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
LocMsgDestroy(void * msg)39 static void LocMsgDestroy(void* msg) {
40 delete (LocMsg*)msg;
41 }
42
MsgTask(LocThread::tCreate tCreator,const char * threadName,bool joinable)43 MsgTask::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
MsgTask(const char * threadName,bool joinable)52 MsgTask::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
~MsgTask()60 MsgTask::~MsgTask() {
61 msg_q_flush((void*)mQ);
62 msg_q_destroy((void**)&mQ);
63 }
64
destroy()65 void 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
sendMsg(const LocMsg * msg) const76 void MsgTask::sendMsg(const LocMsg* msg) const {
77 msg_q_snd((void*)mQ, (void*)msg, LocMsgDestroy);
78 }
79
prerun()80 void MsgTask::prerun() {
81 // make sure we do not run in background scheduling group
82 set_sched_policy(gettid(), SP_FOREGROUND);
83 }
84
run()85 bool 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