217656 – Mylyn deadlock on startup

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Bug 217656 - Mylyn deadlock on startup

Summary: Mylyn deadlock on startup

Status:	RESOLVED DUPLICATE of bug 217857

Alias:	None

Product:	z_Archived
Classification:	Eclipse Foundation
Component:	Mylyn (show other bugs)
Version:	2.2
Hardware:	PC Windows Vista

Importance:	P1 major (vote)
Target Milestone:	2.3
Assignee:	Mik Kersten
QA Contact:

URL:
Whiteboard:
Keywords:

Depends on:
Blocks:

Reported:	2008-02-04 07:00 EST by Holger Oehm
Modified:	2008-02-28 12:14 EST (History)
CC List:	1 user (show)

See Also:

Attachments
mylyn/context/zip (9.23 KB, application/octet-stream) 2008-02-12 20:41 EST, Mik Kersten	no flags	Details
stacktrace (51.81 KB, text/plain) 2008-02-28 10:29 EST, Holger Oehm	no flags	Details
View All Add an attachment (proposed patch, testcase, etc.)

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Description Holger Oehm

2008-02-04 07:00:41 EST

Build ID: M20070921-1145

Steps To Reproduce:
This is probably not cleanly reproducable but it happens
quite often to me that during startup eclipse freezes (Not Responding).


More information:
I have a stack trace showing the deadlock between the main thread and a worker thread. It seems that
org.eclipse.mylyn.internal.tasks.ui.util.TasksUiExtensionReader.initStartupExtensions() needs to access a class which is currently beeing loaded.

here are the stacktraces:

