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/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.server;
import android.app.ActivityManagerNative;
import android.app.AlarmManager;
import android.app.IAlarmManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Binder;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.PowerManager;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.text.TextUtils;
import android.util.Config;
import android.util.Log;
import java.io.FileDescriptor;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.TimeZone;
class AlarmManagerService extends IAlarmManager.Stub {
private static final int RTC_WAKEUP_MASK = 1 << AlarmManager.RTC_WAKEUP;
private static final int RTC_MASK = 1 << AlarmManager.RTC;
private static final int ELAPSED_REALTIME_WAKEUP_MASK = 1 << AlarmManager.ELAPSED_REALTIME_WAKEUP;
private static final int ELAPSED_REALTIME_MASK = 1 << AlarmManager.ELAPSED_REALTIME;
private static final int TIME_CHANGED_MASK = 1 << 16;
private static final String TAG = "AlarmManager";
private static final String ClockReceiver_TAG = "ClockReceiver";
private static final boolean localLOGV = false;
private static final int ALARM_EVENT = 1;
private static final String TIMEZONE_PROPERTY = "persist.sys.timezone";
private static final Intent mBackgroundIntent
= new Intent().addFlags(Intent.FLAG_FROM_BACKGROUND);
private final Context mContext;
private Object mLock = new Object();
private final ArrayList<Alarm> mRtcWakeupAlarms = new ArrayList<Alarm>();
private final ArrayList<Alarm> mRtcAlarms = new ArrayList<Alarm>();
private final ArrayList<Alarm> mElapsedRealtimeWakeupAlarms = new ArrayList<Alarm>();
private final ArrayList<Alarm> mElapsedRealtimeAlarms = new ArrayList<Alarm>();
// slots corresponding with the inexact-repeat interval buckets,
// ordered from shortest to longest
private static final long sInexactSlotIntervals[] = {
AlarmManager.INTERVAL_FIFTEEN_MINUTES,
AlarmManager.INTERVAL_HALF_HOUR,
AlarmManager.INTERVAL_HOUR,
AlarmManager.INTERVAL_HALF_DAY,
AlarmManager.INTERVAL_DAY
};
private long mInexactDeliveryTimes[] = { 0, 0, 0, 0, 0};
private int mDescriptor;
private int mBroadcastRefCount = 0;
private PowerManager.WakeLock mWakeLock;
private final AlarmThread mWaitThread = new AlarmThread();
private final AlarmHandler mHandler = new AlarmHandler();
private ClockReceiver mClockReceiver;
private UninstallReceiver mUninstallReceiver;
private final ResultReceiver mResultReceiver = new ResultReceiver();
private final PendingIntent mTimeTickSender;
private final PendingIntent mDateChangeSender;
private static final class FilterStats {
int count;
}
private static final class BroadcastStats {
long aggregateTime;
int numWakeup;
long startTime;
int nesting;
HashMap<Intent.FilterComparison, FilterStats> filterStats
= new HashMap<Intent.FilterComparison, FilterStats>();
}
private final HashMap<String, BroadcastStats> mBroadcastStats
= new HashMap<String, BroadcastStats>();
public AlarmManagerService(Context context) {
mContext = context;
mDescriptor = init();
PowerManager pm = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);
mTimeTickSender = PendingIntent.getBroadcast(context, 0,
new Intent(Intent.ACTION_TIME_TICK).addFlags(
Intent.FLAG_RECEIVER_REGISTERED_ONLY), 0);
mDateChangeSender = PendingIntent.getBroadcast(context, 0,
new Intent(Intent.ACTION_DATE_CHANGED), 0);
// now that we have initied the driver schedule the alarm
mClockReceiver= new ClockReceiver();
mClockReceiver.scheduleTimeTickEvent();
mClockReceiver.scheduleDateChangedEvent();
mUninstallReceiver = new UninstallReceiver();
if (mDescriptor != -1) {
mWaitThread.start();
} else {
Log.w(TAG, "Failed to open alarm driver. Falling back to a handler.");
}
}
protected void finalize() throws Throwable {
try {
close(mDescriptor);
} finally {
super.finalize();
}
}
public void set(int type, long triggerAtTime, PendingIntent operation) {
setRepeating(type, triggerAtTime, 0, operation);
}
public void setRepeating(int type, long triggerAtTime, long interval,
PendingIntent operation) {
if (operation == null) {
Log.w(TAG, "set/setRepeating ignored because there is no intent");
return;
}
synchronized (mLock) {
Alarm alarm = new Alarm();
alarm.type = type;
alarm.when = triggerAtTime;
alarm.repeatInterval = interval;
alarm.operation = operation;
// Remove this alarm if already scheduled.
