Java程序
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1455行
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64.83 KB
/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.server;
import static com.android.internal.logging.nano.MetricsProto.MetricsEvent;
import android.app.ActivityManager;
import android.app.ActivityManagerInternal;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.database.ContentObserver;
import android.hardware.health.V1_0.HealthInfo;
import android.hardware.health.V2_0.IHealth;
import android.hardware.health.V2_0.IHealthInfoCallback;
import android.hardware.health.V2_0.Result;
import android.hidl.manager.V1_0.IServiceManager;
import android.hidl.manager.V1_0.IServiceNotification;
import android.metrics.LogMaker;
import android.os.BatteryManager;
import android.os.BatteryManagerInternal;
import android.os.BatteryProperty;
import android.os.BatteryStats;
import android.os.Binder;
import android.os.Bundle;
import android.os.DropBoxManager;
import android.os.FileUtils;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.IBatteryPropertiesListener;
import android.os.IBatteryPropertiesRegistrar;
import android.os.IBinder;
import android.os.OsProtoEnums;
import android.os.PowerManager;
import android.os.RemoteException;
import android.os.ResultReceiver;
import android.os.ServiceManager;
import android.os.ShellCallback;
import android.os.ShellCommand;
import android.os.SystemClock;
import android.os.Trace;
import android.os.UEventObserver;
import android.os.UserHandle;
import android.provider.Settings;
import android.service.battery.BatteryServiceDumpProto;
import android.util.EventLog;
import android.util.MutableInt;
import android.util.Slog;
import android.util.proto.ProtoOutputStream;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.app.IBatteryStats;
import com.android.internal.logging.MetricsLogger;
import com.android.internal.util.DumpUtils;
import com.android.server.am.BatteryStatsService;
import com.android.server.lights.Light;
import com.android.server.lights.LightsManager;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.Objects;
import java.util.concurrent.atomic.AtomicReference;
/**
* <p>BatteryService monitors the charging status, and charge level of the device
* battery. When these values change this service broadcasts the new values
* to all {@link android.content.BroadcastReceiver IntentReceivers} that are
* watching the {@link android.content.Intent#ACTION_BATTERY_CHANGED
* BATTERY_CHANGED} action.</p>
* <p>The new values are stored in the Intent data and can be retrieved by
* calling {@link android.content.Intent#getExtra Intent.getExtra} with the
* following keys:</p>
* <p>"scale" - int, the maximum value for the charge level</p>
* <p>"level" - int, charge level, from 0 through "scale" inclusive</p>
* <p>"status" - String, the current charging status.<br />
* <p>"health" - String, the current battery health.<br />
* <p>"present" - boolean, true if the battery is present<br />
* <p>"icon-small" - int, suggested small icon to use for this state</p>
* <p>"plugged" - int, 0 if the device is not plugged in; 1 if plugged
* into an AC power adapter; 2 if plugged in via USB.</p>
* <p>"voltage" - int, current battery voltage in millivolts</p>
* <p>"temperature" - int, current battery temperature in tenths of
* a degree Centigrade</p>
* <p>"technology" - String, the type of battery installed, e.g. "Li-ion"</p>
*
* <p>
* The battery service may be called by the power manager while holding its locks so
* we take care to post all outcalls into the activity manager to a handler.
*
* FIXME: Ideally the power manager would perform all of its calls into the battery
* service asynchronously itself.
* </p>
*/
public final class BatteryService extends SystemService {
private static final String TAG = BatteryService.class.getSimpleName();
private static final boolean DEBUG = false;
private static final int BATTERY_SCALE = 100; // battery capacity is a percentage
private static final long HEALTH_HAL_WAIT_MS = 1000;
private static final long BATTERY_LEVEL_CHANGE_THROTTLE_MS = 60_000;
private static final int MAX_BATTERY_LEVELS_QUEUE_SIZE = 100;
// Used locally for determining when to make a last ditch effort to log
// discharge stats before the device dies.
private int mCriticalBatteryLevel;
private static final String[] DUMPSYS_ARGS = new String[] { "--checkin", "--unplugged" };
private static final String DUMPSYS_DATA_PATH = "/data/system/";
// This should probably be exposed in the API, though it's not critical
private static final int BATTERY_PLUGGED_NONE = OsProtoEnums.BATTERY_PLUGGED_NONE; // = 0
private final Context mContext;
private final IBatteryStats mBatteryStats;
BinderService mBinderService;
private final Handler mHandler;
private final Object mLock = new Object();
private HealthInfo mHealthInfo;
private final HealthInfo mLastHealthInfo = new HealthInfo();
private boolean mBatteryLevelCritical;
private int mLastBatteryStatus;
private int mLastBatteryHealth;
private boolean mLastBatteryPresent;
private int mLastBatteryLevel;
private int mLastBatteryVoltage;
private int mLastBatteryTemperature;
private boolean mLastBatteryLevelCritical;
private int mLastMaxChargingCurrent;
private int mLastMaxChargingVoltage;
private int mLastChargeCounter;
private int mSequence = 1;
private int mInvalidCharger;
private int mLastInvalidCharger;
private int mLowBatteryWarningLevel;
private int mLowBatteryCloseWarningLevel;
private int mShutdownBatteryTemperature;
private int mPlugType;
private int mLastPlugType = -1; // Extra state so we can detect first run
private boolean mBatteryLevelLow;
private long mDischargeStartTime;
private int mDischargeStartLevel;
private long mChargeStartTime;
private int mChargeStartLevel;
private boolean mUpdatesStopped;
private Led mLed;
private boolean mSentLowBatteryBroadcast = false;
private ActivityManagerInternal mActivityManagerInternal;
private HealthServiceWrapper mHealthServiceWrapper;
private HealthHalCallback mHealthHalCallback;
private BatteryPropertiesRegistrar mBatteryPropertiesRegistrar;
private ArrayDeque<Bundle> mBatteryLevelsEventQueue;
private long mLastBatteryLevelChangedSentMs;
private MetricsLogger mMetricsLogger;
public BatteryService(Context context) {
super(context);
mContext = context;
mHandler = new Handler(true /*async*/);
mLed = new Led(context, getLocalService(LightsManager.class));
mBatteryStats = BatteryStatsService.getService();
mActivityManagerInternal = LocalServices.getService(ActivityManagerInternal.class);
mCriticalBatteryLevel = mContext.getResources().getInteger(
com.android.internal.R.integer.config_criticalBatteryWarningLevel);
mLowBatteryWarningLevel = mContext.getResources().getInteger(
com.android.internal.R.integer.config_lowBatteryWarningLevel);
mLowBatteryCloseWarningLevel = mLowBatteryWarningLevel + mContext.getResources().getInteger(
com.android.internal.R.integer.config_lowBatteryCloseWarningBump);
mShutdownBatteryTemperature = mContext.getResources().getInteger(
com.android.internal.R.integer.config_shutdownBatteryTemperature);
mBatteryLevelsEventQueue = new ArrayDeque<>();
mMetricsLogger = new MetricsLogger();
// watch for invalid charger messages if the invalid_charger switch exists
if (new File("/sys/devices/virtual/switch/invalid_charger/state").exists()) {
UEventObserver invalidChargerObserver = new UEventObserver() {
@Override
public void onUEvent(UEvent event) {
final int invalidCharger = "1".equals(event.get("SWITCH_STATE")) ? 1 : 0;
synchronized (mLock) {
if (mInvalidCharger != invalidCharger) {
mInvalidCharger = invalidCharger;
}
}
}
};
invalidChargerObserver.startObserving(
"DEVPATH=/devices/virtual/switch/invalid_charger");
}
}
@Override
public void onStart() {
registerHealthCallback();
mBinderService = new BinderService();
publishBinderService("battery", mBinderService);
mBatteryPropertiesRegistrar = new BatteryPropertiesRegistrar();
publishBinderService("batteryproperties", mBatteryPropertiesRegistrar);
publishLocalService(BatteryManagerInternal.class, new LocalService());
}
@Override
public void onBootPhase(int phase) {
if (phase == PHASE_ACTIVITY_MANAGER_READY) {
// check our power situation now that it is safe to display the shutdown dialog.
