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// ---------------------------------------------------------------------
//
// Copyright (C) 2009 - 2017 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.
//
// ---------------------------------------------------------------------
#include <deal.II/base/config.h>
#ifdef DEAL_II_WITH_P4EST
#include <deal.II/lac/vector.h>
#include <deal.II/lac/block_vector.h>
#include <deal.II/lac/la_parallel_vector.h>
#include <deal.II/lac/la_parallel_block_vector.h>
#include <deal.II/lac/petsc_parallel_vector.h>
#include <deal.II/lac/petsc_parallel_block_vector.h>
#include <deal.II/lac/trilinos_vector.h>
#include <deal.II/lac/trilinos_parallel_block_vector.h>
#include <deal.II/distributed/solution_transfer.h>
#include <deal.II/distributed/tria.h>
#include <deal.II/dofs/dof_tools.h>
#include <deal.II/dofs/dof_accessor.h>
#include <deal.II/grid/tria_accessor.h>
#include <deal.II/grid/tria_iterator.h>
#include <functional>
DEAL_II_NAMESPACE_OPEN
namespace parallel
{
namespace distributed
{
template <int dim, typename VectorType, typename DoFHandlerType>
SolutionTransfer<dim, VectorType, DoFHandlerType>::SolutionTransfer (const DoFHandlerType &dof)
:
dof_handler(&dof, typeid(*this).name()),
offset (numbers::invalid_unsigned_int)
{
Assert ((dynamic_cast<const parallel::distributed::Triangulation<dim,DoFHandlerType::space_dimension>*>
(&dof_handler->get_triangulation()) != nullptr),
ExcMessage("parallel::distributed::SolutionTransfer requires a parallel::distributed::Triangulation object."));
}
template <int dim, typename VectorType, typename DoFHandlerType>
void
SolutionTransfer<dim, VectorType, DoFHandlerType>::
prepare_for_coarsening_and_refinement (const std::vector<const VectorType *> &all_in)
{
input_vectors = all_in;
register_data_attach( get_data_size() * input_vectors.size() );
}
template <int dim, typename VectorType, typename DoFHandlerType>
void
SolutionTransfer<dim, VectorType, DoFHandlerType>::register_data_attach (const std::size_t size)
{
Assert(size > 0, ExcMessage("Please transfer at least one vector!"));
//TODO: casting away constness is bad
parallel::distributed::Triangulation<dim,DoFHandlerType::space_dimension> *tria
= (dynamic_cast<parallel::distributed::Triangulation<dim,DoFHandlerType::space_dimension>*>
(const_cast<dealii::Triangulation<dim,DoFHandlerType::space_dimension>*>
(&dof_handler->get_triangulation())));
Assert (tria != nullptr, ExcInternalError());
offset
= tria->register_data_attach(size,
std::bind(&SolutionTransfer<dim, VectorType,
DoFHandlerType>::pack_callback,
this,
std::placeholders::_1,
std::placeholders::_2,
std::placeholders::_3));
}
template <int dim, typename VectorType, typename DoFHandlerType>
void
SolutionTransfer<dim, VectorType, DoFHandlerType>::
prepare_for_coarsening_and_refinement (const VectorType &in)
{
std::vector<const VectorType *> all_in(1, &in);
prepare_for_coarsening_and_refinement(all_in);
}
template <int dim, typename VectorType, typename DoFHandlerType>
void
SolutionTransfer<dim, VectorType, DoFHandlerType>::prepare_serialization (const VectorType &in)
{
std::vector<const VectorType *> all_in(1, &in);
prepare_serialization(all_in);
}
template <int dim, typename VectorType, typename DoFHandlerType>
void
SolutionTransfer<dim, VectorType, DoFHandlerType>::prepare_serialization
(const std::vector<const VectorType *> &all_in)
{
prepare_for_coarsening_and_refinement (all_in);
}
template <int dim, typename VectorType, typename DoFHandlerType>
void
SolutionTransfer<dim, VectorType, DoFHandlerType>::deserialize (VectorType &in)
{
std::vector<VectorType *> all_in(1, &in);
deserialize(all_in);
}
