Path: utzoo!attcan!uunet!unisoft!hoptoad!farcomp!murat
From: murat@farcomp.UUCP (Murat Konar)
Newsgroups: comp.sys.mac.programmer
Subject: Re: cdev - INIT Data Exchange
Keywords: cdev, INIT
Message-ID: <206@farcomp.UUCP>
Date: 7 Jun 90 02:26:13 GMT
References: <2695@cooper.cooper.EDU> <55045@microsoft.UUCP> <1990Jun5.142604.11826@asterix.drev.dnd.ca>
Reply-To: murat@farcomp.UUCP (Murat Konar)
Organization: Farallon Computing Inc. Berkeley, CA
Lines: 31

In article <1990Jun5.142604.11826@asterix.drev.dnd.ca> louis@asterix.drev.dnd.ca (Louis Demers) writes:
>t-alexc@microsoft.UUCP (Alex CHAFFEE) writes:
>
>>My favorite way is to have the INIT write a resource of type 'ADDR'
>>into the preferences file (which should be buried safe in the system
>>folder).  The contents of this resource is just a longword pointing
>>to the location of the shared data -- it can be a handle, or a 
>>pointer, or the proper value of A4.  This is done once at startup, 
[...]
>    What happens if you disable the init and it is not loaded.  Your
>    resource is still there pointing to some area it has no right to
>    claim. Upon shutdown, Do you remove this resource ? what happens
[...]

I embed a 4 character string (OSType) into my patch code at a known offset
from its address and check for it before writing there.  Works really well.

f
o
d
d
e
r



-- 
____________________________________________________________________
Have a day. :^|             
Murat N. Konar	
murat@farcomp.UUCP             -or-          farcomp!murat@apple.com