Update: It seems that MacWidgets causes this problem. In the applications main frame I added the line

MacUtils.makeWindowLeopardStyle(getRootPane());

If I disable (comment out) this line there will no exceptions. What a..

The structure of components: One Mainframe with BorderLayout (Toolbar, Sidebar and MainContent). The MainContent contains eventually the graph, the corresponding satellite component is in the sidebar.

Original post:

I had already posted about it last week. But now it seems that is was not a reasonable solution.

I have a java swing application which uses standard java swing elements and the jung2 graph framework visualizing graphs. The application is developed under java 1.6 and mac os x 10.5.6.

The actual problem is that since yesterday the AWT-Eventthread crashed, for example like this:

Thu May 7 15:04:28 X.localdomain java[2002]Â : CGSResolveShmemReference : reference offset (65232) exceeds bounds (32768) on shmem obj 0x257e
Exception in thread "AWT-EventQueue-0" java.lang.RuntimeException: Non-Java exception raised, not handled! (Original problem: Error (1000) creating CGSWindow)
at apple.awt.CRenderer.doRect(Native Method)
at apple.awt.OSXSurfaceData.doRect(OSXSurfaceData.java:1247)
at apple.awt.CRenderer.fillRect(CRenderer.java:157)
at apple.awt.CRenderer.fillRect(CRenderer.java:145)
at sun.java2d.pipe.ValidatePipe.fillRect(ValidatePipe.java:58)
at sun.java2d.SunGraphics2D.fillRect(SunGraphics2D.java:2501)
at edu.uci.ics.jung.visualization.BasicVisualizationServer.renderGraph(BasicVisualizationServer.java:341)
at edu.uci.ics.jung.visualization.BasicVisualizationServer.paintComponent(BasicVisualizationServer.java:321)
at javax.swing.JComponent.paint(JComponent.java:1027)
at javax.swing.JComponent.paintChildren(JComponent.java:864)
at javax.swing.JComponent.paint(JComponent.java:1036)
at javax.swing.JComponent._paintImmediately(JComponent.java:5096)
at javax.swing.JComponent.paintImmediately(JComponent.java:4880)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:749)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:679)
at javax.swing.RepaintManager.seqPaintDirtyRegions(RepaintManager.java:659)
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:128)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:300)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:210)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:200)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:195)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:187)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)

This happens in the event thread, so the application is “still” useable. Well, of course, the graph painting is a mess.

After googling, I found some solutions:

1. Execute the file access rights (permissions)-fix via disk utilities & reboot the maschine. Yes, this will fix the problem for some starts, but then.. what a dejavu.
2. Assure that the paint-process is not outside of the awt-thread.. yes it is. See trace. (Link developer.apple.com)
3. Exclude the SWT jar.. well, I do not use this and I have not include it. (Link publicobject.com)
4. Use not the apple ui manager.. well, i replace the manager for the components of jung, i disabled my own selfwritten graph vertex renderer.. no changes. No less exceptions, nothing.

Perhaps this could be an issue by jung, but..

• why only on this mac – but no error/exception on others systems like windows and linux? Also I have a 2 years older macbookpro.. no problem there.
• why, or some time, is there no problem after fixing the file access rights (permissions) and rebooting the machine?

Currently, I have no solution.. the exeptions raises while painting the graph (which uses many paint()/Graphs objects ofc) moving/zooming it. I was able to catch some of the strange exceptions overriding the default visualizerviewer (by jung) and put in a small try-catch-wrapper of the corresponding method (here renderGraph). But other exceptions raised within javax.swing.Component and so on…

And.. how strange: the line

Thu May  7 15:04:28 X.localdomain java[2002] <Warning>: CGSResolveShmemReference : reference offset (65232) exceeds bounds (32768) on shmem obj 0x257e

I’m very appreciate if someone has an idea or solution.

Tags: cgswindow, Java, jung, macosx