[lttng-dev] babeltrace API question

[lttng-dev] babeltrace API question

[Sebastien Boisvert]

Hi,


I would like to add filter options to babeltrace.

I am exploring the babeltrace API.


When the type_id of a field (bt_declaration) is CTF_TYPE_INTEGER, how can one determine whether to use bt_ctf_get_uint64 or bt_ctf_get_int64 to retrieve the value ?

[lttng-dev] babeltrace API question

[Philippe Proulx]

On Sat, Oct 29, 2016 at 5:35 PM, Sebastien Boisvert <sboisvert at gydle.com> wrote:
> Hi,
>
>
> I would like to add filter options to babeltrace.
>
> I am exploring the babeltrace API.

I would strongly advise you NOT to use this API as we're about to
deprecate it in a few weeks when Babeltrace 2.0 is released. A whole new
API based on reference counts will be available when it's released and
you will be able to develop a filter plugin which can be inserted in a
graph of connected components where a stream of events and other
notifications flow.

In the meantime you can use the Python bindings (this API will remain
maintained) to achieve what you want.

Phil

>
>
> When the type_id of a field (bt_declaration) is CTF_TYPE_INTEGER, how can one determine whether to use bt_ctf_get_uint64 or bt_ctf_get_int64 to retrieve the value ?
> _______________________________________________
> lttng-dev mailing list
> lttng-dev at lists.lttng.org
> https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev

[lttng-dev] babeltrace API question

[Sebastien Boisvert]

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I look forward for this new API.

It sounds really cool.


Thanks


On 2016-10-29 11:49 PM, Philippe Proulx wrote:
> On Sat, Oct 29, 2016 at 5:35 PM, Sebastien Boisvert <sboisvert at gydle.com> wrote:
>> Hi,
>>
>>
>> I would like to add filter options to babeltrace.
>>
>> I am exploring the babeltrace API.
> I would strongly advise you NOT to use this API as we're about to
> deprecate it in a few weeks when Babeltrace 2.0 is released. A whole new
> API based on reference counts will be available when it's released and
> you will be able to develop a filter plugin which can be inserted in a
> graph of connected components where a stream of events and other
> notifications flow.
>
> In the meantime you can use the Python bindings (this API will remain
> maintained) to achieve what you want.
>
> Phil
>
>>
>> When the type_id of a field (bt_declaration) is CTF_TYPE_INTEGER, how can one determine whether to use bt_ctf_get_uint64 or bt_ctf_get_int64 to retrieve the value ?
>> _______________________________________________
>> lttng-dev mailing list
>> lttng-dev at lists.lttng.org
>> https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev

-- 
Dr. Sébastien BOISVERT, Ph.D.
Bioinformatics Software Specialist
GYDLE inc.
sboisvert at gydle.com
+33 6 67 99 71 50 (Mobile, France)
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