"main" cpu=21512.54 [reset 21512.54] ms allocated=243386056 B (232.11 MB) [reset 243386056 B (232.11 MB)] prio=6 tid=0x00bd6560 nid=0xf90 waiting for monitor entry [0x0006e000..0x0006fb44]
   java.lang.Thread.State: BLOCKED (on object monitor)
	at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClassImpl(Ljava/lang/String;[Lorg/eclipse/osgi/baseadaptor/hooks/ClassLoadingStatsHook;)Ljava/lang/Class;(ClasspathManager.java:424)
	- waiting to lock <0x180fc5b0> (a org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader)
	at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(Ljava/lang/String;)Ljava/lang/Class;(ClasspathManager.java:413)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(Ljava/lang/String;)Ljava/lang/Class;(DefaultClassLoader.java:189)
	at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(Ljava/lang/String;)Ljava/lang/Class;(BundleLoader.java:340)
	at org.eclipse.osgi.framework.internal.core.SingleSourcePackage.loadClass(Ljava/lang/String;)Ljava/lang/Class;(SingleSourcePackage.java:37)
	at org.eclipse.osgi.framework.internal.core.BundleLoader.findClassInternal(Ljava/lang/String;ZLjava/lang/ClassLoader;)Ljava/lang/Class;(BundleLoader.java:405)
	at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(Ljava/lang/String;Z)Ljava/lang/Class;(BundleLoader.java:369)
	at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(Ljava/lang/String;)Ljava/lang/Class;(BundleLoader.java:357)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;(DefaultClassLoader.java:83)
	at java.lang.ClassLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class;(ClassLoader.java:285)
	at java.lang.ClassLoader.loadClassInternal(Ljava/lang/String;)Ljava/lang/Class;(ClassLoader.java:353)
	- locked <0x180f8768> (a org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader)
	at org.eclipse.mylyn.internal.java.ui.actions.ToggleActiveFoldingAction.<init>()V(ToggleActiveFoldingAction.java:43)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Ljava/lang/reflect/Constructor;[Ljava/lang/Object;)Ljava/lang/Object;(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance([Ljava/lang/Object;)Ljava/lang/Object;(NativeConstructorAccessorImpl.java:39)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance([Ljava/lang/Object;)Ljava/lang/Object;(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance([Ljava/lang/Object;)Ljava/lang/Object;(Constructor.java:494)
	at java.lang.Class.newInstance0()Ljava/lang/Object;(Class.java:350)
	at java.lang.Class.newInstance()Ljava/lang/Object;(Class.java:303)
	at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(Lorg/eclipse/core/runtime/spi/RegistryContributor;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/Object;(RegistryStrategyOSGI.java:170)
	at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(Lorg/eclipse/core/runtime/spi/RegistryContributor;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/Object;(ExtensionRegistry.java:788)
	at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(Ljava/lang/String;)Ljava/lang/Object;(ConfigurationElement.java:243)
	at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(Ljava/lang/String;)Ljava/lang/Object;(ConfigurationElementHandle.java:51)
	at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(Lorg/eclipse/core/runtime/IConfigurationElement;Ljava/lang/String;)Ljava/lang/Object;(WorkbenchPlugin.java:244)
	at org.eclipse.ui.internal.PluginAction.createDelegate()V(PluginAction.java:122)
	at org.eclipse.ui.internal.WWinPluginAction.refreshActionList()V(WWinPluginAction.java:165)
	at org.eclipse.ui.plugin.AbstractUIPlugin$1.run()V(AbstractUIPlugin.java:486)
	at org.eclipse.swt.widgets.RunnableLock.run()V(RunnableLock.java:35)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Z)Z(Synchronizer.java:123)
	- locked <0x182101f0> (a org.eclipse.swt.widgets.RunnableLock)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Z)Z(Display.java:3659)
	at org.eclipse.swt.widgets.Display.readAndDispatch()Z(Display.java:3296)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Lorg/eclipse/jface/window/Window$IExceptionHandler;Lorg/eclipse/swt/widgets/Display;)V(Workbench.java:2389)
	at org.eclipse.ui.internal.Workbench.runUI()I(Workbench.java:2353)
	at org.eclipse.ui.internal.Workbench.access$4(Lorg/eclipse/ui/internal/Workbench;)I(Workbench.java:2219)
	at org.eclipse.ui.internal.Workbench$4.run()V(Workbench.java:466)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Lorg/eclipse/core/databinding/observable/Realm;Ljava/lang/Runnable;)V(Realm.java:289)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Lorg/eclipse/swt/widgets/Display;Lorg/eclipse/ui/application/WorkbenchAdvisor;)I(Workbench.java:461)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(Lorg/eclipse/swt/widgets/Display;Lorg/eclipse/ui/application/WorkbenchAdvisor;)I(PlatformUI.java:149)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(Lorg/eclipse/equinox/app/IApplicationContext;)Ljava/lang/Object;(IDEApplication.java:106)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(Ljava/lang/Object;)Ljava/lang/Object;(EclipseAppHandle.java:169)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(Ljava/lang/Object;)Ljava/lang/Object;(EclipseAppLauncher.java:106)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(Ljava/lang/Object;)Ljava/lang/Object;(EclipseAppLauncher.java:76)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(Ljava/lang/Object;)Ljava/lang/Object;(EclipseStarter.java:363)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run([Ljava/lang/String;Ljava/lang/Runnable;)Ljava/lang/Object;(EclipseStarter.java:176)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;(Method.java:585)
	at org.eclipse.equinox.launcher.Main.invokeFramework([Ljava/lang/String;[Ljava/net/URL;)V(Main.java:508)
	at org.eclipse.equinox.launcher.Main.basicRun([Ljava/lang/String;)V(Main.java:447)
	at org.eclipse.equinox.launcher.Main.run([Ljava/lang/String;)I(Main.java:1173)
	at org.eclipse.equinox.launcher.Main.main([Ljava/lang/String;)V(Main.java:1148)


