[
Date Prev][
Date Next][
Thread Prev][
Thread Next][
Date Index][
Thread Index]
[
List Home]
|
[xtext-dev] Xtext: Deadlock ?
|
Hi there,
First of all: I'm sorry to bother you guys but I'm not familiar with the
Xtext source so I probably need some advice.
While I was writing an Xcore model I noted that Eclipse (Eclipse DSL
Tools, Version: Kepler Service Release 1, Build id: 20130919-0819) often
ended up hanging, so I started my profiler and attached it to my instance.
It immediately showed a potential deadlock situation which would explain
my issue (the report has been attached to this mail).
Having a look into the code XtextDocument$XtextDocumentLocker showed up
that there are two mutex mechanisms used simultaneously (monitor based
and read-write-lock-based). I suspect that this might be the root cause
but I need to thoroughly investigate the source in order to confirm that.
Is there anyone else having the same issue or at least someone who can
share some insights why the dual mutex is needed ?
If not I will try to setup an xtext environment in order to create a
testcase when I find the time.
Best regards
Daniel Kasmeroglu
Frozen threads found (potential deadlock)
It seems that the following threads have not changed their stack for more than 10 seconds.
These threads are possibly (but not necessarily!) in a deadlock or hung.
main <--- Frozen for at least 1m 48 sec
org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.readOnly(IUnitOfWork)
org.eclipse.xtext.ui.editor.model.XtextDocument.readOnly(IUnitOfWork)
org.eclipse.xtext.ui.editor.outline.impl.OutlineRefreshJob.iternalRefreshOutlineModel(OutlineTreeState, OutlineTreeState, IOutlineTreeProvider)
org.eclipse.xtext.ui.editor.outline.impl.OutlineRefreshJob$1.run()<2 recursive calls>
org.eclipse.xtext.ui.util.DisplayRunnableWithResult$1.run()
org.eclipse.ui.internal.UILockListener.doPendingWork()
org.eclipse.ui.internal.UILockListener.aboutToWait(Thread)
org.eclipse.core.internal.jobs.LockManager.aboutToWait(Thread)
org.eclipse.core.internal.jobs.ThreadJob.waitForRun(ThreadJob, IProgressMonitor, InternalJob, Thread)
org.eclipse.core.internal.jobs.ThreadJob.joinRun(ThreadJob, IProgressMonitor)
org.eclipse.core.internal.jobs.ImplicitJobs.begin(ISchedulingRule, IProgressMonitor, boolean)
org.eclipse.core.internal.jobs.JobManager.beginRule(ISchedulingRule, IProgressMonitor)
org.eclipse.core.internal.resources.WorkManager.checkIn(ISchedulingRule, IProgressMonitor)
org.eclipse.core.internal.resources.Workspace.prepareOperation(ISchedulingRule, IProgressMonitor)
org.eclipse.core.internal.resources.Workspace.run(IWorkspaceRunnable, ISchedulingRule, int, IProgressMonitor)
org.eclipse.ui.actions.WorkspaceModifyOperation.run(IProgressMonitor)
org.eclipse.ui.internal.editors.text.WorkspaceOperationRunner.run(IRunnableWithProgress, ISchedulingRule)
org.eclipse.ui.internal.editors.text.WorkspaceOperationRunner.run(boolean, boolean, IRunnableWithProgress)
org.eclipse.ui.texteditor.AbstractDocumentProvider.executeOperation(AbstractDocumentProvider$DocumentProviderOperation, IProgressMonitor)
org.eclipse.ui.texteditor.AbstractDocumentProvider.saveDocument(IProgressMonitor, Object, IDocument, boolean)
org.eclipse.ui.texteditor.AbstractTextEditor.performSave(boolean, IProgressMonitor)
org.eclipse.ui.texteditor.AbstractTextEditor.doSave(IProgressMonitor)
org.eclipse.xtext.ui.editor.XtextEditor.doSave(IProgressMonitor)
org.eclipse.ui.texteditor.AbstractTextEditor$TextEditorSavable.doSave(IProgressMonitor)
org.eclipse.ui.Saveable.doSave(IProgressMonitor, IShellProvider)
org.eclipse.ui.internal.SaveableHelper.doSaveModel(Saveable, IProgressMonitor, IShellProvider, boolean)
org.eclipse.ui.internal.SaveableHelper$3.run(IProgressMonitor)
org.eclipse.ui.internal.SaveableHelper$5.run(IProgressMonitor)
org.eclipse.jface.operation.ModalContext.runInCurrentThread(IRunnableWithProgress, IProgressMonitor)
org.eclipse.jface.operation.ModalContext.run(IRunnableWithProgress, boolean, IProgressMonitor, Display)
org.eclipse.ui.internal.WorkbenchWindow$13.run()
org.eclipse.swt.custom.BusyIndicator.showWhile(Display, Runnable)
org.eclipse.ui.internal.WorkbenchWindow.run(boolean, boolean, IRunnableWithProgress)
org.eclipse.ui.internal.SaveableHelper.runProgressMonitorOperation(String, IRunnableWithProgress, IRunnableContext, IShellProvider)
org.eclipse.ui.internal.SaveableHelper.runProgressMonitorOperation(String, IRunnableWithProgress, IWorkbenchWindow)
org.eclipse.ui.internal.SaveableHelper.saveModels(ISaveablesSource, IWorkbenchWindow, boolean)
org.eclipse.ui.internal.SaveableHelper.savePart(ISaveablePart, IWorkbenchPart, IWorkbenchWindow, boolean)
org.eclipse.ui.internal.WorkbenchPage.saveSaveable(ISaveablePart, IWorkbenchPart, boolean, boolean)
org.eclipse.ui.internal.WorkbenchPage.saveEditor(IEditorPart, boolean)
org.eclipse.ui.internal.handlers.SaveHandler.execute(ExecutionEvent)
org.eclipse.ui.internal.handlers.HandlerProxy.execute(ExecutionEvent)
