Bug ID: JDK-6935447 Deadlock in XToolkit's shutdown hook

JDK-6935447 : Deadlock in XToolkit's shutdown hook

Type: Bug
Component: client-libs
Sub-Component: java.awt
Affected Version: 6,7,8,9,11,14

Priority: P3
Status: Open
Resolution: Unresolved
OS: linux
CPU: x86

Submitted: 2010-03-16
Updated: 2020-01-20

Versions (Unresolved/Resolved/Fixed)

The Version table provides details related to the release that this issue/RFE will be addressed.

Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.

To download the current JDK release, click here.

Other
tbdUnresolved

Related Reports

Duplicate :

JDK-8170263 - Deadlock in XToolkit shutdown

Description

JDK 6u17, Linux. When running

http://hg.netbeans.org/core-main/file/1223c455744c/core.windows/test/unit/src/org/netbeans/core/windows/services/NbPresenterTest.java

the test perhaps took too long and SIGTERM was sent by Ant's JUnit test runner to halt it; it however froze rather than exiting:

---%<---
2010-03-16 20:33:29
Full thread dump Java HotSpot(TM) Server VM (14.3-b01 mixed mode):

"Attach Listener" daemon prio=10 tid=0x0810a400 nid=0x8dc waiting on condition [0x00000000]
   java.lang.Thread.State: RUNNABLE

"Thread-1" prio=10 tid=0x0810b400 nid=0x7235 waiting on condition [0xfc9fe000]
   java.lang.Thread.State: WAITING (parking)
	at sun.misc.Unsafe.park(Native Method)
	- parking to wait for  <0x65c83ae8> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:747)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:778)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1114)
	at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:186)
	at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:262)
	at sun.awt.SunToolkit.awtLock(SunToolkit.java:236)
	at sun.awt.X11.XAtom.<init>(XAtom.java:252)
	at sun.awt.X11.XAtom.<init>(XAtom.java:219)
	at sun.awt.X11.XAtom.get(XAtom.java:161)
	at sun.awt.X11.XSystemTrayPeer.<clinit>(XSystemTrayPeer.java:29)
	at sun.awt.X11.XToolkit$2.run(XToolkit.java:256)

"SIGTERM handler" daemon prio=10 tid=0x08109400 nid=0x7233 in Object.wait() [0xfcdff000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <0x65c83c90> (a sun.awt.X11.XToolkit$2)
	at java.lang.Thread.join(Thread.java:1143)
	- locked <0x65c83c90> (a sun.awt.X11.XToolkit$2)
	at java.lang.Thread.join(Thread.java:1196)
	at java.lang.ApplicationShutdownHooks.runHooks(ApplicationShutdownHooks.java:79)
	at java.lang.ApplicationShutdownHooks$1.run(ApplicationShutdownHooks.java:24)
	at java.lang.Shutdown.runHooks(Shutdown.java:79)
	at java.lang.Shutdown.sequence(Shutdown.java:123)
	at java.lang.Shutdown.exit(Shutdown.java:168)
	- locked <0x5983e480> (a java.lang.Class for java.lang.Shutdown)
	at java.lang.Terminator$1.handle(Terminator.java:35)
	at sun.misc.Signal$1.run(Signal.java:195)
	at java.lang.Thread.run(Thread.java:619)

"Active Reference Queue Daemon" daemon prio=10 tid=0x7a0ed400 nid=0x6a72 in Object.wait() [0xfcfff000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <0x65c4eda0> (a java.lang.ref.ReferenceQueue$Lock)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:118)
	- locked <0x65c4eda0> (a java.lang.ref.ReferenceQueue$Lock)
	at org.openide.util.lookup.implspi.ActiveQueue$Impl.run(ActiveQueue.java:62)
	at java.lang.Thread.run(Thread.java:619)

"Timer-0" daemon prio=10 tid=0x7a007000 nid=0x6a71 in Object.wait() [0xfd1ff000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <0x65c4ee38> (a java.util.TaskQueue)
	at java.lang.Object.wait(Object.java:485)
	at java.util.TimerThread.mainLoop(Timer.java:483)
	- locked <0x65c4ee38> (a java.util.TaskQueue)
	at java.util.TimerThread.run(Timer.java:462)

