89 lines
2.9 KiB
C++
89 lines
2.9 KiB
C++
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/****************************************************************************
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* VCGLib o o *
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* Visual and Computer Graphics Library o o *
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* _ O _ *
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* Copyright(C) 2004 \/)\/ *
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* Visual Computing Lab /\/| *
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* ISTI - Italian National Research Council | *
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* \ *
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* All rights reserved. *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it 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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* 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 (http://www.gnu.org/licenses/gpl.txt) *
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* for more details. *
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* *
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****************************************************************************/
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/****************************************************************************
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History
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$Log: not supported by cvs2svn $
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****************************************************************************/
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#include "stopwatch.h"
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StopWatch::StopWatch(): elapsed(0) {}
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#ifdef _WIN32
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void StopWatch::Start(void) {
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static int first = 1;
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if(first) {
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QueryPerformanceFrequency(&freq);
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first = 0;
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}
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QueryPerformanceCounter(&tstart);
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}
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void StopWatch::Stop() {
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QueryPerformanceCounter(&tend);
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elapsed += Diff();
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}
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double StopWatch::Diff() {
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return ((double)tend.QuadPart -
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(double)tstart.QuadPart)/
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((double)freq.QuadPart);
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}
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#else
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void StopWatch::Start() {
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gettimeofday(&tstart, &tz);
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}
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void StopWatch::Stop() {
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gettimeofday(&tend, &tz);
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elapsed += Diff();
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}
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double StopWatch::Diff() {
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double t1 = (double)tstart.tv_sec + (double)tstart.tv_usec/(1000*1000);
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double t2 = (double)tend.tv_sec + (double)tend.tv_usec/(1000*1000);
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return t2 - t1;
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}
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#endif
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void StopWatch::Reset() {
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elapsed = 0;
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}
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double StopWatch::Elapsed() {
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return elapsed;
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}
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int StopWatch::Usec() {
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#ifdef _WIN32
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return 0;
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#else
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struct timeval ttime;
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gettimeofday(&ttime, &tz);
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return ttime.tv_usec;
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#endif
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}
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