C++ (Cpp) message_pump_stop Exemples

Exemple #1

Fichier : main_windows.c Projet : wopl/fhem

// NOTE: this function needs to call RegisterServiceCtrlHandlerEx and
// SetServiceStatus in all circumstances if brickd is running as service
static int generic_main(int log_to_file, int debug) {
	int exit_code = EXIT_FAILURE;
	const char *mutex_name = "Global\\Tinkerforge-Brick-Daemon-Single-Instance";
	HANDLE mutex_handle = NULL;
	int mutex_error = 0;
	DWORD service_exit_code = NO_ERROR;
	int rc;
	char filename[1024];
	int i;
	FILE *logfile = NULL;
	WSADATA wsa_data;
	DEV_BROADCAST_DEVICEINTERFACE notification_filter;
	HDEVNOTIFY notification_handle;

	mutex_handle = OpenMutex(SYNCHRONIZE, FALSE, mutex_name);

	if (mutex_handle == NULL) {
		rc = GetLastError();

		if (rc == ERROR_ACCESS_DENIED) {
			rc = service_is_running();

			if (rc < 0) {
				mutex_error = 1;
				// FIXME: set service_exit_code

				goto error_mutex;
			} else if (rc) {
				mutex_error = 1;
				service_exit_code = ERROR_SERVICE_ALREADY_RUNNING;

				log_error("Could not start as %s, another instance is already running as service",
				          _run_as_service ? "service" : "console application");

				goto error_mutex;
			}
		}

		if (rc != ERROR_FILE_NOT_FOUND) {
			mutex_error = 1;
			// FIXME: set service_exit_code
			rc += ERRNO_WINAPI_OFFSET;

			log_error("Could not open single instance mutex: %s (%d)",
			          get_errno_name(rc), rc);

			goto error_mutex;
		}
	}

	if (mutex_handle != NULL) {
		mutex_error = 1;
		service_exit_code = ERROR_SERVICE_ALREADY_RUNNING;

		log_error("Could not start as %s, another instance is already running",
		          _run_as_service ? "service" : "console application");

		goto error_mutex;
	}

	mutex_handle = CreateMutex(NULL, FALSE, mutex_name);

	if (mutex_handle == NULL) {
		mutex_error = 1;
		// FIXME: set service_exit_code
		rc = ERRNO_WINAPI_OFFSET + GetLastError();

		log_error("Could not create single instance mutex: %s (%d)",
		          get_errno_name(rc), rc);

		goto error_mutex;
	}

	if (!_run_as_service &&
	    !SetConsoleCtrlHandler(console_ctrl_handler, TRUE)) {
		rc = ERRNO_WINAPI_OFFSET + GetLastError();

		log_warn("Could not set console control handler: %s (%d)",
		          get_errno_name(rc), rc);
	}

	if (log_to_file) {
		if (GetModuleFileName(NULL, filename, sizeof(filename)) == 0) {
			rc = ERRNO_WINAPI_OFFSET + GetLastError();

			log_warn("Could not get module file name: %s (%d)",
			         get_errno_name(rc), rc);
		} else {
			i = strlen(filename);

			if (i < 4) {
				log_warn("Module file name '%s' is too short", filename);
			} else {
				strcpy(filename + i - 3, "log");

				logfile = fopen(filename, "a+");

				if (logfile == NULL) {
					log_warn("Could not open logfile '%s'", filename);
				} else {
					log_set_file(logfile);
				}
			}
		}
	}

	if (debug) {
		log_set_level(LOG_CATEGORY_EVENT, LOG_LEVEL_DEBUG);
		log_set_level(LOG_CATEGORY_USB, LOG_LEVEL_DEBUG);
		log_set_level(LOG_CATEGORY_NETWORK, LOG_LEVEL_DEBUG);
		log_set_level(LOG_CATEGORY_HOTPLUG, LOG_LEVEL_DEBUG);
		log_set_level(LOG_CATEGORY_OTHER, LOG_LEVEL_DEBUG);
	} else {
		log_set_level(LOG_CATEGORY_EVENT, config_get_log_level(LOG_CATEGORY_EVENT));
		log_set_level(LOG_CATEGORY_USB, config_get_log_level(LOG_CATEGORY_USB));
		log_set_level(LOG_CATEGORY_NETWORK, config_get_log_level(LOG_CATEGORY_NETWORK));
		log_set_level(LOG_CATEGORY_HOTPLUG, config_get_log_level(LOG_CATEGORY_HOTPLUG));
		log_set_level(LOG_CATEGORY_OTHER, config_get_log_level(LOG_CATEGORY_OTHER));
	}

	if (_run_as_service) {
		log_info("Brick Daemon %s started (as service)", VERSION_STRING);
	} else {
		log_info("Brick Daemon %s started", VERSION_STRING);
	}

	if (config_has_error()) {
		log_warn("Errors found in config file '%s', run with --check-config option for details",
		         _config_filename);
	}

