libstdc++: std::allocator_traits< allocator< _Tp > (original) (raw)

#include <[memory](a00140%5Fsource.html)>

Public Types
using	allocator_type = allocator< _Tp >

using	const_pointer = const _Tp *

using	const_void_pointer = const void *

using	difference_type = std::ptrdiff_t

using	is_always_equal = true_type

using	pointer = _Tp *

using	propagate_on_container_copy_assignment = false_type

using	propagate_on_container_move_assignment = true_type

using	propagate_on_container_swap = false_type

template<typename _Up >
using	rebind_alloc = allocator< _Up >

template<typename _Up >
using	rebind_traits = allocator_traits< allocator< _Up > >

using	size_type = std::size_t

using	value_type = _Tp

using	void_pointer = void *

Static Public Member Functions
static constexpr pointer	allocate (allocator_type &__a, size_type __n)

static constexpr pointer	allocate (allocator_type &__a, size_type __n, const_void_pointer __hint)

template<typename _Up , typename... _Args>
static constexpr void	construct (allocator_type &__a, _Up *__p, _Args &&... __args) noexcept(__is_nothrow_new_constructible< _Up, _Args... >)

static constexpr void	deallocate (allocator_type &__a, pointer __p, size_type __n)

template<typename _Up >
static constexpr void	destroy (allocator_type &__a, _Up *__p) noexcept(is_nothrow_destructible< _Up >::value)

static constexpr size_type	max_size (const allocator_type &__a) noexcept

static constexpr allocator_type	select_on_container_copy_construction (const allocator_type &__rhs)

template<typename _Tp>
struct std::allocator_traits< allocator< _Tp > >

Partial specialization for std::allocator

Since

C++11

◆ allocator_type

◆ const_pointer

◆ const_void_pointer

◆ difference_type

◆ is_always_equal

Whether all instances of the allocator type compare equal.

Definition at line 596 of file bits/alloc_traits.h.

◆ pointer

◆ propagate_on_container_copy_assignment

◆ propagate_on_container_move_assignment

◆ propagate_on_container_swap

◆ rebind_alloc

template<typename _Tp >

template<typename _Up >

◆ rebind_traits

template<typename _Tp >

template<typename _Up >

◆ size_type

◆ value_type

◆ void_pointer

◆ allocate() [1/2]

Allocate memory.

Parameters

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

Calls a.allocate(n)

Definition at line 613 of file bits/alloc_traits.h.

◆ allocate() [2/2]

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)

Definition at line 628 of file bits/alloc_traits.h.

◆ construct()

template<typename _Tp >

template<typename _Up , typename... _Args>

Construct an object of type _Up

Parameters

__a	An allocator.
__p	Pointer to memory of suitable size and alignment for an object of type _Up.
__args	Constructor arguments.

Calls __a.construct(__p, std::forward<_Args>(__args)...) in C++11, C++14 and C++17. Changed in C++20 to call std::construct_at(__p, std::forward<_Args>(__args)...) instead.

Definition at line 665 of file bits/alloc_traits.h.

References std::_Construct().

◆ deallocate()

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 648 of file bits/alloc_traits.h.

◆ destroy()

template<typename _Tp >

template<typename _Up >

Destroy an object of type _Up.

Parameters

__a	An allocator.
__p	Pointer to the object to destroy

Calls __a.destroy(__p).

Definition at line 692 of file bits/alloc_traits.h.

◆ max_size()

The maximum supported allocation size.

Parameters

Returns

__a.max_size()

Definition at line 709 of file bits/alloc_traits.h.

◆ select_on_container_copy_construction()

Obtain an allocator to use when copying a container.

Parameters

Returns

__rhs

Definition at line 725 of file bits/alloc_traits.h.

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

bits/alloc_traits.h