Mercurial > sdl-ios-xcode
annotate test/testsem.c @ 1861:b42823412c3b
Fixed bug #232
------- Comment #2 From Matthias Geissert 2006-05-24 07:54 [reply] -------
See http://dri.sourceforge.net/doc/DRIuserguide.html, section 11.5. There is
written that you need to use RTLD_GLOBAL, since, otherwise, nested open of
dynamic libraries doesn't work. However, This is necassary in this case, since
libGL opens the hardware-specific driver/library. I hope this helps you.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 20 Jun 2006 03:52:41 +0000 |
| parents | 290b5baf2fca |
| children | 782fd950bd46 c121d94672cb 99acf3d856cb |
| 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 | |
| 1769 | 16 int SDLCALL ThreadFunc(void *data) |
| 0 | 17 { |
|
1615
d5298e8f22b3
Ugh, more 64-bit cleanup
Sam Lantinga <slouken@libsdl.org>
parents:
1495
diff
changeset
|
18 int threadnum = (int)(uintptr_t)data; |
| 0 | 19 while ( alive ) { |
| 20 SDL_SemWait(sem); | |
|
1495
1dd8bf30a109
Might have fixed 64-bit issues. :)
Sam Lantinga <slouken@libsdl.org>
parents:
1439
diff
changeset
|
21 fprintf(stderr, "Thread number %d has got the semaphore (value = %d)!\n", threadnum, SDL_SemValue(sem)); |
| 0 | 22 SDL_Delay(200); |
| 23 SDL_SemPost(sem); | |
|
1495
1dd8bf30a109
Might have fixed 64-bit issues. :)
Sam Lantinga <slouken@libsdl.org>
parents:
1439
diff
changeset
|
24 fprintf(stderr, "Thread number %d has released the semaphore (value = %d)!\n", threadnum, SDL_SemValue(sem)); |
| 0 | 25 SDL_Delay(1); /* For the scheduler */ |
| 26 } | |
|
1495
1dd8bf30a109
Might have fixed 64-bit issues. :)
Sam Lantinga <slouken@libsdl.org>
parents:
1439
diff
changeset
|
27 printf("Thread number %d exiting.\n", threadnum); |
| 0 | 28 return 0; |
| 29 } | |
| 30 | |
| 31 static void killed(int sig) | |
| 32 { | |
| 33 alive = 0; | |
| 34 } | |
| 35 | |
| 36 int main(int argc, char **argv) | |
| 37 { | |
| 38 SDL_Thread *threads[NUM_THREADS]; | |
|
1495
1dd8bf30a109
Might have fixed 64-bit issues. :)
Sam Lantinga <slouken@libsdl.org>
parents:
1439
diff
changeset
|
39 uintptr_t i; |
|
1dd8bf30a109
Might have fixed 64-bit issues. :)
Sam Lantinga <slouken@libsdl.org>
parents:
1439
diff
changeset
|
40 int init_sem; |
| 0 | 41 |
| 42 if(argc < 2) { | |
| 43 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
|
44 return(1); |
| 0 | 45 } |
| 46 | |
| 47 /* Load the SDL library */ | |
| 48 if ( SDL_Init(0) < 0 ) { | |
| 49 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
|
50 return(1); |
| 0 | 51 } |
| 52 signal(SIGTERM, killed); | |
| 53 signal(SIGINT, killed); | |
| 54 | |
| 55 init_sem = atoi(argv[1]); | |
| 56 sem = SDL_CreateSemaphore(init_sem); | |
| 57 | |
| 58 printf("Running %d threads, semaphore value = %d\n", NUM_THREADS, init_sem); | |
| 59 /* Create all the threads */ | |
| 60 for( i = 0; i < NUM_THREADS; ++i ) { | |
| 61 threads[i] = SDL_CreateThread(ThreadFunc, (void*)i); | |
| 62 } | |
| 63 | |
| 64 /* Wait 10 seconds */ | |
| 65 SDL_Delay(10 * 1000); | |
| 66 | |
| 67 /* Wait for all threads to finish */ | |
| 68 printf("Waiting for threads to finish\n"); | |
| 69 alive = 0; | |
| 70 for( i = 0; i < NUM_THREADS; ++i ) { | |
| 71 SDL_WaitThread(threads[i], NULL); | |
| 72 } | |
| 73 printf("Finished waiting for threads\n"); | |
| 74 | |
| 75 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
|
76 SDL_Quit(); |
| 0 | 77 return(0); |
| 78 } |