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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: threadqextractfifo.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_Extract_fifo

 *

 *  This routine removes a specific thread from the specified threadq,

 *  deletes any timeout, and unblocks the thread.

 *

 *  Input parameters:

 *    the_thread_queue - pointer to a threadq header

 *    the_thread       - pointer to the thread to block

 *

 *  Output parameters: NONE

 *

 *  INTERRUPT LATENCY:

 *    EXTRACT_FIFO

 */

void _Thread_queue_Extract_fifo(

  Thread_queue_Control *the_thread_queue,

  Thread_Control       *the_thread

)

{

  ISR_Level level;

  _ISR_Disable( level );

  if ( !_States_Is_waiting_on_thread_queue( the_thread->current_state ) ) {

    _ISR_Enable( level );

    return;

  }

  _Chain_Extract_unprotected( &the_thread->Object.Node );

  if ( !_Watchdog_Is_active( &the_thread->Timer ) ) {

    _ISR_Enable( level );

  } else {

    _Watchdog_Deactivate( &the_thread->Timer );

    _ISR_Enable( level );

    (void) _Watchdog_Remove( &the_thread->Timer );

  }

  _Thread_Unblock( the_thread );

#if defined(RTEMS_MULTIPROCESSING)

  if ( !_Objects_Is_local_id( the_thread->Object.id ) )

    _Thread_MP_Free_proxy( the_thread );

#endif

}