Method initializeTerminationAndSignalProcessing

base/daemon/BaseDaemon.cpp:991–1037

void BaseDaemon::initializeTerminationAndSignalProcessing()
{
    SentryWriter::initialize(config());
    std::set_terminate(terminate_handler);

    /// We want to avoid SIGPIPE when working with sockets and pipes, and just handle return value/errno instead.
    blockSignals({SIGPIPE});

    /// Setup signal handlers.
    /// SIGTSTP is added for debugging purposes. To output a stack trace of any running thread at anytime.

    addSignalHandler({SIGABRT, SIGSEGV, SIGILL, SIGBUS, SIGSYS, SIGFPE, SIGPIPE, SIGTSTP, SIGTRAP}, signalHandler, &handled_signals);
    addSignalHandler({SIGHUP, SIGUSR1}, closeLogsSignalHandler, &handled_signals);
    addSignalHandler({SIGINT, SIGQUIT, SIGTERM}, terminateRequestedSignalHandler, &handled_signals);
    addSignalHandler({SIGUSR2}, minidumpSignalHandler, &handled_signals);

#if defined(SANITIZER)
    __sanitizer_set_death_callback(sanitizerDeathCallback);
#endif

    /// Set up Poco ErrorHandler for Poco Threads.
    static KillingErrorHandler killing_error_handler;
    Poco::ErrorHandler::set(&killing_error_handler);

    signal_pipe.setNonBlockingWrite();
    signal_pipe.tryIncreaseSize(1 << 20);

    signal_listener = std::make_unique<SignalListener>(*this);
    signal_listener_thread.start(*signal_listener);

#if defined(__ELF__) && !defined(__FreeBSD__)
    String build_id_hex = DB::SymbolIndex::instance()->getBuildIDHex();
    if (build_id_hex.empty())
        build_id_info = "no build id";
    else
        build_id_info = "build id: " + build_id_hex;
#else
    build_id_info = "no build id";
#endif

#if defined(__linux__)
    std::string executable_path = getExecutablePath();

    if (!executable_path.empty())
        stored_binary_hash = DB::Elf(executable_path).getBinaryHash();
#endif
}

void BaseDaemon::logRevision() const
{