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/**
* @file
*
* @ingroup RTEMSImplClassicBarrier
*
* @brief This source file contains the implementation of
* rtems_barrier_create() and the Barrier Manager system initialization.
*/
/*
* COPYRIGHT (c) 1989-2006.
* On-Line Applications Research Corporation (OAR).
*
* 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/rtems/barrierimpl.h>
#include <rtems/rtems/status.h>
#include <rtems/rtems/support.h>
#include <rtems/rtems/attrimpl.h>
#include <rtems/score/isr.h>
#include <rtems/sysinit.h>
rtems_status_code rtems_barrier_create(
rtems_name name,
rtems_attribute attribute_set,
uint32_t maximum_waiters,
rtems_id *id
)
{
Barrier_Control *the_barrier;
uint32_t maximum_count;
if ( !rtems_is_name_valid( name ) ) {
return RTEMS_INVALID_NAME;
}
if ( id == NULL ) {
return RTEMS_INVALID_ADDRESS;
}
if ( _Attributes_Is_barrier_automatic( attribute_set ) ) {
if ( maximum_waiters == 0 ) {
return RTEMS_INVALID_NUMBER;
}
maximum_count = maximum_waiters;
} else {
maximum_count = CORE_BARRIER_MANUAL_RELEASE_MAXIMUM_COUNT;
}
the_barrier = _Barrier_Allocate();
if ( the_barrier == NULL ) {
_Objects_Allocator_unlock();
return RTEMS_TOO_MANY;
}
_CORE_barrier_Initialize( &the_barrier->Barrier, maximum_count );
*id = _Objects_Open_u32( &_Barrier_Information, &the_barrier->Object, name );
_Objects_Allocator_unlock();
return RTEMS_SUCCESSFUL;
}
static void _Barrier_Manager_initialization( void )
{
_Objects_Initialize_information( &_Barrier_Information );
}
RTEMS_SYSINIT_ITEM(
_Barrier_Manager_initialization,
RTEMS_SYSINIT_CLASSIC_BARRIER,
RTEMS_SYSINIT_ORDER_MIDDLE
);
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