std::scoped_allocator_adaptor<OuterAlloc,InnerAlloc...>::allocate

 

C++

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Technical Specifications

 

Dynamic memory management

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std::scoped_allocator_adaptor

Member functions

scoped_allocator_adaptor::scoped_allocator_adaptor

scoped_allocator_adaptor::~scoped_allocator_adaptor

scoped_allocator_adaptor::operator=

scoped_allocator_adaptor::inner_allocator

scoped_allocator_adaptor::outer_allocator

scoped_allocator_adaptor::allocate

scoped_allocator_adaptor::deallocate

scoped_allocator_adaptor::max_size

scoped_allocator_adaptor::construct

scoped_allocator_adaptor::destroy

scoped_allocator_adaptor::select_on_container_copy_construction

Non-member functions

operator==operator!=

Deduction guides(C++17)

 

Defined in header <scoped_allocator>
	(1)
pointer allocate( size_type n );			(since C++11) (until C++20)
[[nodiscard]] pointer allocate( size_type n );			(since C++20)
		(2)
pointer allocate( size_type n, const_void_pointer hint );				(since C++11) (until C++20)
[[nodiscard]] pointer allocate( size_type n, const_void_pointer hint );				(since C++20)

Uses the outer allocator to allocate uninitialized storage.

1) Calls std::allocator_traits<OuterAlloc>::allocate(outer_allocator(), n)

2) Additionally provides memory locality hint, by calling std::allocator_traits<OuterAlloc>::allocate(outer_allocator(), n, hint)

Parameters

n	-	the number of objects to allocate storage for
hint	-	pointer to a nearby memory location

Return value

The pointer to the allocated storage

See also

allocate	allocates uninitialized storage (public member function of std::allocator<T>)
allocate [static]	allocates uninitialized storage using the allocator (public static member function of std::allocator_traits<Alloc>)