From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: "Jens Köhler" <jenskxxx@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] rt_queue_read and EPERM?
Date: Mon, 13 Sep 2010 11:07:26 +0200 [thread overview]
Message-ID: <4C8DE9CE.9050900@domain.hid> (raw)
In-Reply-To: <AANLkTi=Wke_BOMmq4P-SSoaMnaDVfBV=2Hmn5TZF7QgQ@mail.gmail.com>
Jens Köhler wrote:
> Hello
>
> I am try to use a RT_QUEUE. I am writing messages with rt_queue_write to
> the queue. But when function rt_queue_read is called result is always "-1".
>
> "-1" means EPERM. What means exactly: "EEPERM is returned if this
> service should block"? I don't understand why a function should block to
> get a message from a queue!?
A piece of code is worth a thousand words. Please send us a piece of
code showing the behaviour you find suspicious.
--
Gilles.
next prev parent reply other threads:[~2010-09-13 9:07 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-13 8:06 [Xenomai-help] rt_queue_read and EPERM? Jens Köhler
2010-09-13 9:07 ` Gilles Chanteperdrix [this message]
2010-09-13 10:59 ` Jens Köhler
2010-09-13 11:57 ` Gilles Chanteperdrix
2010-09-13 13:52 ` Jens Köhler
2010-09-13 14:15 ` Gilles Chanteperdrix
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