From: Philippe Gerum <rpm@xenomai.org>
To: Steven Seeger <steve@domain.hid>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>,
Jan Kiszka <jan.kiszka@domain.hid>
Subject: Re: [Xenomai-help] resume/suspend periodic timing issue
Date: Tue, 28 Feb 2006 17:37:17 +0100 [thread overview]
Message-ID: <44047C3D.40104@domain.hid> (raw)
In-Reply-To: <C029BA24.258F%steve@domain.hid>
Steven Seeger wrote:
> If time stopped for you, would you be aware of anything?
>
The global timeline the whole RTOS is working on does not stop for suspended
threads, this is what you seem to be missing since the very beginning of this
discussion. For instance, forcibly suspending a task (e.g. using rt_task_suspend)
while it is already undergoing a blocked state with a timeout (e.g. pending on
some sempahore to become available, whatever) does not prevent the timeout to be
decremented tick after tick. This is called cumulative suspension states, and all
the RTOS I know of enforce that. Fortunately.
> On 2/28/06 8:20 AM, "Philippe Gerum" <rpm@xenomai.org> wrote:
>
>
>>Precisely not, it should be aware that time keeps advancing regardless of its
>>own
>>status, suspended or not.
>
>
>
--
Philippe.
next prev parent reply other threads:[~2006-02-28 16:37 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-27 14:20 [Xenomai-help] resume/suspend periodic timing issue Steven Seeger
2006-02-27 18:39 ` Gilles Chanteperdrix
2006-02-28 13:45 ` Steven Seeger
2006-02-28 13:55 ` Gilles Chanteperdrix
2006-02-28 14:07 ` Steven Seeger
2006-02-28 14:21 ` Jan Kiszka
2006-02-28 14:24 ` Steven Seeger
2006-02-28 15:10 ` Philippe Gerum
2006-02-28 15:13 ` Steven Seeger
2006-02-28 15:27 ` Jan Kiszka
2006-02-28 15:29 ` Steven Seeger
2006-02-28 15:43 ` Jan Kiszka
2006-02-28 15:46 ` Steven Seeger
2006-02-28 16:01 ` Jan Kiszka
2006-02-28 16:27 ` Steven Seeger
2006-02-28 15:29 ` Philippe Gerum
2006-02-28 15:31 ` Steven Seeger
2006-02-28 16:20 ` Philippe Gerum
2006-02-28 16:28 ` Steven Seeger
2006-02-28 16:37 ` Philippe Gerum [this message]
2006-02-28 17:24 ` Steven Seeger
2006-02-28 17:53 ` [Xenomai-core] rt_task_wait_period() and overruns Philippe Gerum
2006-02-28 18:02 ` [Xenomai-core] Re: [Xenomai-help] " Philippe Gerum
2006-02-28 18:15 ` Steven Seeger
2006-03-01 10:22 ` Philippe Gerum
2006-03-01 15:25 ` Dmitry Adamushko
2006-03-01 16:00 ` Philippe Gerum
2006-03-01 19:01 ` Dmitry Adamushko
2006-03-03 11:29 ` Philippe Gerum
2006-02-28 13:57 ` [Xenomai-help] resume/suspend periodic timing issue Philippe Gerum
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