AWT native code freezee at sun.awt.windows.WGlobalCursorManager#findHeavyweightUnderCursor #878

VISTALL · 2024-08-14T14:41:26Z

Hello. I'm testing FlatLaf as default laf for Consulo IDE (https://github.com/consulo), which is an IDEA fork.

I want replace internal laf implementation by FlatLaf, but catch very strange freeze at sun.awt.windows.WGlobalCursorManager#findHeavyweightUnderCursor. Freeze can appear in random time (there no specific time when, app can start - I can do something, and catch UI lock, or just at start)

JRE: 21.0.2+13-b375.1 (JetBrains s.r.o.)
JVM: 21.0.2+13-b375.1 (OpenJDK 64-Bit Server VM)

Using last library version

Also tested with Adoptium JDK 21 - some issue.

Any guess?

"AWT-EventQueue-0@4684" tid=0x56 nid=NA runnable
  java.lang.Thread.State: RUNNABLE
	 blocks AWT-Windows@3479
	  at sun.awt.windows.WGlobalCursorManager.findHeavyweightUnderCursor(WGlobalCursorManager.java:-1)
	  at sun.awt.GlobalCursorManager._updateCursor(GlobalCursorManager.java:178)
	  at sun.awt.GlobalCursorManager.updateCursorImmediately(GlobalCursorManager.java:95)
	  at sun.awt.windows.WComponentPeer.updateCursorImmediately(WComponentPeer.java:710)
	  at java.awt.Component.updateCursorImmediately(Component.java:3259)
	  at java.awt.Container.validate(Container.java:1672)
	  at com.formdev.flatlaf.ui.FlatRootPaneUI$FlatRootLayout.layoutContainer(FlatRootPaneUI.java:630)
	  at java.awt.Container.layout(Container.java:1541)
	  at java.awt.Container.doLayout(Container.java:1530)
	  at java.awt.Container.validateTree(Container.java:1725)
	  at java.awt.Container.validate(Container.java:1660)
	  - locked <0x5d93> (a java.awt.Component$AWTTreeLock)
	  at javax.swing.RepaintManager$3.run(RepaintManager.java:760)
	  at javax.swing.RepaintManager$3.run(RepaintManager.java:758)
	  at java.security.AccessController.executePrivileged(AccessController.java:778)
	  at java.security.AccessController.doPrivileged(AccessController.java:400)
	  at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
	  at javax.swing.RepaintManager.validateInvalidComponents(RepaintManager.java:757)
	  at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1911)
	  at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:318)
	  at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:781)
	  at java.awt.EventQueue$4.run(EventQueue.java:728)
	  at java.awt.EventQueue$4.run(EventQueue.java:722)
	  at java.security.AccessController.executePrivileged(AccessController.java:778)
	  at java.security.AccessController.doPrivileged(AccessController.java:400)
	  at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
	  at java.awt.EventQueue.dispatchEvent(EventQueue.java:750)
	  at consulo.desktop.awt.ui.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:769)
	  at consulo.desktop.awt.ui.IdeEventQueue._dispatchEvent(IdeEventQueue.java:680)
	  at consulo.desktop.awt.ui.IdeEventQueue.lambda$dispatchEvent$5(IdeEventQueue.java:367)
	  at consulo.desktop.awt.ui.IdeEventQueue$$Lambda/0x0000000800bfe2d0.compute(Unknown Source:-1)
	  at consulo.application.impl.internal.progress.CoreProgressManager.computePrioritized(CoreProgressManager.java:770)
	  at consulo.desktop.awt.ui.IdeEventQueue.lambda$dispatchEvent$6(IdeEventQueue.java:366)
	  at consulo.desktop.awt.ui.IdeEventQueue$$Lambda/0x0000000800bfe090.run(Unknown Source:-1)
	  at consulo.desktop.awt.ui.IdeEventQueue.dispatchEvent(IdeEventQueue.java:405)
	  at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:207)
	  at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
	  at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
	  at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
	  at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
	  at java.awt.EventDispatchThread.run(EventDispatchThread.java:92)

The text was updated successfully, but these errors were encountered:

VISTALL · 2024-08-14T17:23:05Z

Disabling window decoration (-Dflatlaf.useWindowDecorations=false) looks like fix issue

VISTALL · 2024-08-15T21:35:52Z

My research. I attached VS for application and found this:

Native Call Stack

Deeper

Found source code

And I'm stuck at that point

DevCharly · 2024-09-03T17:49:20Z

Not sure how I could help 😕
Don't see any relation to FlatLaf in provided information.

