initial load
duke
parents:
diff changeset
815 // Determine the actual CPU architecture.
a61af66fc99e Initial load
duke
parents:
diff changeset
816 char cpu_arch[12];
a61af66fc99e Initial load
duke
parents:
diff changeset
817 sysinfo(SI_ARCHITECTURE, cpu_arch, sizeof(cpu_arch));
a61af66fc99e Initial load
duke
parents:
diff changeset
818 #ifdef _LP64
a61af66fc99e Initial load
duke
parents:
diff changeset
819 // If we are a 64-bit vm, perform the following translations:
a61af66fc99e Initial load
duke
parents:
diff changeset
820 // sparc -> sparcv9
a61af66fc99e Initial load
duke
parents:
diff changeset
821 // i386 -> amd64
a61af66fc99e Initial load
duke
parents:
diff changeset
822 if (strcmp(cpu_arch, "sparc") == 0)
a61af66fc99e Initial load
duke
parents:
diff changeset
823 strcat(cpu_arch, "v9");
a61af66fc99e Initial load
duke
parents:
diff changeset
824 else if (strcmp(cpu_arch, "i386") == 0)
a61af66fc99e Initial load
duke
parents:
diff changeset
825 strcpy(cpu_arch, "amd64");
a61af66fc99e Initial load
duke
parents:
diff changeset
826 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
827
a61af66fc99e Initial load
duke
parents:
diff changeset
828 // Construct the invariant part of ld_library_path. Note that the
a61af66fc99e Initial load
duke
parents:
diff changeset
829 // space for the colon and the trailing null are provided by the
a61af66fc99e Initial load
duke
parents:
diff changeset
830 // nulls included by the sizeof operator.
a61af66fc99e Initial load
duke
parents:
diff changeset
831 size_t bufsize = sizeof(COMMON_DIR) + sizeof("/lib/") + strlen(cpu_arch);
a61af66fc99e Initial load
duke
parents:
diff changeset
832 common_path = malloc(bufsize);
a61af66fc99e Initial load
duke
parents:
diff changeset
833 if (common_path == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
834 free(info);
a61af66fc99e Initial load
duke
parents:
diff changeset
835 vm_exit_out_of_memory(bufsize,
a61af66fc99e Initial load
duke
parents:
diff changeset
836 "init_system_properties_values common_path");
a61af66fc99e Initial load
duke
parents:
diff changeset
837 }
a61af66fc99e Initial load
duke
parents:
diff changeset
838 sprintf(common_path, COMMON_DIR "/lib/%s", cpu_arch);
a61af66fc99e Initial load
duke
parents:
diff changeset
839
a61af66fc99e Initial load
duke
parents:
diff changeset
840 // struct size is more than sufficient for the path components obtained
a61af66fc99e Initial load
duke
parents:
diff changeset
841 // through the dlinfo() call, so only add additional space for the path
a61af66fc99e Initial load
duke
parents:
diff changeset
842 // components explicitly added here.
a61af66fc99e Initial load
duke
parents:
diff changeset
843 bufsize = info->dls_size + strlen(common_path);
a61af66fc99e Initial load
duke
parents:
diff changeset
844 library_path = malloc(bufsize);
a61af66fc99e Initial load
duke
parents:
diff changeset
845 if (library_path == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
846 free(info);
a61af66fc99e Initial load
duke
parents:
diff changeset
847 free(common_path);
a61af66fc99e Initial load
duke
parents:
diff changeset
848 vm_exit_out_of_memory(bufsize,
a61af66fc99e Initial load
duke
parents:
diff changeset
849 "init_system_properties_values library_path");
a61af66fc99e Initial load
duke
parents:
diff changeset
850 }
a61af66fc99e Initial load
duke
parents:
diff changeset
851 library_path[0] = '\0';
a61af66fc99e Initial load
duke
parents:
diff changeset
852
a61af66fc99e Initial load
duke
parents:
diff changeset
853 // Construct the desired Java library path from the linker's library
a61af66fc99e Initial load
duke
parents:
diff changeset
854 // search path.
a61af66fc99e Initial load
duke
parents:
diff changeset
855 //
a61af66fc99e Initial load
duke
parents:
diff changeset
856 // For compatibility, it is optimal that we insert the additional path
a61af66fc99e Initial load
duke
parents:
diff changeset
857 // components specific to the Java VM after those components specified
a61af66fc99e Initial load
duke
parents:
diff changeset
858 // in LD_LIBRARY_PATH (if any) but before those added by the ld.so
a61af66fc99e Initial load
duke
parents:
diff changeset
859 // infrastructure.
a61af66fc99e Initial load
duke
parents:
diff changeset
860 if (info->dls_cnt == 0) { // Not sure this can happen, but allow for it
a61af66fc99e Initial load
duke
parents:
diff changeset
861 strcpy(library_path, common_path);
a61af66fc99e Initial load
duke
parents:
diff changeset
862 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
863 int inserted = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
864 for (i = 0; i < info->dls_cnt; i++, path++) {
a61af66fc99e Initial load
duke
parents:
diff changeset
865 uint_t flags = path->dls_flags & LA_SER_MASK;
a61af66fc99e Initial load
duke
parents:
diff changeset
866 if (((flags & LA_SER_LIBPATH) == 0) && !inserted) {
a61af66fc99e Initial load
duke
parents:
diff changeset
867 strcat(library_path, common_path);
a61af66fc99e Initial load
duke
parents:
diff changeset
868 strcat(library_path, os::path_separator());
a61af66fc99e Initial load
duke
parents:
diff changeset
869 inserted = 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
870 }
a61af66fc99e Initial load
duke
parents:
diff changeset
871 strcat(library_path, path->dls_name);
a61af66fc99e Initial load
duke
parents:
diff changeset
872 strcat(library_path, os::path_separator());
a61af66fc99e Initial load
duke
parents:
diff changeset
873 }
a61af66fc99e Initial load
duke
parents:
diff changeset
874 // eliminate trailing path separator
a61af66fc99e Initial load
duke
parents:
diff changeset
875 library_path[strlen(library_path)-1] = '\0';
a61af66fc99e Initial load
duke
parents:
diff changeset
876 }
a61af66fc99e Initial load
duke
parents:
diff changeset
877
a61af66fc99e Initial load
duke
parents:
diff changeset
878 // happens before argument parsing - can't use a trace flag
a61af66fc99e Initial load
duke
parents:
diff changeset
879 // tty->print_raw("init_system_properties_values: native lib path: ");
a61af66fc99e Initial load
duke
parents:
diff changeset
880 // tty->print_raw_cr(library_path);
a61af66fc99e Initial load
duke
parents:
diff changeset
881
a61af66fc99e Initial load
duke
parents:
diff changeset
882 // callee copies into its own buffer
a61af66fc99e Initial load
duke
parents:
diff changeset
883 Arguments::set_library_path(library_path);
a61af66fc99e Initial load
duke
parents:
diff changeset
884
a61af66fc99e Initial load
duke
parents:
diff changeset
885 free(common_path);
a61af66fc99e Initial load
duke
parents:
diff changeset
886 free(library_path);
a61af66fc99e Initial load
duke
parents:
diff changeset
887 free(info);
a61af66fc99e Initial load
duke
parents:
diff changeset
888 }
a61af66fc99e Initial load
duke
parents:
diff changeset
889
a61af66fc99e Initial load
duke
parents:
diff changeset
890 /*
a61af66fc99e Initial load
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parents:
diff changeset
891 * Extensions directories.
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parents:
diff changeset
892 *
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parents:
diff changeset
893 * Note that the space for the colon and the trailing null are provided
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parents:
diff changeset
894 * by the nulls included by the sizeof operator (so actually one byte more
a61af66fc99e Initial load
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parents:
diff changeset
895 * than necessary is allocated).
a61af66fc99e Initial load
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parents:
diff changeset
896 */
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parents:
diff changeset
897 {
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parents:
diff changeset
898 char *buf = (char *) malloc(strlen(Arguments::get_java_home()) +
a61af66fc99e Initial load
duke
parents:
diff changeset
899 sizeof(EXTENSIONS_DIR) + sizeof(COMMON_DIR) +
a61af66fc99e Initial load
duke
parents:
diff changeset
900 sizeof(EXTENSIONS_DIR));
a61af66fc99e Initial load
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parents:
diff changeset
901 sprintf(buf, "%s" EXTENSIONS_DIR ":" COMMON_DIR EXTENSIONS_DIR,
a61af66fc99e Initial load
duke
parents:
diff changeset
902 Arguments::get_java_home());
a61af66fc99e Initial load
duke
parents:
diff changeset
903 Arguments::set_ext_dirs(buf);
a61af66fc99e Initial load
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parents:
diff changeset
904 }
a61af66fc99e Initial load
duke
parents:
diff changeset
905
a61af66fc99e Initial load
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parents:
diff changeset
906 /* Endorsed standards default directory. */
a61af66fc99e Initial load
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parents:
diff changeset
907 {
a61af66fc99e Initial load
duke
parents:
diff changeset
908 char * buf = malloc(strlen(Arguments::get_java_home()) + sizeof(ENDORSED_DIR));
a61af66fc99e Initial load
duke
parents:
diff changeset
909 sprintf(buf, "%s" ENDORSED_DIR, Arguments::get_java_home());
a61af66fc99e Initial load
duke
parents:
diff changeset
910 Arguments::set_endorsed_dirs(buf);
a61af66fc99e Initial load
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parents:
diff changeset
911 }
a61af66fc99e Initial load
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parents:
diff changeset
912 }
a61af66fc99e Initial load
duke
parents:
diff changeset
913
a61af66fc99e Initial load
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parents:
diff changeset
914 #undef malloc
a61af66fc99e Initial load
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parents:
diff changeset
915 #undef free
a61af66fc99e Initial load
duke
parents:
diff changeset
916 #undef getenv
a61af66fc99e Initial load
duke
parents:
diff changeset
917 #undef EXTENSIONS_DIR
a61af66fc99e Initial load
duke
parents:
diff changeset
918 #undef ENDORSED_DIR
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duke
parents:
diff changeset
919 #undef COMMON_DIR
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parents:
diff changeset
920
a61af66fc99e Initial load
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parents:
diff changeset
921 }
a61af66fc99e Initial load
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parents:
diff changeset
922
a61af66fc99e Initial load
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parents:
diff changeset
923 void os::breakpoint() {
a61af66fc99e Initial load
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parents:
diff changeset
924 BREAKPOINT;
a61af66fc99e Initial load
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parents:
diff changeset
925 }
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parents:
diff changeset
926
a61af66fc99e Initial load
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parents:
diff changeset
927 bool os::obsolete_option(const JavaVMOption *option)
a61af66fc99e Initial load
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parents:
diff changeset
928 {
a61af66fc99e Initial load
duke
parents:
diff changeset
929 if (!strncmp(option->optionString, "-Xt", 3)) {
a61af66fc99e Initial load
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parents:
diff changeset
930 return true;
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parents:
diff changeset
931 } else if (!strncmp(option->optionString, "-Xtm", 4)) {
a61af66fc99e Initial load
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parents:
diff changeset
932 return true;
a61af66fc99e Initial load
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parents:
diff changeset
933 } else if (!strncmp(option->optionString, "-Xverifyheap", 12)) {
a61af66fc99e Initial load
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parents:
diff changeset
934 return true;
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parents:
diff changeset
935 } else if (!strncmp(option->optionString, "-Xmaxjitcodesize", 16)) {
a61af66fc99e Initial load
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parents:
diff changeset
936 return true;
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parents:
diff changeset
937 }
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parents:
diff changeset
938 return false;
a61af66fc99e Initial load
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parents:
diff changeset
939 }
a61af66fc99e Initial load
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parents:
diff changeset
940
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parents:
diff changeset
941 bool os::Solaris::valid_stack_address(Thread* thread, address sp) {
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parents:
diff changeset
942 address stackStart = (address)thread->stack_base();
a61af66fc99e Initial load
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parents:
diff changeset
943 address stackEnd = (address)(stackStart - (address)thread->stack_size());
a61af66fc99e Initial load
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parents:
diff changeset
944 if (sp < stackStart && sp >= stackEnd ) return true;
a61af66fc99e Initial load
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parents:
diff changeset
945 return false;
a61af66fc99e Initial load
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parents:
diff changeset
946 }
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duke
parents:
diff changeset
947
a61af66fc99e Initial load
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parents:
diff changeset
948 extern "C" void breakpoint() {
a61af66fc99e Initial load
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parents:
diff changeset
949 // use debugger to set breakpoint here
a61af66fc99e Initial load
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parents:
diff changeset
950 }
a61af66fc99e Initial load
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parents:
diff changeset
951
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parents:
diff changeset
952 // Returns an estimate of the current stack pointer. Result must be guaranteed to
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parents:
diff changeset
953 // point into the calling threads stack, and be no lower than the current stack
a61af66fc99e Initial load
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parents:
diff changeset
954 // pointer.
a61af66fc99e Initial load
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parents:
diff changeset
955 address os::current_stack_pointer() {
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parents:
diff changeset
956 volatile int dummy;
a61af66fc99e Initial load
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parents:
diff changeset
957 address sp = (address)&dummy + 8; // %%%% need to confirm if this is right
a61af66fc99e Initial load
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parents:
diff changeset
958 return sp;
a61af66fc99e Initial load
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parents:
diff changeset
959 }
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parents:
diff changeset
960
a61af66fc99e Initial load
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parents:
diff changeset
961 static thread_t main_thread;
a61af66fc99e Initial load
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parents:
diff changeset
962
a61af66fc99e Initial load
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parents:
diff changeset
963 // Thread start routine for all new Java threads
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parents:
diff changeset
964 extern "C" void* java_start(void* thread_addr) {
a61af66fc99e Initial load
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parents:
diff changeset
965 // Try to randomize the cache line index of hot stack frames.
a61af66fc99e Initial load
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parents:
diff changeset
966 // This helps when threads of the same stack traces evict each other's
a61af66fc99e Initial load
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parents:
diff changeset
967 // cache lines. The threads can be either from the same JVM instance, or
a61af66fc99e Initial load
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parents:
diff changeset
968 // from different JVM instances. The benefit is especially true for
a61af66fc99e Initial load
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parents:
diff changeset
969 // processors with hyperthreading technology.
a61af66fc99e Initial load
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parents:
diff changeset
970 static int counter = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
971 int pid = os::current_process_id();
a61af66fc99e Initial load
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parents:
diff changeset
972 alloca(((pid ^ counter++) & 7) * 128);
a61af66fc99e Initial load
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parents:
diff changeset
973
a61af66fc99e Initial load
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parents:
diff changeset
974 int prio;
a61af66fc99e Initial load
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parents:
diff changeset
975 Thread* thread = (Thread*)thread_addr;
a61af66fc99e Initial load
duke
parents:
diff changeset
976 OSThread* osthr = thread->osthread();
a61af66fc99e Initial load
duke
parents:
diff changeset
977
a61af66fc99e Initial load
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parents:
diff changeset
978 osthr->set_lwp_id( _lwp_self() ); // Store lwp in case we are bound
a61af66fc99e Initial load
duke
parents:
diff changeset
979 thread->_schedctl = (void *) schedctl_init () ;
a61af66fc99e Initial load
duke
parents:
diff changeset
980
a61af66fc99e Initial load
duke
parents:
diff changeset
981 if (UseNUMA) {
a61af66fc99e Initial load
duke
parents:
diff changeset
982 int lgrp_id = os::numa_get_group_id();
a61af66fc99e Initial load
duke
parents:
diff changeset
983 if (lgrp_id != -1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
984 thread->set_lgrp_id(lgrp_id);
a61af66fc99e Initial load
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parents:
diff changeset
985 }
a61af66fc99e Initial load
duke
parents:
diff changeset
986 }
a61af66fc99e Initial load
duke
parents:
diff changeset
987
a61af66fc99e Initial load
duke
parents:
diff changeset
988 // If the creator called set priority before we started,
a61af66fc99e Initial load
duke
parents:
diff changeset
989 // we need to call set priority now that we have an lwp.
a61af66fc99e Initial load
duke
parents:
diff changeset
990 // Get the priority from libthread and set the priority
a61af66fc99e Initial load
duke
parents:
diff changeset
991 // for the new Solaris lwp.
a61af66fc99e Initial load
duke
parents:
diff changeset
992 if ( osthr->thread_id() != -1 ) {
a61af66fc99e Initial load
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parents:
diff changeset
993 if ( UseThreadPriorities ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
994 thr_getprio(osthr->thread_id(), &prio);
a61af66fc99e Initial load
duke
parents:
diff changeset
995 if (ThreadPriorityVerbose) {
a61af66fc99e Initial load
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parents:
diff changeset
996 tty->print_cr("Starting Thread " INTPTR_FORMAT ", LWP is " INTPTR_FORMAT ", setting priority: %d\n",
a61af66fc99e Initial load
duke
parents:
diff changeset
997 osthr->thread_id(), osthr->lwp_id(), prio );
a61af66fc99e Initial load
duke
parents:
diff changeset
998 }
a61af66fc99e Initial load
duke
parents:
diff changeset
999 os::set_native_priority(thread, prio);
a61af66fc99e Initial load
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parents:
diff changeset
1000 }
a61af66fc99e Initial load
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parents:
diff changeset
1001 } else if (ThreadPriorityVerbose) {
a61af66fc99e Initial load
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parents:
diff changeset
1002 warning("Can't set priority in _start routine, thread id hasn't been set\n");
a61af66fc99e Initial load
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parents:
diff changeset
1003 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1004
a61af66fc99e Initial load
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parents:
diff changeset
1005 assert(osthr->get_state() == RUNNABLE, "invalid os thread state");
a61af66fc99e Initial load
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parents:
diff changeset
1006
a61af66fc99e Initial load
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parents:
diff changeset
1007 // initialize signal mask for this thread
a61af66fc99e Initial load
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parents:
diff changeset
1008 os::Solaris::hotspot_sigmask(thread);
a61af66fc99e Initial load
duke
parents:
diff changeset
1009
a61af66fc99e Initial load
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parents:
diff changeset
1010 thread->run();
a61af66fc99e Initial load
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parents:
diff changeset
1011
a61af66fc99e Initial load
duke
parents:
diff changeset
1012 // One less thread is executing
a61af66fc99e Initial load
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parents:
diff changeset
1013 // When the VMThread gets here, the main thread may have already exited
a61af66fc99e Initial load
duke
parents:
diff changeset
1014 // which frees the CodeHeap containing the Atomic::dec code
a61af66fc99e Initial load
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parents:
diff changeset
1015 if (thread != VMThread::vm_thread() && VMThread::vm_thread() != NULL) {
a61af66fc99e Initial load
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parents:
diff changeset
1016 Atomic::dec(&os::Solaris::_os_thread_count);
a61af66fc99e Initial load
duke
parents:
diff changeset
1017 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1018
a61af66fc99e Initial load
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parents:
diff changeset
1019 if (UseDetachedThreads) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1020 thr_exit(NULL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1021 ShouldNotReachHere();
a61af66fc99e Initial load
duke
parents:
diff changeset
1022 }
a61af66fc99e Initial load
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parents:
diff changeset
1023 return NULL;
a61af66fc99e Initial load
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parents:
diff changeset
1024 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1025
a61af66fc99e Initial load
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parents:
diff changeset
1026 static OSThread* create_os_thread(Thread* thread, thread_t thread_id) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1027 // Allocate the OSThread object
a61af66fc99e Initial load
duke
parents:
diff changeset
1028 OSThread* osthread = new OSThread(NULL, NULL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1029 if (osthread == NULL) return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
1030
a61af66fc99e Initial load
duke
parents:
diff changeset
1031 // Store info on the Solaris thread into the OSThread
a61af66fc99e Initial load
duke
parents:
diff changeset
1032 osthread->set_thread_id(thread_id);
a61af66fc99e Initial load
duke
parents:
diff changeset
1033 osthread->set_lwp_id(_lwp_self());
a61af66fc99e Initial load
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parents:
diff changeset
1034 thread->_schedctl = (void *) schedctl_init () ;
a61af66fc99e Initial load
duke
parents:
diff changeset
1035
a61af66fc99e Initial load
duke
parents:
diff changeset
1036 if (UseNUMA) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1037 int lgrp_id = os::numa_get_group_id();
a61af66fc99e Initial load
duke
parents:
diff changeset
1038 if (lgrp_id != -1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1039 thread->set_lgrp_id(lgrp_id);
a61af66fc99e Initial load
duke
parents:
diff changeset
1040 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1041 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1042
a61af66fc99e Initial load
duke
parents:
diff changeset
1043 if ( ThreadPriorityVerbose ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1044 tty->print_cr("In create_os_thread, Thread " INTPTR_FORMAT ", LWP is " INTPTR_FORMAT "\n",
a61af66fc99e Initial load
duke
parents:
diff changeset
1045 osthread->thread_id(), osthread->lwp_id() );
a61af66fc99e Initial load
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parents:
diff changeset
1046 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1047
a61af66fc99e Initial load
duke
parents:
diff changeset
1048 // Initial thread state is INITIALIZED, not SUSPENDED
a61af66fc99e Initial load
duke
parents:
diff changeset
1049 osthread->set_state(INITIALIZED);
a61af66fc99e Initial load
duke
parents:
diff changeset
1050
a61af66fc99e Initial load
duke
parents:
diff changeset
1051 return osthread;
a61af66fc99e Initial load
duke
parents:
diff changeset
1052 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1053
a61af66fc99e Initial load
duke
parents:
diff changeset
1054 void os::Solaris::hotspot_sigmask(Thread* thread) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1055
a61af66fc99e Initial load
duke
parents:
diff changeset
1056 //Save caller's signal mask
a61af66fc99e Initial load
duke
parents:
diff changeset
1057 sigset_t sigmask;
a61af66fc99e Initial load
duke
parents:
diff changeset
1058 thr_sigsetmask(SIG_SETMASK, NULL, &sigmask);
a61af66fc99e Initial load
duke
parents:
diff changeset
1059 OSThread *osthread = thread->osthread();
a61af66fc99e Initial load
duke
parents:
diff changeset
1060 osthread->set_caller_sigmask(sigmask);
a61af66fc99e Initial load
duke
parents:
diff changeset
1061
a61af66fc99e Initial load
duke
parents:
diff changeset
1062 thr_sigsetmask(SIG_UNBLOCK, os::Solaris::unblocked_signals(), NULL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1063 if (!ReduceSignalUsage) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1064 if (thread->is_VM_thread()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1065 // Only the VM thread handles BREAK_SIGNAL ...
a61af66fc99e Initial load
duke
parents:
diff changeset
1066 thr_sigsetmask(SIG_UNBLOCK, vm_signals(), NULL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1067 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1068 // ... all other threads block BREAK_SIGNAL
a61af66fc99e Initial load
duke
parents:
diff changeset
1069 assert(!sigismember(vm_signals(), SIGINT), "SIGINT should not be blocked");
a61af66fc99e Initial load
duke
parents:
diff changeset
1070 thr_sigsetmask(SIG_BLOCK, vm_signals(), NULL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1071 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1072 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1073 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1074
a61af66fc99e Initial load
duke
parents:
diff changeset
1075 bool os::create_attached_thread(JavaThread* thread) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1076 #ifdef ASSERT
a61af66fc99e Initial load
duke
parents:
diff changeset
1077 thread->verify_not_published();
a61af66fc99e Initial load
duke
parents:
diff changeset
1078 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
1079 OSThread* osthread = create_os_thread(thread, thr_self());
a61af66fc99e Initial load
duke
parents:
diff changeset
1080 if (osthread == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1081 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
1082 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1083
a61af66fc99e Initial load
duke
parents:
diff changeset
1084 // Initial thread state is RUNNABLE
a61af66fc99e Initial load
duke
parents:
diff changeset
1085 osthread->set_state(RUNNABLE);
a61af66fc99e Initial load
duke
parents:
diff changeset
1086 thread->set_osthread(osthread);
a61af66fc99e Initial load
duke
parents:
diff changeset
1087
a61af66fc99e Initial load
duke
parents:
diff changeset
1088 // initialize signal mask for this thread
a61af66fc99e Initial load
duke
parents:
diff changeset
1089 // and save the caller's signal mask
a61af66fc99e Initial load
duke
parents:
diff changeset
1090 os::Solaris::hotspot_sigmask(thread);
a61af66fc99e Initial load
duke
parents:
diff changeset
1091
a61af66fc99e Initial load
duke
parents:
diff changeset
1092 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
1093 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1094
a61af66fc99e Initial load
duke
parents:
diff changeset
1095 bool os::create_main_thread(JavaThread* thread) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1096 #ifdef ASSERT
a61af66fc99e Initial load
duke
parents:
diff changeset
1097 thread->verify_not_published();
a61af66fc99e Initial load
duke
parents:
diff changeset
1098 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
1099 if (_starting_thread == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1100 _starting_thread = create_os_thread(thread, main_thread);
a61af66fc99e Initial load
duke
parents:
diff changeset
1101 if (_starting_thread == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1102 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
1103 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1104 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1105
a61af66fc99e Initial load
duke
parents:
diff changeset
1106 // The primodial thread is runnable from the start
a61af66fc99e Initial load
duke
parents:
diff changeset
1107 _starting_thread->set_state(RUNNABLE);
a61af66fc99e Initial load
duke
parents:
diff changeset
1108
a61af66fc99e Initial load
duke
parents:
diff changeset
1109 thread->set_osthread(_starting_thread);
a61af66fc99e Initial load
duke
parents:
diff changeset
1110
a61af66fc99e Initial load
duke
parents:
diff changeset
1111 // initialize signal mask for this thread
a61af66fc99e Initial load
duke
parents:
diff changeset
1112 // and save the caller's signal mask
a61af66fc99e Initial load
duke
parents:
diff changeset
1113 os::Solaris::hotspot_sigmask(thread);
a61af66fc99e Initial load
duke
parents:
diff changeset
1114
a61af66fc99e Initial load
duke
parents:
diff changeset
1115 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
1116 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1117
a61af66fc99e Initial load
duke
parents:
diff changeset
1118 // _T2_libthread is true if we believe we are running with the newer
a61af66fc99e Initial load
duke
parents:
diff changeset
1119 // SunSoft lwp/libthread.so (2.8 patch, 2.9 default)
a61af66fc99e Initial load
duke
parents:
diff changeset
1120 bool os::Solaris::_T2_libthread = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
1121
a61af66fc99e Initial load
duke
parents:
diff changeset
1122 bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1123 // Allocate the OSThread object
a61af66fc99e Initial load
duke
parents:
diff changeset
1124 OSThread* osthread = new OSThread(NULL, NULL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1125 if (osthread == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1126 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
1127 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1128
a61af66fc99e Initial load
duke
parents:
diff changeset
1129 if ( ThreadPriorityVerbose ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1130 char *thrtyp;
a61af66fc99e Initial load
duke
parents:
diff changeset
1131 switch ( thr_type ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1132 case vm_thread:
a61af66fc99e Initial load
duke
parents:
diff changeset
1133 thrtyp = (char *)"vm";
a61af66fc99e Initial load
duke
parents:
diff changeset
1134 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
1135 case cgc_thread:
a61af66fc99e Initial load
duke
parents:
diff changeset
1136 thrtyp = (char *)"cgc";
a61af66fc99e Initial load
duke
parents:
diff changeset
1137 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
1138 case pgc_thread:
a61af66fc99e Initial load
duke
parents:
diff changeset
1139 thrtyp = (char *)"pgc";
a61af66fc99e Initial load
duke
parents:
diff changeset
1140 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
1141 case java_thread:
a61af66fc99e Initial load
duke
parents:
diff changeset
1142 thrtyp = (char *)"java";
a61af66fc99e Initial load
duke
parents:
diff changeset
1143 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
1144 case compiler_thread:
a61af66fc99e Initial load
duke
parents:
diff changeset
1145 thrtyp = (char *)"compiler";
a61af66fc99e Initial load
duke
parents:
diff changeset
1146 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
1147 case watcher_thread:
a61af66fc99e Initial load
duke
parents:
diff changeset
1148 thrtyp = (char *)"watcher";
a61af66fc99e Initial load
duke
parents:
diff changeset
1149 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
1150 default:
a61af66fc99e Initial load
duke
parents:
diff changeset
1151 thrtyp = (char *)"unknown";
a61af66fc99e Initial load
duke
parents:
diff changeset
1152 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
1153 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1154 tty->print_cr("In create_thread, creating a %s thread\n", thrtyp);
a61af66fc99e Initial load
duke
parents:
diff changeset
1155 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1156
a61af66fc99e Initial load
duke
parents:
diff changeset
1157 // Calculate stack size if it's not specified by caller.
a61af66fc99e Initial load
duke
parents:
diff changeset
1158 if (stack_size == 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1159 // The default stack size 1M (2M for LP64).
a61af66fc99e Initial load
duke
parents:
diff changeset
1160 stack_size = (BytesPerWord >> 2) * K * K;
a61af66fc99e Initial load
duke
parents:
diff changeset
1161
a61af66fc99e Initial load
duke
parents:
diff changeset
1162 switch (thr_type) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1163 case os::java_thread:
a61af66fc99e Initial load
duke
parents:
diff changeset
1164 // Java threads use ThreadStackSize which default value can be changed with the flag -Xss
a61af66fc99e Initial load
duke
parents:
diff changeset
1165 if (JavaThread::stack_size_at_create() > 0) stack_size = JavaThread::stack_size_at_create();
a61af66fc99e Initial load
duke
parents:
diff changeset
1166 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
1167 case os::compiler_thread:
a61af66fc99e Initial load
duke
parents:
diff changeset
1168 if (CompilerThreadStackSize > 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1169 stack_size = (size_t)(CompilerThreadStackSize * K);
a61af66fc99e Initial load
duke
parents:
diff changeset
1170 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
1171 } // else fall through:
a61af66fc99e Initial load
duke
parents:
diff changeset
1172 // use VMThreadStackSize if CompilerThreadStackSize is not defined
a61af66fc99e Initial load
duke
parents:
diff changeset
1173 case os::vm_thread:
a61af66fc99e Initial load
duke
parents:
diff changeset
1174 case os::pgc_thread:
a61af66fc99e Initial load
duke
parents:
diff changeset
1175 case os::cgc_thread:
a61af66fc99e Initial load
duke
parents:
diff changeset
1176 case os::watcher_thread:
a61af66fc99e Initial load
duke
parents:
diff changeset
1177 if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K);
a61af66fc99e Initial load
duke
parents:
diff changeset
1178 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
1179 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1180 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1181 stack_size = MAX2(stack_size, os::Solaris::min_stack_allowed);
a61af66fc99e Initial load
duke
parents:
diff changeset
1182
a61af66fc99e Initial load
duke
parents:
diff changeset
1183 // Initial state is ALLOCATED but not INITIALIZED
a61af66fc99e Initial load
duke
parents:
diff changeset
1184 osthread->set_state(ALLOCATED);
a61af66fc99e Initial load
duke
parents:
diff changeset
1185
a61af66fc99e Initial load
duke
parents:
diff changeset
1186 if (os::Solaris::_os_thread_count > os::Solaris::_os_thread_limit) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1187 // We got lots of threads. Check if we still have some address space left.
a61af66fc99e Initial load
duke
parents:
diff changeset
1188 // Need to be at least 5Mb of unreserved address space. We do check by
a61af66fc99e Initial load
duke
parents:
diff changeset
1189 // trying to reserve some.
a61af66fc99e Initial load
duke
parents:
diff changeset
1190 const size_t VirtualMemoryBangSize = 20*K*K;
a61af66fc99e Initial load
duke
parents:
diff changeset
1191 char* mem = os::reserve_memory(VirtualMemoryBangSize);
a61af66fc99e Initial load
duke
parents:
diff changeset
1192 if (mem == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1193 delete osthread;
a61af66fc99e Initial load
duke
parents:
diff changeset
1194 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
1195 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1196 // Release the memory again
a61af66fc99e Initial load
duke
parents:
diff changeset
1197 os::release_memory(mem, VirtualMemoryBangSize);
a61af66fc99e Initial load
duke
parents:
diff changeset
1198 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1199 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1200
a61af66fc99e Initial load
duke
parents:
diff changeset
1201 // Setup osthread because the child thread may need it.
a61af66fc99e Initial load
duke
parents:
diff changeset
1202 thread->set_osthread(osthread);
a61af66fc99e Initial load
duke
parents:
diff changeset
1203
a61af66fc99e Initial load
duke
parents:
diff changeset
1204 // Create the Solaris thread
a61af66fc99e Initial load
duke
parents:
diff changeset
1205 // explicit THR_BOUND for T2_libthread case in case
a61af66fc99e Initial load
duke
parents:
diff changeset
1206 // that assumption is not accurate, but our alternate signal stack
a61af66fc99e Initial load
duke
parents:
diff changeset
1207 // handling is based on it which must have bound threads
a61af66fc99e Initial load
duke
parents:
diff changeset
1208 thread_t tid = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
1209 long flags = (UseDetachedThreads ? THR_DETACHED : 0) | THR_SUSPENDED
a61af66fc99e Initial load
duke
parents:
diff changeset
1210 | ((UseBoundThreads || os::Solaris::T2_libthread() ||
a61af66fc99e Initial load
duke
parents:
diff changeset
1211 (thr_type == vm_thread) ||
a61af66fc99e Initial load
duke
parents:
diff changeset
1212 (thr_type == cgc_thread) ||
a61af66fc99e Initial load
duke
parents:
diff changeset
1213 (thr_type == pgc_thread) ||
a61af66fc99e Initial load
duke
parents:
diff changeset
1214 (thr_type == compiler_thread && BackgroundCompilation)) ?
a61af66fc99e Initial load
duke
parents:
diff changeset
1215 THR_BOUND : 0);
a61af66fc99e Initial load
duke
parents:
diff changeset
1216 int status;
a61af66fc99e Initial load
duke
parents:
diff changeset
1217
a61af66fc99e Initial load
duke
parents:
diff changeset
1218 // 4376845 -- libthread/kernel don't provide enough LWPs to utilize all CPUs.
a61af66fc99e Initial load
duke
parents:
diff changeset
1219 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1220 // On multiprocessors systems, libthread sometimes under-provisions our
a61af66fc99e Initial load
duke
parents:
diff changeset
1221 // process with LWPs. On a 30-way systems, for instance, we could have
a61af66fc99e Initial load
duke
parents:
diff changeset
1222 // 50 user-level threads in ready state and only 2 or 3 LWPs assigned
a61af66fc99e Initial load
duke
parents:
diff changeset
1223 // to our process. This can result in under utilization of PEs.
a61af66fc99e Initial load
duke
parents:
diff changeset
1224 // I suspect the problem is related to libthread's LWP
a61af66fc99e Initial load
duke
parents:
diff changeset
1225 // pool management and to the kernel's SIGBLOCKING "last LWP parked"
a61af66fc99e Initial load
duke
parents:
diff changeset
1226 // upcall policy.
a61af66fc99e Initial load
duke
parents:
diff changeset
1227 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1228 // The following code is palliative -- it attempts to ensure that our
a61af66fc99e Initial load
duke
parents:
diff changeset
1229 // process has sufficient LWPs to take advantage of multiple PEs.
a61af66fc99e Initial load
duke
parents:
diff changeset
1230 // Proper long-term cures include using user-level threads bound to LWPs
a61af66fc99e Initial load
duke
parents:
diff changeset
1231 // (THR_BOUND) or using LWP-based synchronization. Note that there is a
a61af66fc99e Initial load
duke
parents:
diff changeset
1232 // slight timing window with respect to sampling _os_thread_count, but
a61af66fc99e Initial load
duke
parents:
diff changeset
1233 // the race is benign. Also, we should periodically recompute
a61af66fc99e Initial load
duke
parents:
diff changeset
1234 // _processors_online as the min of SC_NPROCESSORS_ONLN and the
a61af66fc99e Initial load
duke
parents:
diff changeset
1235 // the number of PEs in our partition. You might be tempted to use
a61af66fc99e Initial load
duke
parents:
diff changeset
1236 // THR_NEW_LWP here, but I'd recommend against it as that could
a61af66fc99e Initial load
duke
parents:
diff changeset
1237 // result in undesirable growth of the libthread's LWP pool.
a61af66fc99e Initial load
duke
parents:
diff changeset
1238 // The fix below isn't sufficient; for instance, it doesn't take into count
a61af66fc99e Initial load
duke
parents:
diff changeset
1239 // LWPs parked on IO. It does, however, help certain CPU-bound benchmarks.
a61af66fc99e Initial load
duke
parents:
diff changeset
1240 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1241 // Some pathologies this scheme doesn't handle:
a61af66fc99e Initial load
duke
parents:
diff changeset
1242 // * Threads can block, releasing the LWPs. The LWPs can age out.
a61af66fc99e Initial load
duke
parents:
diff changeset
1243 // When a large number of threads become ready again there aren't
a61af66fc99e Initial load
duke
parents:
diff changeset
1244 // enough LWPs available to service them. This can occur when the
a61af66fc99e Initial load
duke
parents:
diff changeset
1245 // number of ready threads oscillates.
a61af66fc99e Initial load
duke
parents:
diff changeset
1246 // * LWPs/Threads park on IO, thus taking the LWP out of circulation.
a61af66fc99e Initial load
duke
parents:
diff changeset
1247 //
a61af66fc99e Initial load
duke
parents:
diff changeset
1248 // Finally, we should call thr_setconcurrency() periodically to refresh
a61af66fc99e Initial load
duke
parents:
diff changeset
1249 // the LWP pool and thwart the LWP age-out mechanism.
a61af66fc99e Initial load
duke
parents:
diff changeset
1250 // The "+3" term provides a little slop -- we want to slightly overprovision.
a61af66fc99e Initial load
duke
parents:
diff changeset
1251
a61af66fc99e Initial load
duke
parents:
diff changeset
1252 if (AdjustConcurrency && os::Solaris::_os_thread_count < (_processors_online+3)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1253 if (!(flags & THR_BOUND)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1254 thr_setconcurrency (os::Solaris::_os_thread_count); // avoid starvation
a61af66fc99e Initial load
duke
parents:
diff changeset
1255 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1256 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1257 // Although this doesn't hurt, we should warn of undefined behavior
a61af66fc99e Initial load
duke
parents:
diff changeset
1258 // when using unbound T1 threads with schedctl(). This should never
a61af66fc99e Initial load
duke
parents:
diff changeset
1259 // happen, as the compiler and VM threads are always created bound
a61af66fc99e Initial load
duke
parents:
diff changeset
1260 DEBUG_ONLY(
a61af66fc99e Initial load
duke
parents:
diff changeset
1261 if ((VMThreadHintNoPreempt || CompilerThreadHintNoPreempt) &&
a61af66fc99e Initial load
duke
parents:
diff changeset
1262 (!os::Solaris::T2_libthread() && (!(flags & THR_BOUND))) &&
a61af66fc99e Initial load
duke
parents:
diff changeset
1263 ((thr_type == vm_thread) || (thr_type == cgc_thread) ||
a61af66fc99e Initial load
duke
parents:
diff changeset
1264 (thr_type == pgc_thread) || (thr_type == compiler_thread && BackgroundCompilation))) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1265 warning("schedctl behavior undefined when Compiler/VM/GC Threads are Unbound");
a61af66fc99e Initial load
duke
parents:
diff changeset
1266 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1267 );
a61af66fc99e Initial load
duke
parents:
diff changeset
1268
a61af66fc99e Initial load
duke
parents:
diff changeset
1269
a61af66fc99e Initial load
duke
parents:
diff changeset
1270 // Mark that we don't have an lwp or thread id yet.
a61af66fc99e Initial load
duke
parents:
diff changeset
1271 // In case we attempt to set the priority before the thread starts.
a61af66fc99e Initial load
duke
parents:
diff changeset
1272 osthread->set_lwp_id(-1);
a61af66fc99e Initial load
duke
parents:
diff changeset
1273 osthread->set_thread_id(-1);
a61af66fc99e Initial load
duke
parents:
diff changeset
1274
a61af66fc99e Initial load
duke
parents:
diff changeset
1275 status = thr_create(NULL, stack_size, java_start, thread, flags, &tid);
a61af66fc99e Initial load
duke
parents:
diff changeset
1276 if (status != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1277 if (PrintMiscellaneous && (Verbose || WizardMode)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1278 perror("os::create_thread");
a61af66fc99e Initial load
duke
parents:
diff changeset
1279 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1280 thread->set_osthread(NULL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1281 // Need to clean up stuff we've allocated so far
a61af66fc99e Initial load
duke
parents:
diff changeset
1282 delete osthread;
a61af66fc99e Initial load
duke
parents:
diff changeset
1283 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
1284 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1285
a61af66fc99e Initial load
duke
parents:
diff changeset
1286 Atomic::inc(&os::Solaris::_os_thread_count);
a61af66fc99e Initial load
duke
parents:
diff changeset
1287
a61af66fc99e Initial load
duke
parents:
diff changeset
1288 // Store info on the Solaris thread into the OSThread
a61af66fc99e Initial load
duke
parents:
diff changeset
1289 osthread->set_thread_id(tid);
a61af66fc99e Initial load
duke
parents:
diff changeset
1290
a61af66fc99e Initial load
duke
parents:
diff changeset
1291 // Remember that we created this thread so we can set priority on it
a61af66fc99e Initial load
duke
parents:
diff changeset
1292 osthread->set_vm_created();
a61af66fc99e Initial load
duke
parents:
diff changeset
1293
a61af66fc99e Initial load
duke
parents:
diff changeset
1294 // Set the default thread priority otherwise use NormalPriority
a61af66fc99e Initial load
duke
parents:
diff changeset
1295
a61af66fc99e Initial load
duke
parents:
diff changeset
1296 if ( UseThreadPriorities ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1297 thr_setprio(tid, (DefaultThreadPriority == -1) ?
a61af66fc99e Initial load
duke
parents:
diff changeset
1298 java_to_os_priority[NormPriority] :
a61af66fc99e Initial load
duke
parents:
diff changeset
1299 DefaultThreadPriority);
a61af66fc99e Initial load
duke
parents:
diff changeset
1300 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1301
a61af66fc99e Initial load
duke
parents:
diff changeset
1302 // Initial thread state is INITIALIZED, not SUSPENDED
a61af66fc99e Initial load
duke
parents:
diff changeset
1303 osthread->set_state(INITIALIZED);
a61af66fc99e Initial load
duke
parents:
diff changeset
1304
a61af66fc99e Initial load
duke
parents:
diff changeset
1305 // The thread is returned suspended (in state INITIALIZED), and is started higher up in the call chain
a61af66fc99e Initial load
duke
parents:
diff changeset
1306 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
1307 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1308
a61af66fc99e Initial load
duke
parents:
diff changeset
1309 /* defined for >= Solaris 10. This allows builds on earlier versions
a61af66fc99e Initial load
duke
parents:
diff changeset
1310 * of Solaris to take advantage of the newly reserved Solaris JVM signals
a61af66fc99e Initial load
duke
parents:
diff changeset
1311 * With SIGJVM1, SIGJVM2, INTERRUPT_SIGNAL is SIGJVM1, ASYNC_SIGNAL is SIGJVM2
a61af66fc99e Initial load
duke
parents:
diff changeset
1312 * and -XX:+UseAltSigs does nothing since these should have no conflict
a61af66fc99e Initial load
duke
parents:
diff changeset
1313 */
a61af66fc99e Initial load
duke
parents:
diff changeset
1314 #if !defined(SIGJVM1)
a61af66fc99e Initial load
duke
parents:
diff changeset
1315 #define SIGJVM1 39
a61af66fc99e Initial load
duke
parents:
diff changeset
1316 #define SIGJVM2 40
a61af66fc99e Initial load
duke
parents:
diff changeset
1317 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
1318
a61af66fc99e Initial load
duke
parents:
diff changeset
1319 debug_only(static bool signal_sets_initialized = false);
a61af66fc99e Initial load
duke
parents:
diff changeset
1320 static sigset_t unblocked_sigs, vm_sigs, allowdebug_blocked_sigs;
a61af66fc99e Initial load
duke
parents:
diff changeset
1321 int os::Solaris::_SIGinterrupt = INTERRUPT_SIGNAL;
a61af66fc99e Initial load
duke
parents:
diff changeset
1322 int os::Solaris::_SIGasync = ASYNC_SIGNAL;
a61af66fc99e Initial load
duke
parents:
diff changeset
1323
a61af66fc99e Initial load
duke
parents:
diff changeset
1324 bool os::Solaris::is_sig_ignored(int sig) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1325 struct sigaction oact;
a61af66fc99e Initial load
duke
parents:
diff changeset
1326 sigaction(sig, (struct sigaction*)NULL, &oact);
a61af66fc99e Initial load
duke
parents:
diff changeset
1327 void* ohlr = oact.sa_sigaction ? CAST_FROM_FN_PTR(void*, oact.sa_sigaction)
a61af66fc99e Initial load
duke
parents:
diff changeset
1328 : CAST_FROM_FN_PTR(void*, oact.sa_handler);
a61af66fc99e Initial load
duke
parents:
diff changeset
1329 if (ohlr == CAST_FROM_FN_PTR(void*, SIG_IGN))
a61af66fc99e Initial load
duke
parents:
diff changeset
1330 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
1331 else
a61af66fc99e Initial load
duke
parents:
diff changeset
1332 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
1333 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1334
a61af66fc99e Initial load
duke
parents:
diff changeset
1335 // Note: SIGRTMIN is a macro that calls sysconf() so it will
a61af66fc99e Initial load
duke
parents:
diff changeset
1336 // dynamically detect SIGRTMIN value for the system at runtime, not buildtime
a61af66fc99e Initial load
duke
parents:
diff changeset
1337 static bool isJVM1available() {
a61af66fc99e Initial load
duke
parents:
diff changeset
1338 return SIGJVM1 < SIGRTMIN;
a61af66fc99e Initial load
duke
parents:
diff changeset
1339 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1340
a61af66fc99e Initial load
duke
parents:
diff changeset
1341 void os::Solaris::signal_sets_init() {
a61af66fc99e Initial load
duke
parents:
diff changeset
1342 // Should also have an assertion stating we are still single-threaded.
a61af66fc99e Initial load
duke
parents:
diff changeset
1343 assert(!signal_sets_initialized, "Already initialized");
a61af66fc99e Initial load
duke
parents:
diff changeset
1344 // Fill in signals that are necessarily unblocked for all threads in
a61af66fc99e Initial load
duke
parents:
diff changeset
1345 // the VM. Currently, we unblock the following signals:
a61af66fc99e Initial load
duke
parents:
diff changeset
1346 // SHUTDOWN{1,2,3}_SIGNAL: for shutdown hooks support (unless over-ridden
a61af66fc99e Initial load
duke
parents:
diff changeset
1347 // by -Xrs (=ReduceSignalUsage));
a61af66fc99e Initial load
duke
parents:
diff changeset
1348 // BREAK_SIGNAL which is unblocked only by the VM thread and blocked by all
a61af66fc99e Initial load
duke
parents:
diff changeset
1349 // other threads. The "ReduceSignalUsage" boolean tells us not to alter
a61af66fc99e Initial load
duke
parents:
diff changeset
1350 // the dispositions or masks wrt these signals.
a61af66fc99e Initial load
duke
parents:
diff changeset
1351 // Programs embedding the VM that want to use the above signals for their
a61af66fc99e Initial load
duke
parents:
diff changeset
1352 // own purposes must, at this time, use the "-Xrs" option to prevent
a61af66fc99e Initial load
duke
parents:
diff changeset
1353 // interference with shutdown hooks and BREAK_SIGNAL thread dumping.
a61af66fc99e Initial load
duke
parents:
diff changeset
1354 // (See bug 4345157, and other related bugs).
a61af66fc99e Initial load
duke
parents:
diff changeset
1355 // In reality, though, unblocking these signals is really a nop, since
a61af66fc99e Initial load
duke
parents:
diff changeset
1356 // these signals are not blocked by default.
a61af66fc99e Initial load
duke
parents:
diff changeset
1357 sigemptyset(&unblocked_sigs);
a61af66fc99e Initial load
duke
parents:
diff changeset
1358 sigemptyset(&allowdebug_blocked_sigs);
a61af66fc99e Initial load
duke
parents:
diff changeset
1359 sigaddset(&unblocked_sigs, SIGILL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1360 sigaddset(&unblocked_sigs, SIGSEGV);
a61af66fc99e Initial load
duke
parents:
diff changeset
1361 sigaddset(&unblocked_sigs, SIGBUS);
a61af66fc99e Initial load
duke
parents:
diff changeset
1362 sigaddset(&unblocked_sigs, SIGFPE);
a61af66fc99e Initial load
duke
parents:
diff changeset
1363
a61af66fc99e Initial load
duke
parents:
diff changeset
1364 if (isJVM1available) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1365 os::Solaris::set_SIGinterrupt(SIGJVM1);
a61af66fc99e Initial load
duke
parents:
diff changeset
1366 os::Solaris::set_SIGasync(SIGJVM2);
a61af66fc99e Initial load
duke
parents:
diff changeset
1367 } else if (UseAltSigs) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1368 os::Solaris::set_SIGinterrupt(ALT_INTERRUPT_SIGNAL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1369 os::Solaris::set_SIGasync(ALT_ASYNC_SIGNAL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1370 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1371 os::Solaris::set_SIGinterrupt(INTERRUPT_SIGNAL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1372 os::Solaris::set_SIGasync(ASYNC_SIGNAL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1373 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1374
a61af66fc99e Initial load
duke
parents:
diff changeset
1375 sigaddset(&unblocked_sigs, os::Solaris::SIGinterrupt());
a61af66fc99e Initial load
duke
parents:
diff changeset
1376 sigaddset(&unblocked_sigs, os::Solaris::SIGasync());
a61af66fc99e Initial load
duke
parents:
diff changeset
1377
a61af66fc99e Initial load
duke
parents:
diff changeset
1378 if (!ReduceSignalUsage) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1379 if (!os::Solaris::is_sig_ignored(SHUTDOWN1_SIGNAL)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1380 sigaddset(&unblocked_sigs, SHUTDOWN1_SIGNAL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1381 sigaddset(&allowdebug_blocked_sigs, SHUTDOWN1_SIGNAL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1382 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1383 if (!os::Solaris::is_sig_ignored(SHUTDOWN2_SIGNAL)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1384 sigaddset(&unblocked_sigs, SHUTDOWN2_SIGNAL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1385 sigaddset(&allowdebug_blocked_sigs, SHUTDOWN2_SIGNAL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1386 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1387 if (!os::Solaris::is_sig_ignored(SHUTDOWN3_SIGNAL)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1388 sigaddset(&unblocked_sigs, SHUTDOWN3_SIGNAL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1389 sigaddset(&allowdebug_blocked_sigs, SHUTDOWN3_SIGNAL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1390 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1391 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1392 // Fill in signals that are blocked by all but the VM thread.
a61af66fc99e Initial load
duke
parents:
diff changeset
1393 sigemptyset(&vm_sigs);
a61af66fc99e Initial load
duke
parents:
diff changeset
1394 if (!ReduceSignalUsage)
a61af66fc99e Initial load
duke
parents:
diff changeset
1395 sigaddset(&vm_sigs, BREAK_SIGNAL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1396 debug_only(signal_sets_initialized = true);
a61af66fc99e Initial load
duke
parents:
diff changeset
1397
a61af66fc99e Initial load
duke
parents:
diff changeset
1398 // For diagnostics only used in run_periodic_checks
a61af66fc99e Initial load
duke
parents:
diff changeset
1399 sigemptyset(&check_signal_done);
a61af66fc99e Initial load
duke
parents:
diff changeset
1400 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1401
a61af66fc99e Initial load
duke
parents:
diff changeset
1402 // These are signals that are unblocked while a thread is running Java.
a61af66fc99e Initial load
duke
parents:
diff changeset
1403 // (For some reason, they get blocked by default.)
a61af66fc99e Initial load
duke
parents:
diff changeset
1404 sigset_t* os::Solaris::unblocked_signals() {
a61af66fc99e Initial load
duke
parents:
diff changeset
1405 assert(signal_sets_initialized, "Not initialized");
a61af66fc99e Initial load
duke
parents:
diff changeset
1406 return &unblocked_sigs;
a61af66fc99e Initial load
duke
parents:
diff changeset
1407 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1408
a61af66fc99e Initial load
duke
parents:
diff changeset
1409 // These are the signals that are blocked while a (non-VM) thread is
a61af66fc99e Initial load
duke
parents:
diff changeset
1410 // running Java. Only the VM thread handles these signals.
a61af66fc99e Initial load
duke
parents:
diff changeset
1411 sigset_t* os::Solaris::vm_signals() {
a61af66fc99e Initial load
duke
parents:
diff changeset
1412 assert(signal_sets_initialized, "Not initialized");
a61af66fc99e Initial load
duke
parents:
diff changeset
1413 return &vm_sigs;
a61af66fc99e Initial load
duke
parents:
diff changeset
1414 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1415
a61af66fc99e Initial load
duke
parents:
diff changeset
1416 // These are signals that are blocked during cond_wait to allow debugger in
a61af66fc99e Initial load
duke
parents:
diff changeset
1417 sigset_t* os::Solaris::allowdebug_blocked_signals() {
a61af66fc99e Initial load
duke
parents:
diff changeset
1418 assert(signal_sets_initialized, "Not initialized");
a61af66fc99e Initial load
duke
parents:
diff changeset
1419 return &allowdebug_blocked_sigs;
a61af66fc99e Initial load
duke
parents:
diff changeset
1420 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1421
a61af66fc99e Initial load
duke
parents:
diff changeset
1422 // First crack at OS-specific initialization, from inside the new thread.
a61af66fc99e Initial load
duke
parents:
diff changeset
1423 void os::initialize_thread() {
a61af66fc99e Initial load
duke
parents:
diff changeset
1424 int r = thr_main() ;
a61af66fc99e Initial load
duke
parents:
diff changeset
1425 guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ;
a61af66fc99e Initial load
duke
parents:
diff changeset
1426 if (r) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1427 JavaThread* jt = (JavaThread *)Thread::current();
a61af66fc99e Initial load
duke
parents:
diff changeset
1428 assert(jt != NULL,"Sanity check");
a61af66fc99e Initial load
duke
parents:
diff changeset
1429 size_t stack_size;
a61af66fc99e Initial load
duke
parents:
diff changeset
1430 address base = jt->stack_base();
a61af66fc99e Initial load
duke
parents:
diff changeset
1431 if (Arguments::created_by_java_launcher()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1432 // Use 2MB to allow for Solaris 7 64 bit mode.
