From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Mon, 07 May 2007 11:16:41 +0200
From: Jan Kiszka <jan.kiszka@domain.hid>
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Subject: Re: [Xenomai-core] killing a rt task and closing a rtdm fd
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To: NZG <ngustavson@domain.hid>
Cc: xenomai@xenomai.org

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NZG wrote:
> I've got a user space app that starts a periodic real time task.
> The periodic task opens an rtdm file descriptor and starts writing to i=
t in a=20
> loop.
>=20
> At some point, due to user interaction,  the task needs to be killed an=
d the=20
> file descriptor closed.
>=20
> What's the easiest way to signal it to do so? Anyone have some example =
code=20
> they can point at?
>=20
> I looked through the native docs and the examples at
> http://www.captain.at/xenomai.php
> and
> http://svn.gna.org/svn/xenomai/trunk/examples/rtdm/driver-api/
>=20
> but they don't appear to address this.
>=20
> The captains example uses a global variable, but this doesn't actually =
seem to=20
> work.
>=20
> I suspect the task is operating on a copied set of variables, so some s=
ort of=20
> message passing is going to be involved, but I don't want to slow down =
the=20
> main task to wait for a message.
>=20

Check examples under src/utils/can, src/testsuite/switchtest, or
irqbench. [And please post help requests on xenomai-help :)]

Jan


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