PowerManagerService.java revision 4590e52f3d0558e01322fe4dd55bb612afdfb079
1413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber/* 2413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * Copyright (C) 2007 The Android Open Source Project 3413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * 4413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 5413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * you may not use this file except in compliance with the License. 6413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * You may obtain a copy of the License at 7413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * 8413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * http://www.apache.org/licenses/LICENSE-2.0 9413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * 10413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * Unless required by applicable law or agreed to in writing, software 11413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 12413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * See the License for the specific language governing permissions and 14413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber * limitations under the License. 15413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber */ 16413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 17413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberpackage com.android.server.power; 18413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 191f7d356fa094b975ad2ebf9217be6abba2c70825Mathias Agopianimport com.android.internal.app.IAppOpsService; 20413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport com.android.internal.app.IBatteryStats; 21413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport com.android.server.BatteryService; 22413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport com.android.server.EventLogTags; 23413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport com.android.server.LocalServices; 24413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport com.android.server.ServiceThread; 25413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport com.android.server.lights.Light; 26413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport com.android.server.lights.LightsManager; 27413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport com.android.server.twilight.TwilightManager; 28413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport com.android.server.Watchdog; 29413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 30413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.Manifest; 31413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.content.BroadcastReceiver; 32413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.content.ContentResolver; 33413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.content.Context; 34413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.content.Intent; 35413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.content.IntentFilter; 36413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.content.pm.PackageManager; 37413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.content.res.Resources; 38413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.database.ContentObserver; 39413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.hardware.SensorManager; 40413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.hardware.SystemSensorManager; 41413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.hardware.display.DisplayManagerInternal; 42413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.net.Uri; 43413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.os.BatteryManager; 44413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.os.Binder; 45413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.os.Handler; 46413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.os.IBinder; 47413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.os.IPowerManager; 48413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.os.Looper; 49413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.os.Message; 50413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.os.PowerManager; 51413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.os.PowerManagerInternal; 52413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.os.Process; 53413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.os.RemoteException; 54413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.os.SystemClock; 55413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.os.SystemProperties; 56413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.os.SystemService; 57413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.os.UserHandle; 58413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.os.WorkSource; 59413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.provider.Settings; 60413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.service.dreams.DreamManagerInternal; 61413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.util.EventLog; 62413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.util.Log; 63413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.util.Slog; 64413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huberimport android.util.TimeUtils; 657188e55f54a43c55fd6b96454720c447f1dc454eJeff Brownimport android.view.WindowManagerPolicy; 66413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 67b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissenimport java.io.FileDescriptor; 68b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissenimport java.io.PrintWriter; 69b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissenimport java.util.ArrayList; 70b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen 71b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissenimport libcore.util.Objects; 72b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen 73b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen/** 74b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen * The power manager service is responsible for coordinating power management 75b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen * functions on the device. 76b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen */ 77b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissenpublic final class PowerManagerService extends com.android.server.SystemService 78b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen implements Watchdog.Monitor { 79413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final String TAG = "PowerManagerService"; 80413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 81b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen private static final boolean DEBUG = false; 82b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen private static final boolean DEBUG_SPEW = DEBUG && true; 83b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen 84b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen // Message: Sent when a user activity timeout occurs to update the power state. 85153cefdf4acab25355f590d7760ebf73ef6096a9Marco Nelissen private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 86b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen // Message: Sent when the device enters or exits a dreaming or dozing state. 87b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen private static final int MSG_SANDMAN = 2; 88413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Message: Sent when the screen on blocker is released. 89413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 90413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Message: Sent to poll whether the boot animation has terminated. 91413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 92413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 93413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Dirty bit: mWakeLocks changed 94413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int DIRTY_WAKE_LOCKS = 1 << 0; 95413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Dirty bit: mWakefulness changed 96413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int DIRTY_WAKEFULNESS = 1 << 1; 97413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Dirty bit: user activity was poked or may have timed out 98413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int DIRTY_USER_ACTIVITY = 1 << 2; 99413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Dirty bit: actual display power state was updated asynchronously 100413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 101413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Dirty bit: mBootCompleted changed 102413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 103413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Dirty bit: settings changed 104413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int DIRTY_SETTINGS = 1 << 5; 105413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Dirty bit: mIsPowered changed 106413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int DIRTY_IS_POWERED = 1 << 6; 107413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Dirty bit: mStayOn changed 108413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int DIRTY_STAY_ON = 1 << 7; 109413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Dirty bit: battery state changed 110413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int DIRTY_BATTERY_STATE = 1 << 8; 111413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Dirty bit: proximity state changed 112413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 113413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Dirty bit: screen on blocker state became held or unheld 114413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 115413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Dirty bit: dock state changed 116413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int DIRTY_DOCK_STATE = 1 << 11; 117413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 118413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 119413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // The screen should be off or in the process of being turned off by the display controller. 120413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // The device typically passes through the dozing state first. 121413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int WAKEFULNESS_ASLEEP = 0; 122413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 123413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // When the user activity timeout expires, the device may start dreaming or go to sleep. 124413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int WAKEFULNESS_AWAKE = 1; 125413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 126413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // which ends the dream. The device goes to sleep when goToSleep() is called, when 127413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // the dream ends or when unplugged. 128413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // User activity may brighten the screen but does not end the dream. 129413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int WAKEFULNESS_DREAMING = 2; 130413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 131413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // low-power "doze" dream to run which keeps the display on but lets the application 132413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 133413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // The device fully goes to sleep if the dream cannot be started or ends on its own. 134413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int WAKEFULNESS_DOZING = 3; 135413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 136413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Summarizes the state of all active wakelocks. 137413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int WAKE_LOCK_CPU = 1 << 0; 138413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 139413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 140413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 141413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 142413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 143413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int WAKE_LOCK_DOZE = 1 << 6; 144413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 14590bebef5669a9385c706b042d146a31dca2e5d9bGlenn Kasten // Summarizes the user activity state. 146413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 147413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 148413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 149413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Default and minimum screen off timeout in milliseconds. 15090bebef5669a9385c706b042d146a31dca2e5d9bGlenn Kasten private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 151413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int MINIMUM_SCREEN_OFF_TIMEOUT = 10 * 1000; 152413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 153413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // The screen dim duration, in milliseconds. 154413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // This is subtracted from the end of the screen off timeout so the 155413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // minimum screen off timeout should be longer than this. 156413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int SCREEN_DIM_DURATION = 7 * 1000; 157413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 158413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // The maximum screen dim time expressed as a ratio relative to the screen 159413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // off timeout. If the screen off timeout is very short then we want the 160413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // dim timeout to also be quite short so that most of the time is spent on. 161413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Otherwise the user won't get much screen on time before dimming occurs. 