dof_levels.h

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// -----------------------------------------------------------------------------
//
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception OR LGPL-2.1-or-later
// Copyright (C) 1998 - 2025 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_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/base/types.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