668 lines
21 KiB
C++
668 lines
21 KiB
C++
/* Copyright (c) 2012-2019, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation, nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#define LOG_NDEBUG 0
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#define LOG_TAG "LocSvc_Agps"
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#include <Agps.h>
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#include <loc_pla.h>
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#include <ContextBase.h>
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#include <loc_timer.h>
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#include <inttypes.h>
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/* --------------------------------------------------------------------
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* AGPS State Machine Methods
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* -------------------------------------------------------------------*/
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void AgpsStateMachine::processAgpsEvent(AgpsEvent event){
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LOC_LOGD("processAgpsEvent(): SM %p, Event %d, State %d",
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this, event, mState);
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switch (event) {
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case AGPS_EVENT_SUBSCRIBE:
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processAgpsEventSubscribe();
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break;
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case AGPS_EVENT_UNSUBSCRIBE:
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processAgpsEventUnsubscribe();
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break;
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case AGPS_EVENT_GRANTED:
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processAgpsEventGranted();
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break;
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case AGPS_EVENT_RELEASED:
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processAgpsEventReleased();
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break;
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case AGPS_EVENT_DENIED:
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processAgpsEventDenied();
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break;
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default:
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LOC_LOGE("Invalid Loc Agps Event");
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}
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}
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void AgpsStateMachine::processAgpsEventSubscribe(){
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switch (mState) {
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case AGPS_STATE_RELEASED:
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/* Add subscriber to list
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* No notifications until we get RSRC_GRANTED */
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addSubscriber(mCurrentSubscriber);
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requestOrReleaseDataConn(true);
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transitionState(AGPS_STATE_PENDING);
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break;
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case AGPS_STATE_PENDING:
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/* Already requested for data connection,
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* do nothing until we get RSRC_GRANTED event;
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* Just add this subscriber to the list, for notifications */
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addSubscriber(mCurrentSubscriber);
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break;
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case AGPS_STATE_ACQUIRED:
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/* We already have the data connection setup,
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* Notify current subscriber with GRANTED event,
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* And add it to the subscriber list for further notifications. */
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notifyEventToSubscriber(AGPS_EVENT_GRANTED, mCurrentSubscriber, false);
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addSubscriber(mCurrentSubscriber);
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break;
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case AGPS_STATE_RELEASING:
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addSubscriber(mCurrentSubscriber);
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break;
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default:
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LOC_LOGE("Invalid state: %d", mState);
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}
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}
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void AgpsStateMachine::processAgpsEventUnsubscribe(){
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switch (mState) {
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case AGPS_STATE_RELEASED:
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notifyEventToSubscriber(
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AGPS_EVENT_UNSUBSCRIBE, mCurrentSubscriber, false);
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break;
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case AGPS_STATE_PENDING:
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case AGPS_STATE_ACQUIRED:
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/* If the subscriber wishes to wait for connection close,
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* before being removed from list, move to inactive state
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* and notify */
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if (mCurrentSubscriber->mWaitForCloseComplete) {
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mCurrentSubscriber->mIsInactive = true;
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}
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else {
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/* Notify only current subscriber and then delete it from
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* subscriberList */
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notifyEventToSubscriber(
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AGPS_EVENT_UNSUBSCRIBE, mCurrentSubscriber, true);
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}
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/* If no subscribers in list, release data connection */
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if (mSubscriberList.empty()) {
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transitionState(AGPS_STATE_RELEASED);
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requestOrReleaseDataConn(false);
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}
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/* Some subscribers in list, but all inactive;
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* Release data connection */
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else if(!anyActiveSubscribers()) {
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transitionState(AGPS_STATE_RELEASING);
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requestOrReleaseDataConn(false);
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}
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break;
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case AGPS_STATE_RELEASING:
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/* If the subscriber wishes to wait for connection close,
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* before being removed from list, move to inactive state
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* and notify */
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if (mCurrentSubscriber->mWaitForCloseComplete) {
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mCurrentSubscriber->mIsInactive = true;
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}
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else {
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/* Notify only current subscriber and then delete it from
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* subscriberList */
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notifyEventToSubscriber(
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AGPS_EVENT_UNSUBSCRIBE, mCurrentSubscriber, true);
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}
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/* If no subscribers in list, just move the state.
