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What does 'Locked ownable synchronizers' mean?

882089Aug 12 2011 — edited Aug 17 2011

I check thread dump file (generated by jstack) recently, I write below:

"AWT-XAWT" daemon prio=10 tid=0x78280000 nid=0x75c runnable [0x77aa9000]
java.lang.Thread.State: RUNNABLE
at sun.awt.X11.XlibWrapper.XGetWindowProperty(Native Method)
at sun.awt.X11.WindowPropertyGetter.execute(Unknown Source)
at sun.awt.X11.WindowPropertyGetter.execute(Unknown Source)
at sun.awt.X11.XNETProtocol.calcWMExtents(Unknown Source)
at sun.awt.X11.XNETProtocol.getWMExtents(Unknown Source)
at sun.awt.X11.XWindowPeer.getWMSetInsets(Unknown Source)
at sun.awt.X11.XDecoratedPeer.handleReparentNotifyEvent(Unknown Source)
at sun.awt.X11.XBaseWindow.dispatchEvent(Unknown Source)
at sun.awt.X11.XBaseWindow.dispatchToWindow(Unknown Source)
at sun.awt.X11.XToolkit.dispatchEvent(Unknown Source)
at sun.awt.X11.XToolkit.run(Unknown Source)
at sun.awt.X11.XToolkit.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

Locked ownable synchronizers:
- <0x7d2904c8> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)

What do the last two lines mean? Thanks!

Locked Post

New comments cannot be posted to this locked post.

Locked on Sep 14 2011

Added on Aug 12 2011

#swing

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