402 lines
17 KiB
Java
402 lines
17 KiB
Java
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/*
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* Copyright (C) 2006 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server;
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import com.android.internal.app.IBatteryStats;
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import com.android.server.am.BatteryStatsService;
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import android.app.ActivityManagerNative;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.os.BatteryManager;
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import android.os.Binder;
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import android.os.Debug;
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import android.os.IBinder;
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import android.os.RemoteException;
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import android.os.ServiceManager;
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import android.os.SystemClock;
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import android.os.UEventObserver;
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import android.provider.Checkin;
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import android.provider.Settings;
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import android.util.EventLog;
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import android.util.Log;
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import java.io.File;
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import java.io.FileDescriptor;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.PrintWriter;
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/**
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* <p>BatteryService monitors the charging status, and charge level of the device
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* battery. When these values change this service broadcasts the new values
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* to all {@link android.content.BroadcastReceiver IntentReceivers} that are
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* watching the {@link android.content.Intent#ACTION_BATTERY_CHANGED
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* BATTERY_CHANGED} action.</p>
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* <p>The new values are stored in the Intent data and can be retrieved by
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* calling {@link android.content.Intent#getExtra Intent.getExtra} with the
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* following keys:</p>
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* <p>"scale" - int, the maximum value for the charge level</p>
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* <p>"level" - int, charge level, from 0 through "scale" inclusive</p>
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* <p>"status" - String, the current charging status.<br />
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* <p>"health" - String, the current battery health.<br />
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* <p>"present" - boolean, true if the battery is present<br />
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* <p>"icon-small" - int, suggested small icon to use for this state</p>
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* <p>"plugged" - int, 0 if the device is not plugged in; 1 if plugged
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* into an AC power adapter; 2 if plugged in via USB.</p>
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* <p>"voltage" - int, current battery voltage in millivolts</p>
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* <p>"temperature" - int, current battery temperature in tenths of
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* a degree Centigrade</p>
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* <p>"technology" - String, the type of battery installed, e.g. "Li-ion"</p>
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*/
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class BatteryService extends Binder {
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private static final String TAG = BatteryService.class.getSimpleName();
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private static final boolean LOCAL_LOGV = false;
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static final int LOG_BATTERY_LEVEL = 2722;
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static final int LOG_BATTERY_STATUS = 2723;
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static final int LOG_BATTERY_DISCHARGE_STATUS = 2730;
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static final int BATTERY_SCALE = 100; // battery capacity is a percentage
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// Used locally for determining when to make a last ditch effort to log
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// discharge stats before the device dies.
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private static final int CRITICAL_BATTERY_LEVEL = 4;
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private static final int DUMP_MAX_LENGTH = 24 * 1024;
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private static final String[] DUMPSYS_ARGS = new String[] { "-c", "-u" };
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private static final String BATTERY_STATS_SERVICE_NAME = "batteryinfo";
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private static final String DUMPSYS_DATA_PATH = "/data/system/";
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// This should probably be exposed in the API, though it's not critical
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private static final int BATTERY_PLUGGED_NONE = 0;
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private final Context mContext;
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private final IBatteryStats mBatteryStats;
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private boolean mAcOnline;
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private boolean mUsbOnline;
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private int mBatteryStatus;
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private int mBatteryHealth;
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private boolean mBatteryPresent;
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private int mBatteryLevel;
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private int mBatteryVoltage;
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private int mBatteryTemperature;
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private String mBatteryTechnology;
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private boolean mBatteryLevelCritical;
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private int mLastBatteryStatus;
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private int mLastBatteryHealth;
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private boolean mLastBatteryPresent;
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private int mLastBatteryLevel;
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private int mLastBatteryVoltage;
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private int mLastBatteryTemperature;
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private boolean mLastBatteryLevelCritical;
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private int mPlugType;
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private int mLastPlugType = -1; // Extra state so we can detect first run
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private long mDischargeStartTime;
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private int mDischargeStartLevel;
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public BatteryService(Context context) {
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mContext = context;
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mBatteryStats = BatteryStatsService.getService();
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mUEventObserver.startObserving("SUBSYSTEM=power_supply");
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// set initial status
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update();
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}
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final boolean isPowered() {
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// assume we are powered if battery state is unknown so the "stay on while plugged in" option will work.
