Re: [ptp-dev] Problems with Eclipse session hang after starting proxy

[Greg Watson <g.watson@xxxxxxxxxxxx>]

I don't claim to understand this code, but I fixed a couple of places  
not checking for null return.

Anyone willing to rewrite and/or document the UI code so that it is  
understandable will get automatic entry to the PTP hall of fame :-)

Greg


On Oct 11, 2007, at 9:46 AM, Dave Wootton wrote:

> Greg
> The hang seems to be gone now. I did notice another minor problem  
> that I
> think might be related. When I shut down my PTP session and restart  
> it, I
> notice the following error showing up in the error log. I suspect it's
> part of Eclipse shutdown since I don't see it until I restart the PTP
> session
>
> Dave
>
> org.osgi.framework.BundleException: Exception in
> org.eclipse.ptp.core.PTPCorePlugin.stop() of bundle  
> org.eclipse.ptp.core.
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl.stop 
> (BundleContextImpl.java:1056)
> at
> org.eclipse.osgi.framework.internal.core.BundleHost.stopWorker 
> (BundleHost.java:457)
> at
> org.eclipse.osgi.framework.internal.core.AbstractBundle.suspend 
> (AbstractBundle.java:526)
> at
> org.eclipse.osgi.framework.internal.core.Framework.suspendBundle 
> (Framework.java:1148)
> at
> org.eclipse.osgi.framework.internal.core.StartLevelManager.decFWSL 
> (StartLevelManager.java:675)
> at
> org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartL 
> evel(StartLevelManager.java:291)
> at
> org.eclipse.osgi.framework.internal.core.StartLevelManager.shutdown 
> (StartLevelManager.java:261)
> at
> org.eclipse.osgi.framework.internal.core.SystemBundle.suspend 
> (SystemBundle.java:188)
> at
> org.eclipse.osgi.framework.internal.core.Framework.shutdown 
> (Framework.java:622)
> at
> org.eclipse.osgi.framework.internal.core.Framework.close 
> (Framework.java:525)
> at org.eclipse.osgi.framework.internal.core.OSGi.close(OSGi.java:41)
> at
> org.eclipse.core.runtime.adaptor.EclipseStarter.shutdown 
> (EclipseStarter.java:399)
> at
> org.eclipse.core.runtime.adaptor.EclipseStarter.run 
> (EclipseStarter.java:197)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke 
> (NativeMethodAccessorImpl.java:64)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke 
> (DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:615)
> 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.NullPointerException
> at
> org.eclipse.ptp.ui.managers.JobManager.removeProcess 
> (JobManager.java:95)
> at
> org.eclipse.ptp.ui.views.ParallelJobsView.handleEvent 
> (ParallelJobsView.java:292)
> at
> org.eclipse.ptp.internal.core.elements.PJob.fireRemoveProcesses 
> (PJob.java:286)
> at
> org.eclipse.ptp.internal.core.elements.PJob.removeProcesses 
> (PJob.java:237)
> at
> org.eclipse.ptp.internal.core.elements.PQueue.removeJobs 
> (PQueue.java:180)
> at
> org.eclipse.ptp.rmsystem.AbstractResourceManager.removeQueues 
> (AbstractResourceManager.java:1059)
> at
> org.eclipse.ptp.rmsystem.AbstractResourceManager.cleanUp 
> (AbstractResourceManager.java:738)
> at
> org.eclipse.ptp.rmsystem.AbstractResourceManager.shutdown 
> (AbstractResourceManager.java:511)
> at
> org.eclipse.ptp.internal.core.ModelManager.stopResourceManagers 
> (ModelManager.java:278)
> at
> org.eclipse.ptp.internal.core.ModelManager.shutdown 
> (ModelManager.java:250)
> at org.eclipse.ptp.core.PTPCorePlugin.stop(PTPCorePlugin.java:188)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl$3.run 
> (BundleContextImpl.java:1040)
> at java.security.AccessController.doPrivileged 
> (AccessController.java:242)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl.stop 
> (BundleContextImpl.java:1036)
> ... 20 more
> Root exception:
> java.lang.NullPointerException
> at
> org.eclipse.ptp.ui.managers.JobManager.removeProcess 
> (JobManager.java:95)
> at
> org.eclipse.ptp.ui.views.ParallelJobsView.handleEvent 
> (ParallelJobsView.java:292)
> at
> org.eclipse.ptp.internal.core.elements.PJob.fireRemoveProcesses 
> (PJob.java:286)
> at
> org.eclipse.ptp.internal.core.elements.PJob.removeProcesses 
> (PJob.java:237)
> at
> org.eclipse.ptp.internal.core.elements.PQueue.removeJobs 
> (PQueue.java:180)
> at
> org.eclipse.ptp.rmsystem.AbstractResourceManager.removeQueues 
> (AbstractResourceManager.java:1059)
> at
> org.eclipse.ptp.rmsystem.AbstractResourceManager.cleanUp 
> (AbstractResourceManager.java:738)
> at
> org.eclipse.ptp.rmsystem.AbstractResourceManager.shutdown 
> (AbstractResourceManager.java:511)
> at
> org.eclipse.ptp.internal.core.ModelManager.stopResourceManagers 
> (ModelManager.java:278)
> at
> org.eclipse.ptp.internal.core.ModelManager.shutdown 
> (ModelManager.java:250)
> at org.eclipse.ptp.core.PTPCorePlugin.stop(PTPCorePlugin.java:188)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl$3.run 
