PowerManagerService.java revision 1bb480a3a4ce2ce63c5d09fa7f5cc38ec160ebf4
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.power; 18 19import com.android.internal.app.IAppOpsService; 20import com.android.internal.app.IBatteryStats; 21import com.android.internal.os.BackgroundThread; 22import com.android.server.EventLogTags; 23import com.android.server.LocalServices; 24import com.android.server.ServiceThread; 25import com.android.server.am.BatteryStatsService; 26import com.android.server.lights.Light; 27import com.android.server.lights.LightsManager; 28import com.android.server.Watchdog; 29 30import android.Manifest; 31import android.content.BroadcastReceiver; 32import android.content.ContentResolver; 33import android.content.Context; 34import android.content.Intent; 35import android.content.IntentFilter; 36import android.content.pm.PackageManager; 37import android.content.res.Resources; 38import android.database.ContentObserver; 39import android.hardware.SensorManager; 40import android.hardware.SystemSensorManager; 41import android.hardware.display.DisplayManagerInternal; 42import android.hardware.display.DisplayManagerInternal.DisplayPowerRequest; 43import android.net.Uri; 44import android.os.BatteryManager; 45import android.os.BatteryManagerInternal; 46import android.os.Binder; 47import android.os.Handler; 48import android.os.IBinder; 49import android.os.IPowerManager; 50import android.os.Looper; 51import android.os.Message; 52import android.os.PowerManager; 53import android.os.PowerManagerInternal; 54import android.os.Process; 55import android.os.RemoteException; 56import android.os.SystemClock; 57import android.os.SystemProperties; 58import android.os.SystemService; 59import android.os.UserHandle; 60import android.os.WorkSource; 61import android.os.Parcel; 62import android.os.ServiceManager; 63import android.provider.Settings; 64import android.service.dreams.DreamManagerInternal; 65import android.util.EventLog; 66import android.util.Log; 67import android.util.Slog; 68import android.util.TimeUtils; 69import android.view.Display; 70import android.view.WindowManagerPolicy; 71 72import java.io.FileDescriptor; 73import java.io.PrintWriter; 74import java.util.ArrayList; 75 76import libcore.util.Objects; 77 78/** 79 * The power manager service is responsible for coordinating power management 80 * functions on the device. 81 */ 82public final class PowerManagerService extends com.android.server.SystemService 83 implements Watchdog.Monitor { 84 private static final String TAG = "PowerManagerService"; 85 86 private static final boolean DEBUG = false; 87 private static final boolean DEBUG_SPEW = DEBUG && true; 88 89 // Message: Sent when a user activity timeout occurs to update the power state. 90 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 91 // Message: Sent when the device enters or exits a dreaming or dozing state. 92 private static final int MSG_SANDMAN = 2; 93 // Message: Sent when the screen on blocker is released. 94 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 95 // Message: Sent to poll whether the boot animation has terminated. 96 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 97 98 // Dirty bit: mWakeLocks changed 99 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 100 // Dirty bit: mWakefulness changed 101 private static final int DIRTY_WAKEFULNESS = 1 << 1; 102 // Dirty bit: user activity was poked or may have timed out 103 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 104 // Dirty bit: actual display power state was updated asynchronously 105 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 106 // Dirty bit: mBootCompleted changed 107 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 108 // Dirty bit: settings changed 109 private static final int DIRTY_SETTINGS = 1 << 5; 110 // Dirty bit: mIsPowered changed 111 private static final int DIRTY_IS_POWERED = 1 << 6; 112 // Dirty bit: mStayOn changed 113 private static final int DIRTY_STAY_ON = 1 << 7; 114 // Dirty bit: battery state changed 115 private static final int DIRTY_BATTERY_STATE = 1 << 8; 116 // Dirty bit: proximity state changed 117 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 118 // Dirty bit: screen on blocker state became held or unheld 119 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 120 // Dirty bit: dock state changed 121 private static final int DIRTY_DOCK_STATE = 1 << 11; 122 123 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 124 // The screen should be off or in the process of being turned off by the display controller. 125 // The device typically passes through the dozing state first. 126 private static final int WAKEFULNESS_ASLEEP = 0; 127 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 128 // When the user activity timeout expires, the device may start dreaming or go to sleep. 129 private static final int WAKEFULNESS_AWAKE = 1; 130 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 131 // which ends the dream. The device goes to sleep when goToSleep() is called, when 132 // the dream ends or when unplugged. 133 // User activity may brighten the screen but does not end the dream. 134 private static final int WAKEFULNESS_DREAMING = 2; 135 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 136 // low-power "doze" dream to run which keeps the display on but lets the application 137 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 138 // The device fully goes to sleep if the dream cannot be started or ends on its own. 139 private static final int WAKEFULNESS_DOZING = 3; 140 141 // Summarizes the state of all active wakelocks. 142 private static final int WAKE_LOCK_CPU = 1 << 0; 143 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 144 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 145 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 146 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 147 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 148 private static final int WAKE_LOCK_DOZE = 1 << 6; 149 150 // Summarizes the user activity state. 151 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 152 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 153 154 // Default timeout in milliseconds. This is only used until the settings 155 // provider populates the actual default value (R.integer.def_screen_off_timeout). 156 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 157 158 // The name of the boot animation service in init.rc. 159 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 160 161 // Poll interval in milliseconds for watching boot animation finished. 162 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 163 164 // Used to send the hint to the PowerHAL indicating transitions 165 // from and to the low power mode. 166 private static final int POWER_HINT_LOW_POWER_MODE = 5; 167 168 private final Context mContext; 169 private final ServiceThread mHandlerThread; 170 private final PowerManagerHandler mHandler; 171 172 private LightsManager mLightsManager; 173 private BatteryManagerInternal mBatteryManagerInternal; 174 private DisplayManagerInternal mDisplayManagerInternal; 175 private IBatteryStats mBatteryStats; 176 private IAppOpsService mAppOps; 177 private WindowManagerPolicy mPolicy; 178 private Notifier mNotifier; 179 private WirelessChargerDetector mWirelessChargerDetector; 180 private SettingsObserver mSettingsObserver; 181 private DreamManagerInternal mDreamManager; 182 private Light mAttentionLight; 183 184 private final Object mLock = new Object(); 185 186 // A bitfield that indicates what parts of the power state have 187 // changed and need to be recalculated. 188 private int mDirty; 189 190 // Indicates whether the device is awake or asleep or somewhere in between. 191 // This is distinct from the screen power state, which is managed separately. 192 private int mWakefulness; 193 194 // True if the sandman has just been summoned for the first time since entering the 195 // dreaming or dozing state. Indicates whether a new dream should begin. 196 private boolean mSandmanSummoned; 197 198 // True if MSG_SANDMAN has been scheduled. 199 private boolean mSandmanScheduled; 200 201 // Table of all suspend blockers. 202 // There should only be a few of these. 203 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 204 205 // Table of all wake locks acquired by applications. 206 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 207 208 // A bitfield that summarizes the state of all active wakelocks. 209 private int mWakeLockSummary; 210 211 // True if the device is in an interactive state. 212 private boolean mInteractive; 213 private boolean mInteractiveChanging; 214 215 // If true, instructs the display controller to wait for the proximity sensor to 216 // go negative before turning the screen on. 217 private boolean mRequestWaitForNegativeProximity; 218 219 // Timestamp of the last time the device was awoken or put to sleep. 220 private long mLastWakeTime; 221 private long mLastSleepTime; 222 223 // Timestamp of the last call to user activity. 224 private long mLastUserActivityTime; 225 private long mLastUserActivityTimeNoChangeLights; 226 227 // A bitfield that summarizes the effect of the user activity timer. 228 // A zero value indicates that the user activity timer has expired. 229 private int mUserActivitySummary; 230 231 // The desired display power state. The actual state may lag behind the 232 // requested because it is updated asynchronously by the display power controller. 233 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 234 235 // True if the display power state has been fully applied, which means the display 236 // is actually on or actually off or whatever was requested. 237 private boolean mDisplayReady; 238 239 // The suspend blocker used to keep the CPU alive when an application has acquired 240 // a wake lock. 241 private final SuspendBlocker mWakeLockSuspendBlocker; 242 243 // True if the wake lock suspend blocker has been acquired. 244 private boolean mHoldingWakeLockSuspendBlocker; 245 246 // The suspend blocker used to keep the CPU alive when the display is on, the 247 // display is getting ready or there is user activity (in which case the display 248 // must be on). 249 private final SuspendBlocker mDisplaySuspendBlocker; 250 251 // True if the display suspend blocker has been acquired. 252 private boolean mHoldingDisplaySuspendBlocker; 253 254 // The screen on blocker used to keep the screen from turning on while the lock 255 // screen is coming up. 256 private final ScreenOnBlockerImpl mScreenOnBlocker; 257 258 // True if systemReady() has been called. 259 private boolean mSystemReady; 260 261 // True if boot completed occurred. We keep the screen on until this happens. 262 private boolean mBootCompleted; 263 264 // True if auto-suspend mode is enabled. 265 // Refer to autosuspend.h. 266 private boolean mHalAutoSuspendModeEnabled; 267 268 // True if interactive mode is enabled. 269 // Refer to power.h. 270 private boolean mHalInteractiveModeEnabled; 271 272 // True if the device is plugged into a power source. 273 private boolean mIsPowered; 274 275 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 276 private int mPlugType; 277 278 // The current battery level percentage. 279 private int mBatteryLevel; 280 281 // The battery level percentage at the time the dream started. 282 // This is used to terminate a dream and go to sleep if the battery is 283 // draining faster than it is charging and the user activity timeout has expired. 284 private int mBatteryLevelWhenDreamStarted; 285 286 // The current dock state. 287 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 288 289 // True to decouple auto-suspend mode from the display state. 290 private boolean mDecoupleHalAutoSuspendModeFromDisplayConfig; 291 292 // True to decouple interactive mode from the display state. 293 private boolean mDecoupleHalInteractiveModeFromDisplayConfig; 294 295 // True if the device should wake up when plugged or unplugged. 296 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 297 298 // True if the device should suspend when the screen is off due to proximity. 299 private boolean mSuspendWhenScreenOffDueToProximityConfig; 300 301 // True if dreams are supported on this device. 