frel@randvax.UUCP (Dave Frelinger) (03/30/88)
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?
Thanks,
Davegerald@umb.umb.edu (Gerald Ostheimer) (03/31/88)
In article <1387@randvax.UUCP> frel@rand-unix.UUCP (Dave Frelinger) writes: > > 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? > Thanks, To me it looks as if Apple tried to provide the best possible support for both Berkeley 4.2 and AT&T System V (Release 2). A/UX got about as close to being a full System V implementation as you can get without being one. As for inter- process communications, you get all of System V IPC (semaphores, shared memory...), but you also get Berkeley 4.2 sockets. -- Gerald <gerald@grn.umb.edu> Permission is granted to make and distribute verbatim or modified copies of this opinion, as long as this permission notice is preserved.
kateley@Apple.COM (Jim Kateley) (04/01/88)
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.
phil@Apple.COM (Phil Ronzone) (04/09/88)
In article <623@umb.umb.edu> gerald@umb.UUCP (Gerald Ostheimer) writes: >To me it looks as if Apple tried to provide the best possible support for both >Berkeley 4.2 and AT&T System V (Release 2). A/UX got about as close to being >a full System V implementation as you can get without being one. As for inter- Ahem - A/UX IS System V. I am wondering just what prompts the statement "close being one without ...". Again, it IS System V. -- ------------------------------------------------------------------------------- Philip K. Ronzone, A/UX Technical Manager APPLELINK: RONZONE1 Apple Computer, Mail Stop 27AJ, 10500 N. DeAnza Blvd. Cupertino, CA 95014 UUCP: ...!{sun,voder,nsc,mtxinu,dual,unisoft}!apple!phil