source: rtems/cpukit/rtems/src/regionextend.c @ d78d529

5
Last change on this file since d78d529 was 60a23875, checked in by Sebastian Huber <sebastian.huber@…>, on 04/08/16 at 06:13:49

rtems: Delete Region_Control::length

  • Property mode set to 100644
File size: 1.1 KB
Line 
1/**
2 *  @file
3 *
4 *  @brief RTEMS Extend Region
5 *  @ingroup ClassicRegion
6 */
7
8/*
9 *  COPYRIGHT (c) 1989-2009.
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/rtems/regionimpl.h>
22
23rtems_status_code rtems_region_extend(
24  rtems_id   id,
25  void      *starting_address,
26  uintptr_t  length
27)
28{
29  rtems_status_code  status;
30  Region_Control    *the_region;
31  uintptr_t          amount_extended;
32
33  if ( starting_address == NULL ) {
34    return RTEMS_INVALID_ADDRESS;
35  }
36
37  the_region = _Region_Get_and_lock( id );
38
39  if ( the_region == NULL ) {
40    return RTEMS_INVALID_ID;
41  }
42
43  amount_extended = _Heap_Extend(
44    &the_region->Memory,
45    starting_address,
46    length,
47    0
48  );
49
50  if ( amount_extended > 0 ) {
51    the_region->maximum_segment_size += amount_extended;
52    status = RTEMS_SUCCESSFUL;
53  } else {
54    status = RTEMS_INVALID_ADDRESS;
55  }
56
57  _Region_Unlock( the_region );
58  return status;
59}
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