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https://github.com/Ryujinx/SDL.git
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b72938c861
An existing hint lets apps that don't need the timer resolution changed avoid this, to save battery, etc, but this fixes several problems in timing, audio callbacks not firing fast enough, etc. Fixes Bugzilla #2944.
99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
/*
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Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely.
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*/
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/* Simple test of the SDL threading code */
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#include <stdio.h>
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#include <stdlib.h>
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#include <signal.h>
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#include "SDL.h"
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static SDL_TLSID tls;
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static int alive = 0;
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/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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static void
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quit(int rc)
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{
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SDL_Quit();
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exit(rc);
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}
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int SDLCALL
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ThreadFunc(void *data)
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{
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SDL_TLSSet(tls, "baby thread", NULL);
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SDL_Log("Started thread %s: My thread id is %lu, thread data = %s\n",
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(char *) data, SDL_ThreadID(), (const char *)SDL_TLSGet(tls));
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while (alive) {
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SDL_Log("Thread '%s' is alive!\n", (char *) data);
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SDL_Delay(1 * 1000);
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}
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SDL_Log("Thread '%s' exiting!\n", (char *) data);
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return (0);
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}
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static void
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killed(int sig)
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{
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SDL_Log("Killed with SIGTERM, waiting 5 seconds to exit\n");
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SDL_Delay(5 * 1000);
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alive = 0;
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quit(0);
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}
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int
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main(int argc, char *argv[])
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{
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SDL_Thread *thread;
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/* Enable standard application logging */
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SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
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/* Load the SDL library */
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if (SDL_Init(0) < 0) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
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return (1);
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}
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tls = SDL_TLSCreate();
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SDL_assert(tls);
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SDL_TLSSet(tls, "main thread", NULL);
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SDL_Log("Main thread data initially: %s\n", (const char *)SDL_TLSGet(tls));
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alive = 1;
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thread = SDL_CreateThread(ThreadFunc, "One", "#1");
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if (thread == NULL) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create thread: %s\n", SDL_GetError());
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quit(1);
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}
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SDL_Delay(5 * 1000);
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SDL_Log("Waiting for thread #1\n");
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alive = 0;
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SDL_WaitThread(thread, NULL);
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SDL_Log("Main thread data finally: %s\n", (const char *)SDL_TLSGet(tls));
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alive = 1;
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signal(SIGTERM, killed);
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thread = SDL_CreateThread(ThreadFunc, "Two", "#2");
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if (thread == NULL) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create thread: %s\n", SDL_GetError());
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quit(1);
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}
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raise(SIGTERM);
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SDL_Quit(); /* Never reached */
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return (0); /* Never reached */
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}
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