NAME¶

std::pmr::polymorphic_allocator::deallocate_bytes - std::pmr::polymorphic_allocator::deallocate_bytes

Synopsis¶

void deallocate_bytes( void* p,

std::size_t nbytes, (since C++20)

std::size_t alignment =
alignof(std::max_align_t) );

Deallocates the storage pointed to by p, which must have been allocated from a
std::pmr::memory_resource x that compares equal to *resource(), using
x.allocate(nbytes, alignment), typically through a call to allocate_bytes(nbytes,
alignment).

Equivalent to resource()->deallocate(p, nbytes, alignment);.

Parameters¶

p - pointer to memory to deallocate
nbytes - the number of bytes originally allocated
alignment - the alignment originally allocated

Exceptions¶

Throws nothing.

Notes¶

This function was introduced for use with the fully-specialized allocator
std::pmr::polymorphic_allocator<>, but it may be useful in any specialization.

See also¶

deallocate_object frees raw memory obtained by allocate_object
(C++20) (public member function)
delete_object destroys and deallocates an object
(C++20) (public member function)
deallocate deallocates storage using the allocator
[static] (public static member function of std::allocator_traits<Alloc>)

deallocate deallocates memory
(public member function of std::pmr::memory_resource)