mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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138 lines
4.7 KiB
C++
138 lines
4.7 KiB
C++
//
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// Copyright (C) Pixar. All rights reserved.
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//
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// This license governs use of the accompanying software. If you
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// use the software, you accept this license. If you do not accept
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// the license, do not use the software.
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//
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// 1. Definitions
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// The terms "reproduce," "reproduction," "derivative works," and
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// "distribution" have the same meaning here as under U.S.
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// copyright law. A "contribution" is the original software, or
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// any additions or changes to the software.
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// A "contributor" is any person or entity that distributes its
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// contribution under this license.
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// "Licensed patents" are a contributor's patent claims that read
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// directly on its contribution.
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//
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// 2. Grant of Rights
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// (A) Copyright Grant- Subject to the terms of this license,
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// including the license conditions and limitations in section 3,
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// each contributor grants you a non-exclusive, worldwide,
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// royalty-free copyright license to reproduce its contribution,
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// prepare derivative works of its contribution, and distribute
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// its contribution or any derivative works that you create.
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// (B) Patent Grant- Subject to the terms of this license,
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// including the license conditions and limitations in section 3,
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// each contributor grants you a non-exclusive, worldwide,
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// royalty-free license under its licensed patents to make, have
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// made, use, sell, offer for sale, import, and/or otherwise
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// dispose of its contribution in the software or derivative works
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// of the contribution in the software.
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//
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// 3. Conditions and Limitations
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// (A) No Trademark License- This license does not grant you
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// rights to use any contributor's name, logo, or trademarks.
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// (B) If you bring a patent claim against any contributor over
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// patents that you claim are infringed by the software, your
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// patent license from such contributor to the software ends
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// automatically.
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// (C) If you distribute any portion of the software, you must
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// retain all copyright, patent, trademark, and attribution
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// notices that are present in the software.
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// (D) If you distribute any portion of the software in source
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// code form, you may do so only under this license by including a
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// complete copy of this license with your distribution. If you
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// distribute any portion of the software in compiled or object
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// code form, you may only do so under a license that complies
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// with this license.
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// (E) The software is licensed "as-is." You bear the risk of
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// using it. The contributors give no express warranties,
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// guarantees or conditions. You may have additional consumer
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// rights under your local laws which this license cannot change.
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// To the extent permitted under your local laws, the contributors
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// exclude the implied warranties of merchantability, fitness for
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// a particular purpose and non-infringement.
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//
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#ifndef STOPWATCH_H
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#define STOPWATCH_H
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#if not (_WIN32 or _WIN64)
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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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#else
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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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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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void Start()
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{
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__int64 CreationTime, ExitTime, KernelTime, UserTime;
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GetProcessTimes(GetCurrentProcess(), (FILETIME*) &CreationTime, (FILETIME*) &ExitTime,
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(FILETIME*) &KernelTime, (FILETIME*) &UserTime);
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GetSystemTimeAsFileTime((FILETIME*) &_elapsed);
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}
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void Stop()
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{
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__int64 CreationTime, ExitTime, KernelTime, UserTime, CurrentTime;
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GetProcessTimes(GetCurrentProcess(), (FILETIME*) &CreationTime, (FILETIME*) &ExitTime,
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(FILETIME*) &KernelTime, (FILETIME*) &UserTime);
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GetSystemTimeAsFileTime((FILETIME*) &CurrentTime);
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_elapsed = CurrentTime - _elapsed;
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_totalElapsed += _elapsed;
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}
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double GetElapsed() const {
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return _elapsed / (1000 * 1000 * 10);
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}
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double GetTotalElapsed() const {
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return _totalElapsed / (1000 * 1000 * 10);
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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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__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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