/*	EQEMu: Everquest Server Emulator
	Copyright (C) 2001-2002 EQEMu Development Team (http://eqemu.org)

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; version 2 of the License.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY except by those people which sell it, which
	are required to give you total support for your newly bought product;
	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, write to the Free Software
	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef MYMUTEX_H
#define MYMUTEX_H
#ifdef _WINDOWS
	#include <winsock2.h>
	#include <windows.h>
#else
	#include <pthread.h>
	#include "../common/unix.h"
#endif
#include "../common/types.h"

class Mutex {
public:
	Mutex();
	~Mutex();

	void lock();
	void unlock();
	bool trylock();
protected:
private:
#if defined WIN32 || defined WIN64
	CRITICAL_SECTION CSMutex;
#else
	pthread_mutex_t CSMutex;
#endif
};

class LockMutex {
public:
	LockMutex(Mutex* in_mut, bool iLock = true);
	~LockMutex();
	void unlock();
	void lock();
private:
	bool	locked;
	Mutex*	mut;
};


// Somewhat untested...
// Multi-read, single write mutex -Quagmire
class MRMutex {
public:
	MRMutex();
	~MRMutex();

	void	ReadLock();
	bool	TryReadLock();
	void	UnReadLock();

	void	WriteLock();
	bool	TryWriteLock();
	void	UnWriteLock();

	int32	ReadLockCount();
	int32	WriteLockCount();
private:
	int32	rl;	// read locks in effect
	int32	wr;	// write lock requests pending
	int32	wl;	// write locks in effect (should never be more than 1)
	Mutex	MCounters;
};

#endif

