reentrantlock

网络释义：可重入锁；重进入锁

网络释义

1.可重入锁 3.1.1.1 核心- AbstractQueuedSynchronizer 3.1.1.2 重进入锁- ReentrantLock ...

1.However, the existence of these obvious benefits are not a good enough reason to always prefer ReentrantLock to synchronized.但是，这些明显存在的好处，还不足以成为用ReentrantLock代替synchronized的理由。

2.You'll see that atomic variables offer an additional improvement over ReentrantLock, which already had a big advantage over synchronization.您将看到，虽然ReentrantLock拥有比同步更多的优点，但相对于ReentrantLock，原子变量提供了其他改进。

3.So the fact that ReentrantLocks are "unfair" by default is simply making explicit something that was true all along for synchronization.所以，默认情况下ReentrantLock是“不公平”的，这一事实只是把同步中一直是事件的东西表面化而已。

4.As a bonus, the implementation of ReentrantLock is far more scalable under contention than the current implementation of synchronized.除此之外，与目前的synchronized实现相比，争用下的ReentrantLock实现更具可伸缩性。

5.Or even rewrite our existing synchronized code in terms of ReentrantLock?或者甚至用ReentrantLock重写我们现有的synchronized代码？

6.The stated goal was to answer the question, "Which is faster, synchronization or ReentrantLock? "此举的目的是回答以下问题：“哪一个更快，同步还是ReentrantLock？”

7.ReentrantLock, in turn, uses atomic variables to maintain the queue of threads waiting for the lock.然后，ReentrantLock使用原子变量来维护等待锁定的线程队列。

8.However, using the new ReentrantLock approach, you will see a blocked count of zero.但是，使用新的ReentrantLock方式，会看到一个为0的阻塞计数。

9.Listing 1. Protecting a block of code with ReentrantLock.清单1.用ReentrantLock保护代码块。