From: Ulrich Drepper <drepper@redhat.com>
To: "Peter �" <pwaechtler@mac.com>
Cc: linux-kernel@vger.kernel.org, akpm@osdl.org, torvalds@osdl.org,
bo.z.li@intel.com, manfred@colorfullife.com
Subject: Re: [PATCH] [2/2] posix message queues
Date: Fri, 03 Oct 2003 23:39:12 -0700 [thread overview]
Message-ID: <3F7E6B10.2000503@redhat.com> (raw)
In-Reply-To: <1065196646.3682.54.camel@picklock.adams.family>
Peter Wächtler wrote:
> + if (q->notify.sigev_notify == SIGEV_THREAD) {
> +
> + err = -ENOSYS;
> + pr_info("mq_*send: SIGEV_THREAD not supported\n");
> + }
In all the SIGEV_THREAD cases I suggest that you expect to be passed a
futex address. Upon completion you increment the value and call
sys_futex with FUTEX_WAKE.
This gives plenty of freedom at userlevel to implement the actual work.
--
--------------. ,-. 444 Castro Street
Ulrich Drepper \ ,-----------------' \ Mountain View, CA 94041 USA
Red Hat `--' drepper at redhat.com `---------------------------
next prev parent reply other threads:[~2003-10-04 6:39 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-03 15:59 [PATCH] [2/2] posix message queues Peter Wächtler
2003-10-03 18:16 ` Manfred Spraul
2003-10-05 12:42 ` Peter Wächtler
2003-10-05 14:39 ` Arjan van de Ven
2003-10-05 15:58 ` Ulrich Drepper
2003-10-03 22:22 ` Jakub Jelinek
2003-10-05 12:42 ` Peter Wächtler
2003-10-04 6:39 ` Ulrich Drepper [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-11-25 11:42 [PATCH] 2/2 POSIX " Michal Wronski
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