testhread.c
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/* Simple test of the SDL threading code */
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include "SDL.h"
#include "SDL_thread.h"
static int alive = 0;
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/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
static void quit(int rc)
{
SDL_Quit();
exit(rc);
}
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int ThreadFunc(void *data)
{
printf("Started thread %s: My thread id is %u\n",
(char *)data, SDL_ThreadID());
while ( alive ) {
printf("Thread '%s' is alive!\n", (char *)data);
SDL_Delay(1*1000);
}
printf("Thread '%s' exiting!\n", (char *)data);
return(0);
}
static void killed(int sig)
{
printf("Killed with SIGTERM, waiting 5 seconds to exit\n");
SDL_Delay(5*1000);
alive = 0;
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}
int main(int argc, char *argv[])
{
SDL_Thread *thread;
/* Load the SDL library */
if ( SDL_Init(0) < 0 ) {
fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
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}
alive = 1;
thread = SDL_CreateThread(ThreadFunc, "#1");
if ( thread == NULL ) {
fprintf(stderr, "Couldn't create thread: %s\n", SDL_GetError());
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}
SDL_Delay(5*1000);
printf("Waiting for thread #1\n");
alive = 0;
SDL_WaitThread(thread, NULL);
alive = 1;
thread = SDL_CreateThread(ThreadFunc, "#2");
if ( thread == NULL ) {
fprintf(stderr, "Couldn't create thread: %s\n", SDL_GetError());
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}
SDL_Delay(5*1000);
printf("Killing thread #2\n");
SDL_KillThread(thread);
alive = 1;
signal(SIGTERM, killed);
thread = SDL_CreateThread(ThreadFunc, "#3");
if ( thread == NULL ) {
fprintf(stderr, "Couldn't create thread: %s\n", SDL_GetError());
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}
raise(SIGTERM);
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SDL_Quit(); /* Never reached */
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return(0); /* Never reached */
}