source: rtems/cpukit/rtems/src/partgetbuffer.c @ d66ca67

4.104.114.84.95
Last change on this file since d66ca67 was 08311cc3, checked in by Joel Sherrill <joel.sherrill@…>, on 11/17/99 at 17:51:34

Updated copyright notice.

  • Property mode set to 100644
File size: 1.9 KB
Line 
1/*
2 *  Partition 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.OARcorp.com/rtems/license.html.
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/address.h>
19#include <rtems/score/object.h>
20#include <rtems/rtems/part.h>
21#include <rtems/score/thread.h>
22#include <rtems/score/sysstate.h>
23
24/*PAGE
25 *
26 *  rtems_partition_get_buffer
27 *
28 *  This directive will obtain a buffer from a buffer partition.
29 *
30 *  Input parameters:
31 *    id     - partition id
32 *    buffer - pointer to buffer address
33 *
34 *  Output parameters:
35 *    buffer            - pointer to buffer address filled in
36 *    RTEMS_SUCCESSFUL - if successful
37 *    error code        - if unsuccessful
38 */
39
40rtems_status_code rtems_partition_get_buffer(
41  Objects_Id   id,
42  void       **buffer
43)
44{
45  register Partition_Control *the_partition;
46  Objects_Locations           location;
47  void                       *the_buffer;
48
49  the_partition = _Partition_Get( id, &location );
50  switch ( location ) {
51    case OBJECTS_REMOTE:
52#if defined(RTEMS_MULTIPROCESSING)
53      _Thread_Executing->Wait.return_argument = buffer;
54      return(
55        _Partition_MP_Send_request_packet(
56          PARTITION_MP_GET_BUFFER_REQUEST,
57          id,
58          0           /* Not used */
59        )
60      );
61#endif
62
63    case OBJECTS_ERROR:
64      return RTEMS_INVALID_ID;
65
66    case OBJECTS_LOCAL:
67      the_buffer = _Partition_Allocate_buffer( the_partition );
68      if ( the_buffer ) {
69        the_partition->number_of_used_blocks += 1;
70        _Thread_Enable_dispatch();
71        *buffer = the_buffer;
72        return RTEMS_SUCCESSFUL;
73      }
74      _Thread_Enable_dispatch();
75      return RTEMS_UNSATISFIED;
76  }
77
78  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
79}
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