mlTimer.h

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/*************************************************************************************
**
** Copyright 2010, MeVis Medical Solutions AG
**
** The user may use this file in accordance with the license agreement provided with
** the Software or, alternatively, in accordance with the terms contained in a
** written agreement between the user and MeVis Medical Solutions AG.
**
** For further information use the contact form at https://www.mevislab.de/contact
**
**************************************************************************************/
 
// A timer implementation that is thread aware.
 
#ifndef ML_TIMER_H
#define ML_TIMER_H
 
#include "mlProfilingManagerDllExport.h"
 
 
class MLTimeProfile;
 
class MLPROFILINGMANAGER_EXPORT MLTimer
{
public:
  MLTimer() noexcept = default;
  ~MLTimer() noexcept;
 
  MLTimer(const MLTimer&) = delete;
  MLTimer& operator=(const MLTimer&) = delete;
 
  MLTimer(MLTimer&&) noexcept = default;
  MLTimer& operator=(MLTimer&&) noexcept = default;
 
  void start();
  void stop();
 
  void start(MLTimer& otherToPause);
 
  void stop(MLTimer& otherToResume);
 
  double elapsed() const { return _elapsed; }
 
  double consumed() const { return _elapsed - _pausedElapsed; }
  unsigned int startCount() const { return _startCount; }
 
private:
  double       _startTime {0};
  double       _pausedStartTime {0};
  double       _pausedElapsed {0};
  double       _elapsed {0};
  bool         _isActive {false};
  bool         _isPaused {false};
  unsigned int _startCount {0};
 
  friend class MLTimeProfile;
  friend class MLCallGraphNode;
};
 
 
#endif