source: rtems/cpukit/rtems/src/regiondelete.c @ 17bbadd

Last change on this file since 17bbadd was 17bbadd, checked in by Joel Sherrill <joel.sherrill@…>, on 05/06/04 at 19:20:04

2004-05-06 Joel Sherrill <joel@…>

PR 618/rtems

  • include/rtems/rtems/status.h, src/clockget.c, src/clockset.c, src/dpmemcreate.c, src/dpmemexternal2internal.c, src/dpmeminternal2external.c, src/eventmp.c, src/eventreceive.c, src/eventsend.c, src/msgqbroadcast.c, src/msgqcreate.c, src/msgqflush.c, src/msgqgetnumberpending.c, src/msgqreceive.c, src/msgqsubmit.c, src/partcreate.c, src/partdelete.c, src/partgetbuffer.c, src/ratemoncancel.c, src/ratemoncreate.c, src/ratemondelete.c, src/ratemongetstatus.c, src/ratemonident.c, src/ratemonperiod.c, src/regioncreate.c, src/regiondelete.c, src/regionextend.c, src/regiongetsegment.c, src/regiongetsegmentsize.c, src/regionreturnsegment.c, src/semcreate.c, src/semdelete.c, src/semflush.c, src/semident.c, src/taskcreate.c, src/taskgetnote.c, src/taskmode.c, src/taskrestart.c, src/taskresume.c, src/tasksetnote.c, src/tasksuspend.c, src/taskvariableadd.c, src/taskvariabledelete.c, src/taskvariableget.c, src/taskwakewhen.c, src/timercreate.c, src/timerdelete.c, src/timerfireafter.c, src/timerfirewhen.c, src/timerserverfireafter.c, src/timerserverfirewhen.c: Add NULL checks.
  • Property mode set to 100644
File size: 1.8 KB
Line 
1/*
2 *  Region Manager
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#include <rtems/system.h>
16#include <rtems/rtems/status.h>
17#include <rtems/rtems/support.h>
18#include <rtems/score/object.h>
19#include <rtems/rtems/options.h>
20#include <rtems/rtems/region.h>
21#include <rtems/score/states.h>
22#include <rtems/score/thread.h>
23#include <rtems/score/apimutex.h>
24
25/*PAGE
26 *
27 *  rtems_region_delete
28 *
29 *  This directive allows a thread to delete a region specified by
30 *  the region identifier, provided that none of its segments are
31 *  still allocated.
32 *
33 *  Input parameters:
34 *    id - region id
35 *
36 *  Output parameters:
37 *    RTEMS_SUCCESSFUL - if successful
38 *    error code       - if unsuccessful
39 */
40
41rtems_status_code rtems_region_delete(
42  Objects_Id id
43)
44{
45  register Region_Control *the_region;
46  Objects_Locations        location;
47
48  _RTEMS_Lock_allocator();
49  the_region = _Region_Get( id, &location );
50  switch ( location ) {
51    case OBJECTS_REMOTE:        /* this error cannot be returned */
52      _RTEMS_Unlock_allocator();
53      return RTEMS_INTERNAL_ERROR;
54
55    case OBJECTS_ERROR:
56      _RTEMS_Unlock_allocator();
57      return RTEMS_INVALID_ID;
58
59    case OBJECTS_LOCAL:
60      _Region_Debug_Walk( the_region, 5 );
61      if ( the_region->number_of_used_blocks == 0 ) {
62        _Objects_Close( &_Region_Information, &the_region->Object );
63        _Region_Free( the_region );
64        _RTEMS_Unlock_allocator();
65        return RTEMS_SUCCESSFUL;
66      }
67      _RTEMS_Unlock_allocator();
68      return RTEMS_RESOURCE_IN_USE;
69  }
70
71  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
72}
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