"Worker-0" cpu=1014.01 [reset 1014.01] ms allocated=10135384 B (9.67 MB) [reset 10135384 B (9.67 MB)] prio=6 tid=0x34f79290 nid=0x115c waiting for monitor entry [0x3580d000..0x3580fadc]
   java.lang.Thread.State: BLOCKED (on object monitor)
	at java.lang.Class.getDeclaredConstructors0(Z)[Ljava/lang/reflect/Constructor;(Native Method)
	at java.lang.Class.privateGetDeclaredConstructors(Z)[Ljava/lang/reflect/Constructor;(Class.java:2357)
	at java.lang.Class.getConstructor0([Ljava/lang/Class;I)Ljava/lang/reflect/Constructor;(Class.java:2671)
	at java.lang.Class.newInstance0()Ljava/lang/Object;(Class.java:321)
	at java.lang.Class.newInstance()Ljava/lang/Object;(Class.java:303)
	at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(Lorg/eclipse/core/runtime/spi/RegistryContributor;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/Object;(RegistryStrategyOSGI.java:170)
	at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(Lorg/eclipse/core/runtime/spi/RegistryContributor;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/Object;(ExtensionRegistry.java:788)
	at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(Ljava/lang/String;)Ljava/lang/Object;(ConfigurationElement.java:243)
	at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(Ljava/lang/String;)Ljava/lang/Object;(ConfigurationElementHandle.java:51)
	at org.eclipse.mylyn.internal.tasks.ui.util.TasksUiExtensionReader.readHyperlinkDetector(Lorg/eclipse/core/runtime/IConfigurationElement;)V(TasksUiExtensionReader.java:296)
	at org.eclipse.mylyn.internal.tasks.ui.util.TasksUiExtensionReader.initStartupExtensions(Lorg/eclipse/mylyn/internal/tasks/ui/util/TaskListWriter;)V(TasksUiExtensionReader.java:183)
	at org.eclipse.mylyn.tasks.ui.TasksUiPlugin.start(Lorg/osgi/framework/BundleContext;)V(TasksUiPlugin.java:433)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run()Ljava/lang/Object;(BundleContextImpl.java:999)
	at java.security.AccessController.doPrivileged(Ljava/security/PrivilegedExceptionAction;)Ljava/lang/Object;(Native Method)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(Lorg/osgi/framework/BundleActivator;)V(BundleContextImpl.java:993)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start()V(BundleContextImpl.java:974)
	at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(I)V(BundleHost.java:346)
	at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(I)V(AbstractBundle.java:260)
	at org.eclipse.osgi.framework.util.SecureAction.start(Lorg/osgi/framework/Bundle;I)V(SecureAction.java:400)
	at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(Ljava/lang/String;Ljava/lang/Class;Lorg/eclipse/osgi/baseadaptor/loader/ClasspathManager;)V(EclipseLazyStarter.java:111)
	at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(Ljava/lang/String;)Ljava/lang/Class;(ClasspathManager.java:417)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(Ljava/lang/String;)Ljava/lang/Class;(DefaultClassLoader.java:189)
	at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(Ljava/lang/String;)Ljava/lang/Class;(BundleLoader.java:340)
	at org.eclipse.osgi.framework.internal.core.SingleSourcePackage.loadClass(Ljava/lang/String;)Ljava/lang/Class;(SingleSourcePackage.java:37)
	at org.eclipse.osgi.framework.internal.core.BundleLoader.findClassInternal(Ljava/lang/String;ZLjava/lang/ClassLoader;)Ljava/lang/Class;(BundleLoader.java:405)
	at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(Ljava/lang/String;Z)Ljava/lang/Class;(BundleLoader.java:369)
	at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(Ljava/lang/String;)Ljava/lang/Class;(BundleLoader.java:357)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;(DefaultClassLoader.java:83)
	at java.lang.ClassLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class;(ClassLoader.java:285)
	at java.lang.ClassLoader.loadClassInternal(Ljava/lang/String;)Ljava/lang/Class;(ClassLoader.java:353)
	- locked <0x180fc5b0> (a org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader)
	at java.lang.Class.getDeclaredConstructors0(Z)[Ljava/lang/reflect/Constructor;(Native Method)
	at java.lang.Class.privateGetDeclaredConstructors(Z)[Ljava/lang/reflect/Constructor;(Class.java:2357)
	at java.lang.Class.getConstructor0([Ljava/lang/Class;I)Ljava/lang/reflect/Constructor;(Class.java:2671)
	at java.lang.Class.newInstance0()Ljava/lang/Object;(Class.java:321)
	at java.lang.Class.newInstance()Ljava/lang/Object;(Class.java:303)
	at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator()Lorg/osgi/framework/BundleActivator;(AbstractBundle.java:136)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start()V(BundleContextImpl.java:970)