162413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final float MAXIMUM_SCREEN_DIM_RATIO = 0.2f; 163413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 164413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // The name of the boot animation service in init.rc. 165413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 166413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 167413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Poll interval in milliseconds for watching boot animation finished. 168413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 169413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 170413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private final Context mContext; 171413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private LightsManager mLightsManager; 172413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private BatteryService mBatteryService; 173413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private DisplayManagerInternal mDisplayManagerInternal; 174413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private IBatteryStats mBatteryStats; 175413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private IAppOpsService mAppOps; 17683bc7f3cf78b28a818417f40a4f0c00593993366Glenn Kasten private ServiceThread mHandlerThread; 177413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private PowerManagerHandler mHandler; 178413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private WindowManagerPolicy mPolicy; 179413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private Notifier mNotifier; 180413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private DisplayPowerController mDisplayPowerController; 181413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private WirelessChargerDetector mWirelessChargerDetector; 182413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private SettingsObserver mSettingsObserver; 183413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private DreamManagerInternal mDreamManager; 18490bebef5669a9385c706b042d146a31dca2e5d9bGlenn Kasten private Light mAttentionLight; 185413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 186413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private final Object mLock = new Object(); 187413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 188413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // A bitfield that indicates what parts of the power state have 189413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // changed and need to be recalculated. 190413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private int mDirty; 191413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 192413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Indicates whether the device is awake or asleep or somewhere in between. 193413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // This is distinct from the screen power state, which is managed separately. 194413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private int mWakefulness; 195413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 196413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // True if the sandman has just been summoned for the first time since entering the 197413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // dreaming or dozing state. Indicates whether a new dream should begin. 198413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private boolean mSandmanSummoned; 199413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 200413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // True if MSG_SANDMAN has been scheduled. 201413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private boolean mSandmanScheduled; 202b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen 203b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen // Table of all suspend blockers. 204b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen // There should only be a few of these. 205413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 206b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen 207b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen // Table of all wake locks acquired by applications. 208b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 209b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen 210b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen // A bitfield that summarizes the state of all active wakelocks. 211b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen private int mWakeLockSummary; 212b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen 213b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen // If true, instructs the display controller to wait for the proximity sensor to 214b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen // go negative before turning the screen on. 215b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen private boolean mRequestWaitForNegativeProximity; 2167188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown 2177188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown // Timestamp of the last time the device was awoken or put to sleep. 218b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen private long mLastWakeTime; 2197188e55f54a43c55fd6b96454720c447f1dc454eJeff Brown private long mLastSleepTime; 220b5c3107262fdf82aef4bd5ee8b8c60dd3e4725feMarco Nelissen 221413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // True if we need to send a wake up or go to sleep finished notification 222413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // when the display is ready. 223413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private boolean mSendWakeUpFinishedNotificationWhenReady; 224413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private boolean mSendGoToSleepFinishedNotificationWhenReady; 225413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 226413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // Timestamp of the last call to user activity. 227413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private long mLastUserActivityTime; 228413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber private long mLastUserActivityTimeNoChangeLights; 229413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber 230413f523afe96aff02d2b0a7459127b8f67b2b43cAndreas Huber // A bitfield that summarizes the effect of the user activity timer. 231 // A zero value indicates that the user activity timer has expired. 232 private int mUserActivitySummary; 233 234 // The desired display power state. The actual state may lag behind the 235 // requested because it is updated asynchronously by the display power controller. 236 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 237 238 // True if the display power state has been fully applied, which means the display 239 // is actually on or actually off or whatever was requested. 240 private boolean mDisplayReady; 241 242 // The suspend blocker used to keep the CPU alive when an application has acquired 243 // a wake lock. 244 private final SuspendBlocker mWakeLockSuspendBlocker; 245 246 // True if the wake lock suspend blocker has been acquired. 247 private boolean mHoldingWakeLockSuspendBlocker; 248 249 // The suspend blocker used to keep the CPU alive when the display is on, the 250 // display is getting ready or there is user activity (in which case the display 251 // must be on). 252 private final SuspendBlocker mDisplaySuspendBlocker; 253 254 // True if the display suspend blocker has been acquired. 255 private boolean mHoldingDisplaySuspendBlocker; 256 257 // The screen on blocker used to keep the screen from turning on while the lock 258 // screen is coming up. 259 private final ScreenOnBlockerImpl mScreenOnBlocker; 260 261 // The display blanker used to turn the screen on or off. 262 private final DisplayBlankerImpl mDisplayBlanker; 263 264 // True if systemReady() has been called. 265 private boolean mSystemReady; 266 267 // True if boot completed occurred. We keep the screen on until this happens. 268 private boolean mBootCompleted; 269 270 // True if auto-suspend mode is enabled. 271 // Refer to autosuspend.h. 272 private boolean mAutoSuspendModeEnabled; 273 274 // True if interactive mode is enabled. 275 // Refer to power.h. 276 private boolean mInteractiveModeEnabled; 277 278 // True if the device is plugged into a power source. 279 private boolean mIsPowered; 280 281 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 282 private int mPlugType; 283 284 // The current battery level percentage. 285 private int mBatteryLevel; 286 287 // The battery level percentage at the time the dream started. 288 // This is used to terminate a dream and go to sleep if the battery is 289 // draining faster than it is charging and the user activity timeout has expired. 290 private int mBatteryLevelWhenDreamStarted; 291 292 // The current dock state. 293 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 294 295 // True to decouple auto-suspend mode from the display state. 296 private boolean mDecoupleAutoSuspendModeFromDisplayConfig; 297 298 // True to decouple interactive mode from the display state. 299 private boolean mDecoupleInteractiveModeFromDisplayConfig; 300 301 // True if the device should wake up when plugged or unplugged. 302 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 303 304 // True if the device should suspend when the screen is off due to proximity. 305 private boolean mSuspendWhenScreenOffDueToProximityConfig; 306 307 // True if dreams are supported on this device. 308 private boolean mDreamsSupportedConfig; 309 310 // Default value for dreams enabled 311 private boolean mDreamsEnabledByDefaultConfig; 312 313 // Default value for dreams activate-on-sleep 314 private boolean mDreamsActivatedOnSleepByDefaultConfig; 315 316 // Default value for dreams activate-on-dock 317 private boolean mDreamsActivatedOnDockByDefaultConfig; 318 319 // True if dreams can run while not plugged in. 320 private boolean mDreamsEnabledOnBatteryConfig; 321 322 // Minimum battery level to allow dreaming when powered. 323 // Use -1 to disable this safety feature. 324 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 325 326 // Minimum battery level to allow dreaming when not powered. 327 // Use -1 to disable this safety feature. 328 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 329 330 // If the battery level drops by this percentage and the user activity timeout 331 // has expired, then assume the device is receiving insufficient current to charge 332 // effectively and terminate the dream. Use -1 to disable this safety feature. 333 private int mDreamsBatteryLevelDrainCutoffConfig; 334 335 // True if dreams are enabled by the user. 336 private boolean mDreamsEnabledSetting; 337 338 // True if dreams should be activated on sleep. 339 private boolean mDreamsActivateOnSleepSetting; 340 341 // True if dreams should be activated on dock. 342 private boolean mDreamsActivateOnDockSetting; 343 344 // The screen off timeout setting value in milliseconds. 345 private int mScreenOffTimeoutSetting; 346 347 // The maximum allowable screen off timeout according to the device 348 // administration policy. Overrides other settings. 349 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 350 351 // The stay on while plugged in setting. 352 // A bitfield of battery conditions under which to make the screen stay on. 353 private int mStayOnWhilePluggedInSetting; 354 355 // True if the device should stay on. 356 private boolean mStayOn; 357 358 // True if the proximity sensor reads a positive result. 359 private boolean mProximityPositive; 360 361 // Screen brightness setting limits. 362 private int mScreenBrightnessSettingMinimum; 363 private int mScreenBrightnessSettingMaximum; 364 private int mScreenBrightnessSettingDefault; 365 366 // The screen brightness setting, from 0 to 255. 367 // Use -1 if no value has been set. 368 private int mScreenBrightnessSetting; 369 370 // The screen auto-brightness adjustment setting, from -1 to 1. 371 // Use 0 if there is no adjustment. 372 private float mScreenAutoBrightnessAdjustmentSetting; 373 374 // The screen brightness mode. 375 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 376 private int mScreenBrightnessModeSetting; 377 378 // The screen brightness setting override from the window manager 379 // to allow the current foreground activity to override the brightness. 380 // Use -1 to disable. 381 private int mScreenBrightnessOverrideFromWindowManager = -1; 382 383 // The user activity timeout override from the window manager 384 // to allow the current foreground activity to override the user activity timeout. 385 // Use -1 to disable. 386 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 387 388 // The screen brightness setting override from the settings application 389 // to temporarily adjust the brightness until next updated, 390 // Use -1 to disable. 391 private int mTemporaryScreenBrightnessSettingOverride = -1; 392 393 // The screen brightness adjustment setting override from the settings 394 // application to temporarily adjust the auto-brightness adjustment factor 395 // until next updated, in the range -1..1. 396 // Use NaN to disable. 397 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 398 399 // Time when we last logged a warning about calling userActivity() without permission. 400 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 401 402 private native void nativeInit(); 403 404 private static native void nativeSetPowerState(boolean screenOn, boolean screenBright); 405 private static native void nativeAcquireSuspendBlocker(String name); 406 private static native void nativeReleaseSuspendBlocker(String name); 407 private static native void nativeSetInteractive(boolean enable); 408 private static native void nativeSetAutoSuspend(boolean enable); 409 410 public PowerManagerService(Context context) { 411 super(context); 412 mContext = context; 413 synchronized (mLock) { 414 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 415 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 416 mDisplaySuspendBlocker.acquire(); 417 mHoldingDisplaySuspendBlocker = true; 418 419 mScreenOnBlocker = new ScreenOnBlockerImpl(); 420 mDisplayBlanker = new DisplayBlankerImpl(); 421 mWakefulness = WAKEFULNESS_AWAKE; 422 } 423 424 nativeInit(); 425 nativeSetPowerState(true, true); 426 } 427 428 @Override 429 public void onStart() { 430 publishBinderService(Context.POWER_SERVICE, new BinderService()); 431 publishLocalService(PowerManagerInternal.class, new LocalService()); 432 } 433 434 /** 435 * Initialize the power manager. 