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[FILE BEGIN]
1/*
2  Copyright (C) 1997-2025 Sam Lantinga <[email protected]>
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 <stdlib.h>
16
17#include <SDL3/SDL.h>
18#include <SDL3/SDL_main.h>
19#include <SDL3/SDL_test.h>
20
21static int alive = 0;
22
23/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
24static void
25quit(int rc)
26{
27    SDL_Quit();
28    /* Let 'main()' return normally */
29    if (rc != 0) {
30        exit(rc);
31    }
32}
33
34static int SDLCALL
35ThreadFunc(void *data)
36{
37    /* Set the child thread error string */
38    SDL_SetError("Thread %s (%" SDL_PRIu64 ") had a problem: %s",
39                 (char *)data, SDL_GetCurrentThreadID(), "nevermind");
40    while (alive) {
41        SDL_Log("Thread '%s' is alive!", (char *)data);
42        SDL_Delay(1 * 1000);
43    }
44    SDL_Log("Child thread error string: %s", SDL_GetError());
45    return 0;
46}
47
48int main(int argc, char *argv[])
49{
50    SDL_Thread *thread;
51    SDLTest_CommonState *state;
52    int i;
53    bool enable_threads = true;
54
55    /* Initialize test framework */
56    state = SDLTest_CommonCreateState(argv, 0);
57    if (!state) {
58        return 1;
59    }
60
61    /* Parse commandline */
62    for (i = 1; i < argc;) {
63        int consumed;
64
65        consumed = SDLTest_CommonArg(state, i);
66        if (consumed == 0) {
67            consumed = -1;
68            if (SDL_strcasecmp(argv[i], "--no-threads") == 0) {
69                enable_threads = false;
70                consumed = 1;
71            }
72        }
73        if (consumed < 0) {
74            static const char *options[] = {
75                "[--no-threads]",
76                NULL
77            };
78            SDLTest_CommonLogUsage(state, argv[0], options);
79            return 1;
80        }
81        i += consumed;
82    }
83
84    /* Load the SDL library */
85    if (!SDL_Init(0)) {
86        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s", SDL_GetError());
87        return 1;
88    }
89
90    /* Set the error value for the main thread */
91    SDL_SetError("No worries");
92
93    if (SDL_GetEnvironmentVariable(SDL_GetEnvironment(), "SDL_TESTS_QUICK") != NULL) {
94        SDL_Log("Not running slower tests");
95        SDL_Quit();
96        return 0;
97    }
98
99    if (enable_threads) {
100        alive = 1;
101        thread = SDL_CreateThread(ThreadFunc, NULL, "#1");
102        if (!thread) {
103            SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create thread: %s", SDL_GetError());
104            quit(1);
105        }
106        SDL_Delay(5 * 1000);
107        SDL_Log("Waiting for thread #1");
108        alive = 0;
109        SDL_WaitThread(thread, NULL);
110    }
111
112    SDL_Log("Main thread error string: %s", SDL_GetError());
113
114    SDL_Quit();
115    SDLTest_CommonDestroyState(state);
116    return 0;
117}
118
[FILE END]
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