Phil & Sergey, I am testing IcedTea-Web 1.7 with OpenJDK11-28 and experienced many times the GUI hanging with AWT-EventQueue threads in the WAITING state (SequencedEvent) at EventQueue.getNextEvent().
I fixed the netx code (EDT violations in swing code) but the problem is still happening randomly. This JavaWS implementation displays several JDialogs: Splash screen + download dialogs + Security prompts. When the application is hanging, I can not click on the Proceed/Cancel buttons of the Security dialogs and it is blocked forever. Are you aware about this problem ? As I can reproduce the problem, I can provide a heap-dump if you need. Here is a complete thread dump: Full thread dump OpenJDK 64-Bit Server VM (11+28 mixed mode): Threads class SMR info: _java_thread_list=0x00007f94500170a0, length=44, elements={ 0x00007f94b0013800, 0x00007f94b01a3800, 0x00007f94b01a7800, 0x00007f94b01ba800, 0x00007f94b01bc800, 0x00007f94b01be800, 0x00007f94b01c0800, 0x00007f94b01ff800, 0x00007f94b02d8800, 0x00007f94b0462000, 0x00007f94b0467800, 0x00007f94b046b000, 0x00007f94b04d7800, 0x00007f9434004000, 0x00007f943400e000, 0x00007f94b0aa8800, 0x00007f94b0b2b000, 0x00007f94b0b43800, 0x00007f942c075000, 0x00007f9428017800, 0x00007f9428024000, 0x00007f942c078000, 0x00007f942c15b000, 0x00007f942c1d0000, 0x00007f942c1ce800, 0x00007f942c195800, 0x00007f942c191000, 0x00007f942c192000, 0x00007f942c193000, 0x00007f942c1c7800, 0x00007f942c1c9000, 0x00007f942c1ca800, 0x00007f942c1cc800, 0x00007f942c166800, 0x00007f942c168000, 0x00007f942c16a000, 0x00007f942c16c000, 0x00007f942c16d800, 0x00007f942c16e800, 0x00007f942c16f800, 0x00007f942c170800, 0x00007f942c1d8000, 0x00007f942c1d2000, 0x00007f942c1d3800 } "main" #1 prio=5 os_prio=0 cpu=728,96ms elapsed=28,25s tid=0x00007f94b0013800 nid=0x15e1 in Object.wait() [0x00007f94b9bee000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(java.base@11/Native Method) - waiting on <0x00000000cd9c0c78> (a net.sourceforge.jnlp.Launcher$TgThread) at java.lang.Thread.join(java.base@11/Thread.java:1305) - waiting to re-lock in wait() <0x00000000cd9c0c78> (a net.sourceforge.jnlp.Launcher$TgThread) at java.lang.Thread.join(java.base@11/Thread.java:1379) at net.sourceforge.jnlp.Launcher.launch(java.desktop@11/Launcher.java:258) at net.sourceforge.jnlp.Launcher.launch(java.desktop@11/Launcher.java:208) at net.sourceforge.jnlp.Launcher.launch(java.desktop@11/Launcher.java:287) at net.sourceforge.jnlp.runtime.JnlpBoot.run(java.desktop@11/JnlpBoot.java:67) at net.sourceforge.jnlp.runtime.Boot.run(java.desktop@11/Boot.java:270) at net.sourceforge.jnlp.runtime.Boot.run(java.desktop@11/Boot.java:65) at java.security.AccessController.doPrivileged(java.base@11/Native Method) at net.sourceforge.jnlp.runtime.Boot.main(java.desktop@11/Boot.java:210) "Reference Handler" #2 daemon prio=10 os_prio=0 cpu=2,57ms elapsed=28,24s tid=0x00007f94b01a3800 nid=0x15e8 waiting on condition [0x00007f9490efc000] java.lang.Thread.State: RUNNABLE at java.lang.ref.Reference.waitForReferencePendingList(java.base@11/Native Method) at java.lang.ref.Reference.processPendingReferences(java.base@11/Reference.java:241) at java.lang.ref.Reference$ReferenceHandler.run(java.base@11/Reference.java:213) "Finalizer" #3 daemon prio=8 os_prio=0 cpu=0,70ms elapsed=28,24s tid=0x00007f94b01a7800 nid=0x15e9 in Object.wait() [0x00007f9490dfb000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(java.base@11/Native Method) - waiting on <0x00000000c01f16d0> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(java.base@11/ReferenceQueue.java:155) - waiting