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https://github.com/Ryujinx/SDL.git
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24c86b5501
since the window system doesn't do it for us like other platforms. This prevents sticky keys and missed keys when going in and out of focus, for example Alt would appear to stick if switching away from an SDL app with Alt-Tab and had to be pressed again. CR: Sam
115 lines
2.8 KiB
C
115 lines
2.8 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 <string.h>
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#include "SDL.h"
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#include "SDL_thread.h"
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#define NUMTHREADS 10
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static char volatile time_for_threads_to_die[NUMTHREADS];
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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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SubThreadFunc(void *data)
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{
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while (!*(int volatile *) data) {
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; /* SDL_Delay(10); *//* do nothing */
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}
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return 0;
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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_Thread *sub_threads[NUMTHREADS];
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int flags[NUMTHREADS];
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int i;
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int tid = (int) (uintptr_t) data;
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SDL_Log("Creating Thread %d\n", tid);
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for (i = 0; i < NUMTHREADS; i++) {
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char name[64];
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SDL_snprintf(name, sizeof (name), "Child%d_%d", tid, i);
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flags[i] = 0;
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sub_threads[i] = SDL_CreateThread(SubThreadFunc, name, &flags[i]);
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}
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SDL_Log("Thread '%d' waiting for signal\n", tid);
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while (time_for_threads_to_die[tid] != 1) {
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; /* do nothing */
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}
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SDL_Log("Thread '%d' sending signals to subthreads\n", tid);
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for (i = 0; i < NUMTHREADS; i++) {
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flags[i] = 1;
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SDL_WaitThread(sub_threads[i], NULL);
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}
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SDL_Log("Thread '%d' exiting!\n", tid);
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return 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 *threads[NUMTHREADS];
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int i;
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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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signal(SIGSEGV, SIG_DFL);
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for (i = 0; i < NUMTHREADS; i++) {
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char name[64];
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SDL_snprintf(name, sizeof (name), "Parent%d", i);
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time_for_threads_to_die[i] = 0;
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threads[i] = SDL_CreateThread(ThreadFunc, name, (void*) (uintptr_t) i);
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if (threads[i] == 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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}
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for (i = 0; i < NUMTHREADS; i++) {
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time_for_threads_to_die[i] = 1;
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}
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for (i = 0; i < NUMTHREADS; i++) {
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SDL_WaitThread(threads[i], NULL);
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}
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SDL_Quit();
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return (0);
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}
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