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std::allocator_traits< _Alloc >(3cxx) std::allocator_traits< _Alloc >(3cxx)

NAME

std::allocator_traits< _Alloc > -

SYNOPSIS

Inherited by __gnu_cxx::__alloc_traits< _Alloc >.

Public Types


typedef _Alloc allocator_type
 
typedef __const_pointer const_pointer
 
typedef __const_void_pointer const_void_pointer
 
typedef __difference_type difference_type
 
typedef __pointer pointer
 
typedef
 
__propagate_on_container_copy_assignment propagate_on_container_copy_assignment"
 
typedef
 
__propagate_on_container_move_assignment propagate_on_container_move_assignment"
 
typedef
 
__propagate_on_container_swap propagate_on_container_swap"
 
template<typename _Tp > using rebind_alloc = typename __alloctr_rebind< _Alloc, _Tp >::__type
 
template<typename _Tp > using rebind_traits = allocator_traits< rebind_alloc< _Tp >>
 
typedef __size_type size_type
 
typedef _Alloc::value_type value_type
 
typedef __void_pointer void_pointer
 

Static Public Member Functions


static pointer allocate (_Alloc &__a, size_type __n)
 
static pointer allocate (_Alloc &__a, size_type __n, const_void_pointer __hint)
 
template<typename _Tp , typename... _Args> static void construct (_Alloc &__a, _Tp *__p, _Args &&...__args)
 
static void deallocate (_Alloc &__a, pointer __p, size_type __n)
 
template<class _Tp > static void destroy (_Alloc &__a, _Tp *__p)
 
static size_type max_size (const _Alloc &__a)
 
static _Alloc select_on_container_copy_construction (const _Alloc &__rhs)
 

Detailed Description

 

template<typename _Alloc>struct std::allocator_traits< _Alloc >

Uniform interface to all allocator types.
Definition at line 84 of file bits/alloc_traits.h.

Member Typedef Documentation

template<typename _Alloc> typedef _Alloc std::allocator_traits< _Alloc >:: allocator_type

The allocator type.
Definition at line 87 of file bits/alloc_traits.h.

template<typename _Alloc> typedef __const_pointer std::allocator_traits< _Alloc >:: const_pointer

The allocator's const pointer type. Alloc::const_pointer if that type exists, otherwise pointer_traits<pointer>::rebind<const value_type>
Definition at line 117 of file bits/alloc_traits.h.

template<typename _Alloc> typedef __const_void_pointer std::allocator_traits< _Alloc >:: const_void_pointer

The allocator's const void pointer type. Alloc::const_void_pointer if that type exists, otherwise pointer_traits<pointer>::rebind<const void>
Definition at line 139 of file bits/alloc_traits.h.

template<typename _Alloc> typedef __difference_type std::allocator_traits< _Alloc >:: difference_type

The allocator's difference type. Alloc::difference_type if that type exists, otherwise pointer_traits<pointer>::difference_type
Definition at line 150 of file bits/alloc_traits.h.

template<typename _Alloc> typedef __pointer std::allocator_traits< _Alloc >:: pointer

The allocator's pointer type. Alloc::pointer if that type exists, otherwise value_type*
Definition at line 106 of file bits/alloc_traits.h.

template<typename _Alloc> typedef __propagate_on_container_copy_assignment std::allocator_traits< _Alloc >:: propagate_on_container_copy_assignment

How the allocator is propagated on copy assignment. Alloc::propagate_on_container_copy_assignment if that type exists, otherwise false_type
Definition at line 173 of file bits/alloc_traits.h.

template<typename _Alloc> typedef __propagate_on_container_move_assignment std::allocator_traits< _Alloc >:: propagate_on_container_move_assignment

How the allocator is propagated on move assignment. Alloc::propagate_on_container_move_assignment if that type exists, otherwise false_type
Definition at line 185 of file bits/alloc_traits.h.

template<typename _Alloc> typedef __propagate_on_container_swap std::allocator_traits< _Alloc >::propagate_on_container_swap