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* Request for releasing data connection should already have been
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* sent */
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if (mSubscriberList.empty()) {
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transitionState(AGPS_STATE_RELEASED);
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}
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break;
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default:
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LOC_LOGE("Invalid state: %d", mState);
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}
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}
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void AgpsStateMachine::processAgpsEventGranted(){
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switch (mState) {
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case AGPS_STATE_RELEASED:
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case AGPS_STATE_ACQUIRED:
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case AGPS_STATE_RELEASING:
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LOC_LOGE("Unexpected event GRANTED in state %d", mState);
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break;
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case AGPS_STATE_PENDING:
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// Move to acquired state
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transitionState(AGPS_STATE_ACQUIRED);
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notifyAllSubscribers(
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AGPS_EVENT_GRANTED, false,
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AGPS_NOTIFICATION_TYPE_FOR_ACTIVE_SUBSCRIBERS);
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break;
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default:
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LOC_LOGE("Invalid state: %d", mState);
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}
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}
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void AgpsStateMachine::processAgpsEventReleased(){
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switch (mState) {
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case AGPS_STATE_RELEASED:
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/* Subscriber list should be empty if we are in released state */
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if (!mSubscriberList.empty()) {
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LOC_LOGE("Unexpected event RELEASED in RELEASED state");
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}
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break;
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case AGPS_STATE_ACQUIRED:
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/* Force release received */
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LOC_LOGW("Force RELEASED event in ACQUIRED state");
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transitionState(AGPS_STATE_RELEASED);
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notifyAllSubscribers(
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AGPS_EVENT_RELEASED, true,
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AGPS_NOTIFICATION_TYPE_FOR_ALL_SUBSCRIBERS);
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break;
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case AGPS_STATE_RELEASING:
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/* Notify all inactive subscribers about the event */
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notifyAllSubscribers(
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AGPS_EVENT_RELEASED, true,
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AGPS_NOTIFICATION_TYPE_FOR_INACTIVE_SUBSCRIBERS);
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/* If we have active subscribers now, they must be waiting for
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* data conn setup */
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if (anyActiveSubscribers()) {
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transitionState(AGPS_STATE_PENDING);
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requestOrReleaseDataConn(true);
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}
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/* No active subscribers, move to released state */
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else {
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transitionState(AGPS_STATE_RELEASED);
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}
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break;
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case AGPS_STATE_PENDING:
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/* NOOP */
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break;
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default:
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LOC_LOGE("Invalid state: %d", mState);
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}
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}
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void AgpsStateMachine::processAgpsEventDenied(){
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switch (mState) {
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case AGPS_STATE_RELEASED:
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LOC_LOGE("Unexpected event DENIED in state %d", mState);
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break;
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case AGPS_STATE_ACQUIRED:
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/* NOOP */
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break;
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case AGPS_STATE_RELEASING:
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/* Notify all inactive subscribers about the event */
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notifyAllSubscribers(
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AGPS_EVENT_RELEASED, true,
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AGPS_NOTIFICATION_TYPE_FOR_INACTIVE_SUBSCRIBERS);
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/* If we have active subscribers now, they must be waiting for
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* data conn setup */
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if (anyActiveSubscribers()) {
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transitionState(AGPS_STATE_PENDING);
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requestOrReleaseDataConn(true);
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}
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/* No active subscribers, move to released state */
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else {
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transitionState(AGPS_STATE_RELEASED);
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}
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break;
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case AGPS_STATE_PENDING:
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transitionState(AGPS_STATE_RELEASED);
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notifyAllSubscribers(
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AGPS_EVENT_DENIED, true,
