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

From cppreference.com
 
 
Dynamic memory management
Smart pointers
(C++11)
(C++11)
(C++11)
(until C++17)
(C++11)
Allocators
Memory resources
Uninitialized storage
Uninitialized memory algorithms
Constrained uninitialized memory algorithms
Garbage collection support
Miscellaneous
(C++20)
(C++11)
(C++11)
C Library
Low level memory management
 
 
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));


Contents

[edit] Parameters

p - pointer to memory to deallocate
n - number of objects of type U the memory was for

[edit] Exceptions

Throws nothing.

[edit] Notes

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

[edit] See also

Free raw memory obtained from allocate_bytes
(public member function) [edit]
Destroys and deallocates an object
(public member function) [edit]
[static]
deallocates storage using the allocator
(public static member function of std::allocator_traits<Alloc>) [edit]
deallocates memory
(public member function of std::pmr::memory_resource) [edit]