solution_transfer.h

// ---------------------------------------------------------------------
//
// Copyright (C) 2009 - 2018 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 at
// the top level of the deal.II distribution.
//
// ---------------------------------------------------------------------

#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);


      unsigned int get_data_size() const;


      void prepare_serialization(const VectorType &in);


      void prepare_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 offset;

      void pack_callback(const typename Triangulation<dim,DoFHandlerType::space_dimension>::cell_iterator &cell,
                         const typename Triangulation<dim,DoFHandlerType::space_dimension>::CellStatus status,
                         void *data);

      void unpack_callback(const typename Triangulation<dim,DoFHandlerType::space_dimension>::cell_iterator &cell,
                           const typename Triangulation<dim,DoFHandlerType::space_dimension>::CellStatus status,
                           const void *data,
                           std::vector<VectorType *> &all_out);


      void register_data_attach(const std::size_t size);

    };


  }
}



DEAL_II_NAMESPACE_CLOSE

#endif