302 private boolean mDreamsSupportedConfig; 303 304 // Default value for dreams enabled 305 private boolean mDreamsEnabledByDefaultConfig; 306 307 // Default value for dreams activate-on-sleep 308 private boolean mDreamsActivatedOnSleepByDefaultConfig; 309 310 // Default value for dreams activate-on-dock 311 private boolean mDreamsActivatedOnDockByDefaultConfig; 312 313 // True if dreams can run while not plugged in. 314 private boolean mDreamsEnabledOnBatteryConfig; 315 316 // Minimum battery level to allow dreaming when powered. 317 // Use -1 to disable this safety feature. 318 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 319 320 // Minimum battery level to allow dreaming when not powered. 321 // Use -1 to disable this safety feature. 322 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 323 324 // If the battery level drops by this percentage and the user activity timeout 325 // has expired, then assume the device is receiving insufficient current to charge 326 // effectively and terminate the dream. Use -1 to disable this safety feature. 327 private int mDreamsBatteryLevelDrainCutoffConfig; 328 329 // True if dreams are enabled by the user. 330 private boolean mDreamsEnabledSetting; 331 332 // True if dreams should be activated on sleep. 333 private boolean mDreamsActivateOnSleepSetting; 334 335 // True if dreams should be activated on dock. 336 private boolean mDreamsActivateOnDockSetting; 337 338 // The minimum screen off timeout, in milliseconds. 339 private int mMinimumScreenOffTimeoutConfig; 340 341 // The screen dim duration, in milliseconds. 342 // This is subtracted from the end of the screen off timeout so the 343 // minimum screen off timeout should be longer than this. 344 private int mMaximumScreenDimDurationConfig; 345 346 // The maximum screen dim time expressed as a ratio relative to the screen 347 // off timeout. If the screen off timeout is very short then we want the 348 // dim timeout to also be quite short so that most of the time is spent on. 349 // Otherwise the user won't get much screen on time before dimming occurs. 350 private float mMaximumScreenDimRatioConfig; 351 352 // The screen off timeout setting value in milliseconds. 353 private int mScreenOffTimeoutSetting; 354 355 // The maximum allowable screen off timeout according to the device 356 // administration policy. Overrides other settings. 357 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 358 359 // The stay on while plugged in setting. 360 // A bitfield of battery conditions under which to make the screen stay on. 361 private int mStayOnWhilePluggedInSetting; 362 363 // True if the device should stay on. 364 private boolean mStayOn; 365 366 // True if the proximity sensor reads a positive result. 367 private boolean mProximityPositive; 368 369 // Screen brightness setting limits. 370 private int mScreenBrightnessSettingMinimum; 371 private int mScreenBrightnessSettingMaximum; 372 private int mScreenBrightnessSettingDefault; 373 374 // The screen brightness setting, from 0 to 255. 375 // Use -1 if no value has been set. 376 private int mScreenBrightnessSetting; 377 378 // The screen auto-brightness adjustment setting, from -1 to 1. 379 // Use 0 if there is no adjustment. 380 private float mScreenAutoBrightnessAdjustmentSetting; 381 382 // The screen brightness mode. 383 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 384 private int mScreenBrightnessModeSetting; 385 386 // The screen brightness setting override from the window manager 387 // to allow the current foreground activity to override the brightness. 388 // Use -1 to disable. 389 private int mScreenBrightnessOverrideFromWindowManager = -1; 390 391 // The user activity timeout override from the window manager 392 // to allow the current foreground activity to override the user activity timeout. 393 // Use -1 to disable. 394 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 395 396 // The screen brightness setting override from the settings application 397 // to temporarily adjust the brightness until next updated, 398 // Use -1 to disable. 399 private int mTemporaryScreenBrightnessSettingOverride = -1; 400 401 // The screen brightness adjustment setting override from the settings 402 // application to temporarily adjust the auto-brightness adjustment factor 403 // until next updated, in the range -1..1. 404 // Use NaN to disable. 405 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 406 407 // The screen state to use while dozing. 408 private int mDozeScreenStateOverrideFromDreamManager = Display.STATE_UNKNOWN; 409 410 // The screen brightness to use while dozing. 411 private int mDozeScreenBrightnessOverrideFromDreamManager = PowerManager.BRIGHTNESS_DEFAULT; 412 413 // Time when we last logged a warning about calling userActivity() without permission. 414 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 415 416 // If true, the device is in low power mode. 417 private boolean mLowPowerModeEnabled; 418 419 // Current state of the low power mode setting. 420 private boolean mLowPowerModeSetting; 421 422 // Current state of whether the settings are allowing auto low power mode. 423 private boolean mAutoLowPowerModeEnabled; 424 425 // The user turned off low power mode below the trigger level 426 private boolean mAutoLowPowerModeSnoozing; 427 428 // True if the battery level is currently considered low. 429 private boolean mBatteryLevelLow; 430 431 private final ArrayList<PowerManagerInternal.LowPowerModeListener> mLowPowerModeListeners 432 = new ArrayList<PowerManagerInternal.LowPowerModeListener>(); 433 434 private native void nativeInit(); 435 436 private static native void nativeAcquireSuspendBlocker(String name); 437 private static native void nativeReleaseSuspendBlocker(String name); 438 private static native void nativeSetInteractive(boolean enable); 439 private static native void nativeSetAutoSuspend(boolean enable); 440 private static native void nativeSendPowerHint(int hintId, int data); 441 442 public PowerManagerService(Context context) { 443 super(context); 444 mContext = context; 445 mHandlerThread = new ServiceThread(TAG, 446 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 447 mHandlerThread.start(); 448 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 449 450 synchronized (mLock) { 451 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 452 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 453 mDisplaySuspendBlocker.acquire(); 454 mHoldingDisplaySuspendBlocker = true; 455 mHalAutoSuspendModeEnabled = false; 456 mHalInteractiveModeEnabled = true; 457 458 mScreenOnBlocker = new ScreenOnBlockerImpl(); 459 mWakefulness = WAKEFULNESS_AWAKE; 460 mInteractive = true; 461 462 nativeInit(); 463 nativeSetAutoSuspend(false); 464 nativeSetInteractive(true); 465 } 466 } 467 468 @Override 469 public void onStart() { 470 publishBinderService(Context.POWER_SERVICE, new BinderService()); 471 publishLocalService(PowerManagerInternal.class, new LocalService()); 472 473 Watchdog.getInstance().addMonitor(this); 474 Watchdog.getInstance().addThread(mHandler); 475 } 476 477 public void systemReady(IAppOpsService appOps) { 478 synchronized (mLock) { 479 mSystemReady = true; 480 mAppOps = appOps; 481 mDreamManager = getLocalService(DreamManagerInternal.class); 482 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 483 mPolicy = getLocalService(WindowManagerPolicy.class); 484 mBatteryManagerInternal = getLocalService(BatteryManagerInternal.class); 485 486 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 487 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 488 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 489 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 490 491 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 492 493 // The notifier runs on the system server's main looper so as not to interfere 494 // with the animations and other critical functions of the power manager. 495 mBatteryStats = BatteryStatsService.getService(); 496 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 497 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 498 mScreenOnBlocker, mPolicy); 499 500 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 501 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 502 mHandler); 503 mSettingsObserver = new SettingsObserver(mHandler); 504 505 mLightsManager = getLocalService(LightsManager.class); 506 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 507 508 // Initialize display power management. 509 mDisplayManagerInternal.initPowerManagement( 510 mDisplayPowerCallbacks, mHandler, sensorManager); 511 512 // Register for broadcasts from other components of the system. 513 IntentFilter filter = new IntentFilter(); 514 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 515 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 516 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 517 518 filter = new IntentFilter(); 519 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 520 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 521 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 522 523 filter = new IntentFilter(); 524 filter.addAction(Intent.ACTION_DREAMING_STARTED); 525 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 526 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 527 528 filter = new IntentFilter(); 529 filter.addAction(Intent.ACTION_USER_SWITCHED); 530 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 531 532 filter = new IntentFilter(); 533 filter.addAction(Intent.ACTION_DOCK_EVENT); 534 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 535 536 // Register for settings changes. 537 final ContentResolver resolver = mContext.getContentResolver(); 538 resolver.registerContentObserver(Settings.Secure.getUriFor( 539 Settings.Secure.SCREENSAVER_ENABLED), 540 false, mSettingsObserver, UserHandle.USER_ALL); 541 resolver.registerContentObserver(Settings.Secure.getUriFor( 542 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 543 false, mSettingsObserver, UserHandle.USER_ALL); 544 resolver.registerContentObserver(Settings.Secure.getUriFor( 545 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 546 false, mSettingsObserver, UserHandle.USER_ALL); 547 resolver.registerContentObserver(Settings.System.getUriFor( 548 Settings.System.SCREEN_OFF_TIMEOUT), 549 false, mSettingsObserver, UserHandle.USER_ALL); 550 resolver.registerContentObserver(Settings.Global.getUriFor( 551 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 552 false, mSettingsObserver, UserHandle.USER_ALL); 553 resolver.registerContentObserver(Settings.System.getUriFor( 554 Settings.System.SCREEN_BRIGHTNESS), 555 false, mSettingsObserver, UserHandle.USER_ALL); 556 resolver.registerContentObserver(Settings.System.getUriFor( 557 Settings.System.SCREEN_BRIGHTNESS_MODE), 558 false, mSettingsObserver, UserHandle.USER_ALL); 559 resolver.registerContentObserver(Settings.System.getUriFor( 560 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ), 561 false, mSettingsObserver, UserHandle.USER_ALL); 562 resolver.registerContentObserver(Settings.Global.getUriFor( 563 Settings.Global.LOW_POWER_MODE), 564 false, mSettingsObserver, UserHandle.USER_ALL); 565 resolver.registerContentObserver(Settings.Global.getUriFor( 566 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL), 567 false, mSettingsObserver, UserHandle.USER_ALL); 568 // Go. 569 readConfigurationLocked(); 570 updateSettingsLocked(); 571 mDirty |= DIRTY_BATTERY_STATE; 572 updatePowerStateLocked(); 573 } 574 } 575 576 private void readConfigurationLocked() { 577 final Resources resources = mContext.getResources(); 578 579 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 580 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 581 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 582 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 583 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 584 com.android.internal.R.bool.config_unplugTurnsOnScreen); 585 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 586 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 587 mDreamsSupportedConfig = resources.getBoolean( 588 com.android.internal.R.bool.config_dreamsSupported); 589 mDreamsEnabledByDefaultConfig = resources.getBoolean( 590 com.android.internal.R.bool.config_dreamsEnabledByDefault); 591 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 592 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 593 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 594 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 595 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 596 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 597 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 598 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 599 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 600 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 601 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 602 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 603 mMinimumScreenOffTimeoutConfig = resources.getInteger( 604 com.android.internal.R.integer.config_minimumScreenOffTimeout); 605 mMaximumScreenDimDurationConfig = resources.getInteger( 606 com.android.internal.R.integer.config_maximumScreenDimDuration); 607 mMaximumScreenDimRatioConfig = resources.getFraction( 608 com.android.internal.R.fraction.config_maximumScreenDimRatio, 1, 1); 609 } 610 611 private void updateSettingsLocked() { 612 final ContentResolver resolver = mContext.getContentResolver(); 613 614 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 615 Settings.Secure.SCREENSAVER_ENABLED, 616 mDreamsEnabledByDefaultConfig ? 