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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.

 *

 *  $Id: threadqenqueue.c,v 1.2 2001-09-27 11:59:34 chris 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_Enqueue

 *

 *  This routine blocks a thread, places it on a thread, and optionally

 *  starts a timeout timer.

 *

 *  Input parameters:

 *    the_thread_queue - pointer to threadq

 *    timeout          - interval to wait

 *

 *  Output parameters: NONE

 *

 *  INTERRUPT LATENCY:

 *    only case

 */

void _Thread_queue_Enqueue(

  Thread_queue_Control *the_thread_queue,

  Watchdog_Interval     timeout

)

{

  Thread_Control *the_thread;

  the_thread = _Thread_Executing;

#if defined(RTEMS_MULTIPROCESSING)

  if ( _Thread_MP_Is_receive( the_thread ) && the_thread->receive_packet )

    the_thread = _Thread_MP_Allocate_proxy( the_thread_queue->state );

  else

#endif

    _Thread_Set_state( the_thread, the_thread_queue->state );

  if ( timeout ) {

    _Watchdog_Initialize(

       &the_thread->Timer,

       _Thread_queue_Timeout,

       the_thread->Object.id,

       NULL

    );

    _Watchdog_Insert_ticks( &the_thread->Timer, timeout );

  }

  switch( the_thread_queue->discipline ) {

    case THREAD_QUEUE_DISCIPLINE_FIFO:

      _Thread_queue_Enqueue_fifo( the_thread_queue, the_thread, timeout );

      break;

    case THREAD_QUEUE_DISCIPLINE_PRIORITY:

      _Thread_queue_Enqueue_priority( the_thread_queue, the_thread, timeout );

      break;

  }

}