trilinos_tpetra_communication_pattern.h

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// ---------------------------------------------------------------------
//
// Copyright (C) 2018 - 2023 by the deal.II authors
//
// This file is part of the deal.II library.
//
// The deal.II library is free software; you can use it, 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.
// The full text of the license can be found in the file LICENSE.md at
// the top level directory of deal.II.
//
// ---------------------------------------------------------------------
 
#ifndef dealii_trilinos_tpetra_communication_pattern_h
#define dealii_trilinos_tpetra_communication_pattern_h
 
 
#include <deal.II/base/config.h>
 
#ifdef DEAL_II_TRILINOS_WITH_TPETRA
 
#  include <deal.II/base/communication_pattern_base.h>
 
#  include <Tpetra_Export.hpp>
#  include <Tpetra_Import.hpp>
 
#  include <memory>
 
DEAL_II_NAMESPACE_OPEN
 
namespace LinearAlgebra
{
  namespace TpetraWrappers
  {
    class CommunicationPattern : public Utilities::MPI::CommunicationPatternBase
    {
    public:
      CommunicationPattern(const IndexSet &vector_space_vector_index_set,
                           const IndexSet &read_write_vector_index_set,
                           const MPI_Comm  communicator);
 
      virtual void
      reinit(const IndexSet &vector_space_vector_index_set,
             const IndexSet &read_write_vector_index_set,
             const MPI_Comm  communicator) override;
 
      virtual MPI_Comm
      get_mpi_communicator() const override;
 
      const Tpetra::Import<int, types::signed_global_dof_index> &
      get_tpetra_import() const;
 
      const Tpetra::Export<int, types::signed_global_dof_index> &
      get_tpetra_export() const;
 
    private:
      std::shared_ptr<const MPI_Comm> comm;
 
      std::unique_ptr<Tpetra::Import<int, types::signed_global_dof_index>>
        tpetra_import;
 
      std::unique_ptr<Tpetra::Export<int, types::signed_global_dof_index>>
        tpetra_export;
    };
  } // end of namespace TpetraWrappers
} // end of namespace LinearAlgebra
 
DEAL_II_NAMESPACE_CLOSE
 
#endif
 
#endif