cscg22-gearboy

CSCG 2022 Challenge 'Gearboy'
git clone https://git.sinitax.com/sinitax/cscg22-gearboy
Log | Files | Refs | sfeed.txt

testthread.c (2628B)

      1/*
      2  Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
      3
      4  This software is provided 'as-is', without any express or implied
      5  warranty.  In no event will the authors be held liable for any damages
      6  arising from the use of this software.
      7
      8  Permission is granted to anyone to use this software for any purpose,
      9  including commercial applications, and to alter it and redistribute it
     10  freely.
     11*/
     12
     13/* Simple test of the SDL threading code */
     14
     15#include <stdio.h>
     16#include <stdlib.h>
     17#include <signal.h>
     18
     19#include "SDL.h"
     20#include "SDL_thread.h"
     21
     22static SDL_TLSID tls;
     23static int alive = 0;
     24
     25/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
     26static void
     27quit(int rc)
     28{
     29    SDL_Quit();
     30    exit(rc);
     31}
     32
     33int SDLCALL
     34ThreadFunc(void *data)
     35{
     36    SDL_TLSSet(tls, "baby thread", NULL);
     37    SDL_Log("Started thread %s: My thread id is %lu, thread data = %s\n",
     38           (char *) data, SDL_ThreadID(), (const char *)SDL_TLSGet(tls));
     39    while (alive) {
     40        SDL_Log("Thread '%s' is alive!\n", (char *) data);
     41        SDL_Delay(1 * 1000);
     42    }
     43    SDL_Log("Thread '%s' exiting!\n", (char *) data);
     44    return (0);
     45}
     46
     47static void
     48killed(int sig)
     49{
     50    SDL_Log("Killed with SIGTERM, waiting 5 seconds to exit\n");
     51    SDL_Delay(5 * 1000);
     52    alive = 0;
     53    quit(0);
     54}
     55
     56int
     57main(int argc, char *argv[])
     58{
     59    SDL_Thread *thread;
     60
     61	/* Enable standard application logging */
     62    SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
     63
     64    /* Load the SDL library */
     65    if (SDL_Init(0) < 0) {
     66        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
     67        return (1);
     68    }
     69
     70    tls = SDL_TLSCreate();
     71    SDL_assert(tls);
     72    SDL_TLSSet(tls, "main thread", NULL);
     73    SDL_Log("Main thread data initially: %s\n", (const char *)SDL_TLSGet(tls));
     74
     75    alive = 1;
     76    thread = SDL_CreateThread(ThreadFunc, "One", "#1");
     77    if (thread == NULL) {
     78        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create thread: %s\n", SDL_GetError());
     79        quit(1);
     80    }
     81    SDL_Delay(5 * 1000);
     82    SDL_Log("Waiting for thread #1\n");
     83    alive = 0;
     84    SDL_WaitThread(thread, NULL);
     85
     86    SDL_Log("Main thread data finally: %s\n", (const char *)SDL_TLSGet(tls));
     87
     88    alive = 1;
     89    signal(SIGTERM, killed);
     90    thread = SDL_CreateThread(ThreadFunc, "Two", "#2");
     91    if (thread == NULL) {
     92        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create thread: %s\n", SDL_GetError());
     93        quit(1);
     94    }
     95    raise(SIGTERM);
     96
     97    SDL_Quit();                 /* Never reached */
     98    return (0);                 /* Never reached */
     99}