blob: 0b2b89e612c549027da3525094cd81c9f5f733f5 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/*
* ITRON Message Buffer Manager
*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#include <itron.h>
#include <rtems/itron/msgbuffer.h>
#include <rtems/itron/task.h>
/*
* trcv_mbf - Receive Message from MessageBuffer with Timeout
*/
ER trcv_mbf(
VP msg,
INT *p_msgsz,
ID mbfid,
TMO tmout
)
{
ITRON_Message_buffer_Control *the_message_buffer;
Objects_Locations location;
CORE_message_queue_Status status;
boolean wait;
Watchdog_Interval interval;
interval = 0;
if (tmout == TMO_POL) {
wait = FALSE;
} else {
wait = TRUE;
if (tmout != TMO_FEVR)
interval = TOD_MILLISECONDS_TO_TICKS(tmout);
}
if (wait && _ITRON_Is_in_non_task_state() )
return E_CTX;
if (!p_msgsz || !msg || tmout <= -2)
return E_PAR;
the_message_buffer = _ITRON_Message_buffer_Get(mbfid, &location);
switch (location) {
case OBJECTS_REMOTE:
case OBJECTS_ERROR: /* Multiprocessing not supported */
return _ITRON_Message_buffer_Clarify_get_id_error(mbfid);
case OBJECTS_LOCAL:
_CORE_message_queue_Seize(
&the_message_buffer->message_queue,
the_message_buffer->Object.id,
msg,
p_msgsz,
wait,
interval
);
_Thread_Enable_dispatch();
status = (CORE_message_queue_Status)_Thread_Executing->Wait.return_code;
return
_ITRON_Message_buffer_Translate_core_message_buffer_return_code(status);
}
/*
* If multiprocessing were supported, this is where we would announce
* the existence of the semaphore to the rest of the system.
*/
#if defined(RTEMS_MULTIPROCESSING)
#endif
return E_OK;
}
|
