Re: Vertical Retrace

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From: info-mac@uw-beaver (info-mac)
Newsgroups: fa.info-mac
Subject: Re: Vertical Retrace
Message-ID:
Date: Mon, 27-Aug-84 01:11:43 EDT
Article-I.D.: uw-beaver>.1518
Posted: Mon Aug 27 01:11:43 1984
Date-Received: Wed, 22-Aug-84 00:36:04 EDT
Sender: daemon@uw-beave
Organization: U of Washington Computer Science
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From: [email protected] (Dan Winkler)
The Memory Manager should not be called during vertical retrace tasks
because it could trigger a heap compaction. Imagine what that would
mean for an application which had just done the first step of
dereferencing a handle and, before following the pointer to the
actual data, was interrupted by a vertical retrace job which caused
a heap compaction and invalidated the pointer.