From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Wolfgang Grandegger <wg@domain.hid>
Cc: xenomai-help <xenomai@xenomai.org>
Subject: Re: [Xenomai-help] rt_pipe does not support POLLHUP on the Linux side
Date: Mon, 26 Mar 2012 22:27:51 +0200 [thread overview]
Message-ID: <4F70D147.8020302@domain.hid> (raw)
In-Reply-To: <4F7038FF.3050203@domain.hid>
On 03/26/2012 11:38 AM, Wolfgang Grandegger wrote:
> Hi Gilles,
>
> On 03/23/2012 02:14 PM, Gilles Chanteperdrix wrote:
>> On 03/23/2012 10:59 AM, Gilles Chanteperdrix wrote:
>>> On 03/23/2012 09:35 AM, Wolfgang Grandegger wrote:
>>>> Hello,
>>>>
>>>> while playing with rt_pipe, I realized that a select()/poll() function
>>>> does not unblock when the rt_pipe is deleted (via rt_pipe_delete) on the
>>>> other end. I think this is because the poll callback does not support
>>>> POLLHUP:
>>>>
>>>> http://www.rts.uni-hannover.de/xenomai/lxr/source/ksrc/nucleus/pipe.c#1024
>>>>
>>>> Is this by purpose? At least a blocking read() works as expected. It
>>>> does unblock and return 0 in that case.
>>>
>>> rt_pipes are deprecated, we are not going to add new features to them
>>> now. Please do not use them for new developments. We now have socket
>>> based RTIPCs. See examples/rtdm/profiles/ipc.
>
> Ah, I was not aware of that. This solution does also work for any skin
> (and does not require to misuse the native skin any more).
>
>> On the other hand, if you have a small patch to fix this, I will not
>> hurt anyone to merge it.
>
> OK. See patch below.
Merged, thanks.
--
Gilles.
prev parent reply other threads:[~2012-03-26 20:27 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-23 8:35 [Xenomai-help] rt_pipe does not support POLLHUP on the Linux side Wolfgang Grandegger
2012-03-23 9:59 ` Gilles Chanteperdrix
2012-03-23 13:14 ` Gilles Chanteperdrix
2012-03-26 9:38 ` Wolfgang Grandegger
2012-03-26 9:48 ` Wolfgang Grandegger
2012-03-26 9:53 ` Gilles Chanteperdrix
2012-03-26 10:20 ` Wolfgang Grandegger
2012-03-26 20:27 ` Gilles Chanteperdrix [this message]
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