libMesh::Parallel::StandardType< Point > Class Template Reference

#include <parallel_algebra.h>

Inheritance diagram for libMesh::Parallel::StandardType< Point >:

[legend]

List of all members.

Public Member Functions
	StandardType (const Point *example=NULL)
	operator const data_type & () const
	operator data_type & ()
void	commit ()
void	free ()
Protected Attributes
data_type	_datatype

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Detailed Description

template<>
class libMesh::Parallel::StandardType< Point >

Definition at line 174 of file parallel_algebra.h.

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Constructor & Destructor Documentation

libMesh::Parallel::StandardType< Point >::StandardType

(

const Point *

example = NULL

)

[inline, explicit]

Definition at line 178 of file parallel_algebra.h.

References libMesh::Parallel::DataType::_datatype, libMesh::libMeshPrivateData::_is_initialized, libMesh::AutoPtr< Tp >::get(), and libMesh::AutoPtr< Tp >::reset().

                                            {
      // We need an example for MPI_Address to use
      Point *ex;
      AutoPtr<Point> temp;
      if (example)
        ex = const_cast<Point *>(example);
      else
        {
          temp.reset(new Point());
          ex = temp.get();
        }

      // _static_type never gets freed, but it only gets committed once
      // per T, so it's not a *huge* memory leak...
      static data_type _static_type;
      static bool _is_initialized = false;
      if (!_is_initialized)
        {
#ifdef LIBMESH_HAVE_MPI
          StandardType<Real> T_type(&((*ex)(0)));
          int blocklengths[LIBMESH_DIM+2];
          MPI_Aint displs[LIBMESH_DIM+2];
          MPI_Datatype types[LIBMESH_DIM+2];
          MPI_Aint start, later;

          MPI_Address(ex, &start);
          blocklengths[0] = 1;
          displs[0] = 0;
          types[0] = MPI_LB;
          for (unsigned int i=0; i != LIBMESH_DIM; ++i)
            {
              MPI_Address(&((*ex)(i)), &later);
              blocklengths[i+1] = 1;
              displs[i+1] = later - start;
              types[i+1] = T_type;
            }
          MPI_Address((ex+1), &later);
          blocklengths[LIBMESH_DIM+1] = 1;
          displs[LIBMESH_DIM+1] = later - start;
          types[LIBMESH_DIM+1] = MPI_UB;

#if MPI_VERSION > 1
          MPI_Type_create_struct (LIBMESH_DIM+2, blocklengths, displs, types, &_static_type);
#else
          MPI_Type_struct (LIBMESH_DIM+2, blocklengths, displs, types, &_static_type);
#endif // #if MPI_VERSION > 1

          MPI_Type_commit (&_static_type);
#endif
          _is_initialized = true;
        }
      _datatype = _static_type;
    }

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Member Function Documentation

void libMesh::Parallel::DataType::commit

(

)

[inline, inherited]

Definition at line 255 of file parallel.h.

References libMesh::Parallel::DataType::_datatype.

Referenced by libMesh::Parallel::DataType::DataType().

    {
#ifdef LIBMESH_HAVE_MPI
      MPI_Type_commit (&_datatype);
#endif
    }

void libMesh::Parallel::DataType::free

(

)

[inline, inherited]

Definition at line 262 of file parallel.h.

References libMesh::Parallel::DataType::_datatype.

Referenced by libMesh::Parallel::StandardType< std::complex< T > >::~StandardType(), libMesh::Parallel::StandardType< std::pair< T1, T2 > >::~StandardType(), libMesh::Parallel::StandardType< TensorValue< T > >::~StandardType(), and libMesh::Parallel::StandardType< TypeTensor< T > >::~StandardType().

    {
#ifdef LIBMESH_HAVE_MPI
      MPI_Type_free (&_datatype);
#endif
    }

libMesh::Parallel::DataType::operator const data_type &

(

)

const [inline, inherited]

Definition at line 243 of file parallel.h.

References libMesh::Parallel::DataType::_datatype.

    { return _datatype; }

libMesh::Parallel::DataType::operator data_type &

(

)

[inline, inherited]

Definition at line 246 of file parallel.h.

References libMesh::Parallel::DataType::_datatype.

    { return _datatype; }

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Member Data Documentation

data_type libMesh::Parallel::DataType::_datatype [protected, inherited]

Definition at line 271 of file parallel.h.

Referenced by libMesh::Parallel::DataType::commit(), libMesh::Parallel::DataType::DataType(), libMesh::Parallel::DataType::free(), libMesh::Parallel::DataType::operator const data_type &(), libMesh::Parallel::DataType::operator data_type &(), libMesh::Parallel::DataType::operator=(), libMesh::Parallel::StandardType< std::pair< T1, T2 > >::StandardType(), libMesh::Parallel::StandardType< Hilbert::HilbertIndices >::StandardType(), StandardType(), libMesh::Parallel::StandardType< VectorValue< T > >::StandardType(), and libMesh::Parallel::StandardType< TypeVector< T > >::StandardType().

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The documentation for this class was generated from the following file:

• parallel_algebra.h