dune-grid  2.5-git
geometrygrid/datahandle.hh
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1 // -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2 // vi: set et ts=4 sw=2 sts=2:
3 #ifndef DUNE_GEOGRID_DATAHANDLE_HH
4 #define DUNE_GEOGRID_DATAHANDLE_HH
5 
6 #include <dune/common/typetraits.hh>
7 
12 
13 namespace Dune
14 {
15 
16  namespace GeoGrid
17  {
18 
19  // GeometryGridDataHandle
20  // ----------------------
21 
22  template< class Grid, class WrappedHandle >
24  : public CommDataHandleIF< CommDataHandle< Grid, WrappedHandle >, typename WrappedHandle::DataType >
25  {
26  typedef typename std::remove_const< Grid >::type::Traits Traits;
27 
28  public:
29  CommDataHandle ( const Grid &grid, WrappedHandle &handle )
30  : grid_( grid ),
31  wrappedHandle_( handle )
32  {}
33 
34  bool contains ( int dim, int codim ) const
35  {
36  const bool contains = wrappedHandle_.contains( dim, codim );
37  if( contains )
38  assertHostEntity( dim, codim );
39  return contains;
40  }
41 
42  bool fixedSize ( int dim, int codim ) const
43  {
44  return wrappedHandle_.fixedSize( dim, codim );
45  }
46 
47  template< class HostEntity >
48  size_t size ( const HostEntity &hostEntity ) const
49  {
50  typedef typename Grid::Traits::template Codim< HostEntity::codimension >::Entity Entity;
51  typedef typename Grid::Traits::template Codim< HostEntity::codimension >::EntityImpl EntityImpl;
52  Entity entity( EntityImpl( grid_, hostEntity ) );
53  return wrappedHandle_.size( entity );
54  }
55 
56  template< class MessageBuffer, class HostEntity >
57  void gather ( MessageBuffer &buffer, const HostEntity &hostEntity ) const
58  {
59  typedef typename Grid::Traits::template Codim< HostEntity::codimension >::Entity Entity;
60  typedef typename Grid::Traits::template Codim< HostEntity::codimension >::EntityImpl EntityImpl;
61  Entity entity( EntityImpl( grid_, hostEntity ) );
62  wrappedHandle_.gather( buffer, entity );
63  }
64 
65  template< class MessageBuffer, class HostEntity >
66  void scatter ( MessageBuffer &buffer, const HostEntity &hostEntity, size_t size )
67  {
68  typedef typename Grid::Traits::template Codim< HostEntity::codimension >::Entity Entity;
69  typedef typename Grid::Traits::template Codim< HostEntity::codimension >::EntityImpl EntityImpl;
70  Entity entity( EntityImpl( grid_, hostEntity ) );
71  wrappedHandle_.scatter( buffer, entity, size );
72  }
73 
74  private:
75  static void assertHostEntity ( int dim, int codim )
76  {
78  DUNE_THROW( NotImplemented, "Host grid has no entities for codimension " << codim << "." );
79  }
80 
81  const Grid &grid_;
82  WrappedHandle &wrappedHandle_;
83  };
84 
85  } // namespace GeoGrid
86 
87 } // namespace Dune
88 
89 #endif // #ifndef DUNE_GEOGRID_DATAHANDLE_HH
DUNE-conform implementation of the entityThis class merely changes the template parameters of the ent...
Definition: geometrygrid/entity.hh:47
Definition: geometrygrid/datahandle.hh:23
Describes the parallel communication interface class for MessageBuffers and DataHandles.
void scatter(MessageBuffer &buffer, const HostEntity &hostEntity, size_t size)
Definition: geometrygrid/datahandle.hh:66
bool fixedSize(int dim, int codim) const
Definition: geometrygrid/datahandle.hh:42
CommDataHandle(const Grid &grid, WrappedHandle &handle)
Definition: geometrygrid/datahandle.hh:29
Include standard header files.
Definition: agrid.hh:59
CommDataHandleIF describes the features of a data handle for communication in parallel runs using the...
Definition: datahandleif.hh:72
size_t size(const HostEntity &hostEntity) const
Definition: geometrygrid/datahandle.hh:48
bool contains(int dim, int codim) const
Definition: geometrygrid/datahandle.hh:34
void gather(MessageBuffer &buffer, const HostEntity &hostEntity) const
Definition: geometrygrid/datahandle.hh:57
Different resources needed by all grid implementations.
Grid abstract base classThis class is the base class for all grid implementations. Although no virtual functions are used we call it abstract since its methods do not contain an implementation but forward to the methods of the derived class via the Barton-Nackman trick.
Definition: common/grid.hh:373
Definition: geometrygrid/capabilities.hh:104