a61af66fc99e Initial load
duke
parents:
diff changeset
1433 stack_size = JavaThread::stack_size_at_create() == 0
a61af66fc99e Initial load
duke
parents:
diff changeset
1434 ? 2048*K : JavaThread::stack_size_at_create();
a61af66fc99e Initial load
duke
parents:
diff changeset
1435
a61af66fc99e Initial load
duke
parents:
diff changeset
1436 // There are rare cases when we may have already used more than
a61af66fc99e Initial load
duke
parents:
diff changeset
1437 // the basic stack size allotment before this method is invoked.
a61af66fc99e Initial load
duke
parents:
diff changeset
1438 // Attempt to allow for a normally sized java_stack.
a61af66fc99e Initial load
duke
parents:
diff changeset
1439 size_t current_stack_offset = (size_t)(base - (address)&stack_size);
a61af66fc99e Initial load
duke
parents:
diff changeset
1440 stack_size += ReservedSpace::page_align_size_down(current_stack_offset);
a61af66fc99e Initial load
duke
parents:
diff changeset
1441 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1442 // 6269555: If we were not created by a Java launcher, i.e. if we are
a61af66fc99e Initial load
duke
parents:
diff changeset
1443 // running embedded in a native application, treat the primordial thread
a61af66fc99e Initial load
duke
parents:
diff changeset
1444 // as much like a native attached thread as possible. This means using
a61af66fc99e Initial load
duke
parents:
diff changeset
1445 // the current stack size from thr_stksegment(), unless it is too large
a61af66fc99e Initial load
duke
parents:
diff changeset
1446 // to reliably setup guard pages. A reasonable max size is 8MB.
a61af66fc99e Initial load
duke
parents:
diff changeset
1447 size_t current_size = current_stack_size();
a61af66fc99e Initial load
duke
parents:
diff changeset
1448 // This should never happen, but just in case....
a61af66fc99e Initial load
duke
parents:
diff changeset
1449 if (current_size == 0) current_size = 2 * K * K;
a61af66fc99e Initial load
duke
parents:
diff changeset
1450 stack_size = current_size > (8 * K * K) ? (8 * K * K) : current_size;
a61af66fc99e Initial load
duke
parents:
diff changeset
1451 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1452 address bottom = (address)align_size_up((intptr_t)(base - stack_size), os::vm_page_size());;
a61af66fc99e Initial load
duke
parents:
diff changeset
1453 stack_size = (size_t)(base - bottom);
a61af66fc99e Initial load
duke
parents:
diff changeset
1454
a61af66fc99e Initial load
duke
parents:
diff changeset
1455 assert(stack_size > 0, "Stack size calculation problem");
a61af66fc99e Initial load
duke
parents:
diff changeset
1456
a61af66fc99e Initial load
duke
parents:
diff changeset
1457 if (stack_size > jt->stack_size()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1458 NOT_PRODUCT(
a61af66fc99e Initial load
duke
parents:
diff changeset
1459 struct rlimit limits;
a61af66fc99e Initial load
duke
parents:
diff changeset
1460 getrlimit(RLIMIT_STACK, &limits);
a61af66fc99e Initial load
duke
parents:
diff changeset
1461 size_t size = adjust_stack_size(base, (size_t)limits.rlim_cur);
a61af66fc99e Initial load
duke
parents:
diff changeset
1462 assert(size >= jt->stack_size(), "Stack size problem in main thread");
a61af66fc99e Initial load
duke
parents:
diff changeset
1463 )
a61af66fc99e Initial load
duke
parents:
diff changeset
1464 tty->print_cr(
a61af66fc99e Initial load
duke
parents:
diff changeset
1465 "Stack size of %d Kb exceeds current limit of %d Kb.\n"
a61af66fc99e Initial load
duke
parents:
diff changeset
1466 "(Stack sizes are rounded up to a multiple of the system page size.)\n"
a61af66fc99e Initial load
duke
parents:
diff changeset
1467 "See limit(1) to increase the stack size limit.",
a61af66fc99e Initial load
duke
parents:
diff changeset
1468 stack_size / K, jt->stack_size() / K);
a61af66fc99e Initial load
duke
parents:
diff changeset
1469 vm_exit(1);
a61af66fc99e Initial load
duke
parents:
diff changeset
1470 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1471 assert(jt->stack_size() >= stack_size,
a61af66fc99e Initial load
duke
parents:
diff changeset
1472 "Attempt to map more stack than was allocated");
a61af66fc99e Initial load
duke
parents:
diff changeset
1473 jt->set_stack_size(stack_size);
a61af66fc99e Initial load
duke
parents:
diff changeset
1474 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1475
a61af66fc99e Initial load
duke
parents:
diff changeset
1476 // 5/22/01: Right now alternate signal stacks do not handle
a61af66fc99e Initial load
duke
parents:
diff changeset
1477 // throwing stack overflow exceptions, see bug 4463178
a61af66fc99e Initial load
duke
parents:
diff changeset
1478 // Until a fix is found for this, T2 will NOT imply alternate signal
a61af66fc99e Initial load
duke
parents:
diff changeset
1479 // stacks.
a61af66fc99e Initial load
duke
parents:
diff changeset
1480 // If using T2 libthread threads, install an alternate signal stack.
a61af66fc99e Initial load
duke
parents:
diff changeset
1481 // Because alternate stacks associate with LWPs on Solaris,
a61af66fc99e Initial load
duke
parents:
diff changeset
1482 // see sigaltstack(2), if using UNBOUND threads, or if UseBoundThreads
a61af66fc99e Initial load
duke
parents:
diff changeset
1483 // we prefer to explicitly stack bang.
a61af66fc99e Initial load
duke
parents:
diff changeset
1484 // If not using T2 libthread, but using UseBoundThreads any threads
a61af66fc99e Initial load
duke
parents:
diff changeset
1485 // (primordial thread, jni_attachCurrentThread) we do not create,
a61af66fc99e Initial load
duke
parents:
diff changeset
1486 // probably are not bound, therefore they can not have an alternate
a61af66fc99e Initial load
duke
parents:
diff changeset
1487 // signal stack. Since our stack banging code is generated and
a61af66fc99e Initial load
duke
parents:
diff changeset
1488 // is shared across threads, all threads must be bound to allow
a61af66fc99e Initial load
duke
parents:
diff changeset
1489 // using alternate signal stacks. The alternative is to interpose
a61af66fc99e Initial load
duke
parents:
diff changeset
1490 // on _lwp_create to associate an alt sig stack with each LWP,
a61af66fc99e Initial load
duke
parents:
diff changeset
1491 // and this could be a problem when the JVM is embedded.
a61af66fc99e Initial load
duke
parents:
diff changeset
1492 // We would prefer to use alternate signal stacks with T2
a61af66fc99e Initial load
duke
parents:
diff changeset
1493 // Since there is currently no accurate way to detect T2
a61af66fc99e Initial load
duke
parents:
diff changeset
1494 // we do not. Assuming T2 when running T1 causes sig 11s or assertions
a61af66fc99e Initial load
duke
parents:
diff changeset
1495 // on installing alternate signal stacks
a61af66fc99e Initial load
duke
parents:
diff changeset
1496
a61af66fc99e Initial load
duke
parents:
diff changeset
1497
a61af66fc99e Initial load
duke
parents:
diff changeset
1498 // 05/09/03: removed alternate signal stack support for Solaris
a61af66fc99e Initial load
duke
parents:
diff changeset
1499 // The alternate signal stack mechanism is no longer needed to
a61af66fc99e Initial load
duke
parents:
diff changeset
1500 // handle stack overflow. This is now handled by allocating
a61af66fc99e Initial load
duke
parents:
diff changeset
1501 // guard pages (red zone) and stackbanging.
a61af66fc99e Initial load
duke
parents:
diff changeset
1502 // Initially the alternate signal stack mechanism was removed because
a61af66fc99e Initial load
duke
parents:
diff changeset
1503 // it did not work with T1 llibthread. Alternate
a61af66fc99e Initial load
duke
parents:
diff changeset
1504 // signal stacks MUST have all threads bound to lwps. Applications
a61af66fc99e Initial load
duke
parents:
diff changeset
1505 // can create their own threads and attach them without their being
a61af66fc99e Initial load
duke
parents:
diff changeset
1506 // bound under T1. This is frequently the case for the primordial thread.
a61af66fc99e Initial load
duke
parents:
diff changeset
1507 // If we were ever to reenable this mechanism we would need to
a61af66fc99e Initial load
duke
parents:
diff changeset
1508 // use the dynamic check for T2 libthread.
a61af66fc99e Initial load
duke
parents:
diff changeset
1509
a61af66fc99e Initial load
duke
parents:
diff changeset
1510 os::Solaris::init_thread_fpu_state();
a61af66fc99e Initial load
duke
parents:
diff changeset
1511 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1512
a61af66fc99e Initial load
duke
parents:
diff changeset
1513
a61af66fc99e Initial load
duke
parents:
diff changeset
1514
a61af66fc99e Initial load
duke
parents:
diff changeset
1515 // Free Solaris resources related to the OSThread
a61af66fc99e Initial load
duke
parents:
diff changeset
1516 void os::free_thread(OSThread* osthread) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1517 assert(osthread != NULL, "os::free_thread but osthread not set");
a61af66fc99e Initial load
duke
parents:
diff changeset
1518
a61af66fc99e Initial load
duke
parents:
diff changeset
1519
a61af66fc99e Initial load
duke
parents:
diff changeset
1520 // We are told to free resources of the argument thread,
a61af66fc99e Initial load
duke
parents:
diff changeset
1521 // but we can only really operate on the current thread.
a61af66fc99e Initial load
duke
parents:
diff changeset
1522 // The main thread must take the VMThread down synchronously
a61af66fc99e Initial load
duke
parents:
diff changeset
1523 // before the main thread exits and frees up CodeHeap
a61af66fc99e Initial load
duke
parents:
diff changeset
1524 guarantee((Thread::current()->osthread() == osthread
a61af66fc99e Initial load
duke
parents:
diff changeset
1525 || (osthread == VMThread::vm_thread()->osthread())), "os::free_thread but not current thread");
a61af66fc99e Initial load
duke
parents:
diff changeset
1526 if (Thread::current()->osthread() == osthread) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1527 // Restore caller's signal mask
a61af66fc99e Initial load
duke
parents:
diff changeset
1528 sigset_t sigmask = osthread->caller_sigmask();
a61af66fc99e Initial load
duke
parents:
diff changeset
1529 thr_sigsetmask(SIG_SETMASK, &sigmask, NULL);
a61af66fc99e Initial load
duke
parents:
diff changeset
1530 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1531 delete osthread;
a61af66fc99e Initial load
duke
parents:
diff changeset
1532 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1533
a61af66fc99e Initial load
duke
parents:
diff changeset
1534 void os::pd_start_thread(Thread* thread) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1535 int status = thr_continue(thread->osthread()->thread_id());
a61af66fc99e Initial load
duke
parents:
diff changeset
1536 assert_status(status == 0, status, "thr_continue failed");
a61af66fc99e Initial load
duke
parents:
diff changeset
1537 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1538
a61af66fc99e Initial load
duke
parents:
diff changeset
1539
a61af66fc99e Initial load
duke
parents:
diff changeset
1540 intx os::current_thread_id() {
a61af66fc99e Initial load
duke
parents:
diff changeset
1541 return (intx)thr_self();
a61af66fc99e Initial load
duke
parents:
diff changeset
1542 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1543
a61af66fc99e Initial load
duke
parents:
diff changeset
1544 static pid_t _initial_pid = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
1545
a61af66fc99e Initial load
duke
parents:
diff changeset
1546 int os::current_process_id() {
a61af66fc99e Initial load
duke
parents:
diff changeset
1547 return (int)(_initial_pid ? _initial_pid : getpid());
a61af66fc99e Initial load
duke
parents:
diff changeset
1548 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1549
a61af66fc99e Initial load
duke
parents:
diff changeset
1550 int os::allocate_thread_local_storage() {
a61af66fc99e Initial load
duke
parents:
diff changeset
1551 // %%% in Win32 this allocates a memory segment pointed to by a
a61af66fc99e Initial load
duke
parents:
diff changeset
1552 // register. Dan Stein can implement a similar feature in
a61af66fc99e Initial load
duke
parents:
diff changeset
1553 // Solaris. Alternatively, the VM can do the same thing
a61af66fc99e Initial load
duke
parents:
diff changeset
1554 // explicitly: malloc some storage and keep the pointer in a
a61af66fc99e Initial load
duke
parents:
diff changeset
1555 // register (which is part of the thread's context) (or keep it
a61af66fc99e Initial load
duke
parents:
diff changeset
1556 // in TLS).
a61af66fc99e Initial load
duke
parents:
diff changeset
1557 // %%% In current versions of Solaris, thr_self and TSD can
a61af66fc99e Initial load
duke
parents:
diff changeset
1558 // be accessed via short sequences of displaced indirections.
a61af66fc99e Initial load
duke
parents:
diff changeset
1559 // The value of thr_self is available as %g7(36).
a61af66fc99e Initial load
duke
parents:
diff changeset
1560 // The value of thr_getspecific(k) is stored in %g7(12)(4)(k*4-4),
a61af66fc99e Initial load
duke
parents:
diff changeset
1561 // assuming that the current thread already has a value bound to k.
a61af66fc99e Initial load
duke
parents:
diff changeset
1562 // It may be worth experimenting with such access patterns,
a61af66fc99e Initial load
duke
parents:
diff changeset
1563 // and later having the parameters formally exported from a Solaris
a61af66fc99e Initial load
duke
parents:
diff changeset
1564 // interface. I think, however, that it will be faster to
a61af66fc99e Initial load
duke
parents:
diff changeset
1565 // maintain the invariant that %g2 always contains the
a61af66fc99e Initial load
duke
parents:
diff changeset
1566 // JavaThread in Java code, and have stubs simply
a61af66fc99e Initial load
duke
parents:
diff changeset
1567 // treat %g2 as a caller-save register, preserving it in a %lN.
a61af66fc99e Initial load
duke
parents:
diff changeset
1568 thread_key_t tk;
a61af66fc99e Initial load
duke
parents:
diff changeset
1569 if (thr_keycreate( &tk, NULL ) )
a61af66fc99e Initial load
duke
parents:
diff changeset
1570 fatal1("os::allocate_thread_local_storage: thr_keycreate failed (%s)", strerror(errno));
a61af66fc99e Initial load
duke
parents:
diff changeset
1571 return int(tk);
a61af66fc99e Initial load
duke
parents:
diff changeset
1572 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1573
a61af66fc99e Initial load
duke
parents:
diff changeset
1574 void os::free_thread_local_storage(int index) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1575 // %%% don't think we need anything here
a61af66fc99e Initial load
duke
parents:
diff changeset
1576 // if ( pthread_key_delete((pthread_key_t) tk) )
a61af66fc99e Initial load
duke
parents:
diff changeset
1577 // fatal("os::free_thread_local_storage: pthread_key_delete failed");
a61af66fc99e Initial load
duke
parents:
diff changeset
1578 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1579
a61af66fc99e Initial load
duke
parents:
diff changeset
1580 #define SMALLINT 32 // libthread allocate for tsd_common is a version specific
a61af66fc99e Initial load
duke
parents:
diff changeset
1581 // small number - point is NO swap space available
a61af66fc99e Initial load
duke
parents:
diff changeset
1582 void os::thread_local_storage_at_put(int index, void* value) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1583 // %%% this is used only in threadLocalStorage.cpp
a61af66fc99e Initial load
duke
parents:
diff changeset
1584 if (thr_setspecific((thread_key_t)index, value)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1585 if (errno == ENOMEM) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1586 vm_exit_out_of_memory(SMALLINT, "thr_setspecific: out of swap space");
a61af66fc99e Initial load
duke
parents:
diff changeset
1587 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1588 fatal1("os::thread_local_storage_at_put: thr_setspecific failed (%s)", strerror(errno));
a61af66fc99e Initial load
duke
parents:
diff changeset
1589 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1590 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1591 ThreadLocalStorage::set_thread_in_slot ((Thread *) value) ;
a61af66fc99e Initial load
duke
parents:
diff changeset
1592 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1593 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1594
a61af66fc99e Initial load
duke
parents:
diff changeset
1595 // This function could be called before TLS is initialized, for example, when
a61af66fc99e Initial load
duke
parents:
diff changeset
1596 // VM receives an async signal or when VM causes a fatal error during
a61af66fc99e Initial load
duke
parents:
diff changeset
1597 // initialization. Return NULL if thr_getspecific() fails.
a61af66fc99e Initial load
duke
parents:
diff changeset
1598 void* os::thread_local_storage_at(int index) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1599 // %%% this is used only in threadLocalStorage.cpp
a61af66fc99e Initial load
duke
parents:
diff changeset
1600 void* r = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
1601 return thr_getspecific((thread_key_t)index, &r) != 0 ? NULL : r;
a61af66fc99e Initial load
duke
parents:
diff changeset
1602 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1603
a61af66fc99e Initial load
duke
parents:
diff changeset
1604
a61af66fc99e Initial load
duke
parents:
diff changeset
1605 const int NANOSECS_PER_MILLISECS = 1000000;
a61af66fc99e Initial load
duke
parents:
diff changeset
1606 // gethrtime can move backwards if read from one cpu and then a different cpu
a61af66fc99e Initial load
duke
parents:
diff changeset
1607 // getTimeNanos is guaranteed to not move backward on Solaris
a61af66fc99e Initial load
duke
parents:
diff changeset
1608 // local spinloop created as faster for a CAS on an int than
a61af66fc99e Initial load
duke
parents:
diff changeset
1609 // a CAS on a 64bit jlong. Also Atomic::cmpxchg for jlong is not
a61af66fc99e Initial load
duke
parents:
diff changeset
1610 // supported on sparc v8 or pre supports_cx8 intel boxes.
a61af66fc99e Initial load
duke
parents:
diff changeset
1611 // oldgetTimeNanos for systems which do not support CAS on 64bit jlong
a61af66fc99e Initial load
duke
parents:
diff changeset
1612 // i.e. sparc v8 and pre supports_cx8 (i486) intel boxes
a61af66fc99e Initial load
duke
parents:
diff changeset
1613 inline hrtime_t oldgetTimeNanos() {
a61af66fc99e Initial load
duke
parents:
diff changeset
1614 int gotlock = LOCK_INVALID;
a61af66fc99e Initial load
duke
parents:
diff changeset
1615 hrtime_t newtime = gethrtime();
a61af66fc99e Initial load
duke
parents:
diff changeset
1616
a61af66fc99e Initial load
duke
parents:
diff changeset
1617 for (;;) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1618 // grab lock for max_hrtime
a61af66fc99e Initial load
duke
parents:
diff changeset
1619 int curlock = max_hrtime_lock;
a61af66fc99e Initial load
duke
parents:
diff changeset
1620 if (curlock & LOCK_BUSY) continue;
a61af66fc99e Initial load
duke
parents:
diff changeset
1621 if (gotlock = Atomic::cmpxchg(LOCK_BUSY, &max_hrtime_lock, LOCK_FREE) != LOCK_FREE) continue;
a61af66fc99e Initial load
duke
parents:
diff changeset
1622 if (newtime > max_hrtime) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1623 max_hrtime = newtime;
a61af66fc99e Initial load
duke
parents:
diff changeset
1624 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1625 newtime = max_hrtime;
a61af66fc99e Initial load
duke
parents:
diff changeset
1626 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1627 // release lock
a61af66fc99e Initial load
duke
parents:
diff changeset
1628 max_hrtime_lock = LOCK_FREE;
a61af66fc99e Initial load
duke
parents:
diff changeset
1629 return newtime;
a61af66fc99e Initial load
duke
parents:
diff changeset
1630 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1631 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1632 // gethrtime can move backwards if read from one cpu and then a different cpu
a61af66fc99e Initial load
duke
parents:
diff changeset
1633 // getTimeNanos is guaranteed to not move backward on Solaris
a61af66fc99e Initial load
duke
parents:
diff changeset
1634 inline hrtime_t getTimeNanos() {
a61af66fc99e Initial load
duke
parents:
diff changeset
1635 if (VM_Version::supports_cx8()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1636 bool retry = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
1637 hrtime_t newtime = gethrtime();
a61af66fc99e Initial load
duke
parents:
diff changeset
1638 hrtime_t oldmaxtime = max_hrtime;
a61af66fc99e Initial load
duke
parents:
diff changeset
1639 hrtime_t retmaxtime = oldmaxtime;
a61af66fc99e Initial load
duke
parents:
diff changeset
1640 while ((newtime > retmaxtime) && (retry == false || retmaxtime != oldmaxtime)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1641 oldmaxtime = retmaxtime;
a61af66fc99e Initial load
duke
parents:
diff changeset
1642 retmaxtime = Atomic::cmpxchg(newtime, (volatile jlong *)&max_hrtime, oldmaxtime);
a61af66fc99e Initial load
duke
parents:
diff changeset
1643 retry = true;
a61af66fc99e Initial load
duke
parents:
diff changeset
1644 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1645 return (newtime > retmaxtime) ? newtime : retmaxtime;
a61af66fc99e Initial load
duke
parents:
diff changeset
1646 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1647 return oldgetTimeNanos();
a61af66fc99e Initial load
duke
parents:
diff changeset
1648 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1649 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1650
a61af66fc99e Initial load
duke
parents:
diff changeset
1651 // Time since start-up in seconds to a fine granularity.
a61af66fc99e Initial load
duke
parents:
diff changeset
1652 // Used by VMSelfDestructTimer and the MemProfiler.
a61af66fc99e Initial load
duke
parents:
diff changeset
1653 double os::elapsedTime() {
a61af66fc99e Initial load
duke
parents:
diff changeset
1654 return (double)(getTimeNanos() - first_hrtime) / (double)hrtime_hz;
a61af66fc99e Initial load
duke
parents:
diff changeset
1655 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1656
a61af66fc99e Initial load
duke
parents:
diff changeset
1657 jlong os::elapsed_counter() {
a61af66fc99e Initial load
duke
parents:
diff changeset
1658 return (jlong)(getTimeNanos() - first_hrtime);
a61af66fc99e Initial load
duke
parents:
diff changeset
1659 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1660
a61af66fc99e Initial load
duke
parents:
diff changeset
1661 jlong os::elapsed_frequency() {
a61af66fc99e Initial load
duke
parents:
diff changeset
1662 return hrtime_hz;
a61af66fc99e Initial load
duke
parents:
diff changeset
1663 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1664
a61af66fc99e Initial load
duke
parents:
diff changeset
1665 // Return the real, user, and system times in seconds from an
a61af66fc99e Initial load
duke
parents:
diff changeset
1666 // arbitrary fixed point in the past.
a61af66fc99e Initial load
duke
parents:
diff changeset
1667 bool os::getTimesSecs(double* process_real_time,
a61af66fc99e Initial load
duke
parents:
diff changeset
1668 double* process_user_time,
a61af66fc99e Initial load
duke
parents:
diff changeset
1669 double* process_system_time) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1670 struct tms ticks;
a61af66fc99e Initial load
duke
parents:
diff changeset
1671 clock_t real_ticks = times(&ticks);
a61af66fc99e Initial load
duke
parents:
diff changeset
1672
a61af66fc99e Initial load
duke
parents:
diff changeset
1673 if (real_ticks == (clock_t) (-1)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1674 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
1675 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1676 double ticks_per_second = (double) clock_tics_per_sec;
a61af66fc99e Initial load
duke
parents:
diff changeset
1677 *process_user_time = ((double) ticks.tms_utime) / ticks_per_second;
a61af66fc99e Initial load
duke
parents:
diff changeset
1678 *process_system_time = ((double) ticks.tms_stime) / ticks_per_second;
a61af66fc99e Initial load
duke
parents:
diff changeset
1679 // For consistency return the real time from getTimeNanos()
a61af66fc99e Initial load
duke
parents:
diff changeset
1680 // converted to seconds.
a61af66fc99e Initial load
duke
parents:
diff changeset
1681 *process_real_time = ((double) getTimeNanos()) / ((double) NANOUNITS);
a61af66fc99e Initial load
duke
parents:
diff changeset
1682
a61af66fc99e Initial load
duke
parents:
diff changeset
1683 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
1684 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1685 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1686
a61af66fc99e Initial load
duke
parents:
diff changeset
1687 // Used internally for comparisons only
a61af66fc99e Initial load
duke
parents:
diff changeset
1688 // getTimeMillis guaranteed to not move backwards on Solaris
a61af66fc99e Initial load
duke
parents:
diff changeset
1689 jlong getTimeMillis() {
a61af66fc99e Initial load
duke
parents:
diff changeset
1690 jlong nanotime = getTimeNanos();
a61af66fc99e Initial load
duke
parents:
diff changeset
1691 return (jlong)(nanotime / NANOSECS_PER_MILLISECS);
a61af66fc99e Initial load
duke
parents:
diff changeset
1692 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1693
61
5a76ab815e34 6667833: Remove CacheTimeMillis
sbohne
parents: 60
diff changeset
1694 // Must return millis since Jan 1 1970 for JVM_CurrentTimeMillis
5a76ab815e34 6667833: Remove CacheTimeMillis
sbohne
parents: 60
diff changeset
1695 jlong os::javaTimeMillis() {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1696 timeval t;
a61af66fc99e Initial load
duke
parents:
diff changeset
1697 if (gettimeofday( &t, NULL) == -1)
61
5a76ab815e34 6667833: Remove CacheTimeMillis
sbohne
parents: 60
diff changeset
1698 fatal1("os::javaTimeMillis: gettimeofday (%s)", strerror(errno));
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1699 return jlong(t.tv_sec) * 1000 + jlong(t.tv_usec) / 1000;
a61af66fc99e Initial load
duke
parents:
diff changeset
1700 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1701
a61af66fc99e Initial load
duke
parents:
diff changeset
1702 jlong os::javaTimeNanos() {
a61af66fc99e Initial load
duke
parents:
diff changeset
1703 return (jlong)getTimeNanos();
a61af66fc99e Initial load
duke
parents:
diff changeset
1704 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1705
a61af66fc99e Initial load
duke
parents:
diff changeset
1706 void os::javaTimeNanos_info(jvmtiTimerInfo *info_ptr) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1707 info_ptr->max_value = ALL_64_BITS; // gethrtime() uses all 64 bits
a61af66fc99e Initial load
duke
parents:
diff changeset
1708 info_ptr->may_skip_backward = false; // not subject to resetting or drifting
a61af66fc99e Initial load
duke
parents:
diff changeset
1709 info_ptr->may_skip_forward = false; // not subject to resetting or drifting
a61af66fc99e Initial load
duke
parents:
diff changeset
1710 info_ptr->kind = JVMTI_TIMER_ELAPSED; // elapsed not CPU time
a61af66fc99e Initial load
duke
parents:
diff changeset
1711 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1712
a61af66fc99e Initial load
duke
parents:
diff changeset
1713 char * os::local_time_string(char *buf, size_t buflen) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1714 struct tm t;
a61af66fc99e Initial load
duke
parents:
diff changeset
1715 time_t long_time;
a61af66fc99e Initial load
duke
parents:
diff changeset
1716 time(&long_time);
a61af66fc99e Initial load
duke
parents:
diff changeset
1717 localtime_r(&long_time, &t);
a61af66fc99e Initial load
duke
parents:
diff changeset
1718 jio_snprintf(buf, buflen, "%d-%02d-%02d %02d:%02d:%02d",
a61af66fc99e Initial load
duke
parents:
diff changeset
1719 t.tm_year + 1900, t.tm_mon + 1, t.tm_mday,
a61af66fc99e Initial load
duke
parents:
diff changeset
1720 t.tm_hour, t.tm_min, t.tm_sec);
a61af66fc99e Initial load
duke
parents:
diff changeset
1721 return buf;
a61af66fc99e Initial load
duke
parents:
diff changeset
1722 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1723
a61af66fc99e Initial load
duke
parents:
diff changeset
1724 // Note: os::shutdown() might be called very early during initialization, or
a61af66fc99e Initial load
duke
parents:
diff changeset
1725 // called from signal handler. Before adding something to os::shutdown(), make
a61af66fc99e Initial load
duke
parents:
diff changeset
1726 // sure it is async-safe and can handle partially initialized VM.
a61af66fc99e Initial load
duke
parents:
diff changeset
1727 void os::shutdown() {
a61af66fc99e Initial load
duke
parents:
diff changeset
1728
a61af66fc99e Initial load
duke
parents:
diff changeset
1729 // allow PerfMemory to attempt cleanup of any persistent resources
a61af66fc99e Initial load
duke
parents:
diff changeset
1730 perfMemory_exit();
a61af66fc99e Initial load
duke
parents:
diff changeset
1731
a61af66fc99e Initial load
duke
parents:
diff changeset
1732 // needs to remove object in file system
a61af66fc99e Initial load
duke
parents:
diff changeset
1733 AttachListener::abort();
a61af66fc99e Initial load
duke
parents:
diff changeset
1734
a61af66fc99e Initial load
duke
parents:
diff changeset
1735 // flush buffered output, finish log files
a61af66fc99e Initial load
duke
parents:
diff changeset
1736 ostream_abort();
a61af66fc99e Initial load
duke
parents:
diff changeset
1737
a61af66fc99e Initial load
duke
parents:
diff changeset
1738 // Check for abort hook
a61af66fc99e Initial load
duke
parents:
diff changeset
1739 abort_hook_t abort_hook = Arguments::abort_hook();
a61af66fc99e Initial load
duke
parents:
diff changeset
1740 if (abort_hook != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1741 abort_hook();
a61af66fc99e Initial load
duke
parents:
diff changeset
1742 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1743 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1744
a61af66fc99e Initial load
duke
parents:
diff changeset
1745 // Note: os::abort() might be called very early during initialization, or
a61af66fc99e Initial load
duke
parents:
diff changeset
1746 // called from signal handler. Before adding something to os::abort(), make
a61af66fc99e Initial load
duke
parents:
diff changeset
1747 // sure it is async-safe and can handle partially initialized VM.
a61af66fc99e Initial load
duke
parents:
diff changeset
1748 void os::abort(bool dump_core) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1749 os::shutdown();
a61af66fc99e Initial load
duke
parents:
diff changeset
1750 if (dump_core) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1751 #ifndef PRODUCT
a61af66fc99e Initial load
duke
parents:
diff changeset
1752 fdStream out(defaultStream::output_fd());
a61af66fc99e Initial load
duke
parents:
diff changeset
1753 out.print_raw("Current thread is ");
a61af66fc99e Initial load
duke
parents:
diff changeset
1754 char buf[16];
a61af66fc99e Initial load
duke
parents:
diff changeset
1755 jio_snprintf(buf, sizeof(buf), UINTX_FORMAT, os::current_thread_id());
a61af66fc99e Initial load
duke
parents:
diff changeset
1756 out.print_raw_cr(buf);
a61af66fc99e Initial load
duke
parents:
diff changeset
1757 out.print_raw_cr("Dumping core ...");
a61af66fc99e Initial load
duke
parents:
diff changeset
1758 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
1759 ::abort(); // dump core (for debugging)
a61af66fc99e Initial load
duke
parents:
diff changeset
1760 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1761
a61af66fc99e Initial load
duke
parents:
diff changeset
1762 ::exit(1);
a61af66fc99e Initial load
duke
parents:
diff changeset
1763 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1764
a61af66fc99e Initial load
duke
parents:
diff changeset
1765 // Die immediately, no exit hook, no abort hook, no cleanup.
a61af66fc99e Initial load
duke
parents:
diff changeset
1766 void os::die() {
a61af66fc99e Initial load
duke
parents:
diff changeset
1767 _exit(-1);
a61af66fc99e Initial load
duke
parents:
diff changeset
1768 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1769
a61af66fc99e Initial load
duke
parents:
diff changeset
1770 // unused
a61af66fc99e Initial load
duke
parents:
diff changeset
1771 void os::set_error_file(const char *logfile) {}
a61af66fc99e Initial load
duke
parents:
diff changeset
1772
a61af66fc99e Initial load
duke
parents:
diff changeset
1773 // DLL functions
a61af66fc99e Initial load
duke
parents:
diff changeset
1774
a61af66fc99e Initial load
duke
parents:
diff changeset
1775 const char* os::dll_file_extension() { return ".so"; }
a61af66fc99e Initial load
duke
parents:
diff changeset
1776
a61af66fc99e Initial load
duke
parents:
diff changeset
1777 const char* os::get_temp_directory() { return "/tmp/"; }
a61af66fc99e Initial load
duke
parents:
diff changeset
1778
a61af66fc99e Initial load
duke
parents:
diff changeset
1779 const char* os::get_current_directory(char *buf, int buflen) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1780 return getcwd(buf, buflen);
a61af66fc99e Initial load
duke
parents:
diff changeset
1781 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1782
a61af66fc99e Initial load
duke
parents:
diff changeset
1783 // check if addr is inside libjvm[_g].so
a61af66fc99e Initial load
duke
parents:
diff changeset
1784 bool os::address_is_in_vm(address addr) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1785 static address libjvm_base_addr;
a61af66fc99e Initial load
duke
parents:
diff changeset
1786 Dl_info dlinfo;
a61af66fc99e Initial load
duke
parents:
diff changeset
1787
a61af66fc99e Initial load
duke
parents:
diff changeset
1788 if (libjvm_base_addr == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1789 dladdr(CAST_FROM_FN_PTR(void *, os::address_is_in_vm), &dlinfo);
a61af66fc99e Initial load
duke
parents:
diff changeset
1790 libjvm_base_addr = (address)dlinfo.dli_fbase;
a61af66fc99e Initial load
duke
parents:
diff changeset
1791 assert(libjvm_base_addr !=NULL, "Cannot obtain base address for libjvm");
a61af66fc99e Initial load
duke
parents:
diff changeset
1792 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1793
a61af66fc99e Initial load
duke
parents:
diff changeset
1794 if (dladdr((void *)addr, &dlinfo)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1795 if (libjvm_base_addr == (address)dlinfo.dli_fbase) return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
1796 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1797
a61af66fc99e Initial load
duke
parents:
diff changeset
1798 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
1799 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1800
a61af66fc99e Initial load
duke
parents:
diff changeset
1801 typedef int (*dladdr1_func_type) (void *, Dl_info *, void **, int);
a61af66fc99e Initial load
duke
parents:
diff changeset
1802 static dladdr1_func_type dladdr1_func = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
1803
a61af66fc99e Initial load
duke
parents:
diff changeset
1804 bool os::dll_address_to_function_name(address addr, char *buf,
a61af66fc99e Initial load
duke
parents:
diff changeset
1805 int buflen, int * offset) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1806 Dl_info dlinfo;
a61af66fc99e Initial load
duke
parents:
diff changeset
1807
a61af66fc99e Initial load
duke
parents:
diff changeset
1808 // dladdr1_func was initialized in os::init()
a61af66fc99e Initial load
duke
parents:
diff changeset
1809 if (dladdr1_func){
a61af66fc99e Initial load
duke
parents:
diff changeset
1810 // yes, we have dladdr1
a61af66fc99e Initial load
duke
parents:
diff changeset
1811
a61af66fc99e Initial load
duke
parents:
diff changeset
1812 // Support for dladdr1 is checked at runtime; it may be
a61af66fc99e Initial load
duke
parents:
diff changeset
1813 // available even if the vm is built on a machine that does
a61af66fc99e Initial load
duke
parents:
diff changeset
1814 // not have dladdr1 support. Make sure there is a value for
a61af66fc99e Initial load
duke
parents:
diff changeset
1815 // RTLD_DL_SYMENT.
a61af66fc99e Initial load
duke
parents:
diff changeset
1816 #ifndef RTLD_DL_SYMENT
a61af66fc99e Initial load
duke
parents:
diff changeset
1817 #define RTLD_DL_SYMENT 1
a61af66fc99e Initial load
duke
parents:
diff changeset
1818 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
1819 Sym * info;
a61af66fc99e Initial load
duke
parents:
diff changeset
1820 if (dladdr1_func((void *)addr, &dlinfo, (void **)&info,
a61af66fc99e Initial load
duke
parents:
diff changeset
1821 RTLD_DL_SYMENT)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1822 if (buf) jio_snprintf(buf, buflen, "%s", dlinfo.dli_sname);
a61af66fc99e Initial load
duke
parents:
diff changeset
1823 if (offset) *offset = addr - (address)dlinfo.dli_saddr;
a61af66fc99e Initial load
duke
parents:
diff changeset
1824
a61af66fc99e Initial load
duke
parents:
diff changeset
1825 // check if the returned symbol really covers addr
a61af66fc99e Initial load
duke
parents:
diff changeset
1826 return ((char *)dlinfo.dli_saddr + info->st_size > (char *)addr);
a61af66fc99e Initial load
duke
parents:
diff changeset
1827 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1828 if (buf) buf[0] = '\0';
a61af66fc99e Initial load
duke
parents:
diff changeset
1829 if (offset) *offset = -1;
a61af66fc99e Initial load
duke
parents:
diff changeset
1830 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
1831 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1832 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1833 // no, only dladdr is available
a61af66fc99e Initial load
duke
parents:
diff changeset
1834 if(dladdr((void *)addr, &dlinfo)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1835 if (buf) jio_snprintf(buf, buflen, dlinfo.dli_sname);
a61af66fc99e Initial load
duke
parents:
diff changeset
1836 if (offset) *offset = addr - (address)dlinfo.dli_saddr;
a61af66fc99e Initial load
duke
parents:
diff changeset
1837 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
1838 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1839 if (buf) buf[0] = '\0';
a61af66fc99e Initial load
duke
parents:
diff changeset
1840 if (offset) *offset = -1;
a61af66fc99e Initial load
duke
parents:
diff changeset
1841 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
1842 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1843 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1844 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1845
a61af66fc99e Initial load
duke
parents:
diff changeset
1846 bool os::dll_address_to_library_name(address addr, char* buf,
a61af66fc99e Initial load
duke
parents:
diff changeset
1847 int buflen, int* offset) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1848 Dl_info dlinfo;
a61af66fc99e Initial load
duke
parents:
diff changeset
1849
a61af66fc99e Initial load
duke
parents:
diff changeset
1850 if (dladdr((void*)addr, &dlinfo)){
a61af66fc99e Initial load
duke
parents:
diff changeset
1851 if (buf) jio_snprintf(buf, buflen, "%s", dlinfo.dli_fname);
a61af66fc99e Initial load
duke
parents:
diff changeset
1852 if (offset) *offset = addr - (address)dlinfo.dli_fbase;
a61af66fc99e Initial load
duke
parents:
diff changeset
1853 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
1854 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
1855 if (buf) buf[0] = '\0';
a61af66fc99e Initial load
duke
parents:
diff changeset
1856 if (offset) *offset = -1;
a61af66fc99e Initial load
duke
parents:
diff changeset
1857 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
1858 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1859 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1860
a61af66fc99e Initial load
duke
parents:
diff changeset
1861 // Prints the names and full paths of all opened dynamic libraries
a61af66fc99e Initial load
duke
parents:
diff changeset
1862 // for current process
a61af66fc99e Initial load
duke
parents:
diff changeset
1863 void os::print_dll_info(outputStream * st) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1864 Dl_info dli;
a61af66fc99e Initial load
duke
parents:
diff changeset
1865 void *handle;
a61af66fc99e Initial load
duke
parents:
diff changeset
1866 Link_map *map;
a61af66fc99e Initial load
duke
parents:
diff changeset
1867 Link_map *p;
a61af66fc99e Initial load
duke
parents:
diff changeset
1868
a61af66fc99e Initial load
duke
parents:
diff changeset
1869 st->print_cr("Dynamic libraries:"); st->flush();
a61af66fc99e Initial load
duke
parents:
diff changeset
1870
a61af66fc99e Initial load
duke
parents:
diff changeset
1871 if (!dladdr(CAST_FROM_FN_PTR(void *, os::print_dll_info), &dli)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1872 st->print_cr("Error: Cannot print dynamic libraries.");
a61af66fc99e Initial load
duke
parents:
diff changeset
1873 return;
a61af66fc99e Initial load
duke
parents:
diff changeset
1874 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1875 handle = dlopen(dli.dli_fname, RTLD_LAZY);
a61af66fc99e Initial load
duke
parents:
diff changeset
1876 if (handle == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1877 st->print_cr("Error: Cannot print dynamic libraries.");
a61af66fc99e Initial load
duke
parents:
diff changeset
1878 return;
a61af66fc99e Initial load
duke
parents:
diff changeset
1879 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1880 dlinfo(handle, RTLD_DI_LINKMAP, &map);
a61af66fc99e Initial load
duke
parents:
diff changeset
1881 if (map == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1882 st->print_cr("Error: Cannot print dynamic libraries.");
a61af66fc99e Initial load
duke
parents:
diff changeset
1883 return;
a61af66fc99e Initial load
duke
parents:
diff changeset
1884 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1885
a61af66fc99e Initial load
duke
parents:
diff changeset
1886 while (map->l_prev != NULL)
a61af66fc99e Initial load
duke
parents:
diff changeset
1887 map = map->l_prev;
a61af66fc99e Initial load
duke
parents:
diff changeset
1888
a61af66fc99e Initial load
duke
parents:
diff changeset
1889 while (map != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1890 st->print_cr(PTR_FORMAT " \t%s", map->l_addr, map->l_name);
a61af66fc99e Initial load
duke
parents:
diff changeset
1891 map = map->l_next;
a61af66fc99e Initial load
duke
parents:
diff changeset
1892 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1893
a61af66fc99e Initial load
duke
parents:
diff changeset
1894 dlclose(handle);
a61af66fc99e Initial load
duke
parents:
diff changeset
1895 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1896
a61af66fc99e Initial load
duke
parents:
diff changeset
1897 // Loads .dll/.so and
a61af66fc99e Initial load
duke
parents:
diff changeset
1898 // in case of error it checks if .dll/.so was built for the
a61af66fc99e Initial load
duke
parents:
diff changeset
1899 // same architecture as Hotspot is running on
a61af66fc99e Initial load
duke
parents:
diff changeset
1900
a61af66fc99e Initial load
duke
parents:
diff changeset
1901 void * os::dll_load(const char *filename, char *ebuf, int ebuflen)
a61af66fc99e Initial load
duke
parents:
diff changeset
1902 {
a61af66fc99e Initial load
duke
parents:
diff changeset
1903 void * result= ::dlopen(filename, RTLD_LAZY);
a61af66fc99e Initial load
duke
parents:
diff changeset
1904 if (result != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1905 // Successful loading
a61af66fc99e Initial load
duke
parents:
diff changeset
1906 return result;
a61af66fc99e Initial load
duke
parents:
diff changeset
1907 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1908
a61af66fc99e Initial load
duke
parents:
diff changeset
1909 Elf32_Ehdr elf_head;
a61af66fc99e Initial load
duke
parents:
diff changeset
1910
a61af66fc99e Initial load
duke
parents:
diff changeset
1911 // Read system error message into ebuf
a61af66fc99e Initial load
duke
parents:
diff changeset
1912 // It may or may not be overwritten below
a61af66fc99e Initial load
duke
parents:
diff changeset
1913 ::strncpy(ebuf, ::dlerror(), ebuflen-1);
a61af66fc99e Initial load
duke
parents:
diff changeset
1914 ebuf[ebuflen-1]='\0';
a61af66fc99e Initial load
duke
parents:
diff changeset
1915 int diag_msg_max_length=ebuflen-strlen(ebuf);
a61af66fc99e Initial load
duke
parents:
diff changeset
1916 char* diag_msg_buf=ebuf+strlen(ebuf);
a61af66fc99e Initial load
duke
parents:
diff changeset
1917
a61af66fc99e Initial load
duke
parents:
diff changeset
1918 if (diag_msg_max_length==0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1919 // No more space in ebuf for additional diagnostics message
a61af66fc99e Initial load
duke
parents:
diff changeset
1920 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
1921 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1922
a61af66fc99e Initial load
duke
parents:
diff changeset
1923
a61af66fc99e Initial load
duke
parents:
diff changeset
1924 int file_descriptor= ::open(filename, O_RDONLY | O_NONBLOCK);
a61af66fc99e Initial load
duke
parents:
diff changeset
1925
a61af66fc99e Initial load
duke
parents:
diff changeset
1926 if (file_descriptor < 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1927 // Can't open library, report dlerror() message
a61af66fc99e Initial load
duke
parents:
diff changeset
1928 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
1929 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1930
a61af66fc99e Initial load
duke
parents:
diff changeset
1931 bool failed_to_read_elf_head=
a61af66fc99e Initial load
duke
parents:
diff changeset
1932 (sizeof(elf_head)!=
a61af66fc99e Initial load
duke
parents:
diff changeset
1933 (::read(file_descriptor, &elf_head,sizeof(elf_head)))) ;
a61af66fc99e Initial load
duke
parents:
diff changeset
1934
a61af66fc99e Initial load
duke
parents:
diff changeset
1935 ::close(file_descriptor);
a61af66fc99e Initial load
duke
parents:
diff changeset
1936 if (failed_to_read_elf_head) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1937 // file i/o error - report dlerror() msg
a61af66fc99e Initial load
duke
parents:
diff changeset
1938 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
1939 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1940
a61af66fc99e Initial load
duke
parents:
diff changeset
1941 typedef struct {
a61af66fc99e Initial load
duke
parents:
diff changeset
1942 Elf32_Half code; // Actual value as defined in elf.h
a61af66fc99e Initial load
duke
parents:
diff changeset
1943 Elf32_Half compat_class; // Compatibility of archs at VM's sense
a61af66fc99e Initial load
duke
parents:
diff changeset
1944 char elf_class; // 32 or 64 bit
a61af66fc99e Initial load
duke
parents:
diff changeset
1945 char endianess; // MSB or LSB
a61af66fc99e Initial load
duke
parents:
diff changeset
1946 char* name; // String representation
a61af66fc99e Initial load
duke
parents:
diff changeset
1947 } arch_t;
a61af66fc99e Initial load
duke
parents:
diff changeset
1948
a61af66fc99e Initial load
duke
parents:
diff changeset
1949 static const arch_t arch_array[]={
a61af66fc99e Initial load
duke
parents:
diff changeset
1950 {EM_386, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"},
a61af66fc99e Initial load
duke
parents:
diff changeset
1951 {EM_486, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"},
a61af66fc99e Initial load
duke
parents:
diff changeset
1952 {EM_IA_64, EM_IA_64, ELFCLASS64, ELFDATA2LSB, (char*)"IA 64"},
a61af66fc99e Initial load
duke
parents:
diff changeset
1953 {EM_X86_64, EM_X86_64, ELFCLASS64, ELFDATA2LSB, (char*)"AMD 64"},
a61af66fc99e Initial load
duke
parents:
diff changeset
1954 {EM_SPARC, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"},
a61af66fc99e Initial load
duke
parents:
diff changeset
1955 {EM_SPARC32PLUS, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"},
a61af66fc99e Initial load
duke
parents:
diff changeset
1956 {EM_SPARCV9, EM_SPARCV9, ELFCLASS64, ELFDATA2MSB, (char*)"Sparc v9 64"},
a61af66fc99e Initial load
duke
parents:
diff changeset
1957 {EM_PPC, EM_PPC, ELFCLASS32, ELFDATA2MSB, (char*)"Power PC 32"},
a61af66fc99e Initial load
duke
parents:
diff changeset
1958 {EM_PPC64, EM_PPC64, ELFCLASS64, ELFDATA2MSB, (char*)"Power PC 64"}
a61af66fc99e Initial load
duke
parents:
diff changeset
1959 };
a61af66fc99e Initial load
duke
parents:
diff changeset
1960
a61af66fc99e Initial load
duke
parents:
diff changeset
1961 #if (defined IA32)
a61af66fc99e Initial load
duke
parents:
diff changeset
1962 static Elf32_Half running_arch_code=EM_386;
a61af66fc99e Initial load
duke
parents:
diff changeset
1963 #elif (defined AMD64)
a61af66fc99e Initial load
duke
parents:
diff changeset
1964 static Elf32_Half running_arch_code=EM_X86_64;
a61af66fc99e Initial load
duke
parents:
diff changeset
1965 #elif (defined IA64)
a61af66fc99e Initial load
duke
parents:
diff changeset
1966 static Elf32_Half running_arch_code=EM_IA_64;
a61af66fc99e Initial load
duke
parents:
diff changeset
1967 #elif (defined __sparc) && (defined _LP64)
a61af66fc99e Initial load
duke
parents:
diff changeset
1968 static Elf32_Half running_arch_code=EM_SPARCV9;
a61af66fc99e Initial load
duke
parents:
diff changeset
1969 #elif (defined __sparc) && (!defined _LP64)
a61af66fc99e Initial load
duke
parents:
diff changeset
1970 static Elf32_Half running_arch_code=EM_SPARC;
a61af66fc99e Initial load
duke
parents:
diff changeset
1971 #elif (defined __powerpc64__)
a61af66fc99e Initial load
duke
parents:
diff changeset
1972 static Elf32_Half running_arch_code=EM_PPC64;
a61af66fc99e Initial load
duke
parents:
diff changeset
1973 #elif (defined __powerpc__)
a61af66fc99e Initial load
duke
parents:
diff changeset
1974 static Elf32_Half running_arch_code=EM_PPC;
a61af66fc99e Initial load
duke
parents:
diff changeset
1975 #else
a61af66fc99e Initial load
duke
parents:
diff changeset
1976 #error Method os::dll_load requires that one of following is defined:\
a61af66fc99e Initial load
duke
parents:
diff changeset
1977 IA32, AMD64, IA64, __sparc, __powerpc__
a61af66fc99e Initial load
duke
parents:
diff changeset
1978 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
1979
a61af66fc99e Initial load
duke
parents:
diff changeset
1980 // Identify compatability class for VM's architecture and library's architecture
a61af66fc99e Initial load
duke
parents:
diff changeset
1981 // Obtain string descriptions for architectures
a61af66fc99e Initial load
duke
parents:
diff changeset
1982
a61af66fc99e Initial load
duke
parents:
diff changeset
1983 arch_t lib_arch={elf_head.e_machine,0,elf_head.e_ident[EI_CLASS], elf_head.e_ident[EI_DATA], NULL};
a61af66fc99e Initial load
duke
parents:
diff changeset
1984 int running_arch_index=-1;
a61af66fc99e Initial load
duke
parents:
diff changeset
1985
a61af66fc99e Initial load
duke
parents:
diff changeset
1986 for (unsigned int i=0 ; i < ARRAY_SIZE(arch_array) ; i++ ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1987 if (running_arch_code == arch_array[i].code) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1988 running_arch_index = i;
a61af66fc99e Initial load
duke
parents:
diff changeset
1989 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1990 if (lib_arch.code == arch_array[i].code) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1991 lib_arch.compat_class = arch_array[i].compat_class;
a61af66fc99e Initial load
duke
parents:
diff changeset
1992 lib_arch.name = arch_array[i].name;
a61af66fc99e Initial load
duke
parents:
diff changeset
1993 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1994 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1995
a61af66fc99e Initial load
duke
parents:
diff changeset
1996 assert(running_arch_index != -1,
a61af66fc99e Initial load
duke
parents:
diff changeset
1997 "Didn't find running architecture code (running_arch_code) in arch_array");
a61af66fc99e Initial load
duke
parents:
diff changeset
1998 if (running_arch_index == -1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
1999 // Even though running architecture detection failed
a61af66fc99e Initial load
duke
parents:
diff changeset
2000 // we may still continue with reporting dlerror() message
a61af66fc99e Initial load
duke
parents:
diff changeset
2001 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
2002 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2003
a61af66fc99e Initial load
duke
parents:
diff changeset
2004 if (lib_arch.endianess != arch_array[running_arch_index].endianess) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2005 ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: endianness mismatch)");
a61af66fc99e Initial load
duke
parents:
diff changeset
2006 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
2007 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2008
a61af66fc99e Initial load
duke
parents:
diff changeset
2009 if (lib_arch.elf_class != arch_array[running_arch_index].elf_class) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2010 ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: architecture word width mismatch)");
a61af66fc99e Initial load
duke
parents:
diff changeset
2011 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
2012 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2013
a61af66fc99e Initial load
duke
parents:
diff changeset
2014 if (lib_arch.compat_class != arch_array[running_arch_index].compat_class) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2015 if ( lib_arch.name!=NULL ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2016 ::snprintf(diag_msg_buf, diag_msg_max_length-1,
a61af66fc99e Initial load
duke
parents:
diff changeset
2017 " (Possible cause: can't load %s-bit .so on a %s-bit platform)",
a61af66fc99e Initial load
duke
parents:
diff changeset
2018 lib_arch.name, arch_array[running_arch_index].name);
a61af66fc99e Initial load
duke
parents:
diff changeset
2019 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
2020 ::snprintf(diag_msg_buf, diag_msg_max_length-1,
a61af66fc99e Initial load
duke
parents:
diff changeset
2021 " (Possible cause: can't load this .so (machine code=0x%x) on a %s-bit platform)",
a61af66fc99e Initial load
duke
parents:
diff changeset
2022 lib_arch.code,
a61af66fc99e Initial load
duke
parents:
diff changeset
2023 arch_array[running_arch_index].name);
a61af66fc99e Initial load
duke
parents:
diff changeset
2024 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2025 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2026
a61af66fc99e Initial load
duke
parents:
diff changeset
2027 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
2028 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2029
a61af66fc99e Initial load
duke
parents:
diff changeset
2030
a61af66fc99e Initial load
duke
parents:
diff changeset
2031
a61af66fc99e Initial load
duke
parents:
diff changeset
2032 bool _print_ascii_file(const char* filename, outputStream* st) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2033 int fd = open(filename, O_RDONLY);
a61af66fc99e Initial load
duke
parents:
diff changeset
2034 if (fd == -1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2035 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
2036 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2037
a61af66fc99e Initial load
duke
parents:
diff changeset
2038 char buf[32];
a61af66fc99e Initial load
duke
parents:
diff changeset
2039 int bytes;
a61af66fc99e Initial load
duke
parents:
diff changeset
2040 while ((bytes = read(fd, buf, sizeof(buf))) > 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2041 st->print_raw(buf, bytes);
a61af66fc99e Initial load
duke
parents:
diff changeset
2042 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2043
a61af66fc99e Initial load
duke
parents:
diff changeset
2044 close(fd);
a61af66fc99e Initial load
duke
parents:
diff changeset
2045
a61af66fc99e Initial load
duke
parents:
diff changeset
2046 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
2047 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2048
a61af66fc99e Initial load
duke
parents:
diff changeset
2049 void os::print_os_info(outputStream* st) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2050 st->print("OS:");
a61af66fc99e Initial load
duke
parents:
diff changeset
2051
a61af66fc99e Initial load
duke
parents:
diff changeset
2052 if (!_print_ascii_file("/etc/release", st)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2053 st->print("Solaris");
a61af66fc99e Initial load
duke
parents:
diff changeset
2054 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2055 st->cr();
a61af66fc99e Initial load
duke
parents:
diff changeset
2056
a61af66fc99e Initial load
duke
parents:
diff changeset
2057 // kernel
a61af66fc99e Initial load
duke
parents:
diff changeset
2058 st->print("uname:");
a61af66fc99e Initial load
duke
parents:
diff changeset
2059 struct utsname name;
a61af66fc99e Initial load
duke
parents:
diff changeset
2060 uname(&name);
a61af66fc99e Initial load
duke
parents:
diff changeset
2061 st->print(name.sysname); st->print(" ");
a61af66fc99e Initial load
duke
parents:
diff changeset
2062 st->print(name.release); st->print(" ");
a61af66fc99e Initial load
duke
parents:
diff changeset
2063 st->print(name.version); st->print(" ");
a61af66fc99e Initial load
duke
parents:
diff changeset
2064 st->print(name.machine);
a61af66fc99e Initial load
duke
parents:
diff changeset
2065
a61af66fc99e Initial load
duke
parents:
diff changeset
2066 // libthread
a61af66fc99e Initial load
duke
parents:
diff changeset
2067 if (os::Solaris::T2_libthread()) st->print(" (T2 libthread)");
a61af66fc99e Initial load
duke
parents:
diff changeset
2068 else st->print(" (T1 libthread)");
a61af66fc99e Initial load
duke
parents:
diff changeset
2069 st->cr();
a61af66fc99e Initial load
duke
parents:
diff changeset
2070
a61af66fc99e Initial load
duke
parents:
diff changeset
2071 // rlimit
a61af66fc99e Initial load
duke
parents:
diff changeset
2072 st->print("rlimit:");
a61af66fc99e Initial load
duke
parents:
diff changeset
2073 struct rlimit rlim;
a61af66fc99e Initial load
duke
parents:
diff changeset
2074
a61af66fc99e Initial load
duke
parents:
diff changeset
2075 st->print(" STACK ");
a61af66fc99e Initial load
duke
parents:
diff changeset
2076 getrlimit(RLIMIT_STACK, &rlim);
a61af66fc99e Initial load
duke
parents:
diff changeset
2077 if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
a61af66fc99e Initial load
duke
parents:
diff changeset
2078 else st->print("%uk", rlim.rlim_cur >> 10);
a61af66fc99e Initial load
duke
parents:
diff changeset
2079
a61af66fc99e Initial load
duke
parents:
diff changeset
2080 st->print(", CORE ");
a61af66fc99e Initial load
duke
parents:
diff changeset
2081 getrlimit(RLIMIT_CORE, &rlim);
a61af66fc99e Initial load
duke
parents:
diff changeset
2082 if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
a61af66fc99e Initial load
duke
parents:
diff changeset
2083 else st->print("%uk", rlim.rlim_cur >> 10);
a61af66fc99e Initial load
duke
parents:
diff changeset
2084
a61af66fc99e Initial load
duke
parents:
diff changeset
2085 st->print(", NOFILE ");
a61af66fc99e Initial load
duke
parents:
diff changeset
2086 getrlimit(RLIMIT_NOFILE, &rlim);
a61af66fc99e Initial load
duke
parents:
diff changeset
2087 if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
a61af66fc99e Initial load
duke
parents:
diff changeset
2088 else st->print("%d", rlim.rlim_cur);
a61af66fc99e Initial load
duke
parents:
diff changeset
2089
a61af66fc99e Initial load
duke
parents:
diff changeset
2090 st->print(", AS ");
a61af66fc99e Initial load
duke
parents:
diff changeset
2091 getrlimit(RLIMIT_AS, &rlim);
a61af66fc99e Initial load
duke
parents:
diff changeset
2092 if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
a61af66fc99e Initial load
duke
parents:
diff changeset
2093 else st->print("%uk", rlim.rlim_cur >> 10);
a61af66fc99e Initial load
duke
parents:
diff changeset
2094 st->cr();
a61af66fc99e Initial load
duke
parents:
diff changeset
2095
a61af66fc99e Initial load
duke
parents:
diff changeset
2096 // load average
a61af66fc99e Initial load
duke
parents:
diff changeset
2097 st->print("load average:");
a61af66fc99e Initial load
duke
parents:
diff changeset
2098 double loadavg[3];
a61af66fc99e Initial load
duke
parents:
diff changeset
2099 os::loadavg(loadavg, 3);
a61af66fc99e Initial load
duke
parents:
diff changeset
2100 st->print("%0.02f %0.02f %0.02f", loadavg[0], loadavg[1], loadavg[2]);
a61af66fc99e Initial load
duke
parents:
diff changeset
2101 st->cr();
a61af66fc99e Initial load
duke
parents:
diff changeset
2102 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2103
a61af66fc99e Initial load
duke
parents:
diff changeset
2104
a61af66fc99e Initial load
duke
parents:
diff changeset
2105 static bool check_addr0(outputStream* st) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2106 jboolean status = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
2107 int fd = open("/proc/self/map",O_RDONLY);
a61af66fc99e Initial load
duke
parents:
diff changeset
2108 if (fd >= 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2109 prmap_t p;
a61af66fc99e Initial load
duke
parents:
diff changeset
2110 while(read(fd, &p, sizeof(p)) > 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2111 if (p.pr_vaddr == 0x0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2112 st->print("Warning: Address: 0x%x, Size: %dK, ",p.pr_vaddr, p.pr_size/1024, p.pr_mapname);
a61af66fc99e Initial load
duke
parents:
diff changeset
2113 st->print("Mapped file: %s, ", p.pr_mapname[0] == '\0' ? "None" : p.pr_mapname);
a61af66fc99e Initial load
duke
parents:
diff changeset
2114 st->print("Access:");
a61af66fc99e Initial load
duke
parents:
diff changeset
2115 st->print("%s",(p.pr_mflags & MA_READ) ? "r" : "-");
a61af66fc99e Initial load
duke
parents:
diff changeset
2116 st->print("%s",(p.pr_mflags & MA_WRITE) ? "w" : "-");
a61af66fc99e Initial load
duke
parents:
diff changeset
2117 st->print("%s",(p.pr_mflags & MA_EXEC) ? "x" : "-");
a61af66fc99e Initial load
duke
parents:
diff changeset
2118 st->cr();
a61af66fc99e Initial load
duke
parents:
diff changeset
2119 status = true;
a61af66fc99e Initial load
duke
parents:
diff changeset
2120 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2121 close(fd);
a61af66fc99e Initial load
duke
parents:
diff changeset
2122 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2123 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2124 return status;
a61af66fc99e Initial load
duke
parents:
diff changeset
2125 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2126
a61af66fc99e Initial load
duke
parents:
diff changeset
2127 void os::print_memory_info(outputStream* st) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2128 st->print("Memory:");
a61af66fc99e Initial load
duke
parents:
diff changeset
2129 st->print(" %dk page", os::vm_page_size()>>10);
a61af66fc99e Initial load
duke
parents:
diff changeset
2130 st->print(", physical " UINT64_FORMAT "k", os::physical_memory()>>10);
a61af66fc99e Initial load
duke
parents:
diff changeset
2131 st->print("(" UINT64_FORMAT "k free)", os::available_memory() >> 10);
a61af66fc99e Initial load
duke
parents:
diff changeset
2132 st->cr();
a61af66fc99e Initial load
duke
parents:
diff changeset
2133 (void) check_addr0(st);
a61af66fc99e Initial load
duke
parents:
diff changeset
2134 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2135
a61af66fc99e Initial load
duke
parents:
diff changeset
2136 // Taken from /usr/include/sys/machsig.h Supposed to be architecture specific
a61af66fc99e Initial load
duke
parents:
diff changeset
2137 // but they're the same for all the solaris architectures that we support.
