mirror of
https://github.com/Ryujinx/SDL.git
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0e45984fa0
The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
114 lines
2.7 KiB
C
114 lines
2.7 KiB
C
/*
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Copyright (C) 1997-2015 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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#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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