org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(IEclipseContext, Map, Event, IEvaluationContext)
sun.reflect.GeneratedMethodAccessor115.invoke(Object, Object[])
sun.reflect.DelegatingMethodAccessorImpl.invoke(Object, Object[])
java.lang.reflect.Method.invoke(Object, Object[])
org.eclipse.e4.core.internal.di.MethodRequestor.execute()
org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(Object, Class, Class, Object, PrimaryObjectSupplier, PrimaryObjectSupplier, boolean)
org.eclipse.e4.core.internal.di.InjectorImpl.invoke(Object, Class, Object, PrimaryObjectSupplier, PrimaryObjectSupplier)
org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(Object, Class, IEclipseContext, IEclipseContext, Object)
org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(ExecutionEvent)
org.eclipse.core.commands.Command.executeWithChecks(ExecutionEvent)
org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(Object, Object)
org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(ParameterizedCommand, IEclipseContext)
org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.executeCommand(ParameterizedCommand, Event)
org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.press(List, Event)
org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.processKeyEvent(List, Event)
org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.filterKeySequenceBindings(Event)
org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.access$0(KeyBindingDispatcher, Event)
org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher$KeyDownFilter.handleEvent(Event)
org.eclipse.swt.widgets.EventTable.sendEvent(Event)
org.eclipse.swt.widgets.Display.filterEvent(Event)
org.eclipse.swt.widgets.Widget.sendEvent(Event)
org.eclipse.swt.widgets.Widget.sendEvent(int, Event, boolean)
org.eclipse.swt.widgets.Widget.sendEvent(int, Event)
org.eclipse.swt.widgets.Widget.sendKeyEvent(int, int, long, long, Event)
org.eclipse.swt.widgets.Widget.sendKeyEvent(int, int, long, long)
org.eclipse.swt.widgets.Widget.wmChar(long, long, long)
org.eclipse.swt.widgets.Control.WM_CHAR(long, long)
org.eclipse.swt.widgets.Canvas.WM_CHAR(long, long)
org.eclipse.swt.widgets.Control.windowProc(long, int, long, long)
org.eclipse.swt.widgets.Canvas.windowProc(long, int, long, long)
org.eclipse.swt.widgets.Display.windowProc(long, long, long, long)
org.eclipse.swt.internal.win32.OS.DispatchMessageW(MSG)
org.eclipse.swt.internal.win32.OS.DispatchMessage(MSG)
org.eclipse.swt.widgets.Display.readAndDispatch()
org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run()
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm, Runnable)
org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(MApplicationElement, IEclipseContext)
org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(MApplicationElement)
org.eclipse.ui.internal.Workbench$5.run()
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm, Runnable)
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Display, WorkbenchAdvisor)
org.eclipse.ui.PlatformUI.createAndRunWorkbench(Display, WorkbenchAdvisor)
org.eclipse.ui.internal.ide.application.IDEApplication.start(IApplicationContext)
org.eclipse.equinox.internal.app.EclipseAppHandle.run(Object)
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(Object)
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(Object)
org.eclipse.core.runtime.adaptor.EclipseStarter.run(Object)
org.eclipse.core.runtime.adaptor.EclipseStarter.run(String[], Runnable)
sun.reflect.NativeMethodAccessorImpl.invoke0(Method, Object, Object[])
sun.reflect.NativeMethodAccessorImpl.invoke(Object, Object[])
sun.reflect.DelegatingMethodAccessorImpl.invoke(Object, Object[])
java.lang.reflect.Method.invoke(Object, Object[])
org.eclipse.equinox.launcher.Main.invokeFramework(String[], URL[])
org.eclipse.equinox.launcher.Main.basicRun(String[])
org.eclipse.equinox.launcher.Main.run(String[])
org.eclipse.equinox.launcher.Main.main(String[])
Worker-11 <--- Frozen for at least 1m 43 sec
org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.readOnly(IUnitOfWork)
org.eclipse.xtext.ui.editor.model.XtextDocument.readOnly(IUnitOfWork)
org.eclipse.xtext.ui.editor.validation.ValidationJob.createIssues(IProgressMonitor)
org.eclipse.xtext.ui.editor.validation.ValidationJob.run(IProgressMonitor)
org.eclipse.core.internal.jobs.Worker.run()
Worker-14 <--- Frozen for at least 1m 46 sec
org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.readOnly(IUnitOfWork)
org.eclipse.xtext.ui.editor.model.XtextDocument.readOnly(IUnitOfWork)
org.eclipse.xtext.ui.editor.DirtyStateEditorSupport$UpdateEditorStateJob.run(IProgressMonitor)
org.eclipse.core.internal.jobs.Worker.run()
Worker-6 <--- Frozen for at least 1m 55 sec
org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.modify(IUnitOfWork)
org.eclipse.xtext.ui.editor.model.XtextDocument.internalModify(IUnitOfWork)
org.eclipse.xtext.ui.editor.reconciler.XtextReconciler.run(IProgressMonitor)
org.eclipse.core.internal.jobs.Worker.run()
