deadlock with swing

[Anton Tarasov]

Great! Thank you.

Regards,
Anton.

On 3/21/2019 6:23 PM, Kevin Rushforth wrote:
> Thanks. I took a quick look at it the other day and I think I know 
> what the problem is.
>
> -- Kevin
>
>
> On 3/21/2019 8:16 AM, Anton Tarasov wrote:
>> Hi Kevin,
>>
>> Please find it here: https://bugs.openjdk.java.net/browse/JDK-8221261
>>
>> Regards,
>> Anton.
>>
>> On 3/14/2019 7:23 PM, Kevin Rushforth wrote:
>>> Hi Anton,
>>>
>>> Can you file a bug in JBS? We can take a look at it, although it 
>>> might be difficult without a test case.
>>>
>>> -- Kevin
>>>
>>>
>>> On 3/11/19 10:30 PM, Anton Tarasov wrote:
>>>> Hello!
>>>>
>>>> Could you please take a look at the deadlock which we encounter 
>>>> with JFXPanel/WebView:
>>>>
>>>> "AWT-EventQueue-0" prio=0 tid=0x0 nid=0x0 waiting on condition
>>>>      java.lang.Thread.State: WAITING
>>>>  on java.util.concurrent.FutureTask at 51c6338d
>>>>     at java.base at 11.0.2/jdk.internal.misc.Unsafe.park(Native Method)
>>>>     at 
>>>> java.base at 11.0.2/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
>>>>     at 
>>>> java.base at 11.0.2/java.util.concurrent.FutureTask.awaitDone(FutureTask.java:447)
>>>>     at 
>>>> java.base at 11.0.2/java.util.concurrent.FutureTask.get(FutureTask.java:190)
>>>>     at 
>>>> platform/javafx.web at 11.0.2/com.sun.javafx.webkit.InputMethodClientImpl.getLocationOffset(InputMethodClientImpl.java:157)
>>>>     at 
>>>> platform/javafx.graphics at 11.0.2/javafx.scene.Scene$InputMethodRequestsDelegate.getLocationOffset(Scene.java:4140)
>>>>     at 
>>>> platform/javafx.swing at 11.0.2/javafx.embed.swing.InputMethodSupport$InputMethodRequestsAdapter.getLocationOffset(InputMethodSupport.java:67)
>>>>     at 
>>>> java.desktop at 11.0.2/sun.awt.im.InputMethodContext.getLocationOffset(InputMethodContext.java:285)
>>>>     at 
>>>> java.desktop at 11.0.2/sun.lwawt.macosx.CInputMethod$7.run(CInputMethod.java:779)
>>>>     at 
>>>> java.desktop at 11.0.2/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:303)
>>>>     at 
>>>> java.desktop at 11.0.2/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:776)
>>>>     at 
>>>> java.desktop at 11.0.2/java.awt.EventQueue$4.run(EventQueue.java:727)
>>>>     at 
>>>> java.desktop at 11.0.2/java.awt.EventQueue$4.run(EventQueue.java:721)
>>>>     at 
>>>> java.base at 11.0.2/java.security.AccessController.doPrivileged(Native 
>>>> Method)
>>>>     at 
>>>> java.base at 11.0.2/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
>>>>     at 
>>>> java.base at 11.0.2/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
>>>>     at 
>>>> java.desktop at 11.0.2/java.awt.EventQueue$5.run(EventQueue.java:751)
>>>>     at 
>>>> java.desktop at 11.0.2/java.awt.EventQueue$5.run(EventQueue.java:749)
>>>>     at 
>>>> java.base at 11.0.2/java.security.AccessController.doPrivileged(Native 
>>>> Method)
>>>>     at 
>>>> java.base at 11.0.2/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
>>>>     at 
>>>> java.desktop at 11.0.2/java.awt.EventQueue.dispatchEvent(EventQueue.java:748)
>>>>     at 
>>>> com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:723)
>>>>     at 
>>>> com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:672)
>>>>     at 
>>>> com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:367)
>>>>     at 
>>>> java.desktop at 11.0.2/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
>>>>     at 
>>>> java.desktop at 11.0.2/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
>>>>     at 
>>>> java.desktop at 11.0.2/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
>>>>     at 
>>>> java.desktop at 11.0.2/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
>>>>     at 
>>>> java.desktop at 11.0.2/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
>>>>     at 
>>>> java.desktop at 11.0.2/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
>>>>
>>>> "JavaFX Application Thread" prio=0 tid=0x0 nid=0x0 runnable
>>>>      java.lang.Thread.State: RUNNABLE
>>>>  (in native)
>>>>     at 
>>>> java.desktop at 11.0.2/sun.lwawt.macosx.LWCToolkit.$$YJP$$doAWTRunLoopImpl(Native 
>>>> Method)
>>>>     at 
>>>> java.desktop at 11.0.2/sun.lwawt.macosx.LWCToolkit.doAWTRunLoopImpl(LWCToolkit.java)
>>>>     at 
>>>> java.desktop at 11.0.2/sun.lwawt.macosx.LWCToolkit.doAWTRunLoop(LWCToolkit.java:1027)
>>>>     at 
>>>> java.desktop at 11.0.2/sun.lwawt.macosx.LWCToolkit.invokeAndWait(LWCToolkit.java:827)
>>>>     at 
>>>> java.desktop at 11.0.2/sun.lwawt.macosx.LWCToolkit.invokeAndWait(LWCToolkit.java:780)
>>>>     at 
>>>> java.desktop at 11.0.2/sun.lwawt.macosx.CInputMethod.characterIndexForPoint(CInputMethod.java:777)
>>>>
>>>> It seems to be caused by this fix: 
>>>> https://hg.openjdk.java.net/openjfx/11/rt/rev/808d535c4e15
>>>>
>>>> The "characterIndexForPoint" method performs "invokeAndWait" from 
>>>> JavaFX thread:
>>>>
>>>>             LWCToolkit.invokeAndWait(new Runnable() {
>>>>                 public void run() { synchronized(offsetInfo) {
>>>>                     offsetInfo[0] = 
>>>> fIMContext.getLocationOffset(screenX, screenY);
>>>>                     insertPositionOffset[0] = 
>>>> fIMContext.getInsertPositionOffset();
>>>>                 }}
>>>>             }, fAwtFocussedComponent);
>>>>
>>>> which is then on EDT delegates back to JavaFX thread and waits for 
>>>> async result.
>>>>
>>>> Is it a known issue? Unfortunately, I can't give you a simple case 
>>>> to reproduce it. Hope the problem looks clear from the description.
>>>>
>>>> With best regards,
>>>> Anton.
>>>
>