source: rtems/cpukit/itron/src/cre_mbf.c @ 7ded4e37

4.104.114.84.95
Last change on this file since 7ded4e37 was 7ded4e37, checked in by Ralf Corsepius <ralf.corsepius@…>, on 04/15/04 at 04:00:25

Remove unnecessary white spaces.

  • Property mode set to 100644
File size: 1.9 KB
Line 
1/*
2 *  ITRON Message Buffer Manager
3 *
4 *  COPYRIGHT (c) 1989-1999.
5 *  On-Line Applications Research Corporation (OAR).
6 *
7 *  The license and distribution terms for this file may be
8 *  found in the file LICENSE in this distribution or at
9 *  http://www.rtems.com/license/LICENSE.
10 *
11 *  $Id$
12 */
13
14#if HAVE_CONFIG_H
15#include "config.h"
16#endif
17
18#include <rtems/itron.h>
19
20#include <rtems/itron/msgbuffer.h>
21#include <rtems/itron/task.h>
22
23/*
24 *  cre_mbf - Create MessageBuffer
25 */
26
27ER cre_mbf(
28  ID      mbfid,
29  T_CMBF *pk_cmbf
30)
31{
32  CORE_message_queue_Attributes    the_msgq_attributes;
33  ITRON_Message_buffer_Control    *the_message_buffer;
34
35  /*
36   *  Bad pointer to the attributes structure
37   */
38
39  if ( !pk_cmbf )
40    return E_PAR;
41
42  /*
43   *  Bits were set that were note defined.
44   */
45
46  if (pk_cmbf->mbfatr & ~(TA_TPRI))
47    return E_RSATR;
48
49  if (pk_cmbf->bufsz < 0 || pk_cmbf->maxmsz < 0)
50    return E_PAR;
51
52  if (pk_cmbf->bufsz < pk_cmbf->maxmsz)
53    return E_PAR;
54
55  _Thread_Disable_dispatch();             /* prevents deletion */
56
57  the_message_buffer = _ITRON_Message_buffer_Allocate(mbfid);
58  if ( !the_message_buffer ) {
59    _Thread_Enable_dispatch();
60    return _ITRON_Message_buffer_Clarify_allocation_id_error(mbfid);
61  }
62
63  if ( pk_cmbf->mbfatr & TA_TPRI )
64    the_msgq_attributes.discipline = CORE_MESSAGE_QUEUE_DISCIPLINES_PRIORITY;
65  else
66    the_msgq_attributes.discipline = CORE_MESSAGE_QUEUE_DISCIPLINES_FIFO;
67
68  _CORE_message_queue_Initialize(
69    &the_message_buffer->message_queue,
70    &the_msgq_attributes,
71    pk_cmbf->bufsz / pk_cmbf->maxmsz,
72    pk_cmbf->maxmsz
73  );
74
75  _ITRON_Objects_Open( &_ITRON_Message_buffer_Information,
76                       &the_message_buffer->Object );
77
78  /*
79   *  If multiprocessing were supported, this is where we would announce
80   *  the existence of the semaphore to the rest of the system.
81   */
82
83#if defined(RTEMS_MULTIPROCESSING)
84#endif
85
86  _Thread_Enable_dispatch();
87
88  return E_OK;
89}
Note: See TracBrowser for help on using the repository browser.