Description Pawan Singh 2010-04-30 18:39:02 EDT

Build Identifier: M20090917-0800

Occasionally, when we delete a java project from Package explorer, Eclipse starts consuming 100% CPU and goes away for 10 minutes before popping the dialog that "Do you want to delete this project from workspace". During this time, one can use JConsole to see what Eclipse is doing. All threads are sleep except for the main UI thread which has the following stacktrace. While this is happening, Eclipse shows "hourglass". This means that you cannot do anything in the UI.



Name: main
State: RUNNABLE
Total blocked: 15,513  Total waited: 29

Stack trace: 
org.eclipse.swt.internal.win32.OS.RestoreDC(Native Method)
org.eclipse.swt.graphics.TextLayout.draw(TextLayout.java:771)
org.eclipse.swt.graphics.TextLayout.draw(TextLayout.java:571)
org.eclipse.swt.graphics.TextLayout.draw(TextLayout.java:548)
org.eclipse.jface.viewers.StyledCellLabelProvider.paint(StyledCellLabelProvider.java:404)
org.eclipse.jface.viewers.OwnerDrawLabelProvider$OwnerDrawListener.handleEvent(OwnerDrawLabelProvider.java:59)
org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1027)
org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1012)
org.eclipse.swt.widgets.Tree.CDDS_ITEMPOSTPAINT(Tree.java:849)
org.eclipse.swt.widgets.Tree.wmNotifyChild(Tree.java:7186)
org.eclipse.swt.widgets.Control.wmNotify(Control.java:4877)
org.eclipse.swt.widgets.Composite.wmNotify(Composite.java:1757)
org.eclipse.swt.widgets.Control.WM_NOTIFY(Control.java:4507)
org.eclipse.swt.widgets.Control.windowProc(Control.java:4000)
org.eclipse.swt.widgets.Display.windowProc(Display.java:4602)
org.eclipse.swt.internal.win32.OS.CallWindowProcW(Native Method)
org.eclipse.swt.internal.win32.OS.CallWindowProc(OS.java:2313)
org.eclipse.swt.widgets.Tree.callWindowProc(Tree.java:1530)
org.eclipse.swt.widgets.Control.windowProc(Control.java:4036)
org.eclipse.swt.widgets.Tree.windowProc(Tree.java:5821)
org.eclipse.swt.widgets.Display.windowProc(Display.java:4589)
org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2410)
org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3471)
org.eclipse.jface.operation.ModalContext$ModalContextThread.block(ModalContext.java:173)
org.eclipse.jface.operation.ModalContext.run(ModalContext.java:388)
org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:507)
org.eclipse.ui.internal.progress.ProgressMonitorJobsDialog.run(ProgressMonitorJobsDialog.java:275)
org.eclipse.ui.internal.progress.ProgressManager$4.run(ProgressManager.java:966)
org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
org.eclipse.ui.internal.progress.ProgressManager.busyCursorWhile(ProgressManager.java:1001)
org.eclipse.ui.internal.progress.ProgressManager.busyCursorWhile(ProgressManager.java:976)
org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation.checkInitialConditions(RefactoringWizardOpenOperation.java:167)
org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation.access$0(RefactoringWizardOpenOperation.java:163)
org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation$1.run(RefactoringWizardOpenOperation.java:126)
org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation.run(RefactoringWizardOpenOperation.java:155)
org.eclipse.ltk.internal.ui.refactoring.actions.DeleteResourcesHandler.execute(DeleteResourcesHandler.java:40)
org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:294)
org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
org.eclipse.ui.internal.handlers.HandlerService.executeCommandInContext(HandlerService.java:270)
org.eclipse.ui.internal.ide.actions.LTKLauncher.runCommand(LTKLauncher.java:95)
org.eclipse.ui.internal.ide.actions.LTKLauncher.openDeleteWizard(LTKLauncher.java:47)
org.eclipse.ui.actions.DeleteResourceAction.run(DeleteResourceAction.java:481)
org.eclipse.jdt.internal.ui.refactoring.reorg.DeleteAction.run(DeleteAction.java:162)
org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:274)
org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:250)
org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3880)
org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3473)
org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405)
org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369)
org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221)
org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493)
org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194)
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:368)
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
java.lang.reflect.Method.invoke(Unknown Source)
org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559)
org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
org.eclipse.equinox.launcher.Main.run(Main.java:1311)


Reproducible: Sometimes

Steps to Reproduce:
1. Delete a project from workspace.  I have 312 java projects in the workspace.
2. Eclipse goes spinning for a while before returning with the delete confirmation dialog.