source: rtems/cpukit/rtems/src/regiongetsegmentsize.c @ d3b72ca3

4.104.115
Last change on this file since d3b72ca3 was d3b72ca3, checked in by Glenn Humphrey <glenn.humphrey@…>, on 12/15/09 at 18:26:42

2009-12-15 Glenn Humphrey <glenn.humphrey@…>

  • rtems/include/rtems/rtems/dpmem.h, rtems/include/rtems/rtems/event.h, rtems/include/rtems/rtems/message.h, rtems/include/rtems/rtems/part.h, rtems/include/rtems/rtems/ratemon.h, rtems/include/rtems/rtems/region.h, rtems/include/rtems/rtems/semmp.h, rtems/include/rtems/rtems/signal.h, rtems/include/rtems/rtems/signalmp.h, rtems/include/rtems/rtems/tasks.h, rtems/include/rtems/rtems/timer.h, rtems/src/dpmemcreate.c, rtems/src/dpmemdelete.c, rtems/src/dpmemexternal2internal.c, rtems/src/dpmemident.c, rtems/src/dpmeminternal2external.c, rtems/src/eventsend.c, rtems/src/msgqbroadcast.c, rtems/src/msgqcreate.c, rtems/src/msgqdelete.c, rtems/src/msgqflush.c, rtems/src/msgqgetnumberpending.c, rtems/src/msgqident.c, rtems/src/msgqreceive.c, rtems/src/msgqsend.c, rtems/src/msgqurgent.c, rtems/src/partcreate.c, rtems/src/partdelete.c, rtems/src/partgetbuffer.c, rtems/src/partident.c, rtems/src/partreturnbuffer.c, rtems/src/ratemoncancel.c, rtems/src/ratemoncreate.c, rtems/src/ratemondelete.c, rtems/src/ratemongetstatistics.c, rtems/src/ratemongetstatus.c, rtems/src/ratemonident.c, rtems/src/ratemonperiod.c, rtems/src/ratemonresetstatistics.c, rtems/src/regioncreate.c, rtems/src/regiondelete.c, rtems/src/regionextend.c, rtems/src/regiongetfreeinfo.c, rtems/src/regiongetinfo.c, rtems/src/regiongetsegment.c, rtems/src/regiongetsegmentsize.c, rtems/src/regionident.c, rtems/src/regionresizesegment.c, rtems/src/regionreturnsegment.c, rtems/src/signalmp.c, rtems/src/signalsend.c, rtems/src/taskcreate.c, rtems/src/taskdelete.c, rtems/src/taskgetnote.c, rtems/src/taskident.c, rtems/src/taskissuspended.c, rtems/src/taskrestart.c, rtems/src/taskresume.c, rtems/src/tasksetnote.c, rtems/src/tasksetpriority.c, rtems/src/tasksuspend.c, rtems/src/timercancel.c, rtems/src/timercreate.c, rtems/src/timerdelete.c, rtems/src/timerfireafter.c, rtems/src/timerfirewhen.c, rtems/src/timergetinfo.c, rtems/src/timerident.c, rtems/src/timerreset.c, rtems/src/timerserverfireafter.c, rtems/src/timerserverfirewhen.c: Changed Objects_Id to rtems_id in the public API.
  • Property mode set to 100644
File size: 1.9 KB
Line 
1/*
2 *  Region Manager
3 *
4 *
5 *  COPYRIGHT (c) 1989-2007.
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/rtems/status.h>
21#include <rtems/rtems/support.h>
22#include <rtems/score/object.h>
23#include <rtems/rtems/options.h>
24#include <rtems/rtems/region.h>
25#include <rtems/score/states.h>
26#include <rtems/score/apimutex.h>
27
28/*PAGE
29 *
30 *  rtems_region_get_segment_size
31 *
32 *  This directive will return the size of the segment indicated
33 *
34 *  Input parameters:
35 *    id         - region id
36 *    segment    - segment address
37 *    size       - pointer to segment size in bytes
38 *
39 *  Output parameters:
40 *    size       - segment size in bytes filled in
41 *    RTEMS_SUCCESSFUL - if successful
42 *    error code - if unsuccessful
43 */
44
45rtems_status_code rtems_region_get_segment_size(
46  rtems_id   id,
47  void      *segment,
48  uintptr_t *size
49)
50{
51  Objects_Locations        location;
52  rtems_status_code        return_status = RTEMS_SUCCESSFUL;
53  register Region_Control *the_region;
54
55  if ( !segment )
56    return RTEMS_INVALID_ADDRESS;
57
58  if ( !size )
59    return RTEMS_INVALID_ADDRESS;
60
61  _RTEMS_Lock_allocator();
62
63    the_region = _Region_Get( id, &location );
64    switch ( location ) {
65
66      case OBJECTS_LOCAL:
67        if ( !_Heap_Size_of_alloc_area( &the_region->Memory, segment, size ) )
68          return_status = RTEMS_INVALID_ADDRESS;
69        break;
70
71#if defined(RTEMS_MULTIPROCESSING)
72      case OBJECTS_REMOTE:        /* this error cannot be returned */
73        break;
74#endif
75
76      case OBJECTS_ERROR:
77        return_status = RTEMS_INVALID_ID;
78        break;
79    }
80
81  _RTEMS_Unlock_allocator();
82  return return_status;
83}
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