436 * Must be called before any other functions within the power manager are called. 437 */ 438 public void init(LightsManager ls, 439 BatteryService bs, IBatteryStats bss, 440 IAppOpsService appOps) { 441 mLightsManager = ls; 442 mBatteryService = bs; 443 mBatteryStats = bss; 444 mAppOps = appOps; 445 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 446 mHandlerThread = new ServiceThread(TAG, 447 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 448 mHandlerThread.start(); 449 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 450 451 Watchdog.getInstance().addMonitor(this); 452 Watchdog.getInstance().addThread(mHandler); 453 454 // Forcibly turn the screen on at boot so that it is in a known power state. 455 // We do this in init() rather than in the constructor because setting the 456 // screen state requires a call into surface flinger which then needs to call back 457 // into the activity manager to check permissions. Unfortunately the 458 // activity manager is not running when the constructor is called, so we 459 // have to defer setting the screen state until this point. 460 mDisplayBlanker.unblankAllDisplays(); 461 } 462 463 void setPolicy(WindowManagerPolicy policy) { 464 synchronized (mLock) { 465 mPolicy = policy; 466 } 467 } 468 469 public void systemReady() { 470 synchronized (mLock) { 471 mSystemReady = true; 472 mDreamManager = LocalServices.getService(DreamManagerInternal.class); 473 474 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 475 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 476 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 477 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 478 479 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 480 481 // The notifier runs on the system server's main looper so as not to interfere 482 // with the animations and other critical functions of the power manager. 483 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 484 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 485 mScreenOnBlocker, mPolicy); 486 487 // The display power controller runs on the power manager service's 488 // own handler thread to ensure timely operation. 489 mDisplayPowerController = new DisplayPowerController(mHandler.getLooper(), 490 mContext, mNotifier, mLightsManager, 491 LocalServices.getService(TwilightManager.class), sensorManager, 492 mDisplaySuspendBlocker, mDisplayBlanker, 493 mDisplayPowerControllerCallbacks, mHandler); 494 495 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 496 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 497 mHandler); 498 mSettingsObserver = new SettingsObserver(mHandler); 499 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 500 501 // Register for broadcasts from other components of the system. 502 IntentFilter filter = new IntentFilter(); 503 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 504 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 505 506 filter = new IntentFilter(); 507 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 508 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 509 510 filter = new IntentFilter(); 511 filter.addAction(Intent.ACTION_DREAMING_STARTED); 512 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 513 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 514 515 filter = new IntentFilter(); 516 filter.addAction(Intent.ACTION_USER_SWITCHED); 517 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 518 519 filter = new IntentFilter(); 520 filter.addAction(Intent.ACTION_DOCK_EVENT); 521 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 522 523 // Register for settings changes. 524 final ContentResolver resolver = mContext.getContentResolver(); 525 resolver.registerContentObserver(Settings.Secure.getUriFor( 526 Settings.Secure.SCREENSAVER_ENABLED), 527 false, mSettingsObserver, UserHandle.USER_ALL); 528 resolver.registerContentObserver(Settings.Secure.getUriFor( 529 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 530 false, mSettingsObserver, UserHandle.USER_ALL); 531 resolver.registerContentObserver(Settings.Secure.getUriFor( 532 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 533 false, mSettingsObserver, UserHandle.USER_ALL); 534 resolver.registerContentObserver(Settings.System.getUriFor( 535 Settings.System.SCREEN_OFF_TIMEOUT), 536 false, mSettingsObserver, UserHandle.USER_ALL); 537 resolver.registerContentObserver(Settings.Global.getUriFor( 538 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 539 false, mSettingsObserver, UserHandle.USER_ALL); 540 resolver.registerContentObserver(Settings.System.getUriFor( 541 Settings.System.SCREEN_BRIGHTNESS), 542 false, mSettingsObserver, UserHandle.USER_ALL); 543 resolver.registerContentObserver(Settings.System.getUriFor( 544 Settings.System.SCREEN_BRIGHTNESS_MODE), 545 false, mSettingsObserver, UserHandle.USER_ALL); 546 547 // Go. 548 readConfigurationLocked(); 549 updateSettingsLocked(); 550 mDirty |= DIRTY_BATTERY_STATE; 551 updatePowerStateLocked(); 552 } 553 } 554 555 private void readConfigurationLocked() { 556 final Resources resources = mContext.getResources(); 557 558 mDecoupleAutoSuspendModeFromDisplayConfig = resources.getBoolean( 559 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 560 mDecoupleInteractiveModeFromDisplayConfig = resources.getBoolean( 561 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 562 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 563 com.android.internal.R.bool.config_unplugTurnsOnScreen); 564 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 565 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 566 mDreamsSupportedConfig = resources.getBoolean( 567 com.android.internal.R.bool.config_dreamsSupported); 568 mDreamsEnabledByDefaultConfig = resources.getBoolean( 569 com.android.internal.R.bool.config_dreamsEnabledByDefault); 570 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 571 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 572 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 573 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 574 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 575 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 576 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 577 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 578 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 579 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 580 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 581 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 582 } 583 584 private void updateSettingsLocked() { 585 final ContentResolver resolver = mContext.getContentResolver(); 586 587 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 588 Settings.Secure.SCREENSAVER_ENABLED, 589 mDreamsEnabledByDefaultConfig ? 1 : 0, 590 UserHandle.USER_CURRENT) != 0); 591 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 592 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 593 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 594 UserHandle.USER_CURRENT) != 0); 595 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 596 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 597 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 598 UserHandle.USER_CURRENT) != 0); 599 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 600 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 601 UserHandle.USER_CURRENT); 602 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 603 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 604 605 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 606 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 607 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 608 UserHandle.USER_CURRENT); 609 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 610 mTemporaryScreenBrightnessSettingOverride = -1; 611 } 612 613 final float oldScreenAutoBrightnessAdjustmentSetting = 614 mScreenAutoBrightnessAdjustmentSetting; 615 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 616 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 617 UserHandle.USER_CURRENT); 618 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 619 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 620 } 621 622 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 623 Settings.System.SCREEN_BRIGHTNESS_MODE, 624 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 625 626 mDirty |= DIRTY_SETTINGS; 627 } 628 629 private void handleSettingsChangedLocked() { 630 updateSettingsLocked(); 631 updatePowerStateLocked(); 632 } 633 634 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 635 WorkSource ws, String historyTag, int uid, int pid) { 636 synchronized (mLock) { 637 if (DEBUG_SPEW) { 638 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 639 + ", flags=0x" + Integer.toHexString(flags) 640 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 641 } 642 643 WakeLock wakeLock; 644 int index = findWakeLockIndexLocked(lock); 645 if (index >= 0) { 646 wakeLock = mWakeLocks.get(index); 647 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 648 // Update existing wake lock. This shouldn't happen but is harmless. 649 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 650 uid, pid, ws, historyTag); 651 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 652 } 653 } else { 654 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 655 try { 656 lock.linkToDeath(wakeLock, 0); 657 } catch (RemoteException ex) { 658 throw new IllegalArgumentException("Wake lock is already dead."); 659 } 660 notifyWakeLockAcquiredLocked(wakeLock); 661 mWakeLocks.add(wakeLock); 662 } 663 664 applyWakeLockFlagsOnAcquireLocked(wakeLock); 665 mDirty |= DIRTY_WAKE_LOCKS; 666 updatePowerStateLocked(); 667 } 668 } 669 670 @SuppressWarnings("deprecation") 671 private static boolean isScreenLock(final WakeLock wakeLock) { 672 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 673 case PowerManager.FULL_WAKE_LOCK: 674 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 675 case PowerManager.SCREEN_DIM_WAKE_LOCK: 676 return true; 677 } 678 return false; 679 } 680 681 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 682 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 683 && isScreenLock(wakeLock)) { 684 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 685 } 686 } 687 688 private void releaseWakeLockInternal(IBinder lock, int flags) { 689 synchronized (mLock) { 690 int index = findWakeLockIndexLocked(lock); 691 if (index < 0) { 692 if (DEBUG_SPEW) { 693 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 694 + " [not found], flags=0x" + Integer.toHexString(flags)); 695 } 696 return; 697 } 698 699 WakeLock wakeLock = mWakeLocks.get(index); 700 if (DEBUG_SPEW) { 701 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 702 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 703 } 704 705 mWakeLocks.remove(index); 706 notifyWakeLockReleasedLocked(wakeLock); 707 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 708 709 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 710 mRequestWaitForNegativeProximity = true; 711 } 712 713 applyWakeLockFlagsOnReleaseLocked(wakeLock); 714 mDirty |= DIRTY_WAKE_LOCKS; 715 updatePowerStateLocked(); 716 } 717 } 718 719 private void handleWakeLockDeath(WakeLock wakeLock) { 720 synchronized (mLock) { 721 if (DEBUG_SPEW) { 722 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 723 + " [" + wakeLock.mTag + "]"); 724 } 725 726 int index = mWakeLocks.indexOf(wakeLock); 727 if (index < 0) { 728 return; 729 } 730 731 mWakeLocks.remove(index); 732 notifyWakeLockReleasedLocked(wakeLock); 733 734 applyWakeLockFlagsOnReleaseLocked(wakeLock); 735 mDirty |= DIRTY_WAKE_LOCKS; 736 updatePowerStateLocked(); 737 } 738 } 739 740 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 741 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 742 && isScreenLock(wakeLock)) { 743 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 744 PowerManager.USER_ACTIVITY_EVENT_OTHER, 745 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 746 wakeLock.mOwnerUid); 747 } 748 } 749 750 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag) { 751 synchronized (mLock) { 752 int index = findWakeLockIndexLocked(lock); 753 if (index < 0) { 754 if (DEBUG_SPEW) { 755 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 756 + " [not found], ws=" + ws); 757 } 758 throw new IllegalArgumentException("Wake lock not active"); 759 } 760 761 WakeLock wakeLock = mWakeLocks.get(index); 762 if (DEBUG_SPEW) { 763 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 764 + " [" + wakeLock.mTag + "], ws=" + ws); 765 } 766 767 if (!wakeLock.hasSameWorkSource(ws)) { 768 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 769 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 770 ws, historyTag); 771 wakeLock.mHistoryTag = historyTag; 772 wakeLock.updateWorkSource(ws); 773 } 774 } 775 } 776 777 private int findWakeLockIndexLocked(IBinder lock) { 778 final int count = mWakeLocks.size(); 779 for (int i = 0; i < count; i++) { 780 if (mWakeLocks.get(i).mLock == lock) { 781 return i; 782 } 783 } 784 return -1; 785 } 786 787 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 788 if (mSystemReady) { 789 wakeLock.mNotifiedAcquired = true; 790 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 791 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 792 wakeLock.mHistoryTag); 793 } 794 } 795 796 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 797 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 798 if (mSystemReady && wakeLock.mNotifiedAcquired) { 799 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 800 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 801 