Dune::null_deleter< T > Struct Template Reference

implements the Deleter concept of shared_ptr without deleting anything More...

#include <dune/common/shared_ptr.hh>

Public Member Functions
void	operator() (T *) const

Related Symbols
(Note that these are not member symbols.)
template<typename T >
std::shared_ptr< T >	stackobject_to_shared_ptr (T &t)
	Create a shared_ptr for a stack-allocated object.

Detailed Description

template<class T>
struct Dune::null_deleter< T >

implements the Deleter concept of shared_ptr without deleting anything

If you allocate an object on the stack, but want to pass it to a class or function as a shared_ptr, you can use this deleter to avoid accidental deletion of the stack-allocated object.

For convenience we provide two free functions to create a shared_ptr from a stack-allocated object (

See also

stackobject_to_shared_ptr):

1) Convert a stack-allocated object to a shared_ptr:

int i = 10;
std::shared_ptr<int> pi = stackobject_to_shared_ptr(i);

2) Convert a stack-allocated object to a std::shared_ptr of a base class

class A {};
class B : public A {};
 
...
 
B b;
std::shared_ptr<A> pa = stackobject_to_shared_ptr<A>(b);

Template Parameters

T	type of the stack-allocated object

Member Function Documentation

operator()()

template<class T >

void Dune::null_deleter< T >::operator() ( T *  ) const

inline

Friends And Related Symbol Documentation

stackobject_to_shared_ptr()

template<typename T >

std::shared_ptr< T > stackobject_to_shared_ptr ( T &  t )

related

Create a shared_ptr for a stack-allocated object.

#include <dune/common/shared_ptr.hh>

Usage:

int i = 10;
std::shared_ptr<int> pi = stackobject_to_shared_ptr(i);

The std::shared_ptr points to the object on the stack, but its deleter is set to an instance of null_deleter so that nothing happens when the shared_ptr is destroyed.

See also

null_deleter

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

• shared_ptr.hh