"AWT-EventQueue-0" prio=10 tid=0x7a0eb800 nid=0x6a70 runnable [0xfd3fe000]
   java.lang.Thread.State: RUNNABLE
	at sun.awt.X11.XlibWrapper.XQueryTree(Native Method)
	at sun.awt.X11.XQueryTree.execute(XQueryTree.java:42)
	at sun.awt.X11.XQueryTree.execute(XQueryTree.java:26)
	at sun.awt.X11.XComponentPeer.restack(XComponentPeer.java:1443)
	- locked <0x65c480e8> (a java.awt.Component$AWTTreeLock)
	at java.awt.Component.addNotify(Component.java:6686)
	- locked <0x65c480e8> (a java.awt.Component$AWTTreeLock)
	at java.awt.Container.addNotify(Container.java:2567)
	- locked <0x65c480e8> (a java.awt.Component$AWTTreeLock)
	at java.awt.Window.addNotify(Window.java:662)
	- locked <0x65c480e8> (a java.awt.Component$AWTTreeLock)
	at java.awt.Dialog.addNotify(Dialog.java:742)
	- locked <0x65c480e8> (a java.awt.Component$AWTTreeLock)
	at org.netbeans.core.windows.services.NbPresenter.addNotify(NbPresenter.java:430)
	at java.awt.Window.pack(Window.java:703)
	at org.netbeans.core.windows.services.NbPresenter.initialize(NbPresenter.java:254)
	at org.netbeans.core.windows.services.NbPresenter.<init>(NbPresenter.java:184)
	at org.netbeans.core.windows.services.NbDialog.<init>(NbDialog.java:64)
	at org.netbeans.core.windows.services.NbPresenterTest.testNbPresenterComparator(NbPresenterTest.java:162)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at junit.framework.TestCase.runTest(TestCase.java:168)
	at org.netbeans.junit.NbTestCase.access$200(NbTestCase.java:89)
	at org.netbeans.junit.NbTestCase$2.doSomething(NbTestCase.java:345)
	at org.netbeans.junit.NbTestCase$1Guard.run(NbTestCase.java:274)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

"AWT-Shutdown" prio=10 tid=0x7a0ea800 nid=0x6a6f in Object.wait() [0xfd5ff000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <0x65c5eb68> (a java.lang.Object)
	at java.lang.Object.wait(Object.java:485)
	at sun.awt.AWTAutoShutdown.run(AWTAutoShutdown.java:259)
	- locked <0x65c5eb68> (a java.lang.Object)
	at java.lang.Thread.run(Thread.java:619)

"AWT-XAWT" daemon prio=10 tid=0x7a0ea000 nid=0x6a6e waiting on condition [0xfd7fe000]
   java.lang.Thread.State: WAITING (parking)
	at sun.misc.Unsafe.park(Native Method)
	- parking to wait for  <0x65c83ae8> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:747)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:778)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1114)
	at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:186)
	at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:262)
	at sun.awt.SunToolkit.awtLock(SunToolkit.java:236)
	at sun.awt.X11.XToolkit.waitForEvents(Native Method)
	at sun.awt.X11.XToolkit.run(XToolkit.java:548)
	at sun.awt.X11.XToolkit.run(XToolkit.java:523)
	at java.lang.Thread.run(Thread.java:619)

"Java2D Disposer" daemon prio=10 tid=0x08298c00 nid=0x6a6d in Object.wait() [0xfd9ff000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <0x65c5ef10> (a java.lang.ref.ReferenceQueue$Lock)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:118)
	- locked <0x65c5ef10> (a java.lang.ref.ReferenceQueue$Lock)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:134)
	at sun.java2d.Disposer.run(Disposer.java:125)
	at java.lang.Thread.run(Thread.java:619)

"Low Memory Detector" daemon prio=10 tid=0x7a014400 nid=0x6a6b runnable [0x00000000]
   java.lang.Thread.State: RUNNABLE

