Path: utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!samsung!munnari.oz.au!labtam!eyrie!phoenix!avalon
From: avalon@phoenix.pub.uu.oz.au (Darren Reed)
Newsgroups: comp.unix.programmer
Subject: Re: gets() during signal
Message-ID: <1990Dec15.023757.11042@phoenix.pub.uu.oz.au>
Date: 15 Dec 90 02:37:57 GMT
References: <25232@adm.brl.mil> <RANG.90Dec10164915@nexus.cs.wisc.edu> <11275@arctic.nprdc.navy.mil> <38801@nigel.ee.udel.edu>
Organization: Phoenix ComSystem. Public UNIX Melbourne Australia.
Lines: 17



Can someone tell me how signals work inside C on unix ?
I've seen an alarm() used to timeout a write() call in something like this:

		alarm(15);
		write(fd, buf, num);

which caused the write to exit if it wasnt successful after 15 seconds.

I'm looking for a way of using 'HOT' keys in a program and I'd like to
use the keyboard to interrupt the program (cease whatever its doing) and
then go on to process the new keypress.  I noticed there is a SIGIO, but
from what I've read in the odd post, that needs some ioctl() or similar
calls to setup.

any info would be greatly appreciated.