file_solution_history.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2025 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner

// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.

// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA



#ifndef LIBMESH_FILE_SOLUTION_HISTORY_H
#define LIBMESH_FILE_SOLUTION_HISTORY_H

// Local includes
#include "libmesh/solution_history.h"
#include "libmesh/libmesh.h"

// C++ includes
#include <vector>
#include <memory>

namespace libMesh
{

// Forward declarations
template <typename T> class NumericVector;
class DifferentiableSystem;

class FileSolutionHistory : public SolutionHistory
{
public:

  FileSolutionHistory(DifferentiableSystem & system);

  ~FileSolutionHistory();

  virtual void store(bool is_adjoint_solve, Real time) override;

  virtual void retrieve(bool is_adjoint_solve, Real time) override;

  virtual std::unique_ptr<SolutionHistory> clone() const override;

private:

  // A system reference
  DifferentiableSystem & _system;

  std::vector< std::unique_ptr<NumericVector<Number>> > dual_solution_copies;
  std::vector< std::unique_ptr<NumericVector<Number>> > old_dual_solution_copies;
};

} // end namespace libMesh

#endif // LIBMESH_FILE_SOLUTION_HISTORY_H