/*

 * Copyright (c) 2005 INRIA

 * All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation;

 *

 * 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

 *

 * Author: Mathieu Lacage <mathieu.lacage.inria.fr>

 */

#include "system-wall-clock-ms.h"

#include <sys/time.h>

namespace ns3 {

class SystemWallClockMsPrivate {

public:

    void start (void);

    unsigned long long end (void);

private:

    struct timeval m_startTv;

    struct timeval m_endTv;

};

void 

SystemWallClockMsPrivate::start (void)

{

    struct timezone tz;

    gettimeofday (&m_startTv, &tz);

}

unsigned long long 

SystemWallClockMsPrivate::end (void)

{

    struct timezone tz;

    gettimeofday (&m_endTv, &tz);

    unsigned long long end = m_endTv.tv_sec *1000 + m_endTv.tv_usec / 1000;

    unsigned long long start = m_startTv.tv_sec *1000 + m_startTv.tv_usec / 1000;

    return end - start;

}

SystemWallClockMs::SystemWallClockMs ()

    : m_priv (new SystemWallClockMsPrivate ())

{}

SystemWallClockMs::~SystemWallClockMs ()

{

    delete m_priv;

    m_priv = 0;

}

void

SystemWallClockMs::start (void)

{

    m_priv->start ();

}

unsigned long long

SystemWallClockMs::end (void)

{

    return m_priv->end ();

}

}; // namespace ns3