libstdc++
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Inherits std::__shared_ptr< _Tp, _Lp >.
Public Member Functions | |
constexpr | shared_ptr () noexcept |
shared_ptr (const shared_ptr &) noexcept | |
template<typename _Yp , typename = _Constructible<_Yp*>> | |
shared_ptr (_Yp *__p) | |
template<typename _Yp , typename _Deleter , typename = _Constructible<_Yp*, _Deleter>> | |
shared_ptr (_Yp *__p, _Deleter __d) | |
template<typename _Deleter > | |
shared_ptr (nullptr_t __p, _Deleter __d) | |
template<typename _Yp , typename _Deleter , typename _Alloc , typename = _Constructible<_Yp*, _Deleter, _Alloc>> | |
shared_ptr (_Yp *__p, _Deleter __d, _Alloc __a) | |
template<typename _Deleter , typename _Alloc > | |
shared_ptr (nullptr_t __p, _Deleter __d, _Alloc __a) | |
template<typename _Yp > | |
shared_ptr (const shared_ptr< _Yp > &__r, element_type *__p) noexcept | |
template<typename _Yp , typename = _Constructible<const shared_ptr<_Yp>&>> | |
shared_ptr (const shared_ptr< _Yp > &__r) noexcept | |
shared_ptr (shared_ptr &&__r) noexcept | |
template<typename _Yp , typename = _Constructible<shared_ptr<_Yp>>> | |
shared_ptr (shared_ptr< _Yp > &&__r) noexcept | |
template<typename _Yp , typename = _Constructible<const weak_ptr<_Yp>&>> | |
shared_ptr (const weak_ptr< _Yp > &__r) | |
template<typename _Yp , typename _Del , typename = _Constructible<unique_ptr<_Yp, _Del>>> | |
shared_ptr (unique_ptr< _Yp, _Del > &&__r) | |
constexpr | shared_ptr (nullptr_t) noexcept |
template<typename _Tp1 , typename > | |
shared_ptr (std::auto_ptr< _Tp1 > &&__r) | |
element_type * | get () const noexcept |
operator bool () const | |
element_type & | operator* () const noexcept |
element_type * | operator-> () const noexcept |
shared_ptr & | operator= (const shared_ptr &) noexcept |
template<typename _Yp > | |
_Assignable< const shared_ptr < _Yp > & > | operator= (const shared_ptr< _Yp > &__r) noexcept |
shared_ptr & | operator= (shared_ptr &&__r) noexcept |
template<class _Yp > | |
_Assignable< shared_ptr< _Yp > > | operator= (shared_ptr< _Yp > &&__r) noexcept |
template<typename _Yp , typename _Del > | |
_Assignable< unique_ptr< _Yp, _Del > > | operator= (unique_ptr< _Yp, _Del > &&__r) |
template<typename _Tp1 > | |
bool | owner_before (__shared_ptr< _Tp1, _Lp > const &__rhs) const noexcept |
template<typename _Tp1 > | |
bool | owner_before (__weak_ptr< _Tp1, _Lp > const &__rhs) const noexcept |
void | reset () noexcept |
template<typename _Yp > | |
_SafeConv< _Yp > | reset (_Yp *__p) |
template<typename _Yp , typename _Deleter > | |
_SafeConv< _Yp > | reset (_Yp *__p, _Deleter __d) |
template<typename _Yp , typename _Deleter , typename _Alloc > | |
_SafeConv< _Yp > | reset (_Yp *__p, _Deleter __d, _Alloc __a) |
void | swap (__shared_ptr< _Tp, _Lp > &__other) noexcept |
bool | unique () const noexcept |
long | use_count () const noexcept |
Friends | |
template<typename _Tp1 , _Lock_policy _Lp1, typename _Alloc , typename... _Args> | |
__shared_ptr< _Tp1, _Lp1 > | __allocate_shared (const _Alloc &__a, _Args &&...__args) |
class | __weak_ptr< _Tp, _Lp > |
template<typename _Yp , typename _Alloc , typename... _Args> | |
shared_ptr< _Yp > | allocate_shared (const _Alloc &__a, _Args &&...__args) |
class | weak_ptr< _Tp > |
A smart pointer with reference-counted copy semantics.
The object pointed to is deleted when the last shared_ptr pointing to it is destroyed or reset.
Definition at line 103 of file bits/shared_ptr.h.
constexpr std::shared_ptr< _Tp >::shared_ptr | ( | ) | [inline] |
Construct an empty shared_ptr.
Definition at line 127 of file bits/shared_ptr.h.
std::shared_ptr< _Tp >::shared_ptr | ( | _Yp * | __p | ) | [inline, explicit] |
Construct a shared_ptr that owns the pointer __p.
