std::pmr::polymorphic_allocator<T>::deallocate_object
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< cpp | memory | polymorphic allocator
template <class U> void deallocate_object( U* p, std::size_t n = 1 ); |
(since C++20) | |
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(n*sizeof(U), alignof(U)), typically through a call to allocate_object<U>(n).
Equivalent to deallocate_bytes(p, n*sizeof(U), alignof(U));
Parameters
p | - | pointer to memory to deallocate |
n | - | number of objects of type U the memory was for |
Exceptions
Throws nothing.
Notes
This function was introduced for use with the fully-specialized allocator std::polymorphic_allocator<>, but it may be useful in any specialization.
See also
(C++20) |
Free raw memory obtained from allocate_bytes (public member function) |
(C++20) |
Destroys and deallocates an object (public member function) |
[static] |
deallocates storage using the allocator (public static member function of std::allocator_traits<Alloc> ) |
deallocates memory (public member function of std::pmr::memory_resource ) |