/*
 * Copyright (C) 2008 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 android.os;

import android.app.ActivityManager;
import android.app.job.JobParameters;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.server.ServerProtoEnums;
import android.service.batterystats.BatteryStatsServiceDumpHistoryProto;
import android.service.batterystats.BatteryStatsServiceDumpProto;
import android.telephony.SignalStrength;
import android.telephony.TelephonyManager;
import android.text.format.DateFormat;
import android.util.ArrayMap;
import android.util.LongSparseArray;
import android.util.MutableBoolean;
import android.util.Pair;
import android.util.Printer;
import android.util.SparseArray;
import android.util.SparseIntArray;
import android.util.TimeUtils;
import android.util.proto.ProtoOutputStream;
import android.view.Display;

import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.location.gnssmetrics.GnssMetrics;
import com.android.internal.os.BatterySipper;
import com.android.internal.os.BatteryStatsHelper;

import java.io.FileDescriptor;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Formatter;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

A class providing access to battery usage statistics, including information on
wakelocks, processes, packages, and services.  All times are represented in microseconds
except where indicated otherwise.
@hide
/**
 * A class providing access to battery usage statistics, including information on
 * wakelocks, processes, packages, and services.  All times are represented in microseconds
 * except where indicated otherwise.
 * @hide
 */
public abstract class BatteryStats implements Parcelable {
    private static final String TAG = "BatteryStats";

    private static final boolean LOCAL_LOGV = false;
    
Fetching RPM stats is too slow to do each time screen changes, so disable it. /** Fetching RPM stats is too slow to do each time screen changes, so disable it. */
    protected static final boolean SCREEN_OFF_RPM_STATS_ENABLED = false;

    
@hide
/** @hide */
    public static final String SERVICE_NAME = "batterystats";

    
A constant indicating a partial wake lock timer.
/**
     * A constant indicating a partial wake lock timer.
     */
    public static final int WAKE_TYPE_PARTIAL = 0;

    
A constant indicating a full wake lock timer.
/**
     * A constant indicating a full wake lock timer.
     */
    public static final int WAKE_TYPE_FULL = 1;

    
A constant indicating a window wake lock timer.
/**
     * A constant indicating a window wake lock timer.
     */
    public static final int WAKE_TYPE_WINDOW = 2;

    
A constant indicating a sensor timer.
/**
     * A constant indicating a sensor timer.
     */
    public static final int SENSOR = 3;

    
A constant indicating a a wifi running timer
/**
     * A constant indicating a a wifi running timer
     */
    public static final int WIFI_RUNNING = 4;

    
A constant indicating a full wifi lock timer
/**
     * A constant indicating a full wifi lock timer
     */
    public static final int FULL_WIFI_LOCK = 5;

    
A constant indicating a wifi scan
/**
     * A constant indicating a wifi scan
     */
    public static final int WIFI_SCAN = 6;

    
A constant indicating a wifi multicast timer
/**
     * A constant indicating a wifi multicast timer
     */
    public static final int WIFI_MULTICAST_ENABLED = 7;

    
A constant indicating a video turn on timer
/**
     * A constant indicating a video turn on timer
     */
    public static final int VIDEO_TURNED_ON = 8;

    
A constant indicating a vibrator on timer
/**
     * A constant indicating a vibrator on timer
     */
    public static final int VIBRATOR_ON = 9;

    
A constant indicating a foreground activity timer
/**
     * A constant indicating a foreground activity timer
     */
    public static final int FOREGROUND_ACTIVITY = 10;

    
A constant indicating a wifi batched scan is active
/**
     * A constant indicating a wifi batched scan is active
     */
    public static final int WIFI_BATCHED_SCAN = 11;

    
A constant indicating a process state timer
/**
     * A constant indicating a process state timer
     */
    public static final int PROCESS_STATE = 12;

    
A constant indicating a sync timer
/**
     * A constant indicating a sync timer
     */
    public static final int SYNC = 13;

    
A constant indicating a job timer
/**
     * A constant indicating a job timer
     */
    public static final int JOB = 14;

    
A constant indicating an audio turn on timer
/**
     * A constant indicating an audio turn on timer
     */
    public static final int AUDIO_TURNED_ON = 15;

    
A constant indicating a flashlight turn on timer
/**
     * A constant indicating a flashlight turn on timer
     */
    public static final int FLASHLIGHT_TURNED_ON = 16;

    
A constant indicating a camera turn on timer
/**
     * A constant indicating a camera turn on timer
     */
    public static final int CAMERA_TURNED_ON = 17;

    
A constant indicating a draw wake lock timer.
/**
     * A constant indicating a draw wake lock timer.
     */
    public static final int WAKE_TYPE_DRAW = 18;

    
A constant indicating a bluetooth scan timer.
/**
     * A constant indicating a bluetooth scan timer.
     */
    public static final int BLUETOOTH_SCAN_ON = 19;

    
A constant indicating an aggregated partial wake lock timer.
/**
     * A constant indicating an aggregated partial wake lock timer.
     */
    public static final int AGGREGATED_WAKE_TYPE_PARTIAL = 20;

    
A constant indicating a bluetooth scan timer for unoptimized scans.
/**
     * A constant indicating a bluetooth scan timer for unoptimized scans.
     */
    public static final int BLUETOOTH_UNOPTIMIZED_SCAN_ON = 21;

    
A constant indicating a foreground service timer
/**
     * A constant indicating a foreground service timer
     */
    public static final int FOREGROUND_SERVICE = 22;

    
A constant indicating an aggregate wifi multicast timer
/**
     * A constant indicating an aggregate wifi multicast timer
     */
     public static final int WIFI_AGGREGATE_MULTICAST_ENABLED = 23;

    
Include all of the data in the stats, including previously saved data.
/**
     * Include all of the data in the stats, including previously saved data.
     */
    public static final int STATS_SINCE_CHARGED = 0;

    
Include only the current run in the stats.
/**
     * Include only the current run in the stats.
     */
    public static final int STATS_CURRENT = 1;

    
Include only the run since the last time the device was unplugged in the stats.
/**
     * Include only the run since the last time the device was unplugged in the stats.
     */
    public static final int STATS_SINCE_UNPLUGGED = 2;

    // NOTE: Update this list if you add/change any stats above.
    // These characters are supposed to represent "total", "last", "current",
    // and "unplugged". They were shortened for efficiency sake.
    private static final String[] STAT_NAMES = { "l", "c", "u" };

    
Current version of checkin data format.
New in version 19:
  - Wakelock data (wl) gets current and max times.
New in version 20:
  - Background timers and counters for: Sensor, BluetoothScan, WifiScan, Jobs, Syncs.
New in version 21:
  - Actual (not just apportioned) Wakelock time is also recorded.
  - Aggregated partial wakelock time (per uid, instead of per wakelock) is recorded.
  - BLE scan result count
  - CPU frequency time per uid
New in version 22:
  - BLE scan result background count, BLE unoptimized scan time
  - Background partial wakelock time & count
New in version 23:
  - Logging smeared power model values
New in version 24:
  - Fixed bugs in background timers and BLE scan time
New in version 25:
  - Package wakeup alarms are now on screen-off timebase
New in version 26:
  - Resource power manager (rpm) states [but screenOffRpm is disabled from working properly]
New in version 27:
  - Always On Display (screen doze mode) time and power
New in version 28:
  - Light/Deep Doze power
  - WiFi Multicast Wakelock statistics (count & duration)
New in version 29:
  - Process states re-ordered. TOP_SLEEPING now below BACKGROUND. HEAVY_WEIGHT introduced.
  - CPU times per UID process state
New in version 30:
  - Uid.PROCESS_STATE_FOREGROUND_SERVICE only tracks
  ActivityManager.PROCESS_STATE_FOREGROUND_SERVICE.
New in version 31:
  - New cellular network types.
  - Deferred job metrics.
New in version 32:
  - Ambient display properly output in data dump.
/**
     * Current version of checkin data format.
     *
     * New in version 19:
     *   - Wakelock data (wl) gets current and max times.
     * New in version 20:
     *   - Background timers and counters for: Sensor, BluetoothScan, WifiScan, Jobs, Syncs.
     * New in version 21:
     *   - Actual (not just apportioned) Wakelock time is also recorded.
     *   - Aggregated partial wakelock time (per uid, instead of per wakelock) is recorded.
     *   - BLE scan result count
     *   - CPU frequency time per uid
     * New in version 22:
     *   - BLE scan result background count, BLE unoptimized scan time
     *   - Background partial wakelock time & count
     * New in version 23:
     *   - Logging smeared power model values
     * New in version 24:
     *   - Fixed bugs in background timers and BLE scan time
     * New in version 25:
     *   - Package wakeup alarms are now on screen-off timebase
     * New in version 26:
     *   - Resource power manager (rpm) states [but screenOffRpm is disabled from working properly]
     * New in version 27:
     *   - Always On Display (screen doze mode) time and power
     * New in version 28:
     *   - Light/Deep Doze power
     *   - WiFi Multicast Wakelock statistics (count & duration)
     * New in version 29:
     *   - Process states re-ordered. TOP_SLEEPING now below BACKGROUND. HEAVY_WEIGHT introduced.
     *   - CPU times per UID process state
     * New in version 30:
     *   - Uid.PROCESS_STATE_FOREGROUND_SERVICE only tracks
     *   ActivityManager.PROCESS_STATE_FOREGROUND_SERVICE.
     * New in version 31:
     *   - New cellular network types.
     *   - Deferred job metrics.
     * New in version 32:
     *   - Ambient display properly output in data dump.
     */
    static final int CHECKIN_VERSION = 32;

    
Old version, we hit 9 and ran out of room, need to remove.
/**
     * Old version, we hit 9 and ran out of room, need to remove.
     */
    private static final int BATTERY_STATS_CHECKIN_VERSION = 9;

    private static final long BYTES_PER_KB = 1024;
    private static final long BYTES_PER_MB = 1048576; // 1024^2
    private static final long BYTES_PER_GB = 1073741824; //1024^3

    private static final String VERSION_DATA = "vers";
    private static final String UID_DATA = "uid";
    private static final String WAKEUP_ALARM_DATA = "wua";
    private static final String APK_DATA = "apk";
    private static final String PROCESS_DATA = "pr";
    private static final String CPU_DATA = "cpu";
    private static final String GLOBAL_CPU_FREQ_DATA = "gcf";
    private static final String CPU_TIMES_AT_FREQ_DATA = "ctf";
    // rpm line is:
    // BATTERY_STATS_CHECKIN_VERSION, uid, which, "rpm", state/voter name, total time, total count,
    // screen-off time, screen-off count
    private static final String RESOURCE_POWER_MANAGER_DATA = "rpm";
    private static final String SENSOR_DATA = "sr";
    private static final String VIBRATOR_DATA = "vib";
    private static final String FOREGROUND_ACTIVITY_DATA = "fg";
    // fgs line is:
    // BATTERY_STATS_CHECKIN_VERSION, uid, category, "fgs",
    // foreground service time, count
    private static final String FOREGROUND_SERVICE_DATA = "fgs";
    private static final String STATE_TIME_DATA = "st";
    // wl line is:
    // BATTERY_STATS_CHECKIN_VERSION, uid, which, "wl", name,
    // full        totalTime, 'f',  count, current duration, max duration, total duration,
    // partial     totalTime, 'p',  count, current duration, max duration, total duration,
    // bg partial  totalTime, 'bp', count, current duration, max duration, total duration,
    // window      totalTime, 'w',  count, current duration, max duration, total duration
    // [Currently, full and window wakelocks have durations current = max = total = -1]
    private static final String WAKELOCK_DATA = "wl";
    // awl line is:
    // BATTERY_STATS_CHECKIN_VERSION, uid, which, "awl",
    // cumulative partial wakelock duration, cumulative background partial wakelock duration
    private static final String AGGREGATED_WAKELOCK_DATA = "awl";
    private static final String SYNC_DATA = "sy";
    private static final String JOB_DATA = "jb";
    private static final String JOB_COMPLETION_DATA = "jbc";

    
jbd line is:
BATTERY_STATS_CHECKIN_VERSION, uid, which, "jbd",
jobsDeferredEventCount, jobsDeferredCount, totalLatencyMillis,
count at latency < 1 hr, count at latency 1 to 2 hrs, 2 to 4 hrs, 4 to 8 hrs, and past 8 hrs

See Also:
JOB_FRESHNESS_BUCKETS/**
     * jbd line is:
     * BATTERY_STATS_CHECKIN_VERSION, uid, which, "jbd",
     * jobsDeferredEventCount, jobsDeferredCount, totalLatencyMillis,
     * count at latency < 1 hr, count at latency 1 to 2 hrs, 2 to 4 hrs, 4 to 8 hrs, and past 8 hrs
     * <p>
     * @see #JOB_FRESHNESS_BUCKETS
     */
    private static final String JOBS_DEFERRED_DATA = "jbd";
    private static final String KERNEL_WAKELOCK_DATA = "kwl";
    private static final String WAKEUP_REASON_DATA = "wr";
    private static final String NETWORK_DATA = "nt";
    private static final String USER_ACTIVITY_DATA = "ua";
    private static final String BATTERY_DATA = "bt";
    private static final String BATTERY_DISCHARGE_DATA = "dc";
    private static final String BATTERY_LEVEL_DATA = "lv";
    private static final String GLOBAL_WIFI_DATA = "gwfl";
    private static final String WIFI_DATA = "wfl";
    private static final String GLOBAL_WIFI_CONTROLLER_DATA = "gwfcd";
    private static final String WIFI_CONTROLLER_DATA = "wfcd";
    private static final String GLOBAL_BLUETOOTH_CONTROLLER_DATA = "gble";
    private static final String BLUETOOTH_CONTROLLER_DATA = "ble";
    private static final String BLUETOOTH_MISC_DATA = "blem";
    private static final String MISC_DATA = "m";
    private static final String GLOBAL_NETWORK_DATA = "gn";
    private static final String GLOBAL_MODEM_CONTROLLER_DATA = "gmcd";
    private static final String MODEM_CONTROLLER_DATA = "mcd";
    private static final String HISTORY_STRING_POOL = "hsp";
    private static final String HISTORY_DATA = "h";
    private static final String SCREEN_BRIGHTNESS_DATA = "br";
    private static final String SIGNAL_STRENGTH_TIME_DATA = "sgt";
    private static final String SIGNAL_SCANNING_TIME_DATA = "sst";
    private static final String SIGNAL_STRENGTH_COUNT_DATA = "sgc";
    private static final String DATA_CONNECTION_TIME_DATA = "dct";
    private static final String DATA_CONNECTION_COUNT_DATA = "dcc";
    private static final String WIFI_STATE_TIME_DATA = "wst";
    private static final String WIFI_STATE_COUNT_DATA = "wsc";
    private static final String WIFI_SUPPL_STATE_TIME_DATA = "wsst";
    private static final String WIFI_SUPPL_STATE_COUNT_DATA = "wssc";
    private static final String WIFI_SIGNAL_STRENGTH_TIME_DATA = "wsgt";
    private static final String WIFI_SIGNAL_STRENGTH_COUNT_DATA = "wsgc";
    private static final String POWER_USE_SUMMARY_DATA = "pws";
    private static final String POWER_USE_ITEM_DATA = "pwi";
    private static final String DISCHARGE_STEP_DATA = "dsd";
    private static final String CHARGE_STEP_DATA = "csd";
    private static final String DISCHARGE_TIME_REMAIN_DATA = "dtr";
    private static final String CHARGE_TIME_REMAIN_DATA = "ctr";
    private static final String FLASHLIGHT_DATA = "fla";
    private static final String CAMERA_DATA = "cam";
    private static final String VIDEO_DATA = "vid";
    private static final String AUDIO_DATA = "aud";
    private static final String WIFI_MULTICAST_TOTAL_DATA = "wmct";
    private static final String WIFI_MULTICAST_DATA = "wmc";

    public static final String RESULT_RECEIVER_CONTROLLER_KEY = "controller_activity";

    private final StringBuilder mFormatBuilder = new StringBuilder(32);
    private final Formatter mFormatter = new Formatter(mFormatBuilder);

    private static final String CELLULAR_CONTROLLER_NAME = "Cellular";
    private static final String WIFI_CONTROLLER_NAME = "WiFi";

    
Indicates times spent by the uid at each cpu frequency in all process states.
Other types might include times spent in foreground, background etc.
/**
     * Indicates times spent by the uid at each cpu frequency in all process states.
     *
     * Other types might include times spent in foreground, background etc.
     */
    @VisibleForTesting
    public static final String UID_TIMES_TYPE_ALL = "A";

    
These are the thresholds for bucketing last time since a job was run for an app
that just moved to ACTIVE due to a launch. So if the last time a job ran was less
than 1 hour ago, then it's reasonably fresh, 2 hours ago, not so fresh and so
on.
/**
     * These are the thresholds for bucketing last time since a job was run for an app
     * that just moved to ACTIVE due to a launch. So if the last time a job ran was less
     * than 1 hour ago, then it's reasonably fresh, 2 hours ago, not so fresh and so
     * on.
     */
    public static final long[] JOB_FRESHNESS_BUCKETS = {
            1 * 60 * 60 * 1000L,
            2 * 60 * 60 * 1000L,
            4 * 60 * 60 * 1000L,
            8 * 60 * 60 * 1000L,
            Long.MAX_VALUE
    };

    
State for keeping track of counting information.
/**
     * State for keeping track of counting information.
     */
    public static abstract class Counter {

        
Returns the count associated with this Counter for the
selected type of statistics.
Params:
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT/**
         * Returns the count associated with this Counter for the
         * selected type of statistics.
         *
         * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT
         */
        public abstract int getCountLocked(int which);

        
Temporary for debugging.
/**
         * Temporary for debugging.
         */
        public abstract void logState(Printer pw, String prefix);
    }

    
State for keeping track of long counting information.
/**
     * State for keeping track of long counting information.
     */
    public static abstract class LongCounter {

        
Returns the count associated with this Counter for the
selected type of statistics.
Params:
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT/**
         * Returns the count associated with this Counter for the
         * selected type of statistics.
         *
         * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT
         */
        public abstract long getCountLocked(int which);

        
Temporary for debugging.
/**
         * Temporary for debugging.
         */
        public abstract void logState(Printer pw, String prefix);
    }

    
State for keeping track of array of long counting information.
/**
     * State for keeping track of array of long counting information.
     */
    public static abstract class LongCounterArray {
        
Returns the counts associated with this Counter for the
selected type of statistics.
Params:
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT/**
         * Returns the counts associated with this Counter for the
         * selected type of statistics.
         *
         * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT
         */
        public abstract long[] getCountsLocked(int which);

        
Temporary for debugging.
/**
         * Temporary for debugging.
         */
        public abstract void logState(Printer pw, String prefix);
    }

    
Container class that aggregates counters for transmit, receive, and idle state of a
radio controller.
/**
     * Container class that aggregates counters for transmit, receive, and idle state of a
     * radio controller.
     */
    public static abstract class ControllerActivityCounter {
        
Returns:
a non-null LongCounter representing time spent (milliseconds) in the idle state./**
         * @return a non-null {@link LongCounter} representing time spent (milliseconds) in the
         * idle state.
         */
        public abstract LongCounter getIdleTimeCounter();

        
Returns:
a non-null LongCounter representing time spent (milliseconds) in the scan state./**
         * @return a non-null {@link LongCounter} representing time spent (milliseconds) in the
         * scan state.
         */
        public abstract LongCounter getScanTimeCounter();

        
Returns:
a non-null LongCounter representing time spent (milliseconds) in the sleep state./**
         * @return a non-null {@link LongCounter} representing time spent (milliseconds) in the
         * sleep state.
         */
        public abstract LongCounter getSleepTimeCounter();

        
Returns:
a non-null LongCounter representing time spent (milliseconds) in the receive state./**
         * @return a non-null {@link LongCounter} representing time spent (milliseconds) in the
         * receive state.
         */
        public abstract LongCounter getRxTimeCounter();

        
An array of LongCounter, representing various transmit levels, where each level may draw a different amount of power. The levels themselves are controller-specific. 
Returns:
non-null array of LongCounters representing time spent (milliseconds) in various transmit level states./**
         * An array of {@link LongCounter}, representing various transmit levels, where each level
         * may draw a different amount of power. The levels themselves are controller-specific.
         * @return non-null array of {@link LongCounter}s representing time spent (milliseconds) in
         * various transmit level states.
         */
        public abstract LongCounter[] getTxTimeCounters();

        
Returns:
a non-null LongCounter representing the power consumed by the controller in all states, measured in milli-ampere-milliseconds (mAms). The counter may always yield a value of 0 if the device doesn't support power calculations./**
         * @return a non-null {@link LongCounter} representing the power consumed by the controller
         * in all states, measured in milli-ampere-milliseconds (mAms). The counter may always
         * yield a value of 0 if the device doesn't support power calculations.
         */
        public abstract LongCounter getPowerCounter();
    }

    
State for keeping track of timing information.
/**
     * State for keeping track of timing information.
     */
    public static abstract class Timer {

        
Returns the count associated with this Timer for the
selected type of statistics.
Params:
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT/**
         * Returns the count associated with this Timer for the
         * selected type of statistics.
         *
         * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT
         */
        public abstract int getCountLocked(int which);

        
Returns the total time in microseconds associated with this Timer for the
selected type of statistics.
Params:
elapsedRealtimeUs – current elapsed realtime of system in microseconds
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT
Returns:
a time in microseconds/**
         * Returns the total time in microseconds associated with this Timer for the
         * selected type of statistics.
         *
         * @param elapsedRealtimeUs current elapsed realtime of system in microseconds
         * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT
         * @return a time in microseconds
         */
        public abstract long getTotalTimeLocked(long elapsedRealtimeUs, int which);

        
Returns the total time in microseconds associated with this Timer since the
'mark' was last set.
Params:
elapsedRealtimeUs – current elapsed realtime of system in microseconds
Returns:
a time in microseconds/**
         * Returns the total time in microseconds associated with this Timer since the
         * 'mark' was last set.
         *
         * @param elapsedRealtimeUs current elapsed realtime of system in microseconds
         * @return a time in microseconds
         */
        public abstract long getTimeSinceMarkLocked(long elapsedRealtimeUs);

        
Returns the max duration if it is being tracked.
Not all Timer subclasses track the max, total, and current durations.
/**
         * Returns the max duration if it is being tracked.
         * Not all Timer subclasses track the max, total, and current durations.
         */
        public long getMaxDurationMsLocked(long elapsedRealtimeMs) {
            return -1;
        }

        
Returns the current time the timer has been active, if it is being tracked.
Not all Timer subclasses track the max, total, and current durations.
/**
         * Returns the current time the timer has been active, if it is being tracked.
         * Not all Timer subclasses track the max, total, and current durations.
         */
        public long getCurrentDurationMsLocked(long elapsedRealtimeMs) {
            return -1;
        }

        
Returns the total time the timer has been active, if it is being tracked.
Returns the total cumulative duration (i.e. sum of past durations) that this timer has
been on since reset.
This may differ from getTotalTimeLocked(elapsedRealtimeUs, STATS_SINCE_CHARGED)/1000 since,
depending on the Timer, getTotalTimeLocked may represent the total 'blamed' or 'pooled'
time, rather than the actual time. By contrast, getTotalDurationMsLocked always gives
the actual total time.
Not all Timer subclasses track the max, total, and current durations.
/**
         * Returns the total time the timer has been active, if it is being tracked.
         *
         * Returns the total cumulative duration (i.e. sum of past durations) that this timer has
         * been on since reset.
         * This may differ from getTotalTimeLocked(elapsedRealtimeUs, STATS_SINCE_CHARGED)/1000 since,
         * depending on the Timer, getTotalTimeLocked may represent the total 'blamed' or 'pooled'
         * time, rather than the actual time. By contrast, getTotalDurationMsLocked always gives
         * the actual total time.
         * Not all Timer subclasses track the max, total, and current durations.
         */
        public long getTotalDurationMsLocked(long elapsedRealtimeMs) {
            return -1;
        }

        
Returns the secondary Timer held by the Timer, if one exists. This secondary timer may be
used, for example, for tracking background usage. Secondary timers are never pooled.
Not all Timer subclasses have a secondary timer; those that don't return null.
/**
         * Returns the secondary Timer held by the Timer, if one exists. This secondary timer may be
         * used, for example, for tracking background usage. Secondary timers are never pooled.
         *
         * Not all Timer subclasses have a secondary timer; those that don't return null.
         */
        public Timer getSubTimer() {
            return null;
        }

        
Returns whether the timer is currently running.  Some types of timers
(e.g. BatchTimers) don't know whether the event is currently active,
and report false.
/**
         * Returns whether the timer is currently running.  Some types of timers
         * (e.g. BatchTimers) don't know whether the event is currently active,
         * and report false.
         */
        public boolean isRunningLocked() {
            return false;
        }

        
Temporary for debugging.
/**
         * Temporary for debugging.
         */
        public abstract void logState(Printer pw, String prefix);
    }

    
Maps the ActivityManager procstate into corresponding BatteryStats procstate.
/**
     * Maps the ActivityManager procstate into corresponding BatteryStats procstate.
     */
    public static int mapToInternalProcessState(int procState) {
        if (procState == ActivityManager.PROCESS_STATE_NONEXISTENT) {
            return ActivityManager.PROCESS_STATE_NONEXISTENT;
        } else if (procState == ActivityManager.PROCESS_STATE_TOP) {
            return Uid.PROCESS_STATE_TOP;
        } else if (procState == ActivityManager.PROCESS_STATE_FOREGROUND_SERVICE) {
            // State when app has put itself in the foreground.
            return Uid.PROCESS_STATE_FOREGROUND_SERVICE;
        } else if (procState <= ActivityManager.PROCESS_STATE_IMPORTANT_FOREGROUND) {
            // Persistent and other foreground states go here.
            return Uid.PROCESS_STATE_FOREGROUND;
        } else if (procState <= ActivityManager.PROCESS_STATE_RECEIVER) {
            return Uid.PROCESS_STATE_BACKGROUND;
        } else if (procState <= ActivityManager.PROCESS_STATE_TOP_SLEEPING) {
            return Uid.PROCESS_STATE_TOP_SLEEPING;
        } else if (procState <= ActivityManager.PROCESS_STATE_HEAVY_WEIGHT) {
            return Uid.PROCESS_STATE_HEAVY_WEIGHT;
        } else {
            return Uid.PROCESS_STATE_CACHED;
        }
    }

    
The statistics associated with a particular uid.
/**
     * The statistics associated with a particular uid.
     */
    public static abstract class Uid {

        
Returns a mapping containing wakelock statistics.
Returns:
a Map from Strings to Uid.Wakelock objects./**
         * Returns a mapping containing wakelock statistics.
         *
         * @return a Map from Strings to Uid.Wakelock objects.
         */
        public abstract ArrayMap<String, ? extends Wakelock> getWakelockStats();

        
Returns the WiFi Multicast Wakelock statistics.
Returns:
a Timer Object for the per uid Multicast statistics./**
         * Returns the WiFi Multicast Wakelock statistics.
         *
         * @return a Timer Object for the per uid Multicast statistics.
         */
        public abstract Timer getMulticastWakelockStats();

        
Returns a mapping containing sync statistics.
Returns:
a Map from Strings to Timer objects./**
         * Returns a mapping containing sync statistics.
         *
         * @return a Map from Strings to Timer objects.
         */
        public abstract ArrayMap<String, ? extends Timer> getSyncStats();

        
Returns a mapping containing scheduled job statistics.
Returns:
a Map from Strings to Timer objects./**
         * Returns a mapping containing scheduled job statistics.
         *
         * @return a Map from Strings to Timer objects.
         */
        public abstract ArrayMap<String, ? extends Timer> getJobStats();

        
Returns statistics about how jobs have completed.
Returns:
A Map of String job names to completion type -> count mapping./**
         * Returns statistics about how jobs have completed.
         *
         * @return A Map of String job names to completion type -> count mapping.
         */
        public abstract ArrayMap<String, SparseIntArray> getJobCompletionStats();

        
The statistics associated with a particular wake lock.
/**
         * The statistics associated with a particular wake lock.
         */
        public static abstract class Wakelock {
            public abstract Timer getWakeTime(int type);
        }

        
The cumulative time the uid spent holding any partial wakelocks. This will generally
differ from summing over the Wakelocks in getWakelockStats since the latter may have
wakelocks that overlap in time (and therefore over-counts).
/**
         * The cumulative time the uid spent holding any partial wakelocks. This will generally
         * differ from summing over the Wakelocks in getWakelockStats since the latter may have
         * wakelocks that overlap in time (and therefore over-counts).
         */
        public abstract Timer getAggregatedPartialWakelockTimer();

        
Returns a mapping containing sensor statistics.
Returns:
a Map from Integer sensor ids to Uid.Sensor objects./**
         * Returns a mapping containing sensor statistics.
         *
         * @return a Map from Integer sensor ids to Uid.Sensor objects.
         */
        public abstract SparseArray<? extends Sensor> getSensorStats();

        
Returns a mapping containing active process data.
/**
         * Returns a mapping containing active process data.
         */
        public abstract SparseArray<? extends Pid> getPidStats();

        
Returns a mapping containing process statistics.
Returns:
a Map from Strings to Uid.Proc objects./**
         * Returns a mapping containing process statistics.
         *
         * @return a Map from Strings to Uid.Proc objects.
         */
        public abstract ArrayMap<String, ? extends Proc> getProcessStats();

        
Returns a mapping containing package statistics.
Returns:
a Map from Strings to Uid.Pkg objects./**
         * Returns a mapping containing package statistics.
         *
         * @return a Map from Strings to Uid.Pkg objects.
         */
        public abstract ArrayMap<String, ? extends Pkg> getPackageStats();

        public abstract ControllerActivityCounter getWifiControllerActivity();
        public abstract ControllerActivityCounter getBluetoothControllerActivity();
        public abstract ControllerActivityCounter getModemControllerActivity();

        
{@hide}
/**
         * {@hide}
         */
        public abstract int getUid();

        public abstract void noteWifiRunningLocked(long elapsedRealtime);
        public abstract void noteWifiStoppedLocked(long elapsedRealtime);
        public abstract void noteFullWifiLockAcquiredLocked(long elapsedRealtime);
        public abstract void noteFullWifiLockReleasedLocked(long elapsedRealtime);
        public abstract void noteWifiScanStartedLocked(long elapsedRealtime);
        public abstract void noteWifiScanStoppedLocked(long elapsedRealtime);
        public abstract void noteWifiBatchedScanStartedLocked(int csph, long elapsedRealtime);
        public abstract void noteWifiBatchedScanStoppedLocked(long elapsedRealtime);
        public abstract void noteWifiMulticastEnabledLocked(long elapsedRealtime);
        public abstract void noteWifiMulticastDisabledLocked(long elapsedRealtime);
        public abstract void noteActivityResumedLocked(long elapsedRealtime);
        public abstract void noteActivityPausedLocked(long elapsedRealtime);
        public abstract long getWifiRunningTime(long elapsedRealtimeUs, int which);
        public abstract long getFullWifiLockTime(long elapsedRealtimeUs, int which);
        public abstract long getWifiScanTime(long elapsedRealtimeUs, int which);
        public abstract int getWifiScanCount(int which);
        
Returns the timer keeping track of wifi scans.
/**
         * Returns the timer keeping track of wifi scans.
         */
        public abstract Timer getWifiScanTimer();
        public abstract int getWifiScanBackgroundCount(int which);
        public abstract long getWifiScanActualTime(long elapsedRealtimeUs);
        public abstract long getWifiScanBackgroundTime(long elapsedRealtimeUs);
        
Returns the timer keeping track of background wifi scans.
/**
         * Returns the timer keeping track of background wifi scans.
         */
        public abstract Timer getWifiScanBackgroundTimer();
        public abstract long getWifiBatchedScanTime(int csphBin, long elapsedRealtimeUs, int which);
        public abstract int getWifiBatchedScanCount(int csphBin, int which);
        public abstract long getWifiMulticastTime(long elapsedRealtimeUs, int which);
        public abstract Timer getAudioTurnedOnTimer();
        public abstract Timer getVideoTurnedOnTimer();
        public abstract Timer getFlashlightTurnedOnTimer();
        public abstract Timer getCameraTurnedOnTimer();
        public abstract Timer getForegroundActivityTimer();

        
Returns the timer keeping track of Foreground Service time
/**
         * Returns the timer keeping track of Foreground Service time
         */
        public abstract Timer getForegroundServiceTimer();
        public abstract Timer getBluetoothScanTimer();
        public abstract Timer getBluetoothScanBackgroundTimer();
        public abstract Timer getBluetoothUnoptimizedScanTimer();
        public abstract Timer getBluetoothUnoptimizedScanBackgroundTimer();
        public abstract Counter getBluetoothScanResultCounter();
        public abstract Counter getBluetoothScanResultBgCounter();

        public abstract long[] getCpuFreqTimes(int which);
        public abstract long[] getScreenOffCpuFreqTimes(int which);
        
Returns cpu active time of an uid.
/**
         * Returns cpu active time of an uid.
         */
        public abstract long getCpuActiveTime();
        
Returns cpu times of an uid on each cluster
/**
         * Returns cpu times of an uid on each cluster
         */
        public abstract long[] getCpuClusterTimes();

        
Returns cpu times of an uid at a particular process state.
/**
         * Returns cpu times of an uid at a particular process state.
         */
        public abstract long[] getCpuFreqTimes(int which, int procState);
        
Returns cpu times of an uid while the screen if off at a particular process state.
/**
         * Returns cpu times of an uid while the screen if off at a particular process state.
         */
        public abstract long[] getScreenOffCpuFreqTimes(int which, int procState);

        // Note: the following times are disjoint.  They can be added together to find the
        // total time a uid has had any processes running at all.

        
Time this uid has any processes in the top state.
/**
         * Time this uid has any processes in the top state.
         */
        public static final int PROCESS_STATE_TOP = 0;
        
Time this uid has any process with a started foreground service, but
none in the "top" state.
/**
         * Time this uid has any process with a started foreground service, but
         * none in the "top" state.
         */
        public static final int PROCESS_STATE_FOREGROUND_SERVICE = 1;
        
Time this uid has any process in an active foreground state, but none in the
"foreground service" or better state. Persistent and other foreground states go here.
/**
         * Time this uid has any process in an active foreground state, but none in the
         * "foreground service" or better state. Persistent and other foreground states go here.
         */
        public static final int PROCESS_STATE_FOREGROUND = 2;
        
Time this uid has any process in an active background state, but none in the
"foreground" or better state.
/**
         * Time this uid has any process in an active background state, but none in the
         * "foreground" or better state.
         */
        public static final int PROCESS_STATE_BACKGROUND = 3;
        
Time this uid has any process that is top while the device is sleeping, but not
active for any other reason.  We kind-of consider it a kind of cached process
for execution restrictions.
/**
         * Time this uid has any process that is top while the device is sleeping, but not
         * active for any other reason.  We kind-of consider it a kind of cached process
         * for execution restrictions.
         */
        public static final int PROCESS_STATE_TOP_SLEEPING = 4;
        
Time this uid has any process that is in the background but it has an activity
marked as "can't save state".  This is essentially a cached process, though the
system will try much harder than normal to avoid killing it.
/**
         * Time this uid has any process that is in the background but it has an activity
         * marked as "can't save state".  This is essentially a cached process, though the
         * system will try much harder than normal to avoid killing it.
         */
        public static final int PROCESS_STATE_HEAVY_WEIGHT = 5;
        
Time this uid has any processes that are sitting around cached, not in one of the
other active states.
/**
         * Time this uid has any processes that are sitting around cached, not in one of the
         * other active states.
         */
        public static final int PROCESS_STATE_CACHED = 6;
        
Total number of process states we track.
/**
         * Total number of process states we track.
         */
        public static final int NUM_PROCESS_STATE = 7;

        // Used in dump
        static final String[] PROCESS_STATE_NAMES = {
                "Top", "Fg Service", "Foreground", "Background", "Top Sleeping", "Heavy Weight",
                "Cached"
        };

        // Used in checkin dump
        @VisibleForTesting
        public static final String[] UID_PROCESS_TYPES = {
                "T",  // TOP
                "FS", // FOREGROUND_SERVICE
                "F",  // FOREGROUND
                "B",  // BACKGROUND
                "TS", // TOP_SLEEPING
                "HW",  // HEAVY_WEIGHT
                "C"   // CACHED
        };

        
When the process exits one of these states, we need to make sure cpu time in this state
is not attributed to any non-critical process states.
/**
         * When the process exits one of these states, we need to make sure cpu time in this state
         * is not attributed to any non-critical process states.
         */
        public static final int[] CRITICAL_PROC_STATES = {
            PROCESS_STATE_TOP, PROCESS_STATE_FOREGROUND_SERVICE, PROCESS_STATE_FOREGROUND
        };

        public abstract long getProcessStateTime(int state, long elapsedRealtimeUs, int which);
        public abstract Timer getProcessStateTimer(int state);

        public abstract Timer getVibratorOnTimer();

        public static final int NUM_WIFI_BATCHED_SCAN_BINS = 5;

        
Note that these must match the constants in android.os.PowerManager.
Also, if the user activity types change, the BatteryStatsImpl.VERSION must
also be bumped.
/**
         * Note that these must match the constants in android.os.PowerManager.
         * Also, if the user activity types change, the BatteryStatsImpl.VERSION must
         * also be bumped.
         */
        static final String[] USER_ACTIVITY_TYPES = {
            "other", "button", "touch", "accessibility"
        };

        public static final int NUM_USER_ACTIVITY_TYPES = 4;

        public abstract void noteUserActivityLocked(int type);
        public abstract boolean hasUserActivity();
        public abstract int getUserActivityCount(int type, int which);

        public abstract boolean hasNetworkActivity();
        public abstract long getNetworkActivityBytes(int type, int which);
        public abstract long getNetworkActivityPackets(int type, int which);
        public abstract long getMobileRadioActiveTime(int which);
        public abstract int getMobileRadioActiveCount(int which);

        
Get the total cpu time (in microseconds) this UID had processes executing in userspace.
/**
         * Get the total cpu time (in microseconds) this UID had processes executing in userspace.
         */
        public abstract long getUserCpuTimeUs(int which);

        
Get the total cpu time (in microseconds) this UID had processes executing kernel syscalls.
/**
         * Get the total cpu time (in microseconds) this UID had processes executing kernel syscalls.
         */
        public abstract long getSystemCpuTimeUs(int which);

        
Returns the approximate cpu time (in microseconds) spent at a certain CPU speed for a
given CPU cluster.
Params:
cluster – the index of the CPU cluster.
step – the index of the CPU speed. This is not the actual speed of the CPU.
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
See Also:
PowerProfile.getNumCpuClusters()
PowerProfile.getNumSpeedStepsInCpuCluster(int)/**
         * Returns the approximate cpu time (in microseconds) spent at a certain CPU speed for a
         * given CPU cluster.
         * @param cluster the index of the CPU cluster.
         * @param step the index of the CPU speed. This is not the actual speed of the CPU.
         * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
         * @see com.android.internal.os.PowerProfile#getNumCpuClusters()
         * @see com.android.internal.os.PowerProfile#getNumSpeedStepsInCpuCluster(int)
         */
        public abstract long getTimeAtCpuSpeed(int cluster, int step, int which);

        
Returns the number of times this UID woke up the Application Processor to
process a mobile radio packet.
Params:
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT./**
         * Returns the number of times this UID woke up the Application Processor to
         * process a mobile radio packet.
         * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
         */
        public abstract long getMobileRadioApWakeupCount(int which);

        
Returns the number of times this UID woke up the Application Processor to
process a WiFi packet.
Params:
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT./**
         * Returns the number of times this UID woke up the Application Processor to
         * process a WiFi packet.
         * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
         */
        public abstract long getWifiRadioApWakeupCount(int which);

        
Appends the deferred jobs data to the StringBuilder passed in, in checkin format
Params:
sb – StringBuilder that can be overwritten with the deferred jobs data
which – one of STATS_*/**
         * Appends the deferred jobs data to the StringBuilder passed in, in checkin format
         * @param sb StringBuilder that can be overwritten with the deferred jobs data
         * @param which one of STATS_*
         */
        public abstract void getDeferredJobsCheckinLineLocked(StringBuilder sb, int which);

        
Appends the deferred jobs data to the StringBuilder passed in
Params:
sb – StringBuilder that can be overwritten with the deferred jobs data
which – one of STATS_*/**
         * Appends the deferred jobs data to the StringBuilder passed in
         * @param sb StringBuilder that can be overwritten with the deferred jobs data
         * @param which one of STATS_*
         */
        public abstract void getDeferredJobsLineLocked(StringBuilder sb, int which);

        public static abstract class Sensor {
            /*
             * FIXME: it's not correct to use this magic value because it
             * could clash with a sensor handle (which are defined by
             * the sensor HAL, and therefore out of our control
             */
            // Magic sensor number for the GPS.
            public static final int GPS = -10000;

            public abstract int getHandle();

            public abstract Timer getSensorTime();

            
Returns a Timer for sensor usage when app is in the background. /** Returns a Timer for sensor usage when app is in the background. */
            public abstract Timer getSensorBackgroundTime();
        }

        public class Pid {
            public int mWakeNesting;
            public long mWakeSumMs;
            public long mWakeStartMs;
        }

        
The statistics associated with a particular process.
/**
         * The statistics associated with a particular process.
         */
        public static abstract class Proc {

            public static class ExcessivePower {
                public static final int TYPE_WAKE = 1;
                public static final int TYPE_CPU = 2;

                public int type;
                public long overTime;
                public long usedTime;
            }

            
Returns true if this process is still active in the battery stats.
/**
             * Returns true if this process is still active in the battery stats.
             */
            public abstract boolean isActive();

            
Returns the total time (in milliseconds) spent executing in user code.
Params:
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT./**
             * Returns the total time (in milliseconds) spent executing in user code.
             *
             * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
             */
            public abstract long getUserTime(int which);

            
Returns the total time (in milliseconds) spent executing in system code.
Params:
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT./**
             * Returns the total time (in milliseconds) spent executing in system code.
             *
             * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
             */
            public abstract long getSystemTime(int which);

            
Returns the number of times the process has been started.
Params:
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT./**
             * Returns the number of times the process has been started.
             *
             * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
             */
            public abstract int getStarts(int which);

            
Returns the number of times the process has crashed.
Params:
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT./**
             * Returns the number of times the process has crashed.
             *
             * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
             */
            public abstract int getNumCrashes(int which);

            
Returns the number of times the process has ANRed.
Params:
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT./**
             * Returns the number of times the process has ANRed.
             *
             * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
             */
            public abstract int getNumAnrs(int which);

            
Returns the cpu time (milliseconds) spent while the process was in the foreground.
Params:
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
Returns:
foreground cpu time in microseconds/**
             * Returns the cpu time (milliseconds) spent while the process was in the foreground.
             * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
             * @return foreground cpu time in microseconds
             */
            public abstract long getForegroundTime(int which);

            public abstract int countExcessivePowers();

            public abstract ExcessivePower getExcessivePower(int i);
        }

        
The statistics associated with a particular package.
/**
         * The statistics associated with a particular package.
         */
        public static abstract class Pkg {

            
Returns information about all wakeup alarms that have been triggered for this
package.  The mapping keys are tag names for the alarms, the counter contains
the number of times the alarm was triggered while on battery.
/**
             * Returns information about all wakeup alarms that have been triggered for this
             * package.  The mapping keys are tag names for the alarms, the counter contains
             * the number of times the alarm was triggered while on battery.
             */
            public abstract ArrayMap<String, ? extends Counter> getWakeupAlarmStats();

            
Returns a mapping containing service statistics.
/**
             * Returns a mapping containing service statistics.
             */
            public abstract ArrayMap<String, ? extends Serv> getServiceStats();

            
The statistics associated with a particular service.
/**
             * The statistics associated with a particular service.
             */
            public static abstract class Serv {

                
Returns the amount of time spent started.
Params:
batteryUptime – elapsed uptime on battery in microseconds.
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
Returns:
/**
                 * Returns the amount of time spent started.
                 *
                 * @param batteryUptime elapsed uptime on battery in microseconds.
                 * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
                 * @return
                 */
                public abstract long getStartTime(long batteryUptime, int which);

                
Returns the total number of times startService() has been called.
Params:
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT./**
                 * Returns the total number of times startService() has been called.
                 *
                 * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
                 */
                public abstract int getStarts(int which);