a61af66fc99e Initial load
duke
parents:
diff changeset
2138 const char *ill_names[] = { "ILL0", "ILL_ILLOPC", "ILL_ILLOPN", "ILL_ILLADR",
a61af66fc99e Initial load
duke
parents:
diff changeset
2139 "ILL_ILLTRP", "ILL_PRVOPC", "ILL_PRVREG",
a61af66fc99e Initial load
duke
parents:
diff changeset
2140 "ILL_COPROC", "ILL_BADSTK" };
a61af66fc99e Initial load
duke
parents:
diff changeset
2141
a61af66fc99e Initial load
duke
parents:
diff changeset
2142 const char *fpe_names[] = { "FPE0", "FPE_INTDIV", "FPE_INTOVF", "FPE_FLTDIV",
a61af66fc99e Initial load
duke
parents:
diff changeset
2143 "FPE_FLTOVF", "FPE_FLTUND", "FPE_FLTRES",
a61af66fc99e Initial load
duke
parents:
diff changeset
2144 "FPE_FLTINV", "FPE_FLTSUB" };
a61af66fc99e Initial load
duke
parents:
diff changeset
2145
a61af66fc99e Initial load
duke
parents:
diff changeset
2146 const char *segv_names[] = { "SEGV0", "SEGV_MAPERR", "SEGV_ACCERR" };
a61af66fc99e Initial load
duke
parents:
diff changeset
2147
a61af66fc99e Initial load
duke
parents:
diff changeset
2148 const char *bus_names[] = { "BUS0", "BUS_ADRALN", "BUS_ADRERR", "BUS_OBJERR" };
a61af66fc99e Initial load
duke
parents:
diff changeset
2149
a61af66fc99e Initial load
duke
parents:
diff changeset
2150 void os::print_siginfo(outputStream* st, void* siginfo) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2151 st->print("siginfo:");
a61af66fc99e Initial load
duke
parents:
diff changeset
2152
a61af66fc99e Initial load
duke
parents:
diff changeset
2153 const int buflen = 100;
a61af66fc99e Initial load
duke
parents:
diff changeset
2154 char buf[buflen];
a61af66fc99e Initial load
duke
parents:
diff changeset
2155 siginfo_t *si = (siginfo_t*)siginfo;
a61af66fc99e Initial load
duke
parents:
diff changeset
2156 st->print("si_signo=%s: ", os::exception_name(si->si_signo, buf, buflen));
a61af66fc99e Initial load
duke
parents:
diff changeset
2157 char *err = strerror(si->si_errno);
a61af66fc99e Initial load
duke
parents:
diff changeset
2158 if (si->si_errno != 0 && err != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2159 st->print("si_errno=%s", err);
a61af66fc99e Initial load
duke
parents:
diff changeset
2160 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
2161 st->print("si_errno=%d", si->si_errno);
a61af66fc99e Initial load
duke
parents:
diff changeset
2162 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2163 const int c = si->si_code;
a61af66fc99e Initial load
duke
parents:
diff changeset
2164 assert(c > 0, "unexpected si_code");
a61af66fc99e Initial load
duke
parents:
diff changeset
2165 switch (si->si_signo) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2166 case SIGILL:
a61af66fc99e Initial load
duke
parents:
diff changeset
2167 st->print(", si_code=%d (%s)", c, c > 8 ? "" : ill_names[c]);
a61af66fc99e Initial load
duke
parents:
diff changeset
2168 st->print(", si_addr=" PTR_FORMAT, si->si_addr);
a61af66fc99e Initial load
duke
parents:
diff changeset
2169 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
2170 case SIGFPE:
a61af66fc99e Initial load
duke
parents:
diff changeset
2171 st->print(", si_code=%d (%s)", c, c > 9 ? "" : fpe_names[c]);
a61af66fc99e Initial load
duke
parents:
diff changeset
2172 st->print(", si_addr=" PTR_FORMAT, si->si_addr);
a61af66fc99e Initial load
duke
parents:
diff changeset
2173 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
2174 case SIGSEGV:
a61af66fc99e Initial load
duke
parents:
diff changeset
2175 st->print(", si_code=%d (%s)", c, c > 2 ? "" : segv_names[c]);
a61af66fc99e Initial load
duke
parents:
diff changeset
2176 st->print(", si_addr=" PTR_FORMAT, si->si_addr);
a61af66fc99e Initial load
duke
parents:
diff changeset
2177 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
2178 case SIGBUS:
a61af66fc99e Initial load
duke
parents:
diff changeset
2179 st->print(", si_code=%d (%s)", c, c > 3 ? "" : bus_names[c]);
a61af66fc99e Initial load
duke
parents:
diff changeset
2180 st->print(", si_addr=" PTR_FORMAT, si->si_addr);
a61af66fc99e Initial load
duke
parents:
diff changeset
2181 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
2182 default:
a61af66fc99e Initial load
duke
parents:
diff changeset
2183 st->print(", si_code=%d", si->si_code);
a61af66fc99e Initial load
duke
parents:
diff changeset
2184 // no si_addr
a61af66fc99e Initial load
duke
parents:
diff changeset
2185 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2186
a61af66fc99e Initial load
duke
parents:
diff changeset
2187 if ((si->si_signo == SIGBUS || si->si_signo == SIGSEGV) &&
a61af66fc99e Initial load
duke
parents:
diff changeset
2188 UseSharedSpaces) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2189 FileMapInfo* mapinfo = FileMapInfo::current_info();
a61af66fc99e Initial load
duke
parents:
diff changeset
2190 if (mapinfo->is_in_shared_space(si->si_addr)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2191 st->print("\n\nError accessing class data sharing archive." \
a61af66fc99e Initial load
duke
parents:
diff changeset
2192 " Mapped file inaccessible during execution, " \
a61af66fc99e Initial load
duke
parents:
diff changeset
2193 " possible disk/network problem.");
a61af66fc99e Initial load
duke
parents:
diff changeset
2194 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2195 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2196 st->cr();
a61af66fc99e Initial load
duke
parents:
diff changeset
2197 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2198
a61af66fc99e Initial load
duke
parents:
diff changeset
2199 // Moved from whole group, because we need them here for diagnostic
a61af66fc99e Initial load
duke
parents:
diff changeset
2200 // prints.
a61af66fc99e Initial load
duke
parents:
diff changeset
2201 #define OLDMAXSIGNUM 32
a61af66fc99e Initial load
duke
parents:
diff changeset
2202 static int Maxsignum = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
2203 static int *ourSigFlags = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
2204
a61af66fc99e Initial load
duke
parents:
diff changeset
2205 extern "C" void sigINTRHandler(int, siginfo_t*, void*);
a61af66fc99e Initial load
duke
parents:
diff changeset
2206
a61af66fc99e Initial load
duke
parents:
diff changeset
2207 int os::Solaris::get_our_sigflags(int sig) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2208 assert(ourSigFlags!=NULL, "signal data structure not initialized");
a61af66fc99e Initial load
duke
parents:
diff changeset
2209 assert(sig > 0 && sig < Maxsignum, "vm signal out of expected range");
a61af66fc99e Initial load
duke
parents:
diff changeset
2210 return ourSigFlags[sig];
a61af66fc99e Initial load
duke
parents:
diff changeset
2211 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2212
a61af66fc99e Initial load
duke
parents:
diff changeset
2213 void os::Solaris::set_our_sigflags(int sig, int flags) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2214 assert(ourSigFlags!=NULL, "signal data structure not initialized");
a61af66fc99e Initial load
duke
parents:
diff changeset
2215 assert(sig > 0 && sig < Maxsignum, "vm signal out of expected range");
a61af66fc99e Initial load
duke
parents:
diff changeset
2216 ourSigFlags[sig] = flags;
a61af66fc99e Initial load
duke
parents:
diff changeset
2217 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2218
a61af66fc99e Initial load
duke
parents:
diff changeset
2219
a61af66fc99e Initial load
duke
parents:
diff changeset
2220 static const char* get_signal_handler_name(address handler,
a61af66fc99e Initial load
duke
parents:
diff changeset
2221 char* buf, int buflen) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2222 int offset;
a61af66fc99e Initial load
duke
parents:
diff changeset
2223 bool found = os::dll_address_to_library_name(handler, buf, buflen, &offset);
a61af66fc99e Initial load
duke
parents:
diff changeset
2224 if (found) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2225 // skip directory names
a61af66fc99e Initial load
duke
parents:
diff changeset
2226 const char *p1, *p2;
a61af66fc99e Initial load
duke
parents:
diff changeset
2227 p1 = buf;
a61af66fc99e Initial load
duke
parents:
diff changeset
2228 size_t len = strlen(os::file_separator());
a61af66fc99e Initial load
duke
parents:
diff changeset
2229 while ((p2 = strstr(p1, os::file_separator())) != NULL) p1 = p2 + len;
a61af66fc99e Initial load
duke
parents:
diff changeset
2230 jio_snprintf(buf, buflen, "%s+0x%x", p1, offset);
a61af66fc99e Initial load
duke
parents:
diff changeset
2231 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
2232 jio_snprintf(buf, buflen, PTR_FORMAT, handler);
a61af66fc99e Initial load
duke
parents:
diff changeset
2233 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2234 return buf;
a61af66fc99e Initial load
duke
parents:
diff changeset
2235 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2236
a61af66fc99e Initial load
duke
parents:
diff changeset
2237 static void print_signal_handler(outputStream* st, int sig,
a61af66fc99e Initial load
duke
parents:
diff changeset
2238 char* buf, size_t buflen) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2239 struct sigaction sa;
a61af66fc99e Initial load
duke
parents:
diff changeset
2240
a61af66fc99e Initial load
duke
parents:
diff changeset
2241 sigaction(sig, NULL, &sa);
a61af66fc99e Initial load
duke
parents:
diff changeset
2242
a61af66fc99e Initial load
duke
parents:
diff changeset
2243 st->print("%s: ", os::exception_name(sig, buf, buflen));
a61af66fc99e Initial load
duke
parents:
diff changeset
2244
a61af66fc99e Initial load
duke
parents:
diff changeset
2245 address handler = (sa.sa_flags & SA_SIGINFO)
a61af66fc99e Initial load
duke
parents:
diff changeset
2246 ? CAST_FROM_FN_PTR(address, sa.sa_sigaction)
a61af66fc99e Initial load
duke
parents:
diff changeset
2247 : CAST_FROM_FN_PTR(address, sa.sa_handler);
a61af66fc99e Initial load
duke
parents:
diff changeset
2248
a61af66fc99e Initial load
duke
parents:
diff changeset
2249 if (handler == CAST_FROM_FN_PTR(address, SIG_DFL)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2250 st->print("SIG_DFL");
a61af66fc99e Initial load
duke
parents:
diff changeset
2251 } else if (handler == CAST_FROM_FN_PTR(address, SIG_IGN)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2252 st->print("SIG_IGN");
a61af66fc99e Initial load
duke
parents:
diff changeset
2253 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
2254 st->print("[%s]", get_signal_handler_name(handler, buf, buflen));
a61af66fc99e Initial load
duke
parents:
diff changeset
2255 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2256
a61af66fc99e Initial load
duke
parents:
diff changeset
2257 st->print(", sa_mask[0]=" PTR32_FORMAT, *(uint32_t*)&sa.sa_mask);
a61af66fc99e Initial load
duke
parents:
diff changeset
2258
a61af66fc99e Initial load
duke
parents:
diff changeset
2259 address rh = VMError::get_resetted_sighandler(sig);
a61af66fc99e Initial load
duke
parents:
diff changeset
2260 // May be, handler was resetted by VMError?
a61af66fc99e Initial load
duke
parents:
diff changeset
2261 if(rh != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2262 handler = rh;
a61af66fc99e Initial load
duke
parents:
diff changeset
2263 sa.sa_flags = VMError::get_resetted_sigflags(sig);
a61af66fc99e Initial load
duke
parents:
diff changeset
2264 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2265
a61af66fc99e Initial load
duke
parents:
diff changeset
2266 st->print(", sa_flags=" PTR32_FORMAT, sa.sa_flags);
a61af66fc99e Initial load
duke
parents:
diff changeset
2267
a61af66fc99e Initial load
duke
parents:
diff changeset
2268 // Check: is it our handler?
a61af66fc99e Initial load
duke
parents:
diff changeset
2269 if(handler == CAST_FROM_FN_PTR(address, signalHandler) ||
a61af66fc99e Initial load
duke
parents:
diff changeset
2270 handler == CAST_FROM_FN_PTR(address, sigINTRHandler)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2271 // It is our signal handler
a61af66fc99e Initial load
duke
parents:
diff changeset
2272 // check for flags
a61af66fc99e Initial load
duke
parents:
diff changeset
2273 if(sa.sa_flags != os::Solaris::get_our_sigflags(sig)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2274 st->print(
a61af66fc99e Initial load
duke
parents:
diff changeset
2275 ", flags was changed from " PTR32_FORMAT ", consider using jsig library",
a61af66fc99e Initial load
duke
parents:
diff changeset
2276 os::Solaris::get_our_sigflags(sig));
a61af66fc99e Initial load
duke
parents:
diff changeset
2277 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2278 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2279 st->cr();
a61af66fc99e Initial load
duke
parents:
diff changeset
2280 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2281
a61af66fc99e Initial load
duke
parents:
diff changeset
2282 void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2283 st->print_cr("Signal Handlers:");
a61af66fc99e Initial load
duke
parents:
diff changeset
2284 print_signal_handler(st, SIGSEGV, buf, buflen);
a61af66fc99e Initial load
duke
parents:
diff changeset
2285 print_signal_handler(st, SIGBUS , buf, buflen);
a61af66fc99e Initial load
duke
parents:
diff changeset
2286 print_signal_handler(st, SIGFPE , buf, buflen);
a61af66fc99e Initial load
duke
parents:
diff changeset
2287 print_signal_handler(st, SIGPIPE, buf, buflen);
a61af66fc99e Initial load
duke
parents:
diff changeset
2288 print_signal_handler(st, SIGXFSZ, buf, buflen);
a61af66fc99e Initial load
duke
parents:
diff changeset
2289 print_signal_handler(st, SIGILL , buf, buflen);
a61af66fc99e Initial load
duke
parents:
diff changeset
2290 print_signal_handler(st, INTERRUPT_SIGNAL, buf, buflen);
a61af66fc99e Initial load
duke
parents:
diff changeset
2291 print_signal_handler(st, ASYNC_SIGNAL, buf, buflen);
a61af66fc99e Initial load
duke
parents:
diff changeset
2292 print_signal_handler(st, BREAK_SIGNAL, buf, buflen);
a61af66fc99e Initial load
duke
parents:
diff changeset
2293 print_signal_handler(st, SHUTDOWN1_SIGNAL , buf, buflen);
a61af66fc99e Initial load
duke
parents:
diff changeset
2294 print_signal_handler(st, SHUTDOWN2_SIGNAL , buf, buflen);
a61af66fc99e Initial load
duke
parents:
diff changeset
2295 print_signal_handler(st, SHUTDOWN3_SIGNAL, buf, buflen);
a61af66fc99e Initial load
duke
parents:
diff changeset
2296 print_signal_handler(st, os::Solaris::SIGinterrupt(), buf, buflen);
a61af66fc99e Initial load
duke
parents:
diff changeset
2297 print_signal_handler(st, os::Solaris::SIGasync(), buf, buflen);
a61af66fc99e Initial load
duke
parents:
diff changeset
2298 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2299
a61af66fc99e Initial load
duke
parents:
diff changeset
2300 static char saved_jvm_path[MAXPATHLEN] = { 0 };
a61af66fc99e Initial load
duke
parents:
diff changeset
2301
a61af66fc99e Initial load
duke
parents:
diff changeset
2302 // Find the full path to the current module, libjvm.so or libjvm_g.so
a61af66fc99e Initial load
duke
parents:
diff changeset
2303 void os::jvm_path(char *buf, jint buflen) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2304 // Error checking.
a61af66fc99e Initial load
duke
parents:
diff changeset
2305 if (buflen < MAXPATHLEN) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2306 assert(false, "must use a large-enough buffer");
a61af66fc99e Initial load
duke
parents:
diff changeset
2307 buf[0] = '\0';
a61af66fc99e Initial load
duke
parents:
diff changeset
2308 return;
a61af66fc99e Initial load
duke
parents:
diff changeset
2309 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2310 // Lazy resolve the path to current module.
a61af66fc99e Initial load
duke
parents:
diff changeset
2311 if (saved_jvm_path[0] != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2312 strcpy(buf, saved_jvm_path);
a61af66fc99e Initial load
duke
parents:
diff changeset
2313 return;
a61af66fc99e Initial load
duke
parents:
diff changeset
2314 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2315
a61af66fc99e Initial load
duke
parents:
diff changeset
2316 Dl_info dlinfo;
a61af66fc99e Initial load
duke
parents:
diff changeset
2317 int ret = dladdr(CAST_FROM_FN_PTR(void *, os::jvm_path), &dlinfo);
a61af66fc99e Initial load
duke
parents:
diff changeset
2318 assert(ret != 0, "cannot locate libjvm");
a61af66fc99e Initial load
duke
parents:
diff changeset
2319 realpath((char *)dlinfo.dli_fname, buf);
a61af66fc99e Initial load
duke
parents:
diff changeset
2320
a61af66fc99e Initial load
duke
parents:
diff changeset
2321 if (strcmp(Arguments::sun_java_launcher(), "gamma") == 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2322 // Support for the gamma launcher. Typical value for buf is
a61af66fc99e Initial load
duke
parents:
diff changeset
2323 // "<JAVA_HOME>/jre/lib/<arch>/<vmtype>/libjvm.so". If "/jre/lib/" appears at
a61af66fc99e Initial load
duke
parents:
diff changeset
2324 // the right place in the string, then assume we are installed in a JDK and
a61af66fc99e Initial load
duke
parents:
diff changeset
2325 // we're done. Otherwise, check for a JAVA_HOME environment variable and fix
a61af66fc99e Initial load
duke
parents:
diff changeset
2326 // up the path so it looks like libjvm.so is installed there (append a
a61af66fc99e Initial load
duke
parents:
diff changeset
2327 // fake suffix hotspot/libjvm.so).
a61af66fc99e Initial load
duke
parents:
diff changeset
2328 const char *p = buf + strlen(buf) - 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
2329 for (int count = 0; p > buf && count < 5; ++count) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2330 for (--p; p > buf && *p != '/'; --p)
a61af66fc99e Initial load
duke
parents:
diff changeset
2331 /* empty */ ;
a61af66fc99e Initial load
duke
parents:
diff changeset
2332 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2333
a61af66fc99e Initial load
duke
parents:
diff changeset
2334 if (strncmp(p, "/jre/lib/", 9) != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2335 // Look for JAVA_HOME in the environment.
a61af66fc99e Initial load
duke
parents:
diff changeset
2336 char* java_home_var = ::getenv("JAVA_HOME");
a61af66fc99e Initial load
duke
parents:
diff changeset
2337 if (java_home_var != NULL && java_home_var[0] != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2338 char cpu_arch[12];
a61af66fc99e Initial load
duke
parents:
diff changeset
2339 sysinfo(SI_ARCHITECTURE, cpu_arch, sizeof(cpu_arch));
a61af66fc99e Initial load
duke
parents:
diff changeset
2340 #ifdef _LP64
a61af66fc99e Initial load
duke
parents:
diff changeset
2341 // If we are on sparc running a 64-bit vm, look in jre/lib/sparcv9.
a61af66fc99e Initial load
duke
parents:
diff changeset
2342 if (strcmp(cpu_arch, "sparc") == 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2343 strcat(cpu_arch, "v9");
a61af66fc99e Initial load
duke
parents:
diff changeset
2344 } else if (strcmp(cpu_arch, "i386") == 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2345 strcpy(cpu_arch, "amd64");
a61af66fc99e Initial load
duke
parents:
diff changeset
2346 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2347 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
2348 // Check the current module name "libjvm.so" or "libjvm_g.so".
a61af66fc99e Initial load
duke
parents:
diff changeset
2349 p = strrchr(buf, '/');
a61af66fc99e Initial load
duke
parents:
diff changeset
2350 assert(strstr(p, "/libjvm") == p, "invalid library name");
a61af66fc99e Initial load
duke
parents:
diff changeset
2351 p = strstr(p, "_g") ? "_g" : "";
a61af66fc99e Initial load
duke
parents:
diff changeset
2352
a61af66fc99e Initial load
duke
parents:
diff changeset
2353 realpath(java_home_var, buf);
a61af66fc99e Initial load
duke
parents:
diff changeset
2354 sprintf(buf + strlen(buf), "/jre/lib/%s", cpu_arch);
a61af66fc99e Initial load
duke
parents:
diff changeset
2355 if (0 == access(buf, F_OK)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2356 // Use current module name "libjvm[_g].so" instead of
a61af66fc99e Initial load
duke
parents:
diff changeset
2357 // "libjvm"debug_only("_g")".so" since for fastdebug version
a61af66fc99e Initial load
duke
parents:
diff changeset
2358 // we should have "libjvm.so" but debug_only("_g") adds "_g"!
a61af66fc99e Initial load
duke
parents:
diff changeset
2359 // It is used when we are choosing the HPI library's name
a61af66fc99e Initial load
duke
parents:
diff changeset
2360 // "libhpi[_g].so" in hpi::initialize_get_interface().
a61af66fc99e Initial load
duke
parents:
diff changeset
2361 sprintf(buf + strlen(buf), "/hotspot/libjvm%s.so", p);
a61af66fc99e Initial load
duke
parents:
diff changeset
2362 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
2363 // Go back to path of .so
a61af66fc99e Initial load
duke
parents:
diff changeset
2364 realpath((char *)dlinfo.dli_fname, buf);
a61af66fc99e Initial load
duke
parents:
diff changeset
2365 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2366 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2367 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2368 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2369
a61af66fc99e Initial load
duke
parents:
diff changeset
2370 strcpy(saved_jvm_path, buf);
a61af66fc99e Initial load
duke
parents:
diff changeset
2371 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2372
a61af66fc99e Initial load
duke
parents:
diff changeset
2373
a61af66fc99e Initial load
duke
parents:
diff changeset
2374 void os::print_jni_name_prefix_on(outputStream* st, int args_size) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2375 // no prefix required, not even "_"
a61af66fc99e Initial load
duke
parents:
diff changeset
2376 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2377
a61af66fc99e Initial load
duke
parents:
diff changeset
2378
a61af66fc99e Initial load
duke
parents:
diff changeset
2379 void os::print_jni_name_suffix_on(outputStream* st, int args_size) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2380 // no suffix required
a61af66fc99e Initial load
duke
parents:
diff changeset
2381 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2382
a61af66fc99e Initial load
duke
parents:
diff changeset
2383
a61af66fc99e Initial load
duke
parents:
diff changeset
2384 // sun.misc.Signal
a61af66fc99e Initial load
duke
parents:
diff changeset
2385
a61af66fc99e Initial load
duke
parents:
diff changeset
2386 extern "C" {
a61af66fc99e Initial load
duke
parents:
diff changeset
2387 static void UserHandler(int sig, void *siginfo, void *context) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2388 // Ctrl-C is pressed during error reporting, likely because the error
a61af66fc99e Initial load
duke
parents:
diff changeset
2389 // handler fails to abort. Let VM die immediately.
a61af66fc99e Initial load
duke
parents:
diff changeset
2390 if (sig == SIGINT && is_error_reported()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2391 os::die();
a61af66fc99e Initial load
duke
parents:
diff changeset
2392 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2393
a61af66fc99e Initial load
duke
parents:
diff changeset
2394 os::signal_notify(sig);
a61af66fc99e Initial load
duke
parents:
diff changeset
2395 // We do not need to reinstate the signal handler each time...
a61af66fc99e Initial load
duke
parents:
diff changeset
2396 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2397 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2398
a61af66fc99e Initial load
duke
parents:
diff changeset
2399 void* os::user_handler() {
a61af66fc99e Initial load
duke
parents:
diff changeset
2400 return CAST_FROM_FN_PTR(void*, UserHandler);
a61af66fc99e Initial load
duke
parents:
diff changeset
2401 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2402
a61af66fc99e Initial load
duke
parents:
diff changeset
2403 extern "C" {
a61af66fc99e Initial load
duke
parents:
diff changeset
2404 typedef void (*sa_handler_t)(int);
a61af66fc99e Initial load
duke
parents:
diff changeset
2405 typedef void (*sa_sigaction_t)(int, siginfo_t *, void *);
a61af66fc99e Initial load
duke
parents:
diff changeset
2406 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2407
a61af66fc99e Initial load
duke
parents:
diff changeset
2408 void* os::signal(int signal_number, void* handler) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2409 struct sigaction sigAct, oldSigAct;
a61af66fc99e Initial load
duke
parents:
diff changeset
2410 sigfillset(&(sigAct.sa_mask));
a61af66fc99e Initial load
duke
parents:
diff changeset
2411 sigAct.sa_flags = SA_RESTART & ~SA_RESETHAND;
a61af66fc99e Initial load
duke
parents:
diff changeset
2412 sigAct.sa_handler = CAST_TO_FN_PTR(sa_handler_t, handler);
a61af66fc99e Initial load
duke
parents:
diff changeset
2413
a61af66fc99e Initial load
duke
parents:
diff changeset
2414 if (sigaction(signal_number, &sigAct, &oldSigAct))
a61af66fc99e Initial load
duke
parents:
diff changeset
2415 // -1 means registration failed
a61af66fc99e Initial load
duke
parents:
diff changeset
2416 return (void *)-1;
a61af66fc99e Initial load
duke
parents:
diff changeset
2417
a61af66fc99e Initial load
duke
parents:
diff changeset
2418 return CAST_FROM_FN_PTR(void*, oldSigAct.sa_handler);
a61af66fc99e Initial load
duke
parents:
diff changeset
2419 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2420
a61af66fc99e Initial load
duke
parents:
diff changeset
2421 void os::signal_raise(int signal_number) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2422 raise(signal_number);
a61af66fc99e Initial load
duke
parents:
diff changeset
2423 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2424
a61af66fc99e Initial load
duke
parents:
diff changeset
2425 /*
a61af66fc99e Initial load
duke
parents:
diff changeset
2426 * The following code is moved from os.cpp for making this
a61af66fc99e Initial load
duke
parents:
diff changeset
2427 * code platform specific, which it is by its very nature.
a61af66fc99e Initial load
duke
parents:
diff changeset
2428 */
a61af66fc99e Initial load
duke
parents:
diff changeset
2429
a61af66fc99e Initial load
duke
parents:
diff changeset
2430 // a counter for each possible signal value
a61af66fc99e Initial load
duke
parents:
diff changeset
2431 static int Sigexit = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
2432 static int Maxlibjsigsigs;
a61af66fc99e Initial load
duke
parents:
diff changeset
2433 static jint *pending_signals = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
2434 static int *preinstalled_sigs = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
2435 static struct sigaction *chainedsigactions = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
2436 static sema_t sig_sem;
a61af66fc99e Initial load
duke
parents:
diff changeset
2437 typedef int (*version_getting_t)();
a61af66fc99e Initial load
duke
parents:
diff changeset
2438 version_getting_t os::Solaris::get_libjsig_version = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
2439 static int libjsigversion = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
2440
a61af66fc99e Initial load
duke
parents:
diff changeset
2441 int os::sigexitnum_pd() {
a61af66fc99e Initial load
duke
parents:
diff changeset
2442 assert(Sigexit > 0, "signal memory not yet initialized");
a61af66fc99e Initial load
duke
parents:
diff changeset
2443 return Sigexit;
a61af66fc99e Initial load
duke
parents:
diff changeset
2444 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2445
a61af66fc99e Initial load
duke
parents:
diff changeset
2446 void os::Solaris::init_signal_mem() {
a61af66fc99e Initial load
duke
parents:
diff changeset
2447 // Initialize signal structures
a61af66fc99e Initial load
duke
parents:
diff changeset
2448 Maxsignum = SIGRTMAX;
a61af66fc99e Initial load
duke
parents:
diff changeset
2449 Sigexit = Maxsignum+1;
a61af66fc99e Initial load
duke
parents:
diff changeset
2450 assert(Maxsignum >0, "Unable to obtain max signal number");
a61af66fc99e Initial load
duke
parents:
diff changeset
2451
a61af66fc99e Initial load
duke
parents:
diff changeset
2452 Maxlibjsigsigs = Maxsignum;
a61af66fc99e Initial load
duke
parents:
diff changeset
2453
a61af66fc99e Initial load
duke
parents:
diff changeset
2454 // pending_signals has one int per signal
a61af66fc99e Initial load
duke
parents:
diff changeset
2455 // The additional signal is for SIGEXIT - exit signal to signal_thread
a61af66fc99e Initial load
duke
parents:
diff changeset
2456 pending_signals = (jint *)os::malloc(sizeof(jint) * (Sigexit+1));
a61af66fc99e Initial load
duke
parents:
diff changeset
2457 memset(pending_signals, 0, (sizeof(jint) * (Sigexit+1)));
a61af66fc99e Initial load
duke
parents:
diff changeset
2458
a61af66fc99e Initial load
duke
parents:
diff changeset
2459 if (UseSignalChaining) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2460 chainedsigactions = (struct sigaction *)malloc(sizeof(struct sigaction)
a61af66fc99e Initial load
duke
parents:
diff changeset
2461 * (Maxsignum + 1));
a61af66fc99e Initial load
duke
parents:
diff changeset
2462 memset(chainedsigactions, 0, (sizeof(struct sigaction) * (Maxsignum + 1)));
a61af66fc99e Initial load
duke
parents:
diff changeset
2463 preinstalled_sigs = (int *)os::malloc(sizeof(int) * (Maxsignum + 1));
a61af66fc99e Initial load
duke
parents:
diff changeset
2464 memset(preinstalled_sigs, 0, (sizeof(int) * (Maxsignum + 1)));
a61af66fc99e Initial load
duke
parents:
diff changeset
2465 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2466 ourSigFlags = (int*)malloc(sizeof(int) * (Maxsignum + 1 ));
a61af66fc99e Initial load
duke
parents:
diff changeset
2467 memset(ourSigFlags, 0, sizeof(int) * (Maxsignum + 1));
a61af66fc99e Initial load
duke
parents:
diff changeset
2468 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2469
a61af66fc99e Initial load
duke
parents:
diff changeset
2470 void os::signal_init_pd() {
a61af66fc99e Initial load
duke
parents:
diff changeset
2471 int ret;
a61af66fc99e Initial load
duke
parents:
diff changeset
2472
a61af66fc99e Initial load
duke
parents:
diff changeset
2473 ret = ::sema_init(&sig_sem, 0, NULL, NULL);
a61af66fc99e Initial load
duke
parents:
diff changeset
2474 assert(ret == 0, "sema_init() failed");
a61af66fc99e Initial load
duke
parents:
diff changeset
2475 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2476
a61af66fc99e Initial load
duke
parents:
diff changeset
2477 void os::signal_notify(int signal_number) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2478 int ret;
a61af66fc99e Initial load
duke
parents:
diff changeset
2479
a61af66fc99e Initial load
duke
parents:
diff changeset
2480 Atomic::inc(&pending_signals[signal_number]);
a61af66fc99e Initial load
duke
parents:
diff changeset
2481 ret = ::sema_post(&sig_sem);
a61af66fc99e Initial load
duke
parents:
diff changeset
2482 assert(ret == 0, "sema_post() failed");
a61af66fc99e Initial load
duke
parents:
diff changeset
2483 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2484
a61af66fc99e Initial load
duke
parents:
diff changeset
2485 static int check_pending_signals(bool wait_for_signal) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2486 int ret;
a61af66fc99e Initial load
duke
parents:
diff changeset
2487 while (true) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2488 for (int i = 0; i < Sigexit + 1; i++) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2489 jint n = pending_signals[i];
a61af66fc99e Initial load
duke
parents:
diff changeset
2490 if (n > 0 && n == Atomic::cmpxchg(n - 1, &pending_signals[i], n)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2491 return i;
a61af66fc99e Initial load
duke
parents:
diff changeset
2492 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2493 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2494 if (!wait_for_signal) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2495 return -1;
a61af66fc99e Initial load
duke
parents:
diff changeset
2496 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2497 JavaThread *thread = JavaThread::current();
a61af66fc99e Initial load
duke
parents:
diff changeset
2498 ThreadBlockInVM tbivm(thread);
a61af66fc99e Initial load
duke
parents:
diff changeset
2499
a61af66fc99e Initial load
duke
parents:
diff changeset
2500 bool threadIsSuspended;
a61af66fc99e Initial load
duke
parents:
diff changeset
2501 do {
a61af66fc99e Initial load
duke
parents:
diff changeset
2502 thread->set_suspend_equivalent();
a61af66fc99e Initial load
duke
parents:
diff changeset
2503 // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self()
a61af66fc99e Initial load
duke
parents:
diff changeset
2504 while((ret = ::sema_wait(&sig_sem)) == EINTR)
a61af66fc99e Initial load
duke
parents:
diff changeset
2505 ;
a61af66fc99e Initial load
duke
parents:
diff changeset
2506 assert(ret == 0, "sema_wait() failed");
a61af66fc99e Initial load
duke
parents:
diff changeset
2507
a61af66fc99e Initial load
duke
parents:
diff changeset
2508 // were we externally suspended while we were waiting?
a61af66fc99e Initial load
duke
parents:
diff changeset
2509 threadIsSuspended = thread->handle_special_suspend_equivalent_condition();
a61af66fc99e Initial load
duke
parents:
diff changeset
2510 if (threadIsSuspended) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2511 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2512 // The semaphore has been incremented, but while we were waiting
a61af66fc99e Initial load
duke
parents:
diff changeset
2513 // another thread suspended us. We don't want to continue running
a61af66fc99e Initial load
duke
parents:
diff changeset
2514 // while suspended because that would surprise the thread that
a61af66fc99e Initial load
duke
parents:
diff changeset
2515 // suspended us.
a61af66fc99e Initial load
duke
parents:
diff changeset
2516 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2517 ret = ::sema_post(&sig_sem);
a61af66fc99e Initial load
duke
parents:
diff changeset
2518 assert(ret == 0, "sema_post() failed");
a61af66fc99e Initial load
duke
parents:
diff changeset
2519
a61af66fc99e Initial load
duke
parents:
diff changeset
2520 thread->java_suspend_self();
a61af66fc99e Initial load
duke
parents:
diff changeset
2521 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2522 } while (threadIsSuspended);
a61af66fc99e Initial load
duke
parents:
diff changeset
2523 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2524 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2525
a61af66fc99e Initial load
duke
parents:
diff changeset
2526 int os::signal_lookup() {
a61af66fc99e Initial load
duke
parents:
diff changeset
2527 return check_pending_signals(false);
a61af66fc99e Initial load
duke
parents:
diff changeset
2528 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2529
a61af66fc99e Initial load
duke
parents:
diff changeset
2530 int os::signal_wait() {
a61af66fc99e Initial load
duke
parents:
diff changeset
2531 return check_pending_signals(true);
a61af66fc99e Initial load
duke
parents:
diff changeset
2532 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2533
a61af66fc99e Initial load
duke
parents:
diff changeset
2534 ////////////////////////////////////////////////////////////////////////////////
a61af66fc99e Initial load
duke
parents:
diff changeset
2535 // Virtual Memory
a61af66fc99e Initial load
duke
parents:
diff changeset
2536
a61af66fc99e Initial load
duke
parents:
diff changeset
2537 static int page_size = -1;
a61af66fc99e Initial load
duke
parents:
diff changeset
2538
a61af66fc99e Initial load
duke
parents:
diff changeset
2539 // The mmap MAP_ALIGN flag is supported on Solaris 9 and later. init_2() will
a61af66fc99e Initial load
duke
parents:
diff changeset
2540 // clear this var if support is not available.
a61af66fc99e Initial load
duke
parents:
diff changeset
2541 static bool has_map_align = true;
a61af66fc99e Initial load
duke
parents:
diff changeset
2542
a61af66fc99e Initial load
duke
parents:
diff changeset
2543 int os::vm_page_size() {
a61af66fc99e Initial load
duke
parents:
diff changeset
2544 assert(page_size != -1, "must call os::init");
a61af66fc99e Initial load
duke
parents:
diff changeset
2545 return page_size;
a61af66fc99e Initial load
duke
parents:
diff changeset
2546 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2547
a61af66fc99e Initial load
duke
parents:
diff changeset
2548 // Solaris allocates memory by pages.
a61af66fc99e Initial load
duke
parents:
diff changeset
2549 int os::vm_allocation_granularity() {
a61af66fc99e Initial load
duke
parents:
diff changeset
2550 assert(page_size != -1, "must call os::init");
a61af66fc99e Initial load
duke
parents:
diff changeset
2551 return page_size;
a61af66fc99e Initial load
duke
parents:
diff changeset
2552 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2553
a61af66fc99e Initial load
duke
parents:
diff changeset
2554 bool os::commit_memory(char* addr, size_t bytes) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2555 size_t size = bytes;
a61af66fc99e Initial load
duke
parents:
diff changeset
2556 return
a61af66fc99e Initial load
duke
parents:
diff changeset
2557 NULL != Solaris::mmap_chunk(addr, size, MAP_PRIVATE|MAP_FIXED,
a61af66fc99e Initial load
duke
parents:
diff changeset
2558 PROT_READ | PROT_WRITE | PROT_EXEC);
a61af66fc99e Initial load
duke
parents:
diff changeset
2559 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2560
a61af66fc99e Initial load
duke
parents:
diff changeset
2561 bool os::commit_memory(char* addr, size_t bytes, size_t alignment_hint) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2562 if (commit_memory(addr, bytes)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2563 if (UseMPSS && alignment_hint > (size_t)vm_page_size()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2564 // If the large page size has been set and the VM
a61af66fc99e Initial load
duke
parents:
diff changeset
2565 // is using large pages, use the large page size
a61af66fc99e Initial load
duke
parents:
diff changeset
2566 // if it is smaller than the alignment hint. This is
a61af66fc99e Initial load
duke
parents:
diff changeset
2567 // a case where the VM wants to use a larger alignment size
a61af66fc99e Initial load
duke
parents:
diff changeset
2568 // for its own reasons but still want to use large pages
a61af66fc99e Initial load
duke
parents:
diff changeset
2569 // (which is what matters to setting the mpss range.
a61af66fc99e Initial load
duke
parents:
diff changeset
2570 size_t page_size = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
2571 if (large_page_size() < alignment_hint) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2572 assert(UseLargePages, "Expected to be here for large page use only");
a61af66fc99e Initial load
duke
parents:
diff changeset
2573 page_size = large_page_size();
a61af66fc99e Initial load
duke
parents:
diff changeset
2574 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
2575 // If the alignment hint is less than the large page
a61af66fc99e Initial load
duke
parents:
diff changeset
2576 // size, the VM wants a particular alignment (thus the hint)
a61af66fc99e Initial load
duke
parents:
diff changeset
2577 // for internal reasons. Try to set the mpss range using
a61af66fc99e Initial load
duke
parents:
diff changeset
2578 // the alignment_hint.
a61af66fc99e Initial load
duke
parents:
diff changeset
2579 page_size = alignment_hint;
a61af66fc99e Initial load
duke
parents:
diff changeset
2580 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2581 // Since this is a hint, ignore any failures.
a61af66fc99e Initial load
duke
parents:
diff changeset
2582 (void)Solaris::set_mpss_range(addr, bytes, page_size);
a61af66fc99e Initial load
duke
parents:
diff changeset
2583 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2584 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
2585 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2586 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
2587 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2588
a61af66fc99e Initial load
duke
parents:
diff changeset
2589 // Uncommit the pages in a specified region.
a61af66fc99e Initial load
duke
parents:
diff changeset
2590 void os::free_memory(char* addr, size_t bytes) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2591 if (madvise(addr, bytes, MADV_FREE) < 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2592 debug_only(warning("MADV_FREE failed."));
a61af66fc99e Initial load
duke
parents:
diff changeset
2593 return;
a61af66fc99e Initial load
duke
parents:
diff changeset
2594 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2595 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2596
a61af66fc99e Initial load
duke
parents:
diff changeset
2597 // Change the page size in a given range.
a61af66fc99e Initial load
duke
parents:
diff changeset
2598 void os::realign_memory(char *addr, size_t bytes, size_t alignment_hint) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2599 assert((intptr_t)addr % alignment_hint == 0, "Address should be aligned.");
a61af66fc99e Initial load
duke
parents:
diff changeset
2600 assert((intptr_t)(addr + bytes) % alignment_hint == 0, "End should be aligned.");
a61af66fc99e Initial load
duke
parents:
diff changeset
2601 Solaris::set_mpss_range(addr, bytes, alignment_hint);
a61af66fc99e Initial load
duke
parents:
diff changeset
2602 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2603
a61af66fc99e Initial load
duke
parents:
diff changeset
2604 // Tell the OS to make the range local to the first-touching LWP
a61af66fc99e Initial load
duke
parents:
diff changeset
2605 void os::numa_make_local(char *addr, size_t bytes) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2606 assert((intptr_t)addr % os::vm_page_size() == 0, "Address should be page-aligned.");
a61af66fc99e Initial load
duke
parents:
diff changeset
2607 if (madvise(addr, bytes, MADV_ACCESS_LWP) < 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2608 debug_only(warning("MADV_ACCESS_LWP failed."));
a61af66fc99e Initial load
duke
parents:
diff changeset
2609 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2610 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2611
a61af66fc99e Initial load
duke
parents:
diff changeset
2612 // Tell the OS that this range would be accessed from different LWPs.
a61af66fc99e Initial load
duke
parents:
diff changeset
2613 void os::numa_make_global(char *addr, size_t bytes) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2614 assert((intptr_t)addr % os::vm_page_size() == 0, "Address should be page-aligned.");
a61af66fc99e Initial load
duke
parents:
diff changeset
2615 if (madvise(addr, bytes, MADV_ACCESS_MANY) < 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2616 debug_only(warning("MADV_ACCESS_MANY failed."));
a61af66fc99e Initial load
duke
parents:
diff changeset
2617 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2618 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2619
a61af66fc99e Initial load
duke
parents:
diff changeset
2620 // Get the number of the locality groups.
a61af66fc99e Initial load
duke
parents:
diff changeset
2621 size_t os::numa_get_groups_num() {
a61af66fc99e Initial load
duke
parents:
diff changeset
2622 size_t n = Solaris::lgrp_nlgrps(Solaris::lgrp_cookie());
a61af66fc99e Initial load
duke
parents:
diff changeset
2623 return n != -1 ? n : 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
2624 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2625
a61af66fc99e Initial load
duke
parents:
diff changeset
2626 // Get a list of leaf locality groups. A leaf lgroup is group that
a61af66fc99e Initial load
duke
parents:
diff changeset
2627 // doesn't have any children. Typical leaf group is a CPU or a CPU/memory
a61af66fc99e Initial load
duke
parents:
diff changeset
2628 // board. An LWP is assigned to one of these groups upon creation.
a61af66fc99e Initial load
duke
parents:
diff changeset
2629 size_t os::numa_get_leaf_groups(int *ids, size_t size) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2630 if ((ids[0] = Solaris::lgrp_root(Solaris::lgrp_cookie())) == -1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2631 ids[0] = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
2632 return 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
2633 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2634 int result_size = 0, top = 1, bottom = 0, cur = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
2635 for (int k = 0; k < size; k++) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2636 int r = Solaris::lgrp_children(Solaris::lgrp_cookie(), ids[cur],
a61af66fc99e Initial load
duke
parents:
diff changeset
2637 (Solaris::lgrp_id_t*)&ids[top], size - top);
a61af66fc99e Initial load
duke
parents:
diff changeset
2638 if (r == -1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2639 ids[0] = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
2640 return 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
2641 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2642 if (!r) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2643 assert (bottom <= cur, "Sanity check");
a61af66fc99e Initial load
duke
parents:
diff changeset
2644 ids[bottom++] = ids[cur];
a61af66fc99e Initial load
duke
parents:
diff changeset
2645 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2646 top += r;
a61af66fc99e Initial load
duke
parents:
diff changeset
2647 cur++;
a61af66fc99e Initial load
duke
parents:
diff changeset
2648 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2649 return bottom;
a61af66fc99e Initial load
duke
parents:
diff changeset
2650 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2651
a61af66fc99e Initial load
duke
parents:
diff changeset
2652 // Detect the topology change. Typically happens during CPU pluggin-unplugging.
a61af66fc99e Initial load
duke
parents:
diff changeset
2653 bool os::numa_topology_changed() {
a61af66fc99e Initial load
duke
parents:
diff changeset
2654 int is_stale = Solaris::lgrp_cookie_stale(Solaris::lgrp_cookie());
a61af66fc99e Initial load
duke
parents:
diff changeset
2655 if (is_stale != -1 && is_stale) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2656 Solaris::lgrp_fini(Solaris::lgrp_cookie());
a61af66fc99e Initial load
duke
parents:
diff changeset
2657 Solaris::lgrp_cookie_t c = Solaris::lgrp_init(Solaris::LGRP_VIEW_CALLER);
a61af66fc99e Initial load
duke
parents:
diff changeset
2658 assert(c != 0, "Failure to initialize LGRP API");
a61af66fc99e Initial load
duke
parents:
diff changeset
2659 Solaris::set_lgrp_cookie(c);
a61af66fc99e Initial load
duke
parents:
diff changeset
2660 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
2661 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2662 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
2663 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2664
a61af66fc99e Initial load
duke
parents:
diff changeset
2665 // Get the group id of the current LWP.
a61af66fc99e Initial load
duke
parents:
diff changeset
2666 int os::numa_get_group_id() {
a61af66fc99e Initial load
duke
parents:
diff changeset
2667 int lgrp_id = os::Solaris::lgrp_home(P_LWPID, P_MYID);
a61af66fc99e Initial load
duke
parents:
diff changeset
2668 if (lgrp_id == -1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2669 return 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
2670 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2671 return lgrp_id;
a61af66fc99e Initial load
duke
parents:
diff changeset
2672 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2673
a61af66fc99e Initial load
duke
parents:
diff changeset
2674 // Request information about the page.
a61af66fc99e Initial load
duke
parents:
diff changeset
2675 bool os::get_page_info(char *start, page_info* info) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2676 const uint_t info_types[] = { MEMINFO_VLGRP, MEMINFO_VPAGESIZE };
a61af66fc99e Initial load
duke
parents:
diff changeset
2677 uint64_t addr = (uintptr_t)start;
a61af66fc99e Initial load
duke
parents:
diff changeset
2678 uint64_t outdata[2];
a61af66fc99e Initial load
duke
parents:
diff changeset
2679 uint_t validity = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
2680
a61af66fc99e Initial load
duke
parents:
diff changeset
2681 if (os::Solaris::meminfo(&addr, 1, info_types, 2, outdata, &validity) < 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2682 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
2683 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2684
a61af66fc99e Initial load
duke
parents:
diff changeset
2685 info->size = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
2686 info->lgrp_id = -1;
a61af66fc99e Initial load
duke
parents:
diff changeset
2687
a61af66fc99e Initial load
duke
parents:
diff changeset
2688 if ((validity & 1) != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2689 if ((validity & 2) != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2690 info->lgrp_id = outdata[0];
a61af66fc99e Initial load
duke
parents:
diff changeset
2691 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2692 if ((validity & 4) != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2693 info->size = outdata[1];
a61af66fc99e Initial load
duke
parents:
diff changeset
2694 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2695 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
2696 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2697 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
2698 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2699
a61af66fc99e Initial load
duke
parents:
diff changeset
2700 // Scan the pages from start to end until a page different than
a61af66fc99e Initial load
duke
parents:
diff changeset
2701 // the one described in the info parameter is encountered.
a61af66fc99e Initial load
duke
parents:
diff changeset
2702 char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2703 const uint_t info_types[] = { MEMINFO_VLGRP, MEMINFO_VPAGESIZE };
a61af66fc99e Initial load
duke
parents:
diff changeset
2704 const size_t types = sizeof(info_types) / sizeof(info_types[0]);
a61af66fc99e Initial load
duke
parents:
diff changeset
2705 uint64_t addrs[MAX_MEMINFO_CNT], outdata[types * MAX_MEMINFO_CNT];
a61af66fc99e Initial load
duke
parents:
diff changeset
2706 uint_t validity[MAX_MEMINFO_CNT];
a61af66fc99e Initial load
duke
parents:
diff changeset
2707
a61af66fc99e Initial load
duke
parents:
diff changeset
2708 size_t page_size = MAX2((size_t)os::vm_page_size(), page_expected->size);
a61af66fc99e Initial load
duke
parents:
diff changeset
2709 uint64_t p = (uint64_t)start;
a61af66fc99e Initial load
duke
parents:
diff changeset
2710 while (p < (uint64_t)end) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2711 addrs[0] = p;
a61af66fc99e Initial load
duke
parents:
diff changeset
2712 size_t addrs_count = 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
2713 while (addrs_count < MAX_MEMINFO_CNT && addrs[addrs_count - 1] < (uint64_t)end) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2714 addrs[addrs_count] = addrs[addrs_count - 1] + page_size;
a61af66fc99e Initial load
duke
parents:
diff changeset
2715 addrs_count++;
a61af66fc99e Initial load
duke
parents:
diff changeset
2716 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2717
a61af66fc99e Initial load
duke
parents:
diff changeset
2718 if (os::Solaris::meminfo(addrs, addrs_count, info_types, types, outdata, validity) < 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2719 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
2720 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2721
a61af66fc99e Initial load
duke
parents:
diff changeset
2722 size_t i = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
2723 for (; i < addrs_count; i++) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2724 if ((validity[i] & 1) != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2725 if ((validity[i] & 4) != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2726 if (outdata[types * i + 1] != page_expected->size) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2727 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
2728 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2729 } else
a61af66fc99e Initial load
duke
parents:
diff changeset
2730 if (page_expected->size != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2731 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
2732 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2733
a61af66fc99e Initial load
duke
parents:
diff changeset
2734 if ((validity[i] & 2) != 0 && page_expected->lgrp_id > 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2735 if (outdata[types * i] != page_expected->lgrp_id) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2736 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
2737 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2738 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2739 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
2740 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
2741 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2742 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2743
a61af66fc99e Initial load
duke
parents:
diff changeset
2744 if (i != addrs_count) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2745 if ((validity[i] & 2) != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2746 page_found->lgrp_id = outdata[types * i];
a61af66fc99e Initial load
duke
parents:
diff changeset
2747 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
2748 page_found->lgrp_id = -1;
a61af66fc99e Initial load
duke
parents:
diff changeset
2749 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2750 if ((validity[i] & 4) != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2751 page_found->size = outdata[types * i + 1];
a61af66fc99e Initial load
duke
parents:
diff changeset
2752 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
2753 page_found->size = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
2754 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2755 return (char*)addrs[i];
a61af66fc99e Initial load
duke
parents:
diff changeset
2756 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2757
a61af66fc99e Initial load
duke
parents:
diff changeset
2758 p = addrs[addrs_count - 1] + page_size;
a61af66fc99e Initial load
duke
parents:
diff changeset
2759 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2760 return end;
a61af66fc99e Initial load
duke
parents:
diff changeset
2761 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2762
a61af66fc99e Initial load
duke
parents:
diff changeset
2763 bool os::uncommit_memory(char* addr, size_t bytes) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2764 size_t size = bytes;
a61af66fc99e Initial load
duke
parents:
diff changeset
2765 // Map uncommitted pages PROT_NONE so we fail early if we touch an
a61af66fc99e Initial load
duke
parents:
diff changeset
2766 // uncommitted page. Otherwise, the read/write might succeed if we
a61af66fc99e Initial load
duke
parents:
diff changeset
2767 // have enough swap space to back the physical page.
a61af66fc99e Initial load
duke
parents:
diff changeset
2768 return
a61af66fc99e Initial load
duke
parents:
diff changeset
2769 NULL != Solaris::mmap_chunk(addr, size,
a61af66fc99e Initial load
duke
parents:
diff changeset
2770 MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE,
a61af66fc99e Initial load
duke
parents:
diff changeset
2771 PROT_NONE);
a61af66fc99e Initial load
duke
parents:
diff changeset
2772 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2773
a61af66fc99e Initial load
duke
parents:
diff changeset
2774 char* os::Solaris::mmap_chunk(char *addr, size_t size, int flags, int prot) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2775 char *b = (char *)mmap(addr, size, prot, flags, os::Solaris::_dev_zero_fd, 0);
a61af66fc99e Initial load
duke
parents:
diff changeset
2776
a61af66fc99e Initial load
duke
parents:
diff changeset
2777 if (b == MAP_FAILED) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2778 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
2779 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2780 return b;
a61af66fc99e Initial load
duke
parents:
diff changeset
2781 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2782
60
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2783 char* os::Solaris::anon_mmap(char* requested_addr, size_t bytes, size_t alignment_hint, bool fixed) {
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2784 char* addr = requested_addr;
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2785 int flags = MAP_PRIVATE | MAP_NORESERVE;
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2786
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2787 assert(!(fixed && (alignment_hint > 0)), "alignment hint meaningless with fixed mmap");
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2788
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2789 if (fixed) {
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2790 flags |= MAP_FIXED;
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2791 } else if (has_map_align && (alignment_hint > (size_t) vm_page_size())) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2792 flags |= MAP_ALIGN;
a61af66fc99e Initial load
duke
parents:
diff changeset
2793 addr = (char*) alignment_hint;
a61af66fc99e Initial load
duke
parents:
diff changeset
2794 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2795
a61af66fc99e Initial load
duke
parents:
diff changeset
2796 // Map uncommitted pages PROT_NONE so we fail early if we touch an
a61af66fc99e Initial load
duke
parents:
diff changeset
2797 // uncommitted page. Otherwise, the read/write might succeed if we
a61af66fc99e Initial load
duke
parents:
diff changeset
2798 // have enough swap space to back the physical page.
