Re: [Xenomai-help] Some problems with shared memory

[Thomas Lockhart <Thomas.Lockhart@domain.hid>]

[-- Attachment #1: Type: text/plain, Size: 879 bytes --]

>  But the problem that the origonal poster reported was  a  restriction
>  of  the "length" parameter - his test seems to demonstrate that
>  under Xenomai the legth must be a multiple of the page sise, while in
>  plain Linux no such restriction exists (I can provide test  code  for
>  that case, if wanted).

Hmm. My code does round the length to a multiple of the page size too. 
I'm pretty sure I would not have done this if it was not required but my 
svn notes are not explicit on this. The man page could be considered 
ambiguous: "EINVAL We  don't  like  start,  length, or offset (e.g., 
they are too large, or not aligned on a page boundary)." but only with a 
liberal reading of the sentence.

hth

                                      - Tom

-- 
Thomas Lockhart
Supervisor, Distributed and Real-time Group
Instrument Software and Science Data Systems
Caltech/JPL


[-- Attachment #2: Type: text/html, Size: 1453 bytes --]