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annotate src/os/aix/vm/os_aix.inline.hpp @ 21947:9f70fc90169d

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Truffle: remove expensive assertion
author Andreas Woess <andreas.woess@oracle.com>
date Wed, 17 Jun 2015 04:09:30 +0200
parents ce8f6bb717c9
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * Copyright 2012, 2013 SAP AG. All rights reserved.
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 *
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6 * This code is free software; you can redistribute it and/or modify it
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7 * under the terms of the GNU General Public License version 2 only, as
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8 * published by the Free Software Foundation.
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9 *
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10 * This code is distributed in the hope that it will be useful, but WITHOUT
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 * version 2 for more details (a copy is included in the LICENSE file that
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14 * accompanied this code).
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15 *
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16 * You should have received a copy of the GNU General Public License version
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17 * 2 along with this work; if not, write to the Free Software Foundation,
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19 *
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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21 * or visit www.oracle.com if you need additional information or have any
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22 * questions.
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23 *
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24 */
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25
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26 #ifndef OS_AIX_VM_OS_AIX_INLINE_HPP
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27 #define OS_AIX_VM_OS_AIX_INLINE_HPP
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28
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ce8f6bb717c9 8042195: Introduce umbrella header orderAccess.inline.hpp.
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29 #include "runtime/atomic.inline.hpp"
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30 #include "runtime/orderAccess.inline.hpp"
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31 #include "runtime/os.hpp"
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32
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33 // System includes
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34
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35 #include <unistd.h>
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36 #include <sys/socket.h>
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37 #include <sys/poll.h>
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38 #include <sys/ioctl.h>
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39 #include <netdb.h>
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40
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41 // Defined in the system headers included above.
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42 #undef rem_size
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43
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44 inline void* os::thread_local_storage_at(int index) {
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45 return pthread_getspecific((pthread_key_t)index);
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46 }
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47
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48 inline const char* os::file_separator() {
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49 return "/";
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50 }
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51
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52 inline const char* os::line_separator() {
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53 return "\n";
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54 }
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55
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56 inline const char* os::path_separator() {
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57 return ":";
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58 }
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59
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60 // File names are case-sensitive on windows only
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61 inline int os::file_name_strcmp(const char* s1, const char* s2) {
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62 return strcmp(s1, s2);
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63 }
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64
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65 inline bool os::obsolete_option(const JavaVMOption *option) {
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66 return false;
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67 }
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68
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69 inline bool os::uses_stack_guard_pages() {
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70 return true;
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71 }
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72
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73 inline bool os::allocate_stack_guard_pages() {
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74 assert(uses_stack_guard_pages(), "sanity check");
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75 return true;
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76 }
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77
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78
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79 // On Aix, reservations are made on a page by page basis, nothing to do.
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80 inline void os::pd_split_reserved_memory(char *base, size_t size,
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81 size_t split, bool realloc) {
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82 }
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83
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84
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85 // Bang the shadow pages if they need to be touched to be mapped.
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86 inline void os::bang_stack_shadow_pages() {
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87 }
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88
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89 inline void os::dll_unload(void *lib) {
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90 ::dlclose(lib);
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91 }
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92
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93 inline const int os::default_file_open_flags() { return 0;}
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94
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95 inline DIR* os::opendir(const char* dirname)
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96 {
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97 assert(dirname != NULL, "just checking");
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98 return ::opendir(dirname);
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99 }
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100
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101 inline int os::readdir_buf_size(const char *path)
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102 {
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103 // according to aix sys/limits, NAME_MAX must be retrieved at runtime. */
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104 const long my_NAME_MAX = pathconf(path, _PC_NAME_MAX);
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105 return my_NAME_MAX + sizeof(dirent) + 1;
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106 }
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107
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108 inline jlong os::lseek(int fd, jlong offset, int whence) {
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109 return (jlong) ::lseek64(fd, offset, whence);
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110 }
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111
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112 inline int os::fsync(int fd) {
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113 return ::fsync(fd);
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114 }
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115
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116 inline char* os::native_path(char *path) {
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117 return path;
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118 }
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119
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120 inline int os::ftruncate(int fd, jlong length) {
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121 return ::ftruncate64(fd, length);
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122 }
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123
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124 inline struct dirent* os::readdir(DIR* dirp, dirent *dbuf)
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125 {
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126 dirent* p;
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127 int status;
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128 assert(dirp != NULL, "just checking");
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129
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130 // NOTE: Linux readdir_r (on RH 6.2 and 7.2 at least) is NOT like the POSIX
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131 // version. Here is the doc for this function:
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132 // http://www.gnu.org/manual/glibc-2.2.3/html_node/libc_262.html
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133
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134 if((status = ::readdir_r(dirp, dbuf, &p)) != 0) {
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135 errno = status;
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136 return NULL;
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137 } else
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138 return p;
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139 }
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140
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141 inline int os::closedir(DIR *dirp) {
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142 assert(dirp != NULL, "argument is NULL");
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143 return ::closedir(dirp);
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144 }
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145
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146 // macros for restartable system calls
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147
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148 #define RESTARTABLE(_cmd, _result) do { \
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149 _result = _cmd; \
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150 } while(((int)_result == OS_ERR) && (errno == EINTR))
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151
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152 #define RESTARTABLE_RETURN_INT(_cmd) do { \
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153 int _result; \
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154 RESTARTABLE(_cmd, _result); \
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155 return _result; \
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156 } while(false)
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157
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158 // We don't have NUMA support on Aix, but we need this for compilation.