	// initialize service status
error_mutex:
	if (_run_as_service) {
		if (service_init(service_control_handler) < 0) {
			// FIXME: set service_exit_code
			goto error;
		}

		if (!mutex_error) {
			// service is starting
			service_set_status(SERVICE_START_PENDING, NO_ERROR);
		}
	}

	if (mutex_error) {
		goto error;
	}

	// initialize WinSock2
	if (WSAStartup(MAKEWORD(2, 2), &wsa_data) != 0) {
		// FIXME: set service_exit_code
		rc = ERRNO_WINAPI_OFFSET + WSAGetLastError();

		log_error("Could not initialize Windows Sockets 2.2: %s (%d)",
		          get_errno_name(rc), rc);

		goto error_event;
	}

	if (event_init() < 0) {
		// FIXME: set service_exit_code
		goto error_event;
	}

	if (usb_init() < 0) {
		// FIXME: set service_exit_code
		goto error_usb;
	}

	// create notification pipe
	if (pipe_create(_notification_pipe) < 0) {
		// FIXME: set service_exit_code

		log_error("Could not create notification pipe: %s (%d)",
		          get_errno_name(errno), errno);

		goto error_pipe;
	}

	if (event_add_source(_notification_pipe[0], EVENT_SOURCE_TYPE_GENERIC,
	                     EVENT_READ, forward_notifications, NULL) < 0) {
		// FIXME: set service_exit_code
		goto error_pipe_add;
	}

	// register device notification
	ZeroMemory(&notification_filter, sizeof(notification_filter));

	notification_filter.dbcc_size = sizeof(notification_filter);
	notification_filter.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
	notification_filter.dbcc_classguid = GUID_DEVINTERFACE_USB_DEVICE;

	if (_run_as_service) {
		notification_handle = RegisterDeviceNotification((HANDLE)service_get_status_handle(),
		                                                 &notification_filter,
		                                                 DEVICE_NOTIFY_SERVICE_HANDLE);
	} else {
		if (message_pump_start() < 0) {
			// FIXME: set service_exit_code
			goto error_pipe_add;
		}

		notification_handle = RegisterDeviceNotification(_message_pump_hwnd,
		                                                 &notification_filter,
		                                                 DEVICE_NOTIFY_WINDOW_HANDLE);
	}

	if (notification_handle == NULL) {
		// FIXME: set service_exit_code
		rc = ERRNO_WINAPI_OFFSET + GetLastError();

		log_error("Could not register for device notification: %s (%d)",
		          get_errno_name(rc), rc);

		goto error_notification;
	}

	if (network_init() < 0) {
		// FIXME: set service_exit_code
		goto error_network;
	}

	// running
	if (_run_as_service) {
		service_set_status(SERVICE_RUNNING, NO_ERROR);
	}

	if (event_run() < 0) {
		// FIXME: set service_exit_code
		goto error_run;
	}

	exit_code = EXIT_SUCCESS;

error_run:
	network_exit();

error_network:
	UnregisterDeviceNotification(notification_handle);

error_notification:
	if (!_run_as_service) {
		message_pump_stop();
	}

	event_remove_source(_notification_pipe[0], EVENT_SOURCE_TYPE_GENERIC);

error_pipe_add:
	pipe_destroy(_notification_pipe);

error_pipe:
	usb_exit();

error_usb:
	event_exit();

error_event:
	log_info("Brick Daemon %s stopped", VERSION_STRING);

error:
	log_exit();

	config_exit();

	if (_run_as_service) {
		// because the service process can be terminated at any time after
		// entering SERVICE_STOPPED state the mutex is closed beforehand,
		// even though this creates a tiny time window in which the service
		// is still running but the mutex is not held anymore
		if (mutex_handle != NULL) {
			CloseHandle(mutex_handle);
		}

