JDK-6798036 : Deadlock with Frame.getExtendedState() and AWT tree lock
  • Type: Bug
  • Component: client-libs
  • Sub-Component: java.awt
  • Affected Version: 7
  • Priority: P3
  • Status: Closed
  • Resolution: Cannot Reproduce
  • OS: generic,solaris_10
  • CPU: generic,sparc
  • Submitted: 2009-01-27
  • Updated: 2012-03-22
  • Resolved: 2009-06-16
Related Reports
Duplicate :  
JDK-6810951 - 2D test case fail because of deadlock on JDK7 b48 on Solaris 10/sparcv9
Relates :  
JDK-6724890 - Deadlock between AWT-EventQueue-1 and AWT-XAWT threads during IDE start
Relates :  
JDK-6708322 - test/closed/java/awt/Focus/TemporaryLostComponentDeadlock fails
Relates :  
JDK-6804834 - api/java_awt/awt_focus_subsystem/event_delivery/index.html#EventDelivery hangs since JDK7 b27
Description
Deadlock is reported by one of the customers:

2009-01-26 12:42:20
Full thread dump Java HotSpot(TM) Server VM (14.0-b10 mixed mode):
 
"AWT-EventQueue-0" prio=10 tid=0x08223c00 nid=0x4852 waiting for monitor entry [0x6fac4000..0x6fac4eb0]
   java.lang.Thread.State: BLOCKED (on object monitor)
        at java.awt.Component.invalidate(Component.java:2692)
        - waiting to lock <0xad0ce048> (a java.awt.Component$AWTTreeLock)
        at java.awt.Container.invalidate(Container.java:1453)
        at java.awt.Window.dispatchEventImpl(Window.java:2556)
        at java.awt.Component.dispatchEvent(Component.java:4404)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:605)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:286)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:201)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:191)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:186)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:178)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:139)
 
"AWT-Shutdown" prio=10 tid=0x0821e000 nid=0x4851 in Object.wait() [0x6fb15000..0x6fb15e30]
   java.lang.Thread.State: WAITING (on object monitor)
        at java.lang.Object.wait(Native Method)
        - waiting on <0xad204788> (a java.lang.Object)
        at java.lang.Object.wait(Object.java:502)
        at sun.awt.AWTAutoShutdown.run(AWTAutoShutdown.java:281)
        - locked <0xad204788> (a java.lang.Object)
        at java.lang.Thread.run(Thread.java:713)
 
"AWT-XAWT" daemon prio=10 tid=0x08210400 nid=0x4850 waiting for monitor entry [0x6fb66000..0x6fb66fb0]
   java.lang.Thread.State: BLOCKED (on object monitor)
        at java.awt.Frame.getExtendedState(Frame.java:808)
        - waiting to lock <0xad0e5b08> (a java.awt.Frame)
        at java.awt.Frame.paramString(Frame.java:970)
        at java.awt.Component.toString(Component.java:7814)
        at java.lang.String.valueOf(String.java:2838)
        at java.lang.StringBuilder.append(StringBuilder.java:128)
        at sun.awt.X11.XDecoratedPeer.requestWindowFocus(XDecoratedPeer.java:1170)
        at sun.awt.X11.XDecoratedPeer.handleWmTakeFocus(XDecoratedPeer.java:1041)
        at sun.awt.X11.XDecoratedPeer.handleClientMessage(XDecoratedPeer.java:1034)
        at sun.awt.X11.XBaseWindow.dispatchEvent(XBaseWindow.java:1074)
        at sun.awt.X11.XBaseWindow.dispatchToWindow(XBaseWindow.java:1056)
        at sun.awt.X11.XToolkit.dispatchEvent(XToolkit.java:504)
        at sun.awt.X11.XToolkit.run(XToolkit.java:599)
        at sun.awt.X11.XToolkit.run(XToolkit.java:534)
        at java.lang.Thread.run(Thread.java:713)
 
"Java2D Disposer" daemon prio=10 tid=0x081ec000 nid=0x484f in Object.wait() [0x6fc3d000..0x6fc3df30]
   java.lang.Thread.State: WAITING (on object monitor)
        at java.lang.Object.wait(Native Method)
        - waiting on <0xad1171d8> (a java.lang.ref.ReferenceQueue$Lock)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:133)
        - locked <0xad1171d8> (a java.lang.ref.ReferenceQueue$Lock)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:149)
        at sun.java2d.Disposer.run(Disposer.java:143)
        at java.lang.Thread.run(Thread.java:713)
 
"Low Memory Detector" daemon prio=10 tid=0x70002c00 nid=0x484d runnable [0x00000000..0x00000000]
   java.lang.Thread.State: RUNNABLE
 
"CompilerThread1" daemon prio=10 tid=0x70000800 nid=0x484c waiting on condition [0x00000000..0x6fffe2c8]
   java.lang.Thread.State: RUNNABLE
 
