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Date: Sun, 18 Feb 2007 19:31:02 +0100
From: Jan Kiszka <jan.kiszka@domain.hid>
MIME-Version: 1.0
Subject: Re: [Xenomai-core] Re: RT-CAN tx_sem
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Jan Kiszka wrote:
> I thought about this issue again and found the reason for my vague bad
> feeling: re-init is not atomic, thus racy. But also the test+sem_init
> pattern I suggested is not save.
>=20
> I guess we need to enhance rtdm_XXX_init in this regard to make the
> RT-CAN use case an officially allowed one. /me is planning to spend mor=
e
> thoughts on this the next days.

OK, done, rtdm_{event,sem,mutex}_init are now protected by the nklock in
trunk. This should make the in-place re-initialisation of RTDM IPC
objects race-free and allow to use them in RT-CAN as originally
intended. I think I will back-port that pieces also to v2.3.x later.

What patch should now go in to avoid double init/destroy and fix rtcan_vi=
rt?

Jan


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