"CompilerThread1" daemon prio=10 tid=0x7a012000 nid=0x6a6a waiting on condition [0x00000000]
   java.lang.Thread.State: RUNNABLE

"CompilerThread0" daemon prio=10 tid=0x7a010800 nid=0x6a69 waiting on condition [0x00000000]
   java.lang.Thread.State: RUNNABLE

"Signal Dispatcher" daemon prio=10 tid=0x7a00f000 nid=0x6a68 runnable [0x00000000]
   java.lang.Thread.State: RUNNABLE

"Finalizer" daemon prio=10 tid=0x08104400 nid=0x6a67 in Object.wait() [0xfe5ff000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <0x77ec0018> (a java.lang.ref.ReferenceQueue$Lock)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:118)
	- locked <0x77ec0018> (a java.lang.ref.ReferenceQueue$Lock)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:134)
	at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)

"Reference Handler" daemon prio=10 tid=0x08102c00 nid=0x6a66 in Object.wait() [0xfe7ff000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <0x65c2f310> (a java.lang.ref.Reference$Lock)
	at java.lang.Object.wait(Object.java:485)
	at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:116)
	- locked <0x65c2f310> (a java.lang.ref.Reference$Lock)

"main" prio=10 tid=0x0805fc00 nid=0x6a60 in Object.wait() [0xff3ff000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <0x77941d08> (a org.netbeans.junit.NbTestCase$2)
	at org.netbeans.junit.NbTestCase$1Guard.waitFinished(NbTestCase.java:294)
	- locked <0x77941d08> (a org.netbeans.junit.NbTestCase$2)
	at org.netbeans.junit.NbTestCase.runBare(NbTestCase.java:360)
	at junit.framework.TestResult$1.protect(TestResult.java:110)
	at junit.framework.TestResult.runProtected(TestResult.java:128)
	at junit.framework.TestResult.run(TestResult.java:113)
	at junit.framework.TestCase.run(TestCase.java:124)
	at org.netbeans.junit.NbTestCase.run(NbTestCase.java:214)
	at junit.framework.TestSuite.runTest(TestSuite.java:232)
	at junit.framework.TestSuite.run(TestSuite.java:227)
	at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:79)
	at junit.framework.JUnit4TestAdapter.run(JUnit4TestAdapter.java:39)
	at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:422)
	at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:931)
	at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:785)

"VM Thread" prio=10 tid=0x080fec00 nid=0x6a65 runnable 

"GC task thread#0 (ParallelGC)" prio=10 tid=0x08066800 nid=0x6a61 runnable 

"GC task thread#1 (ParallelGC)" prio=10 tid=0x08067c00 nid=0x6a62 runnable 

"GC task thread#2 (ParallelGC)" prio=10 tid=0x08069400 nid=0x6a63 runnable 

"GC task thread#3 (ParallelGC)" prio=10 tid=0x0806a800 nid=0x6a64 runnable 

"VM Periodic Task Thread" prio=10 tid=0x7a016400 nid=0x6a6c waiting on condition 

JNI global references: 1126
---%<---

This code does not use the system tray to my knowledge.
Similar deadlock closing org.netbeans.core.output2.IOExtensionsTest in JDK 6u31, causing continuous integration to hang:

Full thread dump Java HotSpot(TM) 64-Bit Server VM (20.6-b01 mixed mode):

"Attach Listener" daemon prio=10 tid=0x00007f5fd0002000 nid=0x5ef2 waiting on condition [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

"SIGTERM handler" daemon prio=10 tid=0x00007f5fd0001000 nid=0x578d waiting for monitor entry [0x00007f5fd5671000]
   java.lang.Thread.State: BLOCKED (on object monitor)
	at java.lang.Shutdown.exit(Shutdown.java:168)
	- waiting to lock <0x00000000dff023d0> (a java.lang.Class for java.lang.Shutdown)
	at java.lang.Terminator$1.handle(Terminator.java:35)
	at sun.misc.Signal$1.run(Signal.java:195)
	at java.lang.Thread.run(Thread.java:662)

