120     private static enum Action { HOLD, RELEASE, NOTIFY, NOTIFY_ALL, WAIT, TIMED_WAIT }  enum in Monitors.LockController
124     private final AtomicStampedReference<Action> action;
137       this.action = new AtomicStampedReference(Action.HOLD, 0);  in LockController()
156     private void setAction(Action a) {  in setAction()
159       while (!action.compareAndSet(Action.HOLD, a, stamp, stamp + 1)) {  in setAction()
193             Action cur_action = Action.HOLD;  in DoLock()
198                 if (cur_action == Action.RELEASE) {  in DoLock()
224                   action.compareAndSet(cur_action, Action.HOLD, stamp, stamp+1);  in DoLock()
274       setAction(Action.NOTIFY);  in DoNotify()
281       setAction(Action.NOTIFY_ALL);  in DoNotifyAll()
288       setAction(Action.TIMED_WAIT);  in DoTimedWait()
295       setAction(Action.WAIT);  in DoWait()
307       while (action.getReference() != Action.HOLD) { checkException(); }  in waitForActionToFinish()
317       setAction(Action.RELEASE);  in DoUnlock()
322       action.set(Action.HOLD, 0);  in DoUnlock()
339       action.set(Action.HOLD, 0);  in DoCleanup()