efl_message: add pending queue for filtering message.

Sometimes message is appended when message queue is walking.
In this case, newly added messages are not filtered.
So I add message pending queue for filtering message.

Reviewed-by: Cedric BAIL <cedric.bail@free.fr>
Differential Revision: https://phab.enlightenment.org/D10459

src/lib/ecore/ecore_private.h

@@ -147,6 +147,7 @@ struct _Efl_Loop_Data
    Eina_List           *thread_children;
 
    Eina_Inlist         *message_queue;
+   Eina_Inlist         *message_pending_queue;
    unsigned int         message_walking;
 
    unsigned int         throttle;

src/lib/ecore/efl_loop.c

@@ -621,6 +621,14 @@ _efl_loop_message_process(Eo *obj, Efl_Loop_Data *pd)
                }
              else free(msg);
           }
+
+        while (pd->message_pending_queue)
+          {
+             msg = (Message *)pd->message_pending_queue;
+             pd->message_pending_queue = eina_inlist_remove(pd->message_pending_queue,
+                                                            pd->message_pending_queue);
+             pd->message_queue = eina_inlist_append(pd->message_queue, EINA_INLIST_GET(msg));
+          }
      }
    return EINA_TRUE;
 }

src/lib/ecore/efl_loop_message_handler.c

@@ -54,8 +54,16 @@ _efl_loop_message_handler_message_send(Eo *obj, Efl_Loop_Message_Handler_Data *p
      {
         msg->handler = obj;
         msg->message = message;
+        if (pd->loop_data->message_walking > 0)
+          {
+             pd->loop_data->message_pending_queue = eina_inlist_append
+                (pd->loop_data->message_pending_queue, EINA_INLIST_GET(msg));
+          }
+        else
+          {
              pd->loop_data->message_queue = eina_inlist_append
                 (pd->loop_data->message_queue, EINA_INLIST_GET(msg));
+          }
         _efl_loop_message_send_info_set(message, EINA_INLIST_GET(msg),
                                        pd->loop, pd->loop_data);
         return;