removeLocked(operation);
if (localLOGV) Log.v(TAG, "set: " + alarm);
int index = addAlarmLocked(alarm);
if (index == 0) {
setLocked(alarm);
}
}
}
public void setInexactRepeating(int type, long triggerAtTime, long interval,
PendingIntent operation) {
if (operation == null) {
Log.w(TAG, "setInexactRepeating ignored because there is no intent");
return;
}
// find the slot in the delivery-times array that we will use
int intervalSlot;
for (intervalSlot = 0; intervalSlot < sInexactSlotIntervals.length; intervalSlot++) {
if (sInexactSlotIntervals[intervalSlot] == interval) {
break;
}
}
// Non-bucket intervals just fall back to the less-efficient
// unbucketed recurring alarm implementation
if (intervalSlot >= sInexactSlotIntervals.length) {
setRepeating(type, triggerAtTime, interval, operation);
return;
}
// Align bucketed alarm deliveries by trying to match
// the shortest-interval bucket already scheduled
long bucketTime = 0;
for (int slot = 0; slot < mInexactDeliveryTimes.length; slot++) {
if (mInexactDeliveryTimes[slot] > 0) {
bucketTime = mInexactDeliveryTimes[slot];
break;
}
}
if (bucketTime == 0) {
// If nothing is scheduled yet, just start at the requested time
bucketTime = triggerAtTime;
} else {
// Align the new alarm with the existing bucketed sequence. To achieve
// alignment, we slide the start time around by min{interval, slot interval}
long adjustment = (interval <= sInexactSlotIntervals[intervalSlot])
? interval : sInexactSlotIntervals[intervalSlot];
// The bucket may have started in the past; adjust
while (bucketTime < triggerAtTime) {
bucketTime += adjustment;
}
// Or the bucket may be set to start more than an interval beyond
// our requested trigger time; pull it back to meet our needs
while (bucketTime > triggerAtTime + adjustment) {
bucketTime -= adjustment;
}
}
// Remember where this bucket started (reducing the amount of later
// fixup required) and set the alarm with the new, bucketed start time.
