glibc/sysdeps/mach/hurd/htl/pt-mutex-init.c

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/* pthread_mutex_init. Hurd version.
Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License
as published by the Free Software Foundation; either
version 2 of the license, or (at your option) any later version.
This program 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 Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this program; if not, see
<http://www.gnu.org/licenses/>.
*/
#include <pthread.h>
#include <stdlib.h>
#include <assert.h>
#include <pt-internal.h>
#include "pt-mutex.h"
#include <hurdlock.h>
static const pthread_mutexattr_t dfl_attr = {
.__prioceiling = 0,
.__protocol = PTHREAD_PRIO_NONE,
.__pshared = PTHREAD_PROCESS_PRIVATE,
.__mutex_type = __PTHREAD_MUTEX_TIMED
};
int
_pthread_mutex_init (pthread_mutex_t *mtxp, const pthread_mutexattr_t *attrp)
{
if (attrp == NULL)
attrp = &dfl_attr;
mtxp->__flags = (attrp->__pshared == PTHREAD_PROCESS_SHARED ?
GSYNC_SHARED : 0) | ((attrp->
__prioceiling & PTHREAD_MUTEX_ROBUST) ?
PTHREAD_MUTEX_ROBUST : 0);
mtxp->__type = attrp->__mutex_type +
(attrp->__mutex_type != __PTHREAD_MUTEX_TIMED);
mtxp->__owner_id = 0;
mtxp->__shpid = 0;
mtxp->__cnt = 0;
mtxp->__lock = 0;
return 0;
}
strong_alias (_pthread_mutex_init, pthread_mutex_init)