If this StopState object has already had a stop requested, return false. Otherwise, atomically mark this StopState object as having had a stop requested, then execute all registered callbacks in an unspecified order, and finally return true.
If this StopState object has already had a stop requested, return false. Otherwise, atomically mark this StopState object as having had a stop requested, then execute all registered callbacks in an unspecified order, and finally return true.