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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>
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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.

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