re: [PATCH] /dev/epoll update ...

Davide Libenzi (davidel@xmailserver.org)
Wed, 19 Sep 2001 10:21:26 -0700 (PDT)


On 19-Sep-2001 Dan Kegel wrote:
> Davide wrote:
>
>> The /dev/epoll patch has been updated :
>>
>> *) Stale events removal
>> *) Help in Configure.help ( thanks to David E. Weekly )
>> *) Fit 2.4.9
>> ...
>> http://www.xmailserver.org/linux-patches/nio-improve.html
>
> Davide,
> I'm getting ready to stress-test /dev/epoll finally.
> In porting my Poller_devpoll.{cc,h} to support /dev/epoll, I noticed
> the following issues:

Pls wait the end of today to let me update the patch correctly.

>
> 2. The names made visible to userland by your patch do not follow
> a consistent naming convention. May I suggest that you use
> EPOLL_ as a uniform prefix, and epoll.h as the user-visible include file?
> http://www.opengroup.org/onlinepubs/007908799/xsh/compilation.html
> shows that Posix cares greatly about this kind of namespace issue,
> and it'd be nice to follow their lead, even though this isn't a Posix
> interface.

Posix spoke :) I'll change it in the next versions.

> 3. You modify asm/poll.h. Can your modifications be restricted to epoll.h
> instead? (Hey, I don't know much, maybe there's a good reason you did this.)

This is where flags are stored and using an external file could lead to a collision
when other coders will add flags. IMHO is better to have a centralized definition
of these flags.

- Davide

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