SeparateComponentPreconditioner.hpp

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/*
 * ------------------------------------------------------------------------------------------------------------
 * SPDX-License-Identifier: LGPL-2.1-only
 *
 * Copyright (c) 2018-2020 Lawrence Livermore National Security LLC
 * Copyright (c) 2018-2020 The Board of Trustees of the Leland Stanford Junior University
 * Copyright (c) 2018-2020 Total, S.A
 * Copyright (c) 2019-     GEOSX Contributors
 * All rights reserved
 *
 * See top level LICENSE, COPYRIGHT, CONTRIBUTORS, NOTICE, and ACKNOWLEDGEMENTS files for details.
 * ------------------------------------------------------------------------------------------------------------
 */

#ifndef GEOSX_LINEARALGEBRA_SOLVERS_SEPARATECOMPONENTPRECONDITIONER_HPP_
#define GEOSX_LINEARALGEBRA_SOLVERS_SEPARATECOMPONENTPRECONDITIONER_HPP_

#include "PreconditionerBase.hpp"

#include <memory>

namespace geosx
{

template< typename LAI >
class SeparateComponentPreconditioner : public PreconditionerBase< LAI >
{
public:

  using Base = PreconditionerBase< LAI >;

  using Vector = typename Base::Vector;

  using Matrix = typename Base::Matrix;

  SeparateComponentPreconditioner( localIndex const numComp,
                                   std::unique_ptr< PreconditionerBase< LAI > > precond );

  virtual ~SeparateComponentPreconditioner() override;

  using PreconditionerBase< LAI >::compute;

  virtual void compute( Matrix const & mat, DofManager const & dofManager ) override;

  virtual void apply( Vector const & src, Vector & dst ) const override;

  virtual void clear() override;

  Matrix const & getPrecondMatrix() const
  {
    return m_matSC;
  }

  PreconditionerBase< LAI > const & getNestedPrecond() const
  {
    return *m_precond;
  }

private:

  localIndex m_numComp;

  Matrix m_matSC;

  std::unique_ptr< PreconditionerBase< LAI > > m_precond;
};

}

#endif //GEOSX_LINEARALGEBRA_SOLVERS_SEPARATECOMPONENTPRECONDITIONER_HPP_