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 802 } 803 } 804 805 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 806 if (mSystemReady && wakeLock.mNotifiedAcquired) { 807 wakeLock.mNotifiedAcquired = false; 808 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 809 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 810 } 811 } 812 813 @SuppressWarnings("deprecation") 814 private boolean isWakeLockLevelSupportedInternal(int level) { 815 synchronized (mLock) { 816 switch (level) { 817 case PowerManager.PARTIAL_WAKE_LOCK: 818 case PowerManager.SCREEN_DIM_WAKE_LOCK: 819 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 820 case PowerManager.FULL_WAKE_LOCK: 821 case PowerManager.DOZE_WAKE_LOCK: 822 return true; 823 824 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 825 return mSystemReady && mDisplayPowerController.isProximitySensorAvailable(); 826 827 default: 828 return false; 829 } 830 } 831 } 832 833 // Called from native code. 834 private void userActivityFromNative(long eventTime, int event, int flags) { 835 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 836 } 837 838 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 839 synchronized (mLock) { 840 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 841 updatePowerStateLocked(); 842 } 843 } 844 } 845 846 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 847 if (DEBUG_SPEW) { 848 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 849 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 850 + ", uid=" + uid); 851 } 852 853 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 854 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 855 || !mBootCompleted || !mSystemReady) { 856 return false; 857 } 858 859 mNotifier.onUserActivity(event, uid); 860 861 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 862 if (eventTime > mLastUserActivityTimeNoChangeLights 863 && eventTime > mLastUserActivityTime) { 864 mLastUserActivityTimeNoChangeLights = eventTime; 865 mDirty |= DIRTY_USER_ACTIVITY; 866 return true; 867 } 868 } else { 869 if (eventTime > mLastUserActivityTime) { 870 mLastUserActivityTime = eventTime; 871 mDirty |= DIRTY_USER_ACTIVITY; 872 return true; 873 } 874 } 875 return false; 876 } 877 878 // Called from native code. 879 private void wakeUpFromNative(long eventTime) { 880 wakeUpInternal(eventTime); 881 } 882 883 private void wakeUpInternal(long eventTime) { 884 synchronized (mLock) { 885 if (wakeUpNoUpdateLocked(eventTime)) { 886 updatePowerStateLocked(); 887 } 888 } 889 } 890 891 private boolean wakeUpNoUpdateLocked(long eventTime) { 892 if (DEBUG_SPEW) { 893 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 894 } 895 896 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 897 || !mBootCompleted || !mSystemReady) { 898 return false; 899 } 900 901 switch (mWakefulness) { 902 case WAKEFULNESS_ASLEEP: 903 Slog.i(TAG, "Waking up from sleep..."); 904 break; 905 case WAKEFULNESS_DREAMING: 906 Slog.i(TAG, "Waking up from dream..."); 907 break; 908 case WAKEFULNESS_DOZING: 909 Slog.i(TAG, "Waking up from dozing..."); 910 break; 911 } 912 913 if (mWakefulness != WAKEFULNESS_DREAMING) { 914 sendPendingNotificationsLocked(); 915 mNotifier.onWakeUpStarted(); 916 mSendWakeUpFinishedNotificationWhenReady = true; 917 } 918 919 mLastWakeTime = eventTime; 920 mWakefulness = WAKEFULNESS_AWAKE; 921 mDirty |= DIRTY_WAKEFULNESS; 922 923 userActivityNoUpdateLocked( 924 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 925 return true; 926 } 927 928 // Called from native code. 929 private void goToSleepFromNative(long eventTime, int reason) { 930 goToSleepInternal(eventTime, reason); 931 } 932 933 private void goToSleepInternal(long eventTime, int reason) { 934 synchronized (mLock) { 935 if (goToSleepNoUpdateLocked(eventTime, reason)) { 936 updatePowerStateLocked(); 937 } 938 } 939 } 940 941 // This method is called goToSleep for historical reasons but we actually start 942 // dozing before really going to sleep. 943 @SuppressWarnings("deprecation") 944 private boolean goToSleepNoUpdateLocked(long eventTime, int reason) { 945 if (DEBUG_SPEW) { 946 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime + ", reason=" + reason); 947 } 948 949 if (eventTime < mLastWakeTime 950 || mWakefulness == WAKEFULNESS_ASLEEP 951 || mWakefulness == WAKEFULNESS_DOZING 952 || !mBootCompleted || !mSystemReady) { 953 return false; 954 } 955 956 switch (reason) { 957 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 958 Slog.i(TAG, "Going to sleep due to device administration policy..."); 959 break; 960 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 961 Slog.i(TAG, "Going to sleep due to screen timeout..."); 962 break; 963 default: 964 Slog.i(TAG, "Going to sleep by user request..."); 965 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 966 break; 967 } 968 969 sendPendingNotificationsLocked(); 970 mNotifier.onGoToSleepStarted(reason); 971 mSendGoToSleepFinishedNotificationWhenReady = true; 972 973 mLastSleepTime = eventTime; 974 mDirty |= DIRTY_WAKEFULNESS; 975 mWakefulness = WAKEFULNESS_DOZING; 976 mSandmanSummoned = true; 977 978 // Report the number of wake locks that will be cleared by going to sleep. 979 int numWakeLocksCleared = 0; 980 final int numWakeLocks = mWakeLocks.size(); 981 for (int i = 0; i < numWakeLocks; i++) { 982 final WakeLock wakeLock = mWakeLocks.get(i); 983 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 984 case PowerManager.FULL_WAKE_LOCK: 985 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 986 case PowerManager.SCREEN_DIM_WAKE_LOCK: 987 numWakeLocksCleared += 1; 988 break; 989 } 990 } 991 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 992 return true; 993 } 994 995 private void napInternal(long eventTime) { 996 synchronized (mLock) { 997 if (napNoUpdateLocked(eventTime)) { 998 updatePowerStateLocked(); 999 } 1000 } 1001 } 1002 1003 private boolean napNoUpdateLocked(long eventTime) { 1004 if (DEBUG_SPEW) { 1005 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 1006 } 1007 1008 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1009 || !mBootCompleted || !mSystemReady) { 1010 return false; 1011 } 1012 1013 Slog.i(TAG, "Nap time..."); 1014 1015 mDirty |= DIRTY_WAKEFULNESS; 1016 mWakefulness = WAKEFULNESS_DREAMING; 1017 mSandmanSummoned = true; 1018 return true; 1019 } 1020 1021 // Done dozing, drop everything and go to sleep. 1022 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 1023 if (DEBUG_SPEW) { 1024 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 1025 } 1026 1027 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1028 || !mBootCompleted || !mSystemReady) { 1029 return false; 1030 } 1031 1032 Slog.i(TAG, "Sleeping..."); 1033 1034 mDirty |= DIRTY_WAKEFULNESS; 1035 mWakefulness = WAKEFULNESS_ASLEEP; 1036 return true; 1037 } 1038 1039 /** 1040 * Updates the global power state based on dirty bits recorded in mDirty. 1041 * 1042 * This is the main function that performs power state transitions. 1043 * We centralize them here so that we can recompute the power state completely 1044 * each time something important changes, and ensure that we do it the same 1045 * way each time. The point is to gather all of the transition logic here. 1046 */ 1047 private void updatePowerStateLocked() { 1048 if (!mSystemReady || mDirty == 0) { 1049 return; 1050 } 1051 if (!Thread.holdsLock(mLock)) { 1052 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1053 } 1054 1055 // Phase 0: Basic state updates. 1056 updateIsPoweredLocked(mDirty); 1057 updateStayOnLocked(mDirty); 1058 1059 // Phase 1: Update wakefulness. 1060 // Loop because the wake lock and user activity computations are influenced 1061 // by changes in wakefulness. 1062 final long now = SystemClock.uptimeMillis(); 1063 int dirtyPhase2 = 0; 1064 for (;;) { 1065 int dirtyPhase1 = mDirty; 1066 dirtyPhase2 |= dirtyPhase1; 1067 mDirty = 0; 1068 1069 updateWakeLockSummaryLocked(dirtyPhase1); 1070 updateUserActivitySummaryLocked(now, dirtyPhase1); 1071 if (!updateWakefulnessLocked(dirtyPhase1)) { 1072 break; 1073 } 1074 } 1075 1076 // Phase 2: Update dreams and display power state. 1077 updateDreamLocked(dirtyPhase2); 1078 updateDisplayPowerStateLocked(dirtyPhase2); 1079 1080 // Phase 3: Send notifications, if needed. 1081 if (mDisplayReady) { 1082 sendPendingNotificationsLocked(); 1083 } 1084 1085 // Phase 4: Update suspend blocker. 1086 // Because we might release the last suspend blocker here, we need to make sure 1087 // we finished everything else first! 1088 updateSuspendBlockerLocked(); 1089 } 1090 1091 private void sendPendingNotificationsLocked() { 1092 if (mSendWakeUpFinishedNotificationWhenReady) { 1093 mSendWakeUpFinishedNotificationWhenReady = false; 1094 mNotifier.onWakeUpFinished(); 1095 } 1096 if (mSendGoToSleepFinishedNotificationWhenReady) { 1097 mSendGoToSleepFinishedNotificationWhenReady = false; 1098 mNotifier.onGoToSleepFinished(); 1099 } 1100 } 1101 1102 /** 1103 * Updates the value of mIsPowered. 1104 * Sets DIRTY_IS_POWERED if a change occurred. 1105 */ 1106 private void updateIsPoweredLocked(int dirty) { 1107 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1108 final boolean wasPowered = mIsPowered; 1109 final int oldPlugType = mPlugType; 1110 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1111 mPlugType = mBatteryService.getPlugType(); 1112 mBatteryLevel = mBatteryService.getBatteryLevel(); 1113 1114 if (DEBUG_SPEW) { 1115 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1116 + ", mIsPowered=" + mIsPowered 1117 + ", oldPlugType=" + oldPlugType 1118 + ", mPlugType=" + mPlugType 1119 + ", mBatteryLevel=" + mBatteryLevel); 1120 } 1121 1122 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1123 mDirty |= DIRTY_IS_POWERED; 1124 1125 // Update wireless dock detection state. 1126 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1127 mIsPowered, mPlugType, mBatteryLevel); 1128 1129 // Treat plugging and unplugging the devices as a user activity. 1130 // Users find it disconcerting when they plug or unplug the device 1131 // and it shuts off right away. 1132 // Some devices also wake the device when plugged or unplugged because 1133 // they don't have a charging LED. 1134 final long now = SystemClock.uptimeMillis(); 1135 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1136 dockedOnWirelessCharger)) { 1137 wakeUpNoUpdateLocked(now); 1138 } 1139 userActivityNoUpdateLocked( 1140 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1141 1142 // Tell the notifier whether wireless charging has started so that 1143 // it can provide feedback to the user. 1144 if (dockedOnWirelessCharger) { 1145 mNotifier.onWirelessChargingStarted(); 1146 } 1147 } 1148 } 1149 } 1150 1151 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1152 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1153 // Don't wake when powered unless configured to do so. 1154 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1155 return false; 1156 } 1157 1158 // Don't wake when undocked from wireless charger. 1159 // See WirelessChargerDetector for justification. 1160 if (wasPowered && !mIsPowered 1161 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1162 return false; 1163 } 1164 1165 // Don't wake when docked on wireless charger unless we are certain of it. 1166 // See WirelessChargerDetector for justification. 1167 if (!wasPowered && mIsPowered 1168 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1169 && !dockedOnWirelessCharger) { 1170 return false; 1171 } 1172 1173 // If already dreaming and becoming powered, then don't wake. 1174 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1175 return false; 1176 } 1177 1178 // Otherwise wake up! 1179 return true; 1180 } 1181 1182 /** 1183 * Updates the value of mStayOn. 1184 * Sets DIRTY_STAY_ON if a change occurred. 1185 */ 1186 private void updateStayOnLocked(int dirty) { 1187 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1188 final boolean wasStayOn = mStayOn; 1189 if (mStayOnWhilePluggedInSetting != 0 1190 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1191 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1192 } else { 1193 mStayOn = false; 1194 } 1195 1196 if (mStayOn != wasStayOn) { 1197 mDirty |= DIRTY_STAY_ON; 1198 } 1199 } 1200 } 1201 1202 /** 1203 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1204 * Note that most wake-locks are ignored when the system is asleep. 1205 * 1206 * This function must have no other side-effects. 1207 */ 1208 @SuppressWarnings("deprecation") 1209 private void updateWakeLockSummaryLocked(int dirty) { 1210 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1211 mWakeLockSummary = 0; 1212 1213 final int numWakeLocks = mWakeLocks.size(); 1214 for (int i = 0; i < numWakeLocks; i++) { 1215 final WakeLock wakeLock = mWakeLocks.get(i); 1216 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1217 case PowerManager.PARTIAL_WAKE_LOCK: 1218 mWakeLockSummary |= WAKE_LOCK_CPU; 1219 break; 1220 case PowerManager.FULL_WAKE_LOCK: 1221 if (mWakefulness == WAKEFULNESS_AWAKE 1222 || mWakefulness == WAKEFULNESS_DREAMING) { 1223 mWakeLockSummary |= WAKE_LOCK_CPU 1224 | WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1225 } 1226 if (mWakefulness == WAKEFULNESS_AWAKE) { 1227 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1228 } 1229 break; 1230 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1231 if (mWakefulness == WAKEFULNESS_AWAKE 1232 || mWakefulness == WAKEFULNESS_DREAMING) { 1233 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_SCREEN_BRIGHT; 1234 } 1235 if (mWakefulness == WAKEFULNESS_AWAKE) { 1236 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1237 } 1238 break; 1239 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1240 if (mWakefulness == WAKEFULNESS_AWAKE 1241 || mWakefulness == WAKEFULNESS_DREAMING) { 1242 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_SCREEN_DIM; 1243 } 1244 if (mWakefulness == WAKEFULNESS_AWAKE) { 1245 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1246 } 1247 break; 1248 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1249 if (mWakefulness == WAKEFULNESS_AWAKE 1250 || mWakefulness == WAKEFULNESS_DREAMING 1251 || mWakefulness == WAKEFULNESS_DOZING) { 1252 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1253 } 1254 break; 1255 case PowerManager.DOZE_WAKE_LOCK: 1256 if (mWakefulness == WAKEFULNESS_DOZING) { 1257 mWakeLockSummary |= WAKE_LOCK_DOZE; 1258 } 1259 break; 1260 } 1261 } 1262 1263 if (DEBUG_SPEW) { 1264 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1265 + wakefulnessToString(mWakefulness) 1266 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1267 } 1268 } 1269 } 1270 1271 /** 1272 * Updates the value of mUserActivitySummary to summarize the user requested 1273 * state of the system such as whether the screen should be bright or dim. 1274 * Note that user activity is ignored when the system is asleep. 