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/*
* Copyright (C) Tamás Mészáros
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDE_BENCHMARK_H_
#define INCLUDE_BENCHMARK_H_
#include <chrono>
#include <ratio>
/**
* A class for doing benchmarks.
*/
class Benchmark {
typedef std::chrono::high_resolution_clock Clock;
typedef Clock::duration Duration;
typedef Clock::time_point TimePoint;
TimePoint t1, t2;
Duration d;
inline double to_sec(Duration d) {
return d.count() * double(Duration::period::num) / Duration::period::den;
}
public:
/**
* Measure time from the moment of this call.
*/
void start() { t1 = Clock::now(); }
/**
* Measure time to the moment of this call.
*/
void stop() { t2 = Clock::now(); }
/**
* Get the time elapsed between a start() end a stop() call.
* @return Returns the elapsed time in seconds.
*/
double getElapsedSec() { d = t2 - t1; return to_sec(d); }
};
#endif /* INCLUDE_BENCHMARK_H_ */
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