#include <memory_resource>

Public Types
typedef pmr::polymorphic_allocator< _Tp >	allocator_type

using	allocator_type

using	const_pointer

using	const_pointer

using	const_void_pointer

using	const_void_pointer

using	difference_type

using	difference_type

using	is_always_equal

using	is_always_equal

using	pointer

using	pointer

using	propagate_on_container_copy_assignment

using	propagate_on_container_move_assignment

using	propagate_on_container_swap

using	rebind_alloc

template<typename _Up>
using	rebind_alloc

using	rebind_traits

template<typename _Up>
using	rebind_traits

using	size_type

using	size_type

typedef pmr::polymorphic_allocator< _Tp >::value_type	value_type

using	value_type

using	void_pointer

using	void_pointer

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

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

static constexpr pointer	allocate (pmr::polymorphic_allocator< _Tp > &__a, size_type __n)

static constexpr pointer	allocate (pmr::polymorphic_allocator< _Tp > &__a, size_type __n, const_void_pointer __hint)

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

static constexpr void	construct (pmr::polymorphic_allocator< _Tp > &__a, _Tp *__p, _Args &&... __args) noexcept(_S_nothrow_construct< _Tp, _Args... >())

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

static constexpr void	deallocate (pmr::polymorphic_allocator< _Tp > &__a, pointer __p, size_type __n)

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

static constexpr void	destroy (pmr::polymorphic_allocator< _Tp > &__a, _Tp *__p) noexcept(_S_nothrow_destroy< _Tp >())

static constexpr size_type	max_size (const allocator_type &) noexcept

static constexpr size_type	max_size (const pmr::polymorphic_allocator< _Tp > &__a) noexcept

static constexpr pmr::polymorphic_allocator< _Tp >	select_on_container_copy_construction (const pmr::polymorphic_allocator< _Tp > &__rhs)

using	propagate_on_container_copy_assignment

using	propagate_on_container_move_assignment

using	propagate_on_container_swap

static allocator_type	select_on_container_copy_construction (const allocator_type &) noexcept

Detailed Description

template<typename _Tp>
struct std::allocator_traits< pmr::polymorphic_allocator< _Tp > >

Partial specialization for std::pmr::polymorphic_allocator

Since: C++17

Definition at line 397 of file memory_resource.h.

Member Typedef Documentation

◆ allocator_type [1/2]

typedef pmr::polymorphic_allocator< _Tp > std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::allocator_type

The allocator type.

Definition at line 252 of file bits/alloc_traits.h.

◆ allocator_type [2/2]

template<typename _Tp>

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::allocator_type

The allocator type.

Definition at line 400 of file memory_resource.h.

◆ const_pointer [1/2]

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::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 301 of file bits/alloc_traits.h.

◆ const_pointer [2/2]

template<typename _Tp>

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::const_pointer

The allocator's const pointer type.

Definition at line 409 of file memory_resource.h.

◆ const_void_pointer [1/2]

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::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 317 of file bits/alloc_traits.h.

◆ const_void_pointer [2/2]

template<typename _Tp>

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::const_void_pointer

The allocator's const void pointer type.

Definition at line 415 of file memory_resource.h.

◆ difference_type [1/2]

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::difference_type

The allocator's difference type.

Alloc::difference_type if that type exists, otherwise pointer_traits<pointer>::difference_type

Definition at line 325 of file bits/alloc_traits.h.

◆ difference_type [2/2]

template<typename _Tp>

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::difference_type

The allocator's difference type.

Definition at line 418 of file memory_resource.h.

◆ is_always_equal [1/2]

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::is_always_equal

Whether all instances of the allocator type compare equal.

Alloc::is_always_equal if that type exists, otherwise is_empty<Alloc>::type

Definition at line 365 of file bits/alloc_traits.h.

◆ is_always_equal [2/2]

template<typename _Tp>

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::is_always_equal

Whether all instances of the allocator type compare equal.

Definition at line 437 of file memory_resource.h.

◆ pointer [1/2]

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::pointer

The allocator's pointer type.

Alloc::pointer if that type exists, otherwise value_type*

Definition at line 261 of file bits/alloc_traits.h.

◆ pointer [2/2]

template<typename _Tp>

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::pointer

The allocator's pointer type.

