libstdc++
std::allocator< _Tp > Class Template Reference
Utilities » Memory » Allocators

#include <memory>

Inheritance diagram for std::allocator< _Tp >:
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Public Types

typedef ptrdiff_t difference_type
using propagate_on_container_move_assignment
typedef size_t size_type
typedef _Tp value_type

Public Member Functions

constexpr allocator (const allocator &__a) noexcept
template<typename _Tp1>
constexpr allocator (const allocator< _Tp1 > &) noexcept
constexpr _Tp * allocate (size_type __n, const void *=static_cast< const void * >(0))
constexpr _Tp * allocate (size_t __n)
constexpr allocation_result< _Tp *, size_t > allocate_at_least (size_t __n)
constexpr void deallocate (_Tp *__p, size_t __n)
allocator & operator= (const allocator &)=default

Friends

constexpr bool operator== (const allocator &, const allocator &) noexcept

(Note that these are not member symbols.)

template<typename _T1, typename _T2>
constexpr bool operator== (const allocator< _T1 > &, const allocator< _T2 > &) noexcept

Detailed Description

template<typename _Tp>
class std::allocator< _Tp >

The standard allocator, as per C++03 [20.4.1].

See https://gcc.gnu.org/onlinedocs/libstdc++/manual/memory.html#std.util.memory.allocator for further details.

Template Parameters
_TpType of allocated object.

Definition at line 133 of file allocator.h.

Member Typedef Documentation

◆ difference_type

template<typename _Tp>
typedef ptrdiff_t std::allocator< _Tp >::difference_type

Definition at line 138 of file allocator.h.

◆ propagate_on_container_move_assignment

template<typename _Tp>
using std::allocator< _Tp >::propagate_on_container_move_assignment

Definition at line 155 of file allocator.h.

◆ size_type

template<typename _Tp>
typedef size_t std::allocator< _Tp >::size_type

Definition at line 137 of file allocator.h.

◆ value_type

template<typename _Tp>
typedef _Tp std::allocator< _Tp >::value_type

Definition at line 136 of file allocator.h.

Constructor & Destructor Documentation

◆ allocator() [1/3]

template<typename _Tp>
std::allocator< _Tp >::allocator ( )
inlineconstexprnoexcept

Definition at line 168 of file allocator.h.

◆ allocator() [2/3]

template<typename _Tp>
std::allocator< _Tp >::allocator ( const allocator< _Tp > & __a)
inlineconstexprnoexcept

Definition at line 172 of file allocator.h.

◆ allocator() [3/3]

template<typename _Tp>
template<typename _Tp1>
std::allocator< _Tp >::allocator ( const allocator< _Tp1 > & )
inlineconstexprnoexcept

Definition at line 183 of file allocator.h.

◆ ~allocator()

template<typename _Tp>
std::allocator< _Tp >::~allocator ( )
inlineconstexprnoexcept

Definition at line 189 of file allocator.h.

Member Function Documentation

◆ allocate() [1/2]

template<typename _Tp>
_Tp * std::__new_allocator< _Tp >::allocate ( size_type __n,
const void * = static_cast<const void*>(0) )
inlinenodiscardconstexprinherited

Definition at line 129 of file bits/new_allocator.h.

◆ allocate() [2/2]

template<typename _Tp>
_Tp * std::allocator< _Tp >::allocate ( size_t __n)
inlinenodiscardconstexpr

Definition at line 194 of file allocator.h.

◆ allocate_at_least()

template<typename _Tp>
allocation_result< _Tp *, size_t > std::allocator< _Tp >::allocate_at_least ( size_t __n)
inlinenodiscardconstexpr

Definition at line 224 of file allocator.h.

◆ deallocate()

template<typename _Tp>
void std::allocator< _Tp >::deallocate ( _Tp * __p,
size_t __n )
inlineconstexpr

Definition at line 211 of file allocator.h.

◆ operator==

template<typename _Tp>
bool operator== ( const allocator< _Tp > & ,
const allocator< _Tp > &  )
friend

Definition at line 230 of file allocator.h.

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