Fix when monitor is not on

src/main.d

@@ -852,25 +852,34 @@ int main(string[] cliArgs) {
 				}
 
 				if(performMonitor) {
-					// Start the worker and wait for event
-					if(!filesystemMonitor.isWorking()) {
-						workerTid.send(1);
-					}
-
-					int res = 1;
 					auto nextCheckTime = lastCheckTime + checkOnlineInterval;
 					currentTime = MonoTime.currTime();
-					receiveTimeout(nextCheckTime - currentTime, (int msg) {
-						res = msg;
-					});
-					if(res == -1) {
-						log.error("Error: Monitor worker failed.");
-						monitorFailures = true;
-						performMonitor = false;
+					auto sleepTime = nextCheckTime - currentTime;
+					if(filesystemMonitor.initialised) {
+						// If local monitor is on
+						// start the worker and wait for event
+						if(!filesystemMonitor.isWorking()) {
+							workerTid.send(1);
+						}
+						int res = 1;
+
+						receiveTimeout(sleepTime, (int msg) {
+							res = msg;
+						});
+						if(res == -1) {
+							log.error("Error: Monitor worker failed.");
+							monitorFailures = true;
+							performMonitor = false;
+						}
+					} else {
+						// no hooks available, nothing to check
+						Thread.sleep(sleepTime);
 					}
 				}
 			}
-			workerTid.send(0); // exit signal
+			if (filesystemMonitor.initialised) {
+				workerTid.send(0); // exit signal
+			}
 		}
 	} else {
 		// Exit application as the sync engine could not be initialised

src/monitor.d

@@ -154,6 +154,8 @@ final class Monitor {
 	bool skip_symlinks = false;
 	// check for .nosync if enabled
 	bool check_nosync = false;
+	// check if initialised
+	bool initialised = false;
 
 	// Configure Private Class Variables
 	shared(MonitorBackgroundWorker) worker;
@@ -204,6 +206,8 @@ final class Monitor {
 
 	// Shutdown the monitor class
 	void shutdown() {
+		if(!initialised)
+			return;
 		worker.shutdown();
 		wdToDirName = null;
 	}
@@ -352,6 +356,8 @@ final class Monitor {
 
 	// Update
 	void update(bool useCallbacks = true) {
+		if(!initialised)
+			return;
 
 		pollfd fds = {
 			fd: worker.fd,
@@ -495,6 +501,7 @@ final class Monitor {
 	}
 
 	Tid watch() {
+		initialised = true;
 		return spawn(&startMonitorJob, worker, thisTid);
 	}