std::pmr::polymorphic_allocator<T>:: deallocate_object

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Dynamic memory management
Uninitialized memory algorithms
Constrained uninitialized memory algorithms
Allocators
Garbage collection support
(C++11) (until C++23)
(C++11) (until C++23)
(C++11) (until C++23)
(C++11) (until C++23)
(C++11) (until C++23)
(C++11) (until C++23)



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:: pmr :: polymorphic_allocator <> , but it may be useful in any specialization.

See also

free raw memory obtained from allocate_bytes
(public member function)
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 )