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/* Copyright (c) 2011-2013, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of The Linux Foundation, 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 "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 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.
*
*/
#define LOG_NDDEBUG 0
#define LOG_TAG "LocSvc_MsgTask"
#include <cutils/sched_policy.h>
#include <unistd.h>
#include <MsgTask.h>
#include <msg_q.h>
#include <log_util.h>
#include <loc_log.h>
namespace loc_core {
#define MAX_TASK_COMM_LEN 15
static void LocMsgDestroy(void* msg) {
delete (LocMsg*)msg;
}
MsgTask::MsgTask(tCreate tCreator, const char* threadName) :
mQ(msg_q_init2()), mAssociator(NULL){
if (tCreator) {
tCreator(threadName, loopMain,
(void*)new MsgTask(mQ, mAssociator));
} else {
createPThread(threadName);
}
}
MsgTask::MsgTask(tAssociate tAssociator, const char* threadName) :
mQ(msg_q_init2()), mAssociator(tAssociator){
createPThread(threadName);
}
inline
MsgTask::MsgTask(const void* q, tAssociate associator) :
mQ(q), mAssociator(associator){
}
MsgTask::~MsgTask() {
msg_q_unblock((void*)mQ);
}
void MsgTask::associate(tAssociate tAssociator) const {
struct LocAssociateMsg : public LocMsg {
tAssociate mAssociator;
inline LocAssociateMsg(tAssociate associator) :
LocMsg(), mAssociator(associator) {}
inline virtual void proc() const {
if (mAssociator) {
LOC_LOGD("MsgTask::associate");
mAssociator();
}
}
};
sendMsg(new LocAssociateMsg(tAssociator));
}
void MsgTask::createPThread(const char* threadName) {
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
pthread_t tid;
// create the thread here, then if successful
// and a name is given, we set the thread name
if (!pthread_create(&tid, &attr, loopMain,
(void*)new MsgTask(mQ, mAssociator)) &&
NULL != threadName) {
char lname[MAX_TASK_COMM_LEN+1];
memcpy(lname, threadName, MAX_TASK_COMM_LEN);
lname[MAX_TASK_COMM_LEN] = 0;
pthread_setname_np(tid, lname);
}
}
void MsgTask::sendMsg(const LocMsg* msg) const {
msg_q_snd((void*)mQ, (void*)msg, LocMsgDestroy);
}
void* MsgTask::loopMain(void* arg) {
MsgTask* copy = (MsgTask*)arg;
// make sure we do not run in background scheduling group
set_sched_policy(gettid(), SP_FOREGROUND);
if (NULL != copy->mAssociator) {
copy->mAssociator();
}
LocMsg* msg;
int cnt = 0;
while (1) {
LOC_LOGD("MsgTask::loop() %d listening ...\n", cnt++);
msq_q_err_type result = msg_q_rcv((void*)copy->mQ, (void **)&msg);
if (eMSG_Q_SUCCESS != result) {
LOC_LOGE("%s:%d] fail receiving msg: %s\n", __func__, __LINE__,
loc_get_msg_q_status(result));
// destroy the Q and exit
msg_q_destroy((void**)&(copy->mQ));
delete copy;
return NULL;
}
msg->log();
// there is where each individual msg handling is invoked
msg->proc();
delete msg;
}
delete copy;
return NULL;
}
}
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