petsc_diff_solver.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2024 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_PETSC_DIFF_SOLVER_H
#define LIBMESH_PETSC_DIFF_SOLVER_H

#include "libmesh/libmesh_common.h"

#ifdef LIBMESH_HAVE_PETSC

// Local includes
#include "libmesh/diff_solver.h"
#include "libmesh/petsc_macro.h"
#include "libmesh/petsc_dm_wrapper.h"
#include "libmesh/wrapped_petsc.h"

// PETSc includes
#ifdef I
# define LIBMESH_SAW_I
#endif
#include <petscsnes.h>
#ifndef LIBMESH_SAW_I
# undef I // Avoid complex.h contamination
#endif

namespace libMesh
{

class PetscDiffSolver : public DiffSolver
{
public:
  explicit
  PetscDiffSolver (sys_type & system);

  virtual ~PetscDiffSolver ();

  typedef DiffSolver Parent;

  virtual void reinit () override;

  virtual void init () override;

  void clear ();

  virtual unsigned int solve () override;

protected:

  WrappedPetsc<SNES> _snes;

#if !PETSC_VERSION_LESS_THAN(3,7,3)
#if defined(LIBMESH_ENABLE_AMR) && defined(LIBMESH_HAVE_METAPHYSICL)
  PetscDMWrapper _dm_wrapper;
#endif
#endif

private:

  void setup_petsc_data();
};

} // namespace libMesh

#endif // #ifdef LIBMESH_HAVE_PETSC

#endif // LIBMESH_PETSC_DIFF_SOLVER_H