From: Philippe Gerum <rpm@xenomai.org>
To: Frederik Bayart <frederik_bayart@yahoo.co.uk>,
"xenomai@xenomai.org" <xenomai@xenomai.org>
Subject: Re: [Xenomai] how to check RT_MUTEX_INFO.owner
Date: Mon, 14 Sep 2015 14:12:15 +0200 [thread overview]
Message-ID: <55F6B99F.1090707@xenomai.org> (raw)
In-Reply-To: <1252191047.2961926.1442232205723.JavaMail.yahoo@mail.yahoo.com>
On 09/14/2015 02:03 PM, Frederik Bayart wrote:
> In the documentation of RT_MUTEX_INFO is described :
> RT_TASK owner : Current mutex owner, or null if unlocked.
>
> But this is not a pointer, so it can't be compared with NULL. Should you check RT_TASK.handle ?
>
You should compare the handle to NO_ALCHEMY_TASK, i.e.:
include/alchemy/task.h:#define NO_ALCHEMY_TASK ((RT_TASK){ 0, 0 })
--
Philippe.
prev parent reply other threads:[~2015-09-14 12:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-14 12:03 [Xenomai] how to check RT_MUTEX_INFO.owner Frederik Bayart
2015-09-14 12:12 ` Philippe Gerum [this message]
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