synchronized (mLock) {
ContentObserver obs = new ContentObserver(mHandler) {
@Override
public void onChange(boolean selfChange) {
synchronized (mLock) {
updateBatteryWarningLevelLocked();
}
}
};
final ContentResolver resolver = mContext.getContentResolver();
resolver.registerContentObserver(Settings.Global.getUriFor(
Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL),
false, obs, UserHandle.USER_ALL);
updateBatteryWarningLevelLocked();
}
}
}
private void registerHealthCallback() {
traceBegin("HealthInitWrapper");
mHealthServiceWrapper = new HealthServiceWrapper();
mHealthHalCallback = new HealthHalCallback();
// IHealth is lazily retrieved.
try {
mHealthServiceWrapper.init(mHealthHalCallback,
new HealthServiceWrapper.IServiceManagerSupplier() {},
new HealthServiceWrapper.IHealthSupplier() {});
} catch (RemoteException ex) {
Slog.e(TAG, "health: cannot register callback. (RemoteException)");
throw ex.rethrowFromSystemServer();
} catch (NoSuchElementException ex) {
Slog.e(TAG, "health: cannot register callback. (no supported health HAL service)");
throw ex;
} finally {
traceEnd();
}
traceBegin("HealthInitWaitUpdate");
// init register for new service notifications, and IServiceManager should return the
// existing service in a near future. Wait for this.update() to instantiate
// the initial mHealthInfo.
long beforeWait = SystemClock.uptimeMillis();
synchronized (mLock) {
while (mHealthInfo == null) {
Slog.i(TAG, "health: Waited " + (SystemClock.uptimeMillis() - beforeWait) +
"ms for callbacks. Waiting another " + HEALTH_HAL_WAIT_MS + " ms...");
try {
mLock.wait(HEALTH_HAL_WAIT_MS);
} catch (InterruptedException ex) {
Slog.i(TAG, "health: InterruptedException when waiting for update. "
+ " Continuing...");
}
}
}
Slog.i(TAG, "health: Waited " + (SystemClock.uptimeMillis() - beforeWait)
+ "ms and received the update.");
traceEnd();
}
private void updateBatteryWarningLevelLocked() {
final ContentResolver resolver = mContext.getContentResolver();
int defWarnLevel = mContext.getResources().getInteger(
com.android.internal.R.integer.config_lowBatteryWarningLevel);
mLowBatteryWarningLevel = Settings.Global.getInt(resolver,
Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL, defWarnLevel);
if (mLowBatteryWarningLevel == 0) {
mLowBatteryWarningLevel = defWarnLevel;
}
if (mLowBatteryWarningLevel < mCriticalBatteryLevel) {
mLowBatteryWarningLevel = mCriticalBatteryLevel;
}
mLowBatteryCloseWarningLevel = mLowBatteryWarningLevel + mContext.getResources().getInteger(
com.android.internal.R.integer.config_lowBatteryCloseWarningBump);
processValuesLocked(true);
}
private boolean isPoweredLocked(int plugTypeSet) {
// assume we are powered if battery state is unknown so
// the "stay on while plugged in" option will work.
if (mHealthInfo.batteryStatus == BatteryManager.BATTERY_STATUS_UNKNOWN) {
return true;
}
if ((plugTypeSet & BatteryManager.BATTERY_PLUGGED_AC) != 0 && mHealthInfo.chargerAcOnline) {
return true;
}
if ((plugTypeSet & BatteryManager.BATTERY_PLUGGED_USB) != 0 && mHealthInfo.chargerUsbOnline) {
return true;
}
if ((plugTypeSet & BatteryManager.BATTERY_PLUGGED_WIRELESS) != 0 && mHealthInfo.chargerWirelessOnline) {
return true;
}
return false;
}
private boolean shouldSendBatteryLowLocked() {
final boolean plugged = mPlugType != BATTERY_PLUGGED_NONE;
final boolean oldPlugged = mLastPlugType != BATTERY_PLUGGED_NONE;
/* The ACTION_BATTERY_LOW broadcast is sent in these situations:
* - is just un-plugged (previously was plugged) and battery level is
* less than or equal to WARNING, or
* - is not plugged and battery level falls to WARNING boundary
* (becomes <= mLowBatteryWarningLevel).
*/
return !plugged
&& mHealthInfo.batteryStatus != BatteryManager.BATTERY_STATUS_UNKNOWN
&& mHealthInfo.batteryLevel <= mLowBatteryWarningLevel
&& (oldPlugged || mLastBatteryLevel > mLowBatteryWarningLevel);
}
private void shutdownIfNoPowerLocked() {
// shut down gracefully if our battery is critically low and we are not powered.
// wait until the system has booted before attempting to display the shutdown dialog.
if (mHealthInfo.batteryLevel == 0 && !isPoweredLocked(BatteryManager.BATTERY_PLUGGED_ANY)) {
mHandler.post(new Runnable() {
@Override
public void run() {
if (mActivityManagerInternal.isSystemReady()) {
Intent intent = new Intent(Intent.ACTION_REQUEST_SHUTDOWN);
intent.putExtra(Intent.EXTRA_KEY_CONFIRM, false);
intent.putExtra(Intent.EXTRA_REASON,
PowerManager.SHUTDOWN_LOW_BATTERY);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
mContext.startActivityAsUser(intent, UserHandle.CURRENT);
}
}
});
}
}
private void shutdownIfOverTempLocked() {
// shut down gracefully if temperature is too high (> 68.0C by default)
// wait until the system has booted before attempting to display the
// shutdown dialog.
