blob: 427b2c0bc05e363a189eba9245bb2a5d1411fa49 (
plain)
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
|
/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/trace/daemonif.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* COPYRIGHT International Business Machines Corp. 2012,2014 */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
#include "daemonif.H"
namespace TRACE
{
DaemonIf::DaemonIf() :
iv_queue(msg_q_create()), iv_signalled(0), iv_running(false)
{
}
DaemonIf::~DaemonIf()
{
if (iv_running)
{
msg_t* msg = msg_allocate();
msg->type = TRACE_DAEMON_SHUTDOWN;
msg_sendrecv(iv_queue, msg);
msg_free(msg);
}
msg_q_destroy(iv_queue);
}
void DaemonIf::signal(bool i_blocking)
{
// Atomically increment the signal count.
uint16_t count = __sync_fetch_and_add(&iv_signalled, 1);
// Send a message if this is the first, or requested to be blocking.
if ((count == 0) || (i_blocking))
{
msg_t* msg = msg_allocate();
msg->type = TRACE_DAEMON_SIGNAL;
if (i_blocking)
{
msg_sendrecv(iv_queue, msg); // sync message due to 'blocking'.
}
else
{
msg_send(iv_queue, msg); // async message request.
}
}
}
}
|
