KokkosSideUserObject.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 "KokkosUserObject.h"
#include "KokkosSideReducer.h"
#include "KokkosMaterialPropertyValue.h"

#include "BoundaryRestrictableRequired.h"
#include "MaterialPropertyInterface.h"
#include "CoupleableMooseVariableDependencyIntermediateInterface.h"
#include "TransientInterface.h"
#include "ElementIDInterface.h"

namespace Moose::Kokkos
{

class SideUserObject : public UserObject,
                       public SideReducer,
                       public ::MaterialPropertyInterface,
                       public ::CoupleableMooseVariableDependencyIntermediateInterface,
                       public ::TransientInterface,
                       public ::ElementIDInterface
{
public:
  static InputParameters validParams();

  SideUserObject(const InputParameters & parameters);

  SideUserObject(const SideUserObject & object);

  virtual void compute() override;

  template <typename Derived>
  KOKKOS_FUNCTION void operator()(DefaultLoop, const ThreadID tid, const Derived & object) const;

  using SideReducer::operator();

protected:
  virtual ThreadID numUserObjectThreads() const override { return numKokkosBoundarySides(); }
};

template <typename Derived>
KOKKOS_FUNCTION void
SideUserObject::operator()(DefaultLoop, const ThreadID tid, const Derived & object) const
{
  auto [elem, side] = kokkosBoundaryElementSideID(tid);

  Datum datum(elem, side, kokkosAssembly(), kokkosSystems());

  object.template execute<Derived>(datum);
}

} // namespace Moose::Kokkos