Fwd: Fwd: R.F.C. Should we abandon User-land probes?

[Martin Hunt]

On Thu, 2005-10-20 at 15:20 -0500, James Dickens wrote:
> oops send prematurely
> 
> ---------- Forwarded message ----------
> From: James Dickens <jamesd.wi@gmail.com>
> Date: Oct 20, 2005 3:18 PM
> Subject: Re: Fwd: R.F.C. Should we abandon User-land probes?
> To: Martin Hunt <hunt@redhat.com>
> Cc: "systemtap@sources.redhat.com" <systemtap@sources.redhat.com>
> 
> 
> On 10/20/05, Martin Hunt <hunt@redhat.com> wrote:
> > On Thu, 2005-10-20 at 15:06 -0500, James Dickens wrote:
> >
> > >  yes those work fine in kernel code, since variables to access
> > > components of the structs/unions are allready availible for the
> > > systemtap code and tapsets, but that is not the case of userland,
> > > especially in the case of C++ classes/struct. So the user required to
> > > enable guru-mode.
> >
> > Whatever gave you that idea?
> 
> because systemtap doesn't understand struct/union etc. how else would
> it know what are the members of the struct if they are only used in
> userland.

ELFs and DWARFs???