Mercurial > sdl-ios-xcode
view test/testhread.c @ 3696:47d923feedb0
Fixed bug #935
Patrice Mandin
Hello,
I originally added pth support for threads in SDL 1.2 because on the Atari
platform we did not have any thread library.
I think pth support could be removed from SDL 1.3 for two reasons:
- Atari platform removed
- pth does not provides real (preemptive) threads, because it is user space,
and expect the application to call one of its function to give CPU to another
thread. So it is not exactly useful for applications, that expect threads to
run simultaneously.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 24 Jan 2010 20:47:20 +0000 |
parents | 0d1b16ee0bca |
children |
line wrap: on
line source
/* 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 %lu\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 */ }