view test/testhread.c @ 2844:70b63882d2ef

The YCbCr texture extension works now that bytes_per_pixel() returns the correct value for YUV textures. Yay! I'm still cheering for Ryan's pixel shader instead, since once it works different shaders can handle all the YUV formats.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 06 Dec 2008 18:37:06 +0000
parents 4436464c4f51
children 0d1b16ee0bca
line wrap: on
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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;

/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
static void
quit(int rc)
{
    SDL_Quit();
    exit(rc);
}

int SDLCALL
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;
    quit(0);
}

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());
        return (1);
    }

    alive = 1;
    thread = SDL_CreateThread(ThreadFunc, "#1");
    if (thread == NULL) {
        fprintf(stderr, "Couldn't create thread: %s\n", SDL_GetError());
        quit(1);
    }
    SDL_Delay(5 * 1000);
    printf("Waiting for thread #1\n");
    alive = 0;
    SDL_WaitThread(thread, NULL);

    alive = 1;
    signal(SIGTERM, killed);
    thread = SDL_CreateThread(ThreadFunc, "#2");
    if (thread == NULL) {
        fprintf(stderr, "Couldn't create thread: %s\n", SDL_GetError());
        quit(1);
    }
    raise(SIGTERM);

    SDL_Quit();                 /* Never reached */
    return (0);                 /* Never reached */
}