Function handle_signal_internal

library/Crashlog.cpp:47–64

Force this method to be inlined so that it doesn't create a stack frame

// Force this method to be inlined so that it doesn't create a stack frame
[[gnu::always_inline]] inline void handle_signal_internal(int sig) {
    if (shutdown.load() || crashed.exchange(true) || crashlog_ready.load()) {
        // Ensure the signal handler doesn't try to write a crashlog
        // whilst the crashlog thread is unavailable.
        std::quick_exit(1);
    }
    crash_info.signal = sig;
    crash_info.backtrace_entries = backtrace(crash_info.backtrace, BT_ENTRY_MAX);

    // Signal saving of crashlog
    flag_set(crashlog_ready);
    // Wait for completion via eventfd read, if fd isn't valid, bail
    if (crashlog_complete != -1) {
        [[maybe_unused]] uint64_t v;
        [[maybe_unused]] auto _ = read(crashlog_complete, &v, sizeof(v));
    }
    std::quick_exit(1);
}

extern "C" void dfhack_crashlog_handle_signal(int sig) {
    handle_signal_internal(sig);