test/torturethread.c
author Alex Baines <alex@abaines.me.uk>
Tue, 19 Aug 2014 23:31:50 +0100
changeset 9097 56d712662a82
parent 8149 681eb46b8ac4
child 9356 e87d6e1e812a
permissions -rw-r--r--
Add a SDL_IM_INTERNAL_EDITING event to make IMs like iBus render editing text in its own UI instead of sending TEXTEDITING events.
This is useful for applications that handle TEXTINPUT events but not TEXTEDITING events.
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/*
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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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}