From: Pradyumna Sampath <pradysam@gmail.com>
To: "M. Koehrer" <mathias_koehrer@arcor.de>
Cc: linux-rt-users@vger.kernel.org
Subject: Re: Looking for a real time IPC to be used with select
Date: Sat, 17 Apr 2010 16:42:59 +0200 [thread overview]
Message-ID: <r2r6d09081c1004170742ia4f0b1c5vfa51005c934617fd@mail.gmail.com> (raw)
In-Reply-To: <3215024.1271427173625.JavaMail.ngmail@webmail08.arcor-online.net>
On Fri, Apr 16, 2010 at 4:12 PM, M. Koehrer <mathias_koehrer@arcor.de> wrote:
> Now I have the need that another real time thread B should also be able
> to trigger the "select()" in the thread_func_A() above.
> This means, I should add a suitable inter-process-communication
> between thread A and B that can be used with select() as well.
> Having this, the thread A can be triggered by the socket or
> by the IPC from thread B by adding two file desciptors to the readfds
> of select().
>
> My question is now: What kind of IPC is preferred here?
> The only IPC I see is a local socket communication, however
> this looks like a huge overhead for triggering...
POSIX message queues in the kernel work fine for me. I had one problem
with the accuracy of the timeouts in mq_timedreceieve and mq_timedsend
which has been now fixed and is available as part of the latest -rt
patch.
regards
/prady
--
http://www.prady.in
next prev parent reply other threads:[~2010-04-17 14:43 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-16 14:12 Looking for a real time IPC to be used with select M. Koehrer
2010-04-16 20:30 ` Leyendecker, Robert
2010-04-17 7:55 ` Armin Steinhoff
2010-04-17 14:42 ` Pradyumna Sampath [this message]
2010-04-18 4:43 ` Sujit K M
2010-04-19 6:24 ` M. Koehrer
2010-04-19 6:31 ` M. Koehrer
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