source: rtems/cpukit/score/src/threadget.c @ 4fc370e

4.115
Last change on this file since 4fc370e was 4fc370e, checked in by Sebastian Huber <sebastian.huber@…>, on Jun 5, 2013 at 10:08:23 AM

score: Move thread dispatch content to new file

Move thread dispatch declarations and inline functions to new header
<rtems/score/threaddispatch.h> to make it independent of the
Thread_Control structure. This avoids a cyclic dependency in case
thread dispatch functions are used for the object implementation.

  • Property mode set to 100644
File size: 2.1 KB
Line 
1/**
2 * @file
3 *
4 * @brief Maps Thread IDs to TCB Pointer
5 *
6 * @ingroup ScoreThread
7 */
8
9/*
10 *  COPYRIGHT (c) 1989-2011.
11 *  On-Line Applications Research Corporation (OAR).
12 *
13 *  The license and distribution terms for this file may be
14 *  found in the file LICENSE in this distribution or at
15 *  http://www.rtems.com/license/LICENSE.
16 */
17
18#if HAVE_CONFIG_H
19#include "config.h"
20#endif
21
22#include <rtems/system.h>
23#include <rtems/score/apiext.h>
24#include <rtems/score/context.h>
25#include <rtems/score/interr.h>
26#include <rtems/score/isr.h>
27#include <rtems/score/object.h>
28#include <rtems/score/priority.h>
29#include <rtems/score/states.h>
30#include <rtems/score/sysstate.h>
31#include <rtems/score/thread.h>
32#include <rtems/score/threaddispatch.h>
33#include <rtems/score/threadq.h>
34
35Thread_Control *_Thread_Get (
36  Objects_Id         id,
37  Objects_Locations *location
38)
39{
40  uint32_t             the_api;
41  uint32_t             the_class;
42  Objects_Information **api_information;
43  Objects_Information *information;
44  Thread_Control      *tp = (Thread_Control *) 0;
45
46  if ( _Objects_Are_ids_equal( id, OBJECTS_ID_OF_SELF ) ) {
47    _Thread_Disable_dispatch();
48    *location = OBJECTS_LOCAL;
49    tp = _Thread_Executing;
50    goto done;
51  }
52
53  the_api = _Objects_Get_API( id );
54  if ( !_Objects_Is_api_valid( the_api ) ) {
55    *location = OBJECTS_ERROR;
56    goto done;
57  }
58
59  the_class = _Objects_Get_class( id );
60  if ( the_class != 1 ) {       /* threads are always first class :) */
61    *location = OBJECTS_ERROR;
62    goto done;
63  }
64
65  api_information = _Objects_Information_table[ the_api ];
66  /*
67   *  There is no way for this to happen if POSIX is enabled.  But there
68   *  is actually a test case in sp43 for this which trips it whether or
69   *  not POSIX is enabled.  So in the interest of safety, this is left
70   *  on in all configurations.
71   */
72  if ( !api_information ) {
73    *location = OBJECTS_ERROR;
74    goto done;
75  }
76
77  information = api_information[ the_class ];
78  if ( !information ) {
79    *location = OBJECTS_ERROR;
80    goto done;
81  }
82
83  tp = (Thread_Control *) _Objects_Get( information, id, location );
84
85done:
86  return tp;
87}
88
Note: See TracBrowser for help on using the repository browser.