VertexCFD_LinearSolvers_PreconditionerFactory.hpp

#ifndef VERTEXCFD_LINEARSOLVERS_PRECONDITIONERFACTORY_HPP
#define VERTEXCFD_LINEARSOLVERS_PRECONDITIONERFACTORY_HPP
 
#include <Ifpack2_AdditiveSchwarz.hpp>
#include <Thyra_LinearOpWithSolveFactoryBase.hpp>
#include <Thyra_PreconditionerFactoryBase.hpp>
 
#include <memory>
 
namespace VertexCFD
{
namespace LinearSolvers
{
//---------------------------------------------------------------------------//
// Build a VertexCFD Preconditioner.
// This class allows for the construction of "custom" preconditioners that
// aren't supported through Trilinos.
//---------------------------------------------------------------------------//
class PreconditionerFactory : public Thyra::PreconditionerFactoryBase<double>
{
  public:
    // Determine if preconditioner is compatible with specified operator
    bool isCompatible(
        const Thyra::LinearOpSourceBase<double>& fwdOpSrc) const override;
 
    // Construct (but do not initialize) preconditioner
    Teuchos::RCP<Thyra::PreconditionerBase<double>> createPrec() const override;
 
    // Initialize preconditioner
    void initializePrec(
        const Teuchos::RCP<const Thyra::LinearOpSourceBase<double>>& fwdOpSrc,
        Thyra::PreconditionerBase<double>* precOp,
        const Thyra::ESupportSolveUse supportSolveUse
        = Thyra::SUPPORT_SOLVE_UNSPECIFIED) const override;
 
    void uninitializePrec(
        Thyra::PreconditionerBase<double>* prec,
        Teuchos::RCP<const Thyra::LinearOpSourceBase<double>>* fwdOpSrc = NULL,
        Thyra::ESupportSolveUse* supportSolveUse = NULL) const override;
 
    //
    // Teuchos::ParameterListAcceptor API
    //
    void setParameterList(
        const Teuchos::RCP<Teuchos::ParameterList>& params) override;
    Teuchos::RCP<Teuchos::ParameterList> getNonconstParameterList() override;
    Teuchos::RCP<Teuchos::ParameterList> unsetParameterList() override;
 
    Teuchos::RCP<const Teuchos::ParameterList>
    getValidParameters() const override;
 
  private:
    Teuchos::RCP<Teuchos::ParameterList> _params;
 
    mutable Teuchos::RCP<Ifpack2::AdditiveSchwarz<Tpetra::RowMatrix<>>> _schwarz;
};
 
//---------------------------------------------------------------------------//
 
} // namespace LinearSolvers
} // namespace VertexCFD
 
#endif // VERTEXCFD_LINEARSOLVERS_PRECONDITIONERFACTORY_HPP