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pthread_mutexattr_init.c    87 lines (79 with data), 2.7 kB

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/*
* pthread_mutexattr_init.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"
int
pthread_mutexattr_init (pthread_mutexattr_t * attr)
/*
* ------------------------------------------------------
* DOCPUBLIC
* Initializes a mutex attributes object with default
* attributes.
*
* PARAMETERS
* attr
* pointer to an instance of pthread_mutexattr_t
*
*
* DESCRIPTION
* Initializes a mutex attributes object with default
* attributes.
*
* NOTES:
* 1) Used to define mutex types
*
* RESULTS
* 0 successfully initialized attr,
* ENOMEM insufficient memory for attr.
*
* ------------------------------------------------------
*/
{
int result = 0;
pthread_mutexattr_t ma;
ma = (pthread_mutexattr_t) calloc (1, sizeof (*ma));
if (ma == NULL)
{
result = ENOMEM;
}
else
{
ma->pshared = PTHREAD_PROCESS_PRIVATE;
ma->kind = PTHREAD_MUTEX_DEFAULT;
}
*attr = ma;
return (result);
} /* pthread_mutexattr_init */