/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup POSIXAPI
*
* @brief Call to Function Enables Reinitializing of the Barrier
*/
/*
* POSIX Barrier Manager -- Initialize a Barrier Instance
*
* COPYRIGHT (c) 1989-2006.
* On-Line Applications Research Corporation (OAR).
*
* Copyright (c) 2017 embedded brains GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/posix/barrierimpl.h>
#include <rtems/posix/posixapi.h>
RTEMS_STATIC_ASSERT(
offsetof( POSIX_Barrier_Control, flags )
== offsetof( pthread_barrier_t, _flags ),
POSIX_BARRIER_CONTROL_FLAGS
);
RTEMS_STATIC_ASSERT(
offsetof( POSIX_Barrier_Control, count )
== offsetof( pthread_barrier_t, _count ),
POSIX_BARRIER_CONTROL_COUNT
);
RTEMS_STATIC_ASSERT(
offsetof( POSIX_Barrier_Control, waiting_threads )
== offsetof( pthread_barrier_t, _waiting_threads ),
POSIX_BARRIER_CONTROL_WAITING_THREADS
);
RTEMS_STATIC_ASSERT(
offsetof( POSIX_Barrier_Control, Queue )
== offsetof( pthread_barrier_t, _Queue ),
POSIX_BARRIER_CONTROL_QUEUE
);
RTEMS_STATIC_ASSERT(
sizeof( POSIX_Barrier_Control ) == sizeof( pthread_barrier_t ),
POSIX_BARRIER_CONTROL_SIZE
);
int pthread_barrier_init(
pthread_barrier_t *_barrier,
const pthread_barrierattr_t *attr,
unsigned int count
)
{
POSIX_Barrier_Control *barrier;
barrier = _POSIX_Barrier_Get( _barrier );
/*
* Error check parameters
*/
if ( barrier == NULL ) {
return EINVAL;
}
if ( count == 0 ) {
return EINVAL;
}
if ( attr != NULL ) {
/*
* Now start error checking the attributes that we are going to use
*/
if ( !attr->is_initialized )
return EINVAL;
if ( !_POSIX_Is_valid_pshared( attr->process_shared ) ) {
return EINVAL;
}
}
barrier->flags = (uintptr_t) barrier ^ POSIX_BARRIER_MAGIC;
barrier->count = count;
barrier->waiting_threads = 0;
_Thread_queue_Queue_initialize( &barrier->Queue.Queue, NULL );
return 0;
}