1 : 0, 617 UserHandle.USER_CURRENT) != 0); 618 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 619 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 620 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 621 UserHandle.USER_CURRENT) != 0); 622 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 623 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 624 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 625 UserHandle.USER_CURRENT) != 0); 626 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 627 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 628 UserHandle.USER_CURRENT); 629 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 630 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 631 632 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 633 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 634 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 635 UserHandle.USER_CURRENT); 636 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 637 mTemporaryScreenBrightnessSettingOverride = -1; 638 } 639 640 final float oldScreenAutoBrightnessAdjustmentSetting = 641 mScreenAutoBrightnessAdjustmentSetting; 642 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 643 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 644 UserHandle.USER_CURRENT); 645 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 646 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 647 } 648 649 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 650 Settings.System.SCREEN_BRIGHTNESS_MODE, 651 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 652 653 final boolean lowPowerModeEnabled = Settings.Global.getInt(resolver, 654 Settings.Global.LOW_POWER_MODE, 0) != 0; 655 final boolean autoLowPowerModeEnabled = Settings.Global.getInt(resolver, 656 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL, 0) != 0; 657 if (lowPowerModeEnabled != mLowPowerModeSetting 658 || autoLowPowerModeEnabled != mAutoLowPowerModeEnabled) { 659 if (lowPowerModeEnabled != mLowPowerModeSetting) { 660 if (!mAutoLowPowerModeSnoozing && !lowPowerModeEnabled && !mIsPowered 661 && mAutoLowPowerModeEnabled) { 662 if (DEBUG_SPEW) { 663 Slog.d(TAG, "updateSettingsLocked: snoozing low power mode"); 664 } 665 mAutoLowPowerModeSnoozing = true; 666 } else if (mAutoLowPowerModeSnoozing && lowPowerModeEnabled) { 667 if (DEBUG_SPEW) { 668 Slog.d(TAG, "updateSettingsLocked: no longer snoozing low power mode"); 669 } 670 mAutoLowPowerModeSnoozing = true; 671 } 672 } 673 mLowPowerModeSetting = lowPowerModeEnabled; 674 mAutoLowPowerModeEnabled = autoLowPowerModeEnabled; 675 updateLowPowerModeLocked(); 676 } 677 678 mDirty |= DIRTY_SETTINGS; 679 } 680 681 void updateLowPowerModeLocked() { 682 if (mIsPowered && mLowPowerModeSetting) { 683 if (DEBUG_SPEW) { 684 Slog.d(TAG, "updateLowPowerModeLocked: powered, turning setting off"); 685 } 686 // Turn setting off if powered 687 Settings.Global.putInt(mContext.getContentResolver(), 688 Settings.Global.LOW_POWER_MODE, 0); 689 mLowPowerModeSetting = false; 690 } else if (!mIsPowered && mAutoLowPowerModeEnabled && !mAutoLowPowerModeSnoozing 691 && mBatteryLevelLow && !mLowPowerModeSetting) { 692 if (DEBUG_SPEW) { 693 Slog.d(TAG, "updateLowPowerModeLocked: trigger level reached, turning setting on"); 694 } 695 // Turn setting on if trigger level is enabled, and we're now below it 696 Settings.Global.putInt(mContext.getContentResolver(), 697 Settings.Global.LOW_POWER_MODE, 1); 698 mLowPowerModeSetting = true; 699 } 700 final boolean lowPowerModeEnabled = mLowPowerModeSetting; 701 if (mLowPowerModeEnabled != lowPowerModeEnabled) { 702 mLowPowerModeEnabled = lowPowerModeEnabled; 703 powerHintInternal(POWER_HINT_LOW_POWER_MODE, lowPowerModeEnabled ? 1 : 0); 704 setSurfaceFlingerLowPowerMode(lowPowerModeEnabled ? 1 : 0); 705 mLowPowerModeEnabled = lowPowerModeEnabled; 706 BackgroundThread.getHandler().post(new Runnable() { 707 @Override 708 public void run() { 709 Intent intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGING) 710 .putExtra(PowerManager.EXTRA_POWER_SAVE_MODE, mLowPowerModeEnabled) 711 .addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 712 mContext.sendBroadcast(intent); 713 ArrayList<PowerManagerInternal.LowPowerModeListener> listeners; 714 synchronized (mLock) { 715 listeners = new ArrayList<PowerManagerInternal.LowPowerModeListener>( 716 mLowPowerModeListeners); 717 } 718 for (int i=0; i<listeners.size(); i++) { 719 listeners.get(i).onLowPowerModeChanged(lowPowerModeEnabled); 720 } 721 intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED); 722 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 723 mContext.sendBroadcast(intent); 724 } 725 }); 726 } 727 } 728 729 private void handleSettingsChangedLocked() { 730 updateSettingsLocked(); 731 updatePowerStateLocked(); 732 } 733 734 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 735 WorkSource ws, String historyTag, int uid, int pid) { 736 synchronized (mLock) { 737 if (DEBUG_SPEW) { 738 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 739 + ", flags=0x" + Integer.toHexString(flags) 740 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 741 } 742 743 WakeLock wakeLock; 744 int index = findWakeLockIndexLocked(lock); 745 boolean notifyAcquire; 746 if (index >= 0) { 747 wakeLock = mWakeLocks.get(index); 748 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 749 // Update existing wake lock. This shouldn't happen but is harmless. 750 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 751 uid, pid, ws, historyTag); 752 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 753 } 754 notifyAcquire = false; 755 } else { 756 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 757 try { 758 lock.linkToDeath(wakeLock, 0); 759 } catch (RemoteException ex) { 760 throw new IllegalArgumentException("Wake lock is already dead."); 761 } 762 mWakeLocks.add(wakeLock); 763 notifyAcquire = true; 764 } 765 766 applyWakeLockFlagsOnAcquireLocked(wakeLock); 767 mDirty |= DIRTY_WAKE_LOCKS; 768 updatePowerStateLocked(); 769 if (notifyAcquire) { 770 // This needs to be done last so we are sure we have acquired the 771 // kernel wake lock. Otherwise we have a race where the system may 772 // go to sleep between the time we start the accounting in battery 773 // stats and when we actually get around to telling the kernel to 774 // stay awake. 775 notifyWakeLockAcquiredLocked(wakeLock); 776 } 777 } 778 } 779 780 @SuppressWarnings("deprecation") 781 private static boolean isScreenLock(final WakeLock wakeLock) { 782 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 783 case PowerManager.FULL_WAKE_LOCK: 784 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 785 case PowerManager.SCREEN_DIM_WAKE_LOCK: 786 return true; 787 } 788 return false; 789 } 790 791 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 792 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 793 && isScreenLock(wakeLock)) { 794 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 795 } 796 } 797 798 private void releaseWakeLockInternal(IBinder lock, int flags) { 799 synchronized (mLock) { 800 int index = findWakeLockIndexLocked(lock); 801 if (index < 0) { 802 if (DEBUG_SPEW) { 803 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 804 + " [not found], flags=0x" + Integer.toHexString(flags)); 805 } 806 return; 807 } 808 809 WakeLock wakeLock = mWakeLocks.get(index); 810 if (DEBUG_SPEW) { 811 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 812 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 813 } 814 815 mWakeLocks.remove(index); 816 notifyWakeLockReleasedLocked(wakeLock); 817 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 818 819 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 820 mRequestWaitForNegativeProximity = true; 821 } 822 823 applyWakeLockFlagsOnReleaseLocked(wakeLock); 824 mDirty |= DIRTY_WAKE_LOCKS; 825 updatePowerStateLocked(); 826 } 827 } 828 829 private void handleWakeLockDeath(WakeLock wakeLock) { 830 synchronized (mLock) { 831 if (DEBUG_SPEW) { 832 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 833 + " [" + wakeLock.mTag + "]"); 834 } 835 836 int index = mWakeLocks.indexOf(wakeLock); 837 if (index < 0) { 838 return; 839 } 840 841 mWakeLocks.remove(index); 842 notifyWakeLockReleasedLocked(wakeLock); 843 844 applyWakeLockFlagsOnReleaseLocked(wakeLock); 845 mDirty |= DIRTY_WAKE_LOCKS; 846 updatePowerStateLocked(); 847 } 848 } 849 850 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 851 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 852 && isScreenLock(wakeLock)) { 853 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 854 PowerManager.USER_ACTIVITY_EVENT_OTHER, 855 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 856 wakeLock.mOwnerUid); 857 } 858 } 859 860 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag) { 861 synchronized (mLock) { 862 int index = findWakeLockIndexLocked(lock); 863 if (index < 0) { 864 if (DEBUG_SPEW) { 865 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 866 + " [not found], ws=" + ws); 867 } 868 throw new IllegalArgumentException("Wake lock not active"); 869 } 870 871 WakeLock wakeLock = mWakeLocks.get(index); 872 if (DEBUG_SPEW) { 873 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 874 + " [" + wakeLock.mTag + "], ws=" + ws); 875 } 876 877 if (!wakeLock.hasSameWorkSource(ws)) { 878 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 879 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 880 ws, historyTag); 881 wakeLock.mHistoryTag = historyTag; 882 wakeLock.updateWorkSource(ws); 883 } 884 } 885 } 886 887 private int findWakeLockIndexLocked(IBinder lock) { 888 final int count = mWakeLocks.size(); 889 for (int i = 0; i < count; i++) { 890 if (mWakeLocks.get(i).mLock == lock) { 891 return i; 892 } 893 } 894 return -1; 895 } 896 897 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 898 if (mSystemReady) { 899 wakeLock.mNotifiedAcquired = true; 900 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 901 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 902 wakeLock.mHistoryTag); 903 } 904 } 905 906 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 907 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 908 if (mSystemReady && wakeLock.mNotifiedAcquired) { 909 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 910 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 911 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 912 } 913 } 914 915 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 916 if (mSystemReady && wakeLock.mNotifiedAcquired) { 917 wakeLock.mNotifiedAcquired = false; 918 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, 919 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 920 wakeLock.mWorkSource, wakeLock.mHistoryTag); 921 } 922 } 923 924 @SuppressWarnings("deprecation") 925 private boolean isWakeLockLevelSupportedInternal(int level) { 926 synchronized (mLock) { 927 switch (level) { 928 case PowerManager.PARTIAL_WAKE_LOCK: 929 case PowerManager.SCREEN_DIM_WAKE_LOCK: 930 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 931 case