1/* Copyright (c) 2011-2013,2015 The Linux Foundation. All rights reserved.
2 *
3 * Redistribution and use in source and binary forms, with or without
4 * modification, are permitted provided that the following conditions are
5 * met:
6 *     * Redistributions of source code must retain the above copyright
7 *       notice, this list of conditions and the following disclaimer.
8 *     * Redistributions in binary form must reproduce the above
9 *       copyright notice, this list of conditions and the following
10 *       disclaimer in the documentation and/or other materials provided
11 *       with the distribution.
12 *     * Neither the name of The Linux Foundation, nor the names of its
13 *       contributors may be used to endorse or promote products derived
14 *       from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
23 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
25 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
26 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 */
29#define LOG_NDDEBUG 0
30#define LOG_TAG "LocSvc_MsgTask"
31
32#include <cutils/sched_policy.h>
33#include <unistd.h>
34#include <MsgTask.h>
35#include <msg_q.h>
36#include <log_util.h>
37#include <loc_log.h>
38
39static void LocMsgDestroy(void* msg) {
40    delete (LocMsg*)msg;
41}
42
43MsgTask::MsgTask(LocThread::tCreate tCreator,
44                 const char* threadName, bool joinable) :
45    mQ(msg_q_init2()), mThread(new LocThread()) {
46    if (!mThread->start(tCreator, threadName, this, joinable)) {
47        delete mThread;
48        mThread = NULL;
49    }
50}
51
52MsgTask::MsgTask(const char* threadName, bool joinable) :
53    mQ(msg_q_init2()), mThread(new LocThread()) {
54    if (!mThread->start(threadName, this, joinable)) {
55        delete mThread;
56        mThread = NULL;
57    }
58}
59
60MsgTask::~MsgTask() {
61    msg_q_flush((void*)mQ);
62    msg_q_destroy((void**)&mQ);
63}
64
65void MsgTask::destroy() {
66    LocThread* thread = mThread;
67    msg_q_unblock((void*)mQ);
68    if (thread) {
69        mThread = NULL;
70        delete thread;
71    } else {
72        delete this;
73    }
74}
75
76void MsgTask::sendMsg(const LocMsg* msg) const {
77    msg_q_snd((void*)mQ, (void*)msg, LocMsgDestroy);
78}
79
80void MsgTask::prerun() {
81    // make sure we do not run in background scheduling group
82    set_sched_policy(gettid(), SP_FOREGROUND);
83}
84
85bool MsgTask::run() {
86    LOC_LOGV("MsgTask::loop() listening ...\n");
87    LocMsg* msg;
88    msq_q_err_type result = msg_q_rcv((void*)mQ, (void **)&msg);
89    if (eMSG_Q_SUCCESS != result) {
90        LOC_LOGE("%s:%d] fail receiving msg: %s\n", __func__, __LINE__,
91                 loc_get_msg_q_status(result));
92        return false;
93    }
94
95    msg->log();
96    // there is where each individual msg handling is invoked
97    msg->proc();
98
99    delete msg;
100
101    return true;
102}
103