to re-lock in wait() <0x00000000c01f16d0> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(java.base@11/ReferenceQueue.java:176) at java.lang.ref.Finalizer$FinalizerThread.run(java.base@11/Finalizer.java:170) "Signal Dispatcher" #4 daemon prio=9 os_prio=0 cpu=0,29ms elapsed=28,23s tid=0x00007f94b01ba800 nid=0x15ea waiting on condition [0x0000000000000000] java.lang.Thread.State: RUNNABLE "C2 CompilerThread0" #5 daemon prio=9 os_prio=0 cpu=2917,46ms elapsed=28,23s tid=0x00007f94b01bc800 nid=0x15eb waiting on condition [0x0000000000000000] java.lang.Thread.State: RUNNABLE No compile task "C1 CompilerThread0" #7 daemon prio=9 os_prio=0 cpu=1338,81ms elapsed=28,23s tid=0x00007f94b01be800 nid=0x15ec waiting on condition [0x0000000000000000] java.lang.Thread.State: RUNNABLE No compile task "Sweeper thread" #8 daemon prio=9 os_prio=0 cpu=35,43ms elapsed=28,23s tid=0x00007f94b01c0800 nid=0x15ed runnable [0x0000000000000000] java.lang.Thread.State: RUNNABLE "Common-Cleaner" #9 daemon prio=8 os_prio=0 cpu=0,66ms elapsed=28,21s tid=0x00007f94b01ff800 nid=0x15ee in Object.wait() [0x00007f94904e3000] java.lang.Thread.State: TIMED_WAITING (on object monitor) at java.lang.Object.wait(java.base@11/Native Method) - waiting on <0x00000000c01f2140> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(java.base@11/ReferenceQueue.java:155) - waiting to re-lock in wait() <0x00000000c01f2140> (a java.lang.ref.ReferenceQueue$Lock) at jdk.internal.ref.CleanerImpl.run(java.base@11/CleanerImpl.java:148) at java.lang.Thread.run(java.base@11/Thread.java:834) at jdk.internal.misc.InnocuousThread.run(java.base@11/InnocuousThread.java:134) "Service Thread" #10 daemon prio=9 os_prio=0 cpu=0,04ms elapsed=28,15s tid=0x00007f94b02d8800 nid=0x15f0 runnable [0x0000000000000000] java.lang.Thread.State: RUNNABLE "Java2D Disposer" #12 daemon prio=10 os_prio=0 cpu=0,82ms elapsed=28,03s tid=0x00007f94b0462000 nid=0x15f5 in Object.wait() [0x00007f944ddd7000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(java.base@11/Native Method) - waiting on <0x00000000c01f2898> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(java.base@11/ReferenceQueue.java:155) - waiting to re-lock in wait() <0x00000000c01f2898> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(java.base@11/ReferenceQueue.java:176) at sun.java2d.Disposer.run(java.desktop@11/Disposer.java:144) at java.lang.Thread.run(java.base@11/Thread.java:834) "AWT-XAWT" #13 daemon prio=6 os_prio=0 cpu=122,01ms elapsed=28,03s tid=0x00007f94b0467800 nid=0x15f6 runnable [0x00007f944dcd6000] java.lang.Thread.State: RUNNABLE at sun.awt.X11.XToolkit.waitForEvents(java.desktop@11/Native Method) at sun.awt.X11.XToolkit.run(java.desktop@11/XToolkit.java:682) at sun.awt.X11.XToolkit.run(java.desktop@11/XToolkit.java:646) at java.lang.Thread.run(java.base@11/Thread.java:834) "Thread-0" #14 prio=5 os_prio=0 cpu=71,05ms elapsed=28,03s tid=0x00007f94b046b000 nid=0x15f7 waiting on condition [0x00007f944dbd5000] java.lang.Thread.State: TIMED_WAITING (sleeping) at java.lang.Thread.sleep(java.base@11/Native Method) at net.sourceforge.bourgesl.TracingEventQueue$TracingEventQueueThread.run(java.desktop@11/TracingEventQueue.java:92) "Output controller consumer daemon" #15 daemon prio=5 os_prio=0 cpu=54,29ms elapsed=27,96s tid=0x00007f94b04d7800 nid=0x15f8 in Object.wait() [0x00007f944d8d4000] java.lang.Thread.State: TIMED_WAITING (on object monitor) at java.lang.Object.wait(java.base@11/Native Method) - waiting on <no object reference available> at