"XToolkit-Shutdown-Thread" prio=10 tid=0x00007f5ffc279000 nid=0x5698 runnable [0x00007f5fd536d000]
   java.lang.Thread.State: RUNNABLE
	at sun.awt.X11.XlibWrapper.InternAtom(Native Method)
	at sun.awt.X11.XAtom.<init>(XAtom.java:254)
	at sun.awt.X11.XAtom.<init>(XAtom.java:219)
	at sun.awt.X11.XAtom.get(XAtom.java:161)
	at sun.awt.X11.XSystemTrayPeer.<clinit>(XSystemTrayPeer.java:29)
	at sun.awt.X11.XToolkit$1$1.run(XToolkit.java:283)

"TimerQueue" daemon prio=10 tid=0x00007f5fb408a800 nid=0x568e in Object.wait() [0x00007f5fd5772000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <0x00000000fa106f88> (a javax.swing.TimerQueue)
	at javax.swing.TimerQueue.run(TimerQueue.java:232)
	- locked <0x00000000fa106f88> (a javax.swing.TimerQueue)
	at java.lang.Thread.run(Thread.java:662)

"Active Reference Queue Daemon" daemon prio=10 tid=0x00007f5fb405d000 nid=0x568b in Object.wait() [0x00007f5fd5974000]
   java.lang.Thread.State: TIMED_WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <0x00000000f9f84bd8> (a java.lang.ref.ReferenceQueue$Lock)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:118)
	- locked <0x00000000f9f84bd8> (a java.lang.ref.ReferenceQueue$Lock)
	at org.openide.util.lookup.implspi.ActiveQueue$Daemon.run(ActiveQueue.java:174)
	- locked <0x00000000f9f84bd8> (a java.lang.ref.ReferenceQueue$Lock)

"AWT-XAWT" daemon prio=10 tid=0x00007f5ffc262800 nid=0x5688 waiting on condition [0x00007f5fd5c76000]
   java.lang.Thread.State: WAITING (parking)
	at sun.misc.Unsafe.park(Native Method)
	- parking to wait for  <0x00000000f99f39e0> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:156)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:811)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:842)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1178)
	at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:186)
	at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:262)
	at sun.awt.SunToolkit.awtLock(SunToolkit.java:234)
	at sun.awt.X11.XToolkit.waitForEvents(Native Method)
	at sun.awt.X11.XToolkit.run(XToolkit.java:579)
	at sun.awt.X11.XToolkit.run(XToolkit.java:543)
	at java.lang.Thread.run(Thread.java:662)

"Java2D Disposer" daemon prio=10 tid=0x00007f5ffc21e000 nid=0x5687 in Object.wait() [0x00007f5fd5e80000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <0x00000000f9a1a840> (a java.lang.ref.ReferenceQueue$Lock)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:118)
	- locked <0x00000000f9a1a840> (a java.lang.ref.ReferenceQueue$Lock)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:134)
	at sun.java2d.Disposer.run(Disposer.java:127)
	at java.lang.Thread.run(Thread.java:662)

"Low Memory Detector" daemon prio=10 tid=0x00007f5ffc092800 nid=0x5685 runnable [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

"C2 CompilerThread1" daemon prio=10 tid=0x00007f5ffc090800 nid=0x5684 waiting on condition [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

"C2 CompilerThread0" daemon prio=10 tid=0x00007f5ffc08d800 nid=0x5683 waiting on condition [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

"Signal Dispatcher" daemon prio=10 tid=0x00007f5ffc08b800 nid=0x5682 runnable [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

"Finalizer" daemon prio=10 tid=0x00007f5ffc06f000 nid=0x5681 in Object.wait() [0x00007f5ff89f8000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <0x00000000f9561300> (a java.lang.ref.ReferenceQueue$Lock)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:118)
	- locked <0x00000000f9561300> (a java.lang.ref.ReferenceQueue$Lock)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:134)
	at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)

"Reference Handler" daemon prio=10 tid=0x00007f5ffc06d000 nid=0x5680 in Object.wait() [0x00007f5ff8af9000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <0x00000000f95611d8> (a java.lang.ref.Reference$Lock)
	at java.lang.Object.wait(Object.java:485)
	at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:116)
	- locked <0x00000000f95611d8> (a java.lang.ref.Reference$Lock)

