Path: utzoo!mnetor!uunet!lll-winken!lll-tis!ames!pasteur!ucbvax!decwrl!decvax!mandrill!hal!oxtrap!rsj
From: rsj@oxtrap.UUCP (Rick Jaffe)
Newsgroups: comp.unix.questions
Subject: longjmp(3)
Message-ID: <3400@oxtrap.UUCP>
Date: 17 Apr 88 22:28:48 GMT
Reply-To: rsj@oxtrap.UUCP (Rick Jaffe)
Organization: Oxford, Ann Arbor
Lines: 7

when it receives a signal (SIGUSR1) telling it not to bother: the
answer isn't needed any more.  The program assures that locks and
global variables won't cause any trouble, and executes a longjmp(3)
from the signal handler back up to the main procedure.

Is this "safe"?  Is there a better way, short of setting a global
flag, and then either returning from the several hundred procedure
calls or executing a longjmp() from inside the recursive procedure?