Definition at line 406 of file memory_resource.h.

◆ propagate_on_container_copy_assignment [1/2]

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::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 341 of file bits/alloc_traits.h.

◆ propagate_on_container_copy_assignment [2/2]

template<typename _Tp>

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::propagate_on_container_copy_assignment

A polymorphic_allocator does not propagate when a container is copied, moved, or swapped.

Definition at line 427 of file memory_resource.h.

◆ propagate_on_container_move_assignment [1/2]

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::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 349 of file bits/alloc_traits.h.

◆ propagate_on_container_move_assignment [2/2]

template<typename _Tp>

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::propagate_on_container_move_assignment

A polymorphic_allocator does not propagate when a container is copied, moved, or swapped.

Definition at line 428 of file memory_resource.h.

◆ propagate_on_container_swap [1/2]

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::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 357 of file bits/alloc_traits.h.

◆ propagate_on_container_swap [2/2]

template<typename _Tp>

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::propagate_on_container_swap

A polymorphic_allocator does not propagate when a container is copied, moved, or swapped.

Definition at line 429 of file memory_resource.h.

◆ rebind_alloc [1/2]

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::rebind_alloc

Definition at line 368 of file bits/alloc_traits.h.

◆ rebind_alloc [2/2]

template<typename _Tp>

template<typename _Up>

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::rebind_alloc

Definition at line 440 of file memory_resource.h.

◆ rebind_traits [1/2]

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::rebind_traits

Definition at line 370 of file bits/alloc_traits.h.

◆ rebind_traits [2/2]

template<typename _Tp>

template<typename _Up>

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::rebind_traits

Definition at line 443 of file memory_resource.h.

◆ size_type [1/2]

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::size_type

The allocator's size type.

Alloc::size_type if that type exists, otherwise make_unsigned<difference_type>::type

Definition at line 333 of file bits/alloc_traits.h.

◆ size_type [2/2]

template<typename _Tp>

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::size_type

The allocator's size type.

Definition at line 421 of file memory_resource.h.

◆ value_type [1/2]

typedef pmr::polymorphic_allocator< _Tp >::value_type std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::value_type

The allocated type.

Definition at line 254 of file bits/alloc_traits.h.

◆ value_type [2/2]

template<typename _Tp>

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::value_type

The allocated type.

Definition at line 403 of file memory_resource.h.

◆ void_pointer [1/2]

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::void_pointer

The allocator's void pointer type.

Alloc::void_pointer if that type exists, otherwise pointer_traits<pointer>::rebind<void>

Definition at line 309 of file bits/alloc_traits.h.

◆ void_pointer [2/2]

template<typename _Tp>

using std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::void_pointer

The allocator's void pointer type.

Definition at line 412 of file memory_resource.h.

Member Function Documentation

◆ allocate() [1/4]

template<typename _Tp>

static pointer std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::allocate	(	allocator_type &	__a,
		size_type	__n )

inlinestaticnodiscard

Allocate memory.

Parameters

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

Calls a.allocate(n).

Definition at line 453 of file memory_resource.h.

◆ allocate() [2/4]

template<typename _Tp>

static pointer std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::allocate	(	allocator_type &	__a,
		size_type	__n,
		const_void_pointer	)

inlinestaticnodiscard

Allocate memory.

Parameters

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

Returns: Memory of suitable size and alignment for n objects of type value_type.

The third parameter is ignored..

Returns a.allocate(n).

Definition at line 468 of file memory_resource.h.

◆ allocate() [3/4]

static constexpr pointer std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::allocate	(	pmr::polymorphic_allocator< _Tp > &	__a,
		size_type	__n )

inlinestaticnodiscardconstexpr

Allocate memory.

Parameters

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

Calls a.allocate(n)

Definition at line 380 of file bits/alloc_traits.h.

◆ allocate() [4/4]

static constexpr pointer std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::allocate	(	pmr::polymorphic_allocator< _Tp > &	__a,
		size_type	__n,
		const_void_pointer	__hint )

inlinestaticnodiscardconstexpr

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 395 of file bits/alloc_traits.h.

◆ construct() [1/2]

template<typename _Tp>

template<typename _Up, typename... _Args>

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

inlinestatic

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 496 of file memory_resource.h.

References std::forward().

