source: rtems/cpukit/posix/src/mqueue.c @ f22ebf0

4.104.114.84.95
Last change on this file since f22ebf0 was 53092d1, checked in by Joel Sherrill <joel.sherrill@…>, on 04/26/02 at 23:39:01

2001-04-26 Joel Sherrill <joel@…>

  • include/rtems/posix/mqueue.h, inline/rtems/posix/mqueue.inl, src/mqueue.c, src/mqueueclose.c, src/mqueuecreatesupp.c, src/mqueuegetattr.c, src/mqueuenotify.c, src/mqueueopen.c, src/mqueuerecvsupp.c, src/mqueuesendsupp.c, src/mqueuesetattr.c: Per PR81 reworked to add a message queue descriptor separate from the underlying message queue. This allows non-blocking to follow the "open" not the underlying queue.
  • Property mode set to 100644
File size: 1.8 KB
Line 
1/*
2 *  NOTE:  The structure of the routines is identical to that of POSIX
3 *         Message_queues to leave the option of having unnamed message
4 *         queues at a future date.  They are currently not part of the
5 *         POSIX standard but unnamed message_queues are.  This is also
6 *         the reason for the apparently unnecessary tracking of
7 *         the process_shared attribute.  [In addition to the fact that
8 *         it would be trivial to add pshared to the mq_attr structure
9 *         and have process private message queues.]
10 *
11 *         This code ignores the O_RDONLY/O_WRONLY/O_RDWR flag at open
12 *         time.
13 *
14 *  $Id$
15 */
16
17#if HAVE_CONFIG_H
18#include "config.h"
19#endif
20
21#include <stdarg.h>
22
23#include <pthread.h>
24#include <limits.h>
25#include <errno.h>
26#include <fcntl.h>
27#include <mqueue.h>
28
29#include <rtems/system.h>
30#include <rtems/score/watchdog.h>
31#include <rtems/seterr.h>
32#include <rtems/posix/mqueue.h>
33#include <rtems/posix/time.h>
34
35/*PAGE
36 *
37 *  _POSIX_Message_queue_Manager_initialization
38 *
39 *  This routine initializes all message_queue manager related data structures.
40 *
41 *  Input parameters:
42 *    maximum_message_queues - maximum configured message_queues
43 *
44 *  Output parameters:  NONE
45 */
46 
47void _POSIX_Message_queue_Manager_initialization(
48  unsigned32 maximum_message_queues
49)
50{
51  _Objects_Initialize_information(
52    &_POSIX_Message_queue_Information,
53    OBJECTS_POSIX_MESSAGE_QUEUES,
54    TRUE,
55    maximum_message_queues,
56    sizeof( POSIX_Message_queue_Control ),
57    TRUE,
58    _POSIX_PATH_MAX,
59    FALSE
60  );
61  _Objects_Initialize_information(
62    &_POSIX_Message_queue_Information_fds,
63    OBJECTS_POSIX_MESSAGE_QUEUE_FDS,
64    FALSE,
65    maximum_message_queues,
66    sizeof( POSIX_Message_queue_Control_fd ),
67    FALSE,
68    0,
69    FALSE
70  );
71}
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