60
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2799 return mmap_chunk(addr, bytes, flags, PROT_NONE);
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2800 }
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2801
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2802 char* os::reserve_memory(size_t bytes, char* requested_addr, size_t alignment_hint) {
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2803 char* addr = Solaris::anon_mmap(requested_addr, bytes, alignment_hint, (requested_addr != NULL));
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2804
a61af66fc99e Initial load
duke
parents:
diff changeset
2805 guarantee(requested_addr == NULL || requested_addr == addr,
a61af66fc99e Initial load
duke
parents:
diff changeset
2806 "OS failed to return requested mmap address.");
a61af66fc99e Initial load
duke
parents:
diff changeset
2807 return addr;
a61af66fc99e Initial load
duke
parents:
diff changeset
2808 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2809
a61af66fc99e Initial load
duke
parents:
diff changeset
2810 // Reserve memory at an arbitrary address, only if that area is
a61af66fc99e Initial load
duke
parents:
diff changeset
2811 // available (and not reserved for something else).
a61af66fc99e Initial load
duke
parents:
diff changeset
2812
a61af66fc99e Initial load
duke
parents:
diff changeset
2813 char* os::attempt_reserve_memory_at(size_t bytes, char* requested_addr) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2814 const int max_tries = 10;
a61af66fc99e Initial load
duke
parents:
diff changeset
2815 char* base[max_tries];
a61af66fc99e Initial load
duke
parents:
diff changeset
2816 size_t size[max_tries];
a61af66fc99e Initial load
duke
parents:
diff changeset
2817
a61af66fc99e Initial load
duke
parents:
diff changeset
2818 // Solaris adds a gap between mmap'ed regions. The size of the gap
a61af66fc99e Initial load
duke
parents:
diff changeset
2819 // is dependent on the requested size and the MMU. Our initial gap
a61af66fc99e Initial load
duke
parents:
diff changeset
2820 // value here is just a guess and will be corrected later.
a61af66fc99e Initial load
duke
parents:
diff changeset
2821 bool had_top_overlap = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
2822 bool have_adjusted_gap = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
2823 size_t gap = 0x400000;
a61af66fc99e Initial load
duke
parents:
diff changeset
2824
a61af66fc99e Initial load
duke
parents:
diff changeset
2825 // Assert only that the size is a multiple of the page size, since
a61af66fc99e Initial load
duke
parents:
diff changeset
2826 // that's all that mmap requires, and since that's all we really know
a61af66fc99e Initial load
duke
parents:
diff changeset
2827 // about at this low abstraction level. If we need higher alignment,
a61af66fc99e Initial load
duke
parents:
diff changeset
2828 // we can either pass an alignment to this method or verify alignment
a61af66fc99e Initial load
duke
parents:
diff changeset
2829 // in one of the methods further up the call chain. See bug 5044738.
a61af66fc99e Initial load
duke
parents:
diff changeset
2830 assert(bytes % os::vm_page_size() == 0, "reserving unexpected size block");
a61af66fc99e Initial load
duke
parents:
diff changeset
2831
60
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2832 // Since snv_84, Solaris attempts to honor the address hint - see 5003415.
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2833 // Give it a try, if the kernel honors the hint we can return immediately.
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2834 char* addr = Solaris::anon_mmap(requested_addr, bytes, 0, false);
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2835 volatile int err = errno;
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2836 if (addr == requested_addr) {
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2837 return addr;
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2838 } else if (addr != NULL) {
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2839 unmap_memory(addr, bytes);
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2840 }
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2841
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2842 if (PrintMiscellaneous && Verbose) {
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2843 char buf[256];
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2844 buf[0] = '\0';
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2845 if (addr == NULL) {
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2846 jio_snprintf(buf, sizeof(buf), ": %s", strerror(err));
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2847 }
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2848 warning("attempt_reserve_memory_at: couldn't reserve %d bytes at "
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2849 PTR_FORMAT ": reserve_memory_helper returned " PTR_FORMAT
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2850 "%s", bytes, requested_addr, addr, buf);
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2851 }
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2852
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2853 // Address hint method didn't work. Fall back to the old method.
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2854 // In theory, once SNV becomes our oldest supported platform, this
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2855 // code will no longer be needed.
8d84e28e68ba 6204603: Modify hotspot to use new Solaris mmap semantics for class data archive file
sbohne
parents: 0
diff changeset
2856 //
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2857 // Repeatedly allocate blocks until the block is allocated at the
a61af66fc99e Initial load
duke
parents:
diff changeset
2858 // right spot. Give up after max_tries.
a61af66fc99e Initial load
duke
parents:
diff changeset
2859 int i;
a61af66fc99e Initial load
duke
parents:
diff changeset
2860 for (i = 0; i < max_tries; ++i) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2861 base[i] = reserve_memory(bytes);
a61af66fc99e Initial load
duke
parents:
diff changeset
2862
a61af66fc99e Initial load
duke
parents:
diff changeset
2863 if (base[i] != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2864 // Is this the block we wanted?
a61af66fc99e Initial load
duke
parents:
diff changeset
2865 if (base[i] == requested_addr) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2866 size[i] = bytes;
a61af66fc99e Initial load
duke
parents:
diff changeset
2867 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
2868 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2869
a61af66fc99e Initial load
duke
parents:
diff changeset
2870 // check that the gap value is right
a61af66fc99e Initial load
duke
parents:
diff changeset
2871 if (had_top_overlap && !have_adjusted_gap) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2872 size_t actual_gap = base[i-1] - base[i] - bytes;
a61af66fc99e Initial load
duke
parents:
diff changeset
2873 if (gap != actual_gap) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2874 // adjust the gap value and retry the last 2 allocations
a61af66fc99e Initial load
duke
parents:
diff changeset
2875 assert(i > 0, "gap adjustment code problem");
a61af66fc99e Initial load
duke
parents:
diff changeset
2876 have_adjusted_gap = true; // adjust the gap only once, just in case
a61af66fc99e Initial load
duke
parents:
diff changeset
2877 gap = actual_gap;
a61af66fc99e Initial load
duke
parents:
diff changeset
2878 if (PrintMiscellaneous && Verbose) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2879 warning("attempt_reserve_memory_at: adjusted gap to 0x%lx", gap);
a61af66fc99e Initial load
duke
parents:
diff changeset
2880 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2881 unmap_memory(base[i], bytes);
a61af66fc99e Initial load
duke
parents:
diff changeset
2882 unmap_memory(base[i-1], size[i-1]);
a61af66fc99e Initial load
duke
parents:
diff changeset
2883 i-=2;
a61af66fc99e Initial load
duke
parents:
diff changeset
2884 continue;
a61af66fc99e Initial load
duke
parents:
diff changeset
2885 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2886 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2887
a61af66fc99e Initial load
duke
parents:
diff changeset
2888 // Does this overlap the block we wanted? Give back the overlapped
a61af66fc99e Initial load
duke
parents:
diff changeset
2889 // parts and try again.
a61af66fc99e Initial load
duke
parents:
diff changeset
2890 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2891 // There is still a bug in this code: if top_overlap == bytes,
a61af66fc99e Initial load
duke
parents:
diff changeset
2892 // the overlap is offset from requested region by the value of gap.
a61af66fc99e Initial load
duke
parents:
diff changeset
2893 // In this case giving back the overlapped part will not work,
a61af66fc99e Initial load
duke
parents:
diff changeset
2894 // because we'll give back the entire block at base[i] and
a61af66fc99e Initial load
duke
parents:
diff changeset
2895 // therefore the subsequent allocation will not generate a new gap.
a61af66fc99e Initial load
duke
parents:
diff changeset
2896 // This could be fixed with a new algorithm that used larger
a61af66fc99e Initial load
duke
parents:
diff changeset
2897 // or variable size chunks to find the requested region -
a61af66fc99e Initial load
duke
parents:
diff changeset
2898 // but such a change would introduce additional complications.
a61af66fc99e Initial load
duke
parents:
diff changeset
2899 // It's rare enough that the planets align for this bug,
a61af66fc99e Initial load
duke
parents:
diff changeset
2900 // so we'll just wait for a fix for 6204603/5003415 which
a61af66fc99e Initial load
duke
parents:
diff changeset
2901 // will provide a mmap flag to allow us to avoid this business.
a61af66fc99e Initial load
duke
parents:
diff changeset
2902
a61af66fc99e Initial load
duke
parents:
diff changeset
2903 size_t top_overlap = requested_addr + (bytes + gap) - base[i];
a61af66fc99e Initial load
duke
parents:
diff changeset
2904 if (top_overlap >= 0 && top_overlap < bytes) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2905 had_top_overlap = true;
a61af66fc99e Initial load
duke
parents:
diff changeset
2906 unmap_memory(base[i], top_overlap);
a61af66fc99e Initial load
duke
parents:
diff changeset
2907 base[i] += top_overlap;
a61af66fc99e Initial load
duke
parents:
diff changeset
2908 size[i] = bytes - top_overlap;
a61af66fc99e Initial load
duke
parents:
diff changeset
2909 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
2910 size_t bottom_overlap = base[i] + bytes - requested_addr;
a61af66fc99e Initial load
duke
parents:
diff changeset
2911 if (bottom_overlap >= 0 && bottom_overlap < bytes) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2912 if (PrintMiscellaneous && Verbose && bottom_overlap == 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2913 warning("attempt_reserve_memory_at: possible alignment bug");
a61af66fc99e Initial load
duke
parents:
diff changeset
2914 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2915 unmap_memory(requested_addr, bottom_overlap);
a61af66fc99e Initial load
duke
parents:
diff changeset
2916 size[i] = bytes - bottom_overlap;
a61af66fc99e Initial load
duke
parents:
diff changeset
2917 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
2918 size[i] = bytes;
a61af66fc99e Initial load
duke
parents:
diff changeset
2919 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2920 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2921 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2922 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2923
a61af66fc99e Initial load
duke
parents:
diff changeset
2924 // Give back the unused reserved pieces.
a61af66fc99e Initial load
duke
parents:
diff changeset
2925
a61af66fc99e Initial load
duke
parents:
diff changeset
2926 for (int j = 0; j < i; ++j) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2927 if (base[j] != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2928 unmap_memory(base[j], size[j]);
a61af66fc99e Initial load
duke
parents:
diff changeset
2929 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2930 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2931
a61af66fc99e Initial load
duke
parents:
diff changeset
2932 return (i < max_tries) ? requested_addr : NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
2933 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2934
a61af66fc99e Initial load
duke
parents:
diff changeset
2935 bool os::release_memory(char* addr, size_t bytes) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2936 size_t size = bytes;
a61af66fc99e Initial load
duke
parents:
diff changeset
2937 return munmap(addr, size) == 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
2938 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2939
a61af66fc99e Initial load
duke
parents:
diff changeset
2940 static bool solaris_mprotect(char* addr, size_t bytes, int prot) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2941 assert(addr == (char*)align_size_down((uintptr_t)addr, os::vm_page_size()),
a61af66fc99e Initial load
duke
parents:
diff changeset
2942 "addr must be page aligned");
a61af66fc99e Initial load
duke
parents:
diff changeset
2943 int retVal = mprotect(addr, bytes, prot);
a61af66fc99e Initial load
duke
parents:
diff changeset
2944 return retVal == 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
2945 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2946
a61af66fc99e Initial load
duke
parents:
diff changeset
2947 // Protect memory (make it read-only. (Used to pass readonly pages through
a61af66fc99e Initial load
duke
parents:
diff changeset
2948 // JNI GetArray<type>Elements with empty arrays.)
a61af66fc99e Initial load
duke
parents:
diff changeset
2949 bool os::protect_memory(char* addr, size_t bytes) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2950 return solaris_mprotect(addr, bytes, PROT_READ);
a61af66fc99e Initial load
duke
parents:
diff changeset
2951 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2952
a61af66fc99e Initial load
duke
parents:
diff changeset
2953 // guard_memory and unguard_memory only happens within stack guard pages.
a61af66fc99e Initial load
duke
parents:
diff changeset
2954 // Since ISM pertains only to the heap, guard and unguard memory should not
a61af66fc99e Initial load
duke
parents:
diff changeset
2955 /// happen with an ISM region.
a61af66fc99e Initial load
duke
parents:
diff changeset
2956 bool os::guard_memory(char* addr, size_t bytes) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2957 return solaris_mprotect(addr, bytes, PROT_NONE);
a61af66fc99e Initial load
duke
parents:
diff changeset
2958 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2959
a61af66fc99e Initial load
duke
parents:
diff changeset
2960 bool os::unguard_memory(char* addr, size_t bytes) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2961 return solaris_mprotect(addr, bytes, PROT_READ|PROT_WRITE|PROT_EXEC);
a61af66fc99e Initial load
duke
parents:
diff changeset
2962 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2963
a61af66fc99e Initial load
duke
parents:
diff changeset
2964 // Large page support
a61af66fc99e Initial load
duke
parents:
diff changeset
2965
a61af66fc99e Initial load
duke
parents:
diff changeset
2966 // UseLargePages is the master flag to enable/disable large page memory.
a61af66fc99e Initial load
duke
parents:
diff changeset
2967 // UseMPSS and UseISM are supported for compatibility reasons. Their combined
a61af66fc99e Initial load
duke
parents:
diff changeset
2968 // effects can be described in the following table:
a61af66fc99e Initial load
duke
parents:
diff changeset
2969 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2970 // UseLargePages UseMPSS UseISM
a61af66fc99e Initial load
duke
parents:
diff changeset
2971 // false * * => UseLargePages is the master switch, turning
a61af66fc99e Initial load
duke
parents:
diff changeset
2972 // it off will turn off both UseMPSS and
a61af66fc99e Initial load
duke
parents:
diff changeset
2973 // UseISM. VM will not use large page memory
a61af66fc99e Initial load
duke
parents:
diff changeset
2974 // regardless the settings of UseMPSS/UseISM.
a61af66fc99e Initial load
duke
parents:
diff changeset
2975 // true false false => Unless future Solaris provides other
a61af66fc99e Initial load
duke
parents:
diff changeset
2976 // mechanism to use large page memory, this
a61af66fc99e Initial load
duke
parents:
diff changeset
2977 // combination is equivalent to -UseLargePages,
a61af66fc99e Initial load
duke
parents:
diff changeset
2978 // VM will not use large page memory
a61af66fc99e Initial load
duke
parents:
diff changeset
2979 // true true false => JVM will use MPSS for large page memory.
a61af66fc99e Initial load
duke
parents:
diff changeset
2980 // This is the default behavior.
a61af66fc99e Initial load
duke
parents:
diff changeset
2981 // true false true => JVM will use ISM for large page memory.
a61af66fc99e Initial load
duke
parents:
diff changeset
2982 // true true true => JVM will use ISM if it is available.
a61af66fc99e Initial load
duke
parents:
diff changeset
2983 // Otherwise, JVM will fall back to MPSS.
a61af66fc99e Initial load
duke
parents:
diff changeset
2984 // Becaues ISM is now available on all
a61af66fc99e Initial load
duke
parents:
diff changeset
2985 // supported Solaris versions, this combination
a61af66fc99e Initial load
duke
parents:
diff changeset
2986 // is equivalent to +UseISM -UseMPSS.
a61af66fc99e Initial load
duke
parents:
diff changeset
2987
a61af66fc99e Initial load
duke
parents:
diff changeset
2988 typedef int (*getpagesizes_func_type) (size_t[], int);
a61af66fc99e Initial load
duke
parents:
diff changeset
2989 static size_t _large_page_size = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
2990
a61af66fc99e Initial load
duke
parents:
diff changeset
2991 bool os::Solaris::ism_sanity_check(bool warn, size_t * page_size) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2992 // x86 uses either 2M or 4M page, depending on whether PAE (Physical Address
a61af66fc99e Initial load
duke
parents:
diff changeset
2993 // Extensions) mode is enabled. AMD64/EM64T uses 2M page in 64bit mode. Sparc
a61af66fc99e Initial load
duke
parents:
diff changeset
2994 // can support multiple page sizes.
a61af66fc99e Initial load
duke
parents:
diff changeset
2995
a61af66fc99e Initial load
duke
parents:
diff changeset
2996 // Don't bother to probe page size because getpagesizes() comes with MPSS.
a61af66fc99e Initial load
duke
parents:
diff changeset
2997 // ISM is only recommended on old Solaris where there is no MPSS support.
a61af66fc99e Initial load
duke
parents:
diff changeset
2998 // Simply choose a conservative value as default.
a61af66fc99e Initial load
duke
parents:
diff changeset
2999 *page_size = LargePageSizeInBytes ? LargePageSizeInBytes :
a61af66fc99e Initial load
duke
parents:
diff changeset
3000 SPARC_ONLY(4 * M) IA32_ONLY(4 * M) AMD64_ONLY(2 * M);
a61af66fc99e Initial load
duke
parents:
diff changeset
3001
a61af66fc99e Initial load
duke
parents:
diff changeset
3002 // ISM is available on all supported Solaris versions
a61af66fc99e Initial load
duke
parents:
diff changeset
3003 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
3004 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3005
a61af66fc99e Initial load
duke
parents:
diff changeset
3006 // Insertion sort for small arrays (descending order).
a61af66fc99e Initial load
duke
parents:
diff changeset
3007 static void insertion_sort_descending(size_t* array, int len) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3008 for (int i = 0; i < len; i++) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3009 size_t val = array[i];
a61af66fc99e Initial load
duke
parents:
diff changeset
3010 for (size_t key = i; key > 0 && array[key - 1] < val; --key) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3011 size_t tmp = array[key];
a61af66fc99e Initial load
duke
parents:
diff changeset
3012 array[key] = array[key - 1];
a61af66fc99e Initial load
duke
parents:
diff changeset
3013 array[key - 1] = tmp;
a61af66fc99e Initial load
duke
parents:
diff changeset
3014 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3015 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3016 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3017
a61af66fc99e Initial load
duke
parents:
diff changeset
3018 bool os::Solaris::mpss_sanity_check(bool warn, size_t * page_size) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3019 getpagesizes_func_type getpagesizes_func =
a61af66fc99e Initial load
duke
parents:
diff changeset
3020 CAST_TO_FN_PTR(getpagesizes_func_type, dlsym(RTLD_DEFAULT, "getpagesizes"));
a61af66fc99e Initial load
duke
parents:
diff changeset
3021 if (getpagesizes_func == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3022 if (warn) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3023 warning("MPSS is not supported by the operating system.");
a61af66fc99e Initial load
duke
parents:
diff changeset
3024 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3025 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
3026 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3027
a61af66fc99e Initial load
duke
parents:
diff changeset
3028 const unsigned int usable_count = VM_Version::page_size_count();
a61af66fc99e Initial load
duke
parents:
diff changeset
3029 if (usable_count == 1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3030 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
3031 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3032
a61af66fc99e Initial load
duke
parents:
diff changeset
3033 // Fill the array of page sizes.
a61af66fc99e Initial load
duke
parents:
diff changeset
3034 int n = getpagesizes_func(_page_sizes, page_sizes_max);
a61af66fc99e Initial load
duke
parents:
diff changeset
3035 assert(n > 0, "Solaris bug?");
a61af66fc99e Initial load
duke
parents:
diff changeset
3036 if (n == page_sizes_max) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3037 // Add a sentinel value (necessary only if the array was completely filled
a61af66fc99e Initial load
duke
parents:
diff changeset
3038 // since it is static (zeroed at initialization)).
a61af66fc99e Initial load
duke
parents:
diff changeset
3039 _page_sizes[--n] = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3040 DEBUG_ONLY(warning("increase the size of the os::_page_sizes array.");)
a61af66fc99e Initial load
duke
parents:
diff changeset
3041 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3042 assert(_page_sizes[n] == 0, "missing sentinel");
a61af66fc99e Initial load
duke
parents:
diff changeset
3043
a61af66fc99e Initial load
duke
parents:
diff changeset
3044 if (n == 1) return false; // Only one page size available.
a61af66fc99e Initial load
duke
parents:
diff changeset
3045
a61af66fc99e Initial load
duke
parents:
diff changeset
3046 // Skip sizes larger than 4M (or LargePageSizeInBytes if it was set) and
a61af66fc99e Initial load
duke
parents:
diff changeset
3047 // select up to usable_count elements. First sort the array, find the first
a61af66fc99e Initial load
duke
parents:
diff changeset
3048 // acceptable value, then copy the usable sizes to the top of the array and
a61af66fc99e Initial load
duke
parents:
diff changeset
3049 // trim the rest. Make sure to include the default page size :-).
a61af66fc99e Initial load
duke
parents:
diff changeset
3050 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3051 // A better policy could get rid of the 4M limit by taking the sizes of the
a61af66fc99e Initial load
duke
parents:
diff changeset
3052 // important VM memory regions (java heap and possibly the code cache) into
a61af66fc99e Initial load
duke
parents:
diff changeset
3053 // account.
a61af66fc99e Initial load
duke
parents:
diff changeset
3054 insertion_sort_descending(_page_sizes, n);
a61af66fc99e Initial load
duke
parents:
diff changeset
3055 const size_t size_limit =
a61af66fc99e Initial load
duke
parents:
diff changeset
3056 FLAG_IS_DEFAULT(LargePageSizeInBytes) ? 4 * M : LargePageSizeInBytes;
a61af66fc99e Initial load
duke
parents:
diff changeset
3057 int beg;
a61af66fc99e Initial load
duke
parents:
diff changeset
3058 for (beg = 0; beg < n && _page_sizes[beg] > size_limit; ++beg) /* empty */ ;
a61af66fc99e Initial load
duke
parents:
diff changeset
3059 const int end = MIN2((int)usable_count, n) - 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
3060 for (int cur = 0; cur < end; ++cur, ++beg) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3061 _page_sizes[cur] = _page_sizes[beg];
a61af66fc99e Initial load
duke
parents:
diff changeset
3062 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3063 _page_sizes[end] = vm_page_size();
a61af66fc99e Initial load
duke
parents:
diff changeset
3064 _page_sizes[end + 1] = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3065
a61af66fc99e Initial load
duke
parents:
diff changeset
3066 if (_page_sizes[end] > _page_sizes[end - 1]) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3067 // Default page size is not the smallest; sort again.
a61af66fc99e Initial load
duke
parents:
diff changeset
3068 insertion_sort_descending(_page_sizes, end + 1);
a61af66fc99e Initial load
duke
parents:
diff changeset
3069 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3070 *page_size = _page_sizes[0];
a61af66fc99e Initial load
duke
parents:
diff changeset
3071
a61af66fc99e Initial load
duke
parents:
diff changeset
3072 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
3073 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3074
a61af66fc99e Initial load
duke
parents:
diff changeset
3075 bool os::large_page_init() {
a61af66fc99e Initial load
duke
parents:
diff changeset
3076 if (!UseLargePages) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3077 UseISM = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
3078 UseMPSS = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
3079 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
3080 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3081
a61af66fc99e Initial load
duke
parents:
diff changeset
3082 // print a warning if any large page related flag is specified on command line
a61af66fc99e Initial load
duke
parents:
diff changeset
3083 bool warn_on_failure = !FLAG_IS_DEFAULT(UseLargePages) ||
a61af66fc99e Initial load
duke
parents:
diff changeset
3084 !FLAG_IS_DEFAULT(UseISM) ||
a61af66fc99e Initial load
duke
parents:
diff changeset
3085 !FLAG_IS_DEFAULT(UseMPSS) ||
a61af66fc99e Initial load
duke
parents:
diff changeset
3086 !FLAG_IS_DEFAULT(LargePageSizeInBytes);
a61af66fc99e Initial load
duke
parents:
diff changeset
3087 UseISM = UseISM &&
a61af66fc99e Initial load
duke
parents:
diff changeset
3088 Solaris::ism_sanity_check(warn_on_failure, &_large_page_size);
a61af66fc99e Initial load
duke
parents:
diff changeset
3089 if (UseISM) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3090 // ISM disables MPSS to be compatible with old JDK behavior
a61af66fc99e Initial load
duke
parents:
diff changeset
3091 UseMPSS = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
3092 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3093
a61af66fc99e Initial load
duke
parents:
diff changeset
3094 UseMPSS = UseMPSS &&
a61af66fc99e Initial load
duke
parents:
diff changeset
3095 Solaris::mpss_sanity_check(warn_on_failure, &_large_page_size);
a61af66fc99e Initial load
duke
parents:
diff changeset
3096
a61af66fc99e Initial load
duke
parents:
diff changeset
3097 UseLargePages = UseISM || UseMPSS;
a61af66fc99e Initial load
duke
parents:
diff changeset
3098 return UseLargePages;
a61af66fc99e Initial load
duke
parents:
diff changeset
3099 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3100
a61af66fc99e Initial load
duke
parents:
diff changeset
3101 bool os::Solaris::set_mpss_range(caddr_t start, size_t bytes, size_t align) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3102 // Signal to OS that we want large pages for addresses
a61af66fc99e Initial load
duke
parents:
diff changeset
3103 // from addr, addr + bytes
a61af66fc99e Initial load
duke
parents:
diff changeset
3104 struct memcntl_mha mpss_struct;
a61af66fc99e Initial load
duke
parents:
diff changeset
3105 mpss_struct.mha_cmd = MHA_MAPSIZE_VA;
a61af66fc99e Initial load
duke
parents:
diff changeset
3106 mpss_struct.mha_pagesize = align;
a61af66fc99e Initial load
duke
parents:
diff changeset
3107 mpss_struct.mha_flags = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3108 if (memcntl(start, bytes, MC_HAT_ADVISE,
a61af66fc99e Initial load
duke
parents:
diff changeset
3109 (caddr_t) &mpss_struct, 0, 0) < 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3110 debug_only(warning("Attempt to use MPSS failed."));
a61af66fc99e Initial load
duke
parents:
diff changeset
3111 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
3112 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3113 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
3114 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3115
a61af66fc99e Initial load
duke
parents:
diff changeset
3116 char* os::reserve_memory_special(size_t bytes) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3117 assert(UseLargePages && UseISM, "only for ISM large pages");
a61af66fc99e Initial load
duke
parents:
diff changeset
3118
a61af66fc99e Initial load
duke
parents:
diff changeset
3119 size_t size = bytes;
a61af66fc99e Initial load
duke
parents:
diff changeset
3120 char* retAddr = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
3121 int shmid;
a61af66fc99e Initial load
duke
parents:
diff changeset
3122 key_t ismKey;
a61af66fc99e Initial load
duke
parents:
diff changeset
3123
a61af66fc99e Initial load
duke
parents:
diff changeset
3124 bool warn_on_failure = UseISM &&
a61af66fc99e Initial load
duke
parents:
diff changeset
3125 (!FLAG_IS_DEFAULT(UseLargePages) ||
a61af66fc99e Initial load
duke
parents:
diff changeset
3126 !FLAG_IS_DEFAULT(UseISM) ||
a61af66fc99e Initial load
duke
parents:
diff changeset
3127 !FLAG_IS_DEFAULT(LargePageSizeInBytes)
a61af66fc99e Initial load
duke
parents:
diff changeset
3128 );
a61af66fc99e Initial load
duke
parents:
diff changeset
3129 char msg[128];
a61af66fc99e Initial load
duke
parents:
diff changeset
3130
a61af66fc99e Initial load
duke
parents:
diff changeset
3131 ismKey = IPC_PRIVATE;
a61af66fc99e Initial load
duke
parents:
diff changeset
3132
a61af66fc99e Initial load
duke
parents:
diff changeset
3133 // Create a large shared memory region to attach to based on size.
a61af66fc99e Initial load
duke
parents:
diff changeset
3134 // Currently, size is the total size of the heap
a61af66fc99e Initial load
duke
parents:
diff changeset
3135 shmid = shmget(ismKey, size, SHM_R | SHM_W | IPC_CREAT);
a61af66fc99e Initial load
duke
parents:
diff changeset
3136 if (shmid == -1){
a61af66fc99e Initial load
duke
parents:
diff changeset
3137 if (warn_on_failure) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3138 jio_snprintf(msg, sizeof(msg), "Failed to reserve shared memory (errno = %d).", errno);
a61af66fc99e Initial load
duke
parents:
diff changeset
3139 warning(msg);
a61af66fc99e Initial load
duke
parents:
diff changeset
3140 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3141 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
3142 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3143
a61af66fc99e Initial load
duke
parents:
diff changeset
3144 // Attach to the region
a61af66fc99e Initial load
duke
parents:
diff changeset
3145 retAddr = (char *) shmat(shmid, 0, SHM_SHARE_MMU | SHM_R | SHM_W);
a61af66fc99e Initial load
duke
parents:
diff changeset
3146 int err = errno;
a61af66fc99e Initial load
duke
parents:
diff changeset
3147
a61af66fc99e Initial load
duke
parents:
diff changeset
3148 // Remove shmid. If shmat() is successful, the actual shared memory segment
a61af66fc99e Initial load
duke
parents:
diff changeset
3149 // will be deleted when it's detached by shmdt() or when the process
a61af66fc99e Initial load
duke
parents:
diff changeset
3150 // terminates. If shmat() is not successful this will remove the shared
a61af66fc99e Initial load
duke
parents:
diff changeset
3151 // segment immediately.
a61af66fc99e Initial load
duke
parents:
diff changeset
3152 shmctl(shmid, IPC_RMID, NULL);
a61af66fc99e Initial load
duke
parents:
diff changeset
3153
a61af66fc99e Initial load
duke
parents:
diff changeset
3154 if (retAddr == (char *) -1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3155 if (warn_on_failure) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3156 jio_snprintf(msg, sizeof(msg), "Failed to attach shared memory (errno = %d).", err);
a61af66fc99e Initial load
duke
parents:
diff changeset
3157 warning(msg);
a61af66fc99e Initial load
duke
parents:
diff changeset
3158 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3159 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
3160 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3161
a61af66fc99e Initial load
duke
parents:
diff changeset
3162 return retAddr;
a61af66fc99e Initial load
duke
parents:
diff changeset
3163 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3164
a61af66fc99e Initial load
duke
parents:
diff changeset
3165 bool os::release_memory_special(char* base, size_t bytes) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3166 // detaching the SHM segment will also delete it, see reserve_memory_special()
a61af66fc99e Initial load
duke
parents:
diff changeset
3167 int rslt = shmdt(base);
a61af66fc99e Initial load
duke
parents:
diff changeset
3168 return rslt == 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3169 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3170
a61af66fc99e Initial load
duke
parents:
diff changeset
3171 size_t os::large_page_size() {
a61af66fc99e Initial load
duke
parents:
diff changeset
3172 return _large_page_size;
a61af66fc99e Initial load
duke
parents:
diff changeset
3173 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3174
a61af66fc99e Initial load
duke
parents:
diff changeset
3175 // MPSS allows application to commit large page memory on demand; with ISM
a61af66fc99e Initial load
duke
parents:
diff changeset
3176 // the entire memory region must be allocated as shared memory.
a61af66fc99e Initial load
duke
parents:
diff changeset
3177 bool os::can_commit_large_page_memory() {
a61af66fc99e Initial load
duke
parents:
diff changeset
3178 return UseISM ? false : true;
a61af66fc99e Initial load
duke
parents:
diff changeset
3179 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3180
a61af66fc99e Initial load
duke
parents:
diff changeset
3181 static int os_sleep(jlong millis, bool interruptible) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3182 const jlong limit = INT_MAX;
a61af66fc99e Initial load
duke
parents:
diff changeset
3183 jlong prevtime;
a61af66fc99e Initial load
duke
parents:
diff changeset
3184 int res;
a61af66fc99e Initial load
duke
parents:
diff changeset
3185
a61af66fc99e Initial load
duke
parents:
diff changeset
3186 while (millis > limit) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3187 if ((res = os_sleep(limit, interruptible)) != OS_OK)
a61af66fc99e Initial load
duke
parents:
diff changeset
3188 return res;
a61af66fc99e Initial load
duke
parents:
diff changeset
3189 millis -= limit;
a61af66fc99e Initial load
duke
parents:
diff changeset
3190 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3191
a61af66fc99e Initial load
duke
parents:
diff changeset
3192 // Restart interrupted polls with new parameters until the proper delay
a61af66fc99e Initial load
duke
parents:
diff changeset
3193 // has been completed.
a61af66fc99e Initial load
duke
parents:
diff changeset
3194
a61af66fc99e Initial load
duke
parents:
diff changeset
3195 prevtime = getTimeMillis();
a61af66fc99e Initial load
duke
parents:
diff changeset
3196
a61af66fc99e Initial load
duke
parents:
diff changeset
3197 while (millis > 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3198 jlong newtime;
a61af66fc99e Initial load
duke
parents:
diff changeset
3199
a61af66fc99e Initial load
duke
parents:
diff changeset
3200 if (!interruptible) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3201 // Following assert fails for os::yield_all:
a61af66fc99e Initial load
duke
parents:
diff changeset
3202 // assert(!thread->is_Java_thread(), "must not be java thread");
a61af66fc99e Initial load
duke
parents:
diff changeset
3203 res = poll(NULL, 0, millis);
a61af66fc99e Initial load
duke
parents:
diff changeset
3204 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
3205 JavaThread *jt = JavaThread::current();
a61af66fc99e Initial load
duke
parents:
diff changeset
3206
a61af66fc99e Initial load
duke
parents:
diff changeset
3207 INTERRUPTIBLE_NORESTART_VM_ALWAYS(poll(NULL, 0, millis), res, jt,
a61af66fc99e Initial load
duke
parents:
diff changeset
3208 os::Solaris::clear_interrupted);
a61af66fc99e Initial load
duke
parents:
diff changeset
3209 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3210
a61af66fc99e Initial load
duke
parents:
diff changeset
3211 // INTERRUPTIBLE_NORESTART_VM_ALWAYS returns res == OS_INTRPT for
a61af66fc99e Initial load
duke
parents:
diff changeset
3212 // thread.Interrupt.
a61af66fc99e Initial load
duke
parents:
diff changeset
3213
a61af66fc99e Initial load
duke
parents:
diff changeset
3214 if((res == OS_ERR) && (errno == EINTR)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3215 newtime = getTimeMillis();
a61af66fc99e Initial load
duke
parents:
diff changeset
3216 assert(newtime >= prevtime, "time moving backwards");
a61af66fc99e Initial load
duke
parents:
diff changeset
3217 /* Doing prevtime and newtime in microseconds doesn't help precision,
a61af66fc99e Initial load
duke
parents:
diff changeset
3218 and trying to round up to avoid lost milliseconds can result in a
a61af66fc99e Initial load
duke
parents:
diff changeset
3219 too-short delay. */
a61af66fc99e Initial load
duke
parents:
diff changeset
3220 millis -= newtime - prevtime;
a61af66fc99e Initial load
duke
parents:
diff changeset
3221 if(millis <= 0)
a61af66fc99e Initial load
duke
parents:
diff changeset
3222 return OS_OK;
a61af66fc99e Initial load
duke
parents:
diff changeset
3223 prevtime = newtime;
a61af66fc99e Initial load
duke
parents:
diff changeset
3224 } else
a61af66fc99e Initial load
duke
parents:
diff changeset
3225 return res;
a61af66fc99e Initial load
duke
parents:
diff changeset
3226 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3227
a61af66fc99e Initial load
duke
parents:
diff changeset
3228 return OS_OK;
a61af66fc99e Initial load
duke
parents:
diff changeset
3229 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3230
a61af66fc99e Initial load
duke
parents:
diff changeset
3231 // Read calls from inside the vm need to perform state transitions
a61af66fc99e Initial load
duke
parents:
diff changeset
3232 size_t os::read(int fd, void *buf, unsigned int nBytes) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3233 INTERRUPTIBLE_RETURN_INT_VM(::read(fd, buf, nBytes), os::Solaris::clear_interrupted);
a61af66fc99e Initial load
duke
parents:
diff changeset
3234 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3235
a61af66fc99e Initial load
duke
parents:
diff changeset
3236 int os::sleep(Thread* thread, jlong millis, bool interruptible) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3237 assert(thread == Thread::current(), "thread consistency check");
a61af66fc99e Initial load
duke
parents:
diff changeset
3238
a61af66fc99e Initial load
duke
parents:
diff changeset
3239 // TODO-FIXME: this should be removed.
a61af66fc99e Initial load
duke
parents:
diff changeset
3240 // On Solaris machines (especially 2.5.1) we found that sometimes the VM gets into a live lock
a61af66fc99e Initial load
duke
parents:
diff changeset
3241 // situation with a JavaThread being starved out of a lwp. The kernel doesn't seem to generate
a61af66fc99e Initial load
duke
parents:
diff changeset
3242 // a SIGWAITING signal which would enable the threads library to create a new lwp for the starving
a61af66fc99e Initial load
duke
parents:
diff changeset
3243 // thread. We suspect that because the Watcher thread keeps waking up at periodic intervals the kernel
a61af66fc99e Initial load
duke
parents:
diff changeset
3244 // is fooled into believing that the system is making progress. In the code below we block the
a61af66fc99e Initial load
duke
parents:
diff changeset
3245 // the watcher thread while safepoint is in progress so that it would not appear as though the
a61af66fc99e Initial load
duke
parents:
diff changeset
3246 // system is making progress.
a61af66fc99e Initial load
duke
parents:
diff changeset
3247 if (!Solaris::T2_libthread() &&
a61af66fc99e Initial load
duke
parents:
diff changeset
3248 thread->is_Watcher_thread() && SafepointSynchronize::is_synchronizing() && !Arguments::has_profile()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3249 // We now try to acquire the threads lock. Since this lock is held by the VM thread during
a61af66fc99e Initial load
duke
parents:
diff changeset
3250 // the entire safepoint, the watcher thread will line up here during the safepoint.
a61af66fc99e Initial load
duke
parents:
diff changeset
3251 Threads_lock->lock_without_safepoint_check();
a61af66fc99e Initial load
duke
parents:
diff changeset
3252 Threads_lock->unlock();
a61af66fc99e Initial load
duke
parents:
diff changeset
3253 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3254
a61af66fc99e Initial load
duke
parents:
diff changeset
3255 if (thread->is_Java_thread()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3256 // This is a JavaThread so we honor the _thread_blocked protocol
a61af66fc99e Initial load
duke
parents:
diff changeset
3257 // even for sleeps of 0 milliseconds. This was originally done
a61af66fc99e Initial load
duke
parents:
diff changeset
3258 // as a workaround for bug 4338139. However, now we also do it
a61af66fc99e Initial load
duke
parents:
diff changeset
3259 // to honor the suspend-equivalent protocol.
a61af66fc99e Initial load
duke
parents:
diff changeset
3260
a61af66fc99e Initial load
duke
parents:
diff changeset
3261 JavaThread *jt = (JavaThread *) thread;
a61af66fc99e Initial load
duke
parents:
diff changeset
3262 ThreadBlockInVM tbivm(jt);
a61af66fc99e Initial load
duke
parents:
diff changeset
3263
a61af66fc99e Initial load
duke
parents:
diff changeset
3264 jt->set_suspend_equivalent();
a61af66fc99e Initial load
duke
parents:
diff changeset
3265 // cleared by handle_special_suspend_equivalent_condition() or
a61af66fc99e Initial load
duke
parents:
diff changeset
3266 // java_suspend_self() via check_and_wait_while_suspended()
a61af66fc99e Initial load
duke
parents:
diff changeset
3267
a61af66fc99e Initial load
duke
parents:
diff changeset
3268 int ret_code;
a61af66fc99e Initial load
duke
parents:
diff changeset
3269 if (millis <= 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3270 thr_yield();
a61af66fc99e Initial load
duke
parents:
diff changeset
3271 ret_code = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3272 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
3273 // The original sleep() implementation did not create an
a61af66fc99e Initial load
duke
parents:
diff changeset
3274 // OSThreadWaitState helper for sleeps of 0 milliseconds.
a61af66fc99e Initial load
duke
parents:
diff changeset
3275 // I'm preserving that decision for now.
a61af66fc99e Initial load
duke
parents:
diff changeset
3276 OSThreadWaitState osts(jt->osthread(), false /* not Object.wait() */);
a61af66fc99e Initial load
duke
parents:
diff changeset
3277
a61af66fc99e Initial load
duke
parents:
diff changeset
3278 ret_code = os_sleep(millis, interruptible);
a61af66fc99e Initial load
duke
parents:
diff changeset
3279 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3280
a61af66fc99e Initial load
duke
parents:
diff changeset
3281 // were we externally suspended while we were waiting?
a61af66fc99e Initial load
duke
parents:
diff changeset
3282 jt->check_and_wait_while_suspended();
a61af66fc99e Initial load
duke
parents:
diff changeset
3283
a61af66fc99e Initial load
duke
parents:
diff changeset
3284 return ret_code;
a61af66fc99e Initial load
duke
parents:
diff changeset
3285 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3286
a61af66fc99e Initial load
duke
parents:
diff changeset
3287 // non-JavaThread from this point on:
a61af66fc99e Initial load
duke
parents:
diff changeset
3288
a61af66fc99e Initial load
duke
parents:
diff changeset
3289 if (millis <= 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3290 thr_yield();
a61af66fc99e Initial load
duke
parents:
diff changeset
3291 return 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3292 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3293
a61af66fc99e Initial load
duke
parents:
diff changeset
3294 OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */);
a61af66fc99e Initial load
duke
parents:
diff changeset
3295
a61af66fc99e Initial load
duke
parents:
diff changeset
3296 return os_sleep(millis, interruptible);
a61af66fc99e Initial load
duke
parents:
diff changeset
3297 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3298
a61af66fc99e Initial load
duke
parents:
diff changeset
3299 int os::naked_sleep() {
a61af66fc99e Initial load
duke
parents:
diff changeset
3300 // %% make the sleep time an integer flag. for now use 1 millisec.
a61af66fc99e Initial load
duke
parents:
diff changeset
3301 return os_sleep(1, false);
a61af66fc99e Initial load
duke
parents:
diff changeset
3302 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3303
a61af66fc99e Initial load
duke
parents:
diff changeset
3304 // Sleep forever; naked call to OS-specific sleep; use with CAUTION
a61af66fc99e Initial load
duke
parents:
diff changeset
3305 void os::infinite_sleep() {
a61af66fc99e Initial load
duke
parents:
diff changeset
3306 while (true) { // sleep forever ...
a61af66fc99e Initial load
duke
parents:
diff changeset
3307 ::sleep(100); // ... 100 seconds at a time
a61af66fc99e Initial load
duke
parents:
diff changeset
3308 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3309 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3310
a61af66fc99e Initial load
duke
parents:
diff changeset
3311 // Used to convert frequent JVM_Yield() to nops
a61af66fc99e Initial load
duke
parents:
diff changeset
3312 bool os::dont_yield() {
a61af66fc99e Initial load
duke
parents:
diff changeset
3313 if (DontYieldALot) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3314 static hrtime_t last_time = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3315 hrtime_t diff = getTimeNanos() - last_time;
a61af66fc99e Initial load
duke
parents:
diff changeset
3316
a61af66fc99e Initial load
duke
parents:
diff changeset
3317 if (diff < DontYieldALotInterval * 1000000)
a61af66fc99e Initial load
duke
parents:
diff changeset
3318 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
3319
a61af66fc99e Initial load
duke
parents:
diff changeset
3320 last_time += diff;
a61af66fc99e Initial load
duke
parents:
diff changeset
3321
a61af66fc99e Initial load
duke
parents:
diff changeset
3322 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
3323 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3324 else {
a61af66fc99e Initial load
duke
parents:
diff changeset
3325 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
3326 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3327 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3328
a61af66fc99e Initial load
duke
parents:
diff changeset
3329 // Caveat: Solaris os::yield() causes a thread-state transition whereas
a61af66fc99e Initial load
duke
parents:
diff changeset
3330 // the linux and win32 implementations do not. This should be checked.
a61af66fc99e Initial load
duke
parents:
diff changeset
3331
a61af66fc99e Initial load
duke
parents:
diff changeset
3332 void os::yield() {
a61af66fc99e Initial load
duke
parents:
diff changeset
3333 // Yields to all threads with same or greater priority
a61af66fc99e Initial load
duke
parents:
diff changeset
3334 os::sleep(Thread::current(), 0, false);
a61af66fc99e Initial load
duke
parents:
diff changeset
3335 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3336
a61af66fc99e Initial load
duke
parents:
diff changeset
3337 // Note that yield semantics are defined by the scheduling class to which
a61af66fc99e Initial load
duke
parents:
diff changeset
3338 // the thread currently belongs. Typically, yield will _not yield to
a61af66fc99e Initial load
duke
parents:
diff changeset
3339 // other equal or higher priority threads that reside on the dispatch queues
a61af66fc99e Initial load
duke
parents:
diff changeset
3340 // of other CPUs.
a61af66fc99e Initial load
duke
parents:
diff changeset
3341
a61af66fc99e Initial load
duke
parents:
diff changeset
3342 os::YieldResult os::NakedYield() { thr_yield(); return os::YIELD_UNKNOWN; }
a61af66fc99e Initial load
duke
parents:
diff changeset
3343
a61af66fc99e Initial load
duke
parents:
diff changeset
3344
a61af66fc99e Initial load
duke
parents:
diff changeset
3345 // On Solaris we found that yield_all doesn't always yield to all other threads.
a61af66fc99e Initial load
duke
parents:
diff changeset
3346 // There have been cases where there is a thread ready to execute but it doesn't
a61af66fc99e Initial load
duke
parents:
diff changeset
3347 // get an lwp as the VM thread continues to spin with sleeps of 1 millisecond.
a61af66fc99e Initial load
duke
parents:
diff changeset
3348 // The 1 millisecond wait doesn't seem long enough for the kernel to issue a
a61af66fc99e Initial load
duke
parents:
diff changeset
3349 // SIGWAITING signal which will cause a new lwp to be created. So we count the
a61af66fc99e Initial load
duke
parents:
diff changeset
3350 // number of times yield_all is called in the one loop and increase the sleep
a61af66fc99e Initial load
duke
parents:
diff changeset
3351 // time after 8 attempts. If this fails too we increase the concurrency level
a61af66fc99e Initial load
duke
parents:
diff changeset
3352 // so that the starving thread would get an lwp
a61af66fc99e Initial load
duke
parents:
diff changeset
3353
a61af66fc99e Initial load
duke
parents:
diff changeset
3354 void os::yield_all(int attempts) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3355 // Yields to all threads, including threads with lower priorities
a61af66fc99e Initial load
duke
parents:
diff changeset
3356 if (attempts == 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3357 os::sleep(Thread::current(), 1, false);
a61af66fc99e Initial load
duke
parents:
diff changeset
3358 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
3359 int iterations = attempts % 30;
a61af66fc99e Initial load
duke
parents:
diff changeset
3360 if (iterations == 0 && !os::Solaris::T2_libthread()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3361 // thr_setconcurrency and _getconcurrency make sense only under T1.
a61af66fc99e Initial load
duke
parents:
diff changeset
3362 int noofLWPS = thr_getconcurrency();
a61af66fc99e Initial load
duke
parents:
diff changeset
3363 if (noofLWPS < (Threads::number_of_threads() + 2)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3364 thr_setconcurrency(thr_getconcurrency() + 1);
a61af66fc99e Initial load
duke
parents:
diff changeset
3365 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3366 } else if (iterations < 25) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3367 os::sleep(Thread::current(), 1, false);
a61af66fc99e Initial load
duke
parents:
diff changeset
3368 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
3369 os::sleep(Thread::current(), 10, false);
a61af66fc99e Initial load
duke
parents:
diff changeset
3370 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3371 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3372 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3373
a61af66fc99e Initial load
duke
parents:
diff changeset
3374 // Called from the tight loops to possibly influence time-sharing heuristics
a61af66fc99e Initial load
duke
parents:
diff changeset
3375 void os::loop_breaker(int attempts) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3376 os::yield_all(attempts);
a61af66fc99e Initial load
duke
parents:
diff changeset
3377 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3378
a61af66fc99e Initial load
duke
parents:
diff changeset
3379
a61af66fc99e Initial load
duke
parents:
diff changeset
3380 // Interface for setting lwp priorities. If we are using T2 libthread,
a61af66fc99e Initial load
duke
parents:
diff changeset
3381 // which forces the use of BoundThreads or we manually set UseBoundThreads,
a61af66fc99e Initial load
duke
parents:
diff changeset
3382 // all of our threads will be assigned to real lwp's. Using the thr_setprio
a61af66fc99e Initial load
duke
parents:
diff changeset
3383 // function is meaningless in this mode so we must adjust the real lwp's priority
a61af66fc99e Initial load
duke
parents:
diff changeset
3384 // The routines below implement the getting and setting of lwp priorities.