if (mHealthInfo.batteryTemperature > mShutdownBatteryTemperature) {
mHandler.post(new Runnable() {
@Override
public void run() {
if (mActivityManagerInternal.isSystemReady()) {
Intent intent = new Intent(Intent.ACTION_REQUEST_SHUTDOWN);
intent.putExtra(Intent.EXTRA_KEY_CONFIRM, false);
intent.putExtra(Intent.EXTRA_REASON,
PowerManager.SHUTDOWN_BATTERY_THERMAL_STATE);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
mContext.startActivityAsUser(intent, UserHandle.CURRENT);
}
}
});
}
}
private void update(android.hardware.health.V2_0.HealthInfo info) {
traceBegin("HealthInfoUpdate");
synchronized (mLock) {
if (!mUpdatesStopped) {
mHealthInfo = info.legacy;
// Process the new values.
processValuesLocked(false);
mLock.notifyAll(); // for any waiters on new info
} else {
copy(mLastHealthInfo, info.legacy);
}
}
traceEnd();
}
private static void copy(HealthInfo dst, HealthInfo src) {
dst.chargerAcOnline = src.chargerAcOnline;
dst.chargerUsbOnline = src.chargerUsbOnline;
dst.chargerWirelessOnline = src.chargerWirelessOnline;
dst.maxChargingCurrent = src.maxChargingCurrent;
dst.maxChargingVoltage = src.maxChargingVoltage;
dst.batteryStatus = src.batteryStatus;
dst.batteryHealth = src.batteryHealth;
dst.batteryPresent = src.batteryPresent;
dst.batteryLevel = src.batteryLevel;
dst.batteryVoltage = src.batteryVoltage;
dst.batteryTemperature = src.batteryTemperature;
dst.batteryCurrent = src.batteryCurrent;
dst.batteryCycleCount = src.batteryCycleCount;
dst.batteryFullCharge = src.batteryFullCharge;
dst.batteryChargeCounter = src.batteryChargeCounter;
dst.batteryTechnology = src.batteryTechnology;
}
private void processValuesLocked(boolean force) {
boolean logOutlier = false;
long dischargeDuration = 0;
mBatteryLevelCritical =
mHealthInfo.batteryStatus != BatteryManager.BATTERY_STATUS_UNKNOWN
&& mHealthInfo.batteryLevel <= mCriticalBatteryLevel;
if (mHealthInfo.chargerAcOnline) {
mPlugType = BatteryManager.BATTERY_PLUGGED_AC;
} else if (mHealthInfo.chargerUsbOnline) {
mPlugType = BatteryManager.BATTERY_PLUGGED_USB;
} else if (mHealthInfo.chargerWirelessOnline) {
mPlugType = BatteryManager.BATTERY_PLUGGED_WIRELESS;
} else {
mPlugType = BATTERY_PLUGGED_NONE;
}
if (DEBUG) {
Slog.d(TAG, "Processing new values: "
+ "info=" + mHealthInfo
+ ", mBatteryLevelCritical=" + mBatteryLevelCritical
+ ", mPlugType=" + mPlugType);
}
// Let the battery stats keep track of the current level.
try {
mBatteryStats.setBatteryState(mHealthInfo.batteryStatus, mHealthInfo.batteryHealth,
mPlugType, mHealthInfo.batteryLevel, mHealthInfo.batteryTemperature,
mHealthInfo.batteryVoltage, mHealthInfo.batteryChargeCounter,
mHealthInfo.batteryFullCharge);
} catch (RemoteException e) {
// Should never happen.
}
shutdownIfNoPowerLocked();
shutdownIfOverTempLocked();
if (force || (mHealthInfo.batteryStatus != mLastBatteryStatus ||
mHealthInfo.batteryHealth != mLastBatteryHealth ||
mHealthInfo.batteryPresent != mLastBatteryPresent ||
mHealthInfo.batteryLevel != mLastBatteryLevel ||
mPlugType != mLastPlugType ||
mHealthInfo.batteryVoltage != mLastBatteryVoltage ||
mHealthInfo.batteryTemperature != mLastBatteryTemperature ||
mHealthInfo.maxChargingCurrent != mLastMaxChargingCurrent ||
mHealthInfo.maxChargingVoltage != mLastMaxChargingVoltage ||
mHealthInfo.batteryChargeCounter != mLastChargeCounter ||
mInvalidCharger != mLastInvalidCharger)) {
if (mPlugType != mLastPlugType) {
if (mLastPlugType == BATTERY_PLUGGED_NONE) {
// discharging -> charging
mChargeStartLevel = mHealthInfo.batteryLevel;
mChargeStartTime = SystemClock.elapsedRealtime();
final LogMaker builder = new LogMaker(MetricsEvent.ACTION_CHARGE);
builder.setType(MetricsEvent.TYPE_ACTION);
builder.addTaggedData(MetricsEvent.FIELD_PLUG_TYPE, mPlugType);
builder.addTaggedData(MetricsEvent.FIELD_BATTERY_LEVEL_START,
mHealthInfo.batteryLevel);
mMetricsLogger.write(builder);
// There's no value in this data unless we've discharged at least once and the
// battery level has changed; so don't log until it does.
if (mDischargeStartTime != 0 && mDischargeStartLevel != mHealthInfo.batteryLevel) {
dischargeDuration = SystemClock.elapsedRealtime() - mDischargeStartTime;
logOutlier = true;
EventLog.writeEvent(EventLogTags.BATTERY_DISCHARGE, dischargeDuration,
mDischargeStartLevel, mHealthInfo.batteryLevel);
// make sure we see a discharge event before logging again
mDischargeStartTime = 0;
}
} else if (mPlugType == BATTERY_PLUGGED_NONE) {
// charging -> discharging or we just powered up
mDischargeStartTime = SystemClock.elapsedRealtime();
mDischargeStartLevel = mHealthInfo.batteryLevel;
long chargeDuration = SystemClock.elapsedRealtime() - mChargeStartTime;
if (mChargeStartTime != 0 && chargeDuration != 0) {
final LogMaker builder = new LogMaker(MetricsEvent.ACTION_CHARGE);
builder.setType(MetricsEvent.TYPE_DISMISS);
builder.addTaggedData(MetricsEvent.FIELD_PLUG_TYPE, mLastPlugType);
builder.addTaggedData(MetricsEvent.FIELD_CHARGING_DURATION_MILLIS,
chargeDuration);
builder.addTaggedData(MetricsEvent.FIELD_BATTERY_LEVEL_START,
mChargeStartLevel);
builder.addTaggedData(MetricsEvent.FIELD_BATTERY_LEVEL_END,
mHealthInfo.batteryLevel);
mMetricsLogger.write(builder);
}
mChargeStartTime = 0;
}
}
if (mHealthInfo.batteryStatus != mLastBatteryStatus ||
mHealthInfo.batteryHealth != mLastBatteryHealth ||
mHealthInfo.batteryPresent != mLastBatteryPresent ||
mPlugType != mLastPlugType) {
EventLog.writeEvent(EventLogTags.BATTERY_STATUS,
mHealthInfo.batteryStatus, mHealthInfo.batteryHealth, mHealthInfo.batteryPresent ? 1 : 0,
mPlugType, mHealthInfo.batteryTechnology);
}
if (mHealthInfo.batteryLevel != mLastBatteryLevel) {
// Don't do this just from voltage or temperature changes, that is
// too noisy.