"CompilerThread0" daemon prio=10 tid=0x08108800 nid=0x484b waiting on condition [0x00000000..0x7018c358]
   java.lang.Thread.State: RUNNABLE
 
"Signal Dispatcher" daemon prio=10 tid=0x08107000 nid=0x484a waiting on condition [0x00000000..0x00000000]
   java.lang.Thread.State: RUNNABLE
 
"Finalizer" daemon prio=10 tid=0x080f7c00 nid=0x4849 in Object.wait() [0x70261000..0x70261e30]
   java.lang.Thread.State: WAITING (on object monitor)
        at java.lang.Object.wait(Native Method)
        - waiting on <0xad050b30> (a java.lang.ref.ReferenceQueue$Lock)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:133)
        - locked <0xad050b30> (a java.lang.ref.ReferenceQueue$Lock)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:149)
        at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:177)
 
"Reference Handler" daemon prio=10 tid=0x080f3400 nid=0x4848 in Object.wait() [0x702b2000..0x702b2fb0]
   java.lang.Thread.State: WAITING (on object monitor)
        at java.lang.Object.wait(Native Method)
        - waiting on <0xad050a38> (a java.lang.ref.Reference$Lock)
        at java.lang.Object.wait(Object.java:502)
        at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:133)
        - locked <0xad050a38> (a java.lang.ref.Reference$Lock)
 
"main" prio=10 tid=0x08050400 nid=0x4842 waiting on condition [0xb727b000..0xb727c2d8]
   java.lang.Thread.State: WAITING (parking)
        at sun.misc.Unsafe.park(Native Method)
        - parking to wait for  <0xad0ec368> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:769)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:802)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1132)
        at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:214)
        at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:290)
        at sun.awt.SunToolkit.awtLock(SunToolkit.java:269)
        at sun.awt.X11.XAwtState.getComponentMouseEntered(XAwtState.java:61)
        at sun.awt.X11.XGlobalCursorManager.findHeavyweightUnderCursor(XGlobalCursorManager.java:169)
        at sun.awt.X11.XGlobalCursorManager.findHeavyweightUnderCursor(XGlobalCursorManager.java:185)
        at sun.awt.GlobalCursorManager._updateCursor(GlobalCursorManager.java:179)
        at sun.awt.GlobalCursorManager.updateCursorImmediately(GlobalCursorManager.java:95)
        at sun.awt.X11.XComponentPeer.updateCursorImmediately(XComponentPeer.java:838)
        at java.awt.Component.updateCursorImmediately(Component.java:2846)
        at java.awt.Component.show(Component.java:1458)
        - locked <0xad0ce048> (a java.awt.Component$AWTTreeLock)
        at java.awt.Window.show(Window.java:903)
        at java.awt.Component.show(Component.java:1483)
        at java.awt.Component.setVisible(Component.java:1435)
        at java.awt.Window.setVisible(Window.java:875)
        at javasoft.sqe.jck.lib.awt.ComponentShow.makeVisible(ComponentShow.java:37)
        - locked <0xad0e5b08> (a java.awt.Frame)
        at javasoft.sqe.tests.api.java.awt.Component.getLocationOnScreenTests.Component2053(getLocationOnScreenTests.java:55)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:623)
        at javasoft.sqe.javatest.lib.MultiTest.invokeTestCase(MultiTest.java:406)
        at javasoft.sqe.javatest.lib.MultiTest.run(MultiTest.java:195)
        at javasoft.sqe.javatest.lib.MultiTest.run(MultiTest.java:127)
        at javasoft.sqe.tests.api.java.awt.Component.getLocationOnScreenTests.main(getLocationOnScreenTests.java:31)
 
"VM Thread" prio=10 tid=0x080ef400 nid=0x4847 runnable 
 
"GC task thread#0 (ParallelGC)" prio=10 tid=0x08057000 nid=0x4843 runnable 
 
"GC task thread#1 (ParallelGC)" prio=10 tid=0x08058800 nid=0x4844 runnable 
 
"GC task thread#2 (ParallelGC)" prio=10 tid=0x08059c00 nid=0x4845 runnable 
 
"GC task thread#3 (ParallelGC)" prio=10 tid=0x0805b400 nid=0x4846 runnable 
 
"VM Periodic Task Thread" prio=10 tid=0x70004c00 nid=0x484e waiting on condition 
 
JNI global references: 736
 
 
Found one Java-level deadlock:
=============================
"AWT-EventQueue-0":
  waiting to lock monitor 0x080f6f2c (object 0xad0ce048, a java.awt.Component$AWTTreeLock),
  which is held by "main"
"main":
  waiting for ownable synchronizer 0xad0ec368, (a java.util.concurrent.locks.ReentrantLock$NonfairSync),
  which is held by "AWT-XAWT"
"AWT-XAWT":
  waiting to lock monitor 0x080f6d9c (object 0xad0e5b08, a java.awt.Frame),
  which is held by "main"
 
