Re: Performer: Using very large databases

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david pratt (pratt++at++bessie.cs.nps.navy.mil)
Wed, 20 Oct 93 07:51:17 -0700

>Is it possible for a separate process to create a shared memory arena,
>malloc and create data arrays into that memory, then have the
>app/cull/draw processes of my Performer application access tha data in
>those arrays without copying the data? The first process would be
>created and running before the Performer app starts.

We tried this problem of inter-process arenas here a while back. The problem
that we ran into was that unless we had two programs the same size (code and
data) or created a very large dummy arena in the smaller one, we would get
a message saying the address was in use. It is possible to do it. Take
a look at "usgetinfo" and "usputinfo" man pages.

Dave

Dave Pratt pratt++at++cs.nps.navy.mil (408) 656-2865
Department of Computer Science, Naval Postgraduate School, Monterey, CA 93943
These are my opinions, talk to the PAO for the Navy's.

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