                
Returns the total number times the service has been launched.
Params:
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT./**
                 * Returns the total number times the service has been launched.
                 *
                 * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
                 */
                public abstract int getLaunches(int which);
            }
        }
    }

    public static final class LevelStepTracker {
        public long mLastStepTime = -1;
        public int mNumStepDurations;
        public final long[] mStepDurations;

        public LevelStepTracker(int maxLevelSteps) {
            mStepDurations = new long[maxLevelSteps];
        }

        public LevelStepTracker(int numSteps, long[] steps) {
            mNumStepDurations = numSteps;
            mStepDurations = new long[numSteps];
            System.arraycopy(steps, 0, mStepDurations, 0, numSteps);
        }

        public long getDurationAt(int index) {
            return mStepDurations[index] & STEP_LEVEL_TIME_MASK;
        }

        public int getLevelAt(int index) {
            return (int)((mStepDurations[index] & STEP_LEVEL_LEVEL_MASK)
                    >> STEP_LEVEL_LEVEL_SHIFT);
        }

        public int getInitModeAt(int index) {
            return (int)((mStepDurations[index] & STEP_LEVEL_INITIAL_MODE_MASK)
                    >> STEP_LEVEL_INITIAL_MODE_SHIFT);
        }

        public int getModModeAt(int index) {
            return (int)((mStepDurations[index] & STEP_LEVEL_MODIFIED_MODE_MASK)
                    >> STEP_LEVEL_MODIFIED_MODE_SHIFT);
        }

        private void appendHex(long val, int topOffset, StringBuilder out) {
            boolean hasData = false;
            while (topOffset >= 0) {
                int digit = (int)( (val>>topOffset) & 0xf );
                topOffset -= 4;
                if (!hasData && digit == 0) {
                    continue;
                }
                hasData = true;
                if (digit >= 0 && digit <= 9) {
                    out.append((char)('0' + digit));
                } else {
                    out.append((char)('a' + digit - 10));
                }
            }
        }

        public void encodeEntryAt(int index, StringBuilder out) {
            long item = mStepDurations[index];
            long duration = item & STEP_LEVEL_TIME_MASK;
            int level = (int)((item & STEP_LEVEL_LEVEL_MASK)
                    >> STEP_LEVEL_LEVEL_SHIFT);
            int initMode = (int)((item & STEP_LEVEL_INITIAL_MODE_MASK)
                    >> STEP_LEVEL_INITIAL_MODE_SHIFT);
            int modMode = (int)((item & STEP_LEVEL_MODIFIED_MODE_MASK)
                    >> STEP_LEVEL_MODIFIED_MODE_SHIFT);
            switch ((initMode&STEP_LEVEL_MODE_SCREEN_STATE) + 1) {
                case Display.STATE_OFF: out.append('f'); break;
                case Display.STATE_ON: out.append('o'); break;
                case Display.STATE_DOZE: out.append('d'); break;
                case Display.STATE_DOZE_SUSPEND: out.append('z'); break;
            }
            if ((initMode&STEP_LEVEL_MODE_POWER_SAVE) != 0) {
                out.append('p');
            }
            if ((initMode&STEP_LEVEL_MODE_DEVICE_IDLE) != 0) {
                out.append('i');
            }
            switch ((modMode&STEP_LEVEL_MODE_SCREEN_STATE) + 1) {
                case Display.STATE_OFF: out.append('F'); break;
                case Display.STATE_ON: out.append('O'); break;
                case Display.STATE_DOZE: out.append('D'); break;
                case Display.STATE_DOZE_SUSPEND: out.append('Z'); break;
            }
            if ((modMode&STEP_LEVEL_MODE_POWER_SAVE) != 0) {
                out.append('P');
            }
            if ((modMode&STEP_LEVEL_MODE_DEVICE_IDLE) != 0) {
                out.append('I');
            }
            out.append('-');
            appendHex(level, 4, out);
            out.append('-');
            appendHex(duration, STEP_LEVEL_LEVEL_SHIFT-4, out);
        }

        public void decodeEntryAt(int index, String value) {
            final int N = value.length();
            int i = 0;
            char c;
            long out = 0;
            while (i < N && (c=value.charAt(i)) != '-') {
                i++;
                switch (c) {
                    case 'f': out |= (((long)Display.STATE_OFF-1)<<STEP_LEVEL_INITIAL_MODE_SHIFT);
                        break;
                    case 'o': out |= (((long)Display.STATE_ON-1)<<STEP_LEVEL_INITIAL_MODE_SHIFT);
                        break;
                    case 'd': out |= (((long)Display.STATE_DOZE-1)<<STEP_LEVEL_INITIAL_MODE_SHIFT);
                        break;
                    case 'z': out |= (((long)Display.STATE_DOZE_SUSPEND-1)
                            << STEP_LEVEL_INITIAL_MODE_SHIFT);
                        break;
                    case 'p': out |= (((long)STEP_LEVEL_MODE_POWER_SAVE)
                            << STEP_LEVEL_INITIAL_MODE_SHIFT);
                        break;
                    case 'i': out |= (((long)STEP_LEVEL_MODE_DEVICE_IDLE)
                            << STEP_LEVEL_INITIAL_MODE_SHIFT);
                        break;
                    case 'F': out |= (((long)Display.STATE_OFF-1)<<STEP_LEVEL_MODIFIED_MODE_SHIFT);
                        break;
                    case 'O': out |= (((long)Display.STATE_ON-1)<<STEP_LEVEL_MODIFIED_MODE_SHIFT);
                        break;
                    case 'D': out |= (((long)Display.STATE_DOZE-1)<<STEP_LEVEL_MODIFIED_MODE_SHIFT);
                        break;
                    case 'Z': out |= (((long)Display.STATE_DOZE_SUSPEND-1)
                            << STEP_LEVEL_MODIFIED_MODE_SHIFT);
                        break;
                    case 'P': out |= (((long)STEP_LEVEL_MODE_POWER_SAVE)
                            << STEP_LEVEL_MODIFIED_MODE_SHIFT);
                        break;
                    case 'I': out |= (((long)STEP_LEVEL_MODE_DEVICE_IDLE)
                            << STEP_LEVEL_MODIFIED_MODE_SHIFT);
                        break;
                }
            }
            i++;
            long level = 0;
            while (i < N && (c=value.charAt(i)) != '-') {
                i++;
                level <<= 4;
                if (c >= '0' && c <= '9') {
                    level += c - '0';
                } else if (c >= 'a' && c <= 'f') {
                    level += c - 'a' + 10;
                } else if (c >= 'A' && c <= 'F') {
                    level += c - 'A' + 10;
                }
            }
            i++;
            out |= (level << STEP_LEVEL_LEVEL_SHIFT) & STEP_LEVEL_LEVEL_MASK;
            long duration = 0;
            while (i < N && (c=value.charAt(i)) != '-') {
                i++;
                duration <<= 4;
                if (c >= '0' && c <= '9') {
                    duration += c - '0';
                } else if (c >= 'a' && c <= 'f') {
                    duration += c - 'a' + 10;
                } else if (c >= 'A' && c <= 'F') {
                    duration += c - 'A' + 10;
                }
            }
            mStepDurations[index] = out | (duration & STEP_LEVEL_TIME_MASK);
        }

        public void init() {
            mLastStepTime = -1;
            mNumStepDurations = 0;
        }

        public void clearTime() {
            mLastStepTime = -1;
        }

        public long computeTimePerLevel() {
            final long[] steps = mStepDurations;
            final int numSteps = mNumStepDurations;

            // For now we'll do a simple average across all steps.
            if (numSteps <= 0) {
                return -1;
            }
            long total = 0;
            for (int i=0; i<numSteps; i++) {
                total += steps[i] & STEP_LEVEL_TIME_MASK;
            }
            return total / numSteps;
            /*
            long[] buckets = new long[numSteps];
            int numBuckets = 0;
            int numToAverage = 4;
            int i = 0;
            while (i < numSteps) {
                long totalTime = 0;
                int num = 0;
                for (int j=0; j<numToAverage && (i+j)<numSteps; j++) {
                    totalTime += steps[i+j] & STEP_LEVEL_TIME_MASK;
                    num++;
                }
                buckets[numBuckets] = totalTime / num;
                numBuckets++;
                numToAverage *= 2;
                i += num;
            }
            if (numBuckets < 1) {
                return -1;
            }
            long averageTime = buckets[numBuckets-1];
            for (i=numBuckets-2; i>=0; i--) {
                averageTime = (averageTime + buckets[i]) / 2;
            }
            return averageTime;
            */
        }

        public long computeTimeEstimate(long modesOfInterest, long modeValues,
                int[] outNumOfInterest) {
            final long[] steps = mStepDurations;
            final int count = mNumStepDurations;
            if (count <= 0) {
                return -1;
            }
            long total = 0;
            int numOfInterest = 0;
            for (int i=0; i<count; i++) {
                long initMode = (steps[i] & STEP_LEVEL_INITIAL_MODE_MASK)
                        >> STEP_LEVEL_INITIAL_MODE_SHIFT;
                long modMode = (steps[i] & STEP_LEVEL_MODIFIED_MODE_MASK)
                        >> STEP_LEVEL_MODIFIED_MODE_SHIFT;
                // If the modes of interest didn't change during this step period...
                if ((modMode&modesOfInterest) == 0) {
                    // And the mode values during this period match those we are measuring...
                    if ((initMode&modesOfInterest) == modeValues) {
                        // Then this can be used to estimate the total time!
                        numOfInterest++;
                        total += steps[i] & STEP_LEVEL_TIME_MASK;
                    }
                }
            }
            if (numOfInterest <= 0) {
                return -1;
            }

            if (outNumOfInterest != null) {
                outNumOfInterest[0] = numOfInterest;
            }

            // The estimated time is the average time we spend in each level, multipled
            // by 100 -- the total number of battery levels
            return (total / numOfInterest) * 100;
        }

        public void addLevelSteps(int numStepLevels, long modeBits, long elapsedRealtime) {
            int stepCount = mNumStepDurations;
            final long lastStepTime = mLastStepTime;
            if (lastStepTime >= 0 && numStepLevels > 0) {
                final long[] steps = mStepDurations;
                long duration = elapsedRealtime - lastStepTime;
                for (int i=0; i<numStepLevels; i++) {
                    System.arraycopy(steps, 0, steps, 1, steps.length-1);
                    long thisDuration = duration / (numStepLevels-i);
                    duration -= thisDuration;
                    if (thisDuration > STEP_LEVEL_TIME_MASK) {
                        thisDuration = STEP_LEVEL_TIME_MASK;
                    }
                    steps[0] = thisDuration | modeBits;
                }
                stepCount += numStepLevels;
                if (stepCount > steps.length) {
                    stepCount = steps.length;
                }
            }
            mNumStepDurations = stepCount;
            mLastStepTime = elapsedRealtime;
        }

        public void readFromParcel(Parcel in) {
            final int N = in.readInt();
            if (N > mStepDurations.length) {
                throw new ParcelFormatException("more step durations than available: " + N);
            }
            mNumStepDurations = N;
            for (int i=0; i<N; i++) {
                mStepDurations[i] = in.readLong();
            }
        }

        public void writeToParcel(Parcel out) {
            final int N = mNumStepDurations;
            out.writeInt(N);
            for (int i=0; i<N; i++) {
                out.writeLong(mStepDurations[i]);
            }
        }
    }

    public static final class PackageChange {
        public String mPackageName;
        public boolean mUpdate;
        public long mVersionCode;
    }

    public static final class DailyItem {
        public long mStartTime;
        public long mEndTime;
        public LevelStepTracker mDischargeSteps;
        public LevelStepTracker mChargeSteps;
        public ArrayList<PackageChange> mPackageChanges;
    }

    public abstract DailyItem getDailyItemLocked(int daysAgo);

    public abstract long getCurrentDailyStartTime();

    public abstract long getNextMinDailyDeadline();

    public abstract long getNextMaxDailyDeadline();

    public abstract long[] getCpuFreqs();

    public final static class HistoryTag {
        public String string;
        public int uid;

        public int poolIdx;

        public void setTo(HistoryTag o) {
            string = o.string;
            uid = o.uid;
            poolIdx = o.poolIdx;
        }

        public void setTo(String _string, int _uid) {
            string = _string;
            uid = _uid;
            poolIdx = -1;
        }

        public void writeToParcel(Parcel dest, int flags) {
            dest.writeString(string);
            dest.writeInt(uid);
        }

        public void readFromParcel(Parcel src) {
            string = src.readString();
            uid = src.readInt();
            poolIdx = -1;
        }

        @Override
        public boolean equals(Object o) {
            if (this == o) return true;
            if (o == null || getClass() != o.getClass()) return false;

            HistoryTag that = (HistoryTag) o;

            if (uid != that.uid) return false;
            if (!string.equals(that.string)) return false;

            return true;
        }

        @Override
        public int hashCode() {
            int result = string.hashCode();
            result = 31 * result + uid;
            return result;
        }
    }

    
Optional detailed information that can go into a history step.  This is typically
generated each time the battery level changes.
/**
     * Optional detailed information that can go into a history step.  This is typically
     * generated each time the battery level changes.
     */
    public final static class HistoryStepDetails {
        // Time (in 1/100 second) spent in user space and the kernel since the last step.
        public int userTime;
        public int systemTime;

        // Top three apps using CPU in the last step, with times in 1/100 second.
        public int appCpuUid1;
        public int appCpuUTime1;
        public int appCpuSTime1;
        public int appCpuUid2;
        public int appCpuUTime2;
        public int appCpuSTime2;
        public int appCpuUid3;
        public int appCpuUTime3;
        public int appCpuSTime3;

        // Information from /proc/stat
        public int statUserTime;
        public int statSystemTime;
        public int statIOWaitTime;
        public int statIrqTime;
        public int statSoftIrqTime;
        public int statIdlTime;

        // Platform-level low power state stats
        public String statPlatformIdleState;
        public String statSubsystemPowerState;

        public HistoryStepDetails() {
            clear();
        }

        public void clear() {
            userTime = systemTime = 0;
            appCpuUid1 = appCpuUid2 = appCpuUid3 = -1;
            appCpuUTime1 = appCpuSTime1 = appCpuUTime2 = appCpuSTime2
                    = appCpuUTime3 = appCpuSTime3 = 0;
        }

        public void writeToParcel(Parcel out) {
            out.writeInt(userTime);
            out.writeInt(systemTime);
            out.writeInt(appCpuUid1);
            out.writeInt(appCpuUTime1);
            out.writeInt(appCpuSTime1);
            out.writeInt(appCpuUid2);
            out.writeInt(appCpuUTime2);
            out.writeInt(appCpuSTime2);
            out.writeInt(appCpuUid3);
            out.writeInt(appCpuUTime3);
            out.writeInt(appCpuSTime3);
            out.writeInt(statUserTime);
            out.writeInt(statSystemTime);
            out.writeInt(statIOWaitTime);
            out.writeInt(statIrqTime);
            out.writeInt(statSoftIrqTime);
            out.writeInt(statIdlTime);
            out.writeString(statPlatformIdleState);
            out.writeString(statSubsystemPowerState);
        }

        public void readFromParcel(Parcel in) {
            userTime = in.readInt();
            systemTime = in.readInt();
            appCpuUid1 = in.readInt();
            appCpuUTime1 = in.readInt();
            appCpuSTime1 = in.readInt();
            appCpuUid2 = in.readInt();
            appCpuUTime2 = in.readInt();
            appCpuSTime2 = in.readInt();
            appCpuUid3 = in.readInt();
            appCpuUTime3 = in.readInt();
            appCpuSTime3 = in.readInt();
            statUserTime = in.readInt();
            statSystemTime = in.readInt();
            statIOWaitTime = in.readInt();
            statIrqTime = in.readInt();
            statSoftIrqTime = in.readInt();
            statIdlTime = in.readInt();
            statPlatformIdleState = in.readString();
            statSubsystemPowerState = in.readString();
        }
    }

    public final static class HistoryItem implements Parcelable {
        public HistoryItem next;

        // The time of this event in milliseconds, as per SystemClock.elapsedRealtime().
        public long time;

        public static final byte CMD_UPDATE = 0;        // These can be written as deltas
        public static final byte CMD_NULL = -1;
        public static final byte CMD_START = 4;
        public static final byte CMD_CURRENT_TIME = 5;
        public static final byte CMD_OVERFLOW = 6;
        public static final byte CMD_RESET = 7;
        public static final byte CMD_SHUTDOWN = 8;

        public byte cmd = CMD_NULL;

        
Return whether the command code is a delta data update.
/**
         * Return whether the command code is a delta data update.
         */
        public boolean isDeltaData() {
            return cmd == CMD_UPDATE;
        }

        public byte batteryLevel;
        public byte batteryStatus;
        public byte batteryHealth;
        public byte batteryPlugType;

        public short batteryTemperature;
        public char batteryVoltage;

        // The charge of the battery in micro-Ampere-hours.
        public int batteryChargeUAh;

        // Constants from SCREEN_BRIGHTNESS_*
        public static final int STATE_BRIGHTNESS_SHIFT = 0;
        public static final int STATE_BRIGHTNESS_MASK = 0x7;
        // Constants from SIGNAL_STRENGTH_*
        public static final int STATE_PHONE_SIGNAL_STRENGTH_SHIFT = 3;
        public static final int STATE_PHONE_SIGNAL_STRENGTH_MASK = 0x7 << STATE_PHONE_SIGNAL_STRENGTH_SHIFT;
        // Constants from ServiceState.STATE_*
        public static final int STATE_PHONE_STATE_SHIFT = 6;
        public static final int STATE_PHONE_STATE_MASK = 0x7 << STATE_PHONE_STATE_SHIFT;
        // Constants from DATA_CONNECTION_*
        public static final int STATE_DATA_CONNECTION_SHIFT = 9;
        public static final int STATE_DATA_CONNECTION_MASK = 0x1f << STATE_DATA_CONNECTION_SHIFT;

        // These states always appear directly in the first int token
        // of a delta change; they should be ones that change relatively
        // frequently.
        public static final int STATE_CPU_RUNNING_FLAG = 1<<31;
        public static final int STATE_WAKE_LOCK_FLAG = 1<<30;
        public static final int STATE_GPS_ON_FLAG = 1<<29;
        public static final int STATE_WIFI_FULL_LOCK_FLAG = 1<<28;
        public static final int STATE_WIFI_SCAN_FLAG = 1<<27;
        public static final int STATE_WIFI_RADIO_ACTIVE_FLAG = 1<<26;
        public static final int STATE_MOBILE_RADIO_ACTIVE_FLAG = 1<<25;
        // Do not use, this is used for coulomb delta count.
        private static final int STATE_RESERVED_0 = 1<<24;
        // These are on the lower bits used for the command; if they change
        // we need to write another int of data.
        public static final int STATE_SENSOR_ON_FLAG = 1<<23;
        public static final int STATE_AUDIO_ON_FLAG = 1<<22;
        public static final int STATE_PHONE_SCANNING_FLAG = 1<<21;
        public static final int STATE_SCREEN_ON_FLAG = 1<<20;       // consider moving to states2
        public static final int STATE_BATTERY_PLUGGED_FLAG = 1<<19; // consider moving to states2
        public static final int STATE_SCREEN_DOZE_FLAG = 1 << 18;
        // empty slot
        public static final int STATE_WIFI_MULTICAST_ON_FLAG = 1<<16;

        public static final int MOST_INTERESTING_STATES =
                STATE_BATTERY_PLUGGED_FLAG | STATE_SCREEN_ON_FLAG | STATE_SCREEN_DOZE_FLAG;

        public static final int SETTLE_TO_ZERO_STATES = 0xffff0000 & ~MOST_INTERESTING_STATES;

        public int states;

        // Constants from WIFI_SUPPL_STATE_*
        public static final int STATE2_WIFI_SUPPL_STATE_SHIFT = 0;
        public static final int STATE2_WIFI_SUPPL_STATE_MASK = 0xf;
        // Values for NUM_WIFI_SIGNAL_STRENGTH_BINS
        public static final int STATE2_WIFI_SIGNAL_STRENGTH_SHIFT = 4;
        public static final int STATE2_WIFI_SIGNAL_STRENGTH_MASK =
                0x7 << STATE2_WIFI_SIGNAL_STRENGTH_SHIFT;
        // Values for NUM_GPS_SIGNAL_QUALITY_LEVELS
        public static final int STATE2_GPS_SIGNAL_QUALITY_SHIFT = 7;
        public static final int STATE2_GPS_SIGNAL_QUALITY_MASK =
            0x1 << STATE2_GPS_SIGNAL_QUALITY_SHIFT;

        public static final int STATE2_POWER_SAVE_FLAG = 1<<31;
        public static final int STATE2_VIDEO_ON_FLAG = 1<<30;
        public static final int STATE2_WIFI_RUNNING_FLAG = 1<<29;
        public static final int STATE2_WIFI_ON_FLAG = 1<<28;
        public static final int STATE2_FLASHLIGHT_FLAG = 1<<27;
        public static final int STATE2_DEVICE_IDLE_SHIFT = 25;
        public static final int STATE2_DEVICE_IDLE_MASK = 0x3 << STATE2_DEVICE_IDLE_SHIFT;
        public static final int STATE2_CHARGING_FLAG = 1<<24;
        public static final int STATE2_PHONE_IN_CALL_FLAG = 1<<23;
        public static final int STATE2_BLUETOOTH_ON_FLAG = 1<<22;
        public static final int STATE2_CAMERA_FLAG = 1<<21;
        public static final int STATE2_BLUETOOTH_SCAN_FLAG = 1 << 20;
        public static final int STATE2_CELLULAR_HIGH_TX_POWER_FLAG = 1 << 19;
        public static final int STATE2_USB_DATA_LINK_FLAG = 1 << 18;

        public static final int MOST_INTERESTING_STATES2 =
                STATE2_POWER_SAVE_FLAG | STATE2_WIFI_ON_FLAG | STATE2_DEVICE_IDLE_MASK
                | STATE2_CHARGING_FLAG | STATE2_PHONE_IN_CALL_FLAG | STATE2_BLUETOOTH_ON_FLAG;

        public static final int SETTLE_TO_ZERO_STATES2 = 0xffff0000 & ~MOST_INTERESTING_STATES2;

        public int states2;

        // The wake lock that was acquired at this point.
        public HistoryTag wakelockTag;

        // Kernel wakeup reason at this point.
        public HistoryTag wakeReasonTag;

        // Non-null when there is more detailed information at this step.
        public HistoryStepDetails stepDetails;

        public static final int EVENT_FLAG_START = 0x8000;
        public static final int EVENT_FLAG_FINISH = 0x4000;

        // No event in this item.
        public static final int EVENT_NONE = 0x0000;
        // Event is about a process that is running.
        public static final int EVENT_PROC = 0x0001;
        // Event is about an application package that is in the foreground.
        public static final int EVENT_FOREGROUND = 0x0002;
        // Event is about an application package that is at the top of the screen.
        public static final int EVENT_TOP = 0x0003;
        // Event is about active sync operations.
        public static final int EVENT_SYNC = 0x0004;
        // Events for all additional wake locks aquired/release within a wake block.
        // These are not generated by default.
        public static final int EVENT_WAKE_LOCK = 0x0005;
        // Event is about an application executing a scheduled job.
        public static final int EVENT_JOB = 0x0006;
        // Events for users running.
        public static final int EVENT_USER_RUNNING = 0x0007;
        // Events for foreground user.
        public static final int EVENT_USER_FOREGROUND = 0x0008;
        // Event for connectivity changed.
        public static final int EVENT_CONNECTIVITY_CHANGED = 0x0009;
        // Event for becoming active taking us out of idle mode.
        public static final int EVENT_ACTIVE = 0x000a;
        // Event for a package being installed.
        public static final int EVENT_PACKAGE_INSTALLED = 0x000b;
        // Event for a package being uninstalled.
        public static final int EVENT_PACKAGE_UNINSTALLED = 0x000c;
        // Event for a package being uninstalled.
        public static final int EVENT_ALARM = 0x000d;
        // Record that we have decided we need to collect new stats data.
        public static final int EVENT_COLLECT_EXTERNAL_STATS = 0x000e;
        // Event for a package becoming inactive due to being unused for a period of time.
        public static final int EVENT_PACKAGE_INACTIVE = 0x000f;
        // Event for a package becoming active due to an interaction.
        public static final int EVENT_PACKAGE_ACTIVE = 0x0010;
        // Event for a package being on the temporary whitelist.
        public static final int EVENT_TEMP_WHITELIST = 0x0011;
        // Event for the screen waking up.
        public static final int EVENT_SCREEN_WAKE_UP = 0x0012;
        // Event for the UID that woke up the application processor.
        // Used for wakeups coming from WiFi, modem, etc.
        public static final int EVENT_WAKEUP_AP = 0x0013;
        // Event for reporting that a specific partial wake lock has been held for a long duration.
        public static final int EVENT_LONG_WAKE_LOCK = 0x0014;

        // Number of event types.
        public static final int EVENT_COUNT = 0x0016;
        // Mask to extract out only the type part of the event.
        public static final int EVENT_TYPE_MASK = ~(EVENT_FLAG_START|EVENT_FLAG_FINISH);

        public static final int EVENT_PROC_START = EVENT_PROC | EVENT_FLAG_START;
        public static final int EVENT_PROC_FINISH = EVENT_PROC | EVENT_FLAG_FINISH;
        public static final int EVENT_FOREGROUND_START = EVENT_FOREGROUND | EVENT_FLAG_START;
        public static final int EVENT_FOREGROUND_FINISH = EVENT_FOREGROUND | EVENT_FLAG_FINISH;
        public static final int EVENT_TOP_START = EVENT_TOP | EVENT_FLAG_START;
        public static final int EVENT_TOP_FINISH = EVENT_TOP | EVENT_FLAG_FINISH;
        public static final int EVENT_SYNC_START = EVENT_SYNC | EVENT_FLAG_START;
        public static final int EVENT_SYNC_FINISH = EVENT_SYNC | EVENT_FLAG_FINISH;
        public static final int EVENT_WAKE_LOCK_START = EVENT_WAKE_LOCK | EVENT_FLAG_START;
        public static final int EVENT_WAKE_LOCK_FINISH = EVENT_WAKE_LOCK | EVENT_FLAG_FINISH;
        public static final int EVENT_JOB_START = EVENT_JOB | EVENT_FLAG_START;
        public static final int EVENT_JOB_FINISH = EVENT_JOB | EVENT_FLAG_FINISH;
        public static final int EVENT_USER_RUNNING_START = EVENT_USER_RUNNING | EVENT_FLAG_START;
        public static final int EVENT_USER_RUNNING_FINISH = EVENT_USER_RUNNING | EVENT_FLAG_FINISH;
        public static final int EVENT_USER_FOREGROUND_START =
                EVENT_USER_FOREGROUND | EVENT_FLAG_START;
        public static final int EVENT_USER_FOREGROUND_FINISH =
                EVENT_USER_FOREGROUND | EVENT_FLAG_FINISH;
        public static final int EVENT_ALARM_START = EVENT_ALARM | EVENT_FLAG_START;
        public static final int EVENT_ALARM_FINISH = EVENT_ALARM | EVENT_FLAG_FINISH;
        public static final int EVENT_TEMP_WHITELIST_START =
                EVENT_TEMP_WHITELIST | EVENT_FLAG_START;
        public static final int EVENT_TEMP_WHITELIST_FINISH =
                EVENT_TEMP_WHITELIST | EVENT_FLAG_FINISH;
        public static final int EVENT_LONG_WAKE_LOCK_START =
                EVENT_LONG_WAKE_LOCK | EVENT_FLAG_START;
        public static final int EVENT_LONG_WAKE_LOCK_FINISH =
                EVENT_LONG_WAKE_LOCK | EVENT_FLAG_FINISH;

        // For CMD_EVENT.
        public int eventCode;
        public HistoryTag eventTag;

        // Only set for CMD_CURRENT_TIME or CMD_RESET, as per System.currentTimeMillis().
        public long currentTime;

        // Meta-data when reading.
        public int numReadInts;

        // Pre-allocated objects.
        public final HistoryTag localWakelockTag = new HistoryTag();
        public final HistoryTag localWakeReasonTag = new HistoryTag();
        public final HistoryTag localEventTag = new HistoryTag();

        public HistoryItem() {
        }

        public HistoryItem(long time, Parcel src) {
            this.time = time;
            numReadInts = 2;
            readFromParcel(src);
        }

        public int describeContents() {
            return 0;
        }

        public void writeToParcel(Parcel dest, int flags) {
            dest.writeLong(time);
            int bat = (((int)cmd)&0xff)
                    | ((((int)batteryLevel)<<8)&0xff00)
                    | ((((int)batteryStatus)<<16)&0xf0000)
                    | ((((int)batteryHealth)<<20)&0xf00000)
                    | ((((int)batteryPlugType)<<24)&0xf000000)
                    | (wakelockTag != null ? 0x10000000 : 0)
                    | (wakeReasonTag != null ? 0x20000000 : 0)
                    | (eventCode != EVENT_NONE ? 0x40000000 : 0);
            dest.writeInt(bat);
            bat = (((int)batteryTemperature)&0xffff)
                    | ((((int)batteryVoltage)<<16)&0xffff0000);
            dest.writeInt(bat);
            dest.writeInt(batteryChargeUAh);
            dest.writeInt(states);
            dest.writeInt(states2);
            if (wakelockTag != null) {
                wakelockTag.writeToParcel(dest, flags);
            }
            if (wakeReasonTag != null) {
                wakeReasonTag.writeToParcel(dest, flags);
            }
            if (eventCode != EVENT_NONE) {
                dest.writeInt(eventCode);
                eventTag.writeToParcel(dest, flags);
            }
            if (cmd == CMD_CURRENT_TIME || cmd == CMD_RESET) {
                dest.writeLong(currentTime);
            }
        }

        public void readFromParcel(Parcel src) {
            int start = src.dataPosition();
            int bat = src.readInt();
            cmd = (byte)(bat&0xff);
            batteryLevel = (byte)((bat>>8)&0xff);
            batteryStatus = (byte)((bat>>16)&0xf);
            batteryHealth = (byte)((bat>>20)&0xf);
            batteryPlugType = (byte)((bat>>24)&0xf);
            int bat2 = src.readInt();
            batteryTemperature = (short)(bat2&0xffff);
            batteryVoltage = (char)((bat2>>16)&0xffff);
            batteryChargeUAh = src.readInt();
            states = src.readInt();
            states2 = src.readInt();
            if ((bat&0x10000000) != 0) {
                wakelockTag = localWakelockTag;
                wakelockTag.readFromParcel(src);
            } else {
                wakelockTag = null;
            }
            if ((bat&0x20000000) != 0) {
                wakeReasonTag = localWakeReasonTag;
                wakeReasonTag.readFromParcel(src);
            } else {
                wakeReasonTag = null;
            }
            if ((bat&0x40000000) != 0) {
                eventCode = src.readInt();
                eventTag = localEventTag;
                eventTag.readFromParcel(src);
            } else {
                eventCode = EVENT_NONE;
                eventTag = null;
            }
            if (cmd == CMD_CURRENT_TIME || cmd == CMD_RESET) {
                currentTime = src.readLong();
            } else {
                currentTime = 0;
            }
            numReadInts += (src.dataPosition()-start)/4;
        }

        public void clear() {
            time = 0;
            cmd = CMD_NULL;
            batteryLevel = 0;
            batteryStatus = 0;
            batteryHealth = 0;
            batteryPlugType = 0;
            batteryTemperature = 0;
            batteryVoltage = 0;
            batteryChargeUAh = 0;
            states = 0;
            states2 = 0;
            wakelockTag = null;
            wakeReasonTag = null;
            eventCode = EVENT_NONE;
            eventTag = null;
        }

        public void setTo(HistoryItem o) {
            time = o.time;
            cmd = o.cmd;
            setToCommon(o);
        }

        public void setTo(long time, byte cmd, HistoryItem o) {
            this.time = time;
            this.cmd = cmd;
            setToCommon(o);
        }

        private void setToCommon(HistoryItem o) {
            batteryLevel = o.batteryLevel;
            batteryStatus = o.batteryStatus;
            batteryHealth = o.batteryHealth;
            batteryPlugType = o.batteryPlugType;
            batteryTemperature = o.batteryTemperature;
            batteryVoltage = o.batteryVoltage;
            batteryChargeUAh = o.batteryChargeUAh;
            states = o.states;
            states2 = o.states2;
            if (o.wakelockTag != null) {
                wakelockTag = localWakelockTag;
                wakelockTag.setTo(o.wakelockTag);
            } else {
                wakelockTag = null;
            }
            if (o.wakeReasonTag != null) {
                wakeReasonTag = localWakeReasonTag;
                wakeReasonTag.setTo(o.wakeReasonTag);
            } else {
                wakeReasonTag = null;
            }
            eventCode = o.eventCode;
            if (o.eventTag != null) {
                eventTag = localEventTag;
                eventTag.setTo(o.eventTag);
            } else {
                eventTag = null;
            }
            currentTime = o.currentTime;
        }

        public boolean sameNonEvent(HistoryItem o) {
            return batteryLevel == o.batteryLevel
                    && batteryStatus == o.batteryStatus
                    && batteryHealth == o.batteryHealth
                    && batteryPlugType == o.batteryPlugType
                    && batteryTemperature == o.batteryTemperature
                    && batteryVoltage == o.batteryVoltage
                    && batteryChargeUAh == o.batteryChargeUAh
                    && states == o.states
                    && states2 == o.states2
                    && currentTime == o.currentTime;
        }

        public boolean same(HistoryItem o) {
            if (!sameNonEvent(o) || eventCode != o.eventCode) {
                return false;
            }
            if (wakelockTag != o.wakelockTag) {
                if (wakelockTag == null || o.wakelockTag == null) {
                    return false;
                }
                if (!wakelockTag.equals(o.wakelockTag)) {
                    return false;
                }
            }
            if (wakeReasonTag != o.wakeReasonTag) {
                if (wakeReasonTag == null || o.wakeReasonTag == null) {
                    return false;
                }
                if (!wakeReasonTag.equals(o.wakeReasonTag)) {
                    return false;
                }
            }
            if (eventTag != o.eventTag) {
                if (eventTag == null || o.eventTag == null) {
                    return false;
                }
                if (!eventTag.equals(o.eventTag)) {
                    return false;
                }
            }
            return true;
        }
    }

    public final static class HistoryEventTracker {
        private final HashMap<String, SparseIntArray>[] mActiveEvents
                = (HashMap<String, SparseIntArray>[]) new HashMap[HistoryItem.EVENT_COUNT];

        public boolean updateState(int code, String name, int uid, int poolIdx) {
            if ((code&HistoryItem.EVENT_FLAG_START) != 0) {
                int idx = code&HistoryItem.EVENT_TYPE_MASK;
                HashMap<String, SparseIntArray> active = mActiveEvents[idx];
                if (active == null) {
                    active = new HashMap<>();
                    mActiveEvents[idx] = active;
                }
                SparseIntArray uids = active.get(name);
                if (uids == null) {
                    uids = new SparseIntArray();
                    active.put(name, uids);
                }
                if (uids.indexOfKey(uid) >= 0) {
                    // Already set, nothing to do!
                    return false;
                }
                uids.put(uid, poolIdx);
            } else if ((code&HistoryItem.EVENT_FLAG_FINISH) != 0) {
                int idx = code&HistoryItem.EVENT_TYPE_MASK;
                HashMap<String, SparseIntArray> active = mActiveEvents[idx];
                if (active == null) {
                    // not currently active, nothing to do.
                    return false;
                }
                SparseIntArray uids = active.get(name);
                if (uids == null) {
                    // not currently active, nothing to do.
                    return false;
                }
                idx = uids.indexOfKey(uid);
                if (idx < 0) {
                    // not currently active, nothing to do.
                    return false;
                }
                uids.removeAt(idx);
                if (uids.size() <= 0) {
                    active.remove(name);
                }
            }
            return true;
        }

        public void removeEvents(int code) {
            int idx = code&HistoryItem.EVENT_TYPE_MASK;
            mActiveEvents[idx] = null;
        }

        public HashMap<String, SparseIntArray> getStateForEvent(int code) {
            return mActiveEvents[code];
        }
    }

    public static final class BitDescription {
        public final int mask;
        public final int shift;
        public final String name;
        public final String shortName;
        public final String[] values;
        public final String[] shortValues;

        public BitDescription(int mask, String name, String shortName) {
            this.mask = mask;
            this.shift = -1;
            this.name = name;
            this.shortName = shortName;
            this.values = null;
            this.shortValues = null;
        }

        public BitDescription(int mask, int shift, String name, String shortName,
                String[] values, String[] shortValues) {
            this.mask = mask;
            this.shift = shift;
            this.name = name;
            this.shortName = shortName;
            this.values = values;
            this.shortValues = shortValues;
        }
    }

    
Don't allow any more batching in to the current history event.  This
is called when printing partial histories, so to ensure that the next
history event will go in to a new batch after what was printed in the
last partial history.
/**
     * Don't allow any more batching in to the current history event.  This
     * is called when printing partial histories, so to ensure that the next
     * history event will go in to a new batch after what was printed in the
     * last partial history.
     */
    public abstract void commitCurrentHistoryBatchLocked();

    public abstract int getHistoryTotalSize();

    public abstract int getHistoryUsedSize();

    public abstract boolean startIteratingHistoryLocked();

    public abstract int getHistoryStringPoolSize();

    public abstract int getHistoryStringPoolBytes();

    public abstract String getHistoryTagPoolString(int index);

    public abstract int getHistoryTagPoolUid(int index);

    public abstract boolean getNextHistoryLocked(HistoryItem out);

    public abstract void finishIteratingHistoryLocked();

    public abstract boolean startIteratingOldHistoryLocked();

    public abstract boolean getNextOldHistoryLocked(HistoryItem out);

    public abstract void finishIteratingOldHistoryLocked();

    
Return the base time offset for the battery history.
/**
     * Return the base time offset for the battery history.
     */
    public abstract long getHistoryBaseTime();

    
Returns the number of times the device has been started.
/**
     * Returns the number of times the device has been started.
     */
    public abstract int getStartCount();

    
Returns the time in microseconds that the screen has been on while the device was
running on battery.
{@hide}
/**
     * Returns the time in microseconds that the screen has been on while the device was
     * running on battery.
     *
     * {@hide}
     */
    public abstract long getScreenOnTime(long elapsedRealtimeUs, int which);

    
Returns the number of times the screen was turned on.
{@hide}
/**
     * Returns the number of times the screen was turned on.
     *
     * {@hide}
     */
    public abstract int getScreenOnCount(int which);

    
Returns the time in microseconds that the screen has been dozing while the device was
running on battery.
{@hide}
/**
     * Returns the time in microseconds that the screen has been dozing while the device was
     * running on battery.
     *
     * {@hide}
     */
    public abstract long getScreenDozeTime(long elapsedRealtimeUs, int which);

    
Returns the number of times the screen was turned dozing.
{@hide}
/**
     * Returns the number of times the screen was turned dozing.
     *
     * {@hide}
     */
    public abstract int getScreenDozeCount(int which);

    public abstract long getInteractiveTime(long elapsedRealtimeUs, int which);

    public static final int SCREEN_BRIGHTNESS_DARK = 0;
    public static final int SCREEN_BRIGHTNESS_DIM = 1;
    public static final int SCREEN_BRIGHTNESS_MEDIUM = 2;
    public static final int SCREEN_BRIGHTNESS_LIGHT = 3;
    public static final int SCREEN_BRIGHTNESS_BRIGHT = 4;

    static final String[] SCREEN_BRIGHTNESS_NAMES = {
        "dark", "dim", "medium", "light", "bright"
    };

    static final String[] SCREEN_BRIGHTNESS_SHORT_NAMES = {
        "0", "1", "2", "3", "4"
    };

    public static final int NUM_SCREEN_BRIGHTNESS_BINS = 5;

    
Returns the time in microseconds that the screen has been on with
the given brightness
{@hide}
/**
     * Returns the time in microseconds that the screen has been on with
     * the given brightness
     *
     * {@hide}
     */
    public abstract long getScreenBrightnessTime(int brightnessBin,
            long elapsedRealtimeUs, int which);

    
Returns the Timer object that tracks the given screen brightness. {@hide} /**
     * Returns the {@link Timer} object that tracks the given screen brightness.
     *
     * {@hide}
     */
    public abstract Timer getScreenBrightnessTimer(int brightnessBin);

    
Returns the time in microseconds that power save mode has been enabled while the device was
running on battery.
{@hide}
/**
     * Returns the time in microseconds that power save mode has been enabled while the device was
     * running on battery.
     *
     * {@hide}
     */
    public abstract long getPowerSaveModeEnabledTime(long elapsedRealtimeUs, int which);

    
Returns the number of times that power save mode was enabled.
{@hide}
/**
     * Returns the number of times that power save mode was enabled.
     *
     * {@hide}
     */
    public abstract int getPowerSaveModeEnabledCount(int which);

    
Constant for device idle mode: not active.
/**
     * Constant for device idle mode: not active.
     */
    public static final int DEVICE_IDLE_MODE_OFF = ServerProtoEnums.DEVICE_IDLE_MODE_OFF; // 0

    
Constant for device idle mode: active in lightweight mode.
/**
     * Constant for device idle mode: active in lightweight mode.
     */
    public static final int DEVICE_IDLE_MODE_LIGHT = ServerProtoEnums.DEVICE_IDLE_MODE_LIGHT; // 1

    
Constant for device idle mode: active in full mode.
/**
     * Constant for device idle mode: active in full mode.
     */
    public static final int DEVICE_IDLE_MODE_DEEP = ServerProtoEnums.DEVICE_IDLE_MODE_DEEP; // 2

    
Returns the time in microseconds that device has been in idle mode while
running on battery.
{@hide}
/**
     * Returns the time in microseconds that device has been in idle mode while
     * running on battery.
     *
     * {@hide}
     */
    public abstract long getDeviceIdleModeTime(int mode, long elapsedRealtimeUs, int which);

    
Returns the number of times that the devie has gone in to idle mode.
{@hide}
/**
     * Returns the number of times that the devie has gone in to idle mode.
     *
     * {@hide}
     */
    public abstract int getDeviceIdleModeCount(int mode, int which);

    
Return the longest duration we spent in a particular device idle mode (fully in the
mode, not in idle maintenance etc).
/**
     * Return the longest duration we spent in a particular device idle mode (fully in the
     * mode, not in idle maintenance etc).
     */
    public abstract long getLongestDeviceIdleModeTime(int mode);

    
Returns the time in microseconds that device has been in idling while on battery. This is broader than getDeviceIdleModeTime -- it counts all of the time that we consider the device to be idle, whether or not it is currently in the actual device idle mode. {@hide} /**
     * Returns the time in microseconds that device has been in idling while on
     * battery.  This is broader than {@link #getDeviceIdleModeTime} -- it
     * counts all of the time that we consider the device to be idle, whether or not
     * it is currently in the actual device idle mode.
     *
     * {@hide}
     */
    public abstract long getDeviceIdlingTime(int mode, long elapsedRealtimeUs, int which);

    
Returns the number of times that the device has started idling.
{@hide}
/**
     * Returns the number of times that the device has started idling.
     *
     * {@hide}
     */
    public abstract int getDeviceIdlingCount(int mode, int which);

    
Returns the number of times that connectivity state changed.
{@hide}
/**
     * Returns the number of times that connectivity state changed.
     *
     * {@hide}
     */
    public abstract int getNumConnectivityChange(int which);


    
Returns the time in microseconds that the phone has been running with
the given GPS signal quality level
{@hide}
/**
     * Returns the time in microseconds that the phone has been running with
     * the given GPS signal quality level
     *
     * {@hide}
     */
    public abstract long getGpsSignalQualityTime(int strengthBin,
        long elapsedRealtimeUs, int which);

    
Returns the GPS battery drain in mA-ms
{@hide}
/**
     * Returns the GPS battery drain in mA-ms
     *
     * {@hide}
     */
    public abstract long getGpsBatteryDrainMaMs();

    
Returns the time in microseconds that the phone has been on while the device was
running on battery.
{@hide}
/**
     * Returns the time in microseconds that the phone has been on while the device was
     * running on battery.
     *
     * {@hide}
     */
    public abstract long getPhoneOnTime(long elapsedRealtimeUs, int which);

    
Returns the number of times a phone call was activated.
{@hide}
/**
     * Returns the number of times a phone call was activated.
     *
     * {@hide}
     */
    public abstract int getPhoneOnCount(int which);

    
Returns the time in microseconds that the phone has been running with
the given signal strength.
{@hide}
/**
     * Returns the time in microseconds that the phone has been running with
     * the given signal strength.
     *
     * {@hide}
     */
    public abstract long getPhoneSignalStrengthTime(int strengthBin,
            long elapsedRealtimeUs, int which);

    
Returns the time in microseconds that the phone has been trying to
acquire a signal.
{@hide}
/**
     * Returns the time in microseconds that the phone has been trying to
     * acquire a signal.
     *
     * {@hide}
     */
    public abstract long getPhoneSignalScanningTime(
            long elapsedRealtimeUs, int which);

    
Returns the Timer object that tracks how much the phone has been trying to acquire a signal. {@hide} /**
     * Returns the {@link Timer} object that tracks how much the phone has been trying to
     * acquire a signal.
     *
     * {@hide}
     */
    public abstract Timer getPhoneSignalScanningTimer();

    
Returns the number of times the phone has entered the given signal strength.
{@hide}
/**
     * Returns the number of times the phone has entered the given signal strength.
     *
     * {@hide}
     */
    public abstract int getPhoneSignalStrengthCount(int strengthBin, int which);

    
Return the Timer object used to track the given signal strength's duration and counts. /**
     * Return the {@link Timer} object used to track the given signal strength's duration and
     * counts.
     */
    protected abstract Timer getPhoneSignalStrengthTimer(int strengthBin);

    
Returns the time in microseconds that the mobile network has been active
(in a high power state).
{@hide}
/**
     * Returns the time in microseconds that the mobile network has been active
     * (in a high power state).
     *
     * {@hide}
     */
    public abstract long getMobileRadioActiveTime(long elapsedRealtimeUs, int which);

