libstdc++
__gnu_cxx::__alloc_traits< _Alloc, typename > Struct Template Reference
Inheritance diagram for __gnu_cxx::__alloc_traits< _Alloc, typename >:
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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
 
using const_void_pointer = typename _Ptr< __cv_pointer, const void >::type
 
typedef _Base_type::difference_type difference_type
 
using is_always_equal = __detected_or_t< typename is_empty< _Alloc >::type, __equal, _Alloc >
 
typedef _Base_type::pointer pointer
 
using propagate_on_container_copy_assignment = __detected_or_t< false_type, __pocca, _Alloc >
 
using propagate_on_container_move_assignment = __detected_or_t< false_type, __pocma, _Alloc >
 
using propagate_on_container_swap = __detected_or_t< false_type, __pocs, _Alloc >
 
template<typename _Tp >
using rebind_alloc = __alloc_rebind< _Alloc, _Tp >
 
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
 
using void_pointer = typename _Ptr< __v_pointer, void >::type
 

Static Public Member Functions

static constexpr bool _S_always_equal ()
 
static constexpr bool _S_nothrow_move ()
 
static constexpr 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 constexpr _Alloc _S_select_on_copy (const _Alloc &__a)
 
static constexpr pointer allocate (_Alloc &__a, size_type __n)
 
static constexpr pointer allocate (_Alloc &__a, size_type __n)
 
static constexpr pointer allocate (_Alloc &__a, size_type __n, const_void_pointer __hint)
 
static constexpr pointer allocate (_Alloc &__a, size_type __n, const_void_pointer __hint)
 
template<typename _Ptr , typename... _Args>
static constexpr std::__enable_if_t< __is_custom_pointer< _Ptr >::value > construct (_Alloc &__a, _Ptr __p, _Args &&... __args) noexcept(noexcept(_Base_type::construct(__a, std::__to_address(__p), std::forward< _Args >(__args)...)))
 
template<typename _Tp , typename... _Args>
static constexpr auto construct (_Alloc &__a, _Tp *__p, _Args &&... __args) noexcept(noexcept(_S_construct(__a, __p, std::forward< _Args >(__args)...))) -> decltype(_S_construct(__a, __p, std::forward< _Args >(__args)...))
 
template<typename _Tp , typename... _Args>
static constexpr auto construct (_Alloc &__a, _Tp *__p, _Args &&... __args) noexcept(noexcept(_S_construct(__a, __p, std::forward< _Args >(__args)...))) -> decltype(_S_construct(__a, __p, std::forward< _Args >(__args)...))
 
static constexpr void deallocate (_Alloc &__a, pointer __p, size_type __n)
 
static constexpr void deallocate (_Alloc &__a, pointer __p, size_type __n)
 
template<typename _Ptr >
static constexpr std::__enable_if_t< __is_custom_pointer< _Ptr >::value > destroy (_Alloc &__a, _Ptr __p) noexcept(noexcept(_Base_type::destroy(__a, std::__to_address(__p))))
 
template<typename _Tp >
static constexpr void destroy (_Alloc &__a, _Tp *__p) noexcept(noexcept(_S_destroy(__a, __p, 0)))
 
template<typename _Tp >
static constexpr void destroy (_Alloc &__a, _Tp *__p) noexcept(noexcept(_S_destroy(__a, __p, 0)))
 
static constexpr size_type max_size (const _Alloc &__a) noexcept
 
static constexpr size_type max_size (const _Alloc &__a) noexcept
 
static constexpr _Alloc select_on_container_copy_construction (const _Alloc &__rhs)
 

Protected Types

template<typename _Tp >
using __c_pointer = typename _Tp::const_pointer
 
template<typename _Tp >
using __cv_pointer = typename _Tp::const_void_pointer
 
template<typename _Tp >
using __equal = typename _Tp::is_always_equal
 
template<typename _Tp >
using __pocca = typename _Tp::propagate_on_container_copy_assignment
 
template<typename _Tp >
using __pocma = typename _Tp::propagate_on_container_move_assignment
 
template<typename _Tp >
using __pocs = typename _Tp::propagate_on_container_swap
 
template<typename _Tp >
using __pointer = typename _Tp::pointer
 
template<typename _Tp >
using __v_pointer = typename _Tp::void_pointer
 

Detailed Description

template<typename _Alloc, typename = typename _Alloc::value_type>
struct __gnu_cxx::__alloc_traits< _Alloc, typename >

Uniform interface to C++98 and C++11 allocators.