1275 * 1276 * This function must have no other side-effects. 1277 */ 1278 private void updateUserActivitySummaryLocked(long now, int dirty) { 1279 // Update the status of the user activity timeout timer. 1280 if ((dirty & (DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1281 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1282 1283 long nextTimeout = 0; 1284 if (mWakefulness == WAKEFULNESS_AWAKE 1285 || mWakefulness == WAKEFULNESS_DREAMING) { 1286 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1287 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1288 1289 mUserActivitySummary = 0; 1290 if (mLastUserActivityTime >= mLastWakeTime) { 1291 nextTimeout = mLastUserActivityTime 1292 + screenOffTimeout - screenDimDuration; 1293 if (now < nextTimeout) { 1294 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1295 } else { 1296 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1297 if (now < nextTimeout) { 1298 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1299 } 1300 } 1301 } 1302 if (mUserActivitySummary == 0 1303 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1304 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1305 if (now < nextTimeout 1306 && mDisplayPowerRequest.wantScreenOnNormal()) { 1307 mUserActivitySummary = mDisplayPowerRequest.screenState 1308 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1309 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1310 } 1311 } 1312 if (mUserActivitySummary != 0) { 1313 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1314 msg.setAsynchronous(true); 1315 mHandler.sendMessageAtTime(msg, nextTimeout); 1316 } 1317 } else { 1318 mUserActivitySummary = 0; 1319 } 1320 1321 if (DEBUG_SPEW) { 1322 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1323 + wakefulnessToString(mWakefulness) 1324 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1325 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1326 } 1327 } 1328 } 1329 1330 /** 1331 * Called when a user activity timeout has occurred. 1332 * Simply indicates that something about user activity has changed so that the new 1333 * state can be recomputed when the power state is updated. 1334 * 1335 * This function must have no other side-effects besides setting the dirty 1336 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1337 */ 1338 private void handleUserActivityTimeout() { // runs on handler thread 1339 synchronized (mLock) { 1340 if (DEBUG_SPEW) { 1341 Slog.d(TAG, "handleUserActivityTimeout"); 1342 } 1343 1344 mDirty |= DIRTY_USER_ACTIVITY; 1345 updatePowerStateLocked(); 1346 } 1347 } 1348 1349 private int getScreenOffTimeoutLocked() { 1350 int timeout = mScreenOffTimeoutSetting; 1351 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1352 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1353 } 1354 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1355 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1356 } 1357 return Math.max(timeout, MINIMUM_SCREEN_OFF_TIMEOUT); 1358 } 1359 1360 private int getScreenDimDurationLocked(int screenOffTimeout) { 1361 return Math.min(SCREEN_DIM_DURATION, 1362 (int)(screenOffTimeout * MAXIMUM_SCREEN_DIM_RATIO)); 1363 } 1364 1365 /** 1366 * Updates the wakefulness of the device. 1367 * 1368 * This is the function that decides whether the device should start dreaming 1369 * based on the current wake locks and user activity state. It may modify mDirty 1370 * if the wakefulness changes. 1371 * 1372 * Returns true if the wakefulness changed and we need to restart power state calculation. 1373 */ 1374 private boolean updateWakefulnessLocked(int dirty) { 1375 boolean changed = false; 1376 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1377 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1378 | DIRTY_DOCK_STATE)) != 0) { 1379 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1380 if (DEBUG_SPEW) { 1381 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1382 } 1383 final long time = SystemClock.uptimeMillis(); 1384 if (shouldNapAtBedTimeLocked()) { 1385 changed = napNoUpdateLocked(time); 1386 } else { 1387 changed = goToSleepNoUpdateLocked(time, 1388 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1389 } 1390 } 1391 } 1392 return changed; 1393 } 1394 1395 /** 1396 * Returns true if the device should automatically nap and start dreaming when the user 1397 * activity timeout has expired and it's bedtime. 1398 */ 1399 private boolean shouldNapAtBedTimeLocked() { 1400 return mDreamsActivateOnSleepSetting 1401 || (mDreamsActivateOnDockSetting 1402 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1403 } 1404 1405 /** 1406 * Returns true if the device should go to sleep now. 1407 * Also used when exiting a dream to determine whether we should go back 1408 * to being fully awake or else go to sleep for good. 1409 */ 1410 private boolean isItBedTimeYetLocked() { 1411 return mBootCompleted && !isBeingKeptAwakeLocked(); 1412 } 1413 1414 /** 1415 * Returns true if the device is being kept awake by a wake lock, user activity 1416 * or the stay on while powered setting. We also keep the phone awake when 1417 * the proximity sensor returns a positive result so that the device does not 1418 * lock while in a phone call. This function only controls whether the device 1419 * will go to sleep or dream which is independent of whether it will be allowed 1420 * to suspend. 1421 */ 1422 private boolean isBeingKeptAwakeLocked() { 1423 return mStayOn 1424 || mProximityPositive 1425 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1426 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1427 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1428 } 1429 1430 /** 1431 * Determines whether to post a message to the sandman to update the dream state. 1432 */ 1433 private void updateDreamLocked(int dirty) { 1434 if ((dirty & (DIRTY_WAKEFULNESS 1435 | DIRTY_USER_ACTIVITY 1436 | DIRTY_WAKE_LOCKS 1437 | DIRTY_BOOT_COMPLETED 1438 | DIRTY_SETTINGS 1439 | DIRTY_IS_POWERED 1440 | DIRTY_STAY_ON 1441 | DIRTY_PROXIMITY_POSITIVE 1442 | DIRTY_BATTERY_STATE)) != 0) { 1443 scheduleSandmanLocked(); 1444 } 1445 } 1446 1447 private void scheduleSandmanLocked() { 1448 if (!mSandmanScheduled) { 1449 mSandmanScheduled = true; 1450 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1451 msg.setAsynchronous(true); 1452 mHandler.sendMessage(msg); 1453 } 1454 } 1455 1456 /** 1457 * Called when the device enters or exits a dreaming or dozing state. 1458 * 1459 * We do this asynchronously because we must call out of the power manager to start 1460 * the dream and we don't want to hold our lock while doing so. There is a risk that 1461 * the device will wake or go to sleep in the meantime so we have to handle that case. 1462 */ 1463 private void handleSandman() { // runs on handler thread 1464 // Handle preconditions. 1465 final boolean startDreaming; 1466 final int wakefulness; 1467 synchronized (mLock) { 1468 mSandmanScheduled = false; 1469 wakefulness = mWakefulness; 1470 if (mSandmanSummoned) { 1471 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1472 || wakefulness == WAKEFULNESS_DOZING); 1473 mSandmanSummoned = false; 1474 } else { 1475 startDreaming = false; 1476 } 1477 } 1478 1479 // Start dreaming if needed. 1480 // We only control the dream on the handler thread, so we don't need to worry about 1481 // concurrent attempts to start or stop the dream. 1482 final boolean isDreaming; 1483 if (mDreamManager != null) { 1484 // Restart the dream whenever the sandman is summoned. 1485 if (startDreaming) { 1486 mDreamManager.stopDream(); 1487 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1488 } 1489 isDreaming = mDreamManager.isDreaming(); 1490 } else { 1491 isDreaming = false; 1492 } 1493 1494 // Update dream state. 1495 synchronized (mLock) { 1496 // Remember the initial battery level when the dream started. 1497 if (startDreaming && isDreaming) { 1498 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1499 if (wakefulness == WAKEFULNESS_DOZING) { 1500 Slog.i(TAG, "Dozing..."); 1501 } else { 1502 Slog.i(TAG, "Dreaming..."); 1503 } 1504 } 1505 1506 // If preconditions changed, wait for the next iteration to determine 1507 // whether the dream should continue (or be restarted). 1508 if (mSandmanSummoned || mWakefulness != wakefulness) { 1509 return; // wait for next cycle 1510 } 1511 1512 // Determine whether the dream should continue. 1513 if (wakefulness == WAKEFULNESS_DREAMING) { 1514 if (isDreaming && canDreamLocked()) { 1515 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1516 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1517 - mDreamsBatteryLevelDrainCutoffConfig 1518 && !isBeingKeptAwakeLocked()) { 1519 // If the user activity timeout expired and the battery appears 1520 // to be draining faster than it is charging then stop dreaming 1521 // and go to sleep. 1522 Slog.i(TAG, "Stopping dream because the battery appears to " 1523 + "be draining faster than it is charging. " 1524 + "Battery level when dream started: " 1525 + mBatteryLevelWhenDreamStarted + "%. " 1526 + "Battery level now: " + mBatteryLevel + "%."); 1527 } else { 1528 return; // continue dreaming 1529 } 1530 } 1531 1532 // Dream has ended or will be stopped. Update the power state. 1533 if (isItBedTimeYetLocked()) { 1534 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1535 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1536 updatePowerStateLocked(); 1537 } else { 1538 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1539 updatePowerStateLocked(); 1540 } 1541 } else if (wakefulness == WAKEFULNESS_DOZING) { 1542 if (isDreaming) { 1543 return; // continue dozing 1544 } 1545 1546 // Doze has ended or will be stopped. Update the power state. 1547 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1548 updatePowerStateLocked(); 1549 } 1550 } 1551 1552 // Stop dream. 1553 if (isDreaming) { 1554 mDreamManager.stopDream(); 1555 } 1556 } 1557 1558 /** 1559 * Returns true if the device is allowed to dream in its current state. 1560 * This function is not called when dozing. 1561 */ 1562 private boolean canDreamLocked() { 1563 if (mWakefulness != WAKEFULNESS_DREAMING 1564 || !mDreamsSupportedConfig 1565 || !mDreamsEnabledSetting 1566 || !mDisplayPowerRequest.wantScreenOnNormal() 1567 || !mBootCompleted) { 1568 return false; 1569 } 1570 if (!isBeingKeptAwakeLocked()) { 1571 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1572 return false; 1573 } 1574 if (!mIsPowered 1575 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1576 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1577 return false; 1578 } 1579 if (mIsPowered 1580 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1581 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1582 return false; 1583 } 1584 } 1585 return true; 1586 } 1587 1588 private void handleScreenOnBlockerReleased() { 1589 synchronized (mLock) { 1590 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1591 updatePowerStateLocked(); 1592 } 1593 } 1594 1595 /** 1596 * Updates the display power state asynchronously. 1597 * When the update is finished, mDisplayReady will be set to true. The display 1598 * controller posts a message to tell us when the actual display power state 1599 * has been updated so we come back here to double-check and finish up. 1600 * 1601 * This function recalculates the display power state each time. 1602 */ 1603 private void updateDisplayPowerStateLocked(int dirty) { 1604 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1605 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1606 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1607 final int newScreenState = getDesiredScreenPowerStateLocked(); 1608 mDisplayPowerRequest.screenState = newScreenState; 1609 nativeSetPowerState(isScreenOnLocked(), 1610 newScreenState == DisplayPowerRequest.SCREEN_STATE_BRIGHT); 1611 1612 int screenBrightness = mScreenBrightnessSettingDefault; 1613 float screenAutoBrightnessAdjustment = 0.0f; 1614 boolean autoBrightness = (mScreenBrightnessModeSetting == 1615 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1616 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1617 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1618 autoBrightness = false; 1619 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1620 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1621 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1622 screenBrightness = mScreenBrightnessSetting; 1623 } 1624 if (autoBrightness) { 1625 screenBrightness = mScreenBrightnessSettingDefault; 1626 if (isValidAutoBrightnessAdjustment( 1627 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1628 screenAutoBrightnessAdjustment = 1629 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1630 } else if (isValidAutoBrightnessAdjustment( 1631 mScreenAutoBrightnessAdjustmentSetting)) { 1632 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1633 } 1634 } 1635 screenBrightness = Math.max(Math.min(screenBrightness, 1636 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1637 screenAutoBrightnessAdjustment = Math.max(Math.min( 1638 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1639 mDisplayPowerRequest.screenBrightness = screenBrightness; 1640 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1641 screenAutoBrightnessAdjustment; 1642 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1643 1644 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1645 1646 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1647 1648 mDisplayReady = mDisplayPowerController.requestPowerState(mDisplayPowerRequest, 1649 mRequestWaitForNegativeProximity); 1650 mRequestWaitForNegativeProximity = false; 1651 1652 if (DEBUG_SPEW) { 1653 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1654 + ", newScreenState=" + newScreenState 1655 + ", mWakefulness=" + mWakefulness 1656 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1657 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1658 + ", mBootCompleted=" + mBootCompleted); 1659 } 1660 } 1661 } 1662 1663 private static boolean isValidBrightness(int value) { 1664 return value >= 0 && value <= 255; 1665 } 1666 1667 private static boolean isValidAutoBrightnessAdjustment(float value) { 1668 // Handles NaN by always returning false. 