PowerManager.FULL_WAKE_LOCK: 932 case PowerManager.DOZE_WAKE_LOCK: 933 return true; 934 935 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 936 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 937 938 default: 939 return false; 940 } 941 } 942 } 943 944 // Called from native code. 945 private void userActivityFromNative(long eventTime, int event, int flags) { 946 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 947 } 948 949 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 950 synchronized (mLock) { 951 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 952 updatePowerStateLocked(); 953 } 954 } 955 } 956 957 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 958 if (DEBUG_SPEW) { 959 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 960 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 961 + ", uid=" + uid); 962 } 963 964 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 965 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 966 || !mBootCompleted || !mSystemReady) { 967 return false; 968 } 969 970 mNotifier.onUserActivity(event, uid); 971 972 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 973 if (eventTime > mLastUserActivityTimeNoChangeLights 974 && eventTime > mLastUserActivityTime) { 975 mLastUserActivityTimeNoChangeLights = eventTime; 976 mDirty |= DIRTY_USER_ACTIVITY; 977 return true; 978 } 979 } else { 980 if (eventTime > mLastUserActivityTime) { 981 mLastUserActivityTime = eventTime; 982 mDirty |= DIRTY_USER_ACTIVITY; 983 return true; 984 } 985 } 986 return false; 987 } 988 989 private void wakeUpInternal(long eventTime) { 990 synchronized (mLock) { 991 if (wakeUpNoUpdateLocked(eventTime)) { 992 updatePowerStateLocked(); 993 } 994 } 995 } 996 997 private boolean wakeUpNoUpdateLocked(long eventTime) { 998 if (DEBUG_SPEW) { 999 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 1000 } 1001 1002 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 1003 || !mBootCompleted || !mSystemReady) { 1004 return false; 1005 } 1006 1007 switch (mWakefulness) { 1008 case WAKEFULNESS_ASLEEP: 1009 Slog.i(TAG, "Waking up from sleep..."); 1010 break; 1011 case WAKEFULNESS_DREAMING: 1012 Slog.i(TAG, "Waking up from dream..."); 1013 break; 1014 case WAKEFULNESS_DOZING: 1015 Slog.i(TAG, "Waking up from dozing..."); 1016 break; 1017 } 1018 1019 mLastWakeTime = eventTime; 1020 mDirty |= DIRTY_WAKEFULNESS; 1021 mWakefulness = WAKEFULNESS_AWAKE; 1022 setInteractiveStateLocked(true, 0); 1023 1024 userActivityNoUpdateLocked( 1025 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1026 return true; 1027 } 1028 1029 private void goToSleepInternal(long eventTime, int reason, int flags) { 1030 synchronized (mLock) { 1031 if (goToSleepNoUpdateLocked(eventTime, reason, flags)) { 1032 updatePowerStateLocked(); 1033 } 1034 } 1035 } 1036 1037 // This method is called goToSleep for historical reasons but we actually start 1038 // dozing before really going to sleep. 1039 @SuppressWarnings("deprecation") 1040 private boolean goToSleepNoUpdateLocked(long eventTime, int reason, int flags) { 1041 if (DEBUG_SPEW) { 1042 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime 1043 + ", reason=" + reason + ", flags=" + flags); 1044 } 1045 1046 if (eventTime < mLastWakeTime 1047 || mWakefulness == WAKEFULNESS_ASLEEP 1048 || mWakefulness == WAKEFULNESS_DOZING 1049 || !mBootCompleted || !mSystemReady) { 1050 return false; 1051 } 1052 1053 switch (reason) { 1054 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 1055 Slog.i(TAG, "Going to sleep due to device administration policy..."); 1056 break; 1057 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 1058 Slog.i(TAG, "Going to sleep due to screen timeout..."); 1059 break; 1060 default: 1061 Slog.i(TAG, "Going to sleep by user request..."); 1062 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 1063 break; 1064 } 1065 1066 mLastSleepTime = eventTime; 1067 mDirty |= DIRTY_WAKEFULNESS; 1068 mWakefulness = WAKEFULNESS_DOZING; 1069 mSandmanSummoned = true; 1070 setInteractiveStateLocked(false, reason); 1071 1072 // Report the number of wake locks that will be cleared by going to sleep. 1073 int numWakeLocksCleared = 0; 1074 final int numWakeLocks = mWakeLocks.size(); 1075 for (int i = 0; i < numWakeLocks; i++) { 1076 final WakeLock wakeLock = mWakeLocks.get(i); 1077 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1078 case PowerManager.FULL_WAKE_LOCK: 1079 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1080 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1081 numWakeLocksCleared += 1; 1082 break; 1083 } 1084 } 1085 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 1086 1087 // Skip dozing if requested. 1088 if ((flags & PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE) != 0) { 1089 reallyGoToSleepNoUpdateLocked(eventTime); 1090 } 1091 return true; 1092 } 1093 1094 private void napInternal(long eventTime) { 1095 synchronized (mLock) { 1096 if (napNoUpdateLocked(eventTime)) { 1097 updatePowerStateLocked(); 1098 } 1099 } 1100 } 1101 1102 private boolean napNoUpdateLocked(long eventTime) { 1103 if (DEBUG_SPEW) { 1104 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 1105 } 1106 1107 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1108 || !mBootCompleted || !mSystemReady) { 1109 return false; 1110 } 1111 1112 Slog.i(TAG, "Nap time..."); 1113 1114 mDirty |= DIRTY_WAKEFULNESS; 1115 mWakefulness = WAKEFULNESS_DREAMING; 1116 mSandmanSummoned = true; 1117 setInteractiveStateLocked(true, 0); 1118 return true; 1119 } 1120 1121 // Done dozing, drop everything and go to sleep. 1122 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 1123 if (DEBUG_SPEW) { 1124 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 1125 } 1126 1127 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1128 || !mBootCompleted || !mSystemReady) { 1129 return false; 1130 } 1131 1132 Slog.i(TAG, "Sleeping..."); 1133 1134 mDirty |= DIRTY_WAKEFULNESS; 1135 mWakefulness = WAKEFULNESS_ASLEEP; 1136 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1137 return true; 1138 } 1139 1140 private void setInteractiveStateLocked(boolean interactive, int reason) { 1141 if (mInteractive != interactive) { 1142 finishInteractiveStateChangeLocked(); 1143 1144 mInteractive = interactive; 1145 mInteractiveChanging = true; 1146 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1147 } 1148 } 1149 1150 private void finishInteractiveStateChangeLocked() { 1151 if (mInteractiveChanging) { 1152 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1153 mInteractiveChanging = false; 1154 } 1155 } 1156 1157 /** 1158 * Updates the global power state based on dirty bits recorded in mDirty. 1159 * 1160 * This is the main function that performs power state transitions. 1161 * We centralize them here so that we can recompute the power state completely 1162 * each time something important changes, and ensure that we do it the same 1163 * way each time. The point is to gather all of the transition logic here. 1164 */ 1165 private void updatePowerStateLocked() { 1166 if (!mSystemReady || mDirty == 0) { 1167 return; 1168 } 1169 if (!Thread.holdsLock(mLock)) { 1170 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1171 } 1172 1173 // Phase 0: Basic state updates. 1174 updateIsPoweredLocked(mDirty); 1175 updateStayOnLocked(mDirty); 1176 1177 // Phase 1: Update wakefulness. 1178 // Loop because the wake lock and user activity computations are influenced 1179 // by changes in wakefulness. 1180 final long now = SystemClock.uptimeMillis(); 1181 int dirtyPhase2 = 0; 1182 for (;;) { 1183 int dirtyPhase1 = mDirty; 1184 dirtyPhase2 |= dirtyPhase1; 1185 mDirty = 0; 1186 1187 updateWakeLockSummaryLocked(dirtyPhase1); 1188 updateUserActivitySummaryLocked(now, dirtyPhase1); 1189 if (!updateWakefulnessLocked(dirtyPhase1)) { 1190 break; 1191 } 1192 } 1193 1194 // Phase 2: Update dreams and display power state. 1195 updateDreamLocked(dirtyPhase2); 1196 updateDisplayPowerStateLocked(dirtyPhase2); 1197 1198 // Phase 3: Send notifications, if needed. 1199 if (mDisplayReady) { 1200 finishInteractiveStateChangeLocked(); 1201 } 1202 1203 // Phase 4: Update suspend blocker. 1204 // Because we might release the last suspend blocker here, we need to make sure 1205 // we finished everything else first! 1206 updateSuspendBlockerLocked(); 1207 } 1208 1209 /** 1210 * Updates the value of mIsPowered. 1211 * Sets DIRTY_IS_POWERED if a change occurred. 1212 */ 1213 private void updateIsPoweredLocked(int dirty) { 1214 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1215 final boolean wasPowered = mIsPowered; 1216 final int oldPlugType = mPlugType; 1217 final boolean oldLevelLow = mBatteryLevelLow; 1218 mIsPowered = mBatteryManagerInternal.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1219 mPlugType = mBatteryManagerInternal.getPlugType(); 1220 mBatteryLevel = mBatteryManagerInternal.getBatteryLevel(); 1221 mBatteryLevelLow = mBatteryManagerInternal.getBatteryLevelLow(); 1222 1223 if (DEBUG_SPEW) { 1224 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1225 + ", mIsPowered=" + mIsPowered 1226 + ", oldPlugType=" + oldPlugType 1227 + ", mPlugType=" + mPlugType 1228 + ", mBatteryLevel=" + mBatteryLevel); 1229 } 1230 1231 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1232 mDirty |= DIRTY_IS_POWERED; 1233 1234 // Update wireless dock detection state. 1235 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1236 mIsPowered, mPlugType, mBatteryLevel); 1237 1238 // Treat plugging and unplugging the devices as a user activity. 1239 // Users find it disconcerting when they plug or unplug the device 1240 // and it shuts off right away. 1241 // Some devices also wake the device when plugged or unplugged because 1242 // they don't have a charging LED. 1243 final long now = SystemClock.uptimeMillis(); 1244 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1245 dockedOnWirelessCharger)) { 1246 wakeUpNoUpdateLocked(now); 1247 } 1248 userActivityNoUpdateLocked( 1249 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1250 1251 // Tell the notifier whether wireless charging has started so that 1252 // it can provide feedback to the user. 1253 if (dockedOnWirelessCharger) { 1254 mNotifier.onWirelessChargingStarted(); 1255 } 1256 } 1257 1258 if (wasPowered != mIsPowered || oldLevelLow != mBatteryLevelLow) { 1259 if (oldLevelLow != mBatteryLevelLow && !mBatteryLevelLow) { 1260 if (DEBUG_SPEW) { 1261 Slog.d(TAG, "updateIsPoweredLocked: resetting low power snooze"); 1262 } 1263 mAutoLowPowerModeSnoozing = false; 1264 } 1265 updateLowPowerModeLocked(); 1266 } 1267 } 1268 } 1269 1270 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1271 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1272 // Don't wake when powered unless configured to do so. 1273 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1274 return false; 1275 } 1276 1277 // Don't wake when undocked from wireless charger. 1278 // See WirelessChargerDetector for justification. 1279 if (wasPowered && !mIsPowered 1280 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1281 return false; 1282 } 1283 1284 // Don't wake when docked on wireless charger unless we are certain of it. 1285 // See WirelessChargerDetector for justification. 1286 if (!wasPowered && mIsPowered 1287 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1288 && !dockedOnWirelessCharger) { 1289 return false; 1290 } 1291 1292 // If already dreaming and becoming powered, then don't wake. 1293 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1294 return false; 1295 } 1296 1297 // Otherwise wake up! 1298 return true; 1299 } 1300 1301 /** 1302 * Updates the value of mStayOn. 1303 * Sets DIRTY_STAY_ON if a change occurred. 1304 */ 1305 private void updateStayOnLocked(int dirty) { 1306 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1307 final boolean wasStayOn = mStayOn; 1308 if (mStayOnWhilePluggedInSetting != 0 1309 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1310 mStayOn = mBatteryManagerInternal.isPowered(mStayOnWhilePluggedInSetting); 1311 } else { 1312 mStayOn = false; 1313 } 1314 1315 if (mStayOn != wasStayOn) { 1316 mDirty |= DIRTY_STAY_ON; 1317 } 1318 } 1319 } 1320 1321 /** 1322 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1323 * Note that most wake-locks are ignored when the system is asleep. 1324 * 1325 * This function must have no other side-effects. 