net.sourceforge.jnlp.util.logging.OutputController$MessageQueConsumer.run(java.desktop@11/OutputController.java:122) - waiting to re-lock in wait() <0x00000000c01f2fc0> (a net.sourceforge.jnlp.util.logging.OutputController) at java.lang.Thread.run(java.base@11/Thread.java:834) "AWT-Shutdown" #18 prio=5 os_prio=0 cpu=4,32ms elapsed=27,95s tid=0x00007f9434004000 nid=0x15f9 in Object.wait() [0x00007f944d7d3000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(java.base@11/Native Method) - waiting on <no object reference available> at java.lang.Object.wait(java.base@11/Object.java:328) at sun.awt.AWTAutoShutdown.run(java.desktop@11/AWTAutoShutdown.java:291) - waiting to re-lock in wait() <0x00000000c01f2fe8> (a java.lang.Object) at java.lang.Thread.run(java.base@11/Thread.java:834) "AWT-EventQueue-1" #17 prio=6 os_prio=0 cpu=353,51ms elapsed=27,95s tid=0x00007f943400e000 nid=0x15fa waiting on condition [0x00007f944d6d2000] java.lang.Thread.State: WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000c01f3870> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.park(java.base@11/LockSupport.java:194) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(java.base@11/AbstractQueuedSynchronizer.java:2081) at java.awt.EventQueue.getNextEvent(java.desktop@11/EventQueue.java:566) at java.awt.EventDispatchThread.pumpOneEventForFilters(java.desktop@11/EventDispatchThread.java:190) at java.awt.EventDispatchThread.pumpEventsForFilter(java.desktop@11/EventDispatchThread.java:124) at java.awt.EventDispatchThread.pumpEventsForHierarchy(java.desktop@11/EventDispatchThread.java:113) at java.awt.EventDispatchThread.pumpEvents(java.desktop@11/EventDispatchThread.java:109) at java.awt.EventDispatchThread.pumpEvents(java.desktop@11/EventDispatchThread.java:101) at java.awt.EventDispatchThread.run(java.desktop@11/EventDispatchThread.java:90) "NetxSecurityThread" #19 daemon prio=5 os_prio=0 cpu=4,16ms elapsed=27,53s tid=0x00007f94b0aa8800 nid=0x1601 waiting on condition [0x00007f9420dac000] java.lang.Thread.State: WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd519d48> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.park(java.base@11/LockSupport.java:194) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(java.base@11/AbstractQueuedSynchronizer.java:2081) at java.util.concurrent.LinkedBlockingQueue.take(java.base@11/LinkedBlockingQueue.java:433) at net.sourceforge.jnlp.security.SecurityDialogMessageHandler.run(java.desktop@11/SecurityDialogMessageHandler.java:93) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-1" #20 daemon prio=5 os_prio=0 cpu=232,61ms elapsed=27,42s tid=0x00007f94b0b2b000 nid=0x1602 waiting on condition [0x00007f9420865000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "Aspro 2" #25 prio=5 os_prio=0 cpu=127,89ms elapsed=27,08s tid=0x00007f94b0b43800 nid=0x1607 in Object.wait() [0x00007f942011e000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(java.base@11/Native Method) - waiting on <no object reference available> at java.lang.Object.wait(java.base@11/Object.java:328) at java.awt.EventQueue.invokeAndWait(java.desktop@11/EventQueue.java:1361) - waiting to re-lock in wait() <0x00000000cc3c6e80> (a java.awt.EventQueue$1AWTInvocationLock) at java.awt.EventQueue.invokeAndWait(java.desktop@11/EventQueue.java:1342) at javax.swing.SwingUtilities.invokeAndWait(java.desktop@11/SwingUtilities.java:1480) at net.sourceforge.jnlp.cache.DefaultDownloadIndicator.getListener(java.desktop@11/DefaultDownloadIndicator.java:146) at net.sourceforge.jnlp.cache.CacheUtil.waitForResources(java.desktop@11/CacheUtil.java:569) at net.sourceforge.jnlp.runtime.JNLPClassLoader.waitForJars(java.desktop@11/JNLPClassLoader.java:1498) at net.sourceforge.jnlp.runtime.JNLPClassLoader.initializeResources(java.desktop@11/JNLPClassLoader.java:712) at net.sourceforge.jnlp.runtime.JNLPClassLoader.