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First draft created.

This commit is contained in:
Federico Ponchio 2004-07-01 21:38:30 +00:00
parent a7ec9a7103
commit 619d151342
2 changed files with 139 additions and 0 deletions
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88
apps/nexus/stopwatch.cpp Normal file
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/****************************************************************************
* VCGLib o o *
* Visual and Computer Graphics Library o o *
* _ O _ *
* Copyright(C) 2004 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
* All rights reserved. *
* *
* 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 (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
/****************************************************************************
History
$Log: not supported by cvs2svn $
****************************************************************************/
#include "stopwatch.h"
StopWatch::StopWatch(): elapsed(0) {}
#ifdef _WIN32
void StopWatch::Start(void) {
static int first = 1;
if(first) {
QueryPerformanceFrequency(&freq);
first = 0;
}
QueryPerformanceCounter(&tstart);
}
void StopWatch::Stop() {
QueryPerformanceCounter(&tend);
elapsed += Diff();
}
double StopWatch::Diff() {
return ((double)tend.QuadPart -
(double)tstart.QuadPart)/
((double)freq.QuadPart);
}
#else
void StopWatch::Start() {
gettimeofday(&tstart, &tz);
}
void StopWatch::Stop() {
gettimeofday(&tend, &tz);
elapsed += Diff();
}
double StopWatch::Diff() {
double t1 = (double)tstart.tv_sec + (double)tstart.tv_usec/(1000*1000);
double t2 = (double)tend.tv_sec + (double)tend.tv_usec/(1000*1000);
return t2 - t1;
}
#endif
void StopWatch::Reset() {
elapsed = 0;
}
double StopWatch::Elapsed() {
return elapsed;
}
int StopWatch::Usec() {
#ifdef _WIN32
return 0;
#else
struct timeval ttime;
gettimeofday(&ttime, &tz);
return ttime.tv_usec;
#endif
}

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apps/nexus/stopwatch.h Normal file
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/****************************************************************************
* VCGLib o o *
* Visual and Computer Graphics Library o o *
* _ O _ *
* Copyright(C) 2004 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
* All rights reserved. *
* *
* 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 (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
/****************************************************************************
History
$Log: not supported by cvs2svn $
****************************************************************************/
#include <sys/time.h>
#include <unistd.h>
class StopWatch {
public:
StopWatch();
void Start();
void Stop();
void Reset();
double Elapsed();
int Usec();
private:
double Diff();
#ifdef _WIN32
static LARGE_INTEGER _tstart, _tend;
static LARGE_INTEGER freq;
#else
struct timeval tstart, tend;
struct timezone tz;
#endif
double elapsed;
};