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/*=========================================================================
Program: Visualization Toolkit
Module: vtkPPainterCommunicator.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.
=========================================================================*/
// .NAME vtkPainterCommunicator -- A communicator containing only
// ranks that will execute a painter chain.
//
// .SECTION Description
// A communicator that can safely be used inside a painter.
// A simple container holding an MPI communicator. The simple API
// is sufficient to allow serial code (no MPI available) to steer
// execution.
#ifndef vtkPPainterCommunicator_h
#define vtkPPainterCommunicator_h
#include "vtkPainterCommunicator.h"
#include "vtkRenderingParallelLICModule.h" // for export macro
class vtkPPainterCommunicatorInternals;
class vtkMPICommunicatorOpaqueComm;
class VTKRENDERINGPARALLELLIC_EXPORT vtkPPainterCommunicator : public vtkPainterCommunicator
{
public:
vtkPPainterCommunicator();
virtual ~vtkPPainterCommunicator();
// Description:
// Copier and assignment operators.
vtkPPainterCommunicator(const vtkPPainterCommunicator &other) : vtkPainterCommunicator(other)
{ this->Copy(&other, false); }
vtkPPainterCommunicator &operator=(const vtkPPainterCommunicator &other)
{ this->Copy(&other, false); return *this; }
// Description:
// Copy the communicator.
virtual void Copy(const vtkPainterCommunicator *other, bool ownership);
// Description:
// Duplicate the communicator.
virtual void Duplicate(const vtkPainterCommunicator *other);
// Description:
// Querry MPI for inforrmation about the communicator.
virtual int GetRank();
virtual int GetSize();
virtual bool GetIsNull();
// Description:
// Querry MPI for information a bout the world communicator.
virtual int GetWorldRank();
virtual int GetWorldSize();
// Description:
// Querry MPI state.
virtual bool GetMPIInitialized(){ return this->MPIInitialized(); }
virtual bool GetMPIFinalized(){ return this->MPIFinalized(); }
static bool MPIInitialized();
static bool MPIFinalized();
// Description:
// Set/Get the communicator. Ownership is not assumed
// thus caller must keep the commuicator alive while
// this class is in use and free the communicator when
// finished.
void SetCommunicator(vtkMPICommunicatorOpaqueComm *comm);
void GetCommunicator(vtkMPICommunicatorOpaqueComm *comm);
void *GetCommunicator();
// Description:
// Creates a new communicator with/without the calling processes
// as indicated by the passed in flag, if not 0 the calling process
// is included in the new communicator. The new communicator is
// accessed via GetCommunicator. In parallel this call is mpi
// collective on the world communicator. In serial this is a no-op.
void SubsetCommunicator(vtkMPICommunicatorOpaqueComm *comm, int include);
// Description:
// Get VTK's world communicator. Return's a null communictor if
// MPI was not yet initialized.
static vtkMPICommunicatorOpaqueComm *GetGlobalCommunicator();
private:
// PImpl for MPI datatypes
vtkPPainterCommunicatorInternals *Internals;
};
#endif
// VTK-HeaderTest-Exclude: vtkPPainterCommunicator.h
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