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AGPS_NOTIFICATION_TYPE_FOR_ALL_SUBSCRIBERS);
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break;
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default:
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LOC_LOGE("Invalid state: %d", mState);
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}
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}
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/* Request or Release data connection
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* bool request :
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* true = Request data connection
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* false = Release data connection */
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void AgpsStateMachine::requestOrReleaseDataConn(bool request){
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AGnssExtStatusIpV4 nifRequest;
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memset(&nifRequest, 0, sizeof(nifRequest));
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nifRequest.type = mAgpsType;
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nifRequest.apnTypeMask = mApnTypeMask;
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if (request) {
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LOC_LOGD("AGPS Data Conn Request mAgpsType=%d mApnTypeMask=0x%X",
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mAgpsType, mApnTypeMask);
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nifRequest.status = LOC_GPS_REQUEST_AGPS_DATA_CONN;
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}
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else{
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LOC_LOGD("AGPS Data Conn Release mAgpsType=%d mApnTypeMask=0x%X",
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mAgpsType, mApnTypeMask);
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nifRequest.status = LOC_GPS_RELEASE_AGPS_DATA_CONN;
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}
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mAgpsManager->mFrameworkStatusV4Cb(nifRequest);
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}
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void AgpsStateMachine::notifyAllSubscribers(
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AgpsEvent event, bool deleteSubscriberPostNotify,
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AgpsNotificationType notificationType){
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LOC_LOGD("notifyAllSubscribers(): "
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"SM %p, Event %d Delete %d Notification Type %d",
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this, event, deleteSubscriberPostNotify, notificationType);
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std::list<AgpsSubscriber*>::const_iterator it = mSubscriberList.begin();
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while ( it != mSubscriberList.end() ) {
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AgpsSubscriber* subscriber = *it;
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if (notificationType == AGPS_NOTIFICATION_TYPE_FOR_ALL_SUBSCRIBERS ||
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(notificationType == AGPS_NOTIFICATION_TYPE_FOR_INACTIVE_SUBSCRIBERS &&
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subscriber->mIsInactive) ||
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(notificationType == AGPS_NOTIFICATION_TYPE_FOR_ACTIVE_SUBSCRIBERS &&
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!subscriber->mIsInactive)) {
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/* Deleting via this call would require another traversal
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* through subscriber list, inefficient; hence pass in false*/
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notifyEventToSubscriber(event, subscriber, false);
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if (deleteSubscriberPostNotify) {
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it = mSubscriberList.erase(it);
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delete subscriber;
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} else {
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it++;
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}
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} else {
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it++;
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}
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}
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}
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void AgpsStateMachine::notifyEventToSubscriber(
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AgpsEvent event, AgpsSubscriber* subscriberToNotify,
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bool deleteSubscriberPostNotify) {
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LOC_LOGD("notifyEventToSubscriber(): "
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"SM %p, Event %d Subscriber %p Delete %d",
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this, event, subscriberToNotify, deleteSubscriberPostNotify);
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switch (event) {
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case AGPS_EVENT_GRANTED:
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mAgpsManager->mAtlOpenStatusCb(
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subscriberToNotify->mConnHandle, 1, getAPN(), getAPNLen(),
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getBearer(), mAgpsType, mApnTypeMask);
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break;
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case AGPS_EVENT_DENIED:
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mAgpsManager->mAtlOpenStatusCb(
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subscriberToNotify->mConnHandle, 0, getAPN(), getAPNLen(),
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getBearer(), mAgpsType, mApnTypeMask);
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break;
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case AGPS_EVENT_UNSUBSCRIBE:
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case AGPS_EVENT_RELEASED:
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mAgpsManager->mAtlCloseStatusCb(subscriberToNotify->mConnHandle, 1);
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break;
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default:
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LOC_LOGE("Invalid event %d", event);
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}
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/* Search this subscriber in list and delete */
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if (deleteSubscriberPostNotify) {
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deleteSubscriber(subscriberToNotify);
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}
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}
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void AgpsStateMachine::transitionState(AgpsState newState){
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LOC_LOGD("transitionState(): SM %p, old %d, new %d",
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this, mState, newState);
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mState = newState;
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// notify state transitions to all subscribers ?