a61af66fc99e Initial load
duke
parents:
diff changeset
3385 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3386 // Note: There are three priority scales used on Solaris. Java priotities
a61af66fc99e Initial load
duke
parents:
diff changeset
3387 // which range from 1 to 10, libthread "thr_setprio" scale which range
a61af66fc99e Initial load
duke
parents:
diff changeset
3388 // from 0 to 127, and the current scheduling class of the process we
a61af66fc99e Initial load
duke
parents:
diff changeset
3389 // are running in. This is typically from -60 to +60.
a61af66fc99e Initial load
duke
parents:
diff changeset
3390 // The setting of the lwp priorities in done after a call to thr_setprio
a61af66fc99e Initial load
duke
parents:
diff changeset
3391 // so Java priorities are mapped to libthread priorities and we map from
a61af66fc99e Initial load
duke
parents:
diff changeset
3392 // the latter to lwp priorities. We don't keep priorities stored in
a61af66fc99e Initial load
duke
parents:
diff changeset
3393 // Java priorities since some of our worker threads want to set priorities
a61af66fc99e Initial load
duke
parents:
diff changeset
3394 // higher than all Java threads.
a61af66fc99e Initial load
duke
parents:
diff changeset
3395 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3396 // For related information:
a61af66fc99e Initial load
duke
parents:
diff changeset
3397 // (1) man -s 2 priocntl
a61af66fc99e Initial load
duke
parents:
diff changeset
3398 // (2) man -s 4 priocntl
a61af66fc99e Initial load
duke
parents:
diff changeset
3399 // (3) man dispadmin
a61af66fc99e Initial load
duke
parents:
diff changeset
3400 // = librt.so
a61af66fc99e Initial load
duke
parents:
diff changeset
3401 // = libthread/common/rtsched.c - thrp_setlwpprio().
a61af66fc99e Initial load
duke
parents:
diff changeset
3402 // = ps -cL <pid> ... to validate priority.
a61af66fc99e Initial load
duke
parents:
diff changeset
3403 // = sched_get_priority_min and _max
a61af66fc99e Initial load
duke
parents:
diff changeset
3404 // pthread_create
a61af66fc99e Initial load
duke
parents:
diff changeset
3405 // sched_setparam
a61af66fc99e Initial load
duke
parents:
diff changeset
3406 // pthread_setschedparam
a61af66fc99e Initial load
duke
parents:
diff changeset
3407 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3408 // Assumptions:
a61af66fc99e Initial load
duke
parents:
diff changeset
3409 // + We assume that all threads in the process belong to the same
a61af66fc99e Initial load
duke
parents:
diff changeset
3410 // scheduling class. IE. an homogenous process.
a61af66fc99e Initial load
duke
parents:
diff changeset
3411 // + Must be root or in IA group to change change "interactive" attribute.
a61af66fc99e Initial load
duke
parents:
diff changeset
3412 // Priocntl() will fail silently. The only indication of failure is when
a61af66fc99e Initial load
duke
parents:
diff changeset
3413 // we read-back the value and notice that it hasn't changed.
a61af66fc99e Initial load
duke
parents:
diff changeset
3414 // + Interactive threads enter the runq at the head, non-interactive at the tail.
a61af66fc99e Initial load
duke
parents:
diff changeset
3415 // + For RT, change timeslice as well. Invariant:
a61af66fc99e Initial load
duke
parents:
diff changeset
3416 // constant "priority integral"
a61af66fc99e Initial load
duke
parents:
diff changeset
3417 // Konst == TimeSlice * (60-Priority)
a61af66fc99e Initial load
duke
parents:
diff changeset
3418 // Given a priority, compute appropriate timeslice.
a61af66fc99e Initial load
duke
parents:
diff changeset
3419 // + Higher numerical values have higher priority.
a61af66fc99e Initial load
duke
parents:
diff changeset
3420
a61af66fc99e Initial load
duke
parents:
diff changeset
3421 // sched class attributes
a61af66fc99e Initial load
duke
parents:
diff changeset
3422 typedef struct {
a61af66fc99e Initial load
duke
parents:
diff changeset
3423 int schedPolicy; // classID
a61af66fc99e Initial load
duke
parents:
diff changeset
3424 int maxPrio;
a61af66fc99e Initial load
duke
parents:
diff changeset
3425 int minPrio;
a61af66fc99e Initial load
duke
parents:
diff changeset
3426 } SchedInfo;
a61af66fc99e Initial load
duke
parents:
diff changeset
3427
a61af66fc99e Initial load
duke
parents:
diff changeset
3428
a61af66fc99e Initial load
duke
parents:
diff changeset
3429 static SchedInfo tsLimits, iaLimits, rtLimits;
a61af66fc99e Initial load
duke
parents:
diff changeset
3430
a61af66fc99e Initial load
duke
parents:
diff changeset
3431 #ifdef ASSERT
a61af66fc99e Initial load
duke
parents:
diff changeset
3432 static int ReadBackValidate = 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
3433 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
3434 static int myClass = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3435 static int myMin = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3436 static int myMax = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3437 static int myCur = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3438 static bool priocntl_enable = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
3439
a61af66fc99e Initial load
duke
parents:
diff changeset
3440
a61af66fc99e Initial load
duke
parents:
diff changeset
3441 // Call the version of priocntl suitable for all supported versions
a61af66fc99e Initial load
duke
parents:
diff changeset
3442 // of Solaris. We need to call through this wrapper so that we can
a61af66fc99e Initial load
duke
parents:
diff changeset
3443 // build on Solaris 9 and run on Solaris 8, 9 and 10.
a61af66fc99e Initial load
duke
parents:
diff changeset
3444 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3445 // This code should be removed if we ever stop supporting Solaris 8
a61af66fc99e Initial load
duke
parents:
diff changeset
3446 // and earlier releases.
a61af66fc99e Initial load
duke
parents:
diff changeset
3447
a61af66fc99e Initial load
duke
parents:
diff changeset
3448 static long priocntl_stub(int pcver, idtype_t idtype, id_t id, int cmd, caddr_t arg);
a61af66fc99e Initial load
duke
parents:
diff changeset
3449 typedef long (*priocntl_type)(int pcver, idtype_t idtype, id_t id, int cmd, caddr_t arg);
a61af66fc99e Initial load
duke
parents:
diff changeset
3450 static priocntl_type priocntl_ptr = priocntl_stub;
a61af66fc99e Initial load
duke
parents:
diff changeset
3451
a61af66fc99e Initial load
duke
parents:
diff changeset
3452 // Stub to set the value of the real pointer, and then call the real
a61af66fc99e Initial load
duke
parents:
diff changeset
3453 // function.
a61af66fc99e Initial load
duke
parents:
diff changeset
3454
a61af66fc99e Initial load
duke
parents:
diff changeset
3455 static long priocntl_stub(int pcver, idtype_t idtype, id_t id, int cmd, caddr_t arg) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3456 // Try Solaris 8- name only.
a61af66fc99e Initial load
duke
parents:
diff changeset
3457 priocntl_type tmp = (priocntl_type)dlsym(RTLD_DEFAULT, "__priocntl");
a61af66fc99e Initial load
duke
parents:
diff changeset
3458 guarantee(tmp != NULL, "priocntl function not found.");
a61af66fc99e Initial load
duke
parents:
diff changeset
3459 priocntl_ptr = tmp;
a61af66fc99e Initial load
duke
parents:
diff changeset
3460 return (*priocntl_ptr)(PC_VERSION, idtype, id, cmd, arg);
a61af66fc99e Initial load
duke
parents:
diff changeset
3461 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3462
a61af66fc99e Initial load
duke
parents:
diff changeset
3463
a61af66fc99e Initial load
duke
parents:
diff changeset
3464 // lwp_priocntl_init
a61af66fc99e Initial load
duke
parents:
diff changeset
3465 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3466 // Try to determine the priority scale for our process.
a61af66fc99e Initial load
duke
parents:
diff changeset
3467 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3468 // Return errno or 0 if OK.
a61af66fc99e Initial load
duke
parents:
diff changeset
3469 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3470 static
a61af66fc99e Initial load
duke
parents:
diff changeset
3471 int lwp_priocntl_init ()
a61af66fc99e Initial load
duke
parents:
diff changeset
3472 {
a61af66fc99e Initial load
duke
parents:
diff changeset
3473 int rslt;
a61af66fc99e Initial load
duke
parents:
diff changeset
3474 pcinfo_t ClassInfo;
a61af66fc99e Initial load
duke
parents:
diff changeset
3475 pcparms_t ParmInfo;
a61af66fc99e Initial load
duke
parents:
diff changeset
3476 int i;
a61af66fc99e Initial load
duke
parents:
diff changeset
3477
a61af66fc99e Initial load
duke
parents:
diff changeset
3478 if (!UseThreadPriorities) return 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3479
a61af66fc99e Initial load
duke
parents:
diff changeset
3480 // We are using Bound threads, we need to determine our priority ranges
a61af66fc99e Initial load
duke
parents:
diff changeset
3481 if (os::Solaris::T2_libthread() || UseBoundThreads) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3482 // If ThreadPriorityPolicy is 1, switch tables
a61af66fc99e Initial load
duke
parents:
diff changeset
3483 if (ThreadPriorityPolicy == 1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3484 for (i = 0 ; i < MaxPriority+1; i++)
a61af66fc99e Initial load
duke
parents:
diff changeset
3485 os::java_to_os_priority[i] = prio_policy1[i];
a61af66fc99e Initial load
duke
parents:
diff changeset
3486 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3487 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3488 // Not using Bound Threads, set to ThreadPolicy 1
a61af66fc99e Initial load
duke
parents:
diff changeset
3489 else {
a61af66fc99e Initial load
duke
parents:
diff changeset
3490 for ( i = 0 ; i < MaxPriority+1; i++ ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3491 os::java_to_os_priority[i] = prio_policy1[i];
a61af66fc99e Initial load
duke
parents:
diff changeset
3492 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3493 return 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3494 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3495
a61af66fc99e Initial load
duke
parents:
diff changeset
3496
a61af66fc99e Initial load
duke
parents:
diff changeset
3497 // Get IDs for a set of well-known scheduling classes.
a61af66fc99e Initial load
duke
parents:
diff changeset
3498 // TODO-FIXME: GETCLINFO returns the current # of classes in the
a61af66fc99e Initial load
duke
parents:
diff changeset
3499 // the system. We should have a loop that iterates over the
a61af66fc99e Initial load
duke
parents:
diff changeset
3500 // classID values, which are known to be "small" integers.
a61af66fc99e Initial load
duke
parents:
diff changeset
3501
a61af66fc99e Initial load
duke
parents:
diff changeset
3502 strcpy(ClassInfo.pc_clname, "TS");
a61af66fc99e Initial load
duke
parents:
diff changeset
3503 ClassInfo.pc_cid = -1;
a61af66fc99e Initial load
duke
parents:
diff changeset
3504 rslt = (*priocntl_ptr)(PC_VERSION, P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo);
a61af66fc99e Initial load
duke
parents:
diff changeset
3505 if (rslt < 0) return errno;
a61af66fc99e Initial load
duke
parents:
diff changeset
3506 assert(ClassInfo.pc_cid != -1, "cid for TS class is -1");
a61af66fc99e Initial load
duke
parents:
diff changeset
3507 tsLimits.schedPolicy = ClassInfo.pc_cid;
a61af66fc99e Initial load
duke
parents:
diff changeset
3508 tsLimits.maxPrio = ((tsinfo_t*)ClassInfo.pc_clinfo)->ts_maxupri;
a61af66fc99e Initial load
duke
parents:
diff changeset
3509 tsLimits.minPrio = -tsLimits.maxPrio;
a61af66fc99e Initial load
duke
parents:
diff changeset
3510
a61af66fc99e Initial load
duke
parents:
diff changeset
3511 strcpy(ClassInfo.pc_clname, "IA");
a61af66fc99e Initial load
duke
parents:
diff changeset
3512 ClassInfo.pc_cid = -1;
a61af66fc99e Initial load
duke
parents:
diff changeset
3513 rslt = (*priocntl_ptr)(PC_VERSION, P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo);
a61af66fc99e Initial load
duke
parents:
diff changeset
3514 if (rslt < 0) return errno;
a61af66fc99e Initial load
duke
parents:
diff changeset
3515 assert(ClassInfo.pc_cid != -1, "cid for IA class is -1");
a61af66fc99e Initial load
duke
parents:
diff changeset
3516 iaLimits.schedPolicy = ClassInfo.pc_cid;
a61af66fc99e Initial load
duke
parents:
diff changeset
3517 iaLimits.maxPrio = ((iainfo_t*)ClassInfo.pc_clinfo)->ia_maxupri;
a61af66fc99e Initial load
duke
parents:
diff changeset
3518 iaLimits.minPrio = -iaLimits.maxPrio;
a61af66fc99e Initial load
duke
parents:
diff changeset
3519
a61af66fc99e Initial load
duke
parents:
diff changeset
3520 strcpy(ClassInfo.pc_clname, "RT");
a61af66fc99e Initial load
duke
parents:
diff changeset
3521 ClassInfo.pc_cid = -1;
a61af66fc99e Initial load
duke
parents:
diff changeset
3522 rslt = (*priocntl_ptr)(PC_VERSION, P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo);
a61af66fc99e Initial load
duke
parents:
diff changeset
3523 if (rslt < 0) return errno;
a61af66fc99e Initial load
duke
parents:
diff changeset
3524 assert(ClassInfo.pc_cid != -1, "cid for RT class is -1");
a61af66fc99e Initial load
duke
parents:
diff changeset
3525 rtLimits.schedPolicy = ClassInfo.pc_cid;
a61af66fc99e Initial load
duke
parents:
diff changeset
3526 rtLimits.maxPrio = ((rtinfo_t*)ClassInfo.pc_clinfo)->rt_maxpri;
a61af66fc99e Initial load
duke
parents:
diff changeset
3527 rtLimits.minPrio = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3528
a61af66fc99e Initial load
duke
parents:
diff changeset
3529
a61af66fc99e Initial load
duke
parents:
diff changeset
3530 // Query our "current" scheduling class.
a61af66fc99e Initial load
duke
parents:
diff changeset
3531 // This will normally be IA,TS or, rarely, RT.
a61af66fc99e Initial load
duke
parents:
diff changeset
3532 memset (&ParmInfo, 0, sizeof(ParmInfo));
a61af66fc99e Initial load
duke
parents:
diff changeset
3533 ParmInfo.pc_cid = PC_CLNULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
3534 rslt = (*priocntl_ptr) (PC_VERSION, P_PID, P_MYID, PC_GETPARMS, (caddr_t)&ParmInfo );
a61af66fc99e Initial load
duke
parents:
diff changeset
3535 if ( rslt < 0 ) return errno;
a61af66fc99e Initial load
duke
parents:
diff changeset
3536 myClass = ParmInfo.pc_cid;
a61af66fc99e Initial load
duke
parents:
diff changeset
3537
a61af66fc99e Initial load
duke
parents:
diff changeset
3538 // We now know our scheduling classId, get specific information
a61af66fc99e Initial load
duke
parents:
diff changeset
3539 // the class.
a61af66fc99e Initial load
duke
parents:
diff changeset
3540 ClassInfo.pc_cid = myClass;
a61af66fc99e Initial load
duke
parents:
diff changeset
3541 ClassInfo.pc_clname[0] = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3542 rslt = (*priocntl_ptr) (PC_VERSION, (idtype)0, 0, PC_GETCLINFO, (caddr_t)&ClassInfo );
a61af66fc99e Initial load
duke
parents:
diff changeset
3543 if ( rslt < 0 ) return errno;
a61af66fc99e Initial load
duke
parents:
diff changeset
3544
a61af66fc99e Initial load
duke
parents:
diff changeset
3545 if (ThreadPriorityVerbose)
a61af66fc99e Initial load
duke
parents:
diff changeset
3546 tty->print_cr ("lwp_priocntl_init: Class=%d(%s)...", myClass, ClassInfo.pc_clname);
a61af66fc99e Initial load
duke
parents:
diff changeset
3547
a61af66fc99e Initial load
duke
parents:
diff changeset
3548 memset(&ParmInfo, 0, sizeof(pcparms_t));
a61af66fc99e Initial load
duke
parents:
diff changeset
3549 ParmInfo.pc_cid = PC_CLNULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
3550 rslt = (*priocntl_ptr)(PC_VERSION, P_PID, P_MYID, PC_GETPARMS, (caddr_t)&ParmInfo);
a61af66fc99e Initial load
duke
parents:
diff changeset
3551 if (rslt < 0) return errno;
a61af66fc99e Initial load
duke
parents:
diff changeset
3552
a61af66fc99e Initial load
duke
parents:
diff changeset
3553 if (ParmInfo.pc_cid == rtLimits.schedPolicy) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3554 myMin = rtLimits.minPrio;
a61af66fc99e Initial load
duke
parents:
diff changeset
3555 myMax = rtLimits.maxPrio;
a61af66fc99e Initial load
duke
parents:
diff changeset
3556 } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3557 iaparms_t *iaInfo = (iaparms_t*)ParmInfo.pc_clparms;
a61af66fc99e Initial load
duke
parents:
diff changeset
3558 myMin = iaLimits.minPrio;
a61af66fc99e Initial load
duke
parents:
diff changeset
3559 myMax = iaLimits.maxPrio;
a61af66fc99e Initial load
duke
parents:
diff changeset
3560 myMax = MIN2(myMax, (int)iaInfo->ia_uprilim); // clamp - restrict
a61af66fc99e Initial load
duke
parents:
diff changeset
3561 } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3562 tsparms_t *tsInfo = (tsparms_t*)ParmInfo.pc_clparms;
a61af66fc99e Initial load
duke
parents:
diff changeset
3563 myMin = tsLimits.minPrio;
a61af66fc99e Initial load
duke
parents:
diff changeset
3564 myMax = tsLimits.maxPrio;
a61af66fc99e Initial load
duke
parents:
diff changeset
3565 myMax = MIN2(myMax, (int)tsInfo->ts_uprilim); // clamp - restrict
a61af66fc99e Initial load
duke
parents:
diff changeset
3566 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
3567 // No clue - punt
a61af66fc99e Initial load
duke
parents:
diff changeset
3568 if (ThreadPriorityVerbose)
a61af66fc99e Initial load
duke
parents:
diff changeset
3569 tty->print_cr ("Unknown scheduling class: %s ... \n", ClassInfo.pc_clname);
a61af66fc99e Initial load
duke
parents:
diff changeset
3570 return EINVAL; // no clue, punt
a61af66fc99e Initial load
duke
parents:
diff changeset
3571 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3572
a61af66fc99e Initial load
duke
parents:
diff changeset
3573 if (ThreadPriorityVerbose)
a61af66fc99e Initial load
duke
parents:
diff changeset
3574 tty->print_cr ("Thread priority Range: [%d..%d]\n", myMin, myMax);
a61af66fc99e Initial load
duke
parents:
diff changeset
3575
a61af66fc99e Initial load
duke
parents:
diff changeset
3576 priocntl_enable = true; // Enable changing priorities
a61af66fc99e Initial load
duke
parents:
diff changeset
3577 return 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3578 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3579
a61af66fc99e Initial load
duke
parents:
diff changeset
3580 #define IAPRI(x) ((iaparms_t *)((x).pc_clparms))
a61af66fc99e Initial load
duke
parents:
diff changeset
3581 #define RTPRI(x) ((rtparms_t *)((x).pc_clparms))
a61af66fc99e Initial load
duke
parents:
diff changeset
3582 #define TSPRI(x) ((tsparms_t *)((x).pc_clparms))
a61af66fc99e Initial load
duke
parents:
diff changeset
3583
a61af66fc99e Initial load
duke
parents:
diff changeset
3584
a61af66fc99e Initial load
duke
parents:
diff changeset
3585 // scale_to_lwp_priority
a61af66fc99e Initial load
duke
parents:
diff changeset
3586 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3587 // Convert from the libthread "thr_setprio" scale to our current
a61af66fc99e Initial load
duke
parents:
diff changeset
3588 // lwp scheduling class scale.
a61af66fc99e Initial load
duke
parents:
diff changeset
3589 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3590 static
a61af66fc99e Initial load
duke
parents:
diff changeset
3591 int scale_to_lwp_priority (int rMin, int rMax, int x)
a61af66fc99e Initial load
duke
parents:
diff changeset
3592 {
a61af66fc99e Initial load
duke
parents:
diff changeset
3593 int v;
a61af66fc99e Initial load
duke
parents:
diff changeset
3594
a61af66fc99e Initial load
duke
parents:
diff changeset
3595 if (x == 127) return rMax; // avoid round-down
a61af66fc99e Initial load
duke
parents:
diff changeset
3596 v = (((x*(rMax-rMin)))/128)+rMin;
a61af66fc99e Initial load
duke
parents:
diff changeset
3597 return v;
a61af66fc99e Initial load
duke
parents:
diff changeset
3598 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3599
a61af66fc99e Initial load
duke
parents:
diff changeset
3600
a61af66fc99e Initial load
duke
parents:
diff changeset
3601 // set_lwp_priority
a61af66fc99e Initial load
duke
parents:
diff changeset
3602 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3603 // Set the priority of the lwp. This call should only be made
a61af66fc99e Initial load
duke
parents:
diff changeset
3604 // when using bound threads (T2 threads are bound by default).
a61af66fc99e Initial load
duke
parents:
diff changeset
3605 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3606 int set_lwp_priority (int ThreadID, int lwpid, int newPrio )
a61af66fc99e Initial load
duke
parents:
diff changeset
3607 {
a61af66fc99e Initial load
duke
parents:
diff changeset
3608 int rslt;
a61af66fc99e Initial load
duke
parents:
diff changeset
3609 int Actual, Expected, prv;
a61af66fc99e Initial load
duke
parents:
diff changeset
3610 pcparms_t ParmInfo; // for GET-SET
a61af66fc99e Initial load
duke
parents:
diff changeset
3611 #ifdef ASSERT
a61af66fc99e Initial load
duke
parents:
diff changeset
3612 pcparms_t ReadBack; // for readback
a61af66fc99e Initial load
duke
parents:
diff changeset
3613 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
3614
a61af66fc99e Initial load
duke
parents:
diff changeset
3615 // Set priority via PC_GETPARMS, update, PC_SETPARMS
a61af66fc99e Initial load
duke
parents:
diff changeset
3616 // Query current values.
a61af66fc99e Initial load
duke
parents:
diff changeset
3617 // TODO: accelerate this by eliminating the PC_GETPARMS call.
a61af66fc99e Initial load
duke
parents:
diff changeset
3618 // Cache "pcparms_t" in global ParmCache.
a61af66fc99e Initial load
duke
parents:
diff changeset
3619 // TODO: elide set-to-same-value
a61af66fc99e Initial load
duke
parents:
diff changeset
3620
a61af66fc99e Initial load
duke
parents:
diff changeset
3621 // If something went wrong on init, don't change priorities.
a61af66fc99e Initial load
duke
parents:
diff changeset
3622 if ( !priocntl_enable ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3623 if (ThreadPriorityVerbose)
a61af66fc99e Initial load
duke
parents:
diff changeset
3624 tty->print_cr("Trying to set priority but init failed, ignoring");
a61af66fc99e Initial load
duke
parents:
diff changeset
3625 return EINVAL;
a61af66fc99e Initial load
duke
parents:
diff changeset
3626 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3627
a61af66fc99e Initial load
duke
parents:
diff changeset
3628
a61af66fc99e Initial load
duke
parents:
diff changeset
3629 // If lwp hasn't started yet, just return
a61af66fc99e Initial load
duke
parents:
diff changeset
3630 // the _start routine will call us again.
a61af66fc99e Initial load
duke
parents:
diff changeset
3631 if ( lwpid <= 0 ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3632 if (ThreadPriorityVerbose) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3633 tty->print_cr ("deferring the set_lwp_priority of thread " INTPTR_FORMAT " to %d, lwpid not set",
a61af66fc99e Initial load
duke
parents:
diff changeset
3634 ThreadID, newPrio);
a61af66fc99e Initial load
duke
parents:
diff changeset
3635 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3636 return 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3637 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3638
a61af66fc99e Initial load
duke
parents:
diff changeset
3639 if (ThreadPriorityVerbose) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3640 tty->print_cr ("set_lwp_priority(" INTPTR_FORMAT "@" INTPTR_FORMAT " %d) ",
a61af66fc99e Initial load
duke
parents:
diff changeset
3641 ThreadID, lwpid, newPrio);
a61af66fc99e Initial load
duke
parents:
diff changeset
3642 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3643
a61af66fc99e Initial load
duke
parents:
diff changeset
3644 memset(&ParmInfo, 0, sizeof(pcparms_t));
a61af66fc99e Initial load
duke
parents:
diff changeset
3645 ParmInfo.pc_cid = PC_CLNULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
3646 rslt = (*priocntl_ptr)(PC_VERSION, P_LWPID, lwpid, PC_GETPARMS, (caddr_t)&ParmInfo);
a61af66fc99e Initial load
duke
parents:
diff changeset
3647 if (rslt < 0) return errno;
a61af66fc99e Initial load
duke
parents:
diff changeset
3648
a61af66fc99e Initial load
duke
parents:
diff changeset
3649 if (ParmInfo.pc_cid == rtLimits.schedPolicy) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3650 rtparms_t *rtInfo = (rtparms_t*)ParmInfo.pc_clparms;
a61af66fc99e Initial load
duke
parents:
diff changeset
3651 rtInfo->rt_pri = scale_to_lwp_priority (rtLimits.minPrio, rtLimits.maxPrio, newPrio);
a61af66fc99e Initial load
duke
parents:
diff changeset
3652 rtInfo->rt_tqsecs = RT_NOCHANGE;
a61af66fc99e Initial load
duke
parents:
diff changeset
3653 rtInfo->rt_tqnsecs = RT_NOCHANGE;
a61af66fc99e Initial load
duke
parents:
diff changeset
3654 if (ThreadPriorityVerbose) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3655 tty->print_cr("RT: %d->%d\n", newPrio, rtInfo->rt_pri);
a61af66fc99e Initial load
duke
parents:
diff changeset
3656 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3657 } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3658 iaparms_t *iaInfo = (iaparms_t*)ParmInfo.pc_clparms;
a61af66fc99e Initial load
duke
parents:
diff changeset
3659 int maxClamped = MIN2(iaLimits.maxPrio, (int)iaInfo->ia_uprilim);
a61af66fc99e Initial load
duke
parents:
diff changeset
3660 iaInfo->ia_upri = scale_to_lwp_priority(iaLimits.minPrio, maxClamped, newPrio);
a61af66fc99e Initial load
duke
parents:
diff changeset
3661 iaInfo->ia_uprilim = IA_NOCHANGE;
a61af66fc99e Initial load
duke
parents:
diff changeset
3662 iaInfo->ia_nice = IA_NOCHANGE;
a61af66fc99e Initial load
duke
parents:
diff changeset
3663 iaInfo->ia_mode = IA_NOCHANGE;
a61af66fc99e Initial load
duke
parents:
diff changeset
3664 if (ThreadPriorityVerbose) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3665 tty->print_cr ("IA: [%d...%d] %d->%d\n",
a61af66fc99e Initial load
duke
parents:
diff changeset
3666 iaLimits.minPrio, maxClamped, newPrio, iaInfo->ia_upri);
a61af66fc99e Initial load
duke
parents:
diff changeset
3667 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3668 } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3669 tsparms_t *tsInfo = (tsparms_t*)ParmInfo.pc_clparms;
a61af66fc99e Initial load
duke
parents:
diff changeset
3670 int maxClamped = MIN2(tsLimits.maxPrio, (int)tsInfo->ts_uprilim);
a61af66fc99e Initial load
duke
parents:
diff changeset
3671 prv = tsInfo->ts_upri;
a61af66fc99e Initial load
duke
parents:
diff changeset
3672 tsInfo->ts_upri = scale_to_lwp_priority(tsLimits.minPrio, maxClamped, newPrio);
a61af66fc99e Initial load
duke
parents:
diff changeset
3673 tsInfo->ts_uprilim = IA_NOCHANGE;
a61af66fc99e Initial load
duke
parents:
diff changeset
3674 if (ThreadPriorityVerbose) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3675 tty->print_cr ("TS: %d [%d...%d] %d->%d\n",
a61af66fc99e Initial load
duke
parents:
diff changeset
3676 prv, tsLimits.minPrio, maxClamped, newPrio, tsInfo->ts_upri);
a61af66fc99e Initial load
duke
parents:
diff changeset
3677 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3678 if (prv == tsInfo->ts_upri) return 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3679 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
3680 if ( ThreadPriorityVerbose ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3681 tty->print_cr ("Unknown scheduling class\n");
a61af66fc99e Initial load
duke
parents:
diff changeset
3682 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3683 return EINVAL; // no clue, punt
a61af66fc99e Initial load
duke
parents:
diff changeset
3684 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3685
a61af66fc99e Initial load
duke
parents:
diff changeset
3686 rslt = (*priocntl_ptr)(PC_VERSION, P_LWPID, lwpid, PC_SETPARMS, (caddr_t)&ParmInfo);
a61af66fc99e Initial load
duke
parents:
diff changeset
3687 if (ThreadPriorityVerbose && rslt) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3688 tty->print_cr ("PC_SETPARMS ->%d %d\n", rslt, errno);
a61af66fc99e Initial load
duke
parents:
diff changeset
3689 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3690 if (rslt < 0) return errno;
a61af66fc99e Initial load
duke
parents:
diff changeset
3691
a61af66fc99e Initial load
duke
parents:
diff changeset
3692 #ifdef ASSERT
a61af66fc99e Initial load
duke
parents:
diff changeset
3693 // Sanity check: read back what we just attempted to set.
a61af66fc99e Initial load
duke
parents:
diff changeset
3694 // In theory it could have changed in the interim ...
a61af66fc99e Initial load
duke
parents:
diff changeset
3695 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3696 // The priocntl system call is tricky.
a61af66fc99e Initial load
duke
parents:
diff changeset
3697 // Sometimes it'll validate the priority value argument and
a61af66fc99e Initial load
duke
parents:
diff changeset
3698 // return EINVAL if unhappy. At other times it fails silently.
a61af66fc99e Initial load
duke
parents:
diff changeset
3699 // Readbacks are prudent.
a61af66fc99e Initial load
duke
parents:
diff changeset
3700
a61af66fc99e Initial load
duke
parents:
diff changeset
3701 if (!ReadBackValidate) return 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3702
a61af66fc99e Initial load
duke
parents:
diff changeset
3703 memset(&ReadBack, 0, sizeof(pcparms_t));
a61af66fc99e Initial load
duke
parents:
diff changeset
3704 ReadBack.pc_cid = PC_CLNULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
3705 rslt = (*priocntl_ptr)(PC_VERSION, P_LWPID, lwpid, PC_GETPARMS, (caddr_t)&ReadBack);
a61af66fc99e Initial load
duke
parents:
diff changeset
3706 assert(rslt >= 0, "priocntl failed");
a61af66fc99e Initial load
duke
parents:
diff changeset
3707 Actual = Expected = 0xBAD;
a61af66fc99e Initial load
duke
parents:
diff changeset
3708 assert(ParmInfo.pc_cid == ReadBack.pc_cid, "cid's don't match");
a61af66fc99e Initial load
duke
parents:
diff changeset
3709 if (ParmInfo.pc_cid == rtLimits.schedPolicy) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3710 Actual = RTPRI(ReadBack)->rt_pri;
a61af66fc99e Initial load
duke
parents:
diff changeset
3711 Expected = RTPRI(ParmInfo)->rt_pri;
a61af66fc99e Initial load
duke
parents:
diff changeset
3712 } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3713 Actual = IAPRI(ReadBack)->ia_upri;
a61af66fc99e Initial load
duke
parents:
diff changeset
3714 Expected = IAPRI(ParmInfo)->ia_upri;
a61af66fc99e Initial load
duke
parents:
diff changeset
3715 } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3716 Actual = TSPRI(ReadBack)->ts_upri;
a61af66fc99e Initial load
duke
parents:
diff changeset
3717 Expected = TSPRI(ParmInfo)->ts_upri;
a61af66fc99e Initial load
duke
parents:
diff changeset
3718 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
3719 if ( ThreadPriorityVerbose ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3720 tty->print_cr("set_lwp_priority: unexpected class in readback: %d\n", ParmInfo.pc_cid);
a61af66fc99e Initial load
duke
parents:
diff changeset
3721 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3722 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3723
a61af66fc99e Initial load
duke
parents:
diff changeset
3724 if (Actual != Expected) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3725 if ( ThreadPriorityVerbose ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3726 tty->print_cr ("set_lwp_priority(%d %d) Class=%d: actual=%d vs expected=%d\n",
a61af66fc99e Initial load
duke
parents:
diff changeset
3727 lwpid, newPrio, ReadBack.pc_cid, Actual, Expected);
a61af66fc99e Initial load
duke
parents:
diff changeset
3728 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3729 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3730 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
3731
a61af66fc99e Initial load
duke
parents:
diff changeset
3732 return 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
3733 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3734
a61af66fc99e Initial load
duke
parents:
diff changeset
3735
a61af66fc99e Initial load
duke
parents:
diff changeset
3736
a61af66fc99e Initial load
duke
parents:
diff changeset
3737 // Solaris only gives access to 128 real priorities at a time,
a61af66fc99e Initial load
duke
parents:
diff changeset
3738 // so we expand Java's ten to fill this range. This would be better
a61af66fc99e Initial load
duke
parents:
diff changeset
3739 // if we dynamically adjusted relative priorities.
a61af66fc99e Initial load
duke
parents:
diff changeset
3740 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3741 // The ThreadPriorityPolicy option allows us to select 2 different
a61af66fc99e Initial load
duke
parents:
diff changeset
3742 // priority scales.
a61af66fc99e Initial load
duke
parents:
diff changeset
3743 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3744 // ThreadPriorityPolicy=0
a61af66fc99e Initial load
duke
parents:
diff changeset
3745 // Since the Solaris' default priority is MaximumPriority, we do not
a61af66fc99e Initial load
duke
parents:
diff changeset
3746 // set a priority lower than Max unless a priority lower than
a61af66fc99e Initial load
duke
parents:
diff changeset
3747 // NormPriority is requested.
a61af66fc99e Initial load
duke
parents:
diff changeset
3748 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3749 // ThreadPriorityPolicy=1
a61af66fc99e Initial load
duke
parents:
diff changeset
3750 // This mode causes the priority table to get filled with
a61af66fc99e Initial load
duke
parents:
diff changeset
3751 // linear values. NormPriority get's mapped to 50% of the
a61af66fc99e Initial load
duke
parents:
diff changeset
3752 // Maximum priority an so on. This will cause VM threads
a61af66fc99e Initial load
duke
parents:
diff changeset
3753 // to get unfair treatment against other Solaris processes
a61af66fc99e Initial load
duke
parents:
diff changeset
3754 // which do not explicitly alter their thread priorities.
a61af66fc99e Initial load
duke
parents:
diff changeset
3755 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3756
a61af66fc99e Initial load
duke
parents:
diff changeset
3757
a61af66fc99e Initial load
duke
parents:
diff changeset
3758 int os::java_to_os_priority[MaxPriority + 1] = {
a61af66fc99e Initial load
duke
parents:
diff changeset
3759 -99999, // 0 Entry should never be used
a61af66fc99e Initial load
duke
parents:
diff changeset
3760
a61af66fc99e Initial load
duke
parents:
diff changeset
3761 0, // 1 MinPriority
a61af66fc99e Initial load
duke
parents:
diff changeset
3762 32, // 2
a61af66fc99e Initial load
duke
parents:
diff changeset
3763 64, // 3
a61af66fc99e Initial load
duke
parents:
diff changeset
3764
a61af66fc99e Initial load
duke
parents:
diff changeset
3765 96, // 4
a61af66fc99e Initial load
duke
parents:
diff changeset
3766 127, // 5 NormPriority
a61af66fc99e Initial load
duke
parents:
diff changeset
3767 127, // 6
a61af66fc99e Initial load
duke
parents:
diff changeset
3768
a61af66fc99e Initial load
duke
parents:
diff changeset
3769 127, // 7
a61af66fc99e Initial load
duke
parents:
diff changeset
3770 127, // 8
a61af66fc99e Initial load
duke
parents:
diff changeset
3771 127, // 9 NearMaxPriority
a61af66fc99e Initial load
duke
parents:
diff changeset
3772
a61af66fc99e Initial load
duke
parents:
diff changeset
3773 127 // 10 MaxPriority
a61af66fc99e Initial load
duke
parents:
diff changeset
3774 };
a61af66fc99e Initial load
duke
parents:
diff changeset
3775
a61af66fc99e Initial load
duke
parents:
diff changeset
3776
a61af66fc99e Initial load
duke
parents:
diff changeset
3777 OSReturn os::set_native_priority(Thread* thread, int newpri) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3778 assert(newpri >= MinimumPriority && newpri <= MaximumPriority, "bad priority mapping");
a61af66fc99e Initial load
duke
parents:
diff changeset
3779 if ( !UseThreadPriorities ) return OS_OK;
a61af66fc99e Initial load
duke
parents:
diff changeset
3780 int status = thr_setprio(thread->osthread()->thread_id(), newpri);
a61af66fc99e Initial load
duke
parents:
diff changeset
3781 if ( os::Solaris::T2_libthread() || (UseBoundThreads && thread->osthread()->is_vm_created()) )
a61af66fc99e Initial load
duke
parents:
diff changeset
3782 status |= (set_lwp_priority (thread->osthread()->thread_id(),
a61af66fc99e Initial load
duke
parents:
diff changeset
3783 thread->osthread()->lwp_id(), newpri ));
a61af66fc99e Initial load
duke
parents:
diff changeset
3784 return (status == 0) ? OS_OK : OS_ERR;
a61af66fc99e Initial load
duke
parents:
diff changeset
3785 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3786
a61af66fc99e Initial load
duke
parents:
diff changeset
3787
a61af66fc99e Initial load
duke
parents:
diff changeset
3788 OSReturn os::get_native_priority(const Thread* const thread, int *priority_ptr) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3789 int p;
a61af66fc99e Initial load
duke
parents:
diff changeset
3790 if ( !UseThreadPriorities ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3791 *priority_ptr = NormalPriority;
a61af66fc99e Initial load
duke
parents:
diff changeset
3792 return OS_OK;
a61af66fc99e Initial load
duke
parents:
diff changeset
3793 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3794 int status = thr_getprio(thread->osthread()->thread_id(), &p);
a61af66fc99e Initial load
duke
parents:
diff changeset
3795 if (status != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3796 return OS_ERR;
a61af66fc99e Initial load
duke
parents:
diff changeset
3797 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3798 *priority_ptr = p;
a61af66fc99e Initial load
duke
parents:
diff changeset
3799 return OS_OK;
a61af66fc99e Initial load
duke
parents:
diff changeset
3800 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3801
a61af66fc99e Initial load
duke
parents:
diff changeset
3802
a61af66fc99e Initial load
duke
parents:
diff changeset
3803 // Hint to the underlying OS that a task switch would not be good.
a61af66fc99e Initial load
duke
parents:
diff changeset
3804 // Void return because it's a hint and can fail.
a61af66fc99e Initial load
duke
parents:
diff changeset
3805 void os::hint_no_preempt() {
a61af66fc99e Initial load
duke
parents:
diff changeset
3806 schedctl_start(schedctl_init());
a61af66fc99e Initial load
duke
parents:
diff changeset
3807 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3808
a61af66fc99e Initial load
duke
parents:
diff changeset
3809 void os::interrupt(Thread* thread) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3810 assert(Thread::current() == thread || Threads_lock->owned_by_self(), "possibility of dangling Thread pointer");
a61af66fc99e Initial load
duke
parents:
diff changeset
3811
a61af66fc99e Initial load
duke
parents:
diff changeset
3812 OSThread* osthread = thread->osthread();
a61af66fc99e Initial load
duke
parents:
diff changeset
3813
a61af66fc99e Initial load
duke
parents:
diff changeset
3814 int isInterrupted = osthread->interrupted();
a61af66fc99e Initial load
duke
parents:
diff changeset
3815 if (!isInterrupted) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3816 osthread->set_interrupted(true);
a61af66fc99e Initial load
duke
parents:
diff changeset
3817 OrderAccess::fence();
a61af66fc99e Initial load
duke
parents:
diff changeset
3818 // os::sleep() is implemented with either poll (NULL,0,timeout) or
a61af66fc99e Initial load
duke
parents:
diff changeset
3819 // by parking on _SleepEvent. If the former, thr_kill will unwedge
a61af66fc99e Initial load
duke
parents:
diff changeset
3820 // the sleeper by SIGINTR, otherwise the unpark() will wake the sleeper.
a61af66fc99e Initial load
duke
parents:
diff changeset
3821 ParkEvent * const slp = thread->_SleepEvent ;
a61af66fc99e Initial load
duke
parents:
diff changeset
3822 if (slp != NULL) slp->unpark() ;
a61af66fc99e Initial load
duke
parents:
diff changeset
3823 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3824
a61af66fc99e Initial load
duke
parents:
diff changeset
3825 // For JSR166: unpark after setting status but before thr_kill -dl
a61af66fc99e Initial load
duke
parents:
diff changeset
3826 if (thread->is_Java_thread()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3827 ((JavaThread*)thread)->parker()->unpark();
a61af66fc99e Initial load
duke
parents:
diff changeset
3828 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3829
a61af66fc99e Initial load
duke
parents:
diff changeset
3830 // Handle interruptible wait() ...
a61af66fc99e Initial load
duke
parents:
diff changeset
3831 ParkEvent * const ev = thread->_ParkEvent ;
a61af66fc99e Initial load
duke
parents:
diff changeset
3832 if (ev != NULL) ev->unpark() ;
a61af66fc99e Initial load
duke
parents:
diff changeset
3833
a61af66fc99e Initial load
duke
parents:
diff changeset
3834 // When events are used everywhere for os::sleep, then this thr_kill
a61af66fc99e Initial load
duke
parents:
diff changeset
3835 // will only be needed if UseVMInterruptibleIO is true.
a61af66fc99e Initial load
duke
parents:
diff changeset
3836
a61af66fc99e Initial load
duke
parents:
diff changeset
3837 if (!isInterrupted) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3838 int status = thr_kill(osthread->thread_id(), os::Solaris::SIGinterrupt());
a61af66fc99e Initial load
duke
parents:
diff changeset
3839 assert_status(status == 0, status, "thr_kill");
a61af66fc99e Initial load
duke
parents:
diff changeset
3840
a61af66fc99e Initial load
duke
parents:
diff changeset
3841 // Bump thread interruption counter
a61af66fc99e Initial load
duke
parents:
diff changeset
3842 RuntimeService::record_thread_interrupt_signaled_count();
a61af66fc99e Initial load
duke
parents:
diff changeset
3843 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3844 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3845
a61af66fc99e Initial load
duke
parents:
diff changeset
3846
a61af66fc99e Initial load
duke
parents:
diff changeset
3847 bool os::is_interrupted(Thread* thread, bool clear_interrupted) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3848 assert(Thread::current() == thread || Threads_lock->owned_by_self(), "possibility of dangling Thread pointer");
a61af66fc99e Initial load
duke
parents:
diff changeset
3849
a61af66fc99e Initial load
duke
parents:
diff changeset
3850 OSThread* osthread = thread->osthread();
a61af66fc99e Initial load
duke
parents:
diff changeset
3851
a61af66fc99e Initial load
duke
parents:
diff changeset
3852 bool res = osthread->interrupted();
a61af66fc99e Initial load
duke
parents:
diff changeset
3853
a61af66fc99e Initial load
duke
parents:
diff changeset
3854 // NOTE that since there is no "lock" around these two operations,
a61af66fc99e Initial load
duke
parents:
diff changeset
3855 // there is the possibility that the interrupted flag will be
a61af66fc99e Initial load
duke
parents:
diff changeset
3856 // "false" but that the interrupt event will be set. This is
a61af66fc99e Initial load
duke
parents:
diff changeset
3857 // intentional. The effect of this is that Object.wait() will appear
a61af66fc99e Initial load
duke
parents:
diff changeset
3858 // to have a spurious wakeup, which is not harmful, and the
a61af66fc99e Initial load
duke
parents:
diff changeset
3859 // possibility is so rare that it is not worth the added complexity
a61af66fc99e Initial load
duke
parents:
diff changeset
3860 // to add yet another lock. It has also been recommended not to put
a61af66fc99e Initial load
duke
parents:
diff changeset
3861 // the interrupted flag into the os::Solaris::Event structure,
a61af66fc99e Initial load
duke
parents:
diff changeset
3862 // because it hides the issue.
a61af66fc99e Initial load
duke
parents:
diff changeset
3863 if (res && clear_interrupted) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3864 osthread->set_interrupted(false);
a61af66fc99e Initial load
duke
parents:
diff changeset
3865 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3866 return res;
a61af66fc99e Initial load
duke
parents:
diff changeset
3867 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3868
a61af66fc99e Initial load
duke
parents:
diff changeset
3869
a61af66fc99e Initial load
duke
parents:
diff changeset
3870 void os::print_statistics() {
a61af66fc99e Initial load
duke
parents:
diff changeset
3871 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3872
a61af66fc99e Initial load
duke
parents:
diff changeset
3873 int os::message_box(const char* title, const char* message) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3874 int i;
a61af66fc99e Initial load
duke
parents:
diff changeset
3875 fdStream err(defaultStream::error_fd());
a61af66fc99e Initial load
duke
parents:
diff changeset
3876 for (i = 0; i < 78; i++) err.print_raw("=");
a61af66fc99e Initial load
duke
parents:
diff changeset
3877 err.cr();
a61af66fc99e Initial load
duke
parents:
diff changeset
3878 err.print_raw_cr(title);
a61af66fc99e Initial load
duke
parents:
diff changeset
3879 for (i = 0; i < 78; i++) err.print_raw("-");
a61af66fc99e Initial load
duke
parents:
diff changeset
3880 err.cr();
a61af66fc99e Initial load
duke
parents:
diff changeset
3881 err.print_raw_cr(message);
a61af66fc99e Initial load
duke
parents:
diff changeset
3882 for (i = 0; i < 78; i++) err.print_raw("=");
a61af66fc99e Initial load
duke
parents:
diff changeset
3883 err.cr();
a61af66fc99e Initial load
duke
parents:
diff changeset
3884
a61af66fc99e Initial load
duke
parents:
diff changeset
3885 char buf[16];
a61af66fc99e Initial load
duke
parents:
diff changeset
3886 // Prevent process from exiting upon "read error" without consuming all CPU
a61af66fc99e Initial load
duke
parents:
diff changeset
3887 while (::read(0, buf, sizeof(buf)) <= 0) { ::sleep(100); }
a61af66fc99e Initial load
duke
parents:
diff changeset
3888
a61af66fc99e Initial load
duke
parents:
diff changeset
3889 return buf[0] == 'y' || buf[0] == 'Y';
a61af66fc99e Initial load
duke
parents:
diff changeset
3890 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3891
a61af66fc99e Initial load
duke
parents:
diff changeset
3892 // A lightweight implementation that does not suspend the target thread and
a61af66fc99e Initial load
duke
parents:
diff changeset
3893 // thus returns only a hint. Used for profiling only!
a61af66fc99e Initial load
duke
parents:
diff changeset
3894 ExtendedPC os::get_thread_pc(Thread* thread) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3895 // Make sure that it is called by the watcher and the Threads lock is owned.
a61af66fc99e Initial load
duke
parents:
diff changeset
3896 assert(Thread::current()->is_Watcher_thread(), "Must be watcher and own Threads_lock");
a61af66fc99e Initial load
duke
parents:
diff changeset
3897 // For now, is only used to profile the VM Thread
a61af66fc99e Initial load
duke
parents:
diff changeset
3898 assert(thread->is_VM_thread(), "Can only be called for VMThread");
a61af66fc99e Initial load
duke
parents:
diff changeset
3899 ExtendedPC epc;
a61af66fc99e Initial load
duke
parents:
diff changeset
3900
a61af66fc99e Initial load
duke
parents:
diff changeset
3901 GetThreadPC_Callback cb(ProfileVM_lock);
a61af66fc99e Initial load
duke
parents:
diff changeset
3902 OSThread *osthread = thread->osthread();
a61af66fc99e Initial load
duke
parents:
diff changeset
3903 const int time_to_wait = 400; // 400ms wait for initial response
a61af66fc99e Initial load
duke
parents:
diff changeset
3904 int status = cb.interrupt(thread, time_to_wait);
a61af66fc99e Initial load
duke
parents:
diff changeset
3905
a61af66fc99e Initial load
duke
parents:
diff changeset
3906 if (cb.is_done() ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3907 epc = cb.addr();
a61af66fc99e Initial load
duke
parents:
diff changeset
3908 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
3909 DEBUG_ONLY(tty->print_cr("Failed to get pc for thread: %d got %d status",
a61af66fc99e Initial load
duke
parents:
diff changeset
3910 osthread->thread_id(), status););
a61af66fc99e Initial load
duke
parents:
diff changeset
3911 // epc is already NULL
a61af66fc99e Initial load
duke
parents:
diff changeset
3912 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3913 return epc;
a61af66fc99e Initial load
duke
parents:
diff changeset
3914 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3915
a61af66fc99e Initial load
duke
parents:
diff changeset
3916
a61af66fc99e Initial load
duke
parents:
diff changeset
3917 // This does not do anything on Solaris. This is basically a hook for being
a61af66fc99e Initial load
duke
parents:
diff changeset
3918 // able to use structured exception handling (thread-local exception filters) on, e.g., Win32.
a61af66fc99e Initial load
duke
parents:
diff changeset
3919 void os::os_exception_wrapper(java_call_t f, JavaValue* value, methodHandle* method, JavaCallArguments* args, Thread* thread) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3920 f(value, method, args, thread);
a61af66fc99e Initial load
duke
parents:
diff changeset
3921 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3922
a61af66fc99e Initial load
duke
parents:
diff changeset
3923 // This routine may be used by user applications as a "hook" to catch signals.
a61af66fc99e Initial load
duke
parents:
diff changeset
3924 // The user-defined signal handler must pass unrecognized signals to this
a61af66fc99e Initial load
duke
parents:
diff changeset
3925 // routine, and if it returns true (non-zero), then the signal handler must
a61af66fc99e Initial load
duke
parents:
diff changeset
3926 // return immediately. If the flag "abort_if_unrecognized" is true, then this
a61af66fc99e Initial load
duke
parents:
diff changeset
3927 // routine will never retun false (zero), but instead will execute a VM panic
a61af66fc99e Initial load
duke
parents:
diff changeset
3928 // routine kill the process.
a61af66fc99e Initial load
duke
parents:
diff changeset
3929 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3930 // If this routine returns false, it is OK to call it again. This allows
a61af66fc99e Initial load
duke
parents:
diff changeset
3931 // the user-defined signal handler to perform checks either before or after
a61af66fc99e Initial load
duke
parents:
diff changeset
3932 // the VM performs its own checks. Naturally, the user code would be making
a61af66fc99e Initial load
duke
parents:
diff changeset
3933 // a serious error if it tried to handle an exception (such as a null check
a61af66fc99e Initial load
duke
parents:
diff changeset
3934 // or breakpoint) that the VM was generating for its own correct operation.
a61af66fc99e Initial load
duke
parents:
diff changeset
3935 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3936 // This routine may recognize any of the following kinds of signals:
a61af66fc99e Initial load
duke
parents:
diff changeset
3937 // SIGBUS, SIGSEGV, SIGILL, SIGFPE, BREAK_SIGNAL, SIGPIPE, SIGXFSZ,
a61af66fc99e Initial load
duke
parents:
diff changeset
3938 // os::Solaris::SIGasync
a61af66fc99e Initial load
duke
parents:
diff changeset
3939 // It should be consulted by handlers for any of those signals.
a61af66fc99e Initial load
duke
parents:
diff changeset
3940 // It explicitly does not recognize os::Solaris::SIGinterrupt
a61af66fc99e Initial load
duke
parents:
diff changeset
3941 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3942 // The caller of this routine must pass in the three arguments supplied
a61af66fc99e Initial load
duke
parents:
diff changeset
3943 // to the function referred to in the "sa_sigaction" (not the "sa_handler")
a61af66fc99e Initial load
duke
parents:
diff changeset
3944 // field of the structure passed to sigaction(). This routine assumes that
a61af66fc99e Initial load
duke
parents:
diff changeset
3945 // the sa_flags field passed to sigaction() includes SA_SIGINFO and SA_RESTART.
a61af66fc99e Initial load
duke
parents:
diff changeset
3946 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3947 // Note that the VM will print warnings if it detects conflicting signal
a61af66fc99e Initial load
duke
parents:
diff changeset
3948 // handlers, unless invoked with the option "-XX:+AllowUserSignalHandlers".
a61af66fc99e Initial load
duke
parents:
diff changeset
3949 //
a61af66fc99e Initial load
duke
parents:
diff changeset
3950 extern "C" int JVM_handle_solaris_signal(int signo, siginfo_t* siginfo, void* ucontext, int abort_if_unrecognized);
a61af66fc99e Initial load
duke
parents:
diff changeset
3951
a61af66fc99e Initial load
duke
parents:
diff changeset
3952
a61af66fc99e Initial load
duke
parents:
diff changeset
3953 void signalHandler(int sig, siginfo_t* info, void* ucVoid) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3954 JVM_handle_solaris_signal(sig, info, ucVoid, true);
a61af66fc99e Initial load
duke
parents:
diff changeset
3955 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3956
a61af66fc99e Initial load
duke
parents:
diff changeset
3957 /* Do not delete - if guarantee is ever removed, a signal handler (even empty)
a61af66fc99e Initial load
duke
parents:
diff changeset
3958 is needed to provoke threads blocked on IO to return an EINTR
a61af66fc99e Initial load
duke
parents:
diff changeset
3959 Note: this explicitly does NOT call JVM_handle_solaris_signal and
a61af66fc99e Initial load
duke
parents:
diff changeset
3960 does NOT participate in signal chaining due to requirement for
a61af66fc99e Initial load
duke
parents:
diff changeset
3961 NOT setting SA_RESTART to make EINTR work. */
a61af66fc99e Initial load
duke
parents:
diff changeset
3962 extern "C" void sigINTRHandler(int sig, siginfo_t* info, void* ucVoid) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3963 if (UseSignalChaining) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3964 struct sigaction *actp = os::Solaris::get_chained_signal_action(sig);
a61af66fc99e Initial load
duke
parents:
diff changeset
3965 if (actp && actp->sa_handler) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3966 vm_exit_during_initialization("Signal chaining detected for VM interrupt signal, try -XX:+UseAltSigs");
a61af66fc99e Initial load
duke
parents:
diff changeset
3967 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3968 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3969 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3970
a61af66fc99e Initial load
duke
parents:
diff changeset
3971 // This boolean allows users to forward their own non-matching signals
a61af66fc99e Initial load
duke
parents:
diff changeset
3972 // to JVM_handle_solaris_signal, harmlessly.
