path: root/cpukit/score/src/threadsetstate.c

/*
 *  Thread Handler / Thread Set State
 *
 *  COPYRIGHT (c) 1989-2011.
 *  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.com/license/LICENSE.
 *
 *  $Id$
 */

#if HAVE_CONFIG_H
#include "config.h"
#endif

#include <rtems/system.h>
#include <rtems/score/apiext.h>
#include <rtems/score/context.h>
#include <rtems/score/interr.h>
#include <rtems/score/isr.h>
#include <rtems/score/object.h>
#include <rtems/score/priority.h>
#include <rtems/score/scheduler.h>
#include <rtems/score/states.h>
#include <rtems/score/sysstate.h>
#include <rtems/score/thread.h>
#include <rtems/score/threadq.h>
#include <rtems/score/userext.h>
#include <rtems/score/wkspace.h>

/*
 *  INTERRUPT LATENCY:
 *    ready chain
 *    select map
 */
void _Thread_Set_state(
  Thread_Control *the_thread,
  States_Control  state
)
{
  ISR_Level      level;

  _ISR_Disable( level );
  if ( !_States_Is_ready( the_thread->current_state ) ) {
    the_thread->current_state =
       _States_Set( state, the_thread->current_state );
    _ISR_Enable( level );
    return;
  }

  the_thread->current_state = state;

  _Scheduler_Block( the_thread );

  _ISR_Enable( level );
}