source: downloads/OgreMain/include/WIN32/OgreTimerImp.h @ 3

/*
-----------------------------------------------------------------------------
This source file is part of OGRE
    (Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2006 Torus Knot Software Ltd
Also see acknowledgements in Readme.html

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser 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, or go to
http://www.gnu.org/copyleft/lesser.txt.

You may alternatively use this source under the terms of a specific version of
the OGRE Unrestricted License provided you have obtained such a license from
Torus Knot Software Ltd.
-----------------------------------------------------------------------------
*/
#ifndef __Win32Timer_H__
#define __Win32Timer_H__

#ifndef WIN32_LEAN_AND_MEAN
#  define WIN32_LEAN_AND_MEAN
#endif
#include "windows.h"

//Get around Windows hackery
#ifdef max
#  undef max
#endif
#ifdef min
#  undef min
#endif

#define FREQUENCY_RESAMPLE_RATE 200

namespace Ogre
{
    class _OgreExport Timer
    {
    private:
                clock_t zeroClock;

        DWORD mStartTick;
                LONGLONG mLastTime;
        LARGE_INTEGER mStartTime;
        LARGE_INTEGER mFrequency;

        DWORD mProcMask;
        DWORD mSysMask;

        HANDLE mThread;

        DWORD mQueryCount;
    public:
                Timer();
                ~Timer();

                /** Resets timer */
                void reset();

                /** Returns milliseconds since initialisation or last reset */
                unsigned long getMilliseconds();

                /** Returns microseconds since initialisation or last reset */
                unsigned long getMicroseconds();

                /** Returns milliseconds since initialisation or last reset, only CPU time measured */  
                unsigned long getMillisecondsCPU();

                /** Returns microseconds since initialisation or last reset, only CPU time measured */  
                unsigned long getMicrosecondsCPU();
    };
} 
#endif