Re: [linuxtools-dev] Integration of GDB Tracepoints in Linux Tools

[Alexander Kurtakov <akurtako@xxxxxxxxxx>]

> It would be great to use a checklist!

Here is a start 
http://wiki.eclipse.org/Linux_Tools_Project/New_Subproject_Checklist 
It's not complete but you can always tell me if I have misses smth.

> 
> The TMF code currently sits in the LTTng sub-project (component? tool?).
> 
> Here's the SVN location:
> dev.eclipse.org/svnroot/technology/org.eclipse.linuxtools/lttng
> 
> The TMF plugins have the form: org.eclipse.linuxtools.tmf*
> 
> I uploaded some documentation a while ago and it can be found
> in org.eclipse.linuxtools.tmf.doc (be aware that it is a bit out of date).
> 
> TMF is far from completed and is still being actively extended by us and it
> is not yet ready for version 1.0.

If TMF is going to be used by more than one component it would be best to make 
it toplevel component with it's own trunk/tags/branches. 
I've looked and it doesn't make sense to merge with the profilingframework(not 
stable enough), thus it would be good to keep the profilingframework separate 
for now.

If noone objects I propose creating a 
http://dev.eclipse.org/svnroot/technology/org.eclipse.linuxtools/tmf? (are we 
going to change the name?) and put tmf there. 
Of course keep in mind the soon to come 0.7 release and commit things you are 
not sure will be ready for it only in branches.

Regards,
Alexander Kurtakov


> 
> Best Regards,
> /fc
> 
> On Tue, Nov 9, 2010 at 3:30 PM, Alexander Kurtakov 
<akurtako@xxxxxxxxxx>wrote:
> > Hi Francois,
> > I'm writing  a checklist for new subprojects it would be good if we can
> > validate the gdb tracepoint subproject by this checklist.
> > About the TMF can you  point me to the svn path so I can take a look
> > whether
> > it is mergeable with the current profiling framework.
> > 
> > Alex K.
> > 
> > > Hello Linux Toolers,
> > > 
> > > This is to announce that we would like to contribute another tracing
> > > tool integration, GDBTrace, to the Linux Tools "suite". We aim at
> > > delivering this in time for Indigo.
> > > 
> > > GDB tracepoints provide low-overhead tracing for C/C++ applications. It
> > > might work for other languages, but I'm not aware of it. In a nutshell,
> > 
> > you
> > 
> > > instrument your code, and then start it, control it and analyze the
> > > saved data with the help of the GDB front-end. See
> > > http://sourceware.org/gdb/onlinedocs/gdb/Tracepoints.html#Tracepointsfo
> > > r more info. As a bonus, the LTTng UST (User Space Tracing) can be made
> > > to work with GDB.
> > > 
> > > The Eclipse integration we are working on is based on CDT 7.0.1 and GDB
> > 
> > 7.2
> > 
> > > and re-uses parts of the LTTng-TMF and the DSF-GDB components. The
> > 
> > DSF-GDB
> > 
> > > component, which wraps the GDB front-end, has already been contributed
> > > to CDT by my colleague Marc Khouzam (3 offices down the hall :-). One
> > > of our goals is inter-operability between the GDBTrace views and the
> > > CDT Debug views. Thanks to DSF, that shouldn't be too hard (famous
> > > last words).
> > > 
> > > While we're at it, we would like to split the TMF (Tracing and
> > > Monitoring Framework) from the LTTng project and make it a Linux Tools
> > > framework component of its own. This component is already used by a
> > > number of internal tools and it doesn't make much sense to keep it
> > > within LTTng as new tracing tools start to be integrated. The only
> > > concern we have is
> > 
> > that
> > 
> > > the TMF acronym is already taken within Eclipse (for EMP's Textual
> > > Modeling Framework) but I don't think that it is a big issue and there
> > 
> > are
> > 
> > > other examples of overloaded 3-letters acronyms.
> > > 
> > > BTW, Alex K. also suggested that it might be a good idea to consider an
> > > integration of the tracing framework and the profiling framework
> > > (already in Linux Tools). I think that it is certainly worth at least
> > > an investigation but I don't really have time to do this. Anybody
> > 
> > interested?
> > 
> > > So, in conclusion, we would like to:
> > > - Create a new tracing project - GDBTrace
> > > - Carve out TMF from the current LTTng component and make it a project
> > > on its own
> > > 
> > > If this is OK with everyone, I would like to start the integration and
> > > re-factoring in a couple of weeks or so (with the help and guidance of
> > 
> > our
> > 
> > > valliant teams leads).
> > > 
> > > Best Regards,
> > 
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