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return (mAcOnline || mUsbOnline || mBatteryStatus == BatteryManager.BATTERY_STATUS_UNKNOWN);
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}
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final boolean isPowered(int plugTypeSet) {
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// assume we are powered if battery state is unknown so
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// the "stay on while plugged in" option will work.
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if (mBatteryStatus == BatteryManager.BATTERY_STATUS_UNKNOWN) {
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return true;
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}
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if (plugTypeSet == 0) {
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return false;
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}
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int plugTypeBit = 0;
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if (mAcOnline) {
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plugTypeBit |= BatteryManager.BATTERY_PLUGGED_AC;
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}
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if (mUsbOnline) {
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plugTypeBit |= BatteryManager.BATTERY_PLUGGED_USB;
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}
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return (plugTypeSet & plugTypeBit) != 0;
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}
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final int getPlugType() {
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return mPlugType;
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}
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private UEventObserver mUEventObserver = new UEventObserver() {
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@Override
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public void onUEvent(UEventObserver.UEvent event) {
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update();
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}
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};
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// returns battery level as a percentage
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final int getBatteryLevel() {
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return mBatteryLevel;
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}
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private native void native_update();
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private synchronized final void update() {
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native_update();
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mBatteryLevelCritical = mBatteryLevel <= CRITICAL_BATTERY_LEVEL;
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if (mAcOnline) {
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mPlugType = BatteryManager.BATTERY_PLUGGED_AC;
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} else if (mUsbOnline) {
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mPlugType = BatteryManager.BATTERY_PLUGGED_USB;
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} else {
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mPlugType = BATTERY_PLUGGED_NONE;
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}
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if (mBatteryStatus != mLastBatteryStatus ||
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mBatteryHealth != mLastBatteryHealth ||
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mBatteryPresent != mLastBatteryPresent ||
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mBatteryLevel != mLastBatteryLevel ||
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mPlugType != mLastPlugType ||
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mBatteryVoltage != mLastBatteryVoltage ||
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mBatteryTemperature != mLastBatteryTemperature) {
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if (mPlugType != mLastPlugType) {
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if (mLastPlugType == BATTERY_PLUGGED_NONE) {
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// discharging -> charging
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// There's no value in this data unless we've discharged at least once and the
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// battery level has changed; so don't log until it does.
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if (mDischargeStartTime != 0 && mDischargeStartLevel != mBatteryLevel) {
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long duration = SystemClock.elapsedRealtime() - mDischargeStartTime;
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EventLog.writeEvent(LOG_BATTERY_DISCHARGE_STATUS, duration,
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mDischargeStartLevel, mBatteryLevel);
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// make sure we see a discharge event before logging again
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mDischargeStartTime = 0;
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logOutlier(duration);
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}
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} else if (mPlugType == BATTERY_PLUGGED_NONE) {
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// charging -> discharging or we just powered up
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mDischargeStartTime = SystemClock.elapsedRealtime();
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mDischargeStartLevel = mBatteryLevel;
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}
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}
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if (mBatteryStatus != mLastBatteryStatus ||
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mBatteryHealth != mLastBatteryHealth ||
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mBatteryPresent != mLastBatteryPresent ||
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mPlugType != mLastPlugType) {
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EventLog.writeEvent(LOG_BATTERY_STATUS,
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mBatteryStatus, mBatteryHealth, mBatteryPresent ? 1 : 0,
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mPlugType, mBatteryTechnology);
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}
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if (mBatteryLevel != mLastBatteryLevel ||
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mBatteryVoltage != mLastBatteryVoltage ||
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mBatteryTemperature != mLastBatteryTemperature) {
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EventLog.writeEvent(LOG_BATTERY_LEVEL,
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mBatteryLevel, mBatteryVoltage, mBatteryTemperature);
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}
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if (mBatteryLevelCritical && !mLastBatteryLevelCritical &&
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mPlugType == BATTERY_PLUGGED_NONE) {
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// We want to make sure we log discharge cycle outliers
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// if the battery is about to die.