EventLog.writeEvent(EventLogTags.BATTERY_LEVEL,
mHealthInfo.batteryLevel, mHealthInfo.batteryVoltage, mHealthInfo.batteryTemperature);
}
if (mBatteryLevelCritical && !mLastBatteryLevelCritical &&
mPlugType == BATTERY_PLUGGED_NONE) {
// We want to make sure we log discharge cycle outliers
// if the battery is about to die.
dischargeDuration = SystemClock.elapsedRealtime() - mDischargeStartTime;
logOutlier = true;
}
if (!mBatteryLevelLow) {
// Should we now switch in to low battery mode?
if (mPlugType == BATTERY_PLUGGED_NONE
&& mHealthInfo.batteryStatus !=
BatteryManager.BATTERY_STATUS_UNKNOWN
&& mHealthInfo.batteryLevel <= mLowBatteryWarningLevel) {
mBatteryLevelLow = true;
}
} else {
// Should we now switch out of low battery mode?
if (mPlugType != BATTERY_PLUGGED_NONE) {
mBatteryLevelLow = false;
} else if (mHealthInfo.batteryLevel >= mLowBatteryCloseWarningLevel) {
mBatteryLevelLow = false;
} else if (force && mHealthInfo.batteryLevel >= mLowBatteryWarningLevel) {
// If being forced, the previous state doesn't matter, we will just
// absolutely check to see if we are now above the warning level.
mBatteryLevelLow = false;
}
}
mSequence++;
// Separate broadcast is sent for power connected / not connected
// since the standard intent will not wake any applications and some
// applications may want to have smart behavior based on this.
if (mPlugType != 0 && mLastPlugType == 0) {
final Intent statusIntent = new Intent(Intent.ACTION_POWER_CONNECTED);
statusIntent.setFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
statusIntent.putExtra(BatteryManager.EXTRA_SEQUENCE, mSequence);
mHandler.post(new Runnable() {
@Override
public void run() {
mContext.sendBroadcastAsUser(statusIntent, UserHandle.ALL);
}
});
}
else if (mPlugType == 0 && mLastPlugType != 0) {
final Intent statusIntent = new Intent(Intent.ACTION_POWER_DISCONNECTED);
statusIntent.setFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
statusIntent.putExtra(BatteryManager.EXTRA_SEQUENCE, mSequence);
mHandler.post(new Runnable() {
@Override
public void run() {
mContext.sendBroadcastAsUser(statusIntent, UserHandle.ALL);
}
});
}
if (shouldSendBatteryLowLocked()) {
mSentLowBatteryBroadcast = true;
final Intent statusIntent = new Intent(Intent.ACTION_BATTERY_LOW);
statusIntent.setFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
statusIntent.putExtra(BatteryManager.EXTRA_SEQUENCE, mSequence);
mHandler.post(new Runnable() {
@Override
public void run() {
mContext.sendBroadcastAsUser(statusIntent, UserHandle.ALL);
}
});
} else if (mSentLowBatteryBroadcast &&
mHealthInfo.batteryLevel >= mLowBatteryCloseWarningLevel) {
mSentLowBatteryBroadcast = false;
final Intent statusIntent = new Intent(Intent.ACTION_BATTERY_OKAY);
statusIntent.setFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
statusIntent.putExtra(BatteryManager.EXTRA_SEQUENCE, mSequence);
mHandler.post(new Runnable() {
@Override
public void run() {
mContext.sendBroadcastAsUser(statusIntent, UserHandle.ALL);
}
});
}
// We are doing this after sending the above broadcasts, so anything processing
// them will get the new sequence number at that point. (See for example how testing
// of JobScheduler's BatteryController works.)
sendBatteryChangedIntentLocked();
if (mLastBatteryLevel != mHealthInfo.batteryLevel) {
sendBatteryLevelChangedIntentLocked();
}
// Update the battery LED
mLed.updateLightsLocked();
// This needs to be done after sendIntent() so that we get the lastest battery stats.
if (logOutlier && dischargeDuration != 0) {
logOutlierLocked(dischargeDuration);
}
mLastBatteryStatus = mHealthInfo.batteryStatus;
mLastBatteryHealth = mHealthInfo.batteryHealth;
mLastBatteryPresent = mHealthInfo.batteryPresent;
mLastBatteryLevel = mHealthInfo.batteryLevel;
mLastPlugType = mPlugType;
mLastBatteryVoltage = mHealthInfo.batteryVoltage;
mLastBatteryTemperature = mHealthInfo.batteryTemperature;
mLastMaxChargingCurrent = mHealthInfo.maxChargingCurrent;
mLastMaxChargingVoltage = mHealthInfo.maxChargingVoltage;
mLastChargeCounter = mHealthInfo.batteryChargeCounter;
mLastBatteryLevelCritical = mBatteryLevelCritical;
mLastInvalidCharger = mInvalidCharger;
}
}
private void sendBatteryChangedIntentLocked() {
// Pack up the values and broadcast them to everyone
final Intent intent = new Intent(Intent.ACTION_BATTERY_CHANGED);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY
| Intent.FLAG_RECEIVER_REPLACE_PENDING);
int icon = getIconLocked(mHealthInfo.batteryLevel);
intent.putExtra(BatteryManager.EXTRA_SEQUENCE, mSequence);
intent.putExtra(BatteryManager.EXTRA_STATUS, mHealthInfo.batteryStatus);
intent.putExtra(BatteryManager.EXTRA_HEALTH, mHealthInfo.batteryHealth);
intent.putExtra(BatteryManager.EXTRA_PRESENT, mHealthInfo.batteryPresent);
intent.putExtra(BatteryManager.EXTRA_LEVEL, mHealthInfo.batteryLevel);
intent.putExtra(BatteryManager.EXTRA_BATTERY_LOW, mSentLowBatteryBroadcast);