	at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(I)V(BundleHost.java:346)
	at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(I)V(AbstractBundle.java:260)
	at org.eclipse.osgi.framework.util.SecureAction.start(Lorg/osgi/framework/Bundle;I)V(SecureAction.java:400)
	at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(Ljava/lang/String;Ljava/lang/Class;Lorg/eclipse/osgi/baseadaptor/loader/ClasspathManager;)V(EclipseLazyStarter.java:111)
	at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(Ljava/lang/String;)Ljava/lang/Class;(ClasspathManager.java:417)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(Ljava/lang/String;)Ljava/lang/Class;(DefaultClassLoader.java:189)
	at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(Ljava/lang/String;)Ljava/lang/Class;(BundleLoader.java:340)
	at org.eclipse.osgi.framework.internal.core.BundleLoader.findClassInternal(Ljava/lang/String;ZLjava/lang/ClassLoader;)Ljava/lang/Class;(BundleLoader.java:408)
	at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(Ljava/lang/String;Z)Ljava/lang/Class;(BundleLoader.java:369)
	at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(Ljava/lang/String;)Ljava/lang/Class;(BundleLoader.java:357)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;(DefaultClassLoader.java:83)
	at java.lang.ClassLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class;(ClassLoader.java:285)
	at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class;(BundleLoader.java:289)
	at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;(BundleHost.java:227)
	at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(Ljava/lang/String;)Ljava/lang/Class;(AbstractBundle.java:1269)
	at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(Lorg/eclipse/core/runtime/spi/RegistryContributor;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/Object;(RegistryStrategyOSGI.java:160)
	at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(Lorg/eclipse/core/runtime/spi/RegistryContributor;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/Object;(ExtensionRegistry.java:788)
	at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(Ljava/lang/String;)Ljava/lang/Object;(ConfigurationElement.java:243)
	at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(Ljava/lang/String;)Ljava/lang/Object;(ConfigurationElementHandle.java:51)
	at org.eclipse.ui.internal.WorkbenchPlugin$1.run()V(WorkbenchPlugin.java:252)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(Lorg/eclipse/swt/widgets/Display;Ljava/lang/Runnable;)V(BusyIndicator.java:49)
	at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(Lorg/eclipse/core/runtime/IConfigurationElement;Ljava/lang/String;)Ljava/lang/Object;(WorkbenchPlugin.java:248)
	at org.eclipse.ui.internal.decorators.LightweightDecoratorDefinition$1.run()V(LightweightDecoratorDefinition.java:117)
	at org.eclipse.core.runtime.SafeRunner.run(Lorg/eclipse/core/runtime/ISafeRunnable;)V(SafeRunner.java:37)
	at org.eclipse.core.runtime.Platform.run(Lorg/eclipse/core/runtime/ISafeRunnable;)V(Platform.java:857)
	at org.eclipse.ui.internal.decorators.LightweightDecoratorDefinition.internalGetDecorator()Lorg/eclipse/jface/viewers/ILightweightLabelDecorator;(LightweightDecoratorDefinition.java:113)
	at org.eclipse.ui.internal.decorators.LightweightDecoratorDefinition.decorate(Ljava/lang/Object;Lorg/eclipse/jface/viewers/IDecoration;)V(LightweightDecoratorDefinition.java:241)
	at org.eclipse.ui.internal.decorators.LightweightDecoratorManager$LightweightRunnable.run()V(LightweightDecoratorManager.java:71)
	at org.eclipse.core.runtime.SafeRunner.run(Lorg/eclipse/core/runtime/ISafeRunnable;)V(SafeRunner.java:37)
	at org.eclipse.core.runtime.Platform.run(Lorg/eclipse/core/runtime/ISafeRunnable;)V(Platform.java:857)
	at org.eclipse.ui.internal.decorators.LightweightDecoratorManager.decorate(Ljava/lang/Object;Lorg/eclipse/ui/internal/decorators/DecorationBuilder;Lorg/eclipse/ui/internal/decorators/LightweightDecoratorDefinition;)V(LightweightDecoratorManager.java:336)
	at org.eclipse.ui.internal.decorators.LightweightDecoratorManager.getDecorations(Ljava/lang/Object;Lorg/eclipse/ui/internal/decorators/DecorationBuilder;)V(LightweightDecoratorManager.java:322)
	at org.eclipse.ui.internal.decorators.DecorationScheduler$1.ensureResultCached(Ljava/lang/Object;ZLorg/eclipse/jface/viewers/IDecorationContext;)V(DecorationScheduler.java:369)
	at org.eclipse.ui.internal.decorators.DecorationScheduler$1.run(Lorg/eclipse/core/runtime/IProgressMonitor;)Lorg/eclipse/core/runtime/IStatus;(DecorationScheduler.java:329)
	at org.eclipse.core.internal.jobs.Worker.run()V(Worker.java:55)

