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Message-ID: <3DD97A3D.2030909@kegel.com>
Date: Mon, 18 Nov 2002 15:39:41 -0800
From: Dan Kegel <dank@kegel.com>
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To: Davide Libenzi <davidel@xmailserver.org>
CC: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [rfc] epoll interface change and glibc bits ...
References: <Pine.LNX.4.44.0211181507510.979-100000@blue1.dev.mcafeelabs.com>
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Davide Libenzi wrote:
> On Mon, 18 Nov 2002, Dan Kegel wrote:
> 
> 
>>Ulrich wrote:
>>
>>>>epoll does hook f_op->poll() and hence uses the asm/poll.h bits.
>>>
>>>It does today.  We are talking about "you promise that this will be the
>>>case ever after or we'll cut your head off".  I have no idea why you're
>>>so reluctant since you don't have to maintain any of the user-level
>>>bits.  And it is not you who has to deal with the fallout of a change
>>>when it happens.
>>>
>>>If epoll is so different from poll (and this is what I've been told frmo
>>>Davide) then there should be a clear separation of the interfaces and
>>>all those arguing to unify the data types and constants better should
>>>rethink there understanding.
>>
>>epoll is not really that different from poll, is it?
>>It delivers edge-triggered versions of the same events poll uses.
>>Or is there something epoll does I'm not aware of?
> 
> 
> The interface ( edge-triggered ) is quite different and we saw in the
> previous experience how this might lead to confusion for the user. Putting
> epoll bits inside poll.h will IMHO increase this.

The only difference is the edge-triggered nature, though, right?
- Dan



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