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Date: Tue, 26 Jun 2007 17:39:25 +0200
From: Jan Kiszka <jan.kiszka@domain.hid>
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Subject: Re: [Xenomai-help] accessing context switch counter from rttask
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To: Gsellmann Peter <Peter.Gsellmann@domain.hid>
Cc: xenomai@xenomai.org

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Gsellmann Peter wrote:
> Hi!
>=20
> I searched for a while and found this snippet
>=20
> RT_TASK *rt =3D rt_task_self();
> int x =3D rt->thread_base.stat.csw;
>=20
> should give the number of context switches, but:
> RT_TASK in non-kernel mode is only RT_TASK_PLACEHOLDER so i have no
> access to thread_base!
>=20
> Is there an official way to get this info (w/o opening
> "/proc/xenomai/...")?
>=20

Not yet. You could extend RT_TASK_INFO with this statistic (obtained via
rt_task_inquire). There is currently work in progress to add accumulated
execution times to the same interface, so this extension would fit quite
well. Patches always welcome.

Jan


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