No more handles

[doc]

Eclipse Platform
Version: 3.4.2
Build id: M20090211-1700


After intensive use of the swing designer I get the following exception (taken from log file):

Code: Select all

!ENTRY com.instantiations.designer.core 4 4 2009-08-10 14:18:54.089
!MESSAGE Designer [7.1.0.200907201341]: No more handles
!STACK 0
org.eclipse.swt.SWTError: No more handles
   at org.eclipse.swt.SWT.error(SWT.java:3803)
   at org.eclipse.swt.SWT.error(SWT.java:3695)
   at org.eclipse.swt.SWT.error(SWT.java:3666)
   at org.eclipse.swt.graphics.Image.getImageData(Image.java:1447)
   at com.instantiations.designer.swing.utils.SwingImageUtils.convertImage_AWT_to_SWT(SwingImageUtils.java:633)
   at com.instantiations.designer.swing.utils.SwingImageUtils.makeShots(SwingImageUtils.java:314)
   at com.instantiations.designer.swing.model.component.ComponentInfo.createShotImages(ComponentInfo.java:235)
   at com.instantiations.designer.swing.model.component.ComponentInfo.refresh_fetch(ComponentInfo.java:110)
   at com.instantiations.designer.swing.model.component.ContainerInfo.refresh_fetch(ContainerInfo.java:200)
   at com.instantiations.designer.core.model.ObjectInfo$4.run(ObjectInfo.java:391)
   at com.instantiations.designer.core.utils.execution.ExecutionUtils.runDesignTime(ExecutionUtils.java:87)
   at com.instantiations.designer.core.model.ObjectInfo.refresh(ObjectInfo.java:388)
   at com.instantiations.designer.core.editor.DesignPage.internal_refreshGEF_withProgress(DesignPage.java:443)
   at com.instantiations.designer.core.editor.DesignPage.access$800(DesignPage.java:57)
   at com.instantiations.designer.core.editor.DesignPage$7$1.run(DesignPage.java:316)
   at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:178)
   at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
   at org.eclipse.swt.widgets.Display.syncExec(Display.java:4251)
   at com.instantiations.designer.core.editor.DesignPage$7.run(DesignPage.java:313)
   at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:464)
   at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:372)
   at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:507)
   at com.instantiations.designer.core.editor.DesignPage.internal_refreshGEF(DesignPage.java:334)
   at com.instantiations.designer.core.editor.UndoManager.refreshDesignerEditor(UndoManager.java:444)
   at com.instantiations.designer.core.editor.DesignPage.refreshGEF(DesignPage.java:292)
   at com.instantiations.designer.core.editor.actions.RefreshAction.run(RefreshAction.java:30)
   at com.instantiations.designer.core.editor.actions.DesignPageAction.run(DesignPageAction.java:23)
   at com.instantiations.designer.core.editor.errors.ExceptionComposite$2.widgetSelected(ExceptionComposite.java:97)
   at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:228)
   at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
   at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
   at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3823)
   at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3422)
   at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2384)
   at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2348)
   at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2200)
   at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:495)
   at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288)
   at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:490)
   at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
   at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
   at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193)
   at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
   at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
   at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:386)
   at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
   at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
   at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
   at org.eclipse.equinox.launcher.Main.main(Main.java:1212)


Any further source code parsing fails. The only way to fix the problem is to restart eclipse.

[Alexander.Mitin]

Which OS you are using?

[doc]

Windows XP SP2

[Eric Clayberg]

Are you using an custom Swing widgets or just standard components?

How much memory do you have assigned to Eclipse?

When Eclipse throws an "No more handles" exception, restarting Eclipse is pretty much the only option.

[doc]

Eclipse is starting with
-Xmx1536m -XX:MaxPermSize=128m

There is one custom swing widget in my dialogs which depends on a JComboBox.

The exception also occures while editing frames without the custom widget...

[Eric Clayberg]

Unfortunately, that exception is a downstream side effect of something (or somethings) that happened earlier in the session (anywhere in Eclipse). It can be associated with custom widgets, but that is only one possible explanation.

If you create a new JFrame in a new session, and then start adding widgets and/or editing, are you able to reproduce this?

[doc]

No, the exception occurs usually after a few hours of editing, (re)parsing and designing of most diverse ui elements.
As far as I can see there is no possibility to derive a reproducible way of use.

[Eric Clayberg]

If you have been editing in Eclipse for several hours, this could be a side effect of almost anything.

Assuming it is even Swing Designer related, we would need some sort of test case to reproduce it.