std::pmr::polymorphic_allocator<T>::deallocate_bytes (3) - Linux Manuals

std::pmr::polymorphic_allocator<T>::deallocate_bytes: std::pmr::polymorphic_allocator<T>::deallocate_bytes


std::pmr::polymorphic_allocator<T>::deallocate_bytes - std::pmr::polymorphic_allocator<T>::deallocate_bytes


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 resorce()->deallocate(p, nbytes, alignment);


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


Throws nothing.


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

See also

deallocate_object Frees raw memory obtained by allocate_object
                  (public member function)

delete_object Destroys and deallocates an object
                  (public member function)

deallocate deallocates storage using the allocator
                  (public static member function of std::allocator_traits<Alloc>)
                  deallocates memory
deallocate (public member function of std::pmr::memory_resource)