From: Takashi Iwai <tiwai@suse.de>
To: Abramo Bagnara <abramo.bagnara@libero.it>
Cc: Anders Torger <torger@ludd.luth.se>,
alsa-devel@lists.sourceforge.net,
Clemens Ladisch <clemens@ladisch.de>
Subject: Re: Why do I get broken pipe on write to a pcm in statePREPARED?
Date: Tue, 08 Oct 2002 11:54:17 +0200 [thread overview]
Message-ID: <s5hsmzh2r3q.wl@alsa2.suse.de> (raw)
In-Reply-To: <3DA1C884.C8283CE6@libero.it>
At Mon, 07 Oct 2002 19:46:44 +0200,
Abramo Bagnara wrote:
> > > > but the current behavior is incorrect from the interpretation of
> > > > POSIX. so this must be a bug.
> > > > if we have to change it, then i would choose the new one, because
> > > > it's more intuitive without exception.
> > >
> > > As pointed by Clemens the current is the proper POSIX behaviour.
> >
>
> Perhaps you should reread Single Unix Specification, I quote
> http://www.opengroup.org/onlinepubs/007904975/functions/poll.html
>
> POLLIN
> Data other than high-priority data may be read without
> blocking.
>
>
> POLLOUT
> Normal data may be written without blocking.
>
>
> No data may be read/written in current stream state in the case we are
> discussing.
these flags are the conditions how read/write behaves when poll()
returns. no problem that poll() itself is blocked in the prepare
state because it does NOT return until the pcm is ready.
Takashi
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next prev parent reply other threads:[~2002-10-08 9:54 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.33.0209112103010.607-100000@pnote.perex-int.cz>
2002-09-11 19:26 ` Why do I get broken pipe on write to a pcm in state PREPARED? Anders Torger
2002-09-11 20:14 ` Paul Davis
2002-09-12 11:13 ` Takashi Iwai
2002-09-12 11:48 ` Anders Torger
2002-09-12 15:56 ` Takashi Iwai
2002-09-12 16:14 ` Anders Torger
2002-09-12 20:02 ` Tim Goetze
2002-09-13 9:41 ` Jaroslav Kysela
2002-09-13 10:43 ` Takashi Iwai
2002-09-13 11:45 ` Tim Goetze
2002-09-13 12:37 ` Takashi Iwai
2002-09-15 17:56 ` Why do I get broken pipe on write to a pcm in statePREPARED? Abramo Bagnara
2002-09-16 10:46 ` Takashi Iwai
2002-09-16 13:18 ` Tim Goetze
2002-09-16 14:31 ` Takashi Iwai
2002-09-16 19:31 ` Abramo Bagnara
2002-09-16 19:49 ` Tim Goetze
2002-09-16 20:14 ` Anders Torger
2002-09-17 8:12 ` Abramo Bagnara
2002-09-17 9:03 ` Anders Torger
2002-09-17 13:04 ` Paul Davis
2002-09-17 9:05 ` Clemens Ladisch
2002-09-17 10:09 ` Anders Torger
2002-09-17 11:09 ` Takashi Iwai
2002-09-17 11:55 ` tomasz motylewski
2002-09-17 12:52 ` Takashi Iwai
2002-09-17 13:01 ` Anders Torger
2002-09-17 14:40 ` Clemens Ladisch
2002-09-18 19:57 ` Anders Torger
2002-10-04 8:14 ` Anders Torger
2002-10-04 12:58 ` Takashi Iwai
2002-10-04 18:04 ` Abramo Bagnara
2002-10-07 10:15 ` Takashi Iwai
2002-10-07 12:07 ` Abramo Bagnara
2002-10-07 13:19 ` Anders Torger
2002-10-07 17:46 ` Abramo Bagnara
2002-10-08 9:54 ` Takashi Iwai [this message]
2002-10-07 13:57 ` Tim Goetze
2002-10-09 18:13 ` Jack O'Quin
2002-09-17 13:03 ` Paul Davis
2002-10-15 15:49 ` multiple devices/ possible bug in aplay or somewhere else? Guilhem Tardy
2002-10-15 16:14 ` Jaroslav Kysela
2002-10-15 17:05 ` Guilhem Tardy
[not found] <3D8638F6.AC6DE0C2@racine.ra.it>
2002-09-16 22:04 ` Why do I get broken pipe on write to a pcm in statePREPARED? Tim Goetze
2002-09-17 8:21 ` Abramo Bagnara
2002-09-17 9:21 ` Tim Goetze
[not found] <200209171301.g8HD1Ww01231@mother.ludd.luth.se>
2002-09-17 13:04 ` Anders Torger
[not found] <3D98769A000FAA05@ims5a.libero.it>
2002-10-05 7:45 ` Abramo Bagnara
[not found] <3D98769A00183382@ims5a.libero.it>
2002-10-08 6:06 ` Abramo Bagnara
2002-10-08 7:30 ` Clemens Ladisch
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