a61af66fc99e Initial load
duke
parents:
diff changeset
3973 bool os::Solaris::signal_handlers_are_installed = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
3974
a61af66fc99e Initial load
duke
parents:
diff changeset
3975 // For signal-chaining
a61af66fc99e Initial load
duke
parents:
diff changeset
3976 bool os::Solaris::libjsig_is_loaded = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
3977 typedef struct sigaction *(*get_signal_t)(int);
a61af66fc99e Initial load
duke
parents:
diff changeset
3978 get_signal_t os::Solaris::get_signal_action = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
3979
a61af66fc99e Initial load
duke
parents:
diff changeset
3980 struct sigaction* os::Solaris::get_chained_signal_action(int sig) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3981 struct sigaction *actp = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
3982
a61af66fc99e Initial load
duke
parents:
diff changeset
3983 if ((libjsig_is_loaded) && (sig <= Maxlibjsigsigs)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3984 // Retrieve the old signal handler from libjsig
a61af66fc99e Initial load
duke
parents:
diff changeset
3985 actp = (*get_signal_action)(sig);
a61af66fc99e Initial load
duke
parents:
diff changeset
3986 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3987 if (actp == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3988 // Retrieve the preinstalled signal handler from jvm
a61af66fc99e Initial load
duke
parents:
diff changeset
3989 actp = get_preinstalled_handler(sig);
a61af66fc99e Initial load
duke
parents:
diff changeset
3990 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3991
a61af66fc99e Initial load
duke
parents:
diff changeset
3992 return actp;
a61af66fc99e Initial load
duke
parents:
diff changeset
3993 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3994
a61af66fc99e Initial load
duke
parents:
diff changeset
3995 static bool call_chained_handler(struct sigaction *actp, int sig,
a61af66fc99e Initial load
duke
parents:
diff changeset
3996 siginfo_t *siginfo, void *context) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3997 // Call the old signal handler
a61af66fc99e Initial load
duke
parents:
diff changeset
3998 if (actp->sa_handler == SIG_DFL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3999 // It's more reasonable to let jvm treat it as an unexpected exception
a61af66fc99e Initial load
duke
parents:
diff changeset
4000 // instead of taking the default action.
a61af66fc99e Initial load
duke
parents:
diff changeset
4001 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
4002 } else if (actp->sa_handler != SIG_IGN) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4003 if ((actp->sa_flags & SA_NODEFER) == 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4004 // automaticlly block the signal
a61af66fc99e Initial load
duke
parents:
diff changeset
4005 sigaddset(&(actp->sa_mask), sig);
a61af66fc99e Initial load
duke
parents:
diff changeset
4006 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4007
a61af66fc99e Initial load
duke
parents:
diff changeset
4008 sa_handler_t hand;
a61af66fc99e Initial load
duke
parents:
diff changeset
4009 sa_sigaction_t sa;
a61af66fc99e Initial load
duke
parents:
diff changeset
4010 bool siginfo_flag_set = (actp->sa_flags & SA_SIGINFO) != 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
4011 // retrieve the chained handler
a61af66fc99e Initial load
duke
parents:
diff changeset
4012 if (siginfo_flag_set) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4013 sa = actp->sa_sigaction;
a61af66fc99e Initial load
duke
parents:
diff changeset
4014 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
4015 hand = actp->sa_handler;
a61af66fc99e Initial load
duke
parents:
diff changeset
4016 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4017
a61af66fc99e Initial load
duke
parents:
diff changeset
4018 if ((actp->sa_flags & SA_RESETHAND) != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4019 actp->sa_handler = SIG_DFL;
a61af66fc99e Initial load
duke
parents:
diff changeset
4020 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4021
a61af66fc99e Initial load
duke
parents:
diff changeset
4022 // try to honor the signal mask
a61af66fc99e Initial load
duke
parents:
diff changeset
4023 sigset_t oset;
a61af66fc99e Initial load
duke
parents:
diff changeset
4024 thr_sigsetmask(SIG_SETMASK, &(actp->sa_mask), &oset);
a61af66fc99e Initial load
duke
parents:
diff changeset
4025
a61af66fc99e Initial load
duke
parents:
diff changeset
4026 // call into the chained handler
a61af66fc99e Initial load
duke
parents:
diff changeset
4027 if (siginfo_flag_set) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4028 (*sa)(sig, siginfo, context);
a61af66fc99e Initial load
duke
parents:
diff changeset
4029 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
4030 (*hand)(sig);
a61af66fc99e Initial load
duke
parents:
diff changeset
4031 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4032
a61af66fc99e Initial load
duke
parents:
diff changeset
4033 // restore the signal mask
a61af66fc99e Initial load
duke
parents:
diff changeset
4034 thr_sigsetmask(SIG_SETMASK, &oset, 0);
a61af66fc99e Initial load
duke
parents:
diff changeset
4035 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4036 // Tell jvm's signal handler the signal is taken care of.
a61af66fc99e Initial load
duke
parents:
diff changeset
4037 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
4038 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4039
a61af66fc99e Initial load
duke
parents:
diff changeset
4040 bool os::Solaris::chained_handler(int sig, siginfo_t* siginfo, void* context) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4041 bool chained = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
4042 // signal-chaining
a61af66fc99e Initial load
duke
parents:
diff changeset
4043 if (UseSignalChaining) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4044 struct sigaction *actp = get_chained_signal_action(sig);
a61af66fc99e Initial load
duke
parents:
diff changeset
4045 if (actp != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4046 chained = call_chained_handler(actp, sig, siginfo, context);
a61af66fc99e Initial load
duke
parents:
diff changeset
4047 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4048 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4049 return chained;
a61af66fc99e Initial load
duke
parents:
diff changeset
4050 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4051
a61af66fc99e Initial load
duke
parents:
diff changeset
4052 struct sigaction* os::Solaris::get_preinstalled_handler(int sig) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4053 assert((chainedsigactions != (struct sigaction *)NULL) && (preinstalled_sigs != (int *)NULL) , "signals not yet initialized");
a61af66fc99e Initial load
duke
parents:
diff changeset
4054 if (preinstalled_sigs[sig] != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4055 return &chainedsigactions[sig];
a61af66fc99e Initial load
duke
parents:
diff changeset
4056 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4057 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
4058 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4059
a61af66fc99e Initial load
duke
parents:
diff changeset
4060 void os::Solaris::save_preinstalled_handler(int sig, struct sigaction& oldAct) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4061
a61af66fc99e Initial load
duke
parents:
diff changeset
4062 assert(sig > 0 && sig <= Maxsignum, "vm signal out of expected range");
a61af66fc99e Initial load
duke
parents:
diff changeset
4063 assert((chainedsigactions != (struct sigaction *)NULL) && (preinstalled_sigs != (int *)NULL) , "signals not yet initialized");
a61af66fc99e Initial load
duke
parents:
diff changeset
4064 chainedsigactions[sig] = oldAct;
a61af66fc99e Initial load
duke
parents:
diff changeset
4065 preinstalled_sigs[sig] = 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
4066 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4067
a61af66fc99e Initial load
duke
parents:
diff changeset
4068 void os::Solaris::set_signal_handler(int sig, bool set_installed, bool oktochain) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4069 // Check for overwrite.
a61af66fc99e Initial load
duke
parents:
diff changeset
4070 struct sigaction oldAct;
a61af66fc99e Initial load
duke
parents:
diff changeset
4071 sigaction(sig, (struct sigaction*)NULL, &oldAct);
a61af66fc99e Initial load
duke
parents:
diff changeset
4072 void* oldhand = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction)
a61af66fc99e Initial load
duke
parents:
diff changeset
4073 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler);
a61af66fc99e Initial load
duke
parents:
diff changeset
4074 if (oldhand != CAST_FROM_FN_PTR(void*, SIG_DFL) &&
a61af66fc99e Initial load
duke
parents:
diff changeset
4075 oldhand != CAST_FROM_FN_PTR(void*, SIG_IGN) &&
a61af66fc99e Initial load
duke
parents:
diff changeset
4076 oldhand != CAST_FROM_FN_PTR(void*, signalHandler)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4077 if (AllowUserSignalHandlers || !set_installed) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4078 // Do not overwrite; user takes responsibility to forward to us.
a61af66fc99e Initial load
duke
parents:
diff changeset
4079 return;
a61af66fc99e Initial load
duke
parents:
diff changeset
4080 } else if (UseSignalChaining) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4081 if (oktochain) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4082 // save the old handler in jvm
a61af66fc99e Initial load
duke
parents:
diff changeset
4083 save_preinstalled_handler(sig, oldAct);
a61af66fc99e Initial load
duke
parents:
diff changeset
4084 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
4085 vm_exit_during_initialization("Signal chaining not allowed for VM interrupt signal, try -XX:+UseAltSigs.");
a61af66fc99e Initial load
duke
parents:
diff changeset
4086 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4087 // libjsig also interposes the sigaction() call below and saves the
a61af66fc99e Initial load
duke
parents:
diff changeset
4088 // old sigaction on it own.
a61af66fc99e Initial load
duke
parents:
diff changeset
4089 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
4090 fatal2("Encountered unexpected pre-existing sigaction handler %#lx for signal %d.", (long)oldhand, sig);
a61af66fc99e Initial load
duke
parents:
diff changeset
4091 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4092 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4093
a61af66fc99e Initial load
duke
parents:
diff changeset
4094 struct sigaction sigAct;
a61af66fc99e Initial load
duke
parents:
diff changeset
4095 sigfillset(&(sigAct.sa_mask));
a61af66fc99e Initial load
duke
parents:
diff changeset
4096 sigAct.sa_handler = SIG_DFL;
a61af66fc99e Initial load
duke
parents:
diff changeset
4097
a61af66fc99e Initial load
duke
parents:
diff changeset
4098 sigAct.sa_sigaction = signalHandler;
a61af66fc99e Initial load
duke
parents:
diff changeset
4099 // Handle SIGSEGV on alternate signal stack if
a61af66fc99e Initial load
duke
parents:
diff changeset
4100 // not using stack banging
a61af66fc99e Initial load
duke
parents:
diff changeset
4101 if (!UseStackBanging && sig == SIGSEGV) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4102 sigAct.sa_flags = SA_SIGINFO | SA_RESTART | SA_ONSTACK;
a61af66fc99e Initial load
duke
parents:
diff changeset
4103 // Interruptible i/o requires SA_RESTART cleared so EINTR
a61af66fc99e Initial load
duke
parents:
diff changeset
4104 // is returned instead of restarting system calls
a61af66fc99e Initial load
duke
parents:
diff changeset
4105 } else if (sig == os::Solaris::SIGinterrupt()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4106 sigemptyset(&sigAct.sa_mask);
a61af66fc99e Initial load
duke
parents:
diff changeset
4107 sigAct.sa_handler = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
4108 sigAct.sa_flags = SA_SIGINFO;
a61af66fc99e Initial load
duke
parents:
diff changeset
4109 sigAct.sa_sigaction = sigINTRHandler;
a61af66fc99e Initial load
duke
parents:
diff changeset
4110 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
4111 sigAct.sa_flags = SA_SIGINFO | SA_RESTART;
a61af66fc99e Initial load
duke
parents:
diff changeset
4112 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4113 os::Solaris::set_our_sigflags(sig, sigAct.sa_flags);
a61af66fc99e Initial load
duke
parents:
diff changeset
4114
a61af66fc99e Initial load
duke
parents:
diff changeset
4115 sigaction(sig, &sigAct, &oldAct);
a61af66fc99e Initial load
duke
parents:
diff changeset
4116
a61af66fc99e Initial load
duke
parents:
diff changeset
4117 void* oldhand2 = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction)
a61af66fc99e Initial load
duke
parents:
diff changeset
4118 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler);
a61af66fc99e Initial load
duke
parents:
diff changeset
4119 assert(oldhand2 == oldhand, "no concurrent signal handler installation");
a61af66fc99e Initial load
duke
parents:
diff changeset
4120 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4121
a61af66fc99e Initial load
duke
parents:
diff changeset
4122
a61af66fc99e Initial load
duke
parents:
diff changeset
4123 #define DO_SIGNAL_CHECK(sig) \
a61af66fc99e Initial load
duke
parents:
diff changeset
4124 if (!sigismember(&check_signal_done, sig)) \
a61af66fc99e Initial load
duke
parents:
diff changeset
4125 os::Solaris::check_signal_handler(sig)
a61af66fc99e Initial load
duke
parents:
diff changeset
4126
a61af66fc99e Initial load
duke
parents:
diff changeset
4127 // This method is a periodic task to check for misbehaving JNI applications
a61af66fc99e Initial load
duke
parents:
diff changeset
4128 // under CheckJNI, we can add any periodic checks here
a61af66fc99e Initial load
duke
parents:
diff changeset
4129
a61af66fc99e Initial load
duke
parents:
diff changeset
4130 void os::run_periodic_checks() {
a61af66fc99e Initial load
duke
parents:
diff changeset
4131 // A big source of grief is hijacking virt. addr 0x0 on Solaris,
a61af66fc99e Initial load
duke
parents:
diff changeset
4132 // thereby preventing a NULL checks.
a61af66fc99e Initial load
duke
parents:
diff changeset
4133 if(!check_addr0_done) check_addr0_done = check_addr0(tty);
a61af66fc99e Initial load
duke
parents:
diff changeset
4134
a61af66fc99e Initial load
duke
parents:
diff changeset
4135 if (check_signals == false) return;
a61af66fc99e Initial load
duke
parents:
diff changeset
4136
a61af66fc99e Initial load
duke
parents:
diff changeset
4137 // SEGV and BUS if overridden could potentially prevent
a61af66fc99e Initial load
duke
parents:
diff changeset
4138 // generation of hs*.log in the event of a crash, debugging
a61af66fc99e Initial load
duke
parents:
diff changeset
4139 // such a case can be very challenging, so we absolutely
a61af66fc99e Initial load
duke
parents:
diff changeset
4140 // check for the following for a good measure:
a61af66fc99e Initial load
duke
parents:
diff changeset
4141 DO_SIGNAL_CHECK(SIGSEGV);
a61af66fc99e Initial load
duke
parents:
diff changeset
4142 DO_SIGNAL_CHECK(SIGILL);
a61af66fc99e Initial load
duke
parents:
diff changeset
4143 DO_SIGNAL_CHECK(SIGFPE);
a61af66fc99e Initial load
duke
parents:
diff changeset
4144 DO_SIGNAL_CHECK(SIGBUS);
a61af66fc99e Initial load
duke
parents:
diff changeset
4145 DO_SIGNAL_CHECK(SIGPIPE);
a61af66fc99e Initial load
duke
parents:
diff changeset
4146 DO_SIGNAL_CHECK(SIGXFSZ);
a61af66fc99e Initial load
duke
parents:
diff changeset
4147
a61af66fc99e Initial load
duke
parents:
diff changeset
4148 // ReduceSignalUsage allows the user to override these handlers
a61af66fc99e Initial load
duke
parents:
diff changeset
4149 // see comments at the very top and jvm_solaris.h
a61af66fc99e Initial load
duke
parents:
diff changeset
4150 if (!ReduceSignalUsage) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4151 DO_SIGNAL_CHECK(SHUTDOWN1_SIGNAL);
a61af66fc99e Initial load
duke
parents:
diff changeset
4152 DO_SIGNAL_CHECK(SHUTDOWN2_SIGNAL);
a61af66fc99e Initial load
duke
parents:
diff changeset
4153 DO_SIGNAL_CHECK(SHUTDOWN3_SIGNAL);
a61af66fc99e Initial load
duke
parents:
diff changeset
4154 DO_SIGNAL_CHECK(BREAK_SIGNAL);
a61af66fc99e Initial load
duke
parents:
diff changeset
4155 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4156
a61af66fc99e Initial load
duke
parents:
diff changeset
4157 // See comments above for using JVM1/JVM2 and UseAltSigs
a61af66fc99e Initial load
duke
parents:
diff changeset
4158 DO_SIGNAL_CHECK(os::Solaris::SIGinterrupt());
a61af66fc99e Initial load
duke
parents:
diff changeset
4159 DO_SIGNAL_CHECK(os::Solaris::SIGasync());
a61af66fc99e Initial load
duke
parents:
diff changeset
4160
a61af66fc99e Initial load
duke
parents:
diff changeset
4161 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4162
a61af66fc99e Initial load
duke
parents:
diff changeset
4163 typedef int (*os_sigaction_t)(int, const struct sigaction *, struct sigaction *);
a61af66fc99e Initial load
duke
parents:
diff changeset
4164
a61af66fc99e Initial load
duke
parents:
diff changeset
4165 static os_sigaction_t os_sigaction = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
4166
a61af66fc99e Initial load
duke
parents:
diff changeset
4167 void os::Solaris::check_signal_handler(int sig) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4168 char buf[O_BUFLEN];
a61af66fc99e Initial load
duke
parents:
diff changeset
4169 address jvmHandler = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
4170
a61af66fc99e Initial load
duke
parents:
diff changeset
4171 struct sigaction act;
a61af66fc99e Initial load
duke
parents:
diff changeset
4172 if (os_sigaction == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4173 // only trust the default sigaction, in case it has been interposed
a61af66fc99e Initial load
duke
parents:
diff changeset
4174 os_sigaction = (os_sigaction_t)dlsym(RTLD_DEFAULT, "sigaction");
a61af66fc99e Initial load
duke
parents:
diff changeset
4175 if (os_sigaction == NULL) return;
a61af66fc99e Initial load
duke
parents:
diff changeset
4176 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4177
a61af66fc99e Initial load
duke
parents:
diff changeset
4178 os_sigaction(sig, (struct sigaction*)NULL, &act);
a61af66fc99e Initial load
duke
parents:
diff changeset
4179
a61af66fc99e Initial load
duke
parents:
diff changeset
4180 address thisHandler = (act.sa_flags & SA_SIGINFO)
a61af66fc99e Initial load
duke
parents:
diff changeset
4181 ? CAST_FROM_FN_PTR(address, act.sa_sigaction)
a61af66fc99e Initial load
duke
parents:
diff changeset
4182 : CAST_FROM_FN_PTR(address, act.sa_handler) ;
a61af66fc99e Initial load
duke
parents:
diff changeset
4183
a61af66fc99e Initial load
duke
parents:
diff changeset
4184
a61af66fc99e Initial load
duke
parents:
diff changeset
4185 switch(sig) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4186 case SIGSEGV:
a61af66fc99e Initial load
duke
parents:
diff changeset
4187 case SIGBUS:
a61af66fc99e Initial load
duke
parents:
diff changeset
4188 case SIGFPE:
a61af66fc99e Initial load
duke
parents:
diff changeset
4189 case SIGPIPE:
a61af66fc99e Initial load
duke
parents:
diff changeset
4190 case SIGXFSZ:
a61af66fc99e Initial load
duke
parents:
diff changeset
4191 case SIGILL:
a61af66fc99e Initial load
duke
parents:
diff changeset
4192 jvmHandler = CAST_FROM_FN_PTR(address, signalHandler);
a61af66fc99e Initial load
duke
parents:
diff changeset
4193 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
4194
a61af66fc99e Initial load
duke
parents:
diff changeset
4195 case SHUTDOWN1_SIGNAL:
a61af66fc99e Initial load
duke
parents:
diff changeset
4196 case SHUTDOWN2_SIGNAL:
a61af66fc99e Initial load
duke
parents:
diff changeset
4197 case SHUTDOWN3_SIGNAL:
a61af66fc99e Initial load
duke
parents:
diff changeset
4198 case BREAK_SIGNAL:
a61af66fc99e Initial load
duke
parents:
diff changeset
4199 jvmHandler = (address)user_handler();
a61af66fc99e Initial load
duke
parents:
diff changeset
4200 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
4201
a61af66fc99e Initial load
duke
parents:
diff changeset
4202 default:
a61af66fc99e Initial load
duke
parents:
diff changeset
4203 int intrsig = os::Solaris::SIGinterrupt();
a61af66fc99e Initial load
duke
parents:
diff changeset
4204 int asynsig = os::Solaris::SIGasync();
a61af66fc99e Initial load
duke
parents:
diff changeset
4205
a61af66fc99e Initial load
duke
parents:
diff changeset
4206 if (sig == intrsig) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4207 jvmHandler = CAST_FROM_FN_PTR(address, sigINTRHandler);
a61af66fc99e Initial load
duke
parents:
diff changeset
4208 } else if (sig == asynsig) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4209 jvmHandler = CAST_FROM_FN_PTR(address, signalHandler);
a61af66fc99e Initial load
duke
parents:
diff changeset
4210 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
4211 return;
a61af66fc99e Initial load
duke
parents:
diff changeset
4212 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4213 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
4214 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4215
a61af66fc99e Initial load
duke
parents:
diff changeset
4216
a61af66fc99e Initial load
duke
parents:
diff changeset
4217 if (thisHandler != jvmHandler) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4218 tty->print("Warning: %s handler ", exception_name(sig, buf, O_BUFLEN));
a61af66fc99e Initial load
duke
parents:
diff changeset
4219 tty->print("expected:%s", get_signal_handler_name(jvmHandler, buf, O_BUFLEN));
a61af66fc99e Initial load
duke
parents:
diff changeset
4220 tty->print_cr(" found:%s", get_signal_handler_name(thisHandler, buf, O_BUFLEN));
a61af66fc99e Initial load
duke
parents:
diff changeset
4221 // No need to check this sig any longer
a61af66fc99e Initial load
duke
parents:
diff changeset
4222 sigaddset(&check_signal_done, sig);
a61af66fc99e Initial load
duke
parents:
diff changeset
4223 } else if(os::Solaris::get_our_sigflags(sig) != 0 && act.sa_flags != os::Solaris::get_our_sigflags(sig)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4224 tty->print("Warning: %s handler flags ", exception_name(sig, buf, O_BUFLEN));
a61af66fc99e Initial load
duke
parents:
diff changeset
4225 tty->print("expected:" PTR32_FORMAT, os::Solaris::get_our_sigflags(sig));
a61af66fc99e Initial load
duke
parents:
diff changeset
4226 tty->print_cr(" found:" PTR32_FORMAT, act.sa_flags);
a61af66fc99e Initial load
duke
parents:
diff changeset
4227 // No need to check this sig any longer
a61af66fc99e Initial load
duke
parents:
diff changeset
4228 sigaddset(&check_signal_done, sig);
a61af66fc99e Initial load
duke
parents:
diff changeset
4229 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4230
a61af66fc99e Initial load
duke
parents:
diff changeset
4231 // Print all the signal handler state
a61af66fc99e Initial load
duke
parents:
diff changeset
4232 if (sigismember(&check_signal_done, sig)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4233 print_signal_handlers(tty, buf, O_BUFLEN);
a61af66fc99e Initial load
duke
parents:
diff changeset
4234 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4235
a61af66fc99e Initial load
duke
parents:
diff changeset
4236 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4237
a61af66fc99e Initial load
duke
parents:
diff changeset
4238 void os::Solaris::install_signal_handlers() {
a61af66fc99e Initial load
duke
parents:
diff changeset
4239 bool libjsigdone = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
4240 signal_handlers_are_installed = true;
a61af66fc99e Initial load
duke
parents:
diff changeset
4241
a61af66fc99e Initial load
duke
parents:
diff changeset
4242 // signal-chaining
a61af66fc99e Initial load
duke
parents:
diff changeset
4243 typedef void (*signal_setting_t)();
a61af66fc99e Initial load
duke
parents:
diff changeset
4244 signal_setting_t begin_signal_setting = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
4245 signal_setting_t end_signal_setting = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
4246 begin_signal_setting = CAST_TO_FN_PTR(signal_setting_t,
a61af66fc99e Initial load
duke
parents:
diff changeset
4247 dlsym(RTLD_DEFAULT, "JVM_begin_signal_setting"));
a61af66fc99e Initial load
duke
parents:
diff changeset
4248 if (begin_signal_setting != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4249 end_signal_setting = CAST_TO_FN_PTR(signal_setting_t,
a61af66fc99e Initial load
duke
parents:
diff changeset
4250 dlsym(RTLD_DEFAULT, "JVM_end_signal_setting"));
a61af66fc99e Initial load
duke
parents:
diff changeset
4251 get_signal_action = CAST_TO_FN_PTR(get_signal_t,
a61af66fc99e Initial load
duke
parents:
diff changeset
4252 dlsym(RTLD_DEFAULT, "JVM_get_signal_action"));
a61af66fc99e Initial load
duke
parents:
diff changeset
4253 get_libjsig_version = CAST_TO_FN_PTR(version_getting_t,
a61af66fc99e Initial load
duke
parents:
diff changeset
4254 dlsym(RTLD_DEFAULT, "JVM_get_libjsig_version"));
a61af66fc99e Initial load
duke
parents:
diff changeset
4255 libjsig_is_loaded = true;
a61af66fc99e Initial load
duke
parents:
diff changeset
4256 if (os::Solaris::get_libjsig_version != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4257 libjsigversion = (*os::Solaris::get_libjsig_version)();
a61af66fc99e Initial load
duke
parents:
diff changeset
4258 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4259 assert(UseSignalChaining, "should enable signal-chaining");
a61af66fc99e Initial load
duke
parents:
diff changeset
4260 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4261 if (libjsig_is_loaded) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4262 // Tell libjsig jvm is setting signal handlers
a61af66fc99e Initial load
duke
parents:
diff changeset
4263 (*begin_signal_setting)();
a61af66fc99e Initial load
duke
parents:
diff changeset
4264 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4265
a61af66fc99e Initial load
duke
parents:
diff changeset
4266 set_signal_handler(SIGSEGV, true, true);
a61af66fc99e Initial load
duke
parents:
diff changeset
4267 set_signal_handler(SIGPIPE, true, true);
a61af66fc99e Initial load
duke
parents:
diff changeset
4268 set_signal_handler(SIGXFSZ, true, true);
a61af66fc99e Initial load
duke
parents:
diff changeset
4269 set_signal_handler(SIGBUS, true, true);
a61af66fc99e Initial load
duke
parents:
diff changeset
4270 set_signal_handler(SIGILL, true, true);
a61af66fc99e Initial load
duke
parents:
diff changeset
4271 set_signal_handler(SIGFPE, true, true);
a61af66fc99e Initial load
duke
parents:
diff changeset
4272
a61af66fc99e Initial load
duke
parents:
diff changeset
4273
a61af66fc99e Initial load
duke
parents:
diff changeset
4274 if (os::Solaris::SIGinterrupt() > OLDMAXSIGNUM || os::Solaris::SIGasync() > OLDMAXSIGNUM) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4275
a61af66fc99e Initial load
duke
parents:
diff changeset
4276 // Pre-1.4.1 Libjsig limited to signal chaining signals <= 32 so
a61af66fc99e Initial load
duke
parents:
diff changeset
4277 // can not register overridable signals which might be > 32
a61af66fc99e Initial load
duke
parents:
diff changeset
4278 if (libjsig_is_loaded && libjsigversion <= JSIG_VERSION_1_4_1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4279 // Tell libjsig jvm has finished setting signal handlers
a61af66fc99e Initial load
duke
parents:
diff changeset
4280 (*end_signal_setting)();
a61af66fc99e Initial load
duke
parents:
diff changeset
4281 libjsigdone = true;
a61af66fc99e Initial load
duke
parents:
diff changeset
4282 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4283 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4284
a61af66fc99e Initial load
duke
parents:
diff changeset
4285 // Never ok to chain our SIGinterrupt
a61af66fc99e Initial load
duke
parents:
diff changeset
4286 set_signal_handler(os::Solaris::SIGinterrupt(), true, false);
a61af66fc99e Initial load
duke
parents:
diff changeset
4287 set_signal_handler(os::Solaris::SIGasync(), true, true);
a61af66fc99e Initial load
duke
parents:
diff changeset
4288
a61af66fc99e Initial load
duke
parents:
diff changeset
4289 if (libjsig_is_loaded && !libjsigdone) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4290 // Tell libjsig jvm finishes setting signal handlers
a61af66fc99e Initial load
duke
parents:
diff changeset
4291 (*end_signal_setting)();
a61af66fc99e Initial load
duke
parents:
diff changeset
4292 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4293
a61af66fc99e Initial load
duke
parents:
diff changeset
4294 // We don't activate signal checker if libjsig is in place, we trust ourselves
a61af66fc99e Initial load
duke
parents:
diff changeset
4295 // and if UserSignalHandler is installed all bets are off
a61af66fc99e Initial load
duke
parents:
diff changeset
4296 if (CheckJNICalls) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4297 if (libjsig_is_loaded) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4298 tty->print_cr("Info: libjsig is activated, all active signal checking is disabled");
a61af66fc99e Initial load
duke
parents:
diff changeset
4299 check_signals = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
4300 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4301 if (AllowUserSignalHandlers) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4302 tty->print_cr("Info: AllowUserSignalHandlers is activated, all active signal checking is disabled");
a61af66fc99e Initial load
duke
parents:
diff changeset
4303 check_signals = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
4304 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4305 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4306 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4307
a61af66fc99e Initial load
duke
parents:
diff changeset
4308
a61af66fc99e Initial load
duke
parents:
diff changeset
4309 void report_error(const char* file_name, int line_no, const char* title, const char* format, ...);
a61af66fc99e Initial load
duke
parents:
diff changeset
4310
a61af66fc99e Initial load
duke
parents:
diff changeset
4311 const char * signames[] = {
a61af66fc99e Initial load
duke
parents:
diff changeset
4312 "SIG0",
a61af66fc99e Initial load
duke
parents:
diff changeset
4313 "SIGHUP", "SIGINT", "SIGQUIT", "SIGILL", "SIGTRAP",
a61af66fc99e Initial load
duke
parents:
diff changeset
4314 "SIGABRT", "SIGEMT", "SIGFPE", "SIGKILL", "SIGBUS",
a61af66fc99e Initial load
duke
parents:
diff changeset
4315 "SIGSEGV", "SIGSYS", "SIGPIPE", "SIGALRM", "SIGTERM",
a61af66fc99e Initial load
duke
parents:
diff changeset
4316 "SIGUSR1", "SIGUSR2", "SIGCLD", "SIGPWR", "SIGWINCH",
a61af66fc99e Initial load
duke
parents:
diff changeset
4317 "SIGURG", "SIGPOLL", "SIGSTOP", "SIGTSTP", "SIGCONT",
a61af66fc99e Initial load
duke
parents:
diff changeset
4318 "SIGTTIN", "SIGTTOU", "SIGVTALRM", "SIGPROF", "SIGXCPU",
a61af66fc99e Initial load
duke
parents:
diff changeset
4319 "SIGXFSZ", "SIGWAITING", "SIGLWP", "SIGFREEZE", "SIGTHAW",
a61af66fc99e Initial load
duke
parents:
diff changeset
4320 "SIGCANCEL", "SIGLOST"
a61af66fc99e Initial load
duke
parents:
diff changeset
4321 };
a61af66fc99e Initial load
duke
parents:
diff changeset
4322
a61af66fc99e Initial load
duke
parents:
diff changeset
4323 const char* os::exception_name(int exception_code, char* buf, size_t size) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4324 if (0 < exception_code && exception_code <= SIGRTMAX) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4325 // signal
a61af66fc99e Initial load
duke
parents:
diff changeset
4326 if (exception_code < sizeof(signames)/sizeof(const char*)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4327 jio_snprintf(buf, size, "%s", signames[exception_code]);
a61af66fc99e Initial load
duke
parents:
diff changeset
4328 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
4329 jio_snprintf(buf, size, "SIG%d", exception_code);
a61af66fc99e Initial load
duke
parents:
diff changeset
4330 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4331 return buf;
a61af66fc99e Initial load
duke
parents:
diff changeset
4332 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
4333 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
4334 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4335 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4336
a61af66fc99e Initial load
duke
parents:
diff changeset
4337 // (Static) wrappers for the new libthread API
a61af66fc99e Initial load
duke
parents:
diff changeset
4338 int_fnP_thread_t_iP_uP_stack_tP_gregset_t os::Solaris::_thr_getstate;
a61af66fc99e Initial load
duke
parents:
diff changeset
4339 int_fnP_thread_t_i_gregset_t os::Solaris::_thr_setstate;
a61af66fc99e Initial load
duke
parents:
diff changeset
4340 int_fnP_thread_t_i os::Solaris::_thr_setmutator;
a61af66fc99e Initial load
duke
parents:
diff changeset
4341 int_fnP_thread_t os::Solaris::_thr_suspend_mutator;
a61af66fc99e Initial load
duke
parents:
diff changeset
4342 int_fnP_thread_t os::Solaris::_thr_continue_mutator;
a61af66fc99e Initial load
duke
parents:
diff changeset
4343
a61af66fc99e Initial load
duke
parents:
diff changeset
4344 // (Static) wrappers for the liblgrp API
a61af66fc99e Initial load
duke
parents:
diff changeset
4345 os::Solaris::lgrp_home_func_t os::Solaris::_lgrp_home;
a61af66fc99e Initial load
duke
parents:
diff changeset
4346 os::Solaris::lgrp_init_func_t os::Solaris::_lgrp_init;
a61af66fc99e Initial load
duke
parents:
diff changeset
4347 os::Solaris::lgrp_fini_func_t os::Solaris::_lgrp_fini;
a61af66fc99e Initial load
duke
parents:
diff changeset
4348 os::Solaris::lgrp_root_func_t os::Solaris::_lgrp_root;
a61af66fc99e Initial load
duke
parents:
diff changeset
4349 os::Solaris::lgrp_children_func_t os::Solaris::_lgrp_children;
a61af66fc99e Initial load
duke
parents:
diff changeset
4350 os::Solaris::lgrp_nlgrps_func_t os::Solaris::_lgrp_nlgrps;
a61af66fc99e Initial load
duke
parents:
diff changeset
4351 os::Solaris::lgrp_cookie_stale_func_t os::Solaris::_lgrp_cookie_stale;
a61af66fc99e Initial load
duke
parents:
diff changeset
4352 os::Solaris::lgrp_cookie_t os::Solaris::_lgrp_cookie = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
4353
a61af66fc99e Initial load
duke
parents:
diff changeset
4354 // (Static) wrapper for meminfo() call.
a61af66fc99e Initial load
duke
parents:
diff changeset
4355 os::Solaris::meminfo_func_t os::Solaris::_meminfo = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
4356
a61af66fc99e Initial load
duke
parents:
diff changeset
4357 static address resolve_symbol(const char *name) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4358 address addr;
a61af66fc99e Initial load
duke
parents:
diff changeset
4359
a61af66fc99e Initial load
duke
parents:
diff changeset
4360 addr = (address) dlsym(RTLD_DEFAULT, name);
a61af66fc99e Initial load
duke
parents:
diff changeset
4361 if(addr == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4362 // RTLD_DEFAULT was not defined on some early versions of 2.5.1
a61af66fc99e Initial load
duke
parents:
diff changeset
4363 addr = (address) dlsym(RTLD_NEXT, name);
a61af66fc99e Initial load
duke
parents:
diff changeset
4364 if(addr == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4365 fatal(dlerror());
a61af66fc99e Initial load
duke
parents:
diff changeset
4366 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4367 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4368 return addr;
a61af66fc99e Initial load
duke
parents:
diff changeset
4369 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4370
a61af66fc99e Initial load
duke
parents:
diff changeset
4371
a61af66fc99e Initial load
duke
parents:
diff changeset
4372
a61af66fc99e Initial load
duke
parents:
diff changeset
4373 // isT2_libthread()
a61af66fc99e Initial load
duke
parents:
diff changeset
4374 //
a61af66fc99e Initial load
duke
parents:
diff changeset
4375 // Routine to determine if we are currently using the new T2 libthread.
a61af66fc99e Initial load
duke
parents:
diff changeset
4376 //
a61af66fc99e Initial load
duke
parents:
diff changeset
4377 // We determine if we are using T2 by reading /proc/self/lstatus and
a61af66fc99e Initial load
duke
parents:
diff changeset
4378 // looking for a thread with the ASLWP bit set. If we find this status
a61af66fc99e Initial load
duke
parents:
diff changeset
4379 // bit set, we must assume that we are NOT using T2. The T2 team
a61af66fc99e Initial load
duke
parents:
diff changeset
4380 // has approved this algorithm.
a61af66fc99e Initial load
duke
parents:
diff changeset
4381 //
a61af66fc99e Initial load
duke
parents:
diff changeset
4382 // We need to determine if we are running with the new T2 libthread
a61af66fc99e Initial load
duke
parents:
diff changeset
4383 // since setting native thread priorities is handled differently
a61af66fc99e Initial load
duke
parents:
diff changeset
4384 // when using this library. All threads created using T2 are bound
a61af66fc99e Initial load
duke
parents:
diff changeset
4385 // threads. Calling thr_setprio is meaningless in this case.
a61af66fc99e Initial load
duke
parents:
diff changeset
4386 //
a61af66fc99e Initial load
duke
parents:
diff changeset
4387 bool isT2_libthread() {
a61af66fc99e Initial load
duke
parents:
diff changeset
4388 int i, rslt;
a61af66fc99e Initial load
duke
parents:
diff changeset
4389 static prheader_t * lwpArray = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
4390 static int lwpSize = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
4391 static int lwpFile = -1;
a61af66fc99e Initial load
duke
parents:
diff changeset
4392 lwpstatus_t * that;
a61af66fc99e Initial load
duke
parents:
diff changeset
4393 int aslwpcount;
a61af66fc99e Initial load
duke
parents:
diff changeset
4394 char lwpName [128];
a61af66fc99e Initial load
duke
parents:
diff changeset
4395 bool isT2 = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
4396
a61af66fc99e Initial load
duke
parents:
diff changeset
4397 #define ADR(x) ((uintptr_t)(x))
a61af66fc99e Initial load
duke
parents:
diff changeset
4398 #define LWPINDEX(ary,ix) ((lwpstatus_t *)(((ary)->pr_entsize * (ix)) + (ADR((ary) + 1))))
a61af66fc99e Initial load
duke
parents:
diff changeset
4399
a61af66fc99e Initial load
duke
parents:
diff changeset
4400 aslwpcount = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
4401 lwpSize = 16*1024;
a61af66fc99e Initial load
duke
parents:
diff changeset
4402 lwpArray = ( prheader_t *)NEW_C_HEAP_ARRAY (char, lwpSize);
a61af66fc99e Initial load
duke
parents:
diff changeset
4403 lwpFile = open ("/proc/self/lstatus", O_RDONLY, 0);
a61af66fc99e Initial load
duke
parents:
diff changeset
4404 if (lwpArray == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4405 if ( ThreadPriorityVerbose ) warning ("Couldn't allocate T2 Check array\n");
a61af66fc99e Initial load
duke
parents:
diff changeset
4406 return(isT2);
a61af66fc99e Initial load
duke
parents:
diff changeset
4407 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4408 if (lwpFile < 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4409 if ( ThreadPriorityVerbose ) warning ("Couldn't open /proc/self/lstatus\n");
a61af66fc99e Initial load
duke
parents:
diff changeset
4410 return(isT2);
a61af66fc99e Initial load
duke
parents:
diff changeset
4411 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4412 for (;;) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4413 lseek (lwpFile, 0, SEEK_SET);
a61af66fc99e Initial load
duke
parents:
diff changeset
4414 rslt = read (lwpFile, lwpArray, lwpSize);
a61af66fc99e Initial load
duke
parents:
diff changeset
4415 if ((lwpArray->pr_nent * lwpArray->pr_entsize) <= lwpSize) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4416 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
4417 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4418 FREE_C_HEAP_ARRAY(char, lwpArray);
a61af66fc99e Initial load
duke
parents:
diff changeset
4419 lwpSize = lwpArray->pr_nent * lwpArray->pr_entsize;
a61af66fc99e Initial load
duke
parents:
diff changeset
4420 lwpArray = ( prheader_t *)NEW_C_HEAP_ARRAY (char, lwpSize);
a61af66fc99e Initial load
duke
parents:
diff changeset
4421 if (lwpArray == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4422 if ( ThreadPriorityVerbose ) warning ("Couldn't allocate T2 Check array\n");
a61af66fc99e Initial load
duke
parents:
diff changeset
4423 return(isT2);
a61af66fc99e Initial load
duke
parents:
diff changeset
4424 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4425 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4426
a61af66fc99e Initial load
duke
parents:
diff changeset
4427 // We got a good snapshot - now iterate over the list.
a61af66fc99e Initial load
duke
parents:
diff changeset
4428 for (i = 0; i < lwpArray->pr_nent; i++ ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4429 that = LWPINDEX(lwpArray,i);
a61af66fc99e Initial load
duke
parents:
diff changeset
4430 if (that->pr_flags & PR_ASLWP) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4431 aslwpcount++;
a61af66fc99e Initial load
duke
parents:
diff changeset
4432 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4433 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4434 if ( aslwpcount == 0 ) isT2 = true;
a61af66fc99e Initial load
duke
parents:
diff changeset
4435
a61af66fc99e Initial load
duke
parents:
diff changeset
4436 FREE_C_HEAP_ARRAY(char, lwpArray);
a61af66fc99e Initial load
duke
parents:
diff changeset
4437 close (lwpFile);
a61af66fc99e Initial load
duke
parents:
diff changeset
4438 if ( ThreadPriorityVerbose ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4439 if ( isT2 ) tty->print_cr("We are running with a T2 libthread\n");
a61af66fc99e Initial load
duke
parents:
diff changeset
4440 else tty->print_cr("We are not running with a T2 libthread\n");
a61af66fc99e Initial load
duke
parents:
diff changeset
4441 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4442 return (isT2);
a61af66fc99e Initial load
duke
parents:
diff changeset
4443 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4444
a61af66fc99e Initial load
duke
parents:
diff changeset
4445
a61af66fc99e Initial load
duke
parents:
diff changeset
4446 void os::Solaris::libthread_init() {
a61af66fc99e Initial load
duke
parents:
diff changeset
4447 address func = (address)dlsym(RTLD_DEFAULT, "_thr_suspend_allmutators");
a61af66fc99e Initial load
duke
parents:
diff changeset
4448
a61af66fc99e Initial load
duke
parents:
diff changeset
4449 // Determine if we are running with the new T2 libthread
a61af66fc99e Initial load
duke
parents:
diff changeset
4450 os::Solaris::set_T2_libthread(isT2_libthread());
a61af66fc99e Initial load
duke
parents:
diff changeset
4451
a61af66fc99e Initial load
duke
parents:
diff changeset
4452 lwp_priocntl_init();
a61af66fc99e Initial load
duke
parents:
diff changeset
4453
a61af66fc99e Initial load
duke
parents:
diff changeset
4454 // RTLD_DEFAULT was not defined on some early versions of 5.5.1
a61af66fc99e Initial load
duke
parents:
diff changeset
4455 if(func == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4456 func = (address) dlsym(RTLD_NEXT, "_thr_suspend_allmutators");
a61af66fc99e Initial load
duke
parents:
diff changeset
4457 // Guarantee that this VM is running on an new enough OS (5.6 or
a61af66fc99e Initial load
duke
parents:
diff changeset
4458 // later) that it will have a new enough libthread.so.
a61af66fc99e Initial load
duke
parents:
diff changeset
4459 guarantee(func != NULL, "libthread.so is too old.");
a61af66fc99e Initial load
duke
parents:
diff changeset
4460 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4461
a61af66fc99e Initial load
duke
parents:
diff changeset
4462 // Initialize the new libthread getstate API wrappers
a61af66fc99e Initial load
duke
parents:
diff changeset
4463 func = resolve_symbol("thr_getstate");
a61af66fc99e Initial load
duke
parents:
diff changeset
4464 os::Solaris::set_thr_getstate(CAST_TO_FN_PTR(int_fnP_thread_t_iP_uP_stack_tP_gregset_t, func));
a61af66fc99e Initial load
duke
parents:
diff changeset
4465
a61af66fc99e Initial load
duke
parents:
diff changeset
4466 func = resolve_symbol("thr_setstate");
a61af66fc99e Initial load
duke
parents:
diff changeset
4467 os::Solaris::set_thr_setstate(CAST_TO_FN_PTR(int_fnP_thread_t_i_gregset_t, func));
a61af66fc99e Initial load
duke
parents:
diff changeset
4468
a61af66fc99e Initial load
duke
parents:
diff changeset
4469 func = resolve_symbol("thr_setmutator");
a61af66fc99e Initial load
duke
parents:
diff changeset
4470 os::Solaris::set_thr_setmutator(CAST_TO_FN_PTR(int_fnP_thread_t_i, func));
a61af66fc99e Initial load
duke
parents:
diff changeset
4471
a61af66fc99e Initial load
duke
parents:
diff changeset
4472 func = resolve_symbol("thr_suspend_mutator");
a61af66fc99e Initial load
duke
parents:
diff changeset
4473 os::Solaris::set_thr_suspend_mutator(CAST_TO_FN_PTR(int_fnP_thread_t, func));
a61af66fc99e Initial load
duke
parents:
diff changeset
4474
a61af66fc99e Initial load
duke
parents:
diff changeset
4475 func = resolve_symbol("thr_continue_mutator");
a61af66fc99e Initial load
duke
parents:
diff changeset
4476 os::Solaris::set_thr_continue_mutator(CAST_TO_FN_PTR(int_fnP_thread_t, func));
a61af66fc99e Initial load
duke
parents:
diff changeset
4477
a61af66fc99e Initial load
duke
parents:
diff changeset
4478 int size;
a61af66fc99e Initial load
duke
parents:
diff changeset
4479 void (*handler_info_func)(address *, int *);
a61af66fc99e Initial load
duke
parents:
diff changeset
4480 handler_info_func = CAST_TO_FN_PTR(void (*)(address *, int *), resolve_symbol("thr_sighndlrinfo"));
a61af66fc99e Initial load
duke
parents:
diff changeset
4481 handler_info_func(&handler_start, &size);
a61af66fc99e Initial load
duke
parents:
diff changeset
4482 handler_end = handler_start + size;
a61af66fc99e Initial load
duke
parents:
diff changeset
4483 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4484
a61af66fc99e Initial load
duke
parents:
diff changeset
4485
a61af66fc99e Initial load
duke
parents:
diff changeset
4486 int_fnP_mutex_tP os::Solaris::_mutex_lock;
a61af66fc99e Initial load
duke
parents:
diff changeset
4487 int_fnP_mutex_tP os::Solaris::_mutex_trylock;
a61af66fc99e Initial load
duke
parents:
diff changeset
4488 int_fnP_mutex_tP os::Solaris::_mutex_unlock;
a61af66fc99e Initial load
duke
parents:
diff changeset
4489 int_fnP_mutex_tP_i_vP os::Solaris::_mutex_init;
a61af66fc99e Initial load
duke
parents:
diff changeset
4490 int_fnP_mutex_tP os::Solaris::_mutex_destroy;
a61af66fc99e Initial load
duke
parents:
diff changeset
4491 int os::Solaris::_mutex_scope = USYNC_THREAD;
a61af66fc99e Initial load
duke
parents:
diff changeset
4492
a61af66fc99e Initial load
duke
parents:
diff changeset
4493 int_fnP_cond_tP_mutex_tP_timestruc_tP os::Solaris::_cond_timedwait;
a61af66fc99e Initial load
duke
parents:
diff changeset
4494 int_fnP_cond_tP_mutex_tP os::Solaris::_cond_wait;
a61af66fc99e Initial load
duke
parents:
diff changeset
4495 int_fnP_cond_tP os::Solaris::_cond_signal;
a61af66fc99e Initial load
duke
parents:
diff changeset
4496 int_fnP_cond_tP os::Solaris::_cond_broadcast;
a61af66fc99e Initial load
duke
parents:
diff changeset
4497 int_fnP_cond_tP_i_vP os::Solaris::_cond_init;
a61af66fc99e Initial load
duke
parents:
diff changeset
4498 int_fnP_cond_tP os::Solaris::_cond_destroy;
a61af66fc99e Initial load
duke
parents:
diff changeset
4499 int os::Solaris::_cond_scope = USYNC_THREAD;
a61af66fc99e Initial load
duke
parents:
diff changeset
4500
a61af66fc99e Initial load
duke
parents:
diff changeset
4501 void os::Solaris::synchronization_init() {
a61af66fc99e Initial load
duke
parents:
diff changeset
4502 if(UseLWPSynchronization) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4503 os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_lock")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4504 os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_trylock")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4505 os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_unlock")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4506 os::Solaris::set_mutex_init(lwp_mutex_init);
a61af66fc99e Initial load
duke
parents:
diff changeset
4507 os::Solaris::set_mutex_destroy(lwp_mutex_destroy);
a61af66fc99e Initial load
duke
parents:
diff changeset
4508 os::Solaris::set_mutex_scope(USYNC_THREAD);
a61af66fc99e Initial load
duke
parents:
diff changeset
4509
a61af66fc99e Initial load
duke
parents:
diff changeset
4510 os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("_lwp_cond_timedwait")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4511 os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("_lwp_cond_wait")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4512 os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("_lwp_cond_signal")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4513 os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("_lwp_cond_broadcast")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4514 os::Solaris::set_cond_init(lwp_cond_init);
a61af66fc99e Initial load
duke
parents:
diff changeset
4515 os::Solaris::set_cond_destroy(lwp_cond_destroy);
a61af66fc99e Initial load
duke
parents:
diff changeset
4516 os::Solaris::set_cond_scope(USYNC_THREAD);
a61af66fc99e Initial load
duke
parents:
diff changeset
4517 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4518 else {
a61af66fc99e Initial load
duke
parents:
diff changeset
4519 os::Solaris::set_mutex_scope(USYNC_THREAD);
a61af66fc99e Initial load
duke
parents:
diff changeset
4520 os::Solaris::set_cond_scope(USYNC_THREAD);
a61af66fc99e Initial load
duke
parents:
diff changeset
4521
a61af66fc99e Initial load
duke
parents:
diff changeset
4522 if(UsePthreads) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4523 os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_lock")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4524 os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_trylock")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4525 os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_unlock")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4526 os::Solaris::set_mutex_init(pthread_mutex_default_init);
a61af66fc99e Initial load
duke
parents:
diff changeset
4527 os::Solaris::set_mutex_destroy(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_destroy")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4528
a61af66fc99e Initial load
duke
parents:
diff changeset
4529 os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("pthread_cond_timedwait")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4530 os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("pthread_cond_wait")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4531 os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_signal")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4532 os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_broadcast")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4533 os::Solaris::set_cond_init(pthread_cond_default_init);
a61af66fc99e Initial load
duke
parents:
diff changeset
4534 os::Solaris::set_cond_destroy(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_destroy")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4535 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4536 else {
a61af66fc99e Initial load
duke
parents:
diff changeset
4537 os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_lock")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4538 os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_trylock")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4539 os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_unlock")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4540 os::Solaris::set_mutex_init(::mutex_init);
a61af66fc99e Initial load
duke
parents:
diff changeset
4541 os::Solaris::set_mutex_destroy(::mutex_destroy);
a61af66fc99e Initial load
duke
parents:
diff changeset
4542
a61af66fc99e Initial load
duke
parents:
diff changeset
4543 os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("cond_timedwait")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4544 os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("cond_wait")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4545 os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("cond_signal")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4546 os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("cond_broadcast")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4547 os::Solaris::set_cond_init(::cond_init);
a61af66fc99e Initial load
duke
parents:
diff changeset
4548 os::Solaris::set_cond_destroy(::cond_destroy);
a61af66fc99e Initial load
duke
parents:
diff changeset
4549 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4550 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4551 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4552
a61af66fc99e Initial load
duke
parents:
diff changeset
4553 void os::Solaris::liblgrp_init() {
a61af66fc99e Initial load
duke
parents:
diff changeset
4554 void *handle = dlopen("liblgrp.so", RTLD_LAZY);
a61af66fc99e Initial load
duke
parents:
diff changeset
4555 if (handle != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4556 os::Solaris::set_lgrp_home(CAST_TO_FN_PTR(lgrp_home_func_t, dlsym(handle, "lgrp_home")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4557 os::Solaris::set_lgrp_init(CAST_TO_FN_PTR(lgrp_init_func_t, dlsym(handle, "lgrp_init")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4558 os::Solaris::set_lgrp_fini(CAST_TO_FN_PTR(lgrp_fini_func_t, dlsym(handle, "lgrp_fini")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4559 os::Solaris::set_lgrp_root(CAST_TO_FN_PTR(lgrp_root_func_t, dlsym(handle, "lgrp_root")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4560 os::Solaris::set_lgrp_children(CAST_TO_FN_PTR(lgrp_children_func_t, dlsym(handle, "lgrp_children")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4561 os::Solaris::set_lgrp_nlgrps(CAST_TO_FN_PTR(lgrp_nlgrps_func_t, dlsym(handle, "lgrp_nlgrps")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4562 os::Solaris::set_lgrp_cookie_stale(CAST_TO_FN_PTR(lgrp_cookie_stale_func_t,
a61af66fc99e Initial load
duke
parents:
diff changeset
4563 dlsym(handle, "lgrp_cookie_stale")));
a61af66fc99e Initial load
duke
parents:
diff changeset
4564
a61af66fc99e Initial load
duke
parents:
diff changeset
4565 lgrp_cookie_t c = lgrp_init(LGRP_VIEW_CALLER);
a61af66fc99e Initial load
duke
parents:
diff changeset
4566 set_lgrp_cookie(c);
a61af66fc99e Initial load
duke
parents:
diff changeset
4567 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
4568 warning("your OS does not support NUMA");
a61af66fc99e Initial load
duke
parents:
diff changeset
4569 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4570 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4571
a61af66fc99e Initial load
duke
parents:
diff changeset
4572 void os::Solaris::misc_sym_init() {
a61af66fc99e Initial load
duke
parents:
diff changeset
4573 address func = (address)dlsym(RTLD_DEFAULT, "meminfo");
a61af66fc99e Initial load
duke
parents:
diff changeset
4574 if(func == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4575 func = (address) dlsym(RTLD_NEXT, "meminfo");
a61af66fc99e Initial load
duke
parents:
diff changeset
4576 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4577 if (func != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4578 os::Solaris::set_meminfo(CAST_TO_FN_PTR(meminfo_func_t, func));
a61af66fc99e Initial load
duke
parents:
diff changeset
4579 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4580 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4581
a61af66fc99e Initial load
duke
parents:
diff changeset
4582 // Symbol doesn't exist in Solaris 8 pset.h
a61af66fc99e Initial load
duke
parents:
diff changeset
4583 #ifndef PS_MYID
a61af66fc99e Initial load
duke
parents:
diff changeset
4584 #define PS_MYID -3
a61af66fc99e Initial load
duke
parents:
diff changeset
4585 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
4586
a61af66fc99e Initial load
duke
parents:
diff changeset
4587 // int pset_getloadavg(psetid_t pset, double loadavg[], int nelem);
a61af66fc99e Initial load
duke
parents:
diff changeset
4588 typedef long (*pset_getloadavg_type)(psetid_t pset, double loadavg[], int nelem);
a61af66fc99e Initial load
duke
parents:
diff changeset
4589 static pset_getloadavg_type pset_getloadavg_ptr = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
4590
a61af66fc99e Initial load
duke
parents:
diff changeset
4591 void init_pset_getloadavg_ptr(void) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4592 pset_getloadavg_ptr =
a61af66fc99e Initial load
duke
parents:
diff changeset
4593 (pset_getloadavg_type)dlsym(RTLD_DEFAULT, "pset_getloadavg");
a61af66fc99e Initial load
duke
parents:
diff changeset
4594 if (PrintMiscellaneous && Verbose && pset_getloadavg_ptr == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4595 warning("pset_getloadavg function not found");
a61af66fc99e Initial load
duke
parents:
diff changeset
4596 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4597 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4598
a61af66fc99e Initial load
duke
parents:
diff changeset
4599 int os::Solaris::_dev_zero_fd = -1;
a61af66fc99e Initial load
duke
parents:
diff changeset
4600
a61af66fc99e Initial load
duke
parents:
diff changeset
4601 // this is called _before_ the global arguments have been parsed
a61af66fc99e Initial load
duke
parents:
diff changeset
4602 void os::init(void) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4603 _initial_pid = getpid();
a61af66fc99e Initial load
duke
parents:
diff changeset
4604
a61af66fc99e Initial load
duke
parents:
diff changeset
4605 max_hrtime = first_hrtime = gethrtime();
a61af66fc99e Initial load
duke
parents:
diff changeset
4606
a61af66fc99e Initial load
duke
parents:
diff changeset
4607 init_random(1234567);
a61af66fc99e Initial load
duke
parents:
diff changeset
4608
a61af66fc99e Initial load
duke
parents:
diff changeset
4609 page_size = sysconf(_SC_PAGESIZE);
a61af66fc99e Initial load
duke
parents:
diff changeset
4610 if (page_size == -1)
a61af66fc99e Initial load
duke
parents:
diff changeset
4611 fatal1("os_solaris.cpp: os::init: sysconf failed (%s)", strerror(errno));
a61af66fc99e Initial load
duke
parents:
diff changeset
4612 init_page_sizes((size_t) page_size);
a61af66fc99e Initial load
duke
parents:
diff changeset
4613
a61af66fc99e Initial load
duke
parents:
diff changeset
4614 Solaris::initialize_system_info();
a61af66fc99e Initial load
duke
parents:
diff changeset
4615
a61af66fc99e Initial load
duke
parents:
diff changeset
4616 int fd = open("/dev/zero", O_RDWR);
a61af66fc99e Initial load
duke
parents:
diff changeset
4617 if (fd < 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4618 fatal1("os::init: cannot open /dev/zero (%s)", strerror(errno));
a61af66fc99e Initial load
duke
parents:
diff changeset
4619 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
4620 Solaris::set_dev_zero_fd(fd);
a61af66fc99e Initial load
duke
parents:
diff changeset
4621
a61af66fc99e Initial load
duke
parents:
diff changeset
4622 // Close on exec, child won't inherit.
