mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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107 lines
2.6 KiB
C++
107 lines
2.6 KiB
C++
//
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// Copyright 2013 Pixar
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//
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// Licensed under the Apache License, Version 2.0 (the "Apache License")
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// with the following modification; you may not use this file except in
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// compliance with the Apache License and the following modification to it:
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// Section 6. Trademarks. is deleted and replaced with:
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//
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// 6. Trademarks. This License does not grant permission to use the trade
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// names, trademarks, service marks, or product names of the Licensor
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// and its affiliates, except as required to comply with Section 4(c) of
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// the License and to reproduce the content of the NOTICE file.
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//
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// You may obtain a copy of the Apache License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the Apache License with the above modification is
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// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the Apache License for the specific
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// language governing permissions and limitations under the Apache 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 || _WIN64)
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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 _WINDOWS
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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 = l_rtime.tv_sec + 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 = (l_rtime.tv_sec + l_rtime.tv_usec/1000000.0) - _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 _WINDOWS
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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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