std::allocator::allocate

 

C++

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Technical Specifications

 

Dynamic memory management

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owner_less (C++11)
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Allocators
allocator
allocator_traits (C++11)
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allocator_arg (C++11)
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declare_reachable (C++11)
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addressof (C++11)
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C Library
malloc calloc	realloc free
Low level memory management

 

std::allocator

Member functions

allocator::allocator

allocator::~allocator

allocator::address

allocator::allocate

allocator::deallocate

allocator::max_size

allocator::construct

allocator::destroy

Non-member functions

operator==operator!=

 

pointer allocate( size_type n, std::allocator<void>::const_pointer hint = 0 );

Allocates n * sizeof(T) bytes of uninitialized storage by calling ::operator new(std::size_t), but it is unspecified when and how this function is called. The pointer hint may be used to provide locality of reference: the allocator, if supported by the implementation, will attempt to allocate the new memory block as close as possible to hint.

Parameters

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

Return value

Pointer to the first byte of a memory block suitably aligned and sufficient to hold an array of n objects of type T.

Exceptions

Throws std::bad_alloc if allocation fails.

See also

allocate [static]

allocates uninitialized storage using the allocator (public static member function of std::allocator_traits)