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From std-unix-request@uunet.uu.net Thu Oct 11 22:46:46 1990
Received: from cs.utexas.edu by uunet.uu.net (5.61/1.14) with SMTP
id AA05681; Thu, 11 Oct 90 22:46:46 -0400
Posted-Date: 12 Oct 90 00:31:15 GMT
Received: by cs.utexas.edu (5.64/1.78)
From: peter@ficc.ferranti.com (Peter da Silva)
Newsgroups: comp.std.unix
Subject: Re: Standards Update, IEEE 1003.4: Real-time Extensions
Message-Id: <13506@cs.utexas.edu>
References: <524@usenix.ORG> <528@usenix.ORG> <540@usenix.ORG> <553@usenix.ORG> <13132@cs.utexas.edu> <13156@cs.utexas.edu> <13442@cs.utexas.edu>
Sender: fletcher@cs.utexas.edu
Reply-To: peter@ficc.ferranti.com (Peter da Silva)
Organization: Xenix Support, FICC
X-Submissions: std-unix@uunet.uu.net
Date: 12 Oct 90 00:31:15 GMT
To: std-unix@uunet.uu.net
Submitted-by: peter@ficc.ferranti.com (Peter da Silva)
In article <13442@cs.utexas.edu> fouts@bozeman.bozeman.ingr (Martin Fouts) writes:
> Short persistance IPC mechanisms found in multithreaded shared memory
> implementations consist of a small region of memory and a lock guarding
> that region. Producer/consumer parallelism using this mechanism does
> not need to be visible. Effectively, this is the shared memory
> equivalent of an unnamed pipe.
Effectively, this *is* shared memory. And shared memory has proven itself
to be a viable candidate for insertion into the name space.
I didn't say that every application of an IPC mevchanism should have its
own entry in the name space. Creating a file for each element in a shared
memory region makes about as much sense as creating a file for each
message in a pipe. But the region itself should be visible from the
outside.
--
Peter da Silva. `-_-'
+1 713 274 5180. 'U`
peter@ferranti.com
Volume-Number: Volume 21, Number 201