Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!umich!yale!mintaka!bloom-beacon!eru!luth!sunic!mcsun!ukc!icdoc!qmw-cs!jeremyr
From: jeremyr@cs.qmw.ac.uk (Jeremy Roussak)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Breaking out of a series of routines
Message-ID: <2491@sequent.cs.qmw.ac.uk>
Date: 10 Jul 90 08:14:49 GMT
References: <25526@cs.yale.edu>
Reply-To: jeremyr@cs.qmw.ac.uk (Jeremy Roussak)
Organization: Computer Science Dept, QMW, University of London, UK.
Lines: 11

In article <25526@cs.yale.edu> tarr-michael@CS.Yale.EDU (michael tarr) writes:
>
>On an error condition I wish to immediately stop processing a large file
>and break out of about 10 routines that have been calling each other and
>return to my main event loop. Is there any way to do this without
>passing and error flag to each of the calling routines?

You could use signals, which are described in TechNote 88.  They are
provided for just this purpose.

Jeremy Roussak