Comment 1 Holger Oehm

2008-02-04 07:11:14 EST

Oh, I forgot to mention: there is a workaround: I delete in the .plugins folder in my workspace all folders named org.eclipse.mylyn.*. Afterwards I can start eclipse without problems. (I have to restore my task data from backup, though).

Regards,
Holger.

Comment 2 Mik Kersten

2008-02-05 12:29:15 EST

Holder: we have not seen this before and it would be very useful if you could try to reproduce it again, but with the latest Weekly build from http://www.eclipse.org/mylyn/downloads/  Also, it would be helpful if before updating you could let us know exactly which version of Mylyn you saw this with (Help -> About Eclipse SDK -> Feature Details.

Steffen: for 2.3 let's investigate whether this could be possible.

Comment 3 Mik Kersten

2008-02-05 13:10:42 EST

Btw, which JDK are you using?

Comment 4 Holger Oehm

2008-02-05 13:16:03 EST

Hello Mik, 
thank you for the fast response. The exact version is 2.2.0.I20071220-1700.  I have it from the update site: http://download.eclipse.org/tools/mylyn/update/e3.3
I just did an update to http://download.eclipse.org/tools/mylyn/update/weekly/e3.3
BTW, last time I started eclipse the deadlock did not occur (before the update).
I have to restart the IDE now, to let the update take effect.

Best regards, Holger.

Comment 5 Holger Oehm

2008-02-05 13:24:02 EST

Hello Mik,

exact version is now 2.3.0.I20080203-2200, and the deadlock did not occur when I restarted. Anything I should try out?

Best regards,
Holger.

Comment 6 Steffen Pingel

2008-02-05 16:25:08 EST

That's good to know. The stack traces look somewhat unusual. Holger, which Java version are you using? 

Do you have the UI Usage Monitor from the Mylyn extras update site installed?

Comment 7 Holger Oehm

2008-02-06 07:31:46 EST

Hi Steffen, 
ok, you got me there, the version is 
java version "1.5.0_13", but not the original SUN vm, it is modified to allow the deadlock detection and to trigger the dump of a stack trace from another process.
I switched to that vm after having several hanging IDEs, then detected the deadlocking threads.
Best Regards,
Holger.

Comment 8 Mik Kersten

2008-02-12 20:41:20 EST

Holger: thanks for this information.  Steffen and I investigated and the underlying problem appears to be that we're getting to a state when a lock is held, which is fine, but that your deadlock detection is not liking.  See bug 86713 for details on that.  We have put in some additional laziness for next Wednesday's Weekly build that will make this scenario even less likely.  However, we don't currently have evidence that it would cause a real deadlock and so did not make any fundamental changes to startup.  If you ever see a real deadlock without this tool please do let us know and we'll investigate further.

Comment 9 Mik Kersten

2008-02-12 20:41:24 EST

Created attachment 89584 [details]
mylyn/context/zip

Comment 10 Holger Oehm

2008-02-28 10:29:20 EST

Created attachment 91008 [details]
stacktrace

A new stacktrace, on Suns VM 1.6.0_01-b06 mixed mode.

Comment 11 Holger Oehm

2008-02-28 10:35:07 EST

Hi Mik, this deadlock occurred on an installation from a colleague of mine, he has mylyn version "2.1.0.v20070927-0900" (I took the version string from the "platform.xml of his installation). I hope its ok, to reopen this bug with the new stack trace. Best regards, Holger.

Comment 12 Steffen Pingel

2008-02-28 12:14:39 EST

Holger, we recently fixed a potential deadlock during startup initialization. It would be great if you could update to the latest 2.3.0 release from the weekly update site and verify if that works for you (the current weekly release is the final 2.3.0 release which will be available from the main update site on Friday):

 http://www.eclipse.org/mylyn/downloads/
 
Please reopen this bug if you still see errors with that release.

*** This bug has been marked as a duplicate of bug 217857 ***