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From: keith@Apple.COM (Keith Rollin)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Exit To Application/Memory Movement at Interrupt time...
Message-ID: <36462@apple.Apple.COM>
Date: 14 Nov 89 16:16:47 GMT
References: <60384@tiger.oxy.edu>
Distribution: usa
Organization: Apple Computer Inc, Cupertino, CA
Lines: 17

In article <60384@tiger.oxy.edu> sonenbli@oxy.edu (Andrew D. Sonenblick) writes:

>Also, why is it "illegal" to move memory at interrupt time?

What if you interrupt the Memory Manager while it was moving memory or compact-
ing the heap. You would try to re-enter it while in an inconsistant state. The
alternative to this would be to turn off interrupts while the Memory Manager
was in this state, but that would mean that interrupts would be turned off a
LOT.


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"Argue for your Apple, and sure enough, it's yours" - Keith Rollin, Contusions