<init>(java.desktop@11/JNLPClassLoader.java:338) at net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(java.desktop@11/JNLPClassLoader.java:500) - locked <0x00000000cd98b9d8> (a java.util.concurrent.locks.ReentrantLock) at net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(java.desktop@11/JNLPClassLoader.java:545) - locked <0x00000000cd98b9d8> (a java.util.concurrent.locks.ReentrantLock) at net.sourceforge.jnlp.runtime.JNLPClassLoader.initializeExtensions(java.desktop@11/JNLPClassLoader.java:578) at net.sourceforge.jnlp.runtime.JNLPClassLoader.<init>(java.desktop@11/JNLPClassLoader.java:336) at net.sourceforge.jnlp.runtime.JNLPClassLoader.createInstance(java.desktop@11/JNLPClassLoader.java:421) at net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(java.desktop@11/JNLPClassLoader.java:495) - locked <0x00000000cd98b9d8> (a java.util.concurrent.locks.ReentrantLock) at net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(java.desktop@11/JNLPClassLoader.java:468) at net.sourceforge.jnlp.Launcher.createApplication(java.desktop@11/Launcher.java:815) at net.sourceforge.jnlp.Launcher.launchApplication(java.desktop@11/Launcher.java:529) at net.sourceforge.jnlp.Launcher$TgThread.run(java.desktop@11/Launcher.java:947) "AWT-EventQueue-2" #26 prio=6 os_prio=0 cpu=362,81ms elapsed=27,07s tid=0x00007f942c075000 nid=0x1608 waiting on condition [0x00007f940bbf7000] java.lang.Thread.State: WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd9a80a8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.park(java.base@11/LockSupport.java:194) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(java.base@11/AbstractQueuedSynchronizer.java:2081) at java.awt.EventQueue.getNextEvent(java.desktop@11/EventQueue.java:620) at java.awt.EventDispatchThread.pumpOneEventForFilters(java.desktop@11/EventDispatchThread.java:190) at java.awt.EventDispatchThread.pumpEventsForFilter(java.desktop@11/EventDispatchThread.java:124) at java.awt.EventDispatchThread.pumpEventsForHierarchy(java.desktop@11/EventDispatchThread.java:113) at java.awt.EventDispatchThread.pumpEvents(java.desktop@11/EventDispatchThread.java:109) at java.awt.SequencedEvent.dispatch(java.desktop@11/SequencedEvent.java:138) at java.awt.EventQueue.dispatchEventImpl(java.desktop@11/EventQueue.java:770) at java.awt.EventQueue$4.run(java.desktop@11/EventQueue.java:721) at java.awt.EventQueue$4.run(java.desktop@11/EventQueue.java:715) at java.security.AccessController.doPrivileged(java.base@11/Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(java.base@11/ProtectionDomain.java:85) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(java.base@11/ProtectionDomain.java:95) at java.awt.EventQueue$5.run(java.desktop@11/EventQueue.java:745) at java.awt.EventQueue$5.run(java.desktop@11/EventQueue.java:743) at java.security.AccessController.doPrivileged(java.base@11/Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(java.base@11/ProtectionDomain.java:85) at java.awt.EventQueue.dispatchEvent(java.desktop@11/EventQueue.java:742) at java.awt.EventDispatchThread.pumpOneEventForFilters(java.desktop@11/EventDispatchThread.java:203) at java.awt.EventDispatchThread.pumpEventsForFilter(java.desktop@11/EventDispatchThread.java:124) at