AbstractQueuedSynchronizer AQS类图

1.AQS main structure

　　

2.public methods and properties (subclass does not need to override, most methods are final)

　　

3. External class of concurrency control and AQS reference -Semphore CountDownLatch

　　

4. External -ReentrantLock concurrency control and a class reference to the AQS ReentrantReadWriteLock

　　

The thread pool ThreadPoolExecutor and ScheduledThreadPoolExecutor use of AQS