Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!hplabs!hpfcdc!rml
From: rml@hpfcdc.HP.COM (Bob Lenk)
Newsgroups: comp.unix.questions
Subject: Re: problems with SIGALRM.....
Message-ID: <5740040@hpfcdc.HP.COM>
Date: 11 Apr 89 23:00:17 GMT
References: <9709@netnews.upenn.edu>
Organization: HP Ft. Collins, Co.
Lines: 13

> The explanation of my earlier problem with SIGALRM was that sleep(3) 
> also happens to use SIGALRM to time the interval it sleeps for. Now, 
> I'm not sure why it works under Ultrix 3.0 ......

The Ultrix sleep() is apparently based on or compatible with System V or
POSIX, while the SunOS sleep() is apparently based on BSD.  Both use
SIGALRM.  System V's does various pushups related to a previously
requested SIGALRM to behave essentially as if it did not use the signal.
This should be described in the sleep(3) manual entries.

		Bob Lenk
		hplabs!hpfcla!rml
		rml%hpfcla@hplabs.hp.com