/***************************************************************************
 *   Copyright (C) 2005 by Jeff Ferr                                       *
 *   root@sat                                                              *
 *                                                                         *
 *   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; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program 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, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
#ifndef J_MUTEX_H
#define J_MUTEX_H

#include "jobject.h"

#include <string>

#ifdef _WIN32
#include <windows.h>
#else
#include <pthread.h>
#include <semaphore.h>
#endif

namespace jthread {

enum jmutex_type_t {
	JMT_FAST,
	JMT_RECURSIVE,
	JMT_ERROR_CHECK
};

enum jmutex_protocol_t {
	JMP_NONE,
	JMP_INHERIT,
	JMP_PROTECT
};

/**
* \brief Monitor.
*
* @author Jeff Ferr
*/
class Mutex : public virtual jcommon::Object{

	friend class Condition;
	friend class Event;

	private:
#ifdef _WIN32
		CRITICAL_SECTION _mutex;
#else
		/** \brief */
		pthread_mutex_t _mutex;
#endif
		/** \brief */
		jmutex_type_t _type;
		/** \brief */
		int _lock_count;

	public:
		/**
		 * \brief Construtor.
		 *
		 */
		Mutex(jmutex_type_t = JMT_ERROR_CHECK, jmutex_protocol_t protocol_ = JMP_NONE, bool block_in_death = false);

		/**
		 * \brief Destrutor virtual.
		 *
		 */
		virtual ~Mutex();

		/**
		 * \brief Verify if a section is locked.
		 *
		 */
		bool IsLocked();

		/**
		 * \brief Lock the critial section.
		 *
		 */
		void Lock();

		/**
		 * \brief Unlock the critical section.
		 *
		 */
		void Unlock();

		/**
		 * \brief Try lock the critical section.
		 *
		 */
		bool TryLock();

};

}

#endif