Function signal_handler

sources/utils/DefaultSignalHandler.cpp:117–162

Note that this signal handler is not async signal safe ! * Ideally a signal handler should only flip a bit and defer * heavy work to some kind of bottom-half processing. */

	 * Ideally a signal handler should only flip a bit and defer
	 * heavy work to some kind of bottom-half processing. */
	void signal_handler(int signum, siginfo_t* /*info*/, void* /*context*/)
	{
		const char* name = "UNKNOWN SIGNAL";

		for (const auto& s : ALL_SIGNALS) {
			if (s.number == signum) {
				name = s.name;
				break;
			}
		}

		write_to_stderr("\n");
		write_to_stderr("HyperHDR caught signal :");
		write_to_stderr(name);
		write_to_stderr("\n");

		/* Anything below here is unsafe ! */

		switch (signum)
		{
		case SIGBUS:
		case SIGSEGV:
		case SIGABRT:
		case SIGFPE:
			print_trace();

			/* Don't catch our own signal */
			install_default_handler(signum);

			kill(getpid(), signum);
			return;
		case SIGINT:
		case SIGTERM:
		case SIGPIPE:
		default:
			/* If the signal_handler is hit before the event loop is started,
			 * following call will do nothing. So we queue the call. */

			HyperHdrInstance::signalTerminateTriggered();

			QUEUE_CALL_0(qApp, quit);

			// Reset signal handler to default (in case this handler is not capable of stopping)
			install_default_handler(signum);
		}
	}

} // namespace DefaultSignalHandler
#endif // _WIN32