__p | A pointer that is convertible to element_type*. |
std::bad_alloc,in | which case delete __p is called. |
Definition at line 139 of file bits/shared_ptr.h.
std::shared_ptr< _Tp >::shared_ptr | ( | _Yp * | __p, |
_Deleter | __d | ||
) | [inline] |
Construct a shared_ptr that owns the pointer __p and the deleter __d.
__p | A pointer. |
__d | A deleter. |
std::bad_alloc,in | which case __d(__p) is called. |
Requirements: _Deleter's copy constructor and destructor must not throw
__shared_ptr will release __p by calling __d(__p)
Definition at line 156 of file bits/shared_ptr.h.
std::shared_ptr< _Tp >::shared_ptr | ( | nullptr_t | __p, |
_Deleter | __d | ||
) | [inline] |
Construct a shared_ptr that owns a null pointer and the deleter __d.
__p | A null pointer constant. |
__d | A deleter. |
std::bad_alloc,in | which case __d(__p) is called. |
Requirements: _Deleter's copy constructor and destructor must not throw
The last owner will call __d(__p)
Definition at line 173 of file bits/shared_ptr.h.
std::shared_ptr< _Tp >::shared_ptr | ( | _Yp * | __p, |
_Deleter | __d, | ||
_Alloc | __a | ||
) | [inline] |
Construct a shared_ptr that owns the pointer __p and the deleter __d.
__p | A pointer. |
__d | A deleter. |
__a | An allocator. |
std::bad_alloc,in | which case __d(__p) is called. |
Requirements: _Deleter's copy constructor and destructor must not throw _Alloc's copy constructor and destructor must not throw.
__shared_ptr will release __p by calling __d(__p)
Definition at line 193 of file bits/shared_ptr.h.
std::shared_ptr< _Tp >::shared_ptr | ( | nullptr_t | __p, |
_Deleter | __d, | ||
_Alloc | __a | ||
) | [inline] |
Construct a shared_ptr that owns a null pointer and the deleter __d.
__p | A null pointer constant. |
__d | A deleter. |
__a | An allocator. |
std::bad_alloc,in | which case __d(__p) is called. |
Requirements: _Deleter's copy constructor and destructor must not throw _Alloc's copy constructor and destructor must not throw.
The last owner will call __d(__p)
Definition at line 212 of file bits/shared_ptr.h.
std::shared_ptr< _Tp >::shared_ptr | ( | const shared_ptr< _Yp > & | __r, |
element_type * | __p | ||
) | [inline] |
Constructs a shared_ptr instance that stores __p and shares ownership with __r.
__r | A shared_ptr. |
__p | A pointer that will remain valid while *__r is valid. |
This can be used to construct a shared_ptr
to a sub-object of an object managed by an existing shared_ptr
.
shared_ptr< pair<int,int> > pii(new pair<int,int>());
shared_ptr<int> pi(pii, &pii->first);
assert(pii.use_count() == 2);
Definition at line 234 of file bits/shared_ptr.h.
std::shared_ptr< _Tp >::shared_ptr | ( | const shared_ptr< _Yp > & | __r | ) | [inline] |
If __r is empty, constructs an empty shared_ptr; otherwise construct a shared_ptr that shares ownership with __r.
__r | A shared_ptr. |
Definition at line 246 of file bits/shared_ptr.h.
std::shared_ptr< _Tp >::shared_ptr | ( | shared_ptr< _Tp > && | __r | ) | [inline] |
Move-constructs a shared_ptr instance from __r.
__r | A shared_ptr rvalue. |
Definition at line 254 of file bits/shared_ptr.h.
std::shared_ptr< _Tp >::shared_ptr | ( | shared_ptr< _Yp > && | __r | ) | [inline] |
Move-constructs a shared_ptr instance from __r.
__r | A shared_ptr rvalue. |
Definition at line 263 of file bits/shared_ptr.h.
std::shared_ptr< _Tp >::shared_ptr | ( | const weak_ptr< _Yp > & | __r | ) | [inline, explicit] |
Constructs a shared_ptr that shares ownership with __r and stores a copy of the pointer stored in __r.
__r | A weak_ptr. |
bad_weak_ptr | when __r.expired(), in which case the constructor has no effect. |
Definition at line 275 of file bits/shared_ptr.h.
constexpr std::shared_ptr< _Tp >::shared_ptr | ( | nullptr_t | ) | [inline] |
Construct an empty shared_ptr.
Definition at line 307 of file bits/shared_ptr.h.
shared_ptr<_Yp> allocate_shared | ( | const _Alloc & | __a, |
_Args &&... | __args | ||
) | [friend] |
Create an object that is owned by a shared_ptr.
__a | An allocator. |
__args | Arguments for the _Tp object's constructor. |
An | exception thrown from _Alloc::allocate or from the constructor of _Tp. |
A copy of __a will be used to allocate memory for the shared_ptr and the new object.
Definition at line 703 of file bits/shared_ptr.h.