"SWTError: No more handles" error when repeatedly adding a new entry
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Key: DIRSTUDIO-288
URL: https://issues.apache.org/jira/browse/DIRSTUDIO-288
Project: Directory Studio
Issue Type: Bug
Components: studio-ldapbrowser
Affects Versions: 1.1.0
Environment: Windows XP SP2 all current updates applied
Eclipse 3.3
JDK1.5.0_11 with a 512m heap size
Directory Studio 1.1.0
Open DS 1.0.0
Reporter: John Buslawski
Priority: Critical
When adding a new entry in Directory Studio, Eclipse sometimes will crash with
a "SWTError: No more handles" error combined with either an OutOfMemoryError,
an ArrayIndexOutOfBoundsException, or NegativeArraySizeException. The
following steps were used to reproduce the problem:
Connect via LDAP Browser to an LDAP server.
Expand out the tree and pick an group object. In our implementation it would
look like > dc=initiatesystems,dc=com > ou=Groups > ou=System. Right-click on
"cn=All Interactions" and select New Entry. ("All Interactions" is a group
object.)
In the New Entry dialog select "Create from scratch", click Next.
On the page, move the object classes from the right side to the left side one
at a time starting with "account" (the first one).
Once you have moved about 9 or 10 object classes to the left side, Eclipse will
just shutdown with no warning.
The following was in the Eclipse .log file:
!ENTRY org.eclipse.ui 4 0 2008-03-03 16:22:22.806
!MESSAGE Unhandled event loop exception
!STACK 0
org.eclipse.swt.SWTError: No more handles
at org.eclipse.swt.SWT.error(SWT.java:3589)
at org.eclipse.swt.SWT.error(SWT.java:3481)
at org.eclipse.swt.SWT.error(SWT.java:3452)
at org.eclipse.swt.graphics.Image.init(Image.java:1811)
at org.eclipse.swt.graphics.Image.init(Image.java:1936)
at org.eclipse.swt.graphics.Image.<init>(Image.java:490)
at
org.eclipse.jface.resource.ImageDescriptor.createImage(ImageDescriptor.java:289)
at
org.eclipse.jface.resource.ImageDescriptor.createImage(ImageDescriptor.java:227)
at
org.eclipse.jface.resource.ImageDescriptor.createImage(ImageDescriptor.java:205)
at
org.apache.directory.studio.ldapbrowser.ui.wizards.NewEntryObjectclassWizardPage$1.getImage(Unknown
Source)
at
org.eclipse.jface.viewers.WrappedViewerLabelProvider.getImage(WrappedViewerLabelProvider.java:117)
at
org.eclipse.jface.viewers.WrappedViewerLabelProvider.update(WrappedViewerLabelProvider.java:165)
at org.eclipse.jface.viewers.ViewerColumn.refresh(ViewerColumn.java:135)
at
org.eclipse.jface.viewers.AbstractTableViewer.doUpdateItem(AbstractTableViewer.java:386)
at
org.eclipse.jface.viewers.StructuredViewer$UpdateItemSafeRunnable.run(StructuredViewer.java:466)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
at org.eclipse.core.runtime.Platform.run(Platform.java:857)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:46)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:193)
at
org.eclipse.jface.viewers.StructuredViewer.updateItem(StructuredViewer.java:2026)
at
org.eclipse.jface.viewers.AbstractTableViewer.internalRefreshAll(AbstractTableViewer.java:692)
at
org.eclipse.jface.viewers.AbstractTableViewer.internalRefresh(AbstractTableViewer.java:630)
at
org.eclipse.jface.viewers.AbstractTableViewer.internalRefresh(AbstractTableViewer.java:617)
at
org.eclipse.jface.viewers.StructuredViewer$7.run(StructuredViewer.java:1433)
at
org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1368)
at
org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1330)
at
org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1431)
at org.eclipse.jface.viewers.ColumnViewer.refresh(ColumnViewer.java:503)
at
org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1390)
at
org.apache.directory.studio.ldapbrowser.ui.wizards.NewEntryObjectclassWizardPage.add(Unknown
Source)
at
org.apache.directory.studio.ldapbrowser.ui.wizards.NewEntryObjectclassWizardPage.access$200(Unknown
Source)
at
org.apache.directory.studio.ldapbrowser.ui.wizards.NewEntryObjectclassWizardPage$7.widgetSelected(Unknown
Source)
at
org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:227)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:938)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3682)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3293)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:820)
at org.eclipse.jface.window.Window.open(Window.java:796)
at
org.apache.directory.studio.ldapbrowser.ui.actions.NewEntryAction.run(Unknown
Source)
at
org.apache.directory.studio.ldapbrowser.common.actions.proxy.BrowserActionProxy.run(Unknown
Source)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
at
org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:545)
at
org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:490)
at
org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:402)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:938)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3682)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3293)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2389)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2353)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219)
at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)
at
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:289)
at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at
org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:106)
at
org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:153)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:363)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:504)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:443)
at org.eclipse.equinox.launcher.Main.run(Main.java:1169)
at org.eclipse.equinox.launcher.Main.main(Main.java:1144)
!ENTRY org.eclipse.ui 4 0 2008-03-03 16:23:21.728
!MESSAGE Unhandled event loop exception
!STACK 0
org.eclipse.swt.SWTException: Failed to execute runnable
(java.lang.OutOfMemoryError: Java heap space)
at org.eclipse.swt.SWT.error(SWT.java:3563)
at org.eclipse.swt.SWT.error(SWT.java:3481)
at
org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:126)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3659)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3296)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:820)
at org.eclipse.jface.window.Window.open(Window.java:796)
at
org.apache.directory.studio.ldapbrowser.ui.actions.NewEntryAction.run(Unknown
Source)
at
org.apache.directory.studio.ldapbrowser.common.actions.proxy.BrowserActionProxy.run(Unknown
Source)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
at
org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:545)
at
org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:490)
at
org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:402)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:938)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3682)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3293)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2389)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2353)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219)
at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)
at
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:289)
at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at
org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:106)
at
org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:153)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:363)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:504)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:443)
at org.eclipse.equinox.launcher.Main.run(Main.java:1169)
at org.eclipse.equinox.launcher.Main.main(Main.java:1144)
Caused by: java.lang.OutOfMemoryError: Java heap space
We think the error comes from using createImage() rather than getImage() in the
getImage() method in the LabelProvider inner class of
NewEntryObjectclassWizardPage. It appears as though the images keep getting
recreated with freeing them. For example, the following line:
BrowserUIPlugin.getDefault().getImageDescriptor(
BrowserUIConstants.IMG_OCD_ABSTRACT ).createImage();
should be replaced with:
BrowserUIPlugin.getDefault().getImage( BrowserUIConstants.IMG_OCD_ABSTRACT );
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