static constexpr bool is_always_lock_free = /*implementation-defined*/; | (since C++20) |
Equals true if this operations on this atomic_ref type is always lock-free and false if it is never or sometimes lock-free.
The value of this constant is consistent with the result of member function is_lock_free.
checks if the atomic_ref object is lock-free (public member function) |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
http://en.cppreference.com/w/cpp/atomic/atomic_ref/is_always_lock_free