From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Jan Kiszka <jan.kiszka@domain.hid>
Cc: xenomai-core <xenomai@xenomai.org>
Subject: Re: [Xenomai-core] [PATCH] POSIX: Fix race when setting claimed bit
Date: Tue, 02 Sep 2008 17:35:02 +0200 [thread overview]
Message-ID: <48BD5D26.4010807@domain.hid> (raw)
In-Reply-To: <48BD5BC3.4040903@domain.hid>
Jan Kiszka wrote:
> OTOH, we can safe some text size which is precious as well. So I'm
> convinced to go your way (with a modification):
My approach sucks: we get a silly atomic_cmpxchg if the mutex is already
claimed, which is as least as much a common case as a currently
unclaimed mutex. Need to think a bit. But I think a good solution is to
re-read only if the mutex has been seen as already claimed.
--
Gilles.
next prev parent reply other threads:[~2008-09-02 15:35 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-02 13:33 [Xenomai-core] [PATCH] POSIX: Fix race when setting claimed bit Jan Kiszka
2008-09-02 13:36 ` Gilles Chanteperdrix
2008-09-02 13:52 ` Jan Kiszka
2008-09-02 13:53 ` Gilles Chanteperdrix
2008-09-02 14:25 ` Jan Kiszka
2008-09-02 14:45 ` Gilles Chanteperdrix
2008-09-02 14:53 ` Gilles Chanteperdrix
2008-09-02 15:00 ` Jan Kiszka
2008-09-02 15:29 ` Jan Kiszka
2008-09-02 15:35 ` Gilles Chanteperdrix [this message]
2008-09-02 15:43 ` Jan Kiszka
2008-09-02 17:59 ` Gilles Chanteperdrix
2008-09-02 18:14 ` Jan Kiszka
2008-09-02 18:26 ` Gilles Chanteperdrix
2008-09-03 7:17 ` Jan Kiszka
2008-09-03 8:59 ` Gilles Chanteperdrix
2008-09-05 8:31 ` [Xenomai-core] [PATCH] POSIX: Fix race when setting claimed bit - v2 Jan Kiszka
2008-09-06 17:46 ` Gilles Chanteperdrix
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