"main" prio=10 tid=0x00007f5ffc008800 nid=0x5679 in Object.wait() [0x00007f6000eda000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <0x00000000f9a5d600> (a sun.awt.X11.XToolkit$1$1)
	at java.lang.Thread.join(Thread.java:1186)
	- locked <0x00000000f9a5d600> (a sun.awt.X11.XToolkit$1$1)
	at java.lang.Thread.join(Thread.java:1239)
	at java.lang.ApplicationShutdownHooks.runHooks(ApplicationShutdownHooks.java:79)
	at java.lang.ApplicationShutdownHooks$1.run(ApplicationShutdownHooks.java:24)
	at java.lang.Shutdown.runHooks(Shutdown.java:79)
	at java.lang.Shutdown.sequence(Shutdown.java:123)
	at java.lang.Shutdown.exit(Shutdown.java:168)
	- locked <0x00000000dff023d0> (a java.lang.Class for java.lang.Shutdown)
	at java.lang.Runtime.exit(Runtime.java:90)
	at java.lang.System.exit(System.java:904)
	at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:791)

"VM Thread" prio=10 tid=0x00007f5ffc066800 nid=0x567f runnable 

"GC task thread#0 (ParallelGC)" prio=10 tid=0x00007f5ffc01b800 nid=0x567b runnable 

"GC task thread#1 (ParallelGC)" prio=10 tid=0x00007f5ffc01d800 nid=0x567c runnable 

"GC task thread#2 (ParallelGC)" prio=10 tid=0x00007f5ffc01f800 nid=0x567d runnable 

"GC task thread#3 (ParallelGC)" prio=10 tid=0x00007f5ffc021000 nid=0x567e runnable 

"VM Periodic Task Thread" prio=10 tid=0x00007f5ffc09d000 nid=0x5686 waiting on condition 

