test/testthread.c
author Philipp Wiesemann <philipp.wiesemann@arcor.de>
Wed, 18 Feb 2015 21:31:21 +0100
changeset 9356 e87d6e1e812a
parent 8583 fb2933ca805f
child 9619 b94b6d0bff0f
permissions -rw-r--r--
Removed redundant include statements from test programs.

The needed header files are already included with SDL.h. Still including them in
the test programs is confusing because it somehow suggests they would be needed.
     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 
    21 static SDL_TLSID tls;
    22 static int alive = 0;
    23 
    24 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
    25 static void
    26 quit(int rc)
    27 {
    28     SDL_Quit();
    29     exit(rc);
    30 }
    31 
    32 int SDLCALL
    33 ThreadFunc(void *data)
    34 {
    35     SDL_TLSSet(tls, "baby thread", NULL);
    36     SDL_Log("Started thread %s: My thread id is %lu, thread data = %s\n",
    37            (char *) data, SDL_ThreadID(), (const char *)SDL_TLSGet(tls));
    38     while (alive) {
    39         SDL_Log("Thread '%s' is alive!\n", (char *) data);
    40         SDL_Delay(1 * 1000);
    41     }
    42     SDL_Log("Thread '%s' exiting!\n", (char *) data);
    43     return (0);
    44 }
    45 
    46 static void
    47 killed(int sig)
    48 {
    49     SDL_Log("Killed with SIGTERM, waiting 5 seconds to exit\n");
    50     SDL_Delay(5 * 1000);
    51     alive = 0;
    52     quit(0);
    53 }
    54 
    55 int
    56 main(int argc, char *argv[])
    57 {
    58     SDL_Thread *thread;
    59 
    60 	/* Enable standard application logging */
    61     SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
    62 
    63     /* Load the SDL library */
    64     if (SDL_Init(0) < 0) {
    65         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
    66         return (1);
    67     }
    68 
    69     tls = SDL_TLSCreate();
    70     SDL_assert(tls);
    71     SDL_TLSSet(tls, "main thread", NULL);
    72     SDL_Log("Main thread data initially: %s\n", (const char *)SDL_TLSGet(tls));
    73 
    74     alive = 1;
    75     thread = SDL_CreateThread(ThreadFunc, "One", "#1");
    76     if (thread == NULL) {
    77         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create thread: %s\n", SDL_GetError());
    78         quit(1);
    79     }
    80     SDL_Delay(5 * 1000);
    81     SDL_Log("Waiting for thread #1\n");
    82     alive = 0;
    83     SDL_WaitThread(thread, NULL);
    84 
    85     SDL_Log("Main thread data finally: %s\n", (const char *)SDL_TLSGet(tls));
    86 
    87     alive = 1;
    88     signal(SIGTERM, killed);
    89     thread = SDL_CreateThread(ThreadFunc, "Two", "#2");
    90     if (thread == NULL) {
    91         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create thread: %s\n", SDL_GetError());
    92         quit(1);
    93     }
    94     raise(SIGTERM);
    95 
    96     SDL_Quit();                 /* Never reached */
    97     return (0);                 /* Never reached */
    98 }