From owner-cvs-src@FreeBSD.ORG  Sat Nov 26 23:54:58 2005
Return-Path: <owner-cvs-src@FreeBSD.ORG>
X-Original-To: cvs-src@FreeBSD.org
Delivered-To: cvs-src@FreeBSD.org
Received: from [127.0.0.1] (localhost [127.0.0.1])
	by hub.freebsd.org (Postfix) with ESMTP id 5626516A420;
	Sat, 26 Nov 2005 23:54:57 +0000 (GMT)
	(envelope-from davidxu@freebsd.org)
Message-ID: <4388F5E8.7090208@freebsd.org>
Date: Sun, 27 Nov 2005 07:55:20 +0800
From: David Xu <davidxu@freebsd.org>
User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US;
	rv:1.7.10) Gecko/20050806
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: Craig Rodrigues <rodrigc@crodrigues.org>
References: <200511261255.jAQCtaSl073864@repoman.freebsd.org>
	<20051126233808.GA3251@crodrigues.org>
In-Reply-To: <20051126233808.GA3251@crodrigues.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: Re: cvs commit: src/include mqueue.h
X-BeenThere: cvs-src@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: CVS commit messages for the src tree <cvs-src.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src>,
	<mailto:cvs-src-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-src>
List-Post: <mailto:cvs-src@freebsd.org>
List-Help: <mailto:cvs-src-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src>,
	<mailto:cvs-src-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 26 Nov 2005 23:54:58 -0000

Craig Rodrigues wrote:

>On Sat, Nov 26, 2005 at 12:55:36PM +0000, David Xu wrote:
>  
>
>>davidxu     2005-11-26 12:55:36 UTC
>>
>>  FreeBSD src repository
>>
>>  Added files:
>>    include              mqueue.h 
>>  Log:
>>  Bring in POSIX message queue header file.
>>    
>>
>
>Is this header the same or different
>from the header in /usr/src/sys/posix4 ?
>
>  
>
It is different,  I don't know why it is existing there.

>Mike Barcroft stopped the posix4 version of this header
>from being installed in /usr/include during buildworld,
>because POSIX message queues were not fully implemented
>in FreeBSD:
>
>http://docs.freebsd.org/cgi/getmsg.cgi?fetch=10929+0+archive/2002/freebsd-standards/20021006.freebsd-standards
>
>Do POSIX message queues now work in FreeBSD?
>  
>
It should work,  it is implemented as a file descriptor, so you can use
select(), or kqueue.  Don't use mq_notify(), because fork() duplicates file
descriptor which is really a trouble for mq_notify(), I am still working
on it.