diff options
Diffstat (limited to 'Swiften/EventLoop/EventLoop.h')
-rw-r--r-- | Swiften/EventLoop/EventLoop.h | 41 |
1 files changed, 31 insertions, 10 deletions
diff --git a/Swiften/EventLoop/EventLoop.h b/Swiften/EventLoop/EventLoop.h index e64ff35..54e0fe7 100644 --- a/Swiften/EventLoop/EventLoop.h +++ b/Swiften/EventLoop/EventLoop.h @@ -1,44 +1,65 @@ /* - * Copyright (c) 2010 Isode Limited. + * Copyright (c) 2010-2015 Isode Limited. * All rights reserved. * See the COPYING file for more information. */ #pragma once +#include <list> + #include <boost/function.hpp> #include <boost/thread.hpp> -#include <list> -#include <deque> #include <Swiften/Base/API.h> #include <Swiften/EventLoop/Event.h> namespace Swift { class EventOwner; + /** + * The \ref EventLoop class provides the abstract interface for implementing event loops to use with Swiften. + * + * Events are added to the event queue using the \ref postEvent method and can be removed from the queue using + * the \ref removeEventsFromOwner method. + */ class SWIFTEN_API EventLoop { public: EventLoop(); virtual ~EventLoop(); + /** + * The \ref postEvent method allows events to be added to the event queue of the \ref EventLoop. + * An optional \ref EventOwner can be passed, allowing later removal of events that have not yet been + * executed using the \ref removeEventsFromOwner method. + */ void postEvent(boost::function<void ()> event, boost::shared_ptr<EventOwner> owner = boost::shared_ptr<EventOwner>()); + + /** + * The \ref removeEventsFromOwner method removes all events from the specified \ref owner from the + * event queue. + */ void removeEventsFromOwner(boost::shared_ptr<EventOwner> owner); protected: /** - * Reimplement this to call handleEvent(event) from the thread in which - * the event loop is residing. + * The \ref handleNextEvent method is called by an implementation of the abstract \ref EventLoop class + * at any point after the virtual \ref eventPosted method has been called. + * This method does not block, except for short-time synchronization. */ - virtual void post(const Event& event) = 0; + void handleNextEvent(); - void handleEvent(const Event& event); + /** + * The \ref eventPosted virtual method serves as notification for when events are still available in the queue. + * It is called after the first event is posted to an empty queue or after an event has been handled in + * \ref handleNextEvent and there are still remaining events in the queue. + */ + virtual void eventPosted() = 0; private: - boost::mutex eventsMutex_; unsigned int nextEventID_; std::list<Event> events_; - bool handlingEvents_; - std::deque<Event> eventsToHandle_; + boost::recursive_mutex eventsMutex_; + boost::recursive_mutex removeEventsMutex_; }; } |