> (BundleContextImpl.java:1040)
> at java.security.AccessController.doPrivileged 
> (AccessController.java:242)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl.stop 
> (BundleContextImpl.java:1036)
> at
> org.eclipse.osgi.framework.internal.core.BundleHost.stopWorker 
> (BundleHost.java:457)
> at
> org.eclipse.osgi.framework.internal.core.AbstractBundle.suspend 
> (AbstractBundle.java:526)
> at
> org.eclipse.osgi.framework.internal.core.Framework.suspendBundle 
> (Framework.java:1148)
> at
> org.eclipse.osgi.framework.internal.core.StartLevelManager.decFWSL 
> (StartLevelManager.java:675)
> at
> org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartL 
> evel(StartLevelManager.java:291)
> at
> org.eclipse.osgi.framework.internal.core.StartLevelManager.shutdown 
> (StartLevelManager.java:261)
> at
> org.eclipse.osgi.framework.internal.core.SystemBundle.suspend 
> (SystemBundle.java:188)
> at
> org.eclipse.osgi.framework.internal.core.Framework.shutdown 
> (Framework.java:622)
> at
> org.eclipse.osgi.framework.internal.core.Framework.close 
> (Framework.java:525)
> at org.eclipse.osgi.framework.internal.core.OSGi.close(OSGi.java:41)
> at
> org.eclipse.core.runtime.adaptor.EclipseStarter.shutdown 
> (EclipseStarter.java:399)
> at
> org.eclipse.core.runtime.adaptor.EclipseStarter.run 
> (EclipseStarter.java:197)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke 
> (NativeMethodAccessorImpl.java:64)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke 
> (DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:615)
> 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)
>
> Dave
>
>
>
> Greg Watson <g.watson@xxxxxxxxxxxx>
> Sent by: ptp-dev-bounces@xxxxxxxxxxx
> 10/11/2007 07:43 AM
> Please respond to
> Parallel Tools Platform general developers <ptp-dev@xxxxxxxxxxx>
>
>
> To
> Parallel Tools Platform general developers <ptp-dev@xxxxxxxxxxx>
> cc
>
> Subject
> Re: [ptp-dev] Problems with Eclipse session hang after starting proxy
>
>
>
>
>
>
> Dave,
>
> I found a potential problem in ParallelMachinesView. After this fix
> I'm no longer able to reproduce the problem. Can you give it a try
> and let me know if it looks ok?
>
> Thanks,
>
> Greg
>
> On Oct 9, 2007, at 2:56 PM, Greg Watson wrote:
>
> > Ok, I'm able to repeat this. Will try and fix asap.
> >
> > Greg
> >
> > On Oct 9, 2007, at 2:18 PM, Greg Watson wrote:
> >
> > > Dave,
> > >
> > > Is anything displayed in the PTP Runtime at this point (machines,
> > > nodes, etc.)? Also, which version of RSE are you using? The
> > > release version, or have you checked it out from CVS?
> > >
> > > Greg
> > >
> > > On Oct 9, 2007, at 12:34 PM, Dave Wootton wrote:
> > >
> > > > I'm running into a problem which now seems to happen every time I
> > > > start my
> > > > proxy. Up until the point where I start the proxy, my test
> > > > Eclipse session
> > > > runs normally. Once I start the proxy, the Eclipse UI works for a
> > > > while
> > > > then is completely frozen. There is no response to mouse clicks
> > > > anywhere,
> > > > and if I obscure and expose part of the Eclipse session window,
> > > > it does
> > > > not repaint. This leads me to believe something is blocked or
> > > > looping on
> > > > one of the main UI threads. I think this is happening after the
> > > > front end
> > > > receives a machine state event in response to the proxy creating
> > > > a new
> > > > machine (default) since that's the last message I see before the
> > > > hang. If
> > > > I click the UI quickly enough, before I see this message, then it
> > > > responds
> > > > for a couple seconds before it hangs.
> > > >
> > > > Has anyone else seen this with the latest code level?
> > > >
> > > > I started to debug this by suspending the UI threads and looking
> > > > at call
> > > > stacks, but I'm not sure how to identify a UI thread out of the
> > > > dozen or
> > > > so threads in the session. I'm not sure this is the correct  
> > > > approach
> > > > either since I suppose the UI thread could be running normally
> > > > and is just
> > > > blocked waiting for notification from some ther thread.
> > > >
> > > > This has been happening off and on for me for the last few days.
> > > > Now it
> > > > seems to be consistent. The only code I have been changing today
> > > > is my
> > > > parallel tab code, which I'm not even getting to now.
> > > >
> > > > I don't see any messages in the error log, or elsewhere.
> > > >
> > > > Any suggestions?
> > > >
> > > > Thanks
> > > > Dave
> > > > _______________________________________________
> > > > ptp-dev mailing list
> > > > ptp-dev@xxxxxxxxxxx
> > > > https://dev.eclipse.org/mailman/listinfo/ptp-dev
> > >
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> >
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