source: rtems/c/src/exec/score/src/objectgetbyindex.c @ 3b4413c0

4.104.114.84.95
Last change on this file since 3b4413c0 was 3b4413c0, checked in by Joel Sherrill <joel.sherrill@…>, on 07/06/00 at 19:09:27

Directly index local table to avoid error check.

  • Property mode set to 100644
File size: 1.8 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_by_index
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 *   index       - object index to check 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_by_index(
48  Objects_Information *information,
49  unsigned32           index,
50  Objects_Locations   *location
51)
52{
53  Objects_Control *the_object;
54
55  if ( information->maximum >= index ) {
56    _Thread_Disable_dispatch();
57    the_object = information->local_table[ index ];
58    if ( the_object ) {
59      *location = OBJECTS_LOCAL;
60      return( the_object );
61    }
62    _Thread_Enable_dispatch();
63    *location = OBJECTS_ERROR;
64    return( NULL );
65  }
66
67  /*
68   *  With just an index, you can't access a remote object.
69   */
70
71  _Thread_Enable_dispatch();
72  *location = OBJECTS_ERROR;
73  return NULL;
74}
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