1669 return value >= -1.0f && value <= 1.0f; 1670 } 1671 1672 private int getDesiredScreenPowerStateLocked() { 1673 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1674 return DisplayPowerRequest.SCREEN_STATE_OFF; 1675 } 1676 1677 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1678 return DisplayPowerRequest.SCREEN_STATE_DOZE; 1679 } 1680 1681 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1682 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1683 || !mBootCompleted) { 1684 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1685 } 1686 1687 return DisplayPowerRequest.SCREEN_STATE_DIM; 1688 } 1689 1690 private final DisplayPowerController.Callbacks mDisplayPowerControllerCallbacks = 1691 new DisplayPowerController.Callbacks() { 1692 @Override 1693 public void onStateChanged() { 1694 synchronized (mLock) { 1695 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1696 updatePowerStateLocked(); 1697 } 1698 } 1699 1700 @Override 1701 public void onProximityPositive() { 1702 synchronized (mLock) { 1703 mProximityPositive = true; 1704 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1705 updatePowerStateLocked(); 1706 } 1707 } 1708 1709 @Override 1710 public void onProximityNegative() { 1711 synchronized (mLock) { 1712 mProximityPositive = false; 1713 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1714 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1715 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1716 updatePowerStateLocked(); 1717 } 1718 } 1719 }; 1720 1721 private boolean shouldUseProximitySensorLocked() { 1722 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1723 } 1724 1725 /** 1726 * Updates the suspend blocker that keeps the CPU alive. 1727 * 1728 * This function must have no other side-effects. 1729 */ 1730 private void updateSuspendBlockerLocked() { 1731 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1732 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1733 final boolean autoSuspend = !needDisplaySuspendBlocker; 1734 1735 // Disable auto-suspend if needed. 1736 if (!autoSuspend) { 1737 if (mDecoupleAutoSuspendModeFromDisplayConfig) { 1738 setAutoSuspendModeLocked(false); 1739 } 1740 if (mDecoupleInteractiveModeFromDisplayConfig) { 1741 setInteractiveModeLocked(true); 1742 } 1743 } 1744 1745 // First acquire suspend blockers if needed. 1746 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1747 mWakeLockSuspendBlocker.acquire(); 1748 mHoldingWakeLockSuspendBlocker = true; 1749 } 1750 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1751 mDisplaySuspendBlocker.acquire(); 1752 mHoldingDisplaySuspendBlocker = true; 1753 } 1754 1755 // Then release suspend blockers if needed. 1756 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1757 mWakeLockSuspendBlocker.release(); 1758 mHoldingWakeLockSuspendBlocker = false; 1759 } 1760 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1761 mDisplaySuspendBlocker.release(); 1762 mHoldingDisplaySuspendBlocker = false; 1763 } 1764 1765 // Enable auto-suspend if needed. 1766 if (autoSuspend) { 1767 if (mDecoupleInteractiveModeFromDisplayConfig) { 1768 setInteractiveModeLocked(false); 1769 } 1770 if (mDecoupleAutoSuspendModeFromDisplayConfig) { 1771 setAutoSuspendModeLocked(true); 1772 } 1773 } 1774 } 1775 1776 /** 1777 * Return true if we must keep a suspend blocker active on behalf of the display. 1778 * We do so if the screen is on or is in transition between states. 1779 */ 1780 private boolean needDisplaySuspendBlockerLocked() { 1781 if (!mDisplayReady) { 1782 return true; 1783 } 1784 if (mDisplayPowerRequest.wantScreenOnNormal()) { 1785 // If we asked for the screen to be on but it is off due to the proximity 1786 // sensor then we may suspend but only if the configuration allows it. 1787 // On some hardware it may not be safe to suspend because the proximity 1788 // sensor may not be correctly configured as a wake-up source. 1789 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1790 || !mSuspendWhenScreenOffDueToProximityConfig) { 1791 return true; 1792 } 1793 } 1794 // Let the system suspend if the screen is off or dozing. 1795 return false; 1796 } 1797 1798 private void setAutoSuspendModeLocked(boolean enable) { 1799 if (enable != mAutoSuspendModeEnabled) { 1800 if (DEBUG) { 1801 Slog.d(TAG, "Setting auto-suspend mode to " + enable); 1802 } 1803 mAutoSuspendModeEnabled = enable; 1804 nativeSetAutoSuspend(enable); 1805 } 1806 } 1807 1808 private void setInteractiveModeLocked(boolean enable) { 1809 if (enable != mInteractiveModeEnabled) { 1810 if (DEBUG) { 1811 Slog.d(TAG, "Setting interactive mode to " + enable); 1812 } 1813 mInteractiveModeEnabled = enable; 1814 nativeSetInteractive(enable); 1815 } 1816 } 1817 1818 private boolean isScreenOnInternal() { 1819 synchronized (mLock) { 1820 // XXX This is a temporary hack to let certain parts of the system pretend the 1821 // screen is still on even when dozing and we would normally want to report 1822 // screen off. Will be removed when the window manager is modified to use 1823 // the true blanking state of the display. 1824 return isScreenOnLocked() 1825 || mWakefulness == WAKEFULNESS_DOZING; 1826 } 1827 } 1828 1829 private boolean isScreenOnLocked() { 1830 return mWakefulness == WAKEFULNESS_AWAKE 1831 || mWakefulness == WAKEFULNESS_DREAMING; 1832 } 1833 1834 private void handleBatteryStateChangedLocked() { 1835 mDirty |= DIRTY_BATTERY_STATE; 1836 updatePowerStateLocked(); 1837 } 1838 1839 private void startWatchingForBootAnimationFinished() { 1840 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1841 } 1842 1843 private void checkIfBootAnimationFinished() { 1844 if (DEBUG) { 1845 Slog.d(TAG, "Check if boot animation finished..."); 1846 } 1847 1848 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1849 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1850 BOOT_ANIMATION_POLL_INTERVAL); 1851 return; 1852 } 1853 1854 synchronized (mLock) { 1855 if (!mBootCompleted) { 1856 Slog.i(TAG, "Boot animation finished."); 1857 handleBootCompletedLocked(); 1858 } 1859 } 1860 } 1861 1862 private void handleBootCompletedLocked() { 1863 final long now = SystemClock.uptimeMillis(); 1864 mBootCompleted = true; 1865 mDirty |= DIRTY_BOOT_COMPLETED; 1866 userActivityNoUpdateLocked( 1867 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1868 updatePowerStateLocked(); 1869 } 1870 1871 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1872 final String reason, boolean wait) { 1873 if (mHandler == null || !mSystemReady) { 1874 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1875 } 1876 1877 Runnable runnable = new Runnable() { 1878 @Override 1879 public void run() { 1880 synchronized (this) { 1881 if (shutdown) { 1882 ShutdownThread.shutdown(mContext, confirm); 1883 } else { 1884 ShutdownThread.reboot(mContext, reason, confirm); 1885 } 1886 } 1887 } 1888 }; 1889 1890 // ShutdownThread must run on a looper capable of displaying the UI. 1891 Message msg = Message.obtain(mHandler, runnable); 1892 msg.setAsynchronous(true); 1893 mHandler.sendMessage(msg); 1894 1895 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 1896 if (wait) { 1897 synchronized (runnable) { 1898 while (true) { 1899 try { 1900 runnable.wait(); 1901 } catch (InterruptedException e) { 1902 } 1903 } 1904 } 1905 } 1906 } 1907 1908 private void crashInternal(final String message) { 1909 Thread t = new Thread("PowerManagerService.crash()") { 1910 @Override 1911 public void run() { 1912 throw new RuntimeException(message); 1913 } 1914 }; 1915 try { 1916 t.start(); 1917 t.join(); 1918 } catch (InterruptedException e) { 1919 Log.wtf(TAG, e); 1920 } 1921 } 1922 1923 private void setStayOnSettingInternal(int val) { 1924 Settings.Global.putInt(mContext.getContentResolver(), 1925 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 1926 } 1927 1928 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 1929 synchronized (mLock) { 1930 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 1931 mDirty |= DIRTY_SETTINGS; 1932 updatePowerStateLocked(); 1933 } 1934 } 1935 1936 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 1937 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 1938 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 1939 } 1940 1941 private void setAttentionLightInternal(boolean on, int color) { 1942 Light light; 1943 synchronized (mLock) { 1944 if (!mSystemReady) { 1945 return; 1946 } 1947 light = mAttentionLight; 1948 } 1949 1950 // Control light outside of lock. 1951 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 1952 } 1953 1954 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 1955 synchronized (mLock) { 1956 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 1957 mScreenBrightnessOverrideFromWindowManager = brightness; 1958 mDirty |= DIRTY_SETTINGS; 1959 updatePowerStateLocked(); 1960 } 1961 } 1962 } 1963 1964 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 1965 synchronized (mLock) { 1966 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 1967 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 1968 mDirty |= DIRTY_SETTINGS; 1969 updatePowerStateLocked(); 1970 } 1971 } 1972 } 1973 1974 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 1975 synchronized (mLock) { 1976 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 1977 mTemporaryScreenBrightnessSettingOverride = brightness; 1978 mDirty |= DIRTY_SETTINGS; 1979 updatePowerStateLocked(); 1980 } 1981 } 1982 } 1983 1984 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 1985 synchronized (mLock) { 1986 // Note: This condition handles NaN because NaN is not equal to any other 1987 // value, including itself. 1988 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 1989 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 1990 mDirty |= DIRTY_SETTINGS; 1991 updatePowerStateLocked(); 1992 } 1993 } 1994 } 1995 1996 /** 1997 * Low-level function turn the device off immediately, without trying 1998 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 1999 */ 2000 public static void lowLevelShutdown() { 2001 SystemProperties.set("sys.powerctl", "shutdown"); 2002 } 2003 2004 /** 2005 * Low-level function to reboot the device. On success, this 2006 * function doesn't return. If more than 20 seconds passes from 2007 * the time a reboot is requested (120 seconds for reboot to 2008 * recovery), this method returns. 2009 * 2010 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2011 */ 2012 public static void lowLevelReboot(String reason) { 2013 if (reason == null) { 2014 reason = ""; 2015 } 2016 long duration; 2017 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2018 // If we are rebooting to go into recovery, instead of 2019 // setting sys.powerctl directly we'll start the 2020 // pre-recovery service which will do some preparation for 2021 // recovery and then reboot for us. 2022 // 2023 // This preparation can take more than 20 seconds if 2024 // there's a very large update package, so lengthen the 2025 // timeout. 2026 SystemProperties.set("ctl.start", "pre-recovery"); 2027 duration = 120 * 1000L; 2028 } else { 2029 SystemProperties.set("sys.powerctl", "reboot," + reason); 2030 duration = 20 * 1000L; 2031 } 2032 try { 2033 Thread.sleep(duration); 2034 } catch (InterruptedException e) { 2035 Thread.currentThread().interrupt(); 2036 } 2037 } 2038 2039 @Override // Watchdog.Monitor implementation 2040 public void monitor() { 2041 // Grab and release lock for watchdog monitor to detect deadlocks. 