dune-pdelab  2.5-dev
chunkedblockordering.hh
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1 // -*- tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2 // vi: set et ts=8 sw=2 sts=2:
3 
4 #ifndef DUNE_PDELAB_ORDERING_CHUNKEDBLOCKORDERING_HH
5 #define DUNE_PDELAB_ORDERING_CHUNKEDBLOCKORDERING_HH
6 
7 #include <dune/typetree/typetree.hh>
8 
12 
13 namespace Dune {
14  namespace PDELab {
15 
16  namespace ordering {
17 
18 #ifndef DOXYGEN // implementation internals
19 
20  namespace chunked {
21 
22  struct tag_base
23  {
24 
25  tag_base(std::size_t block_size)
26  : _block_size(block_size)
27  {}
28 
29  std::size_t blockSize() const
30  {
31  return _block_size;
32  }
33 
34  private:
35 
36  const std::size_t _block_size;
37 
38  };
39 
40  template<std::size_t i>
41  struct base_holder
42  : public tag_base
43  {
44 
45  base_holder(std::size_t block_size)
46  : tag_base(block_size)
47  {}
48 
49  };
50 
51  } // namespace chunked
52 
53 #endif // DOXYGEN
54 
57 
65  template<typename OrderingTag>
66  struct Chunked
67  : public chunked::base_holder<decorated_ordering_tag<Chunked<OrderingTag>,OrderingTag>::level>
68  , public decorated_ordering_tag<Chunked<OrderingTag>,OrderingTag>
69  {
70 
71  Chunked(std::size_t block_size)
72  : chunked::base_holder<decorated_ordering_tag<Chunked<OrderingTag>,OrderingTag>::level>(block_size)
73  {}
74 
75  Chunked(std::size_t block_size, const OrderingTag& tag)
76  : chunked::base_holder<decorated_ordering_tag<Chunked<OrderingTag>,OrderingTag>::level>(block_size)
77  , decorated_ordering_tag<Chunked<OrderingTag>,OrderingTag>(tag)
78  {}
79 
80  Chunked(std::size_t block_size, OrderingTag&& tag)
81  : chunked::base_holder<decorated_ordering_tag<Chunked<OrderingTag>,OrderingTag>::level>(block_size)
82  , decorated_ordering_tag<Chunked<OrderingTag>,OrderingTag>(std::move(tag))
83  {}
84 
85  template<std::size_t i>
86  const chunked::base_holder<i>& chunked() const
87  {
88  return *this;
89  }
90 
91  template<std::size_t i>
92  chunked::base_holder<i>& chunked()
93  {
94  return *this;
95  }
96 
97  };
98 
99  template<typename Decorated>
101  {
102  return true;
103  }
104 
105  } // namespace ordering
106 
109 
111  template<typename Ordering>
113  : public TypeTree::CompositeNode<Ordering>
114  , public VirtualOrderingBase<typename Ordering::Traits::DOFIndex,
115  typename Ordering::Traits::ContainerIndex>
116  , public OrderingBase<typename Ordering::Traits::DOFIndex,
117  typename Ordering::Traits::ContainerIndex>
118  {
119  public:
120  typedef typename Ordering::Traits Traits;
121 
122  static const bool consume_tree_index = false;
123 
124  private:
125 
126  typedef TypeTree::CompositeNode<Ordering> NodeT;
127 
128  typedef OrderingBase<
129  typename Ordering::Traits::DOFIndex,
130  typename Ordering::Traits::ContainerIndex
131  > BaseT;
132 
133  public:
134 
135  Ordering& ordering()
136  {
137  return this->template child<0>();
138  }
139 
140  const Ordering& ordering() const
141  {
142  return this->template child<0>();
143  }
144 
145 
146  ChunkedBlockOrdering(const typename NodeT::NodeStorage& ordering, const ordering::chunked::tag_base& tag)
147  : NodeT(ordering)
148  , BaseT(*this,true,nullptr,this)
149  , _tag(tag)
150  {}
151 
153  : NodeT(r.nodeStorage())
154  , BaseT(r)
155  ,_tag(r._tag)
156  {
157  this->setDelegate(this);
158  }
159 
161  : NodeT(r.nodeStorage())
162  , BaseT(std::move(r))
163  ,_tag(r._tag)
164  {
165  this->setDelegate(this);
166  }
167 
168  virtual void map_index_dynamic(typename Traits::DOFIndexView di, typename Traits::ContainerIndex& ci) const
169  {
170  ordering().mapIndex(di,ci);
171  std::size_t flat_index = ci.back();
172  std::size_t block_index = flat_index / _tag.blockSize();
173  std::size_t inner_index = flat_index % _tag.blockSize();
174  ci.back() = inner_index;
175  ci.push_back(block_index);
176  }
177 
178  template<typename ItIn, typename ItOut>
179  void map_lfs_indices(ItIn in, const ItIn end, ItOut out) const
180  {
181  for (; in != end; ++in, ++out)
182  {
183  std::size_t flat_index = out->back();
184  std::size_t block_index = flat_index / _tag.blockSize();
185  std::size_t inner_index = flat_index % _tag.blockSize();
186  out->back() = inner_index;
187  out->push_back(block_index);
188  }
189  }
190 
191  template<typename CIOutIterator>
192  typename Traits::SizeType
193  extract_entity_indices(const typename Traits::DOFIndex::EntityIndex& ei,
194  typename Traits::SizeType child_index,
195  CIOutIterator ci_out, const CIOutIterator ci_end) const
196  {
197  for (; ci_out != ci_end; ++ci_out)
198  {
199  std::size_t flat_index = ci_out->back();
200  std::size_t block_index = flat_index / _tag.blockSize();
201  std::size_t inner_index = flat_index % _tag.blockSize();
202  ci_out->back() = inner_index;
203  ci_out->push_back(block_index);
204  }
205  return 0;
206  }
207 
208  void update()
209  {
210  ordering().update();
211  BaseT::update();
