Xref: utzoo comp.lang.c:9475 comp.unix.xenix:2053
Path: utzoo!mnetor!uunet!ncc!alberta!att-ih!chinet!les
From: les@chinet.UUCP (Leslie Mikesell)
Newsgroups: comp.lang.c,comp.unix.xenix
Subject: Re: Interprocess Communication on UNIX SVR3
Message-ID: <4873@chinet.UUCP>
Date: 19 Apr 88 18:38:12 GMT
References: <2592@ihuxv.ATT.COM>
Reply-To: les@chinet.UUCP (Leslie Mikesell)
Distribution: na
Organization: Chinet - Public Access Unix
Lines: 19
Keywords: Producer/Consumer Problem

In article <2592@ihuxv.ATT.COM> bareta@ihuxv.ATT.COM (Benyukhis) writes:
>
>Can anyone outthere help me code the producer/consumer problem
>in "C".  The prolog is as follows:  the producer has to produce
>a char and deposit it in the shareable buffer for consumer to pick it up
>from.  Both processes must use binary semaphores as a means of
>synchronization. 

This sounds like you could use a pipe and avoid the need for any
semaphores.  If this is a simple 1 to 1 arrangement, you can just
write producer to output to stdout, and consumer to read from stdin.
Then let the shell set up the pipe with "producer | consumer".  Or,
one program can fork off a child process with a pipe connected (popen()
will do it all for you).
If you have multiple producers/one consumer or they cannot have the
same parent process, you can use a FIFO or named pipe (see mknod(1)
and mknod(2)).
  
  Les Mikesell