Teko_DiagnosticLinearOp.hpp

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// @HEADER
// *****************************************************************************
//      Teko: A package for block and physics based preconditioning
//
// Copyright 2010 NTESS and the Teko contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER

#ifndef __Teko_DiagnosticLinearOp_hpp__
#define __Teko_DiagnosticLinearOp_hpp__

#include <iostream>

#include "Teko_Utilities.hpp"
#include "Teko_ImplicitLinearOp.hpp"

#include "Teuchos_Time.hpp"

namespace Teko {

class DiagnosticLinearOp : public ImplicitLinearOp {
 public:
  DiagnosticLinearOp(const Teuchos::RCP<std::ostream> &ostrm, const ModifiableLinearOp &A,
                     const std::string &diagnosticString);

  DiagnosticLinearOp(const Teuchos::RCP<std::ostream> &ostrm, const LinearOp &A,
                     const std::string &diagnosticString);

  DiagnosticLinearOp(const Teuchos::RCP<std::ostream> &ostrm, const LinearOp &fwdOp,
                     const ModifiableLinearOp &A, const std::string &diagnosticString);

  virtual ~DiagnosticLinearOp();



  virtual VectorSpace range() const { return wrapOpA_lo_->range(); }

  virtual VectorSpace domain() const { return wrapOpA_lo_->domain(); }

  virtual void implicitApply(const MultiVector &x, MultiVector &y, const double alpha = 1.0,
                             const double beta = 0.0) const;

  virtual void describe(Teuchos::FancyOStream &out_arg,
                        const Teuchos::EVerbosityLevel verbLevel) const {
    wrapOpA_lo_->describe(out_arg, verbLevel);
  }

  int numApplications() const { return timer_.numCalls(); }
  double totalTime() const { return timer_.totalElapsedTime(); }

  ModifiableLinearOp getModifiableOp() const { return wrapOpA_; }

  void setLinearOp(const LinearOp &lo) {
    wrapOpA_lo_ = lo;
    wrapOpA_    = Teuchos::null;
  }

  LinearOp getLinearOp() const { return wrapOpA_lo_; }

  void setForwardOp(const Teko::LinearOp &lo) { fwdOp_ = lo; }

  /* Get the residual norm.  Used purely for testing.
   */
  double getResidualNorm() const { return residualNorm_; }

 protected:
  // fundamental operators to use
  Teuchos::RCP<std::ostream> outputStream_;
  ModifiableLinearOp wrapOpA_;
  LinearOp wrapOpA_lo_;
  LinearOp fwdOp_;
  std::string diagString_;

  mutable double residualNorm_;  // for testing purposes
  mutable Teuchos::Time timer_;

 private:
  // hide me!
  DiagnosticLinearOp();
  DiagnosticLinearOp(const DiagnosticLinearOp &);
};

inline ModifiableLinearOp createDiagnosticLinearOp(const Teuchos::RCP<std::ostream> &os,
                                                   const ModifiableLinearOp &A,
                                                   const std::string &label) {
  return Teuchos::rcp(new DiagnosticLinearOp(os, A, label));
}

inline ModifiableLinearOp createDiagnosticLinearOp(const Teuchos::RCP<std::ostream> &os,
                                                   const LinearOp &A, const std::string &label) {
  return Teuchos::rcp(new DiagnosticLinearOp(os, A, label));
}

inline ModifiableLinearOp createDiagnosticLinearOp(const Teuchos::RCP<std::ostream> &os,
                                                   const Teko::LinearOp &fwdOp,
                                                   const ModifiableLinearOp &A,
                                                   const std::string &label) {
  return Teuchos::rcp(new DiagnosticLinearOp(os, fwdOp, A, label));
}

}  // end namespace Teko

#endif