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logOutlier(SystemClock.elapsedRealtime() - mDischargeStartTime);
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}
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mLastBatteryStatus = mBatteryStatus;
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mLastBatteryHealth = mBatteryHealth;
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mLastBatteryPresent = mBatteryPresent;
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mLastBatteryLevel = mBatteryLevel;
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mLastPlugType = mPlugType;
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mLastBatteryVoltage = mBatteryVoltage;
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mLastBatteryTemperature = mBatteryTemperature;
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mLastBatteryLevelCritical = mBatteryLevelCritical;
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sendIntent();
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}
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}
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private final void sendIntent() {
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// Pack up the values and broadcast them to everyone
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Intent intent = new Intent(Intent.ACTION_BATTERY_CHANGED);
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intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
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try {
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mBatteryStats.setOnBattery(mPlugType == BATTERY_PLUGGED_NONE);
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} catch (RemoteException e) {
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// Should never happen.
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}
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int icon = getIcon(mBatteryLevel);
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intent.putExtra("status", mBatteryStatus);
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intent.putExtra("health", mBatteryHealth);
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intent.putExtra("present", mBatteryPresent);
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intent.putExtra("level", mBatteryLevel);
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intent.putExtra("scale", BATTERY_SCALE);
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intent.putExtra("icon-small", icon);
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intent.putExtra("plugged", mPlugType);
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intent.putExtra("voltage", mBatteryVoltage);
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intent.putExtra("temperature", mBatteryTemperature);
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intent.putExtra("technology", mBatteryTechnology);
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if (false) {
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Log.d(TAG, "updateBattery level:" + mBatteryLevel +
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" scale:" + BATTERY_SCALE + " status:" + mBatteryStatus +
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" health:" + mBatteryHealth + " present:" + mBatteryPresent +
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" voltage: " + mBatteryVoltage +
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" temperature: " + mBatteryTemperature +
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" technology: " + mBatteryTechnology +
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" AC powered:" + mAcOnline + " USB powered:" + mUsbOnline +
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" icon:" + icon );
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}
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ActivityManagerNative.broadcastStickyIntent(intent, null);
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}
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private final void logBatteryStats() {
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IBinder batteryInfoService = ServiceManager.getService(BATTERY_STATS_SERVICE_NAME);
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if (batteryInfoService != null) {
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byte[] buffer = new byte[DUMP_MAX_LENGTH];
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File dumpFile = null;
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FileOutputStream dumpStream = null;
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try {
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// dump the service to a file
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dumpFile = new File(DUMPSYS_DATA_PATH + BATTERY_STATS_SERVICE_NAME + ".dump");
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dumpStream = new FileOutputStream(dumpFile);
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batteryInfoService.dump(dumpStream.getFD(), DUMPSYS_ARGS);
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dumpStream.getFD().sync();
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// read dumped file above into buffer truncated to DUMP_MAX_LENGTH
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// and insert into events table.
