Thyra_BelosLinearOpWithSolve_decl.hpp

// @HEADER
// *****************************************************************************
//         Stratimikos: Thyra-based strategies for linear solvers
//
// Copyright 2006 NTESS and the Stratimikos contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER

#ifndef THYRA_BELOS_LINEAR_OP_WITH_SOLVE_DECL_HPP
#define THYRA_BELOS_LINEAR_OP_WITH_SOLVE_DECL_HPP

#include "Thyra_LinearOpWithSolveBase.hpp"
#include "Thyra_LinearOpSourceBase.hpp"
#include "BelosSolverManager.hpp"
#include "BelosThyraAdapter.hpp"
#include "Teuchos_StandardMemberCompositionMacros.hpp"


namespace Thyra {


template<class Scalar>
class BelosLinearOpWithSolve : virtual public LinearOpWithSolveBase<Scalar>
{
public:


  typedef MultiVectorBase<Scalar>    MV_t;
  typedef LinearOpBase<Scalar>       LO_t;



  BelosLinearOpWithSolve();

  void initialize(
    const RCP<Belos::LinearProblem<Scalar,MV_t,LO_t> > &lp,
    const RCP<Teuchos::ParameterList> &solverPL,
    const RCP<Belos::SolverManager<Scalar,MV_t,LO_t> > &iterativeSolver,
    const RCP<const LinearOpSourceBase<Scalar> > &fwdOpSrc,
    const RCP<const PreconditionerBase<Scalar> > &prec,
    const bool isExternalPrec,
    const RCP<const LinearOpSourceBase<Scalar> > &approxFwdOpSrc,
    const ESupportSolveUse &supportSolveUse,
    const int convergenceTestFrequency
    );

  RCP<const LinearOpSourceBase<Scalar> > extract_fwdOpSrc();

  RCP<const PreconditionerBase<Scalar> > extract_prec();

  bool isExternalPrec() const;

  RCP<const LinearOpSourceBase<Scalar> > extract_approxFwdOpSrc();

  ESupportSolveUse supportSolveUse() const;

  void uninitialize(
    RCP<Belos::LinearProblem<Scalar,MV_t,LO_t> > *lp = NULL,
    RCP<Teuchos::ParameterList> *solverPL = NULL,
    RCP<Belos::SolverManager<Scalar,MV_t,LO_t> > *iterativeSolver = NULL,
    RCP<const LinearOpSourceBase<Scalar> > *fwdOpSrc = NULL,
    RCP<const PreconditionerBase<Scalar> > *prec = NULL,
    bool *isExternalPrec = NULL,
    RCP<const LinearOpSourceBase<Scalar> > *approxFwdOpSrc = NULL,
    ESupportSolveUse *supportSolveUse = NULL
    );


  RCP< const VectorSpaceBase<Scalar> > range() const;
  RCP< const VectorSpaceBase<Scalar> > domain() const;
  RCP<const LinearOpBase<Scalar> > clone() const;

  std::string description() const;
  void describe(
    Teuchos::FancyOStream &out,
    const Teuchos::EVerbosityLevel verbLevel
    ) const;


  void setParameterList(RCP<Teuchos::ParameterList> const& paramList);
  RCP<Teuchos::ParameterList> getNonconstParameterList();
  RCP<Teuchos::ParameterList> unsetParameterList();
  RCP<const Teuchos::ParameterList> getParameterList() const;
  RCP<const Teuchos::ParameterList> getValidParameters() const;


protected:

  virtual bool opSupportedImpl(EOpTransp M_trans) const;
  virtual void applyImpl(
    const EOpTransp M_trans,
    const MultiVectorBase<Scalar> &X,
    const Ptr<MultiVectorBase<Scalar> > &Y,
    const Scalar alpha,
    const Scalar beta
    ) const;

  virtual bool solveSupportsImpl(EOpTransp M_trans) const;
  virtual bool solveSupportsNewImpl(EOpTransp transp,
    const Ptr<const SolveCriteria<Scalar> > solveCriteria) const;
  virtual bool solveSupportsSolveMeasureTypeImpl(
    EOpTransp M_trans, const SolveMeasureType& solveMeasureType
    ) const;
  virtual SolveStatus<Scalar> solveImpl(
    const EOpTransp transp,
    const MultiVectorBase<Scalar> &B,
    const Ptr<MultiVectorBase<Scalar> > &X,
    const Ptr<const SolveCriteria<Scalar> > solveCriteria
    ) const;
  
private:
  
  // ///////////////////////////////
  // Private data members


  RCP<Belos::LinearProblem<Scalar,MV_t,LO_t> > lp_;
  RCP<Teuchos::ParameterList> solverPL_;
  RCP<Belos::SolverManager<Scalar,MV_t,LO_t> > iterativeSolver_;
  int convergenceTestFrequency_;

  RCP<const LinearOpSourceBase<Scalar> > fwdOpSrc_;
  RCP<const PreconditionerBase<Scalar> > prec_;
  bool isExternalPrec_;
  RCP<const LinearOpSourceBase<Scalar> > approxFwdOpSrc_;
  ESupportSolveUse supportSolveUse_;

  typename Teuchos::ScalarTraits<Scalar>::magnitudeType defaultTol_;
                                                     
  void assertInitialized() const;

  std::string label_, filenameLHS_, filenameRHS_;
  mutable int counter_;
  
};


} // namespace Thyra


#endif  // THYRA_BELOS_LINEAR_OP_WITH_SOLVE_DECL_HPP