Date: Sun, 31 Oct 2004 06:19:45 -0500 (EST) From: Daniel Eischen <deischen@freebsd.org> To: Brian Feldman <green@freebsd.org> Cc: cvs-all@freebsd.org Subject: Re: cvs commit: src/lib/libpthread/thread thr_mutex.c Message-ID: <Pine.GSO.4.43.0410310608001.21125-100000@sea.ntplx.net> In-Reply-To: <200410310503.i9V53ofj011896@repoman.freebsd.org>
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On Sun, 31 Oct 2004, Brian Feldman wrote: > green 2004-10-31 05:03:50 UTC > > FreeBSD src repository > > Modified files: > lib/libpthread/thread thr_mutex.c > Log: > Make pthread_mutex_trylock(3) return EBUSY on failure, as all software > packages expect and seems to be most correct according to the slightly- > ambiguous standards. > > MFC after: 1 month > Corroborated by: POSIX <http://tinyurl.com/4uvub>; > Reviewed by: silence on threads@ I never saw this, and there has been a couple of long threads about it. The current behavior was deemed correct especially since default mutexes are error check mutexes. The rationale is that it provides a way for a thread to tell if it owns the mutex if EDEADLK is returned. Please back out and sorry for not seeing a posting on -threads. -- Dan Eischen
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