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From: chris@mimsy.UUCP (Chris Torek)
Newsgroups: comp.unix.questions,comp.unix.wizards
Subject: Re: "usleep" routine in HP's
Message-ID: <17358@mimsy.UUCP>
Date: 7 May 89 08:55:53 GMT
References: <23340@shemp.CS.UCLA.EDU> <5740041@hpfcdc.HP.COM> <11166@bloom-beacon.MIT.EDU>
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 12

In article <11166@bloom-beacon.MIT.EDU> adtaiwo@athena.mit.edu
(Ademola Taiwo) writes:
>Okay guys, How does one implement select, sigrelse, sigpause and
>sighold with signals.

If you have neither a 4.1-style `jobs library' nor 4.2-style signals,
you cannot implement sighold, sigpause, and sigrelse reliably.

You cannot reliably implement select with anything other than poll().
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7163)
Domain:	chris@mimsy.umd.edu	Path:	uunet!mimsy!chris