Re: Re: Looking for a real time IPC to be used with select

["M. Koehrer" <mathias_koehrer@arcor.de>]

Hi Pradyumna,

thanks for this approach!

> > 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.
I read again the man page "mq_overview" and found that the message queue descriptor 
could be used with select/poll! That's a point I have not realized so far.
Thus, this allows to use this as another promising approach!
BTW: When I use select() for the timeouts and mq_receive (instead of mq_timedreceive), 
I hope to find no accuaracy issue... 
I think select() is using high accuracy with the timeout in -rt.

Regards

Mathias

-- 
Mathias Koehrer
mathias_koehrer@arcor.de


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