Java stack information for the threads listed above:
===================================================
"AWT-EventQueue-0":
        at java.awt.Component.invalidate(Component.java:2692)
        - waiting to lock <0xad0ce048> (a java.awt.Component$AWTTreeLock)
        at java.awt.Container.invalidate(Container.java:1453)
        at java.awt.Window.dispatchEventImpl(Window.java:2556)
        at java.awt.Component.dispatchEvent(Component.java:4404)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:605)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:286)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:201)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:191)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:186)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:178)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:139)
"main":
        at sun.misc.Unsafe.park(Native Method)
        - parking to wait for  <0xad0ec368> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:769)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:802)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1132)
        at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:214)
        at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:290)
        at sun.awt.SunToolkit.awtLock(SunToolkit.java:269)
        at sun.awt.X11.XAwtState.getComponentMouseEntered(XAwtState.java:61)
        at sun.awt.X11.XGlobalCursorManager.findHeavyweightUnderCursor(XGlobalCursorManager.java:169)
        at sun.awt.X11.XGlobalCursorManager.findHeavyweightUnderCursor(XGlobalCursorManager.java:185)
        at sun.awt.GlobalCursorManager._updateCursor(GlobalCursorManager.java:179)
        at sun.awt.GlobalCursorManager.updateCursorImmediately(GlobalCursorManager.java:95)
        at sun.awt.X11.XComponentPeer.updateCursorImmediately(XComponentPeer.java:838)
        at java.awt.Component.updateCursorImmediately(Component.java:2846)
        at java.awt.Component.show(Component.java:1458)
        - locked <0xad0ce048> (a java.awt.Component$AWTTreeLock)
        at java.awt.Window.show(Window.java:903)
        at java.awt.Component.show(Component.java:1483)
        at java.awt.Component.setVisible(Component.java:1435)
        at java.awt.Window.setVisible(Window.java:875)
        at javasoft.sqe.jck.lib.awt.ComponentShow.makeVisible(ComponentShow.java:37)
        - locked <0xad0e5b08> (a java.awt.Frame)
        at javasoft.sqe.tests.api.java.awt.Component.getLocationOnScreenTests.Component2053(getLocationOnScreenTests.java:55)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:623)
        at javasoft.sqe.javatest.lib.MultiTest.invokeTestCase(MultiTest.java:406)
        at javasoft.sqe.javatest.lib.MultiTest.run(MultiTest.java:195)
        at javasoft.sqe.javatest.lib.MultiTest.run(MultiTest.java:127)
        at javasoft.sqe.tests.api.java.awt.Component.getLocationOnScreenTests.main(getLocationOnScreenTests.java:31)
"AWT-XAWT":
        at java.awt.Frame.getExtendedState(Frame.java:808)
        - waiting to lock <0xad0e5b08> (a java.awt.Frame)
        at java.awt.Frame.paramString(Frame.java:970)
        at java.awt.Component.toString(Component.java:7814)
        at java.lang.String.valueOf(String.java:2838)
        at java.lang.StringBuilder.append(StringBuilder.java:128)
        at sun.awt.X11.XDecoratedPeer.requestWindowFocus(XDecoratedPeer.java:1170)
        at sun.awt.X11.XDecoratedPeer.handleWmTakeFocus(XDecoratedPeer.java:1041)
        at sun.awt.X11.XDecoratedPeer.handleClientMessage(XDecoratedPeer.java:1034)
        at sun.awt.X11.XBaseWindow.dispatchEvent(XBaseWindow.java:1074)
        at sun.awt.X11.XBaseWindow.dispatchToWindow(XBaseWindow.java:1056)
        at sun.awt.X11.XToolkit.dispatchEvent(XToolkit.java:504)
        at sun.awt.X11.XToolkit.run(XToolkit.java:599)
        at sun.awt.X11.XToolkit.run(XToolkit.java:534)
        at java.lang.Thread.run(Thread.java:713)
 
Found 1 deadlock.
 
Heap
 PSYoungGen      total 6272K, used 1961K [0xad050000, 0xad750000, 0xb40f0000)
  eden space 5376K, 36% used [0xad050000,0xad23a458,0xad590000)
  from space 896K, 0% used [0xad670000,0xad670000,0xad750000)
  to   space 896K, 0% used [0xad590000,0xad590000,0xad670000)
 PSOldGen        total 57664K, used 0K [0x74af0000, 0x78340000, 0xad050000)
  object space 57664K, 0% used [0x74af0000,0x74af0000,0x78340000)
 PSPermGen       total 16384K, used 5719K [0x70af0000, 0x71af0000, 0x74af0000)
  object space 16384K, 34% used [0x70af0000,0x71085e88,0x71af0000)
Comments
EVALUATION Fixed as a part of 6724890.
16-06-2009
EVALUATION The issue will (most likely) be fixed by the changes for 6724890.
12-02-2009
EVALUATION The source of the problem is very close to what is described in 6708322. We should use 'objectLock' instead of 'this' when querying frames' extended state. See Component.getObjectLock() for additional info.
27-01-2009