intent.putExtra(BatteryManager.EXTRA_SCALE, BATTERY_SCALE);
intent.putExtra(BatteryManager.EXTRA_ICON_SMALL, icon);
intent.putExtra(BatteryManager.EXTRA_PLUGGED, mPlugType);
intent.putExtra(BatteryManager.EXTRA_VOLTAGE, mHealthInfo.batteryVoltage);
intent.putExtra(BatteryManager.EXTRA_TEMPERATURE, mHealthInfo.batteryTemperature);
intent.putExtra(BatteryManager.EXTRA_TECHNOLOGY, mHealthInfo.batteryTechnology);
intent.putExtra(BatteryManager.EXTRA_INVALID_CHARGER, mInvalidCharger);
intent.putExtra(BatteryManager.EXTRA_MAX_CHARGING_CURRENT, mHealthInfo.maxChargingCurrent);
intent.putExtra(BatteryManager.EXTRA_MAX_CHARGING_VOLTAGE, mHealthInfo.maxChargingVoltage);
intent.putExtra(BatteryManager.EXTRA_CHARGE_COUNTER, mHealthInfo.batteryChargeCounter);
if (DEBUG) {
Slog.d(TAG, "Sending ACTION_BATTERY_CHANGED. scale:" + BATTERY_SCALE
+ ", info:" + mHealthInfo.toString());
}
mHandler.post(() -> ActivityManager.broadcastStickyIntent(intent, UserHandle.USER_ALL));
}
private void sendBatteryLevelChangedIntentLocked() {
Bundle event = new Bundle();
long now = SystemClock.elapsedRealtime();
event.putInt(BatteryManager.EXTRA_SEQUENCE, mSequence);
event.putInt(BatteryManager.EXTRA_STATUS, mHealthInfo.batteryStatus);
event.putInt(BatteryManager.EXTRA_HEALTH, mHealthInfo.batteryHealth);
event.putBoolean(BatteryManager.EXTRA_PRESENT, mHealthInfo.batteryPresent);
event.putInt(BatteryManager.EXTRA_LEVEL, mHealthInfo.batteryLevel);
event.putBoolean(BatteryManager.EXTRA_BATTERY_LOW, mSentLowBatteryBroadcast);
event.putInt(BatteryManager.EXTRA_SCALE, BATTERY_SCALE);
event.putInt(BatteryManager.EXTRA_PLUGGED, mPlugType);
event.putInt(BatteryManager.EXTRA_VOLTAGE, mHealthInfo.batteryVoltage);
event.putLong(BatteryManager.EXTRA_EVENT_TIMESTAMP, now);
boolean queueWasEmpty = mBatteryLevelsEventQueue.isEmpty();
mBatteryLevelsEventQueue.add(event);
// Make sure queue is bounded and doesn't exceed intent payload limits
if (mBatteryLevelsEventQueue.size() > MAX_BATTERY_LEVELS_QUEUE_SIZE) {
mBatteryLevelsEventQueue.removeFirst();
}
if (queueWasEmpty) {
// send now if last event was before throttle interval, otherwise delay
long delay = now - mLastBatteryLevelChangedSentMs > BATTERY_LEVEL_CHANGE_THROTTLE_MS
? 0 : mLastBatteryLevelChangedSentMs + BATTERY_LEVEL_CHANGE_THROTTLE_MS - now;
mHandler.postDelayed(this::sendEnqueuedBatteryLevelChangedEvents, delay);
}
}
private void sendEnqueuedBatteryLevelChangedEvents() {
ArrayList<Bundle> events;
synchronized (mLock) {
events = new ArrayList<>(mBatteryLevelsEventQueue);
mBatteryLevelsEventQueue.clear();
}
final Intent intent = new Intent(Intent.ACTION_BATTERY_LEVEL_CHANGED);
intent.addFlags(Intent.FLAG_RECEIVER_INCLUDE_BACKGROUND);
intent.putParcelableArrayListExtra(BatteryManager.EXTRA_EVENTS, events);
mContext.sendBroadcastAsUser(intent, UserHandle.ALL,
android.Manifest.permission.BATTERY_STATS);
mLastBatteryLevelChangedSentMs = SystemClock.elapsedRealtime();
}
private void logBatteryStatsLocked() {
IBinder batteryInfoService = ServiceManager.getService(BatteryStats.SERVICE_NAME);
if (batteryInfoService == null) return;
DropBoxManager db = (DropBoxManager) mContext.getSystemService(Context.DROPBOX_SERVICE);
if (db == null || !db.isTagEnabled("BATTERY_DISCHARGE_INFO")) return;
File dumpFile = null;
FileOutputStream dumpStream = null;
try {
// dump the service to a file
dumpFile = new File(DUMPSYS_DATA_PATH + BatteryStats.SERVICE_NAME + ".dump");
dumpStream = new FileOutputStream(dumpFile);
batteryInfoService.dump(dumpStream.getFD(), DUMPSYS_ARGS);
FileUtils.sync(dumpStream);
// add dump file to drop box
db.addFile("BATTERY_DISCHARGE_INFO", dumpFile, DropBoxManager.IS_TEXT);
} catch (RemoteException e) {
Slog.e(TAG, "failed to dump battery service", e);
} catch (IOException e) {
Slog.e(TAG, "failed to write dumpsys file", e);
} finally {
// make sure we clean up
if (dumpStream != null) {
try {
dumpStream.close();
} catch (IOException e) {
Slog.e(TAG, "failed to close dumpsys output stream");
}
}
if (dumpFile != null && !dumpFile.delete()) {
Slog.e(TAG, "failed to delete temporary dumpsys file: "
+ dumpFile.getAbsolutePath());
}
}
}
private void logOutlierLocked(long duration) {
ContentResolver cr = mContext.getContentResolver();
String dischargeThresholdString = Settings.Global.getString(cr,
Settings.Global.BATTERY_DISCHARGE_THRESHOLD);
String durationThresholdString = Settings.Global.getString(cr,
Settings.Global.BATTERY_DISCHARGE_DURATION_THRESHOLD);
if (dischargeThresholdString != null && durationThresholdString != null) {
try {
long durationThreshold = Long.parseLong(durationThresholdString);
int dischargeThreshold = Integer.parseInt(dischargeThresholdString);
if (duration <= durationThreshold &&
mDischargeStartLevel - mHealthInfo.batteryLevel >= dischargeThreshold) {
// If the discharge cycle is bad enough we want to know about it.
