---

Parallel/vtkMPIController.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkMPIController.h,v $
  Language:  C++

  Copyright (c) 1993-2002 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 __vtkMPIController_h
#define __vtkMPIController_h

#include "vtkMultiProcessController.h"
// Do not remove this header file. This class contains methods
// which take arguments defined in  vtkMPICommunicator.h by
// reference.
#include "vtkMPICommunicator.h" // Needed for direct access to communicator

class VTK_PARALLEL_EXPORT vtkMPIController : public vtkMultiProcessController
{

public:

  static vtkMPIController *New();
  vtkTypeRevisionMacro(vtkMPIController,vtkMultiProcessController);
  void PrintSelf(ostream& os, vtkIndent indent);


  virtual void Initialize(int* argc, char*** argv) 
    { this->Initialize(argc, argv, 0); }

  virtual void Initialize(int* vtkNotUsed(argc), char*** vtkNotUsed(argv),
                          int initializedExternally);

  virtual void Finalize() { this->Finalize(0); }

  virtual void Finalize(int finalizedExternally);

  virtual void SingleMethodExecute();
  
  virtual void MultipleMethodExecute();

  void Barrier();

  virtual void CreateOutputWindow();

  static char* ErrorString(int err);


  void SetCommunicator(vtkMPICommunicator* comm);

//BTX


  int NoBlockSend(int* data, int length, int remoteProcessId, int tag,
                  vtkMPICommunicator::Request& req)
    { return ((vtkMPICommunicator*)this->Communicator)->NoBlockSend
        (data ,length, remoteProcessId, tag, req); }
  int NoBlockSend(unsigned long* data, int length, int remoteProcessId,
                  int tag, vtkMPICommunicator::Request& req)
    { return ((vtkMPICommunicator*)this->Communicator)->NoBlockSend
        (data, length, remoteProcessId, tag, req); }
  int NoBlockSend(char* data, int length, int remoteProcessId, 
                  int tag, vtkMPICommunicator::Request& req)
    { return ((vtkMPICommunicator*)this->Communicator)->NoBlockSend
        (data, length, remoteProcessId, tag, req); }
  int NoBlockSend(float* data, int length, int remoteProcessId, 
                  int tag, vtkMPICommunicator::Request& req)
    { return ((vtkMPICommunicator*)this->Communicator)->NoBlockSend
        (data, length, remoteProcessId, tag, req); }


  int NoBlockReceive(int* data, int length, int remoteProcessId, 
                     int tag, vtkMPICommunicator::Request& req)
    { return ((vtkMPICommunicator*)this->Communicator)->NoBlockReceive
        (data, length, remoteProcessId, tag, req); }
  int NoBlockReceive(unsigned long* data, int length, 
                     int remoteProcessId, int tag, 
                     vtkMPICommunicator::Request& req)
    { return ((vtkMPICommunicator*)this->Communicator)->NoBlockReceive
        (data, length, remoteProcessId, tag, req); }
  int NoBlockReceive(char* data, int length, int remoteProcessId, 
                     int tag, vtkMPICommunicator::Request& req)
    { return ((vtkMPICommunicator*)this->Communicator)->NoBlockReceive
        (data, length, remoteProcessId, tag, req); }
  int NoBlockReceive(float* data, int length, int remoteProcessId, 
                     int tag, vtkMPICommunicator::Request& req)
    { return ((vtkMPICommunicator*)this->Communicator)->NoBlockReceive
        (data, length, remoteProcessId, tag, req); }

//ETX

  static const char* GetProcessorName();

protected:
  vtkMPIController();
  ~vtkMPIController();

  // Given a communicator, obtain size and rank
  // setting NumberOfProcesses and LocalProcessId
  // Should not be called if the current communicator
  // does not include this process
  int InitializeNumberOfProcesses();

  // Set the communicator to comm and call InitializeNumberOfProcesses()
  void InitializeCommunicator(vtkMPICommunicator* comm);

  // Duplicate the current communicator, creating RMICommunicator
  void InitializeRMICommunicator();

  // MPI communicator created when Initialize() called.
  // This is a copy of MPI_COMM_WORLD but uses a new
  // context, i.e. even if the tags are the same, the
  // RMI messages will not interfere with user level
  // messages.
  static vtkMPICommunicator* WorldRMICommunicator;

  // Initialize only once.
  static int Initialized;

  static char ProcessorName[];

private:
  vtkMPIController(const vtkMPIController&);  // Not implemented.
  void operator=(const vtkMPIController&);  // Not implemented.
};


#endif

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