From owner-freebsd-hackers@FreeBSD.ORG  Sat Mar 10 00:04:42 2007
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
X-Original-To: hackers@freebsd.org
Delivered-To: freebsd-hackers@FreeBSD.ORG
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id 8059916A403
	for <hackers@freebsd.org>; Sat, 10 Mar 2007 00:04:42 +0000 (UTC)
	(envelope-from dudu@dudu.ro)
Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.187])
	by mx1.freebsd.org (Postfix) with ESMTP id 22CBD13C461
	for <hackers@freebsd.org>; Sat, 10 Mar 2007 00:04:41 +0000 (UTC)
	(envelope-from dudu@dudu.ro)
Received: by nf-out-0910.google.com with SMTP id k27so1182768nfc
	for <hackers@freebsd.org>; Fri, 09 Mar 2007 16:04:41 -0800 (PST)
Received: by 10.82.177.3 with SMTP id z3mr3786971bue.1173483512569;
	Fri, 09 Mar 2007 15:38:32 -0800 (PST)
Received: by 10.82.148.5 with HTTP; Fri, 9 Mar 2007 15:38:32 -0800 (PST)
Message-ID: <ad79ad6b0703091538t274ecc0cyd984b69cb5a0fd7d@mail.gmail.com>
Date: Sat, 10 Mar 2007 01:38:32 +0200
From: "Vlad GALU" <dudu@dudu.ro>
To: hackers@freebsd.org
In-Reply-To: <b1fa29170703091455q7f60bdb2r92ddfa447e5657b7@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
References: <45F1A97D.7090608@cs.rice.edu>
	<989648.79906.qm@web32913.mail.mud.yahoo.com>
	<b1fa29170703091455q7f60bdb2r92ddfa447e5657b7@mail.gmail.com>
Cc: 
Subject: Re: user-space locks
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 10 Mar 2007 00:04:42 -0000

On 3/10/07, Kip Macy <kip.macy@gmail.com> wrote:
> umtx
>

   Is it safe/recommended to use spinlocks, like in jemalloc, for very
small portions of code? I'm particularly interested in protecting
writes to a couple of word sized ints on amd64, so the critical
section wouldn't be longer than two assignments. Of course, I could
use a lockless queue for my purposes, but I'm asking anyway.

> On 3/9/07, Peter Holmes <peter_holmes2003@yahoo.com> wrote:
> > Does FreeBSD have anything similar to Futexes for
> > Linux.
> >
> > Thanks,
> > Peter
> >
> >
> >
> > ____________________________________________________________________________________
> > Looking for earth-friendly autos?
> > Browse Top Cars by "Green Rating" at Yahoo! Autos' Green Center.
> > http://autos.yahoo.com/green_center/
> > _______________________________________________
> > freebsd-hackers@freebsd.org mailing list
> > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers
> > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org"
> >
> _______________________________________________
> freebsd-hackers@freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-hackers
> To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org"
>


-- 
If it's there, and you can see it, it's real.
If it's not there, and you can see it, it's virtual.
If it's there, and you can't see it, it's transparent.
If it's not there, and you can't see it, you erased it.