/usr/include/dune/grid/alugrid/3d/lbdatahandle.hh is in libdune-grid-dev 2.4.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// vi: set et ts=4 sw=2 sts=2:
#ifndef DUNE_ALUGRID_LBDATAHANDLE_HH
#define DUNE_ALUGRID_LBDATAHANDLE_HH
#include <dune/grid/alugrid/3d/datahandle.hh>
#include <dune/grid/common/datahandleif.hh>
namespace Dune
{
template< class Grid, class DataHandleImpl, class Data >
class ALUGridLoadBalanceDataHandle
{
typedef typename Grid :: Traits :: HierarchicIterator HierarchicIterator;
public:
typedef typename Grid :: ObjectStreamType ObjectStream;
typedef CommDataHandleIF< DataHandleImpl, Data > DataHandle;
static const int dimension = Grid :: dimension;
template< int codim >
struct Codim
{
typedef typename Grid :: Traits :: template Codim< codim > :: Entity Entity;
typedef typename Grid :: Traits :: template Codim< codim > :: EntityPointer
EntityPointer;
};
typedef typename Codim< 0 > :: Entity Element;
private:
const Grid &grid_;
DataHandle &dataHandle_;
public:
ALUGridLoadBalanceDataHandle ( const Grid &grid, DataHandle &dataHandle )
: grid_( grid ),
dataHandle_( dataHandle )
{}
void inlineData ( ObjectStream &stream, const Element &element ) const
{
inlineElementData( stream, element );
const int maxLevel = grid_.maxLevel();
const HierarchicIterator end = element.hend( maxLevel );
for( HierarchicIterator it = element.hbegin( maxLevel ); it != end; ++it )
inlineElementData( stream, *it );
}
void xtractData ( ObjectStream &stream, const Element &element, size_t newElements )
{
xtractElementData( stream, element );
const int maxLevel = grid_.maxLevel();
const HierarchicIterator end = element.hend( maxLevel );
for( HierarchicIterator it = element.hbegin( maxLevel ); it != end; ++it )
xtractElementData( stream, *it );
}
void compress ()
{}
private:
void inlineElementData ( ObjectStream &stream, const Element &element ) const
{
// call element data direct without creating entity pointer
if( dataHandle_.contains( dimension, 0 ) )
{
inlineEntityData<0>( stream, element );
}
// now call all higher codims
inlineCodimData< 1 >( stream, element );
inlineCodimData< 2 >( stream, element );
inlineCodimData< 3 >( stream, element );
}
void xtractElementData ( ObjectStream &stream, const Element &element )
{
// call element data direct without creating entity pointer
if( dataHandle_.contains( dimension, 0 ) )
{
xtractEntityData<0>( stream, element );
}
// now call all higher codims
xtractCodimData< 1 >( stream, element );
xtractCodimData< 2 >( stream, element );
xtractCodimData< 3 >( stream, element );
}
template< int codim >
void inlineCodimData ( ObjectStream &stream, const Element &element ) const
{
typedef typename Codim< codim > :: EntityPointer EntityPointer;
if( dataHandle_.contains( dimension, codim ) )
{
const int numSubEntities = element.template count< codim >();
for( int i = 0; i < numSubEntities; ++i )
{
const EntityPointer pEntity = element.template subEntity< codim >( i );
inlineEntityData< codim >( stream, *pEntity );
}
}
}
template< int codim >
void xtractCodimData ( ObjectStream &stream, const Element &element )
{
typedef typename Codim< codim > :: EntityPointer EntityPointer;
if( dataHandle_.contains( dimension, codim ) )
{
const int numSubEntities = element.template count< codim >();
for( int i = 0; i < numSubEntities; ++i )
{
const EntityPointer pEntity = element.template subEntity< codim >( i );
xtractEntityData< codim >( stream, *pEntity );
}
}
}
template< int codim >
void inlineEntityData ( ObjectStream &stream,
const typename Codim< codim > :: Entity &entity ) const
{
const size_t size = dataHandle_.size( entity );
stream.write( size );
dataHandle_.gather( stream, entity );
}
template< int codim >
void xtractEntityData ( ObjectStream &stream,
const typename Codim< codim > :: Entity &entity )
{
size_t size = 0;
stream.read( size );
dataHandle_.scatter( stream, entity, size );
}
};
}
#endif
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