From:	Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Pointer and Interrupt
Date:	Sat, 18 Mar 2000 09:20:32 +0200
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Frederic Cazenave wrote:
> 
> If I use a pointer inside an interruot routine, do I need
> to lock something else other than the adresse pointed ?

You need to lock _everything_ that will be accessed during interrupt
processing.  This includes code and data.  So if the pointer is dereferenced
by the handler, you need to lock the data it points to.  If the pointer is
only accessed for pointer arithmetics and such likes, then only the pointer
itself should be locked.

PS: Please don't post in HTML.

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