91 lines
1.7 KiB
C++
91 lines
1.7 KiB
C++
//
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// Copyright 2013 Pixar
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//
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// Licensed under the terms set forth in the LICENSE.txt file available at
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// https://opensubdiv.org/license.
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//
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#ifndef STOPWATCH_H
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#define STOPWATCH_H
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#if (_WIN32)
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#include <windows.h>
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#else
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#endif
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class Stopwatch {
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public:
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#ifndef _WIN32
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Stopwatch() : _totalElapsed(0) { }
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void Start() {
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struct timeval l_rtime;
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gettimeofday(&l_rtime,0);
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_elapsed = (double)l_rtime.tv_sec + (double)l_rtime.tv_usec/1000000.0;
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}
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void Stop() {
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struct timeval l_rtime;
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gettimeofday(&l_rtime,0);
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_elapsed = ((double)l_rtime.tv_sec + (double)l_rtime.tv_usec/1000000.0)
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- _elapsed;
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_totalElapsed += _elapsed;
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}
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double GetElapsed() const {
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return _elapsed;
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}
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double GetTotalElapsed() const {
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return _totalElapsed;
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}
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#else
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Stopwatch() : _totalElapsed(0) {
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QueryPerformanceFrequency(&_frequency);
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}
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void Start()
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{
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QueryPerformanceCounter(&_time);
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}
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void Stop()
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{
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LARGE_INTEGER currentTime;
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QueryPerformanceCounter(¤tTime);
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_elapsed = currentTime.QuadPart - _time.QuadPart;
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_totalElapsed+=_elapsed;
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}
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double GetElapsed() const {
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return (double) _elapsed / _frequency.QuadPart;
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}
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double GetTotalElapsed() const {
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return (double) _totalElapsed / _frequency.QuadPart;
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}
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#endif
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private:
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#ifndef _WIN32
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double _elapsed;
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double _totalElapsed;
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#else
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LARGE_INTEGER _time;
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LARGE_INTEGER _frequency;
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__int64 _elapsed;
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__int64 _totalElapsed;
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#endif
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};
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#endif /* STOPWATCH_H */
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