类似地，完成 notify() 以后，等待者的最高优先级队列前端的线程从等待中解除阻塞。
Similarly, when a notify() is done, the thread from the front of the highest-priority queue of waiters is unblocked from its wait.
释放锁以后，系统从争用者的最高优先级队列的前端选择线程，以便试图锁定对象。
When a lock is released, the system chooses the thread from the front of the highest-priority queue of contenders to try to lock the object.
一个从非空运行队列的前端分派的线程具有最高的优先级。
A thread is dispatched from the front of the nonempty run-queue with the highest priority.
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