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List:       kde-devel
Subject:    Re: mm library (fwd)
From:       <pbrown () redhat ! com>
Date:       1999-06-09 18:22:02
[Download RAW message or body]

Damn.  Here's what I got from rse.

---
  Preston Brown                                    Systems Engineer
  pbrown@redhat.com                                Red Hat, Inc. 

---------- Forwarded message ----------
Date: Wed, 9 Jun 1999 19:35:54 +0200
From: Ralf S. Engelschall <rse@engelschall.com>
To: pbrown@redhat.com
Subject: Re: mm library

On Wed, Jun 09, 1999, pbrown@redhat.com wrote:

> is it possible to use the mm library between disassociated processes, i.e.
> processes that weren't forked from a common parent (not including init of
> course)?  I am very interested in finding a good portable shared memory
> implementation that has this ability.

No, MM cannot be used for this. Because for this the underlaying shared memory
implementation has to support this. And not all implementations (e.g. 4.4BSD
anon mmap(), etc.) support this mode. So, to achieve the portability MM has to
use use the common denominator of all implementations. And this means that the
processes have to directly related, i.e. created via fork().

                                       Ralf S. Engelschall
                                       rse@engelschall.com
                                       www.engelschall.com

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