trilinos_epetra_communication_pattern.h

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// -----------------------------------------------------------------------------
//
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception OR LGPL-2.1-or-later
// Copyright (C) 2016 - 2026 by the deal.II authors
//
// This file is part of the deal.II library.
//
// Detailed license information governing the source code and contributions
// can be found in LICENSE.md and CONTRIBUTING.md at the top level directory.
//
// -----------------------------------------------------------------------------
 
#ifndef dealii_trilinos_epetra_communication_pattern_h
#define dealii_trilinos_epetra_communication_pattern_h
 
 
#include <deal.II/base/config.h>
 
#ifdef DEAL_II_TRILINOS_WITH_EPETRA
 
#  include <deal.II/base/communication_pattern_base.h>
 
DEAL_II_DISABLE_EXTRA_DIAGNOSTICS
#  include <Epetra_Import.h>
DEAL_II_ENABLE_EXTRA_DIAGNOSTICS
 
#  include <memory>
 
#endif
 
DEAL_II_NAMESPACE_OPEN
 
#ifdef DEAL_II_TRILINOS_WITH_EPETRA
namespace LinearAlgebra
{
  namespace EpetraWrappers
  {
    class DEAL_II_DEPRECATED_EARLY_WITH_COMMENT(
      "Transition to functionality provided in TrilinosWrappers or TpetraWrappers!")
      CommunicationPattern : public Utilities::MPI::CommunicationPatternBase
    {
    public:
      CommunicationPattern(const IndexSet &locally_owned_indices,
                           const IndexSet &ghost_indices,
                           const MPI_Comm  communicator);

      virtual void
      reinit(const IndexSet &locally_owned_indices,
             const IndexSet &ghost_indices,
             const MPI_Comm  communicator) override;

      virtual MPI_Comm
      get_mpi_communicator() const override;

      const Epetra_Import &
      get_epetra_import() const;
 
    private:
      std::shared_ptr<const MPI_Comm> comm;

      std::unique_ptr<Epetra_Import> importer;
    };
  } // end of namespace EpetraWrappers
} // end of namespace LinearAlgebra
 
#endif
 
DEAL_II_NAMESPACE_CLOSE
 
#endif