| /* |
| * Copyright (C) 2014 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.job.controllers; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.os.BatteryManager; |
| import android.os.BatteryManagerInternal; |
| import android.os.SystemClock; |
| import android.os.UserHandle; |
| import android.util.ArraySet; |
| import android.util.Slog; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.server.LocalServices; |
| import com.android.server.job.JobSchedulerService; |
| import com.android.server.job.StateChangedListener; |
| |
| import java.io.PrintWriter; |
| |
| /** |
| * Simple controller that tracks whether the phone is charging or not. The phone is considered to |
| * be charging when it's been plugged in for more than two minutes, and the system has broadcast |
| * ACTION_BATTERY_OK. |
| */ |
| public final class BatteryController extends StateController { |
| private static final String TAG = "JobScheduler.Batt"; |
| |
| private static final Object sCreationLock = new Object(); |
| private static volatile BatteryController sController; |
| |
| private final ArraySet<JobStatus> mTrackedTasks = new ArraySet<>(); |
| private ChargingTracker mChargeTracker; |
| |
| public static BatteryController get(JobSchedulerService taskManagerService) { |
| synchronized (sCreationLock) { |
| if (sController == null) { |
| sController = new BatteryController(taskManagerService, |
| taskManagerService.getContext(), taskManagerService.getLock()); |
| } |
| } |
| return sController; |
| } |
| |
| @VisibleForTesting |
| public ChargingTracker getTracker() { |
| return mChargeTracker; |
| } |
| |
| @VisibleForTesting |
| public static BatteryController getForTesting(StateChangedListener stateChangedListener, |
| Context context) { |
| return new BatteryController(stateChangedListener, context, new Object()); |
| } |
| |
| private BatteryController(StateChangedListener stateChangedListener, Context context, |
| Object lock) { |
| super(stateChangedListener, context, lock); |
| mChargeTracker = new ChargingTracker(); |
| mChargeTracker.startTracking(); |
| } |
| |
| @Override |
| public void maybeStartTrackingJobLocked(JobStatus taskStatus, JobStatus lastJob) { |
| if (taskStatus.hasPowerConstraint()) { |
| mTrackedTasks.add(taskStatus); |
| taskStatus.setTrackingController(JobStatus.TRACKING_BATTERY); |
| taskStatus.setChargingConstraintSatisfied(mChargeTracker.isOnStablePower()); |
| taskStatus.setBatteryNotLowConstraintSatisfied(mChargeTracker.isBatteryNotLow()); |
| } |
| } |
| |
| @Override |
| public void maybeStopTrackingJobLocked(JobStatus taskStatus, JobStatus incomingJob, boolean forUpdate) { |
| if (taskStatus.clearTrackingController(JobStatus.TRACKING_BATTERY)) { |
| mTrackedTasks.remove(taskStatus); |
| } |
| } |
| |
| private void maybeReportNewChargingStateLocked() { |
| final boolean stablePower = mChargeTracker.isOnStablePower(); |
| final boolean batteryNotLow = mChargeTracker.isBatteryNotLow(); |
| if (DEBUG) { |
| Slog.d(TAG, "maybeReportNewChargingStateLocked: " + stablePower); |
| } |
| boolean reportChange = false; |
| for (int i = mTrackedTasks.size() - 1; i >= 0; i--) { |
| final JobStatus ts = mTrackedTasks.valueAt(i); |
| boolean previous = ts.setChargingConstraintSatisfied(stablePower); |
| if (previous != stablePower) { |
| reportChange = true; |
| } |
| previous = ts.setBatteryNotLowConstraintSatisfied(batteryNotLow); |
| if (previous != batteryNotLow) { |
| reportChange = true; |
| } |
| } |
| if (stablePower || batteryNotLow) { |
| // If one of our conditions has been satisfied, always schedule any newly ready jobs. |
| mStateChangedListener.onRunJobNow(null); |
| } else if (reportChange) { |
| // Otherwise, just let the job scheduler know the state has changed and take care of it |
| // as it thinks is best. |
| mStateChangedListener.onControllerStateChanged(); |
| } |
| } |
| |
| public final class ChargingTracker extends BroadcastReceiver { |
| /** |
| * Track whether we're "charging", where charging means that we're ready to commit to |
| * doing work. |
| */ |
| private boolean mCharging; |
