Mercurial > sdl-ios-xcode
annotate test/testsem.c @ 1490:8f3e602904d1
Dynamic OpenGL loading is the default now. :)
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 09 Mar 2006 15:11:15 +0000 |
| parents | 4d3bb026cd16 |
| children | 1dd8bf30a109 |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 /* Simple test of the SDL semaphore code */ | |
| 3 | |
| 4 #include <stdio.h> | |
| 5 #include <stdlib.h> | |
| 6 #include <signal.h> | |
| 7 | |
| 8 #include "SDL.h" | |
| 9 #include "SDL_thread.h" | |
| 10 | |
| 11 #define NUM_THREADS 10 | |
| 12 | |
| 13 static SDL_sem *sem; | |
| 14 int alive = 1; | |
| 15 | |
| 16 int ThreadFunc(void *data) | |
| 17 { | |
| 18 while ( alive ) { | |
| 19 SDL_SemWait(sem); | |
| 20 fprintf(stderr, "Thread number %d has got the semaphore (value = %d)!\n", (int)data, SDL_SemValue(sem)); | |
| 21 SDL_Delay(200); | |
| 22 SDL_SemPost(sem); | |
| 23 fprintf(stderr, "Thread number %d has released the semaphore (value = %d)!\n", (int)data, SDL_SemValue(sem)); | |
| 24 SDL_Delay(1); /* For the scheduler */ | |
| 25 } | |
| 26 printf("Thread number %d exiting.\n", (int)data); | |
| 27 return 0; | |
| 28 } | |
| 29 | |
| 30 static void killed(int sig) | |
| 31 { | |
| 32 alive = 0; | |
| 33 } | |
| 34 | |
| 35 int main(int argc, char **argv) | |
| 36 { | |
| 37 SDL_Thread *threads[NUM_THREADS]; | |
| 38 int i, init_sem; | |
| 39 | |
| 40 if(argc < 2) { | |
| 41 fprintf(stderr,"Usage: %s init_value\n", argv[0]); | |
|
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
|
42 return(1); |
| 0 | 43 } |
| 44 | |
| 45 /* Load the SDL library */ | |
| 46 if ( SDL_Init(0) < 0 ) { | |
| 47 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); | |
|
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
|
48 return(1); |
| 0 | 49 } |
| 50 signal(SIGTERM, killed); | |
| 51 signal(SIGINT, killed); | |
| 52 | |
| 53 init_sem = atoi(argv[1]); | |
| 54 sem = SDL_CreateSemaphore(init_sem); | |
| 55 | |
| 56 printf("Running %d threads, semaphore value = %d\n", NUM_THREADS, init_sem); | |
| 57 /* Create all the threads */ | |
| 58 for( i = 0; i < NUM_THREADS; ++i ) { | |
| 59 threads[i] = SDL_CreateThread(ThreadFunc, (void*)i); | |
| 60 } | |
| 61 | |
| 62 /* Wait 10 seconds */ | |
| 63 SDL_Delay(10 * 1000); | |
| 64 | |
| 65 /* Wait for all threads to finish */ | |
| 66 printf("Waiting for threads to finish\n"); | |
| 67 alive = 0; | |
| 68 for( i = 0; i < NUM_THREADS; ++i ) { | |
| 69 SDL_WaitThread(threads[i], NULL); | |
| 70 } | |
| 71 printf("Finished waiting for threads\n"); | |
| 72 | |
| 73 SDL_DestroySemaphore(sem); | |
|
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
|
74 SDL_Quit(); |
| 0 | 75 return(0); |
| 76 } |