trigger heartbeat with a factor of missed heartbeats instead of multiple times. Change logging a bit

include/tr/event_dispatcher.h

@@ -53,6 +53,7 @@ TR_CLASS(TR_EventDispatcher) {
 	int                    running;
 	int                    heartbeat;    // milliseconds
 	int                    nextbeat;     // milliseconds
+	size_t                 n_beats;
 	TR_EventDispatcherMode mode;
 };
 TR_INSTANCE_INIT(TR_EventDispatcher);

src/event_dispatcher_start.c

@@ -48,7 +48,8 @@ TR_eventDispatcherStart(TR_EventDispatcher this)
 		now = tp.tv_sec * 1000 + tp.tv_nsec / 1000000;
 
 		if (this->nextbeat && this->nextbeat <= now) {
-			this->nextbeat += this->heartbeat;
+			this->n_beats   = ((now - this->nextbeat) / this->heartbeat) + 1;
+			this->nextbeat += this->n_beats * this->heartbeat;
 			event = TR_eventSubjectEmit(
 					(TR_EventSubject)this,
 					TR_DISPATCHER_EVENT_HEARTBEAT,

src/event_handler_handle_event.c

@@ -38,8 +38,9 @@ TR_eventHandlerHandleEvent(TR_EventHandler this, TR_Event event)
 			TR_sdbm((unsigned char *)&event->id, sizeof(event->id)));
 
 	TR_loggerLog(TR_logger, TR_LOGGER_DEBUG,
-			"%zd - HANDLE: %s event on %p with no. %d",
+			"%zd - HANDLE(%zd): %s event on %p with no. %d",
 			this->dispatcher[0]->events->nmsg,
+			event->subject->emitted,
 			TR_getEventString(event),
 			event->subject,
 			event->serial);

src/event_handler_issue_event.c

@@ -37,8 +37,9 @@ TR_eventHandlerIssueEvent(TR_EventHandler this, TR_Event event)
 			TR_eventDispatcherEnqueueEvent(this->dispatcher[i], event);
 
 			TR_loggerLog(TR_logger, TR_LOGGER_DEBUG,
-					"%zd - ISSUE: %s event on %p with no. %d",
+					"%zd - ISSUE(%zd): %s event on %p with no. %d",
 					this->dispatcher[i]->events->nmsg,
+					event->subject->emitted,
 					TR_getEventString(event),
 					event->subject,
 					event->serial);