Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!apple!jkc
From: jkc@Apple.COM (John Kevin Calhoun)
Newsgroups: comp.sys.mac.hypercard
Subject: Re: XCMDs and heap space
Message-ID: <53874@apple.Apple.COM>
Date: 11 Jun 91 18:37:25 GMT
References: <1991Jun11.104716*Arne.Venstad@delab.sintef.no>
Organization: Apple Computer Inc., Cupertino, CA
Lines: 12


In article <1991Jun11.104716*Arne.Venstad@delab.sintef.no>
Arne.Venstad@delab.sintef.no writes:
>A simple question: Are the code resources (XCMD/XFCN) of a stack copied into
>the heap on opening the stack (i.e. before any XCMD/XFCN are called)?

No.  Externals are copied into the heap only when they're invoked for
execution.  In 2.x, they remain there until purged by the Memory Manager
or the Resource Manager.

Kevin Calhoun
jkc@apple.com