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From: Richard Weinberger <richard.weinberger@gmail.com>
Date: Tue, 14 Apr 2020 12:56:00 +0200
Message-ID: <CAFLxGvyhPEskS+QfD4QUQXYLRDvYN2QZXma73AMrwF3+0-roqQ@mail.gmail.com>
Subject: Re: rt_task_unblock() POSIX alternative
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To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: =?UTF-8?Q?Petr_=C4=8Cervenka?= <grugh@centrum.cz>, Xenomai <xenomai@xenomai.org>

On Tue, Apr 14, 2020 at 12:44 PM Jan Kiszka <jan.kiszka@siemens.com> wrote:

> > While we are here, is there a guarantee that rt_task_unblock() can unblock
> > a thread in every situation?
> > I have a large Xenomai 2 application on my desk which seems to assumes that.
>
> IIRC, it does so for the native/alchemy API.
>
> >
> > As far as I understand it, unblocking tasks is best effort.
> > /me has pthread_mutex_lock() in mind which must not return -EINTR as
> > required by POSIX.
> >
>
> Well, when mixing APIs, you can end up in such conflicting goals, indeed.

I fear more about Xenomai internals which are now based on POSIX APIs.
IIRC we talked regarding this issue some time ago.

Found the mail:
https://www.xenomai.org/pipermail/xenomai/2019-July/041221.html

-- 
Thanks,
//richard