source: rtems/cpukit/score/src/threadsetstate.c @ aae7f1a1

4.104.11
Last change on this file since aae7f1a1 was aae7f1a1, checked in by Ralf Corsepius <ralf.corsepius@…>, on Dec 22, 2008 at 5:52:32 AM

Eliminate TRUE/FALSE.

  • Property mode set to 100644
File size: 1.9 KB
Line 
1/*
2 *  Thread Handler
3 *
4 *
5 *  COPYRIGHT (c) 1989-1999.
6 *  On-Line Applications Research Corporation (OAR).
7 *
8 *  The license and distribution terms for this file may be
9 *  found in found in the file LICENSE in this distribution or at
10 *  http://www.rtems.com/license/LICENSE.
11 *
12 *  $Id$
13 */
14
15#if HAVE_CONFIG_H
16#include "config.h"
17#endif
18
19#include <rtems/system.h>
20#include <rtems/score/apiext.h>
21#include <rtems/score/context.h>
22#include <rtems/score/interr.h>
23#include <rtems/score/isr.h>
24#include <rtems/score/object.h>
25#include <rtems/score/priority.h>
26#include <rtems/score/states.h>
27#include <rtems/score/sysstate.h>
28#include <rtems/score/thread.h>
29#include <rtems/score/threadq.h>
30#include <rtems/score/userext.h>
31#include <rtems/score/wkspace.h>
32
33/*PAGE
34 *
35 * _Thread_Set_state
36 *
37 * This kernel routine sets the requested state in the THREAD.  The
38 * THREAD chain is adjusted if necessary.
39 *
40 * Input parameters:
41 *   the_thread   - pointer to thread control block
42 *   state - state to be set
43 *
44 * Output parameters:  NONE
45 *
46 *  INTERRUPT LATENCY:
47 *    ready chain
48 *    select map
49 */
50
51void _Thread_Set_state(
52  Thread_Control *the_thread,
53  States_Control  state
54)
55{
56  ISR_Level      level;
57  Chain_Control *ready;
58
59  ready = the_thread->ready;
60  _ISR_Disable( level );
61  if ( !_States_Is_ready( the_thread->current_state ) ) {
62    the_thread->current_state =
63       _States_Set( state, the_thread->current_state );
64    _ISR_Enable( level );
65    return;
66  }
67
68  the_thread->current_state = state;
69
70  if ( _Chain_Has_only_one_node( ready ) ) {
71
72    _Chain_Initialize_empty( ready );
73    _Priority_Remove_from_bit_map( &the_thread->Priority_map );
74
75  } else
76    _Chain_Extract_unprotected( &the_thread->Object.Node );
77
78  _ISR_Flash( level );
79
80  if ( _Thread_Is_heir( the_thread ) )
81     _Thread_Calculate_heir();
82
83  if ( _Thread_Is_executing( the_thread ) )
84    _Context_Switch_necessary = true;
85
86  _ISR_Enable( level );
87}
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