Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ulowell!apollo!weber_w
From: weber_w@apollo.COM (Walt Weber)
Newsgroups: comp.sys.apollo
Subject: Re: IPC vs SOCKETS
Message-ID: <433d2c3d.10b48@apollo.COM>
Date: 15 May 89 16:28:00 GMT
References: <8905150141.AA08887@umix.cc.umich.edu>
Reply-To: weber_w@apollo.COM (Walt Weber)
Organization: Apollo Computer, Chelmsford, MA
Lines: 49

In article <8905150141.AA08887@umix.cc.umich.edu> GBOPOLY1@NUSVM.BITNET (fclim) writes:
>The book by Maurice Bach, "Design of the Unix Operating System", is a
>good place to look into these system calls.

We (software support) have given Marc Rochkind's book as a reference, since
it covers SysV FIFO's, semaphores, queues, and shared memory, which many other
books do not address. For your convenience, here's the info you need to order:
"Advanced UNIX Programming", by Marc J. Rochkind ; Prentice-Hall, paperback
ISBN is 0-13-011800-1.

>So, we have a sort of hierarchy.  Pipes() may be used only between related
>processes.  The other IPC facilities on System V may be used between
>unrelated processes in a non-distributed environment.  Finally, BSD socket
>may be used in a network.

Excellent summary!  Now if you include the next level up from the socket
abstraction, you would be addressing the Network Computing System topics
covered in these Apollo manuals (sr9 & sr10):

     - Network Computing System (NCS) Reference        #010200
     - Concurrent Programming Support (CPS) Reference  #010233

(Yes, it is a plug :-)

> ...  System V (maybe Release 2 and above) have a
>new machanism known as streams.  This works across networks.  I do not
>have any info on this except (1) there is an article by Dennis Ritchie
>in the July (?) 84 issue of the AT&T Journal -- special issue on UNIX
>-- and (2) the Streams Programmer's Guide (?) published by AT&T.

You can also acquire the following Apollo documentation which should
include the information available from (2), above.  Keep in mind that
you will need to consider adding a device driver to the system, so I
have included the reference for GPIO programming, as well (sr10):

      - Writing Device Drivers with GPIO Calls     #000959-A00
      - Getting Started with SysV Streams          #012276-A00
      - Programming with SysV Streams              #012275-A00
      - Programming  with the SysV Streams         #012205-A00
          Transport Layer Interface (TLI)

>fclim          --- gbopoly1 % nusvm.bitnet @ cunyvm.cuny.edu

...walt...

-- 
Walt Weber                            Apollo Computer          
(508) 256-6600 x8315                  People's Republic of Massachusetts
-The views expressed herein are personal, and not binding on Apollo-