if (localLOGV) Log.v(TAG, "setInexactRepeating: interval=" + interval
+ " bucketTime=" + bucketTime);
mInexactDeliveryTimes[intervalSlot] = bucketTime;
setRepeating(type, bucketTime, interval, operation);
}
public void setTimeZone(String tz) {
mContext.enforceCallingOrSelfPermission(
"android.permission.SET_TIME_ZONE",
"setTimeZone");
if (TextUtils.isEmpty(tz)) return;
TimeZone zone = TimeZone.getTimeZone(tz);
// Prevent reentrant calls from stepping on each other when writing
// the time zone property
boolean timeZoneWasChanged = false;
synchronized (this) {
String current = SystemProperties.get(TIMEZONE_PROPERTY);
if (current == null || !current.equals(zone.getID())) {
if (localLOGV) Log.v(TAG, "timezone changed: " + current + ", new=" + zone.getID());
timeZoneWasChanged = true;
SystemProperties.set(TIMEZONE_PROPERTY, zone.getID());
// Update the kernel timezone information
// Kernel tracks time offsets as 'minutes west of GMT'
int gmtOffset = (zone.getRawOffset() + zone.getDSTSavings()) / 60000;
setKernelTimezone(mDescriptor, -(gmtOffset));
}
}
TimeZone.setDefault(null);
if (timeZoneWasChanged) {
Intent intent = new Intent(Intent.ACTION_TIMEZONE_CHANGED);
intent.putExtra("time-zone", zone.getID());
mContext.sendBroadcast(intent);
}
}
public void remove(PendingIntent operation) {
if (operation == null) {
return;
}
synchronized (mLock) {
removeLocked(operation);
}
}
public void removeLocked(PendingIntent operation) {
removeLocked(mRtcWakeupAlarms, operation);
removeLocked(mRtcAlarms, operation);
removeLocked(mElapsedRealtimeWakeupAlarms, operation);
removeLocked(mElapsedRealtimeAlarms, operation);
}
private void removeLocked(ArrayList<Alarm> alarmList,
PendingIntent operation) {
if (alarmList.size() <= 0) {
return;
}
// iterator over the list removing any it where the intent match
Iterator<Alarm> it = alarmList.iterator();
while (it.hasNext()) {
Alarm alarm = it.next();
if (alarm.operation.equals(operation)) {
it.remove();
}
}
}
public void removeLocked(String packageName) {
removeLocked(mRtcWakeupAlarms, packageName);
removeLocked(mRtcAlarms, packageName);
removeLocked(mElapsedRealtimeWakeupAlarms, packageName);
removeLocked(mElapsedRealtimeAlarms, packageName);
}
private void removeLocked(ArrayList<Alarm> alarmList,
String packageName) {
if (alarmList.size() <= 0) {
return;
}
// iterator over the list removing any it where the intent match
Iterator<Alarm> it = alarmList.iterator();
while (it.hasNext()) {
Alarm alarm = it.next();
if (alarm.operation.getTargetPackage().equals(packageName)) {
it.remove();
}
}
}
private ArrayList<Alarm> getAlarmList(int type) {
switch (type) {
case AlarmManager.RTC_WAKEUP: return mRtcWakeupAlarms;
case AlarmManager.RTC: return mRtcAlarms;
case AlarmManager.ELAPSED_REALTIME_WAKEUP: return mElapsedRealtimeWakeupAlarms;
case AlarmManager.ELAPSED_REALTIME: return mElapsedRealtimeAlarms;
}
return null;
}
private int addAlarmLocked(Alarm alarm) {
ArrayList<Alarm> alarmList = getAlarmList(alarm.type);
int index = Collections.binarySearch(alarmList, alarm);
index = (index < 0) ? ((index + 1) * -1) : index;
if (localLOGV) Log.v(
TAG, "Adding alarm " + alarm + " at " + index);
alarmList.add(index, alarm);
return index;
}
public long timeToNextAlarm() {
long nextAlarm = 0xfffffffffffffffl;
synchronized (mLock) {
for (int i=AlarmManager.RTC_WAKEUP;
i<=AlarmManager.ELAPSED_REALTIME; i++) {
ArrayList<Alarm> alarmList = getAlarmList(i);
if (alarmList.size() > 0) {
Alarm a = alarmList.get(0);
if (a.when < nextAlarm) {
