Locked ownable synchronizers

An ownable synchronizer is a synchronizer that may be exclusively owned by a thread and uses AbstractOwnableSynchronizer (or its subclass) to implement its synchronization property. ReentrantLock and ReentrantReadWriteLock are two examples of ownable synchronizers provided by the platform.

http://stackoverflow.com/questions/41300520/what-is-locked-ownable-synchronizers-in-thread-dump