source: rtems/c/src/exec/score/src/objectget.c @ 08311cc3

4.104.114.84.95
Last change on this file since 08311cc3 was 08311cc3, checked in by Joel Sherrill <joel.sherrill@…>, on 11/17/99 at 17:51:34

Updated copyright notice.

  • Property mode set to 100644
File size: 2.0 KB
Line 
1/*
2 *  Object 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 the file LICENSE in this distribution or at
10 *  http://www.OARcorp.com/rtems/license.html.
11 *
12 *  $Id$
13 */
14
15#include <rtems/system.h>
16#include <rtems/score/address.h>
17#include <rtems/score/chain.h>
18#include <rtems/score/object.h>
19#if defined(RTEMS_MULTIPROCESSING)
20#include <rtems/score/objectmp.h>
21#endif
22#include <rtems/score/thread.h>
23#include <rtems/score/wkspace.h>
24#include <rtems/score/sysstate.h>
25#include <rtems/score/isr.h>
26
27/*PAGE
28 *
29 * _Objects_Get
30 *
31 * This routine sets the object pointer for the given
32 * object id based on the given object information structure.
33 *
34 * Input parameters:
35 *   information - pointer to entry in table for this class
36 *   id          - object id to search for
37 *   location    - address of where to store the location
38 *
39 * Output parameters:
40 *   returns  - address of object if local
41 *   location - one of the following:
42 *                  OBJECTS_ERROR  - invalid object ID
43 *                  OBJECTS_REMOTE - remote object
44 *                  OBJECTS_LOCAL  - local object
45 */
46
47Objects_Control *_Objects_Get(
48  Objects_Information *information,
49  Objects_Id           id,
50  Objects_Locations   *location
51)
52{
53  Objects_Control *the_object;
54  unsigned32       index;
55
56  index = _Objects_Get_index( id );
57
58  if ( information->maximum >= index ) {
59    _Thread_Disable_dispatch();
60    if ( (the_object = _Objects_Get_local_object( information, index )) != NULL ) {
61      *location = OBJECTS_LOCAL;
62      return( the_object );
63    }
64    _Thread_Enable_dispatch();
65    *location = OBJECTS_ERROR;
66    return( NULL );
67  }
68  *location = OBJECTS_ERROR;
69#if defined(RTEMS_MULTIPROCESSING)
70  _Objects_MP_Is_remote(
71    information,
72    _Objects_Build_id( information->the_class, _Objects_Local_node, index ),
73    location,
74    &the_object
75  );
76  return the_object;
77#else
78  return NULL;
79#endif
80}
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