annotate Isolated/SimpleThreadWindows.c @ 59:7d508c8cd75a

New implementation backend for SimpleThread using native Windows threading APIs. Documentation found here: http://msdn.microsoft.com/en-us/library/kdzttdcb(v=vs.110).aspx Web searches indicated I should be using _beginthreadex instead of CreateThread for C runtime compatibility.
author Eric Wing <ewing . public |-at-| gmail . com>
date Fri, 08 Jun 2012 01:04:51 -0700
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children f7acef5a80fe
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1 /* Copyright PlayControl Software LLC / Eric Wing.
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2 */
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3 #include "SimpleThread.h"
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4
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5 #define WIN32_LEAN_AND_MEAN
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6 #include <process.h>
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7 #include <windows.h>
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8
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9 #if defined(DEBUG)
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10 #include <stdio.h>
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11 #define THRDDBG(x) printf x
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12 #else
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13 #define THRDDBG(x)
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14 #endif
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15
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16
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17 struct SimpleThread
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18 {
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19 unsigned threadID;
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20 uintptr_t nativeThread;
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21 unsigned threadStatus;
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22 // void* userData;
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23 };
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24
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25 typedef struct SimpleThreadArguments
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26 {
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27 int (*userFunction)(void*);
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28 void* userData;
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29 SimpleThread* simpleThread;
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30 } SimpleThreadArguments;
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31
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32
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33
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34 static unsigned Internal_RunThread(void* user_data)
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35 {
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36 int (*user_function)(void*);
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37 void* function_user_data;
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38 int* status_val;
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39
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40 #if 0
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41 /* disable signals */
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42 sigset_t disable_set;
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43
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44 /*
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45 in the main thread, set up the desired signal mask, common to most threads
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46 any newly created threads will inherit this signal mask
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47 */
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48 sigemptyset(&disable_set);
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49 sigaddset(&disable_set, SIGHUP);
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50 sigaddset(&disable_set, SIGINT);
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51 sigaddset(&disable_set, SIGUSR1);
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52 sigaddset(&disable_set, SIGUSR2);
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53 sigaddset(&disable_set, SIGALRM);
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54 sigaddset(&disable_set, SIGQUIT);
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55 sigaddset(&disable_set, SIGPIPE);
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56 sigaddset(&disable_set, SIGTERM);
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57 sigaddset(&disable_set, SIGCHLD);
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58 sigaddset(&disable_set, SIGWINCH);
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59 sigaddset(&disable_set, SIGVTALRM);
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60 sigaddset(&disable_set, SIGPROF);
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61
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62
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63 /* block out these signals */
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64 sigprocmask(SIG_BLOCK, &disable_set, NULL);
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65 #endif
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66
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67 SimpleThreadArguments* simple_thread_arguments = (SimpleThreadArguments*)user_data;
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68 /* It looks like the last parameter of _beginthreadex sets the threadID for me */
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69 /* simple_thread_arguments->simpleThread->threadID = SimpleThread_GetCurrentThreadID(); */
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70
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71 user_function = simple_thread_arguments->userFunction;
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72 function_user_data = simple_thread_arguments->userData;
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73 status_val = &simple_thread_arguments->simpleThread->threadStatus;
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74
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75
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76 /* I hope this is safe to delete on a different thread than it was created for. */
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77 free(simple_thread_arguments);
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78
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79 *status_val = user_function(function_user_data);
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80
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81 _endthreadex( 0 );
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82
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83 return NULL;
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84 }
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85
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86
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87 SimpleThread* SimpleThread_CreateThread(int (*user_function)(void*), void* user_data)
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88 {
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89 int ret_val;
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90 SimpleThread* new_thread;
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91 SimpleThreadArguments* simple_thread_arguments;
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92
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93 new_thread = (SimpleThread*)malloc(sizeof(SimpleThread));
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94 if(NULL == new_thread)
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95 {
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96 THRDDBG(("Out of memory.\n"));
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97 return NULL;
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98 }
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99
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100 simple_thread_arguments = (SimpleThreadArguments*)malloc(sizeof(SimpleThreadArguments));
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101 if(NULL == simple_thread_arguments)
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102 {
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103 THRDDBG(("Out of memory.\n"));
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104 free(new_thread);
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105 return NULL;
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106 }
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107 simple_thread_arguments->userFunction = user_function;
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108 simple_thread_arguments->userData = user_data;
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109 simple_thread_arguments->simpleThread = new_thread;
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110
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111
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112 new_thread->nativeThread = _beginthreadex(NULL, 0, &Internal_RunThread, simple_thread_arguments, 0, &new_thread->threadID);
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113 if(0 == ret_val)
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114 {
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115 THRDDBG(("_beginthreadex failed with: %d\n", errno));
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116 free(simple_thread_arguments);
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117 free(new_thread);
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118 return NULL;
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119 }
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120
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121 return new_thread;
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122 }
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123
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124
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125
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126 size_t SimpleThread_GetCurrentThreadID()
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127 {
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128 return (size_t)GetCurrentThreadId();
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129 }
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130
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131 void SimpleThread_WaitThread(SimpleThread* simple_thread, int* thread_status)
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132 {
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133 int ret_val;
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134 if(NULL == simple_thread)
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135 {
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136 THRDDBG(("SimpleThread_WaitThread was passed NULL\n"));
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137 return;
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138 }
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139
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140 WaitForSingleObject(simple_thread->nativeThread, INFINITE);
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141 CloseHandle(simple_thread->nativeThread);
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142
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143 if(NULL != thread_status)
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144 {
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145 *thread_status = (int)simple_thread->threadStatus;
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146 }
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147 free(simple_thread);
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148 }
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149
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150 size_t SimpleThread_GetThreadID(SimpleThread* simple_thread)
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151 {
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152 if(NULL == simple_thread)
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153 {
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154 THRDDBG(("SimpleThread_GetThreadID was passed NULL\n"));
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155 return 0;
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156 }
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157 return (size_t)simple_thread->threadID;
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158 }
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159
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160 /* TODO: Figure out portable/normalized range for levels */
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161 int SimpleThread_GetThreadPriority(SimpleThread* simple_thread)
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162 {
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163 struct sched_param schedule_param;
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164 int sched_policy;
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165 int ret_val;
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166
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167 if(NULL == simple_thread)
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168 {
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169 THRDDBG(("SimpleThread_GetThreadPriority was passed NULL\n"));
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170 return THREAD_PRIORITY_ERROR_RETURN; /* Windows ranges seem to go from -15 to +15 */
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171 }
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172 ret_val = GetThreadPriority(simple_thread->nativeThread);
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173 if(THREAD_PRIORITY_ERROR_RETURN == ret_val)
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174 {
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175 THRDDBG(("SimpleThread_GetThreadPriority GetThreadPriority failed with: %d\n", ret_val));
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176 return THREAD_PRIORITY_ERROR_RETURN;
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177 }
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178 return ret_val;
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179 }
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180
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181 /* TODO: Figure out portable/normalized range for levels */
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182 void SimpleThread_SetThreadPriority(SimpleThread* simple_thread, int priority_level)
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183 {
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184 struct sched_param schedule_param;
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185 BOOL ret_val;
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186
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187 if(NULL == simple_thread)
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188 {
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189 THRDDBG(("SimpleThread_SetThreadPriority was passed NULL\n"));
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190 return;
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191 }
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192
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193 ret_val = SetThreadPriority(simple_thread->nativeThread, priority_level);
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194 if(0 == ret_val)
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195 {
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196 THRDDBG(("SimpleThread_SetThreadPriority SetThreadPriority failed"));
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197 return;
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198 }
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199 }
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200