__gnu_cxx::__alloc_traits< _Alloc >(3)

NAME
__gnu_cxx::__alloc_traits< _Alloc > -

SYNOPSIS

Inherits std::allocator_traits< _Alloc >.

  Public Types
typedef std::allocator_traits
< _Alloc > _Base_type"
typedef _Alloc allocator_type
typedef _Base_type::const_pointer const_pointer
typedef const value_type & const_reference
typedef __const_void_pointer const_void_pointer
typedef _Base_type::difference_type difference_type
typedef _Base_type::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 value_type & reference
typedef _Base_type::size_type size_type
typedef _Base_type::value_type value_type
typedef __void_pointer void_pointer

  Static Public Member Functions
static constexpr bool _S_always_equal ()
static constexpr bool _S_nothrow_move ()
static constexpr bool _S_nothrow_swap ()
static void _S_on_swap (_Alloc &__a, _Alloc &__b)
static constexpr bool _S_propagate_on_copy_assign ()
static constexpr bool _S_propagate_on_move_assign ()
static constexpr bool _S_propagate_on_swap ()
static _Alloc _S_select_on_copy (const _Alloc &__a)
static pointer allocate (_Alloc &__a, size_type __n)
static pointer allocate (_Alloc &__a, size_type __n, const_void_pointer __hint)
template<typename _Ptr , typename... _Args> static std::enable_if
< __is_custom_pointer< _Ptr >
::value >::type construct (_Alloc &__a, _Ptr __p, _Args &&...__args)"
template<typename _Tp , typename... _Args> static auto construct (_Alloc &__a, _Tp *__p, _Args &&...__args) -> decltype(_S_construct(__a, __p, std::forward< _Args >(__args)...))
static void deallocate (_Alloc &__a, pointer __p, size_type __n)
template<typename _Ptr > static std::enable_if
< __is_custom_pointer< _Ptr >
::value >::type destroy (_Alloc &__a, _Ptr __p)"
template<class _Tp > static void destroy (_Alloc &__a, _Tp *__p)
static size_type max_size (const _Alloc &__a) noexcept
static _Alloc select_on_container_copy_construction (const _Alloc &__rhs)

Detailed Description

  template<typename _Alloc>struct __gnu_cxx::__alloc_traits< _Alloc >
Uniform interface to C++98 and C++0x allocators.

Definition at line 95 of file ext/alloc_traits.h.

Member Typedef Documentation

  template<typename _Alloc> typedef __const_void_pointer std::allocator_traits< _Alloc >::const_void_pointer [inherited]

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 135 of file bits/alloc_traits.h.

  template<typename _Alloc> typedef __propagate_on_container_copy_assignment std::allocator_traits< _Alloc >::propagate_on_container_copy_assignment [inherited]

How the allocator is propagated on copy assignment. Alloc::propagate_on_container_copy_assignment if that type exists, otherwise false_type

Definition at line 169 of file bits/alloc_traits.h.

  template<typename _Alloc> typedef __propagate_on_container_move_assignment std::allocator_traits< _Alloc >::propagate_on_container_move_assignment [inherited]

How the allocator is propagated on move assignment. Alloc::propagate_on_container_move_assignment if that type exists, otherwise false_type

Definition at line 181 of file bits/alloc_traits.h.

  template<typename _Alloc> typedef __propagate_on_container_swap std::allocator_traits< _Alloc >::propagate_on_container_swap [inherited]

How the allocator is propagated on swap. Alloc::propagate_on_container_swap if that type exists, otherwise false_type

Definition at line 192 of file bits/alloc_traits.h.

  template<typename _Alloc> typedef __void_pointer std::allocator_traits< _Alloc >::void_pointer [inherited]

The allocator's void pointer type. Alloc::void_pointer if that type exists, otherwise pointer_traits<pointer>::rebind<void>

Definition at line 124 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], [inherited]

Allocate memory.

Parameters:
    __a An allocator.
    __n The number of objects to allocate space for.

Calls a.allocate(n)

Definition at line 356 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], [inherited]

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 371 of file bits/alloc_traits.h.

  template<typename _Alloc> template<typename _Tp , typename... _Args> static auto std::allocator_traits< _Alloc >::construct (_Alloc &__a, _Tp *__p, _Args &&...__args) -> decltype(_S_construct(__a, __p, std::forward<_Args>(__args)...))
     [inline], [static], [inherited]"

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 397 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], [inherited]

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 382 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], [inherited]

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 410 of file bits/alloc_traits.h.

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

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 421 of file bits/alloc_traits.h.

Referenced by std::forward_list< _Tp, _Alloc >::max_size().

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

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 433 of file bits/alloc_traits.h.

Author

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