		// service is now stopped
		service_set_status(SERVICE_STOPPED, service_exit_code);
	} else {
		if (_pause_before_exit) {
			printf("Press any key to exit...\n");
			getch();
		}

		if (mutex_handle != NULL) {
			CloseHandle(mutex_handle);
		}
	}

	return exit_code;
}

Exemple #2

Fichier : main_windows.c Projet : Loremipsum1988/brickd

// NOTE: this function needs to call RegisterServiceCtrlHandlerEx and
// SetServiceStatus in all circumstances if brickd is running as service
static int generic_main(bool log_to_file, bool debug, bool libusb_debug) {
	int exit_code = EXIT_FAILURE;
	const char *mutex_name = "Global\\Tinkerforge-Brick-Daemon-Single-Instance";
	HANDLE mutex_handle = NULL;
	bool fatal_error = false;
	DWORD service_exit_code = NO_ERROR;
	int rc;
	char filename[1024];
	int i;
	FILE *log_file = NULL;
	WSADATA wsa_data;
	DEV_BROADCAST_DEVICEINTERFACE notification_filter;
	HDEVNOTIFY notification_handle;

	mutex_handle = OpenMutex(SYNCHRONIZE, FALSE, mutex_name);

	if (mutex_handle == NULL) {
		rc = GetLastError();

		if (rc == ERROR_ACCESS_DENIED) {
			rc = service_is_running();

			if (rc < 0) {
				fatal_error = true;
				// FIXME: set service_exit_code

				goto error_mutex;
			} else if (rc) {
				fatal_error = true;
				service_exit_code = ERROR_SERVICE_ALREADY_RUNNING;

				log_error("Could not start as %s, another instance is already running as service",
				          _run_as_service ? "service" : "console application");

				goto error_mutex;
			}
		}

		if (rc != ERROR_FILE_NOT_FOUND) {
			fatal_error = true;
			// FIXME: set service_exit_code
			rc += ERRNO_WINAPI_OFFSET;

			log_error("Could not open single instance mutex: %s (%d)",
			          get_errno_name(rc), rc);

			goto error_mutex;
		}
	}

	if (mutex_handle != NULL) {
		fatal_error = true;
		service_exit_code = ERROR_SERVICE_ALREADY_RUNNING;

		log_error("Could not start as %s, another instance is already running",
		          _run_as_service ? "service" : "console application");

		goto error_mutex;
	}

	mutex_handle = CreateMutex(NULL, FALSE, mutex_name);

	if (mutex_handle == NULL) {
		fatal_error = true;
		// FIXME: set service_exit_code
		rc = ERRNO_WINAPI_OFFSET + GetLastError();

		log_error("Could not create single instance mutex: %s (%d)",
		          get_errno_name(rc), rc);

		goto error_mutex;
	}

	if (log_to_file) {
		if (GetModuleFileName(NULL, filename, sizeof(filename)) == 0) {
			rc = ERRNO_WINAPI_OFFSET + GetLastError();

			log_warn("Could not get module file name: %s (%d)",
			         get_errno_name(rc), rc);
		} else {
			i = strlen(filename);

			if (i < 4) {
				log_warn("Module file name '%s' is too short", filename);
			} else {
				filename[i - 3] = '\0';
				string_append(filename, "log", sizeof(filename));

				log_file = fopen(filename, "a+");

				if (log_file == NULL) {
					log_warn("Could not open log file '%s'", filename);
				} else {
					printf("Logging to '%s'\n", filename);

					log_set_file(log_file);
				}
			}
		}
	} else if (_run_as_service) {
		log_set_file(NULL);
	}

	if (!_run_as_service &&
	    !SetConsoleCtrlHandler(console_ctrl_handler, TRUE)) {
		rc = ERRNO_WINAPI_OFFSET + GetLastError();

		log_warn("Could not set console control handler: %s (%d)",
		         get_errno_name(rc), rc);
	}

	log_set_debug_override(debug);

	log_set_level(LOG_CATEGORY_EVENT, config_get_option("log_level.event")->value.log_level);
	log_set_level(LOG_CATEGORY_USB, config_get_option("log_level.usb")->value.log_level);
	log_set_level(LOG_CATEGORY_NETWORK, config_get_option("log_level.network")->value.log_level);
	log_set_level(LOG_CATEGORY_HOTPLUG, config_get_option("log_level.hotplug")->value.log_level);
	log_set_level(LOG_CATEGORY_HARDWARE, config_get_option("log_level.hardware")->value.log_level);
	log_set_level(LOG_CATEGORY_WEBSOCKET, config_get_option("log_level.websocket")->value.log_level);
	log_set_level(LOG_CATEGORY_OTHER, config_get_option("log_level.other")->value.log_level);

	if (config_has_error()) {
		log_error("Error(s) in config file '%s', run with --check-config option for details",
		          _config_filename);

		fatal_error = true;

		goto error_config;
	}

	if (_run_as_service) {
		log_info("Brick Daemon %s started (as service)", VERSION_STRING);
	} else {
		log_info("Brick Daemon %s started", VERSION_STRING);
	}

	if (config_has_warning()) {
		log_warn("Warning(s) in config file '%s', run with --check-config option for details",
		         _config_filename);
	}