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}
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void AgpsStateMachine::addSubscriber(AgpsSubscriber* subscriberToAdd){
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LOC_LOGD("addSubscriber(): SM %p, Subscriber %p",
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this, subscriberToAdd);
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// Check if subscriber is already present in the current list
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// If not, then add
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std::list<AgpsSubscriber*>::const_iterator it = mSubscriberList.begin();
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for (; it != mSubscriberList.end(); it++) {
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AgpsSubscriber* subscriber = *it;
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if (subscriber->equals(subscriberToAdd)) {
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LOC_LOGE("Subscriber already in list");
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return;
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}
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}
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AgpsSubscriber* cloned = subscriberToAdd->clone();
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LOC_LOGD("addSubscriber(): cloned subscriber: %p", cloned);
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mSubscriberList.push_back(cloned);
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}
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void AgpsStateMachine::deleteSubscriber(AgpsSubscriber* subscriberToDelete){
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LOC_LOGD("deleteSubscriber(): SM %p, Subscriber %p",
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this, subscriberToDelete);
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std::list<AgpsSubscriber*>::const_iterator it = mSubscriberList.begin();
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while ( it != mSubscriberList.end() ) {
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AgpsSubscriber* subscriber = *it;
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if (subscriber && subscriber->equals(subscriberToDelete)) {
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it = mSubscriberList.erase(it);
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delete subscriber;
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} else {
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it++;
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}
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}
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}
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bool AgpsStateMachine::anyActiveSubscribers(){
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std::list<AgpsSubscriber*>::const_iterator it = mSubscriberList.begin();
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for (; it != mSubscriberList.end(); it++) {
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AgpsSubscriber* subscriber = *it;
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if (!subscriber->mIsInactive) {
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return true;
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}
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}
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return false;
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}
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void AgpsStateMachine::setAPN(char* apn, unsigned int len){
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if (NULL != mAPN) {
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delete mAPN;
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mAPN = NULL;
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}
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if (NULL == apn || len <= 0 || len > MAX_APN_LEN || strlen(apn) != len) {
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LOC_LOGD("Invalid apn len (%d) or null apn", len);
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mAPN = NULL;
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mAPNLen = 0;
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} else {
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mAPN = new char[len+1];
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if (NULL != mAPN) {
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memcpy(mAPN, apn, len);
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mAPN[len] = '\0';
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mAPNLen = len;
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}
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}
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}
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AgpsSubscriber* AgpsStateMachine::getSubscriber(int connHandle){
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/* Go over the subscriber list */
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std::list<AgpsSubscriber*>::const_iterator it = mSubscriberList.begin();
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for (; it != mSubscriberList.end(); it++) {
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AgpsSubscriber* subscriber = *it;
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if (subscriber->mConnHandle == connHandle) {
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return subscriber;
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}
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}
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/* Not found, return NULL */
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return NULL;
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}
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AgpsSubscriber* AgpsStateMachine::getFirstSubscriber(bool isInactive){
