#include <memory>

Public Types
using	allocator_type
using	const_pointer
using	const_void_pointer
using	difference_type
using	is_always_equal
using	pointer
using	propagate_on_container_copy_assignment
using	propagate_on_container_move_assignment
using	propagate_on_container_swap
template<typename _Up>
using	rebind_alloc
template<typename _Up>
using	rebind_traits
using	size_type
using	value_type
using	void_pointer

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)

Detailed Description

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

Partial specialization for std::allocator

Since: C++11

See also: std::allocator_traits

Definition at line 560 of file bits/alloc_traits.h.

Member Typedef Documentation

◆ allocator_type

template<typename _Tp>

using std::allocator_traits< allocator< _Tp > >::allocator_type

The allocator type.

Definition at line 563 of file bits/alloc_traits.h.

◆ const_pointer

template<typename _Tp>

using std::allocator_traits< allocator< _Tp > >::const_pointer

The allocator's const pointer type.

Definition at line 572 of file bits/alloc_traits.h.

◆ const_void_pointer

template<typename _Tp>

using std::allocator_traits< allocator< _Tp > >::const_void_pointer

The allocator's const void pointer type.

Definition at line 578 of file bits/alloc_traits.h.

◆ difference_type

template<typename _Tp>

using std::allocator_traits< allocator< _Tp > >::difference_type

The allocator's difference type.

Definition at line 581 of file bits/alloc_traits.h.

◆ is_always_equal

template<typename _Tp>

using std::allocator_traits< allocator< _Tp > >::is_always_equal

Whether all instances of the allocator type compare equal.

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

◆ pointer

template<typename _Tp>

using std::allocator_traits< allocator< _Tp > >::pointer

The allocator's pointer type.

Definition at line 569 of file bits/alloc_traits.h.

◆ propagate_on_container_copy_assignment

template<typename _Tp>

using std::allocator_traits< allocator< _Tp > >::propagate_on_container_copy_assignment

How the allocator is propagated on copy assignment.

Definition at line 587 of file bits/alloc_traits.h.

◆ propagate_on_container_move_assignment

template<typename _Tp>

using std::allocator_traits< allocator< _Tp > >::propagate_on_container_move_assignment

How the allocator is propagated on move assignment.

Definition at line 590 of file bits/alloc_traits.h.

◆ propagate_on_container_swap

template<typename _Tp>

using std::allocator_traits< allocator< _Tp > >::propagate_on_container_swap

How the allocator is propagated on swap.

Definition at line 593 of file bits/alloc_traits.h.

◆ rebind_alloc

template<typename _Tp>

template<typename _Up>

using std::allocator_traits< allocator< _Tp > >::rebind_alloc

Definition at line 599 of file bits/alloc_traits.h.

◆ rebind_traits

template<typename _Tp>

template<typename _Up>

using std::allocator_traits< allocator< _Tp > >::rebind_traits

Definition at line 602 of file bits/alloc_traits.h.

◆ size_type

template<typename _Tp>

using std::allocator_traits< allocator< _Tp > >::size_type

The allocator's size type.

Definition at line 584 of file bits/alloc_traits.h.

◆ value_type

template<typename _Tp>

using std::allocator_traits< allocator< _Tp > >::value_type

The allocated type.

Definition at line 566 of file bits/alloc_traits.h.

◆ void_pointer

template<typename _Tp>

using std::allocator_traits< allocator< _Tp > >::void_pointer

The allocator's void pointer type.

Definition at line 575 of file bits/alloc_traits.h.

Member Function Documentation

◆ allocate() [1/2]

template<typename _Tp>

constexpr pointer std::allocator_traits< allocator< _Tp > >::allocate	(	allocator_type &	__a,
		size_type	__n )

inlinestaticconstexpr

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]

template<typename _Tp>

constexpr pointer std::allocator_traits< allocator< _Tp > >::allocate	(	allocator_type &	__a,
		size_type	__n,
		const_void_pointer	__hint )

inlinestaticconstexpr

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>

constexpr void std::allocator_traits< allocator< _Tp > >::construct	(	allocator_type &	__a,
		_Up *	__p,
		_Args &&...	__args )

inlinestaticconstexprnoexcept

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(), and std::forward().

◆ deallocate()

template<typename _Tp>

constexpr void std::allocator_traits< allocator< _Tp > >::deallocate	(	allocator_type &	__a,
		pointer	__p,
		size_type	__n )

inlinestaticconstexpr

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>

constexpr void std::allocator_traits< allocator< _Tp > >::destroy	(	allocator_type &	__a,
		_Up *	__p )

inlinestaticconstexprnoexcept

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()

template<typename _Tp>

constexpr size_type std::allocator_traits< allocator< _Tp > >::max_size ( const allocator_type & __a )

inlinestaticconstexprnoexcept

The maximum supported allocation size.

Parameters

__a	An allocator.

Returns: __a.max_size()

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

◆ select_on_container_copy_construction()

template<typename _Tp>

constexpr allocator_type std::allocator_traits< allocator< _Tp > >::select_on_container_copy_construction ( const allocator_type & __rhs )

inlinestaticconstexpr

Obtain an allocator to use when copying a container.

Parameters

__rhs An allocator.

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

Public Types

Static Public Member Functions

Detailed Description

Member Typedef Documentation

◆ allocator_type

◆ const_pointer

◆ const_void_pointer

◆ difference_type

◆ is_always_equal

◆ pointer

◆ propagate_on_container_copy_assignment

◆ propagate_on_container_move_assignment

◆ propagate_on_container_swap

◆ rebind_alloc

◆ rebind_traits

◆ size_type

◆ value_type

◆ void_pointer

Member Function Documentation

◆ allocate() [1/2]

◆ allocate() [2/2]

◆ construct()

◆ deallocate()

◆ destroy()

◆ max_size()

◆ select_on_container_copy_construction()