VariableValueElementSubdomainModifier.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 "ElementSubdomainModifier.h"

class VariableValueElementSubdomainModifier : public ElementSubdomainModifier
{
public:
  static InputParameters validParams();

  VariableValueElementSubdomainModifier(const InputParameters & parameters);

protected:
  virtual SubdomainID computeSubdomainID() override;

private:
  const VariableValue & _v;
  // save the subdomain IDs that are requested but do not actually exist in the mesh
  std::unordered_set<SubdomainID> _void_sids;
  std::mutex _void_sids_mutex;
};