/* * pthread_mutexattr_destroy.c * * Description: * This translation unit implements mutual exclusion (mutex) primitives. * * -------------------------------------------------------------------------- * *      Pthreads-win32 - POSIX Threads Library for Win32 *      Copyright(C) 1998 John E. Bossom *      Copyright(C) 1999,2005 Pthreads-win32 contributors *  *      Contact Email: rpj@callisto.canberra.edu.au *  *      The current list of contributors is contained *      in the file CONTRIBUTORS included with the source *      code distribution. The list can also be seen at the *      following World Wide Web location: *      http://sources.redhat.com/pthreads-win32/contributors.html *  *      This library is free software; you can redistribute it and/or *      modify it under the terms of the GNU Lesser General Public *      License as published by the Free Software Foundation; either *      version 2 of the License, or (at your option) any later version. *  *      This library 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 *      Lesser General Public License for more details. *  *      You should have received a copy of the GNU Lesser General Public *      License along with this library in the file COPYING.LIB; *      if not, write to the Free Software Foundation, Inc., *      59 Temple Place - Suite 330, Boston, MA 02111-1307, USA */#include "pthread.h"#include "implement.h"intpthread_mutexattr_destroy (pthread_mutexattr_t * attr)     /*      * ------------------------------------------------------      * DOCPUBLIC      *      Destroys a mutex attributes object. The object can      *      no longer be used.      *      * PARAMETERS      *      attr      *              pointer to an instance of pthread_mutexattr_t      *      *      * DESCRIPTION      *      Destroys a mutex attributes object. The object can      *      no longer be used.      *      *      NOTES:      *              1)      Does not affect mutexes created using 'attr'      *      * RESULTS      *              0               successfully released attr,      *              EINVAL          'attr' is invalid.      *      * ------------------------------------------------------      */{  int result = 0;  if (attr == NULL || *attr == NULL)    {      result = EINVAL;    }  else    {      pthread_mutexattr_t ma = *attr;      *attr = NULL;      free (ma);    }  return (result);}				/* pthread_mutexattr_destroy */