[Pharo-project] [ANN] The Jejak Trace framework

Frank Shearar frank.shearar at gmail.com
Wed Jul 18 12:28:51 EDT 2012


On 18 July 2012 13:55, Goubier Thierry <thierry.goubier at cea.fr> wrote:
> I announce the first availability of the Jejak trace framework at
>
> http://ss3.gemstone.com/ss/Jejak.html
>
> During the VALMADEO project (a PRIR/Région Bretagne funded project directed
> by C. Dezan, <dezan at univ-brest.fr>), we needed a tool to study in detail how
> some algorithms (error correcting codes) could work without errors, but with
> degraded performance. Execution and compilation would report no errors, but
> the performance of the error correcting coding and decoding would be several
> dB below the target. The error correcting code was looping hundreds of times
> over each block of data, making step by step debugging unusable. Profiling,
> message tallies were too coarse to tell us anything. We needed a different
> tool.
>
> The answer was this trace tool : a framework for injecting probes into
> methods, and record their execution. It can record an execution to the
> smallest detail (all calls, all values, all assignments), that over a long
> sequence (hundreds or thousands of calls), and let one navigate freely
> through the recorded trace along with the traced source code. It is capable
> of tracing system, startup or display methods, without interruption or
> blocking the overall image, allowing for very fine non-intrusive system
> analysis.

This means one could get branch coverage analysis, doesn't it?

frank




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