a61af66fc99e Initial load
duke
parents:
diff changeset
4623 fcntl(fd, F_SETFD, FD_CLOEXEC);
a61af66fc99e Initial load
duke
parents:
diff changeset
4624 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4625
a61af66fc99e Initial load
duke
parents:
diff changeset
4626 clock_tics_per_sec = CLK_TCK;
a61af66fc99e Initial load
duke
parents:
diff changeset
4627
a61af66fc99e Initial load
duke
parents:
diff changeset
4628 // check if dladdr1() exists; dladdr1 can provide more information than
a61af66fc99e Initial load
duke
parents:
diff changeset
4629 // dladdr for os::dll_address_to_function_name. It comes with SunOS 5.9
a61af66fc99e Initial load
duke
parents:
diff changeset
4630 // and is available on linker patches for 5.7 and 5.8.
a61af66fc99e Initial load
duke
parents:
diff changeset
4631 // libdl.so must have been loaded, this call is just an entry lookup
a61af66fc99e Initial load
duke
parents:
diff changeset
4632 void * hdl = dlopen("libdl.so", RTLD_NOW);
a61af66fc99e Initial load
duke
parents:
diff changeset
4633 if (hdl)
a61af66fc99e Initial load
duke
parents:
diff changeset
4634 dladdr1_func = CAST_TO_FN_PTR(dladdr1_func_type, dlsym(hdl, "dladdr1"));
a61af66fc99e Initial load
duke
parents:
diff changeset
4635
a61af66fc99e Initial load
duke
parents:
diff changeset
4636 // (Solaris only) this switches to calls that actually do locking.
a61af66fc99e Initial load
duke
parents:
diff changeset
4637 ThreadCritical::initialize();
a61af66fc99e Initial load
duke
parents:
diff changeset
4638
a61af66fc99e Initial load
duke
parents:
diff changeset
4639 main_thread = thr_self();
a61af66fc99e Initial load
duke
parents:
diff changeset
4640
a61af66fc99e Initial load
duke
parents:
diff changeset
4641 // Constant minimum stack size allowed. It must be at least
a61af66fc99e Initial load
duke
parents:
diff changeset
4642 // the minimum of what the OS supports (thr_min_stack()), and
a61af66fc99e Initial load
duke
parents:
diff changeset
4643 // enough to allow the thread to get to user bytecode execution.
a61af66fc99e Initial load
duke
parents:
diff changeset
4644 Solaris::min_stack_allowed = MAX2(thr_min_stack(), Solaris::min_stack_allowed);
a61af66fc99e Initial load
duke
parents:
diff changeset
4645 // If the pagesize of the VM is greater than 8K determine the appropriate
a61af66fc99e Initial load
duke
parents:
diff changeset
4646 // number of initial guard pages. The user can change this with the
a61af66fc99e Initial load
duke
parents:
diff changeset
4647 // command line arguments, if needed.
a61af66fc99e Initial load
duke
parents:
diff changeset
4648 if (vm_page_size() > 8*K) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4649 StackYellowPages = 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
4650 StackRedPages = 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
4651 StackShadowPages = round_to((StackShadowPages*8*K), vm_page_size()) / vm_page_size();
a61af66fc99e Initial load
duke
parents:
diff changeset
4652 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4653 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4654
a61af66fc99e Initial load
duke
parents:
diff changeset
4655 // To install functions for atexit system call
a61af66fc99e Initial load
duke
parents:
diff changeset
4656 extern "C" {
a61af66fc99e Initial load
duke
parents:
diff changeset
4657 static void perfMemory_exit_helper() {
a61af66fc99e Initial load
duke
parents:
diff changeset
4658 perfMemory_exit();
a61af66fc99e Initial load
duke
parents:
diff changeset
4659 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4660 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4661
a61af66fc99e Initial load
duke
parents:
diff changeset
4662 // this is called _after_ the global arguments have been parsed
a61af66fc99e Initial load
duke
parents:
diff changeset
4663 jint os::init_2(void) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4664 // try to enable extended file IO ASAP, see 6431278
a61af66fc99e Initial load
duke
parents:
diff changeset
4665 os::Solaris::try_enable_extended_io();
a61af66fc99e Initial load
duke
parents:
diff changeset
4666
a61af66fc99e Initial load
duke
parents:
diff changeset
4667 // Allocate a single page and mark it as readable for safepoint polling. Also
a61af66fc99e Initial load
duke
parents:
diff changeset
4668 // use this first mmap call to check support for MAP_ALIGN.
a61af66fc99e Initial load
duke
parents:
diff changeset
4669 address polling_page = (address)Solaris::mmap_chunk((char*)page_size,
a61af66fc99e Initial load
duke
parents:
diff changeset
4670 page_size,
a61af66fc99e Initial load
duke
parents:
diff changeset
4671 MAP_PRIVATE | MAP_ALIGN,
a61af66fc99e Initial load
duke
parents:
diff changeset
4672 PROT_READ);
a61af66fc99e Initial load
duke
parents:
diff changeset
4673 if (polling_page == NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4674 has_map_align = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
4675 polling_page = (address)Solaris::mmap_chunk(NULL, page_size, MAP_PRIVATE,
a61af66fc99e Initial load
duke
parents:
diff changeset
4676 PROT_READ);
a61af66fc99e Initial load
duke
parents:
diff changeset
4677 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4678
a61af66fc99e Initial load
duke
parents:
diff changeset
4679 os::set_polling_page(polling_page);
a61af66fc99e Initial load
duke
parents:
diff changeset
4680
a61af66fc99e Initial load
duke
parents:
diff changeset
4681 #ifndef PRODUCT
a61af66fc99e Initial load
duke
parents:
diff changeset
4682 if( Verbose && PrintMiscellaneous )
a61af66fc99e Initial load
duke
parents:
diff changeset
4683 tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page);
a61af66fc99e Initial load
duke
parents:
diff changeset
4684 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
4685
a61af66fc99e Initial load
duke
parents:
diff changeset
4686 if (!UseMembar) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4687 address mem_serialize_page = (address)Solaris::mmap_chunk( NULL, page_size, MAP_PRIVATE, PROT_READ | PROT_WRITE );
a61af66fc99e Initial load
duke
parents:
diff changeset
4688 guarantee( mem_serialize_page != NULL, "mmap Failed for memory serialize page");
a61af66fc99e Initial load
duke
parents:
diff changeset
4689 os::set_memory_serialize_page( mem_serialize_page );
a61af66fc99e Initial load
duke
parents:
diff changeset
4690
a61af66fc99e Initial load
duke
parents:
diff changeset
4691 #ifndef PRODUCT
a61af66fc99e Initial load
duke
parents:
diff changeset
4692 if(Verbose && PrintMiscellaneous)
a61af66fc99e Initial load
duke
parents:
diff changeset
4693 tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page);
a61af66fc99e Initial load
duke
parents:
diff changeset
4694 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
4695 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4696
a61af66fc99e Initial load
duke
parents:
diff changeset
4697 FLAG_SET_DEFAULT(UseLargePages, os::large_page_init());
a61af66fc99e Initial load
duke
parents:
diff changeset
4698
a61af66fc99e Initial load
duke
parents:
diff changeset
4699 // Check minimum allowable stack size for thread creation and to initialize
a61af66fc99e Initial load
duke
parents:
diff changeset
4700 // the java system classes, including StackOverflowError - depends on page
a61af66fc99e Initial load
duke
parents:
diff changeset
4701 // size. Add a page for compiler2 recursion in main thread.
a61af66fc99e Initial load
duke
parents:
diff changeset
4702 // Add in BytesPerWord times page size to account for VM stack during
a61af66fc99e Initial load
duke
parents:
diff changeset
4703 // class initialization depending on 32 or 64 bit VM.
a61af66fc99e Initial load
duke
parents:
diff changeset
4704 guarantee((Solaris::min_stack_allowed >=
a61af66fc99e Initial load
duke
parents:
diff changeset
4705 (StackYellowPages+StackRedPages+StackShadowPages+BytesPerWord
a61af66fc99e Initial load
duke
parents:
diff changeset
4706 COMPILER2_PRESENT(+1)) * page_size),
a61af66fc99e Initial load
duke
parents:
diff changeset
4707 "need to increase Solaris::min_stack_allowed on this platform");
a61af66fc99e Initial load
duke
parents:
diff changeset
4708
a61af66fc99e Initial load
duke
parents:
diff changeset
4709 size_t threadStackSizeInBytes = ThreadStackSize * K;
a61af66fc99e Initial load
duke
parents:
diff changeset
4710 if (threadStackSizeInBytes != 0 &&
a61af66fc99e Initial load
duke
parents:
diff changeset
4711 threadStackSizeInBytes < Solaris::min_stack_allowed) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4712 tty->print_cr("\nThe stack size specified is too small, Specify at least %dk",
a61af66fc99e Initial load
duke
parents:
diff changeset
4713 Solaris::min_stack_allowed/K);
a61af66fc99e Initial load
duke
parents:
diff changeset
4714 return JNI_ERR;
a61af66fc99e Initial load
duke
parents:
diff changeset
4715 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4716
a61af66fc99e Initial load
duke
parents:
diff changeset
4717 // For 64kbps there will be a 64kb page size, which makes
a61af66fc99e Initial load
duke
parents:
diff changeset
4718 // the usable default stack size quite a bit less. Increase the
a61af66fc99e Initial load
duke
parents:
diff changeset
4719 // stack for 64kb (or any > than 8kb) pages, this increases
a61af66fc99e Initial load
duke
parents:
diff changeset
4720 // virtual memory fragmentation (since we're not creating the
a61af66fc99e Initial load
duke
parents:
diff changeset
4721 // stack on a power of 2 boundary. The real fix for this
a61af66fc99e Initial load
duke
parents:
diff changeset
4722 // should be to fix the guard page mechanism.
a61af66fc99e Initial load
duke
parents:
diff changeset
4723
a61af66fc99e Initial load
duke
parents:
diff changeset
4724 if (vm_page_size() > 8*K) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4725 threadStackSizeInBytes = (threadStackSizeInBytes != 0)
a61af66fc99e Initial load
duke
parents:
diff changeset
4726 ? threadStackSizeInBytes +
a61af66fc99e Initial load
duke
parents:
diff changeset
4727 ((StackYellowPages + StackRedPages) * vm_page_size())
a61af66fc99e Initial load
duke
parents:
diff changeset
4728 : 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
4729 ThreadStackSize = threadStackSizeInBytes/K;
a61af66fc99e Initial load
duke
parents:
diff changeset
4730 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4731
a61af66fc99e Initial load
duke
parents:
diff changeset
4732 // Make the stack size a multiple of the page size so that
a61af66fc99e Initial load
duke
parents:
diff changeset
4733 // the yellow/red zones can be guarded.
a61af66fc99e Initial load
duke
parents:
diff changeset
4734 JavaThread::set_stack_size_at_create(round_to(threadStackSizeInBytes,
a61af66fc99e Initial load
duke
parents:
diff changeset
4735 vm_page_size()));
a61af66fc99e Initial load
duke
parents:
diff changeset
4736
a61af66fc99e Initial load
duke
parents:
diff changeset
4737 Solaris::libthread_init();
a61af66fc99e Initial load
duke
parents:
diff changeset
4738 if (UseNUMA) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4739 Solaris::liblgrp_init();
a61af66fc99e Initial load
duke
parents:
diff changeset
4740 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4741 Solaris::misc_sym_init();
a61af66fc99e Initial load
duke
parents:
diff changeset
4742 Solaris::signal_sets_init();
a61af66fc99e Initial load
duke
parents:
diff changeset
4743 Solaris::init_signal_mem();
a61af66fc99e Initial load
duke
parents:
diff changeset
4744 Solaris::install_signal_handlers();
a61af66fc99e Initial load
duke
parents:
diff changeset
4745
a61af66fc99e Initial load
duke
parents:
diff changeset
4746 if (libjsigversion < JSIG_VERSION_1_4_1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4747 Maxlibjsigsigs = OLDMAXSIGNUM;
a61af66fc99e Initial load
duke
parents:
diff changeset
4748 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4749
a61af66fc99e Initial load
duke
parents:
diff changeset
4750 // initialize synchronization primitives to use either thread or
a61af66fc99e Initial load
duke
parents:
diff changeset
4751 // lwp synchronization (controlled by UseLWPSynchronization)
a61af66fc99e Initial load
duke
parents:
diff changeset
4752 Solaris::synchronization_init();
a61af66fc99e Initial load
duke
parents:
diff changeset
4753
a61af66fc99e Initial load
duke
parents:
diff changeset
4754 if (MaxFDLimit) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4755 // set the number of file descriptors to max. print out error
a61af66fc99e Initial load
duke
parents:
diff changeset
4756 // if getrlimit/setrlimit fails but continue regardless.
a61af66fc99e Initial load
duke
parents:
diff changeset
4757 struct rlimit nbr_files;
a61af66fc99e Initial load
duke
parents:
diff changeset
4758 int status = getrlimit(RLIMIT_NOFILE, &nbr_files);
a61af66fc99e Initial load
duke
parents:
diff changeset
4759 if (status != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4760 if (PrintMiscellaneous && (Verbose || WizardMode))
a61af66fc99e Initial load
duke
parents:
diff changeset
4761 perror("os::init_2 getrlimit failed");
a61af66fc99e Initial load
duke
parents:
diff changeset
4762 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
4763 nbr_files.rlim_cur = nbr_files.rlim_max;
a61af66fc99e Initial load
duke
parents:
diff changeset
4764 status = setrlimit(RLIMIT_NOFILE, &nbr_files);
a61af66fc99e Initial load
duke
parents:
diff changeset
4765 if (status != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4766 if (PrintMiscellaneous && (Verbose || WizardMode))
a61af66fc99e Initial load
duke
parents:
diff changeset
4767 perror("os::init_2 setrlimit failed");
a61af66fc99e Initial load
duke
parents:
diff changeset
4768 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4769 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4770 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4771
a61af66fc99e Initial load
duke
parents:
diff changeset
4772 // Initialize HPI.
a61af66fc99e Initial load
duke
parents:
diff changeset
4773 jint hpi_result = hpi::initialize();
a61af66fc99e Initial load
duke
parents:
diff changeset
4774 if (hpi_result != JNI_OK) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4775 tty->print_cr("There was an error trying to initialize the HPI library.");
a61af66fc99e Initial load
duke
parents:
diff changeset
4776 return hpi_result;
a61af66fc99e Initial load
duke
parents:
diff changeset
4777 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4778
a61af66fc99e Initial load
duke
parents:
diff changeset
4779 // Calculate theoretical max. size of Threads to guard gainst
a61af66fc99e Initial load
duke
parents:
diff changeset
4780 // artifical out-of-memory situations, where all available address-
a61af66fc99e Initial load
duke
parents:
diff changeset
4781 // space has been reserved by thread stacks. Default stack size is 1Mb.
a61af66fc99e Initial load
duke
parents:
diff changeset
4782 size_t pre_thread_stack_size = (JavaThread::stack_size_at_create()) ?
a61af66fc99e Initial load
duke
parents:
diff changeset
4783 JavaThread::stack_size_at_create() : (1*K*K);
a61af66fc99e Initial load
duke
parents:
diff changeset
4784 assert(pre_thread_stack_size != 0, "Must have a stack");
a61af66fc99e Initial load
duke
parents:
diff changeset
4785 // Solaris has a maximum of 4Gb of user programs. Calculate the thread limit when
a61af66fc99e Initial load
duke
parents:
diff changeset
4786 // we should start doing Virtual Memory banging. Currently when the threads will
a61af66fc99e Initial load
duke
parents:
diff changeset
4787 // have used all but 200Mb of space.
a61af66fc99e Initial load
duke
parents:
diff changeset
4788 size_t max_address_space = ((unsigned int)4 * K * K * K) - (200 * K * K);
a61af66fc99e Initial load
duke
parents:
diff changeset
4789 Solaris::_os_thread_limit = max_address_space / pre_thread_stack_size;
a61af66fc99e Initial load
duke
parents:
diff changeset
4790
a61af66fc99e Initial load
duke
parents:
diff changeset
4791 // at-exit methods are called in the reverse order of their registration.
a61af66fc99e Initial load
duke
parents:
diff changeset
4792 // In Solaris 7 and earlier, atexit functions are called on return from
a61af66fc99e Initial load
duke
parents:
diff changeset
4793 // main or as a result of a call to exit(3C). There can be only 32 of
a61af66fc99e Initial load
duke
parents:
diff changeset
4794 // these functions registered and atexit() does not set errno. In Solaris
a61af66fc99e Initial load
duke
parents:
diff changeset
4795 // 8 and later, there is no limit to the number of functions registered
a61af66fc99e Initial load
duke
parents:
diff changeset
4796 // and atexit() sets errno. In addition, in Solaris 8 and later, atexit
a61af66fc99e Initial load
duke
parents:
diff changeset
4797 // functions are called upon dlclose(3DL) in addition to return from main
a61af66fc99e Initial load
duke
parents:
diff changeset
4798 // and exit(3C).
a61af66fc99e Initial load
duke
parents:
diff changeset
4799
a61af66fc99e Initial load
duke
parents:
diff changeset
4800 if (PerfAllowAtExitRegistration) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4801 // only register atexit functions if PerfAllowAtExitRegistration is set.
a61af66fc99e Initial load
duke
parents:
diff changeset
4802 // atexit functions can be delayed until process exit time, which
a61af66fc99e Initial load
duke
parents:
diff changeset
4803 // can be problematic for embedded VM situations. Embedded VMs should
a61af66fc99e Initial load
duke
parents:
diff changeset
4804 // call DestroyJavaVM() to assure that VM resources are released.
a61af66fc99e Initial load
duke
parents:
diff changeset
4805
a61af66fc99e Initial load
duke
parents:
diff changeset
4806 // note: perfMemory_exit_helper atexit function may be removed in
a61af66fc99e Initial load
duke
parents:
diff changeset
4807 // the future if the appropriate cleanup code can be added to the
a61af66fc99e Initial load
duke
parents:
diff changeset
4808 // VM_Exit VMOperation's doit method.
a61af66fc99e Initial load
duke
parents:
diff changeset
4809 if (atexit(perfMemory_exit_helper) != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4810 warning("os::init2 atexit(perfMemory_exit_helper) failed");
a61af66fc99e Initial load
duke
parents:
diff changeset
4811 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4812 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4813
a61af66fc99e Initial load
duke
parents:
diff changeset
4814 // Init pset_loadavg function pointer
a61af66fc99e Initial load
duke
parents:
diff changeset
4815 init_pset_getloadavg_ptr();
a61af66fc99e Initial load
duke
parents:
diff changeset
4816
a61af66fc99e Initial load
duke
parents:
diff changeset
4817 return JNI_OK;
a61af66fc99e Initial load
duke
parents:
diff changeset
4818 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4819
a61af66fc99e Initial load
duke
parents:
diff changeset
4820
a61af66fc99e Initial load
duke
parents:
diff changeset
4821 // Mark the polling page as unreadable
a61af66fc99e Initial load
duke
parents:
diff changeset
4822 void os::make_polling_page_unreadable(void) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4823 if( mprotect((char *)_polling_page, page_size, PROT_NONE) != 0 )
a61af66fc99e Initial load
duke
parents:
diff changeset
4824 fatal("Could not disable polling page");
a61af66fc99e Initial load
duke
parents:
diff changeset
4825 };
a61af66fc99e Initial load
duke
parents:
diff changeset
4826
a61af66fc99e Initial load
duke
parents:
diff changeset
4827 // Mark the polling page as readable
a61af66fc99e Initial load
duke
parents:
diff changeset
4828 void os::make_polling_page_readable(void) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4829 if( mprotect((char *)_polling_page, page_size, PROT_READ) != 0 )
a61af66fc99e Initial load
duke
parents:
diff changeset
4830 fatal("Could not enable polling page");
a61af66fc99e Initial load
duke
parents:
diff changeset
4831 };
a61af66fc99e Initial load
duke
parents:
diff changeset
4832
a61af66fc99e Initial load
duke
parents:
diff changeset
4833 // OS interface.
a61af66fc99e Initial load
duke
parents:
diff changeset
4834
a61af66fc99e Initial load
duke
parents:
diff changeset
4835 int os::stat(const char *path, struct stat *sbuf) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4836 char pathbuf[MAX_PATH];
a61af66fc99e Initial load
duke
parents:
diff changeset
4837 if (strlen(path) > MAX_PATH - 1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4838 errno = ENAMETOOLONG;
a61af66fc99e Initial load
duke
parents:
diff changeset
4839 return -1;
a61af66fc99e Initial load
duke
parents:
diff changeset
4840 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4841 hpi::native_path(strcpy(pathbuf, path));
a61af66fc99e Initial load
duke
parents:
diff changeset
4842 return ::stat(pathbuf, sbuf);
a61af66fc99e Initial load
duke
parents:
diff changeset
4843 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4844
a61af66fc99e Initial load
duke
parents:
diff changeset
4845
a61af66fc99e Initial load
duke
parents:
diff changeset
4846 bool os::check_heap(bool force) { return true; }
a61af66fc99e Initial load
duke
parents:
diff changeset
4847
a61af66fc99e Initial load
duke
parents:
diff changeset
4848 typedef int (*vsnprintf_t)(char* buf, size_t count, const char* fmt, va_list argptr);
a61af66fc99e Initial load
duke
parents:
diff changeset
4849 static vsnprintf_t sol_vsnprintf = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
4850
a61af66fc99e Initial load
duke
parents:
diff changeset
4851 int local_vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4852 if (!sol_vsnprintf) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4853 //search for the named symbol in the objects that were loaded after libjvm
a61af66fc99e Initial load
duke
parents:
diff changeset
4854 void* where = RTLD_NEXT;
a61af66fc99e Initial load
duke
parents:
diff changeset
4855 if ((sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "__vsnprintf"))) == NULL)
a61af66fc99e Initial load
duke
parents:
diff changeset
4856 sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "vsnprintf"));
a61af66fc99e Initial load
duke
parents:
diff changeset
4857 if (!sol_vsnprintf){
a61af66fc99e Initial load
duke
parents:
diff changeset
4858 //search for the named symbol in the objects that were loaded before libjvm
a61af66fc99e Initial load
duke
parents:
diff changeset
4859 where = RTLD_DEFAULT;
a61af66fc99e Initial load
duke
parents:
diff changeset
4860 if ((sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "__vsnprintf"))) == NULL)
a61af66fc99e Initial load
duke
parents:
diff changeset
4861 sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "vsnprintf"));
a61af66fc99e Initial load
duke
parents:
diff changeset
4862 assert(sol_vsnprintf != NULL, "vsnprintf not found");
a61af66fc99e Initial load
duke
parents:
diff changeset
4863 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4864 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4865 return (*sol_vsnprintf)(buf, count, fmt, argptr);
a61af66fc99e Initial load
duke
parents:
diff changeset
4866 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4867
a61af66fc99e Initial load
duke
parents:
diff changeset
4868
a61af66fc99e Initial load
duke
parents:
diff changeset
4869 // Is a (classpath) directory empty?
a61af66fc99e Initial load
duke
parents:
diff changeset
4870 bool os::dir_is_empty(const char* path) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4871 DIR *dir = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
4872 struct dirent *ptr;
a61af66fc99e Initial load
duke
parents:
diff changeset
4873
a61af66fc99e Initial load
duke
parents:
diff changeset
4874 dir = opendir(path);
a61af66fc99e Initial load
duke
parents:
diff changeset
4875 if (dir == NULL) return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
4876
a61af66fc99e Initial load
duke
parents:
diff changeset
4877 /* Scan the directory */
a61af66fc99e Initial load
duke
parents:
diff changeset
4878 bool result = true;
a61af66fc99e Initial load
duke
parents:
diff changeset
4879 char buf[sizeof(struct dirent) + MAX_PATH];
a61af66fc99e Initial load
duke
parents:
diff changeset
4880 struct dirent *dbuf = (struct dirent *) buf;
a61af66fc99e Initial load
duke
parents:
diff changeset
4881 while (result && (ptr = readdir(dir, dbuf)) != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4882 if (strcmp(ptr->d_name, ".") != 0 && strcmp(ptr->d_name, "..") != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4883 result = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
4884 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4885 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4886 closedir(dir);
a61af66fc99e Initial load
duke
parents:
diff changeset
4887 return result;
a61af66fc99e Initial load
duke
parents:
diff changeset
4888 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4889
a61af66fc99e Initial load
duke
parents:
diff changeset
4890 // create binary file, rewriting existing file if required
a61af66fc99e Initial load
duke
parents:
diff changeset
4891 int os::create_binary_file(const char* path, bool rewrite_existing) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4892 int oflags = O_WRONLY | O_CREAT;
a61af66fc99e Initial load
duke
parents:
diff changeset
4893 if (!rewrite_existing) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4894 oflags |= O_EXCL;
a61af66fc99e Initial load
duke
parents:
diff changeset
4895 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4896 return ::open64(path, oflags, S_IREAD | S_IWRITE);
a61af66fc99e Initial load
duke
parents:
diff changeset
4897 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4898
a61af66fc99e Initial load
duke
parents:
diff changeset
4899 // return current position of file pointer
a61af66fc99e Initial load
duke
parents:
diff changeset
4900 jlong os::current_file_offset(int fd) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4901 return (jlong)::lseek64(fd, (off64_t)0, SEEK_CUR);
a61af66fc99e Initial load
duke
parents:
diff changeset
4902 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4903
a61af66fc99e Initial load
duke
parents:
diff changeset
4904 // move file pointer to the specified offset
a61af66fc99e Initial load
duke
parents:
diff changeset
4905 jlong os::seek_to_file_offset(int fd, jlong offset) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4906 return (jlong)::lseek64(fd, (off64_t)offset, SEEK_SET);
a61af66fc99e Initial load
duke
parents:
diff changeset
4907 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4908
a61af66fc99e Initial load
duke
parents:
diff changeset
4909 // Map a block of memory.
a61af66fc99e Initial load
duke
parents:
diff changeset
4910 char* os::map_memory(int fd, const char* file_name, size_t file_offset,
a61af66fc99e Initial load
duke
parents:
diff changeset
4911 char *addr, size_t bytes, bool read_only,
a61af66fc99e Initial load
duke
parents:
diff changeset
4912 bool allow_exec) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4913 int prot;
a61af66fc99e Initial load
duke
parents:
diff changeset
4914 int flags;
a61af66fc99e Initial load
duke
parents:
diff changeset
4915
a61af66fc99e Initial load
duke
parents:
diff changeset
4916 if (read_only) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4917 prot = PROT_READ;
a61af66fc99e Initial load
duke
parents:
diff changeset
4918 flags = MAP_SHARED;
a61af66fc99e Initial load
duke
parents:
diff changeset
4919 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
4920 prot = PROT_READ | PROT_WRITE;
a61af66fc99e Initial load
duke
parents:
diff changeset
4921 flags = MAP_PRIVATE;
a61af66fc99e Initial load
duke
parents:
diff changeset
4922 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4923
a61af66fc99e Initial load
duke
parents:
diff changeset
4924 if (allow_exec) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4925 prot |= PROT_EXEC;
a61af66fc99e Initial load
duke
parents:
diff changeset
4926 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4927
a61af66fc99e Initial load
duke
parents:
diff changeset
4928 if (addr != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4929 flags |= MAP_FIXED;
a61af66fc99e Initial load
duke
parents:
diff changeset
4930 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4931
a61af66fc99e Initial load
duke
parents:
diff changeset
4932 char* mapped_address = (char*)mmap(addr, (size_t)bytes, prot, flags,
a61af66fc99e Initial load
duke
parents:
diff changeset
4933 fd, file_offset);
a61af66fc99e Initial load
duke
parents:
diff changeset
4934 if (mapped_address == MAP_FAILED) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4935 return NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
4936 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4937 return mapped_address;
a61af66fc99e Initial load
duke
parents:
diff changeset
4938 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4939
a61af66fc99e Initial load
duke
parents:
diff changeset
4940
a61af66fc99e Initial load
duke
parents:
diff changeset
4941 // Remap a block of memory.
a61af66fc99e Initial load
duke
parents:
diff changeset
4942 char* os::remap_memory(int fd, const char* file_name, size_t file_offset,
a61af66fc99e Initial load
duke
parents:
diff changeset
4943 char *addr, size_t bytes, bool read_only,
a61af66fc99e Initial load
duke
parents:
diff changeset
4944 bool allow_exec) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4945 // same as map_memory() on this OS
a61af66fc99e Initial load
duke
parents:
diff changeset
4946 return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only,
a61af66fc99e Initial load
duke
parents:
diff changeset
4947 allow_exec);
a61af66fc99e Initial load
duke
parents:
diff changeset
4948 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4949
a61af66fc99e Initial load
duke
parents:
diff changeset
4950
a61af66fc99e Initial load
duke
parents:
diff changeset
4951 // Unmap a block of memory.
a61af66fc99e Initial load
duke
parents:
diff changeset
4952 bool os::unmap_memory(char* addr, size_t bytes) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4953 return munmap(addr, bytes) == 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
4954 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4955
a61af66fc99e Initial load
duke
parents:
diff changeset
4956 void os::pause() {
a61af66fc99e Initial load
duke
parents:
diff changeset
4957 char filename[MAX_PATH];
a61af66fc99e Initial load
duke
parents:
diff changeset
4958 if (PauseAtStartupFile && PauseAtStartupFile[0]) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4959 jio_snprintf(filename, MAX_PATH, PauseAtStartupFile);
a61af66fc99e Initial load
duke
parents:
diff changeset
4960 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
4961 jio_snprintf(filename, MAX_PATH, "./vm.paused.%d", current_process_id());
a61af66fc99e Initial load
duke
parents:
diff changeset
4962 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4963
a61af66fc99e Initial load
duke
parents:
diff changeset
4964 int fd = ::open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666);
a61af66fc99e Initial load
duke
parents:
diff changeset
4965 if (fd != -1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4966 struct stat buf;
a61af66fc99e Initial load
duke
parents:
diff changeset
4967 close(fd);
a61af66fc99e Initial load
duke
parents:
diff changeset
4968 while (::stat(filename, &buf) == 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
4969 (void)::poll(NULL, 0, 100);
a61af66fc99e Initial load
duke
parents:
diff changeset
4970 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4971 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
4972 jio_fprintf(stderr,
a61af66fc99e Initial load
duke
parents:
diff changeset
4973 "Could not open pause file '%s', continuing immediately.\n", filename);
a61af66fc99e Initial load
duke
parents:
diff changeset
4974 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4975 }
a61af66fc99e Initial load
duke
parents:
diff changeset
4976
a61af66fc99e Initial load
duke
parents:
diff changeset
4977 #ifndef PRODUCT
a61af66fc99e Initial load
duke
parents:
diff changeset
4978 #ifdef INTERPOSE_ON_SYSTEM_SYNCH_FUNCTIONS
a61af66fc99e Initial load
duke
parents:
diff changeset
4979 // Turn this on if you need to trace synch operations.
a61af66fc99e Initial load
duke
parents:
diff changeset
4980 // Set RECORD_SYNCH_LIMIT to a large-enough value,
a61af66fc99e Initial load
duke
parents:
diff changeset
4981 // and call record_synch_enable and record_synch_disable
a61af66fc99e Initial load
duke
parents:
diff changeset
4982 // around the computation of interest.
a61af66fc99e Initial load
duke
parents:
diff changeset
4983
a61af66fc99e Initial load
duke
parents:
diff changeset
4984 void record_synch(char* name, bool returning); // defined below
a61af66fc99e Initial load
duke
parents:
diff changeset
4985
a61af66fc99e Initial load
duke
parents:
diff changeset
4986 class RecordSynch {
a61af66fc99e Initial load
duke
parents:
diff changeset
4987 char* _name;
a61af66fc99e Initial load
duke
parents:
diff changeset
4988 public:
a61af66fc99e Initial load
duke
parents:
diff changeset
4989 RecordSynch(char* name) :_name(name)
a61af66fc99e Initial load
duke
parents:
diff changeset
4990 { record_synch(_name, false); }
a61af66fc99e Initial load
duke
parents:
diff changeset
4991 ~RecordSynch() { record_synch(_name, true); }
a61af66fc99e Initial load
duke
parents:
diff changeset
4992 };
a61af66fc99e Initial load
duke
parents:
diff changeset
4993
a61af66fc99e Initial load
duke
parents:
diff changeset
4994 #define CHECK_SYNCH_OP(ret, name, params, args, inner) \
a61af66fc99e Initial load
duke
parents:
diff changeset
4995 extern "C" ret name params { \
a61af66fc99e Initial load
duke
parents:
diff changeset
4996 typedef ret name##_t params; \
a61af66fc99e Initial load
duke
parents:
diff changeset
4997 static name##_t* implem = NULL; \
a61af66fc99e Initial load
duke
parents:
diff changeset
4998 static int callcount = 0; \
a61af66fc99e Initial load
duke
parents:
diff changeset
4999 if (implem == NULL) { \
a61af66fc99e Initial load
duke
parents:
diff changeset
5000 implem = (name##_t*) dlsym(RTLD_NEXT, #name); \
a61af66fc99e Initial load
duke
parents:
diff changeset
5001 if (implem == NULL) fatal(dlerror()); \
a61af66fc99e Initial load
duke
parents:
diff changeset
5002 } \
a61af66fc99e Initial load
duke
parents:
diff changeset
5003 ++callcount; \
a61af66fc99e Initial load
duke
parents:
diff changeset
5004 RecordSynch _rs(#name); \
a61af66fc99e Initial load
duke
parents:
diff changeset
5005 inner; \
a61af66fc99e Initial load
duke
parents:
diff changeset
5006 return implem args; \
a61af66fc99e Initial load
duke
parents:
diff changeset
5007 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5008 // in dbx, examine callcounts this way:
a61af66fc99e Initial load
duke
parents:
diff changeset
5009 // for n in $(eval whereis callcount | awk '{print $2}'); do print $n; done
a61af66fc99e Initial load
duke
parents:
diff changeset
5010
a61af66fc99e Initial load
duke
parents:
diff changeset
5011 #define CHECK_POINTER_OK(p) \
a61af66fc99e Initial load
duke
parents:
diff changeset
5012 (Universe::perm_gen() == NULL || !Universe::is_reserved_heap((oop)(p)))
a61af66fc99e Initial load
duke
parents:
diff changeset
5013 #define CHECK_MU \
a61af66fc99e Initial load
duke
parents:
diff changeset
5014 if (!CHECK_POINTER_OK(mu)) fatal("Mutex must be in C heap only.");
a61af66fc99e Initial load
duke
parents:
diff changeset
5015 #define CHECK_CV \
a61af66fc99e Initial load
duke
parents:
diff changeset
5016 if (!CHECK_POINTER_OK(cv)) fatal("Condvar must be in C heap only.");
a61af66fc99e Initial load
duke
parents:
diff changeset
5017 #define CHECK_P(p) \
a61af66fc99e Initial load
duke
parents:
diff changeset
5018 if (!CHECK_POINTER_OK(p)) fatal(false, "Pointer must be in C heap only.");
a61af66fc99e Initial load
duke
parents:
diff changeset
5019
a61af66fc99e Initial load
duke
parents:
diff changeset
5020 #define CHECK_MUTEX(mutex_op) \
a61af66fc99e Initial load
duke
parents:
diff changeset
5021 CHECK_SYNCH_OP(int, mutex_op, (mutex_t *mu), (mu), CHECK_MU);
a61af66fc99e Initial load
duke
parents:
diff changeset
5022
a61af66fc99e Initial load
duke
parents:
diff changeset
5023 CHECK_MUTEX( mutex_lock)
a61af66fc99e Initial load
duke
parents:
diff changeset
5024 CHECK_MUTEX( _mutex_lock)
a61af66fc99e Initial load
duke
parents:
diff changeset
5025 CHECK_MUTEX( mutex_unlock)
a61af66fc99e Initial load
duke
parents:
diff changeset
5026 CHECK_MUTEX(_mutex_unlock)
a61af66fc99e Initial load
duke
parents:
diff changeset
5027 CHECK_MUTEX( mutex_trylock)
a61af66fc99e Initial load
duke
parents:
diff changeset
5028 CHECK_MUTEX(_mutex_trylock)
a61af66fc99e Initial load
duke
parents:
diff changeset
5029
a61af66fc99e Initial load
duke
parents:
diff changeset
5030 #define CHECK_COND(cond_op) \
a61af66fc99e Initial load
duke
parents:
diff changeset
5031 CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu), (cv, mu), CHECK_MU;CHECK_CV);
a61af66fc99e Initial load
duke
parents:
diff changeset
5032
a61af66fc99e Initial load
duke
parents:
diff changeset
5033 CHECK_COND( cond_wait);
a61af66fc99e Initial load
duke
parents:
diff changeset
5034 CHECK_COND(_cond_wait);
a61af66fc99e Initial load
duke
parents:
diff changeset
5035 CHECK_COND(_cond_wait_cancel);
a61af66fc99e Initial load
duke
parents:
diff changeset
5036
a61af66fc99e Initial load
duke
parents:
diff changeset
5037 #define CHECK_COND2(cond_op) \
a61af66fc99e Initial load
duke
parents:
diff changeset
5038 CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu, timestruc_t* ts), (cv, mu, ts), CHECK_MU;CHECK_CV);
a61af66fc99e Initial load
duke
parents:
diff changeset
5039
a61af66fc99e Initial load
duke
parents:
diff changeset
5040 CHECK_COND2( cond_timedwait);
a61af66fc99e Initial load
duke
parents:
diff changeset
5041 CHECK_COND2(_cond_timedwait);
a61af66fc99e Initial load
duke
parents:
diff changeset
5042 CHECK_COND2(_cond_timedwait_cancel);
a61af66fc99e Initial load
duke
parents:
diff changeset
5043
a61af66fc99e Initial load
duke
parents:
diff changeset
5044 // do the _lwp_* versions too
a61af66fc99e Initial load
duke
parents:
diff changeset
5045 #define mutex_t lwp_mutex_t
a61af66fc99e Initial load
duke
parents:
diff changeset
5046 #define cond_t lwp_cond_t
a61af66fc99e Initial load
duke
parents:
diff changeset
5047 CHECK_MUTEX( _lwp_mutex_lock)
a61af66fc99e Initial load
duke
parents:
diff changeset
5048 CHECK_MUTEX( _lwp_mutex_unlock)
a61af66fc99e Initial load
duke
parents:
diff changeset
5049 CHECK_MUTEX( _lwp_mutex_trylock)
a61af66fc99e Initial load
duke
parents:
diff changeset
5050 CHECK_MUTEX( __lwp_mutex_lock)
a61af66fc99e Initial load
duke
parents:
diff changeset
5051 CHECK_MUTEX( __lwp_mutex_unlock)
a61af66fc99e Initial load
duke
parents:
diff changeset
5052 CHECK_MUTEX( __lwp_mutex_trylock)
a61af66fc99e Initial load
duke
parents:
diff changeset
5053 CHECK_MUTEX(___lwp_mutex_lock)
a61af66fc99e Initial load
duke
parents:
diff changeset
5054 CHECK_MUTEX(___lwp_mutex_unlock)
a61af66fc99e Initial load
duke
parents:
diff changeset
5055
a61af66fc99e Initial load
duke
parents:
diff changeset
5056 CHECK_COND( _lwp_cond_wait);
a61af66fc99e Initial load
duke
parents:
diff changeset
5057 CHECK_COND( __lwp_cond_wait);
a61af66fc99e Initial load
duke
parents:
diff changeset
5058 CHECK_COND(___lwp_cond_wait);
a61af66fc99e Initial load
duke
parents:
diff changeset
5059
a61af66fc99e Initial load
duke
parents:
diff changeset
5060 CHECK_COND2( _lwp_cond_timedwait);
a61af66fc99e Initial load
duke
parents:
diff changeset
5061 CHECK_COND2( __lwp_cond_timedwait);
a61af66fc99e Initial load
duke
parents:
diff changeset
5062 #undef mutex_t
a61af66fc99e Initial load
duke
parents:
diff changeset
5063 #undef cond_t
a61af66fc99e Initial load
duke
parents:
diff changeset
5064
a61af66fc99e Initial load
duke
parents:
diff changeset
5065 CHECK_SYNCH_OP(int, _lwp_suspend2, (int lwp, int *n), (lwp, n), 0);
a61af66fc99e Initial load
duke
parents:
diff changeset
5066 CHECK_SYNCH_OP(int,__lwp_suspend2, (int lwp, int *n), (lwp, n), 0);
a61af66fc99e Initial load
duke
parents:
diff changeset
5067 CHECK_SYNCH_OP(int, _lwp_kill, (int lwp, int n), (lwp, n), 0);
a61af66fc99e Initial load
duke
parents:
diff changeset
5068 CHECK_SYNCH_OP(int,__lwp_kill, (int lwp, int n), (lwp, n), 0);
a61af66fc99e Initial load
duke
parents:
diff changeset
5069 CHECK_SYNCH_OP(int, _lwp_sema_wait, (lwp_sema_t* p), (p), CHECK_P(p));
a61af66fc99e Initial load
duke
parents:
diff changeset
5070 CHECK_SYNCH_OP(int,__lwp_sema_wait, (lwp_sema_t* p), (p), CHECK_P(p));
a61af66fc99e Initial load
duke
parents:
diff changeset
5071 CHECK_SYNCH_OP(int, _lwp_cond_broadcast, (lwp_cond_t* cv), (cv), CHECK_CV);
a61af66fc99e Initial load
duke
parents:
diff changeset
5072 CHECK_SYNCH_OP(int,__lwp_cond_broadcast, (lwp_cond_t* cv), (cv), CHECK_CV);
a61af66fc99e Initial load
duke
parents:
diff changeset
5073
a61af66fc99e Initial load
duke
parents:
diff changeset
5074
a61af66fc99e Initial load
duke
parents:
diff changeset
5075 // recording machinery:
a61af66fc99e Initial load
duke
parents:
diff changeset
5076
a61af66fc99e Initial load
duke
parents:
diff changeset
5077 enum { RECORD_SYNCH_LIMIT = 200 };
a61af66fc99e Initial load
duke
parents:
diff changeset
5078 char* record_synch_name[RECORD_SYNCH_LIMIT];
a61af66fc99e Initial load
duke
parents:
diff changeset
5079 void* record_synch_arg0ptr[RECORD_SYNCH_LIMIT];
a61af66fc99e Initial load
duke
parents:
diff changeset
5080 bool record_synch_returning[RECORD_SYNCH_LIMIT];
a61af66fc99e Initial load
duke
parents:
diff changeset
5081 thread_t record_synch_thread[RECORD_SYNCH_LIMIT];
a61af66fc99e Initial load
duke
parents:
diff changeset
5082 int record_synch_count = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
5083 bool record_synch_enabled = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
5084
a61af66fc99e Initial load
duke
parents:
diff changeset
5085 // in dbx, examine recorded data this way:
a61af66fc99e Initial load
duke
parents:
diff changeset
5086 // for n in name arg0ptr returning thread; do print record_synch_$n[0..record_synch_count-1]; done
a61af66fc99e Initial load
duke
parents:
diff changeset
5087
a61af66fc99e Initial load
duke
parents:
diff changeset
5088 void record_synch(char* name, bool returning) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5089 if (record_synch_enabled) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5090 if (record_synch_count < RECORD_SYNCH_LIMIT) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5091 record_synch_name[record_synch_count] = name;
a61af66fc99e Initial load
duke
parents:
diff changeset
5092 record_synch_returning[record_synch_count] = returning;
a61af66fc99e Initial load
duke
parents:
diff changeset
5093 record_synch_thread[record_synch_count] = thr_self();
a61af66fc99e Initial load
duke
parents:
diff changeset
5094 record_synch_arg0ptr[record_synch_count] = &name;
a61af66fc99e Initial load
duke
parents:
diff changeset
5095 record_synch_count++;
a61af66fc99e Initial load
duke
parents:
diff changeset
5096 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5097 // put more checking code here:
a61af66fc99e Initial load
duke
parents:
diff changeset
5098 // ...
a61af66fc99e Initial load
duke
parents:
diff changeset
5099 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5100 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5101
a61af66fc99e Initial load
duke
parents:
diff changeset
5102 void record_synch_enable() {
a61af66fc99e Initial load
duke
parents:
diff changeset
5103 // start collecting trace data, if not already doing so
a61af66fc99e Initial load
duke
parents:
diff changeset
5104 if (!record_synch_enabled) record_synch_count = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
5105 record_synch_enabled = true;
a61af66fc99e Initial load
duke
parents:
diff changeset
5106 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5107
a61af66fc99e Initial load
duke
parents:
diff changeset
5108 void record_synch_disable() {
a61af66fc99e Initial load
duke
parents:
diff changeset
5109 // stop collecting trace data
a61af66fc99e Initial load
duke
parents:
diff changeset
5110 record_synch_enabled = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
5111 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5112
a61af66fc99e Initial load
duke
parents:
diff changeset
5113 #endif // INTERPOSE_ON_SYSTEM_SYNCH_FUNCTIONS
a61af66fc99e Initial load
duke
parents:
diff changeset
5114 #endif // PRODUCT
a61af66fc99e Initial load
duke
parents:
diff changeset
5115
a61af66fc99e Initial load
duke
parents:
diff changeset
5116 const intptr_t thr_time_off = (intptr_t)(&((prusage_t *)(NULL))->pr_utime);
a61af66fc99e Initial load
duke
parents:
diff changeset
5117 const intptr_t thr_time_size = (intptr_t)(&((prusage_t *)(NULL))->pr_ttime) -
a61af66fc99e Initial load
duke
parents:
diff changeset
5118 (intptr_t)(&((prusage_t *)(NULL))->pr_utime);
a61af66fc99e Initial load
duke
parents:
diff changeset
5119
a61af66fc99e Initial load
duke
parents:
diff changeset
5120
a61af66fc99e Initial load
duke
parents:
diff changeset
5121 // JVMTI & JVM monitoring and management support
a61af66fc99e Initial load
duke
parents:
diff changeset
5122 // The thread_cpu_time() and current_thread_cpu_time() are only
a61af66fc99e Initial load
duke
parents:
diff changeset
5123 // supported if is_thread_cpu_time_supported() returns true.
a61af66fc99e Initial load
duke
parents:
diff changeset
5124 // They are not supported on Solaris T1.
a61af66fc99e Initial load
duke
parents:
diff changeset
5125
a61af66fc99e Initial load
duke
parents:
diff changeset
5126 // current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool)
a61af66fc99e Initial load
duke
parents:
diff changeset
5127 // are used by JVM M&M and JVMTI to get user+sys or user CPU time
a61af66fc99e Initial load
duke
parents:
diff changeset
5128 // of a thread.
a61af66fc99e Initial load
duke
parents:
diff changeset
5129 //
a61af66fc99e Initial load
duke
parents:
diff changeset
5130 // current_thread_cpu_time() and thread_cpu_time(Thread *)
a61af66fc99e Initial load
duke
parents:
diff changeset
5131 // returns the fast estimate available on the platform.
a61af66fc99e Initial load
duke
parents:
diff changeset
5132
a61af66fc99e Initial load
duke
parents:
diff changeset
5133 // hrtime_t gethrvtime() return value includes
a61af66fc99e Initial load
duke
parents:
diff changeset
5134 // user time but does not include system time
a61af66fc99e Initial load
duke
parents:
diff changeset
5135 jlong os::current_thread_cpu_time() {
a61af66fc99e Initial load
duke
parents:
diff changeset
5136 return (jlong) gethrvtime();
a61af66fc99e Initial load
duke
parents:
diff changeset
5137 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5138
a61af66fc99e Initial load
duke
parents:
diff changeset
5139 jlong os::thread_cpu_time(Thread *thread) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5140 // return user level CPU time only to be consistent with
a61af66fc99e Initial load
duke
parents:
diff changeset
5141 // what current_thread_cpu_time returns.
