author | Philipp Wiesemann <philipp.wiesemann@arcor.de> |
Wed, 18 Feb 2015 21:31:21 +0100 | |
changeset 9356 | e87d6e1e812a |
parent 8149 | 681eb46b8ac4 |
child 9619 | b94b6d0bff0f |
permissions | -rw-r--r-- |
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SDL 1.3 is now under the zlib license.
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/* |
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Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org> |
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|
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SDL 1.3 is now under the zlib license.
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This software is provided 'as-is', without any express or implied |
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warranty. In no event will the authors be held liable for any damages |
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arising from the use of this software. |
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|
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SDL 1.3 is now under the zlib license.
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Permission is granted to anyone to use this software for any purpose, |
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including commercial applications, and to alter it and redistribute it |
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freely. |
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*/ |
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/* Test the thread and mutex locking functions |
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Also exercises the system's signal/thread interaction |
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*/ |
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#include <signal.h> |
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#include <stdio.h> |
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#include <stdlib.h> /* for atexit() */ |
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#include "SDL.h" |
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static SDL_mutex *mutex = NULL; |
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static SDL_threadID mainthread; |
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static SDL_Thread *threads[6]; |
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static volatile int doterminate = 0; |
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/* |
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* SDL_Quit() shouldn't be used with atexit() directly because |
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* calling conventions may differ... |
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*/ |
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static void |
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SDL_Quit_Wrapper(void) |
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{ |
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SDL_Quit(); |
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} |
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void |
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printid(void) |
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{ |
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SDL_Log("Process %lu: exiting\n", SDL_ThreadID()); |
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} |
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void |
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terminate(int sig) |
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{ |
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signal(SIGINT, terminate); |
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doterminate = 1; |
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} |
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|
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void |
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closemutex(int sig) |
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{ |
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SDL_threadID id = SDL_ThreadID(); |
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int i; |
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SDL_Log("Process %lu: Cleaning up...\n", id == mainthread ? 0 : id); |
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doterminate = 1; |
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for (i = 0; i < 6; ++i) |
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SDL_WaitThread(threads[i], NULL); |
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SDL_DestroyMutex(mutex); |
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exit(sig); |
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} |
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|
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int SDLCALL |
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Run(void *data) |
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{ |
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if (SDL_ThreadID() == mainthread) |
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signal(SIGTERM, closemutex); |
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while (!doterminate) { |
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SDL_Log("Process %lu ready to work\n", SDL_ThreadID()); |
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if (SDL_LockMutex(mutex) < 0) { |
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't lock mutex: %s", SDL_GetError()); |
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exit(1); |
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} |
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SDL_Log("Process %lu, working!\n", SDL_ThreadID()); |
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SDL_Delay(1 * 1000); |
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SDL_Log("Process %lu, done!\n", SDL_ThreadID()); |
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if (SDL_UnlockMutex(mutex) < 0) { |
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't unlock mutex: %s", SDL_GetError()); |
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exit(1); |
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} |
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/* If this sleep isn't done, then threads may starve */ |
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SDL_Delay(10); |
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} |
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if (SDL_ThreadID() == mainthread && doterminate) { |
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SDL_Log("Process %lu: raising SIGTERM\n", SDL_ThreadID()); |
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raise(SIGTERM); |
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} |
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return (0); |
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} |
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||
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int |
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main(int argc, char *argv[]) |
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{ |
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int i; |
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int maxproc = 6; |
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/* Enable standard application logging */ |
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SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO); |
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|
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/* Load the SDL library */ |
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if (SDL_Init(0) < 0) { |
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "%s\n", SDL_GetError()); |
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exit(1); |
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105 |
} |
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atexit(SDL_Quit_Wrapper); |
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|
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if ((mutex = SDL_CreateMutex()) == NULL) { |
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create mutex: %s\n", SDL_GetError()); |
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exit(1); |
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} |
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|
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mainthread = SDL_ThreadID(); |
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114 |
SDL_Log("Main thread: %lu\n", mainthread); |
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115 |
atexit(printid); |
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116 |
for (i = 0; i < maxproc; ++i) { |
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117 |
char name[64]; |
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118 |
SDL_snprintf(name, sizeof (name), "Worker%d", i); |
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119 |
if ((threads[i] = SDL_CreateThread(Run, name, NULL)) == NULL) |
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120 |
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create thread!\n"); |
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121 |
} |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1769
diff
changeset
|
122 |
signal(SIGINT, terminate); |
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1769
diff
changeset
|
123 |
Run(NULL); |
0 | 124 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1769
diff
changeset
|
125 |
return (0); /* Never reached */ |
0 | 126 |
} |