Definition at line 48 of file ext/alloc_traits.h.

Member Typedef Documentation

◆ const_void_pointer

template<typename _Alloc >
using std::allocator_traits< _Alloc >::const_void_pointer = typename _Ptr<__cv_pointer, const void>::type
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 154 of file bits/alloc_traits.h.

◆ is_always_equal

template<typename _Alloc >
using std::allocator_traits< _Alloc >::is_always_equal = __detected_or_t<typename is_empty<_Alloc>::type, __equal, _Alloc>
inherited

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 205 of file bits/alloc_traits.h.

◆ propagate_on_container_copy_assignment

template<typename _Alloc >
using std::allocator_traits< _Alloc >::propagate_on_container_copy_assignment = __detected_or_t<false_type, __pocca, _Alloc>
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 178 of file bits/alloc_traits.h.

◆ propagate_on_container_move_assignment

template<typename _Alloc >
using std::allocator_traits< _Alloc >::propagate_on_container_move_assignment = __detected_or_t<false_type, __pocma, _Alloc>
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 187 of file bits/alloc_traits.h.

◆ propagate_on_container_swap

template<typename _Alloc >
using std::allocator_traits< _Alloc >::propagate_on_container_swap = __detected_or_t<false_type, __pocs, _Alloc>
inherited

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.

◆ void_pointer

template<typename _Alloc >
using std::allocator_traits< _Alloc >::void_pointer = typename _Ptr<__v_pointer, void>::type
inherited

The allocator's void pointer type.

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

Definition at line 146 of file bits/alloc_traits.h.

Member Function Documentation

◆ allocate() [1/4]

template<typename _Alloc >
static constexpr pointer std::allocator_traits< _Alloc >::allocate ( _Alloc &  __a,
size_type  __n 
)
inlinestaticconstexprinherited

Allocate memory.

Parameters
__aAn allocator.
__nThe number of objects to allocate space for.

Calls a.allocate(n)

Definition at line 313 of file bits/alloc_traits.h.

Referenced by std::__allocate_guarded().

◆ allocate() [2/4]

template<typename _Alloc , typename = typename _Alloc::value_type>
static constexpr pointer std::allocator_traits< _Alloc >::allocate
inlinestaticconstexpr

Allocate memory.

Parameters
__aAn allocator.
__nThe number of objects to allocate space for.

Calls a.allocate(n)

Definition at line 313 of file bits/alloc_traits.h.

◆ allocate() [3/4]

template<typename _Alloc >
static constexpr pointer std::allocator_traits< _Alloc >::allocate ( _Alloc &  __a,
size_type  __n,
const_void_pointer  __hint 
)
inlinestaticconstexprinherited

Allocate memory.

Parameters
__aAn allocator.
__nThe number of objects to allocate space for.
__hintAid 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 328 of file bits/alloc_traits.h.

◆ allocate() [4/4]

template<typename _Alloc , typename = typename _Alloc::value_type>
static constexpr pointer std::allocator_traits< _Alloc >::allocate
inlinestaticconstexpr

Allocate memory.

Parameters
__aAn allocator.
__nThe number of objects to allocate space for.
__hintAid 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 328 of file bits/alloc_traits.h.