212  if (ordering().blockCount() % _tag.blockSize() != 0)
214  "Block size of chunked block ordering does not divide the block count "
215  "of the underlying ordering: "
216  << ordering().blockCount()
217  << " % "
218  << _tag.blockSize()
219  << " != 0"
220  );
221  this->_block_count = ordering().blockCount() / _tag.blockSize();
222  }
223 
224  private:
225 
226  const ordering::chunked::tag_base& _tag;
227 
228  };
229 
230  namespace ordering {
231 
232  namespace chunked {
233 
234  template<typename GFS, typename Transformation, typename Undecorated, typename Tag>
236  {
237 
239  typedef std::shared_ptr<transformed_type> transformed_storage_type;
240 
241  static transformed_type transform(const GFS& gfs, const Transformation& t, std::shared_ptr<Undecorated> undecorated)
242  {
243  return transformed_type(make_tuple(undecorated),gfs.orderingTag().template chunked<Tag::level>());
244  }
245 
246  static transformed_storage_type transform_storage(std::shared_ptr<const GFS> gfs_pointer, const Transformation& t, std::shared_ptr<Undecorated> undecorated)
247  {
248  return std::make_shared<transformed_type>(make_tuple(undecorated),gfs_pointer->orderingTag().template chunked<Tag::level>());
249  }
250 
251  };
252 
253  template<typename GFS, typename Transformation, typename Undecorated, typename GlueTag, typename UndecoratedTag>
255  register_gfs_to_decorator_descriptor(GFS*,Transformation*,Undecorated*,GlueTag*,Chunked<UndecoratedTag>*);
256 
257  } // namespace chunked
258  } // namespace ordering
259 
260 
261  template<typename GFS, typename Transformation, typename U>
262  struct power_gfs_to_local_ordering_descriptor<GFS,Transformation,ordering::Chunked<U> >
263  : public power_gfs_to_local_ordering_descriptor<GFS,Transformation,U>
264  {};
265 
266 
267  template<typename GFS, typename Transformation, typename U>
268  struct composite_gfs_to_local_ordering_descriptor<GFS,Transformation,ordering::Chunked<U> >
269  : public composite_gfs_to_local_ordering_descriptor<GFS,Transformation,U>
270  {};
271 
273  } // namespace PDELab
274 } // namespace Dune
275 
276 #endif // DUNE_PDELAB_ORDERING_CHUNKEDBLOCKORDERING_HH
Ordering & ordering()
Definition: chunkedblockordering.hh:135
const chunked::base_holder< i > & chunked() const
Definition: chunkedblockordering.hh:86
gfs_to_chunked< GFS, Transformation, Undecorated, GlueTag > register_gfs_to_decorator_descriptor(GFS *, Transformation *, Undecorated *, GlueTag *, Chunked< UndecoratedTag > *)
Chunked(std::size_t block_size, const OrderingTag &tag)
Definition: chunkedblockordering.hh:75
ChunkedBlockOrdering< Undecorated > transformed_type
Definition: chunkedblockordering.hh:238
Definition: chunkedblockordering.hh:66
constexpr bool deactivate_standard_blocking_for_ordering(const Chunked< Decorated > &)
Definition: chunkedblockordering.hh:100
void update()
Definition: chunkedblockordering.hh:208
ChunkedBlockOrdering(const typename NodeT::NodeStorage &ordering, const ordering::chunked::tag_base &tag)
Definition: chunkedblockordering.hh:146
ChunkedBlockOrdering(const ChunkedBlockOrdering &r)
Definition: chunkedblockordering.hh:152
Definition: chunkedblockordering.hh:235
const Ordering & ordering() const
Definition: chunkedblockordering.hh:140
Chunked(std::size_t block_size)
Definition: chunkedblockordering.hh:71
Chunked(std::size_t block_size, OrderingTag &&tag)
Definition: chunkedblockordering.hh:80
static transformed_storage_type transform_storage(std::shared_ptr< const GFS > gfs_pointer, const Transformation &t, std::shared_ptr< Undecorated > undecorated)
Definition: chunkedblockordering.hh:246
For backward compatibility – Do not use this!
Definition: adaptivity.hh:27
Definition: orderingbase.hh:20
Ordering that permutes top-level ContainerIndex entries.
Definition: chunkedblockordering.hh:112
virtual void map_index_dynamic(typename Traits::DOFIndexView di, typename Traits::ContainerIndex &ci) const
Definition: chunkedblockordering.hh:168
Ordering::Traits Traits
Definition: chunkedblockordering.hh:120
Traits::SizeType extract_entity_indices(const typename Traits::DOFIndex::EntityIndex &ei, typename Traits::SizeType child_index, CIOutIterator ci_out, const CIOutIterator ci_end) const
Definition: chunkedblockordering.hh:193
std::shared_ptr< transformed_type > transformed_storage_type
Definition: chunkedblockordering.hh:239
chunked::base_holder< i > & chunked()
Definition: chunkedblockordering.hh:92
STL namespace.
Definition: ordering/utility.hh:231
The block size of a ChunkedBlockOrdering does not divide the block count of the underlying ordering...
Definition: exceptions.hh:54
static transformed_type transform(const GFS &gfs, const Transformation &t, std::shared_ptr< Undecorated > undecorated)
Definition: chunkedblockordering.hh:241
ChunkedBlockOrdering(ChunkedBlockOrdering &&r)
Definition: chunkedblockordering.hh:160
void map_lfs_indices(ItIn in, const ItIn end, ItOut out) const
Definition: chunkedblockordering.hh:179