    
Returns the number of times that the mobile network has transitioned to the
active state.
{@hide}
/**
     * Returns the number of times that the mobile network has transitioned to the
     * active state.
     *
     * {@hide}
     */
    public abstract int getMobileRadioActiveCount(int which);

    
Returns the time in microseconds that is the difference between the mobile radio
time we saw based on the elapsed timestamp when going down vs. the given time stamp
from the radio.
{@hide}
/**
     * Returns the time in microseconds that is the difference between the mobile radio
     * time we saw based on the elapsed timestamp when going down vs. the given time stamp
     * from the radio.
     *
     * {@hide}
     */
    public abstract long getMobileRadioActiveAdjustedTime(int which);

    
Returns the time in microseconds that the mobile network has been active
(in a high power state) but not being able to blame on an app.
{@hide}
/**
     * Returns the time in microseconds that the mobile network has been active
     * (in a high power state) but not being able to blame on an app.
     *
     * {@hide}
     */
    public abstract long getMobileRadioActiveUnknownTime(int which);

    
Return count of number of times radio was up that could not be blamed on apps.
{@hide}
/**
     * Return count of number of times radio was up that could not be blamed on apps.
     *
     * {@hide}
     */
    public abstract int getMobileRadioActiveUnknownCount(int which);

    public static final int DATA_CONNECTION_NONE = 0;
    public static final int DATA_CONNECTION_OTHER = TelephonyManager.MAX_NETWORK_TYPE + 1;

    static final String[] DATA_CONNECTION_NAMES = {
        "none", "gprs", "edge", "umts", "cdma", "evdo_0", "evdo_A",
        "1xrtt", "hsdpa", "hsupa", "hspa", "iden", "evdo_b", "lte",
        "ehrpd", "hspap", "gsm", "td_scdma", "iwlan", "lte_ca", "other"
    };

    public static final int NUM_DATA_CONNECTION_TYPES = DATA_CONNECTION_OTHER+1;

    
Returns the time in microseconds that the phone has been running with
the given data connection.
{@hide}
/**
     * Returns the time in microseconds that the phone has been running with
     * the given data connection.
     *
     * {@hide}
     */
    public abstract long getPhoneDataConnectionTime(int dataType,
            long elapsedRealtimeUs, int which);

    
Returns the number of times the phone has entered the given data
connection type.
{@hide}
/**
     * Returns the number of times the phone has entered the given data
     * connection type.
     *
     * {@hide}
     */
    public abstract int getPhoneDataConnectionCount(int dataType, int which);

    
Returns the Timer object that tracks the phone's data connection type stats. /**
     * Returns the {@link Timer} object that tracks the phone's data connection type stats.
     */
    public abstract Timer getPhoneDataConnectionTimer(int dataType);

    public static final int WIFI_SUPPL_STATE_INVALID = 0;
    public static final int WIFI_SUPPL_STATE_DISCONNECTED = 1;
    public static final int WIFI_SUPPL_STATE_INTERFACE_DISABLED = 2;
    public static final int WIFI_SUPPL_STATE_INACTIVE = 3;
    public static final int WIFI_SUPPL_STATE_SCANNING = 4;
    public static final int WIFI_SUPPL_STATE_AUTHENTICATING = 5;
    public static final int WIFI_SUPPL_STATE_ASSOCIATING = 6;
    public static final int WIFI_SUPPL_STATE_ASSOCIATED = 7;
    public static final int WIFI_SUPPL_STATE_FOUR_WAY_HANDSHAKE = 8;
    public static final int WIFI_SUPPL_STATE_GROUP_HANDSHAKE = 9;
    public static final int WIFI_SUPPL_STATE_COMPLETED = 10;
    public static final int WIFI_SUPPL_STATE_DORMANT = 11;
    public static final int WIFI_SUPPL_STATE_UNINITIALIZED = 12;

    public static final int NUM_WIFI_SUPPL_STATES = WIFI_SUPPL_STATE_UNINITIALIZED+1;

    static final String[] WIFI_SUPPL_STATE_NAMES = {
        "invalid", "disconn", "disabled", "inactive", "scanning",
        "authenticating", "associating", "associated", "4-way-handshake",
        "group-handshake", "completed", "dormant", "uninit"
    };

    static final String[] WIFI_SUPPL_STATE_SHORT_NAMES = {
        "inv", "dsc", "dis", "inact", "scan",
        "auth", "ascing", "asced", "4-way",
        "group", "compl", "dorm", "uninit"
    };

    public static final BitDescription[] HISTORY_STATE_DESCRIPTIONS = new BitDescription[] {
        new BitDescription(HistoryItem.STATE_CPU_RUNNING_FLAG, "running", "r"),
        new BitDescription(HistoryItem.STATE_WAKE_LOCK_FLAG, "wake_lock", "w"),
        new BitDescription(HistoryItem.STATE_SENSOR_ON_FLAG, "sensor", "s"),
        new BitDescription(HistoryItem.STATE_GPS_ON_FLAG, "gps", "g"),
        new BitDescription(HistoryItem.STATE_WIFI_FULL_LOCK_FLAG, "wifi_full_lock", "Wl"),
        new BitDescription(HistoryItem.STATE_WIFI_SCAN_FLAG, "wifi_scan", "Ws"),
        new BitDescription(HistoryItem.STATE_WIFI_MULTICAST_ON_FLAG, "wifi_multicast", "Wm"),
        new BitDescription(HistoryItem.STATE_WIFI_RADIO_ACTIVE_FLAG, "wifi_radio", "Wr"),
        new BitDescription(HistoryItem.STATE_MOBILE_RADIO_ACTIVE_FLAG, "mobile_radio", "Pr"),
        new BitDescription(HistoryItem.STATE_PHONE_SCANNING_FLAG, "phone_scanning", "Psc"),
        new BitDescription(HistoryItem.STATE_AUDIO_ON_FLAG, "audio", "a"),
        new BitDescription(HistoryItem.STATE_SCREEN_ON_FLAG, "screen", "S"),
        new BitDescription(HistoryItem.STATE_BATTERY_PLUGGED_FLAG, "plugged", "BP"),
        new BitDescription(HistoryItem.STATE_SCREEN_DOZE_FLAG, "screen_doze", "Sd"),
        new BitDescription(HistoryItem.STATE_DATA_CONNECTION_MASK,
                HistoryItem.STATE_DATA_CONNECTION_SHIFT, "data_conn", "Pcn",
                DATA_CONNECTION_NAMES, DATA_CONNECTION_NAMES),
        new BitDescription(HistoryItem.STATE_PHONE_STATE_MASK,
                HistoryItem.STATE_PHONE_STATE_SHIFT, "phone_state", "Pst",
                new String[] {"in", "out", "emergency", "off"},
                new String[] {"in", "out", "em", "off"}),
        new BitDescription(HistoryItem.STATE_PHONE_SIGNAL_STRENGTH_MASK,
                HistoryItem.STATE_PHONE_SIGNAL_STRENGTH_SHIFT, "phone_signal_strength", "Pss",
                SignalStrength.SIGNAL_STRENGTH_NAMES,
                new String[] { "0", "1", "2", "3", "4" }),
        new BitDescription(HistoryItem.STATE_BRIGHTNESS_MASK,
                HistoryItem.STATE_BRIGHTNESS_SHIFT, "brightness", "Sb",
                SCREEN_BRIGHTNESS_NAMES, SCREEN_BRIGHTNESS_SHORT_NAMES),
    };

    public static final BitDescription[] HISTORY_STATE2_DESCRIPTIONS = new BitDescription[] {
        new BitDescription(HistoryItem.STATE2_POWER_SAVE_FLAG, "power_save", "ps"),
        new BitDescription(HistoryItem.STATE2_VIDEO_ON_FLAG, "video", "v"),
        new BitDescription(HistoryItem.STATE2_WIFI_RUNNING_FLAG, "wifi_running", "Ww"),
        new BitDescription(HistoryItem.STATE2_WIFI_ON_FLAG, "wifi", "W"),
        new BitDescription(HistoryItem.STATE2_FLASHLIGHT_FLAG, "flashlight", "fl"),
        new BitDescription(HistoryItem.STATE2_DEVICE_IDLE_MASK,
                HistoryItem.STATE2_DEVICE_IDLE_SHIFT, "device_idle", "di",
                new String[] { "off", "light", "full", "???" },
                new String[] { "off", "light", "full", "???" }),
        new BitDescription(HistoryItem.STATE2_CHARGING_FLAG, "charging", "ch"),
        new BitDescription(HistoryItem.STATE2_USB_DATA_LINK_FLAG, "usb_data", "Ud"),
        new BitDescription(HistoryItem.STATE2_PHONE_IN_CALL_FLAG, "phone_in_call", "Pcl"),
        new BitDescription(HistoryItem.STATE2_BLUETOOTH_ON_FLAG, "bluetooth", "b"),
        new BitDescription(HistoryItem.STATE2_WIFI_SIGNAL_STRENGTH_MASK,
                HistoryItem.STATE2_WIFI_SIGNAL_STRENGTH_SHIFT, "wifi_signal_strength", "Wss",
                new String[] { "0", "1", "2", "3", "4" },
                new String[] { "0", "1", "2", "3", "4" }),
        new BitDescription(HistoryItem.STATE2_WIFI_SUPPL_STATE_MASK,
                HistoryItem.STATE2_WIFI_SUPPL_STATE_SHIFT, "wifi_suppl", "Wsp",
                WIFI_SUPPL_STATE_NAMES, WIFI_SUPPL_STATE_SHORT_NAMES),
        new BitDescription(HistoryItem.STATE2_CAMERA_FLAG, "camera", "ca"),
        new BitDescription(HistoryItem.STATE2_BLUETOOTH_SCAN_FLAG, "ble_scan", "bles"),
        new BitDescription(HistoryItem.STATE2_CELLULAR_HIGH_TX_POWER_FLAG,
                "cellular_high_tx_power", "Chtp"),
        new BitDescription(HistoryItem.STATE2_GPS_SIGNAL_QUALITY_MASK,
            HistoryItem.STATE2_GPS_SIGNAL_QUALITY_SHIFT, "gps_signal_quality", "Gss",
            new String[] { "poor", "good"}, new String[] { "poor", "good"})
    };

    public static final String[] HISTORY_EVENT_NAMES = new String[] {
            "null", "proc", "fg", "top", "sync", "wake_lock_in", "job", "user", "userfg", "conn",
            "active", "pkginst", "pkgunin", "alarm", "stats", "pkginactive", "pkgactive",
            "tmpwhitelist", "screenwake", "wakeupap", "longwake", "est_capacity"
    };

    public static final String[] HISTORY_EVENT_CHECKIN_NAMES = new String[] {
            "Enl", "Epr", "Efg", "Etp", "Esy", "Ewl", "Ejb", "Eur", "Euf", "Ecn",
            "Eac", "Epi", "Epu", "Eal", "Est", "Eai", "Eaa", "Etw",
            "Esw", "Ewa", "Elw", "Eec"
    };

    @FunctionalInterface
    public interface IntToString {
        String applyAsString(int val);
    }

    private static final IntToString sUidToString = UserHandle::formatUid;
    private static final IntToString sIntToString = Integer::toString;

    public static final IntToString[] HISTORY_EVENT_INT_FORMATTERS = new IntToString[] {
            sUidToString, sUidToString, sUidToString, sUidToString, sUidToString, sUidToString,
            sUidToString, sUidToString, sUidToString, sUidToString, sUidToString, sUidToString,
            sUidToString, sUidToString, sUidToString, sUidToString, sUidToString, sUidToString,
            sUidToString, sUidToString, sUidToString, sIntToString
    };

    
Returns total time for WiFi Multicast Wakelock timer.
Note that this may be different from the sum of per uid timer values.
{@hide}
/**
     * Returns total time for WiFi Multicast Wakelock timer.
     * Note that this may be different from the sum of per uid timer values.
     *
     *  {@hide}
     */
    public abstract long getWifiMulticastWakelockTime(long elapsedRealtimeUs, int which);

    
Returns total time for WiFi Multicast Wakelock timer
Note that this may be different from the sum of per uid timer values.
{@hide}
/**
     * Returns total time for WiFi Multicast Wakelock timer
     * Note that this may be different from the sum of per uid timer values.
     *
     * {@hide}
     */
    public abstract int getWifiMulticastWakelockCount(int which);

    
Returns the time in microseconds that wifi has been on while the device was
running on battery.
{@hide}
/**
     * Returns the time in microseconds that wifi has been on while the device was
     * running on battery.
     *
     * {@hide}
     */
    public abstract long getWifiOnTime(long elapsedRealtimeUs, int which);

    
Returns the time in microseconds that wifi has been active while the device was
running on battery.
{@hide}
/**
     * Returns the time in microseconds that wifi has been active while the device was
     * running on battery.
     *
     * {@hide}
     */
    public abstract long getWifiActiveTime(long elapsedRealtimeUs, int which);

    
Returns the time in microseconds that wifi has been on and the driver has
been in the running state while the device was running on battery.
{@hide}
/**
     * Returns the time in microseconds that wifi has been on and the driver has
     * been in the running state while the device was running on battery.
     *
     * {@hide}
     */
    public abstract long getGlobalWifiRunningTime(long elapsedRealtimeUs, int which);

    public static final int WIFI_STATE_OFF = 0;
    public static final int WIFI_STATE_OFF_SCANNING = 1;
    public static final int WIFI_STATE_ON_NO_NETWORKS = 2;
    public static final int WIFI_STATE_ON_DISCONNECTED = 3;
    public static final int WIFI_STATE_ON_CONNECTED_STA = 4;
    public static final int WIFI_STATE_ON_CONNECTED_P2P = 5;
    public static final int WIFI_STATE_ON_CONNECTED_STA_P2P = 6;
    public static final int WIFI_STATE_SOFT_AP = 7;

    static final String[] WIFI_STATE_NAMES = {
        "off", "scanning", "no_net", "disconn",
        "sta", "p2p", "sta_p2p", "soft_ap"
    };

    public static final int NUM_WIFI_STATES = WIFI_STATE_SOFT_AP+1;

    
Returns the time in microseconds that WiFi has been running in the given state.
{@hide}
/**
     * Returns the time in microseconds that WiFi has been running in the given state.
     *
     * {@hide}
     */
    public abstract long getWifiStateTime(int wifiState,
            long elapsedRealtimeUs, int which);

    
Returns the number of times that WiFi has entered the given state.
{@hide}
/**
     * Returns the number of times that WiFi has entered the given state.
     *
     * {@hide}
     */
    public abstract int getWifiStateCount(int wifiState, int which);

    
Returns the Timer object that tracks the given WiFi state. {@hide} /**
     * Returns the {@link Timer} object that tracks the given WiFi state.
     *
     * {@hide}
     */
    public abstract Timer getWifiStateTimer(int wifiState);

    
Returns the time in microseconds that the wifi supplicant has been
in a given state.
{@hide}
/**
     * Returns the time in microseconds that the wifi supplicant has been
     * in a given state.
     *
     * {@hide}
     */
    public abstract long getWifiSupplStateTime(int state, long elapsedRealtimeUs, int which);

    
Returns the number of times that the wifi supplicant has transitioned
to a given state.
{@hide}
/**
     * Returns the number of times that the wifi supplicant has transitioned
     * to a given state.
     *
     * {@hide}
     */
    public abstract int getWifiSupplStateCount(int state, int which);

    
Returns the Timer object that tracks the given wifi supplicant state. {@hide} /**
     * Returns the {@link Timer} object that tracks the given wifi supplicant state.
     *
     * {@hide}
     */
    public abstract Timer getWifiSupplStateTimer(int state);

    public static final int NUM_WIFI_SIGNAL_STRENGTH_BINS = 5;

    
Returns the time in microseconds that WIFI has been running with
the given signal strength.
{@hide}
/**
     * Returns the time in microseconds that WIFI has been running with
     * the given signal strength.
     *
     * {@hide}
     */
    public abstract long getWifiSignalStrengthTime(int strengthBin,
            long elapsedRealtimeUs, int which);

    
Returns the number of times WIFI has entered the given signal strength.
{@hide}
/**
     * Returns the number of times WIFI has entered the given signal strength.
     *
     * {@hide}
     */
    public abstract int getWifiSignalStrengthCount(int strengthBin, int which);

    
Returns the Timer object that tracks the given WIFI signal strength. {@hide} /**
     * Returns the {@link Timer} object that tracks the given WIFI signal strength.
     *
     * {@hide}
     */
    public abstract Timer getWifiSignalStrengthTimer(int strengthBin);

    
Returns the time in microseconds that the flashlight has been on while the device was
running on battery.
{@hide}
/**
     * Returns the time in microseconds that the flashlight has been on while the device was
     * running on battery.
     *
     * {@hide}
     */
    public abstract long getFlashlightOnTime(long elapsedRealtimeUs, int which);

    
Returns the number of times that the flashlight has been turned on while the device was
running on battery.
{@hide}
/**
     * Returns the number of times that the flashlight has been turned on while the device was
     * running on battery.
     *
     * {@hide}
     */
    public abstract long getFlashlightOnCount(int which);

    
Returns the time in microseconds that the camera has been on while the device was
running on battery.
{@hide}
/**
     * Returns the time in microseconds that the camera has been on while the device was
     * running on battery.
     *
     * {@hide}
     */
    public abstract long getCameraOnTime(long elapsedRealtimeUs, int which);

    
Returns the time in microseconds that bluetooth scans were running while the device was
on battery.
{@hide}
/**
     * Returns the time in microseconds that bluetooth scans were running while the device was
     * on battery.
     *
     * {@hide}
     */
    public abstract long getBluetoothScanTime(long elapsedRealtimeUs, int which);

    public static final int NETWORK_MOBILE_RX_DATA = 0;
    public static final int NETWORK_MOBILE_TX_DATA = 1;
    public static final int NETWORK_WIFI_RX_DATA = 2;
    public static final int NETWORK_WIFI_TX_DATA = 3;
    public static final int NETWORK_BT_RX_DATA = 4;
    public static final int NETWORK_BT_TX_DATA = 5;
    public static final int NETWORK_MOBILE_BG_RX_DATA = 6;
    public static final int NETWORK_MOBILE_BG_TX_DATA = 7;
    public static final int NETWORK_WIFI_BG_RX_DATA = 8;
    public static final int NETWORK_WIFI_BG_TX_DATA = 9;
    public static final int NUM_NETWORK_ACTIVITY_TYPES = NETWORK_WIFI_BG_TX_DATA + 1;

    public abstract long getNetworkActivityBytes(int type, int which);
    public abstract long getNetworkActivityPackets(int type, int which);

    
Returns true if the BatteryStats object has detailed WiFi power reports. When true, calling getWifiControllerActivity() will yield the actual power data. /**
     * Returns true if the BatteryStats object has detailed WiFi power reports.
     * When true, calling {@link #getWifiControllerActivity()} will yield the
     * actual power data.
     */
    public abstract boolean hasWifiActivityReporting();

    
Returns a ControllerActivityCounter which is an aggregate of the times spent in various radio controller states, such as transmit, receive, and idle. 
Returns:
non-null ControllerActivityCounter/**
     * Returns a {@link ControllerActivityCounter} which is an aggregate of the times spent
     * in various radio controller states, such as transmit, receive, and idle.
     * @return non-null {@link ControllerActivityCounter}
     */
    public abstract ControllerActivityCounter getWifiControllerActivity();

    
Returns true if the BatteryStats object has detailed bluetooth power reports. When true, calling getBluetoothControllerActivity() will yield the actual power data. /**
     * Returns true if the BatteryStats object has detailed bluetooth power reports.
     * When true, calling {@link #getBluetoothControllerActivity()} will yield the
     * actual power data.
     */
    public abstract boolean hasBluetoothActivityReporting();

    
Returns a ControllerActivityCounter which is an aggregate of the times spent in various radio controller states, such as transmit, receive, and idle. 
Returns:
non-null ControllerActivityCounter/**
     * Returns a {@link ControllerActivityCounter} which is an aggregate of the times spent
     * in various radio controller states, such as transmit, receive, and idle.
     * @return non-null {@link ControllerActivityCounter}
     */
    public abstract ControllerActivityCounter getBluetoothControllerActivity();

    
Returns true if the BatteryStats object has detailed modem power reports. When true, calling getModemControllerActivity() will yield the actual power data. /**
     * Returns true if the BatteryStats object has detailed modem power reports.
     * When true, calling {@link #getModemControllerActivity()} will yield the
     * actual power data.
     */
    public abstract boolean hasModemActivityReporting();

    
Returns a ControllerActivityCounter which is an aggregate of the times spent in various radio controller states, such as transmit, receive, and idle. 
Returns:
non-null ControllerActivityCounter/**
     * Returns a {@link ControllerActivityCounter} which is an aggregate of the times spent
     * in various radio controller states, such as transmit, receive, and idle.
     * @return non-null {@link ControllerActivityCounter}
     */
    public abstract ControllerActivityCounter getModemControllerActivity();

    
Return the wall clock time when battery stats data collection started.
/**
     * Return the wall clock time when battery stats data collection started.
     */
    public abstract long getStartClockTime();

    
Return platform version tag that we were running in when the battery stats started.
/**
     * Return platform version tag that we were running in when the battery stats started.
     */
    public abstract String getStartPlatformVersion();

    
Return platform version tag that we were running in when the battery stats ended.
/**
     * Return platform version tag that we were running in when the battery stats ended.
     */
    public abstract String getEndPlatformVersion();

    
Return the internal version code of the parcelled format.
/**
     * Return the internal version code of the parcelled format.
     */
    public abstract int getParcelVersion();

    
Return whether we are currently running on battery.
/**
     * Return whether we are currently running on battery.
     */
    public abstract boolean getIsOnBattery();

    
Returns a SparseArray containing the statistics for each uid.
/**
     * Returns a SparseArray containing the statistics for each uid.
     */
    public abstract SparseArray<? extends Uid> getUidStats();

    
Returns the current battery uptime in microseconds.
Params:
curTime – the amount of elapsed realtime in microseconds./**
     * Returns the current battery uptime in microseconds.
     *
     * @param curTime the amount of elapsed realtime in microseconds.
     */
    public abstract long getBatteryUptime(long curTime);

    
Returns the current battery realtime in microseconds.
Params:
curTime – the amount of elapsed realtime in microseconds./**
     * Returns the current battery realtime in microseconds.
     *
     * @param curTime the amount of elapsed realtime in microseconds.
     */
    public abstract long getBatteryRealtime(long curTime);

    
Returns the battery percentage level at the last time the device was unplugged from power, or
the last time it booted on battery power.
/**
     * Returns the battery percentage level at the last time the device was unplugged from power, or
     * the last time it booted on battery power.
     */
    public abstract int getDischargeStartLevel();

    
Returns the current battery percentage level if we are in a discharge cycle, otherwise
returns the level at the last plug event.
/**
     * Returns the current battery percentage level if we are in a discharge cycle, otherwise
     * returns the level at the last plug event.
     */
    public abstract int getDischargeCurrentLevel();

    
Get the amount the battery has discharged since the stats were
last reset after charging, as a lower-end approximation.
/**
     * Get the amount the battery has discharged since the stats were
     * last reset after charging, as a lower-end approximation.
     */
    public abstract int getLowDischargeAmountSinceCharge();

    
Get the amount the battery has discharged since the stats were
last reset after charging, as an upper-end approximation.
/**
     * Get the amount the battery has discharged since the stats were
     * last reset after charging, as an upper-end approximation.
     */
    public abstract int getHighDischargeAmountSinceCharge();

    
Retrieve the discharge amount over the selected discharge period which.
/**
     * Retrieve the discharge amount over the selected discharge period <var>which</var>.
     */
    public abstract int getDischargeAmount(int which);

    
Get the amount the battery has discharged while the screen was on,
since the last time power was unplugged.
/**
     * Get the amount the battery has discharged while the screen was on,
     * since the last time power was unplugged.
     */
    public abstract int getDischargeAmountScreenOn();

    
Get the amount the battery has discharged while the screen was on,
since the last time the device was charged.
/**
     * Get the amount the battery has discharged while the screen was on,
     * since the last time the device was charged.
     */
    public abstract int getDischargeAmountScreenOnSinceCharge();

    
Get the amount the battery has discharged while the screen was off,
since the last time power was unplugged.
/**
     * Get the amount the battery has discharged while the screen was off,
     * since the last time power was unplugged.
     */
    public abstract int getDischargeAmountScreenOff();

    
Get the amount the battery has discharged while the screen was off,
since the last time the device was charged.
/**
     * Get the amount the battery has discharged while the screen was off,
     * since the last time the device was charged.
     */
    public abstract int getDischargeAmountScreenOffSinceCharge();

    
Get the amount the battery has discharged while the screen was dozing,
since the last time power was unplugged.
/**
     * Get the amount the battery has discharged while the screen was dozing,
     * since the last time power was unplugged.
     */
    public abstract int getDischargeAmountScreenDoze();

    
Get the amount the battery has discharged while the screen was dozing,
since the last time the device was charged.
/**
     * Get the amount the battery has discharged while the screen was dozing,
     * since the last time the device was charged.
     */
    public abstract int getDischargeAmountScreenDozeSinceCharge();

    
Returns the total, last, or current battery uptime in microseconds.
Params:
curTime – the elapsed realtime in microseconds.
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT./**
     * Returns the total, last, or current battery uptime in microseconds.
     *
     * @param curTime the elapsed realtime in microseconds.
     * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
     */
    public abstract long computeBatteryUptime(long curTime, int which);

    
Returns the total, last, or current battery realtime in microseconds.
Params:
curTime – the current elapsed realtime in microseconds.
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT./**
     * Returns the total, last, or current battery realtime in microseconds.
     *
     * @param curTime the current elapsed realtime in microseconds.
     * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
     */
    public abstract long computeBatteryRealtime(long curTime, int which);

    
Returns the total, last, or current battery screen off/doze uptime in microseconds.
Params:
curTime – the elapsed realtime in microseconds.
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT./**
     * Returns the total, last, or current battery screen off/doze uptime in microseconds.
     *
     * @param curTime the elapsed realtime in microseconds.
     * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
     */
    public abstract long computeBatteryScreenOffUptime(long curTime, int which);

    
Returns the total, last, or current battery screen off/doze realtime in microseconds.
Params:
curTime – the current elapsed realtime in microseconds.
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT./**
     * Returns the total, last, or current battery screen off/doze realtime in microseconds.
     *
     * @param curTime the current elapsed realtime in microseconds.
     * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
     */
    public abstract long computeBatteryScreenOffRealtime(long curTime, int which);

    
Returns the total, last, or current uptime in microseconds.
Params:
curTime – the current elapsed realtime in microseconds.
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT./**
     * Returns the total, last, or current uptime in microseconds.
     *
     * @param curTime the current elapsed realtime in microseconds.
     * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
     */
    public abstract long computeUptime(long curTime, int which);

    
Returns the total, last, or current realtime in microseconds.
Params:
curTime – the current elapsed realtime in microseconds.
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT./**
     * Returns the total, last, or current realtime in microseconds.
     *
     * @param curTime the current elapsed realtime in microseconds.
     * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
     */
    public abstract long computeRealtime(long curTime, int which);

    
Compute an approximation for how much run time (in microseconds) is remaining on
the battery.  Returns -1 if no time can be computed: either there is not
enough current data to make a decision, or the battery is currently
charging.
Params:
curTime – The current elepsed realtime in microseconds./**
     * Compute an approximation for how much run time (in microseconds) is remaining on
     * the battery.  Returns -1 if no time can be computed: either there is not
     * enough current data to make a decision, or the battery is currently
     * charging.
     *
     * @param curTime The current elepsed realtime in microseconds.
     */
    public abstract long computeBatteryTimeRemaining(long curTime);

    // The part of a step duration that is the actual time.
    public static final long STEP_LEVEL_TIME_MASK = 0x000000ffffffffffL;

    // Bits in a step duration that are the new battery level we are at.
    public static final long STEP_LEVEL_LEVEL_MASK = 0x0000ff0000000000L;
    public static final int STEP_LEVEL_LEVEL_SHIFT = 40;

    // Bits in a step duration that are the initial mode we were in at that step.
    public static final long STEP_LEVEL_INITIAL_MODE_MASK = 0x00ff000000000000L;
    public static final int STEP_LEVEL_INITIAL_MODE_SHIFT = 48;

    // Bits in a step duration that indicate which modes changed during that step.
    public static final long STEP_LEVEL_MODIFIED_MODE_MASK = 0xff00000000000000L;
    public static final int STEP_LEVEL_MODIFIED_MODE_SHIFT = 56;

    // Step duration mode: the screen is on, off, dozed, etc; value is Display.STATE_* - 1.
    public static final int STEP_LEVEL_MODE_SCREEN_STATE = 0x03;

    // The largest value for screen state that is tracked in battery states. Any values above
    // this should be mapped back to one of the tracked values before being tracked here.
    public static final int MAX_TRACKED_SCREEN_STATE = Display.STATE_DOZE_SUSPEND;

    // Step duration mode: power save is on.
    public static final int STEP_LEVEL_MODE_POWER_SAVE = 0x04;

    // Step duration mode: device is currently in idle mode.
    public static final int STEP_LEVEL_MODE_DEVICE_IDLE = 0x08;

    public static final int[] STEP_LEVEL_MODES_OF_INTEREST = new int[] {
            STEP_LEVEL_MODE_SCREEN_STATE|STEP_LEVEL_MODE_POWER_SAVE,
            STEP_LEVEL_MODE_SCREEN_STATE|STEP_LEVEL_MODE_POWER_SAVE|STEP_LEVEL_MODE_DEVICE_IDLE,
            STEP_LEVEL_MODE_SCREEN_STATE|STEP_LEVEL_MODE_DEVICE_IDLE,
            STEP_LEVEL_MODE_SCREEN_STATE|STEP_LEVEL_MODE_POWER_SAVE,
            STEP_LEVEL_MODE_SCREEN_STATE|STEP_LEVEL_MODE_POWER_SAVE,
            STEP_LEVEL_MODE_SCREEN_STATE|STEP_LEVEL_MODE_POWER_SAVE,
            STEP_LEVEL_MODE_SCREEN_STATE|STEP_LEVEL_MODE_POWER_SAVE,
            STEP_LEVEL_MODE_SCREEN_STATE|STEP_LEVEL_MODE_POWER_SAVE,
            STEP_LEVEL_MODE_SCREEN_STATE|STEP_LEVEL_MODE_POWER_SAVE|STEP_LEVEL_MODE_DEVICE_IDLE,
            STEP_LEVEL_MODE_SCREEN_STATE|STEP_LEVEL_MODE_DEVICE_IDLE,
    };
    public static final int[] STEP_LEVEL_MODE_VALUES = new int[] {
            (Display.STATE_OFF-1),
            (Display.STATE_OFF-1)|STEP_LEVEL_MODE_POWER_SAVE,
            (Display.STATE_OFF-1)|STEP_LEVEL_MODE_DEVICE_IDLE,
            (Display.STATE_ON-1),
            (Display.STATE_ON-1)|STEP_LEVEL_MODE_POWER_SAVE,
            (Display.STATE_DOZE-1),
            (Display.STATE_DOZE-1)|STEP_LEVEL_MODE_POWER_SAVE,
            (Display.STATE_DOZE_SUSPEND-1),
            (Display.STATE_DOZE_SUSPEND-1)|STEP_LEVEL_MODE_POWER_SAVE,
            (Display.STATE_DOZE_SUSPEND-1)|STEP_LEVEL_MODE_DEVICE_IDLE,
    };
    public static final String[] STEP_LEVEL_MODE_LABELS = new String[] {
            "screen off",
            "screen off power save",
            "screen off device idle",
            "screen on",
            "screen on power save",
            "screen doze",
            "screen doze power save",
            "screen doze-suspend",
            "screen doze-suspend power save",
            "screen doze-suspend device idle",
    };

    
Return the amount of battery discharge while the screen was off, measured in
micro-Ampere-hours. This will be non-zero only if the device's battery has
a coulomb counter.
/**
     * Return the amount of battery discharge while the screen was off, measured in
     * micro-Ampere-hours. This will be non-zero only if the device's battery has
     * a coulomb counter.
     */
    public abstract long getUahDischargeScreenOff(int which);

    
Return the amount of battery discharge while the screen was in doze mode, measured in
micro-Ampere-hours. This will be non-zero only if the device's battery has
a coulomb counter.
/**
     * Return the amount of battery discharge while the screen was in doze mode, measured in
     * micro-Ampere-hours. This will be non-zero only if the device's battery has
     * a coulomb counter.
     */
    public abstract long getUahDischargeScreenDoze(int which);

    
Return the amount of battery discharge  measured in micro-Ampere-hours. This will be
non-zero only if the device's battery has a coulomb counter.
/**
     * Return the amount of battery discharge  measured in micro-Ampere-hours. This will be
     * non-zero only if the device's battery has a coulomb counter.
     */
    public abstract long getUahDischarge(int which);

    
Returns:
the amount of battery discharge while the device is in light idle mode, measured in
micro-Ampere-hours./**
     * @return the amount of battery discharge while the device is in light idle mode, measured in
     * micro-Ampere-hours.
     */
    public abstract long getUahDischargeLightDoze(int which);

    
Returns:
the amount of battery discharge while the device is in deep idle mode, measured in
micro-Ampere-hours./**
     * @return the amount of battery discharge while the device is in deep idle mode, measured in
     * micro-Ampere-hours.
     */
    public abstract long getUahDischargeDeepDoze(int which);

    
Returns the estimated real battery capacity, which may be less than the capacity
declared by the PowerProfile.
Returns:
The estimated battery capacity in mAh./**
     * Returns the estimated real battery capacity, which may be less than the capacity
     * declared by the PowerProfile.
     * @return The estimated battery capacity in mAh.
     */
    public abstract int getEstimatedBatteryCapacity();

    
Returns:
The minimum learned battery capacity in uAh./**
     * @return The minimum learned battery capacity in uAh.
     */
    public abstract int getMinLearnedBatteryCapacity();

    
Returns:
The maximum learned battery capacity in uAh./**
     * @return The maximum learned battery capacity in uAh.
     */
    public abstract int getMaxLearnedBatteryCapacity() ;

    
Return the array of discharge step durations.
/**
     * Return the array of discharge step durations.
     */
    public abstract LevelStepTracker getDischargeLevelStepTracker();

    
Return the array of daily discharge step durations.
/**
     * Return the array of daily discharge step durations.
     */
    public abstract LevelStepTracker getDailyDischargeLevelStepTracker();

    
Compute an approximation for how much time (in microseconds) remains until the battery
is fully charged.  Returns -1 if no time can be computed: either there is not
enough current data to make a decision, or the battery is currently
discharging.
Params:
curTime – The current elepsed realtime in microseconds./**
     * Compute an approximation for how much time (in microseconds) remains until the battery
     * is fully charged.  Returns -1 if no time can be computed: either there is not
     * enough current data to make a decision, or the battery is currently
     * discharging.
     *
     * @param curTime The current elepsed realtime in microseconds.
     */
    public abstract long computeChargeTimeRemaining(long curTime);

    
Return the array of charge step durations.
/**
     * Return the array of charge step durations.
     */
    public abstract LevelStepTracker getChargeLevelStepTracker();

    
Return the array of daily charge step durations.
/**
     * Return the array of daily charge step durations.
     */
    public abstract LevelStepTracker getDailyChargeLevelStepTracker();

    public abstract ArrayList<PackageChange> getDailyPackageChanges();

    public abstract Map<String, ? extends Timer> getWakeupReasonStats();

    public abstract Map<String, ? extends Timer> getKernelWakelockStats();

    
Returns Timers tracking the total time of each Resource Power Manager state and voter.
/**
     * Returns Timers tracking the total time of each Resource Power Manager state and voter.
     */
    public abstract Map<String, ? extends Timer> getRpmStats();
    
Returns Timers tracking the screen-off time of each Resource Power Manager state and voter.
/**
     * Returns Timers tracking the screen-off time of each Resource Power Manager state and voter.
     */
    public abstract Map<String, ? extends Timer> getScreenOffRpmStats();


    public abstract LongSparseArray<? extends Timer> getKernelMemoryStats();

    public abstract void writeToParcelWithoutUids(Parcel out, int flags);

    private final static void formatTimeRaw(StringBuilder out, long seconds) {
        long days = seconds / (60 * 60 * 24);
        if (days != 0) {
            out.append(days);
            out.append("d ");
        }
        long used = days * 60 * 60 * 24;

        long hours = (seconds - used) / (60 * 60);
        if (hours != 0 || used != 0) {
            out.append(hours);
            out.append("h ");
        }
        used += hours * 60 * 60;

        long mins = (seconds-used) / 60;
        if (mins != 0 || used != 0) {
            out.append(mins);
            out.append("m ");
        }
        used += mins * 60;

        if (seconds != 0 || used != 0) {
            out.append(seconds-used);
            out.append("s ");
        }
    }

    public final static void formatTimeMs(StringBuilder sb, long time) {
        long sec = time / 1000;
        formatTimeRaw(sb, sec);
        sb.append(time - (sec * 1000));
        sb.append("ms ");
    }

    public final static void formatTimeMsNoSpace(StringBuilder sb, long time) {
        long sec = time / 1000;
        formatTimeRaw(sb, sec);
        sb.append(time - (sec * 1000));
        sb.append("ms");
    }

    public final String formatRatioLocked(long num, long den) {
        if (den == 0L) {
            return "--%";
        }
        float perc = ((float)num) / ((float)den) * 100;
        mFormatBuilder.setLength(0);
        mFormatter.format("%.1f%%", perc);
        return mFormatBuilder.toString();
    }

    final String formatBytesLocked(long bytes) {
        mFormatBuilder.setLength(0);

        if (bytes < BYTES_PER_KB) {
            return bytes + "B";
        } else if (bytes < BYTES_PER_MB) {
            mFormatter.format("%.2fKB", bytes / (double) BYTES_PER_KB);
            return mFormatBuilder.toString();
        } else if (bytes < BYTES_PER_GB){
            mFormatter.format("%.2fMB", bytes / (double) BYTES_PER_MB);
            return mFormatBuilder.toString();
        } else {
            mFormatter.format("%.2fGB", bytes / (double) BYTES_PER_GB);
            return mFormatBuilder.toString();
        }
    }

    private static long roundUsToMs(long timeUs) {
        return (timeUs + 500) / 1000;
    }

    private static long computeWakeLock(Timer timer, long elapsedRealtimeUs, int which) {
        if (timer != null) {
            // Convert from microseconds to milliseconds with rounding
            long totalTimeMicros = timer.getTotalTimeLocked(elapsedRealtimeUs, which);
            long totalTimeMillis = (totalTimeMicros + 500) / 1000;
            return totalTimeMillis;
        }
        return 0;
    }

    
Params:
sb – a StringBuilder object.
timer – a Timer object contining the wakelock times.
elapsedRealtimeUs – the current on-battery time in microseconds.
name – the name of the wakelock.
which – which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
linePrefix – a String to be prepended to each line of output.
Returns:
the line prefix/**
     *
     * @param sb a StringBuilder object.
     * @param timer a Timer object contining the wakelock times.
     * @param elapsedRealtimeUs the current on-battery time in microseconds.
     * @param name the name of the wakelock.
     * @param which which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
     * @param linePrefix a String to be prepended to each line of output.
     * @return the line prefix
     */
    private static final String printWakeLock(StringBuilder sb, Timer timer,
            long elapsedRealtimeUs, String name, int which, String linePrefix) {

        if (timer != null) {
            long totalTimeMillis = computeWakeLock(timer, elapsedRealtimeUs, which);

            int count = timer.getCountLocked(which);
            if (totalTimeMillis != 0) {
                sb.append(linePrefix);
                formatTimeMs(sb, totalTimeMillis);
                if (name != null) {
                    sb.append(name);
                    sb.append(' ');
                }
                sb.append('(');
                sb.append(count);
                sb.append(" times)");
                final long maxDurationMs = timer.getMaxDurationMsLocked(elapsedRealtimeUs/1000);
                if (maxDurationMs >= 0) {
                    sb.append(" max=");
                    sb.append(maxDurationMs);
                }
                // Put actual time if it is available and different from totalTimeMillis.
                final long totalDurMs = timer.getTotalDurationMsLocked(elapsedRealtimeUs/1000);
                if (totalDurMs > totalTimeMillis) {
                    sb.append(" actual=");
                    sb.append(totalDurMs);
                }
                if (timer.isRunningLocked()) {
                    final long currentMs = timer.getCurrentDurationMsLocked(elapsedRealtimeUs/1000);
                    if (currentMs >= 0) {
                        sb.append(" (running for ");
                        sb.append(currentMs);
                        sb.append("ms)");
                    } else {
                        sb.append(" (running)");
                    }
                }

                return ", ";
            }
        }
        return linePrefix;
    }

    
Prints details about a timer, if its total time was greater than 0.
Params:
pw – a PrintWriter object to print to.
sb – a StringBuilder object.
timer – a Timer object contining the wakelock times.
rawRealtimeUs – the current on-battery time in microseconds.
which – which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
prefix – a String to be prepended to each line of output.
type – the name of the timer.
Returns:
true if anything was printed./**
     * Prints details about a timer, if its total time was greater than 0.
     *
     * @param pw a PrintWriter object to print to.
     * @param sb a StringBuilder object.
     * @param timer a Timer object contining the wakelock times.
     * @param rawRealtimeUs the current on-battery time in microseconds.
     * @param which which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
     * @param prefix a String to be prepended to each line of output.
     * @param type the name of the timer.
     * @return true if anything was printed.
     */
    private static final boolean printTimer(PrintWriter pw, StringBuilder sb, Timer timer,
            long rawRealtimeUs, int which, String prefix, String type) {
        if (timer != null) {
            // Convert from microseconds to milliseconds with rounding
            final long totalTimeMs = (timer.getTotalTimeLocked(
                    rawRealtimeUs, which) + 500) / 1000;
            final int count = timer.getCountLocked(which);
            if (totalTimeMs != 0) {
                sb.setLength(0);
                sb.append(prefix);
                sb.append("    ");
                sb.append(type);
                sb.append(": ");
                formatTimeMs(sb, totalTimeMs);
                sb.append("realtime (");
                sb.append(count);
                sb.append(" times)");
                final long maxDurationMs = timer.getMaxDurationMsLocked(rawRealtimeUs/1000);
                if (maxDurationMs >= 0) {
                    sb.append(" max=");
                    sb.append(maxDurationMs);
                }
                if (timer.isRunningLocked()) {
                    final long currentMs = timer.getCurrentDurationMsLocked(rawRealtimeUs/1000);
                    if (currentMs >= 0) {
                        sb.append(" (running for ");
                        sb.append(currentMs);
                        sb.append("ms)");
                    } else {
                        sb.append(" (running)");
                    }
                }
                pw.println(sb.toString());
                return true;
            }
        }
        return false;
    }

    
Checkin version of wakelock printer. Prints simple comma-separated list.
Params:
sb – a StringBuilder object.
timer – a Timer object contining the wakelock times.
elapsedRealtimeUs – the current time in microseconds.
name – the name of the wakelock.
which – which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
linePrefix – a String to be prepended to each line of output.
Returns:
the line prefix/**
     * Checkin version of wakelock printer. Prints simple comma-separated list.
     *
     * @param sb a StringBuilder object.
     * @param timer a Timer object contining the wakelock times.
     * @param elapsedRealtimeUs the current time in microseconds.
     * @param name the name of the wakelock.
     * @param which which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT.
     * @param linePrefix a String to be prepended to each line of output.
     * @return the line prefix
     */
    private static final String printWakeLockCheckin(StringBuilder sb, Timer timer,
            long elapsedRealtimeUs, String name, int which, String linePrefix) {
        long totalTimeMicros = 0;
        int count = 0;
        long max = 0;
        long current = 0;
        long totalDuration = 0;
        if (timer != null) {
            totalTimeMicros = timer.getTotalTimeLocked(elapsedRealtimeUs, which);
            count = timer.getCountLocked(which);
            current = timer.getCurrentDurationMsLocked(elapsedRealtimeUs/1000);
            max = timer.getMaxDurationMsLocked(elapsedRealtimeUs/1000);
            totalDuration = timer.getTotalDurationMsLocked(elapsedRealtimeUs/1000);
        }
        sb.append(linePrefix);
        sb.append((totalTimeMicros + 500) / 1000); // microseconds to milliseconds with rounding
        sb.append(',');
        sb.append(name != null ? name + "," : "");
        sb.append(count);
        sb.append(',');
        sb.append(current);
        sb.append(',');
        sb.append(max);
        // Partial, full, and window wakelocks are pooled, so totalDuration is meaningful (albeit
        // not always tracked). Kernel wakelocks (which have name == null) have no notion of
        // totalDuration independent of totalTimeMicros (since they are not pooled).
        if (name != null) {
            sb.append(',');
            sb.append(totalDuration);
        }
        return ",";
    }

    private static final void dumpLineHeader(PrintWriter pw, int uid, String category,
                                             String type) {
        pw.print(BATTERY_STATS_CHECKIN_VERSION);
        pw.print(',');
        pw.print(uid);
        pw.print(',');
        pw.print(category);
        pw.print(',');
        pw.print(type);
    }

