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From: zap@indic.se (Jonas Petersson)
Newsgroups: comp.sys.amiga.programmer
Subject: ADCMD_ALLOCATE, ADIOF_NOWAIT => IOERR_ALLOCFAILED ?
Summary: No, CapsLock is not jammed.
Keywords: Audio channel allocation, PeekMsg()
Message-ID: <1991Feb16.201228.524@indic.se>
Date: 16 Feb 91 20:12:28 GMT
Organization: Indic Computerised Air Quality Surveillance
Lines: 29

I've just finished an Arexx sound daemon for those without lot's of chipmem
(which might show up here in a while) and during that development I had some 
problems with the Audio device:

No matter what parameters I put in the channel allocation request, the 
program either gets what it wants or hangs around 'til it does. 
ADIOF_NOWAIT, IOF_QUICK, low/illegal values for ln_Pri makes no difference,
I have never got an IOERR_ALLOCFAILED...

The simple solution is ofcourse to allocate no channels as the last 
combination, but I suppose I've missed something. Does someone have an
example that produces an IOERR_ALLOCFAILED?


Second question: Which is the "most civilized" way to check whether a msg
is waiting at a port or not? I currently use:

#define WaitingMsg(port)    (port->mp_MsgList.lh_Head->ln_Type==NT_MESSAGE)

Seems to work fine - any opinions?


Jonas (My program was on Manx release disks, Yahoo! ;-) Petersson
	-- Absolut Software (Hack for fun) & Indic (Hacking for money)
-- 
     ///  "Are you THE Zaphod Beeblebrox ????" # zap@indic.se
__  ///                                        # Air Quality Surveillance
\\\///    "No, just A Zaphod Beeblebrox.       # "I can feel it coming 
 \///  Didn't you hear - I come in sixpacks !" #   in the air..."