Path: utzoo!attcan!uunet!wuarchive!usc!apple!oliveb!amiga!kodiak
From: kodiak@amiga.UUCP (Robert R. Burns)
Newsgroups: comp.sys.amiga.tech
Subject: Re: Aborting TimerReq (answer and a question)
Keywords: timer.device AbortIO() WaitIO() Wait()
Message-ID: <4917@amiga.UUCP>
Date: 26 Nov 89 00:33:37 GMT
References: <4499@blake.acs.washington.edu> <4883@amiga.UUCP> <5509@cps3xx.UUCP>
Reply-To: kodiak@batgirl.UUCP (Robert R. Burns)
Organization: Commodore-Amiga Inc, Los Gatos CA
Lines: 26

In article <5509@cps3xx.UUCP> porkka@frith.UUCP (Joe Porkka) writes:
)A related question: In general (any specifics please) is the following
)sequence of calls valid:
)	
)	p = CreateExtIO(myport, sizeof(*p));
)	OpenDevice(device.name , 0, p, flags);
)
)	/* Note that there are *no* SendIO(p) or DoIO(p) calls here */
)	AbortIO(p)
)	WaitIO(p);
)
)	/* Finish clean up here */
)
)The only thing that I think may have problems is the WaitIO(p) call.
)Would it?

This example is not valid.  CreateExtIO/OpenDevice does not guarantee
that the message type is ever set to NT_REPLYMSG, so WaitIO will
actually Wait -- you'll never get to your cleanup code.

- Kodiak
-- 
Bob Burns, amiga!kodiak						 _
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