From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 17021 invoked by alias); 19 Nov 2012 05:10:33 -0000 Received: (qmail 17004 invoked by uid 22791); 19 Nov 2012 05:10:30 -0000 X-SWARE-Spam-Status: No, hits=-0.8 required=5.0 tests=AWL,BAYES_05,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,RCVD_IN_HOSTKARMA_YE,RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from nm11.bullet.mail.bf1.yahoo.com (HELO nm11.bullet.mail.bf1.yahoo.com) (98.139.212.170) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Mon, 19 Nov 2012 05:10:25 +0000 Received: from [98.139.215.140] by nm11.bullet.mail.bf1.yahoo.com with NNFMP; 19 Nov 2012 05:10:24 -0000 Received: from [98.139.212.242] by tm11.bullet.mail.bf1.yahoo.com with NNFMP; 19 Nov 2012 05:10:24 -0000 Received: from [127.0.0.1] by omp1051.mail.bf1.yahoo.com with NNFMP; 19 Nov 2012 05:10:24 -0000 Received: (qmail 76222 invoked by uid 60001); 19 Nov 2012 05:10:24 -0000 Received: from [107.3.182.162] by web165005.mail.bf1.yahoo.com via HTTP; Sun, 18 Nov 2012 21:10:24 PST X-Rocket-MIMEInfo: 001.001,SGksCgpBY2NvcmRpbmcgdG8gaHR0cDovL2djYy5nbnUub3JnL29ubGluZWRvY3MvZ2NjLTQuMS4xL2djYy9BdG9taWMtQnVpbHRpbnMuaHRtbCwgX19zeW5jX2Jvb2xfY29tcGFyZV9hbmRfc3dhcCgpIHN1cHBvcnRzIGludCwgbG9uZywgbG9uZyBsb25nLCBhbmQgdGhlaXIgdW5zaWduZWQgY291bnRlcnBhcnRzLCBhbmQgR0NDIHdpbGwgYWxsb3cgYW55IGludGVncmFsIHNjYWxhciBvciBwb2ludGVyIHR5cGUgdGhhdCBpcyAxLCAyLCA0IG9yIDggYnl0ZXMgaW4gbGVuZ3RoLgoKSSB3b25kZXIgaW4gd2hhdCABMAEBAQE- Message-ID: <1353301824.76156.YahooMailNeo@web165005.mail.bf1.yahoo.com> Date: Mon, 19 Nov 2012 05:10:00 -0000 From: Hei Chan Reply-To: Hei Chan Subject: __sync_bool_compare_and_swap() With a Pointer To: "gcc-help@gcc.gnu.org" MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable X-IsSubscribed: yes Mailing-List: contact gcc-help-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-help-owner@gcc.gnu.org X-SW-Source: 2012-11/txt/msg00143.txt.bz2 Hi, According to http://gcc.gnu.org/onlinedocs/gcc-4.1.1/gcc/Atomic-Builtins.ht= ml, __sync_bool_compare_and_swap() supports int, long, long long, and their= unsigned counterparts, and GCC will allow any integral scalar or pointer t= ype that is 1, 2, 4 or 8 bytes in length. I wonder in what situation the pointer type won't be 1, 2, 4 or 8 bytes in = length.=A0 Let's say I am running on a 64-bit Intel CPU. Thanks in advance. Cheers, Hei