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/* Go over the subscriber list */
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std::list<AgpsSubscriber*>::const_iterator it = mSubscriberList.begin();
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for (; it != mSubscriberList.end(); it++) {
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AgpsSubscriber* subscriber = *it;
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if(subscriber->mIsInactive == isInactive) {
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return subscriber;
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}
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}
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/* Not found, return NULL */
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return NULL;
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}
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void AgpsStateMachine::dropAllSubscribers(){
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LOC_LOGD("dropAllSubscribers(): SM %p", this);
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/* Go over the subscriber list */
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std::list<AgpsSubscriber*>::const_iterator it = mSubscriberList.begin();
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while ( it != mSubscriberList.end() ) {
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AgpsSubscriber* subscriber = *it;
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it = mSubscriberList.erase(it);
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delete subscriber;
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}
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}
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/* --------------------------------------------------------------------
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* Loc AGPS Manager Methods
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* -------------------------------------------------------------------*/
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/* CREATE AGPS STATE MACHINES
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* Must be invoked in Msg Handler context */
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void AgpsManager::createAgpsStateMachines() {
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LOC_LOGD("AgpsManager::createAgpsStateMachines");
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bool agpsCapable =
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((loc_core::ContextBase::mGps_conf.CAPABILITIES & LOC_GPS_CAPABILITY_MSA) ||
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(loc_core::ContextBase::mGps_conf.CAPABILITIES & LOC_GPS_CAPABILITY_MSB));
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if (NULL == mInternetNif) {
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mInternetNif = new AgpsStateMachine(this, LOC_AGPS_TYPE_WWAN_ANY);
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LOC_LOGD("Internet NIF: %p", mInternetNif);
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}
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if (agpsCapable) {
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if (NULL == mAgnssNif) {
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mAgnssNif = new AgpsStateMachine(this, LOC_AGPS_TYPE_SUPL);
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LOC_LOGD("AGNSS NIF: %p", mAgnssNif);
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}
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}
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}
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AgpsStateMachine* AgpsManager::getAgpsStateMachine(AGpsExtType agpsType) {
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LOC_LOGD("AgpsManager::getAgpsStateMachine(): agpsType %d", agpsType);
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switch (agpsType) {
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case LOC_AGPS_TYPE_INVALID:
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case LOC_AGPS_TYPE_SUPL:
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|
case LOC_AGPS_TYPE_SUPL_ES:
|
|
if (mAgnssNif == NULL) {
|
|
LOC_LOGE("NULL AGNSS NIF !");
|
|
}
|
|
return mAgnssNif;
|
|
default:
|
|
return mInternetNif;
|
|
}
|
|
|
|
LOC_LOGE("No SM found !");
|
|
return NULL;
|
|
}
|
|
|
|
void AgpsManager::requestATL(int connHandle, AGpsExtType agpsType,
|
|
LocApnTypeMask apnTypeMask){
|
|
|
|
LOC_LOGD("AgpsManager::requestATL(): connHandle %d, agpsType 0x%X apnTypeMask: 0x%X",
|
|
connHandle, agpsType, apnTypeMask);
|
|
|
|
if (0 == loc_core::ContextBase::mGps_conf.USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL &&
|
|
LOC_AGPS_TYPE_SUPL_ES == agpsType) {
|
|
agpsType = LOC_AGPS_TYPE_SUPL;
|
|
apnTypeMask &= ~LOC_APN_TYPE_MASK_EMERGENCY;
|
|
apnTypeMask |= LOC_APN_TYPE_MASK_SUPL;
|
|
LOC_LOGD("Changed agpsType to non-emergency when USE_EMERGENCY... is 0"
|
|
"and removed LOC_APN_TYPE_MASK_EMERGENCY from apnTypeMask"
|
|
"agpsType 0x%X apnTypeMask : 0x%X",
|
|
agpsType, apnTypeMask);
|
|
}
|
|
AgpsStateMachine* sm = getAgpsStateMachine(agpsType);
|
|
|
|
if (sm == NULL) {
|
|
|
|
LOC_LOGE("No AGPS State Machine for agpsType: %d apnTypeMask: 0x%X",
|
|
agpsType, apnTypeMask);
|
|
mAtlOpenStatusCb(
|
|
connHandle, 0, NULL, 0, AGPS_APN_BEARER_INVALID, agpsType, apnTypeMask);
|
|
return;
|
|
}
|
|
sm->setType(agpsType);
|
|
sm->setApnTypeMask(apnTypeMask);
|
|
|
|
/* Invoke AGPS SM processing */
|
|
AgpsSubscriber subscriber(connHandle, false, false, apnTypeMask);
|
|
sm->setCurrentSubscriber(&subscriber);
|
|
/* Send subscriber event */
|
|
sm->processAgpsEvent(AGPS_EVENT_SUBSCRIBE);
|
|
}
|
|
|
|
void AgpsManager::releaseATL(int connHandle){
|
|
|
|
LOC_LOGD("AgpsManager::releaseATL(): connHandle %d", connHandle);
|
|
|
|
/* First find the subscriber with specified handle.
