Re: [eclipse-clp-users] Debugging in embedded eclipse

On Mittwoch, 4. April 2018 22:31:58 CEST Joachim Schimpf wrote:
> On 04/04/18 15:04, Victor Mataré wrote:
> > Hello,
> > 
> > I'm trying to debug/trace eclipse code that is being called from an
> > instance embedded in C++ code, but I can't seem to trigger interactive
> > tracing. trace(p) does not trigger tracing for p, and trace/0 or debug/0
> > cannot even be called. I.e. in C++ i do:
> > 
> > post_goal(EC_atom("trace"));
> > EC_resume();
> > 
> > Which results in:
> > 
> > calling an undefined procedure profile : trace in module eclipse
> > 
> > However I'm not even sure EC_atom is the correct way of referencing a
> > predicate with arity 0. Can't find anything covering this in the
> > documentation either. trace/0 also seems to be in none of the standard
> > modules, for example when I get a list of all available modules in a
> > plain interactive eclipse:
> > 
> > [eclipse 14]: findall(M, current_module(M), L), writeln(L).
> > [eclipse, sepia_kernel, dfid, eclipse_language, profile, toplevel,
> > ecl_compiler, tracer_tty, suspend, development_support, lists]
> > 
> > Then trace/0 doesn't seem to be in any of them, i.e. any of eclipse/trace,
> > sepia_kernel/trace, ... yield the same error as above.
> > 
> > So what's going on here? How do I trace embedded code?
> 
> Hi Victor,
> 
> trace/0 and debug/0 are not actually predicates, they are commands
> interpreted by the interactive toplevel.  trace/1 is in principle the
> correct predicate to use, but in an embedded situation you have to load any
> development tools explicitly beforehand.
> 
> You can use either the command line tools or the graphical tools.  For
> reference, I have summarized the necessary steps on our wiki at
> 
> http://eclipseclp.org/wiki/Examples/DebuggingEmbeddedECLiPSeCode
> 
> Let me know if anything is unclear!
> 
> 
> Cheers,
> Joachim
> 
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Thanks Joachim, that looks awesome. Didn't even know about this wiki before. From a quick glance it looks very informative. The only thing that's unclear to me is why you're recommending against using interactive debugging in an embedded application in general.

Best regards,
Victor