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1 /*
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2 * Copyright 1998-2005 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 /*
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26 * HotSpot integration note:
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27 *
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28 * This is a consolidation of these two files:
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29 * src/share/hpi/export/hpi.h 1.15 99/06/18 JDK1.3 beta build I
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30 * src/share/hpi/export/dll.h 1.3 98/09/15 JDK1.3 beta build I
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31 * from the classic VM.
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32 *
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33 * bool_t is a type in the classic VM, and we define it here,
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34 * but in the future this should be a jboolean.
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35 *
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36 * The files are included verbatim expect for local includes removed from hpi.h.
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37 */
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38
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39 #ifndef _JAVASOFT_HPI_H_
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40 #define _JAVASOFT_HPI_H_
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41
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42 #ifdef __cplusplus
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43 extern "C" {
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44 #endif
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45
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46 /* A classic VMism that should become a jboolean. Fix in 1.2.1? */
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47 typedef enum { HPI_FALSE = 0, HPI_TRUE = 1 } bool_t;
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48
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49 /*
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50 * DLL.H: A common interface for helper DLLs loaded by the VM.
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51 * Each library exports the main entry point "DLL_Initialize". Through
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52 * that function the programmer can obtain a function pointer which has
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53 * type "GetInterfaceFunc." Through the function pointer the programmer
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54 * can obtain other interfaces supported in the DLL.
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55 */
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56 typedef jint (JNICALL * GetInterfaceFunc)
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57 (void **intfP, const char *name, jint ver);
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58
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59 jint JNICALL DLL_Initialize(GetInterfaceFunc *, void *args);
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60
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61
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62 /*
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63 * Host Porting Interface. This defines the "porting layer" for
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64 * POSIX.1 compliant operating systems.
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65 */
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66
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67 /*
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68 * memory allocations
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69 */
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70 typedef struct {
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71 /*
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72 * Malloc must return a unique pointer if size == 0.
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73 */
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74 void * (*Malloc)(size_t size);
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75 void * (*Realloc)(void *ptr, size_t new_size);
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76 /*
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77 * Free must allow ptr == NULL to be a no-op.
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78 */
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79 void (*Free)(void *ptr);
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80 /*
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81 * Calloc must return a unique pointer for if
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82 * n_item == 0 || item_size == 0.
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83 */
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84 void * (*Calloc)(size_t n_item, size_t item_size);
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85 char * (*Strdup)(const char *str);
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86
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87 void * (*MapMem)(size_t req_size, size_t *maped_size);
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88 void * (*UnmapMem)(void *req_addr, size_t req_size, size_t *unmap_size);
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89 /*
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90 * CommitMem should round the ptr down to the nearest page and
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91 * round the size up to the nearest page so that the committed
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92 * region is at least as large as the requested region.
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93 */
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94 void * (*CommitMem)(void *ptr, size_t size, size_t *actual);
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95 /*
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96 * sysDecommitMem should round the ptr up to the nearest page and
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97 * round the size down to the nearest page so that the decommitted
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98 * region is no greater than the requested region.
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99 */
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100 void * (*DecommitMem)(void *ptr, size_t size, size_t *actual);
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101
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102 #define HPI_PAGE_ALIGNMENT (64 * 1024)
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103
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104 void * (*AllocBlock)(size_t size, void **headP);
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105 void (*FreeBlock)(void *head);
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106 } HPI_MemoryInterface;
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107
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108 /*
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109 * dynamic linking libraries
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110 */
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111 typedef struct {
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112 void (*BuildLibName)(char *buf, int buf_len, char *path, const char *name);
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113 int (*BuildFunName)(char *name, int name_len, int arg_size, int en_idx);
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114
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115 void * (*LoadLibrary)(const char *name, char *err_buf, int err_buflen);
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116 void (*UnloadLibrary)(void *lib);
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117 void * (*FindLibraryEntry)(void *lib, const char *name);
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118 } HPI_LibraryInterface;
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119
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120 typedef void (*signal_handler_t)(int sig, void *siginfo, void *context);
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121
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122 #define HPI_SIG_DFL (signal_handler_t)0
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123 #define HPI_SIG_ERR (signal_handler_t)-1
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124 #define HPI_SIG_IGN (signal_handler_t)1
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125
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126 typedef struct {
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127 char *name; /* name such as green/native threads. */
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128 int isMP;
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129 } HPI_SysInfo;
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130
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131 typedef struct {
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132 HPI_SysInfo * (*GetSysInfo)(void);
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133 long (*GetMilliTicks)(void);
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134 jlong (*TimeMillis)(void);
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135
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136 signal_handler_t (*Signal)(int sig, signal_handler_t handler);
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137 void (*Raise)(int sig);
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138 void (*SignalNotify)(int sig);
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139 int (*SignalWait)(void);
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140
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141 int (*Shutdown)(void);
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142
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143 int (*SetLoggingLevel)(int level);
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144 bool_t (*SetMonitoringOn)(bool_t on);
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145 int (*GetLastErrorString)(char *buf, int len);
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146 } HPI_SystemInterface;
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147
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148 /*
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149 * threads and monitors
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150 */
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151 typedef struct sys_thread sys_thread_t;
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152 typedef struct sys_mon sys_mon_t;
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153
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154 #define HPI_OK 0
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155 #define HPI_ERR -1
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156 #define HPI_INTRPT -2 /* Operation was interrupted */
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157 #define HPI_TIMEOUT -3 /* A timer ran out */
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158 #define HPI_NOMEM -5 /* Ran out of memory */
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159 #define HPI_NORESOURCE -6 /* Ran out of some system resource */
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160
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161 /* There are three basic states: RUNNABLE, MONITOR_WAIT, and CONDVAR_WAIT.