logBatteryStatsLocked();
}
if (DEBUG) Slog.v(TAG, "duration threshold: " + durationThreshold +
" discharge threshold: " + dischargeThreshold);
if (DEBUG) Slog.v(TAG, "duration: " + duration + " discharge: " +
(mDischargeStartLevel - mHealthInfo.batteryLevel));
} catch (NumberFormatException e) {
Slog.e(TAG, "Invalid DischargeThresholds GService string: " +
durationThresholdString + " or " + dischargeThresholdString);
}
}
}
private int getIconLocked(int level) {
if (mHealthInfo.batteryStatus == BatteryManager.BATTERY_STATUS_CHARGING) {
return com.android.internal.R.drawable.stat_sys_battery_charge;
} else if (mHealthInfo.batteryStatus == BatteryManager.BATTERY_STATUS_DISCHARGING) {
return com.android.internal.R.drawable.stat_sys_battery;
} else if (mHealthInfo.batteryStatus == BatteryManager.BATTERY_STATUS_NOT_CHARGING
|| mHealthInfo.batteryStatus == BatteryManager.BATTERY_STATUS_FULL) {
if (isPoweredLocked(BatteryManager.BATTERY_PLUGGED_ANY)
&& mHealthInfo.batteryLevel >= 100) {
return com.android.internal.R.drawable.stat_sys_battery_charge;
} else {
return com.android.internal.R.drawable.stat_sys_battery;
}
} else {
return com.android.internal.R.drawable.stat_sys_battery_unknown;
}
}
class Shell extends ShellCommand {
@Override
public int onCommand(String cmd) {
return onShellCommand(this, cmd);
}
@Override
public void onHelp() {
PrintWriter pw = getOutPrintWriter();
dumpHelp(pw);
}
}
static void dumpHelp(PrintWriter pw) {
pw.println("Battery service (battery) commands:");
pw.println(" help");
pw.println(" Print this help text.");
pw.println(" set [-f] [ac|usb|wireless|status|level|temp|present|invalid] <value>");
pw.println(" Force a battery property value, freezing battery state.");
pw.println(" -f: force a battery change broadcast be sent, prints new sequence.");
pw.println(" unplug [-f]");
pw.println(" Force battery unplugged, freezing battery state.");
pw.println(" -f: force a battery change broadcast be sent, prints new sequence.");
pw.println(" reset [-f]");
pw.println(" Unfreeze battery state, returning to current hardware values.");
pw.println(" -f: force a battery change broadcast be sent, prints new sequence.");
}
static final int OPTION_FORCE_UPDATE = 1<<0;
int parseOptions(Shell shell) {
String opt;
int opts = 0;
while ((opt = shell.getNextOption()) != null) {
if ("-f".equals(opt)) {
opts |= OPTION_FORCE_UPDATE;
}
}
return opts;
}
int onShellCommand(Shell shell, String cmd) {
if (cmd == null) {
return shell.handleDefaultCommands(cmd);
}
PrintWriter pw = shell.getOutPrintWriter();
switch (cmd) {
case "unplug": {
int opts = parseOptions(shell);
getContext().enforceCallingOrSelfPermission(
android.Manifest.permission.DEVICE_POWER, null);
if (!mUpdatesStopped) {
copy(mLastHealthInfo, mHealthInfo);
}
mHealthInfo.chargerAcOnline = false;
mHealthInfo.chargerUsbOnline = false;
mHealthInfo.chargerWirelessOnline = false;
long ident = Binder.clearCallingIdentity();
try {
mUpdatesStopped = true;
processValuesFromShellLocked(pw, opts);
} finally {
Binder.restoreCallingIdentity(ident);
}
} break;
case "set": {
int opts = parseOptions(shell);
getContext().enforceCallingOrSelfPermission(
android.Manifest.permission.DEVICE_POWER, null);
final String key = shell.getNextArg();
if (key == null) {
pw.println("No property specified");
return -1;
}
final String value = shell.getNextArg();
if (value == null) {
pw.println("No value specified");
return -1;
}
try {
if (!mUpdatesStopped) {
copy(mLastHealthInfo, mHealthInfo);
}
boolean update = true;
switch (key) {
case "present":
mHealthInfo.batteryPresent = Integer.parseInt(value) != 0;
break;
case "ac":
mHealthInfo.chargerAcOnline = Integer.parseInt(value) != 0;
break;
case "usb":
mHealthInfo.chargerUsbOnline = Integer.parseInt(value) != 0;
break;
case "wireless":
mHealthInfo.chargerWirelessOnline = Integer.parseInt(value) != 0;
break;
case "status":
mHealthInfo.batteryStatus = Integer.parseInt(value);
break;
case "level":
mHealthInfo.batteryLevel = Integer.parseInt(value);
break;
case "counter":
mHealthInfo.batteryChargeCounter = Integer.parseInt(value);
break;
case "temp":
mHealthInfo.batteryTemperature = Integer.parseInt(value);
break;
case "invalid":
mInvalidCharger = Integer.parseInt(value);
break;
default:
pw.println("Unknown set option: " + key);
update = false;
break;
}
if (update) {
long ident = Binder.clearCallingIdentity();
try {
mUpdatesStopped = true;
processValuesFromShellLocked(pw, opts);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
} catch (NumberFormatException ex) {
pw.println("Bad value: " + value);
return -1;
}
} break;
case "reset": {
int opts = parseOptions(shell);
getContext().enforceCallingOrSelfPermission(
android.Manifest.permission.DEVICE_POWER, null);
long ident = Binder.clearCallingIdentity();
try {
if (mUpdatesStopped) {
mUpdatesStopped = false;
copy(mHealthInfo, mLastHealthInfo);
processValuesFromShellLocked(pw, opts);
}
} finally {
Binder.restoreCallingIdentity(ident);
}
} break;
default:
return shell.handleDefaultCommands(cmd);
}
return 0;
}
private void processValuesFromShellLocked(PrintWriter pw, int opts) {
processValuesLocked((opts & OPTION_FORCE_UPDATE) != 0);
if ((opts & OPTION_FORCE_UPDATE) != 0) {
pw.println(mSequence);
}
}
private void dumpInternal(FileDescriptor fd, PrintWriter pw, String[] args) {
synchronized (mLock) {
if (args == null || args.length == 0 || "-a".equals(args[0])) {
pw.println("Current Battery Service state:");
if (mUpdatesStopped) {
pw.println(" (UPDATES STOPPED -- use 'reset' to restart)");
}
pw.println(" AC powered: " + mHealthInfo.chargerAcOnline);
pw.println(" USB powered: " + mHealthInfo.chargerUsbOnline);
pw.println(" Wireless powered: " + mHealthInfo.chargerWirelessOnline);
pw.println(" Max charging current: " + mHealthInfo.maxChargingCurrent);
pw.println(" Max charging voltage: " + mHealthInfo.maxChargingVoltage);
pw.println(" Charge counter: " + mHealthInfo.batteryChargeCounter);
pw.println(" status: " + mHealthInfo.batteryStatus);
pw.println(" health: " + mHealthInfo.batteryHealth);
