[lttng-dev] c/c++ wrappers for lttng commands

[Anand Neeli]

Hi All,
i'm writing a wrapper code to start and stop tracing sessions. And i am
using lttng-ctl library for this.
I have setup session using lttng commands and using the wrapper to
start/stop session.
in the wrapper i'm calling lttng_start_tracing(char* session_name), i see
that that the program gets stuck and doesnt return from lttng_start_tracing.
Does anyone know what is the issue i'm seeing. (before i can start
debugger). I see that lttng-ctl connects checks for sessiond and send some
data to it, suspect something here.

Thanks,
Anand Neeli


On Thu, Jan 15, 2015 at 12:54 AM, Simon Marchi <simon.marchi at polymtl.ca>
wrote:

> On 14 January 2015 at 14:02, Anand Neeli <anand.neeli at gmail.com> wrote:
> > Hi All,
> >
> > Is there any code (or did anyone implement) c/c++ wrappers API's to
> > create,delete, add event to lttng session.
> > The conventional way to create, add event, delete lttng sessions is
> through
> > lttng shell commands, i'm looking to do this using a c/c++ API's.
> >
> > Thanks,
> > Anand Neeli
>
> Hi Arnand,
>
> I think you are looking for the liblttng-ctl library.
>
> http://git.lttng.org/?p=lttng-tools.git;a=tree;f=src/lib/lttng-ctl;hb=HEAD
>
> It is the library that the lttng command is based on, but you can also
> use it in your program. I don't know if there is an official
> documentation, but if you want to know how to do something using the
> API, you can always look up the lttng command code and see what it
> does.
>
> It is in C, however. If you want to make an wrapper that is more C++
> oriented, I am sure it would be a very appreciated contribution :).
>
> Simon
>
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