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/*****************************************************************************
* $Id: thread.c 2918 2003-09-11 21:09:45Z dun $
*****************************************************************************
* Copyright (C) 2003 The Regents of the University of California.
* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
* Written by Chris Dunlap <cdunlap@llnl.gov>.
*
* This file is from LSD-Tools, the LLNL Software Development Toolbox.
*
* LSD-Tools is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* LSD-Tools is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with LSD-Tools; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*****************************************************************************/
#if HAVE_CONFIG_H
# include "config.h"
#endif /* HAVE_CONFIG_H */
#include <assert.h>
#include <errno.h>
#include <pthread.h>
#include "thread.h"
#if WITH_PTHREADS
#ifndef NDEBUG
int
lsd_mutex_is_locked (pthread_mutex_t *mutex)
{
/* Returns true if the mutex is locked; o/w, returns false.
*/
int rc;
assert (mutex != NULL);
rc = pthread_mutex_trylock (mutex);
return (rc == EBUSY ? 1 : 0);
}
#endif /* !NDEBUG */
#endif /* WITH_PTHREADS */
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