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/* Copyright (C) 2002, 2007, 2008 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
OpenSolaris bits contributed by David Bartley
<dtbartle@csclub.uwaterloo.ca>, 2008.
The GNU C 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 2.1 of the License, or (at your option) any later version.
The GNU C 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 the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <pthreadP.h>
#include <string.h>
#include <sys/synch.h>
#include <synchP.h>
static const struct pthread_barrierattr default_attr =
{
.pshared = PTHREAD_PROCESS_PRIVATE
};
int
pthread_barrier_init (barrier, attr, count)
pthread_barrier_t *barrier;
const pthread_barrierattr_t *attr;
unsigned int count;
{
struct pthread_barrier *ibarrier;
if (__builtin_expect (count == 0, 0))
return EINVAL;
const struct pthread_barrierattr *iattr
= (attr != NULL
? iattr = (struct pthread_barrierattr *) attr
: &default_attr);
if (iattr->pshared != PTHREAD_PROCESS_PRIVATE
&& __builtin_expect (iattr->pshared != PTHREAD_PROCESS_SHARED, 0))
/* Invalid attribute. */
return EINVAL;
ibarrier = (struct pthread_barrier *) barrier;
/* Initialize the individual fields. */
memset (ibarrier, 0, sizeof(struct pthread_barrier));
ibarrier->mutex.mutex_type = iattr->pshared;
ibarrier->mutex.mutex_flag = LOCK_INITED;
ibarrier->mutex.mutex_magic = MUTEX_MAGIC;
ibarrier->cond.cond_type = iattr->pshared;
ibarrier->cond.cond_magic = COND_MAGIC;
ibarrier->left = count;
ibarrier->init_count = count;
return 0;
}
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