TCPlayerbotCore/src/shared/Timer.h

/*
 * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
 *
 * Copyright (C) 2008-2009 Trinity <http://www.trinitycore.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; 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 _TIMER_H
#define _TIMER_H

#include "Platform/Define.h"

#if (PLATFORM != PLATFORM_WINDOWS)
#   include <sys/time.h>
#endif

#if PLATFORM == PLATFORM_WINDOWS
inline uint32 getMSTime() { return GetTickCount(); }
#else
inline uint32 getMSTime()
{
    struct timeval tv;
    struct timezone tz;
    gettimeofday( &tv, &tz );
    return (tv.tv_sec * 1000) + (tv.tv_usec / 1000);
}
#endif

inline uint32 getMSTimeDiff(uint32 oldMSTime, uint32 newMSTime)
{
    // getMSTime() have limited data range and this is case when it overflow in this tick
    if (oldMSTime > newMSTime)
        return (0xFFFFFFFF - oldMSTime) + newMSTime;
    else
        return newMSTime - oldMSTime;
}

#endif