/usr/include/dune/grid/alugrid/common/memory.hh is in libdune-grid-dev 2.3.1-1.
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_ALU3DGRIDMEMORY_HH
#define DUNE_ALU3DGRIDMEMORY_HH
#include <cassert>
#include <cstdlib>
#include <vector>
namespace ALUGridSpace
{
template<class T, int length>
class ALUGridFiniteStack ;
}
namespace Dune {
//! organize the memory management for entitys used by the NeighborIterator
template <class Object>
class ALUMemoryProvider
{
enum { maxStackObjects = 256 };
typedef ALUGridSpace :: ALUGridFiniteStack< Object* , maxStackObjects > StackType ;
StackType objStack_ ;
typedef ALUMemoryProvider < Object > MyType;
StackType& objStack() { return objStack_ ; }
public:
typedef Object ObjectType;
//!default constructor
ALUMemoryProvider() {}
//! do not copy pointers
ALUMemoryProvider(const ALUMemoryProvider<Object> & org)
: objStack_( org.objStack_ )
{}
//! call deleteEntity
~ALUMemoryProvider ();
//! i.e. return pointer to Entity
template <class FactoryType>
ObjectType * getObject(const FactoryType &factory, int level);
//! i.e. return pointer to Entity
template <class FactoryType, class EntityImp>
inline ObjectType * getEntityObject(const FactoryType& factory, int level , EntityImp * fakePtr )
{
if( objStack().empty() )
{
return ( new ObjectType(EntityImp(factory,level) ));
}
else
{
return stackObject();
}
}
//! return object, if created default constructor is used
ObjectType * getEmptyObject ();
//! i.e. return pointer to Entity
ObjectType * getObjectCopy(const ObjectType & org);
//! free, move element to stack, returns NULL
void freeObject (ObjectType * obj);
protected:
inline ObjectType * stackObject()
{
assert( ! objStack().empty() );
// finite stack does also return object on pop
return objStack().pop();
}
};
//************************************************************************
//
// ALUMemoryProvider implementation
//
//************************************************************************
template <class Object> template <class FactoryType>
inline typename ALUMemoryProvider<Object>::ObjectType *
ALUMemoryProvider<Object>::getObject
(const FactoryType &factory, int level )
{
if( objStack().empty() )
{
return ( new Object (factory, level) );
}
else
{
return stackObject();
}
}
template <class Object>
inline typename ALUMemoryProvider<Object>::ObjectType *
ALUMemoryProvider<Object>::getObjectCopy
(const ObjectType & org )
{
if( objStack().empty() )
{
return ( new Object (org) );
}
else
{
return stackObject();
}
}
template <class Object>
inline typename ALUMemoryProvider<Object>::ObjectType *
ALUMemoryProvider<Object>::getEmptyObject ()
{
if( objStack().empty() )
{
return new Object () ;
}
else
{
return stackObject();
}
}
template <class Object>
inline ALUMemoryProvider<Object>::~ALUMemoryProvider()
{
StackType& objStk = objStack_;
while ( ! objStk.empty() )
{
ObjectType * obj = objStk.pop();
delete obj;
}
}
template <class Object>
inline void ALUMemoryProvider<Object>::freeObject(Object * obj)
{
StackType& stk = objStack();
if( stk.full() )
delete obj;
else
stk.push( obj );
}
#undef USE_FINITE_STACK
} // end namespace Dune
#endif
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