Date: Thu, 8 Jan 2004 10:40:01 -0500 (EST) From: Daniel Eischen <eischen@vigrid.com> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/lib/libpthread/thread thr_create.cthr_private.h thr_rwlock.c Message-ID: <Pine.GSO.4.10.10401081039320.7267-100000@pcnet5.pcnet.com> In-Reply-To: <200401081537.i08Fb9rW030254@repoman.freebsd.org>
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On Thu, 8 Jan 2004, Daniel Eischen wrote: > deischen 2004/01/08 07:37:09 PST > > FreeBSD src repository > > Modified files: > lib/libpthread/thread thr_create.c thr_private.h thr_rwlock.c > Log: > Add a simple work-around for deadlocking on recursive read locks > on a rwlock while there are writers waiting. We normally favor > writers but when a reader already has at least one other read lock, > we favor the reader. We don't track all the rwlocks owned by a > thread, nor all the threads that own a rwlock -- we just keep > a count of all the read locks owned by a thread. Reviewed by: davidxu
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