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/*

 *  Thread Queue Handler

 *

 *

 *  COPYRIGHT (c) 1989-1999.

 *  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.OARcorp.com/rtems/license.html.

 *

 *  threadq.c,v 1.21 2002/07/01 22:30:12 joel Exp

 */

#include <rtems/system.h>

#include <rtems/score/chain.h>

#include <rtems/score/isr.h>

#include <rtems/score/object.h>

#include <rtems/score/states.h>

#include <rtems/score/thread.h>

#include <rtems/score/threadq.h>

#include <rtems/score/tqdata.h>

/*PAGE

 *

 *  _Thread_queue_Initialize

 *

 *  This routine initializes the specified threadq.

 *

 *  Input parameters:

 *    the_thread_queue      - pointer to a threadq header

 *    discipline            - queueing discipline

 *    state                 - state of waiting threads

 *    timeout_status        - return on a timeout

 *

 *  Output parameters: NONE

 */

void _Thread_queue_Initialize(

  Thread_queue_Control         *the_thread_queue,

  Thread_queue_Disciplines      the_discipline,

  States_Control                state,

  unsigned32                    timeout_status

)

{

  unsigned32 index;

  the_thread_queue->state          = state;

  the_thread_queue->discipline     = the_discipline;

  the_thread_queue->timeout_status = timeout_status;

  the_thread_queue->sync_state     = THREAD_QUEUE_SYNCHRONIZED;

  switch ( the_discipline ) {

    case THREAD_QUEUE_DISCIPLINE_FIFO:

      _Chain_Initialize_empty( &the_thread_queue->Queues.Fifo );

      break;

    case THREAD_QUEUE_DISCIPLINE_PRIORITY:

      for( index=0 ;

           index < TASK_QUEUE_DATA_NUMBER_OF_PRIORITY_HEADERS ;

           index++)

        _Chain_Initialize_empty( &the_thread_queue->Queues.Priority[index] );

      break;

  }

}