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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2011-2022 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM 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 3 of the License, or
(at your option) any later version.
OpenFOAM 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 OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Class
Foam::cpuTime
Description
Starts timing CPU usage and return elapsed time from start.
Uses the POSIX clock() function which return the processor time consumed
in clock ticks @ CLOCKS_PER_SEC clock ticks per second.
See also
clockTime
SourceFiles
cpuTime.C
\*---------------------------------------------------------------------------*/
#ifndef cpuTime_H
#define cpuTime_H
#include <time.h>
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class cpuTime Declaration
\*---------------------------------------------------------------------------*/
class cpuTime
{
// Private Data
//- Start CPU clock tick count
clock_t startTime_;
//- Previous CPU clock tick count
mutable clock_t prevTime_;
//- Current CPU clock tick count
mutable clock_t curTime_;
// Private Member Functions
//- Return the difference between two times clock tick counts
// as elapsed CPU time (in seconds)
inline double timeDifference
(
const clock_t prev,
const clock_t cur
) const;
public:
// Constructors
//- Construct with the current clock time
cpuTime();
// Member Functions
//- Return CPU time (in seconds) from the start
double elapsedCpuTime() const;
//- Return CPU time (in seconds) since last call to cpuTimeIncrement()
double cpuTimeIncrement() const;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
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