59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
/*
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* Copyright (C) Tamás Mészáros
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef INCLUDE_BENCHMARK_H_
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#define INCLUDE_BENCHMARK_H_
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#include <chrono>
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#include <ratio>
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/**
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* A class for doing benchmarks.
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*/
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class Benchmark {
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typedef std::chrono::high_resolution_clock Clock;
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typedef Clock::duration Duration;
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typedef Clock::time_point TimePoint;
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TimePoint t1, t2;
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Duration d;
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inline double to_sec(Duration d) {
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return d.count() * double(Duration::period::num) / Duration::period::den;
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}
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public:
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/**
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* Measure time from the moment of this call.
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*/
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void start() { t1 = Clock::now(); }
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/**
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* Measure time to the moment of this call.
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*/
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void stop() { t2 = Clock::now(); }
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/**
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* Get the time elapsed between a start() end a stop() call.
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* @return Returns the elapsed time in seconds.
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*/
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double getElapsedSec() { d = t2 - t1; return to_sec(d); }
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};
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#endif /* INCLUDE_BENCHMARK_H_ */
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