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From: ewhac@well.UUCP
Newsgroups: net.micro.amiga
Subject: Re: Q on AbortIO()
Message-ID: <1174@well.UUCP>
Date: Thu, 29-May-86 04:51:03 EDT
Article-I.D.: well.1174
Posted: Thu May 29 04:51:03 1986
Date-Received: Sat, 31-May-86 04:45:44 EDT
References: <8605232153.AA01439@pavepaws> <297@cbmvax.cbmvax.cbm.UUCP>
Reply-To: ewhac@well.UUCP (Leo 'Bols Ewhac' Schwab)
Organization: Whole Earth Lectronic Link, Sausalito CA
Lines: 43
Keywords: WaitIO()
Summary: Are you *ABSOLUTELY* sure??

-- REPLACE THIS LINE WITH ANOTHER EXACLY LIKE IT --
In article <297@cbmvax.cbmvax.cbm.UUCP> randy@cbmvax.UUCP (Randy Weiner) writes:
>In article <8605232153.AA01439@pavepaws> dillon@PAVEPAWS.BERKELEY.EDU.UUCP writes:
>>	Ok, AbortIO() Fails when the request has already completed.  My
>>question is, when I call AbortIO() and it fails, will it still remove the
>>request from the reply port? or do I still have to WaitIO() ??????
>>
>	AbortIO only removes the request from the device queue, not
>from the reply queue. A reply is posted as if the IO had completed.
>The FLAG field is set to indicate an error (non-zero) and the IO_ERROR
>field has the IOERR_ABORTED bit set.
>
>	In this case, since the request has already completed, the 
>AbortIO fails and the flag field is 0. You should receive your reply
>in the expected fashion, meaning WaitIO should catch the almost
>aborted but completed request. You must still remove the reply
>(GetMsg(xxx)) yourself as WaitIO never removes a reply.
			   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> [ ... ]

	WHAT??!!  Are you *ABSOLUTELY* sure about this one?  I distinctly
remember reading in the RKM that WaitIO() does use the reply port:

-------- Excerpt from Rom Kernel Manual, version >> 1.0 <<, p. 6-6

	WaitIO, as with DoIO, also internally uses the ReplyPort.  If you
use WaitIO, it will not be necessary to use GetMsg after your task awakens.

--------

	Yes, I still have my 1.0 manual; it has some things in it (believe
it or not) that don't appear in the 1.1 manual, such as the above
clarification on how I/O works.

	Please, Commodore.  Try to be correct.  It *IS* your machine, after
all.  If I'm wrong, feel free to flame me.

_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
Leo L. Schwab				ihnp4!ptsfa!well!ewhac
						..or..
I don't work for anybody,		well ---\
so I don't need disclaimers!		dual ----> !unicom!ewhac
					hplabs -/       ("AE-wack")