Date: Sun, 2 Nov 2014 23:22:24 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r273996 - in stable: 10/share/man/man3 8/share/man/man3 9/share/man/man3 Message-ID: <201411022322.sA2NMO0D001484@svn.freebsd.org>
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Author: jhb Date: Sun Nov 2 23:22:22 2014 New Revision: 273996 URL: https://svnweb.freebsd.org/changeset/base/273996 Log: MFC 273644,273738: 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 Modified: stable/8/share/man/man3/pthread_cleanup_pop.3 stable/8/share/man/man3/pthread_cleanup_push.3 Directory Properties: stable/8/share/man/man3/ (props changed) Changes in other areas also in this revision: Modified: stable/10/share/man/man3/pthread_cleanup_pop.3 stable/10/share/man/man3/pthread_cleanup_push.3 stable/9/share/man/man3/pthread_cleanup_pop.3 stable/9/share/man/man3/pthread_cleanup_push.3 Directory Properties: stable/10/ (props changed) stable/9/share/man/man3/ (props changed) Modified: stable/8/share/man/man3/pthread_cleanup_pop.3 ============================================================================== --- stable/8/share/man/man3/pthread_cleanup_pop.3 Sun Nov 2 22:58:30 2014 (r273995) +++ stable/8/share/man/man3/pthread_cleanup_pop.3 Sun Nov 2 23:22:22 2014 (r273996) @@ -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_pop +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: stable/8/share/man/man3/pthread_cleanup_push.3 ============================================================================== --- stable/8/share/man/man3/pthread_cleanup_push.3 Sun Nov 2 22:58:30 2014 (r273995) +++ stable/8/share/man/man3/pthread_cleanup_push.3 Sun Nov 2 23:22:22 2014 (r273996) @@ -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
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