1326 */ 1327 @SuppressWarnings("deprecation") 1328 private void updateWakeLockSummaryLocked(int dirty) { 1329 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1330 mWakeLockSummary = 0; 1331 1332 final int numWakeLocks = mWakeLocks.size(); 1333 for (int i = 0; i < numWakeLocks; i++) { 1334 final WakeLock wakeLock = mWakeLocks.get(i); 1335 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1336 case PowerManager.PARTIAL_WAKE_LOCK: 1337 mWakeLockSummary |= WAKE_LOCK_CPU; 1338 break; 1339 case PowerManager.FULL_WAKE_LOCK: 1340 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1341 break; 1342 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1343 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1344 break; 1345 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1346 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1347 break; 1348 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1349 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1350 break; 1351 case PowerManager.DOZE_WAKE_LOCK: 1352 mWakeLockSummary |= WAKE_LOCK_DOZE; 1353 break; 1354 } 1355 } 1356 1357 // Cancel wake locks that make no sense based on the current state. 1358 if (mWakefulness != WAKEFULNESS_DOZING) { 1359 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1360 } 1361 if (mWakefulness == WAKEFULNESS_ASLEEP 1362 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1363 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1364 | WAKE_LOCK_BUTTON_BRIGHT); 1365 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1366 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1367 } 1368 } 1369 1370 // Infer implied wake locks where necessary based on the current state. 1371 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1372 if (mWakefulness == WAKEFULNESS_AWAKE) { 1373 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1374 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1375 mWakeLockSummary |= WAKE_LOCK_CPU; 1376 } 1377 } 1378 1379 if (DEBUG_SPEW) { 1380 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1381 + wakefulnessToString(mWakefulness) 1382 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1383 } 1384 } 1385 } 1386 1387 /** 1388 * Updates the value of mUserActivitySummary to summarize the user requested 1389 * state of the system such as whether the screen should be bright or dim. 1390 * Note that user activity is ignored when the system is asleep. 1391 * 1392 * This function must have no other side-effects. 1393 */ 1394 private void updateUserActivitySummaryLocked(long now, int dirty) { 1395 // Update the status of the user activity timeout timer. 1396 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1397 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1398 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1399 1400 long nextTimeout = 0; 1401 if (mWakefulness == WAKEFULNESS_AWAKE 1402 || mWakefulness == WAKEFULNESS_DREAMING 1403 || mWakefulness == WAKEFULNESS_DOZING) { 1404 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1405 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1406 1407 mUserActivitySummary = 0; 1408 if (mLastUserActivityTime >= mLastWakeTime) { 1409 nextTimeout = mLastUserActivityTime 1410 + screenOffTimeout - screenDimDuration; 1411 if (now < nextTimeout) { 1412 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1413 } else { 1414 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1415 if (now < nextTimeout) { 1416 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1417 } 1418 } 1419 } 1420 if (mUserActivitySummary == 0 1421 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1422 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1423 if (now < nextTimeout) { 1424 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_BRIGHT) { 1425 mUserActivitySummary = USER_ACTIVITY_SCREEN_BRIGHT; 1426 } else if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DIM) { 1427 mUserActivitySummary = USER_ACTIVITY_SCREEN_DIM; 1428 } 1429 } 1430 } 1431 if (mUserActivitySummary != 0) { 1432 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1433 msg.setAsynchronous(true); 1434 mHandler.sendMessageAtTime(msg, nextTimeout); 1435 } 1436 } else { 1437 mUserActivitySummary = 0; 1438 } 1439 1440 if (DEBUG_SPEW) { 1441 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1442 + wakefulnessToString(mWakefulness) 1443 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1444 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1445 } 1446 } 1447 } 1448 1449 /** 1450 * Called when a user activity timeout has occurred. 1451 * Simply indicates that something about user activity has changed so that the new 1452 * state can be recomputed when the power state is updated. 1453 * 1454 * This function must have no other side-effects besides setting the dirty 1455 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1456 */ 1457 private void handleUserActivityTimeout() { // runs on handler thread 1458 synchronized (mLock) { 1459 if (DEBUG_SPEW) { 1460 Slog.d(TAG, "handleUserActivityTimeout"); 1461 } 1462 1463 mDirty |= DIRTY_USER_ACTIVITY; 1464 updatePowerStateLocked(); 1465 } 1466 } 1467 1468 private int getScreenOffTimeoutLocked() { 1469 int timeout = mScreenOffTimeoutSetting; 1470 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1471 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1472 } 1473 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1474 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1475 } 1476 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1477 } 1478 1479 private int getScreenDimDurationLocked(int screenOffTimeout) { 1480 return Math.min(mMaximumScreenDimDurationConfig, 1481 (int)(screenOffTimeout * mMaximumScreenDimRatioConfig)); 1482 } 1483 1484 /** 1485 * Updates the wakefulness of the device. 1486 * 1487 * This is the function that decides whether the device should start dreaming 1488 * based on the current wake locks and user activity state. It may modify mDirty 1489 * if the wakefulness changes. 1490 * 1491 * Returns true if the wakefulness changed and we need to restart power state calculation. 1492 */ 1493 private boolean updateWakefulnessLocked(int dirty) { 1494 boolean changed = false; 1495 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1496 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1497 | DIRTY_DOCK_STATE)) != 0) { 1498 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1499 if (DEBUG_SPEW) { 1500 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1501 } 1502 final long time = SystemClock.uptimeMillis(); 1503 if (shouldNapAtBedTimeLocked()) { 1504 changed = napNoUpdateLocked(time); 1505 } else { 1506 changed = goToSleepNoUpdateLocked(time, 1507 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0); 1508 } 1509 } 1510 } 1511 return changed; 1512 } 1513 1514 /** 1515 * Returns true if the device should automatically nap and start dreaming when the user 1516 * activity timeout has expired and it's bedtime. 1517 */ 1518 private boolean shouldNapAtBedTimeLocked() { 1519 return mDreamsActivateOnSleepSetting 1520 || (mDreamsActivateOnDockSetting 1521 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1522 } 1523 1524 /** 1525 * Returns true if the device should go to sleep now. 1526 * Also used when exiting a dream to determine whether we should go back 1527 * to being fully awake or else go to sleep for good. 1528 */ 1529 private boolean isItBedTimeYetLocked() { 1530 return mBootCompleted && !isBeingKeptAwakeLocked(); 1531 } 1532 1533 /** 1534 * Returns true if the device is being kept awake by a wake lock, user activity 1535 * or the stay on while powered setting. We also keep the phone awake when 1536 * the proximity sensor returns a positive result so that the device does not 1537 * lock while in a phone call. This function only controls whether the device 1538 * will go to sleep or dream which is independent of whether it will be allowed 1539 * to suspend. 1540 */ 1541 private boolean isBeingKeptAwakeLocked() { 1542 return mStayOn 1543 || mProximityPositive 1544 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1545 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1546 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1547 } 1548 1549 /** 1550 * Determines whether to post a message to the sandman to update the dream state. 1551 */ 1552 private void updateDreamLocked(int dirty) { 1553 if ((dirty & (DIRTY_WAKEFULNESS 1554 | DIRTY_USER_ACTIVITY 1555 | DIRTY_WAKE_LOCKS 1556 | DIRTY_BOOT_COMPLETED 1557 | DIRTY_SETTINGS 1558 | DIRTY_IS_POWERED 1559 | DIRTY_STAY_ON 1560 | DIRTY_PROXIMITY_POSITIVE 1561 | DIRTY_BATTERY_STATE)) != 0) { 1562 scheduleSandmanLocked(); 1563 } 1564 } 1565 1566 private void scheduleSandmanLocked() { 1567 if (!mSandmanScheduled) { 1568 mSandmanScheduled = true; 1569 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1570 msg.setAsynchronous(true); 1571 mHandler.sendMessage(msg); 1572 } 1573 } 1574 1575 /** 1576 * Called when the device enters or exits a dreaming or dozing state. 1577 * 1578 * We do this asynchronously because we must call out of the power manager to start 1579 * the dream and we don't want to hold our lock while doing so. There is a risk that 1580 * the device will wake or go to sleep in the meantime so we have to handle that case. 1581 */ 1582 private void handleSandman() { // runs on handler thread 1583 // Handle preconditions. 1584 final boolean startDreaming; 1585 final int wakefulness; 1586 synchronized (mLock) { 1587 mSandmanScheduled = false; 1588 wakefulness = mWakefulness; 1589 if (mSandmanSummoned) { 1590 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1591 || wakefulness == WAKEFULNESS_DOZING); 1592 mSandmanSummoned = false; 1593 } else { 1594 startDreaming = false; 1595 } 1596 } 1597 1598 // Start dreaming if needed. 1599 // We only control the dream on the handler thread, so we don't need to worry about 1600 // concurrent attempts to start or stop the dream. 1601 final boolean isDreaming; 1602 if (mDreamManager != null) { 1603 // Restart the dream whenever the sandman is summoned. 1604 if (startDreaming) { 1605 mDreamManager.stopDream(false /*immediate*/); 1606 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1607 } 1608 isDreaming = mDreamManager.isDreaming(); 1609 } else { 1610 isDreaming = false; 1611 } 1612 1613 // Update dream state. 1614 synchronized (mLock) { 1615 // Remember the initial battery level when the dream started. 1616 if (startDreaming && isDreaming) { 1617 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1618 if (wakefulness == WAKEFULNESS_DOZING) { 1619 Slog.i(TAG, "Dozing..."); 1620 } else { 1621 Slog.i(TAG, "Dreaming..."); 1622 } 1623 } 1624 1625 // If preconditions changed, wait for the next iteration to determine 1626 // whether the dream should continue (or be restarted). 1627 if (mSandmanSummoned || mWakefulness != wakefulness) { 1628 return; // wait for next cycle 1629 } 1630 1631 // Determine whether the dream should continue. 1632 if (wakefulness == WAKEFULNESS_DREAMING) { 1633 if (isDreaming && canDreamLocked()) { 1634 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1635 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1636 - mDreamsBatteryLevelDrainCutoffConfig 1637 && !isBeingKeptAwakeLocked()) { 1638 // If the user activity timeout expired and the battery appears 1639 // to be draining faster than it is charging then stop dreaming 1640 // and go to sleep. 1641 Slog.i(TAG, "Stopping dream because the battery appears to " 1642 + "be draining faster than it is charging. " 1643 + "Battery level when dream started: " 1644 + mBatteryLevelWhenDreamStarted + "%. " 1645 + "Battery level now: " + mBatteryLevel + "%."); 1646 } else { 1647 return; // continue dreaming 1648 } 1649 } 1650 1651 // Dream has ended or will be stopped. Update the power state. 1652 if (isItBedTimeYetLocked()) { 1653 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1654 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0); 1655 updatePowerStateLocked(); 1656 } else { 1657 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1658 updatePowerStateLocked(); 1659 } 1660 } else if (wakefulness == WAKEFULNESS_DOZING) { 1661 if (isDreaming) { 1662 return; // continue dozing 1663 } 1664 1665 // Doze has ended or will be stopped. Update the power state. 