barrier/src/lib/base/SimpleEventQueueBuffer.h

/*
 * synergy -- mouse and keyboard sharing utility
 * Copyright (C) 2012 Synergy Si Ltd.
 * Copyright (C) 2004 Chris Schoeneman
 * 
 * This package is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * found in the file COPYING that should have accompanied this file.
 * 
 * This package is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#pragma once

#include "base/IEventQueueBuffer.h"
#include "arch/IArchMultithread.h"
#include "common/stddeque.h"

//! In-memory event queue buffer
/*!
An event queue buffer provides a queue of events for an IEventQueue.
*/
class SimpleEventQueueBuffer : public IEventQueueBuffer {
public:
	SimpleEventQueueBuffer();	
	~SimpleEventQueueBuffer();

	// IEventQueueBuffer overrides
	void				init() { }
	virtual void		waitForEvent(double timeout);
	virtual Type		getEvent(Event& event, UInt32& dataID);
	virtual bool		addEvent(UInt32 dataID);
	virtual bool		isEmpty() const;
	virtual EventQueueTimer*
						newTimer(double duration, bool oneShot) const;
	virtual void		deleteTimer(EventQueueTimer*) const;

private:
	typedef std::deque<UInt32> EventDeque;

	ArchMutex			m_queueMutex;
	ArchCond			m_queueReadyCond;
	bool				m_queueReady;
	EventDeque			m_queue;
};

class EventQueueTimer
{
public:
	EventQueueTimer() { }
	virtual ~EventQueueTimer() { }
};