From owner-freebsd-hackers@FreeBSD.ORG Wed Aug 15 17:46:14 2012 Return-Path: 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 7FAA9106566B; Wed, 15 Aug 2012 17:46:14 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from mail.zoral.com.ua (mx0.zoral.com.ua [91.193.166.200]) by mx1.freebsd.org (Postfix) with ESMTP id E59448FC12; Wed, 15 Aug 2012 17:46:12 +0000 (UTC) Received: from skuns.kiev.zoral.com.ua (localhost [127.0.0.1]) by mail.zoral.com.ua (8.14.2/8.14.2) with ESMTP id q7FHkLOp012204; Wed, 15 Aug 2012 20:46:21 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.5/8.14.5) with ESMTP id q7FHk9Xl025996; Wed, 15 Aug 2012 20:46:09 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.5/8.14.5/Submit) id q7FHk9bE025995; Wed, 15 Aug 2012 20:46:09 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Wed, 15 Aug 2012 20:46:09 +0300 From: Konstantin Belousov To: davidxu@freebsd.org Message-ID: <20120815174609.GM5883@deviant.kiev.zoral.com.ua> References: <20120730102408.GA19983@stack.nl> <20120730105303.GU2676@deviant.kiev.zoral.com.ua> <20120805215432.GA28704@stack.nl> <20120806082535.GI2676@deviant.kiev.zoral.com.ua> <20120809105648.GA79814@stack.nl> <5029D727.2090105@freebsd.org> <20120814081830.GA5883@deviant.kiev.zoral.com.ua> <502A1788.9090702@freebsd.org> <20120814094111.GB5883@deviant.kiev.zoral.com.ua> <502A6B7A.6070504@gmail.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="kunpHVz1op/+13PW" Content-Disposition: inline In-Reply-To: <502A6B7A.6070504@gmail.com> User-Agent: Mutt/1.4.2.3i X-Virus-Scanned: clamav-milter 0.95.2 at skuns.kiev.zoral.com.ua X-Virus-Status: Clean X-Spam-Status: No, score=-4.0 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on skuns.kiev.zoral.com.ua Cc: freebsd-hackers@freebsd.org, Jilles Tjoelker Subject: Re: system() using vfork() or posix_spawn() and libthr X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Aug 2012 17:46:14 -0000 --kunpHVz1op/+13PW Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Aug 14, 2012 at 11:15:06PM +0800, David Xu wrote: > You are requiring the thread library to implement such a mutex > and other locks, that after vfork(), the mutex and other lock types must > still work across processes, the PTHREAD_PROCESS_PRIVATE type of > mutex and other locks now need to work in a PTHREAD_PROCESS_SHARE > mode. In fact, yes. In my patch I achieve this by single-threading the parent, which means that existing _PRIVATE mutexes are enough. --kunpHVz1op/+13PW Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (FreeBSD) iEYEARECAAYFAlAr4GAACgkQC3+MBN1Mb4jQYwCcCuTNRr3jfB0bPouzvpWU8MC8 lF8AoMKuyTX8zUBZW3c6ty6fW1KaxwHA =yypn -----END PGP SIGNATURE----- --kunpHVz1op/+13PW--