124     private final AtomicStampedReference<Action> action;  field in Monitors.LockController
137       this.action = new AtomicStampedReference(Action.HOLD, 0);  in LockController()
157       int stamp = action.getStamp();  in setAction()
159       while (!action.compareAndSet(Action.HOLD, a, stamp, stamp + 1)) {  in setAction()
160         stamp = action.getStamp();  in setAction()
196                 cur_action = action.get(stamp_h);  in DoLock()
220                       throw new Error("Unknown action " + action);  in DoLock()
224                   action.compareAndSet(cur_action, Action.HOLD, stamp, stamp+1);  in DoLock()
307       while (action.getReference() != Action.HOLD) { checkException(); }  in waitForActionToFinish()
322       action.set(Action.HOLD, 0);  in DoUnlock()
339       action.set(Action.HOLD, 0);  in DoCleanup()