Function DeferredInitThread

src/platform/linux/init.cpp:537–576

}

static void* DeferredInitThread(void*)
{
    // Poll for steamclient.so -- under LD_PRELOAD we load before Steam has
    // mapped steamclient, so a fixed delay is insufficient.
    DebugLog("[CR] DeferredInit: waiting for steamclient.so\n");
    for (int i = 0; i < 20; i++) {  // up to 10 seconds
        if (SteamclientMapped()) break;
        usleep(500000);
    }
    DebugLog("[CR] DeferredInit: starting\n");

    // Install crash guard so a bad memory read aborts correctly
    struct sigaction sa = {}, old_segv = {}, old_bus = {};
    sa.sa_handler = ScanCrashHandler;
    sigemptyset(&sa.sa_mask);
    sa.sa_flags = SA_RESETHAND;  // Reset to default on signal (async-signal-safe)
    sigaction(SIGSEGV, &sa, &old_segv);
    sigaction(SIGBUS, &sa, &old_bus);

    g_inScan = 1;
    if (sigsetjmp(g_crashJmpBuf, 1) == 0) {
        DoInit();
    } else {
        DebugLog("[CR] DeferredInit: CRASHED during init, aborting safely\n");
        Log::Error("Caught signal during init - incompatible steamclient? Hooks NOT installed.");
        Notify("Crashed during init - hooks disabled", true);
    }
    g_inScan = 0;

    // Restore original handlers and install crash dump handler if init succeeded
    sigaction(SIGSEGV, &old_segv, nullptr);
    sigaction(SIGBUS, &old_bus, nullptr);

    if (g_initialized.load(std::memory_order_acquire)) {
        InstallCrashDumpHandler();
    }

    g_initThreadDone.store(true, std::memory_order_release);
    return nullptr;
}