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// ***********************************************************************
//
// EpetraExt: Epetra Extended - Linear Algebra Services Package
// Copyright (2001) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA
// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
//
// ***********************************************************************
//@HEADER
#ifndef EPETRAEXT_RESTRICTEDMULTIVECTORWRAPPER_H
#define EPETRAEXT_RESTRICTEDMULTIVECTORWRAPPER_H
#include <EpetraExt_ConfigDefs.h>
#include <Teuchos_RCP.hpp>
#include <mpi.h>
#ifdef HAVE_MPI
class Epetra_Comm;
class Epetra_MpiComm;
class Epetra_BlockMap;
class Epetra_MultiVector;
namespace EpetraExt {
class RestrictedMultiVectorWrapper{
public:
RestrictedMultiVectorWrapper();
~RestrictedMultiVectorWrapper();
//! Set the MPI communicator corresponding to the restricted multivector.
/*! Sets the MPISubComm if it hasn't been set already.
\param MPI_Comm (In) An MPI_Comm object representing the subcommunicator.
\return Returns 0 if the SubComm hasn't ready been set , -1 if it has */
int SetMPISubComm(MPI_Comm MPI_SubComm);
//! Get the MPI communicator corresponding to the restricted multivector.
MPI_Comm GetMPISubComm(){return MPI_SubComm_;}
//! Get the Epetra communicator corresponding to the restricted multivector.
const Epetra_MpiComm & RestrictedComm(){return *RestrictedComm_;}
//! Notes whether or not the proc is active for the restricted multivector.
bool RestrictedProcIsActive(){return proc_is_active;}
//! Returns the input multivector.
Teuchos::RCP<Epetra_MultiVector> InputMultiVector(){return input_mv_;}
//! Returns the input multivector, restricted to the active procs.
Teuchos::RCP<Epetra_MultiVector> RestrictedMultiVector(){return restricted_mv_;}
//! Restricts the multivector.
/*! Restricts the multivector. If the MPISubComm is not set, restrict sets it to
include only the active processors and then restricts the multivector. If
MPISubComm is set in a fashion compatible with the existing multivector (aka all
procs with active rows must be in the subcomm), it
creates a multivector using that MPISubComm
\return 0 if sucessful, -1 if the input_multivector is deficient, and -2 if the
MPI_Comm object set with SetMPISubComm is not consistent with the input multivector.
*/
int restrict_comm(Teuchos::RCP<Epetra_MultiVector> input_mv);
private:
bool proc_is_active;
bool subcomm_is_set;
MPI_Comm MPI_SubComm_;
Epetra_MpiComm *RestrictedComm_;
Epetra_BlockMap *ResMap_;
Teuchos::RCP<Epetra_MultiVector> input_mv_;
Teuchos::RCP<Epetra_MultiVector> restricted_mv_;
};
} // namespace EpetraExt
#endif
#endif /* EPETRAEXT_RESTRICTEDMULTIVECTORWRAPPER_H */
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