    
Dump a comma-separated line of values for terse checkin mode.
Params:
pw – the PageWriter to dump log to
category – category of data (e.g. "total", "last", "unplugged", "current" )
type – type of data (e.g. "wakelock", "sensor", "process", "apk" ,  "process", "network")
args – type-dependent data arguments/**
     * Dump a comma-separated line of values for terse checkin mode.
     *
     * @param pw the PageWriter to dump log to
     * @param category category of data (e.g. "total", "last", "unplugged", "current" )
     * @param type type of data (e.g. "wakelock", "sensor", "process", "apk" ,  "process", "network")
     * @param args type-dependent data arguments
     */
    private static final void dumpLine(PrintWriter pw, int uid, String category, String type,
           Object... args ) {
        dumpLineHeader(pw, uid, category, type);
        for (Object arg : args) {
            pw.print(',');
            pw.print(arg);
        }
        pw.println();
    }

    
Dump a given timer stat for terse checkin mode.
Params:
pw – the PageWriter to dump log to
uid – the UID to log
category – category of data (e.g. "total", "last", "unplugged", "current" )
type – type of data (e.g. "wakelock", "sensor", "process", "apk" ,  "process", "network")
timer – a Timer to dump stats for
rawRealtime – the current elapsed realtime of the system in microseconds
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT/**
     * Dump a given timer stat for terse checkin mode.
     *
     * @param pw the PageWriter to dump log to
     * @param uid the UID to log
     * @param category category of data (e.g. "total", "last", "unplugged", "current" )
     * @param type type of data (e.g. "wakelock", "sensor", "process", "apk" ,  "process", "network")
     * @param timer a {@link Timer} to dump stats for
     * @param rawRealtime the current elapsed realtime of the system in microseconds
     * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT
     */
    private static final void dumpTimer(PrintWriter pw, int uid, String category, String type,
                                        Timer timer, long rawRealtime, int which) {
        if (timer != null) {
            // Convert from microseconds to milliseconds with rounding
            final long totalTime = roundUsToMs(timer.getTotalTimeLocked(rawRealtime, which));
            final int count = timer.getCountLocked(which);
            if (totalTime != 0 || count != 0) {
                dumpLine(pw, uid, category, type, totalTime, count);
            }
        }
    }

    
Dump a given timer stat to the proto stream.
Params:
proto – the ProtoOutputStream to log to
fieldId – type of data, the field to save to (e.g. AggregatedBatteryStats.WAKELOCK)
timer – a Timer to dump stats for
rawRealtimeUs – the current elapsed realtime of the system in microseconds
which – one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT/**
     * Dump a given timer stat to the proto stream.
     *
     * @param proto the ProtoOutputStream to log to
     * @param fieldId type of data, the field to save to (e.g. AggregatedBatteryStats.WAKELOCK)
     * @param timer a {@link Timer} to dump stats for
     * @param rawRealtimeUs the current elapsed realtime of the system in microseconds
     * @param which one of STATS_SINCE_CHARGED, STATS_SINCE_UNPLUGGED, or STATS_CURRENT
     */
    private static void dumpTimer(ProtoOutputStream proto, long fieldId,
                                        Timer timer, long rawRealtimeUs, int which) {
        if (timer == null) {
            return;
        }
        // Convert from microseconds to milliseconds with rounding
        final long timeMs = roundUsToMs(timer.getTotalTimeLocked(rawRealtimeUs, which));
        final int count = timer.getCountLocked(which);
        final long maxDurationMs = timer.getMaxDurationMsLocked(rawRealtimeUs / 1000);
        final long curDurationMs = timer.getCurrentDurationMsLocked(rawRealtimeUs / 1000);
        final long totalDurationMs = timer.getTotalDurationMsLocked(rawRealtimeUs / 1000);
        if (timeMs != 0 || count != 0 || maxDurationMs != -1 || curDurationMs != -1
                || totalDurationMs != -1) {
            final long token = proto.start(fieldId);
            proto.write(TimerProto.DURATION_MS, timeMs);
            proto.write(TimerProto.COUNT, count);
            // These values will be -1 for timers that don't implement the functionality.
            if (maxDurationMs != -1) {
                proto.write(TimerProto.MAX_DURATION_MS, maxDurationMs);
            }
            if (curDurationMs != -1) {
                proto.write(TimerProto.CURRENT_DURATION_MS, curDurationMs);
            }
            if (totalDurationMs != -1) {
                proto.write(TimerProto.TOTAL_DURATION_MS, totalDurationMs);
            }
            proto.end(token);
        }
    }

    
Checks if the ControllerActivityCounter has any data worth dumping.
/**
     * Checks if the ControllerActivityCounter has any data worth dumping.
     */
    private static boolean controllerActivityHasData(ControllerActivityCounter counter, int which) {
        if (counter == null) {
            return false;
        }

        if (counter.getIdleTimeCounter().getCountLocked(which) != 0
                || counter.getRxTimeCounter().getCountLocked(which) != 0
                || counter.getPowerCounter().getCountLocked(which) != 0) {
            return true;
        }

        for (LongCounter c : counter.getTxTimeCounters()) {
            if (c.getCountLocked(which) != 0) {
                return true;
            }
        }
        return false;
    }

    
Dumps the ControllerActivityCounter if it has any data worth dumping.
The order of the arguments in the final check in line is:
idle, rx, power, tx...
where tx... is one or more transmit level times.
/**
     * Dumps the ControllerActivityCounter if it has any data worth dumping.
     * The order of the arguments in the final check in line is:
     *
     * idle, rx, power, tx...
     *
     * where tx... is one or more transmit level times.
     */
    private static final void dumpControllerActivityLine(PrintWriter pw, int uid, String category,
                                                         String type,
                                                         ControllerActivityCounter counter,
                                                         int which) {
        if (!controllerActivityHasData(counter, which)) {
            return;
        }

        dumpLineHeader(pw, uid, category, type);
        pw.print(",");
        pw.print(counter.getIdleTimeCounter().getCountLocked(which));
        pw.print(",");
        pw.print(counter.getRxTimeCounter().getCountLocked(which));
        pw.print(",");
        pw.print(counter.getPowerCounter().getCountLocked(which) / (1000 * 60 * 60));
        for (LongCounter c : counter.getTxTimeCounters()) {
            pw.print(",");
            pw.print(c.getCountLocked(which));
        }
        pw.println();
    }

    
Dumps the ControllerActivityCounter if it has any data worth dumping.
/**
     * Dumps the ControllerActivityCounter if it has any data worth dumping.
     */
    private static void dumpControllerActivityProto(ProtoOutputStream proto, long fieldId,
                                                    ControllerActivityCounter counter,
                                                    int which) {
        if (!controllerActivityHasData(counter, which)) {
            return;
        }

        final long cToken = proto.start(fieldId);

        proto.write(ControllerActivityProto.IDLE_DURATION_MS,
                counter.getIdleTimeCounter().getCountLocked(which));
        proto.write(ControllerActivityProto.RX_DURATION_MS,
                counter.getRxTimeCounter().getCountLocked(which));
        proto.write(ControllerActivityProto.POWER_MAH,
                counter.getPowerCounter().getCountLocked(which) / (1000 * 60 * 60));

        long tToken;
        LongCounter[] txCounters = counter.getTxTimeCounters();
        for (int i = 0; i < txCounters.length; ++i) {
            LongCounter c = txCounters[i];
            tToken = proto.start(ControllerActivityProto.TX);
            proto.write(ControllerActivityProto.TxLevel.LEVEL, i);
            proto.write(ControllerActivityProto.TxLevel.DURATION_MS, c.getCountLocked(which));
            proto.end(tToken);
        }

        proto.end(cToken);
    }

    private final void printControllerActivityIfInteresting(PrintWriter pw, StringBuilder sb,
                                                            String prefix, String controllerName,
                                                            ControllerActivityCounter counter,
                                                            int which) {
        if (controllerActivityHasData(counter, which)) {
            printControllerActivity(pw, sb, prefix, controllerName, counter, which);
        }
    }

    private final void printControllerActivity(PrintWriter pw, StringBuilder sb, String prefix,
                                               String controllerName,
                                               ControllerActivityCounter counter, int which) {
        final long idleTimeMs = counter.getIdleTimeCounter().getCountLocked(which);
        final long rxTimeMs = counter.getRxTimeCounter().getCountLocked(which);
        final long powerDrainMaMs = counter.getPowerCounter().getCountLocked(which);
        // Battery real time
        final long totalControllerActivityTimeMs
            = computeBatteryRealtime(SystemClock.elapsedRealtime() * 1000, which) / 1000;
        long totalTxTimeMs = 0;
        for (LongCounter txState : counter.getTxTimeCounters()) {
            totalTxTimeMs += txState.getCountLocked(which);
        }

        if (controllerName.equals(WIFI_CONTROLLER_NAME)) {
            final long scanTimeMs = counter.getScanTimeCounter().getCountLocked(which);
            sb.setLength(0);
            sb.append(prefix);
            sb.append("     ");
            sb.append(controllerName);
            sb.append(" Scan time:  ");
            formatTimeMs(sb, scanTimeMs);
            sb.append("(");
            sb.append(formatRatioLocked(scanTimeMs, totalControllerActivityTimeMs));
            sb.append(")");
            pw.println(sb.toString());

            final long sleepTimeMs
                = totalControllerActivityTimeMs - (idleTimeMs + rxTimeMs + totalTxTimeMs);
            sb.setLength(0);
            sb.append(prefix);
            sb.append("     ");
            sb.append(controllerName);
            sb.append(" Sleep time:  ");
            formatTimeMs(sb, sleepTimeMs);
            sb.append("(");
            sb.append(formatRatioLocked(sleepTimeMs, totalControllerActivityTimeMs));
            sb.append(")");
            pw.println(sb.toString());
        }

        if (controllerName.equals(CELLULAR_CONTROLLER_NAME)) {
            final long sleepTimeMs = counter.getSleepTimeCounter().getCountLocked(which);
            sb.setLength(0);
            sb.append(prefix);
            sb.append("     ");
            sb.append(controllerName);
            sb.append(" Sleep time:  ");
            formatTimeMs(sb, sleepTimeMs);
            sb.append("(");
            sb.append(formatRatioLocked(sleepTimeMs, totalControllerActivityTimeMs));
            sb.append(")");
            pw.println(sb.toString());
        }

        sb.setLength(0);
        sb.append(prefix);
        sb.append("     ");
        sb.append(controllerName);
        sb.append(" Idle time:   ");
        formatTimeMs(sb, idleTimeMs);
        sb.append("(");
        sb.append(formatRatioLocked(idleTimeMs, totalControllerActivityTimeMs));
        sb.append(")");
        pw.println(sb.toString());

        sb.setLength(0);
        sb.append(prefix);
        sb.append("     ");
        sb.append(controllerName);
        sb.append(" Rx time:     ");
        formatTimeMs(sb, rxTimeMs);
        sb.append("(");
        sb.append(formatRatioLocked(rxTimeMs, totalControllerActivityTimeMs));
        sb.append(")");
        pw.println(sb.toString());

        sb.setLength(0);
        sb.append(prefix);
        sb.append("     ");
        sb.append(controllerName);
        sb.append(" Tx time:     ");

        String [] powerLevel;
        switch(controllerName) {
            case CELLULAR_CONTROLLER_NAME:
                powerLevel = new String[] {
                    "   less than 0dBm: ",
                    "   0dBm to 8dBm: ",
                    "   8dBm to 15dBm: ",
                    "   15dBm to 20dBm: ",
                    "   above 20dBm: "};
                break;
            default:
                powerLevel = new String[] {"[0]", "[1]", "[2]", "[3]", "[4]"};
                break;
        }
        final int numTxLvls = Math.min(counter.getTxTimeCounters().length, powerLevel.length);
        if (numTxLvls > 1) {
            pw.println(sb.toString());
            for (int lvl = 0; lvl < numTxLvls; lvl++) {
                final long txLvlTimeMs = counter.getTxTimeCounters()[lvl].getCountLocked(which);
                sb.setLength(0);
                sb.append(prefix);
                sb.append("    ");
                sb.append(powerLevel[lvl]);
                sb.append(" ");
                formatTimeMs(sb, txLvlTimeMs);
                sb.append("(");
                sb.append(formatRatioLocked(txLvlTimeMs, totalControllerActivityTimeMs));
                sb.append(")");
                pw.println(sb.toString());
            }
        } else {
            final long txLvlTimeMs = counter.getTxTimeCounters()[0].getCountLocked(which);
            formatTimeMs(sb, txLvlTimeMs);
            sb.append("(");
            sb.append(formatRatioLocked(txLvlTimeMs, totalControllerActivityTimeMs));
            sb.append(")");
            pw.println(sb.toString());
        }

        if (powerDrainMaMs > 0) {
            sb.setLength(0);
            sb.append(prefix);
            sb.append("     ");
            sb.append(controllerName);
            sb.append(" Battery drain: ").append(
                BatteryStatsHelper.makemAh(powerDrainMaMs / (double) (1000*60*60)));
            sb.append("mAh");
            pw.println(sb.toString());
        }
    }

    
Temporary for settings.
/**
     * Temporary for settings.
     */
    public final void dumpCheckinLocked(Context context, PrintWriter pw, int which, int reqUid) {
        dumpCheckinLocked(context, pw, which, reqUid, BatteryStatsHelper.checkWifiOnly(context));
    }

    
Checkin server version of dump to produce more compact, computer-readable log.
NOTE: all times are expressed in microseconds, unless specified otherwise.
/**
     * Checkin server version of dump to produce more compact, computer-readable log.
     *
     * NOTE: all times are expressed in microseconds, unless specified otherwise.
     */
    public final void dumpCheckinLocked(Context context, PrintWriter pw, int which, int reqUid,
            boolean wifiOnly) {
        final long rawUptime = SystemClock.uptimeMillis() * 1000;
        final long rawRealtimeMs = SystemClock.elapsedRealtime();
        final long rawRealtime = rawRealtimeMs * 1000;
        final long batteryUptime = getBatteryUptime(rawUptime);
        final long whichBatteryUptime = computeBatteryUptime(rawUptime, which);
        final long whichBatteryRealtime = computeBatteryRealtime(rawRealtime, which);
        final long whichBatteryScreenOffUptime = computeBatteryScreenOffUptime(rawUptime, which);
        final long whichBatteryScreenOffRealtime = computeBatteryScreenOffRealtime(rawRealtime,
                which);
        final long totalRealtime = computeRealtime(rawRealtime, which);
        final long totalUptime = computeUptime(rawUptime, which);
        final long screenOnTime = getScreenOnTime(rawRealtime, which);
        final long screenDozeTime = getScreenDozeTime(rawRealtime, which);
        final long interactiveTime = getInteractiveTime(rawRealtime, which);
        final long powerSaveModeEnabledTime = getPowerSaveModeEnabledTime(rawRealtime, which);
        final long deviceIdleModeLightTime = getDeviceIdleModeTime(DEVICE_IDLE_MODE_LIGHT,
                rawRealtime, which);
        final long deviceIdleModeFullTime = getDeviceIdleModeTime(DEVICE_IDLE_MODE_DEEP,
                rawRealtime, which);
        final long deviceLightIdlingTime = getDeviceIdlingTime(DEVICE_IDLE_MODE_LIGHT,
                rawRealtime, which);
        final long deviceIdlingTime = getDeviceIdlingTime(DEVICE_IDLE_MODE_DEEP,
                rawRealtime, which);
        final int connChanges = getNumConnectivityChange(which);
        final long phoneOnTime = getPhoneOnTime(rawRealtime, which);
        final long dischargeCount = getUahDischarge(which);
        final long dischargeScreenOffCount = getUahDischargeScreenOff(which);
        final long dischargeScreenDozeCount = getUahDischargeScreenDoze(which);
        final long dischargeLightDozeCount = getUahDischargeLightDoze(which);
        final long dischargeDeepDozeCount = getUahDischargeDeepDoze(which);

        final StringBuilder sb = new StringBuilder(128);

        final SparseArray<? extends Uid> uidStats = getUidStats();
        final int NU = uidStats.size();

        final String category = STAT_NAMES[which];

        // Dump "battery" stat
        dumpLine(pw, 0 /* uid */, category, BATTERY_DATA,
                which == STATS_SINCE_CHARGED ? getStartCount() : "N/A",
                whichBatteryRealtime / 1000, whichBatteryUptime / 1000,
                totalRealtime / 1000, totalUptime / 1000,
                getStartClockTime(),
                whichBatteryScreenOffRealtime / 1000, whichBatteryScreenOffUptime / 1000,
                getEstimatedBatteryCapacity(),
                getMinLearnedBatteryCapacity(), getMaxLearnedBatteryCapacity(),
                screenDozeTime / 1000);


        // Calculate wakelock times across all uids.
        long fullWakeLockTimeTotal = 0;
        long partialWakeLockTimeTotal = 0;

        for (int iu = 0; iu < NU; iu++) {
            final Uid u = uidStats.valueAt(iu);

            final ArrayMap<String, ? extends BatteryStats.Uid.Wakelock> wakelocks
                    = u.getWakelockStats();
            for (int iw=wakelocks.size()-1; iw>=0; iw--) {
                final Uid.Wakelock wl = wakelocks.valueAt(iw);

                final Timer fullWakeTimer = wl.getWakeTime(WAKE_TYPE_FULL);
                if (fullWakeTimer != null) {
                    fullWakeLockTimeTotal += fullWakeTimer.getTotalTimeLocked(rawRealtime,
                            which);
                }

                final Timer partialWakeTimer = wl.getWakeTime(WAKE_TYPE_PARTIAL);
                if (partialWakeTimer != null) {
                    partialWakeLockTimeTotal += partialWakeTimer.getTotalTimeLocked(
                        rawRealtime, which);
                }
            }
        }

        // Dump network stats
        final long mobileRxTotalBytes = getNetworkActivityBytes(NETWORK_MOBILE_RX_DATA, which);
        final long mobileTxTotalBytes = getNetworkActivityBytes(NETWORK_MOBILE_TX_DATA, which);
        final long wifiRxTotalBytes = getNetworkActivityBytes(NETWORK_WIFI_RX_DATA, which);
        final long wifiTxTotalBytes = getNetworkActivityBytes(NETWORK_WIFI_TX_DATA, which);
        final long mobileRxTotalPackets = getNetworkActivityPackets(NETWORK_MOBILE_RX_DATA, which);
        final long mobileTxTotalPackets = getNetworkActivityPackets(NETWORK_MOBILE_TX_DATA, which);
        final long wifiRxTotalPackets = getNetworkActivityPackets(NETWORK_WIFI_RX_DATA, which);
        final long wifiTxTotalPackets = getNetworkActivityPackets(NETWORK_WIFI_TX_DATA, which);
        final long btRxTotalBytes = getNetworkActivityBytes(NETWORK_BT_RX_DATA, which);
        final long btTxTotalBytes = getNetworkActivityBytes(NETWORK_BT_TX_DATA, which);
        dumpLine(pw, 0 /* uid */, category, GLOBAL_NETWORK_DATA,
                mobileRxTotalBytes, mobileTxTotalBytes, wifiRxTotalBytes, wifiTxTotalBytes,
                mobileRxTotalPackets, mobileTxTotalPackets, wifiRxTotalPackets, wifiTxTotalPackets,
                btRxTotalBytes, btTxTotalBytes);

        // Dump Modem controller stats
        dumpControllerActivityLine(pw, 0 /* uid */, category, GLOBAL_MODEM_CONTROLLER_DATA,
                getModemControllerActivity(), which);

        // Dump Wifi controller stats
        final long wifiOnTime = getWifiOnTime(rawRealtime, which);
        final long wifiRunningTime = getGlobalWifiRunningTime(rawRealtime, which);
        dumpLine(pw, 0 /* uid */, category, GLOBAL_WIFI_DATA, wifiOnTime / 1000,
                wifiRunningTime / 1000, /* legacy fields follow, keep at 0 */ 0, 0, 0);

        dumpControllerActivityLine(pw, 0 /* uid */, category, GLOBAL_WIFI_CONTROLLER_DATA,
                getWifiControllerActivity(), which);

        // Dump Bluetooth controller stats
        dumpControllerActivityLine(pw, 0 /* uid */, category, GLOBAL_BLUETOOTH_CONTROLLER_DATA,
                getBluetoothControllerActivity(), which);

        // Dump misc stats
        dumpLine(pw, 0 /* uid */, category, MISC_DATA,
                screenOnTime / 1000, phoneOnTime / 1000,
                fullWakeLockTimeTotal / 1000, partialWakeLockTimeTotal / 1000,
                getMobileRadioActiveTime(rawRealtime, which) / 1000,
                getMobileRadioActiveAdjustedTime(which) / 1000, interactiveTime / 1000,
                powerSaveModeEnabledTime / 1000, connChanges, deviceIdleModeFullTime / 1000,
                getDeviceIdleModeCount(DEVICE_IDLE_MODE_DEEP, which), deviceIdlingTime / 1000,
                getDeviceIdlingCount(DEVICE_IDLE_MODE_DEEP, which),
                getMobileRadioActiveCount(which),
                getMobileRadioActiveUnknownTime(which) / 1000, deviceIdleModeLightTime / 1000,
                getDeviceIdleModeCount(DEVICE_IDLE_MODE_LIGHT, which), deviceLightIdlingTime / 1000,
                getDeviceIdlingCount(DEVICE_IDLE_MODE_LIGHT, which),
                getLongestDeviceIdleModeTime(DEVICE_IDLE_MODE_LIGHT),
                getLongestDeviceIdleModeTime(DEVICE_IDLE_MODE_DEEP));

        // Dump screen brightness stats
        Object[] args = new Object[NUM_SCREEN_BRIGHTNESS_BINS];
        for (int i=0; i<NUM_SCREEN_BRIGHTNESS_BINS; i++) {
            args[i] = getScreenBrightnessTime(i, rawRealtime, which) / 1000;
        }
        dumpLine(pw, 0 /* uid */, category, SCREEN_BRIGHTNESS_DATA, args);

        // Dump signal strength stats
        args = new Object[SignalStrength.NUM_SIGNAL_STRENGTH_BINS];
        for (int i=0; i<SignalStrength.NUM_SIGNAL_STRENGTH_BINS; i++) {
            args[i] = getPhoneSignalStrengthTime(i, rawRealtime, which) / 1000;
        }
        dumpLine(pw, 0 /* uid */, category, SIGNAL_STRENGTH_TIME_DATA, args);
        dumpLine(pw, 0 /* uid */, category, SIGNAL_SCANNING_TIME_DATA,
                getPhoneSignalScanningTime(rawRealtime, which) / 1000);
        for (int i=0; i<SignalStrength.NUM_SIGNAL_STRENGTH_BINS; i++) {
            args[i] = getPhoneSignalStrengthCount(i, which);
        }
        dumpLine(pw, 0 /* uid */, category, SIGNAL_STRENGTH_COUNT_DATA, args);

        // Dump network type stats
        args = new Object[NUM_DATA_CONNECTION_TYPES];
        for (int i=0; i<NUM_DATA_CONNECTION_TYPES; i++) {
            args[i] = getPhoneDataConnectionTime(i, rawRealtime, which) / 1000;
        }
        dumpLine(pw, 0 /* uid */, category, DATA_CONNECTION_TIME_DATA, args);
        for (int i=0; i<NUM_DATA_CONNECTION_TYPES; i++) {
            args[i] = getPhoneDataConnectionCount(i, which);
        }
        dumpLine(pw, 0 /* uid */, category, DATA_CONNECTION_COUNT_DATA, args);

        // Dump wifi state stats
        args = new Object[NUM_WIFI_STATES];
        for (int i=0; i<NUM_WIFI_STATES; i++) {
            args[i] = getWifiStateTime(i, rawRealtime, which) / 1000;
        }
        dumpLine(pw, 0 /* uid */, category, WIFI_STATE_TIME_DATA, args);
        for (int i=0; i<NUM_WIFI_STATES; i++) {
            args[i] = getWifiStateCount(i, which);
        }
        dumpLine(pw, 0 /* uid */, category, WIFI_STATE_COUNT_DATA, args);

        // Dump wifi suppl state stats
        args = new Object[NUM_WIFI_SUPPL_STATES];
        for (int i=0; i<NUM_WIFI_SUPPL_STATES; i++) {
            args[i] = getWifiSupplStateTime(i, rawRealtime, which) / 1000;
        }
        dumpLine(pw, 0 /* uid */, category, WIFI_SUPPL_STATE_TIME_DATA, args);
        for (int i=0; i<NUM_WIFI_SUPPL_STATES; i++) {
            args[i] = getWifiSupplStateCount(i, which);
        }
        dumpLine(pw, 0 /* uid */, category, WIFI_SUPPL_STATE_COUNT_DATA, args);

        // Dump wifi signal strength stats
        args = new Object[NUM_WIFI_SIGNAL_STRENGTH_BINS];
        for (int i=0; i<NUM_WIFI_SIGNAL_STRENGTH_BINS; i++) {
            args[i] = getWifiSignalStrengthTime(i, rawRealtime, which) / 1000;
        }
        dumpLine(pw, 0 /* uid */, category, WIFI_SIGNAL_STRENGTH_TIME_DATA, args);
        for (int i=0; i<NUM_WIFI_SIGNAL_STRENGTH_BINS; i++) {
            args[i] = getWifiSignalStrengthCount(i, which);
        }
        dumpLine(pw, 0 /* uid */, category, WIFI_SIGNAL_STRENGTH_COUNT_DATA, args);

        // Dump Multicast total stats
        final long multicastWakeLockTimeTotalMicros =
                getWifiMulticastWakelockTime(rawRealtime, which);
        final int multicastWakeLockCountTotal = getWifiMulticastWakelockCount(which);
        dumpLine(pw, 0 /* uid */, category, WIFI_MULTICAST_TOTAL_DATA,
                multicastWakeLockTimeTotalMicros / 1000,
                multicastWakeLockCountTotal);

        if (which == STATS_SINCE_UNPLUGGED) {
            dumpLine(pw, 0 /* uid */, category, BATTERY_LEVEL_DATA, getDischargeStartLevel(),
                    getDischargeCurrentLevel());
        }

        if (which == STATS_SINCE_UNPLUGGED) {
            dumpLine(pw, 0 /* uid */, category, BATTERY_DISCHARGE_DATA,
                    getDischargeStartLevel()-getDischargeCurrentLevel(),
                    getDischargeStartLevel()-getDischargeCurrentLevel(),
                    getDischargeAmountScreenOn(), getDischargeAmountScreenOff(),
                    dischargeCount / 1000, dischargeScreenOffCount / 1000,
                    getDischargeAmountScreenDoze(), dischargeScreenDozeCount / 1000,
                    dischargeLightDozeCount / 1000, dischargeDeepDozeCount / 1000);
        } else {
            dumpLine(pw, 0 /* uid */, category, BATTERY_DISCHARGE_DATA,
                    getLowDischargeAmountSinceCharge(), getHighDischargeAmountSinceCharge(),
                    getDischargeAmountScreenOnSinceCharge(),
                    getDischargeAmountScreenOffSinceCharge(),
                    dischargeCount / 1000, dischargeScreenOffCount / 1000,
                    getDischargeAmountScreenDozeSinceCharge(), dischargeScreenDozeCount / 1000,
                    dischargeLightDozeCount / 1000, dischargeDeepDozeCount / 1000);
        }

        if (reqUid < 0) {
            final Map<String, ? extends Timer> kernelWakelocks = getKernelWakelockStats();
            if (kernelWakelocks.size() > 0) {
                for (Map.Entry<String, ? extends Timer> ent : kernelWakelocks.entrySet()) {
                    sb.setLength(0);
                    printWakeLockCheckin(sb, ent.getValue(), rawRealtime, null, which, "");
                    dumpLine(pw, 0 /* uid */, category, KERNEL_WAKELOCK_DATA,
                            "\"" + ent.getKey() + "\"", sb.toString());
                }
            }
            final Map<String, ? extends Timer> wakeupReasons = getWakeupReasonStats();
            if (wakeupReasons.size() > 0) {
                for (Map.Entry<String, ? extends Timer> ent : wakeupReasons.entrySet()) {
                    // Not doing the regular wake lock formatting to remain compatible
                    // with the old checkin format.
                    long totalTimeMicros = ent.getValue().getTotalTimeLocked(rawRealtime, which);
                    int count = ent.getValue().getCountLocked(which);
                    dumpLine(pw, 0 /* uid */, category, WAKEUP_REASON_DATA,
                            "\"" + ent.getKey() + "\"", (totalTimeMicros + 500) / 1000, count);
                }
            }
        }

        final Map<String, ? extends Timer> rpmStats = getRpmStats();
        final Map<String, ? extends Timer> screenOffRpmStats = getScreenOffRpmStats();
        if (rpmStats.size() > 0) {
            for (Map.Entry<String, ? extends Timer> ent : rpmStats.entrySet()) {
                sb.setLength(0);
                Timer totalTimer = ent.getValue();
                long timeMs = (totalTimer.getTotalTimeLocked(rawRealtime, which) + 500) / 1000;
                int count = totalTimer.getCountLocked(which);
                Timer screenOffTimer = screenOffRpmStats.get(ent.getKey());
                long screenOffTimeMs = screenOffTimer != null
                        ? (screenOffTimer.getTotalTimeLocked(rawRealtime, which) + 500) / 1000 : 0;
                int screenOffCount = screenOffTimer != null
                        ? screenOffTimer.getCountLocked(which) : 0;
                if (SCREEN_OFF_RPM_STATS_ENABLED) {
                    dumpLine(pw, 0 /* uid */, category, RESOURCE_POWER_MANAGER_DATA,
                            "\"" + ent.getKey() + "\"", timeMs, count, screenOffTimeMs,
                            screenOffCount);
                } else {
                    dumpLine(pw, 0 /* uid */, category, RESOURCE_POWER_MANAGER_DATA,
                            "\"" + ent.getKey() + "\"", timeMs, count);
                }
            }
        }

        final BatteryStatsHelper helper = new BatteryStatsHelper(context, false, wifiOnly);
        helper.create(this);
        helper.refreshStats(which, UserHandle.USER_ALL);
        final List<BatterySipper> sippers = helper.getUsageList();
        if (sippers != null && sippers.size() > 0) {
            dumpLine(pw, 0 /* uid */, category, POWER_USE_SUMMARY_DATA,
                    BatteryStatsHelper.makemAh(helper.getPowerProfile().getBatteryCapacity()),
                    BatteryStatsHelper.makemAh(helper.getComputedPower()),
                    BatteryStatsHelper.makemAh(helper.getMinDrainedPower()),
                    BatteryStatsHelper.makemAh(helper.getMaxDrainedPower()));
            int uid = 0;
            for (int i=0; i<sippers.size(); i++) {
                final BatterySipper bs = sippers.get(i);
                String label;
                switch (bs.drainType) {
                    case AMBIENT_DISPLAY:
                        label = "ambi";
                        break;
                    case IDLE:
                        label="idle";
                        break;
                    case CELL:
                        label="cell";
                        break;
                    case PHONE:
                        label="phone";
                        break;
                    case WIFI:
                        label="wifi";
                        break;
                    case BLUETOOTH:
                        label="blue";
                        break;
                    case SCREEN:
                        label="scrn";
                        break;
                    case FLASHLIGHT:
                        label="flashlight";
                        break;
                    case APP:
                        uid = bs.uidObj.getUid();
                        label = "uid";
                        break;
                    case USER:
                        uid = UserHandle.getUid(bs.userId, 0);
                        label = "user";
                        break;
                    case UNACCOUNTED:
                        label = "unacc";
                        break;
                    case OVERCOUNTED:
                        label = "over";
                        break;
                    case CAMERA:
                        label = "camera";
                        break;
                    case MEMORY:
                        label = "memory";
                        break;
                    default:
                        label = "???";
                }
                dumpLine(pw, uid, category, POWER_USE_ITEM_DATA, label,
                        BatteryStatsHelper.makemAh(bs.totalPowerMah),
                        bs.shouldHide ? 1 : 0,
                        BatteryStatsHelper.makemAh(bs.screenPowerMah),
                        BatteryStatsHelper.makemAh(bs.proportionalSmearMah));
            }
        }

        final long[] cpuFreqs = getCpuFreqs();
        if (cpuFreqs != null) {
            sb.setLength(0);
            for (int i = 0; i < cpuFreqs.length; ++i) {
                sb.append((i == 0 ? "" : ",") + cpuFreqs[i]);
            }
            dumpLine(pw, 0 /* uid */, category, GLOBAL_CPU_FREQ_DATA, sb.toString());
        }

        // Dump stats per UID.
        for (int iu = 0; iu < NU; iu++) {
            final int uid = uidStats.keyAt(iu);
            if (reqUid >= 0 && uid != reqUid) {
                continue;
            }
            final Uid u = uidStats.valueAt(iu);

            // Dump Network stats per uid, if any
            final long mobileBytesRx = u.getNetworkActivityBytes(NETWORK_MOBILE_RX_DATA, which);
            final long mobileBytesTx = u.getNetworkActivityBytes(NETWORK_MOBILE_TX_DATA, which);
            final long wifiBytesRx = u.getNetworkActivityBytes(NETWORK_WIFI_RX_DATA, which);
            final long wifiBytesTx = u.getNetworkActivityBytes(NETWORK_WIFI_TX_DATA, which);
            final long mobilePacketsRx = u.getNetworkActivityPackets(NETWORK_MOBILE_RX_DATA, which);
            final long mobilePacketsTx = u.getNetworkActivityPackets(NETWORK_MOBILE_TX_DATA, which);
            final long mobileActiveTime = u.getMobileRadioActiveTime(which);
            final int mobileActiveCount = u.getMobileRadioActiveCount(which);
            final long mobileWakeup = u.getMobileRadioApWakeupCount(which);
            final long wifiPacketsRx = u.getNetworkActivityPackets(NETWORK_WIFI_RX_DATA, which);
            final long wifiPacketsTx = u.getNetworkActivityPackets(NETWORK_WIFI_TX_DATA, which);
            final long wifiWakeup = u.getWifiRadioApWakeupCount(which);
            final long btBytesRx = u.getNetworkActivityBytes(NETWORK_BT_RX_DATA, which);
            final long btBytesTx = u.getNetworkActivityBytes(NETWORK_BT_TX_DATA, which);
            // Background data transfers
            final long mobileBytesBgRx = u.getNetworkActivityBytes(NETWORK_MOBILE_BG_RX_DATA,
                    which);
            final long mobileBytesBgTx = u.getNetworkActivityBytes(NETWORK_MOBILE_BG_TX_DATA,
                    which);
            final long wifiBytesBgRx = u.getNetworkActivityBytes(NETWORK_WIFI_BG_RX_DATA, which);
            final long wifiBytesBgTx = u.getNetworkActivityBytes(NETWORK_WIFI_BG_TX_DATA, which);
            final long mobilePacketsBgRx = u.getNetworkActivityPackets(NETWORK_MOBILE_BG_RX_DATA,
                    which);
            final long mobilePacketsBgTx = u.getNetworkActivityPackets(NETWORK_MOBILE_BG_TX_DATA,
                    which);
            final long wifiPacketsBgRx = u.getNetworkActivityPackets(NETWORK_WIFI_BG_RX_DATA,
                    which);
            final long wifiPacketsBgTx = u.getNetworkActivityPackets(NETWORK_WIFI_BG_TX_DATA,
                    which);

            if (mobileBytesRx > 0 || mobileBytesTx > 0 || wifiBytesRx > 0 || wifiBytesTx > 0
                    || mobilePacketsRx > 0 || mobilePacketsTx > 0 || wifiPacketsRx > 0
                    || wifiPacketsTx > 0 || mobileActiveTime > 0 || mobileActiveCount > 0
                    || btBytesRx > 0 || btBytesTx > 0 || mobileWakeup > 0 || wifiWakeup > 0
                    || mobileBytesBgRx > 0 || mobileBytesBgTx > 0 || wifiBytesBgRx > 0
                    || wifiBytesBgTx > 0
                    || mobilePacketsBgRx > 0 || mobilePacketsBgTx > 0 || wifiPacketsBgRx > 0
                    || wifiPacketsBgTx > 0) {
                dumpLine(pw, uid, category, NETWORK_DATA, mobileBytesRx, mobileBytesTx,
                        wifiBytesRx, wifiBytesTx,
                        mobilePacketsRx, mobilePacketsTx,
                        wifiPacketsRx, wifiPacketsTx,
                        mobileActiveTime, mobileActiveCount,
                        btBytesRx, btBytesTx, mobileWakeup, wifiWakeup,
                        mobileBytesBgRx, mobileBytesBgTx, wifiBytesBgRx, wifiBytesBgTx,
                        mobilePacketsBgRx, mobilePacketsBgTx, wifiPacketsBgRx, wifiPacketsBgTx
                        );
            }

            // Dump modem controller data, per UID.
            dumpControllerActivityLine(pw, uid, category, MODEM_CONTROLLER_DATA,
                    u.getModemControllerActivity(), which);

            // Dump Wifi controller data, per UID.
            final long fullWifiLockOnTime = u.getFullWifiLockTime(rawRealtime, which);
            final long wifiScanTime = u.getWifiScanTime(rawRealtime, which);
            final int wifiScanCount = u.getWifiScanCount(which);
            final int wifiScanCountBg = u.getWifiScanBackgroundCount(which);
            // Note that 'ActualTime' are unpooled and always since reset (regardless of 'which')
            final long wifiScanActualTimeMs = (u.getWifiScanActualTime(rawRealtime) + 500) / 1000;
            final long wifiScanActualTimeMsBg = (u.getWifiScanBackgroundTime(rawRealtime) + 500)
                    / 1000;
            final long uidWifiRunningTime = u.getWifiRunningTime(rawRealtime, which);
            if (fullWifiLockOnTime != 0 || wifiScanTime != 0 || wifiScanCount != 0
                    || wifiScanCountBg != 0 || wifiScanActualTimeMs != 0
                    || wifiScanActualTimeMsBg != 0 || uidWifiRunningTime != 0) {
                dumpLine(pw, uid, category, WIFI_DATA, fullWifiLockOnTime, wifiScanTime,
                        uidWifiRunningTime, wifiScanCount,
                        /* legacy fields follow, keep at 0 */ 0, 0, 0,
                        wifiScanCountBg, wifiScanActualTimeMs, wifiScanActualTimeMsBg);
            }

            dumpControllerActivityLine(pw, uid, category, WIFI_CONTROLLER_DATA,
                    u.getWifiControllerActivity(), which);

            final Timer bleTimer = u.getBluetoothScanTimer();
            if (bleTimer != null) {
                // Convert from microseconds to milliseconds with rounding
                final long totalTime = (bleTimer.getTotalTimeLocked(rawRealtime, which) + 500)
                        / 1000;
                if (totalTime != 0) {
                    final int count = bleTimer.getCountLocked(which);
                    final Timer bleTimerBg = u.getBluetoothScanBackgroundTimer();
                    final int countBg = bleTimerBg != null ? bleTimerBg.getCountLocked(which) : 0;
                    // 'actualTime' are unpooled and always since reset (regardless of 'which')
                    final long actualTime = bleTimer.getTotalDurationMsLocked(rawRealtimeMs);
                    final long actualTimeBg = bleTimerBg != null ?
                            bleTimerBg.getTotalDurationMsLocked(rawRealtimeMs) : 0;
                    // Result counters
                    final int resultCount = u.getBluetoothScanResultCounter() != null ?
                            u.getBluetoothScanResultCounter().getCountLocked(which) : 0;
                    final int resultCountBg = u.getBluetoothScanResultBgCounter() != null ?
                            u.getBluetoothScanResultBgCounter().getCountLocked(which) : 0;
                    // Unoptimized scan timer. Unpooled and since reset (regardless of 'which').
                    final Timer unoptimizedScanTimer = u.getBluetoothUnoptimizedScanTimer();
                    final long unoptimizedScanTotalTime = unoptimizedScanTimer != null ?
                            unoptimizedScanTimer.getTotalDurationMsLocked(rawRealtimeMs) : 0;
                    final long unoptimizedScanMaxTime = unoptimizedScanTimer != null ?
                            unoptimizedScanTimer.getMaxDurationMsLocked(rawRealtimeMs) : 0;
                    // Unoptimized bg scan timer. Unpooled and since reset (regardless of 'which').
                    final Timer unoptimizedScanTimerBg =
                            u.getBluetoothUnoptimizedScanBackgroundTimer();
                    final long unoptimizedScanTotalTimeBg = unoptimizedScanTimerBg != null ?
                            unoptimizedScanTimerBg.getTotalDurationMsLocked(rawRealtimeMs) : 0;
                    final long unoptimizedScanMaxTimeBg = unoptimizedScanTimerBg != null ?
                            unoptimizedScanTimerBg.getMaxDurationMsLocked(rawRealtimeMs) : 0;

                    dumpLine(pw, uid, category, BLUETOOTH_MISC_DATA, totalTime, count,
                            countBg, actualTime, actualTimeBg, resultCount, resultCountBg,
                            unoptimizedScanTotalTime, unoptimizedScanTotalTimeBg,
                            unoptimizedScanMaxTime, unoptimizedScanMaxTimeBg);
                }
            }

            dumpControllerActivityLine(pw, uid, category, BLUETOOTH_CONTROLLER_DATA,
                    u.getBluetoothControllerActivity(), which);

            if (u.hasUserActivity()) {
                args = new Object[Uid.NUM_USER_ACTIVITY_TYPES];
                boolean hasData = false;
                for (int i=0; i<Uid.NUM_USER_ACTIVITY_TYPES; i++) {
                    int val = u.getUserActivityCount(i, which);
                    args[i] = val;
                    if (val != 0) hasData = true;
                }
                if (hasData) {
                    dumpLine(pw, uid /* uid */, category, USER_ACTIVITY_DATA, args);
                }
            }

            if (u.getAggregatedPartialWakelockTimer() != null) {
                final Timer timer = u.getAggregatedPartialWakelockTimer();
                // Times are since reset (regardless of 'which')
                final long totTimeMs = timer.getTotalDurationMsLocked(rawRealtimeMs);
                final Timer bgTimer = timer.getSubTimer();
                final long bgTimeMs = bgTimer != null ?
                        bgTimer.getTotalDurationMsLocked(rawRealtimeMs) : 0;
                dumpLine(pw, uid, category, AGGREGATED_WAKELOCK_DATA, totTimeMs, bgTimeMs);
            }

            final ArrayMap<String, ? extends Uid.Wakelock> wakelocks = u.getWakelockStats();
            for (int iw=wakelocks.size()-1; iw>=0; iw--) {
                final Uid.Wakelock wl = wakelocks.valueAt(iw);
                String linePrefix = "";
                sb.setLength(0);
                linePrefix = printWakeLockCheckin(sb, wl.getWakeTime(WAKE_TYPE_FULL),
                        rawRealtime, "f", which, linePrefix);
                final Timer pTimer = wl.getWakeTime(WAKE_TYPE_PARTIAL);
                linePrefix = printWakeLockCheckin(sb, pTimer,
                        rawRealtime, "p", which, linePrefix);
                linePrefix = printWakeLockCheckin(sb, pTimer != null ? pTimer.getSubTimer() : null,
                        rawRealtime, "bp", which, linePrefix);
                linePrefix = printWakeLockCheckin(sb, wl.getWakeTime(WAKE_TYPE_WINDOW),
                        rawRealtime, "w", which, linePrefix);

                // Only log if we had at least one wakelock...
                if (sb.length() > 0) {
                    String name = wakelocks.keyAt(iw);
                    if (name.indexOf(',') >= 0) {
                        name = name.replace(',', '_');
                    }
                    if (name.indexOf('\n') >= 0) {
                        name = name.replace('\n', '_');
                    }
                    if (name.indexOf('\r') >= 0) {
                        name = name.replace('\r', '_');
                    }
                    dumpLine(pw, uid, category, WAKELOCK_DATA, name, sb.toString());
                }
            }

            // WiFi Multicast Wakelock Statistics
            final Timer mcTimer = u.getMulticastWakelockStats();
            if (mcTimer != null) {
                final long totalMcWakelockTimeMs =
                        mcTimer.getTotalTimeLocked(rawRealtime, which) / 1000 ;
                final int countMcWakelock = mcTimer.getCountLocked(which);
                if(totalMcWakelockTimeMs > 0) {
                    dumpLine(pw, uid, category, WIFI_MULTICAST_DATA,
                            totalMcWakelockTimeMs, countMcWakelock);
                }
            }

            final ArrayMap<String, ? extends Timer> syncs = u.getSyncStats();
            for (int isy=syncs.size()-1; isy>=0; isy--) {
                final Timer timer = syncs.valueAt(isy);
                // Convert from microseconds to milliseconds with rounding
                final long totalTime = (timer.getTotalTimeLocked(rawRealtime, which) + 500) / 1000;
                final int count = timer.getCountLocked(which);
                final Timer bgTimer = timer.getSubTimer();
                final long bgTime = bgTimer != null ?
                        bgTimer.getTotalDurationMsLocked(rawRealtimeMs) : -1;
                final int bgCount = bgTimer != null ? bgTimer.getCountLocked(which) : -1;
                if (totalTime != 0) {
                    dumpLine(pw, uid, category, SYNC_DATA, "\"" + syncs.keyAt(isy) + "\"",
                            totalTime, count, bgTime, bgCount);
                }
            }

            final ArrayMap<String, ? extends Timer> jobs = u.getJobStats();
            for (int ij=jobs.size()-1; ij>=0; ij--) {
                final Timer timer = jobs.valueAt(ij);
                // Convert from microseconds to milliseconds with rounding
                final long totalTime = (timer.getTotalTimeLocked(rawRealtime, which) + 500) / 1000;
                final int count = timer.getCountLocked(which);
                final Timer bgTimer = timer.getSubTimer();
                final long bgTime = bgTimer != null ?
                        bgTimer.getTotalDurationMsLocked(rawRealtimeMs) : -1;
                final int bgCount = bgTimer != null ? bgTimer.getCountLocked(which) : -1;
                if (totalTime != 0) {
                    dumpLine(pw, uid, category, JOB_DATA, "\"" + jobs.keyAt(ij) + "\"",
                            totalTime, count, bgTime, bgCount);
                }
            }

            final ArrayMap<String, SparseIntArray> completions = u.getJobCompletionStats();
            for (int ic=completions.size()-1; ic>=0; ic--) {
                SparseIntArray types = completions.valueAt(ic);
                if (types != null) {
                    dumpLine(pw, uid, category, JOB_COMPLETION_DATA,
                            "\"" + completions.keyAt(ic) + "\"",
                            types.get(JobParameters.REASON_CANCELED, 0),
                            types.get(JobParameters.REASON_CONSTRAINTS_NOT_SATISFIED, 0),
                            types.get(JobParameters.REASON_PREEMPT, 0),
                            types.get(JobParameters.REASON_TIMEOUT, 0),
                            types.get(JobParameters.REASON_DEVICE_IDLE, 0));
                }
            }