java.awt.EventDispatchThread.pumpEventsForHierarchy(java.desktop@11/EventDispatchThread.java:113) at java.awt.EventDispatchThread.pumpEvents(java.desktop@11/EventDispatchThread.java:109) at java.awt.SequencedEvent.dispatch(java.desktop@11/SequencedEvent.java:138) at java.awt.EventQueue.dispatchEventImpl(java.desktop@11/EventQueue.java:770) at java.awt.EventQueue$4.run(java.desktop@11/EventQueue.java:721) at java.awt.EventQueue$4.run(java.desktop@11/EventQueue.java:715) at java.security.AccessController.doPrivileged(java.base@11/Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(java.base@11/ProtectionDomain.java:85) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(java.base@11/ProtectionDomain.java:95) at java.awt.EventQueue$5.run(java.desktop@11/EventQueue.java:745) at java.awt.EventQueue$5.run(java.desktop@11/EventQueue.java:743) at java.security.AccessController.doPrivileged(java.base@11/Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(java.base@11/ProtectionDomain.java:85) at java.awt.EventQueue.dispatchEvent(java.desktop@11/EventQueue.java:742) at java.awt.EventDispatchThread.pumpOneEventForFilters(java.desktop@11/EventDispatchThread.java:203) at java.awt.EventDispatchThread.pumpEventsForFilter(java.desktop@11/EventDispatchThread.java:124) at java.awt.EventDispatchThread.pumpEventsForHierarchy(java.desktop@11/EventDispatchThread.java:113) at java.awt.EventDispatchThread.pumpEvents(java.desktop@11/EventDispatchThread.java:109) at java.awt.EventDispatchThread.pumpEvents(java.desktop@11/EventDispatchThread.java:101) at java.awt.EventDispatchThread.run(java.desktop@11/EventDispatchThread.java:90) "Thread-3" #28 prio=6 os_prio=0 cpu=6,12ms elapsed=27,04s tid=0x00007f9428017800 nid=0x1609 waiting for monitor entry [0x00007f940bafd000] java.lang.Thread.State: BLOCKED (on object monitor) at net.sourceforge.jnlp.splashscreen.impls.defaultsplashscreen2012.BasePainter.update(java.desktop@11/BasePainter.java:565) - waiting to lock <0x00000000cd9a85d8> (a net.sourceforge.jnlp.splashscreen.impls.defaultsplashscreen2012.BasePainter) at java.util.Observable.notifyObservers(java.base@11/Observable.java:173) at java.util.Observable.notifyObservers(java.base@11/Observable.java:129) at net.sourceforge.jnlp.splashscreen.impls.defaultsplashscreen2012.BasePainter$MovingTextRunner.run(java.desktop@11/BasePainter.java:419) at java.lang.Thread.run(java.base@11/Thread.java:834) "Thread-4" #29 prio=6 os_prio=0 cpu=4,04ms elapsed=27,04s tid=0x00007f9428024000 nid=0x160a in Object.wait() [0x00007f940b9fc000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(java.base@11/Native Method) - waiting on <no object reference available> at java.lang.Object.wait(java.base@11/Object.java:328) at java.awt.EventQueue.invokeAndWait(java.desktop@11/EventQueue.java:1361) - waiting to re-lock in wait() <0x00000000cf4015a8> (a java.awt.EventQueue$1AWTInvocationLock) at java.awt.EventQueue.invokeAndWait(java.desktop@11/EventQueue.java:1342) at javax.swing.SwingUtilities.invokeAndWait(java.desktop@11/SwingUtilities.java:1480) at net.sourceforge.jnlp.splashscreen.impls.defaultsplashscreen2012.BasePainter.update(java.desktop@11/BasePainter.java:579) - locked <0x00000000cd9a85d8> (a net.sourceforge.jnlp.splashscreen.impls.defaultsplashscreen2012.BasePainter) at java.util.Observable.notifyObservers(java.base@11/Observable.java:173) at java.util.Observable.notifyObservers(java.base@11/Observable.java:129) at