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

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std::pmr::polymorphic_allocator

Member functions
polymorphic_allocator::polymorphic_allocator
polymorphic_allocator::allocate
polymorphic_allocator::deallocate
polymorphic_allocator::construct
polymorphic_allocator::destroy (C++20/26*)
polymorphic_allocator::allocate_bytes (C++20)
polymorphic_allocator::deallocate_bytes (C++20)
polymorphic_allocator::allocate_object (C++20)
polymorphic_allocator::deallocate_object (C++20)
polymorphic_allocator::new_object (C++20)
polymorphic_allocator::delete_object (C++20)
polymorphic_allocator::select_on_container_copy_construction
polymorphic_allocator::resource
Non-member functions
operator==operator!= (until C++20)

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void deallocate_bytes(void* p, std::size_t nbytes, std::size_t alignment= alignof(std::max_align_t));		(since C++20)

Deallocates the storage pointed to byp, which must have been allocated from astd::pmr::memory_resourcex that compares equal to*resource(), usingx.allocate(nbytes, alignment), typically through a call toallocate_bytes(nbytes, alignment).

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

[edit]Parameters

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

[edit]Exceptions

Throws nothing.

[edit]Notes

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

[edit]See also

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

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

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