            // Dump deferred jobs stats
            u.getDeferredJobsCheckinLineLocked(sb, which);
            if (sb.length() > 0) {
                dumpLine(pw, uid, category, JOBS_DEFERRED_DATA, sb.toString());
            }

            dumpTimer(pw, uid, category, FLASHLIGHT_DATA, u.getFlashlightTurnedOnTimer(),
                    rawRealtime, which);
            dumpTimer(pw, uid, category, CAMERA_DATA, u.getCameraTurnedOnTimer(),
                    rawRealtime, which);
            dumpTimer(pw, uid, category, VIDEO_DATA, u.getVideoTurnedOnTimer(),
                    rawRealtime, which);
            dumpTimer(pw, uid, category, AUDIO_DATA, u.getAudioTurnedOnTimer(),
                    rawRealtime, which);

            final SparseArray<? extends BatteryStats.Uid.Sensor> sensors = u.getSensorStats();
            final int NSE = sensors.size();
            for (int ise=0; ise<NSE; ise++) {
                final Uid.Sensor se = sensors.valueAt(ise);
                final int sensorNumber = sensors.keyAt(ise);
                final Timer timer = se.getSensorTime();
                if (timer != null) {
                    // Convert from microseconds to milliseconds with rounding
                    final long totalTime = (timer.getTotalTimeLocked(rawRealtime, which) + 500)
                            / 1000;
                    if (totalTime != 0) {
                        final int count = timer.getCountLocked(which);
                        final Timer bgTimer = se.getSensorBackgroundTime();
                        final int bgCount = bgTimer != null ? bgTimer.getCountLocked(which) : 0;
                        // 'actualTime' are unpooled and always since reset (regardless of 'which')
                        final long actualTime = timer.getTotalDurationMsLocked(rawRealtimeMs);
                        final long bgActualTime = bgTimer != null ?
                                bgTimer.getTotalDurationMsLocked(rawRealtimeMs) : 0;
                        dumpLine(pw, uid, category, SENSOR_DATA, sensorNumber, totalTime,
                                count, bgCount, actualTime, bgActualTime);
                    }
                }
            }

            dumpTimer(pw, uid, category, VIBRATOR_DATA, u.getVibratorOnTimer(),
                    rawRealtime, which);

            dumpTimer(pw, uid, category, FOREGROUND_ACTIVITY_DATA, u.getForegroundActivityTimer(),
                    rawRealtime, which);

            dumpTimer(pw, uid, category, FOREGROUND_SERVICE_DATA, u.getForegroundServiceTimer(),
                    rawRealtime, which);

            final Object[] stateTimes = new Object[Uid.NUM_PROCESS_STATE];
            long totalStateTime = 0;
            for (int ips=0; ips<Uid.NUM_PROCESS_STATE; ips++) {
                final long time = u.getProcessStateTime(ips, rawRealtime, which);
                totalStateTime += time;
                stateTimes[ips] = (time + 500) / 1000;
            }
            if (totalStateTime > 0) {
                dumpLine(pw, uid, category, STATE_TIME_DATA, stateTimes);
            }

            final long userCpuTimeUs = u.getUserCpuTimeUs(which);
            final long systemCpuTimeUs = u.getSystemCpuTimeUs(which);
            if (userCpuTimeUs > 0 || systemCpuTimeUs > 0) {
                dumpLine(pw, uid, category, CPU_DATA, userCpuTimeUs / 1000, systemCpuTimeUs / 1000,
                        0 /* old cpu power, keep for compatibility */);
            }

            // If the cpuFreqs is null, then don't bother checking for cpu freq times.
            if (cpuFreqs != null) {
                final long[] cpuFreqTimeMs = u.getCpuFreqTimes(which);
                // If total cpuFreqTimes is null, then we don't need to check for
                // screenOffCpuFreqTimes.
                if (cpuFreqTimeMs != null && cpuFreqTimeMs.length == cpuFreqs.length) {
                    sb.setLength(0);
                    for (int i = 0; i < cpuFreqTimeMs.length; ++i) {
                        sb.append((i == 0 ? "" : ",") + cpuFreqTimeMs[i]);
                    }
                    final long[] screenOffCpuFreqTimeMs = u.getScreenOffCpuFreqTimes(which);
                    if (screenOffCpuFreqTimeMs != null) {
                        for (int i = 0; i < screenOffCpuFreqTimeMs.length; ++i) {
                            sb.append("," + screenOffCpuFreqTimeMs[i]);
                        }
                    } else {
                        for (int i = 0; i < cpuFreqTimeMs.length; ++i) {
                            sb.append(",0");
                        }
                    }
                    dumpLine(pw, uid, category, CPU_TIMES_AT_FREQ_DATA, UID_TIMES_TYPE_ALL,
                            cpuFreqTimeMs.length, sb.toString());
                }

                for (int procState = 0; procState < Uid.NUM_PROCESS_STATE; ++procState) {
                    final long[] timesMs = u.getCpuFreqTimes(which, procState);
                    if (timesMs != null && timesMs.length == cpuFreqs.length) {
                        sb.setLength(0);
                        for (int i = 0; i < timesMs.length; ++i) {
                            sb.append((i == 0 ? "" : ",") + timesMs[i]);
                        }
                        final long[] screenOffTimesMs = u.getScreenOffCpuFreqTimes(
                                which, procState);
                        if (screenOffTimesMs != null) {
                            for (int i = 0; i < screenOffTimesMs.length; ++i) {
                                sb.append("," + screenOffTimesMs[i]);
                            }
                        } else {
                            for (int i = 0; i < timesMs.length; ++i) {
                                sb.append(",0");
                            }
                        }
                        dumpLine(pw, uid, category, CPU_TIMES_AT_FREQ_DATA,
                                Uid.UID_PROCESS_TYPES[procState], timesMs.length, sb.toString());
                    }
                }
            }

            final ArrayMap<String, ? extends BatteryStats.Uid.Proc> processStats
                    = u.getProcessStats();
            for (int ipr=processStats.size()-1; ipr>=0; ipr--) {
                final Uid.Proc ps = processStats.valueAt(ipr);

                final long userMillis = ps.getUserTime(which);
                final long systemMillis = ps.getSystemTime(which);
                final long foregroundMillis = ps.getForegroundTime(which);
                final int starts = ps.getStarts(which);
                final int numCrashes = ps.getNumCrashes(which);
                final int numAnrs = ps.getNumAnrs(which);

                if (userMillis != 0 || systemMillis != 0 || foregroundMillis != 0
                        || starts != 0 || numAnrs != 0 || numCrashes != 0) {
                    dumpLine(pw, uid, category, PROCESS_DATA, "\"" + processStats.keyAt(ipr) + "\"",
                            userMillis, systemMillis, foregroundMillis, starts, numAnrs, numCrashes);
                }
            }

            final ArrayMap<String, ? extends BatteryStats.Uid.Pkg> packageStats
                    = u.getPackageStats();
            for (int ipkg=packageStats.size()-1; ipkg>=0; ipkg--) {
                final Uid.Pkg ps = packageStats.valueAt(ipkg);
                int wakeups = 0;
                final ArrayMap<String, ? extends Counter> alarms = ps.getWakeupAlarmStats();
                for (int iwa=alarms.size()-1; iwa>=0; iwa--) {
                    int count = alarms.valueAt(iwa).getCountLocked(which);
                    wakeups += count;
                    String name = alarms.keyAt(iwa).replace(',', '_');
                    dumpLine(pw, uid, category, WAKEUP_ALARM_DATA, name, count);
                }
                final ArrayMap<String, ? extends  Uid.Pkg.Serv> serviceStats = ps.getServiceStats();
                for (int isvc=serviceStats.size()-1; isvc>=0; isvc--) {
                    final BatteryStats.Uid.Pkg.Serv ss = serviceStats.valueAt(isvc);
                    final long startTime = ss.getStartTime(batteryUptime, which);
                    final int starts = ss.getStarts(which);
                    final int launches = ss.getLaunches(which);
                    if (startTime != 0 || starts != 0 || launches != 0) {
                        dumpLine(pw, uid, category, APK_DATA,
                                wakeups, // wakeup alarms
                                packageStats.keyAt(ipkg), // Apk
                                serviceStats.keyAt(isvc), // service
                                startTime / 1000, // time spent started, in ms
                                starts,
                                launches);
                    }
                }
            }
        }
    }

    static final class TimerEntry {
        final String mName;
        final int mId;
        final BatteryStats.Timer mTimer;
        final long mTime;
        TimerEntry(String name, int id, BatteryStats.Timer timer, long time) {
            mName = name;
            mId = id;
            mTimer = timer;
            mTime = time;
        }
    }

    private void printmAh(PrintWriter printer, double power) {
        printer.print(BatteryStatsHelper.makemAh(power));
    }

    private void printmAh(StringBuilder sb, double power) {
        sb.append(BatteryStatsHelper.makemAh(power));
    }

    
Temporary for settings.
/**
     * Temporary for settings.
     */
    public final void dumpLocked(Context context, PrintWriter pw, String prefix, int which,
            int reqUid) {
        dumpLocked(context, pw, prefix, which, reqUid, BatteryStatsHelper.checkWifiOnly(context));
    }

    @SuppressWarnings("unused")
    public final void dumpLocked(Context context, PrintWriter pw, String prefix, final int which,
            int reqUid, boolean wifiOnly) {
        final long rawUptime = SystemClock.uptimeMillis() * 1000;
        final long rawRealtime = SystemClock.elapsedRealtime() * 1000;
        final long rawRealtimeMs = (rawRealtime + 500) / 1000;
        final long batteryUptime = getBatteryUptime(rawUptime);

        final long whichBatteryUptime = computeBatteryUptime(rawUptime, which);
        final long whichBatteryRealtime = computeBatteryRealtime(rawRealtime, which);
        final long totalRealtime = computeRealtime(rawRealtime, which);
        final long totalUptime = computeUptime(rawUptime, which);
        final long whichBatteryScreenOffUptime = computeBatteryScreenOffUptime(rawUptime, which);
        final long whichBatteryScreenOffRealtime = computeBatteryScreenOffRealtime(rawRealtime,
                which);
        final long batteryTimeRemaining = computeBatteryTimeRemaining(rawRealtime);
        final long chargeTimeRemaining = computeChargeTimeRemaining(rawRealtime);
        final long screenDozeTime = getScreenDozeTime(rawRealtime, which);

        final StringBuilder sb = new StringBuilder(128);

        final SparseArray<? extends Uid> uidStats = getUidStats();
        final int NU = uidStats.size();

        final int estimatedBatteryCapacity = getEstimatedBatteryCapacity();
        if (estimatedBatteryCapacity > 0) {
            sb.setLength(0);
            sb.append(prefix);
                sb.append("  Estimated battery capacity: ");
                sb.append(BatteryStatsHelper.makemAh(estimatedBatteryCapacity));
                sb.append(" mAh");
            pw.println(sb.toString());
        }

        final int minLearnedBatteryCapacity = getMinLearnedBatteryCapacity();
        if (minLearnedBatteryCapacity > 0) {
            sb.setLength(0);
            sb.append(prefix);
                sb.append("  Min learned battery capacity: ");
                sb.append(BatteryStatsHelper.makemAh(minLearnedBatteryCapacity / 1000));
                sb.append(" mAh");
            pw.println(sb.toString());
        }
        final int maxLearnedBatteryCapacity = getMaxLearnedBatteryCapacity();
        if (maxLearnedBatteryCapacity > 0) {
            sb.setLength(0);
            sb.append(prefix);
                sb.append("  Max learned battery capacity: ");
                sb.append(BatteryStatsHelper.makemAh(maxLearnedBatteryCapacity / 1000));
                sb.append(" mAh");
            pw.println(sb.toString());
        }

        sb.setLength(0);
        sb.append(prefix);
        sb.append("  Time on battery: ");
        formatTimeMs(sb, whichBatteryRealtime / 1000); sb.append("(");
        sb.append(formatRatioLocked(whichBatteryRealtime, totalRealtime));
        sb.append(") realtime, ");
        formatTimeMs(sb, whichBatteryUptime / 1000);
        sb.append("("); sb.append(formatRatioLocked(whichBatteryUptime, whichBatteryRealtime));
        sb.append(") uptime");
        pw.println(sb.toString());

        sb.setLength(0);
        sb.append(prefix);
        sb.append("  Time on battery screen off: ");
        formatTimeMs(sb, whichBatteryScreenOffRealtime / 1000); sb.append("(");
        sb.append(formatRatioLocked(whichBatteryScreenOffRealtime, whichBatteryRealtime));
        sb.append(") realtime, ");
        formatTimeMs(sb, whichBatteryScreenOffUptime / 1000);
        sb.append("(");
        sb.append(formatRatioLocked(whichBatteryScreenOffUptime, whichBatteryRealtime));
        sb.append(") uptime");
        pw.println(sb.toString());

        sb.setLength(0);
        sb.append(prefix);
        sb.append("  Time on battery screen doze: ");
        formatTimeMs(sb, screenDozeTime / 1000); sb.append("(");
        sb.append(formatRatioLocked(screenDozeTime, whichBatteryRealtime));
        sb.append(")");
        pw.println(sb.toString());

        sb.setLength(0);
        sb.append(prefix);
                sb.append("  Total run time: ");
                formatTimeMs(sb, totalRealtime / 1000);
                sb.append("realtime, ");
                formatTimeMs(sb, totalUptime / 1000);
                sb.append("uptime");
        pw.println(sb.toString());
        if (batteryTimeRemaining >= 0) {
            sb.setLength(0);
            sb.append(prefix);
                    sb.append("  Battery time remaining: ");
                    formatTimeMs(sb, batteryTimeRemaining / 1000);
            pw.println(sb.toString());
        }
        if (chargeTimeRemaining >= 0) {
            sb.setLength(0);
            sb.append(prefix);
                    sb.append("  Charge time remaining: ");
                    formatTimeMs(sb, chargeTimeRemaining / 1000);
            pw.println(sb.toString());
        }

        final long dischargeCount = getUahDischarge(which);
        if (dischargeCount >= 0) {
            sb.setLength(0);
            sb.append(prefix);
                sb.append("  Discharge: ");
                sb.append(BatteryStatsHelper.makemAh(dischargeCount / 1000.0));
                sb.append(" mAh");
            pw.println(sb.toString());
        }

        final long dischargeScreenOffCount = getUahDischargeScreenOff(which);
        if (dischargeScreenOffCount >= 0) {
            sb.setLength(0);
            sb.append(prefix);
                sb.append("  Screen off discharge: ");
                sb.append(BatteryStatsHelper.makemAh(dischargeScreenOffCount / 1000.0));
                sb.append(" mAh");
            pw.println(sb.toString());
        }

        final long dischargeScreenDozeCount = getUahDischargeScreenDoze(which);
        if (dischargeScreenDozeCount >= 0) {
            sb.setLength(0);
            sb.append(prefix);
            sb.append("  Screen doze discharge: ");
            sb.append(BatteryStatsHelper.makemAh(dischargeScreenDozeCount / 1000.0));
            sb.append(" mAh");
            pw.println(sb.toString());
        }

        final long dischargeScreenOnCount = dischargeCount - dischargeScreenOffCount;
        if (dischargeScreenOnCount >= 0) {
            sb.setLength(0);
            sb.append(prefix);
                sb.append("  Screen on discharge: ");
                sb.append(BatteryStatsHelper.makemAh(dischargeScreenOnCount / 1000.0));
                sb.append(" mAh");
            pw.println(sb.toString());
        }

        final long dischargeLightDozeCount = getUahDischargeLightDoze(which);
        if (dischargeLightDozeCount >= 0) {
            sb.setLength(0);
            sb.append(prefix);
            sb.append("  Device light doze discharge: ");
            sb.append(BatteryStatsHelper.makemAh(dischargeLightDozeCount / 1000.0));
            sb.append(" mAh");
            pw.println(sb.toString());
        }

        final long dischargeDeepDozeCount = getUahDischargeDeepDoze(which);
        if (dischargeDeepDozeCount >= 0) {
            sb.setLength(0);
            sb.append(prefix);
            sb.append("  Device deep doze discharge: ");
            sb.append(BatteryStatsHelper.makemAh(dischargeDeepDozeCount / 1000.0));
            sb.append(" mAh");
            pw.println(sb.toString());
        }

        pw.print("  Start clock time: ");
        pw.println(DateFormat.format("yyyy-MM-dd-HH-mm-ss", getStartClockTime()).toString());

        final long screenOnTime = getScreenOnTime(rawRealtime, which);
        final long interactiveTime = getInteractiveTime(rawRealtime, which);
        final long powerSaveModeEnabledTime = getPowerSaveModeEnabledTime(rawRealtime, which);
        final long deviceIdleModeLightTime = getDeviceIdleModeTime(DEVICE_IDLE_MODE_LIGHT,
                rawRealtime, which);
        final long deviceIdleModeFullTime = getDeviceIdleModeTime(DEVICE_IDLE_MODE_DEEP,
                rawRealtime, which);
        final long deviceLightIdlingTime = getDeviceIdlingTime(DEVICE_IDLE_MODE_LIGHT,
                rawRealtime, which);
        final long deviceIdlingTime = getDeviceIdlingTime(DEVICE_IDLE_MODE_DEEP,
                rawRealtime, which);
        final long phoneOnTime = getPhoneOnTime(rawRealtime, which);
        final long wifiRunningTime = getGlobalWifiRunningTime(rawRealtime, which);
        final long wifiOnTime = getWifiOnTime(rawRealtime, which);
        sb.setLength(0);
        sb.append(prefix);
                sb.append("  Screen on: "); formatTimeMs(sb, screenOnTime / 1000);
                sb.append("("); sb.append(formatRatioLocked(screenOnTime, whichBatteryRealtime));
                sb.append(") "); sb.append(getScreenOnCount(which));
                sb.append("x, Interactive: "); formatTimeMs(sb, interactiveTime / 1000);
                sb.append("("); sb.append(formatRatioLocked(interactiveTime, whichBatteryRealtime));
                sb.append(")");
        pw.println(sb.toString());
        sb.setLength(0);
        sb.append(prefix);
        sb.append("  Screen brightnesses:");
        boolean didOne = false;
        for (int i=0; i<NUM_SCREEN_BRIGHTNESS_BINS; i++) {
            final long time = getScreenBrightnessTime(i, rawRealtime, which);
            if (time == 0) {
                continue;
            }
            sb.append("\n    ");
            sb.append(prefix);
            didOne = true;
            sb.append(SCREEN_BRIGHTNESS_NAMES[i]);
            sb.append(" ");
            formatTimeMs(sb, time/1000);
            sb.append("(");
            sb.append(formatRatioLocked(time, screenOnTime));
            sb.append(")");
        }
        if (!didOne) sb.append(" (no activity)");
        pw.println(sb.toString());
        if (powerSaveModeEnabledTime != 0) {
            sb.setLength(0);
            sb.append(prefix);
                    sb.append("  Power save mode enabled: ");
                    formatTimeMs(sb, powerSaveModeEnabledTime / 1000);
                    sb.append("(");
                    sb.append(formatRatioLocked(powerSaveModeEnabledTime, whichBatteryRealtime));
                    sb.append(")");
            pw.println(sb.toString());
        }
        if (deviceLightIdlingTime != 0) {
            sb.setLength(0);
            sb.append(prefix);
                    sb.append("  Device light idling: ");
                    formatTimeMs(sb, deviceLightIdlingTime / 1000);
                    sb.append("(");
                    sb.append(formatRatioLocked(deviceLightIdlingTime, whichBatteryRealtime));
                    sb.append(") "); sb.append(getDeviceIdlingCount(DEVICE_IDLE_MODE_LIGHT, which));
                    sb.append("x");
            pw.println(sb.toString());
        }
        if (deviceIdleModeLightTime != 0) {
            sb.setLength(0);
            sb.append(prefix);
                    sb.append("  Idle mode light time: ");
                    formatTimeMs(sb, deviceIdleModeLightTime / 1000);
                    sb.append("(");
                    sb.append(formatRatioLocked(deviceIdleModeLightTime, whichBatteryRealtime));
                    sb.append(") ");
                    sb.append(getDeviceIdleModeCount(DEVICE_IDLE_MODE_LIGHT, which));
                    sb.append("x");
                    sb.append(" -- longest ");
                    formatTimeMs(sb, getLongestDeviceIdleModeTime(DEVICE_IDLE_MODE_LIGHT));
            pw.println(sb.toString());
        }
        if (deviceIdlingTime != 0) {
            sb.setLength(0);
            sb.append(prefix);
                    sb.append("  Device full idling: ");
                    formatTimeMs(sb, deviceIdlingTime / 1000);
                    sb.append("(");
                    sb.append(formatRatioLocked(deviceIdlingTime, whichBatteryRealtime));
                    sb.append(") "); sb.append(getDeviceIdlingCount(DEVICE_IDLE_MODE_DEEP, which));
                    sb.append("x");
            pw.println(sb.toString());
        }
        if (deviceIdleModeFullTime != 0) {
            sb.setLength(0);
            sb.append(prefix);
                    sb.append("  Idle mode full time: ");
                    formatTimeMs(sb, deviceIdleModeFullTime / 1000);
                    sb.append("(");
                    sb.append(formatRatioLocked(deviceIdleModeFullTime, whichBatteryRealtime));
                    sb.append(") ");
                    sb.append(getDeviceIdleModeCount(DEVICE_IDLE_MODE_DEEP, which));
                    sb.append("x");
                    sb.append(" -- longest ");
                    formatTimeMs(sb, getLongestDeviceIdleModeTime(DEVICE_IDLE_MODE_DEEP));
            pw.println(sb.toString());
        }
        if (phoneOnTime != 0) {
            sb.setLength(0);
            sb.append(prefix);
                    sb.append("  Active phone call: "); formatTimeMs(sb, phoneOnTime / 1000);
                    sb.append("("); sb.append(formatRatioLocked(phoneOnTime, whichBatteryRealtime));
                    sb.append(") "); sb.append(getPhoneOnCount(which)); sb.append("x");
        }
        final int connChanges = getNumConnectivityChange(which);
        if (connChanges != 0) {
            pw.print(prefix);
            pw.print("  Connectivity changes: "); pw.println(connChanges);
        }

        // Calculate wakelock times across all uids.
        long fullWakeLockTimeTotalMicros = 0;
        long partialWakeLockTimeTotalMicros = 0;

        final ArrayList<TimerEntry> timers = new ArrayList<>();

        for (int iu = 0; iu < NU; iu++) {
            final Uid u = uidStats.valueAt(iu);

            final ArrayMap<String, ? extends BatteryStats.Uid.Wakelock> wakelocks
                    = u.getWakelockStats();
            for (int iw=wakelocks.size()-1; iw>=0; iw--) {
                final Uid.Wakelock wl = wakelocks.valueAt(iw);

                final Timer fullWakeTimer = wl.getWakeTime(WAKE_TYPE_FULL);
                if (fullWakeTimer != null) {
                    fullWakeLockTimeTotalMicros += fullWakeTimer.getTotalTimeLocked(
                            rawRealtime, which);
                }

                final Timer partialWakeTimer = wl.getWakeTime(WAKE_TYPE_PARTIAL);
                if (partialWakeTimer != null) {
                    final long totalTimeMicros = partialWakeTimer.getTotalTimeLocked(
                            rawRealtime, which);
                    if (totalTimeMicros > 0) {
                        if (reqUid < 0) {
                            // Only show the ordered list of all wake
                            // locks if the caller is not asking for data
                            // about a specific uid.
                            timers.add(new TimerEntry(wakelocks.keyAt(iw), u.getUid(),
                                    partialWakeTimer, totalTimeMicros));
                        }
                        partialWakeLockTimeTotalMicros += totalTimeMicros;
                    }
                }
            }
        }

        final long mobileRxTotalBytes = getNetworkActivityBytes(NETWORK_MOBILE_RX_DATA, which);
        final long mobileTxTotalBytes = getNetworkActivityBytes(NETWORK_MOBILE_TX_DATA, which);
        final long wifiRxTotalBytes = getNetworkActivityBytes(NETWORK_WIFI_RX_DATA, which);
        final long wifiTxTotalBytes = getNetworkActivityBytes(NETWORK_WIFI_TX_DATA, which);
        final long mobileRxTotalPackets = getNetworkActivityPackets(NETWORK_MOBILE_RX_DATA, which);
        final long mobileTxTotalPackets = getNetworkActivityPackets(NETWORK_MOBILE_TX_DATA, which);
        final long wifiRxTotalPackets = getNetworkActivityPackets(NETWORK_WIFI_RX_DATA, which);
        final long wifiTxTotalPackets = getNetworkActivityPackets(NETWORK_WIFI_TX_DATA, which);
        final long btRxTotalBytes = getNetworkActivityBytes(NETWORK_BT_RX_DATA, which);
        final long btTxTotalBytes = getNetworkActivityBytes(NETWORK_BT_TX_DATA, which);

        if (fullWakeLockTimeTotalMicros != 0) {
            sb.setLength(0);
            sb.append(prefix);
                    sb.append("  Total full wakelock time: "); formatTimeMsNoSpace(sb,
                            (fullWakeLockTimeTotalMicros + 500) / 1000);
            pw.println(sb.toString());
        }

        if (partialWakeLockTimeTotalMicros != 0) {
            sb.setLength(0);
            sb.append(prefix);
                    sb.append("  Total partial wakelock time: "); formatTimeMsNoSpace(sb,
                            (partialWakeLockTimeTotalMicros + 500) / 1000);
            pw.println(sb.toString());
        }

        final long multicastWakeLockTimeTotalMicros =
                getWifiMulticastWakelockTime(rawRealtime, which);
        final int multicastWakeLockCountTotal = getWifiMulticastWakelockCount(which);
        if (multicastWakeLockTimeTotalMicros != 0) {
            sb.setLength(0);
            sb.append(prefix);
            sb.append("  Total WiFi Multicast wakelock Count: ");
            sb.append(multicastWakeLockCountTotal);
            pw.println(sb.toString());

            sb.setLength(0);
            sb.append(prefix);
            sb.append("  Total WiFi Multicast wakelock time: ");
            formatTimeMsNoSpace(sb, (multicastWakeLockTimeTotalMicros + 500) / 1000);
            pw.println(sb.toString());
        }

        pw.println("");
        pw.print(prefix);
        sb.setLength(0);
        sb.append(prefix);
        sb.append("  CONNECTIVITY POWER SUMMARY START");
        pw.println(sb.toString());

        pw.print(prefix);
        sb.setLength(0);
        sb.append(prefix);
        sb.append("  Logging duration for connectivity statistics: ");
        formatTimeMs(sb, whichBatteryRealtime / 1000);
        pw.println(sb.toString());

        sb.setLength(0);
        sb.append(prefix);
        sb.append("  Cellular Statistics:");
        pw.println(sb.toString());

        pw.print(prefix);
        sb.setLength(0);
        sb.append(prefix);
        sb.append("     Cellular kernel active time: ");
        final long mobileActiveTime = getMobileRadioActiveTime(rawRealtime, which);
        formatTimeMs(sb, mobileActiveTime / 1000);
        sb.append("("); sb.append(formatRatioLocked(mobileActiveTime, whichBatteryRealtime));
        sb.append(")");
        pw.println(sb.toString());

        pw.print("     Cellular data received: "); pw.println(formatBytesLocked(mobileRxTotalBytes));
        pw.print("     Cellular data sent: "); pw.println(formatBytesLocked(mobileTxTotalBytes));
        pw.print("     Cellular packets received: "); pw.println(mobileRxTotalPackets);
        pw.print("     Cellular packets sent: "); pw.println(mobileTxTotalPackets);

        sb.setLength(0);
        sb.append(prefix);
        sb.append("     Cellular Radio Access Technology:");
        didOne = false;
        for (int i=0; i<NUM_DATA_CONNECTION_TYPES; i++) {
            final long time = getPhoneDataConnectionTime(i, rawRealtime, which);
            if (time == 0) {
                continue;
            }
            sb.append("\n       ");
            sb.append(prefix);
            didOne = true;
            sb.append(DATA_CONNECTION_NAMES[i]);
            sb.append(" ");
            formatTimeMs(sb, time/1000);
            sb.append("(");
            sb.append(formatRatioLocked(time, whichBatteryRealtime));
            sb.append(") ");
        }
        if (!didOne) sb.append(" (no activity)");
        pw.println(sb.toString());

        sb.setLength(0);
        sb.append(prefix);
        sb.append("     Cellular Rx signal strength (RSRP):");
        final String[] cellularRxSignalStrengthDescription = new String[]{
            "very poor (less than -128dBm): ",
            "poor (-128dBm to -118dBm): ",
            "moderate (-118dBm to -108dBm): ",
            "good (-108dBm to -98dBm): ",
            "great (greater than -98dBm): "};
        didOne = false;
        final int numCellularRxBins = Math.min(SignalStrength.NUM_SIGNAL_STRENGTH_BINS,
            cellularRxSignalStrengthDescription.length);
        for (int i=0; i<numCellularRxBins; i++) {
            final long time = getPhoneSignalStrengthTime(i, rawRealtime, which);
            if (time == 0) {
                continue;
            }
            sb.append("\n       ");
            sb.append(prefix);
            didOne = true;
            sb.append(cellularRxSignalStrengthDescription[i]);
            sb.append(" ");
            formatTimeMs(sb, time/1000);
            sb.append("(");
            sb.append(formatRatioLocked(time, whichBatteryRealtime));
            sb.append(") ");
        }
        if (!didOne) sb.append(" (no activity)");
        pw.println(sb.toString());

        printControllerActivity(pw, sb, prefix, CELLULAR_CONTROLLER_NAME,
            getModemControllerActivity(), which);

        pw.print(prefix);
        sb.setLength(0);
        sb.append(prefix);
        sb.append("  Wifi Statistics:");
        pw.println(sb.toString());

        pw.print(prefix);
        sb.setLength(0);
        sb.append(prefix);
        sb.append("     Wifi kernel active time: ");
        final long wifiActiveTime = getWifiActiveTime(rawRealtime, which);
        formatTimeMs(sb, wifiActiveTime / 1000);
        sb.append("("); sb.append(formatRatioLocked(wifiActiveTime, whichBatteryRealtime));
        sb.append(")");
        pw.println(sb.toString());

        pw.print("     Wifi data received: "); pw.println(formatBytesLocked(wifiRxTotalBytes));
        pw.print("     Wifi data sent: "); pw.println(formatBytesLocked(wifiTxTotalBytes));
        pw.print("     Wifi packets received: "); pw.println(wifiRxTotalPackets);
        pw.print("     Wifi packets sent: "); pw.println(wifiTxTotalPackets);

        sb.setLength(0);
        sb.append(prefix);
        sb.append("     Wifi states:");
        didOne = false;
        for (int i=0; i<NUM_WIFI_STATES; i++) {
            final long time = getWifiStateTime(i, rawRealtime, which);
            if (time == 0) {
                continue;
            }
            sb.append("\n       ");
            didOne = true;
            sb.append(WIFI_STATE_NAMES[i]);
            sb.append(" ");
            formatTimeMs(sb, time/1000);
            sb.append("(");
            sb.append(formatRatioLocked(time, whichBatteryRealtime));
            sb.append(") ");
        }
        if (!didOne) sb.append(" (no activity)");
        pw.println(sb.toString());

        sb.setLength(0);
        sb.append(prefix);
        sb.append("     Wifi supplicant states:");
        didOne = false;
        for (int i=0; i<NUM_WIFI_SUPPL_STATES; i++) {
            final long time = getWifiSupplStateTime(i, rawRealtime, which);
            if (time == 0) {
                continue;
            }
            sb.append("\n       ");
            didOne = true;
            sb.append(WIFI_SUPPL_STATE_NAMES[i]);
            sb.append(" ");
            formatTimeMs(sb, time/1000);
            sb.append("(");
            sb.append(formatRatioLocked(time, whichBatteryRealtime));
            sb.append(") ");
        }
        if (!didOne) sb.append(" (no activity)");
        pw.println(sb.toString());

        sb.setLength(0);
        sb.append(prefix);
        sb.append("     Wifi Rx signal strength (RSSI):");
        final String[] wifiRxSignalStrengthDescription = new String[]{
            "very poor (less than -88.75dBm): ",
            "poor (-88.75 to -77.5dBm): ",
            "moderate (-77.5dBm to -66.25dBm): ",
            "good (-66.25dBm to -55dBm): ",
            "great (greater than -55dBm): "};
        didOne = false;
        final int numWifiRxBins = Math.min(NUM_WIFI_SIGNAL_STRENGTH_BINS,
            wifiRxSignalStrengthDescription.length);
        for (int i=0; i<numWifiRxBins; i++) {
            final long time = getWifiSignalStrengthTime(i, rawRealtime, which);
            if (time == 0) {
                continue;
            }
            sb.append("\n    ");
            sb.append(prefix);
            didOne = true;
            sb.append("     ");
            sb.append(wifiRxSignalStrengthDescription[i]);
            formatTimeMs(sb, time/1000);
            sb.append("(");
            sb.append(formatRatioLocked(time, whichBatteryRealtime));
            sb.append(") ");
        }
        if (!didOne) sb.append(" (no activity)");
        pw.println(sb.toString());

        printControllerActivity(pw, sb, prefix, WIFI_CONTROLLER_NAME,
            getWifiControllerActivity(), which);

        pw.print(prefix);
        sb.setLength(0);
        sb.append(prefix);
        sb.append("  GPS Statistics:");
        pw.println(sb.toString());

        sb.setLength(0);
        sb.append(prefix);
        sb.append("     GPS signal quality (Top 4 Average CN0):");
        final String[] gpsSignalQualityDescription = new String[]{
            "poor (less than 20 dBHz): ",
            "good (greater than 20 dBHz): "};
        final int numGpsSignalQualityBins = Math.min(GnssMetrics.NUM_GPS_SIGNAL_QUALITY_LEVELS,
            gpsSignalQualityDescription.length);
        for (int i=0; i<numGpsSignalQualityBins; i++) {
            final long time = getGpsSignalQualityTime(i, rawRealtime, which);
            sb.append("\n    ");
            sb.append(prefix);
            sb.append("  ");
            sb.append(gpsSignalQualityDescription[i]);
            formatTimeMs(sb, time/1000);
            sb.append("(");
            sb.append(formatRatioLocked(time, whichBatteryRealtime));
            sb.append(") ");
        }
        pw.println(sb.toString());

        final long gpsBatteryDrainMaMs = getGpsBatteryDrainMaMs();
        if (gpsBatteryDrainMaMs > 0) {
            pw.print(prefix);
            sb.setLength(0);
            sb.append(prefix);
            sb.append("     Battery Drain (mAh): ");
            sb.append(Double.toString(((double) gpsBatteryDrainMaMs)/(3600 * 1000)));
            pw.println(sb.toString());
        }

        pw.print(prefix);
        sb.setLength(0);
        sb.append(prefix);
        sb.append("  CONNECTIVITY POWER SUMMARY END");
        pw.println(sb.toString());
        pw.println("");

        pw.print(prefix);
        pw.print("  Bluetooth total received: "); pw.print(formatBytesLocked(btRxTotalBytes));
        pw.print(", sent: "); pw.println(formatBytesLocked(btTxTotalBytes));

        final long bluetoothScanTimeMs = getBluetoothScanTime(rawRealtime, which) / 1000;
        sb.setLength(0);
        sb.append(prefix);
        sb.append("  Bluetooth scan time: "); formatTimeMs(sb, bluetoothScanTimeMs);
        pw.println(sb.toString());

        printControllerActivity(pw, sb, prefix, "Bluetooth", getBluetoothControllerActivity(),
                which);

        pw.println();

        if (which == STATS_SINCE_UNPLUGGED) {
            if (getIsOnBattery()) {
                pw.print(prefix); pw.println("  Device is currently unplugged");
                pw.print(prefix); pw.print("    Discharge cycle start level: ");
                        pw.println(getDischargeStartLevel());
                pw.print(prefix); pw.print("    Discharge cycle current level: ");
                        pw.println(getDischargeCurrentLevel());
            } else {
                pw.print(prefix); pw.println("  Device is currently plugged into power");
                pw.print(prefix); pw.print("    Last discharge cycle start level: ");
                        pw.println(getDischargeStartLevel());
                pw.print(prefix); pw.print("    Last discharge cycle end level: ");
                        pw.println(getDischargeCurrentLevel());
            }
            pw.print(prefix); pw.print("    Amount discharged while screen on: ");
            pw.println(getDischargeAmountScreenOn());
            pw.print(prefix); pw.print("    Amount discharged while screen off: ");
            pw.println(getDischargeAmountScreenOff());
            pw.print(prefix); pw.print("    Amount discharged while screen doze: ");
            pw.println(getDischargeAmountScreenDoze());
            pw.println(" ");
        } else {
            pw.print(prefix); pw.println("  Device battery use since last full charge");
            pw.print(prefix); pw.print("    Amount discharged (lower bound): ");
            pw.println(getLowDischargeAmountSinceCharge());
            pw.print(prefix); pw.print("    Amount discharged (upper bound): ");
            pw.println(getHighDischargeAmountSinceCharge());
            pw.print(prefix); pw.print("    Amount discharged while screen on: ");
            pw.println(getDischargeAmountScreenOnSinceCharge());
            pw.print(prefix); pw.print("    Amount discharged while screen off: ");
            pw.println(getDischargeAmountScreenOffSinceCharge());
            pw.print(prefix); pw.print("    Amount discharged while screen doze: ");
            pw.println(getDischargeAmountScreenDozeSinceCharge());
            pw.println();
        }

        final BatteryStatsHelper helper = new BatteryStatsHelper(context, false, wifiOnly);
        helper.create(this);
        helper.refreshStats(which, UserHandle.USER_ALL);
        List<BatterySipper> sippers = helper.getUsageList();
        if (sippers != null && sippers.size() > 0) {
            pw.print(prefix); pw.println("  Estimated power use (mAh):");
            pw.print(prefix); pw.print("    Capacity: ");
                    printmAh(pw, helper.getPowerProfile().getBatteryCapacity());
                    pw.print(", Computed drain: "); printmAh(pw, helper.getComputedPower());
                    pw.print(", actual drain: "); printmAh(pw, helper.getMinDrainedPower());
                    if (helper.getMinDrainedPower() != helper.getMaxDrainedPower()) {
                        pw.print("-"); printmAh(pw, helper.getMaxDrainedPower());
                    }
                    pw.println();
            for (int i=0; i<sippers.size(); i++) {
                final BatterySipper bs = sippers.get(i);
                pw.print(prefix);
                switch (bs.drainType) {
                    case AMBIENT_DISPLAY:
                        pw.print("    Ambient display: ");
                        break;
                    case IDLE:
                        pw.print("    Idle: ");
                        break;
                    case CELL:
                        pw.print("    Cell standby: ");
                        break;
                    case PHONE:
                        pw.print("    Phone calls: ");
                        break;
                    case WIFI:
                        pw.print("    Wifi: ");
                        break;
                    case BLUETOOTH:
                        pw.print("    Bluetooth: ");
                        break;
                    case SCREEN:
                        pw.print("    Screen: ");
                        break;
                    case FLASHLIGHT:
                        pw.print("    Flashlight: ");
                        break;
                    case APP:
                        pw.print("    Uid ");
                        UserHandle.formatUid(pw, bs.uidObj.getUid());
                        pw.print(": ");
                        break;
                    case USER:
                        pw.print("    User "); pw.print(bs.userId);
                        pw.print(": ");
                        break;
                    case UNACCOUNTED:
                        pw.print("    Unaccounted: ");
                        break;
                    case OVERCOUNTED:
                        pw.print("    Over-counted: ");
                        break;
                    case CAMERA:
                        pw.print("    Camera: ");
                        break;
                    default:
                        pw.print("    ???: ");
                        break;
                }
                printmAh(pw, bs.totalPowerMah);

                if (bs.usagePowerMah != bs.totalPowerMah) {
                    // If the usage (generic power) isn't the whole amount, we list out
                    // what components are involved in the calculation.

                    pw.print(" (");
                    if (bs.usagePowerMah != 0) {
                        pw.print(" usage=");
                        printmAh(pw, bs.usagePowerMah);
                    }
                    if (bs.cpuPowerMah != 0) {
                        pw.print(" cpu=");
                        printmAh(pw, bs.cpuPowerMah);
                    }
                    if (bs.wakeLockPowerMah != 0) {
                        pw.print(" wake=");
                        printmAh(pw, bs.wakeLockPowerMah);
                    }
                    if (bs.mobileRadioPowerMah != 0) {
                        pw.print(" radio=");
                        printmAh(pw, bs.mobileRadioPowerMah);
                    }
                    if (bs.wifiPowerMah != 0) {
                        pw.print(" wifi=");
                        printmAh(pw, bs.wifiPowerMah);
                    }
                    if (bs.bluetoothPowerMah != 0) {
                        pw.print(" bt=");
                        printmAh(pw, bs.bluetoothPowerMah);
                    }
                    if (bs.gpsPowerMah != 0) {
                        pw.print(" gps=");
                        printmAh(pw, bs.gpsPowerMah);
                    }
                    if (bs.sensorPowerMah != 0) {
                        pw.print(" sensor=");
                        printmAh(pw, bs.sensorPowerMah);
                    }
                    if (bs.cameraPowerMah != 0) {
                        pw.print(" camera=");
                        printmAh(pw, bs.cameraPowerMah);
                    }
                    if (bs.flashlightPowerMah != 0) {
                        pw.print(" flash=");
                        printmAh(pw, bs.flashlightPowerMah);
                    }
                    pw.print(" )");
                }