template <int dim, typename VectorType, typename DoFHandlerType>
void
SolutionTransfer<dim, VectorType, DoFHandlerType>::deserialize (std::vector<VectorType *> &all_in)
{
register_data_attach( get_data_size() * all_in.size() );
// this makes interpolate() happy
input_vectors.resize(all_in.size());
interpolate(all_in);
}
template <int dim, typename VectorType, typename DoFHandlerType>
void
SolutionTransfer<dim, VectorType, DoFHandlerType>::interpolate (std::vector<VectorType *> &all_out)
{
Assert(input_vectors.size()==all_out.size(),
ExcDimensionMismatch(input_vectors.size(), all_out.size()) );
//TODO: casting away constness is bad
parallel::distributed::Triangulation<dim,DoFHandlerType::space_dimension> *tria
= (dynamic_cast<parallel::distributed::Triangulation<dim,DoFHandlerType::space_dimension>*>
(const_cast<dealii::Triangulation<dim,DoFHandlerType::space_dimension>*>
(&dof_handler->get_triangulation())));
Assert (tria != nullptr, ExcInternalError());
tria->notify_ready_to_unpack(offset,
std::bind(&SolutionTransfer<dim, VectorType,
DoFHandlerType>::unpack_callback,
this,
std::placeholders::_1,
std::placeholders::_2,
std::placeholders::_3,
std::ref(all_out)));
for (typename std::vector<VectorType *>::iterator it=all_out.begin();
it !=all_out.end();
++it)
(*it)->compress(::dealii::VectorOperation::insert);
input_vectors.clear();
}
template <int dim, typename VectorType, typename DoFHandlerType>
void
SolutionTransfer<dim, VectorType, DoFHandlerType>::interpolate (VectorType &out)
{
std::vector<VectorType *> all_out(1, &out);
interpolate(all_out);
}
template <int dim, typename VectorType, typename DoFHandlerType>
unsigned int
SolutionTransfer<dim, VectorType, DoFHandlerType>::get_data_size() const
{
return sizeof(typename VectorType::value_type)* DoFTools::max_dofs_per_cell(*dof_handler);
}
template <int dim, typename VectorType, typename DoFHandlerType>
void
SolutionTransfer<dim, VectorType, DoFHandlerType>::
pack_callback(const typename Triangulation<dim,DoFHandlerType::space_dimension>::cell_iterator &cell_,
const typename Triangulation<dim,DoFHandlerType::space_dimension>::CellStatus /*status*/,
void *data)
{
typename VectorType::value_type *data_store = reinterpret_cast<typename VectorType::value_type *>(data);
typename DoFHandlerType::cell_iterator cell(*cell_, dof_handler);
const unsigned int dofs_per_cell=cell->get_fe().dofs_per_cell;
::dealii::Vector<typename VectorType::value_type> dofvalues(dofs_per_cell);
for (typename std::vector<const VectorType *>::iterator it=input_vectors.begin();
it !=input_vectors.end();
++it)
{
cell->get_interpolated_dof_values(*(*it), dofvalues);
std::memcpy(data_store, &dofvalues(0), sizeof(typename VectorType::value_type)*dofs_per_cell);
data_store += dofs_per_cell;
}
}
template <int dim, typename VectorType, typename DoFHandlerType>
void
SolutionTransfer<dim, VectorType, DoFHandlerType>::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)
{
typename DoFHandlerType::cell_iterator
cell(*cell_, dof_handler);
const unsigned int dofs_per_cell=cell->get_fe().dofs_per_cell;
::dealii::Vector<typename VectorType::value_type> dofvalues(dofs_per_cell);
const typename VectorType::value_type *data_store = reinterpret_cast<const typename VectorType::value_type *>(data);
for (typename std::vector<VectorType *>::iterator it = all_out.begin();
it != all_out.end();
++it)
{
std::memcpy(&dofvalues(0), data_store, sizeof(typename VectorType::value_type)*dofs_per_cell);
cell->set_dof_values_by_interpolation(dofvalues, *(*it));
data_store += dofs_per_cell;
}
}
}
}
// explicit instantiations
#include "solution_transfer.inst"
DEAL_II_NAMESPACE_CLOSE
#endif
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