vtkExecutionTimer.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkAppendFilter.h
 
  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
 
     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.
 
=========================================================================*/
 
#ifndef vtkExecutionTimer_h
#define vtkExecutionTimer_h
 
#include "vtkFiltersCoreModule.h" // For export macro
#include "vtkObject.h"
 
class vtkAlgorithm;
class vtkCallbackCommand;
 
class VTKFILTERSCORE_EXPORT vtkExecutionTimer : public vtkObject
{
public:
  vtkTypeMacro(vtkExecutionTimer, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  static vtkExecutionTimer* New();
 
 
  void SetFilter(vtkAlgorithm* filter);
  vtkGetObjectMacro(Filter, vtkAlgorithm);
 
 
  vtkGetMacro(ElapsedCPUTime, double);
 
 
  vtkGetMacro(ElapsedWallClockTime, double);
 
protected:
  vtkExecutionTimer();
  ~vtkExecutionTimer() override;
 
  // This is the observer that will catch StartEvent and hand off to
  // EventRelay
  vtkCallbackCommand* Callback;
 
  // This is the filter that will be timed
  vtkAlgorithm* Filter;
 
  // These are where we keep track of the timestamps for start/end
  double CPUStartTime;
  double CPUEndTime;
 
  double WallClockStartTime;
  double WallClockEndTime;
 
  double ElapsedCPUTime;
  double ElapsedWallClockTime;
 
 
  void StartTimer();
  void StopTimer();
 
  virtual void TimerFinished();
 
  static void EventRelay(
    vtkObject* caller, unsigned long eventId, void* clientData, void* callData);
 
private:
  vtkExecutionTimer(const vtkExecutionTimer&) = delete;
  void operator=(const vtkExecutionTimer&) = delete;
};
 
#endif