From: bert hubert <ahu@ds9a.nl>
To: Davide Libenzi <davidel@xmailserver.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [patch] total-epoll r2 ...
Date: Sat, 2 Nov 2002 22:37:59 +0100 [thread overview]
Message-ID: <20021102213759.GA9440@outpost.ds9a.nl> (raw)
In-Reply-To: <Pine.LNX.4.44.0211021126110.951-100000@blue1.dev.mcafeelabs.com>
On Sat, Nov 02, 2002 at 11:40:55AM -0800, Davide Libenzi wrote:
> http://www.xmailserver.org/linux-patches/epoll.txt
This page still contains:
Furthermore, the function do_use_fd() immediately tries to read(2)
from the fd. If it does not do so, there is a race condition with the
risk of losing an event before interest in it was registered. This
read may well return EAGAIN, which should be a cause for calling
epoll_wait().
Am I correct in understanding that this is no longer true because epoll_ctl
inserts an event if the poll condition is met?
Furthermore, I don't think the epoll(2) page is that helpful as even an
application developer that follows lkml (ie, me) has any use of the
'waitqueue' analogy.
Regards,
bert
--
http://www.PowerDNS.com Versatile DNS Software & Services
http://lartc.org Linux Advanced Routing & Traffic Control HOWTO
next prev parent reply other threads:[~2002-11-02 21:31 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-02 19:40 Davide Libenzi
2002-11-02 20:17 ` Davide Libenzi
2002-11-03 13:21 ` bert hubert
2002-11-03 17:30 ` Davide Libenzi
2002-11-03 19:15 ` Davide Libenzi
2002-11-02 21:37 ` bert hubert [this message]
2002-11-02 22:11 ` Davide Libenzi
2002-11-02 22:08 ` bert hubert
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