Path: utzoo!utgpu!water!watmath!clyde!rutgers!cmcl2!nrl-cmf!ames!claris!apple!kateley
From: kateley@Apple.COM (Jim Kateley)
Newsgroups: comp.unix.aux
Subject: Re: Interprocess communications
Message-ID: <7824@apple.Apple.Com>
Date: 31 Mar 88 16:56:59 GMT
References: <1387@randvax.UUCP>
Reply-To: kateley@apple.UUCP (Jim Kateley)
Organization: Apple Computer Inc, Cupertino, CA
Lines: 35

In article <1387@randvax.UUCP> frel@rand-unix.UUCP (Dave Frelinger) writes:
>
>Hello,
>    I have a simple question, what forms of interprocess communications
>does A/UX support?  Does it use System V, B 4.X, or a both flavors of IP
>communications?
>
On page 15 of the A/UX System Overview manual, it states:
"Another important function of the kernel is interprocess
commnuication (IPC).  A/UX fully supports the System V Release 2
IPC mechanisms."
...
"Signals are another form of UNIX interprocess communication."
...
"A/UX supports both System V and BSD signals"


Additionally, in the A/UX Release notes, Version 1.0, on page 1-2:
"A/UX supports two different versions of signals:  the standard V.2 and the
4.2 reliable signals.  To use 4.2 signals in  a program, issue a call to the
set42sig routine before issuing any calls to the signal function."
...
"The signal-handler setting is not inherited across an exec call, although
job control and process grjoups are available to shell programs."

>
>			Thanks,
>
>			Dave

-- 
Jim Kateley          UUCP: {sun, voder, nsc, mtxinu, dual}!apple!kateley
S,P,HnS!             DOMAIN: kateley@apple.COM  Applelink: kateley1
Disclaimer:   What I say, think, or smell does not reflect any policy or
	      stray thought by Apple Computer, Inc.