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/*=========================================================================
Program: Visualization Toolkit
Module: vtkProgressObserver.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.
=========================================================================*/
/**
* @class vtkProgressObserver
* @brief Basic class to optionally replace vtkAlgorithm progress functionality.
*
* When the basic functionality in vtkAlgorithm that reports progress is
* not enough, a subclass of vtkProgressObserver can be used to provide
* custom functionality.
* The main use case for this is when an algorithm's RequestData() is
* called from multiple threads in parallel - the basic functionality in
* vtkAlgorithm is not thread safe. vtkSMPProgressObserver can
* handle this situation by routing progress from each thread to a
* thread local vtkProgressObserver, which will invoke events separately
* for each thread.
*/
#ifndef vtkProgressObserver_h
#define vtkProgressObserver_h
#include "vtkCommonExecutionModelModule.h" // For export macro
#include "vtkObject.h"
class VTKCOMMONEXECUTIONMODEL_EXPORT vtkProgressObserver : public vtkObject
{
public:
static vtkProgressObserver *New();
vtkTypeMacro(vtkProgressObserver,vtkObject);
void PrintSelf(ostream& os, vtkIndent indent) VTK_OVERRIDE;
/**
* The default behavior is to update the Progress data member
* and invoke a ProgressEvent. This is designed to be overwritten.
*/
virtual void UpdateProgress(double amount);
//@{
/**
* Returns the progress reported by the algorithm.
*/
vtkGetMacro(Progress, double);
//@}
protected:
vtkProgressObserver();
~vtkProgressObserver() VTK_OVERRIDE;
double Progress;
private:
vtkProgressObserver(const vtkProgressObserver&) VTK_DELETE_FUNCTION;
void operator=(const vtkProgressObserver&) VTK_DELETE_FUNCTION;
};
#endif
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