std::pmr::polymorphic_allocator<T>::allocate_bytes
[[nodiscard]] void* allocate_bytes( std::size_t nbytes,
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::pmr::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
.