pw.println(" present: " + mHealthInfo.batteryPresent);
pw.println(" level: " + mHealthInfo.batteryLevel);
pw.println(" scale: " + BATTERY_SCALE);
pw.println(" voltage: " + mHealthInfo.batteryVoltage);
pw.println(" temperature: " + mHealthInfo.batteryTemperature);
pw.println(" technology: " + mHealthInfo.batteryTechnology);
} else {
Shell shell = new Shell();
shell.exec(mBinderService, null, fd, null, args, null, new ResultReceiver(null));
}
}
}
private void dumpProto(FileDescriptor fd) {
final ProtoOutputStream proto = new ProtoOutputStream(fd);
synchronized (mLock) {
proto.write(BatteryServiceDumpProto.ARE_UPDATES_STOPPED, mUpdatesStopped);
int batteryPluggedValue = OsProtoEnums.BATTERY_PLUGGED_NONE;
if (mHealthInfo.chargerAcOnline) {
batteryPluggedValue = OsProtoEnums.BATTERY_PLUGGED_AC;
} else if (mHealthInfo.chargerUsbOnline) {
batteryPluggedValue = OsProtoEnums.BATTERY_PLUGGED_USB;
} else if (mHealthInfo.chargerWirelessOnline) {
batteryPluggedValue = OsProtoEnums.BATTERY_PLUGGED_WIRELESS;
}
proto.write(BatteryServiceDumpProto.PLUGGED, batteryPluggedValue);
proto.write(BatteryServiceDumpProto.MAX_CHARGING_CURRENT, mHealthInfo.maxChargingCurrent);
proto.write(BatteryServiceDumpProto.MAX_CHARGING_VOLTAGE, mHealthInfo.maxChargingVoltage);
proto.write(BatteryServiceDumpProto.CHARGE_COUNTER, mHealthInfo.batteryChargeCounter);
proto.write(BatteryServiceDumpProto.STATUS, mHealthInfo.batteryStatus);
proto.write(BatteryServiceDumpProto.HEALTH, mHealthInfo.batteryHealth);
proto.write(BatteryServiceDumpProto.IS_PRESENT, mHealthInfo.batteryPresent);
proto.write(BatteryServiceDumpProto.LEVEL, mHealthInfo.batteryLevel);
proto.write(BatteryServiceDumpProto.SCALE, BATTERY_SCALE);
proto.write(BatteryServiceDumpProto.VOLTAGE, mHealthInfo.batteryVoltage);
proto.write(BatteryServiceDumpProto.TEMPERATURE, mHealthInfo.batteryTemperature);
proto.write(BatteryServiceDumpProto.TECHNOLOGY, mHealthInfo.batteryTechnology);
}
proto.flush();
}
private static void traceBegin(String name) {
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, name);
}
private static void traceEnd() {
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
private final class Led {
private final Light mBatteryLight;
private final int mBatteryLowARGB;
private final int mBatteryMediumARGB;
private final int mBatteryFullARGB;
private final int mBatteryLedOn;
private final int mBatteryLedOff;
public Led(Context context, LightsManager lights) {
mBatteryLight = lights.getLight(LightsManager.LIGHT_ID_BATTERY);
mBatteryLowARGB = context.getResources().getInteger(
com.android.internal.R.integer.config_notificationsBatteryLowARGB);
mBatteryMediumARGB = context.getResources().getInteger(
com.android.internal.R.integer.config_notificationsBatteryMediumARGB);
mBatteryFullARGB = context.getResources().getInteger(
com.android.internal.R.integer.config_notificationsBatteryFullARGB);
mBatteryLedOn = context.getResources().getInteger(
com.android.internal.R.integer.config_notificationsBatteryLedOn);
mBatteryLedOff = context.getResources().getInteger(
com.android.internal.R.integer.config_notificationsBatteryLedOff);
}
/**
* Synchronize on BatteryService.
*/
public void updateLightsLocked() {
final int level = mHealthInfo.batteryLevel;
final int status = mHealthInfo.batteryStatus;
if (level < mLowBatteryWarningLevel) {
if (status == BatteryManager.BATTERY_STATUS_CHARGING) {
// Solid red when battery is charging
mBatteryLight.setColor(mBatteryLowARGB);
} else {
// Flash red when battery is low and not charging
mBatteryLight.setFlashing(mBatteryLowARGB, Light.LIGHT_FLASH_TIMED,
mBatteryLedOn, mBatteryLedOff);
}
} else if (status == BatteryManager.BATTERY_STATUS_CHARGING
|| status == BatteryManager.BATTERY_STATUS_FULL) {
if (status == BatteryManager.BATTERY_STATUS_FULL || level >= 90) {
// Solid green when full or charging and nearly full
mBatteryLight.setColor(mBatteryFullARGB);
} else {
// Solid orange when charging and halfway full
mBatteryLight.setColor(mBatteryMediumARGB);
}
} else {
// No lights if not charging and not low
mBatteryLight.turnOff();
}
}
}
private final class HealthHalCallback extends IHealthInfoCallback.Stub
implements HealthServiceWrapper.Callback {
@Override public void healthInfoChanged(android.hardware.health.V2_0.HealthInfo props) {
BatteryService.this.update(props);
}
// on new service registered
@Override public void onRegistration(IHealth oldService, IHealth newService,
String instance) {
if (newService == null) return;
traceBegin("HealthUnregisterCallback");
try {
if (oldService != null) {
int r = oldService.unregisterCallback(this);
if (r != Result.SUCCESS) {
Slog.w(TAG, "health: cannot unregister previous callback: " +
Result.toString(r));
}
}
} catch (RemoteException ex) {
Slog.w(TAG, "health: cannot unregister previous callback (transaction error): "
+ ex.getMessage());
} finally {
traceEnd();
}
traceBegin("HealthRegisterCallback");
try {
int r = newService.registerCallback(this);
if (r != Result.SUCCESS) {
Slog.w(TAG, "health: cannot register callback: " + Result.toString(r));
return;
}
// registerCallback does NOT guarantee that update is called
// immediately, so request a manual update here.
newService.update();
} catch (RemoteException ex) {
Slog.e(TAG, "health: cannot register callback (transaction error): "
+ ex.getMessage());
} finally {
traceEnd();
}
}
}
private final class BinderService extends Binder {
@Override protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
if (!DumpUtils.checkDumpPermission(mContext, TAG, pw)) return;
if (args.length > 0 && "--proto".equals(args[0])) {
dumpProto(fd);
} else {
dumpInternal(fd, pw, args);
}
}
@Override public void onShellCommand(FileDescriptor in, FileDescriptor out,
FileDescriptor err, String[] args, ShellCallback callback,
ResultReceiver resultReceiver) {
(new Shell()).exec(this, in, out, err, args, callback, resultReceiver);
}
}
// Reduced IBatteryPropertiesRegistrar that only implements getProperty for usage
// in BatteryManager.
