56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
// -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; tab-width: 8 -*-
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//
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// Timer.h: Rcpp R/C++ interface class library -- simple timer class
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//
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// Copyright (C) 2010 Dirk Eddelbuettel and Romain Francois
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//
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// This file is part of Rcpp.
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//
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// Rcpp is free software: you can redistribute it and/or modify it
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// under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 2 of the License, or
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// (at your option) any later version.
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//
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// Rcpp is distributed in the hope that it will be useful, but
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// 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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//
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// You should have received a copy of the GNU General Public License
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// along with Rcpp. If not, see <http://www.gnu.org/licenses/>.
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// Simple timer class based on on ideas in atimer.h / atimer.cxx found a few years ago at
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// http://www.cs.uiowa.edu/~sriram/30/fall03/
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// and attributed to Amir Elaguizy while under GPL
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// but converted to using gettimeofday/GetSystemTime instead
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#ifndef TIMER_H
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#define TIMER_H
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class Timer {
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public:
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Timer() : sys_time("Sys.time") { Reset(); }
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void Start() { start_t = getFractionalSeconds() ; }
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void Stop() {
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end_t = getFractionalSeconds();
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elapsed = end_t - start_t; // Calculate elapsed time in seconds
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cumul += elapsed;
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}
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void Reset() { end_t = start_t = elapsed = cumul = 0.0; }
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double ElapsedTime() { return elapsed; }
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double CumulativeTime() { return cumul; }
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private:
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Function sys_time ;
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double start_t, end_t, elapsed, cumul;
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double getFractionalSeconds(void) {
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return as<double>( sys_time() ) ;
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}
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};
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#endif
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