1666 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1667 updatePowerStateLocked(); 1668 } 1669 } 1670 1671 // Stop dream. 1672 if (isDreaming) { 1673 mDreamManager.stopDream(false /*immediate*/); 1674 } 1675 } 1676 1677 /** 1678 * Returns true if the device is allowed to dream in its current state. 1679 * This function is not called when dozing. 1680 */ 1681 private boolean canDreamLocked() { 1682 if (mWakefulness != WAKEFULNESS_DREAMING 1683 || !mDreamsSupportedConfig 1684 || !mDreamsEnabledSetting 1685 || !mDisplayPowerRequest.isBrightOrDim() 1686 || !mBootCompleted) { 1687 return false; 1688 } 1689 if (!isBeingKeptAwakeLocked()) { 1690 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1691 return false; 1692 } 1693 if (!mIsPowered 1694 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1695 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1696 return false; 1697 } 1698 if (mIsPowered 1699 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1700 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1701 return false; 1702 } 1703 } 1704 return true; 1705 } 1706 1707 private void handleScreenOnBlockerReleased() { 1708 synchronized (mLock) { 1709 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1710 updatePowerStateLocked(); 1711 } 1712 } 1713 1714 /** 1715 * Updates the display power state asynchronously. 1716 * When the update is finished, mDisplayReady will be set to true. The display 1717 * controller posts a message to tell us when the actual display power state 1718 * has been updated so we come back here to double-check and finish up. 1719 * 1720 * This function recalculates the display power state each time. 1721 */ 1722 private void updateDisplayPowerStateLocked(int dirty) { 1723 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1724 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1725 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1726 mDisplayPowerRequest.policy = getDesiredScreenPolicyLocked(); 1727 1728 int screenBrightness = mScreenBrightnessSettingDefault; 1729 float screenAutoBrightnessAdjustment = 0.0f; 1730 boolean autoBrightness = (mScreenBrightnessModeSetting == 1731 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1732 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1733 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1734 autoBrightness = false; 1735 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1736 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1737 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1738 screenBrightness = mScreenBrightnessSetting; 1739 } 1740 if (autoBrightness) { 1741 screenBrightness = mScreenBrightnessSettingDefault; 1742 if (isValidAutoBrightnessAdjustment( 1743 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1744 screenAutoBrightnessAdjustment = 1745 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1746 } else if (isValidAutoBrightnessAdjustment( 1747 mScreenAutoBrightnessAdjustmentSetting)) { 1748 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1749 } 1750 } 1751 screenBrightness = Math.max(Math.min(screenBrightness, 1752 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1753 screenAutoBrightnessAdjustment = Math.max(Math.min( 1754 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1755 mDisplayPowerRequest.screenBrightness = screenBrightness; 1756 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1757 screenAutoBrightnessAdjustment; 1758 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1759 1760 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1761 1762 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1763 1764 mDisplayPowerRequest.lowPowerMode = mLowPowerModeEnabled; 1765 1766 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DOZE) { 1767 mDisplayPowerRequest.dozeScreenState = mDozeScreenStateOverrideFromDreamManager; 1768 mDisplayPowerRequest.dozeScreenBrightness = 1769 mDozeScreenBrightnessOverrideFromDreamManager; 1770 } else { 1771 mDisplayPowerRequest.dozeScreenState = Display.STATE_UNKNOWN; 1772 mDisplayPowerRequest.dozeScreenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 1773 } 1774 1775 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1776 mRequestWaitForNegativeProximity); 1777 mRequestWaitForNegativeProximity = false; 1778 1779 if (DEBUG_SPEW) { 1780 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1781 + ", policy=" + mDisplayPowerRequest.policy 1782 + ", mWakefulness=" + mWakefulness 1783 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1784 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1785 + ", mBootCompleted=" + mBootCompleted); 1786 } 1787 } 1788 } 1789 1790 private static boolean isValidBrightness(int value) { 1791 return value >= 0 && value <= 255; 1792 } 1793 1794 private static boolean isValidAutoBrightnessAdjustment(float value) { 1795 // Handles NaN by always returning false. 1796 return value >= -1.0f && value <= 1.0f; 1797 } 1798 1799 private int getDesiredScreenPolicyLocked() { 1800 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1801 return DisplayPowerRequest.POLICY_OFF; 1802 } 1803 1804 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1805 return DisplayPowerRequest.POLICY_DOZE; 1806 } 1807 1808 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1809 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1810 || !mBootCompleted) { 1811 return DisplayPowerRequest.POLICY_BRIGHT; 1812 } 1813 1814 return DisplayPowerRequest.POLICY_DIM; 1815 } 1816 1817 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1818 new DisplayManagerInternal.DisplayPowerCallbacks() { 1819 private int mDisplayState = Display.STATE_UNKNOWN; 1820 1821 @Override 1822 public void onStateChanged() { 1823 synchronized (mLock) { 1824 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1825 updatePowerStateLocked(); 1826 } 1827 } 1828 1829 @Override 1830 public void onProximityPositive() { 1831 synchronized (mLock) { 1832 mProximityPositive = true; 1833 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1834 updatePowerStateLocked(); 1835 } 1836 } 1837 1838 @Override 1839 public void onProximityNegative() { 1840 synchronized (mLock) { 1841 mProximityPositive = false; 1842 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1843 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1844 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1845 updatePowerStateLocked(); 1846 } 1847 } 1848 1849 @Override 1850 public void onDisplayStateChange(int state) { 1851 // This method is only needed to support legacy display blanking behavior 1852 // where the display's power state is coupled to suspend or to the power HAL. 1853 // The order of operations matters here. 1854 synchronized (mLock) { 1855 if (mDisplayState != state) { 1856 mDisplayState = state; 1857 if (state == Display.STATE_OFF) { 1858 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1859 setHalInteractiveModeLocked(false); 1860 } 1861 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1862 setHalAutoSuspendModeLocked(true); 1863 } 1864 } else { 1865 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1866 setHalAutoSuspendModeLocked(false); 1867 } 1868 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1869 setHalInteractiveModeLocked(true); 1870 } 1871 } 1872 } 1873 } 1874 } 1875 1876 @Override 1877 public void acquireSuspendBlocker() { 1878 mDisplaySuspendBlocker.acquire(); 1879 } 1880 1881 @Override 1882 public void releaseSuspendBlocker() { 1883 mDisplaySuspendBlocker.release(); 1884 } 1885 1886 @Override 1887 public String toString() { 1888 synchronized (this) { 1889 return "state=" + Display.stateToString(mDisplayState); 1890 } 1891 } 1892 }; 1893 1894 private boolean shouldUseProximitySensorLocked() { 1895 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1896 } 1897 1898 /** 1899 * Updates the suspend blocker that keeps the CPU alive. 1900 * 1901 * This function must have no other side-effects. 1902 */ 1903 private void updateSuspendBlockerLocked() { 1904 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1905 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1906 final boolean autoSuspend = !needDisplaySuspendBlocker; 1907 1908 // Disable auto-suspend if needed. 1909 if (!autoSuspend) { 1910 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1911 setHalAutoSuspendModeLocked(false); 1912 } 1913 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1914 setHalInteractiveModeLocked(true); 1915 } 1916 } 1917 1918 // First acquire suspend blockers if needed. 1919 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1920 mWakeLockSuspendBlocker.acquire(); 1921 mHoldingWakeLockSuspendBlocker = true; 1922 } 1923 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1924 mDisplaySuspendBlocker.acquire(); 1925 mHoldingDisplaySuspendBlocker = true; 1926 } 1927 1928 // Then release suspend blockers if needed. 1929 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1930 mWakeLockSuspendBlocker.release(); 1931 mHoldingWakeLockSuspendBlocker = false; 1932 } 1933 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1934 mDisplaySuspendBlocker.release(); 1935 mHoldingDisplaySuspendBlocker = false; 1936 } 1937 1938 // Enable auto-suspend if needed. 1939 if (autoSuspend) { 1940 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1941 setHalInteractiveModeLocked(false); 1942 } 1943 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1944 setHalAutoSuspendModeLocked(true); 1945 } 1946 } 1947 } 1948 1949 /** 1950 * Return true if we must keep a suspend blocker active on behalf of the display. 1951 * We do so if the screen is on or is in transition between states. 1952 */ 1953 private boolean needDisplaySuspendBlockerLocked() { 1954 if (!mDisplayReady) { 1955 return true; 1956 } 1957 if (mDisplayPowerRequest.isBrightOrDim()) { 1958 // If we asked for the screen to be on but it is off due to the proximity 1959 // sensor then we may suspend but only if the configuration allows it. 1960 // On some hardware it may not be safe to suspend because the proximity 1961 // sensor may not be correctly configured as a wake-up source. 1962 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1963 || !mSuspendWhenScreenOffDueToProximityConfig) { 1964 return true; 1965 } 1966 } 1967 // Let the system suspend if the screen is off or dozing. 1968 return false; 1969 } 1970 1971 private void setHalAutoSuspendModeLocked(boolean enable) { 1972 if (enable != mHalAutoSuspendModeEnabled) { 1973 if (DEBUG) { 1974 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 1975 } 1976 mHalAutoSuspendModeEnabled = enable; 1977 nativeSetAutoSuspend(enable); 1978 } 1979 } 1980 1981 private void setHalInteractiveModeLocked(boolean enable) { 1982 if (enable != mHalInteractiveModeEnabled) { 1983 if (DEBUG) { 1984 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 1985 } 1986 mHalInteractiveModeEnabled = enable; 1987 nativeSetInteractive(enable); 1988 } 1989 } 1990 1991 private boolean isInteractiveInternal() { 1992 synchronized (mLock) { 1993 return mInteractive; 1994 } 1995 } 1996 1997 private boolean isLowPowerModeInternal() { 1998 synchronized (mLock) { 1999 return mLowPowerModeEnabled; 2000 } 2001 } 2002 2003 private void handleBatteryStateChangedLocked() { 2004 mDirty |= DIRTY_BATTERY_STATE; 2005 updatePowerStateLocked(); 2006 } 2007 2008 private void startWatchingForBootAnimationFinished() { 2009 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 2010 } 2011 2012 private void checkIfBootAnimationFinished() { 2013 if (DEBUG) { 2014 Slog.d(TAG, "Check if boot animation finished..."); 2015 } 2016 2017 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 2018 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 2019 BOOT_ANIMATION_POLL_INTERVAL); 2020 return; 2021 } 2022 2023 synchronized (mLock) { 2024 if (!mBootCompleted) { 2025 Slog.i(TAG, "Boot animation finished."); 2026 handleBootCompletedLocked(); 2027 } 2028 } 2029 } 2030 2031 private void handleBootCompletedLocked() { 2032 final long now = SystemClock.uptimeMillis(); 2033 mBootCompleted = true; 2034 mDirty |= DIRTY_BOOT_COMPLETED; 2035 userActivityNoUpdateLocked( 2036 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 2037 updatePowerStateLocked(); 2038 } 2039 2040 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 2041 final String reason, boolean wait) { 2042 if (mHandler == null || !mSystemReady) { 2043 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 2044 } 2045 2046 