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diff --git a/gps/gnss/XtraSystemStatusObserver.h b/gps/gnss/XtraSystemStatusObserver.h
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+++ b/gps/gnss/XtraSystemStatusObserver.h
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+/* Copyright (c) 2017-2019, 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.
+ *
+ */
+#ifndef XTRA_SYSTEM_STATUS_OBS_H
+#define XTRA_SYSTEM_STATUS_OBS_H
+
+#include <cinttypes>
+#include <MsgTask.h>
+#include <LocIpc.h>
+#include <LocTimer.h>
+
+using namespace std;
+using namespace loc_util;
+using loc_core::IOsObserver;
+using loc_core::IDataItemObserver;
+using loc_core::IDataItemCore;
+
+class XtraSystemStatusObserver : public IDataItemObserver {
+public :
+    // constructor & destructor
+    XtraSystemStatusObserver(IOsObserver* sysStatObs, const MsgTask* msgTask);
+    inline virtual ~XtraSystemStatusObserver() {
+        subscribe(false);
+        mIpc.stopNonBlockingListening();
+    }
+
+    // IDataItemObserver overrides
+    inline virtual void getName(string& name);
+    virtual void notify(const list<IDataItemCore*>& dlist);
+
+    bool updateLockStatus(GnssConfigGpsLock lock);
+    bool updateConnections(uint64_t allConnections,
+            loc_core::NetworkInfoType* networkHandleInfo);
+    bool updateTac(const string& tac);
+    bool updateMccMnc(const string& mccmnc);
+    bool updateXtraThrottle(const bool enabled);
+    inline const MsgTask* getMsgTask() { return mMsgTask; }
+    void subscribe(bool yes);
+    bool onStatusRequested(int32_t xtraStatusUpdated);
+
+private:
+    IOsObserver*    mSystemStatusObsrvr;
+    const MsgTask* mMsgTask;
+    GnssConfigGpsLock mGpsLock;
+    LocIpc mIpc;
+    uint64_t mConnections;
+    loc_core::NetworkInfoType mNetworkHandle[MAX_NETWORK_HANDLES];
+    string mTac;
+    string mMccmnc;
+    bool mXtraThrottle;
+    bool mReqStatusReceived;
+    bool mIsConnectivityStatusKnown;
+    shared_ptr<LocIpcSender> mSender;
+
+    class DelayLocTimer : public LocTimer {
+        LocIpcSender& mSender;
+    public:
+        DelayLocTimer(LocIpcSender& sender) : mSender(sender) {}
+        void timeOutCallback() override {
+            LocIpc::send(mSender, (const uint8_t*)"halinit", sizeof("halinit"));
+        }
+    } mDelayLocTimer;
+};
+
+#endif