1/*
2 Copyright (C) 1997-2021 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 and error handling */
14
15#include <stdio.h>
16#include <stdlib.h>
17
18#include "SDL.h"
19
20static int alive = 0;
21
22/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
23static void
24quit(int rc)
25{
26 SDL_Quit();
27 exit(rc);
28}
29
30int SDLCALL
31ThreadFunc(void *data)
32{
33 /* Set the child thread error string */
34 SDL_SetError("Thread %s (%lu) had a problem: %s",
35 (char *) data, SDL_ThreadID(), "nevermind");
36 while (alive) {
37 SDL_Log("Thread '%s' is alive!\n", (char *) data);
38 SDL_Delay(1 * 1000);
39 }
40 SDL_Log("Child thread error string: %s\n", SDL_GetError());
41 return (0);
42}
43
44int
45main(int argc, char *argv[])
46{
47 SDL_Thread *thread;
48
49 /* Enable standard application logging */
50 SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
51
52 /* Load the SDL library */
53 if (SDL_Init(0) < 0) {
54 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
55 return (1);
56 }
57
58 /* Set the error value for the main thread */
59 SDL_SetError("No worries");
60
61 alive = 1;
62 thread = SDL_CreateThread(ThreadFunc, NULL, "#1");
63 if (thread == NULL) {
64 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create thread: %s\n", SDL_GetError());
65 quit(1);
66 }
67 SDL_Delay(5 * 1000);
68 SDL_Log("Waiting for thread #1\n");
69 alive = 0;
70 SDL_WaitThread(thread, NULL);
71
72 SDL_Log("Main thread error string: %s\n", SDL_GetError());
73
74 SDL_Quit();
75 return (0);
76}
77