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/**
* @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
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#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;
}
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