Function watchdog_signal_handler

tests/timeout_watchdog.h:191–224

static fl::thread::id g_main_thread_id;

inline void watchdog_signal_handler(int sig) {
    (void)sig;  // Unused

    if (!g_watchdog_active.load()) {
        return;
    }

    // Timeout occurred!
    g_watchdog_triggered.store(true);

    fprintf(stderr, "\n");
    fprintf(stderr, "================================================================================\n");
    fprintf(stderr, "INTERNAL TIMEOUT WATCHDOG TRIGGERED\n");
    fprintf(stderr, "================================================================================\n");
    fprintf(stderr, "Test exceeded internal timeout of %.1f seconds\n", g_timeout_seconds);
    fprintf(stderr, "Dumping main thread stack trace...\n");
    fprintf(stderr, "================================================================================\n");
    fprintf(stderr, "\n");
    fflush(stderr);

    // Dump stack trace
    print_stacktrace();

    fprintf(stderr, "\n");
    fprintf(stderr, "================================================================================\n");
    fprintf(stderr, "END TIMEOUT WATCHDOG\n");
    fprintf(stderr, "Exiting with code 1\n");
    fprintf(stderr, "================================================================================\n");
    fprintf(stderr, "\n");
    fflush(stderr);

    // Exit with code 1
    _exit(1);
}

inline void setup(double timeout_seconds = 20.0) {
    // Check if watchdog should be disabled