MueLu_LocalPermutationStrategy_decl.hpp

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// @HEADER
// *****************************************************************************
//        MueLu: A package for multigrid based preconditioning
//
// Copyright 2012 NTESS and the MueLu contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER

/*
 * MueLu_LocalPermutationStrategy_decl.hpp
 *
 *  Created on: Feb 19, 2013
 *      Author: tobias
 */

#ifndef MUELU_LOCALPERMUTATIONSTRATEGY_DECL_HPP_
#define MUELU_LOCALPERMUTATIONSTRATEGY_DECL_HPP_

#include <Xpetra_Matrix_fwd.hpp>
#include <Xpetra_Vector_fwd.hpp>
#include <Xpetra_VectorFactory_fwd.hpp>
#include <Xpetra_CrsMatrixWrap_fwd.hpp>

#include "MueLu_ConfigDefs.hpp"
#include "MueLu_Level.hpp"
#include "MueLu_BaseClass.hpp"

namespace MueLu {


template <class Scalar        = DefaultScalar,
          class LocalOrdinal  = DefaultLocalOrdinal,
          class GlobalOrdinal = DefaultGlobalOrdinal,
          class Node          = DefaultNode>
class LocalPermutationStrategy : public BaseClass {
#undef MUELU_LOCALPERMUTATIONSTRATEGY_SHORT
#include "MueLu_UseShortNames.hpp"
 public:

  void BuildPermutation(const Teuchos::RCP<Matrix>& A, const Teuchos::RCP<const Map> permRowMap, Level& currentLevel, const FactoryBase* genFactory) const;

 private:
  void BuildPermutations(size_t nDofsPerNode) const;

  mutable std::vector<std::vector<int> > result_permvecs_;
  mutable size_t permWidth_;

  GlobalOrdinal getGlobalDofId(const Teuchos::RCP<Matrix>& A, LocalOrdinal localNodeId, LocalOrdinal localDof) const;
  GlobalOrdinal globalDofId2globalNodeId(const Teuchos::RCP<Matrix>& A, GlobalOrdinal grid) const;
};

}  // namespace MueLu

#define MUELU_LOCALPERMUTATIONSTRATEGY_SHORT

#endif /* MUELU_LOCALPERMUTATIONSTRATEGY_DECL_HPP_ */