std::allocator_traits::allocate

Defined in header `<memory>`

static pointer allocate( Alloc& a, size_type n );	(1)	(since C++11)

static pointer allocate( Alloc& a, size_type n, const_void_pointer hint );	(2)	(since C++11)

Uses the allocator a to allocate n*sizeof(Alloc::value_type) bytes of uninitialized storage.

1) Calls a.allocate(n)

2) Additionally passes memory locality hint hint. Calls a.allocate(n, hint) if possible. If not possible (e.g. a has no two-argument member function allocate()), calls a.allocate(n)

[edit] Parameters

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

[edit] Return value

The pointer returned by the call to a.allocate(n)

[edit] See also


allocate	allocates uninitialized storage (public member function of `std::allocator`)

Language
Standard library headers
Concepts
Utilities library
Strings library
Containers library
Algorithms library
Iterators library
Numerics library
Input/output library
Localizations library
Regular expressions library (C++11)
Atomic operations library (C++11)
Thread support library (C++11)

Member functions
allocator_traits::allocate
allocator_traits::deallocate
allocator_traits::construct
allocator_traits::destroy
allocator_traits::max_size
allocator_traits::select_on_container_copy_construction