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Date: Fri, 13 Feb 2004 10:07:27 -0500
From: Craig Rodrigues <rodrigc@crodrigues.org>
To: Dag-Erling Sm?rgrav <des@des.no>
Message-ID: <20040213150727.GA79077@crodrigues.org>
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cc: threads@freebsd.org
Subject: Re: checking lock ownership
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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