From: "Daryl Van Vorst" <daryl@wideray.com>
To: "'BlueZ Mailing List'" <bluez-devel@lists.sourceforge.net>
Subject: RE: [Bluez-devel] Rfcomm use count
Date: Wed, 8 Sep 2004 15:48:25 -0700 [thread overview]
Message-ID: <001501c495f5$f36b05e0$1a01010a@baked> (raw)
In-Reply-To: <001601c48fa7$38cce900$1a01010a@baked>
Marcel,
I've been able to get the rfcomm use count to stick above 0 using a
single-threaded app which only does RFCOMM socket calls. After killing
hciattach and all bluetooth related programs, I have this:
lsmod:
Module Size Used by Not tainted
rfcomm 23268 2 (autoclean)
hci_uart 5656 0 (autoclean)
l2cap 17028 1 (autoclean) [rfcomm]
bluez 32392 0 (autoclean) [rfcomm hci_uart l2cap]
cat /proc/bluetooth/rfcomm:
sk 3A:A4:58:16:05:00 26:02:5F:16:05:00 9 4
sk 3A:A4:58:16:05:00 26:02:5F:16:05:00 9 10
This shows, I think, two sockets in the BT_CLOSED state which aren't =
getting
cleaned up. Kernel is 2.4.21-mh10 running on an ARM (with ARM patches, =
which
as far as I can tell don't touch any bluetooth code).
The test program loops, doing the following, in pseudo code:
While(1) {
1. Connect to remote device via rfcomm
2. send a few 100 bytes of data
3. Attempt to receive, but the remote side closes the connection.
4. creates a socket, binds, listens, and accepts an incomming rfcomm
connection
5. closes the listening socket (continues to use the socket return
by accept)
6. sends a few 100 bytes and receives ~100kB.
7. closes the socket
}
Unfortunately the problem is not easily reproduced. It can take all day =
for
it to happen, with the test program being re-run many times (and stopped
with ctrl-c).
There are two modules connected via serial. On the device two copies of =
this
program are run, each one specifying a local bluetooth device in the =
bind
calls for connect and listen/accept. i.e. each program works with its =
own
local device and does not do anything with the other device.
Any thoughts?
-Daryl.
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next prev parent reply other threads:[~2004-09-08 22:48 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-31 22:09 [Bluez-devel] Rfcomm use count Daryl Van Vorst
2004-09-08 22:48 ` Daryl Van Vorst [this message]
2004-09-08 23:10 ` Daryl Van Vorst
2004-09-12 14:15 ` Marcel Holtmann
-- strict thread matches above, loose matches on Subject: below --
2004-09-13 19:06 Daryl Van Vorst
2004-09-13 20:48 ` Daryl Van Vorst
2004-09-13 23:54 ` Daryl Van Vorst
2004-09-14 9:18 ` Marcel Holtmann
2004-09-14 21:58 ` Daryl Van Vorst
2004-09-17 0:10 [Bluez-devel] Rfcomm Use Count Daryl Van Vorst
2004-09-17 8:58 ` Marcel Holtmann
2004-09-20 17:58 ` Daryl Van Vorst
2004-09-20 18:32 ` Marcel Holtmann
2004-09-20 18:52 ` Daryl Van Vorst
2004-09-20 19:48 ` Marcel Holtmann
2004-09-20 20:52 ` Daryl Van Vorst
2004-09-20 18:37 ` Daryl Van Vorst
2004-09-20 19:50 ` Marcel Holtmann
2004-09-20 20:11 ` Daryl Van Vorst
2004-09-20 20:34 ` Marcel Holtmann
2004-09-20 21:03 ` Daryl Van Vorst
2004-09-20 21:28 ` Marcel Holtmann
2004-09-20 22:38 ` Daryl Van Vorst
2004-09-20 23:33 ` Marcel Holtmann
2004-09-21 20:14 ` Daryl Van Vorst
2004-09-21 20:32 ` Marcel Holtmann
2004-09-21 20:39 ` Daryl Van Vorst
2004-09-21 21:26 ` Daryl Van Vorst
2004-09-21 22:07 ` Marcel Holtmann
2004-09-21 22:26 ` Marcel Holtmann
2004-09-21 22:44 ` Daryl Van Vorst
2004-09-22 11:08 ` Marcel Holtmann
2004-09-22 13:53 ` Marcel Holtmann
2004-09-22 17:57 ` Daryl Van Vorst
2004-09-22 18:12 ` Marcel Holtmann
2004-09-22 19:05 ` Daryl Van Vorst
2004-09-22 19:33 ` Marcel Holtmann
2004-09-22 19:52 ` Daryl Van Vorst
2004-09-22 19:57 ` Marcel Holtmann
2004-09-22 20:05 ` Daryl Van Vorst
[not found] ` <1096471423.20392.444.camel@igno>
2004-10-02 9:26 ` Marcel Holtmann
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