Re: [linuxtools-dev] TMFEventsCache Exception

[Bernd Hufmann <bhufmann@xxxxxxxxx>]

Hi Xavier

thanks for the information.

I was checking the code base and it seems that the trace reference (experiment) is null when trying to populate the events table. This filling of the table is done right after the trace is opened or when an event occurs (e.g. scrolling). The trace reference is only null when creating the table.  For me it looks like a concurrency issue and I wonder if this only happens when having automated tests like you have in your environment. I'm not able to reproduce the error. So it's hard for me troubleshoot. Please let me know if you are able to pinpoint the problem.

Thanks
Bernd

On Wed, Apr 3, 2013 at 7:59 AM, Xavier Raynaud <xavier.raynaud@xxxxxxxxx> wrote:

Hi,

It occurred with linuxtools version 1.2, during an automatic validation of a tool based on TMF.
I think that it occurs because the trace experiment is disposed too early.

I will investigate deeper.

Xavier

On 04/03/2013 01:41 PM, Bernd Hufmann wrote:

Hi Xavier

No, I haven't seen this exception before. To be able to investigate further could you please send us more information?

- Which version of TMF you were running?

- What actions did you do when it happens (e.g. changing tracing, opening/closing traces while indexing, scrolling etc)?

Thanks
Bernd

On Wed, Apr 3, 2013 at 3:40 AM, Xavier Raynaud <xavier.raynaud@xxxxxxxxx> wrote:

Hi,

While playing with TMF, I obtained the following exception:

java.lang.NullPointerException
    at org.eclipse.linuxtools.tmf.ui.viewers.events.TmfEventsCache$1.run(TmfEventsCache.java:363)

Have you ever seen something like that?

Xavier
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