deadlock with swing

[Anton Tarasov]

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.
>