1 /* 2 Copyright (C) 1997-2014 Sam Lantinga <slouken (at) 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 and error handling */ 14 15 #include <stdio.h> 16 #include <stdlib.h> 17 #include <signal.h> 18 19 #include "SDL.h" 20 #include "SDL_thread.h" 21 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 /* Set the child thread error string */ 36 SDL_SetError("Thread %s (%lu) had a problem: %s", 37 (char *) data, SDL_ThreadID(), "nevermind"); 38 while (alive) { 39 SDL_Log("Thread '%s' is alive!\n", (char *) data); 40 SDL_Delay(1 * 1000); 41 } 42 SDL_Log("Child thread error string: %s\n", SDL_GetError()); 43 return (0); 44 } 45 46 int 47 main(int argc, char *argv[]) 48 { 49 SDL_Thread *thread; 50 51 /* Enable standard application logging */ 52 SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO); 53 54 /* Load the SDL library */ 55 if (SDL_Init(0) < 0) { 56 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError()); 57 return (1); 58 } 59 60 /* Set the error value for the main thread */ 61 SDL_SetError("No worries"); 62 63 alive = 1; 64 thread = SDL_CreateThread(ThreadFunc, NULL, "#1"); 65 if (thread == NULL) { 66 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create thread: %s\n", SDL_GetError()); 67 quit(1); 68 } 69 SDL_Delay(5 * 1000); 70 SDL_Log("Waiting for thread #1\n"); 71 alive = 0; 72 SDL_WaitThread(thread, NULL); 73 74 SDL_Log("Main thread error string: %s\n", SDL_GetError()); 75 76 SDL_Quit(); 77 return (0); 78 } 79