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159 inline bool os::numa_has_static_binding() { ShouldNotReachHere(); return true; }
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160 inline bool os::numa_has_group_homing() { ShouldNotReachHere(); return false; }
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161
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162 inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) {
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163 size_t res;
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164 RESTARTABLE( (size_t) ::read(fd, buf, (size_t) nBytes), res);
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165 return res;
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166 }
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167
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168 inline size_t os::write(int fd, const void *buf, unsigned int nBytes) {
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169 size_t res;
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170 RESTARTABLE((size_t) ::write(fd, buf, (size_t) nBytes), res);
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171 return res;
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172 }
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173
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174 inline int os::close(int fd) {
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175 return ::close(fd);
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176 }
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177
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178 inline int os::socket_close(int fd) {
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179 return ::close(fd);
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180 }
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181
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182 inline int os::socket(int domain, int type, int protocol) {
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183 return ::socket(domain, type, protocol);
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184 }
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185
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186 inline int os::recv(int fd, char* buf, size_t nBytes, uint flags) {
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187 RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, flags));
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188 }
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189
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190 inline int os::send(int fd, char* buf, size_t nBytes, uint flags) {
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191 RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags));
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192 }
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193
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194 inline int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) {
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195 return os::send(fd, buf, nBytes, flags);
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196 }
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197
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198 inline int os::timeout(int fd, long timeout) {
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199 julong prevtime,newtime;
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200 struct timeval t;
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201
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202 gettimeofday(&t, NULL);
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203 prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000;
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204
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205 for(;;) {
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206 struct pollfd pfd;
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207
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208 pfd.fd = fd;
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209 pfd.events = POLLIN | POLLERR;
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210
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211 int res = ::poll(&pfd, 1, timeout);
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212
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213 if (res == OS_ERR && errno == EINTR) {
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214
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215 // On Linux any value < 0 means "forever"
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216
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217 if(timeout >= 0) {
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218 gettimeofday(&t, NULL);
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219 newtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000;
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220 timeout -= newtime - prevtime;
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221 if(timeout <= 0)
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222 return OS_OK;
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223 prevtime = newtime;
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224 }
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225 } else
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226 return res;
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227 }
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228 }
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229
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230 inline int os::listen(int fd, int count) {
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231 return ::listen(fd, count);
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232 }
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233
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234 inline int os::connect(int fd, struct sockaddr* him, socklen_t len) {
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235 RESTARTABLE_RETURN_INT(::connect(fd, him, len));
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236 }
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237
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238 inline int os::accept(int fd, struct sockaddr* him, socklen_t* len) {
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239 // Linux doc says this can't return EINTR, unlike accept() on Solaris.
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240 // But see attachListener_linux.cpp, LinuxAttachListener::dequeue().
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241 return (int)::accept(fd, him, len);
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242 }
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243
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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244 inline int os::recvfrom(int fd, char* buf, size_t nBytes, uint flags,
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245 sockaddr* from, socklen_t* fromlen) {
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246 RESTARTABLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, flags, from, fromlen));
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247 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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248
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249 inline int os::sendto(int fd, char* buf, size_t len, uint flags,
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250 struct sockaddr* to, socklen_t tolen) {
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251 RESTARTABLE_RETURN_INT((int)::sendto(fd, buf, len, flags, to, tolen));
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252 }
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253
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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254 inline int os::socket_shutdown(int fd, int howto) {
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255 return ::shutdown(fd, howto);
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256 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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257
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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258 inline int os::bind(int fd, struct sockaddr* him, socklen_t len) {
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259 return ::bind(fd, him, len);
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260 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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261
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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262 inline int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len) {
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263 return ::getsockname(fd, him, len);
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264 }
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265
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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266 inline int os::get_host_name(char* name, int namelen) {
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267 return ::gethostname(name, namelen);
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268 }
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269
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270 inline struct hostent* os::get_host_by_name(char* name) {
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271 return ::gethostbyname(name);
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272 }
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273
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274 inline int os::get_sock_opt(int fd, int level, int optname,
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275 char* optval, socklen_t* optlen) {
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276 return ::getsockopt(fd, level, optname, optval, optlen);
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277 }
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278
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279 inline int os::set_sock_opt(int fd, int level, int optname,
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280 const char* optval, socklen_t optlen) {
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281 return ::setsockopt(fd, level, optname, optval, optlen);
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282 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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283 #endif // OS_AIX_VM_OS_AIX_INLINE_HPP