corebarrierimpl.h

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/*
 *  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.
 */

#ifndef _RTEMS_SCORE_COREBARRIERIMPL_H
#define _RTEMS_SCORE_COREBARRIERIMPL_H

#include <rtems/score/corebarrier.h>
#include <rtems/score/thread.h>
#include <rtems/score/threadqimpl.h>
#include <rtems/score/watchdog.h>

#ifdef __cplusplus
extern "C" {
#endif

typedef enum {
  CORE_BARRIER_STATUS_SUCCESSFUL,
  CORE_BARRIER_STATUS_AUTOMATICALLY_RELEASED,
  CORE_BARRIER_WAS_DELETED,
  CORE_BARRIER_TIMEOUT
}   CORE_barrier_Status;

#define CORE_BARRIER_STATUS_LAST CORE_BARRIER_TIMEOUT

typedef void ( *CORE_barrier_API_mp_support_callout )(
                 Thread_Control *,
                 Objects_Id
             );

void _CORE_barrier_Initialize(
  CORE_barrier_Control       *the_barrier,
  CORE_barrier_Attributes    *the_barrier_attributes
);

RTEMS_INLINE_ROUTINE void _CORE_barrier_Destroy(
  CORE_barrier_Control *the_barrier
)
{
  _Thread_queue_Destroy( &the_barrier->Wait_queue );
}

void _CORE_barrier_Wait(
  CORE_barrier_Control                *the_barrier,
  Thread_Control                      *executing,
  Objects_Id                           id,
  bool                                 wait,
  Watchdog_Interval                    timeout,
  CORE_barrier_API_mp_support_callout  api_barrier_mp_support
);

uint32_t _CORE_barrier_Release(
  CORE_barrier_Control                *the_barrier,
  Objects_Id                           id,
  CORE_barrier_API_mp_support_callout  api_barrier_mp_support
);

#define _CORE_barrier_Flush( _the_barrier, _remote_extract_callout, _status) \
  _Thread_queue_Flush( \
    &((_the_barrier)->Wait_queue), \
    (_remote_extract_callout), \
    (_status) \
  )

RTEMS_INLINE_ROUTINE bool _CORE_barrier_Is_automatic(
  CORE_barrier_Attributes *the_attribute
)
{
   return
     (the_attribute->discipline == CORE_BARRIER_AUTOMATIC_RELEASE);
}

RTEMS_INLINE_ROUTINE uint32_t  _CORE_barrier_Get_number_of_waiting_threads(
  CORE_barrier_Control  *the_barrier
)
{
  return the_barrier->number_of_waiting_threads;
}

#ifdef __cplusplus
}
#endif

#endif
/* end of include file */