Path: utzoo!attcan!uunet!husc6!bloom-beacon!tut.cis.ohio-state.edu!rutgers!bellcore!tness7!tness1!uhnix1!uhnix2!uace0
From: uace0@uhnix2.uh.edu (Michael B. Vederman)
Newsgroups: comp.sys.atari.st
Subject: Re: Allocating long-lived memory blocks
Keywords: Malloc, Gemdos
Message-ID: <686@uhnix2.uh.edu>
Date: 6 Oct 88 15:07:28 GMT
References: <39610@yale-celray.yale.UUCP> <39617@yale-celray.yale.UUCP>
Reply-To: uace0@uhnix2.UUCP
Organization: University of Houston
Lines: 18

You basically have the right idea as described in the second algorithm, ie.
change the _run variable pointer to point to the basepage of the oldest process
which should be the desktop.  This however is a problem if allocated within a
program.  We have just implemented this for SHADOW, and have it working very
well, with some helpful advice from ATARI.

The _run pointer MUST point to a valid basepage, not the desktop's, which we
found to cause trouble.  Of course, the location of _run is not documented
for pre-Mega ROMs, so you will have to hack out the location and hardwire it.

- mike
Double Click Software

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