nextAlarm = a.when;
}
}
}
}
return nextAlarm;
}
private void setLocked(Alarm alarm)
{
if (mDescriptor != -1)
{
set(mDescriptor, alarm.type, (alarm.when * 1000 * 1000));
}
else
{
Message msg = Message.obtain();
msg.what = ALARM_EVENT;
mHandler.removeMessages(ALARM_EVENT);
mHandler.sendMessageAtTime(msg, alarm.when);
}
}
@Override
protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
if (mContext.checkCallingPermission("android.permission.DUMP")
!= PackageManager.PERMISSION_GRANTED) {
pw.println("Permission Denial: can't dump AlarmManager from from pid="
+ Binder.getCallingPid()
+ ", uid=" + Binder.getCallingUid());
return;
}
synchronized (mLock) {
pw.println("Current Alarm Manager state:");
if (mRtcWakeupAlarms.size() > 0) {
pw.println(" ");
pw.println(" Realtime wakeup alarms that are scheduled:");
dumpAlarmList(pw, mRtcWakeupAlarms, " ", "RTC_WAKEUP");
}
if (mRtcAlarms.size() > 0) {
pw.println(" ");
pw.println(" Realtime alarms that are scheduled:");
dumpAlarmList(pw, mRtcAlarms, " ", "RTC");
}
if (mElapsedRealtimeWakeupAlarms.size() > 0) {
pw.println(" ");
pw.println(" Elapsed realtime wakeup alarms that are scheduled:");
dumpAlarmList(pw, mElapsedRealtimeWakeupAlarms, " ", "ELAPSED_REALTIME_WAKEUP");
}
if (mElapsedRealtimeAlarms.size() > 0) {
pw.println(" ");
pw.println(" Elapsed realtime alarms that are scheduled:");
dumpAlarmList(pw, mElapsedRealtimeAlarms, " ", "ELAPSED_REALTIME");
}
pw.println(" ");
pw.println(" Broadcast ref count: " + mBroadcastRefCount);
pw.println(" ");
pw.println(" Alarm Stats:");
for (Map.Entry<String, BroadcastStats> be : mBroadcastStats.entrySet()) {
BroadcastStats bs = be.getValue();
pw.println(" " + be.getKey());
pw.println(" " + bs.aggregateTime + "ms running, "
+ bs.numWakeup + " wakeups");
for (Map.Entry<Intent.FilterComparison, FilterStats> fe
: bs.filterStats.entrySet()) {
pw.println(" " + fe.getValue().count + " alarms: "
+ fe.getKey().getIntent());
}
}
}
}
private static final void dumpAlarmList(PrintWriter pw, ArrayList<Alarm> list, String prefix, String label) {
for (int i=list.size()-1; i>=0; i--) {
Alarm a = list.get(i);
pw.println(prefix + label + " #" + i + ":");
a.dump(pw, prefix + " ");
}
}
private native int init();
private native void close(int fd);
private native void set(int fd, int type, long nanoseconds);
private native int waitForAlarm(int fd);
private native int setKernelTimezone(int fd, int minuteswest);
private void triggerAlarmsLocked(ArrayList<Alarm> alarmList,
ArrayList<Alarm> triggerList,
long now)
{
Iterator<Alarm> it = alarmList.iterator();
ArrayList<Alarm> repeats = new ArrayList<Alarm>();
while (it.hasNext())
{
Alarm alarm = it.next();
if (localLOGV) Log.v(TAG, "Checking active alarm when=" + alarm.when + " " + alarm);
if (alarm.when > now)
{
// don't fire alarms in the future
break;
}
// add it to the trigger list so we can trigger it without the lock held.
// recurring alarms may have passed several alarm intervals while the
// phone was asleep or off, so pass a trigger count when sending them.
if (localLOGV) Log.v(TAG, "Alarm triggering: " + alarm);
alarm.count = 1;
if (alarm.repeatInterval > 0) {
// this adjustment will be zero if we're late by
// less than one full repeat interval
alarm.count += (now - alarm.when) / alarm.repeatInterval;
}
triggerList.add(alarm);
// remove the alarm from the list
it.remove();
// if it repeats queue it up to be read-added to the list
if (alarm.repeatInterval > 0)
{
repeats.add(alarm);
}
}
// reset any repeating alarms.
