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From: d88-jwa@nada.kth.se (Reply via mail or intl. +46 8 258 268...)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Integer Size problem
Message-ID: <1465@draken.nada.kth.se>
Date: 23 Aug 89 19:25:45 GMT
References: <15141@dartvax.Dartmouth.EDU> <11689@cit-vax.Caltech.Edu>
Reply-To: d88-jwa@nada.kth.se (Jon W{tte)
Organization: Royal Institute of Technology, Stockholm, Sweden
Lines: 20

In article <11689@cit-vax.Caltech.Edu> palmer@tybalt.caltech.edu.UUCP (David Palmer) writes:
>A better way, clearer and probably faster, however is to just do:
>	**(rect **)myHandle = myRect;
>
>You don't have to lock anything down, it is a single easy to understand

Wrong. Incorrect. What happens if a interrupt happens between the set
pointers and the block move instruction ? And this interrupt happens
to shuffle memory ? LOCK THE HANDLES first ! ALWAYS !

>	**myhandle.boundrect = myRect;
>		/* ^ or whatever the element name is */

Both Inside Mac and the TechNotes tell us no to change any fields in
windows or GrafPorts directly. But since everybody's doing it, they
won't DARE change anything :-)

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