Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!samsung!usc!apple!portal!atari!apratt
From: apratt@atari.UUCP (Allan Pratt)
Newsgroups: comp.sys.atari.st.tech
Subject: Re: Cookie Jar
Message-ID: <2713@atari.UUCP>
Date: 18 Oct 90 20:13:53 GMT
References: <15403@hydra.gatech.EDU>
Organization: Atari Corp., Sunnyvale CA
Lines: 23

gt1448b@prism.gatech.EDU (David P. Forrai) writes:
>In article <7204.27062454@uwovax.uwo.ca> 7103_2622@uwovax.uwo.ca
>(Eric Smith) writes:
>>The ID part of the
>>last cookie is always a zero longword, and its data part gives
>>you the size of the current cookie jar in units of cookies (8 bytes).

>So what is the value/data part of the last cookie "officially" supposed
>to be, the number of cookie slots remaining or the size of the cookie
>jar in cookies?

I think it was perfectly obvious from Eric Smith's posting: the "value"
part of the zero cookie contains the size of the cookie jar, in cookies.
Multiply by 8 for the size of the cookie jar in bytes.  This is regardless
of how many slots are actually USED.  To install a cookie into a 
cookie jar which has one or more slots available, you move the zero cookie
down one, and put your new cookie in just before it.  You don't change
the value of the zero cookie, because you didn't change the size of
the cookie jar.

============================================
Opinions expressed above do not necessarily	-- Allan Pratt, Atari Corp.
reflect those of Atari Corp. or anyone else.	  ...ames!atari!apratt