JNI global references: 1368

Comments

Observed similar deadlock on Jdk14 build 24 on linux machine during SBR execution. ----------System.err:(0/0)---------- result: Passed. Compilation successful #section:testng ----------messages:(218/14711)---------- command: testng ComboBoxDemoTest reason: User specified action: run testng/timeout=600 ComboBoxDemoTest Mode: othervm Additional options from @modules: --add-modules java.desktop,java.logging Timeout information: Running jstack on process 2126 2019-11-23 05:00:04 Full thread dump Java HotSpot(TM) 64-Bit Server VM (14-ea+24-1107 mixed mode, sharing): Threads class SMR info: _java_thread_list=0x00007f2858001c70, length=16, elements={ 0x00007f28ac029800, 0x00007f28ac1e9000, 0x00007f28ac1eb000, 0x00007f28ac1f0800, 0x00007f28ac1f2800, 0x00007f28ac1f4800, 0x00007f28ac1f6800, 0x00007f28ac235000, 0x00007f28ac28c800, 0x00007f28ac28e800, 0x00007f28ac2bc800, 0x00007f283020d000, 0x00007f2830210000, 0x00007f2830292800, 0x00007f2830297000, 0x00007f2858001000 } "main" #1 prio=5 os_prio=0 cpu=41.99ms elapsed=4800.20s tid=0x00007f28ac029800 nid=0x851 in Object.wait() [0x00007f28b21db000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(java.base@14-ea/Native Method) - waiting on <0x00000007091e2600> (a java.lang.Thread) at java.lang.Thread.join(java.base@14-ea/Thread.java:1304) - locked <0x00000007091e2600> (a java.lang.Thread) at java.lang.Thread.join(java.base@14-ea/Thread.java:1372) at com.sun.javatest.regtest.agent.MainWrapper.main(MainWrapper.java:74) "Reference Handler" #2 daemon prio=10 os_prio=0 cpu=0.51ms elapsed=4800.19s tid=0x00007f28ac1e9000 nid=0x858 waiting on condition [0x00007f287b076000] java.lang.Thread.State: RUNNABLE at java.lang.ref.Reference.waitForReferencePendingList(java.base@14-ea/Native Method) at java.lang.ref.Reference.processPendingReferences(java.base@14-ea/Reference.java:241) at java.lang.ref.Reference$ReferenceHandler.run(java.base@14-ea/Reference.java:213) "Finalizer" #3 daemon prio=8 os_prio=0 cpu=0.25ms elapsed=4800.19s tid=0x00007f28ac1eb000 nid=0x859 in Object.wait() [0x00007f287af75000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(java.base@14-ea/Native Method) - waiting on <0x00000007091efba8> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(java.base@14-ea/ReferenceQueue.java:155) - locked <0x00000007091efba8> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(java.base@14-ea/ReferenceQueue.java:176) at java.lang.ref.Finalizer$FinalizerThread.run(java.base@14-ea/Finalizer.java:170) "Signal Dispatcher" #4 daemon prio=9 os_prio=0 cpu=0.24ms elapsed=4800.19s tid=0x00007f28ac1f0800 nid=0x85a runnable [0x0000000000000000] java.lang.Thread.State: RUNNABLE "C2 CompilerThread0" #5 daemon prio=9 os_prio=0 cpu=287.72ms elapsed=4800.19s tid=0x00007f28ac1f2800 nid=0x85b waiting on condition [0x0000000000000000] java.lang.Thread.State: RUNNABLE No compile task "C1 CompilerThread0" #8 daemon prio=9 os_prio=0 cpu=305.85ms elapsed=4800.19s tid=0x00007f28ac1f4800 nid=0x85c waiting on condition [0x0000000000000000] java.lang.Thread.State: RUNNABLE No compile task "Sweeper thread" #9 daemon prio=9 os_prio=0 cpu=6.59ms elapsed=4800.19s tid=0x00007f28ac1f6800 nid=0x85d runnable [0x0000000000000000] java.lang.Thread.State: RUNNABLE "Common-Cleaner" #10 daemon prio=8 os_prio=0 cpu=3.88ms elapsed=4800.18s tid=0x00007f28ac235000 nid=0x85e in Object.wait() [0x00007f287aa70000] java.lang.Thread.State: TIMED_WAITING (on object monitor) at java.lang.Object.wait(java.base@14-ea/Native Method) - waiting on <no object reference available> at java.lang.ref.ReferenceQueue.remove(java.base@14-ea/ReferenceQueue.java:155) - locked <0x00000007091e3538> (a java.lang.ref.ReferenceQueue$Lock) at jdk.internal.ref.CleanerImpl.run(java.base@14-ea/CleanerImpl.java:148) at java.lang.Thread.run(java.base@14-ea/Thread.java:833) at jdk.internal.misc.InnocuousThread.run(java.base@14-ea/InnocuousThread.java:134) "Service Thread" #11 daemon prio=9 os_prio=0 cpu=0.12ms elapsed=4800.17s tid=0x00007f28ac28c800 nid=0x860 runnable [0x0000000000000000] java.lang.Thread.State: RUNNABLE "Notification Thread" #12 daemon prio=9 os_prio=0 cpu=0.05ms elapsed=4800.17s tid=0x00007f28ac28e800 nid=0x861 runnable [0x0000000000000000] java.lang.Thread.State: RUNNABLE "MainThread" #14 prio=5 os_prio=0 