                // If there is additional smearing information, include it.
                if (bs.totalSmearedPowerMah != bs.totalPowerMah) {
                    pw.print(" Including smearing: ");
                    printmAh(pw, bs.totalSmearedPowerMah);
                    pw.print(" (");
                    if (bs.screenPowerMah != 0) {
                        pw.print(" screen=");
                        printmAh(pw, bs.screenPowerMah);
                    }
                    if (bs.proportionalSmearMah != 0) {
                        pw.print(" proportional=");
                        printmAh(pw, bs.proportionalSmearMah);
                    }
                    pw.print(" )");
                }
                if (bs.shouldHide) {
                    pw.print(" Excluded from smearing");
                }

                pw.println();
            }
            pw.println();
        }

        sippers = helper.getMobilemsppList();
        if (sippers != null && sippers.size() > 0) {
            pw.print(prefix); pw.println("  Per-app mobile ms per packet:");
            long totalTime = 0;
            for (int i=0; i<sippers.size(); i++) {
                final BatterySipper bs = sippers.get(i);
                sb.setLength(0);
                sb.append(prefix); sb.append("    Uid ");
                UserHandle.formatUid(sb, bs.uidObj.getUid());
                sb.append(": "); sb.append(BatteryStatsHelper.makemAh(bs.mobilemspp));
                sb.append(" ("); sb.append(bs.mobileRxPackets+bs.mobileTxPackets);
                sb.append(" packets over "); formatTimeMsNoSpace(sb, bs.mobileActive);
                sb.append(") "); sb.append(bs.mobileActiveCount); sb.append("x");
                pw.println(sb.toString());
                totalTime += bs.mobileActive;
            }
            sb.setLength(0);
            sb.append(prefix);
            sb.append("    TOTAL TIME: ");
            formatTimeMs(sb, totalTime);
            sb.append("("); sb.append(formatRatioLocked(totalTime, whichBatteryRealtime));
            sb.append(")");
            pw.println(sb.toString());
            pw.println();
        }

        final Comparator<TimerEntry> timerComparator = new Comparator<TimerEntry>() {
            @Override
            public int compare(TimerEntry lhs, TimerEntry rhs) {
                long lhsTime = lhs.mTime;
                long rhsTime = rhs.mTime;
                if (lhsTime < rhsTime) {
                    return 1;
                }
                if (lhsTime > rhsTime) {
                    return -1;
                }
                return 0;
            }
        };

        if (reqUid < 0) {
            final Map<String, ? extends BatteryStats.Timer> kernelWakelocks
                    = getKernelWakelockStats();
            if (kernelWakelocks.size() > 0) {
                final ArrayList<TimerEntry> ktimers = new ArrayList<>();
                for (Map.Entry<String, ? extends BatteryStats.Timer> ent
                        : kernelWakelocks.entrySet()) {
                    final BatteryStats.Timer timer = ent.getValue();
                    final long totalTimeMillis = computeWakeLock(timer, rawRealtime, which);
                    if (totalTimeMillis > 0) {
                        ktimers.add(new TimerEntry(ent.getKey(), 0, timer, totalTimeMillis));
                    }
                }
                if (ktimers.size() > 0) {
                    Collections.sort(ktimers, timerComparator);
                    pw.print(prefix); pw.println("  All kernel wake locks:");
                    for (int i=0; i<ktimers.size(); i++) {
                        final TimerEntry timer = ktimers.get(i);
                        String linePrefix = ": ";
                        sb.setLength(0);
                        sb.append(prefix);
                        sb.append("  Kernel Wake lock ");
                        sb.append(timer.mName);
                        linePrefix = printWakeLock(sb, timer.mTimer, rawRealtime, null,
                                which, linePrefix);
                        if (!linePrefix.equals(": ")) {
                            sb.append(" realtime");
                            // Only print out wake locks that were held
                            pw.println(sb.toString());
                        }
                    }
                    pw.println();
                }
            }

            if (timers.size() > 0) {
                Collections.sort(timers, timerComparator);
                pw.print(prefix); pw.println("  All partial wake locks:");
                for (int i=0; i<timers.size(); i++) {
                    TimerEntry timer = timers.get(i);
                    sb.setLength(0);
                    sb.append("  Wake lock ");
                    UserHandle.formatUid(sb, timer.mId);
                    sb.append(" ");
                    sb.append(timer.mName);
                    printWakeLock(sb, timer.mTimer, rawRealtime, null, which, ": ");
                    sb.append(" realtime");
                    pw.println(sb.toString());
                }
                timers.clear();
                pw.println();
            }

            final Map<String, ? extends Timer> wakeupReasons = getWakeupReasonStats();
            if (wakeupReasons.size() > 0) {
                pw.print(prefix); pw.println("  All wakeup reasons:");
                final ArrayList<TimerEntry> reasons = new ArrayList<>();
                for (Map.Entry<String, ? extends Timer> ent : wakeupReasons.entrySet()) {
                    final Timer timer = ent.getValue();
                    reasons.add(new TimerEntry(ent.getKey(), 0, timer,
                            timer.getCountLocked(which)));
                }
                Collections.sort(reasons, timerComparator);
                for (int i=0; i<reasons.size(); i++) {
                    TimerEntry timer = reasons.get(i);
                    String linePrefix = ": ";
                    sb.setLength(0);
                    sb.append(prefix);
                    sb.append("  Wakeup reason ");
                    sb.append(timer.mName);
                    printWakeLock(sb, timer.mTimer, rawRealtime, null, which, ": ");
                    sb.append(" realtime");
                    pw.println(sb.toString());
                }
                pw.println();
            }
        }

        final LongSparseArray<? extends Timer> mMemoryStats = getKernelMemoryStats();
        if (mMemoryStats.size() > 0) {
            pw.println("  Memory Stats");
            for (int i = 0; i < mMemoryStats.size(); i++) {
                sb.setLength(0);
                sb.append("  Bandwidth ");
                sb.append(mMemoryStats.keyAt(i));
                sb.append(" Time ");
                sb.append(mMemoryStats.valueAt(i).getTotalTimeLocked(rawRealtime, which));
                pw.println(sb.toString());
            }
            pw.println();
        }

        final Map<String, ? extends Timer> rpmStats = getRpmStats();
        if (rpmStats.size() > 0) {
            pw.print(prefix); pw.println("  Resource Power Manager Stats");
            if (rpmStats.size() > 0) {
                for (Map.Entry<String, ? extends Timer> ent : rpmStats.entrySet()) {
                    final String timerName = ent.getKey();
                    final Timer timer = ent.getValue();
                    printTimer(pw, sb, timer, rawRealtime, which, prefix, timerName);
                }
            }
            pw.println();
        }
        if (SCREEN_OFF_RPM_STATS_ENABLED) {
            final Map<String, ? extends Timer> screenOffRpmStats = getScreenOffRpmStats();
            if (screenOffRpmStats.size() > 0) {
                pw.print(prefix);
                pw.println("  Resource Power Manager Stats for when screen was off");
                if (screenOffRpmStats.size() > 0) {
                    for (Map.Entry<String, ? extends Timer> ent : screenOffRpmStats.entrySet()) {
                        final String timerName = ent.getKey();
                        final Timer timer = ent.getValue();
                        printTimer(pw, sb, timer, rawRealtime, which, prefix, timerName);
                    }
                }
                pw.println();
            }
        }

        final long[] cpuFreqs = getCpuFreqs();
        if (cpuFreqs != null) {
            sb.setLength(0);
            sb.append("  CPU freqs:");
            for (int i = 0; i < cpuFreqs.length; ++i) {
                sb.append(" " + cpuFreqs[i]);
            }
            pw.println(sb.toString());
            pw.println();
        }

        for (int iu=0; iu<NU; iu++) {
            final int uid = uidStats.keyAt(iu);
            if (reqUid >= 0 && uid != reqUid && uid != Process.SYSTEM_UID) {
                continue;
            }

            final Uid u = uidStats.valueAt(iu);

            pw.print(prefix);
            pw.print("  ");
            UserHandle.formatUid(pw, uid);
            pw.println(":");
            boolean uidActivity = false;

            final long mobileRxBytes = u.getNetworkActivityBytes(NETWORK_MOBILE_RX_DATA, which);
            final long mobileTxBytes = u.getNetworkActivityBytes(NETWORK_MOBILE_TX_DATA, which);
            final long wifiRxBytes = u.getNetworkActivityBytes(NETWORK_WIFI_RX_DATA, which);
            final long wifiTxBytes = u.getNetworkActivityBytes(NETWORK_WIFI_TX_DATA, which);
            final long btRxBytes = u.getNetworkActivityBytes(NETWORK_BT_RX_DATA, which);
            final long btTxBytes = u.getNetworkActivityBytes(NETWORK_BT_TX_DATA, which);

            final long mobileRxPackets = u.getNetworkActivityPackets(NETWORK_MOBILE_RX_DATA, which);
            final long mobileTxPackets = u.getNetworkActivityPackets(NETWORK_MOBILE_TX_DATA, which);
            final long wifiRxPackets = u.getNetworkActivityPackets(NETWORK_WIFI_RX_DATA, which);
            final long wifiTxPackets = u.getNetworkActivityPackets(NETWORK_WIFI_TX_DATA, which);

            final long uidMobileActiveTime = u.getMobileRadioActiveTime(which);
            final int uidMobileActiveCount = u.getMobileRadioActiveCount(which);

            final long fullWifiLockOnTime = u.getFullWifiLockTime(rawRealtime, which);
            final long wifiScanTime = u.getWifiScanTime(rawRealtime, which);
            final int wifiScanCount = u.getWifiScanCount(which);
            final int wifiScanCountBg = u.getWifiScanBackgroundCount(which);
            // 'actualTime' are unpooled and always since reset (regardless of 'which')
            final long wifiScanActualTime = u.getWifiScanActualTime(rawRealtime);
            final long wifiScanActualTimeBg = u.getWifiScanBackgroundTime(rawRealtime);
            final long uidWifiRunningTime = u.getWifiRunningTime(rawRealtime, which);

            final long mobileWakeup = u.getMobileRadioApWakeupCount(which);
            final long wifiWakeup = u.getWifiRadioApWakeupCount(which);

            if (mobileRxBytes > 0 || mobileTxBytes > 0
                    || mobileRxPackets > 0 || mobileTxPackets > 0) {
                pw.print(prefix); pw.print("    Mobile network: ");
                        pw.print(formatBytesLocked(mobileRxBytes)); pw.print(" received, ");
                        pw.print(formatBytesLocked(mobileTxBytes));
                        pw.print(" sent (packets "); pw.print(mobileRxPackets);
                        pw.print(" received, "); pw.print(mobileTxPackets); pw.println(" sent)");
            }
            if (uidMobileActiveTime > 0 || uidMobileActiveCount > 0) {
                sb.setLength(0);
                sb.append(prefix); sb.append("    Mobile radio active: ");
                formatTimeMs(sb, uidMobileActiveTime / 1000);
                sb.append("(");
                sb.append(formatRatioLocked(uidMobileActiveTime, mobileActiveTime));
                sb.append(") "); sb.append(uidMobileActiveCount); sb.append("x");
                long packets = mobileRxPackets + mobileTxPackets;
                if (packets == 0) {
                    packets = 1;
                }
                sb.append(" @ ");
                sb.append(BatteryStatsHelper.makemAh(uidMobileActiveTime / 1000 / (double)packets));
                sb.append(" mspp");
                pw.println(sb.toString());
            }

            if (mobileWakeup > 0) {
                sb.setLength(0);
                sb.append(prefix);
                sb.append("    Mobile radio AP wakeups: ");
                sb.append(mobileWakeup);
                pw.println(sb.toString());
            }

            printControllerActivityIfInteresting(pw, sb, prefix + "  ",
                CELLULAR_CONTROLLER_NAME, u.getModemControllerActivity(), which);

            if (wifiRxBytes > 0 || wifiTxBytes > 0 || wifiRxPackets > 0 || wifiTxPackets > 0) {
                pw.print(prefix); pw.print("    Wi-Fi network: ");
                        pw.print(formatBytesLocked(wifiRxBytes)); pw.print(" received, ");
                        pw.print(formatBytesLocked(wifiTxBytes));
                        pw.print(" sent (packets "); pw.print(wifiRxPackets);
                        pw.print(" received, "); pw.print(wifiTxPackets); pw.println(" sent)");
            }

            if (fullWifiLockOnTime != 0 || wifiScanTime != 0 || wifiScanCount != 0
                    || wifiScanCountBg != 0 || wifiScanActualTime != 0 || wifiScanActualTimeBg != 0
                    || uidWifiRunningTime != 0) {
                sb.setLength(0);
                sb.append(prefix); sb.append("    Wifi Running: ");
                        formatTimeMs(sb, uidWifiRunningTime / 1000);
                        sb.append("("); sb.append(formatRatioLocked(uidWifiRunningTime,
                                whichBatteryRealtime)); sb.append(")\n");
                sb.append(prefix); sb.append("    Full Wifi Lock: ");
                        formatTimeMs(sb, fullWifiLockOnTime / 1000);
                        sb.append("("); sb.append(formatRatioLocked(fullWifiLockOnTime,
                                whichBatteryRealtime)); sb.append(")\n");
                sb.append(prefix); sb.append("    Wifi Scan (blamed): ");
                        formatTimeMs(sb, wifiScanTime / 1000);
                        sb.append("("); sb.append(formatRatioLocked(wifiScanTime,
                                whichBatteryRealtime)); sb.append(") ");
                                sb.append(wifiScanCount);
                                sb.append("x\n");
                // actual and background times are unpooled and since reset (regardless of 'which')
                sb.append(prefix); sb.append("    Wifi Scan (actual): ");
                        formatTimeMs(sb, wifiScanActualTime / 1000);
                        sb.append("("); sb.append(formatRatioLocked(wifiScanActualTime,
                                computeBatteryRealtime(rawRealtime, STATS_SINCE_CHARGED)));
                                sb.append(") ");
                                sb.append(wifiScanCount);
                                sb.append("x\n");
                sb.append(prefix); sb.append("    Background Wifi Scan: ");
                        formatTimeMs(sb, wifiScanActualTimeBg / 1000);
                        sb.append("("); sb.append(formatRatioLocked(wifiScanActualTimeBg,
                                computeBatteryRealtime(rawRealtime, STATS_SINCE_CHARGED)));
                                sb.append(") ");
                                sb.append(wifiScanCountBg);
                                sb.append("x");
                pw.println(sb.toString());
            }

            if (wifiWakeup > 0) {
                sb.setLength(0);
                sb.append(prefix);
                sb.append("    WiFi AP wakeups: ");
                sb.append(wifiWakeup);
                pw.println(sb.toString());
            }

            printControllerActivityIfInteresting(pw, sb, prefix + "  ", WIFI_CONTROLLER_NAME,
                    u.getWifiControllerActivity(), which);

            if (btRxBytes > 0 || btTxBytes > 0) {
                pw.print(prefix); pw.print("    Bluetooth network: ");
                pw.print(formatBytesLocked(btRxBytes)); pw.print(" received, ");
                pw.print(formatBytesLocked(btTxBytes));
                pw.println(" sent");
            }

            final Timer bleTimer = u.getBluetoothScanTimer();
            if (bleTimer != null) {
                // Convert from microseconds to milliseconds with rounding
                final long totalTimeMs = (bleTimer.getTotalTimeLocked(rawRealtime, which) + 500)
                        / 1000;
                if (totalTimeMs != 0) {
                    final int count = bleTimer.getCountLocked(which);
                    final Timer bleTimerBg = u.getBluetoothScanBackgroundTimer();
                    final int countBg = bleTimerBg != null ? bleTimerBg.getCountLocked(which) : 0;
                    // 'actualTime' are unpooled and always since reset (regardless of 'which')
                    final long actualTimeMs = bleTimer.getTotalDurationMsLocked(rawRealtimeMs);
                    final long actualTimeMsBg = bleTimerBg != null ?
                            bleTimerBg.getTotalDurationMsLocked(rawRealtimeMs) : 0;
                    // Result counters
                    final int resultCount = u.getBluetoothScanResultCounter() != null ?
                            u.getBluetoothScanResultCounter().getCountLocked(which) : 0;
                    final int resultCountBg = u.getBluetoothScanResultBgCounter() != null ?
                            u.getBluetoothScanResultBgCounter().getCountLocked(which) : 0;
                    // Unoptimized scan timer. Unpooled and since reset (regardless of 'which').
                    final Timer unoptimizedScanTimer = u.getBluetoothUnoptimizedScanTimer();
                    final long unoptimizedScanTotalTime = unoptimizedScanTimer != null ?
                            unoptimizedScanTimer.getTotalDurationMsLocked(rawRealtimeMs) : 0;
                    final long unoptimizedScanMaxTime = unoptimizedScanTimer != null ?
                            unoptimizedScanTimer.getMaxDurationMsLocked(rawRealtimeMs) : 0;
                    // Unoptimized bg scan timer. Unpooled and since reset (regardless of 'which').
                    final Timer unoptimizedScanTimerBg =
                            u.getBluetoothUnoptimizedScanBackgroundTimer();
                    final long unoptimizedScanTotalTimeBg = unoptimizedScanTimerBg != null ?
                            unoptimizedScanTimerBg.getTotalDurationMsLocked(rawRealtimeMs) : 0;
                    final long unoptimizedScanMaxTimeBg = unoptimizedScanTimerBg != null ?
                            unoptimizedScanTimerBg.getMaxDurationMsLocked(rawRealtimeMs) : 0;

                    sb.setLength(0);
                    if (actualTimeMs != totalTimeMs) {
                        sb.append(prefix);
                        sb.append("    Bluetooth Scan (total blamed realtime): ");
                        formatTimeMs(sb, totalTimeMs);
                        sb.append(" (");
                        sb.append(count);
                        sb.append(" times)");
                        if (bleTimer.isRunningLocked()) {
                            sb.append(" (currently running)");
                        }
                        sb.append("\n");
                    }

                    sb.append(prefix);
                    sb.append("    Bluetooth Scan (total actual realtime): ");
                    formatTimeMs(sb, actualTimeMs); // since reset, ignores 'which'
                    sb.append(" (");
                    sb.append(count);
                    sb.append(" times)");
                    if (bleTimer.isRunningLocked()) {
                            sb.append(" (currently running)");
                    }
                    sb.append("\n");
                    if (actualTimeMsBg > 0 || countBg > 0) {
                        sb.append(prefix);
                        sb.append("    Bluetooth Scan (background realtime): ");
                        formatTimeMs(sb, actualTimeMsBg); // since reset, ignores 'which'
                        sb.append(" (");
                        sb.append(countBg);
                        sb.append(" times)");
                        if (bleTimerBg != null && bleTimerBg.isRunningLocked()) {
                            sb.append(" (currently running in background)");
                        }
                        sb.append("\n");
                    }

                    sb.append(prefix);
                    sb.append("    Bluetooth Scan Results: ");
                    sb.append(resultCount);
                    sb.append(" (");
                    sb.append(resultCountBg);
                    sb.append(" in background)");

                    if (unoptimizedScanTotalTime > 0 || unoptimizedScanTotalTimeBg > 0) {
                        sb.append("\n");
                        sb.append(prefix);
                        sb.append("    Unoptimized Bluetooth Scan (realtime): ");
                        formatTimeMs(sb, unoptimizedScanTotalTime); // since reset, ignores 'which'
                        sb.append(" (max ");
                        formatTimeMs(sb, unoptimizedScanMaxTime); // since reset, ignores 'which'
                        sb.append(")");
                        if (unoptimizedScanTimer != null
                                && unoptimizedScanTimer.isRunningLocked()) {
                            sb.append(" (currently running unoptimized)");
                        }
                        if (unoptimizedScanTimerBg != null && unoptimizedScanTotalTimeBg > 0) {
                            sb.append("\n");
                            sb.append(prefix);
                            sb.append("    Unoptimized Bluetooth Scan (background realtime): ");
                            formatTimeMs(sb, unoptimizedScanTotalTimeBg); // since reset
                            sb.append(" (max ");
                            formatTimeMs(sb, unoptimizedScanMaxTimeBg); // since reset
                            sb.append(")");
                            if (unoptimizedScanTimerBg.isRunningLocked()) {
                                sb.append(" (currently running unoptimized in background)");
                            }
                        }
                    }
                    pw.println(sb.toString());
                    uidActivity = true;
                }
            }



            if (u.hasUserActivity()) {
                boolean hasData = false;
                for (int i=0; i<Uid.NUM_USER_ACTIVITY_TYPES; i++) {
                    final int val = u.getUserActivityCount(i, which);
                    if (val != 0) {
                        if (!hasData) {
                            sb.setLength(0);
                            sb.append("    User activity: ");
                            hasData = true;
                        } else {
                            sb.append(", ");
                        }
                        sb.append(val);
                        sb.append(" ");
                        sb.append(Uid.USER_ACTIVITY_TYPES[i]);
                    }
                }
                if (hasData) {
                    pw.println(sb.toString());
                }
            }

            final ArrayMap<String, ? extends BatteryStats.Uid.Wakelock> wakelocks
                    = u.getWakelockStats();
            long totalFullWakelock = 0, totalPartialWakelock = 0, totalWindowWakelock = 0;
            long totalDrawWakelock = 0;
            int countWakelock = 0;
            for (int iw=wakelocks.size()-1; iw>=0; iw--) {
                final Uid.Wakelock wl = wakelocks.valueAt(iw);
                String linePrefix = ": ";
                sb.setLength(0);
                sb.append(prefix);
                sb.append("    Wake lock ");
                sb.append(wakelocks.keyAt(iw));
                linePrefix = printWakeLock(sb, wl.getWakeTime(WAKE_TYPE_FULL), rawRealtime,
                        "full", which, linePrefix);
                final Timer pTimer = wl.getWakeTime(WAKE_TYPE_PARTIAL);
                linePrefix = printWakeLock(sb, pTimer, rawRealtime,
                        "partial", which, linePrefix);
                linePrefix = printWakeLock(sb, pTimer != null ? pTimer.getSubTimer() : null,
                        rawRealtime, "background partial", which, linePrefix);
                linePrefix = printWakeLock(sb, wl.getWakeTime(WAKE_TYPE_WINDOW), rawRealtime,
                        "window", which, linePrefix);
                linePrefix = printWakeLock(sb, wl.getWakeTime(WAKE_TYPE_DRAW), rawRealtime,
                        "draw", which, linePrefix);
                sb.append(" realtime");
                pw.println(sb.toString());
                uidActivity = true;
                countWakelock++;

                totalFullWakelock += computeWakeLock(wl.getWakeTime(WAKE_TYPE_FULL),
                        rawRealtime, which);
                totalPartialWakelock += computeWakeLock(wl.getWakeTime(WAKE_TYPE_PARTIAL),
                        rawRealtime, which);
                totalWindowWakelock += computeWakeLock(wl.getWakeTime(WAKE_TYPE_WINDOW),
                        rawRealtime, which);
                totalDrawWakelock += computeWakeLock(wl.getWakeTime(WAKE_TYPE_DRAW),
                        rawRealtime, which);
            }
            if (countWakelock > 1) {
                // get unpooled partial wakelock quantities (unlike totalPartialWakelock, which is
                // pooled and therefore just a lower bound)
                long actualTotalPartialWakelock = 0;
                long actualBgPartialWakelock = 0;
                if (u.getAggregatedPartialWakelockTimer() != null) {
                    final Timer aggTimer = u.getAggregatedPartialWakelockTimer();
                    // Convert from microseconds to milliseconds with rounding
                    actualTotalPartialWakelock =
                            aggTimer.getTotalDurationMsLocked(rawRealtimeMs);
                    final Timer bgAggTimer = aggTimer.getSubTimer();
                    actualBgPartialWakelock = bgAggTimer != null ?
                            bgAggTimer.getTotalDurationMsLocked(rawRealtimeMs) : 0;
                }

                if (actualTotalPartialWakelock != 0 || actualBgPartialWakelock != 0 ||
                        totalFullWakelock != 0 || totalPartialWakelock != 0 ||
                        totalWindowWakelock != 0) {
                    sb.setLength(0);
                    sb.append(prefix);
                    sb.append("    TOTAL wake: ");
                    boolean needComma = false;
                    if (totalFullWakelock != 0) {
                        needComma = true;
                        formatTimeMs(sb, totalFullWakelock);
                        sb.append("full");
                    }
                    if (totalPartialWakelock != 0) {
                        if (needComma) {
                            sb.append(", ");
                        }
                        needComma = true;
                        formatTimeMs(sb, totalPartialWakelock);
                        sb.append("blamed partial");
                    }
                    if (actualTotalPartialWakelock != 0) {
                        if (needComma) {
                            sb.append(", ");
                        }
                        needComma = true;
                        formatTimeMs(sb, actualTotalPartialWakelock);
                        sb.append("actual partial");
                    }
                    if (actualBgPartialWakelock != 0) {
                        if (needComma) {
                            sb.append(", ");
                        }
                        needComma = true;
                        formatTimeMs(sb, actualBgPartialWakelock);
                        sb.append("actual background partial");
                    }
                    if (totalWindowWakelock != 0) {
                        if (needComma) {
                            sb.append(", ");
                        }
                        needComma = true;
                        formatTimeMs(sb, totalWindowWakelock);
                        sb.append("window");
                    }
                    if (totalDrawWakelock != 0) {
                        if (needComma) {
                            sb.append(",");
                        }
                        needComma = true;
                        formatTimeMs(sb, totalDrawWakelock);
                        sb.append("draw");
                    }
                    sb.append(" realtime");
                    pw.println(sb.toString());
                }
            }

            // Calculate multicast wakelock stats
            final Timer mcTimer = u.getMulticastWakelockStats();
            if (mcTimer != null) {
                final long multicastWakeLockTimeMicros = mcTimer.getTotalTimeLocked(rawRealtime, which);
                final int multicastWakeLockCount = mcTimer.getCountLocked(which);

                if (multicastWakeLockTimeMicros > 0) {
                    sb.setLength(0);
                    sb.append(prefix);
                    sb.append("    WiFi Multicast Wakelock");
                    sb.append(" count = ");
                    sb.append(multicastWakeLockCount);
                    sb.append(" time = ");
                    formatTimeMsNoSpace(sb, (multicastWakeLockTimeMicros + 500) / 1000);
                    pw.println(sb.toString());
                }
            }

            final ArrayMap<String, ? extends Timer> syncs = u.getSyncStats();
            for (int isy=syncs.size()-1; isy>=0; isy--) {
                final Timer timer = syncs.valueAt(isy);
                // Convert from microseconds to milliseconds with rounding
                final long totalTime = (timer.getTotalTimeLocked(rawRealtime, which) + 500) / 1000;
                final int count = timer.getCountLocked(which);
                final Timer bgTimer = timer.getSubTimer();
                final long bgTime = bgTimer != null ?
                        bgTimer.getTotalDurationMsLocked(rawRealtimeMs) : -1;
                final int bgCount = bgTimer != null ? bgTimer.getCountLocked(which) : -1;
                sb.setLength(0);
                sb.append(prefix);
                sb.append("    Sync ");
                sb.append(syncs.keyAt(isy));
                sb.append(": ");
                if (totalTime != 0) {
                    formatTimeMs(sb, totalTime);
                    sb.append("realtime (");
                    sb.append(count);
                    sb.append(" times)");
                    if (bgTime > 0) {
                        sb.append(", ");
                        formatTimeMs(sb, bgTime);
                        sb.append("background (");
                        sb.append(bgCount);
                        sb.append(" times)");
                    }
                } else {
                    sb.append("(not used)");
                }
                pw.println(sb.toString());
                uidActivity = true;
            }

            final ArrayMap<String, ? extends Timer> jobs = u.getJobStats();
            for (int ij=jobs.size()-1; ij>=0; ij--) {
                final Timer timer = jobs.valueAt(ij);
                // Convert from microseconds to milliseconds with rounding
                final long totalTime = (timer.getTotalTimeLocked(rawRealtime, which) + 500) / 1000;
                final int count = timer.getCountLocked(which);
                final Timer bgTimer = timer.getSubTimer();
                final long bgTime = bgTimer != null ?
                        bgTimer.getTotalDurationMsLocked(rawRealtimeMs) : -1;
                final int bgCount = bgTimer != null ? bgTimer.getCountLocked(which) : -1;
                sb.setLength(0);
                sb.append(prefix);
                sb.append("    Job ");
                sb.append(jobs.keyAt(ij));
                sb.append(": ");
                if (totalTime != 0) {
                    formatTimeMs(sb, totalTime);
                    sb.append("realtime (");
                    sb.append(count);
                    sb.append(" times)");
                    if (bgTime > 0) {
                        sb.append(", ");
                        formatTimeMs(sb, bgTime);
                        sb.append("background (");
                        sb.append(bgCount);
                        sb.append(" times)");
                    }
                } else {
                    sb.append("(not used)");
                }
                pw.println(sb.toString());
                uidActivity = true;
            }

            final ArrayMap<String, SparseIntArray> completions = u.getJobCompletionStats();
            for (int ic=completions.size()-1; ic>=0; ic--) {
                SparseIntArray types = completions.valueAt(ic);
                if (types != null) {
                    pw.print(prefix);
                    pw.print("    Job Completions ");
                    pw.print(completions.keyAt(ic));
                    pw.print(":");
                    for (int it=0; it<types.size(); it++) {
                        pw.print(" ");
                        pw.print(JobParameters.getReasonName(types.keyAt(it)));
                        pw.print("(");
                        pw.print(types.valueAt(it));
                        pw.print("x)");
                    }
                    pw.println();
                }
            }

            u.getDeferredJobsLineLocked(sb, which);
            if (sb.length() > 0) {
                pw.print("    Jobs deferred on launch "); pw.println(sb.toString());
            }

            uidActivity |= printTimer(pw, sb, u.getFlashlightTurnedOnTimer(), rawRealtime, which,
                    prefix, "Flashlight");
            uidActivity |= printTimer(pw, sb, u.getCameraTurnedOnTimer(), rawRealtime, which,
                    prefix, "Camera");
            uidActivity |= printTimer(pw, sb, u.getVideoTurnedOnTimer(), rawRealtime, which,
                    prefix, "Video");
            uidActivity |= printTimer(pw, sb, u.getAudioTurnedOnTimer(), rawRealtime, which,
                    prefix, "Audio");

            final SparseArray<? extends BatteryStats.Uid.Sensor> sensors = u.getSensorStats();
            final int NSE = sensors.size();
            for (int ise=0; ise<NSE; ise++) {
                final Uid.Sensor se = sensors.valueAt(ise);
                final int sensorNumber = sensors.keyAt(ise);
                sb.setLength(0);
                sb.append(prefix);
                sb.append("    Sensor ");
                int handle = se.getHandle();
                if (handle == Uid.Sensor.GPS) {
                    sb.append("GPS");
                } else {
                    sb.append(handle);
                }
                sb.append(": ");

                final Timer timer = se.getSensorTime();
                if (timer != null) {
                    // Convert from microseconds to milliseconds with rounding
                    final long totalTime = (timer.getTotalTimeLocked(rawRealtime, which) + 500)
                            / 1000;
                    final int count = timer.getCountLocked(which);
                    final Timer bgTimer = se.getSensorBackgroundTime();
                    final int bgCount = bgTimer != null ? bgTimer.getCountLocked(which) : 0;
                    // 'actualTime' are unpooled and always since reset (regardless of 'which')
                    final long actualTime = timer.getTotalDurationMsLocked(rawRealtimeMs);
                    final long bgActualTime = bgTimer != null ?
                            bgTimer.getTotalDurationMsLocked(rawRealtimeMs) : 0;

                    //timer.logState();
                    if (totalTime != 0) {
                        if (actualTime != totalTime) {
                            formatTimeMs(sb, totalTime);
                            sb.append("blamed realtime, ");
                        }

                        formatTimeMs(sb, actualTime); // since reset, regardless of 'which'
                        sb.append("realtime (");
                        sb.append(count);
                        sb.append(" times)");

                        if (bgActualTime != 0 || bgCount > 0) {
                            sb.append(", ");
                            formatTimeMs(sb, bgActualTime); // since reset, regardless of 'which'
                            sb.append("background (");
                            sb.append(bgCount);
                            sb.append(" times)");
                        }
                    } else {
                        sb.append("(not used)");
                    }
                } else {
                    sb.append("(not used)");
                }

                pw.println(sb.toString());
                uidActivity = true;
            }

            uidActivity |= printTimer(pw, sb, u.getVibratorOnTimer(), rawRealtime, which, prefix,
                    "Vibrator");
            uidActivity |= printTimer(pw, sb, u.getForegroundActivityTimer(), rawRealtime, which,
                    prefix, "Foreground activities");
            uidActivity |= printTimer(pw, sb, u.getForegroundServiceTimer(), rawRealtime, which,
                    prefix, "Foreground services");

            long totalStateTime = 0;
            for (int ips=0; ips<Uid.NUM_PROCESS_STATE; ips++) {
                long time = u.getProcessStateTime(ips, rawRealtime, which);
                if (time > 0) {
                    totalStateTime += time;
                    sb.setLength(0);
                    sb.append(prefix);
                    sb.append("    ");
                    sb.append(Uid.PROCESS_STATE_NAMES[ips]);
                    sb.append(" for: ");
                    formatTimeMs(sb, (time + 500) / 1000);
                    pw.println(sb.toString());
                    uidActivity = true;
                }
            }
            if (totalStateTime > 0) {
                sb.setLength(0);
                sb.append(prefix);
                sb.append("    Total running: ");
                formatTimeMs(sb, (totalStateTime + 500) / 1000);
                pw.println(sb.toString());
            }

            final long userCpuTimeUs = u.getUserCpuTimeUs(which);
            final long systemCpuTimeUs = u.getSystemCpuTimeUs(which);
            if (userCpuTimeUs > 0 || systemCpuTimeUs > 0) {
                sb.setLength(0);
                sb.append(prefix);
                sb.append("    Total cpu time: u=");
                formatTimeMs(sb, userCpuTimeUs / 1000);
                sb.append("s=");
                formatTimeMs(sb, systemCpuTimeUs / 1000);
                pw.println(sb.toString());
            }

            final long[] cpuFreqTimes = u.getCpuFreqTimes(which);
            if (cpuFreqTimes != null) {
                sb.setLength(0);
                sb.append("    Total cpu time per freq:");
                for (int i = 0; i < cpuFreqTimes.length; ++i) {
                    sb.append(" " + cpuFreqTimes[i]);
                }
                pw.println(sb.toString());
            }
            final long[] screenOffCpuFreqTimes = u.getScreenOffCpuFreqTimes(which);
            if (screenOffCpuFreqTimes != null) {
                sb.setLength(0);
                sb.append("    Total screen-off cpu time per freq:");
                for (int i = 0; i < screenOffCpuFreqTimes.length; ++i) {
                    sb.append(" " + screenOffCpuFreqTimes[i]);
                }
                pw.println(sb.toString());
            }

            for (int procState = 0; procState < Uid.NUM_PROCESS_STATE; ++procState) {
                final long[] cpuTimes = u.getCpuFreqTimes(which, procState);
                if (cpuTimes != null) {
                    sb.setLength(0);
                    sb.append("    Cpu times per freq at state "
                            + Uid.PROCESS_STATE_NAMES[procState] + ":");
                    for (int i = 0; i < cpuTimes.length; ++i) {
                        sb.append(" " + cpuTimes[i]);
                    }
                    pw.println(sb.toString());
                }

                final long[] screenOffCpuTimes = u.getScreenOffCpuFreqTimes(which, procState);
                if (screenOffCpuTimes != null) {
                    sb.setLength(0);
                    sb.append("   Screen-off cpu times per freq at state "
                            + Uid.PROCESS_STATE_NAMES[procState] + ":");
                    for (int i = 0; i < screenOffCpuTimes.length; ++i) {
                        sb.append(" " + screenOffCpuTimes[i]);
                    }
                    pw.println(sb.toString());
                }
            }

            final ArrayMap<String, ? extends BatteryStats.Uid.Proc> processStats
                    = u.getProcessStats();
            for (int ipr=processStats.size()-1; ipr>=0; ipr--) {
                final Uid.Proc ps = processStats.valueAt(ipr);
                long userTime;
                long systemTime;
                long foregroundTime;
                int starts;
                int numExcessive;

                userTime = ps.getUserTime(which);
                systemTime = ps.getSystemTime(which);
                foregroundTime = ps.getForegroundTime(which);
                starts = ps.getStarts(which);
                final int numCrashes = ps.getNumCrashes(which);
                final int numAnrs = ps.getNumAnrs(which);
                numExcessive = which == STATS_SINCE_CHARGED
                        ? ps.countExcessivePowers() : 0;

                if (userTime != 0 || systemTime != 0 || foregroundTime != 0 || starts != 0
                        || numExcessive != 0 || numCrashes != 0 || numAnrs != 0) {
                    sb.setLength(0);
                    sb.append(prefix); sb.append("    Proc ");
                            sb.append(processStats.keyAt(ipr)); sb.append(":\n");
                    sb.append(prefix); sb.append("      CPU: ");
                            formatTimeMs(sb, userTime); sb.append("usr + ");
                            formatTimeMs(sb, systemTime); sb.append("krn ; ");
                            formatTimeMs(sb, foregroundTime); sb.append("fg");
                    if (starts != 0 || numCrashes != 0 || numAnrs != 0) {
                        sb.append("\n"); sb.append(prefix); sb.append("      ");
                        boolean hasOne = false;
                        if (starts != 0) {
                            hasOne = true;
                            sb.append(starts); sb.append(" starts");
                        }
                        if (numCrashes != 0) {
                            if (hasOne) {
                                sb.append(", ");
                            }
                            hasOne = true;
                            sb.append(numCrashes); sb.append(" crashes");
                        }
                        if (numAnrs != 0) {
                            if (hasOne) {
                                sb.append(", ");
                            }
                            sb.append(numAnrs); sb.append(" anrs");
                        }
                    }
                    pw.println(sb.toString());
                    for (int e=0; e<numExcessive; e++) {
                        Uid.Proc.ExcessivePower ew = ps.getExcessivePower(e);
                        if (ew != null) {
                            pw.print(prefix); pw.print("      * Killed for ");
                                    if (ew.type == Uid.Proc.ExcessivePower.TYPE_CPU) {
                                        pw.print("cpu");
                                    } else {
                                        pw.print("unknown");
                                    }
                                    pw.print(" use: ");
                                    TimeUtils.formatDuration(ew.usedTime, pw);
                                    pw.print(" over ");
                                    TimeUtils.formatDuration(ew.overTime, pw);
                                    if (ew.overTime != 0) {
                                        pw.print(" (");
                                        pw.print((ew.usedTime*100)/ew.overTime);
                                        pw.println("%)");
                                    }
                        }
                    }
                    uidActivity = true;
                }
            }

            final ArrayMap<String, ? extends BatteryStats.Uid.Pkg> packageStats
                    = u.getPackageStats();
            for (int ipkg=packageStats.size()-1; ipkg>=0; ipkg--) {
                pw.print(prefix); pw.print("    Apk "); pw.print(packageStats.keyAt(ipkg));
                pw.println(":");
                boolean apkActivity = false;
                final Uid.Pkg ps = packageStats.valueAt(ipkg);
                final ArrayMap<String, ? extends Counter> alarms = ps.getWakeupAlarmStats();
                for (int iwa=alarms.size()-1; iwa>=0; iwa--) {
                    pw.print(prefix); pw.print("      Wakeup alarm ");
                            pw.print(alarms.keyAt(iwa)); pw.print(": ");
                            pw.print(alarms.valueAt(iwa).getCountLocked(which));
                            pw.println(" times");
                    apkActivity = true;
                }
                final ArrayMap<String, ? extends  Uid.Pkg.Serv> serviceStats = ps.getServiceStats();
                for (int isvc=serviceStats.size()-1; isvc>=0; isvc--) {
                    final BatteryStats.Uid.Pkg.Serv ss = serviceStats.valueAt(isvc);
                    final long startTime = ss.getStartTime(batteryUptime, which);
                    final int starts = ss.getStarts(which);
                    final int launches = ss.getLaunches(which);
                    if (startTime != 0 || starts != 0 || launches != 0) {
                        sb.setLength(0);
                        sb.append(prefix); sb.append("      Service ");
                                sb.append(serviceStats.keyAt(isvc)); sb.append(":\n");
                        sb.append(prefix); sb.append("        Created for: ");
                                formatTimeMs(sb, startTime / 1000);
                                sb.append("uptime\n");
                        sb.append(prefix); sb.append("        Starts: ");
                                sb.append(starts);
                                sb.append(", launches: "); sb.append(launches);
                        pw.println(sb.toString());
                        apkActivity = true;
                    }
                }
                if (!apkActivity) {
                    pw.print(prefix); pw.println("      (nothing executed)");
                }
                uidActivity = true;
            }
            if (!uidActivity) {
                pw.print(prefix); pw.println("    (nothing executed)");
            }
        }
    }

    static void printBitDescriptions(StringBuilder sb, int oldval, int newval,
            HistoryTag wakelockTag, BitDescription[] descriptions, boolean longNames) {
        int diff = oldval ^ newval;
        if (diff == 0) return;
        boolean didWake = false;
        for (int i=0; i<descriptions.length; i++) {
            BitDescription bd = descriptions[i];
            if ((diff&bd.mask) != 0) {
                sb.append(longNames ? " " : ",");
                if (bd.shift < 0) {
                    sb.append((newval & bd.mask) != 0 ? "+" : "-");
                    sb.append(longNames ? bd.name : bd.shortName);
                    if (bd.mask == HistoryItem.STATE_WAKE_LOCK_FLAG && wakelockTag != null) {
                        didWake = true;
                        sb.append("=");
                        if (longNames) {
                            UserHandle.formatUid(sb, wakelockTag.uid);
                            sb.append(":\"");
                            sb.append(wakelockTag.string);
                            sb.append("\"");
                        } else {
                            sb.append(wakelockTag.poolIdx);
                        }
                    }
                } else {
                    sb.append(longNames ? bd.name : bd.shortName);
                    sb.append("=");
                    int val = (newval&bd.mask)>>bd.shift;
                    if (bd.values != null && val >= 0 && val < bd.values.length) {
                        sb.append(longNames ? bd.values[val] : bd.shortValues[val]);
                    } else {
                        sb.append(val);
                    }
                }
            }
        }
        if (!didWake && wakelockTag != null) {
            sb.append(longNames ? " wake_lock=" : ",w=");
            if (longNames) {
                UserHandle.formatUid(sb, wakelockTag.uid);
                sb.append(":\"");
                sb.append(wakelockTag.string);
                sb.append("\"");
            } else {
                sb.append(wakelockTag.poolIdx);
            }
        }
    }

    public void prepareForDumpLocked() {
        // We don't need to require subclasses implement this.
    }

    public static class HistoryPrinter {
        int oldState = 0;
        int oldState2 = 0;
        int oldLevel = -1;
        int oldStatus = -1;
        int oldHealth = -1;
        int oldPlug = -1;
        int oldTemp = -1;
        int oldVolt = -1;
        int oldChargeMAh = -1;
        long lastTime = -1;

        void reset() {
            oldState = oldState2 = 0;
            oldLevel = -1;
            oldStatus = -1;
            oldHealth = -1;
            oldPlug = -1;
            oldTemp = -1;
            oldVolt = -1;
            oldChargeMAh = -1;
        }

        public void printNextItem(PrintWriter pw, HistoryItem rec, long baseTime, boolean checkin,
                boolean verbose) {
            pw.print(printNextItem(rec, baseTime, checkin, verbose));
        }