net.sourceforge.jnlp.splashscreen.impls.defaultsplashscreen2012.BasePainter$WaterLevelThread.run(java.desktop@11/BasePainter.java:452) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-2" #33 daemon prio=5 os_prio=0 cpu=70,09ms elapsed=26,88s tid=0x00007f942c078000 nid=0x160e waiting on condition [0x00007f940b4e7000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "TimerQueue" #37 daemon prio=5 os_prio=0 cpu=0,11ms elapsed=26,37s tid=0x00007f942c15b000 nid=0x1613 waiting on condition [0x00007f940b5fa000] java.lang.Thread.State: WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cf319e08> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.park(java.base@11/LockSupport.java:194) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(java.base@11/AbstractQueuedSynchronizer.java:2081) at java.util.concurrent.DelayQueue.take(java.base@11/DelayQueue.java:217) at javax.swing.TimerQueue.run(java.desktop@11/TimerQueue.java:171) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-3" #42 daemon prio=5 os_prio=0 cpu=14,09ms elapsed=22,49s tid=0x00007f942c1d0000 nid=0x1618 waiting on condition [0x00007f9407bfa000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-4" #43 daemon prio=5 os_prio=0 cpu=15,41ms elapsed=22,48s tid=0x00007f942c1ce800 nid=0x1619 waiting on condition [0x00007f9407cfb000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-5" #44 daemon prio=5 os_prio=0 cpu=14,30ms elapsed=22,48s tid=0x00007f942c195800 nid=0x161a waiting on condition [0x00007f9407af9000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-6" #45 daemon prio=5 os_prio=0 cpu=10,18ms elapsed=22,48s tid=0x00007f942c191000 nid=0x161b waiting on condition [0x00007f94079f8000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-7" #46 daemon prio=5 os_prio=0 cpu=10,95ms elapsed=22,48s tid=0x00007f942c192000 nid=0x161c waiting on condition [0x00007f94078f7000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-8" #47 daemon prio=5 os_prio=0 cpu=14,35ms elapsed=22,47s tid=0x00007f942c193000 nid=0x161d waiting on condition [0x00007f94077f6000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-9" #50 daemon prio=5 os_prio=0 cpu=14,10ms elapsed=22,46s tid=0x00007f942c1c7800 nid=0x1620 waiting on condition [0x00007f94074f3000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-10" #51 daemon prio=5 os_prio=0 cpu=11,33ms elapsed=22,45s tid=0x00007f942c1c9000 nid=0x1621 waiting on condition [0x00007f94073f2000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-11" #52 daemon prio=5 os_prio=0 cpu=10,87ms elapsed=22,45s tid=0x00007f942c1ca800 nid=0x1622 waiting on condition [0x00007f94072f1000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-12" #53 daemon prio=5 os_prio=0 cpu=10,86ms elapsed=22,44s tid=0x00007f942c1cc800 nid=0x1623 waiting on condition [0x00007f94071f0000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-13" #56 daemon prio=5 os_prio=0 cpu=10,73ms elapsed=22,44s tid=0x00007f942c166800 nid=0x1626 waiting on condition [0x00007f94070ef000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-14" #57 daemon prio=5 os_prio=0 cpu=14,54ms elapsed=22,43s tid=0x00007f942c168000 nid=0x1627 waiting on condition [0x00007f9406fee000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-15" #61 daemon prio=5 os_prio=0 cpu=17,19ms elapsed=22,43s tid=0x00007f942c16a000 nid=0x1628 waiting on condition [0x00007f9406eed000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-16" #62 daemon prio=5 os_prio=0 cpu=20,58ms elapsed=22,42s tid=0x00007f942c16c000 nid=0x162c waiting on condition [0x00007f94076f5000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-17" #64 daemon