kc3-lang/angle/util/Timer.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/Timer.h

• //
  // Copyright (c) 2014 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
  
  #include <export.h>
  
  class ANGLE_EXPORT Timer
  {
    public:
      virtual ~Timer() {}
  
      // Timer functionality: Use start() and stop() to record the duration and use getElapsedTime()
      // to query that duration.  If getElapsedTime() is called in between, it will report the elapsed
      // time since start().
      virtual void start() = 0;
      virtual void stop() = 0;
      virtual double getElapsedTime() const = 0;
  
      // Timestamp functionality: Use getAbsoluteTime() to get an absolute time with an unknown
      // origin. This time moves forward regardless of start()/stop().
      virtual double getAbsoluteTime() = 0;
  };
  
  ANGLE_EXPORT Timer *CreateTimer();
  
  #endif // SAMPLE_UTIL_TIMER_H