create explicit event done type and reissue event is no handler has returned EVENT_DONE.

include/tr/event_dispatcher.h

@@ -32,6 +32,11 @@
 
 TR_CLASS(TR_EventDispatcher);
 
+typedef enum TR_EventDone_e {
+	TR_EVENT_DONE = 0,
+	TR_EVENT_PENDING
+} TR_EventDone;
+
 #include "tr/event_handler.h"
 
 typedef enum TR_e_EventDispatcherMode {

include/tr/event_handler.h

@@ -35,7 +35,7 @@ TR_CLASS(TR_EventHandler);
 
 #include "tr/event_dispatcher.h"
 
-typedef int (* TR_EventMethod_fptr)(TR_EventHandler, TR_Event);
+typedef TR_EventDone (* TR_EventMethod_fptr)(TR_EventHandler, TR_Event);
 
 TR_CLASS(TR_EventHandler) {
 	TR_EventDispatcher dispatcher[10];
@@ -46,9 +46,9 @@ TR_CLASSVARS_DECL(TR_EventHandler) {
 	TR_Hash event_methods;
 };
 
-void TR_eventHandlerSetDispatcher(TR_EventHandler, TR_EventDispatcher);
-void TR_eventHandlerIssueEvent(TR_EventHandler, TR_Event);
-int  TR_eventHandlerHandleEvent(TR_EventHandler, TR_Event);
+void         TR_eventHandlerSetDispatcher(TR_EventHandler, TR_EventDispatcher);
+void         TR_eventHandlerIssueEvent(TR_EventHandler, TR_Event);
+TR_EventDone TR_eventHandlerHandleEvent(TR_EventHandler, TR_Event);
 
 #define TR_eventHandlerClassCleanup(cname) \
 	(TR__eventHandlerClassCleanup(TR_CLASS_BY_NAME(cname)))
@@ -68,7 +68,6 @@ void TR__eventHandlerClassCleanup(TR_class_ptr);
 					sizeof(TR_EventMethod_fptr)));                       \
 	} while(0)
 
-
 #endif // __TR_EVENT_HANDLER_H__
 
 // vim: set ts=4 sw=4:

src/event_dispatcher_start.c

@@ -38,7 +38,9 @@ TR_eventDispatcherStart(TR_EventDispatcher this)
 	while (this->running || (! TR_queueEmpty(this->events))) {
 		struct timespec tp;
 		int             now; // milliseconds
-		TR_Event        current = NULL;
+		TR_Event        event;
+		TR_Queue        handler_queue;
+		TR_HashValue    handler_queue_hv;
 
 		clock_gettime(CLOCK_REALTIME, &tp);
 		now = tp.tv_sec * 1000 + tp.tv_nsec / 1000000;
@@ -55,43 +57,49 @@ TR_eventDispatcherStart(TR_EventDispatcher this)
 
 		if (TR_queueEmpty(this->events)) {
 			if (TR_EVD_CLIENT == this->mode) {
-				current = TR_eventSubjectEmit(
+				event = TR_eventSubjectEmit(
 						(TR_EventSubject)this,
 						TR_DISPATCHER_EVENT_USER_WAIT,
 						NULL);
 			} else {
-				current = TR_eventSubjectEmit(
+				event = TR_eventSubjectEmit(
 						(TR_EventSubject)this,
 						TR_DISPATCHER_EVENT_DATA_WAIT,
 						NULL);
 			}
 		} else {
-			current = TR_queueGet(this->events);
+			event = TR_queueGet(this->events);
 		}
 
-		if (current) {
-			TR_Queue     handler_queue;
-			TR_HashValue handler_queue_hv = TR_hashGetByVal(
-					this->handler,
-					TR_sdbm(
-						(unsigned char *)&(current->id),
-						sizeof(current->id)));
-
-			handler_queue = handler_queue_hv
-				? *(TR_Queue *)handler_queue_hv->value
-				: NULL;
-
-			if (handler_queue && ! TR_queueEmpty(handler_queue)) {
-				TR_Queue queue_node = handler_queue->first;
-
-				while (queue_node) {
-					TR_EventHandler handler = queue_node->msg;
-					if (TR_eventHandlerHandleEvent(handler, current)) break;
-					queue_node = queue_node->next;
-				}
+		handler_queue_hv = TR_hashGetByVal(
+				this->handler,
+				TR_sdbm(
+					(unsigned char *)&(event->id),
+					sizeof(event->id)));
+
+		handler_queue = handler_queue_hv
+			? *(TR_Queue *)handler_queue_hv->value
+			: NULL;
+
+		if (handler_queue && ! TR_queueEmpty(handler_queue)) {
+			TR_Queue     queue_node = handler_queue->first;
+			TR_EventDone done;
+
+			while (queue_node) {
+				TR_EventHandler handler = queue_node->msg;
+				TR_EventDone    this_done;
+
+				this_done = TR_eventHandlerHandleEvent(handler, event);
+				done = TR_EVENT_DONE == done ? done : this_done;
+
+				queue_node = queue_node->next;
 			}
 
-			TR_delete(current);
+			if (TR_EVENT_DONE == done) {
+				TR_delete(event);
+			} else {
+				TR_eventDispatcherEnqueueEvent(this, event);
+			}
 		}
 	}
 }

src/event_handler_handle_event.c

@@ -27,7 +27,7 @@
 #include "tr/event.h"
 #include "tr/event_handler.h"
 
-int
+TR_EventDone
 TR_eventHandlerHandleEvent(TR_EventHandler this, TR_Event event)
 {
 	TR_EventMethod_fptr event_func     = NULL;