Re: [Plplot-devel] PLplot error handling

[Rafael L. <rla...@us...>]

* Rafael Laboissiere <rla...@us...> [2004-01-01 18:17]:

> * Maurice LeBrun <mj...@ga...> [2004-01-01 03:38]:
> 
> > As for plabort() -- it's to be used when something goes wrong that doesn't
> > require calling plexit() but for which there is no useful recovery.  As such,
> > I can see a clear opportunity for extension here -- an abort handler, set by a
> > new call plsabort().  That way you could turn the abort string (normally sent
> > to stderr) into an exception in your own code and handle at will.  Just an
> > idea.
> 
> I have had exactly the same idea.  If I find some time, I will implement
> this, modelled after plexit/plsexit.  Also, the API section of the DocBook
> documentation on plexit must be updated.

I just implemented/tested/cvs-committed the plabort/plsabort changes.  I
completely mimic what was done for plexit/plsexit.  The only difference is
that the abort handler function does not return an int status code (like the
exit handler):

    void (*abort_handler) (char *errormsg);

I am not still fully convinced we are doing the best we can as regards error
handling in the PLplot library.  I will look at how other libraries do to
get some ideas.

When I will have some time, I will try to use plsexit and plsabort in my
gnome driver to divert error messages to a pop-up window.  This will allow
me to test some ideas about error handling.

-- 
Rafael