1 /* Copyright (c) 2011-2013, 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
39 namespace loc_core {
40
41 #define MAX_TASK_COMM_LEN 15
42
LocMsgDestroy(void * msg)43 static void LocMsgDestroy(void* msg) {
44 delete (LocMsg*)msg;
45 }
46
MsgTask(tCreate tCreator,const char * threadName)47 MsgTask::MsgTask(tCreate tCreator, const char* threadName) :
48 mQ(msg_q_init2()), mAssociator(NULL){
49 if (tCreator) {
50 tCreator(threadName, loopMain,
51 (void*)new MsgTask(mQ, mAssociator));
52 } else {
53 createPThread(threadName);
54 }
55 }
56
MsgTask(tAssociate tAssociator,const char * threadName)57 MsgTask::MsgTask(tAssociate tAssociator, const char* threadName) :
58 mQ(msg_q_init2()), mAssociator(tAssociator){
59 createPThread(threadName);
60 }
61
62 inline
MsgTask(const void * q,tAssociate associator)63 MsgTask::MsgTask(const void* q, tAssociate associator) :
64 mQ(q), mAssociator(associator){
65 }
66
~MsgTask()67 MsgTask::~MsgTask() {
68 msg_q_unblock((void*)mQ);
69 }
70
createPThread(const char * threadName)71 void MsgTask::createPThread(const char* threadName) {
72 pthread_attr_t attr;
73 pthread_attr_init(&attr);
74 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
75
76 pthread_t tid;
77 // create the thread here, then if successful
78 // and a name is given, we set the thread name
79 if (!pthread_create(&tid, &attr, loopMain,
80 (void*)new MsgTask(mQ, mAssociator)) &&
81 NULL != threadName) {
82 char lname[MAX_TASK_COMM_LEN+1];
83 memcpy(lname, threadName, MAX_TASK_COMM_LEN);
84 lname[MAX_TASK_COMM_LEN] = 0;
85 pthread_setname_np(tid, lname);
86 }
87 }
88
sendMsg(const LocMsg * msg) const89 void MsgTask::sendMsg(const LocMsg* msg) const {
90 msg_q_snd((void*)mQ, (void*)msg, LocMsgDestroy);
91 }
92
loopMain(void * arg)93 void* MsgTask::loopMain(void* arg) {
94 MsgTask* copy = (MsgTask*)arg;
95
96 // make sure we do not run in background scheduling group
97 set_sched_policy(gettid(), SP_FOREGROUND);
98
99 if (NULL != copy->mAssociator) {
100 copy->mAssociator();
101 }
102
103 LocMsg* msg;
104 int cnt = 0;
105
106 while (1) {
107 LOC_LOGD("MsgTask::loop() %d listening ...\n", cnt++);
108
109 msq_q_err_type result = msg_q_rcv((void*)copy->mQ, (void **)&msg);
110
111 if (eMSG_Q_SUCCESS != result) {
112 LOC_LOGE("%s:%d] fail receiving msg: %s\n", __func__, __LINE__,
113 loc_get_msg_q_status(result));
114 // destroy the Q and exit
115 msg_q_destroy((void**)&(copy->mQ));
116 delete copy;
117 return NULL;
118 }
119
120 msg->log();
121 // there is where each individual msg handling is invoked
122 msg->proc();
123
124 delete msg;
125 }
126
127 delete copy;
128
129 return NULL;
130 }
131
132 }
133