| /** Keep track of whether the battery is charged enough that we want to do work. */ |
| private boolean mBatteryHealthy; |
| /** Sequence number of last broadcast. */ |
| private int mLastBatterySeq = -1; |
| |
| private BroadcastReceiver mMonitor; |
| |
| public ChargingTracker() { |
| } |
| |
| public void startTracking() { |
| IntentFilter filter = new IntentFilter(); |
| |
| // Battery health. |
| filter.addAction(Intent.ACTION_BATTERY_LOW); |
| filter.addAction(Intent.ACTION_BATTERY_OKAY); |
| // Charging/not charging. |
| filter.addAction(BatteryManager.ACTION_CHARGING); |
| filter.addAction(BatteryManager.ACTION_DISCHARGING); |
| mContext.registerReceiver(this, filter); |
| |
| // Initialise tracker state. |
| BatteryManagerInternal batteryManagerInternal = |
| LocalServices.getService(BatteryManagerInternal.class); |
| mBatteryHealthy = !batteryManagerInternal.getBatteryLevelLow(); |
| mCharging = batteryManagerInternal.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); |
| } |
| |
| public void setMonitorBatteryLocked(boolean enabled) { |
| if (enabled) { |
| if (mMonitor == null) { |
| mMonitor = new BroadcastReceiver() { |
| @Override public void onReceive(Context context, Intent intent) { |
| ChargingTracker.this.onReceive(context, intent); |
| } |
| }; |
| IntentFilter filter = new IntentFilter(); |
| filter.addAction(Intent.ACTION_BATTERY_CHANGED); |
| mContext.registerReceiver(mMonitor, filter); |
| } |
| } else { |
| if (mMonitor != null) { |
| mContext.unregisterReceiver(mMonitor); |
| mMonitor = null; |
| } |
| } |
| } |
| |
| public boolean isOnStablePower() { |
| return mCharging && mBatteryHealthy; |
| } |
| |
| public boolean isBatteryNotLow() { |
| return mBatteryHealthy; |
| } |
| |
| public boolean isMonitoring() { |
| return mMonitor != null; |
| } |
| |
| public int getSeq() { |
| return mLastBatterySeq; |
| } |
| |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| onReceiveInternal(intent); |
| } |
| |
| @VisibleForTesting |
| public void onReceiveInternal(Intent intent) { |
| synchronized (mLock) { |
| final String action = intent.getAction(); |
| if (Intent.ACTION_BATTERY_LOW.equals(action)) { |
| if (DEBUG) { |
| Slog.d(TAG, "Battery life too low to do work. @ " |
| + SystemClock.elapsedRealtime()); |
| } |
| // If we get this action, the battery is discharging => it isn't plugged in so |
| // there's no work to cancel. We track this variable for the case where it is |
| // charging, but hasn't been for long enough to be healthy. |
| mBatteryHealthy = false; |
| maybeReportNewChargingStateLocked(); |
| } else if (Intent.ACTION_BATTERY_OKAY.equals(action)) { |
| if (DEBUG) { |
| Slog.d(TAG, "Battery life healthy enough to do work. @ " |
| + SystemClock.elapsedRealtime()); |
| } |
| mBatteryHealthy = true; |
| maybeReportNewChargingStateLocked(); |
| } else if (BatteryManager.ACTION_CHARGING.equals(action)) { |
| if (DEBUG) { |
| Slog.d(TAG, "Received charging intent, fired @ " |
| + SystemClock.elapsedRealtime()); |
| } |
| mCharging = true; |
| maybeReportNewChargingStateLocked(); |
| } else if (BatteryManager.ACTION_DISCHARGING.equals(action)) { |
| if (DEBUG) { |
| Slog.d(TAG, "Disconnected from power."); |
| } |
| mCharging = false; |
| maybeReportNewChargingStateLocked(); |
| } |
| mLastBatterySeq = intent.getIntExtra(BatteryManager.EXTRA_SEQUENCE, |
| mLastBatterySeq); |
| } |
| } |
| } |
| |
| @Override |
| public void dumpControllerStateLocked(PrintWriter pw, int filterUid) { |
| pw.print("Battery: stable power = "); |
| pw.print(mChargeTracker.isOnStablePower()); |
| pw.print(", not low = "); |
| pw.println(mChargeTracker.isBatteryNotLow()); |
| if (mChargeTracker.isMonitoring()) { |
| pw.print("MONITORING: seq="); |
| pw.println(mChargeTracker.getSeq()); |
| } |
| pw.print("Tracking "); |
| pw.print(mTrackedTasks.size()); |
| pw.println(":"); |
| for (int i = 0; i < mTrackedTasks.size(); i++) { |
| final JobStatus js = mTrackedTasks.valueAt(i); |
| if (!js.shouldDump(filterUid)) { |
| continue; |
| } |
| pw.print(" #"); |
| js.printUniqueId(pw); |
| pw.print(" from "); |
| UserHandle.formatUid(pw, js.getSourceUid()); |
| pw.println(); |
| } |
| } |
| } |