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/*
* pthread_barrier_init.c
*
* Description:
* This translation unit implements barrier primitives.
*
* --------------------------------------------------------------------------
*
* Pthreads4w - POSIX Threads Library for Win32
* Copyright(C) 1998 John E. Bossom
* Copyright(C) 1999-2018, Pthreads4w contributors
*
* Homepage: https://sourceforge.net/projects/pthreads4w/
*
* 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:
* https://sourceforge.net/p/pthreads4w/wiki/Contributors/
*
* This file is part of Pthreads4w.
*
* Pthreads4w 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 3 of the License, or
* (at your option) any later version.
*
* Pthreads4w 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 Pthreads4w. If not, see <http://www.gnu.org/licenses/>. *
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "pthread.h"
#include "implement.h"
int
pthread_barrier_init (pthread_barrier_t * barrier,
const pthread_barrierattr_t * attr, unsigned int count)
{
pthread_barrier_t b;
if (barrier == NULL || count == 0)
{
return EINVAL;
}
if (NULL != (b = (pthread_barrier_t) calloc (1, sizeof (*b))))
{
b->pshared = (attr != NULL && *attr != NULL
? (*attr)->pshared : PTHREAD_PROCESS_PRIVATE);
b->nCurrentBarrierHeight = b->nInitialBarrierHeight = count;
b->lock = 0;
if (0 == sem_init (&(b->semBarrierBreeched), b->pshared, 0))
{
*barrier = b;
return 0;
}
(void) free (b);
}
return ENOMEM;
}
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