The stack in your initial post shows that thread AWT-EventQueue-0 "blocks AWT-Windows@3479".
Could you post the stack of the blocked thread AWT-Windows?

VISTALL · 2024-09-03T17:53:03Z

Hello. I'm 100% sure stuck in native code inside FlatLaf library code, but I'm don't known how found the problem

VISTALL · 2024-09-03T17:55:29Z

I will try

VISTALL · 2024-09-03T18:25:54Z

Sometimes lock not inside AppMenu - but same position (heavy cursor find). Here another thread

DevCharly · 2024-09-03T20:27:38Z

I think it would be better to use jstack to get more information (stack of all threads, blocked threads, etc).

See https://intellij-support.jetbrains.com/hc/en-us/articles/206544899-Getting-a-thread-dump-when-IDE-hangs-and-doesn-t-respond

VISTALL · 2024-09-03T20:54:54Z

log.txt

DevCharly · 2024-09-03T22:12:37Z

This is interesting.

Thread AWT-Windows is blocked while handling WM_NCHITTEST message:

"AWT-Windows" #71 [12588] daemon prio=6 os_prio=0 cpu=421.88ms elapsed=132.46s tid=0x0000020ac2435ed0 nid=12588 waiting for monitor entry  [0x000000b0657fd000]
   java.lang.Thread.State: BLOCKED (on object monitor)
	at java.awt.Component.getLocationOnScreen([email protected]/Component.java:2118)
==>	- waiting to lock <0x000000020713be18> (a java.awt.Component$AWTTreeLock)
	at javax.swing.SwingUtilities.convertPointToScreen([email protected]/SwingUtilities.java:437)
	at javax.swing.SwingUtilities.convertPoint([email protected]/SwingUtilities.java:197)
==>	at consulo.ide.impl.idea.ui.BalloonImpl$MyComponent.contains(consulo.ide.impl@3-SNAPSHOT/BalloonImpl.java:1953)
	at com.formdev.flatlaf.ui.FlatTitlePane.isTitleBarCaptionAt(com.formdev.flatlaf/FlatTitlePane.java:1082)
	at com.formdev.flatlaf.ui.FlatTitlePane.isTitleBarCaptionAt(com.formdev.flatlaf/FlatTitlePane.java:1127)
	at com.formdev.flatlaf.ui.FlatTitlePane.captionHitTest(com.formdev.flatlaf/FlatTitlePane.java:1077)
	at com.formdev.flatlaf.ui.FlatTitlePane$$Lambda/0x0000020a7c6c0240.test(com.formdev.flatlaf/Unknown Source)
==>	at com.formdev.flatlaf.ui.FlatWindowsNativeWindowBorder$WndProc.onNcHitTest(com.formdev.flatlaf/FlatWindowsNativeWindowBorder.java:379)
	at sun.awt.windows.WToolkit.eventLoop([email protected]/Native Method)
	at sun.awt.windows.WToolkit.run([email protected]/WToolkit.java:360)
	at java.lang.Thread.runWith([email protected]/Thread.java:1596)
	at java.lang.Thread.run([email protected]/Thread.java:1583)

Here is thread AWT-EventQueue-0, which owns the AWT lock:

