Utilities/Timer.cpp

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/************************************************************************************
    Copyright (C) 2005-2008 Assefaw H. Gebremedhin, Arijit Tarafdar, Duc Nguyen,
    Alex Pothen

    This file is part of ColPack.

    ColPack 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 3 of the License, or
    (at your option) any later version.

    ColPack 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 ColPack.  If not, see <http://www.gnu.org/licenses/>.
************************************************************************************/

//using namespace std;

#include "Definitions.h"

#include "Timer.h"

namespace ColPack
{
        //Public Constructor 4351
        Timer::Timer()
        {

        }

        
        //Public Destructor 4352
        Timer::~Timer()
        {

        }

        
        //Public Function 4354
        void Timer::Start()
        {

#ifdef SYSTEM_TIME

                ct_BeginTimer = times(&tms_BeginTimer);

#else

                ct_BeginTimer = clock();

#endif

        }
         
        //Public Function 4355
        void Timer::Stop()
        {

#ifdef SYSTEM_TIME

                ct_EndTimer = times(&tms_EndTimer);

#else

                ct_EndTimer = clock();

#endif

        }
         
        //Public Function 4356
        double Timer::GetWallTime()
        {

#ifdef SYSTEM_TIME

                return (double)(ct_EndTimer - ct_BeginTimer) / CLK_TCK;

#else

                return (double)(ct_EndTimer - ct_BeginTimer) / CLOCKS_PER_SEC;

#endif

        }
         
        //Public Function 4357
        double Timer::GetProcessorTime()
        {

#ifdef SYSTEM_TIME

                double t_UserTime = (double) (tms_EndTimer.tms_utime - tms_BeginTimer.tms_utime) / CLK_TCK;
                double t_SystemTime = (double) (tms_EndTimer.tms_stime - tms_BeginTimer.tms_stime) / CLK_TCK;

                return(t_UserTime + t_SystemTime);

#else

                return(_UNKNOWN);

#endif

        }
         
        //Public Function 4358
        double Timer::GetUserProcessorTime()
        {

#ifdef SYSTEM_TIME

                double t_UserTime = (double)(tms_EndTimer.tms_utime - tms_BeginTimer.tms_utime) / CLK_TCK;

                return(t_UserTime);

#else

                return(_UNKNOWN);

#endif

        }
         
        //Public Function 4359
        double Timer::GetSystemProcessorTime()
        {

#ifdef SYSTEM_TIME

                double t_SystemTime = (double)(tms_EndTimer.tms_stime - tms_BeginTimer.tms_stime) / CLK_TCK;

                return(t_SystemTime);

#else

                return(_UNKNOWN);

#endif

        }
}