it = repeats.iterator();
while (it.hasNext())
{
Alarm alarm = it.next();
alarm.when += alarm.count * alarm.repeatInterval;
addAlarmLocked(alarm);
}
if (alarmList.size() > 0)
{
setLocked(alarmList.get(0));
}
}
private class Alarm implements Comparable<Alarm> {
public int type;
public int count;
public long when;
public long repeatInterval;
public PendingIntent operation;
public Alarm() {
when = 0;
repeatInterval = 0;
operation = null;
}
public int compareTo(Alarm obj)
{
if (obj.when > this.when) return -1;
if (obj.when < this.when) return 1;
if (obj.operation.equals(this.operation)
&& obj.repeatInterval == this.repeatInterval) return 0;
return -1;
}
public String toString()
{
return "Alarm{"
+ Integer.toHexString(System.identityHashCode(this))
+ " type " + type + " " + operation.getTargetPackage() + "}";
}
public void dump(PrintWriter pw, String prefix)
{
pw.println(prefix + this);
pw.println(prefix + "type=" + type + " when=" + when
+ " repeatInterval=" + repeatInterval
+ " count=" + count);
pw.println(prefix + "operation=" + operation);
}
}
private class AlarmThread extends Thread
{
public AlarmThread()
{
super("AlarmManager");
}
public void run()
{
while (true)
{
int result = waitForAlarm(mDescriptor);
ArrayList<Alarm> triggerList = new ArrayList<Alarm>();
if ((result & TIME_CHANGED_MASK) != 0) {
remove(mTimeTickSender);
mClockReceiver.scheduleTimeTickEvent();
mContext.sendBroadcast(new Intent(Intent.ACTION_TIME_CHANGED));
}
synchronized (mLock) {
final long nowRTC = System.currentTimeMillis();
final long nowELAPSED = SystemClock.elapsedRealtime();
if (localLOGV) Log.v(
TAG, "Checking for alarms... rtc=" + nowRTC
+ ", elapsed=" + nowELAPSED);
if ((result & RTC_WAKEUP_MASK) != 0)
triggerAlarmsLocked(mRtcWakeupAlarms, triggerList, nowRTC);
if ((result & RTC_MASK) != 0)
triggerAlarmsLocked(mRtcAlarms, triggerList, nowRTC);
if ((result & ELAPSED_REALTIME_WAKEUP_MASK) != 0)
triggerAlarmsLocked(mElapsedRealtimeWakeupAlarms, triggerList, nowELAPSED);
if ((result & ELAPSED_REALTIME_MASK) != 0)
triggerAlarmsLocked(mElapsedRealtimeAlarms, triggerList, nowELAPSED);
// now trigger the alarms
Iterator<Alarm> it = triggerList.iterator();
while (it.hasNext()) {
Alarm alarm = it.next();
try {
if (localLOGV) Log.v(TAG, "sending alarm " + alarm);
alarm.operation.send(mContext, 0,
mBackgroundIntent.putExtra(
Intent.EXTRA_ALARM_COUNT, alarm.count),
mResultReceiver, mHandler);
// we have an active broadcast so stay awake.
if (mBroadcastRefCount == 0) {
mWakeLock.acquire();
}
mBroadcastRefCount++;
BroadcastStats bs = getStatsLocked(alarm.operation);
if (bs.nesting == 0) {
bs.startTime = nowELAPSED;
} else {
bs.nesting++;
}
if (alarm.type == AlarmManager.ELAPSED_REALTIME_WAKEUP
|| alarm.type == AlarmManager.RTC_WAKEUP) {
bs.numWakeup++;
ActivityManagerNative.noteWakeupAlarm(
alarm.operation);
}
} catch (PendingIntent.CanceledException e) {
if (alarm.repeatInterval > 0) {
// This IntentSender is no longer valid, but this
// is a repeating alarm, so toss the hoser.