Runnable runnable = new Runnable() { 2047 @Override 2048 public void run() { 2049 synchronized (this) { 2050 if (shutdown) { 2051 ShutdownThread.shutdown(mContext, confirm); 2052 } else { 2053 ShutdownThread.reboot(mContext, reason, confirm); 2054 } 2055 } 2056 } 2057 }; 2058 2059 // ShutdownThread must run on a looper capable of displaying the UI. 2060 Message msg = Message.obtain(mHandler, runnable); 2061 msg.setAsynchronous(true); 2062 mHandler.sendMessage(msg); 2063 2064 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 2065 if (wait) { 2066 synchronized (runnable) { 2067 while (true) { 2068 try { 2069 runnable.wait(); 2070 } catch (InterruptedException e) { 2071 } 2072 } 2073 } 2074 } 2075 } 2076 2077 private void crashInternal(final String message) { 2078 Thread t = new Thread("PowerManagerService.crash()") { 2079 @Override 2080 public void run() { 2081 throw new RuntimeException(message); 2082 } 2083 }; 2084 try { 2085 t.start(); 2086 t.join(); 2087 } catch (InterruptedException e) { 2088 Log.wtf(TAG, e); 2089 } 2090 } 2091 2092 private void setStayOnSettingInternal(int val) { 2093 Settings.Global.putInt(mContext.getContentResolver(), 2094 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 2095 } 2096 2097 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 2098 synchronized (mLock) { 2099 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 2100 mDirty |= DIRTY_SETTINGS; 2101 updatePowerStateLocked(); 2102 } 2103 } 2104 2105 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 2106 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 2107 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 2108 } 2109 2110 private void setAttentionLightInternal(boolean on, int color) { 2111 Light light; 2112 synchronized (mLock) { 2113 if (!mSystemReady) { 2114 return; 2115 } 2116 light = mAttentionLight; 2117 } 2118 2119 // Control light outside of lock. 2120 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 2121 } 2122 2123 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 2124 synchronized (mLock) { 2125 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 2126 mScreenBrightnessOverrideFromWindowManager = brightness; 2127 mDirty |= DIRTY_SETTINGS; 2128 updatePowerStateLocked(); 2129 } 2130 } 2131 } 2132 2133 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 2134 synchronized (mLock) { 2135 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 2136 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 2137 mDirty |= DIRTY_SETTINGS; 2138 updatePowerStateLocked(); 2139 } 2140 } 2141 } 2142 2143 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2144 synchronized (mLock) { 2145 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2146 mTemporaryScreenBrightnessSettingOverride = brightness; 2147 mDirty |= DIRTY_SETTINGS; 2148 updatePowerStateLocked(); 2149 } 2150 } 2151 } 2152 2153 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2154 synchronized (mLock) { 2155 // Note: This condition handles NaN because NaN is not equal to any other 2156 // value, including itself. 2157 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2158 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2159 mDirty |= DIRTY_SETTINGS; 2160 updatePowerStateLocked(); 2161 } 2162 } 2163 } 2164 2165 private void setDozeOverrideFromDreamManagerInternal( 2166 int screenState, int screenBrightness) { 2167 synchronized (mLock) { 2168 if (mDozeScreenStateOverrideFromDreamManager != screenState 2169 || mDozeScreenBrightnessOverrideFromDreamManager != screenBrightness) { 2170 mDozeScreenStateOverrideFromDreamManager = screenState; 2171 mDozeScreenBrightnessOverrideFromDreamManager = screenBrightness; 2172 mDirty |= DIRTY_SETTINGS; 2173 updatePowerStateLocked(); 2174 } 2175 } 2176 } 2177 2178 private void powerHintInternal(int hintId, int data) { 2179 nativeSendPowerHint(hintId, data); 2180 } 2181 2182 private static void setSurfaceFlingerLowPowerMode(int enabled) { 2183 try { 2184 final IBinder flinger = ServiceManager.getService("SurfaceFlinger"); 2185 if (flinger != null) { 2186 final Parcel data = Parcel.obtain(); 2187 data.writeInterfaceToken("android.ui.ISurfaceComposer"); 2188 data.writeInt(enabled); 2189 flinger.transact(1016, data, null, 0); 2190 data.recycle(); 2191 } 2192 } catch (RemoteException ex) { 2193 Slog.e(TAG, "Failed to reduce refresh rate", ex); 2194 } 2195 } 2196 2197 /** 2198 * Low-level function turn the device off immediately, without trying 2199 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2200 */ 2201 public static void lowLevelShutdown() { 2202 SystemProperties.set("sys.powerctl", "shutdown"); 2203 } 2204 2205 /** 2206 * Low-level function to reboot the device. On success, this 2207 * function doesn't return. If more than 20 seconds passes from 2208 * the time a reboot is requested (120 seconds for reboot to 2209 * recovery), this method returns. 2210 * 2211 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2212 */ 2213 public static void lowLevelReboot(String reason) { 2214 if (reason == null) { 2215 reason = ""; 2216 } 2217 long duration; 2218 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2219 // If we are rebooting to go into recovery, instead of 2220 // setting sys.powerctl directly we'll start the 2221 // pre-recovery service which will do some preparation for 2222 // recovery and then reboot for us. 2223 // 2224 // This preparation can take more than 20 seconds if 2225 // there's a very large update package, so lengthen the 2226 // timeout. 2227 SystemProperties.set("ctl.start", "pre-recovery"); 2228 duration = 120 * 1000L; 2229 } else { 2230 SystemProperties.set("sys.powerctl", "reboot," + reason); 2231 duration = 20 * 1000L; 2232 } 2233 try { 2234 Thread.sleep(duration); 2235 } catch (InterruptedException e) { 2236 Thread.currentThread().interrupt(); 2237 } 2238 } 2239 2240 @Override // Watchdog.Monitor implementation 2241 public void monitor() { 2242 // Grab and release lock for watchdog monitor to detect deadlocks. 2243 synchronized (mLock) { 2244 } 2245 } 2246 2247 private void dumpInternal(PrintWriter pw) { 2248 pw.println("POWER MANAGER (dumpsys power)\n"); 2249 2250 final WirelessChargerDetector wcd; 2251 synchronized (mLock) { 2252 pw.println("Power Manager State:"); 2253 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2254 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2255 pw.println(" mInteractive=" + mInteractive); 2256 pw.println(" mIsPowered=" + mIsPowered); 2257 pw.println(" mPlugType=" + mPlugType); 2258 pw.println(" mBatteryLevel=" + mBatteryLevel); 2259 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2260 pw.println(" mDockState=" + mDockState); 2261 pw.println(" mStayOn=" + mStayOn); 2262 pw.println(" mProximityPositive=" + mProximityPositive); 2263 pw.println(" mBootCompleted=" + mBootCompleted); 2264 pw.println(" mSystemReady=" + mSystemReady); 2265 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2266 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2267 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2268 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2269 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2270 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2271 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2272 pw.println(" mLowPowerModeEnabled=" + mLowPowerModeEnabled); 2273 pw.println(" mBatteryLevelLow=" + mBatteryLevelLow); 2274 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2275 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2276 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2277 pw.println(" mLastUserActivityTimeNoChangeLights=" 2278 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2279 pw.println(" mDisplayReady=" + mDisplayReady); 2280 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2281 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2282 2283 pw.println(); 2284 pw.println("Settings and Configuration:"); 2285 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2286 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2287 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2288 + mDecoupleHalInteractiveModeFromDisplayConfig); 2289 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2290 + mWakeUpWhenPluggedOrUnpluggedConfig); 2291 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2292 + mSuspendWhenScreenOffDueToProximityConfig); 2293 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2294 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2295 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2296 + mDreamsActivatedOnSleepByDefaultConfig); 2297 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2298 + mDreamsActivatedOnDockByDefaultConfig); 2299 pw.println(" mDreamsEnabledOnBatteryConfig=" 2300 + mDreamsEnabledOnBatteryConfig); 2301 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2302 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2303 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2304 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2305 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2306 + mDreamsBatteryLevelDrainCutoffConfig); 2307 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2308 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2309 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2310 pw.println(" mLowPowerModeSetting=" + mLowPowerModeSetting); 2311 pw.println(" mAutoLowPowerModeEnabled=" + mAutoLowPowerModeEnabled); 2312 pw.println(" mAutoLowPowerModeSnoozing=" + mAutoLowPowerModeSnoozing); 2313 pw.println(" mMinimumScreenOffTimeoutConfig=" + mMinimumScreenOffTimeoutConfig); 2314 pw.println(" mMaximumScreenDimDurationConfig=" + mMaximumScreenDimDurationConfig); 2315 pw.println(" mMaximumScreenDimRatioConfig=" + mMaximumScreenDimRatioConfig); 2316 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2317 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2318 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2319 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2320 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2321 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2322 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2323 + mScreenAutoBrightnessAdjustmentSetting); 2324 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2325 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2326 + mScreenBrightnessOverrideFromWindowManager); 2327 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2328 + mUserActivityTimeoutOverrideFromWindowManager); 2329 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2330 + mTemporaryScreenBrightnessSettingOverride); 2331 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2332 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2333 pw.println(" mDozeScreenStateOverrideFromDreamManager=" 2334 + mDozeScreenStateOverrideFromDreamManager); 2335 pw.println(" mDozeScreenBrightnessOverrideFromDreamManager=" 2336 + mDozeScreenBrightnessOverrideFromDreamManager); 2337 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2338 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2339 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2340 2341 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2342 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2343 pw.println(); 2344 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2345 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2346 2347 pw.println(); 2348 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2349 for (WakeLock wl : mWakeLocks) { 2350 pw.println(" " + wl); 2351 } 2352 2353 pw.println(); 2354 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2355 for (SuspendBlocker sb : mSuspendBlockers) { 2356 pw.println(" " + sb); 2357 } 2358 2359 pw.println(); 2360 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2361 2362 pw.println(); 2363 pw.println("Display Power: " + mDisplayPowerCallbacks); 2364 2365 wcd = mWirelessChargerDetector; 2366 } 2367 2368 if (wcd != null) { 2369 wcd.dump(pw); 2370 } 2371 } 2372 2373 private SuspendBlocker createSuspendBlockerLocked(String name) { 2374 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2375 mSuspendBlockers.add(suspendBlocker); 2376 return suspendBlocker; 2377 } 2378 2379 private static String wakefulnessToString(int wakefulness) { 2380 switch (wakefulness) { 2381 case WAKEFULNESS_ASLEEP: 2382 return "Asleep"; 2383 case WAKEFULNESS_AWAKE: 2384 return "Awake"; 2385 case WAKEFULNESS_DREAMING: 2386 return "Dreaming"; 2387 case WAKEFULNESS_DOZING: 2388 return "Dozing"; 2389 default: 2390 return Integer.toString(wakefulness); 2391 } 2392 } 2393 2394 private static WorkSource copyWorkSource(WorkSource workSource) { 2395 return workSource != null ? new WorkSource(workSource) : null; 2396 } 2397 2398 private final class BatteryReceiver extends BroadcastReceiver { 2399 @Override 2400 public void onReceive(Context context, Intent intent) { 2401 synchronized (mLock) { 2402 handleBatteryStateChangedLocked(); 2403 } 2404 } 2405 } 2406 2407 private final class BootCompletedReceiver extends BroadcastReceiver { 2408 @Override 2409 public void onReceive(Context context, Intent intent) { 2410 // This is our early signal that the system thinks it has finished booting. 