2042 synchronized (mLock) { 2043 } 2044 } 2045 2046 private void dumpInternal(PrintWriter pw) { 2047 pw.println("POWER MANAGER (dumpsys power)\n"); 2048 2049 final DisplayPowerController dpc; 2050 final WirelessChargerDetector wcd; 2051 synchronized (mLock) { 2052 pw.println("Power Manager State:"); 2053 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2054 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2055 pw.println(" mIsPowered=" + mIsPowered); 2056 pw.println(" mPlugType=" + mPlugType); 2057 pw.println(" mBatteryLevel=" + mBatteryLevel); 2058 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2059 pw.println(" mDockState=" + mDockState); 2060 pw.println(" mStayOn=" + mStayOn); 2061 pw.println(" mProximityPositive=" + mProximityPositive); 2062 pw.println(" mBootCompleted=" + mBootCompleted); 2063 pw.println(" mSystemReady=" + mSystemReady); 2064 pw.println(" mAutoSuspendModeEnabled=" + mAutoSuspendModeEnabled); 2065 pw.println(" mInteactiveModeEnabled=" + mInteractiveModeEnabled); 2066 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2067 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2068 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2069 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2070 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2071 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2072 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2073 pw.println(" mSendWakeUpFinishedNotificationWhenReady=" 2074 + mSendWakeUpFinishedNotificationWhenReady); 2075 pw.println(" mSendGoToSleepFinishedNotificationWhenReady=" 2076 + mSendGoToSleepFinishedNotificationWhenReady); 2077 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2078 pw.println(" mLastUserActivityTimeNoChangeLights=" 2079 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2080 pw.println(" mDisplayReady=" + mDisplayReady); 2081 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2082 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2083 2084 pw.println(); 2085 pw.println("Settings and Configuration:"); 2086 pw.println(" mDecoupleAutoSuspendModeFromDisplayConfig=" 2087 + mDecoupleAutoSuspendModeFromDisplayConfig); 2088 pw.println(" mDecoupleInteractiveModeFromDisplayConfig=" 2089 + mDecoupleInteractiveModeFromDisplayConfig); 2090 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2091 + mWakeUpWhenPluggedOrUnpluggedConfig); 2092 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2093 + mSuspendWhenScreenOffDueToProximityConfig); 2094 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2095 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2096 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2097 + mDreamsActivatedOnSleepByDefaultConfig); 2098 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2099 + mDreamsActivatedOnDockByDefaultConfig); 2100 pw.println(" mDreamsEnabledOnBatteryConfig=" 2101 + mDreamsEnabledOnBatteryConfig); 2102 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2103 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2104 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2105 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2106 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2107 + mDreamsBatteryLevelDrainCutoffConfig); 2108 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2109 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2110 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2111 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2112 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2113 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2114 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2115 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2116 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2117 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2118 + mScreenAutoBrightnessAdjustmentSetting); 2119 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2120 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2121 + mScreenBrightnessOverrideFromWindowManager); 2122 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2123 + mUserActivityTimeoutOverrideFromWindowManager); 2124 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2125 + mTemporaryScreenBrightnessSettingOverride); 2126 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2127 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2128 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2129 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2130 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2131 2132 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2133 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2134 pw.println(); 2135 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2136 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2137 2138 pw.println(); 2139 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2140 for (WakeLock wl : mWakeLocks) { 2141 pw.println(" " + wl); 2142 } 2143 2144 pw.println(); 2145 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2146 for (SuspendBlocker sb : mSuspendBlockers) { 2147 pw.println(" " + sb); 2148 } 2149 2150 pw.println(); 2151 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2152 2153 pw.println(); 2154 pw.println("Display Blanker: " + mDisplayBlanker); 2155 2156 dpc = mDisplayPowerController; 2157 wcd = mWirelessChargerDetector; 2158 } 2159 2160 if (dpc != null) { 2161 dpc.dump(pw); 2162 } 2163 2164 if (wcd != null) { 2165 wcd.dump(pw); 2166 } 2167 } 2168 2169 private SuspendBlocker createSuspendBlockerLocked(String name) { 2170 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2171 mSuspendBlockers.add(suspendBlocker); 2172 return suspendBlocker; 2173 } 2174 2175 private static String wakefulnessToString(int wakefulness) { 2176 switch (wakefulness) { 2177 case WAKEFULNESS_ASLEEP: 2178 return "Asleep"; 2179 case WAKEFULNESS_AWAKE: 2180 return "Awake"; 2181 case WAKEFULNESS_DREAMING: 2182 return "Dreaming"; 2183 case WAKEFULNESS_DOZING: 2184 return "Dozing"; 2185 default: 2186 return Integer.toString(wakefulness); 2187 } 2188 } 2189 2190 private static WorkSource copyWorkSource(WorkSource workSource) { 2191 return workSource != null ? new WorkSource(workSource) : null; 2192 } 2193 2194 private final class BatteryReceiver extends BroadcastReceiver { 2195 @Override 2196 public void onReceive(Context context, Intent intent) { 2197 synchronized (mLock) { 2198 handleBatteryStateChangedLocked(); 2199 } 2200 } 2201 } 2202 2203 private final class BootCompletedReceiver extends BroadcastReceiver { 2204 @Override 2205 public void onReceive(Context context, Intent intent) { 2206 // This is our early signal that the system thinks it has finished booting. 2207 // However, the boot animation may still be running for a few more seconds 2208 // since it is ultimately in charge of when it terminates. 2209 // Defer transitioning into the boot completed state until the animation exits. 2210 // We do this so that the screen does not start to dim prematurely before 2211 // the user has actually had a chance to interact with the device. 2212 startWatchingForBootAnimationFinished(); 2213 } 2214 } 2215 2216 private final class DreamReceiver extends BroadcastReceiver { 2217 @Override 2218 public void onReceive(Context context, Intent intent) { 2219 synchronized (mLock) { 2220 scheduleSandmanLocked(); 2221 } 2222 } 2223 } 2224 2225 private final class UserSwitchedReceiver extends BroadcastReceiver { 2226 @Override 2227 public void onReceive(Context context, Intent intent) { 2228 synchronized (mLock) { 2229 handleSettingsChangedLocked(); 2230 } 2231 } 2232 } 2233 2234 private final class DockReceiver extends BroadcastReceiver { 2235 @Override 2236 public void onReceive(Context context, Intent intent) { 2237 synchronized (mLock) { 2238 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2239 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2240 if (mDockState != dockState) { 2241 mDockState = dockState; 2242 mDirty |= DIRTY_DOCK_STATE; 2243 updatePowerStateLocked(); 2244 } 2245 } 2246 } 2247 } 2248 2249 private final class SettingsObserver extends ContentObserver { 2250 public SettingsObserver(Handler handler) { 2251 super(handler); 2252 } 2253 2254 @Override 2255 public void onChange(boolean selfChange, Uri uri) { 2256 synchronized (mLock) { 2257 handleSettingsChangedLocked(); 2258 } 2259 } 2260 } 2261 2262 /** 2263 * Handler for asynchronous operations performed by the power manager. 2264 */ 2265 private final class PowerManagerHandler extends Handler { 2266 public PowerManagerHandler(Looper looper) { 2267 super(looper, null, true /*async*/); 2268 } 2269 2270 @Override 2271 public void handleMessage(Message msg) { 2272 switch (msg.what) { 2273 case MSG_USER_ACTIVITY_TIMEOUT: 2274 handleUserActivityTimeout(); 2275 break; 2276 case MSG_SANDMAN: 2277 handleSandman(); 2278 break; 2279 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2280 handleScreenOnBlockerReleased(); 2281 break; 2282 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2283 checkIfBootAnimationFinished(); 2284 break; 2285 } 2286 } 2287 } 2288 2289 /** 2290 * Represents a wake lock that has been acquired by an application. 2291 */ 2292 private final class WakeLock implements IBinder.DeathRecipient { 2293 public final IBinder mLock; 2294 public int mFlags; 2295 public String mTag; 2296 public final String mPackageName; 2297 public WorkSource mWorkSource; 2298 public String mHistoryTag; 2299 public final int mOwnerUid; 2300 public final int mOwnerPid; 2301 public boolean mNotifiedAcquired; 2302 2303 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2304 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2305 mLock = lock; 2306 mFlags = flags; 2307 mTag = tag; 2308 mPackageName = packageName; 2309 mWorkSource = copyWorkSource(workSource); 2310 mHistoryTag = historyTag; 2311 mOwnerUid = ownerUid; 2312 mOwnerPid = ownerPid; 2313 } 2314 2315 @Override 2316 public void binderDied() { 2317 PowerManagerService.this.handleWakeLockDeath(this); 2318 } 2319 2320 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2321 int ownerUid, int ownerPid) { 2322 return mFlags == flags 2323 && mTag.equals(tag) 2324 && hasSameWorkSource(workSource) 2325 && mOwnerUid == ownerUid 2326 && mOwnerPid == ownerPid; 2327 } 2328 2329 public void updateProperties(int flags, String tag, String packageName, 2330 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2331 if (!mPackageName.equals(packageName)) { 2332 throw new IllegalStateException("Existing wake lock package name changed: " 2333 + mPackageName + " to " + packageName); 2334 } 2335 if (mOwnerUid != ownerUid) { 2336 throw new IllegalStateException("Existing wake lock uid changed: " 2337 + mOwnerUid + " to " + ownerUid); 2338 } 2339 if (mOwnerPid != ownerPid) { 2340 throw new IllegalStateException("Existing wake lock pid changed: " 2341 + mOwnerPid + " to " + ownerPid); 2342 } 2343 mFlags = flags; 2344 mTag = tag; 2345 updateWorkSource(workSource); 2346 mHistoryTag = historyTag; 2347 } 2348 2349 public boolean hasSameWorkSource(WorkSource workSource) { 2350 return Objects.equal(mWorkSource, workSource); 2351 } 2352 2353 public void updateWorkSource(WorkSource workSource) { 2354 mWorkSource = copyWorkSource(workSource); 2355 } 2356 2357 @Override 2358 public String toString() { 2359 return getLockLevelString() 2360 + " '" + mTag + "'" + getLockFlagsString() 2361 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2362 } 2363 2364 @SuppressWarnings("deprecation") 2365 private String getLockLevelString() { 2366 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2367 case PowerManager.FULL_WAKE_LOCK: 2368 return "FULL_WAKE_LOCK "; 2369 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2370 return "SCREEN_BRIGHT_WAKE_LOCK "; 2371 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2372 return "SCREEN_DIM_WAKE_LOCK "; 2373 case PowerManager.PARTIAL_WAKE_LOCK: 2374 return "PARTIAL_WAKE_LOCK "; 2375 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2376 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2377 case PowerManager.DOZE_WAKE_LOCK: 2378 return "DOZE_WAKE_LOCK "; 2379 default: 2380 return "??? "; 2381 } 2382 } 2383 2384 private String getLockFlagsString() { 2385 String result = ""; 2386 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2387 result += " ACQUIRE_CAUSES_WAKEUP"; 2388 } 2389 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2390 result += " ON_AFTER_RELEASE"; 2391 } 2392 return result; 2393 } 2394 } 2395 2396 private final class SuspendBlockerImpl implements SuspendBlocker { 2397 private final String mName; 2398 private int mReferenceCount; 2399 2400 public SuspendBlockerImpl(String name) { 2401 mName = name; 2402 } 2403 2404 @Override 2405 protected void finalize() throws Throwable { 2406 try { 2407 if (mReferenceCount != 0) { 2408 Log.wtf(TAG, "Suspend blocker \"" + mName 2409 + "\" was finalized without being released!"); 2410 mReferenceCount = 0; 2411 nativeReleaseSuspendBlocker(mName); 2412 } 2413 } finally { 2414 super.finalize(); 2415 } 2416 } 2417 2418 @Override 2419 public void acquire() { 2420 synchronized (this) { 2421 mReferenceCount += 1; 2422 if (mReferenceCount == 1) { 2423 if (DEBUG_SPEW) { 2424 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2425 } 2426 nativeAcquireSuspendBlocker(mName); 2427 } 2428 } 2429 } 2430 2431 @Override 2432 public void release() { 2433 synchronized (this) { 2434 mReferenceCount -= 1; 2435 if (mReferenceCount == 0) { 2436 if (DEBUG_SPEW) { 2437 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2438 } 2439 nativeReleaseSuspendBlocker(mName); 2440 } else if (mReferenceCount < 0) { 2441 Log.wtf(TAG, "Suspend blocker \"" + mName 2442 + "\" was released without being acquired!", new Throwable()); 2443 mReferenceCount = 0; 2444 } 2445 } 2446 } 2447 2448 @Override 2449 public String toString() { 2450 synchronized (this) { 2451 return mName + ": ref count=" + mReferenceCount; 2452 } 2453 } 2454 } 2455 2456 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2457 private int mNestCount; 2458 2459 public boolean isHeld() { 2460 synchronized (this) { 2461 return mNestCount != 0; 2462 } 2463 } 2464 2465 @Override 2466 public void acquire() { 2467 synchronized (this) { 2468 mNestCount += 1; 2469 if (DEBUG) { 2470 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2471 } 2472 } 2473 } 2474 2475 @Override 2476 public void release() { 2477 synchronized (this) { 2478 mNestCount -= 1; 2479 if (mNestCount < 0) { 2480 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2481 new Throwable()); 2482 mNestCount = 0; 2483 } 2484 if (mNestCount == 0) { 2485 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2486 } 2487 if (DEBUG) { 2488 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2489 } 2490 } 2491 } 2492 2493 @Override 2494 public String toString() { 2495 synchronized (this) { 2496 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2497 } 2498 } 2499 } 2500 2501 private final class DisplayBlankerImpl implements DisplayBlanker { 2502 private boolean mBlanked; 2503 2504 @Override 2505 public void blankAllDisplays() { 2506 synchronized (this) { 2507 mBlanked = true; 2508 mDisplayManagerInternal.blankAllDisplaysFromPowerManager(); 2509 if (!mDecoupleInteractiveModeFromDisplayConfig) { 2510 setInteractiveModeLocked(false); 2511 } 2512 if (!mDecoupleAutoSuspendModeFromDisplayConfig) { 2513 setAutoSuspendModeLocked(true); 2514 } 2515 } 2516 } 2517 2518 @Override 2519 public void unblankAllDisplays() { 2520 synchronized (this) { 2521 if (!mDecoupleAutoSuspendModeFromDisplayConfig) { 2522 setAutoSuspendModeLocked(false); 2523 } 2524 if (!mDecoupleInteractiveModeFromDisplayConfig) { 2525 setInteractiveModeLocked(true); 2526 } 2527 mDisplayManagerInternal.unblankAllDisplaysFromPowerManager(); 2528 mBlanked = false; 2529 } 2530 } 2531 2532 @Override 2533 public String toString() { 2534 synchronized (this) { 2535 return "blanked=" + mBlanked; 2536 } 2537 } 2538 } 2539 2540 private final class BinderService extends IPowerManager.Stub { 2541 @Override // Binder call 2542 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2543 String packageName, int uid) { 