        
Print the next history item to proto. /** Print the next history item to proto. */
        public void printNextItem(ProtoOutputStream proto, HistoryItem rec, long baseTime,
                boolean verbose) {
            String item = printNextItem(rec, baseTime, true, verbose);
            for (String line : item.split("\n")) {
                proto.write(BatteryStatsServiceDumpHistoryProto.CSV_LINES, line);
            }
        }

        private String printNextItem(HistoryItem rec, long baseTime, boolean checkin,
                boolean verbose) {
            StringBuilder item = new StringBuilder();
            if (!checkin) {
                item.append("  ");
                TimeUtils.formatDuration(
                        rec.time - baseTime, item, TimeUtils.HUNDRED_DAY_FIELD_LEN);
                item.append(" (");
                item.append(rec.numReadInts);
                item.append(") ");
            } else {
                item.append(BATTERY_STATS_CHECKIN_VERSION); item.append(',');
                item.append(HISTORY_DATA); item.append(',');
                if (lastTime < 0) {
                    item.append(rec.time - baseTime);
                } else {
                    item.append(rec.time - lastTime);
                }
                lastTime = rec.time;
            }
            if (rec.cmd == HistoryItem.CMD_START) {
                if (checkin) {
                    item.append(":");
                }
                item.append("START\n");
                reset();
            } else if (rec.cmd == HistoryItem.CMD_CURRENT_TIME
                    || rec.cmd == HistoryItem.CMD_RESET) {
                if (checkin) {
                    item.append(":");
                }
                if (rec.cmd == HistoryItem.CMD_RESET) {
                    item.append("RESET:");
                    reset();
                }
                item.append("TIME:");
                if (checkin) {
                    item.append(rec.currentTime);
                    item.append("\n");
                } else {
                    item.append(" ");
                    item.append(DateFormat.format("yyyy-MM-dd-HH-mm-ss",
                            rec.currentTime).toString());
                    item.append("\n");
                }
            } else if (rec.cmd == HistoryItem.CMD_SHUTDOWN) {
                if (checkin) {
                    item.append(":");
                }
                item.append("SHUTDOWN\n");
            } else if (rec.cmd == HistoryItem.CMD_OVERFLOW) {
                if (checkin) {
                    item.append(":");
                }
                item.append("*OVERFLOW*\n");
            } else {
                if (!checkin) {
                    if (rec.batteryLevel < 10) item.append("00");
                    else if (rec.batteryLevel < 100) item.append("0");
                    item.append(rec.batteryLevel);
                    if (verbose) {
                        item.append(" ");
                        if (rec.states < 0) ;
                        else if (rec.states < 0x10) item.append("0000000");
                        else if (rec.states < 0x100) item.append("000000");
                        else if (rec.states < 0x1000) item.append("00000");
                        else if (rec.states < 0x10000) item.append("0000");
                        else if (rec.states < 0x100000) item.append("000");
                        else if (rec.states < 0x1000000) item.append("00");
                        else if (rec.states < 0x10000000) item.append("0");
                        item.append(Integer.toHexString(rec.states));
                    }
                } else {
                    if (oldLevel != rec.batteryLevel) {
                        oldLevel = rec.batteryLevel;
                        item.append(",Bl="); item.append(rec.batteryLevel);
                    }
                }
                if (oldStatus != rec.batteryStatus) {
                    oldStatus = rec.batteryStatus;
                    item.append(checkin ? ",Bs=" : " status=");
                    switch (oldStatus) {
                        case BatteryManager.BATTERY_STATUS_UNKNOWN:
                            item.append(checkin ? "?" : "unknown");
                            break;
                        case BatteryManager.BATTERY_STATUS_CHARGING:
                            item.append(checkin ? "c" : "charging");
                            break;
                        case BatteryManager.BATTERY_STATUS_DISCHARGING:
                            item.append(checkin ? "d" : "discharging");
                            break;
                        case BatteryManager.BATTERY_STATUS_NOT_CHARGING:
                            item.append(checkin ? "n" : "not-charging");
                            break;
                        case BatteryManager.BATTERY_STATUS_FULL:
                            item.append(checkin ? "f" : "full");
                            break;
                        default:
                            item.append(oldStatus);
                            break;
                    }
                }
                if (oldHealth != rec.batteryHealth) {
                    oldHealth = rec.batteryHealth;
                    item.append(checkin ? ",Bh=" : " health=");
                    switch (oldHealth) {
                        case BatteryManager.BATTERY_HEALTH_UNKNOWN:
                            item.append(checkin ? "?" : "unknown");
                            break;
                        case BatteryManager.BATTERY_HEALTH_GOOD:
                            item.append(checkin ? "g" : "good");
                            break;
                        case BatteryManager.BATTERY_HEALTH_OVERHEAT:
                            item.append(checkin ? "h" : "overheat");
                            break;
                        case BatteryManager.BATTERY_HEALTH_DEAD:
                            item.append(checkin ? "d" : "dead");
                            break;
                        case BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE:
                            item.append(checkin ? "v" : "over-voltage");
                            break;
                        case BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE:
                            item.append(checkin ? "f" : "failure");
                            break;
                        case BatteryManager.BATTERY_HEALTH_COLD:
                            item.append(checkin ? "c" : "cold");
                            break;
                        default:
                            item.append(oldHealth);
                            break;
                    }
                }
                if (oldPlug != rec.batteryPlugType) {
                    oldPlug = rec.batteryPlugType;
                    item.append(checkin ? ",Bp=" : " plug=");
                    switch (oldPlug) {
                        case 0:
                            item.append(checkin ? "n" : "none");
                            break;
                        case BatteryManager.BATTERY_PLUGGED_AC:
                            item.append(checkin ? "a" : "ac");
                            break;
                        case BatteryManager.BATTERY_PLUGGED_USB:
                            item.append(checkin ? "u" : "usb");
                            break;
                        case BatteryManager.BATTERY_PLUGGED_WIRELESS:
                            item.append(checkin ? "w" : "wireless");
                            break;
                        default:
                            item.append(oldPlug);
                            break;
                    }
                }
                if (oldTemp != rec.batteryTemperature) {
                    oldTemp = rec.batteryTemperature;
                    item.append(checkin ? ",Bt=" : " temp=");
                    item.append(oldTemp);
                }
                if (oldVolt != rec.batteryVoltage) {
                    oldVolt = rec.batteryVoltage;
                    item.append(checkin ? ",Bv=" : " volt=");
                    item.append(oldVolt);
                }
                final int chargeMAh = rec.batteryChargeUAh / 1000;
                if (oldChargeMAh != chargeMAh) {
                    oldChargeMAh = chargeMAh;
                    item.append(checkin ? ",Bcc=" : " charge=");
                    item.append(oldChargeMAh);
                }
                printBitDescriptions(item, oldState, rec.states, rec.wakelockTag,
                        HISTORY_STATE_DESCRIPTIONS, !checkin);
                printBitDescriptions(item, oldState2, rec.states2, null,
                        HISTORY_STATE2_DESCRIPTIONS, !checkin);
                if (rec.wakeReasonTag != null) {
                    if (checkin) {
                        item.append(",wr=");
                        item.append(rec.wakeReasonTag.poolIdx);
                    } else {
                        item.append(" wake_reason=");
                        item.append(rec.wakeReasonTag.uid);
                        item.append(":\"");
                        item.append(rec.wakeReasonTag.string);
                        item.append("\"");
                    }
                }
                if (rec.eventCode != HistoryItem.EVENT_NONE) {
                    item.append(checkin ? "," : " ");
                    if ((rec.eventCode&HistoryItem.EVENT_FLAG_START) != 0) {
                        item.append("+");
                    } else if ((rec.eventCode&HistoryItem.EVENT_FLAG_FINISH) != 0) {
                        item.append("-");
                    }
                    String[] eventNames = checkin ? HISTORY_EVENT_CHECKIN_NAMES
                            : HISTORY_EVENT_NAMES;
                    int idx = rec.eventCode & ~(HistoryItem.EVENT_FLAG_START
                            | HistoryItem.EVENT_FLAG_FINISH);
                    if (idx >= 0 && idx < eventNames.length) {
                        item.append(eventNames[idx]);
                    } else {
                        item.append(checkin ? "Ev" : "event");
                        item.append(idx);
                    }
                    item.append("=");
                    if (checkin) {
                        item.append(rec.eventTag.poolIdx);
                    } else {
                        item.append(HISTORY_EVENT_INT_FORMATTERS[idx]
                                .applyAsString(rec.eventTag.uid));
                        item.append(":\"");
                        item.append(rec.eventTag.string);
                        item.append("\"");
                    }
                }
                item.append("\n");
                if (rec.stepDetails != null) {
                    if (!checkin) {
                        item.append("                 Details: cpu=");
                        item.append(rec.stepDetails.userTime);
                        item.append("u+");
                        item.append(rec.stepDetails.systemTime);
                        item.append("s");
                        if (rec.stepDetails.appCpuUid1 >= 0) {
                            item.append(" (");
                            printStepCpuUidDetails(item, rec.stepDetails.appCpuUid1,
                                    rec.stepDetails.appCpuUTime1, rec.stepDetails.appCpuSTime1);
                            if (rec.stepDetails.appCpuUid2 >= 0) {
                                item.append(", ");
                                printStepCpuUidDetails(item, rec.stepDetails.appCpuUid2,
                                        rec.stepDetails.appCpuUTime2, rec.stepDetails.appCpuSTime2);
                            }
                            if (rec.stepDetails.appCpuUid3 >= 0) {
                                item.append(", ");
                                printStepCpuUidDetails(item, rec.stepDetails.appCpuUid3,
                                        rec.stepDetails.appCpuUTime3, rec.stepDetails.appCpuSTime3);
                            }
                            item.append(')');
                        }
                        item.append("\n");
                        item.append("                          /proc/stat=");
                        item.append(rec.stepDetails.statUserTime);
                        item.append(" usr, ");
                        item.append(rec.stepDetails.statSystemTime);
                        item.append(" sys, ");
                        item.append(rec.stepDetails.statIOWaitTime);
                        item.append(" io, ");
                        item.append(rec.stepDetails.statIrqTime);
                        item.append(" irq, ");
                        item.append(rec.stepDetails.statSoftIrqTime);
                        item.append(" sirq, ");
                        item.append(rec.stepDetails.statIdlTime);
                        item.append(" idle");
                        int totalRun = rec.stepDetails.statUserTime + rec.stepDetails.statSystemTime
                                + rec.stepDetails.statIOWaitTime + rec.stepDetails.statIrqTime
                                + rec.stepDetails.statSoftIrqTime;
                        int total = totalRun + rec.stepDetails.statIdlTime;
                        if (total > 0) {
                            item.append(" (");
                            float perc = ((float)totalRun) / ((float)total) * 100;
                            item.append(String.format("%.1f%%", perc));
                            item.append(" of ");
                            StringBuilder sb = new StringBuilder(64);
                            formatTimeMsNoSpace(sb, total*10);
                            item.append(sb);
                            item.append(")");
                        }
                        item.append(", PlatformIdleStat ");
                        item.append(rec.stepDetails.statPlatformIdleState);
                        item.append("\n");

                        item.append(", SubsystemPowerState ");
                        item.append(rec.stepDetails.statSubsystemPowerState);
                        item.append("\n");
                    } else {
                        item.append(BATTERY_STATS_CHECKIN_VERSION); item.append(',');
                        item.append(HISTORY_DATA); item.append(",0,Dcpu=");
                        item.append(rec.stepDetails.userTime);
                        item.append(":");
                        item.append(rec.stepDetails.systemTime);
                        if (rec.stepDetails.appCpuUid1 >= 0) {
                            printStepCpuUidCheckinDetails(item, rec.stepDetails.appCpuUid1,
                                    rec.stepDetails.appCpuUTime1, rec.stepDetails.appCpuSTime1);
                            if (rec.stepDetails.appCpuUid2 >= 0) {
                                printStepCpuUidCheckinDetails(item, rec.stepDetails.appCpuUid2,
                                        rec.stepDetails.appCpuUTime2, rec.stepDetails.appCpuSTime2);
                            }
                            if (rec.stepDetails.appCpuUid3 >= 0) {
                                printStepCpuUidCheckinDetails(item, rec.stepDetails.appCpuUid3,
                                        rec.stepDetails.appCpuUTime3, rec.stepDetails.appCpuSTime3);
                            }
                        }
                        item.append("\n");
                        item.append(BATTERY_STATS_CHECKIN_VERSION); item.append(',');
                        item.append(HISTORY_DATA); item.append(",0,Dpst=");
                        item.append(rec.stepDetails.statUserTime);
                        item.append(',');
                        item.append(rec.stepDetails.statSystemTime);
                        item.append(',');
                        item.append(rec.stepDetails.statIOWaitTime);
                        item.append(',');
                        item.append(rec.stepDetails.statIrqTime);
                        item.append(',');
                        item.append(rec.stepDetails.statSoftIrqTime);
                        item.append(',');
                        item.append(rec.stepDetails.statIdlTime);
                        item.append(',');
                        if (rec.stepDetails.statPlatformIdleState != null) {
                            item.append(rec.stepDetails.statPlatformIdleState);
                            if (rec.stepDetails.statSubsystemPowerState != null) {
                                item.append(',');
                            }
                        }

                        if (rec.stepDetails.statSubsystemPowerState != null) {
                            item.append(rec.stepDetails.statSubsystemPowerState);
                        }
                        item.append("\n");
                    }
                }
                oldState = rec.states;
                oldState2 = rec.states2;
            }

            return item.toString();
        }

        private void printStepCpuUidDetails(StringBuilder sb, int uid, int utime, int stime) {
            UserHandle.formatUid(sb, uid);
            sb.append("=");
            sb.append(utime);
            sb.append("u+");
            sb.append(stime);
            sb.append("s");
        }

        private void printStepCpuUidCheckinDetails(StringBuilder sb, int uid, int utime,
                int stime) {
            sb.append('/');
            sb.append(uid);
            sb.append(":");
            sb.append(utime);
            sb.append(":");
            sb.append(stime);
        }
    }

    private void printSizeValue(PrintWriter pw, long size) {
        float result = size;
        String suffix = "";
        if (result >= 10*1024) {
            suffix = "KB";
            result = result / 1024;
        }
        if (result >= 10*1024) {
            suffix = "MB";
            result = result / 1024;
        }
        if (result >= 10*1024) {
            suffix = "GB";
            result = result / 1024;
        }
        if (result >= 10*1024) {
            suffix = "TB";
            result = result / 1024;
        }
        if (result >= 10*1024) {
            suffix = "PB";
            result = result / 1024;
        }
        pw.print((int)result);
        pw.print(suffix);
    }

    private static boolean dumpTimeEstimate(PrintWriter pw, String label1, String label2,
            String label3, long estimatedTime) {
        if (estimatedTime < 0) {
            return false;
        }
        pw.print(label1);
        pw.print(label2);
        pw.print(label3);
        StringBuilder sb = new StringBuilder(64);
        formatTimeMs(sb, estimatedTime);
        pw.print(sb);
        pw.println();
        return true;
    }

    private static boolean dumpDurationSteps(PrintWriter pw, String prefix, String header,
            LevelStepTracker steps, boolean checkin) {
        if (steps == null) {
            return false;
        }
        int count = steps.mNumStepDurations;
        if (count <= 0) {
            return false;
        }
        if (!checkin) {
            pw.println(header);
        }
        String[] lineArgs = new String[5];
        for (int i=0; i<count; i++) {
            long duration = steps.getDurationAt(i);
            int level = steps.getLevelAt(i);
            long initMode = steps.getInitModeAt(i);
            long modMode = steps.getModModeAt(i);
            if (checkin) {
                lineArgs[0] = Long.toString(duration);
                lineArgs[1] = Integer.toString(level);
                if ((modMode&STEP_LEVEL_MODE_SCREEN_STATE) == 0) {
                    switch ((int)(initMode&STEP_LEVEL_MODE_SCREEN_STATE) + 1) {
                        case Display.STATE_OFF: lineArgs[2] = "s-"; break;
                        case Display.STATE_ON: lineArgs[2] = "s+"; break;
                        case Display.STATE_DOZE: lineArgs[2] = "sd"; break;
                        case Display.STATE_DOZE_SUSPEND: lineArgs[2] = "sds"; break;
                        default: lineArgs[2] = "?"; break;
                    }
                } else {
                    lineArgs[2] = "";
                }
                if ((modMode&STEP_LEVEL_MODE_POWER_SAVE) == 0) {
                    lineArgs[3] = (initMode&STEP_LEVEL_MODE_POWER_SAVE) != 0 ? "p+" : "p-";
                } else {
                    lineArgs[3] = "";
                }
                if ((modMode&STEP_LEVEL_MODE_DEVICE_IDLE) == 0) {
                    lineArgs[4] = (initMode&STEP_LEVEL_MODE_DEVICE_IDLE) != 0 ? "i+" : "i-";
                } else {
                    lineArgs[4] = "";
                }
                dumpLine(pw, 0 /* uid */, "i" /* category */, header, (Object[])lineArgs);
            } else {
                pw.print(prefix);
                pw.print("#"); pw.print(i); pw.print(": ");
                TimeUtils.formatDuration(duration, pw);
                pw.print(" to "); pw.print(level);
                boolean haveModes = false;
                if ((modMode&STEP_LEVEL_MODE_SCREEN_STATE) == 0) {
                    pw.print(" (");
                    switch ((int)(initMode&STEP_LEVEL_MODE_SCREEN_STATE) + 1) {
                        case Display.STATE_OFF: pw.print("screen-off"); break;
                        case Display.STATE_ON: pw.print("screen-on"); break;
                        case Display.STATE_DOZE: pw.print("screen-doze"); break;
                        case Display.STATE_DOZE_SUSPEND: pw.print("screen-doze-suspend"); break;
                        default: pw.print("screen-?"); break;
                    }
                    haveModes = true;
                }
                if ((modMode&STEP_LEVEL_MODE_POWER_SAVE) == 0) {
                    pw.print(haveModes ? ", " : " (");
                    pw.print((initMode&STEP_LEVEL_MODE_POWER_SAVE) != 0
                            ? "power-save-on" : "power-save-off");
                    haveModes = true;
                }
                if ((modMode&STEP_LEVEL_MODE_DEVICE_IDLE) == 0) {
                    pw.print(haveModes ? ", " : " (");
                    pw.print((initMode&STEP_LEVEL_MODE_DEVICE_IDLE) != 0
                            ? "device-idle-on" : "device-idle-off");
                    haveModes = true;
                }
                if (haveModes) {
                    pw.print(")");
                }
                pw.println();
            }
        }
        return true;
    }

    private static void dumpDurationSteps(ProtoOutputStream proto, long fieldId,
            LevelStepTracker steps) {
        if (steps == null) {
            return;
        }
        int count = steps.mNumStepDurations;
        for (int i = 0; i < count; ++i) {
            long token = proto.start(fieldId);
            proto.write(SystemProto.BatteryLevelStep.DURATION_MS, steps.getDurationAt(i));
            proto.write(SystemProto.BatteryLevelStep.LEVEL, steps.getLevelAt(i));

            final long initMode = steps.getInitModeAt(i);
            final long modMode = steps.getModModeAt(i);

            int ds = SystemProto.BatteryLevelStep.DS_MIXED;
            if ((modMode & STEP_LEVEL_MODE_SCREEN_STATE) == 0) {
                switch ((int) (initMode & STEP_LEVEL_MODE_SCREEN_STATE) + 1) {
                    case Display.STATE_OFF:
                        ds = SystemProto.BatteryLevelStep.DS_OFF;
                        break;
                    case Display.STATE_ON:
                        ds = SystemProto.BatteryLevelStep.DS_ON;
                        break;
                    case Display.STATE_DOZE:
                        ds = SystemProto.BatteryLevelStep.DS_DOZE;
                        break;
                    case Display.STATE_DOZE_SUSPEND:
                        ds = SystemProto.BatteryLevelStep.DS_DOZE_SUSPEND;
                        break;
                    default:
                        ds = SystemProto.BatteryLevelStep.DS_ERROR;
                        break;
                }
            }
            proto.write(SystemProto.BatteryLevelStep.DISPLAY_STATE, ds);

            int psm = SystemProto.BatteryLevelStep.PSM_MIXED;
            if ((modMode & STEP_LEVEL_MODE_POWER_SAVE) == 0) {
                psm = (initMode & STEP_LEVEL_MODE_POWER_SAVE) != 0
                    ? SystemProto.BatteryLevelStep.PSM_ON : SystemProto.BatteryLevelStep.PSM_OFF;
            }
            proto.write(SystemProto.BatteryLevelStep.POWER_SAVE_MODE, psm);

            int im = SystemProto.BatteryLevelStep.IM_MIXED;
            if ((modMode & STEP_LEVEL_MODE_DEVICE_IDLE) == 0) {
                im = (initMode & STEP_LEVEL_MODE_DEVICE_IDLE) != 0
                    ? SystemProto.BatteryLevelStep.IM_ON : SystemProto.BatteryLevelStep.IM_OFF;
            }
            proto.write(SystemProto.BatteryLevelStep.IDLE_MODE, im);

            proto.end(token);
        }
    }

    public static final int DUMP_CHARGED_ONLY = 1<<1;
    public static final int DUMP_DAILY_ONLY = 1<<2;
    public static final int DUMP_HISTORY_ONLY = 1<<3;
    public static final int DUMP_INCLUDE_HISTORY = 1<<4;
    public static final int DUMP_VERBOSE = 1<<5;
    public static final int DUMP_DEVICE_WIFI_ONLY = 1<<6;

    private void dumpHistoryLocked(PrintWriter pw, int flags, long histStart, boolean checkin) {
        final HistoryPrinter hprinter = new HistoryPrinter();
        final HistoryItem rec = new HistoryItem();
        long lastTime = -1;
        long baseTime = -1;
        boolean printed = false;
        HistoryEventTracker tracker = null;
        while (getNextHistoryLocked(rec)) {
            lastTime = rec.time;
            if (baseTime < 0) {
                baseTime = lastTime;
            }
            if (rec.time >= histStart) {
                if (histStart >= 0 && !printed) {
                    if (rec.cmd == HistoryItem.CMD_CURRENT_TIME
                            || rec.cmd == HistoryItem.CMD_RESET
                            || rec.cmd == HistoryItem.CMD_START
                            || rec.cmd == HistoryItem.CMD_SHUTDOWN) {
                        printed = true;
                        hprinter.printNextItem(pw, rec, baseTime, checkin,
                                (flags&DUMP_VERBOSE) != 0);
                        rec.cmd = HistoryItem.CMD_UPDATE;
                    } else if (rec.currentTime != 0) {
                        printed = true;
                        byte cmd = rec.cmd;
                        rec.cmd = HistoryItem.CMD_CURRENT_TIME;
                        hprinter.printNextItem(pw, rec, baseTime, checkin,
                                (flags&DUMP_VERBOSE) != 0);
                        rec.cmd = cmd;
                    }
                    if (tracker != null) {
                        if (rec.cmd != HistoryItem.CMD_UPDATE) {
                            hprinter.printNextItem(pw, rec, baseTime, checkin,
                                    (flags&DUMP_VERBOSE) != 0);
                            rec.cmd = HistoryItem.CMD_UPDATE;
                        }
                        int oldEventCode = rec.eventCode;
                        HistoryTag oldEventTag = rec.eventTag;
                        rec.eventTag = new HistoryTag();
                        for (int i=0; i<HistoryItem.EVENT_COUNT; i++) {
                            HashMap<String, SparseIntArray> active
                                    = tracker.getStateForEvent(i);
                            if (active == null) {
                                continue;
                            }
                            for (HashMap.Entry<String, SparseIntArray> ent
                                    : active.entrySet()) {
                                SparseIntArray uids = ent.getValue();
                                for (int j=0; j<uids.size(); j++) {
                                    rec.eventCode = i;
                                    rec.eventTag.string = ent.getKey();
                                    rec.eventTag.uid = uids.keyAt(j);
                                    rec.eventTag.poolIdx = uids.valueAt(j);
                                    hprinter.printNextItem(pw, rec, baseTime, checkin,
                                            (flags&DUMP_VERBOSE) != 0);
                                    rec.wakeReasonTag = null;
                                    rec.wakelockTag = null;
                                }
                            }
                        }
                        rec.eventCode = oldEventCode;
                        rec.eventTag = oldEventTag;
                        tracker = null;
                    }
                }
                hprinter.printNextItem(pw, rec, baseTime, checkin,
                        (flags&DUMP_VERBOSE) != 0);
            } else if (false && rec.eventCode != HistoryItem.EVENT_NONE) {
                // This is an attempt to aggregate the previous state and generate
                // fake events to reflect that state at the point where we start
                // printing real events.  It doesn't really work right, so is turned off.
                if (tracker == null) {
                    tracker = new HistoryEventTracker();
                }
                tracker.updateState(rec.eventCode, rec.eventTag.string,
                        rec.eventTag.uid, rec.eventTag.poolIdx);
            }
        }
        if (histStart >= 0) {
            commitCurrentHistoryBatchLocked();
            pw.print(checkin ? "NEXT: " : "  NEXT: "); pw.println(lastTime+1);
        }
    }

    private void dumpDailyLevelStepSummary(PrintWriter pw, String prefix, String label,
            LevelStepTracker steps, StringBuilder tmpSb, int[] tmpOutInt) {
        if (steps == null) {
            return;
        }
        long timeRemaining = steps.computeTimeEstimate(0, 0, tmpOutInt);
        if (timeRemaining >= 0) {
            pw.print(prefix); pw.print(label); pw.print(" total time: ");
            tmpSb.setLength(0);
            formatTimeMs(tmpSb, timeRemaining);
            pw.print(tmpSb);
            pw.print(" (from "); pw.print(tmpOutInt[0]);
            pw.println(" steps)");
        }
        for (int i=0; i< STEP_LEVEL_MODES_OF_INTEREST.length; i++) {
            long estimatedTime = steps.computeTimeEstimate(STEP_LEVEL_MODES_OF_INTEREST[i],
                    STEP_LEVEL_MODE_VALUES[i], tmpOutInt);
            if (estimatedTime > 0) {
                pw.print(prefix); pw.print(label); pw.print(" ");
                pw.print(STEP_LEVEL_MODE_LABELS[i]);
                pw.print(" time: ");
                tmpSb.setLength(0);
                formatTimeMs(tmpSb, estimatedTime);
                pw.print(tmpSb);
                pw.print(" (from "); pw.print(tmpOutInt[0]);
                pw.println(" steps)");
            }
        }
    }

    private void dumpDailyPackageChanges(PrintWriter pw, String prefix,
            ArrayList<PackageChange> changes) {
        if (changes == null) {
            return;
        }
        pw.print(prefix); pw.println("Package changes:");
        for (int i=0; i<changes.size(); i++) {
            PackageChange pc = changes.get(i);
            if (pc.mUpdate) {
                pw.print(prefix); pw.print("  Update "); pw.print(pc.mPackageName);
                pw.print(" vers="); pw.println(pc.mVersionCode);
            } else {
                pw.print(prefix); pw.print("  Uninstall "); pw.println(pc.mPackageName);
            }
        }
    }

    
Dumps a human-readable summary of the battery statistics to the given PrintWriter.
Params:
pw – a Printer to receive the dump output./**
     * Dumps a human-readable summary of the battery statistics to the given PrintWriter.
     *
     * @param pw a Printer to receive the dump output.
     */
    @SuppressWarnings("unused")
    public void dumpLocked(Context context, PrintWriter pw, int flags, int reqUid, long histStart) {
        prepareForDumpLocked();

        final boolean filtering = (flags
                & (DUMP_HISTORY_ONLY|DUMP_CHARGED_ONLY|DUMP_DAILY_ONLY)) != 0;

        if ((flags&DUMP_HISTORY_ONLY) != 0 || !filtering) {
            final long historyTotalSize = getHistoryTotalSize();
            final long historyUsedSize = getHistoryUsedSize();
            if (startIteratingHistoryLocked()) {
                try {
                    pw.print("Battery History (");
                    pw.print((100*historyUsedSize)/historyTotalSize);
                    pw.print("% used, ");
                    printSizeValue(pw, historyUsedSize);
                    pw.print(" used of ");
                    printSizeValue(pw, historyTotalSize);
                    pw.print(", ");
                    pw.print(getHistoryStringPoolSize());
                    pw.print(" strings using ");
                    printSizeValue(pw, getHistoryStringPoolBytes());
                    pw.println("):");
                    dumpHistoryLocked(pw, flags, histStart, false);
                    pw.println();
                } finally {
                    finishIteratingHistoryLocked();
                }
            }

            if (startIteratingOldHistoryLocked()) {
                try {
                    final HistoryItem rec = new HistoryItem();
                    pw.println("Old battery History:");
                    HistoryPrinter hprinter = new HistoryPrinter();
                    long baseTime = -1;
                    while (getNextOldHistoryLocked(rec)) {
                        if (baseTime < 0) {
                            baseTime = rec.time;
                        }
                        hprinter.printNextItem(pw, rec, baseTime, false, (flags&DUMP_VERBOSE) != 0);
                    }
                    pw.println();
                } finally {
                    finishIteratingOldHistoryLocked();
                }
            }
        }

        if (filtering && (flags&(DUMP_CHARGED_ONLY|DUMP_DAILY_ONLY)) == 0) {
            return;
        }

        if (!filtering) {
            SparseArray<? extends Uid> uidStats = getUidStats();
            final int NU = uidStats.size();
            boolean didPid = false;
            long nowRealtime = SystemClock.elapsedRealtime();
            for (int i=0; i<NU; i++) {
                Uid uid = uidStats.valueAt(i);
                SparseArray<? extends Uid.Pid> pids = uid.getPidStats();
                if (pids != null) {
                    for (int j=0; j<pids.size(); j++) {
                        Uid.Pid pid = pids.valueAt(j);
                        if (!didPid) {
                            pw.println("Per-PID Stats:");
                            didPid = true;
                        }
                        long time = pid.mWakeSumMs + (pid.mWakeNesting > 0
                                ? (nowRealtime - pid.mWakeStartMs) : 0);
                        pw.print("  PID "); pw.print(pids.keyAt(j));
                                pw.print(" wake time: ");
                                TimeUtils.formatDuration(time, pw);
                                pw.println("");
                    }
                }
            }
            if (didPid) {
                pw.println();
            }
        }

        if (!filtering || (flags&DUMP_CHARGED_ONLY) != 0) {
            if (dumpDurationSteps(pw, "  ", "Discharge step durations:",
                    getDischargeLevelStepTracker(), false)) {
                long timeRemaining = computeBatteryTimeRemaining(
                    SystemClock.elapsedRealtime() * 1000);
                if (timeRemaining >= 0) {
                    pw.print("  Estimated discharge time remaining: ");
                    TimeUtils.formatDuration(timeRemaining / 1000, pw);
                    pw.println();
                }
                final LevelStepTracker steps = getDischargeLevelStepTracker();
                for (int i=0; i< STEP_LEVEL_MODES_OF_INTEREST.length; i++) {
                    dumpTimeEstimate(pw, "  Estimated ", STEP_LEVEL_MODE_LABELS[i], " time: ",
                            steps.computeTimeEstimate(STEP_LEVEL_MODES_OF_INTEREST[i],
                                    STEP_LEVEL_MODE_VALUES[i], null));
                }
                pw.println();
            }
            if (dumpDurationSteps(pw, "  ", "Charge step durations:",
                    getChargeLevelStepTracker(), false)) {
                long timeRemaining = computeChargeTimeRemaining(
                    SystemClock.elapsedRealtime() * 1000);
                if (timeRemaining >= 0) {
                    pw.print("  Estimated charge time remaining: ");
                    TimeUtils.formatDuration(timeRemaining / 1000, pw);
                    pw.println();
                }
                pw.println();
            }
        }
        if (!filtering || (flags & DUMP_DAILY_ONLY) != 0) {
            pw.println("Daily stats:");
            pw.print("  Current start time: ");
            pw.println(DateFormat.format("yyyy-MM-dd-HH-mm-ss",
                    getCurrentDailyStartTime()).toString());
            pw.print("  Next min deadline: ");
            pw.println(DateFormat.format("yyyy-MM-dd-HH-mm-ss",
                    getNextMinDailyDeadline()).toString());
            pw.print("  Next max deadline: ");
            pw.println(DateFormat.format("yyyy-MM-dd-HH-mm-ss",
                    getNextMaxDailyDeadline()).toString());
            StringBuilder sb = new StringBuilder(64);
            int[] outInt = new int[1];
            LevelStepTracker dsteps = getDailyDischargeLevelStepTracker();
            LevelStepTracker csteps = getDailyChargeLevelStepTracker();
            ArrayList<PackageChange> pkgc = getDailyPackageChanges();
            if (dsteps.mNumStepDurations > 0 || csteps.mNumStepDurations > 0 || pkgc != null) {
                if ((flags&DUMP_DAILY_ONLY) != 0 || !filtering) {
                    if (dumpDurationSteps(pw, "    ", "  Current daily discharge step durations:",
                            dsteps, false)) {
                        dumpDailyLevelStepSummary(pw, "      ", "Discharge", dsteps,
                                sb, outInt);
                    }
                    if (dumpDurationSteps(pw, "    ", "  Current daily charge step durations:",
                            csteps, false)) {
                        dumpDailyLevelStepSummary(pw, "      ", "Charge", csteps,
                                sb, outInt);
                    }
                    dumpDailyPackageChanges(pw, "    ", pkgc);
                } else {
                    pw.println("  Current daily steps:");
                    dumpDailyLevelStepSummary(pw, "    ", "Discharge", dsteps,
                            sb, outInt);
                    dumpDailyLevelStepSummary(pw, "    ", "Charge", csteps,
                            sb, outInt);
                }
            }
            DailyItem dit;
            int curIndex = 0;
            while ((dit=getDailyItemLocked(curIndex)) != null) {
                curIndex++;
                if ((flags&DUMP_DAILY_ONLY) != 0) {
                    pw.println();
                }
                pw.print("  Daily from ");
                pw.print(DateFormat.format("yyyy-MM-dd-HH-mm-ss", dit.mStartTime).toString());
                pw.print(" to ");
                pw.print(DateFormat.format("yyyy-MM-dd-HH-mm-ss", dit.mEndTime).toString());
                pw.println(":");
                if ((flags&DUMP_DAILY_ONLY) != 0 || !filtering) {
                    if (dumpDurationSteps(pw, "      ",
                            "    Discharge step durations:", dit.mDischargeSteps, false)) {
                        dumpDailyLevelStepSummary(pw, "        ", "Discharge", dit.mDischargeSteps,
                                sb, outInt);
                    }
                    if (dumpDurationSteps(pw, "      ",
                            "    Charge step durations:", dit.mChargeSteps, false)) {
                        dumpDailyLevelStepSummary(pw, "        ", "Charge", dit.mChargeSteps,
                                sb, outInt);
                    }
                    dumpDailyPackageChanges(pw, "    ", dit.mPackageChanges);
                } else {
                    dumpDailyLevelStepSummary(pw, "    ", "Discharge", dit.mDischargeSteps,
                            sb, outInt);
                    dumpDailyLevelStepSummary(pw, "    ", "Charge", dit.mChargeSteps,
                            sb, outInt);
                }
            }
            pw.println();
        }
        if (!filtering || (flags&DUMP_CHARGED_ONLY) != 0) {
            pw.println("Statistics since last charge:");
            pw.println("  System starts: " + getStartCount()
                    + ", currently on battery: " + getIsOnBattery());
            dumpLocked(context, pw, "", STATS_SINCE_CHARGED, reqUid,
                    (flags&DUMP_DEVICE_WIFI_ONLY) != 0);
            pw.println();
        }
    }

    // This is called from BatteryStatsService.
    @SuppressWarnings("unused")
    public void dumpCheckinLocked(Context context, PrintWriter pw,
            List<ApplicationInfo> apps, int flags, long histStart) {
        prepareForDumpLocked();

        dumpLine(pw, 0 /* uid */, "i" /* category */, VERSION_DATA,
                CHECKIN_VERSION, getParcelVersion(), getStartPlatformVersion(),
                getEndPlatformVersion());

        long now = getHistoryBaseTime() + SystemClock.elapsedRealtime();

        if ((flags & (DUMP_INCLUDE_HISTORY | DUMP_HISTORY_ONLY)) != 0) {
            if (startIteratingHistoryLocked()) {
                try {
                    for (int i=0; i<getHistoryStringPoolSize(); i++) {
                        pw.print(BATTERY_STATS_CHECKIN_VERSION); pw.print(',');
                        pw.print(HISTORY_STRING_POOL); pw.print(',');
                        pw.print(i);
                        pw.print(",");
                        pw.print(getHistoryTagPoolUid(i));
                        pw.print(",\"");
                        String str = getHistoryTagPoolString(i);
                        str = str.replace("\\", "\\\\");
                        str = str.replace("\"", "\\\"");
                        pw.print(str);
                        pw.print("\"");
                        pw.println();
                    }
                    dumpHistoryLocked(pw, flags, histStart, true);
                } finally {
                    finishIteratingHistoryLocked();
                }
            }
        }

        if ((flags & DUMP_HISTORY_ONLY) != 0) {
            return;
        }

        if (apps != null) {
            SparseArray<Pair<ArrayList<String>, MutableBoolean>> uids = new SparseArray<>();
            for (int i=0; i<apps.size(); i++) {
                ApplicationInfo ai = apps.get(i);
                Pair<ArrayList<String>, MutableBoolean> pkgs = uids.get(
                        UserHandle.getAppId(ai.uid));
                if (pkgs == null) {
                    pkgs = new Pair<>(new ArrayList<String>(), new MutableBoolean(false));
                    uids.put(UserHandle.getAppId(ai.uid), pkgs);
                }
                pkgs.first.add(ai.packageName);
            }
            SparseArray<? extends Uid> uidStats = getUidStats();
            final int NU = uidStats.size();
            String[] lineArgs = new String[2];
            for (int i=0; i<NU; i++) {
                int uid = UserHandle.getAppId(uidStats.keyAt(i));
                Pair<ArrayList<String>, MutableBoolean> pkgs = uids.get(uid);
                if (pkgs != null && !pkgs.second.value) {
                    pkgs.second.value = true;
                    for (int j=0; j<pkgs.first.size(); j++) {
                        lineArgs[0] = Integer.toString(uid);
                        lineArgs[1] = pkgs.first.get(j);
                        dumpLine(pw, 0 /* uid */, "i" /* category */, UID_DATA,
                                (Object[])lineArgs);
                    }
                }
            }
        }
        if ((flags & DUMP_DAILY_ONLY) == 0) {
            dumpDurationSteps(pw, "", DISCHARGE_STEP_DATA, getDischargeLevelStepTracker(), true);
            String[] lineArgs = new String[1];
            long timeRemaining = computeBatteryTimeRemaining(SystemClock.elapsedRealtime() * 1000);
            if (timeRemaining >= 0) {
                lineArgs[0] = Long.toString(timeRemaining);
                dumpLine(pw, 0 /* uid */, "i" /* category */, DISCHARGE_TIME_REMAIN_DATA,
                        (Object[])lineArgs);
            }
            dumpDurationSteps(pw, "", CHARGE_STEP_DATA, getChargeLevelStepTracker(), true);
            timeRemaining = computeChargeTimeRemaining(SystemClock.elapsedRealtime() * 1000);
            if (timeRemaining >= 0) {
                lineArgs[0] = Long.toString(timeRemaining);
                dumpLine(pw, 0 /* uid */, "i" /* category */, CHARGE_TIME_REMAIN_DATA,
                        (Object[])lineArgs);
            }
            dumpCheckinLocked(context, pw, STATS_SINCE_CHARGED, -1,
                    (flags&DUMP_DEVICE_WIFI_ONLY) != 0);
        }
    }

    
Dump #STATS_SINCE_CHARGED batterystats data to a proto. If the flags include
DUMP_INCLUDE_HISTORY or DUMP_HISTORY_ONLY, only the history will be dumped.
@hide
/**
     * Dump #STATS_SINCE_CHARGED batterystats data to a proto. If the flags include
     * DUMP_INCLUDE_HISTORY or DUMP_HISTORY_ONLY, only the history will be dumped.
     * @hide
     */
    public void dumpProtoLocked(Context context, FileDescriptor fd, List<ApplicationInfo> apps,
            int flags, long histStart) {
        final ProtoOutputStream proto = new ProtoOutputStream(fd);
        prepareForDumpLocked();

        if ((flags & (DUMP_INCLUDE_HISTORY | DUMP_HISTORY_ONLY)) != 0) {
            dumpProtoHistoryLocked(proto, flags, histStart);
            proto.flush();
            return;
        }

        final long bToken = proto.start(BatteryStatsServiceDumpProto.BATTERYSTATS);

        proto.write(BatteryStatsProto.REPORT_VERSION, CHECKIN_VERSION);
        proto.write(BatteryStatsProto.PARCEL_VERSION, getParcelVersion());
        proto.write(BatteryStatsProto.START_PLATFORM_VERSION, getStartPlatformVersion());
        proto.write(BatteryStatsProto.END_PLATFORM_VERSION, getEndPlatformVersion());

        if ((flags & DUMP_DAILY_ONLY) == 0) {
            final BatteryStatsHelper helper = new BatteryStatsHelper(context, false,
                    (flags & DUMP_DEVICE_WIFI_ONLY) != 0);
            helper.create(this);
            helper.refreshStats(STATS_SINCE_CHARGED, UserHandle.USER_ALL);

            dumpProtoAppsLocked(proto, helper, apps);
            dumpProtoSystemLocked(proto, helper);
        }

        proto.end(bToken);
        proto.flush();
    }

    private void dumpProtoAppsLocked(ProtoOutputStream proto, BatteryStatsHelper helper,
            List<ApplicationInfo> apps) {
        final int which = STATS_SINCE_CHARGED;
        final long rawUptimeUs = SystemClock.uptimeMillis() * 1000;
        final long rawRealtimeMs = SystemClock.elapsedRealtime();
        final long rawRealtimeUs = rawRealtimeMs * 1000;
        final long batteryUptimeUs = getBatteryUptime(rawUptimeUs);

        SparseArray<ArrayList<String>> aidToPackages = new SparseArray<>();
        if (apps != null) {
            for (int i = 0; i < apps.size(); ++i) {
                ApplicationInfo ai = apps.get(i);
                int aid = UserHandle.getAppId(ai.uid);
                ArrayList<String> pkgs = aidToPackages.get(aid);
                if (pkgs == null) {
                    pkgs = new ArrayList<String>();
                    aidToPackages.put(aid, pkgs);
                }
                pkgs.add(ai.packageName);
            }
        }

        SparseArray<BatterySipper> uidToSipper = new SparseArray<>();
        final List<BatterySipper> sippers = helper.getUsageList();
        if (sippers != null) {
            for (int i = 0; i < sippers.size(); ++i) {
                final BatterySipper bs = sippers.get(i);
                if (bs.drainType != BatterySipper.DrainType.APP) {
                    // Others are handled by dumpProtoSystemLocked()
                    continue;
                }
                uidToSipper.put(bs.uidObj.getUid(), bs);
            }
        }

        SparseArray<? extends Uid> uidStats = getUidStats();
        final int n = uidStats.size();
        for (int iu = 0; iu < n; ++iu) {
            final long uTkn = proto.start(BatteryStatsProto.UIDS);
            final Uid u = uidStats.valueAt(iu);

            final int uid = uidStats.keyAt(iu);
            proto.write(UidProto.UID, uid);

            // Print packages and apk stats (UID_DATA & APK_DATA)
            ArrayList<String> pkgs = aidToPackages.get(UserHandle.getAppId(uid));
            if (pkgs == null) {
                pkgs = new ArrayList<String>();
            }
            final ArrayMap<String, ? extends BatteryStats.Uid.Pkg> packageStats =
                    u.getPackageStats();
            for (int ipkg = packageStats.size() - 1; ipkg >= 0; --ipkg) {
                String pkg = packageStats.keyAt(ipkg);
                final ArrayMap<String, ? extends  Uid.Pkg.Serv> serviceStats =
                        packageStats.valueAt(ipkg).getServiceStats();
                if (serviceStats.size() == 0) {
                    // Due to the way ActivityManagerService logs wakeup alarms, some packages (for
                    // example, "android") may be included in the packageStats that aren't part of
                    // the UID. If they don't have any services, then they shouldn't be listed here.
                    // These packages won't be a part in the pkgs List.
                    continue;
                }

                final long pToken = proto.start(UidProto.PACKAGES);
                proto.write(UidProto.Package.NAME, pkg);
                // Remove from the packages list since we're logging it here.
                pkgs.remove(pkg);

                for (int isvc = serviceStats.size() - 1; isvc >= 0; --isvc) {
                    final BatteryStats.Uid.Pkg.Serv ss = serviceStats.valueAt(isvc);

                    final long startTimeMs = roundUsToMs(ss.getStartTime(batteryUptimeUs, which));
                    final int starts = ss.getStarts(which);
                    final int launches = ss.getLaunches(which);
                    if (startTimeMs == 0 && starts == 0 && launches == 0) {
                        continue;
                    }

                    long sToken = proto.start(UidProto.Package.SERVICES);

                    proto.write(UidProto.Package.Service.NAME, serviceStats.keyAt(isvc));
                    proto.write(UidProto.Package.Service.START_DURATION_MS, startTimeMs);
                    proto.write(UidProto.Package.Service.START_COUNT, starts);
                    proto.write(UidProto.Package.Service.LAUNCH_COUNT, launches);

                    proto.end(sToken);
                }
                proto.end(pToken);
            }
            // Print any remaining packages that weren't in the packageStats map. pkgs is pulled
            // from PackageManager data. Packages are only included in packageStats if there was
            // specific data tracked for them (services and wakeup alarms, etc.).
            for (String p : pkgs) {
                final long pToken = proto.start(UidProto.PACKAGES);
                proto.write(UidProto.Package.NAME, p);
                proto.end(pToken);
            }

            // Total wakelock data (AGGREGATED_WAKELOCK_DATA)
            if (u.getAggregatedPartialWakelockTimer() != null) {
                final Timer timer = u.getAggregatedPartialWakelockTimer();
                // Times are since reset (regardless of 'which')
                final long totTimeMs = timer.getTotalDurationMsLocked(rawRealtimeMs);
                final Timer bgTimer = timer.getSubTimer();
                final long bgTimeMs = bgTimer != null
                        ? bgTimer.getTotalDurationMsLocked(rawRealtimeMs) : 0;
                final long awToken = proto.start(UidProto.AGGREGATED_WAKELOCK);
                proto.write(UidProto.AggregatedWakelock.PARTIAL_DURATION_MS, totTimeMs);
                proto.write(UidProto.AggregatedWakelock.BACKGROUND_PARTIAL_DURATION_MS, bgTimeMs);
                proto.end(awToken);
            }

            // Audio (AUDIO_DATA)
            dumpTimer(proto, UidProto.AUDIO, u.getAudioTurnedOnTimer(), rawRealtimeUs, which);

            // Bluetooth Controller (BLUETOOTH_CONTROLLER_DATA)
            dumpControllerActivityProto(proto, UidProto.BLUETOOTH_CONTROLLER,
                    u.getBluetoothControllerActivity(), which);

            // BLE scans (BLUETOOTH_MISC_DATA) (uses totalDurationMsLocked and MaxDurationMsLocked)
            final Timer bleTimer = u.getBluetoothScanTimer();
            if (bleTimer != null) {
                final long bmToken = proto.start(UidProto.BLUETOOTH_MISC);

                dumpTimer(proto, UidProto.BluetoothMisc.APPORTIONED_BLE_SCAN, bleTimer,
                        rawRealtimeUs, which);
                dumpTimer(proto, UidProto.BluetoothMisc.BACKGROUND_BLE_SCAN,
                        u.getBluetoothScanBackgroundTimer(), rawRealtimeUs, which);
                // Unoptimized scan timer. Unpooled and since reset (regardless of 'which').
                dumpTimer(proto, UidProto.BluetoothMisc.UNOPTIMIZED_BLE_SCAN,
                        u.getBluetoothUnoptimizedScanTimer(), rawRealtimeUs, which);
                // Unoptimized bg scan timer. Unpooled and since reset (regardless of 'which').
                dumpTimer(proto, UidProto.BluetoothMisc.BACKGROUND_UNOPTIMIZED_BLE_SCAN,
                        u.getBluetoothUnoptimizedScanBackgroundTimer(), rawRealtimeUs, which);
                // Result counters
                proto.write(UidProto.BluetoothMisc.BLE_SCAN_RESULT_COUNT,
                        u.getBluetoothScanResultCounter() != null
                            ? u.getBluetoothScanResultCounter().getCountLocked(which) : 0);
                proto.write(UidProto.BluetoothMisc.BACKGROUND_BLE_SCAN_RESULT_COUNT,
                        u.getBluetoothScanResultBgCounter() != null
                            ? u.getBluetoothScanResultBgCounter().getCountLocked(which) : 0);

                proto.end(bmToken);
            }

            // Camera (CAMERA_DATA)
            dumpTimer(proto, UidProto.CAMERA, u.getCameraTurnedOnTimer(), rawRealtimeUs, which);

