Re: [tracecompass-dev] StringStateValue - limit on string size with FULL

[Alexandre Montplaisir <alexmonthy@xxxxxxxxxxxx>]

Hi Rocky,

You can use the nightly builds, which are built every day from the 
master branch, and which include that particular commit:
http://download.eclipse.org/tracecompass/master/rcp/

We could also cherry-pick that commit to the stable-2.0 branch, it is 
not too intrusive but is quite an important bug fix. With that you could 
update a 2.0 RCP to receive that change.

Cheers,
Alexandre


On 2016-07-29 05:33 PM, Rocky Dunlap - NOAA Affiliate wrote:
> Geneviève,
>
> That's good news.
>
> When will the new commit be released?  Until then I will work around with
> 127 char limit.
>
> Thanks,
> Rocky
>
> On Fri, Jul 29, 2016 at 3:28 PM, Geneviève Bastien <
> gbastien+lttng@xxxxxxxxxxxx> wrote:
>
> > Hi Rocky,
> >
> > The history tree used to limit the size of Strings to 127 bytes, but it
> > wasn't checked, it was hoping that the caller would not add larger strings.
> > This was fixed in commit [1] The strings now have a maximum of 32767 bytes.
> > But from the date, it is not part of TraceCompass 2.0. If you get a
> > development snapshot though you'll be able to put larger strings in the
> > history tree.
> >
> > [1]
> > http://git.eclipse.org/c/tracecompass/org.eclipse.tracecompass.git/commit/?id=8182f36f96bbe3f33cc4c4838853239d2efe315a
> >
> > Best regards,
> > Geneviève
> >
> >
> >
> >
> >
> > On 07/29/2016 05:01 PM, Rocky Dunlap - NOAA Affiliate wrote:
> >
> > I have a state system set up using the FULL history backend.  I noticed
> > that I was receiving the stack trace below when the history is read back in
> > from file.  The issue goes away when I limit the size of strings in
> > StringStateValue to less than 100 bytes.
> >
> > I tried to up the blocksize from 64*1024 to some very large value, but
> > that did not seem to do the trick.  I did not study it exhaustively, but I
> > did not see any checking in the HTNode write code to prevent buffer
> > overruns.  Maybe that is the issue?
> >
> > Basically, I'd like to know how I can store longer strings using the FULL
> > history option.  It works fine when using the INMEM option, but I'll need
> > the disk option for larger traces.
> >
> >
> > java.lang.NegativeArraySizeException
> > at
> > org.eclipse.tracecompass.internal.statesystem.core.backend.historytree.HTInterval.readFrom(HTInterval.java:187)
> > at
> > org.eclipse.tracecompass.internal.statesystem.core.backend.historytree.HTNode.readNode(HTNode.java:218)
> > at
> > org.eclipse.tracecompass.internal.statesystem.core.backend.historytree.HT_IO.readNode(HT_IO.java:140)
> > at
> > org.eclipse.tracecompass.internal.statesystem.core.backend.historytree.HistoryTree.buildLatestBranch(HistoryTree.java:223)
> > at
> > org.eclipse.tracecompass.internal.statesystem.core.backend.historytree.HistoryTree.<init>(HistoryTree.java:197)
> > at
> > org.eclipse.tracecompass.internal.statesystem.core.backend.historytree.HistoryTreeBackend.<init>(HistoryTreeBackend.java:148)
> > at
> > org.eclipse.tracecompass.statesystem.core.backend.StateHistoryBackendFactory.createHistoryTreeBackendExistingFile(StateHistoryBackendFactory.java:116)
> > at
> > org.eclipse.tracecompass.tmf.core.statesystem.TmfStateSystemAnalysisModule.createFullHistory(TmfStateSystemAnalysisModule.java:302)
> > at
> > org.eclipse.tracecompass.tmf.core.statesystem.TmfStateSystemAnalysisModule.executeAnalysis(TmfStateSystemAnalysisModule.java:227)
> > at
> > org.eclipse.tracecompass.tmf.core.analysis.TmfAbstractAnalysisModule$1.run(TmfAbstractAnalysisModule.java:351)
> > at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
> >
> >
> > Thanks!
> > Rocky
> >
> >
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> >
> >
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