A lock release or lock notify operation is analogous to a scheduling dispatch operation in the sense that the thread at the head of the highest-priority queue is acted on.

锁释放或锁notify操作与调度分派操作类似，因为都是对最高优先级队列头部的线程起作用。

youdao

There is an interaction between notification and locking — to wait or notify on an object, you must hold the lock for that object.

通知与锁定之间有一个交互——为了在对象上wait或notify，您必须持有该对象的锁。

youdao

Battery life for the four AAs is rated for a year, and you've no need to worry about being surprised by an outage, either: the system will notify you well in advance using the lock's eight RGB LEDs or through the app.

ENGADGET