a61af66fc99e Initial load
duke
parents:
diff changeset
5142 // thread_cpu_time_info() must be changed if this changes
a61af66fc99e Initial load
duke
parents:
diff changeset
5143 return os::thread_cpu_time(thread, false /* user time only */);
a61af66fc99e Initial load
duke
parents:
diff changeset
5144 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5145
a61af66fc99e Initial load
duke
parents:
diff changeset
5146 jlong os::current_thread_cpu_time(bool user_sys_cpu_time) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5147 if (user_sys_cpu_time) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5148 return os::thread_cpu_time(Thread::current(), user_sys_cpu_time);
a61af66fc99e Initial load
duke
parents:
diff changeset
5149 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
5150 return os::current_thread_cpu_time();
a61af66fc99e Initial load
duke
parents:
diff changeset
5151 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5152 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5153
a61af66fc99e Initial load
duke
parents:
diff changeset
5154 jlong os::thread_cpu_time(Thread *thread, bool user_sys_cpu_time) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5155 char proc_name[64];
a61af66fc99e Initial load
duke
parents:
diff changeset
5156 int count;
a61af66fc99e Initial load
duke
parents:
diff changeset
5157 prusage_t prusage;
a61af66fc99e Initial load
duke
parents:
diff changeset
5158 jlong lwp_time;
a61af66fc99e Initial load
duke
parents:
diff changeset
5159 int fd;
a61af66fc99e Initial load
duke
parents:
diff changeset
5160
a61af66fc99e Initial load
duke
parents:
diff changeset
5161 sprintf(proc_name, "/proc/%d/lwp/%d/lwpusage",
a61af66fc99e Initial load
duke
parents:
diff changeset
5162 getpid(),
a61af66fc99e Initial load
duke
parents:
diff changeset
5163 thread->osthread()->lwp_id());
a61af66fc99e Initial load
duke
parents:
diff changeset
5164 fd = open(proc_name, O_RDONLY);
a61af66fc99e Initial load
duke
parents:
diff changeset
5165 if ( fd == -1 ) return -1;
a61af66fc99e Initial load
duke
parents:
diff changeset
5166
a61af66fc99e Initial load
duke
parents:
diff changeset
5167 do {
a61af66fc99e Initial load
duke
parents:
diff changeset
5168 count = pread(fd,
a61af66fc99e Initial load
duke
parents:
diff changeset
5169 (void *)&prusage.pr_utime,
a61af66fc99e Initial load
duke
parents:
diff changeset
5170 thr_time_size,
a61af66fc99e Initial load
duke
parents:
diff changeset
5171 thr_time_off);
a61af66fc99e Initial load
duke
parents:
diff changeset
5172 } while (count < 0 && errno == EINTR);
a61af66fc99e Initial load
duke
parents:
diff changeset
5173 close(fd);
a61af66fc99e Initial load
duke
parents:
diff changeset
5174 if ( count < 0 ) return -1;
a61af66fc99e Initial load
duke
parents:
diff changeset
5175
a61af66fc99e Initial load
duke
parents:
diff changeset
5176 if (user_sys_cpu_time) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5177 // user + system CPU time
a61af66fc99e Initial load
duke
parents:
diff changeset
5178 lwp_time = (((jlong)prusage.pr_stime.tv_sec +
a61af66fc99e Initial load
duke
parents:
diff changeset
5179 (jlong)prusage.pr_utime.tv_sec) * (jlong)1000000000) +
a61af66fc99e Initial load
duke
parents:
diff changeset
5180 (jlong)prusage.pr_stime.tv_nsec +
a61af66fc99e Initial load
duke
parents:
diff changeset
5181 (jlong)prusage.pr_utime.tv_nsec;
a61af66fc99e Initial load
duke
parents:
diff changeset
5182 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
5183 // user level CPU time only
a61af66fc99e Initial load
duke
parents:
diff changeset
5184 lwp_time = ((jlong)prusage.pr_utime.tv_sec * (jlong)1000000000) +
a61af66fc99e Initial load
duke
parents:
diff changeset
5185 (jlong)prusage.pr_utime.tv_nsec;
a61af66fc99e Initial load
duke
parents:
diff changeset
5186 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5187
a61af66fc99e Initial load
duke
parents:
diff changeset
5188 return(lwp_time);
a61af66fc99e Initial load
duke
parents:
diff changeset
5189 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5190
a61af66fc99e Initial load
duke
parents:
diff changeset
5191 void os::current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5192 info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits
a61af66fc99e Initial load
duke
parents:
diff changeset
5193 info_ptr->may_skip_backward = false; // elapsed time not wall time
a61af66fc99e Initial load
duke
parents:
diff changeset
5194 info_ptr->may_skip_forward = false; // elapsed time not wall time
a61af66fc99e Initial load
duke
parents:
diff changeset
5195 info_ptr->kind = JVMTI_TIMER_USER_CPU; // only user time is returned
a61af66fc99e Initial load
duke
parents:
diff changeset
5196 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5197
a61af66fc99e Initial load
duke
parents:
diff changeset
5198 void os::thread_cpu_time_info(jvmtiTimerInfo *info_ptr) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5199 info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits
a61af66fc99e Initial load
duke
parents:
diff changeset
5200 info_ptr->may_skip_backward = false; // elapsed time not wall time
a61af66fc99e Initial load
duke
parents:
diff changeset
5201 info_ptr->may_skip_forward = false; // elapsed time not wall time
a61af66fc99e Initial load
duke
parents:
diff changeset
5202 info_ptr->kind = JVMTI_TIMER_USER_CPU; // only user time is returned
a61af66fc99e Initial load
duke
parents:
diff changeset
5203 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5204
a61af66fc99e Initial load
duke
parents:
diff changeset
5205 bool os::is_thread_cpu_time_supported() {
a61af66fc99e Initial load
duke
parents:
diff changeset
5206 if ( os::Solaris::T2_libthread() || UseBoundThreads ) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5207 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
5208 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
5209 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
5210 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5211 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5212
a61af66fc99e Initial load
duke
parents:
diff changeset
5213 // System loadavg support. Returns -1 if load average cannot be obtained.
a61af66fc99e Initial load
duke
parents:
diff changeset
5214 // Return the load average for our processor set if the primitive exists
a61af66fc99e Initial load
duke
parents:
diff changeset
5215 // (Solaris 9 and later). Otherwise just return system wide loadavg.
a61af66fc99e Initial load
duke
parents:
diff changeset
5216 int os::loadavg(double loadavg[], int nelem) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5217 if (pset_getloadavg_ptr != NULL) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5218 return (*pset_getloadavg_ptr)(PS_MYID, loadavg, nelem);
a61af66fc99e Initial load
duke
parents:
diff changeset
5219 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
5220 return ::getloadavg(loadavg, nelem);
a61af66fc99e Initial load
duke
parents:
diff changeset
5221 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5222 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5223
a61af66fc99e Initial load
duke
parents:
diff changeset
5224 //---------------------------------------------------------------------------------
a61af66fc99e Initial load
duke
parents:
diff changeset
5225 #ifndef PRODUCT
a61af66fc99e Initial load
duke
parents:
diff changeset
5226
a61af66fc99e Initial load
duke
parents:
diff changeset
5227 static address same_page(address x, address y) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5228 intptr_t page_bits = -os::vm_page_size();
a61af66fc99e Initial load
duke
parents:
diff changeset
5229 if ((intptr_t(x) & page_bits) == (intptr_t(y) & page_bits))
a61af66fc99e Initial load
duke
parents:
diff changeset
5230 return x;
a61af66fc99e Initial load
duke
parents:
diff changeset
5231 else if (x > y)
a61af66fc99e Initial load
duke
parents:
diff changeset
5232 return (address)(intptr_t(y) | ~page_bits) + 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
5233 else
a61af66fc99e Initial load
duke
parents:
diff changeset
5234 return (address)(intptr_t(y) & page_bits);
a61af66fc99e Initial load
duke
parents:
diff changeset
5235 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5236
a61af66fc99e Initial load
duke
parents:
diff changeset
5237 bool os::find(address addr) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5238 Dl_info dlinfo;
a61af66fc99e Initial load
duke
parents:
diff changeset
5239 memset(&dlinfo, 0, sizeof(dlinfo));
a61af66fc99e Initial load
duke
parents:
diff changeset
5240 if (dladdr(addr, &dlinfo)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5241 #ifdef _LP64
a61af66fc99e Initial load
duke
parents:
diff changeset
5242 tty->print("0x%016lx: ", addr);
a61af66fc99e Initial load
duke
parents:
diff changeset
5243 #else
a61af66fc99e Initial load
duke
parents:
diff changeset
5244 tty->print("0x%08x: ", addr);
a61af66fc99e Initial load
duke
parents:
diff changeset
5245 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
5246 if (dlinfo.dli_sname != NULL)
a61af66fc99e Initial load
duke
parents:
diff changeset
5247 tty->print("%s+%#lx", dlinfo.dli_sname, addr-(intptr_t)dlinfo.dli_saddr);
a61af66fc99e Initial load
duke
parents:
diff changeset
5248 else if (dlinfo.dli_fname)
a61af66fc99e Initial load
duke
parents:
diff changeset
5249 tty->print("<offset %#lx>", addr-(intptr_t)dlinfo.dli_fbase);
a61af66fc99e Initial load
duke
parents:
diff changeset
5250 else
a61af66fc99e Initial load
duke
parents:
diff changeset
5251 tty->print("<absolute address>");
a61af66fc99e Initial load
duke
parents:
diff changeset
5252 if (dlinfo.dli_fname) tty->print(" in %s", dlinfo.dli_fname);
a61af66fc99e Initial load
duke
parents:
diff changeset
5253 #ifdef _LP64
a61af66fc99e Initial load
duke
parents:
diff changeset
5254 if (dlinfo.dli_fbase) tty->print(" at 0x%016lx", dlinfo.dli_fbase);
a61af66fc99e Initial load
duke
parents:
diff changeset
5255 #else
a61af66fc99e Initial load
duke
parents:
diff changeset
5256 if (dlinfo.dli_fbase) tty->print(" at 0x%08x", dlinfo.dli_fbase);
a61af66fc99e Initial load
duke
parents:
diff changeset
5257 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
5258 tty->cr();
a61af66fc99e Initial load
duke
parents:
diff changeset
5259
a61af66fc99e Initial load
duke
parents:
diff changeset
5260 if (Verbose) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5261 // decode some bytes around the PC
a61af66fc99e Initial load
duke
parents:
diff changeset
5262 address begin = same_page(addr-40, addr);
a61af66fc99e Initial load
duke
parents:
diff changeset
5263 address end = same_page(addr+40, addr);
a61af66fc99e Initial load
duke
parents:
diff changeset
5264 address lowest = (address) dlinfo.dli_sname;
a61af66fc99e Initial load
duke
parents:
diff changeset
5265 if (!lowest) lowest = (address) dlinfo.dli_fbase;
a61af66fc99e Initial load
duke
parents:
diff changeset
5266 if (begin < lowest) begin = lowest;
a61af66fc99e Initial load
duke
parents:
diff changeset
5267 Dl_info dlinfo2;
a61af66fc99e Initial load
duke
parents:
diff changeset
5268 if (dladdr(end, &dlinfo2) && dlinfo2.dli_saddr != dlinfo.dli_saddr
a61af66fc99e Initial load
duke
parents:
diff changeset
5269 && end > dlinfo2.dli_saddr && dlinfo2.dli_saddr > begin)
a61af66fc99e Initial load
duke
parents:
diff changeset
5270 end = (address) dlinfo2.dli_saddr;
a61af66fc99e Initial load
duke
parents:
diff changeset
5271 Disassembler::decode(begin, end);
a61af66fc99e Initial load
duke
parents:
diff changeset
5272 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5273 return true;
a61af66fc99e Initial load
duke
parents:
diff changeset
5274 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5275 return false;
a61af66fc99e Initial load
duke
parents:
diff changeset
5276 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5277
a61af66fc99e Initial load
duke
parents:
diff changeset
5278 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
5279
a61af66fc99e Initial load
duke
parents:
diff changeset
5280
a61af66fc99e Initial load
duke
parents:
diff changeset
5281 // Following function has been added to support HotSparc's libjvm.so running
a61af66fc99e Initial load
duke
parents:
diff changeset
5282 // under Solaris production JDK 1.2.2 / 1.3.0. These came from
a61af66fc99e Initial load
duke
parents:
diff changeset
5283 // src/solaris/hpi/native_threads in the EVM codebase.
a61af66fc99e Initial load
duke
parents:
diff changeset
5284 //
a61af66fc99e Initial load
duke
parents:
diff changeset
5285 // NOTE: This is no longer needed in the 1.3.1 and 1.4 production release
a61af66fc99e Initial load
duke
parents:
diff changeset
5286 // libraries and should thus be removed. We will leave it behind for a while
a61af66fc99e Initial load
duke
parents:
diff changeset
5287 // until we no longer want to able to run on top of 1.3.0 Solaris production
a61af66fc99e Initial load
duke
parents:
diff changeset
5288 // JDK. See 4341971.
a61af66fc99e Initial load
duke
parents:
diff changeset
5289
a61af66fc99e Initial load
duke
parents:
diff changeset
5290 #define STACK_SLACK 0x800
a61af66fc99e Initial load
duke
parents:
diff changeset
5291
a61af66fc99e Initial load
duke
parents:
diff changeset
5292 extern "C" {
a61af66fc99e Initial load
duke
parents:
diff changeset
5293 intptr_t sysThreadAvailableStackWithSlack() {
a61af66fc99e Initial load
duke
parents:
diff changeset
5294 stack_t st;
a61af66fc99e Initial load
duke
parents:
diff changeset
5295 intptr_t retval, stack_top;
a61af66fc99e Initial load
duke
parents:
diff changeset
5296 retval = thr_stksegment(&st);
a61af66fc99e Initial load
duke
parents:
diff changeset
5297 assert(retval == 0, "incorrect return value from thr_stksegment");
a61af66fc99e Initial load
duke
parents:
diff changeset
5298 assert((address)&st < (address)st.ss_sp, "Invalid stack base returned");
a61af66fc99e Initial load
duke
parents:
diff changeset
5299 assert((address)&st > (address)st.ss_sp-st.ss_size, "Invalid stack size returned");
a61af66fc99e Initial load
duke
parents:
diff changeset
5300 stack_top=(intptr_t)st.ss_sp-st.ss_size;
a61af66fc99e Initial load
duke
parents:
diff changeset
5301 return ((intptr_t)&stack_top - stack_top - STACK_SLACK);
a61af66fc99e Initial load
duke
parents:
diff changeset
5302 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5303 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5304
a61af66fc99e Initial load
duke
parents:
diff changeset
5305 // Just to get the Kernel build to link on solaris for testing.
a61af66fc99e Initial load
duke
parents:
diff changeset
5306
a61af66fc99e Initial load
duke
parents:
diff changeset
5307 extern "C" {
a61af66fc99e Initial load
duke
parents:
diff changeset
5308 class ASGCT_CallTrace;
a61af66fc99e Initial load
duke
parents:
diff changeset
5309 void AsyncGetCallTrace(ASGCT_CallTrace *trace, jint depth, void* ucontext)
a61af66fc99e Initial load
duke
parents:
diff changeset
5310 KERNEL_RETURN;
a61af66fc99e Initial load
duke
parents:
diff changeset
5311 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5312
a61af66fc99e Initial load
duke
parents:
diff changeset
5313
a61af66fc99e Initial load
duke
parents:
diff changeset
5314 // ObjectMonitor park-unpark infrastructure ...
a61af66fc99e Initial load
duke
parents:
diff changeset
5315 //
a61af66fc99e Initial load
duke
parents:
diff changeset
5316 // We implement Solaris and Linux PlatformEvents with the
a61af66fc99e Initial load
duke
parents:
diff changeset
5317 // obvious condvar-mutex-flag triple.
a61af66fc99e Initial load
duke
parents:
diff changeset
5318 // Another alternative that works quite well is pipes:
a61af66fc99e Initial load
duke
parents:
diff changeset
5319 // Each PlatformEvent consists of a pipe-pair.
a61af66fc99e Initial load
duke
parents:
diff changeset
5320 // The thread associated with the PlatformEvent
a61af66fc99e Initial load
duke
parents:
diff changeset
5321 // calls park(), which reads from the input end of the pipe.
a61af66fc99e Initial load
duke
parents:
diff changeset
5322 // Unpark() writes into the other end of the pipe.
a61af66fc99e Initial load
duke
parents:
diff changeset
5323 // The write-side of the pipe must be set NDELAY.
a61af66fc99e Initial load
duke
parents:
diff changeset
5324 // Unfortunately pipes consume a large # of handles.
a61af66fc99e Initial load
duke
parents:
diff changeset
5325 // Native solaris lwp_park() and lwp_unpark() work nicely, too.
a61af66fc99e Initial load
duke
parents:
diff changeset
5326 // Using pipes for the 1st few threads might be workable, however.
a61af66fc99e Initial load
duke
parents:
diff changeset
5327 //
a61af66fc99e Initial load
duke
parents:
diff changeset
5328 // park() is permitted to return spuriously.
a61af66fc99e Initial load
duke
parents:
diff changeset
5329 // Callers of park() should wrap the call to park() in
a61af66fc99e Initial load
duke
parents:
diff changeset
5330 // an appropriate loop. A litmus test for the correct
a61af66fc99e Initial load
duke
parents:
diff changeset
5331 // usage of park is the following: if park() were modified
a61af66fc99e Initial load
duke
parents:
diff changeset
5332 // to immediately return 0 your code should still work,
a61af66fc99e Initial load
duke
parents:
diff changeset
5333 // albeit degenerating to a spin loop.
a61af66fc99e Initial load
duke
parents:
diff changeset
5334 //
a61af66fc99e Initial load
duke
parents:
diff changeset
5335 // An interesting optimization for park() is to use a trylock()
a61af66fc99e Initial load
duke
parents:
diff changeset
5336 // to attempt to acquire the mutex. If the trylock() fails
a61af66fc99e Initial load
duke
parents:
diff changeset
5337 // then we know that a concurrent unpark() operation is in-progress.
a61af66fc99e Initial load
duke
parents:
diff changeset
5338 // in that case the park() code could simply set _count to 0
a61af66fc99e Initial load
duke
parents:
diff changeset
5339 // and return immediately. The subsequent park() operation *might*
a61af66fc99e Initial load
duke
parents:
diff changeset
5340 // return immediately. That's harmless as the caller of park() is
a61af66fc99e Initial load
duke
parents:
diff changeset
5341 // expected to loop. By using trylock() we will have avoided a
a61af66fc99e Initial load
duke
parents:
diff changeset
5342 // avoided a context switch caused by contention on the per-thread mutex.
a61af66fc99e Initial load
duke
parents:
diff changeset
5343 //
a61af66fc99e Initial load
duke
parents:
diff changeset
5344 // TODO-FIXME:
a61af66fc99e Initial load
duke
parents:
diff changeset
5345 // 1. Reconcile Doug's JSR166 j.u.c park-unpark with the
a61af66fc99e Initial load
duke
parents:
diff changeset
5346 // objectmonitor implementation.
a61af66fc99e Initial load
duke
parents:
diff changeset
5347 // 2. Collapse the JSR166 parker event, and the
a61af66fc99e Initial load
duke
parents:
diff changeset
5348 // objectmonitor ParkEvent into a single "Event" construct.
a61af66fc99e Initial load
duke
parents:
diff changeset
5349 // 3. In park() and unpark() add:
a61af66fc99e Initial load
duke
parents:
diff changeset
5350 // assert (Thread::current() == AssociatedWith).
a61af66fc99e Initial load
duke
parents:
diff changeset
5351 // 4. add spurious wakeup injection on a -XX:EarlyParkReturn=N switch.
a61af66fc99e Initial load
duke
parents:
diff changeset
5352 // 1-out-of-N park() operations will return immediately.
a61af66fc99e Initial load
duke
parents:
diff changeset
5353 //
a61af66fc99e Initial load
duke
parents:
diff changeset
5354 // _Event transitions in park()
a61af66fc99e Initial load
duke
parents:
diff changeset
5355 // -1 => -1 : illegal
a61af66fc99e Initial load
duke
parents:
diff changeset
5356 // 1 => 0 : pass - return immediately
a61af66fc99e Initial load
duke
parents:
diff changeset
5357 // 0 => -1 : block
a61af66fc99e Initial load
duke
parents:
diff changeset
5358 //
a61af66fc99e Initial load
duke
parents:
diff changeset
5359 // _Event serves as a restricted-range semaphore.
a61af66fc99e Initial load
duke
parents:
diff changeset
5360 //
a61af66fc99e Initial load
duke
parents:
diff changeset
5361 // Another possible encoding of _Event would be with
a61af66fc99e Initial load
duke
parents:
diff changeset
5362 // explicit "PARKED" == 01b and "SIGNALED" == 10b bits.
a61af66fc99e Initial load
duke
parents:
diff changeset
5363 //
a61af66fc99e Initial load
duke
parents:
diff changeset
5364 // TODO-FIXME: add DTRACE probes for:
a61af66fc99e Initial load
duke
parents:
diff changeset
5365 // 1. Tx parks
a61af66fc99e Initial load
duke
parents:
diff changeset
5366 // 2. Ty unparks Tx
a61af66fc99e Initial load
duke
parents:
diff changeset
5367 // 3. Tx resumes from park
a61af66fc99e Initial load
duke
parents:
diff changeset
5368
a61af66fc99e Initial load
duke
parents:
diff changeset
5369
a61af66fc99e Initial load
duke
parents:
diff changeset
5370 // value determined through experimentation
a61af66fc99e Initial load
duke
parents:
diff changeset
5371 #define ROUNDINGFIX 11
a61af66fc99e Initial load
duke
parents:
diff changeset
5372
a61af66fc99e Initial load
duke
parents:
diff changeset
5373 // utility to compute the abstime argument to timedwait.
a61af66fc99e Initial load
duke
parents:
diff changeset
5374 // TODO-FIXME: switch from compute_abstime() to unpackTime().
a61af66fc99e Initial load
duke
parents:
diff changeset
5375
a61af66fc99e Initial load
duke
parents:
diff changeset
5376 static timestruc_t* compute_abstime(timestruc_t* abstime, jlong millis) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5377 // millis is the relative timeout time
a61af66fc99e Initial load
duke
parents:
diff changeset
5378 // abstime will be the absolute timeout time
a61af66fc99e Initial load
duke
parents:
diff changeset
5379 if (millis < 0) millis = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
5380 struct timeval now;
a61af66fc99e Initial load
duke
parents:
diff changeset
5381 int status = gettimeofday(&now, NULL);
a61af66fc99e Initial load
duke
parents:
diff changeset
5382 assert(status == 0, "gettimeofday");
a61af66fc99e Initial load
duke
parents:
diff changeset
5383 jlong seconds = millis / 1000;
a61af66fc99e Initial load
duke
parents:
diff changeset
5384 jlong max_wait_period;
a61af66fc99e Initial load
duke
parents:
diff changeset
5385
a61af66fc99e Initial load
duke
parents:
diff changeset
5386 if (UseLWPSynchronization) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5387 // forward port of fix for 4275818 (not sleeping long enough)
a61af66fc99e Initial load
duke
parents:
diff changeset
5388 // There was a bug in Solaris 6, 7 and pre-patch 5 of 8 where
a61af66fc99e Initial load
duke
parents:
diff changeset
5389 // _lwp_cond_timedwait() used a round_down algorithm rather
a61af66fc99e Initial load
duke
parents:
diff changeset
5390 // than a round_up. For millis less than our roundfactor
a61af66fc99e Initial load
duke
parents:
diff changeset
5391 // it rounded down to 0 which doesn't meet the spec.
a61af66fc99e Initial load
duke
parents:
diff changeset
5392 // For millis > roundfactor we may return a bit sooner, but
a61af66fc99e Initial load
duke
parents:
diff changeset
5393 // since we can not accurately identify the patch level and
a61af66fc99e Initial load
duke
parents:
diff changeset
5394 // this has already been fixed in Solaris 9 and 8 we will
a61af66fc99e Initial load
duke
parents:
diff changeset
5395 // leave it alone rather than always rounding down.
a61af66fc99e Initial load
duke
parents:
diff changeset
5396
a61af66fc99e Initial load
duke
parents:
diff changeset
5397 if (millis > 0 && millis < ROUNDINGFIX) millis = ROUNDINGFIX;
a61af66fc99e Initial load
duke
parents:
diff changeset
5398 // It appears that when we go directly through Solaris _lwp_cond_timedwait()
a61af66fc99e Initial load
duke
parents:
diff changeset
5399 // the acceptable max time threshold is smaller than for libthread on 2.5.1 and 2.6
a61af66fc99e Initial load
duke
parents:
diff changeset
5400 max_wait_period = 21000000;
a61af66fc99e Initial load
duke
parents:
diff changeset
5401 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
5402 max_wait_period = 50000000;
a61af66fc99e Initial load
duke
parents:
diff changeset
5403 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5404 millis %= 1000;
a61af66fc99e Initial load
duke
parents:
diff changeset
5405 if (seconds > max_wait_period) { // see man cond_timedwait(3T)
a61af66fc99e Initial load
duke
parents:
diff changeset
5406 seconds = max_wait_period;
a61af66fc99e Initial load
duke
parents:
diff changeset
5407 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5408 abstime->tv_sec = now.tv_sec + seconds;
a61af66fc99e Initial load
duke
parents:
diff changeset
5409 long usec = now.tv_usec + millis * 1000;
a61af66fc99e Initial load
duke
parents:
diff changeset
5410 if (usec >= 1000000) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5411 abstime->tv_sec += 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
5412 usec -= 1000000;
a61af66fc99e Initial load
duke
parents:
diff changeset
5413 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5414 abstime->tv_nsec = usec * 1000;
a61af66fc99e Initial load
duke
parents:
diff changeset
5415 return abstime;
a61af66fc99e Initial load
duke
parents:
diff changeset
5416 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5417
a61af66fc99e Initial load
duke
parents:
diff changeset
5418 // Test-and-clear _Event, always leaves _Event set to 0, returns immediately.
a61af66fc99e Initial load
duke
parents:
diff changeset
5419 // Conceptually TryPark() should be equivalent to park(0).
a61af66fc99e Initial load
duke
parents:
diff changeset
5420
a61af66fc99e Initial load
duke
parents:
diff changeset
5421 int os::PlatformEvent::TryPark() {
a61af66fc99e Initial load
duke
parents:
diff changeset
5422 for (;;) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5423 const int v = _Event ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5424 guarantee ((v == 0) || (v == 1), "invariant") ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5425 if (Atomic::cmpxchg (0, &_Event, v) == v) return v ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5426 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5427 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5428
a61af66fc99e Initial load
duke
parents:
diff changeset
5429 void os::PlatformEvent::park() { // AKA: down()
a61af66fc99e Initial load
duke
parents:
diff changeset
5430 // Invariant: Only the thread associated with the Event/PlatformEvent
a61af66fc99e Initial load
duke
parents:
diff changeset
5431 // may call park().
a61af66fc99e Initial load
duke
parents:
diff changeset
5432 int v ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5433 for (;;) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5434 v = _Event ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5435 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5436 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5437 guarantee (v >= 0, "invariant") ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5438 if (v == 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5439 // Do this the hard way by blocking ...
a61af66fc99e Initial load
duke
parents:
diff changeset
5440 // See http://monaco.sfbay/detail.jsf?cr=5094058.
a61af66fc99e Initial load
duke
parents:
diff changeset
5441 // TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking.
a61af66fc99e Initial load
duke
parents:
diff changeset
5442 // Only for SPARC >= V8PlusA
a61af66fc99e Initial load
duke
parents:
diff changeset
5443 #if defined(__sparc) && defined(COMPILER2)
a61af66fc99e Initial load
duke
parents:
diff changeset
5444 if (ClearFPUAtPark) { _mark_fpu_nosave() ; }
a61af66fc99e Initial load
duke
parents:
diff changeset
5445 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
5446 int status = os::Solaris::mutex_lock(_mutex);
a61af66fc99e Initial load
duke
parents:
diff changeset
5447 assert_status(status == 0, status, "mutex_lock");
a61af66fc99e Initial load
duke
parents:
diff changeset
5448 guarantee (_nParked == 0, "invariant") ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5449 ++ _nParked ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5450 while (_Event < 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5451 // for some reason, under 2.7 lwp_cond_wait() may return ETIME ...
a61af66fc99e Initial load
duke
parents:
diff changeset
5452 // Treat this the same as if the wait was interrupted
a61af66fc99e Initial load
duke
parents:
diff changeset
5453 // With usr/lib/lwp going to kernel, always handle ETIME
a61af66fc99e Initial load
duke
parents:
diff changeset
5454 status = os::Solaris::cond_wait(_cond, _mutex);
a61af66fc99e Initial load
duke
parents:
diff changeset
5455 if (status == ETIME) status = EINTR ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5456 assert_status(status == 0 || status == EINTR, status, "cond_wait");
a61af66fc99e Initial load
duke
parents:
diff changeset
5457 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5458 -- _nParked ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5459 _Event = 0 ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5460 status = os::Solaris::mutex_unlock(_mutex);
a61af66fc99e Initial load
duke
parents:
diff changeset
5461 assert_status(status == 0, status, "mutex_unlock");
a61af66fc99e Initial load
duke
parents:
diff changeset
5462 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5463 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5464
a61af66fc99e Initial load
duke
parents:
diff changeset
5465 int os::PlatformEvent::park(jlong millis) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5466 guarantee (_nParked == 0, "invariant") ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5467 int v ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5468 for (;;) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5469 v = _Event ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5470 if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5471 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5472 guarantee (v >= 0, "invariant") ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5473 if (v != 0) return OS_OK ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5474
a61af66fc99e Initial load
duke
parents:
diff changeset
5475 int ret = OS_TIMEOUT;
a61af66fc99e Initial load
duke
parents:
diff changeset
5476 timestruc_t abst;
a61af66fc99e Initial load
duke
parents:
diff changeset
5477 compute_abstime (&abst, millis);
a61af66fc99e Initial load
duke
parents:
diff changeset
5478
a61af66fc99e Initial load
duke
parents:
diff changeset
5479 // See http://monaco.sfbay/detail.jsf?cr=5094058.
a61af66fc99e Initial load
duke
parents:
diff changeset
5480 // For Solaris SPARC set fprs.FEF=0 prior to parking.
a61af66fc99e Initial load
duke
parents:
diff changeset
5481 // Only for SPARC >= V8PlusA
a61af66fc99e Initial load
duke
parents:
diff changeset
5482 #if defined(__sparc) && defined(COMPILER2)
a61af66fc99e Initial load
duke
parents:
diff changeset
5483 if (ClearFPUAtPark) { _mark_fpu_nosave() ; }
a61af66fc99e Initial load
duke
parents:
diff changeset
5484 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
5485 int status = os::Solaris::mutex_lock(_mutex);
a61af66fc99e Initial load
duke
parents:
diff changeset
5486 assert_status(status == 0, status, "mutex_lock");
a61af66fc99e Initial load
duke
parents:
diff changeset
5487 guarantee (_nParked == 0, "invariant") ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5488 ++ _nParked ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5489 while (_Event < 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5490 int status = os::Solaris::cond_timedwait(_cond, _mutex, &abst);
a61af66fc99e Initial load
duke
parents:
diff changeset
5491 assert_status(status == 0 || status == EINTR ||
a61af66fc99e Initial load
duke
parents:
diff changeset
5492 status == ETIME || status == ETIMEDOUT,
a61af66fc99e Initial load
duke
parents:
diff changeset
5493 status, "cond_timedwait");
a61af66fc99e Initial load
duke
parents:
diff changeset
5494 if (!FilterSpuriousWakeups) break ; // previous semantics
a61af66fc99e Initial load
duke
parents:
diff changeset
5495 if (status == ETIME || status == ETIMEDOUT) break ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5496 // We consume and ignore EINTR and spurious wakeups.
a61af66fc99e Initial load
duke
parents:
diff changeset
5497 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5498 -- _nParked ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5499 if (_Event >= 0) ret = OS_OK ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5500 _Event = 0 ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5501 status = os::Solaris::mutex_unlock(_mutex);
a61af66fc99e Initial load
duke
parents:
diff changeset
5502 assert_status(status == 0, status, "mutex_unlock");
a61af66fc99e Initial load
duke
parents:
diff changeset
5503 return ret;
a61af66fc99e Initial load
duke
parents:
diff changeset
5504 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5505
a61af66fc99e Initial load
duke
parents:
diff changeset
5506 void os::PlatformEvent::unpark() {
a61af66fc99e Initial load
duke
parents:
diff changeset
5507 int v, AnyWaiters;
a61af66fc99e Initial load
duke
parents:
diff changeset
5508
a61af66fc99e Initial load
duke
parents:
diff changeset
5509 // Increment _Event.
a61af66fc99e Initial load
duke
parents:
diff changeset
5510 // Another acceptable implementation would be to simply swap 1
a61af66fc99e Initial load
duke
parents:
diff changeset
5511 // into _Event:
a61af66fc99e Initial load
duke
parents:
diff changeset
5512 // if (Swap (&_Event, 1) < 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5513 // mutex_lock (_mutex) ; AnyWaiters = nParked; mutex_unlock (_mutex) ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5514 // if (AnyWaiters) cond_signal (_cond) ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5515 // }
a61af66fc99e Initial load
duke
parents:
diff changeset
5516
a61af66fc99e Initial load
duke
parents:
diff changeset
5517 for (;;) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5518 v = _Event ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5519 if (v > 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5520 // The LD of _Event could have reordered or be satisfied
a61af66fc99e Initial load
duke
parents:
diff changeset
5521 // by a read-aside from this processor's write buffer.
a61af66fc99e Initial load
duke
parents:
diff changeset
5522 // To avoid problems execute a barrier and then
a61af66fc99e Initial load
duke
parents:
diff changeset
5523 // ratify the value. A degenerate CAS() would also work.
a61af66fc99e Initial load
duke
parents:
diff changeset
5524 // Viz., CAS (v+0, &_Event, v) == v).
a61af66fc99e Initial load
duke
parents:
diff changeset
5525 OrderAccess::fence() ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5526 if (_Event == v) return ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5527 continue ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5528 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5529 if (Atomic::cmpxchg (v+1, &_Event, v) == v) break ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5530 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5531
a61af66fc99e Initial load
duke
parents:
diff changeset
5532 // If the thread associated with the event was parked, wake it.
a61af66fc99e Initial load
duke
parents:
diff changeset
5533 if (v < 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5534 int status ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5535 // Wait for the thread assoc with the PlatformEvent to vacate.
a61af66fc99e Initial load
duke
parents:
diff changeset
5536 status = os::Solaris::mutex_lock(_mutex);
a61af66fc99e Initial load
duke
parents:
diff changeset
5537 assert_status(status == 0, status, "mutex_lock");
a61af66fc99e Initial load
duke
parents:
diff changeset
5538 AnyWaiters = _nParked ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5539 status = os::Solaris::mutex_unlock(_mutex);
a61af66fc99e Initial load
duke
parents:
diff changeset
5540 assert_status(status == 0, status, "mutex_unlock");
a61af66fc99e Initial load
duke
parents:
diff changeset
5541 guarantee (AnyWaiters == 0 || AnyWaiters == 1, "invariant") ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5542 if (AnyWaiters != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5543 // We intentional signal *after* dropping the lock
a61af66fc99e Initial load
duke
parents:
diff changeset
5544 // to avoid a common class of futile wakeups.
a61af66fc99e Initial load
duke
parents:
diff changeset
5545 status = os::Solaris::cond_signal(_cond);
a61af66fc99e Initial load
duke
parents:
diff changeset
5546 assert_status(status == 0, status, "cond_signal");
a61af66fc99e Initial load
duke
parents:
diff changeset
5547 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5548 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5549 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5550
a61af66fc99e Initial load
duke
parents:
diff changeset
5551 // JSR166
a61af66fc99e Initial load
duke
parents:
diff changeset
5552 // -------------------------------------------------------
a61af66fc99e Initial load
duke
parents:
diff changeset
5553
a61af66fc99e Initial load
duke
parents:
diff changeset
5554 /*
a61af66fc99e Initial load
duke
parents:
diff changeset
5555 * The solaris and linux implementations of park/unpark are fairly
a61af66fc99e Initial load
duke
parents:
diff changeset
5556 * conservative for now, but can be improved. They currently use a
a61af66fc99e Initial load
duke
parents:
diff changeset
5557 * mutex/condvar pair, plus _counter.
a61af66fc99e Initial load
duke
parents:
diff changeset
5558 * Park decrements _counter if > 0, else does a condvar wait. Unpark
a61af66fc99e Initial load
duke
parents:
diff changeset
5559 * sets count to 1 and signals condvar. Only one thread ever waits
a61af66fc99e Initial load
duke
parents:
diff changeset
5560 * on the condvar. Contention seen when trying to park implies that someone
a61af66fc99e Initial load
duke
parents:
diff changeset
5561 * is unparking you, so don't wait. And spurious returns are fine, so there
a61af66fc99e Initial load
duke
parents:
diff changeset
5562 * is no need to track notifications.
a61af66fc99e Initial load
duke
parents:
diff changeset
5563 */
a61af66fc99e Initial load
duke
parents:
diff changeset
5564
a61af66fc99e Initial load
duke
parents:
diff changeset
5565 #define NANOSECS_PER_SEC 1000000000
a61af66fc99e Initial load
duke
parents:
diff changeset
5566 #define NANOSECS_PER_MILLISEC 1000000
a61af66fc99e Initial load
duke
parents:
diff changeset
5567 #define MAX_SECS 100000000
a61af66fc99e Initial load
duke
parents:
diff changeset
5568
a61af66fc99e Initial load
duke
parents:
diff changeset
5569 /*
a61af66fc99e Initial load
duke
parents:
diff changeset
5570 * This code is common to linux and solaris and will be moved to a
a61af66fc99e Initial load
duke
parents:
diff changeset
5571 * common place in dolphin.
a61af66fc99e Initial load
duke
parents:
diff changeset
5572 *
a61af66fc99e Initial load
duke
parents:
diff changeset
5573 * The passed in time value is either a relative time in nanoseconds
a61af66fc99e Initial load
duke
parents:
diff changeset
5574 * or an absolute time in milliseconds. Either way it has to be unpacked
a61af66fc99e Initial load
duke
parents:
diff changeset
5575 * into suitable seconds and nanoseconds components and stored in the
a61af66fc99e Initial load
duke
parents:
diff changeset
5576 * given timespec structure.
a61af66fc99e Initial load
duke
parents:
diff changeset
5577 * Given time is a 64-bit value and the time_t used in the timespec is only
a61af66fc99e Initial load
duke
parents:
diff changeset
5578 * a signed-32-bit value (except on 64-bit Linux) we have to watch for
a61af66fc99e Initial load
duke
parents:
diff changeset
5579 * overflow if times way in the future are given. Further on Solaris versions
a61af66fc99e Initial load
duke
parents:
diff changeset
5580 * prior to 10 there is a restriction (see cond_timedwait) that the specified
a61af66fc99e Initial load
duke
parents:
diff changeset
5581 * number of seconds, in abstime, is less than current_time + 100,000,000.
a61af66fc99e Initial load
duke
parents:
diff changeset
5582 * As it will be 28 years before "now + 100000000" will overflow we can
a61af66fc99e Initial load
duke
parents:
diff changeset
5583 * ignore overflow and just impose a hard-limit on seconds using the value
a61af66fc99e Initial load
duke
parents:
diff changeset
5584 * of "now + 100,000,000". This places a limit on the timeout of about 3.17
a61af66fc99e Initial load
duke
parents:
diff changeset
5585 * years from "now".
a61af66fc99e Initial load
duke
parents:
diff changeset
5586 */
a61af66fc99e Initial load
duke
parents:
diff changeset
5587 static void unpackTime(timespec* absTime, bool isAbsolute, jlong time) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5588 assert (time > 0, "convertTime");
a61af66fc99e Initial load
duke
parents:
diff changeset
5589
a61af66fc99e Initial load
duke
parents:
diff changeset
5590 struct timeval now;
a61af66fc99e Initial load
duke
parents:
diff changeset
5591 int status = gettimeofday(&now, NULL);
a61af66fc99e Initial load
duke
parents:
diff changeset
5592 assert(status == 0, "gettimeofday");
a61af66fc99e Initial load
duke
parents:
diff changeset
5593
a61af66fc99e Initial load
duke
parents:
diff changeset
5594 time_t max_secs = now.tv_sec + MAX_SECS;
a61af66fc99e Initial load
duke
parents:
diff changeset
5595
a61af66fc99e Initial load
duke
parents:
diff changeset
5596 if (isAbsolute) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5597 jlong secs = time / 1000;
a61af66fc99e Initial load
duke
parents:
diff changeset
5598 if (secs > max_secs) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5599 absTime->tv_sec = max_secs;
a61af66fc99e Initial load
duke
parents:
diff changeset
5600 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5601 else {
a61af66fc99e Initial load
duke
parents:
diff changeset
5602 absTime->tv_sec = secs;
a61af66fc99e Initial load
duke
parents:
diff changeset
5603 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5604 absTime->tv_nsec = (time % 1000) * NANOSECS_PER_MILLISEC;
a61af66fc99e Initial load
duke
parents:
diff changeset
5605 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5606 else {
a61af66fc99e Initial load
duke
parents:
diff changeset
5607 jlong secs = time / NANOSECS_PER_SEC;
a61af66fc99e Initial load
duke
parents:
diff changeset
5608 if (secs >= MAX_SECS) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5609 absTime->tv_sec = max_secs;
a61af66fc99e Initial load
duke
parents:
diff changeset
5610 absTime->tv_nsec = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
5611 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5612 else {
a61af66fc99e Initial load
duke
parents:
diff changeset
5613 absTime->tv_sec = now.tv_sec + secs;
a61af66fc99e Initial load
duke
parents:
diff changeset
5614 absTime->tv_nsec = (time % NANOSECS_PER_SEC) + now.tv_usec*1000;
a61af66fc99e Initial load
duke
parents:
diff changeset
5615 if (absTime->tv_nsec >= NANOSECS_PER_SEC) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5616 absTime->tv_nsec -= NANOSECS_PER_SEC;
a61af66fc99e Initial load
duke
parents:
diff changeset
5617 ++absTime->tv_sec; // note: this must be <= max_secs
a61af66fc99e Initial load
duke
parents:
diff changeset
5618 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5619 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5620 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5621 assert(absTime->tv_sec >= 0, "tv_sec < 0");
a61af66fc99e Initial load
duke
parents:
diff changeset
5622 assert(absTime->tv_sec <= max_secs, "tv_sec > max_secs");
a61af66fc99e Initial load
duke
parents:
diff changeset
5623 assert(absTime->tv_nsec >= 0, "tv_nsec < 0");
a61af66fc99e Initial load
duke
parents:
diff changeset
5624 assert(absTime->tv_nsec < NANOSECS_PER_SEC, "tv_nsec >= nanos_per_sec");
a61af66fc99e Initial load
duke
parents:
diff changeset
5625 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5626
a61af66fc99e Initial load
duke
parents:
diff changeset
5627 void Parker::park(bool isAbsolute, jlong time) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5628
a61af66fc99e Initial load
duke
parents:
diff changeset
5629 // Optional fast-path check:
a61af66fc99e Initial load
duke
parents:
diff changeset
5630 // Return immediately if a permit is available.
a61af66fc99e Initial load
duke
parents:
diff changeset
5631 if (_counter > 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5632 _counter = 0 ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5633 return ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5634 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5635
a61af66fc99e Initial load
duke
parents:
diff changeset
5636 // Optional fast-exit: Check interrupt before trying to wait
a61af66fc99e Initial load
duke
parents:
diff changeset
5637 Thread* thread = Thread::current();
a61af66fc99e Initial load
duke
parents:
diff changeset
5638 assert(thread->is_Java_thread(), "Must be JavaThread");
a61af66fc99e Initial load
duke
parents:
diff changeset
5639 JavaThread *jt = (JavaThread *)thread;
a61af66fc99e Initial load
duke
parents:
diff changeset
5640 if (Thread::is_interrupted(thread, false)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5641 return;
a61af66fc99e Initial load
duke
parents:
diff changeset
5642 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5643
a61af66fc99e Initial load
duke
parents:
diff changeset
5644 // First, demultiplex/decode time arguments
a61af66fc99e Initial load
duke
parents:
diff changeset
5645 timespec absTime;
a61af66fc99e Initial load
duke
parents:
diff changeset
5646 if (time < 0) { // don't wait at all
a61af66fc99e Initial load
duke
parents:
diff changeset
5647 return;
a61af66fc99e Initial load
duke
parents:
diff changeset
5648 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5649 if (time > 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5650 // Warning: this code might be exposed to the old Solaris time
a61af66fc99e Initial load
duke
parents:
diff changeset
5651 // round-down bugs. Grep "roundingFix" for details.
a61af66fc99e Initial load
duke
parents:
diff changeset
5652 unpackTime(&absTime, isAbsolute, time);
a61af66fc99e Initial load
duke
parents:
diff changeset
5653 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5654
a61af66fc99e Initial load
duke
parents:
diff changeset
5655 // Enter safepoint region
a61af66fc99e Initial load
duke
parents:
diff changeset
5656 // Beware of deadlocks such as 6317397.
a61af66fc99e Initial load
duke
parents:
diff changeset
5657 // The per-thread Parker:: _mutex is a classic leaf-lock.
a61af66fc99e Initial load
duke
parents:
diff changeset
5658 // In particular a thread must never block on the Threads_lock while
a61af66fc99e Initial load
duke
parents:
diff changeset
5659 // holding the Parker:: mutex. If safepoints are pending both the
a61af66fc99e Initial load
duke
parents:
diff changeset
5660 // the ThreadBlockInVM() CTOR and DTOR may grab Threads_lock.
a61af66fc99e Initial load
duke
parents:
diff changeset
5661 ThreadBlockInVM tbivm(jt);
a61af66fc99e Initial load
duke
parents:
diff changeset
5662
a61af66fc99e Initial load
duke
parents:
diff changeset
5663 // Don't wait if cannot get lock since interference arises from
a61af66fc99e Initial load
duke
parents:
diff changeset
5664 // unblocking. Also. check interrupt before trying wait
a61af66fc99e Initial load
duke
parents:
diff changeset
5665 if (Thread::is_interrupted(thread, false) ||
a61af66fc99e Initial load
duke
parents:
diff changeset
5666 os::Solaris::mutex_trylock(_mutex) != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5667 return;
a61af66fc99e Initial load
duke
parents:
diff changeset
5668 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5669
a61af66fc99e Initial load
duke
parents:
diff changeset
5670 int status ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5671
a61af66fc99e Initial load
duke
parents:
diff changeset
5672 if (_counter > 0) { // no wait needed
a61af66fc99e Initial load
duke
parents:
diff changeset
5673 _counter = 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
5674 status = os::Solaris::mutex_unlock(_mutex);
a61af66fc99e Initial load
duke
parents:
diff changeset
5675 assert (status == 0, "invariant") ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5676 return;
a61af66fc99e Initial load
duke
parents:
diff changeset
5677 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5678
a61af66fc99e Initial load
duke
parents:
diff changeset
5679 #ifdef ASSERT
a61af66fc99e Initial load
duke
parents:
diff changeset
5680 // Don't catch signals while blocked; let the running threads have the signals.
a61af66fc99e Initial load
duke
parents:
diff changeset
5681 // (This allows a debugger to break into the running thread.)
a61af66fc99e Initial load
duke
parents:
diff changeset
5682 sigset_t oldsigs;
a61af66fc99e Initial load
duke
parents:
diff changeset
5683 sigset_t* allowdebug_blocked = os::Solaris::allowdebug_blocked_signals();
a61af66fc99e Initial load
duke
parents:
diff changeset
5684 thr_sigsetmask(SIG_BLOCK, allowdebug_blocked, &oldsigs);
a61af66fc99e Initial load
duke
parents:
diff changeset
5685 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
5686
a61af66fc99e Initial load
duke
parents:
diff changeset
5687 OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */);
a61af66fc99e Initial load
duke
parents:
diff changeset
5688 jt->set_suspend_equivalent();
a61af66fc99e Initial load
duke
parents:
diff changeset
5689 // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self()
a61af66fc99e Initial load
duke
parents:
diff changeset
5690
a61af66fc99e Initial load
duke
parents:
diff changeset
5691 // Do this the hard way by blocking ...
a61af66fc99e Initial load
duke
parents:
diff changeset
5692 // See http://monaco.sfbay/detail.jsf?cr=5094058.
a61af66fc99e Initial load
duke
parents:
diff changeset
5693 // TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking.
a61af66fc99e Initial load
duke
parents:
diff changeset
5694 // Only for SPARC >= V8PlusA
a61af66fc99e Initial load
duke
parents:
diff changeset
5695 #if defined(__sparc) && defined(COMPILER2)
a61af66fc99e Initial load
duke
parents:
diff changeset
5696 if (ClearFPUAtPark) { _mark_fpu_nosave() ; }
a61af66fc99e Initial load
duke
parents:
diff changeset
5697 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
5698
a61af66fc99e Initial load
duke
parents:
diff changeset
5699 if (time == 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5700 status = os::Solaris::cond_wait (_cond, _mutex) ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5701 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
5702 status = os::Solaris::cond_timedwait (_cond, _mutex, &absTime);
a61af66fc99e Initial load
duke
parents:
diff changeset
5703 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5704 // Note that an untimed cond_wait() can sometimes return ETIME on older
a61af66fc99e Initial load
duke
parents:
diff changeset
5705 // versions of the Solaris.
a61af66fc99e Initial load
duke
parents:
diff changeset
5706 assert_status(status == 0 || status == EINTR ||
a61af66fc99e Initial load
duke
parents:
diff changeset
5707 status == ETIME || status == ETIMEDOUT,
a61af66fc99e Initial load
duke
parents:
diff changeset
5708 status, "cond_timedwait");
a61af66fc99e Initial load
duke
parents:
diff changeset
5709
a61af66fc99e Initial load
duke
parents:
diff changeset
5710 #ifdef ASSERT
a61af66fc99e Initial load
duke
parents:
diff changeset
5711 thr_sigsetmask(SIG_SETMASK, &oldsigs, NULL);
a61af66fc99e Initial load
duke
parents:
diff changeset
5712 #endif
a61af66fc99e Initial load
duke
parents:
diff changeset
5713 _counter = 0 ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5714 status = os::Solaris::mutex_unlock(_mutex);
a61af66fc99e Initial load
duke
parents:
diff changeset
5715 assert_status(status == 0, status, "mutex_unlock") ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5716
a61af66fc99e Initial load
duke
parents:
diff changeset
5717 // If externally suspended while waiting, re-suspend
a61af66fc99e Initial load
duke
parents:
diff changeset
5718 if (jt->handle_special_suspend_equivalent_condition()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5719 jt->java_suspend_self();
a61af66fc99e Initial load
duke
parents:
diff changeset
5720 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5721
a61af66fc99e Initial load
duke
parents:
diff changeset
5722 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5723
a61af66fc99e Initial load
duke
parents:
diff changeset
5724 void Parker::unpark() {
a61af66fc99e Initial load
duke
parents:
diff changeset
5725 int s, status ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5726 status = os::Solaris::mutex_lock (_mutex) ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5727 assert (status == 0, "invariant") ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5728 s = _counter;
a61af66fc99e Initial load
duke
parents:
diff changeset
5729 _counter = 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
5730 status = os::Solaris::mutex_unlock (_mutex) ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5731 assert (status == 0, "invariant") ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5732
a61af66fc99e Initial load
duke
parents:
diff changeset
5733 if (s < 1) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5734 status = os::Solaris::cond_signal (_cond) ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5735 assert (status == 0, "invariant") ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5736 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5737 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5738
a61af66fc99e Initial load
duke
parents:
diff changeset
5739 extern char** environ;
a61af66fc99e Initial load
duke
parents:
diff changeset
5740
a61af66fc99e Initial load
duke
parents:
diff changeset
5741 // Run the specified command in a separate process. Return its exit value,
a61af66fc99e Initial load
duke
parents:
diff changeset
5742 // or -1 on failure (e.g. can't fork a new process).
a61af66fc99e Initial load
duke
parents:
diff changeset
5743 // Unlike system(), this function can be called from signal handler. It
a61af66fc99e Initial load
duke
parents:
diff changeset
5744 // doesn't block SIGINT et al.
a61af66fc99e Initial load
duke
parents:
diff changeset
5745 int os::fork_and_exec(char* cmd) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5746 char * argv[4];
a61af66fc99e Initial load
duke
parents:
diff changeset
5747 argv[0] = (char *)"sh";
a61af66fc99e Initial load
duke
parents:
diff changeset
5748 argv[1] = (char *)"-c";
a61af66fc99e Initial load
duke
parents:
diff changeset
5749 argv[2] = cmd;
a61af66fc99e Initial load
duke
parents:
diff changeset
5750 argv[3] = NULL;
a61af66fc99e Initial load
duke
parents:
diff changeset
5751
a61af66fc99e Initial load
duke
parents:
diff changeset
5752 // fork is async-safe, fork1 is not so can't use in signal handler
a61af66fc99e Initial load
duke
parents:
diff changeset
5753 pid_t pid;
a61af66fc99e Initial load
duke
parents:
diff changeset
5754 Thread* t = ThreadLocalStorage::get_thread_slow();
a61af66fc99e Initial load
duke
parents:
diff changeset
5755 if (t != NULL && t->is_inside_signal_handler()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5756 pid = fork();
a61af66fc99e Initial load
duke
parents:
diff changeset
5757 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
5758 pid = fork1();
a61af66fc99e Initial load
duke
parents:
diff changeset
5759 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5760
a61af66fc99e Initial load
duke
parents:
diff changeset
5761 if (pid < 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5762 // fork failed
a61af66fc99e Initial load
duke
parents:
diff changeset
5763 warning("fork failed: %s", strerror(errno));
a61af66fc99e Initial load
duke
parents:
diff changeset
5764 return -1;
a61af66fc99e Initial load
duke
parents:
diff changeset
5765
a61af66fc99e Initial load
duke
parents:
diff changeset
5766 } else if (pid == 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5767 // child process
a61af66fc99e Initial load
duke
parents:
diff changeset
5768
a61af66fc99e Initial load
duke
parents:
diff changeset
5769 // try to be consistent with system(), which uses "/usr/bin/sh" on Solaris
a61af66fc99e Initial load
duke
parents:
diff changeset
5770 execve("/usr/bin/sh", argv, environ);
a61af66fc99e Initial load
duke
parents:
diff changeset
5771
a61af66fc99e Initial load
duke
parents:
diff changeset
5772 // execve failed
a61af66fc99e Initial load
duke
parents:
diff changeset
5773 _exit(-1);
a61af66fc99e Initial load
duke
parents:
diff changeset
5774
a61af66fc99e Initial load
duke
parents:
diff changeset
5775 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
5776 // copied from J2SE ..._waitForProcessExit() in UNIXProcess_md.c; we don't
a61af66fc99e Initial load
duke
parents:
diff changeset
5777 // care about the actual exit code, for now.
a61af66fc99e Initial load
duke
parents:
diff changeset
5778
a61af66fc99e Initial load
duke
parents:
diff changeset
5779 int status;
a61af66fc99e Initial load
duke
parents:
diff changeset
5780
a61af66fc99e Initial load
duke
parents:
diff changeset
5781 // Wait for the child process to exit. This returns immediately if
a61af66fc99e Initial load
duke
parents:
diff changeset
5782 // the child has already exited. */
a61af66fc99e Initial load
duke
parents:
diff changeset
5783 while (waitpid(pid, &status, 0) < 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5784 switch (errno) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5785 case ECHILD: return 0;
a61af66fc99e Initial load
duke
parents:
diff changeset
5786 case EINTR: break;
a61af66fc99e Initial load
duke
parents:
diff changeset
5787 default: return -1;
a61af66fc99e Initial load
duke
parents:
diff changeset
5788 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5789 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5790
a61af66fc99e Initial load
duke
parents:
diff changeset
5791 if (WIFEXITED(status)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5792 // The child exited normally; get its exit code.
a61af66fc99e Initial load
duke
parents:
diff changeset
5793 return WEXITSTATUS(status);
a61af66fc99e Initial load
duke
parents:
diff changeset
5794 } else if (WIFSIGNALED(status)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
5795 // The child exited because of a signal
a61af66fc99e Initial load
duke
parents:
diff changeset
5796 // The best value to return is 0x80 + signal number,
a61af66fc99e Initial load
duke
parents:
diff changeset
5797 // because that is what all Unix shells do, and because
a61af66fc99e Initial load
duke
parents:
diff changeset
5798 // it allows callers to distinguish between process exit and
a61af66fc99e Initial load
duke
parents:
diff changeset
5799 // process death by signal.
a61af66fc99e Initial load
duke
parents:
diff changeset
5800 return 0x80 + WTERMSIG(status);
a61af66fc99e Initial load
duke
parents:
diff changeset
5801 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
5802 // Unknown exit code; pass it through
a61af66fc99e Initial load
duke
parents:
diff changeset
5803 return status;
a61af66fc99e Initial load
duke
parents:
diff changeset
5804 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5805 }
a61af66fc99e Initial load
duke
parents:
diff changeset
5806 }