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annotate src/thread/win32/SDL_systhread.c @ 2201:6280c111ee80

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author Sam Lantinga <slouken@libsdl.org>
date Sun, 15 Jul 2007 21:53:51 +0000
parents c121d94672cb
children 4436464c4f51
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /* Win32 thread management routines for SDL */
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25
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26 #define WIN32_LEAN_AND_MEAN
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27 #include <windows.h>
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28
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29 #include "SDL_thread.h"
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30 #include "../SDL_thread_c.h"
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31 #include "../SDL_systhread.h"
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32
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33 #ifndef SDL_PASSED_BEGINTHREAD_ENDTHREAD
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34 #ifndef _WIN32_WCE
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35 /* We'll use the C library from this DLL */
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36 #include <process.h>
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37 #endif
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38
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39 #if __GNUC__
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40 typedef unsigned long (__cdecl * pfnSDL_CurrentBeginThread) (void *, unsigned,
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41 unsigned
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42 (__stdcall *
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43 func) (void *),
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44 void *arg,
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45 unsigned,
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46 unsigned
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47 *threadID);
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48 typedef void (__cdecl * pfnSDL_CurrentEndThread) (unsigned code);
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49 #elif defined(__WATCOMC__)
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50 /* This is for Watcom targets except OS2 */
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51 #if __WATCOMC__ < 1240
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52 #define __watcall
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53 #endif
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54 typedef unsigned long (__watcall * pfnSDL_CurrentBeginThread) (void *,
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55 unsigned,
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56 unsigned
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57 (__stdcall *
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58 func) (void
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59 *),
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60 void *arg,
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61 unsigned,
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62 unsigned
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63 *threadID);
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64 typedef void (__watcall * pfnSDL_CurrentEndThread) (unsigned code);
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65 #else
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66 typedef uintptr_t(__cdecl * pfnSDL_CurrentBeginThread) (void *, unsigned,
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67 unsigned (__stdcall *
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68 func) (void
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69 *),
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70 void *arg, unsigned,
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71 unsigned *threadID);
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72 typedef void (__cdecl * pfnSDL_CurrentEndThread) (unsigned code);
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73 #endif
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74 #endif /* !SDL_PASSED_BEGINTHREAD_ENDTHREAD */
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75
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76
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77 typedef struct ThreadStartParms
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78 {
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79 void *args;
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80 pfnSDL_CurrentEndThread pfnCurrentEndThread;
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81 } tThreadStartParms, *pThreadStartParms;
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82
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83 static unsigned __stdcall
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84 RunThread(void *data)
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85 {
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86 pThreadStartParms pThreadParms = (pThreadStartParms) data;
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87 pfnSDL_CurrentEndThread pfnCurrentEndThread = NULL;
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88
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89 // Call the thread function!
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90 SDL_RunThread(pThreadParms->args);
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91
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92 // Get the current endthread we have to use!
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93 if (pThreadParms) {
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94 pfnCurrentEndThread = pThreadParms->pfnCurrentEndThread;
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95 SDL_free(pThreadParms);
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96 }
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97 // Call endthread!
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98 if (pfnCurrentEndThread)
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99 (*pfnCurrentEndThread) (0);
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100 return (0);
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101 }
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102
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103 #ifdef SDL_PASSED_BEGINTHREAD_ENDTHREAD
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104 int
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105 SDL_SYS_CreateThread(SDL_Thread * thread, void *args,
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106 pfnSDL_CurrentBeginThread pfnBeginThread,
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107 pfnSDL_CurrentEndThread pfnEndThread)
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108 {
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109 #else
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110 int
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111 SDL_SYS_CreateThread(SDL_Thread * thread, void *args)
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112 {
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113 #ifdef _WIN32_WCE
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114 pfnSDL_CurrentBeginThread pfnBeginThread = NULL;
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115 pfnSDL_CurrentEndThread pfnEndThread = NULL;
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116 #else
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117 pfnSDL_CurrentBeginThread pfnBeginThread = _beginthreadex;
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118 pfnSDL_CurrentEndThread pfnEndThread = _endthreadex;
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119 #endif
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120 #endif /* SDL_PASSED_BEGINTHREAD_ENDTHREAD */
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121 unsigned threadid;
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122 pThreadStartParms pThreadParms =
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123 (pThreadStartParms) SDL_malloc(sizeof(tThreadStartParms));
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124 if (!pThreadParms) {
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125 SDL_OutOfMemory();
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126 return (-1);
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127 }
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128 // Save the function which we will have to call to clear the RTL of calling app!
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129 pThreadParms->pfnCurrentEndThread = pfnEndThread;
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130 // Also save the real parameters we have to pass to thread function
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131 pThreadParms->args = args;
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132
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133 if (pfnBeginThread) {
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134 thread->handle =
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135 (SYS_ThreadHandle) pfnBeginThread(NULL, 0, RunThread,
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136 pThreadParms, 0, &threadid);
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137 } else {
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138 thread->handle =
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139 CreateThread(NULL, 0, RunThread, pThreadParms, 0, &threadid);
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140 }
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141 if (thread->handle == NULL) {
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142 SDL_SetError("Not enough resources to create thread");
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143 return (-1);
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144 }
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145 return (0);
0
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146 }
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147
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148 void
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149 SDL_SYS_SetupThread(void)
0
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150 {
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151 return;
0
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152 }
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153
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154 Uint32
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155 SDL_ThreadID(void)
0
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156 {
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157 return ((Uint32) GetCurrentThreadId());
0
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158 }
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159
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160 void
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161 SDL_SYS_WaitThread(SDL_Thread * thread)
0
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162 {
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163 WaitForSingleObject(thread->handle, INFINITE);
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164 CloseHandle(thread->handle);
0
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165 }
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166
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167 /* WARNING: This function is really a last resort.
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168 * Threads should be signaled and then exit by themselves.
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169 * TerminateThread() doesn't perform stack and DLL cleanup.
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170 */
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171 void
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172 SDL_SYS_KillThread(SDL_Thread * thread)
0
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173 {
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174 TerminateThread(thread->handle, FALSE);
0
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175 }
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176
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177 /* vi: set ts=4 sw=4 expandtab: */