How the allocator is propagated on swap. Alloc::propagate_on_container_swap if that type exists, otherwise false_type
Definition at line 196 of file bits/alloc_traits.h.

template<typename _Alloc> typedef __size_type std::allocator_traits< _Alloc >:: size_type

The allocator's size type. Alloc::size_type if that type exists, otherwise make_unsigned<difference_type>::type
Definition at line 161 of file bits/alloc_traits.h.

template<typename _Alloc> typedef _Alloc::value_type std::allocator_traits< _Alloc >:: value_type

The allocated type.
Definition at line 89 of file bits/alloc_traits.h.

template<typename _Alloc> typedef __void_pointer std::allocator_traits< _Alloc >:: void_pointer

The allocator's void pointer type. Alloc::void_pointer if that type exists, otherwise pointer_traits<pointer>::rebind<void>
Definition at line 128 of file bits/alloc_traits.h.

Member Function Documentation

template<typename _Alloc> static pointer std::allocator_traits< _Alloc >::allocate (_Alloc &__a, size_type__n) [inline], [static]

Allocate memory. Parameters:
__a An allocator.
 
__n The number of objects to allocate space for.
Calls a.allocate(n)
Definition at line 348 of file bits/alloc_traits.h.

template<typename _Alloc> static pointer std::allocator_traits< _Alloc >::allocate (_Alloc &__a, size_type__n, const_void_pointer__hint) [inline], [static]

Allocate memory. Parameters:
__a An allocator.
 
__n The number of objects to allocate space for.
 
__hint Aid to locality.
Returns:
Memory of suitable size and alignment for n objects of type value_type
Returns a.allocate(n, hint) if that expression is well-formed, otherwise returns a.allocate(n)
Definition at line 363 of file bits/alloc_traits.h.

template<typename _Alloc> template<typename _Tp , typename... _Args> static void std::allocator_traits< _Alloc >::construct (_Alloc &__a, _Tp *__p, _Args &&...__args) [inline], [static]

Construct an object of type _Tp. Parameters:
__a An allocator.
 
__p Pointer to memory of suitable size and alignment for Tp
 
__args Constructor arguments.
Calls __a.construct(__p, std::forward<Args>(__args)...) if that expression is well-formed, otherwise uses placement-new to construct an object of type _Tp at location __p from the arguments __args...
Definition at line 389 of file bits/alloc_traits.h.

template<typename _Alloc> static void std::allocator_traits< _Alloc >::deallocate (_Alloc &__a, pointer__p, size_type__n) [inline], [static]

Deallocate memory. Parameters:
__a An allocator.
 
__p Pointer to the memory to deallocate.
 
__n The number of objects space was allocated for.
Calls a.deallocate(p, n)
Definition at line 374 of file bits/alloc_traits.h.

template<typename _Alloc> template<class _Tp > static void std::allocator_traits< _Alloc >::destroy (_Alloc &__a, _Tp *__p) [inline], [static]

Destroy an object of type _Tp. Parameters:
__a An allocator.
 
__p Pointer to the object to destroy
Calls __a.destroy(__p) if that expression is well-formed, otherwise calls __p->~_Tp()
Definition at line 401 of file bits/alloc_traits.h.

template<typename _Alloc> static size_type std::allocator_traits< _Alloc >::max_size (const _Alloc &__a) [inline], [static]

The maximum supported allocation size. Parameters:
__a An allocator.
Returns:
__a.max_size() or numeric_limits<size_type>::max()
Returns __a.max_size() if that expression is well-formed, otherwise returns numeric_limits<size_type>::max()
Definition at line 412 of file bits/alloc_traits.h.

template<typename _Alloc> static _Alloc std::allocator_traits< _Alloc >::select_on_container_copy_construction (const _Alloc &__rhs) [inline], [static]

Obtain an allocator to use when copying a container. Parameters:
__rhs An allocator.
Returns:
__rhs.select_on_container_copy_construction() or __rhs
Returns __rhs.select_on_container_copy_construction() if that expression is well-formed, otherwise returns __rhs
Definition at line 424 of file bits/alloc_traits.h.
 

Author

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Sun Jan 6 2013 libstdc++