std::pmr::polymorphic_allocator::allocate_bytes (3) Linux Manual Page

std::pmr::polymorphic_allocator<T>::allocate_bytes – std::pmr::polymorphic_allocator<T>::allocate_bytes

Synopsis

void *allocate_bytes(std::size_t nbytes, (since C++ 20)

                                             std::size_t alignment = alignof(std::max_align_t));
Allocates nbytes bytes of storage at specified alignment alignment using the underlying memory resource.Equivalent to return resource()->allocate(nbytes, alignment);

Parameters

nbytes – the number of bytes to allocate
alignment – the alignment to use

Return value

A pointer to the allocated storage.

Notes

This function was introduced for use with the fully-specialized allocator std::polymorphic_allocator<>, but it may be useful in any specialization.
The return type is void* (rather than, e.g., std::byte*) to support conversion to an arbitrary pointer type U* by static_cast<U*>.

Exceptions

May throw any exceptions thrown by the call to resource()->allocate.

See also

allocate_object Allocates raw memory suitable for an object or an array
                (public member function)
(C++20)
new_object Allocates and constructs an object
                (public member function)
(C++20)
                Allocate memory
allocate (public member function)
allocate allocates uninitialized storage using the allocator
                (public static member function of std::allocator_traits<Alloc>)
[static]
                allocates memory
allocate (public member function of std::pmr::memory_resource)