Path: utzoo!attcan!uunet!husc6!mailrus!purdue!decwrl!labrea!Portia!maverick
From: maverick@Portia.Stanford.EDU (Steve Whitney)
Newsgroups: comp.sys.atari.st
Subject: Reentrant system calls
Keywords: possibly stupid question / multitasking TOS
Message-ID: <4186@Portia.Stanford.EDU>
Date: 21 Nov 88 23:43:34 GMT
Distribution: na
Organization: Stanford University
Lines: 23

I have read that GEM system calls are not reentrant so they can't be
called from interrupts and no one can kludge up a multitasking GEM
a la MT C Shell without practically rewriting them.  What I'd like
to know is 

1) Is this true?

2) Would it be possible to rewrite them as reentrant (of course, you'd
   have to semaphore the BLiTTER since it isn't reentrant)?

3) Would it be possible to write a scheduler of some sort to sit at
   the TRAP #2 vector and figure out which process to run with some
   kind of Juggler like interface to switch the menu bars?

Just food for thought.

					--Steve

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