private final class BatteryPropertiesRegistrar extends IBatteryPropertiesRegistrar.Stub {
public void registerListener(IBatteryPropertiesListener listener) {
Slog.e(TAG, "health: must not call registerListener on battery properties");
}
public void unregisterListener(IBatteryPropertiesListener listener) {
Slog.e(TAG, "health: must not call unregisterListener on battery properties");
}
public int getProperty(int id, final BatteryProperty prop) throws RemoteException {
traceBegin("HealthGetProperty");
try {
IHealth service = mHealthServiceWrapper.getLastService();
if (service == null) throw new RemoteException("no health service");
final MutableInt outResult = new MutableInt(Result.NOT_SUPPORTED);
switch(id) {
case BatteryManager.BATTERY_PROPERTY_CHARGE_COUNTER:
service.getChargeCounter((int result, int value) -> {
outResult.value = result;
if (result == Result.SUCCESS) prop.setLong(value);
});
break;
case BatteryManager.BATTERY_PROPERTY_CURRENT_NOW:
service.getCurrentNow((int result, int value) -> {
outResult.value = result;
if (result == Result.SUCCESS) prop.setLong(value);
});
break;
case BatteryManager.BATTERY_PROPERTY_CURRENT_AVERAGE:
service.getCurrentAverage((int result, int value) -> {
outResult.value = result;
if (result == Result.SUCCESS) prop.setLong(value);
});
break;
case BatteryManager.BATTERY_PROPERTY_CAPACITY:
service.getCapacity((int result, int value) -> {
outResult.value = result;
if (result == Result.SUCCESS) prop.setLong(value);
});
break;
case BatteryManager.BATTERY_PROPERTY_STATUS:
service.getChargeStatus((int result, int value) -> {
outResult.value = result;
if (result == Result.SUCCESS) prop.setLong(value);
});
break;
case BatteryManager.BATTERY_PROPERTY_ENERGY_COUNTER:
service.getEnergyCounter((int result, long value) -> {
outResult.value = result;
if (result == Result.SUCCESS) prop.setLong(value);
});
break;
}
return outResult.value;
} finally {
traceEnd();
}
}
public void scheduleUpdate() throws RemoteException {
traceBegin("HealthScheduleUpdate");
try {
IHealth service = mHealthServiceWrapper.getLastService();
if (service == null) throw new RemoteException("no health service");
service.update();
} finally {
traceEnd();
}
}
}
private final class LocalService extends BatteryManagerInternal {
@Override
public boolean isPowered(int plugTypeSet) {
synchronized (mLock) {
return isPoweredLocked(plugTypeSet);
}
}
@Override
public int getPlugType() {
synchronized (mLock) {
return mPlugType;
}
}
@Override
public int getBatteryLevel() {
synchronized (mLock) {
return mHealthInfo.batteryLevel;
}
}
@Override
public int getBatteryChargeCounter() {
synchronized (mLock) {
return mHealthInfo.batteryChargeCounter;
}
}
@Override
public int getBatteryFullCharge() {
synchronized (mLock) {
return mHealthInfo.batteryFullCharge;
}
}
@Override
public boolean getBatteryLevelLow() {
synchronized (mLock) {
return mBatteryLevelLow;
}
}
@Override
public int getInvalidCharger() {
synchronized (mLock) {
return mInvalidCharger;
}
}
}
/**
* HealthServiceWrapper wraps the internal IHealth service and refreshes the service when
* necessary.
*
* On new registration of IHealth service, {@link #onRegistration onRegistration} is called and
* the internal service is refreshed.
* On death of an existing IHealth service, the internal service is NOT cleared to avoid
* race condition between death notification and new service notification. Hence,
* a caller must check for transaction errors when calling into the service.
*
* @hide Should only be used internally.
*/
@VisibleForTesting
static final class HealthServiceWrapper {
private static final String TAG = "HealthServiceWrapper";
public static final String INSTANCE_HEALTHD = "backup";
public static final String INSTANCE_VENDOR = "default";
// All interesting instances, sorted by priority high -> low.
private static final List<String> sAllInstances =
Arrays.asList(INSTANCE_VENDOR, INSTANCE_HEALTHD);
private final IServiceNotification mNotification = new Notification();
private final HandlerThread mHandlerThread = new HandlerThread("HealthServiceRefresh");
// These variables are fixed after init.
private Callback mCallback;
private IHealthSupplier mHealthSupplier;
private String mInstanceName;
// Last IHealth service received.
private final AtomicReference<IHealth> mLastService = new AtomicReference<>();
/**
* init should be called after constructor. For testing purposes, init is not called by
* constructor.
*/
HealthServiceWrapper() {
}
IHealth getLastService() {
return mLastService.get();
}
/**
* Start monitoring registration of new IHealth services. Only instances that are in
* {@code sAllInstances} and in device / framework manifest are used. This function should
* only be called once.
*
* mCallback.onRegistration() is called synchronously (aka in init thread) before
* this method returns.
*
* @throws RemoteException transaction error when talking to IServiceManager
* @throws NoSuchElementException if one of the following cases:
* - No service manager;
* - none of {@code sAllInstances} are in manifests (i.e. not
* available on this device), or none of these instances are available to current
* process.
* @throws NullPointerException when callback is null or supplier is null
*/
void init(Callback callback,
IServiceManagerSupplier managerSupplier,
IHealthSupplier healthSupplier)
throws RemoteException, NoSuchElementException, NullPointerException {
if (callback == null || managerSupplier == null || healthSupplier == null)
throw new NullPointerException();
IServiceManager manager;
mCallback = callback;
mHealthSupplier = healthSupplier;
// Initialize mLastService and call callback for the first time (in init thread)
IHealth newService = null;
for (String name : sAllInstances) {
traceBegin("HealthInitGetService_" + name);
try {
newService = healthSupplier.get(name);
} catch (NoSuchElementException ex) {
/* ignored, handled below */
} finally {
traceEnd();
}
if (newService != null) {
mInstanceName = name;
mLastService.set(newService);
break;
}
}
if (mInstanceName == null || newService == null) {
throw new NoSuchElementException(String.format(
"No IHealth service instance among %s is available. Perhaps no permission?",
sAllInstances.toString()));
}
mCallback.onRegistration(null, newService, mInstanceName);
// Register for future service registrations
traceBegin("HealthInitRegisterNotification");
mHandlerThread.start();
try {
managerSupplier.get().registerForNotifications(
IHealth.kInterfaceName, mInstanceName, mNotification);
} finally {
traceEnd();
}
Slog.i(TAG, "health: HealthServiceWrapper listening to instance " + mInstanceName);
}
@VisibleForTesting
HandlerThread getHandlerThread() {
return mHandlerThread;
}
interface Callback {
/**
* This function is invoked asynchronously when a new and related IServiceNotification
* is received.
* @param service the recently retrieved service from IServiceManager.
* Can be a dead service before service notification of a new service is delivered.
* Implementation must handle cases for {@link RemoteException}s when calling
* into service.
* @param instance instance name.
*/
void onRegistration(IHealth oldService, IHealth newService, String instance);
}
/**
* Supplier of services.
* Must not return null; throw {@link NoSuchElementException} if a service is not available.
*/
interface IServiceManagerSupplier {
default IServiceManager get() throws NoSuchElementException, RemoteException {
return IServiceManager.getService();
}
}
/**
* Supplier of services.
* Must not return null; throw {@link NoSuchElementException} if a service is not available.
*/
interface IHealthSupplier {
default IHealth get(String name) throws NoSuchElementException, RemoteException {
return IHealth.getService(name, true /* retry */);
}
}
private class Notification extends IServiceNotification.Stub {
@Override
public final void onRegistration(String interfaceName, String instanceName,
boolean preexisting) {
if (!IHealth.kInterfaceName.equals(interfaceName)) return;
if (!mInstanceName.equals(instanceName)) return;
// This runnable only runs on mHandlerThread and ordering is ensured, hence
// no locking is needed inside the runnable.
mHandlerThread.getThreadHandler().post(new Runnable() {
@Override
public void run() {
try {
IHealth newService = mHealthSupplier.get(mInstanceName);
IHealth oldService = mLastService.getAndSet(newService);
// preexisting may be inaccurate (race). Check for equality here.
if (Objects.equals(newService, oldService)) return;
Slog.i(TAG, "health: new instance registered " + mInstanceName);
mCallback.onRegistration(oldService, newService, mInstanceName);
} catch (NoSuchElementException | RemoteException ex) {
Slog.e(TAG, "health: Cannot get instance '" + mInstanceName
+ "': " + ex.getMessage() + ". Perhaps no permission?");
}
}
});
}
}
}
}