            // CPU stats (CPU_DATA & CPU_TIMES_AT_FREQ_DATA)
            final long cpuToken = proto.start(UidProto.CPU);
            proto.write(UidProto.Cpu.USER_DURATION_MS, roundUsToMs(u.getUserCpuTimeUs(which)));
            proto.write(UidProto.Cpu.SYSTEM_DURATION_MS, roundUsToMs(u.getSystemCpuTimeUs(which)));

            final long[] cpuFreqs = getCpuFreqs();
            if (cpuFreqs != null) {
                final long[] cpuFreqTimeMs = u.getCpuFreqTimes(which);
                // If total cpuFreqTimes is null, then we don't need to check for
                // screenOffCpuFreqTimes.
                if (cpuFreqTimeMs != null && cpuFreqTimeMs.length == cpuFreqs.length) {
                    long[] screenOffCpuFreqTimeMs = u.getScreenOffCpuFreqTimes(which);
                    if (screenOffCpuFreqTimeMs == null) {
                        screenOffCpuFreqTimeMs = new long[cpuFreqTimeMs.length];
                    }
                    for (int ic = 0; ic < cpuFreqTimeMs.length; ++ic) {
                        long cToken = proto.start(UidProto.Cpu.BY_FREQUENCY);
                        proto.write(UidProto.Cpu.ByFrequency.FREQUENCY_INDEX, ic + 1);
                        proto.write(UidProto.Cpu.ByFrequency.TOTAL_DURATION_MS,
                                cpuFreqTimeMs[ic]);
                        proto.write(UidProto.Cpu.ByFrequency.SCREEN_OFF_DURATION_MS,
                                screenOffCpuFreqTimeMs[ic]);
                        proto.end(cToken);
                    }
                }
            }

            for (int procState = 0; procState < Uid.NUM_PROCESS_STATE; ++procState) {
                final long[] timesMs = u.getCpuFreqTimes(which, procState);
                if (timesMs != null && timesMs.length == cpuFreqs.length) {
                    long[] screenOffTimesMs = u.getScreenOffCpuFreqTimes(which, procState);
                    if (screenOffTimesMs == null) {
                        screenOffTimesMs = new long[timesMs.length];
                    }
                    final long procToken = proto.start(UidProto.Cpu.BY_PROCESS_STATE);
                    proto.write(UidProto.Cpu.ByProcessState.PROCESS_STATE, procState);
                    for (int ic = 0; ic < timesMs.length; ++ic) {
                        long cToken = proto.start(UidProto.Cpu.ByProcessState.BY_FREQUENCY);
                        proto.write(UidProto.Cpu.ByFrequency.FREQUENCY_INDEX, ic + 1);
                        proto.write(UidProto.Cpu.ByFrequency.TOTAL_DURATION_MS,
                                timesMs[ic]);
                        proto.write(UidProto.Cpu.ByFrequency.SCREEN_OFF_DURATION_MS,
                                screenOffTimesMs[ic]);
                        proto.end(cToken);
                    }
                    proto.end(procToken);
                }
            }
            proto.end(cpuToken);

            // Flashlight (FLASHLIGHT_DATA)
            dumpTimer(proto, UidProto.FLASHLIGHT, u.getFlashlightTurnedOnTimer(),
                    rawRealtimeUs, which);

            // Foreground activity (FOREGROUND_ACTIVITY_DATA)
            dumpTimer(proto, UidProto.FOREGROUND_ACTIVITY, u.getForegroundActivityTimer(),
                    rawRealtimeUs, which);

            // Foreground service (FOREGROUND_SERVICE_DATA)
            dumpTimer(proto, UidProto.FOREGROUND_SERVICE, u.getForegroundServiceTimer(),
                    rawRealtimeUs, which);

            // Job completion (JOB_COMPLETION_DATA)
            final ArrayMap<String, SparseIntArray> completions = u.getJobCompletionStats();
            final int[] reasons = new int[]{
                JobParameters.REASON_CANCELED,
                JobParameters.REASON_CONSTRAINTS_NOT_SATISFIED,
                JobParameters.REASON_PREEMPT,
                JobParameters.REASON_TIMEOUT,
                JobParameters.REASON_DEVICE_IDLE,
            };
            for (int ic = 0; ic < completions.size(); ++ic) {
                SparseIntArray types = completions.valueAt(ic);
                if (types != null) {
                    final long jcToken = proto.start(UidProto.JOB_COMPLETION);

                    proto.write(UidProto.JobCompletion.NAME, completions.keyAt(ic));

                    for (int r : reasons) {
                        long rToken = proto.start(UidProto.JobCompletion.REASON_COUNT);
                        proto.write(UidProto.JobCompletion.ReasonCount.NAME, r);
                        proto.write(UidProto.JobCompletion.ReasonCount.COUNT, types.get(r, 0));
                        proto.end(rToken);
                    }

                    proto.end(jcToken);
                }
            }

            // Scheduled jobs (JOB_DATA)
            final ArrayMap<String, ? extends Timer> jobs = u.getJobStats();
            for (int ij = jobs.size() - 1; ij >= 0; --ij) {
                final Timer timer = jobs.valueAt(ij);
                final Timer bgTimer = timer.getSubTimer();
                final long jToken = proto.start(UidProto.JOBS);

                proto.write(UidProto.Job.NAME, jobs.keyAt(ij));
                // Background uses totalDurationMsLocked, while total uses totalTimeLocked
                dumpTimer(proto, UidProto.Job.TOTAL, timer, rawRealtimeUs, which);
                dumpTimer(proto, UidProto.Job.BACKGROUND, bgTimer, rawRealtimeUs, which);

                proto.end(jToken);
            }

            // Modem Controller (MODEM_CONTROLLER_DATA)
            dumpControllerActivityProto(proto, UidProto.MODEM_CONTROLLER,
                    u.getModemControllerActivity(), which);

            // Network stats (NETWORK_DATA)
            final long nToken = proto.start(UidProto.NETWORK);
            proto.write(UidProto.Network.MOBILE_BYTES_RX,
                    u.getNetworkActivityBytes(NETWORK_MOBILE_RX_DATA, which));
            proto.write(UidProto.Network.MOBILE_BYTES_TX,
                    u.getNetworkActivityBytes(NETWORK_MOBILE_TX_DATA, which));
            proto.write(UidProto.Network.WIFI_BYTES_RX,
                    u.getNetworkActivityBytes(NETWORK_WIFI_RX_DATA, which));
            proto.write(UidProto.Network.WIFI_BYTES_TX,
                    u.getNetworkActivityBytes(NETWORK_WIFI_TX_DATA, which));
            proto.write(UidProto.Network.BT_BYTES_RX,
                    u.getNetworkActivityBytes(NETWORK_BT_RX_DATA, which));
            proto.write(UidProto.Network.BT_BYTES_TX,
                    u.getNetworkActivityBytes(NETWORK_BT_TX_DATA, which));
            proto.write(UidProto.Network.MOBILE_PACKETS_RX,
                    u.getNetworkActivityPackets(NETWORK_MOBILE_RX_DATA, which));
            proto.write(UidProto.Network.MOBILE_PACKETS_TX,
                    u.getNetworkActivityPackets(NETWORK_MOBILE_TX_DATA, which));
            proto.write(UidProto.Network.WIFI_PACKETS_RX,
                    u.getNetworkActivityPackets(NETWORK_WIFI_RX_DATA, which));
            proto.write(UidProto.Network.WIFI_PACKETS_TX,
                    u.getNetworkActivityPackets(NETWORK_WIFI_TX_DATA, which));
            proto.write(UidProto.Network.MOBILE_ACTIVE_DURATION_MS,
                    roundUsToMs(u.getMobileRadioActiveTime(which)));
            proto.write(UidProto.Network.MOBILE_ACTIVE_COUNT,
                    u.getMobileRadioActiveCount(which));
            proto.write(UidProto.Network.MOBILE_WAKEUP_COUNT,
                    u.getMobileRadioApWakeupCount(which));
            proto.write(UidProto.Network.WIFI_WAKEUP_COUNT,
                    u.getWifiRadioApWakeupCount(which));
            proto.write(UidProto.Network.MOBILE_BYTES_BG_RX,
                    u.getNetworkActivityBytes(NETWORK_MOBILE_BG_RX_DATA, which));
            proto.write(UidProto.Network.MOBILE_BYTES_BG_TX,
                    u.getNetworkActivityBytes(NETWORK_MOBILE_BG_TX_DATA, which));
            proto.write(UidProto.Network.WIFI_BYTES_BG_RX,
                    u.getNetworkActivityBytes(NETWORK_WIFI_BG_RX_DATA, which));
            proto.write(UidProto.Network.WIFI_BYTES_BG_TX,
                    u.getNetworkActivityBytes(NETWORK_WIFI_BG_TX_DATA, which));
            proto.write(UidProto.Network.MOBILE_PACKETS_BG_RX,
                    u.getNetworkActivityPackets(NETWORK_MOBILE_BG_RX_DATA, which));
            proto.write(UidProto.Network.MOBILE_PACKETS_BG_TX,
                    u.getNetworkActivityPackets(NETWORK_MOBILE_BG_TX_DATA, which));
            proto.write(UidProto.Network.WIFI_PACKETS_BG_RX,
                    u.getNetworkActivityPackets(NETWORK_WIFI_BG_RX_DATA, which));
            proto.write(UidProto.Network.WIFI_PACKETS_BG_TX,
                    u.getNetworkActivityPackets(NETWORK_WIFI_BG_TX_DATA, which));
            proto.end(nToken);

            // Power use item (POWER_USE_ITEM_DATA)
            BatterySipper bs = uidToSipper.get(uid);
            if (bs != null) {
                final long bsToken = proto.start(UidProto.POWER_USE_ITEM);
                proto.write(UidProto.PowerUseItem.COMPUTED_POWER_MAH, bs.totalPowerMah);
                proto.write(UidProto.PowerUseItem.SHOULD_HIDE, bs.shouldHide);
                proto.write(UidProto.PowerUseItem.SCREEN_POWER_MAH, bs.screenPowerMah);
                proto.write(UidProto.PowerUseItem.PROPORTIONAL_SMEAR_MAH,
                        bs.proportionalSmearMah);
                proto.end(bsToken);
            }

            // Processes (PROCESS_DATA)
            final ArrayMap<String, ? extends BatteryStats.Uid.Proc> processStats =
                    u.getProcessStats();
            for (int ipr = processStats.size() - 1; ipr >= 0; --ipr) {
                final Uid.Proc ps = processStats.valueAt(ipr);
                final long prToken = proto.start(UidProto.PROCESS);

                proto.write(UidProto.Process.NAME, processStats.keyAt(ipr));
                proto.write(UidProto.Process.USER_DURATION_MS, ps.getUserTime(which));
                proto.write(UidProto.Process.SYSTEM_DURATION_MS, ps.getSystemTime(which));
                proto.write(UidProto.Process.FOREGROUND_DURATION_MS, ps.getForegroundTime(which));
                proto.write(UidProto.Process.START_COUNT, ps.getStarts(which));
                proto.write(UidProto.Process.ANR_COUNT, ps.getNumAnrs(which));
                proto.write(UidProto.Process.CRASH_COUNT, ps.getNumCrashes(which));

                proto.end(prToken);
            }

            // Sensors (SENSOR_DATA)
            final SparseArray<? extends BatteryStats.Uid.Sensor> sensors = u.getSensorStats();
            for (int ise = 0; ise < sensors.size(); ++ise) {
                final Uid.Sensor se = sensors.valueAt(ise);
                final Timer timer = se.getSensorTime();
                if (timer == null) {
                    continue;
                }
                final Timer bgTimer = se.getSensorBackgroundTime();
                final int sensorNumber = sensors.keyAt(ise);
                final long seToken = proto.start(UidProto.SENSORS);

                proto.write(UidProto.Sensor.ID, sensorNumber);
                // Background uses totalDurationMsLocked, while total uses totalTimeLocked
                dumpTimer(proto, UidProto.Sensor.APPORTIONED, timer, rawRealtimeUs, which);
                dumpTimer(proto, UidProto.Sensor.BACKGROUND, bgTimer, rawRealtimeUs, which);

                proto.end(seToken);
            }

            // State times (STATE_TIME_DATA)
            for (int ips = 0; ips < Uid.NUM_PROCESS_STATE; ++ips) {
                long durMs = roundUsToMs(u.getProcessStateTime(ips, rawRealtimeUs, which));
                if (durMs == 0) {
                    continue;
                }
                final long stToken = proto.start(UidProto.STATES);
                proto.write(UidProto.StateTime.STATE, ips);
                proto.write(UidProto.StateTime.DURATION_MS, durMs);
                proto.end(stToken);
            }

            // Syncs (SYNC_DATA)
            final ArrayMap<String, ? extends Timer> syncs = u.getSyncStats();
            for (int isy = syncs.size() - 1; isy >= 0; --isy) {
                final Timer timer = syncs.valueAt(isy);
                final Timer bgTimer = timer.getSubTimer();
                final long syToken = proto.start(UidProto.SYNCS);

                proto.write(UidProto.Sync.NAME, syncs.keyAt(isy));
                // Background uses totalDurationMsLocked, while total uses totalTimeLocked
                dumpTimer(proto, UidProto.Sync.TOTAL, timer, rawRealtimeUs, which);
                dumpTimer(proto, UidProto.Sync.BACKGROUND, bgTimer, rawRealtimeUs, which);

                proto.end(syToken);
            }

            // User activity (USER_ACTIVITY_DATA)
            if (u.hasUserActivity()) {
                for (int i = 0; i < Uid.NUM_USER_ACTIVITY_TYPES; ++i) {
                    int val = u.getUserActivityCount(i, which);
                    if (val != 0) {
                        final long uaToken = proto.start(UidProto.USER_ACTIVITY);
                        proto.write(UidProto.UserActivity.NAME, i);
                        proto.write(UidProto.UserActivity.COUNT, val);
                        proto.end(uaToken);
                    }
                }
            }

            // Vibrator (VIBRATOR_DATA)
            dumpTimer(proto, UidProto.VIBRATOR, u.getVibratorOnTimer(), rawRealtimeUs, which);

            // Video (VIDEO_DATA)
            dumpTimer(proto, UidProto.VIDEO, u.getVideoTurnedOnTimer(), rawRealtimeUs, which);

            // Wakelocks (WAKELOCK_DATA)
            final ArrayMap<String, ? extends Uid.Wakelock> wakelocks = u.getWakelockStats();
            for (int iw = wakelocks.size() - 1; iw >= 0; --iw) {
                final Uid.Wakelock wl = wakelocks.valueAt(iw);
                final long wToken = proto.start(UidProto.WAKELOCKS);
                proto.write(UidProto.Wakelock.NAME, wakelocks.keyAt(iw));
                dumpTimer(proto, UidProto.Wakelock.FULL, wl.getWakeTime(WAKE_TYPE_FULL),
                        rawRealtimeUs, which);
                final Timer pTimer = wl.getWakeTime(WAKE_TYPE_PARTIAL);
                if (pTimer != null) {
                    dumpTimer(proto, UidProto.Wakelock.PARTIAL, pTimer, rawRealtimeUs, which);
                    dumpTimer(proto, UidProto.Wakelock.BACKGROUND_PARTIAL, pTimer.getSubTimer(),
                            rawRealtimeUs, which);
                }
                dumpTimer(proto, UidProto.Wakelock.WINDOW, wl.getWakeTime(WAKE_TYPE_WINDOW),
                        rawRealtimeUs, which);
                proto.end(wToken);
            }

            // Wifi Multicast Wakelock (WIFI_MULTICAST_WAKELOCK_DATA)
            dumpTimer(proto, UidProto.WIFI_MULTICAST_WAKELOCK, u.getMulticastWakelockStats(),
                    rawRealtimeUs, which);

            // Wakeup alarms (WAKEUP_ALARM_DATA)
            for (int ipkg = packageStats.size() - 1; ipkg >= 0; --ipkg) {
                final Uid.Pkg ps = packageStats.valueAt(ipkg);
                final ArrayMap<String, ? extends Counter> alarms = ps.getWakeupAlarmStats();
                for (int iwa = alarms.size() - 1; iwa >= 0; --iwa) {
                    final long waToken = proto.start(UidProto.WAKEUP_ALARM);
                    proto.write(UidProto.WakeupAlarm.NAME, alarms.keyAt(iwa));
                    proto.write(UidProto.WakeupAlarm.COUNT,
                            alarms.valueAt(iwa).getCountLocked(which));
                    proto.end(waToken);
                }
            }

            // Wifi Controller (WIFI_CONTROLLER_DATA)
            dumpControllerActivityProto(proto, UidProto.WIFI_CONTROLLER,
                    u.getWifiControllerActivity(), which);

            // Wifi data (WIFI_DATA)
            final long wToken = proto.start(UidProto.WIFI);
            proto.write(UidProto.Wifi.FULL_WIFI_LOCK_DURATION_MS,
                    roundUsToMs(u.getFullWifiLockTime(rawRealtimeUs, which)));
            dumpTimer(proto, UidProto.Wifi.APPORTIONED_SCAN, u.getWifiScanTimer(),
                    rawRealtimeUs, which);
            proto.write(UidProto.Wifi.RUNNING_DURATION_MS,
                    roundUsToMs(u.getWifiRunningTime(rawRealtimeUs, which)));
            dumpTimer(proto, UidProto.Wifi.BACKGROUND_SCAN, u.getWifiScanBackgroundTimer(),
                    rawRealtimeUs, which);
            proto.end(wToken);

            proto.end(uTkn);
        }
    }

    private void dumpProtoHistoryLocked(ProtoOutputStream proto, int flags, long histStart) {
        if (!startIteratingHistoryLocked()) {
            return;
        }

        proto.write(BatteryStatsServiceDumpHistoryProto.REPORT_VERSION, CHECKIN_VERSION);
        proto.write(BatteryStatsServiceDumpHistoryProto.PARCEL_VERSION, getParcelVersion());
        proto.write(BatteryStatsServiceDumpHistoryProto.START_PLATFORM_VERSION,
                getStartPlatformVersion());
        proto.write(BatteryStatsServiceDumpHistoryProto.END_PLATFORM_VERSION,
                getEndPlatformVersion());
        try {
            long token;
            // History string pool (HISTORY_STRING_POOL)
            for (int i = 0; i < getHistoryStringPoolSize(); ++i) {
                token = proto.start(BatteryStatsServiceDumpHistoryProto.KEYS);
                proto.write(BatteryStatsServiceDumpHistoryProto.Key.INDEX, i);
                proto.write(BatteryStatsServiceDumpHistoryProto.Key.UID, getHistoryTagPoolUid(i));
                proto.write(BatteryStatsServiceDumpHistoryProto.Key.TAG,
                        getHistoryTagPoolString(i));
                proto.end(token);
            }

            // History data (HISTORY_DATA)
            final HistoryPrinter hprinter = new HistoryPrinter();
            final HistoryItem rec = new HistoryItem();
            long lastTime = -1;
            long baseTime = -1;
            boolean printed = false;
            HistoryEventTracker tracker = null;
            while (getNextHistoryLocked(rec)) {
                lastTime = rec.time;
                if (baseTime < 0) {
                    baseTime = lastTime;
                }
                if (rec.time >= histStart) {
                    if (histStart >= 0 && !printed) {
                        if (rec.cmd == HistoryItem.CMD_CURRENT_TIME
                                || rec.cmd == HistoryItem.CMD_RESET
                                || rec.cmd == HistoryItem.CMD_START
                                || rec.cmd == HistoryItem.CMD_SHUTDOWN) {
                            printed = true;
                            hprinter.printNextItem(proto, rec, baseTime,
                                    (flags & DUMP_VERBOSE) != 0);
                            rec.cmd = HistoryItem.CMD_UPDATE;
                        } else if (rec.currentTime != 0) {
                            printed = true;
                            byte cmd = rec.cmd;
                            rec.cmd = HistoryItem.CMD_CURRENT_TIME;
                            hprinter.printNextItem(proto, rec, baseTime,
                                    (flags & DUMP_VERBOSE) != 0);
                            rec.cmd = cmd;
                        }
                        if (tracker != null) {
                            if (rec.cmd != HistoryItem.CMD_UPDATE) {
                                hprinter.printNextItem(proto, rec, baseTime,
                                        (flags & DUMP_VERBOSE) != 0);
                                rec.cmd = HistoryItem.CMD_UPDATE;
                            }
                            int oldEventCode = rec.eventCode;
                            HistoryTag oldEventTag = rec.eventTag;
                            rec.eventTag = new HistoryTag();
                            for (int i = 0; i < HistoryItem.EVENT_COUNT; i++) {
                                HashMap<String, SparseIntArray> active =
                                        tracker.getStateForEvent(i);
                                if (active == null) {
                                    continue;
                                }
                                for (HashMap.Entry<String, SparseIntArray> ent
                                        : active.entrySet()) {
                                    SparseIntArray uids = ent.getValue();
                                    for (int j = 0; j < uids.size(); j++) {
                                        rec.eventCode = i;
                                        rec.eventTag.string = ent.getKey();
                                        rec.eventTag.uid = uids.keyAt(j);
                                        rec.eventTag.poolIdx = uids.valueAt(j);
                                        hprinter.printNextItem(proto, rec, baseTime,
                                                (flags & DUMP_VERBOSE) != 0);
                                        rec.wakeReasonTag = null;
                                        rec.wakelockTag = null;
                                    }
                                }
                            }
                            rec.eventCode = oldEventCode;
                            rec.eventTag = oldEventTag;
                            tracker = null;
                        }
                    }
                    hprinter.printNextItem(proto, rec, baseTime,
                            (flags & DUMP_VERBOSE) != 0);
                }
            }
            if (histStart >= 0) {
                commitCurrentHistoryBatchLocked();
                proto.write(BatteryStatsServiceDumpHistoryProto.CSV_LINES,
                        "NEXT: " + (lastTime + 1));
            }
        } finally {
            finishIteratingHistoryLocked();
        }
    }

    private void dumpProtoSystemLocked(ProtoOutputStream proto, BatteryStatsHelper helper) {
        final long sToken = proto.start(BatteryStatsProto.SYSTEM);
        final long rawUptimeUs = SystemClock.uptimeMillis() * 1000;
        final long rawRealtimeMs = SystemClock.elapsedRealtime();
        final long rawRealtimeUs = rawRealtimeMs * 1000;
        final int which = STATS_SINCE_CHARGED;

        // Battery data (BATTERY_DATA)
        final long bToken = proto.start(SystemProto.BATTERY);
        proto.write(SystemProto.Battery.START_CLOCK_TIME_MS, getStartClockTime());
        proto.write(SystemProto.Battery.START_COUNT, getStartCount());
        proto.write(SystemProto.Battery.TOTAL_REALTIME_MS,
                computeRealtime(rawRealtimeUs, which) / 1000);
        proto.write(SystemProto.Battery.TOTAL_UPTIME_MS,
                computeUptime(rawUptimeUs, which) / 1000);
        proto.write(SystemProto.Battery.BATTERY_REALTIME_MS,
                computeBatteryRealtime(rawRealtimeUs, which) / 1000);
        proto.write(SystemProto.Battery.BATTERY_UPTIME_MS,
                computeBatteryUptime(rawUptimeUs, which) / 1000);
        proto.write(SystemProto.Battery.SCREEN_OFF_REALTIME_MS,
                computeBatteryScreenOffRealtime(rawRealtimeUs, which) / 1000);
        proto.write(SystemProto.Battery.SCREEN_OFF_UPTIME_MS,
                computeBatteryScreenOffUptime(rawUptimeUs, which) / 1000);
        proto.write(SystemProto.Battery.SCREEN_DOZE_DURATION_MS,
                getScreenDozeTime(rawRealtimeUs, which) / 1000);
        proto.write(SystemProto.Battery.ESTIMATED_BATTERY_CAPACITY_MAH,
                getEstimatedBatteryCapacity());
        proto.write(SystemProto.Battery.MIN_LEARNED_BATTERY_CAPACITY_UAH,
                getMinLearnedBatteryCapacity());
        proto.write(SystemProto.Battery.MAX_LEARNED_BATTERY_CAPACITY_UAH,
                getMaxLearnedBatteryCapacity());
        proto.end(bToken);

        // Battery discharge (BATTERY_DISCHARGE_DATA)
        final long bdToken = proto.start(SystemProto.BATTERY_DISCHARGE);
        proto.write(SystemProto.BatteryDischarge.LOWER_BOUND_SINCE_CHARGE,
                getLowDischargeAmountSinceCharge());
        proto.write(SystemProto.BatteryDischarge.UPPER_BOUND_SINCE_CHARGE,
                getHighDischargeAmountSinceCharge());
        proto.write(SystemProto.BatteryDischarge.SCREEN_ON_SINCE_CHARGE,
                getDischargeAmountScreenOnSinceCharge());
        proto.write(SystemProto.BatteryDischarge.SCREEN_OFF_SINCE_CHARGE,
                getDischargeAmountScreenOffSinceCharge());
        proto.write(SystemProto.BatteryDischarge.SCREEN_DOZE_SINCE_CHARGE,
                getDischargeAmountScreenDozeSinceCharge());
        proto.write(SystemProto.BatteryDischarge.TOTAL_MAH,
                getUahDischarge(which) / 1000);
        proto.write(SystemProto.BatteryDischarge.TOTAL_MAH_SCREEN_OFF,
                getUahDischargeScreenOff(which) / 1000);
        proto.write(SystemProto.BatteryDischarge.TOTAL_MAH_SCREEN_DOZE,
                getUahDischargeScreenDoze(which) / 1000);
        proto.write(SystemProto.BatteryDischarge.TOTAL_MAH_LIGHT_DOZE,
                getUahDischargeLightDoze(which) / 1000);
        proto.write(SystemProto.BatteryDischarge.TOTAL_MAH_DEEP_DOZE,
                getUahDischargeDeepDoze(which) / 1000);
        proto.end(bdToken);

        // Time remaining
        long timeRemainingUs = computeChargeTimeRemaining(rawRealtimeUs);
        // These are part of a oneof, so we should only set one of them.
        if (timeRemainingUs >= 0) {
            // Charge time remaining (CHARGE_TIME_REMAIN_DATA)
            proto.write(SystemProto.CHARGE_TIME_REMAINING_MS, timeRemainingUs / 1000);
        } else {
            timeRemainingUs = computeBatteryTimeRemaining(rawRealtimeUs);
            // Discharge time remaining (DISCHARGE_TIME_REMAIN_DATA)
            if (timeRemainingUs >= 0) {
                proto.write(SystemProto.DISCHARGE_TIME_REMAINING_MS, timeRemainingUs / 1000);
            } else {
                proto.write(SystemProto.DISCHARGE_TIME_REMAINING_MS, -1);
            }
        }

        // Charge step (CHARGE_STEP_DATA)
        dumpDurationSteps(proto, SystemProto.CHARGE_STEP, getChargeLevelStepTracker());

        // Phone data connection (DATA_CONNECTION_TIME_DATA and DATA_CONNECTION_COUNT_DATA)
        for (int i = 0; i < NUM_DATA_CONNECTION_TYPES; ++i) {
            // Map OTHER to TelephonyManager.NETWORK_TYPE_UNKNOWN and mark NONE as a boolean.
            boolean isNone = (i == DATA_CONNECTION_NONE);
            int telephonyNetworkType = i;
            if (i == DATA_CONNECTION_OTHER) {
                telephonyNetworkType = TelephonyManager.NETWORK_TYPE_UNKNOWN;
            }
            final long pdcToken = proto.start(SystemProto.DATA_CONNECTION);
            if (isNone) {
                proto.write(SystemProto.DataConnection.IS_NONE, isNone);
            } else {
                proto.write(SystemProto.DataConnection.NAME, telephonyNetworkType);
            }
            dumpTimer(proto, SystemProto.DataConnection.TOTAL, getPhoneDataConnectionTimer(i),
                    rawRealtimeUs, which);
            proto.end(pdcToken);
        }

        // Discharge step (DISCHARGE_STEP_DATA)
        dumpDurationSteps(proto, SystemProto.DISCHARGE_STEP, getDischargeLevelStepTracker());

        // CPU frequencies (GLOBAL_CPU_FREQ_DATA)
        final long[] cpuFreqs = getCpuFreqs();
        if (cpuFreqs != null) {
            for (long i : cpuFreqs) {
                proto.write(SystemProto.CPU_FREQUENCY, i);
            }
        }

        // Bluetooth controller (GLOBAL_BLUETOOTH_CONTROLLER_DATA)
        dumpControllerActivityProto(proto, SystemProto.GLOBAL_BLUETOOTH_CONTROLLER,
                getBluetoothControllerActivity(), which);

        // Modem controller (GLOBAL_MODEM_CONTROLLER_DATA)
        dumpControllerActivityProto(proto, SystemProto.GLOBAL_MODEM_CONTROLLER,
                getModemControllerActivity(), which);

        // Global network data (GLOBAL_NETWORK_DATA)
        final long gnToken = proto.start(SystemProto.GLOBAL_NETWORK);
        proto.write(SystemProto.GlobalNetwork.MOBILE_BYTES_RX,
                getNetworkActivityBytes(NETWORK_MOBILE_RX_DATA, which));
        proto.write(SystemProto.GlobalNetwork.MOBILE_BYTES_TX,
                getNetworkActivityBytes(NETWORK_MOBILE_TX_DATA, which));
        proto.write(SystemProto.GlobalNetwork.MOBILE_PACKETS_RX,
                getNetworkActivityPackets(NETWORK_MOBILE_RX_DATA, which));
        proto.write(SystemProto.GlobalNetwork.MOBILE_PACKETS_TX,
                getNetworkActivityPackets(NETWORK_MOBILE_TX_DATA, which));
        proto.write(SystemProto.GlobalNetwork.WIFI_BYTES_RX,
                getNetworkActivityBytes(NETWORK_WIFI_RX_DATA, which));
        proto.write(SystemProto.GlobalNetwork.WIFI_BYTES_TX,
                getNetworkActivityBytes(NETWORK_WIFI_TX_DATA, which));
        proto.write(SystemProto.GlobalNetwork.WIFI_PACKETS_RX,
                getNetworkActivityPackets(NETWORK_WIFI_RX_DATA, which));
        proto.write(SystemProto.GlobalNetwork.WIFI_PACKETS_TX,
                getNetworkActivityPackets(NETWORK_WIFI_TX_DATA, which));
        proto.write(SystemProto.GlobalNetwork.BT_BYTES_RX,
                getNetworkActivityBytes(NETWORK_BT_RX_DATA, which));
        proto.write(SystemProto.GlobalNetwork.BT_BYTES_TX,
                getNetworkActivityBytes(NETWORK_BT_TX_DATA, which));
        proto.end(gnToken);

        // Wifi controller (GLOBAL_WIFI_CONTROLLER_DATA)
        dumpControllerActivityProto(proto, SystemProto.GLOBAL_WIFI_CONTROLLER,
                getWifiControllerActivity(), which);


        // Global wifi (GLOBAL_WIFI_DATA)
        final long gwToken = proto.start(SystemProto.GLOBAL_WIFI);
        proto.write(SystemProto.GlobalWifi.ON_DURATION_MS,
                getWifiOnTime(rawRealtimeUs, which) / 1000);
        proto.write(SystemProto.GlobalWifi.RUNNING_DURATION_MS,
                getGlobalWifiRunningTime(rawRealtimeUs, which) / 1000);
        proto.end(gwToken);

        // Kernel wakelock (KERNEL_WAKELOCK_DATA)
        final Map<String, ? extends Timer> kernelWakelocks = getKernelWakelockStats();
        for (Map.Entry<String, ? extends Timer> ent : kernelWakelocks.entrySet()) {
            final long kwToken = proto.start(SystemProto.KERNEL_WAKELOCK);
            proto.write(SystemProto.KernelWakelock.NAME, ent.getKey());
            dumpTimer(proto, SystemProto.KernelWakelock.TOTAL, ent.getValue(),
                    rawRealtimeUs, which);
            proto.end(kwToken);
        }

        // Misc (MISC_DATA)
        // Calculate wakelock times across all uids.
        long fullWakeLockTimeTotalUs = 0;
        long partialWakeLockTimeTotalUs = 0;

        final SparseArray<? extends Uid> uidStats = getUidStats();
        for (int iu = 0; iu < uidStats.size(); iu++) {
            final Uid u = uidStats.valueAt(iu);

            final ArrayMap<String, ? extends BatteryStats.Uid.Wakelock> wakelocks =
                    u.getWakelockStats();
            for (int iw = wakelocks.size() - 1; iw >= 0; --iw) {
                final Uid.Wakelock wl = wakelocks.valueAt(iw);

                final Timer fullWakeTimer = wl.getWakeTime(WAKE_TYPE_FULL);
                if (fullWakeTimer != null) {
                    fullWakeLockTimeTotalUs += fullWakeTimer.getTotalTimeLocked(rawRealtimeUs,
                            which);
                }

                final Timer partialWakeTimer = wl.getWakeTime(WAKE_TYPE_PARTIAL);
                if (partialWakeTimer != null) {
                    partialWakeLockTimeTotalUs += partialWakeTimer.getTotalTimeLocked(
                        rawRealtimeUs, which);
                }
            }
        }
        final long mToken = proto.start(SystemProto.MISC);
        proto.write(SystemProto.Misc.SCREEN_ON_DURATION_MS,
                getScreenOnTime(rawRealtimeUs, which) / 1000);
        proto.write(SystemProto.Misc.PHONE_ON_DURATION_MS,
                getPhoneOnTime(rawRealtimeUs, which) / 1000);
        proto.write(SystemProto.Misc.FULL_WAKELOCK_TOTAL_DURATION_MS,
                fullWakeLockTimeTotalUs / 1000);
        proto.write(SystemProto.Misc.PARTIAL_WAKELOCK_TOTAL_DURATION_MS,
                partialWakeLockTimeTotalUs / 1000);
        proto.write(SystemProto.Misc.MOBILE_RADIO_ACTIVE_DURATION_MS,
                getMobileRadioActiveTime(rawRealtimeUs, which) / 1000);
        proto.write(SystemProto.Misc.MOBILE_RADIO_ACTIVE_ADJUSTED_TIME_MS,
                getMobileRadioActiveAdjustedTime(which) / 1000);
        proto.write(SystemProto.Misc.MOBILE_RADIO_ACTIVE_COUNT,
                getMobileRadioActiveCount(which));
        proto.write(SystemProto.Misc.MOBILE_RADIO_ACTIVE_UNKNOWN_DURATION_MS,
                getMobileRadioActiveUnknownTime(which) / 1000);
        proto.write(SystemProto.Misc.INTERACTIVE_DURATION_MS,
                getInteractiveTime(rawRealtimeUs, which) / 1000);
        proto.write(SystemProto.Misc.BATTERY_SAVER_MODE_ENABLED_DURATION_MS,
                getPowerSaveModeEnabledTime(rawRealtimeUs, which) / 1000);
        proto.write(SystemProto.Misc.NUM_CONNECTIVITY_CHANGES,
                getNumConnectivityChange(which));
        proto.write(SystemProto.Misc.DEEP_DOZE_ENABLED_DURATION_MS,
                getDeviceIdleModeTime(DEVICE_IDLE_MODE_DEEP, rawRealtimeUs, which) / 1000);
        proto.write(SystemProto.Misc.DEEP_DOZE_COUNT,
                getDeviceIdleModeCount(DEVICE_IDLE_MODE_DEEP, which));
        proto.write(SystemProto.Misc.DEEP_DOZE_IDLING_DURATION_MS,
                getDeviceIdlingTime(DEVICE_IDLE_MODE_DEEP, rawRealtimeUs, which) / 1000);
        proto.write(SystemProto.Misc.DEEP_DOZE_IDLING_COUNT,
                getDeviceIdlingCount(DEVICE_IDLE_MODE_DEEP, which));
        proto.write(SystemProto.Misc.LONGEST_DEEP_DOZE_DURATION_MS,
                getLongestDeviceIdleModeTime(DEVICE_IDLE_MODE_DEEP));
        proto.write(SystemProto.Misc.LIGHT_DOZE_ENABLED_DURATION_MS,
                getDeviceIdleModeTime(DEVICE_IDLE_MODE_LIGHT, rawRealtimeUs, which) / 1000);
        proto.write(SystemProto.Misc.LIGHT_DOZE_COUNT,
                getDeviceIdleModeCount(DEVICE_IDLE_MODE_LIGHT, which));
        proto.write(SystemProto.Misc.LIGHT_DOZE_IDLING_DURATION_MS,
                getDeviceIdlingTime(DEVICE_IDLE_MODE_LIGHT, rawRealtimeUs, which) / 1000);
        proto.write(SystemProto.Misc.LIGHT_DOZE_IDLING_COUNT,
                getDeviceIdlingCount(DEVICE_IDLE_MODE_LIGHT, which));
        proto.write(SystemProto.Misc.LONGEST_LIGHT_DOZE_DURATION_MS,
                getLongestDeviceIdleModeTime(DEVICE_IDLE_MODE_LIGHT));
        proto.end(mToken);

        // Wifi multicast wakelock total stats (WIFI_MULTICAST_WAKELOCK_TOTAL_DATA)
        final long multicastWakeLockTimeTotalUs =
                getWifiMulticastWakelockTime(rawRealtimeUs, which);
        final int multicastWakeLockCountTotal = getWifiMulticastWakelockCount(which);
        final long wmctToken = proto.start(SystemProto.WIFI_MULTICAST_WAKELOCK_TOTAL);
        proto.write(SystemProto.WifiMulticastWakelockTotal.DURATION_MS,
                multicastWakeLockTimeTotalUs / 1000);
        proto.write(SystemProto.WifiMulticastWakelockTotal.COUNT,
                multicastWakeLockCountTotal);
        proto.end(wmctToken);

        // Power use item (POWER_USE_ITEM_DATA)
        final List<BatterySipper> sippers = helper.getUsageList();
        if (sippers != null) {
            for (int i = 0; i < sippers.size(); ++i) {
                final BatterySipper bs = sippers.get(i);
                int n = SystemProto.PowerUseItem.UNKNOWN_SIPPER;
                int uid = 0;
                switch (bs.drainType) {
                    case AMBIENT_DISPLAY:
                        n = SystemProto.PowerUseItem.AMBIENT_DISPLAY;
                        break;
                    case IDLE:
                        n = SystemProto.PowerUseItem.IDLE;
                        break;
                    case CELL:
                        n = SystemProto.PowerUseItem.CELL;
                        break;
                    case PHONE:
                        n = SystemProto.PowerUseItem.PHONE;
                        break;
                    case WIFI:
                        n = SystemProto.PowerUseItem.WIFI;
                        break;
                    case BLUETOOTH:
                        n = SystemProto.PowerUseItem.BLUETOOTH;
                        break;
                    case SCREEN:
                        n = SystemProto.PowerUseItem.SCREEN;
                        break;
                    case FLASHLIGHT:
                        n = SystemProto.PowerUseItem.FLASHLIGHT;
                        break;
                    case APP:
                        // dumpProtoAppsLocked will handle this.
                        continue;
                    case USER:
                        n = SystemProto.PowerUseItem.USER;
                        uid = UserHandle.getUid(bs.userId, 0);
                        break;
                    case UNACCOUNTED:
                        n = SystemProto.PowerUseItem.UNACCOUNTED;
                        break;
                    case OVERCOUNTED:
                        n = SystemProto.PowerUseItem.OVERCOUNTED;
                        break;
                    case CAMERA:
                        n = SystemProto.PowerUseItem.CAMERA;
                        break;
                    case MEMORY:
                        n = SystemProto.PowerUseItem.MEMORY;
                        break;
                }
                final long puiToken = proto.start(SystemProto.POWER_USE_ITEM);
                proto.write(SystemProto.PowerUseItem.NAME, n);
                proto.write(SystemProto.PowerUseItem.UID, uid);
                proto.write(SystemProto.PowerUseItem.COMPUTED_POWER_MAH, bs.totalPowerMah);
                proto.write(SystemProto.PowerUseItem.SHOULD_HIDE, bs.shouldHide);
                proto.write(SystemProto.PowerUseItem.SCREEN_POWER_MAH, bs.screenPowerMah);
                proto.write(SystemProto.PowerUseItem.PROPORTIONAL_SMEAR_MAH,
                        bs.proportionalSmearMah);
                proto.end(puiToken);
            }
        }

        // Power use summary (POWER_USE_SUMMARY_DATA)
        final long pusToken = proto.start(SystemProto.POWER_USE_SUMMARY);
        proto.write(SystemProto.PowerUseSummary.BATTERY_CAPACITY_MAH,
                helper.getPowerProfile().getBatteryCapacity());
        proto.write(SystemProto.PowerUseSummary.COMPUTED_POWER_MAH, helper.getComputedPower());
        proto.write(SystemProto.PowerUseSummary.MIN_DRAINED_POWER_MAH, helper.getMinDrainedPower());
        proto.write(SystemProto.PowerUseSummary.MAX_DRAINED_POWER_MAH, helper.getMaxDrainedPower());
        proto.end(pusToken);

        // RPM stats (RESOURCE_POWER_MANAGER_DATA)
        final Map<String, ? extends Timer> rpmStats = getRpmStats();
        final Map<String, ? extends Timer> screenOffRpmStats = getScreenOffRpmStats();
        for (Map.Entry<String, ? extends Timer> ent : rpmStats.entrySet()) {
            final long rpmToken = proto.start(SystemProto.RESOURCE_POWER_MANAGER);
            proto.write(SystemProto.ResourcePowerManager.NAME, ent.getKey());
            dumpTimer(proto, SystemProto.ResourcePowerManager.TOTAL,
                    ent.getValue(), rawRealtimeUs, which);
            dumpTimer(proto, SystemProto.ResourcePowerManager.SCREEN_OFF,
                    screenOffRpmStats.get(ent.getKey()), rawRealtimeUs, which);
            proto.end(rpmToken);
        }

        // Screen brightness (SCREEN_BRIGHTNESS_DATA)
        for (int i = 0; i < NUM_SCREEN_BRIGHTNESS_BINS; ++i) {
            final long sbToken = proto.start(SystemProto.SCREEN_BRIGHTNESS);
            proto.write(SystemProto.ScreenBrightness.NAME, i);
            dumpTimer(proto, SystemProto.ScreenBrightness.TOTAL, getScreenBrightnessTimer(i),
                    rawRealtimeUs, which);
            proto.end(sbToken);
        }

        // Signal scanning time (SIGNAL_SCANNING_TIME_DATA)
        dumpTimer(proto, SystemProto.SIGNAL_SCANNING, getPhoneSignalScanningTimer(), rawRealtimeUs,
                which);

        // Phone signal strength (SIGNAL_STRENGTH_TIME_DATA and SIGNAL_STRENGTH_COUNT_DATA)
        for (int i = 0; i < SignalStrength.NUM_SIGNAL_STRENGTH_BINS; ++i) {
            final long pssToken = proto.start(SystemProto.PHONE_SIGNAL_STRENGTH);
            proto.write(SystemProto.PhoneSignalStrength.NAME, i);
            dumpTimer(proto, SystemProto.PhoneSignalStrength.TOTAL, getPhoneSignalStrengthTimer(i),
                    rawRealtimeUs, which);
            proto.end(pssToken);
        }

        // Wakeup reasons (WAKEUP_REASON_DATA)
        final Map<String, ? extends Timer> wakeupReasons = getWakeupReasonStats();
        for (Map.Entry<String, ? extends Timer> ent : wakeupReasons.entrySet()) {
            final long wrToken = proto.start(SystemProto.WAKEUP_REASON);
            proto.write(SystemProto.WakeupReason.NAME, ent.getKey());
            dumpTimer(proto, SystemProto.WakeupReason.TOTAL, ent.getValue(), rawRealtimeUs, which);
            proto.end(wrToken);
        }

        // Wifi signal strength (WIFI_SIGNAL_STRENGTH_TIME_DATA and WIFI_SIGNAL_STRENGTH_COUNT_DATA)
        for (int i = 0; i < NUM_WIFI_SIGNAL_STRENGTH_BINS; ++i) {
            final long wssToken = proto.start(SystemProto.WIFI_SIGNAL_STRENGTH);
            proto.write(SystemProto.WifiSignalStrength.NAME, i);
            dumpTimer(proto, SystemProto.WifiSignalStrength.TOTAL, getWifiSignalStrengthTimer(i),
                    rawRealtimeUs, which);
            proto.end(wssToken);
        }

        // Wifi state (WIFI_STATE_TIME_DATA and WIFI_STATE_COUNT_DATA)
        for (int i = 0; i < NUM_WIFI_STATES; ++i) {
            final long wsToken = proto.start(SystemProto.WIFI_STATE);
            proto.write(SystemProto.WifiState.NAME, i);
            dumpTimer(proto, SystemProto.WifiState.TOTAL, getWifiStateTimer(i),
                    rawRealtimeUs, which);
            proto.end(wsToken);
        }

        // Wifi supplicant state (WIFI_SUPPL_STATE_TIME_DATA and WIFI_SUPPL_STATE_COUNT_DATA)
        for (int i = 0; i < NUM_WIFI_SUPPL_STATES; ++i) {
            final long wssToken = proto.start(SystemProto.WIFI_SUPPLICANT_STATE);
            proto.write(SystemProto.WifiSupplicantState.NAME, i);
            dumpTimer(proto, SystemProto.WifiSupplicantState.TOTAL, getWifiSupplStateTimer(i),
                    rawRealtimeUs, which);
            proto.end(wssToken);
        }

        proto.end(sToken);
    }
}