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From: fkittred@bbn.com (Fletcher Kittredge)
Newsgroups: comp.sys.hp
Subject: Re: HP-UX 8.0: memory mapped files?
Keywords: HP-UX mmap
Message-ID: <64019@bbn.BBN.COM>
Date: 3 May 91 18:03:31 GMT
References: <1991Apr25.092827@ead.dsa.com>
Sender: news@bbn.com
Reply-To: fkittred@spca.bbn.com (Fletcher Kittredge)
Organization: Bolt Beranek and Newman Inc., Cambridge MA
Lines: 34

In article <1991Apr25.092827@ead.dsa.com> schorr@ead.dsa.com (Andrew J. Schorr) writes:
>I'm a Sun user that is very impressed (isn't everyone) with the
>new 700 series.  I would consider purchasing these machines, but
>have never used HP-UX.
>
>From reading various messages in this group, I have gotten
>the following impressions: 1. HP-UX 8.0 supports shared libraries;
>2. HP-UX 8.0 does NOT support memory-mapping of files.
>
>Is point 2 correct?  If so, how does HP-UX implement shared libraries?
>Certainly under SunOS, the shared libraries are brought into the
>process address space by mapping the files.
>
>What's the real story?  In my opinion, memory-mapping is a very
>powerful tool, and one I am not eager to do without.
>
>-Andy

Andy;

	The current version of HP-UX 8.0 dosn't seem to support memory
mapped files; there is no mmap syscall.  However, in the next six to
nine months, OSF/1 will be available on the 700s.  OSF/1 has a much
more sophisticated set of memory mapping functions than current Sun O/S.

regards,
fletcher



Fletcher Kittredge
Senior Engineer, BBN Software Products
150 CambridgePark Dr,  Cambridge, MA. 02140
617-873-3465  /  fkittred@bbn.com  /  fkittred@das.harvard.edu