[lttng-dev] Babeltrace, Python3, and the Event Declarations

[Philippe Proulx]

On Wed, Jul 20, 2016 at 12:45 PM, Thibault, Daniel
<Daniel.Thibault at drdc-rddc.gc.ca> wrote:
>    I'm tinkering with the Python 3 bindings for babeltrace, and I've come upon an odd feature: for a given trace, if I ask for the EventDeclarations (using the TraceHandle), I end up getting the set of event declarations duplicated as many times as there are channels. And I mean exact duplicates.
>
>    It's understandable that event declarations may recur between traces part of a single collection, but within a single trace?  And between channels?
>
>    I looked at the raw metadata file of the trace, and that duplication is also present

Then Babeltrace does its job right.

> , so I suppose other babeltrace bindings than Python will run into this.

They do not exist. But yes, they would.

Phil

>
> Daniel U. Thibault, M.Sc.²
>
> Informaticien scientifique, CME-PSC, Centre de recherches de Valcartier
> Recherche et développement pour la défense Canada / Gouvernement du Canada
> daniel.thibault at drdc-rddc.gc.ca / Tél: 418-844-4000x4245 Téléc: 418-844-4538
> daniel.thibault at forces.gc.ca / Tél: 418-844-4000x4245 Téléc: 418-844-4538
>
> Computer Scientist, MCCS-SPC, Valcartier Research Centre
> Defence Research and Development Canada / Government of Canada
> daniel.thibault at drdc-rddc.gc.ca / Tel: 418-844-4000x4245 Fax: 418-844-4538
> daniel.thibault at forces.gc.ca / Tel: 418-844-4000x4245 Fax: 418-844-4538
>
> DRDC is an agency of the Department of National Defence / RDDC est une agence du ministère de la Défense nationale
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