source: rtems/cpukit/rtems/src/regiongetsegmentsize.c @ e6b31b27

4.115
Last change on this file since e6b31b27 was 63c68cfc, checked in by Joel Sherrill <joel.sherrill@…>, on 05/21/15 at 12:55:15

region*.c: Ensure return_status is set when RTEMS_MULTIPROCESSING is enabled

  • Property mode set to 100644
File size: 1.4 KB
Line 
1/**
2 *  @file
3 *
4 *  @brief RTEMS Get Region Segment Size
5 *  @ingroup ClassicRegion
6 */
7
8/*
9 *  COPYRIGHT (c) 1989-2014.
10 *  On-Line Applications Research Corporation (OAR).
11 *
12 *  The license and distribution terms for this file may be
13 *  found in the file LICENSE in this distribution or at
14 *  http://www.rtems.org/license/LICENSE.
15 */
16
17#if HAVE_CONFIG_H
18#include "config.h"
19#endif
20
21#include <rtems/system.h>
22#include <rtems/rtems/status.h>
23#include <rtems/rtems/support.h>
24#include <rtems/rtems/options.h>
25#include <rtems/rtems/regionimpl.h>
26#include <rtems/score/apimutex.h>
27
28rtems_status_code rtems_region_get_segment_size(
29  rtems_id   id,
30  void      *segment,
31  uintptr_t *size
32)
33{
34  Objects_Locations        location;
35  rtems_status_code        return_status = RTEMS_SUCCESSFUL;
36  Region_Control          *the_region;
37
38  if ( !segment )
39    return RTEMS_INVALID_ADDRESS;
40
41  if ( !size )
42    return RTEMS_INVALID_ADDRESS;
43
44  _RTEMS_Lock_allocator();
45
46    the_region = _Region_Get( id, &location );
47    switch ( location ) {
48
49      case OBJECTS_LOCAL:
50        if ( !_Heap_Size_of_alloc_area( &the_region->Memory, segment, size ) )
51          return_status = RTEMS_INVALID_ADDRESS;
52        break;
53
54#if defined(RTEMS_MULTIPROCESSING)
55      case OBJECTS_REMOTE:        /* this error cannot be returned */
56#endif
57
58      case OBJECTS_ERROR:
59        return_status = RTEMS_INVALID_ID;
60        break;
61    }
62
63  _RTEMS_Unlock_allocator();
64  return return_status;
65}
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