prio=5 os_prio=0 cpu=16,99ms elapsed=22,40s tid=0x00007f942c16d800 nid=0x162e waiting on condition [0x00007f9406dec000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-18" #66 daemon prio=5 os_prio=0 cpu=17,81ms elapsed=22,40s tid=0x00007f942c16e800 nid=0x162f waiting on condition [0x00007f94075f4000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-19" #68 daemon prio=5 os_prio=0 cpu=17,89ms elapsed=22,40s tid=0x00007f942c16f800 nid=0x1630 waiting on condition [0x00007f9406ceb000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-20" #69 daemon prio=5 os_prio=0 cpu=17,17ms elapsed=22,39s tid=0x00007f942c170800 nid=0x1631 waiting on condition [0x00007f94069e8000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-21" #72 daemon prio=5 os_prio=0 cpu=17,50ms elapsed=22,38s tid=0x00007f942c1d8000 nid=0x1636 waiting on condition [0x00007f9406bea000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-22" #76 daemon prio=5 os_prio=0 cpu=17,57ms elapsed=22,37s tid=0x00007f942c1d2000 nid=0x163a waiting on condition [0x00007f9406ae9000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "itwpool-1-itwthread-23" #77 daemon prio=5 os_prio=0 cpu=16,68ms elapsed=22,37s tid=0x00007f942c1d3800 nid=0x163b waiting on condition [0x00007f94061e0000] java.lang.Thread.State: TIMED_WAITING (parking) at jdk.internal.misc.Unsafe.park(java.base@11/Native Method) - parking to wait for <0x00000000cd726dc0> (a java.util.concurrent.SynchronousQueue$TransferStack) at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11/LockSupport.java:234) at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(java.base@11/SynchronousQueue.java:462) at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@11/SynchronousQueue.java:361) at java.util.concurrent.SynchronousQueue.poll(java.base@11/SynchronousQueue.java:937) at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11/ThreadPoolExecutor.java:1053) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11/ThreadPoolExecutor.java:1114) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11/ThreadPoolExecutor.java:628) at java.lang.Thread.run(java.base@11/Thread.java:834) "VM Thread" os_prio=0 cpu=49,56ms elapsed=28,25s tid=0x00007f94b019b800 nid=0x15e7 runnable "GC Thread#0" os_prio=0 cpu=32,03ms elapsed=28,26s tid=0x00007f94b0040000 nid=0x15e2 runnable "GC Thread#1" os_prio=0 cpu=15,07ms elapsed=27,82s tid=0x00007f9480001000 nid=0x15fb runnable "GC Thread#2" os_prio=0 cpu=19,50ms elapsed=27,82s tid=0x00007f9480002800 nid=0x15fc runnable "GC Thread#3" os_prio=0 cpu=26,67ms elapsed=27,82s tid=0x00007f9480004000 nid=0x15fd runnable "G1 Main Marker" os_prio=0 cpu=0,45ms elapsed=28,26s tid=0x00007f94b005b800 nid=0x15e3 runnable "G1 Conc#0" os_prio=0 cpu=11,37ms elapsed=28,26s tid=0x00007f94b005d800 nid=0x15e4 runnable "G1 Refine#0" os_prio=0 cpu=2,30ms elapsed=28,26s tid=0x00007f94b013a800 nid=0x15e5 runnable "G1 Refine#1" os_prio=0 cpu=0,06ms elapsed=27,81s tid=0x00007f9488001000 nid=0x15fe runnable "G1 Young RemSet Sampling" os_prio=0 cpu=9,54ms elapsed=28,25s tid=0x00007f94b013c800 nid=0x15e6 runnable "VM Periodic Task Thread" os_prio=0 cpu=19,95ms elapsed=28,16s tid=0x00007f94b02db000 nid=0x15f1 waiting on condition JNI global refs: 88, weak refs: 487 Heap garbage-first heap total 262144K, used 108573K [0x00000000c0000000, 0x0000000100000000) region size 1024K, 99 young (101376K), 5 survivors (5120K) Metaspace used 32074K, capacity 32873K, committed 33280K, reserved 1079296K class space used 3388K, capacity 3743K, committed 3840K, reserved 1048576K