kc3-lang/angle/util/linux/LinuxTimer.h

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• Author : Shahbaz Youssefi
  Date : 2018-10-22 11:53:51
  Hash : 479918de
  Message : Get absolute time from timers Independent of start()/stop()/getElapsedTime() functionality, getAbsoluteTime() is added to return the time regardless of whether the timer is running. Bug: angleproject:2908 Change-Id: I056aeb6eddfba8757a139934c1cf68e00e860de6 Reviewed-on: https://chromium-review.googlesource.com/c/1296952 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>

• util/linux/LinuxTimer.h

• //
  // Copyright (c) 2015 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.
  //
  
  // LinuxTimer.h: Definition of a high precision timer class on Linux
  
  #ifndef UTIL_LINUX_TIMER_H
  #define UTIL_LINUX_TIMER_H
  
  #include <stdint.h>
  #include <time.h>
  
  #include "Timer.h"
  
  class LinuxTimer : public Timer
  {
    public:
      LinuxTimer();
  
      void start() override;
      void stop() override;
      double getElapsedTime() const override;
  
      double getAbsoluteTime() override;
  
    private:
      bool mRunning;
      uint64_t mStartTimeNs;
      uint64_t mStopTimeNs;
  };
  
  #endif // UTIL_LINUX_TIMER_H