std::experimental::atomic_weak_ptr<T>:: is_lock_free

From cppreference.com
bool is_lock_free ( ) const noexcept ;

Checks whether the atomic operations on all objects of this type are lock-free.

Parameters

(none)

Return value

true if the atomic operations on the objects of this type are lock-free, false otherwise.

See also

specializes atomic operations for std::shared_ptr
(function template)