Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!apple!netcom!chrisj
From: chrisj@netcom.UUCP (Christopher T. Jewell)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Non-Blocking io (stdin & MacTCP)
Summary: KillIO or PBKillIO cancels an async device request
Keywords: async asynchronous KillIO PBKillIO
Message-ID: <16205@netcom.UUCP>
Date: 4 Nov 90 22:30:34 GMT
References: <520@mermaid.Litle.Com> <1990Nov2.194118.29698@hellgate.utah.edu>
Organization: Netcom- The Bay Area's Public Access Unix System {408 241-9760 guest}
Lines: 14

In article <1990Nov2.194118.29698@hellgate.utah.edu> u-lchoqu%peruvian.utah.edu@cs.utah.edu (Lee Choquette) writes:
>On the Mac
>you have a pending I/O request, and I can't find in Inside Mac a safe
>way to cancel that request.  Does anyone out there know how to cancel
>an asynchronous File Manager request?  What happens if your
>application quits before the request completes?

On the Mac, asynchronous requests really only make sense with devices,
not with files.  The high-level call KillIO (IM II-179) or the low-level
call PBKillIO (II-187) will cancel all outstanding asynchronous requests
to the specified device driver.
-- 
Chris   (Christopher T. Jewell)   chrisj@netcom.uucp   apple!netcom!chrisj
	at work: chrisj@lucid.com  (I speak only for me, of course.)