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162 * When the thread is suspended in any of these states, the
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163 * HPI_THREAD_SUSPENDED bit will be set
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164 */
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165 enum {
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166 HPI_THREAD_RUNNABLE = 1,
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167 HPI_THREAD_MONITOR_WAIT,
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168 HPI_THREAD_CONDVAR_WAIT
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169 };
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170
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171 #define HPI_MINIMUM_PRIORITY 1
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172 #define HPI_MAXIMUM_PRIORITY 10
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173 #define HPI_NORMAL_PRIORITY 5
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174
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175 #define HPI_THREAD_SUSPENDED 0x8000
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176 #define HPI_THREAD_INTERRUPTED 0x4000
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177
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178 typedef struct {
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179 sys_thread_t *owner;
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180 int entry_count;
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181 sys_thread_t **monitor_waiters;
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182 sys_thread_t **condvar_waiters;
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183 int sz_monitor_waiters;
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184 int sz_condvar_waiters;
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185 int n_monitor_waiters;
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186 int n_condvar_waiters;
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187 } sys_mon_info;
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188
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189 typedef struct {
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190 int (*ThreadBootstrap)(sys_thread_t **tidP,
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191 sys_mon_t **qlockP,
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192 int nReservedBytes);
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193 int (*ThreadCreate)(sys_thread_t **tidP,
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194 long stk_size,
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195 void (*func)(void *),
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196 void *arg);
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197 sys_thread_t * (*ThreadSelf)(void);
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198 void (*ThreadYield)(void);
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199 int (*ThreadSuspend)(sys_thread_t *tid);
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200 int (*ThreadResume)(sys_thread_t *tid);
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201 int (*ThreadSetPriority)(sys_thread_t *tid, int prio);
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202 int (*ThreadGetPriority)(sys_thread_t *tid, int *prio);
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203 void * (*ThreadStackPointer)(sys_thread_t *tid);
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204 void * (*ThreadStackTop)(sys_thread_t *tid);
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205 long * (*ThreadRegs)(sys_thread_t *tid, int *regs);
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206 int (*ThreadSingle)(void);
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207 void (*ThreadMulti)(void);
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208 int (*ThreadEnumerateOver)(int (*func)(sys_thread_t *, void *),
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209 void *arg);
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210 int (*ThreadCheckStack)(void);
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211 void (*ThreadPostException)(sys_thread_t *tid, void *arg);
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212 void (*ThreadInterrupt)(sys_thread_t *tid);
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213 int (*ThreadIsInterrupted)(sys_thread_t *tid, int clear);
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214 int (*ThreadAlloc)(sys_thread_t **tidP);
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215 int (*ThreadFree)(void);
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216 jlong (*ThreadCPUTime)(void);
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217 int (*ThreadGetStatus)(sys_thread_t *tid, sys_mon_t **monitor);
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218 void * (*ThreadInterruptEvent)(void);
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219 void * (*ThreadNativeID)(sys_thread_t *tid);
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220
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221 /* These three functions are used by the CPU time profiler.
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222 * sysThreadIsRunning determines whether the thread is running (not just
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223 * runnable). It is only safe to call this function after calling
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224 * sysThreadProfSuspend.
