annotate test/torturethread.c @ 4135:cd98d1dc385c SDL-1.2

Damien Carbery fixed bug #542 In SDL 1.2.13 sdl.m4 the AM_PATH_SDL function looks for sdl-config. It sets the PATH: PATH="$prefix/bin:$prefix/usr/bin:$PATH" but does not save the current PATH or restore the current PATH at the end. This breaks the build on Solaris because we have GNU tools in another dir (listed at the top of PATH) but non-GNU tools with the same names in $prefix/bin. Later configure tests finds the non-GNU tools and quits in error
author Sam Lantinga <slouken@libsdl.org>
date Thu, 24 Jan 2008 15:50:20 +0000
parents 290b5baf2fca
children 782fd950bd46 c121d94672cb
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1
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2 /* Simple test of the SDL threading code */
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3
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4 #include <stdio.h>
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5 #include <stdlib.h>
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6 #include <signal.h>
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7 #include <string.h>
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8
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9 #include "SDL.h"
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10 #include "SDL_thread.h"
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11
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12 #define NUMTHREADS 10
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13
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14 static char volatile time_for_threads_to_die[NUMTHREADS];
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15
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16 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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17 static void quit(int rc)
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18 {
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19 SDL_Quit();
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20 exit(rc);
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21 }
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22
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23 int SDLCALL SubThreadFunc(void *data) {
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24 while(! *(int volatile *)data) {
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25 ; /*SDL_Delay(10);*/ /* do nothing */
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26 }
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27 return 0;
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28 }
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29
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30 int SDLCALL ThreadFunc(void *data) {
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31 SDL_Thread *sub_threads[NUMTHREADS];
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32 int flags[NUMTHREADS];
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33 int i;
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34 int tid = (int)(uintptr_t)data;
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35
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36 fprintf(stderr, "Creating Thread %d\n", tid);
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37
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38 for(i = 0; i < NUMTHREADS; i++) {
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39 flags[i] = 0;
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40 sub_threads[i] = SDL_CreateThread(SubThreadFunc, &flags[i]);
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41 }
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42
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43 printf("Thread '%d' waiting for signal\n", tid);
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44 while(time_for_threads_to_die[tid] != 1) {
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45 ; /* do nothing */
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46 }
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47
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48 printf("Thread '%d' sending signals to subthreads\n", tid);
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49 for(i = 0; i < NUMTHREADS; i++) {
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50 flags[i] = 1;
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51 SDL_WaitThread(sub_threads[i], NULL);
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52 }
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53
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54 printf("Thread '%d' exiting!\n", tid);
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55
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56 return 0;
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57 }
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58
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59 int main(int argc, char *argv[])
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60 {
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61 SDL_Thread *threads[NUMTHREADS];
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62 int i;
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63
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64 /* Load the SDL library */
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65 if ( SDL_Init(0) < 0 ) {
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66 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
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67 return(1);
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68 }
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69
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70 signal(SIGSEGV, SIG_DFL);
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71 for(i = 0; i < NUMTHREADS; i++) {
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72 time_for_threads_to_die[i] = 0;
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73 threads[i] = SDL_CreateThread(ThreadFunc, (void *)(uintptr_t)i);
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74
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75 if ( threads[i] == NULL ) {
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76 fprintf(stderr,
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77 "Couldn't create thread: %s\n", SDL_GetError());
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78 quit(1);
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79 }
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80 }
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81
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82 for(i = 0; i < NUMTHREADS; i++) {
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83 time_for_threads_to_die[i] = 1;
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84 }
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85
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86 for(i = 0; i < NUMTHREADS; i++) {
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87 SDL_WaitThread(threads[i], NULL);
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88 }
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89 SDL_Quit();
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90 return(0);
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91 }