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int length = (int) Math.min(dumpFile.length(), DUMP_MAX_LENGTH);
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FileInputStream fileInputStream = new FileInputStream(dumpFile);
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int nread = fileInputStream.read(buffer, 0, length);
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if (nread > 0) {
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Checkin.logEvent(mContext.getContentResolver(),
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Checkin.Events.Tag.BATTERY_DISCHARGE_INFO,
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new String(buffer, 0, nread));
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if (LOCAL_LOGV) Log.v(TAG, "dumped " + nread + "b from " +
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batteryInfoService + "to log");
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if (LOCAL_LOGV) Log.v(TAG, "actual dump:" + new String(buffer, 0, nread));
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}
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} catch (RemoteException e) {
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Log.e(TAG, "failed to dump service '" + BATTERY_STATS_SERVICE_NAME +
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"':" + e);
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} catch (IOException e) {
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Log.e(TAG, "failed to write dumpsys file: " + e);
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} finally {
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// make sure we clean up
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if (dumpStream != null) {
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try {
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dumpStream.close();
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} catch (IOException e) {
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Log.e(TAG, "failed to close dumpsys output stream");
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}
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}
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if (dumpFile != null && !dumpFile.delete()) {
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Log.e(TAG, "failed to delete temporary dumpsys file: "
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+ dumpFile.getAbsolutePath());
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}
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}
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}
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}
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private final void logOutlier(long duration) {
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ContentResolver cr = mContext.getContentResolver();
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String dischargeThresholdString = Settings.Gservices.getString(cr,
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Settings.Gservices.BATTERY_DISCHARGE_THRESHOLD);
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String durationThresholdString = Settings.Gservices.getString(cr,
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Settings.Gservices.BATTERY_DISCHARGE_DURATION_THRESHOLD);
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if (dischargeThresholdString != null && durationThresholdString != null) {
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try {
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long durationThreshold = Long.parseLong(durationThresholdString);
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int dischargeThreshold = Integer.parseInt(dischargeThresholdString);
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if (duration <= durationThreshold &&
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mDischargeStartLevel - mBatteryLevel >= dischargeThreshold) {
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// If the discharge cycle is bad enough we want to know about it.
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logBatteryStats();
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}
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if (LOCAL_LOGV) Log.v(TAG, "duration threshold: " + durationThreshold +
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" discharge threshold: " + dischargeThreshold);
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if (LOCAL_LOGV) Log.v(TAG, "duration: " + duration + " discharge: " +
|
||
|
|
(mDischargeStartLevel - mBatteryLevel));
|
||
|
|
} catch (NumberFormatException e) {
|
||
|
|
Log.e(TAG, "Invalid DischargeThresholds GService string: " +
|
||
|
|
durationThresholdString + " or " + dischargeThresholdString);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private final int getIcon(int level) {
|
||
|
|
if (mBatteryStatus == BatteryManager.BATTERY_STATUS_CHARGING) {
|
||
|
|
return com.android.internal.R.drawable.stat_sys_battery_charge;
|
||
|
|
} else if (mBatteryStatus == BatteryManager.BATTERY_STATUS_DISCHARGING ||
|
||
|
|
mBatteryStatus == BatteryManager.BATTERY_STATUS_NOT_CHARGING ||
|
||
|
|
mBatteryStatus == BatteryManager.BATTERY_STATUS_FULL) {
|
||
|
|
return com.android.internal.R.drawable.stat_sys_battery;
|
||
|
|
} else {
|
||
|
|
return com.android.internal.R.drawable.stat_sys_battery_unknown;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override
|
||
|
|
protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
|
||
|
|
if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP)
|
||
|
|
!= PackageManager.PERMISSION_GRANTED) {
|
||
|
|
|
||
|
|
pw.println("Permission Denial: can't dump Battery service from from pid="
|
||
|
|
+ Binder.getCallingPid()
|
||
|
|
+ ", uid=" + Binder.getCallingUid());
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
synchronized (this) {
|
||
|
|
pw.println("Current Battery Service state:");
|
||
|
|
pw.println(" AC powered: " + mAcOnline);
|
||
|
|
pw.println(" USB powered: " + mUsbOnline);
|
||
|
|
pw.println(" status: " + mBatteryStatus);
|
||
|
|
pw.println(" health: " + mBatteryHealth);
|
||
|
|
pw.println(" present: " + mBatteryPresent);
|
||
|
|
pw.println(" level: " + mBatteryLevel);
|
||
|
|
pw.println(" scale: " + BATTERY_SCALE);
|
||
|
|
pw.println(" voltage:" + mBatteryVoltage);
|
||
|
|
pw.println(" temperature: " + mBatteryTemperature);
|
||
|
|
pw.println(" technology: " + mBatteryTechnology);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|