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Bug 120928 - CompletionImpl.insertCommonPrefix lockups on loaded machine during editing
Summary: CompletionImpl.insertCommonPrefix lockups on loaded machine during editing
Status: RESOLVED FIXED
Alias: None
Product: editor
Classification: Unclassified
Component: Completion & Templates (show other bugs)
Version: 5.x
Hardware: All All
: P3 blocker (vote)
Assignee: Dusan Balek
URL:
Keywords: THREAD
Depends on:
Blocks:
 
Reported: 2007-11-02 09:05 UTC by greggwon
Modified: 2008-03-14 17:20 UTC (History)
0 users

See Also:
Issue Type: DEFECT
Exception Reporter:

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Description greggwon 2007-11-02 09:05:36 UTC 
The stack traces below came out of two different lockups of Netbeans 5.5.1 while trying to use code completion.
My machine was a little bit loaded at the time with other processes operating.  It might be possible to test netbeans
and recreate this by using another Java application which is doing lots of socket I/O and heavy graphics and CPU like
my machine was subject to.  Then, just use code completion trying both ENTER and TAB as signals to complete with the
current selection.




"AWT-EventQueue-1" prio=6 tid=0x2ef6fc00 nid=0x2cc50 runnable [0x2f65f000..0x2f65fd94]
   java.lang.Thread.State: RUNNABLE
        at java.lang.String.<init>(String.java:216)
        at java.lang.StringBuilder.toString(StringBuilder.java:430)
        at javax.swing.JComponent.paramString(JComponent.java:5443)
        at javax.swing.text.JTextComponent.paramString(JTextComponent.java:3921)
        at javax.swing.JEditorPane.paramString(JEditorPane.java:1641)
        at java.awt.Component.toString(Component.java:7597)
        at java.lang.String.valueOf(String.java:2827)
        at java.lang.StringBuilder.append(StringBuilder.java:115)
        at java.awt.AWTEvent.toString(AWTEvent.java:328)
        at java.lang.String.valueOf(String.java:2827)
        at java.lang.StringBuffer.append(StringBuffer.java:219)
        - locked <0x02f105e8> (a java.lang.StringBuffer)
        at org.netbeans.modules.collab.ui.IdleDetectionListener.eventDispatched(IdleDetectionListener.java:126)
        - locked <0x06b9db48> (a java.lang.Object)
        at java.awt.Toolkit$SelectiveAWTEventListener.eventDispatched(Toolkit.java:2360)
        at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2252)
        at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2251)
        at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2251)
        at java.awt.Toolkit.notifyAWTEventListeners(Toolkit.java:2210)
        at java.awt.Component.dispatchEventImpl(Component.java:4308)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1848)
        at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:693)
        at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:958)
        at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:830)
        at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:657)
        at java.awt.Component.dispatchEventImpl(Component.java:4282)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        at org.netbeans.modules.editor.completion.CompletionImpl.insertCommonPrefix(CompletionImpl.java:638)
        at org.netbeans.modules.editor.completion.CompletionImpl.access$1300(CompletionImpl.java:70)
        at org.netbeans.modules.editor.completion.CompletionImpl$7.run(CompletionImpl.java:1106)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168) 
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160) 
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)






"AWT-EventQueue-1" prio=6 tid=0x2e989800 nid=0x1d5d8 runnable [0x2f66f000..0x2f66fa14]
   java.lang.Thread.State: RUNNABLE
        at java.lang.Object.hashCode(Native Method)
        at java.util.HashMap.get(HashMap.java:300)
        at sun.awt.AppContext.get(AppContext.java:575)
        - locked <0x04ca0528> (a java.util.HashMap)
        at java.awt.KeyboardFocusManager.getCurrentKeyboardFocusManager(KeyboardFocusManager.java:162)
        - locked <0x2301ac80> (a java.lang.Class for java.awt.KeyboardFocusManager)
        at java.awt.KeyboardFocusManager.getCurrentKeyboardFocusManager(KeyboardFocusManager.java:156)
        at java.awt.Component.dispatchEventImpl(Component.java:4317)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1848)
        at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:693)
        at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:958)
        at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:830)
        at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:657)
        at java.awt.Component.dispatchEventImpl(Component.java:4282)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        at org.netbeans.modules.editor.completion.CompletionImpl.insertCommonPrefix(CompletionImpl.java:638)
        at org.netbeans.modules.editor.completion.CompletionImpl.access$1300(CompletionImpl.java:70)
        at org.netbeans.modules.editor.completion.CompletionImpl$7.run(CompletionImpl.java:1106)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168) 
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160) 
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)
Comment 1 Jiri Prox 2007-11-02 09:51:16 UTC 
Can you please provide full threaddumps?
I cannot see any lockup in the threads you have attached, both are in Runnable state. So maybe the operation is only
taking too long time to complete.
Comment 2 Vitezslav Stejskal 2007-11-02 10:50:21 UTC 
Please attach the full stack trace to see if there really was a deadlock or if the IDE only was busy, but would
eventually finish its work. The stacktraces you attached don't suggest a deadlock. They don't even hang around in the
editor, the first one is showing some activity in your collaboration module and the second one in java.awt classes.
Also, have you tried this in Nb6 betas or dev builds? The java infrastructure and code completion has gone through an
extensive overhaul in Nb6 and should perform much better.
Comment 3 Dusan Balek 2008-03-14 17:20:11 UTC 
Should be fixed in NB6.0 since this part of code completion has been completely rewritten.