"AWT-EventQueue-0" #86 [19664] prio=6 os_prio=0 cpu=5921.88ms elapsed=131.73s tid=0x0000020ac2434490 nid=19664 runnable  [0x000000b0633fe000]
   java.lang.Thread.State: RUNNABLE
	at sun.awt.windows.WGlobalCursorManager.findHeavyweightUnderCursor([email protected]/Native Method)
	at sun.awt.GlobalCursorManager._updateCursor([email protected]/GlobalCursorManager.java:178)
	at sun.awt.GlobalCursorManager.updateCursorImmediately([email protected]/GlobalCursorManager.java:95)
	at sun.awt.windows.WComponentPeer.updateCursorImmediately([email protected]/WComponentPeer.java:710)
	at java.awt.Component.updateCursorImmediately([email protected]/Component.java:3259)
	at java.awt.Container.validate([email protected]/Container.java:1672)
	at com.formdev.flatlaf.ui.FlatRootPaneUI$FlatRootLayout.layoutContainer(com.formdev.flatlaf/FlatRootPaneUI.java:630)
	at java.awt.Container.layout([email protected]/Container.java:1541)
	at java.awt.Container.doLayout([email protected]/Container.java:1530)
	at java.awt.Container.validateTree([email protected]/Container.java:1725)
	at java.awt.Container.validate([email protected]/Container.java:1660)
==>	- locked <0x000000020713be18> (a java.awt.Component$AWTTreeLock)
	at javax.swing.RepaintManager$3.run([email protected]/RepaintManager.java:762)
	at javax.swing.RepaintManager$3.run([email protected]/RepaintManager.java:760)

So the problem is causes by consulo.ide.impl.idea.ui.BalloonImpl$MyComponent.contains(x, y), which invokes SwingUtilities.convertPoint() on thread AWT-Windows while AWT is locked on thread AWT-EventQueue-0.

If you (temporary) change consulo.ide.impl.idea.ui.BalloonImpl$MyComponent.contains(x, y) to simply return false, the application should no longer freeze.

On FlatLaf side, I'll remove the invocation of Component.contains(x, y) to avoid that problem/risk.
I'll also review the code that runs on thread AWT-Windows...

…eze when using custom component that overrides `Component.contains(int x, int y)` and invokes `SwingUtilities.convertPoint()` (or similar) from the overridden method (issue #878)

DevCharly · 2024-09-03T22:57:22Z

fixed in latest 3.6-SNAPSHOT: https://github.com/JFormDesigner/FlatLaf#snapshots

VISTALL · 2024-09-04T07:25:04Z

Good day. I will test, thanks for possible fix :)

VISTALL · 2024-09-04T15:19:45Z

Looks like - bug fixed, I can't reproduce for now. I had misscheck AWT-Windows thread locking.

This logic also exists in IDEA (https://github.com/JetBrains/intellij-community/blob/master/platform/platform-impl/src/com/intellij/ui/BalloonImpl.java#L2011)

BalloonImpl its notifications,etc component ui.

DevCharly added this to the 3.6 milestone Sep 3, 2024

DevCharly closed this as completed Sep 26, 2024

DevCharly modified the milestones: 3.6, 3.5.2 Oct 11, 2024

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

AWT native code freezee at sun.awt.windows.WGlobalCursorManager#findHeavyweightUnderCursor #878

AWT native code freezee at sun.awt.windows.WGlobalCursorManager#findHeavyweightUnderCursor #878

VISTALL commented Aug 14, 2024 •

edited

Loading

VISTALL commented Aug 14, 2024

VISTALL commented Aug 15, 2024

DevCharly commented Sep 3, 2024

VISTALL commented Sep 3, 2024 •

edited

Loading

VISTALL commented Sep 3, 2024

VISTALL commented Sep 3, 2024

DevCharly commented Sep 3, 2024

VISTALL commented Sep 3, 2024

DevCharly commented Sep 3, 2024

DevCharly commented Sep 3, 2024

VISTALL commented Sep 4, 2024

VISTALL commented Sep 4, 2024

AWT native code freezee at sun.awt.windows.WGlobalCursorManager#findHeavyweightUnderCursor #878

AWT native code freezee at sun.awt.windows.WGlobalCursorManager#findHeavyweightUnderCursor #878

Comments

VISTALL commented Aug 14, 2024 • edited Loading

VISTALL commented Aug 14, 2024

VISTALL commented Aug 15, 2024

DevCharly commented Sep 3, 2024

VISTALL commented Sep 3, 2024 • edited Loading

VISTALL commented Sep 3, 2024

VISTALL commented Sep 3, 2024

DevCharly commented Sep 3, 2024

VISTALL commented Sep 3, 2024

DevCharly commented Sep 3, 2024

DevCharly commented Sep 3, 2024

VISTALL commented Sep 4, 2024

VISTALL commented Sep 4, 2024

VISTALL commented Aug 14, 2024 •

edited

Loading

VISTALL commented Sep 3, 2024 •

edited

Loading