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
81
82
|
/** @addtogroup MCD_MCDIMPL_DAEMON_DEV
* @{
* @file
*
*
* Copyright (c) 2013 TRUSTONIC LIMITED
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the TRUSTONIC LIMITED nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "NotificationQueue.h"
#include <stddef.h>
#include "log.h"
//------------------------------------------------------------------------------
NotificationQueue::NotificationQueue(
notificationQueue_t *i,
notificationQueue_t *o,
uint32_t size
) : in(i), out(o)
{
in->hdr.queueSize = size;
out->hdr.queueSize = size;
}
//------------------------------------------------------------------------------
void NotificationQueue::putNotification(
notification_t *notification
)
{
mutex.lock();
if ((out->hdr.writeCnt - out->hdr.readCnt) < out->hdr.queueSize) {
out->notification[out->hdr.writeCnt & (out->hdr.queueSize - 1)]
= *notification;
out->hdr.writeCnt++;
}
mutex.unlock();
}
//------------------------------------------------------------------------------
notification_t *NotificationQueue::getNotification(
void
)
{
notification_t *ret = NULL;
mutex.lock();
if ((in->hdr.writeCnt - in->hdr.readCnt) > 0) {
ret = &(in->notification[in->hdr.readCnt & (in->hdr.queueSize - 1)]);
in->hdr.readCnt++;
}
mutex.unlock();
return ret;
}
/** @} */
|