From mboxrd@z Thu Jan  1 00:00:00 1970
From: jerome.stadelmann@heig-vd.ch (=?iso-8859-1?q?J=E9r=F4me_Stadelmann?=)
Date: Tue, 10 Feb 2009 13:04:03 +0100
Subject: [ltt-dev] LTTng traces
In-Reply-To: <20090129150625.GA7515@Krystal>
References: <200901221744.39190.jerome.stadelmann@heig-vd.ch>
	<200901290829.25380.jerome.stadelmann@heig-vd.ch>
	<20090129150625.GA7515@Krystal>
Message-ID: <200902101304.03854.jerome.stadelmann@heig-vd.ch>

Thank you for your information. That helped me a lot.
Now I've another question about it, is there a file or header where I can find all the event ID's and their parameters ?
I know that I can find some informations about the parameters in the xxx-trace.c files but is there another way to get this and especially the ID's ?

Thanks in advance
Jerome


On jeudi 29 janvier 2009 16:06:26 Mathieu Desnoyers wrote:
> * J?r?me Stadelmann (jerome.stadelmann at heig-vd.ch) wrote:
> > Hi Mathieu,
> > 
> > Excuse-me for asking again but, is there really no other way to go than scanning the source code in order to understand the traces format and information ?
> > For your question, I'm using the version 0.82.
> > 
> 
> I would recommend :
> 
> starting with ltt/ltt-serialize.c : there is a very lengthy comment in
> there which explains the format strings and how the generic serializer
> writes the event data.
> 
> Looking at ltt/probes/ltt-type-serializer.h to see how the specialized
> probes write the event information.
> 
> And for a more palatable document :
> 
> (latest publicly available version of ISO/IEC 9899:1999, Programming
> Languages - C)
> http://www.open-std.org/JTC1/SC22/WG14/www/docs/n1256.pdf
> 
> Section 6.7.2.1 Structure and union specifiers
> 
> LTTng event fields follow a subset of the ISO C standard for structures.
> Specific note : unlike the standard C implementations, there is no
> padding at the end of the event payload (structure). Also note that
> LTTng does not support bitfields in C structures because they depend on
> the specific compiler implementation.
> 
> Hope this helps,
> 
> Mathieu
> 
> > Best regards,
> > Jerome
> > 
> > Le jeudi 22 janvier 2009 21:07:49 Mathieu Desnoyers, vous avez ?crit :
> > > * Stadelmann J?r?me (jerome.stadelmann at heig-vd.ch) wrote:
> > > > Hi all,
> > > > 
> > > > I'm trying to parse and decode the trace files but it is not so easy.
> > > > Is there a place or a file where I could find a description of all the facilities and the events id's ?
> > > > 
> > > 
> > > In the current LTTng, there is no such thing as "facility" anymore.
> > > Which LTTng version are you working with ?
> > > 
> > > Mathieu
> > > 
> > > > Thank you
> > > > Jerome
> > > > 
> > > > _______________________________________________
> > > > ltt-dev mailing list
> > > > ltt-dev at lists.casi.polymtl.ca
> > > > http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
> > > > 
> > > 
> > 
>