remove(alarm.operation);
}
} catch (RuntimeException e) {
Log.w(TAG, "Failure sending alarm.", e);
}
}
}
}
}
}
private class AlarmHandler extends Handler {
public static final int ALARM_EVENT = 1;
public static final int MINUTE_CHANGE_EVENT = 2;
public static final int DATE_CHANGE_EVENT = 3;
public AlarmHandler() {
}
public void handleMessage(Message msg) {
if (msg.what == ALARM_EVENT) {
ArrayList<Alarm> triggerList = new ArrayList<Alarm>();
synchronized (mLock) {
final long nowRTC = System.currentTimeMillis();
triggerAlarmsLocked(mRtcWakeupAlarms, triggerList, nowRTC);
triggerAlarmsLocked(mRtcAlarms, triggerList, nowRTC);
triggerAlarmsLocked(mElapsedRealtimeWakeupAlarms, triggerList, nowRTC);
triggerAlarmsLocked(mElapsedRealtimeAlarms, triggerList, nowRTC);
}
// now trigger the alarms without the lock held
Iterator<Alarm> it = triggerList.iterator();
while (it.hasNext())
{
Alarm alarm = it.next();
try {
alarm.operation.send();
} catch (PendingIntent.CanceledException e) {
if (alarm.repeatInterval > 0) {
// This IntentSender is no longer valid, but this
// is a repeating alarm, so toss the hoser.
remove(alarm.operation);
}
}
}
}
}
}
class ClockReceiver extends BroadcastReceiver {
public ClockReceiver() {
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_TIME_TICK);
filter.addAction(Intent.ACTION_DATE_CHANGED);
mContext.registerReceiver(this, filter);
}
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_TIME_TICK)) {
scheduleTimeTickEvent();
} else if (intent.getAction().equals(Intent.ACTION_DATE_CHANGED)) {
// Since the kernel does not keep track of DST, we need to
// reset the TZ information at the beginning of each day
// based off of the current Zone gmt offset + userspace tracked
// daylight savings information.
TimeZone zone = TimeZone.getTimeZone(SystemProperties.get(TIMEZONE_PROPERTY));
int gmtOffset = (zone.getRawOffset() + zone.getDSTSavings()) / 60000;
setKernelTimezone(mDescriptor, -(gmtOffset));
scheduleDateChangedEvent();
}
}
public void scheduleTimeTickEvent() {
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.add(Calendar.MINUTE, 1);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MILLISECOND, 0);
set(AlarmManager.RTC, calendar.getTimeInMillis(), mTimeTickSender);
}
public void scheduleDateChangedEvent() {
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.add(Calendar.DAY_OF_MONTH, 1);
calendar.set(Calendar.HOUR, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MILLISECOND, 0);
set(AlarmManager.RTC, calendar.getTimeInMillis(), mDateChangeSender);
}
}
class UninstallReceiver extends BroadcastReceiver {
public UninstallReceiver() {
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
filter.addAction(Intent.ACTION_PACKAGE_RESTARTED);
filter.addDataScheme("package");
mContext.registerReceiver(this, filter);
}
@Override
public void onReceive(Context context, Intent intent) {
synchronized (mLock) {
Uri data = intent.getData();
if (data != null) {
String pkg = data.getSchemeSpecificPart();
removeLocked(pkg);
mBroadcastStats.remove(pkg);
}
}
}
}
private final BroadcastStats getStatsLocked(PendingIntent pi) {
String pkg = pi.getTargetPackage();
BroadcastStats bs = mBroadcastStats.get(pkg);
if (bs == null) {
bs = new BroadcastStats();
mBroadcastStats.put(pkg, bs);
}
return bs;
}
class ResultReceiver implements PendingIntent.OnFinished {
public void onSendFinished(PendingIntent pi, Intent intent, int resultCode,
String resultData, Bundle resultExtras) {
synchronized (mLock) {
BroadcastStats bs = getStatsLocked(pi);
if (bs != null) {
bs.nesting--;
if (bs.nesting <= 0) {
bs.nesting = 0;
bs.aggregateTime += SystemClock.elapsedRealtime()
- bs.startTime;
Intent.FilterComparison fc = new Intent.FilterComparison(intent);
FilterStats fs = bs.filterStats.get(fc);
if (fs == null) {
fs = new FilterStats();
bs.filterStats.put(fc, fs);
}
fs.count++;
}
}
mBroadcastRefCount--;
if (mBroadcastRefCount == 0) {
mWakeLock.release();
}
}
}
}
}