cpu=362.21ms elapsed=4800.16s tid=0x00007f28ac2bc800 nid=0x863 waiting on condition [0x00007f287a569000] java.lang.Thread.State: WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@14-ea/Native Method) - parking to wait for <0x00000007095bff20> (a java.util.concurrent.locks.ReentrantLock$NonfairSync) at java.util.concurrent.locks.LockSupport.park(java.base@14-ea/LockSupport.java:211) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(java.base@14-ea/AbstractQueuedSynchronizer.java:714) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(java.base@14-ea/AbstractQueuedSynchronizer.java:937) at java.util.concurrent.locks.ReentrantLock$Sync.lock(java.base@14-ea/ReentrantLock.java:153) at java.util.concurrent.locks.ReentrantLock.lock(java.base@14-ea/ReentrantLock.java:322) at sun.awt.SunToolkit.awtLock(java.desktop@14-ea/SunToolkit.java:195) at sun.awt.X11.XToolkit.getNumberOfButtons(java.desktop@14-ea/XToolkit.java:1698) at java.awt.event.MouseEvent.<clinit>(java.desktop@14-ea/MouseEvent.java:403) at org.netbeans.jemmy.drivers.input.MouseEventDriver.dispatchEvent(MouseEventDriver.java:180) at org.netbeans.jemmy.drivers.input.MouseEventDriver.moveMouse(MouseEventDriver.java:75) at org.netbeans.jemmy.drivers.input.MouseEventDriver.clickMouse(MouseEventDriver.java:85) at org.netbeans.jemmy.drivers.buttons.ButtonMouseDriver.push(ButtonMouseDriver.java:73) at org.netbeans.jemmy.drivers.lists.JComboMouseDriver.selectItem(JComboMouseDriver.java:71) at org.netbeans.jemmy.operators.JComboBoxOperator.selectItem(JComboBoxOperator.java:612) at ComboBoxDemoTest.comboBoxChecker(ComboBoxDemoTest.java:82) at ComboBoxDemoTest.test(ComboBoxDemoTest.java:75) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(java.base@14-ea/Native Method) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(java.base@14-ea/NativeMethodAccessorImpl.java:62) at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(java.base@14-ea/DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(java.base@14-ea/Method.java:564) at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:85) at org.testng.internal.Invoker.invokeMethod(Invoker.java:639) at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:821) at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1131) at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:124) at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:108) at org.testng.TestRunner.privateRun(TestRunner.java:773) at org.testng.TestRunner.run(TestRunner.java:623) at org.testng.SuiteRunner.runTest(SuiteRunner.java:357) at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:352) at org.testng.SuiteRunner.privateRun(SuiteRunner.java:310) at org.testng.SuiteRunner.run(SuiteRunner.java:259) at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52) at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86) at org.testng.TestNG.runSuitesSequentially(TestNG.java:1185) at org.testng.TestNG.runSuitesLocally(TestNG.java:1110) at org.testng.TestNG.run(TestNG.java:1018) at com.sun.javatest.regtest.agent.TestNGRunner.main(TestNGRunner.java:94) at com.sun.javatest.regtest.agent.TestNGRunner.main(TestNGRunner.java:54) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(java.base@14-ea/Native Method) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(java.base@14-ea/NativeMethodAccessorImpl.java:62) at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(java.base@14-ea/DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(java.base@14-ea/Method.java:564) at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127) at java.lang.Thread.run(java.base@14-ea/Thread.java:833) "Java2D Disposer" #16 daemon prio=10 os_prio=0 cpu=0.11ms elapsed=4800.02s tid=0x00007f283020d000 nid=0x86a in Object.wait() [0x00007f28781c6000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(java.base@14-ea/Native Method) - waiting on <0x00000007091e9600> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(java.base@14-ea/ReferenceQueue.java:155) - locked <0x00000007091e9600> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(java.base@14-ea/ReferenceQueue.java:176) at sun.java2d.Disposer.run(java.desktop@14-ea/Disposer.java:144) at java.lang.Thread.run(java.base@14-ea/Thread.java:833) "AWT-XAWT" #17 daemon prio=6 os_prio=0 cpu=8.28ms elapsed=4800.02s tid=0x00007f2830210000 