| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- | ||
| 2 | // vi: set et ts=4 sw=4 sts=4: | ||
| 3 | // | ||
| 4 | // SPDX-FileCopyrightText: Copyright © DuMux Project contributors, see AUTHORS.md in root folder | ||
| 5 | // SPDX-License-Identifier: GPL-3.0-or-later | ||
| 6 | // | ||
| 7 | /*! | ||
| 8 | * \file | ||
| 9 | * \ingroup Parallel | ||
| 10 | * \brief Contains a class to exchange entries of a vector | ||
| 11 | */ | ||
| 12 | #ifndef DUMUX_VECTOR_COMM_DATA_HANDLE_HH | ||
| 13 | #define DUMUX_VECTOR_COMM_DATA_HANDLE_HH | ||
| 14 | |||
| 15 | #include <algorithm> | ||
| 16 | |||
| 17 | #include <dune/grid/common/datahandleif.hh> | ||
| 18 | |||
| 19 | namespace Dumux { | ||
| 20 | |||
| 21 | namespace Detail { | ||
| 22 | |||
| 23 | struct SetEqual | ||
| 24 | { | ||
| 25 | template<class A, class B> | ||
| 26 | static void apply(A& a, const B& b) | ||
| 27 | { a = b; } | ||
| 28 | }; | ||
| 29 | |||
| 30 | struct Sum | ||
| 31 | { | ||
| 32 | template<class A, class B> | ||
| 33 | 85270 | static void apply(A& a, const B& b) | |
| 34 | 85670 | { a += b; } | |
| 35 | }; | ||
| 36 | |||
| 37 | struct Max | ||
| 38 | { | ||
| 39 | template<class A, class B> | ||
| 40 |
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9482 | static void apply(A& a, const B& b) |
| 41 | { | ||
| 42 | using std::max; | ||
| 43 | 9482 | a = max(a,b); | |
| 44 | } | ||
| 45 | }; | ||
| 46 | |||
| 47 | struct Min | ||
| 48 | { | ||
| 49 | template<class A, class B> | ||
| 50 |
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9496 | static void apply(A& a, const B& b) |
| 51 | { | ||
| 52 | using std::min; | ||
| 53 | 9496 | a = min(a,b); | |
| 54 | } | ||
| 55 | }; | ||
| 56 | } // end namespace Detail | ||
| 57 | |||
| 58 | /*! | ||
| 59 | * \ingroup Parallel | ||
| 60 | * \brief A data handle class to exchange entries of a vector | ||
| 61 | */ | ||
| 62 | template<class Mapper, class Vector, int entityCodim, | ||
| 63 | class ScatterOperator, class DataT = typename Vector::value_type> | ||
| 64 | class VectorCommDataHandle | ||
| 65 | : public Dune::CommDataHandleIF<VectorCommDataHandle<Mapper, Vector, entityCodim, ScatterOperator, DataT>, DataT> | ||
| 66 | { | ||
| 67 | public: | ||
| 68 | //! export type of data for message buffer | ||
| 69 | using DataType = DataT; | ||
| 70 | |||
| 71 |
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4252 | VectorCommDataHandle(const Mapper& mapper, Vector& vector) |
| 72 |
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4252 | : mapper_(mapper), vector_(vector) |
| 73 | {} | ||
| 74 | |||
| 75 | //! returns true if data for this codim should be communicated | ||
| 76 | 72 | bool contains(int dim, int codim) const | |
| 77 | 72 | { return (codim == entityCodim); } | |
| 78 | |||
| 79 | //! returns true if size per entity of given dim and codim is a constant | ||
| 80 | bool fixedSize(int dim, int codim) const | ||
| 81 | { return true; } | ||
| 82 | |||
| 83 | /*! | ||
| 84 | * \brief how many objects of type DataType have to be sent for a given entity | ||
| 85 | * \note Only the sender side needs to know this size. | ||
| 86 | */ | ||
| 87 | template<class Entity> | ||
| 88 | std::size_t size(Entity& entity) const | ||
| 89 | { return 1; } | ||
| 90 | |||
| 91 | //! pack data from user to message buffer | ||
| 92 | template<class MessageBuffer, class Entity> | ||
| 93 | 209516 | void gather(MessageBuffer& buff, const Entity& entity) const | |
| 94 | 209516 | { buff.write(vector_[mapper_.index(entity)]); } | |
| 95 | |||
| 96 | /*! | ||
| 97 | * \brief unpack data from message buffer to user | ||
| 98 | * \note n is the number of objects sent by the sender | ||
| 99 | */ | ||
| 100 | template<class MessageBuffer, class Entity> | ||
| 101 | 209516 | void scatter(MessageBuffer& buff, const Entity& entity, std::size_t n) | |
| 102 | { | ||
| 103 | 170788 | DataType x; | |
| 104 | 209516 | buff.read(x); | |
| 105 |
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209516 | ScatterOperator::apply(vector_[mapper_.index(entity)], x); |
| 106 | 209516 | } | |
| 107 | |||
| 108 | protected: | ||
| 109 | const Mapper& mapper_; | ||
| 110 | Vector& vector_; | ||
| 111 | }; | ||
| 112 | |||
| 113 | template<class Mapper, class Vector, int codim, class DataType = typename Vector::value_type> | ||
| 114 | using VectorCommDataHandleEqual = VectorCommDataHandle<Mapper, Vector, codim, Detail::SetEqual, DataType>; | ||
| 115 | |||
| 116 | template<class Mapper, class Vector, int codim, class DataType = typename Vector::value_type> | ||
| 117 | using VectorCommDataHandleSum = VectorCommDataHandle<Mapper, Vector, codim, Detail::Sum, DataType>; | ||
| 118 | |||
| 119 | template<class Mapper, class Vector, int codim, class DataType = typename Vector::value_type> | ||
| 120 | using VectorCommDataHandleMin = VectorCommDataHandle<Mapper, Vector, codim, Detail::Min, DataType>; | ||
| 121 | |||
| 122 | template<class Mapper, class Vector, int codim, class DataType = typename Vector::value_type> | ||
| 123 | using VectorCommDataHandleMax = VectorCommDataHandle<Mapper, Vector, codim, Detail::Max, DataType>; | ||
| 124 | |||
| 125 | } // end namespace Dumux | ||
| 126 | |||
| 127 | #endif | ||
| 128 |