Re: [Xenomai-help] Re: RTDM driver questions

[Jan Kiszka <jan.kiszka@domain.hid>]

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Thomas Witzel wrote:
> On Tuesday 23 May 2006 09:13, Jan Kiszka wrote:
>> Thomas Witzel wrote:
>> Why not extending your sample buffer to some FIFO by providing more space?
> 
> That is exactly my thinking, but either I'm blind, or I can't see any FIFO 
> functionality in rtdm. I could implement it myself, but I'm asking here in 
> case that I might not have to do this.

Probably because it's either too simple or too specific. Take a look at
this FIFO [1] e.g. It handles single network packets, with or without
locking dependent on the number of readers/writers. Would look different
again if you decide to dequeue more than one packet at a time. Further
FIFOs are contained in the 16550A driver, but I do not see urging
similarities between all of them.

Anyway, if someone drafts a generic FIFO for RTDM, I would definitely
welcome this. Would not be the first time users came up with concrete
scenarios, and we finally added a useful new feature.

Jan


[1]http://www.rts.uni-hannover.de/rtnet/lxr/source/stack/include/rtskb_fifo.h?v=SVN


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