From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43)
	id 1FlICj-0001bp-LU
	for qemu-devel@nongnu.org; Wed, 31 May 2006 00:21:09 -0400
Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43)
	id 1FlICh-0001b7-Ja
	for qemu-devel@nongnu.org; Wed, 31 May 2006 00:21:09 -0400
Received: from [199.232.76.173] (helo=monty-python.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1FlICh-0001b2-F6
	for qemu-devel@nongnu.org; Wed, 31 May 2006 00:21:07 -0400
Received: from [211.5.2.81] (helo=nm01omta01d.dion.ne.jp)
	by monty-python.gnu.org with smtp (Exim 4.52) id 1FlIId-0001EU-Kf
	for qemu-devel@nongnu.org; Wed, 31 May 2006 00:27:15 -0400
Message-ID: <000901c68469$a8e12e00$0464a8c0@athlon>
From: "Kazu" <kazoo@r3.dion.ne.jp>
References: <F7F148C986A2A84F930FEB8C3B169EA0029211B4@OPDMEXO01.omnitel.it>
Subject: Re: [Qemu-devel] qemu dsound and crash
Date: Wed, 31 May 2006 13:21:16 +0900
MIME-Version: 1.0
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Reply-To: qemu-devel@nongnu.org
List-Id: qemu-devel.nongnu.org
List-Unsubscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/pipermail/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: qemu-devel@nongnu.org


ZIGLIO, Frediano wrote:

>I analyzed the dsound problem (using Windows dsound audio driver cause
>crash when closing console window cf "Qemu impressions"). The problem is
>very complicated. Is seems that for some reasons dsound dll is unloaded
>before msvcrt (which hold atexit and exit function) so dsound free
>memory then msvcrt calls at exit callbacks which try to access freed
>structure... The problem occur on Windows XP and I got error using Qemu
>downloaded at http://www.h7.dion.ne.jp/~qemu-win/ and compiling 0.8.1
>from sources. dsound.dll is loaded calling CoCreateInstance in
>audio/dsoundaudio.c (line 975) however is very strange this dll free
>cause even dsound.dll depends on msvcrt.dll. Perhaps a workaround can be
>to call SetConsoleCtrlHandler on main and calling exit by our own... I
>noted that for some reason qemu.exe seems to load msvcrt.dll two
>times...

Thanks for your info. I wondered what caused the problem. It seems that
optimization also have effect on the problem.

Regards,
Kazu