communication_pattern_base.h

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// ---------------------------------------------------------------------
//
// Copyright (C) 2015 - 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_base_communication_pattern_base_h
#define dealii_base_communication_pattern_base_h
 
#include <deal.II/base/config.h>
 
#include <deal.II/base/mpi_stub.h>
 
DEAL_II_NAMESPACE_OPEN
 
// Forward declaration
#ifndef DOXYGEN
class IndexSet;
#endif
 
namespace Utilities
{
  namespace MPI
  {
    class CommunicationPatternBase
    {
    public:
      virtual ~CommunicationPatternBase() = default;
 
      virtual void
      reinit(const IndexSet &locally_owned_indices,
             const IndexSet &ghost_indices,
             const MPI_Comm  communicator) = 0;
 
      virtual MPI_Comm
      get_mpi_communicator() const = 0;
    };
 
  } // namespace MPI
 
} // namespace Utilities
 
DEAL_II_NAMESPACE_CLOSE
 
#endif