Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com
Date: Mon, 4 Apr 2005 16:25:07 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: ipc, sockets and windows sp2
Message-ID: <20050404142507.GT1471@cygbert.vinschen.de>
Reply-To: cygwin AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
References: <424D0232 DOT 5060305 AT smousseland DOT com> <20050401090414 DOT GD7415 AT cygbert DOT vinschen DOT de> <424D2B0B DOT 8000604 AT smousseland DOT com> <20050401121143 DOT GD1471 AT cygbert DOT vinschen DOT de> <424D5C64 DOT 5050706 AT smousseland DOT com> <20050401160749 DOT GH1471 AT cygbert DOT vinschen DOT de> <4250E410 DOT 1060708 AT smousseland DOT com> <20050404103824 DOT GS1471 AT cygbert DOT vinschen DOT de> <9305417ca9a2f2601ad20b83801d2f92 AT smousseland DOT com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <9305417ca9a2f2601ad20b83801d2f92@smousseland.com>
User-Agent: Mutt/1.4.2i

On Apr  4 15:13, Vincent Dedun wrote:
> i have no idea how to do this, i'm not a good system programmer.

gdb?

> further more, i have a slow computer, and recompiling cygwin is long.
> I even don't know how to active debugging (dprintf) on cygwin dll.

The debug output in cygserver is activated by giving the option `-d'
to cygserver:

  $ /path/to/cygserver -d

> I just saw a strange stuff : in sysv_sem.cc (cygserver) at end of semop 
> function (:done2 label), the mutex is released after waking up waiting 
> process, shouldn't it be the inverse ?

No, the mtx_unlock is correct.  If you're looking for bugs, they are very
likely in the bsd_* files in cygserver.  Even though the sysv_* files taken
from FreeBSD are not proved to be 100% correct, there's a high probability
that I produced the bug in some of the bsd emulation functions.  msleep is
a good candidate, FWIW.

Any active debugging or tracking down the bug is highly appreciated,
probably not only by me.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          mailto:cygwin AT cygwin DOT com
Red Hat, Inc.

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/