Public Types | |
typedef Type | element_type |
The pointed-to type. | |
Public Member Functions | |
auto_ptr (element_type *__p=0) throw () | |
An auto_ptr is usually constructed from a raw pointer. | |
auto_ptr (auto_ptr &a) throw () | |
An auto_ptr can be constructed from another auto_ptr. | |
template<typename Type1> | |
auto_ptr (auto_ptr< Type1 > &a) throw () | |
An auto_ptr can be constructed from another auto_ptr. | |
auto_ptr & | operator= (auto_ptr &a) throw () |
auto_ptr assignment operator. | |
template<typename Type1> | |
auto_ptr & | operator= (auto_ptr< Type1 > &a) throw () |
auto_ptr assignment operator. | |
~auto_ptr () | |
element_type & | operator * () const throw () |
Smart pointer dereferencing. | |
element_type * | operator-> () const throw () |
Smart pointer dereferencing. | |
element_type * | get () const throw () |
Bypassing the smart pointer. | |
element_type * | release () throw () |
Bypassing the smart pointer. | |
void | reset (element_type *__p=0) throw () |
Forcibly deletes the managed object. | |
auto_ptr (auto_ptr_ref< element_type > __ref) throw () | |
Automatic conversions. | |
auto_ptr & | operator= (auto_ptr_ref< element_type > __ref) throw () |
Automatic conversions. | |
template<typename Type1> | |
operator auto_ptr_ref () throw () | |
Automatic conversions. | |
template<typename Type1> | |
operator auto_ptr () throw () | |
Automatic conversions. | |
Private Attributes | |
Type * | M_ptr |
The Standard says:
Anauto_ptr
owns the object it holds a pointer to. Copying anauto_ptr
copies the pointer and transfers ownership to the destination. If more than oneauto_ptr
owns the same object at the same time the behavior of the program is undefined.
The uses ofQuoted from [20.4.5]/3.auto_ptr
include providing temporary exception-safety for dynamically allocated memory, passing ownership of dynamically allocated memory to a function, and returning dynamically allocated memory from a function.auto_ptr
does not meet the CopyConstructible and Assignable requirements for Standard Library container elements and thus instantiating a Standard Library container with anauto_ptr
results in undefined behavior.
Good examples of what can and cannot be done with auto_ptr can be found in the libstdc++ testsuite.
Definition at line 175 of file memory.
typedef Type std::auto_ptr< Type >::element_type |
std::auto_ptr< Type >::auto_ptr | ( | element_type * | __p = 0 |
) | throw () [inline, explicit] |
std::auto_ptr< Type >::auto_ptr | ( | auto_ptr< Type > & | a | ) | throw () [inline] |
std::auto_ptr< Type >::auto_ptr | ( | auto_ptr< Type1 > & | a | ) | throw () [inline] |
An auto_ptr can be constructed from another auto_ptr.
a | Another auto_ptr of a different but related type. |
This object now owns the object previously owned by a, which has given up ownsership.
std::auto_ptr< Type >::~auto_ptr | ( | ) | [inline] |
std::auto_ptr< Type >::auto_ptr | ( | auto_ptr_ref< element_type > | __ref | ) | throw () [inline] |
Automatic conversions.
These operations convert an auto_ptr into and from an auto_ptr_ref automatically as needed. This allows constructs such as
auto_ptr<Derived> func_returning_auto_ptr(.....); ... auto_ptr<Base> ptr = func_returning_auto_ptr(.....);
element_type* std::auto_ptr< Type >::get | ( | void | ) | const throw () [inline] |
element_type& std::auto_ptr< Type >::operator * | ( | ) | const throw () [inline] |
std::auto_ptr< Type >::operator auto_ptr | ( | ) | throw () [inline] |
Automatic conversions.
These operations convert an auto_ptr into and from an auto_ptr_ref automatically as needed. This allows constructs such as
auto_ptr<Derived> func_returning_auto_ptr(.....); ... auto_ptr<Base> ptr = func_returning_auto_ptr(.....);
Definition at line 369 of file memory.
References std::auto_ptr< Type >::release().
std::auto_ptr< Type >::operator auto_ptr_ref | ( | ) | throw () [inline] |
Automatic conversions.
These operations convert an auto_ptr into and from an auto_ptr_ref automatically as needed. This allows constructs such as
auto_ptr<Derived> func_returning_auto_ptr(.....); ... auto_ptr<Base> ptr = func_returning_auto_ptr(.....);
Definition at line 365 of file memory.
References std::auto_ptr< Type >::release().
element_type* std::auto_ptr< Type >::operator-> | ( | ) | const throw () [inline] |
auto_ptr& std::auto_ptr< Type >::operator= | ( | auto_ptr_ref< element_type > | __ref | ) | throw () [inline] |
Automatic conversions.
These operations convert an auto_ptr into and from an auto_ptr_ref automatically as needed. This allows constructs such as
auto_ptr<Derived> func_returning_auto_ptr(.....); ... auto_ptr<Base> ptr = func_returning_auto_ptr(.....);
auto_ptr& std::auto_ptr< Type >::operator= | ( | auto_ptr< Type1 > & | a | ) | throw () [inline] |
auto_ptr assignment operator.
a | Another auto_ptr of a different but related type. |
This object now owns the object previously owned by a, which has given up ownsership. The object that this one used to own and track has been deleted.
Definition at line 242 of file memory.
References std::auto_ptr< Type >::release(), and std::auto_ptr< Type >::reset().
auto_ptr& std::auto_ptr< Type >::operator= | ( | auto_ptr< Type > & | a | ) | throw () [inline] |
auto_ptr assignment operator.
a | Another auto_ptr of the same type. |
Definition at line 224 of file memory.
References std::auto_ptr< Type >::release(), and std::auto_ptr< Type >::reset().
element_type* std::auto_ptr< Type >::release | ( | ) | throw () [inline] |
Bypassing the smart pointer.
Definition at line 315 of file memory.
Referenced by std::auto_ptr< Type >::operator auto_ptr(), std::auto_ptr< Type >::operator auto_ptr_ref(), and std::auto_ptr< Type >::operator=().
void std::auto_ptr< Type >::reset | ( | element_type * | __p = 0 |
) | throw () [inline] |
Forcibly deletes the managed object.
p | A pointer (defaults to NULL). |
Definition at line 330 of file memory.
Referenced by std::auto_ptr< Type >::operator=().