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225 */
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226 bool_t (*ThreadIsRunning)(sys_thread_t *tid);
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227 void (*ThreadProfSuspend)(sys_thread_t *tid);
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228 void (*ThreadProfResume)(sys_thread_t *tid);
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229
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230 int (*AdjustTimeSlice)(int ms);
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231
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232 size_t (*MonitorSizeof)(void);
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233 int (*MonitorInit)(sys_mon_t *mid);
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234 int (*MonitorDestroy)(sys_mon_t *mid);
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235 int (*MonitorEnter)(sys_thread_t *self, sys_mon_t *mid);
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236 bool_t (*MonitorEntered)(sys_thread_t *self, sys_mon_t *mid);
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237 int (*MonitorExit)(sys_thread_t *self, sys_mon_t *mid);
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238 int (*MonitorNotify)(sys_thread_t *self, sys_mon_t *mid);
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239 int (*MonitorNotifyAll)(sys_thread_t *self, sys_mon_t *mid);
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240 int (*MonitorWait)(sys_thread_t *self, sys_mon_t *mid, jlong ms);
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241 bool_t (*MonitorInUse)(sys_mon_t *mid);
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242 sys_thread_t * (*MonitorOwner)(sys_mon_t *mid);
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243 int (*MonitorGetInfo)(sys_mon_t *mid, sys_mon_info *info);
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244
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245 } HPI_ThreadInterface;
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246
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247 /*
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248 * files
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249 */
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250
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251 #define HPI_FILETYPE_REGULAR (0)
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252 #define HPI_FILETYPE_DIRECTORY (1)
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253 #define HPI_FILETYPE_OTHER (2)
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254
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255 typedef struct {
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256 char * (*NativePath)(char *path);
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257 int (*FileType)(const char *path);
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258 int (*Open)(const char *name, int openMode, int filePerm);
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259 int (*Close)(int fd);
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260 jlong (*Seek)(int fd, jlong offset, int whence);
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261 int (*SetLength)(int fd, jlong length);
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262 int (*Sync)(int fd);
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263 int (*Available)(int fd, jlong *bytes);
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264 size_t (*Read)(int fd, void *buf, unsigned int nBytes);
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265 size_t (*Write)(int fd, const void *buf, unsigned int nBytes);
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266 int (*FileSizeFD)(int fd, jlong *size);
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267 } HPI_FileInterface;
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268
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269 /*
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270 * sockets
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271 */
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272 struct sockaddr;
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273 struct hostent;
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274
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275 typedef struct {
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276 int (*Close)(int fd);
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277 long (*Available)(int fd, jint *pbytes);
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278 int (*Connect)(int fd, struct sockaddr *him, int len);
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279 int (*Accept)(int fd, struct sockaddr *him, int *len);
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280 int (*SendTo)(int fd, char *buf, int len, int flags,
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281 struct sockaddr *to, int tolen);
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282 int (*RecvFrom)(int fd, char *buf, int nbytes, int flags,
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283 struct sockaddr *from, int *fromlen);
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284 int (*Listen)(int fd, long count);
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285 int (*Recv)(int fd, char *buf, int nBytes, int flags);
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286 int (*Send)(int fd, char *buf, int nBytes, int flags);
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287 int (*Timeout)(int fd, long timeout);
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288 struct hostent * (*GetHostByName)(char *hostname);
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289 int (*Socket)(int domain, int type, int protocol);
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290 int (*SocketShutdown)(int fd, int howto);
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291 int (*Bind)(int fd, struct sockaddr *him, int len);
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292 int (*GetSocketName)(int fd, struct sockaddr *him, int *len);
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293 int (*GetHostName)(char *hostname, int namelen);
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294 struct hostent * (*GetHostByAddr)(const char *hostname, int len, int type);
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295 int (*SocketGetOption)(int fd, int level, int optname, char *optval, int *optlen);
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296 int (*SocketSetOption)(int fd, int level, int optname, const char *optval, int optlen);
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297 struct protoent * (*GetProtoByName)(char* name);
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298 } HPI_SocketInterface;
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299
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300 /*
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301 * callbacks.
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302 */
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303 typedef struct vm_calls {
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304 int (*jio_fprintf)(FILE *fp, const char *fmt, ...);
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305 void (*panic)(const char *fmt, ...);
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306 void (*monitorRegister)(sys_mon_t *mid, char *info_str);
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307
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308 void (*monitorContendedEnter)(sys_thread_t *self, sys_mon_t *mid);
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309 void (*monitorContendedEntered)(sys_thread_t *self, sys_mon_t *mid);
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310 void (*monitorContendedExit)(sys_thread_t *self, sys_mon_t *mid);
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311 } vm_calls_t;
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312
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313 #ifdef __cplusplus
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314 }
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315 #endif
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316
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317 #endif /* !_JAVASOFT_HPI_H_ */
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