Example #1
0
	void mainLoop() {
		TRACE_POINT();
		boost::function<void ()> func;

		func = boost::bind(&MessageServer::mainLoop, messageServer.get());
		messageServerThread = ptr(new oxt::thread(
			boost::bind(runAndPrintExceptions, func, true),
			"MessageServer thread", MESSAGE_SERVER_THREAD_STACK_SIZE
		));
		
		poolLoop.start("Pool event loop", 0);
		requestLoop.start("Request event loop", 0);

		
		/* Wait until the watchdog closes the feedback fd (meaning it
		 * was killed) or until we receive an exit message.
		 */
		this_thread::disable_syscall_interruption dsi;
		fd_set fds;
		int largestFd;
		
		FD_ZERO(&fds);
		FD_SET(feedbackFd, &fds);
		FD_SET(exitEvent.fd(), &fds);
		largestFd = (feedbackFd > exitEvent.fd()) ? (int) feedbackFd : exitEvent.fd();
		UPDATE_TRACE_POINT();
		installDiagnosticsDumper();
		if (syscalls::select(largestFd + 1, &fds, NULL, NULL, NULL) == -1) {
			int e = errno;
			uninstallDiagnosticsDumper();
			throw SystemException("select() failed", e);
		}
		
		if (FD_ISSET(feedbackFd, &fds)) {
			/* If the watchdog has been killed then we'll kill all descendant
			 * processes and exit. There's no point in keeping this helper
			 * server running because we can't detect when the web server exits,
			 * and because this helper agent doesn't own the server instance
			 * directory. As soon as passenger-status is run, the server
			 * instance directory will be cleaned up, making this helper agent
			 * inaccessible.
			 */
			P_DEBUG("Watchdog seems to be killed; forcing shutdown of all subprocesses");
			syscalls::killpg(getpgrp(), SIGKILL);
			_exit(2); // In case killpg() fails.
		} else {
			/* We received an exit command. We want to exit 5 seconds after
			 * all clients have disconnected have become inactive.
			 */
			P_DEBUG("Received command to exit gracefully. "
				"Waiting until 5 seconds after all clients have disconnected...");
			while (requestHandler->inactivityTime() < 5000) {
				syscalls::usleep(250000);
			}
			P_DEBUG("It's now 5 seconds after all clients have disconnected. "
				"Proceeding with graceful exit.");
		}
	}
Example #2
0
	void mainLoop() {
		TRACE_POINT();
		
		messageServerThread.reset(new oxt::thread(
			boost::bind(&MessageServer::mainLoop, messageServer.get()),
			"MessageServer thread",
			MESSAGE_SERVER_STACK_SIZE
		));
		
		/* Wait until the watchdog closes the feedback fd (meaning it
		 * was killed) or until we receive an exit message.
		 */
		this_thread::disable_syscall_interruption dsi;
		fd_set fds;
		int largestFd;
		
		FD_ZERO(&fds);
		FD_SET(feedbackFd, &fds);
		FD_SET(exitEvent.fd(), &fds);
		largestFd = (feedbackFd > exitEvent.fd()) ? (int) feedbackFd : exitEvent.fd();
		UPDATE_TRACE_POINT();
		if (syscalls::select(largestFd + 1, &fds, NULL, NULL, NULL) == -1) {
			int e = errno;
			throw SystemException("select() failed", e);
		}
		
		if (FD_ISSET(feedbackFd, &fds)) {
			/* If the watchdog has been killed then we'll kill all descendant
			 * processes and exit. There's no point in keeping this helper
			 * server running because we can't detect when the web server exits,
			 * and because this helper server doesn't own the server instance
			 * directory. As soon as passenger-status is run, the server
			 * instance directory will be cleaned up, making this helper server
			 * inaccessible.
			 */
			syscalls::killpg(getpgrp(), SIGKILL);
			_exit(2); // In case killpg() fails.
		} else {
			/* We received an exit command. We want to exit 5 seconds after
			 * the last client has disconnected, .
			 */
			exitTimer.start();
			exitTimer.wait(5000);
		}
	}