◆ construct() [2/2]

static constexpr void std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::construct	(	pmr::polymorphic_allocator< _Tp > &	__a,
		_Tp *	__p,
		_Args &&...	__args )

inlinestaticconstexprnoexcept

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 433 of file bits/alloc_traits.h.

◆ deallocate() [1/2]

template<typename _Tp>

static void std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::deallocate	(	allocator_type &	__a,
		pointer	__p,
		size_type	__n )

inlinestatic

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 480 of file memory_resource.h.

◆ deallocate() [2/2]

static constexpr void std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::deallocate	(	pmr::polymorphic_allocator< _Tp > &	__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 412 of file bits/alloc_traits.h.

◆ destroy() [1/2]

template<typename _Tp>

template<typename _Up>

static constexpr void std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::destroy	(	allocator_type &	,
		_Up *	__p )

inlinestaticconstexprnoexcept

Destroy an object of type _Up

Parameters

__a	An allocator.
__p	Pointer to the object to destroy

Calls p->_Up().

Definition at line 508 of file memory_resource.h.

◆ destroy() [2/2]

static constexpr void std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::destroy	(	pmr::polymorphic_allocator< _Tp > &	__a,
		_Tp *	__p )

inlinestaticconstexprnoexcept

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 452 of file bits/alloc_traits.h.

◆ max_size() [1/2]

template<typename _Tp>

static constexpr size_type std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::max_size ( const allocator_type & )

inlinestaticconstexprnoexcept

The maximum supported allocation size.

Returns: numeric_limits<size_t>::max() / sizeof(value_type)

Definition at line 517 of file memory_resource.h.

◆ max_size() [2/2]

static constexpr size_type std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::max_size ( const pmr::polymorphic_allocator< _Tp > & __a )

inlinestaticconstexprnoexcept

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 470 of file bits/alloc_traits.h.

◆ select_on_container_copy_construction() [1/2]

template<typename _Tp>

static allocator_type std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::select_on_container_copy_construction ( const allocator_type & )

inlinestaticnoexcept

A polymorphic_allocator does not propagate when a container is copied, moved, or swapped.

Definition at line 432 of file memory_resource.h.

◆ select_on_container_copy_construction() [2/2]

static constexpr pmr::polymorphic_allocator< _Tp > std::allocator_traits< pmr::polymorphic_allocator< _Tp > >::select_on_container_copy_construction ( const pmr::polymorphic_allocator< _Tp > & __rhs )

inlinestaticconstexpr

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 490 of file bits/alloc_traits.h.

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

memory_resource.h

Public Types

Static Public Member Functions

Detailed Description

Member Typedef Documentation

◆ allocator_type [1/2]

◆ allocator_type [2/2]

◆ const_pointer [1/2]

◆ const_pointer [2/2]

◆ const_void_pointer [1/2]

◆ const_void_pointer [2/2]

◆ difference_type [1/2]

◆ difference_type [2/2]

◆ is_always_equal [1/2]

◆ is_always_equal [2/2]

◆ pointer [1/2]

◆ pointer [2/2]

◆ propagate_on_container_copy_assignment [1/2]

◆ propagate_on_container_copy_assignment [2/2]

◆ propagate_on_container_move_assignment [1/2]

◆ propagate_on_container_move_assignment [2/2]

◆ propagate_on_container_swap [1/2]

◆ propagate_on_container_swap [2/2]

◆ rebind_alloc [1/2]

◆ rebind_alloc [2/2]

◆ rebind_traits [1/2]

◆ rebind_traits [2/2]

◆ size_type [1/2]

◆ size_type [2/2]

◆ value_type [1/2]

◆ value_type [2/2]

◆ void_pointer [1/2]

◆ void_pointer [2/2]

Member Function Documentation

◆ allocate() [1/4]

◆ allocate() [2/4]

◆ allocate() [3/4]

◆ allocate() [4/4]

◆ construct() [1/2]

◆ construct() [2/2]

◆ deallocate() [1/2]

◆ deallocate() [2/2]

◆ destroy() [1/2]

◆ destroy() [2/2]

◆ max_size() [1/2]

◆ max_size() [2/2]

◆ select_on_container_copy_construction() [1/2]

◆ select_on_container_copy_construction() [2/2]