From owner-svn-src-all@FreeBSD.ORG Sat Oct 25 19:31:35 2014 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 551B1FB0; Sat, 25 Oct 2014 19:31:35 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 282ACE54; Sat, 25 Oct 2014 19:31:35 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.9/8.14.9) with ESMTP id s9PJVZWf080555; Sat, 25 Oct 2014 19:31:35 GMT (envelope-from jhb@FreeBSD.org) Received: (from jhb@localhost) by svn.freebsd.org (8.14.9/8.14.9/Submit) id s9PJVYIk080552; Sat, 25 Oct 2014 19:31:34 GMT (envelope-from jhb@FreeBSD.org) Message-Id: <201410251931.s9PJVYIk080552@svn.freebsd.org> X-Authentication-Warning: svn.freebsd.org: jhb set sender to jhb@FreeBSD.org using -f From: John Baldwin Date: Sat, 25 Oct 2014 19:31:34 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r273644 - head/share/man/man3 X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 25 Oct 2014 19:31:35 -0000 Author: jhb Date: Sat Oct 25 19:31:34 2014 New Revision: 273644 URL: https://svnweb.freebsd.org/changeset/base/273644 Log: Clarify that pthread_cleanup_push()/pop() are implemented as macros that create a new code block and thus must be balanced at the same lexical scope. (This is also a requirement in POSIX.) PR: 194280 Submitted by: dr2867.business@pacbell.net MFC after: 1 week Modified: head/share/man/man3/pthread_cleanup_pop.3 head/share/man/man3/pthread_cleanup_push.3 Modified: head/share/man/man3/pthread_cleanup_pop.3 ============================================================================== --- head/share/man/man3/pthread_cleanup_pop.3 Sat Oct 25 19:01:02 2014 (r273643) +++ head/share/man/man3/pthread_cleanup_pop.3 Sat Oct 25 19:31:34 2014 (r273644) @@ -27,7 +27,7 @@ .\" .\" $FreeBSD$ .\" -.Dd July 30, 1998 +.Dd October 25, 2014 .Dt PTHREAD_CLEANUP_POP 3 .Os .Sh NAME @@ -50,6 +50,14 @@ If there is no cleanup routine then .Fn pthread_cleanup_pop does nothing. +.Pp +The +.Fn pthread_cleanup_push +function is implemented as a macro that closes a block. +Invocations of this function must appear as standalone statements that are +paired with an earlier call of +.Xr pthread_cleanup_push 3 +in the same lexical scope. .Sh RETURN VALUES The .Fn pthread_cleanup_pop Modified: head/share/man/man3/pthread_cleanup_push.3 ============================================================================== --- head/share/man/man3/pthread_cleanup_push.3 Sat Oct 25 19:01:02 2014 (r273643) +++ head/share/man/man3/pthread_cleanup_push.3 Sat Oct 25 19:31:34 2014 (r273644) @@ -27,7 +27,7 @@ .\" .\" $FreeBSD$ .\" -.Dd July 30, 1998 +.Dd October 25, 2014 .Dt PTHREAD_CLEANUP_PUSH 3 .Os .Sh NAME @@ -52,6 +52,14 @@ When is called, it is passed .Fa arg as its only argument. +.Pp +The +.Fn pthread_cleanup_push +function is implemented as a macro that opens a new block. +Invocations of this function must appear as standalone statements that are +paired with a later call of +.Xr pthread_cleanup_pop 3 +in the same lexical scope. .Sh RETURN VALUES The .Fn pthread_cleanup_push