test/testhread.c

   1
   2 /* Simple test of the SDL threading 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 static int alive = 0;
  12
  13 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
  14 static void quit(int rc)
  15 {
  16         SDL_Quit();
  17         exit(rc);
  18 }
  19
  20 int SDLCALL ThreadFunc(void *data)
  21 {
  22         printf("Started thread %s: My thread id is %u\n",
  23                                 (char *)data, SDL_ThreadID());
  24         while ( alive ) {
  25                 printf("Thread '%s' is alive!\n", (char *)data);
  26                 SDL_Delay(1*1000);
  27         }
  28         printf("Thread '%s' exiting!\n", (char *)data);
  29         return(0);
  30 }
  31
  32 static void killed(int sig)
  33 {
  34         printf("Killed with SIGTERM, waiting 5 seconds to exit\n");
  35         SDL_Delay(5*1000);
  36         alive = 0;
  37         quit(0);
  38 }
  39
  40 int main(int argc, char *argv[])
  41 {
  42         SDL_Thread *thread;
  43
  44         /* Load the SDL library */
  45         if ( SDL_Init(0) < 0 ) {
  46                 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
  47                 return(1);
  48         }
  49
  50         alive = 1;
  51         thread = SDL_CreateThread(ThreadFunc, "#1");
  52         if ( thread == NULL ) {
  53                 fprintf(stderr, "Couldn't create thread: %s\n", SDL_GetError());
  54                 quit(1);
  55         }
  56         SDL_Delay(5*1000);
  57         printf("Waiting for thread #1\n");
  58         alive = 0;
  59         SDL_WaitThread(thread, NULL);
  60
  61         alive = 1;
  62         thread = SDL_CreateThread(ThreadFunc, "#2");
  63         if ( thread == NULL ) {
  64                 fprintf(stderr, "Couldn't create thread: %s\n", SDL_GetError());
  65                 quit(1);
  66         }
  67         SDL_Delay(5*1000);
  68         printf("Killing thread #2\n");
  69         SDL_KillThread(thread);
  70
  71         alive = 1;
  72         signal(SIGTERM, killed);
  73         thread = SDL_CreateThread(ThreadFunc, "#3");
  74         if ( thread == NULL ) {
  75                 fprintf(stderr, "Couldn't create thread: %s\n", SDL_GetError());
  76                 quit(1);
  77         }
  78         raise(SIGTERM);
  79
  80         SDL_Quit();     /* Never reached */
  81         return(0);      /* Never reached */
  82 }