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

From cppreference.com
 
 
Dynamic memory management
Uninitialized storage
Garbage collection support
Miscellaneous
(C++20)
(C++11)
(C++11)
C Library
Low level memory management
 
 
[[nodiscard]] void* allocate_bytes( std::size_t nbytes,
                                    std::size_t alignment = alignof(std::max_align_t) );
(since C++20)

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

Contents

[edit] Parameters

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

[edit] Return value

A pointer to the allocated storage.

[edit] 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*>.

[edit] Exceptions

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

[edit] See also

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