|
|
* We need to search in all state machines. */
|
|
AgpsStateMachine* sm = NULL;
|
|
AgpsSubscriber* subscriber = NULL;
|
|
|
|
if (mAgnssNif &&
|
|
(subscriber = mAgnssNif->getSubscriber(connHandle)) != NULL) {
|
|
sm = mAgnssNif;
|
|
}
|
|
else if (mInternetNif &&
|
|
(subscriber = mInternetNif->getSubscriber(connHandle)) != NULL) {
|
|
sm = mInternetNif;
|
|
}
|
|
if (sm == NULL) {
|
|
LOC_LOGE("Subscriber with connHandle %d not found in any SM",
|
|
connHandle);
|
|
return;
|
|
}
|
|
|
|
/* Now send unsubscribe event */
|
|
sm->setCurrentSubscriber(subscriber);
|
|
sm->processAgpsEvent(AGPS_EVENT_UNSUBSCRIBE);
|
|
}
|
|
|
|
void AgpsManager::reportAtlOpenSuccess(
|
|
AGpsExtType agpsType, char* apnName, int apnLen,
|
|
AGpsBearerType bearerType){
|
|
|
|
LOC_LOGD("AgpsManager::reportAtlOpenSuccess(): "
|
|
"AgpsType %d, APN [%s], Len %d, BearerType %d",
|
|
agpsType, apnName, apnLen, bearerType);
|
|
|
|
/* Find the state machine instance */
|
|
AgpsStateMachine* sm = getAgpsStateMachine(agpsType);
|
|
|
|
/* Set bearer and apn info in state machine instance */
|
|
sm->setBearer(bearerType);
|
|
sm->setAPN(apnName, apnLen);
|
|
|
|
/* Send GRANTED event to state machine */
|
|
sm->processAgpsEvent(AGPS_EVENT_GRANTED);
|
|
}
|
|
|
|
void AgpsManager::reportAtlOpenFailed(AGpsExtType agpsType){
|
|
|
|
LOC_LOGD("AgpsManager::reportAtlOpenFailed(): AgpsType %d", agpsType);
|
|
|
|
/* Fetch SM and send DENIED event */
|
|
AgpsStateMachine* sm = getAgpsStateMachine(agpsType);
|
|
sm->processAgpsEvent(AGPS_EVENT_DENIED);
|
|
}
|
|
|
|
void AgpsManager::reportAtlClosed(AGpsExtType agpsType){
|
|
|
|
LOC_LOGD("AgpsManager::reportAtlClosed(): AgpsType %d", agpsType);
|
|
|
|
/* Fetch SM and send RELEASED event */
|
|
AgpsStateMachine* sm = getAgpsStateMachine(agpsType);
|
|
sm->processAgpsEvent(AGPS_EVENT_RELEASED);
|
|
}
|
|
|
|
void AgpsManager::handleModemSSR(){
|
|
|
|
LOC_LOGD("AgpsManager::handleModemSSR");
|
|
|
|
/* Drop subscribers from all state machines */
|
|
if (mAgnssNif) {
|
|
mAgnssNif->dropAllSubscribers();
|
|
}
|
|
if (mInternetNif) {
|
|
mInternetNif->dropAllSubscribers();
|
|
}
|
|
}
|