Principles of AQS

AQS of java thread (focus)
http://www.cnblogs.com/nod0620/archive/2012/07/23/2605504.html

AQS source code analysis of JAVA concurrent programming study notes (acquisition and release)
http://blog. csdn.net/aesop_wubo/article/details/7555956

The principle of AQS
http://ifeve.com/java-special-troops-aqs/

Java Concurrency (7): Lock Mechanism part 2 AQS
http://www. blogjava.net/xylz/archive/2010/07/06/325390.html

Doug lee The java.util.concurrent Synchronizer Framework
http://gee.cs.oswego.edu/dl/papers/aqs.pdf