[ELDK] [Xenomai-help] shm_open returns errno 38 - function not implemented

[Yigal Goldberger]

Hi Again Gilles,
I've also sent this mail to the DENX mailing list , since the toolchain is suplied by DENX.
Our board was ported some two months ago by DENX software based on the MPC8272 (freescale) .
I'd like to add the support for shared memory , but as I said I'd like to keep the system as untouched as possible - as I said It's been tested and is running stable and with good performance .
Since I know that these things are delicate, I'd appreciate your guidance as to which files I need replaced (by which files) , and which configurations need be changed .
Best Regards,
Yigal Goldberger .



--- On Fri, 10/16/09, Gilles Chanteperdrix <gilles.chanteperdrix at xenomai.org> wrote:

> From: Gilles Chanteperdrix <gilles.chanteperdrix at xenomai.org>
> Subject: Re: [Xenomai-help] shm_open returns errno 38 - function not implemented
> To: "Yigal Goldberger" <yigal_gold at yahoo.com>
> Cc: xenomai-help at gna.org
> Date: Friday, October 16, 2009, 4:18 PM
> Yigal Goldberger wrote:
> > Gilles,
> > Thanks for the answer.
> > 
> > I need shared memory only between user space
> applications , so I do prefer the second option. (our system
> is stable and we're satisfied from the performance , so we'd
> like to make as little changes as possible at this mature
> stage of the project ).
> > Can you advise me how to get the right version of the
> glibc (is it a stand alone change , simply replacing the
> glibc file , or do I need to make other changes ?)
> > 
> > Thanks again to the Xenomai operation , and to you
> personaly for your support !
> > Yigal Goldberger .
> 
> Any reasonably recent version of the glibc should do, but:
> - you may be using the glibc from your toolchain, so
> changing glibc may
> mean changing toolchain;
> - well, the glibc is a bit the heart of the user-space
> support. It has
> more than one files. And changing them may change a lot of
> things.
> 
> So, I think, the simpler thing for you is to use xenomai
> shared memories.
> 
> 
> -- 
>                
>                
>           Gilles
> 
>