◆ construct() [1/2]

template<typename _Alloc >
template<typename _Tp , typename... _Args>
static constexpr auto std::allocator_traits< _Alloc >::construct ( _Alloc &  __a,
_Tp *  __p,
_Args &&...  __args 
) -> decltype(_S_construct(__a, __p, std::forward<_Args>(__args)...))
inlinestaticconstexprnoexceptinherited

Construct an object of type _Tp

Parameters
__aAn allocator.
__pPointer to memory of suitable size and alignment for Tp
__argsConstructor 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 356 of file bits/alloc_traits.h.

◆ construct() [2/2]

template<typename _Alloc , typename = typename _Alloc::value_type>
template<typename _Tp , typename... _Args>
static constexpr auto std::allocator_traits< _Alloc >::construct ( typename _Tp  ,
typename...  _Args 
)
inlinestaticconstexprnoexcept

Construct an object of type _Tp

Parameters
__aAn allocator.
__pPointer to memory of suitable size and alignment for Tp
__argsConstructor 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 356 of file bits/alloc_traits.h.

◆ deallocate() [1/2]

template<typename _Alloc >
static constexpr void std::allocator_traits< _Alloc >::deallocate ( _Alloc &  __a,
pointer  __p,
size_type  __n 
)
inlinestaticconstexprinherited

Deallocate memory.

Parameters
__aAn allocator.
__pPointer to the memory to deallocate.
__nThe number of objects space was allocated for.

Calls a.deallocate(p, n)

Definition at line 340 of file bits/alloc_traits.h.

Referenced by std::__allocated_ptr< _Alloc >::~__allocated_ptr().

◆ deallocate() [2/2]

template<typename _Alloc , typename = typename _Alloc::value_type>
static constexpr void std::allocator_traits< _Alloc >::deallocate
inlinestaticconstexpr

Deallocate memory.

Parameters
__aAn allocator.
__pPointer to the memory to deallocate.
__nThe number of objects space was allocated for.

Calls a.deallocate(p, n)

Definition at line 340 of file bits/alloc_traits.h.

◆ destroy() [1/2]

template<typename _Alloc >
template<typename _Tp >
static constexpr void std::allocator_traits< _Alloc >::destroy ( _Alloc &  __a,
_Tp *  __p 
)
inlinestaticconstexprnoexceptinherited

Destroy an object of type _Tp.

Parameters
__aAn allocator.
__pPointer to the object to destroy

Calls __a.destroy(__p) if that expression is well-formed, otherwise calls __p->~_Tp()

Definition at line 372 of file bits/alloc_traits.h.

Referenced by std::_Destroy().

◆ destroy() [2/2]

template<typename _Alloc , typename = typename _Alloc::value_type>
template<typename _Tp >
static constexpr void std::allocator_traits< _Alloc >::destroy ( typename _Tp  )
inlinestaticconstexprnoexcept

Destroy an object of type _Tp.

Parameters
__aAn allocator.
__pPointer to the object to destroy

Calls __a.destroy(__p) if that expression is well-formed, otherwise calls __p->~_Tp()

Definition at line 372 of file bits/alloc_traits.h.

◆ max_size() [1/2]

template<typename _Alloc >
static constexpr size_type std::allocator_traits< _Alloc >::max_size ( const _Alloc &  __a)
inlinestaticconstexprnoexceptinherited

The maximum supported allocation size.

Parameters
__aAn 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 385 of file bits/alloc_traits.h.

◆ max_size() [2/2]

template<typename _Alloc , typename = typename _Alloc::value_type>
static constexpr size_type std::allocator_traits< _Alloc >::max_size
inlinestaticconstexprnoexcept

The maximum supported allocation size.

Parameters
__aAn 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 385 of file bits/alloc_traits.h.

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

◆ select_on_container_copy_construction()

template<typename _Alloc >
static constexpr _Alloc std::allocator_traits< _Alloc >::select_on_container_copy_construction ( const _Alloc &  __rhs)
inlinestaticconstexprinherited

Obtain an allocator to use when copying a container.

Parameters
__rhsAn 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 397 of file bits/alloc_traits.h.


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