/*
 * synergy -- mouse and keyboard sharing utility
 * Copyright (C) 2012-2016 Symless Ltd.
 * Copyright (C) 2002 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 LICENSE 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 "arch/IArchMultithread.h"
#include "common/stdlist.h"

#define WIN32_LEAN_AND_MEAN
#include <Windows.h>

#define ARCH_MULTITHREAD ArchMultithreadWindows

class ArchCondImpl {
public:
	enum { kSignal = 0, kBroadcast };

	HANDLE				m_events[2];
	mutable int			m_waitCount;
	ArchMutex			m_waitCountMutex;
};

class ArchMutexImpl {
public:
	CRITICAL_SECTION	m_mutex;
};

//! Win32 implementation of IArchMultithread
class ArchMultithreadWindows : public IArchMultithread {
public:
	ArchMultithreadWindows();
	virtual ~ArchMultithreadWindows();

	//! @name manipulators
	//@{

	void				setNetworkDataForCurrentThread(void*);

	//@}
	//! @name accessors
	//@{

	HANDLE				getCancelEventForCurrentThread();

	void*				getNetworkDataForThread(ArchThread);

	static ArchMultithreadWindows*	getInstance();

	//@}

	// IArchMultithread overrides
	virtual ArchCond	newCondVar();
	virtual void		closeCondVar(ArchCond);
	virtual void		signalCondVar(ArchCond);
	virtual void		broadcastCondVar(ArchCond);
	virtual bool		waitCondVar(ArchCond, ArchMutex, double timeout);
	virtual ArchMutex	newMutex();
	virtual void		closeMutex(ArchMutex);
	virtual void		lockMutex(ArchMutex);
	virtual void		unlockMutex(ArchMutex);
	virtual ArchThread	newThread(ThreadFunc, void*);
	virtual ArchThread	newCurrentThread();
	virtual ArchThread	copyThread(ArchThread);
	virtual void		closeThread(ArchThread);
	virtual void		cancelThread(ArchThread);
	virtual void		setPriorityOfThread(ArchThread, int n);
	virtual void		testCancelThread();
	virtual bool		wait(ArchThread, double timeout);
	virtual bool		isSameThread(ArchThread, ArchThread);
	virtual bool		isExitedThread(ArchThread);
	virtual void*		getResultOfThread(ArchThread);
	virtual ThreadID	getIDOfThread(ArchThread);
	virtual void		setSignalHandler(ESignal, SignalFunc, void*);
	virtual void		raiseSignal(ESignal);

private:
	ArchThreadImpl*	find(DWORD id);
	ArchThreadImpl*	findNoRef(DWORD id);
	ArchThreadImpl*	findNoRefOrCreate(DWORD id);
	void				insert(ArchThreadImpl* thread);
	void				erase(ArchThreadImpl* thread);

	void				refThread(ArchThreadImpl* rep);
	void				testCancelThreadImpl(ArchThreadImpl* rep);

	void				doThreadFunc(ArchThread thread);
	static unsigned int __stdcall	threadFunc(void* vrep);

private:
	typedef std::list<ArchThread> ThreadList;

	static ArchMultithreadWindows*	s_instance;

	ArchMutex			m_threadMutex;

	ThreadList			m_threadList;
	ArchThread			m_mainThread;

	SignalFunc			m_signalFunc[kNUM_SIGNALS];
	void*				m_signalUserData[kNUM_SIGNALS];
};