From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Philippe Gerum <rpm@xenomai.org>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] Exception handlers in primary domain / user-space signals
Date: Tue, 08 Feb 2011 13:31:44 +0100 [thread overview]
Message-ID: <4D5137B0.8050006@domain.hid> (raw)
In-Reply-To: <1297167750.2023.13.camel@domain.hid>
Philippe Gerum wrote:
> On Tue, 2011-02-08 at 13:16 +0100, Gilles Chanteperdrix wrote:
>> I was not talking about the Xenomai case specifically, but since Henri
>> would like to have the full signals implementation with Xenomai, this
>> does a apply to Xenomai too.
>>
>>
>
> I think we all agree that having a complete signal implementation for
> Xenomai in pure rt mode won't happen overnight. So the point is now: how
> could it be mimicked, at least for the most useful part.
>
My point is that whatever you do, a switch user-kernel, then kernel-user
is not going to be lightweight, so avoiding it in the application in the
first place may be a better idea.
My aim with implementing complete signals was rather for things like
timer_* and mq_notify, where the interface requires them, I did not even
imagine implementing SIGFPE, SIGILL, SIGTRAP, which I thought could not
be time critical anyway, for the reasons explained earlier. So, my
question (rather to Henri) is: what would we need SIGFPE, SIGILL,
SIGTRAP in an real-time application for?
--
Gilles.
next prev parent reply other threads:[~2011-02-08 12:31 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-07 17:35 [Xenomai-help] Exception handlers in primary domain / user-space signals Henri Roosen
2011-02-07 18:27 ` Gilles Chanteperdrix
2011-02-07 19:02 ` Henri Roosen
2011-02-07 19:08 ` Gilles Chanteperdrix
2011-02-08 8:21 ` Henri Roosen
2011-02-08 8:38 ` Philippe Gerum
2011-02-08 9:10 ` Henri Roosen
2011-02-08 9:15 ` Philippe Gerum
2011-02-08 12:09 ` Gilles Chanteperdrix
2011-02-08 12:12 ` Philippe Gerum
2011-02-08 12:16 ` Gilles Chanteperdrix
2011-02-08 12:22 ` Philippe Gerum
2011-02-08 12:31 ` Gilles Chanteperdrix [this message]
2011-02-08 12:51 ` Henri Roosen
2011-02-08 12:56 ` Philippe Gerum
2011-02-08 13:11 ` Gilles Chanteperdrix
2011-02-08 13:25 ` Philippe Gerum
2011-02-11 9:44 ` Henri Roosen
2011-04-15 12:58 ` Henri Roosen
2011-04-15 13:33 ` Gilles Chanteperdrix
2011-04-19 16:30 ` [Xenomai-help] Xenomai rt_printf() don't print davide doninelli
2011-04-19 17:13 ` Gilles Chanteperdrix
2011-04-19 17:39 ` davide doninelli
2011-04-19 17:43 ` Gilles Chanteperdrix
2011-05-04 6:24 ` davide doninelli
2011-05-19 8:35 ` [Xenomai-help] Exception handlers in primary domain / user-space signals Henri Roosen
2011-02-08 12:53 ` Philippe Gerum
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