From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: ニャン星人 <1173264124@qq.com>
Cc: xenomai <xenomai@xenomai.org>
Subject: Re: [Xenomai] 回复： Question about synchronisation between xenomai taskand linux task
Date: Tue, 15 Dec 2015 07:21:35 +0100 [thread overview]
Message-ID: <20151215062135.GJ16627@hermes.click-hack.org> (raw)
In-Reply-To: <tencent_1F2D495201DDAD5A77A043F3@qq.com>
On Tue, Dec 15, 2015 at 11:42:44AM +0800, ニャン星人 wrote:
> So you mean there is not simple and complete solution way apply by
> xenomai to figure out the synchronization problem between xenomai
> thread and linux thread? When I meet synchronization problem
> between xenomai thread and linux thread, do I have to handle it
> like xddp and pipe?
The solution which strictly does what you want is xddp. (rt_pipe is
deprecated, and linux pipes will cause both ends to switch to
secondary mode).
But you may consider using a Xenomai only synchronization primitive
(such as semaphores, message queues, etc...), and have the non
real-time thread be a Xenomai thread oscillating between primary and
secondary mode. Using the SCHED_OTHER or SCHED_WEAK policy for such
a thread should help.
--
Gilles.
https://click-hack.org
prev parent reply other threads:[~2015-12-15 6:21 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-14 14:56 [Xenomai] Question about synchronisation between xenomai task and linux task =?gb18030?B?pcul46Xz0MfIyw==?=
2015-12-14 22:35 ` Gilles Chanteperdrix
2015-12-15 3:42 ` [Xenomai] =?gb18030?q?=BB=D8=B8=B4=A3=BA__Question_about_synchronisation_between_xenomai_taskand_linux_task?= =?gb18030?B?pcul46Xz0MfIyw==?=
2015-12-15 6:21 ` Gilles Chanteperdrix [this message]
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