Support pumping non-delayed events in async::event_loop

libs/async/include/psemek/async/event_loop.hpp

@@ -28,6 +28,9 @@ namespace psemek::async
 
 		~event_loop() override { stop(); }
 
+		// wait all non-delayed events
+		void pump();
+
 	private:
 		util::synchronized_queue<task> queue_;
 	};

libs/async/source/event_loop.cpp

@@ -49,4 +49,14 @@ namespace psemek::async
 		return queue_.size();
 	}
 
+	void event_loop::pump()
+	{
+		while (true)
+		{
+			auto t = queue_.try_pop();
+			if (!t) break;
+			(*t)();
+		}
+	}
+
 }