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annotate test/testlock.c @ 1502:d403a39389da
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| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 13 Mar 2006 01:16:16 +0000 |
| parents | be9c9c8f6d53 |
| children | 14717b52abc0 |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 /* Test the thread and mutex locking functions | |
| 3 Also exercises the system's signal/thread interaction | |
| 4 */ | |
| 5 | |
| 6 #include <signal.h> | |
| 7 #include <stdio.h> | |
| 8 #include <stdlib.h> | |
| 9 | |
| 10 #include "SDL.h" | |
| 11 #include "SDL_mutex.h" | |
| 12 #include "SDL_thread.h" | |
| 13 | |
| 14 static SDL_mutex *mutex = NULL; | |
| 15 static Uint32 mainthread; | |
| 16 static SDL_Thread *threads[6]; | |
| 17 | |
|
1151
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
18 /* |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
19 * SDL_Quit() shouldn't be used with atexit() directly because |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
20 * calling conventions may differ... |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
21 */ |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
22 static void SDL_Quit_Wrapper(void) |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
23 { |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
24 SDL_Quit(); |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
25 } |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
26 |
| 0 | 27 void printid(void) |
| 28 { | |
| 29 printf("Process %u: exiting\n", SDL_ThreadID()); | |
| 30 } | |
| 31 | |
| 32 void terminate(int sig) | |
| 33 { | |
| 34 printf("Process %u: raising SIGTERM\n", SDL_ThreadID()); | |
| 35 raise(SIGTERM); | |
| 36 } | |
| 37 void closemutex(int sig) | |
| 38 { | |
| 39 Uint32 id = SDL_ThreadID(); | |
| 40 int i; | |
| 41 printf("Process %u: Cleaning up...\n", id == mainthread ? 0 : id); | |
| 42 for ( i=0; i<6; ++i ) | |
| 43 SDL_KillThread(threads[i]); | |
| 44 SDL_DestroyMutex(mutex); | |
| 45 exit(sig); | |
| 46 } | |
| 47 int Run(void *data) | |
| 48 { | |
| 49 if ( SDL_ThreadID() == mainthread ) | |
| 50 signal(SIGTERM, closemutex); | |
| 51 while ( 1 ) { | |
| 52 printf("Process %u ready to work\n", SDL_ThreadID()); | |
| 53 if ( SDL_mutexP(mutex) < 0 ) { | |
| 54 fprintf(stderr, "Couldn't lock mutex: %s", SDL_GetError()); | |
| 55 exit(1); | |
| 56 } | |
| 57 printf("Process %u, working!\n", SDL_ThreadID()); | |
| 58 SDL_Delay(1*1000); | |
| 59 printf("Process %u, done!\n", SDL_ThreadID()); | |
| 60 if ( SDL_mutexV(mutex) < 0 ) { | |
| 61 fprintf(stderr, "Couldn't unlock mutex: %s", SDL_GetError()); | |
| 62 exit(1); | |
| 63 } | |
| 64 /* If this sleep isn't done, then threads may starve */ | |
| 65 SDL_Delay(10); | |
| 66 } | |
| 67 return(0); | |
| 68 } | |
| 69 | |
| 70 int main(int argc, char *argv[]) | |
| 71 { | |
| 72 int i; | |
| 73 int maxproc = 6; | |
| 74 | |
| 75 /* Load the SDL library */ | |
| 76 if ( SDL_Init(0) < 0 ) { | |
| 77 fprintf(stderr, "%s\n", SDL_GetError()); | |
| 78 exit(1); | |
| 79 } | |
|
1151
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
80 atexit(SDL_Quit_Wrapper); |
| 0 | 81 |
| 82 if ( (mutex=SDL_CreateMutex()) == NULL ) { | |
| 83 fprintf(stderr, "Couldn't create mutex: %s\n", SDL_GetError()); | |
| 84 exit(1); | |
| 85 } | |
| 86 | |
| 87 mainthread = SDL_ThreadID(); | |
| 88 printf("Main thread: %u\n", mainthread); | |
| 89 atexit(printid); | |
| 90 for ( i=0; i<maxproc; ++i ) { | |
| 91 if ( (threads[i]=SDL_CreateThread(Run, NULL)) == NULL ) | |
| 92 fprintf(stderr, "Couldn't create thread!\n"); | |
| 93 } | |
| 94 signal(SIGINT, terminate); | |
| 95 Run(NULL); | |
| 96 | |
| 97 return(0); /* Never reached */ | |
| 98 } |