/***************************************************************************
 *   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_CONDITION_H
#define J_CONDITION_H

#include "jmutex.h"

#include <pthread.h>
#include <stdint.h>

namespace jthread {

/**
 * \brief Condition.
 *
 * @author Jeff Ferr
 */
class Condition{

    private:
        /** \brief Descritor */
        pthread_cond_t _condition;
        /** \brief Mutex */
        Mutex _monitor;
        /** \brief Mutex */
        uint16_t _count;
        /** \brief Mutex */
        uint16_t _nblock;

    public:
        /**
         * \brief Construtor.
         *
         */
        Condition(int nblock = 1);

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

        /**
         * \brief Lock semaphore.
         *
         */
        void Wait();
 
	/**
         * \brief Lock semaphore.
	 *
	 * \param time_ is an absolute time specification, zero is the beginning of 
	 * the epoch (00:00:00 GMT, January 1, 1970).
         *
         */
        void Wait(struct timespec time_);
        
        /**
         * \brief Notify the locked semaphore.
         *
         */
        void Notify();
        
        /**
         * \brief Notify all the locked semaphores.
         *
         */
        void NotifyAll();
    
};

};

#endif