nid=0x86c in Object.wait() [0x00007f282ebeb000] java.lang.Thread.State: RUNNABLE at sun.awt.X11.XWindow.handleXCrossingEvent(java.desktop@14-ea/XWindow.java:973) - waiting on the Class initialization monitor for java.awt.event.MouseEvent at sun.awt.X11.XContentWindow.handleXCrossingEvent(java.desktop@14-ea/XContentWindow.java:45) at sun.awt.X11.XBaseWindow.dispatchEvent(java.desktop@14-ea/XBaseWindow.java:1150) at sun.awt.X11.XBaseWindow.dispatchToWindow(java.desktop@14-ea/XBaseWindow.java:1108) at sun.awt.X11.XToolkit.dispatchEvent(java.desktop@14-ea/XToolkit.java:625) at sun.awt.X11.XToolkit.run(java.desktop@14-ea/XToolkit.java:740) at sun.awt.X11.XToolkit.run(java.desktop@14-ea/XToolkit.java:656) at java.lang.Thread.run(java.base@14-ea/Thread.java:833) "AWT-Shutdown" #20 prio=5 os_prio=0 cpu=2.00ms elapsed=4799.96s tid=0x00007f2830292800 nid=0x86d in Object.wait() [0x00007f282eaea000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(java.base@14-ea/Native Method) - waiting on <0x00000007091e9840> (a java.lang.Object) at java.lang.Object.wait(java.base@14-ea/Object.java:321) at sun.awt.AWTAutoShutdown.run(java.desktop@14-ea/AWTAutoShutdown.java:291) - locked <0x00000007091e9840> (a java.lang.Object) at java.lang.Thread.run(java.base@14-ea/Thread.java:833) "AWT-EventQueue-0" #19 prio=6 os_prio=0 cpu=49.80ms elapsed=4799.96s tid=0x00007f2830297000 nid=0x86e waiting on condition [0x00007f282e9e8000] java.lang.Thread.State: WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@14-ea/Native Method) - parking to wait for <0x00000007095bff20> (a java.util.concurrent.locks.ReentrantLock$NonfairSync) at java.util.concurrent.locks.LockSupport.park(java.base@14-ea/LockSupport.java:211) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(java.base@14-ea/AbstractQueuedSynchronizer.java:714) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(java.base@14-ea/AbstractQueuedSynchronizer.java:937) at java.util.concurrent.locks.ReentrantLock$Sync.lock(java.base@14-ea/ReentrantLock.java:153) at java.util.concurrent.locks.ReentrantLock.lock(java.base@14-ea/ReentrantLock.java:322) at sun.awt.SunToolkit.awtLock(java.desktop@14-ea/SunToolkit.java:195) at sun.awt.X11.XAwtState.getComponentMouseEntered(java.desktop@14-ea/XAwtState.java:61) at sun.awt.X11.XGlobalCursorManager.findHeavyweightUnderCursor(java.desktop@14-ea/XGlobalCursorManager.java:144) at sun.awt.X11.XGlobalCursorManager.findHeavyweightUnderCursor(java.desktop@14-ea/XGlobalCursorManager.java
20-01-2020
EVALUATION In the current version of the AWT shutdown hook in jdk7, there is an additional call to freeXKB that calls appropriate xkb-specific function and this call also guarded by the awtLock lock. So, this is no easy to clear the hook from the usage of the AWT lock (moreover, the failure still would be reproducible if the testcase were using the system tray). The failure also might be considered as a "hang" that occurs when the XComponentPeer.restack method (called from the EDT) calls the native XQueryTree method of the XlibWrapper. Before entering the XQueryTree method, the awtLock is acquired and apparently the XQueryTree never exists and as a result the AWT shutdown hook fails to acquire the awtLock lock. So, this would be very helpful to understand why the test execution takes too long: is that because the EDT enters the Window.pack (->restack->XQueryTree) and it never exits for some reason?
07-07-2010
EVALUATION Dispatching this bug to classes_awt as the deadlock happens in AWT code.
11-05-2010
SUGGESTED FIX A shutdown hook should not acquire any locks. To ensure that XSystemTrayPeer.getPeerInstance does nothing except return a field, the static fields other than peerInstance in the class should be made nonstatic, or else made nonfinal and initialized if and when the constructor is first called. Alternately, move the shutdown hook to inside XSystemTrayPeer itself, probably one per instance. This would avoid creating the shutdown hook unless and until the system tray is actually used, keep related code closer together, and would also prevent the deadlock. For example, inside the XSystemTrayPeer constructor: Runtime.getRuntime().addShutdownHook(new Thread() { public void run() { dispose(); if (XToolkit.log.isLoggable(Level.FINE)) { XToolkit.dumpPeers(); } } });
16-03-2010