	// initialize service status
error_config:
error_mutex:
	if (_run_as_service) {
		if (service_init(service_control_handler) < 0) {
			// FIXME: set service_exit_code
			goto error;
		}

		if (!fatal_error) {
			// service is starting
			service_set_status(SERVICE_START_PENDING, NO_ERROR);
		}
	}

	if (fatal_error) {
		goto error;
	}

	// initialize WinSock2
	if (WSAStartup(MAKEWORD(2, 2), &wsa_data) != 0) {
		// FIXME: set service_exit_code
		rc = ERRNO_WINAPI_OFFSET + WSAGetLastError();

		log_error("Could not initialize Windows Sockets 2.2: %s (%d)",
		          get_errno_name(rc), rc);

		goto error_event;
	}

	if (event_init() < 0) {
		// FIXME: set service_exit_code
		goto error_event;
	}

	if (hardware_init() < 0) {
		// FIXME: set service_exit_code
		goto error_hardware;
	}

	if (usb_init(libusb_debug) < 0) {
		// FIXME: set service_exit_code
		goto error_usb;
	}

	// create notification pipe
	if (pipe_create(&_notification_pipe) < 0) {
		// FIXME: set service_exit_code

		log_error("Could not create notification pipe: %s (%d)",
		          get_errno_name(errno), errno);

		goto error_pipe;
	}

	if (event_add_source(_notification_pipe.read_end, EVENT_SOURCE_TYPE_GENERIC,
	                     EVENT_READ, forward_notifications, NULL) < 0) {
		// FIXME: set service_exit_code
		goto error_pipe_add;
	}

	// register device notification
	ZeroMemory(&notification_filter, sizeof(notification_filter));

	notification_filter.dbcc_size = sizeof(notification_filter);
	notification_filter.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
	notification_filter.dbcc_classguid = GUID_DEVINTERFACE_USB_DEVICE;

	if (_run_as_service) {
		notification_handle = RegisterDeviceNotification((HANDLE)service_get_status_handle(),
		                                                 &notification_filter,
		                                                 DEVICE_NOTIFY_SERVICE_HANDLE);
	} else {
		if (message_pump_start() < 0) {
			// FIXME: set service_exit_code
			goto error_pipe_add;
		}

		notification_handle = RegisterDeviceNotification(_message_pump_hwnd,
		                                                 &notification_filter,
		                                                 DEVICE_NOTIFY_WINDOW_HANDLE);
	}

	if (notification_handle == NULL) {
		// FIXME: set service_exit_code
		rc = ERRNO_WINAPI_OFFSET + GetLastError();

		log_error("Could not register for device notification: %s (%d)",
		          get_errno_name(rc), rc);

		goto error_notification;
	}

	if (network_init() < 0) {
		// FIXME: set service_exit_code
		goto error_network;
	}

	// running
	if (_run_as_service) {
		service_set_status(SERVICE_RUNNING, NO_ERROR);
	}

	if (event_run(network_cleanup_clients_and_zombies) < 0) {
		// FIXME: set service_exit_code
		goto error_run;
	}

	exit_code = EXIT_SUCCESS;

error_run:
	network_exit();

error_network:
	UnregisterDeviceNotification(notification_handle);

error_notification:
	if (!_run_as_service) {
		message_pump_stop();
	}

	event_remove_source(_notification_pipe.read_end, EVENT_SOURCE_TYPE_GENERIC);

error_pipe_add:
	pipe_destroy(&_notification_pipe);

error_pipe:
	usb_exit();

error_usb:
	hardware_exit();

error_hardware:
	event_exit();

error_event:
	log_info("Brick Daemon %s stopped", VERSION_STRING);

error:
	if (!_run_as_service) {
		// unregister the console handler before exiting the log. otherwise a
		// control event might be send to the control handler after the log
		// is not available anymore and the control handler tries to write a
		// log messages triggering a crash. this situation could easily be
		// created by clicking the close button of the command prompt window
		// while the getch call is waiting for the user to press a key.
		SetConsoleCtrlHandler(console_ctrl_handler, FALSE);
	}

	log_exit();

	config_exit();

	if (_run_as_service) {
		// because the service process can be terminated at any time after
		// entering SERVICE_STOPPED state the mutex is closed beforehand,
		// even though this creates a tiny time window in which the service
		// is still running but the mutex is not held anymore
		if (mutex_handle != NULL) {
			CloseHandle(mutex_handle);
		}

		// service is now stopped
		service_set_status(SERVICE_STOPPED, service_exit_code);
	} else {
		if (_pause_before_exit) {
			printf("Press any key to exit...\n");
			getch();
		}

		if (mutex_handle != NULL) {
			CloseHandle(mutex_handle);
		}
	}

	return exit_code;
}