63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
// Copyright (c) 2010-2022, Lawrence Livermore National Security, LLC. Produced
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// at the Lawrence Livermore National Laboratory. All Rights reserved. See files
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// LICENSE and NOTICE for details. LLNL-CODE-806117.
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//
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// This file is part of the MFEM library. For more information and source code
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// availability visit https://mfem.org.
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//
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// MFEM is free software; you can redistribute it and/or modify it under the
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// terms of the BSD-3 license. We welcome feedback and contributions, see file
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// CONTRIBUTING.md for details.
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#ifndef MFEM_LINEARFORM_EXT
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#define MFEM_LINEARFORM_EXT
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#include "../general/array.hpp"
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#include "../linalg/vector.hpp"
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namespace mfem
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{
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class Operator;
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class LinearForm;
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/// Class extending the LinearForm class to support assembly on devices.
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class LinearFormExtension
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{
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/// Attributes of all mesh elements.
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Array<int> attributes, bdr_attributes;
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/// Temporary markers for device kernels.
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Array<int> markers, bdr_markers;
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/// Linear form from which this extension depends. Not owned.
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LinearForm *lf;
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/// Operator that converts FiniteElementSpace L-vectors to E-vectors.
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const ElementRestrictionOperator *elem_restrict_lex; // Not owned
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/// Operator that converts L-vectors to boundary E-vectors.
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const FaceRestriction *bdr_restrict_lex; // Not owned
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/// Internal E-vectors.
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mutable Vector b, bdr_b;
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public:
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/// \brief Create a LinearForm extension of @a lf.
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LinearFormExtension(LinearForm *lf);
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~LinearFormExtension() { }
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/// Assemble the linear form, compatible with device execution.
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/// Only integrators added with AddDomainIntegrator are supported for now.
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void Assemble();
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/// Update the linear form extension.
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void Update();
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};
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} // namespace mfem
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#endif // MFEM_LINEARFORM_EXT
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