vtkThreadedStreamingPipeline.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkThreadedStreamingPipeline.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.

  =========================================================================*/
/*-------------------------------------------------------------------------
  Copyright (c) 2008, 2009 by SCI Institute, University of Utah.
  
  This is part of the Parallel Dataflow System originally developed by
  Huy T. Vo and Claudio T. Silva. For more information, see:

  "Parallel Dataflow Scheme for Streaming (Un)Structured Data" by Huy
  T. Vo, Daniel K. Osmari, Brian Summa, Joao L.D. Comba, Valerio
  Pascucci and Claudio T. Silva, SCI Institute, University of Utah,
  Technical Report #UUSCI-2009-004, 2009.

  "Multi-Threaded Streaming Pipeline For VTK" by Huy T. Vo and Claudio
  T. Silva, SCI Institute, University of Utah, Technical Report
  #UUSCI-2009-005, 2009.
  -------------------------------------------------------------------------*/
#ifndef __vtkThreadedStreamingPipeline_h
#define __vtkThreadedStreamingPipeline_h

#include "vtkCompositeDataPipeline.h"

class vtkComputingResources;
class vtkExecutionScheduler;
class vtkExecutiveCollection;

class VTK_FILTERING_EXPORT vtkThreadedStreamingPipeline : public vtkCompositeDataPipeline
{
public:
  static vtkThreadedStreamingPipeline* New();
  vtkTypeMacro(vtkThreadedStreamingPipeline,vtkCompositeDataPipeline);
  void PrintSelf(ostream &os, vtkIndent indent);

  static vtkInformationIntegerKey* AUTO_PROPAGATE();

  static vtkInformationObjectBaseKey* EXTRA_INFORMATION();

//BTX

  enum
  {
    PROCESSING_UNIT_NONE = 0,
    PROCESSING_UNIT_CPU = 1,
    PROCESSING_UNIT_GPU = 2
  };
//ETX

  static void SetMultiThreadedEnabled(bool enabled);

  static void SetAutoPropagatePush(bool enabled);

  static void Pull(vtkExecutiveCollection *execs);

  static void Pull(vtkExecutiveCollection *execs, vtkInformation *info);
  
  static void Push(vtkExecutiveCollection *execs);

  static void Push(vtkExecutiveCollection *execs, vtkInformation *info);
  
  static void Pull(vtkExecutive *exec);

  static void Pull(vtkExecutive *exec, vtkInformation *info);

  static void Push(vtkExecutive *exec);

  static void Push(vtkExecutive *exec, vtkInformation *info);

  void Pull();

  void Pull(vtkInformation *info);

  void Push();

  void Push(vtkInformation *info);
  
  void ReleaseInputs();


  virtual int ProcessRequest(vtkInformation* request,
                             vtkInformationVector** inInfo,
                             vtkInformationVector* outInfo);

  int ForceUpdateData(int processingUnit, vtkInformation *info);

  void UpdateRequestDataTimeFromSource();

  vtkComputingResources *GetResources();

  float                  LastDataRequestTime;
  float                  LastDataRequestTimeFromSource;
  vtkInformation        *ForceDataRequest;
  vtkComputingResources *Resources;
  vtkExecutionScheduler *Scheduler;
  
protected:
  vtkThreadedStreamingPipeline();
  ~vtkThreadedStreamingPipeline();

  virtual int ForwardUpstream(vtkInformation* request);
  virtual int ForwardUpstream(int i, int j, vtkInformation* request);
  
private:
  vtkThreadedStreamingPipeline(const vtkThreadedStreamingPipeline&);  // Not implemented.
  void operator=(const vtkThreadedStreamingPipeline&);  // Not implemented.
};

#endif