Re: Implementation of POSIX shared memory objects

[yamt%mwd.biglobe.ne.jp@localhost (YAMAMOTO Takashi)]

> yamt%mwd.biglobe.ne.jp@localhost (YAMAMOTO Takashi) wrote:
> > hi,
> > 
> > > Hello,
> > > 
> > > Here is the implementation of POSIX shared memory objects:
> > > 
> > > http://www.netbsd.org/~rmind/shm_memobj.diff
> > > 
> > > Please review.
> > 
> > why did you choose to implement it in kernel?
> > 
> 
> - Some support from kernel would still be needed, eg. hooks to create and
>   unlink the object (note that object might stay with the data, even if
>   there are no references i.e. it's removed only after shm_unlink).
> 
> - While some management of objects could be in the userland, I do not really
>   see the point in splitting some parts to userland and some to kernel. Now
>   code is clean and in one place (and it could be a module anyway).
> 
> Why? :)

less kernel code is better unless there are reasons.
afaik it can be implemented in userland using a directory.  eg. /var/shm

YAMAMOTO Takashi

> 
> -- 
> Best regards,
> Mindaugas