Date: Fri, 13 Feb 2004 10:07:27 -0500 From: Craig Rodrigues <rodrigc@crodrigues.org> To: Dag-Erling Sm?rgrav <des@des.no> Cc: threads@freebsd.org Subject: Re: checking lock ownership Message-ID: <20040213150727.GA79077@crodrigues.org> In-Reply-To: <xzp1xozp5h5.fsf@dwp.des.no> References: <xzp1xozp5h5.fsf@dwp.des.no>
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On Fri, Feb 13, 2004 at 12:46:14PM +0100, Dag-Erling Sm?rgrav wrote: > Is there any way, either in POSIX or in FreeBSD, to check if a given > pthread_mutex_t is owned by the current thread? One way is to try unlock it with pthread_mutex_unlock(). If that fails, and errno == EPERM, then the current thread doesn't own the mutex. For a less portable way, look at the source code for _pthread_mutex_unlock() in /usr/src/lib/libpthread/thread/thr_mutex.c -- Craig Rodrigues http://crodrigues.org rodrigc@crodrigues.org
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