ComputeLinearFVGreenGaussGradientVolumeThread.h

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html

#pragma once

#include "MooseTypes.h"
#include "MooseMesh.h"
#include "MooseLinearVariableFV.h"

// libmesh
#include "libmesh/elem_range.h"
#include "libmesh/threads.h"
#include "libmesh/linear_implicit_system.h"

class FEProblemBase;

class ComputeLinearFVGreenGaussGradientVolumeThread
{
public:
  ComputeLinearFVGreenGaussGradientVolumeThread(FEProblemBase & fe_problem,
                                                const unsigned int linear_system_num);

  ComputeLinearFVGreenGaussGradientVolumeThread(ComputeLinearFVGreenGaussGradientVolumeThread & x,
                                                Threads::split split);
  using ElemInfoRange = StoredRange<MooseMesh::const_elem_info_iterator, const ElemInfo *>;
  void operator()(const ElemInfoRange & range);

  void join(const ComputeLinearFVGreenGaussGradientVolumeThread & y);

protected:
  // Reference to the problem
  FEProblemBase & _fe_problem;

  const unsigned int _dim;

  const unsigned int _linear_system_number;

  const libMesh::LinearImplicitSystem & _linear_system;

  const unsigned int _system_number;

  THREAD_ID _tid;

  MooseLinearVariableFV<Real> * _current_var;
};