From: Philippe Gerum <rpm@xenomai.org>
To: Makarand Pradhan <makarandpradhan@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-core] realtime pipes
Date: Mon, 16 Jan 2012 15:35:21 +0100 [thread overview]
Message-ID: <4F1435A9.6030609@domain.hid> (raw)
In-Reply-To: <4F143351.6050406@domain.hid>
On 01/16/2012 03:25 PM, Makarand Pradhan wrote:
> Hi,
>
> "Real-time pipes are deprecated."
>
> We use a lot of rt pipes. So, can you pl elaborate on this? I would
> highly appreciate if you can comment on the following.
>
> 1. When will the rt pipe interface be removed? Any time frame?
Xenomai 3. Xenomai 2.x will keep them forever.
> 2. Would like to understand the reason for deprecating the interface.
>
- Because there is a better socket-based API implemented by the RTIPC
driver w/ the XDDP protocol, which does not require running application
level code in kernel space (RT_PIPE is definitely an application level
API). This new interface is available since Xenomai 2.5.x. It is
functionally 100% equivalent to the legacy RT_PIPE API.
- Because no support will be provided in Xenomai 3 for running
application level code in kernel space, so RT_PIPE have to go from
kernel space. However, RT_PIPE are still part of the user-space API of
Xenomai 3, interfacing with XDDP endpoints in kernel space.
I'm really referring to application level code, by contrast to RTDM
driver level code which will obviously remain a first-class citizen in
kernel space.
See:
o http://www.xenomai.org/index.php/Xenomai:Roadmap
o
http://www.xenomai.org/documentation/xenomai-2.6/html/api/group__rtipc.html
o examples/rtdm/profiles/ipc in the Xenomai distro
> Thanks and Rgds,
> Mak.
>
>
> On 15/01/12 12:37 PM, Gilles Chanteperdrix wrote:
>> Real-time pipes are deprecated.
>
>
--
Philippe.
next prev parent reply other threads:[~2012-01-16 14:35 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-15 12:36 [Xenomai-core] realtime pipes Jan-Erik Lange
2012-01-15 17:37 ` Gilles Chanteperdrix
[not found] ` <BLU166-W8A6F8615612DBB382F22FC4820@domain.hid>
2012-01-15 18:55 ` [Xenomai-core] FW: " Jan-Erik Lange
2012-01-16 14:25 ` [Xenomai-core] " Makarand Pradhan
2012-01-16 14:35 ` Philippe Gerum [this message]
2012-01-16 15:09 ` Makarand Pradhan
2012-01-16 15:24 ` Philippe Gerum
2012-01-16 15:36 ` Makarand Pradhan
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