From: Marcel Holtmann <marcel@holtmann.org>
To: Jean Tourrilhes <jt@hpl.hp.com>
Cc: Max Krasnyansky <maxk@qualcomm.com>,
BlueZ Mailing List <bluez-devel@lists.sourceforge.net>
Subject: [Bluez-devel] Re: L2CAP non-blocking socket nasty race conditions
Date: Thu, 05 Feb 2004 03:36:43 +0100 [thread overview]
Message-ID: <1075948602.2783.129.camel@pegasus> (raw)
In-Reply-To: <20040205022635.GA24757@bougret.hpl.hp.com>
Hi Jean,
> > What I am thinking is that
> > if our socket is BT_LISTEN, we check for an not empty accept_q and than
> > iterate through all sockets for BT_CONNECTED. If we found one, we return
> > POLLIN else nothing.
>
> This is a bit yucky, especially that poll is performance
> critical (for scalability). That's why I was suggesting the socket
> counter in the parent. Check what's sk_ack_backlog does, it's very
> close to what we want.
yes I know, but worse performance only kicks in if it is a listen socket
and if it has at minimum one child in its queue. A second counter sounds
not really better to me and I think it will be very hackish.
Regards
Marcel
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next prev parent reply other threads:[~2004-02-05 2:36 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-04 1:58 L2CAP non-blocking socket nasty race conditions Jean Tourrilhes
2004-02-04 7:17 ` [Bluez-devel] " Marcel Holtmann
2004-02-04 17:58 ` Jean Tourrilhes
2004-02-04 19:58 ` [Bluez-devel] " Marcel Holtmann
2004-02-04 21:45 ` Jean Tourrilhes
2004-02-05 1:00 ` [Bluez-devel] " Marcel Holtmann
2004-02-05 1:11 ` Jean Tourrilhes
2004-02-05 1:30 ` [Bluez-devel] " Marcel Holtmann
2004-02-05 1:40 ` Jean Tourrilhes
2004-02-05 2:21 ` [Bluez-devel] " Marcel Holtmann
2004-02-05 2:26 ` Jean Tourrilhes
2004-02-05 2:36 ` Marcel Holtmann [this message]
2004-02-05 2:42 ` Jean Tourrilhes
2004-02-05 3:30 ` Jean Tourrilhes
2004-02-05 13:49 ` [Bluez-devel] " Marcel Holtmann
2004-02-05 17:19 ` Jean Tourrilhes
2004-02-05 18:17 ` [Bluez-devel] " Marcel Holtmann
2004-02-05 23:13 ` Jean Tourrilhes
2004-02-05 23:37 ` [Bluez-devel] " Marcel Holtmann
2004-02-05 23:43 ` Jean Tourrilhes
2004-02-04 11:23 ` [Bluez-devel] bluez & qos Mauro Tortonesi
2004-02-04 11:36 ` Marcel Holtmann
2004-02-04 17:46 ` [Bluez-devel] " Jean Tourrilhes
2004-02-05 10:46 ` Mauro Tortonesi
2004-02-05 17:22 ` Jean Tourrilhes
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