dof_levels.h

// ---------------------------------------------------------------------
//
// Copyright (C) 1998 - 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.md at
// the top level directory of deal.II.
//
// ---------------------------------------------------------------------

#ifndef dealii_dof_levels_h
#define dealii_dof_levels_h


#include <deal.II/base/config.h>

#include <deal.II/base/exceptions.h>
#include <deal.II/base/memory_consumption.h>

#include <deal.II/dofs/dof_objects.h>

#include <vector>


DEAL_II_NAMESPACE_OPEN


namespace internal
{
  namespace DoFHandlerImplementation
  {
    template <int dim>
    class DoFLevel
    {
    public:
      std::vector<types::global_dof_index> cell_dof_indices_cache;

      DoFObjects<dim> dof_object;

      const types::global_dof_index *
      get_cell_cache_start(const unsigned int obj_index,
                           const unsigned int dofs_per_cell) const;

      std::size_t
      memory_consumption() const;

      template <class Archive>
      void
      serialize(Archive &ar, const unsigned int version);
    };



    template <int dim>
    inline const types::global_dof_index *
    DoFLevel<dim>::get_cell_cache_start(const unsigned int obj_index,
                                        const unsigned int dofs_per_cell) const
    {
      Assert(obj_index * dofs_per_cell + dofs_per_cell <=
               cell_dof_indices_cache.size(),
             ExcInternalError());

      return cell_dof_indices_cache.data() + (obj_index * dofs_per_cell);
    }



    template <int dim>
    inline std::size_t
    DoFLevel<dim>::memory_consumption() const
    {
      return (MemoryConsumption::memory_consumption(cell_dof_indices_cache) +
              MemoryConsumption::memory_consumption(dof_object));
    }


    template <int dim>
    template <class Archive>
    inline void
    DoFLevel<dim>::serialize(Archive &ar, const unsigned int)
    {
      ar &cell_dof_indices_cache;
      ar &dof_object;
    }
  } // namespace DoFHandlerImplementation
} // namespace internal

DEAL_II_NAMESPACE_CLOSE

#endif