Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!auspex!guy
From: guy@auspex.auspex.com (Guy Harris)
Newsgroups: comp.unix.questions
Subject: Re: sleep()ing less than a second
Keywords: nap() function SysV BSD source
Message-ID: <2774@auspex.auspex.com>
Date: 20 Dec 89 21:48:54 GMT
References: <89348.231211BACON@MTUS5.BITNET> <2754@servax0.essex.ac.uk> <5235@tekig5.PEN.TEK.COM>
Organization: Auspex Systems, Santa Clara
Lines: 12

>    Some time ago, I was posed with the problem of doing the equivalent
>of nap() on BSD.

The equivalent of "nap" in 4.3BSD is "usleep", and comes with the
system.  In 4.2BSD, you can either use "setitimer" etc. as you've done,
or you can use "select".

>Since SysV had nap(),

Correction.  *Some* versions of System V *may* have "nap()"; I don't
think it's universally available.  In System V Release 3, you may be
able to use "poll" in much the same way you use "select" in 4.2BSD.