2544 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2545 } 2546 2547 @Override // Binder call 2548 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2549 WorkSource ws, String historyTag) { 2550 if (lock == null) { 2551 throw new IllegalArgumentException("lock must not be null"); 2552 } 2553 if (packageName == null) { 2554 throw new IllegalArgumentException("packageName must not be null"); 2555 } 2556 PowerManager.validateWakeLockParameters(flags, tag); 2557 2558 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2559 if (ws != null && ws.size() != 0) { 2560 mContext.enforceCallingOrSelfPermission( 2561 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2562 } else { 2563 ws = null; 2564 } 2565 2566 final int uid = Binder.getCallingUid(); 2567 final int pid = Binder.getCallingPid(); 2568 final long ident = Binder.clearCallingIdentity(); 2569 try { 2570 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2571 } finally { 2572 Binder.restoreCallingIdentity(ident); 2573 } 2574 } 2575 2576 @Override // Binder call 2577 public void releaseWakeLock(IBinder lock, int flags) { 2578 if (lock == null) { 2579 throw new IllegalArgumentException("lock must not be null"); 2580 } 2581 2582 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2583 2584 final long ident = Binder.clearCallingIdentity(); 2585 try { 2586 releaseWakeLockInternal(lock, flags); 2587 } finally { 2588 Binder.restoreCallingIdentity(ident); 2589 } 2590 } 2591 2592 @Override // Binder call 2593 public void updateWakeLockUids(IBinder lock, int[] uids) { 2594 WorkSource ws = null; 2595 2596 if (uids != null) { 2597 ws = new WorkSource(); 2598 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2599 // one at a time? 2600 for (int i = 0; i < uids.length; i++) { 2601 ws.add(uids[i]); 2602 } 2603 } 2604 updateWakeLockWorkSource(lock, ws, null); 2605 } 2606 2607 @Override // Binder call 2608 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2609 if (lock == null) { 2610 throw new IllegalArgumentException("lock must not be null"); 2611 } 2612 2613 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2614 if (ws != null && ws.size() != 0) { 2615 mContext.enforceCallingOrSelfPermission( 2616 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2617 } else { 2618 ws = null; 2619 } 2620 2621 final long ident = Binder.clearCallingIdentity(); 2622 try { 2623 updateWakeLockWorkSourceInternal(lock, ws, historyTag); 2624 } finally { 2625 Binder.restoreCallingIdentity(ident); 2626 } 2627 } 2628 2629 @Override // Binder call 2630 public boolean isWakeLockLevelSupported(int level) { 2631 final long ident = Binder.clearCallingIdentity(); 2632 try { 2633 return isWakeLockLevelSupportedInternal(level); 2634 } finally { 2635 Binder.restoreCallingIdentity(ident); 2636 } 2637 } 2638 2639 @Override // Binder call 2640 public void userActivity(long eventTime, int event, int flags) { 2641 final long now = SystemClock.uptimeMillis(); 2642 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2643 != PackageManager.PERMISSION_GRANTED) { 2644 // Once upon a time applications could call userActivity(). 2645 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2646 // request instead of throwing a SecurityException so we don't break old apps. 2647 synchronized (mLock) { 2648 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2649 mLastWarningAboutUserActivityPermission = now; 2650 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2651 + "caller does not have DEVICE_POWER permission. " 2652 + "Please fix your app! " 2653 + " pid=" + Binder.getCallingPid() 2654 + " uid=" + Binder.getCallingUid()); 2655 } 2656 } 2657 return; 2658 } 2659 2660 if (eventTime > SystemClock.uptimeMillis()) { 2661 throw new IllegalArgumentException("event time must not be in the future"); 2662 } 2663 2664 final int uid = Binder.getCallingUid(); 2665 final long ident = Binder.clearCallingIdentity(); 2666 try { 2667 userActivityInternal(eventTime, event, flags, uid); 2668 } finally { 2669 Binder.restoreCallingIdentity(ident); 2670 } 2671 } 2672 2673 @Override // Binder call 2674 public void wakeUp(long eventTime) { 2675 if (eventTime > SystemClock.uptimeMillis()) { 2676 throw new IllegalArgumentException("event time must not be in the future"); 2677 } 2678 2679 mContext.enforceCallingOrSelfPermission( 2680 android.Manifest.permission.DEVICE_POWER, null); 2681 2682 final long ident = Binder.clearCallingIdentity(); 2683 try { 2684 wakeUpInternal(eventTime); 2685 } finally { 2686 Binder.restoreCallingIdentity(ident); 2687 } 2688 } 2689 2690 @Override // Binder call 2691 public void goToSleep(long eventTime, int reason) { 2692 if (eventTime > SystemClock.uptimeMillis()) { 2693 throw new IllegalArgumentException("event time must not be in the future"); 2694 } 2695 2696 mContext.enforceCallingOrSelfPermission( 2697 android.Manifest.permission.DEVICE_POWER, null); 2698 2699 final long ident = Binder.clearCallingIdentity(); 2700 try { 2701 goToSleepInternal(eventTime, reason); 2702 } finally { 2703 Binder.restoreCallingIdentity(ident); 2704 } 2705 } 2706 2707 @Override // Binder call 2708 public void nap(long eventTime) { 2709 if (eventTime > SystemClock.uptimeMillis()) { 2710 throw new IllegalArgumentException("event time must not be in the future"); 2711 } 2712 2713 mContext.enforceCallingOrSelfPermission( 2714 android.Manifest.permission.DEVICE_POWER, null); 2715 2716 final long ident = Binder.clearCallingIdentity(); 2717 try { 2718 napInternal(eventTime); 2719 } finally { 2720 Binder.restoreCallingIdentity(ident); 2721 } 2722 } 2723 2724 @Override // Binder call 2725 public boolean isScreenOn() { 2726 final long ident = Binder.clearCallingIdentity(); 2727 try { 2728 return isScreenOnInternal(); 2729 } finally { 2730 Binder.restoreCallingIdentity(ident); 2731 } 2732 } 2733 2734 /** 2735 * Reboots the device. 2736 * 2737 * @param confirm If true, shows a reboot confirmation dialog. 2738 * @param reason The reason for the reboot, or null if none. 2739 * @param wait If true, this call waits for the reboot to complete and does not return. 2740 */ 2741 @Override // Binder call 2742 public void reboot(boolean confirm, String reason, boolean wait) { 2743 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2744 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2745 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2746 } 2747 2748 final long ident = Binder.clearCallingIdentity(); 2749 try { 2750 shutdownOrRebootInternal(false, confirm, reason, wait); 2751 } finally { 2752 Binder.restoreCallingIdentity(ident); 2753 } 2754 } 2755 2756 /** 2757 * Shuts down the device. 2758 * 2759 * @param confirm If true, shows a shutdown confirmation dialog. 2760 * @param wait If true, this call waits for the shutdown to complete and does not return. 2761 */ 2762 @Override // Binder call 2763 public void shutdown(boolean confirm, boolean wait) { 2764 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2765 2766 final long ident = Binder.clearCallingIdentity(); 2767 try { 2768 shutdownOrRebootInternal(true, confirm, null, wait); 2769 } finally { 2770 Binder.restoreCallingIdentity(ident); 2771 } 2772 } 2773 2774 /** 2775 * Crash the runtime (causing a complete restart of the Android framework). 2776 * Requires REBOOT permission. Mostly for testing. Should not return. 2777 */ 2778 @Override // Binder call 2779 public void crash(String message) { 2780 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2781 2782 final long ident = Binder.clearCallingIdentity(); 2783 try { 2784 crashInternal(message); 2785 } finally { 2786 Binder.restoreCallingIdentity(ident); 2787 } 2788 } 2789 2790 /** 2791 * Set the setting that determines whether the device stays on when plugged in. 2792 * The argument is a bit string, with each bit specifying a power source that, 2793 * when the device is connected to that source, causes the device to stay on. 2794 * See {@link android.os.BatteryManager} for the list of power sources that 2795 * can be specified. Current values include 2796 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2797 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2798 * 2799 * Used by "adb shell svc power stayon ..." 2800 * 2801 * @param val an {@code int} containing the bits that specify which power sources 2802 * should cause the device to stay on. 2803 */ 2804 @Override // Binder call 2805 public void setStayOnSetting(int val) { 2806 mContext.enforceCallingOrSelfPermission( 2807 android.Manifest.permission.WRITE_SETTINGS, null); 2808 2809 final long ident = Binder.clearCallingIdentity(); 2810 try { 2811 setStayOnSettingInternal(val); 2812 } finally { 2813 Binder.restoreCallingIdentity(ident); 2814 } 2815 } 2816 2817 /** 2818 * Used by device administration to set the maximum screen off timeout. 2819 * 2820 * This method must only be called by the device administration policy manager. 2821 */ 2822 @Override // Binder call 2823 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2824 final long ident = Binder.clearCallingIdentity(); 2825 try { 2826 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2827 } finally { 2828 Binder.restoreCallingIdentity(ident); 2829 } 2830 } 2831 2832 /** 2833 * Used by the settings application and brightness control widgets to 2834 * temporarily override the current screen brightness setting so that the 2835 * user can observe the effect of an intended settings change without applying 2836 * it immediately. 2837 * 2838 * The override will be canceled when the setting value is next updated. 2839 * 2840 * @param brightness The overridden brightness. 2841 * 2842 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2843 */ 2844 @Override // Binder call 2845 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2846 mContext.enforceCallingOrSelfPermission( 2847 android.Manifest.permission.DEVICE_POWER, null); 2848 2849 final long ident = Binder.clearCallingIdentity(); 2850 try { 2851 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2852 } finally { 2853 Binder.restoreCallingIdentity(ident); 2854 } 2855 } 2856 2857 /** 2858 * Used by the settings application and brightness control widgets to 2859 * temporarily override the current screen auto-brightness adjustment setting so that the 2860 * user can observe the effect of an intended settings change without applying 2861 * it immediately. 2862 * 2863 * The override will be canceled when the setting value is next updated. 2864 * 2865 * @param adj The overridden brightness, or Float.NaN to disable the override. 2866 * 2867 * @see Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2868 */ 2869 @Override // Binder call 2870 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2871 mContext.enforceCallingOrSelfPermission( 2872 android.Manifest.permission.DEVICE_POWER, null); 2873 2874 final long ident = Binder.clearCallingIdentity(); 2875 try { 2876 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2877 } finally { 2878 Binder.restoreCallingIdentity(ident); 2879 } 2880 } 2881 2882 /** 2883 * Used by the phone application to make the attention LED flash when ringing. 2884 */ 2885 @Override // Binder call 2886 public void setAttentionLight(boolean on, int color) { 2887 mContext.enforceCallingOrSelfPermission( 2888 android.Manifest.permission.DEVICE_POWER, null); 2889 2890 final long ident = Binder.clearCallingIdentity(); 2891 try { 2892 setAttentionLightInternal(on, color); 2893 } finally { 2894 Binder.restoreCallingIdentity(ident); 2895 } 2896 } 2897 2898 @Override // Binder call 2899 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2900 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2901 != PackageManager.PERMISSION_GRANTED) { 2902 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2903 + Binder.getCallingPid() 2904 + ", uid=" + Binder.getCallingUid()); 2905 return; 2906 } 2907 2908 final long ident = Binder.clearCallingIdentity(); 2909 try { 2910 dumpInternal(pw); 2911 } finally { 2912 Binder.restoreCallingIdentity(ident); 2913 } 2914 } 2915 } 2916 2917 private final class LocalService extends PowerManagerInternal { 2918 /** 2919 * Used by the window manager to override the screen brightness based on the 2920 * current foreground activity. 2921 * 2922 * This method must only be called by the window manager. 2923 * 2924 * @param brightness The overridden brightness, or -1 to disable the override. 2925 */ 2926 @Override 2927 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 2928 mContext.enforceCallingOrSelfPermission( 2929 android.Manifest.permission.DEVICE_POWER, null); 2930 2931 final long ident = Binder.clearCallingIdentity(); 2932 try { 2933 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 2934 } finally { 2935 Binder.restoreCallingIdentity(ident); 2936 } 2937 } 2938 2939 /** 2940 * Used by the window manager to override the button brightness based on the 2941 * current foreground activity. 2942 * 2943 * This method must only be called by the window manager. 2944 * 2945 * @param brightness The overridden brightness, or -1 to disable the override. 2946 */ 2947 @Override 2948 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 2949 // Do nothing. 2950 // Button lights are not currently supported in the new implementation. 2951 mContext.enforceCallingOrSelfPermission( 2952 android.Manifest.permission.DEVICE_POWER, null); 2953 } 2954 2955 /** 2956 * Used by the window manager to override the user activity timeout based on the 2957 * current foreground activity. It can only be used to make the timeout shorter 2958 * than usual, not longer. 2959 * 2960 * This method must only be called by the window manager. 2961 * 2962 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 2963 */ 2964 @Override 2965 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 2966 mContext.enforceCallingOrSelfPermission( 2967 android.Manifest.permission.DEVICE_POWER, null); 2968 2969 final long ident = Binder.clearCallingIdentity(); 2970 try { 2971 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 2972 } finally { 2973 Binder.restoreCallingIdentity(ident); 2974 } 2975 } 2976 2977 @Override 2978 public void setPolicy(WindowManagerPolicy policy) { 2979 PowerManagerService.this.setPolicy(policy); 2980 } 2981 } 2982} 2983