[lttng-dev] [babeltrace] About the type read and write

[Mathieu Desnoyers]

* Mathieu Desnoyers (mathieu.desnoyers at efficios.com) wrote:
> * Hui Zhu (teawater at gmail.com) wrote:
> > Hi,
> > 
> > I just tried to use libbabeltrace to read and write the CTF file.  But
> > I cannot find the api to read some type of CTF for example
> > CTF_TYPE_ENUM, CTF_TYPE_STRUCT.
> 
> AFAIU, the API bt_ctf_get_field_list allows to get the list of
> definitions from a struct, variant, array, or sequence (any compound
> type). Julien, I think the header documentation of this function should
> really be updated, can you look into that ?

Updated in the master branch.

> 
> Indeed, I also cannot see any API to get the enum string from the field.
> Julien, can we add it ?

Now supported in the master branch.

Feedback welcome,

Thanks!

Mathieu

> 
> > And I cannot find the api file to write to the CTF file. (I check the
> > code of babeltrace-log and found that it use the function that is not
> > API)
> 
> Currently, babeltrace only does CTF-to-text and text-log-to-CTF
> conversions. As you noticed, it does not expose API to write into all
> CTF types at this stage.
> 
> There is a prototype I am aware of that does just that (write custom CTF
> files): Javeltrace. See the post here
> http://lists.lttng.org/pipermail/lttng-dev/2012-August/018393.html for
> details.
> 
> Thanks,
> 
> Mathieu
> 
> > 
> > Could you help me with it?
> > 
> > Thanks,
> > Hui
> > 
> > _______________________________________________
> > lttng-dev mailing list
> > lttng-dev at lists.lttng.org
> > http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
> 
> -- 
> Mathieu Desnoyers
> Operating System Efficiency R&D Consultant
> EfficiOS Inc.
> http://www.efficios.com
> 
> _______________________________________________
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-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com