From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Fillod Stephane <stephane.fillod@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] Problem with Message queue
Date: Mon, 14 May 2007 21:16:28 +0200 [thread overview]
Message-ID: <17992.46476.24771.264671@domain.hid> (raw)
In-Reply-To: <0B45E93C5FF65740AEAE690BF3848B7A4AB0C9@domain.hid>
Fillod Stephane wrote:
> Perrine Martignoni wrote:
> [..]
> >int DESTRUCT=0;
>
> I'm always nervous to see global variables shared among threads without
> a volatile keyword. An explicit memory barrier would be better, as it
> has been re-explained in a LWN article lately (wait Thursday for free access)
> http://lwn.net/Articles/233479/
Besides, this termination mechanism results on a deadlock on SMP. Please
kill this DESTRUCT variable and replace cleanup_upon_sig with:
void cleanup_upon_sig(int sig __attribute__((unused)))
{
pthread_cancel(task1);
pthread_cancel(task2);
}
--
Gilles Chanteperdrix.
next prev parent reply other threads:[~2007-05-14 19:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-14 12:11 [Xenomai-help] Problem with Message queue Fillod Stephane
2007-05-14 13:36 ` Gilles Chanteperdrix
2007-05-14 19:16 ` Gilles Chanteperdrix [this message]
2007-05-15 8:00 ` Perrine Martignoni
-- strict thread matches above, loose matches on Subject: below --
2007-05-14 9:21 Perrine Martignoni
2007-05-14 9:51 ` Gilles Chanteperdrix
2007-05-14 11:04 ` Gilles Chanteperdrix
2007-05-14 11:57 ` Gilles Chanteperdrix
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