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List:       openjdk-openjfx-dev
Subject:    Re: deadlock with swing
From:       Anton Tarasov <anton.tarasov () jetbrains ! com>
Date:       2019-03-22 10:58:49
Message-ID: 75db0239-ec7d-680c-cf72-c5274dd7c079 () jetbrains ! com
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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@51c6338d
> > > > at java.base@11.0.2/jdk.internal.misc.Unsafe.park(Native Method)
> > > > at 
> > > > java.base@11.0.2/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
> > > >  at 
> > > > java.base@11.0.2/java.util.concurrent.FutureTask.awaitDone(FutureTask.java:447)
> > > >  at 
> > > > java.base@11.0.2/java.util.concurrent.FutureTask.get(FutureTask.java:190)
> > > > at 
> > > > platform/javafx.web@11.0.2/com.sun.javafx.webkit.InputMethodClientImpl.getLocationOffset(InputMethodClientImpl.java:157)
> > > >  at 
> > > > platform/javafx.graphics@11.0.2/javafx.scene.Scene$InputMethodRequestsDelegate.getLocationOffset(Scene.java:4140)
> > > >  at 
> > > > platform/javafx.swing@11.0.2/javafx.embed.swing.InputMethodSupport$InputMethodRequestsAdapter.getLocationOffset(InputMethodSupport.java:67)
> > > >  at 
> > > > java.desktop@11.0.2/sun.awt.im.InputMethodContext.getLocationOffset(InputMethodContext.java:285)
> > > >  at 
> > > > java.desktop@11.0.2/sun.lwawt.macosx.CInputMethod$7.run(CInputMethod.java:779)
> > > >  at 
> > > > java.desktop@11.0.2/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:303)
> > > >  at 
> > > > java.desktop@11.0.2/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:776)
> > > >  at 
> > > > java.desktop@11.0.2/java.awt.EventQueue$4.run(EventQueue.java:727)
> > > > at 
> > > > java.desktop@11.0.2/java.awt.EventQueue$4.run(EventQueue.java:721)
> > > > at 
> > > > java.base@11.0.2/java.security.AccessController.doPrivileged(Native 
> > > > Method)
> > > > at 
> > > > java.base@11.0.2/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
> > > >  at 
> > > > java.base@11.0.2/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
> > > >  at 
> > > > java.desktop@11.0.2/java.awt.EventQueue$5.run(EventQueue.java:751)
> > > > at 
> > > > java.desktop@11.0.2/java.awt.EventQueue$5.run(EventQueue.java:749)
> > > > at 
> > > > java.base@11.0.2/java.security.AccessController.doPrivileged(Native 
> > > > Method)
> > > > at 
> > > > java.base@11.0.2/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
> > > >  at 
> > > > java.desktop@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@11.0.2/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
> > > >  at 
> > > > java.desktop@11.0.2/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
> > > >  at 
> > > > java.desktop@11.0.2/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
> > > >  at 
> > > > java.desktop@11.0.2/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
> > > >  at 
> > > > java.desktop@11.0.2/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
> > > >  at 
> > > > java.desktop@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@11.0.2/sun.lwawt.macosx.LWCToolkit.$$YJP$$doAWTRunLoopImpl(Native \
> > > >  Method)
> > > > at 
> > > > java.desktop@11.0.2/sun.lwawt.macosx.LWCToolkit.doAWTRunLoopImpl(LWCToolkit.java)
> > > >  at 
> > > > java.desktop@11.0.2/sun.lwawt.macosx.LWCToolkit.doAWTRunLoop(LWCToolkit.java:1027)
> > > >  at 
> > > > java.desktop@11.0.2/sun.lwawt.macosx.LWCToolkit.invokeAndWait(LWCToolkit.java:827)
> > > >  at 
> > > > java.desktop@11.0.2/sun.lwawt.macosx.LWCToolkit.invokeAndWait(LWCToolkit.java:780)
> > > >  at 
> > > > java.desktop@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.
> > > 
> 


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