solution_transfer.h

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// ---------------------------------------------------------------------
//
// Copyright (C) 2009 - 2021 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_distributed_solution_transfer_h
#define dealii_distributed_solution_transfer_h
 
#include <deal.II/base/config.h>
 
#include <deal.II/distributed/tria.h>
 
#include <deal.II/dofs/dof_handler.h>
 
#include <vector>
 
 
DEAL_II_NAMESPACE_OPEN
 
namespace parallel
{
  namespace distributed
  {
    template <int dim,
              typename VectorType,
              typename DoFHandlerType = DoFHandler<dim>>
    class SolutionTransfer
    {
#ifndef DEAL_II_MSVC
      static_assert(dim == DoFHandlerType::dimension,
                    "The dimension explicitly provided as a template "
                    "argument, and the dimension of the DoFHandlerType "
                    "template argument must match.");
#endif
    public:
      SolutionTransfer(const DoFHandlerType &dof);
 
      ~SolutionTransfer() = default;
 
      void
      prepare_for_coarsening_and_refinement(
        const std::vector<const VectorType *> &all_in);
 
      void
      prepare_for_coarsening_and_refinement(const VectorType &in);
 
      void
      interpolate(std::vector<VectorType *> &all_out);
 
      void
      interpolate(VectorType &out);
 
      void
      prepare_for_serialization(const VectorType &in);
 
      void
      prepare_for_serialization(const std::vector<const VectorType *> &all_in);
 
      void
      deserialize(VectorType &in);
 
 
      void
      deserialize(std::vector<VectorType *> &all_in);
 
    private:
      SmartPointer<const DoFHandlerType,
                   SolutionTransfer<dim, VectorType, DoFHandlerType>>
        dof_handler;
 
      std::vector<const VectorType *> input_vectors;
 
      unsigned int handle;
 
      std::vector<char>
      pack_callback(
        const typename Triangulation<dim, DoFHandlerType::space_dimension>::
          cell_iterator &cell,
        const typename Triangulation<dim, DoFHandlerType::space_dimension>::
          CellStatus status);
 
      void
      unpack_callback(
        const typename Triangulation<dim, DoFHandlerType::space_dimension>::
          cell_iterator &cell,
        const typename Triangulation<dim, DoFHandlerType::space_dimension>::
          CellStatus status,
        const boost::iterator_range<std::vector<char>::const_iterator>
          &                        data_range,
        std::vector<VectorType *> &all_out);
 
 
      void
      register_data_attach();
    };
  } // namespace distributed
} // namespace parallel
 
namespace Legacy
{
  namespace parallel
  {
    namespace distributed
    {
      template <int dim,
                typename VectorType,
                typename DoFHandlerType = DoFHandler<dim>>
      using SolutionTransfer = ::parallel::distributed::
        SolutionTransfer<dim, VectorType, DoFHandlerType>;
    } // namespace distributed
  }   // namespace parallel
} // namespace Legacy
 
 
DEAL_II_NAMESPACE_CLOSE
 
#endif