Article View: comp.sys.amiga.tech
Article #3041Re: CurrentDir
From: Chuck McManis
Date: Thu, 22 Mar 1990 23:23
Date: Thu, 22 Mar 1990 23:23
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1650 bytes
An amendment to the rule of "Don't unlock locks you don't own" is
required.
The problem that most people run into with CurrentDir() and locks
is that *Workbench* Caches the current directory lock and then
Unlocks it when your application exits. If you change directories
by exchanging locks with CurrentDir and Unlock the one you got
back, when Workbench goes to Unlock it you will be hosed. So
the Amended rule is :
Don't Unlock locks you don't own. If you swap locks with
CurrentDir then the lock you gave away is no longer yours
but the lock you got is so you can unlock it. However, if
you are started from workbench, preserve the original
current directory lock and return it before returning to
workbench. (At least until they fix the bug in Workbench)
--Chuck McManis
uucp: {anywhere}!sun!cmcmanis BIX: <none> Internet: cmcmanis@Eng.Sun.COM
These opinions are my own and no one elses, but you knew that didn't you.
"If it didn't have bones in it, it wouldn't be crunchy now would it?!"
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!clyde.concordia.ca!uunet!tut.cis.ohio-state.edu!zaphod.mps.ohio-state.edu!brutus.cs.uiuc.edu!apple!sun-barr!newstop!sun!stpeter!cmcmanis From: cmcmanis@stpeter.Sun.COM (Chuck McManis) Newsgroups: comp.sys.amiga.tech Subject: Re: CurrentDir Message-ID: <133343@sun.Eng.Sun.COM> Date: 22 Mar 90 23:23:30 GMT References: <00173.AA00173@starsoft.UUCP> <133060@sun.Eng.Sun.COM> <1332@quintus.UUCP> <1990Mar21.082549.9252@santra.uucp> Sender: news@sun.Eng.Sun.COM Reply-To: cmcmanis@sun.UUCP (Chuck McManis) Organization: Sun Microsystems, Mountain View Lines: 22