source: rtems/cpukit/score/src/objectallocatebyindex.c @ b72e847b

4.8
Last change on this file since b72e847b was bd029d87, checked in by Joel Sherrill <joel.sherrill@…>, on Aug 4, 2008 at 7:49:33 PM

2008-08-04 Joel Sherrill <joel.sherrill@…>

PR 1265/cpukit

  • score/include/rtems/score/object.h, score/src/objectallocatebyindex.c: Rename index argument to avoid warning when rtems.h and string.h are included at the same time by user code.
  • Property mode set to 100644
File size: 1.7 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.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/address.h>
21#include <rtems/score/chain.h>
22#include <rtems/score/object.h>
23#if defined(RTEMS_MULTIPROCESSING)
24#include <rtems/score/objectmp.h>
25#endif
26#include <rtems/score/thread.h>
27#include <rtems/score/wkspace.h>
28#include <rtems/score/sysstate.h>
29#include <rtems/score/isr.h>
30
31/*PAGE
32 *
33 *  _Objects_Allocate_by_index
34 *
35 *  DESCRIPTION:
36 *
37 *  This function allocates the object control block
38 *  specified by the index from the inactive chain of
39 *  free object control blocks.
40 */
41
42Objects_Control *_Objects_Allocate_by_index(
43  Objects_Information *information,
44  uint16_t             the_index,
45  uint16_t             sizeof_control
46)
47{
48  Objects_Control *the_object;
49
50  if ( the_index && information->maximum >= the_index ) {
51    the_object = information->local_table[ the_index ];
52    if ( the_object )
53      return NULL;
54
55    /* XXX
56     *  This whole section of code needs to be addressed.
57     *    +  The 0 should be dealt with more properly so we can autoextend.
58     *    +  The pointer arithmetic is probably too expensive.
59     *    +  etc.
60     */
61
62    the_object = (Objects_Control *) _Addresses_Add_offset(
63      information->object_blocks[ 0 ],
64      (sizeof_control * (the_index - 1))
65    );
66    _Chain_Extract( &the_object->Node );
67
68    return the_object;
69  }
70
71  /*
72   *  Autoextend will have to be thought out as it applies
73   *  to user assigned indices.
74   */
75
76  return NULL;
77}
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