Hash :
e9f9fa17
        
        Author :
  
        
        Date :
2021-11-09T18:13:15
        
      
Add cpu time measurement to perf tests Bug: angleproject:6667 Change-Id: I16570a7b51d363dd1c0f35789b985520cb76d488 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3270601 Commit-Queue: Lingfeng Yang <lfy@google.com> Reviewed-by: Tim Van Patten <timvp@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Charlie Lao <cclao@google.com>
//
// Copyright 2019 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
#ifndef SAMPLE_UTIL_TIMER_H
#define SAMPLE_UTIL_TIMER_H
class Timer final
{
  public:
    Timer();
    ~Timer() {}
    // Use start() and stop() to record the duration and use getElapsedWallClockTime() to query that
    // duration.  If getElapsedWallClockTime() is called in between, it will report the elapsed time
    // since start().
    void start();
    void stop();
    double getElapsedWallClockTime() const;
    double getElapsedCpuTime() const;
  private:
    bool mRunning;
    double mStartTime;
    double mStopTime;
    double mStartCpuTime;
    double mStopCpuTime;
};
#endif  // SAMPLE_UTIL_TIMER_H