2411 // However, the boot animation may still be running for a few more seconds 2412 // since it is ultimately in charge of when it terminates. 2413 // Defer transitioning into the boot completed state until the animation exits. 2414 // We do this so that the screen does not start to dim prematurely before 2415 // the user has actually had a chance to interact with the device. 2416 startWatchingForBootAnimationFinished(); 2417 } 2418 } 2419 2420 private final class DreamReceiver extends BroadcastReceiver { 2421 @Override 2422 public void onReceive(Context context, Intent intent) { 2423 synchronized (mLock) { 2424 scheduleSandmanLocked(); 2425 } 2426 } 2427 } 2428 2429 private final class UserSwitchedReceiver extends BroadcastReceiver { 2430 @Override 2431 public void onReceive(Context context, Intent intent) { 2432 synchronized (mLock) { 2433 handleSettingsChangedLocked(); 2434 } 2435 } 2436 } 2437 2438 private final class DockReceiver extends BroadcastReceiver { 2439 @Override 2440 public void onReceive(Context context, Intent intent) { 2441 synchronized (mLock) { 2442 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2443 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2444 if (mDockState != dockState) { 2445 mDockState = dockState; 2446 mDirty |= DIRTY_DOCK_STATE; 2447 updatePowerStateLocked(); 2448 } 2449 } 2450 } 2451 } 2452 2453 private final class SettingsObserver extends ContentObserver { 2454 public SettingsObserver(Handler handler) { 2455 super(handler); 2456 } 2457 2458 @Override 2459 public void onChange(boolean selfChange, Uri uri) { 2460 synchronized (mLock) { 2461 handleSettingsChangedLocked(); 2462 } 2463 } 2464 } 2465 2466 /** 2467 * Handler for asynchronous operations performed by the power manager. 2468 */ 2469 private final class PowerManagerHandler extends Handler { 2470 public PowerManagerHandler(Looper looper) { 2471 super(looper, null, true /*async*/); 2472 } 2473 2474 @Override 2475 public void handleMessage(Message msg) { 2476 switch (msg.what) { 2477 case MSG_USER_ACTIVITY_TIMEOUT: 2478 handleUserActivityTimeout(); 2479 break; 2480 case MSG_SANDMAN: 2481 handleSandman(); 2482 break; 2483 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2484 handleScreenOnBlockerReleased(); 2485 break; 2486 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2487 checkIfBootAnimationFinished(); 2488 break; 2489 } 2490 } 2491 } 2492 2493 /** 2494 * Represents a wake lock that has been acquired by an application. 2495 */ 2496 private final class WakeLock implements IBinder.DeathRecipient { 2497 public final IBinder mLock; 2498 public int mFlags; 2499 public String mTag; 2500 public final String mPackageName; 2501 public WorkSource mWorkSource; 2502 public String mHistoryTag; 2503 public final int mOwnerUid; 2504 public final int mOwnerPid; 2505 public boolean mNotifiedAcquired; 2506 2507 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2508 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2509 mLock = lock; 2510 mFlags = flags; 2511 mTag = tag; 2512 mPackageName = packageName; 2513 mWorkSource = copyWorkSource(workSource); 2514 mHistoryTag = historyTag; 2515 mOwnerUid = ownerUid; 2516 mOwnerPid = ownerPid; 2517 } 2518 2519 @Override 2520 public void binderDied() { 2521 PowerManagerService.this.handleWakeLockDeath(this); 2522 } 2523 2524 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2525 int ownerUid, int ownerPid) { 2526 return mFlags == flags 2527 && mTag.equals(tag) 2528 && hasSameWorkSource(workSource) 2529 && mOwnerUid == ownerUid 2530 && mOwnerPid == ownerPid; 2531 } 2532 2533 public void updateProperties(int flags, String tag, String packageName, 2534 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2535 if (!mPackageName.equals(packageName)) { 2536 throw new IllegalStateException("Existing wake lock package name changed: " 2537 + mPackageName + " to " + packageName); 2538 } 2539 if (mOwnerUid != ownerUid) { 2540 throw new IllegalStateException("Existing wake lock uid changed: " 2541 + mOwnerUid + " to " + ownerUid); 2542 } 2543 if (mOwnerPid != ownerPid) { 2544 throw new IllegalStateException("Existing wake lock pid changed: " 2545 + mOwnerPid + " to " + ownerPid); 2546 } 2547 mFlags = flags; 2548 mTag = tag; 2549 updateWorkSource(workSource); 2550 mHistoryTag = historyTag; 2551 } 2552 2553 public boolean hasSameWorkSource(WorkSource workSource) { 2554 return Objects.equal(mWorkSource, workSource); 2555 } 2556 2557 public void updateWorkSource(WorkSource workSource) { 2558 mWorkSource = copyWorkSource(workSource); 2559 } 2560 2561 @Override 2562 public String toString() { 2563 return getLockLevelString() 2564 + " '" + mTag + "'" + getLockFlagsString() 2565 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2566 } 2567 2568 @SuppressWarnings("deprecation") 2569 private String getLockLevelString() { 2570 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2571 case PowerManager.FULL_WAKE_LOCK: 2572 return "FULL_WAKE_LOCK "; 2573 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2574 return "SCREEN_BRIGHT_WAKE_LOCK "; 2575 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2576 return "SCREEN_DIM_WAKE_LOCK "; 2577 case PowerManager.PARTIAL_WAKE_LOCK: 2578 return "PARTIAL_WAKE_LOCK "; 2579 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2580 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2581 case PowerManager.DOZE_WAKE_LOCK: 2582 return "DOZE_WAKE_LOCK "; 2583 default: 2584 return "??? "; 2585 } 2586 } 2587 2588 private String getLockFlagsString() { 2589 String result = ""; 2590 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2591 result += " ACQUIRE_CAUSES_WAKEUP"; 2592 } 2593 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2594 result += " ON_AFTER_RELEASE"; 2595 } 2596 return result; 2597 } 2598 } 2599 2600 private final class SuspendBlockerImpl implements SuspendBlocker { 2601 private final String mName; 2602 private int mReferenceCount; 2603 2604 public SuspendBlockerImpl(String name) { 2605 mName = name; 2606 } 2607 2608 @Override 2609 protected void finalize() throws Throwable { 2610 try { 2611 if (mReferenceCount != 0) { 2612 Log.wtf(TAG, "Suspend blocker \"" + mName 2613 + "\" was finalized without being released!"); 2614 mReferenceCount = 0; 2615 nativeReleaseSuspendBlocker(mName); 2616 } 2617 } finally { 2618 super.finalize(); 2619 } 2620 } 2621 2622 @Override 2623 public void acquire() { 2624 synchronized (this) { 2625 mReferenceCount += 1; 2626 if (mReferenceCount == 1) { 2627 if (DEBUG_SPEW) { 2628 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2629 } 2630 nativeAcquireSuspendBlocker(mName); 2631 } 2632 } 2633 } 2634 2635 @Override 2636 public void release() { 2637 synchronized (this) { 2638 mReferenceCount -= 1; 2639 if (mReferenceCount == 0) { 2640 if (DEBUG_SPEW) { 2641 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2642 } 2643 nativeReleaseSuspendBlocker(mName); 2644 } else if (mReferenceCount < 0) { 2645 Log.wtf(TAG, "Suspend blocker \"" + mName 2646 + "\" was released without being acquired!", new Throwable()); 2647 mReferenceCount = 0; 2648 } 2649 } 2650 } 2651 2652 @Override 2653 public String toString() { 2654 synchronized (this) { 2655 return mName + ": ref count=" + mReferenceCount; 2656 } 2657 } 2658 } 2659 2660 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2661 private int mNestCount; 2662 2663 public boolean isHeld() { 2664 synchronized (this) { 2665 return mNestCount != 0; 2666 } 2667 } 2668 2669 @Override 2670 public void acquire() { 2671 synchronized (this) { 2672 mNestCount += 1; 2673 if (DEBUG) { 2674 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2675 } 2676 } 2677 } 2678 2679 @Override 2680 public void release() { 2681 synchronized (this) { 2682 mNestCount -= 1; 2683 if (mNestCount < 0) { 2684 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2685 new Throwable()); 2686 mNestCount = 0; 2687 } 2688 if (mNestCount == 0) { 2689 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2690 } 2691 if (DEBUG) { 2692 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2693 } 2694 } 2695 } 2696 2697 @Override 2698 public String toString() { 2699 synchronized (this) { 2700 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2701 } 2702 } 2703 } 2704 2705 private final class BinderService extends IPowerManager.Stub { 2706 @Override // Binder call 2707 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2708 String packageName, int uid) { 2709 if (uid < 0) { 2710 uid = Binder.getCallingUid(); 2711 } 2712 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2713 } 2714 2715 @Override // Binder call 2716 public void powerHint(int hintId, int data) { 2717 if (!mSystemReady) { 2718 // Service not ready yet, so who the heck cares about power hints, bah. 2719 return; 2720 } 2721 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2722 powerHintInternal(hintId, data); 2723 } 2724 2725 @Override // Binder call 2726 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2727 WorkSource ws, String historyTag) { 2728 if (lock == null) { 2729 throw new IllegalArgumentException("lock must not be null"); 2730 } 2731 if (packageName == null) { 2732 throw new IllegalArgumentException("packageName must not be null"); 2733 } 2734 PowerManager.validateWakeLockParameters(flags, tag); 2735 2736 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2737 if (ws != null && ws.size() != 0) { 2738 mContext.enforceCallingOrSelfPermission( 2739 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2740 } else { 2741 ws = null; 2742 } 2743 2744 final int uid = Binder.getCallingUid(); 2745 final int pid = Binder.getCallingPid(); 2746 final long ident = Binder.clearCallingIdentity(); 2747 try { 2748 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2749 } finally { 2750 Binder.restoreCallingIdentity(ident); 2751 } 2752 } 2753 2754 @Override // Binder call 2755 public void releaseWakeLock(IBinder lock, int flags) { 2756 if (lock == null) { 2757 throw new IllegalArgumentException("lock must not be null"); 2758 } 2759 2760 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2761 2762 final long ident = Binder.clearCallingIdentity(); 2763 try { 2764 releaseWakeLockInternal(lock, flags); 2765 } finally { 2766 Binder.restoreCallingIdentity(ident); 2767 } 2768 } 2769 2770 @Override // Binder call 2771 public void updateWakeLockUids(IBinder lock, int[] uids) { 2772 WorkSource ws = null; 2773 2774 if (uids != null) { 2775 ws = new WorkSource(); 2776 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2777 // one at a time? 2778 for (int i = 0; i < uids.length; i++) { 2779 ws.add(uids[i]); 2780 } 2781 } 2782 updateWakeLockWorkSource(lock, ws, null); 2783 } 2784 2785 @Override // Binder call 2786 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2787 if (lock == null) { 2788 throw new IllegalArgumentException("lock must not be null"); 2789 } 2790 2791 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2792 if (ws != null && ws.size() != 0) { 2793 mContext.enforceCallingOrSelfPermission( 2794 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2795 } else { 2796 ws = null; 2797 } 2798 2799 final long ident = Binder.clearCallingIdentity(); 2800 try { 2801 updateWakeLockWorkSourceInternal(lock, ws, historyTag); 2802 } finally { 2803 Binder.restoreCallingIdentity(ident); 2804 } 2805 } 2806 2807 @Override // Binder call 2808 public boolean isWakeLockLevelSupported(int level) { 2809 final long ident = Binder.clearCallingIdentity(); 2810 try { 2811 return isWakeLockLevelSupportedInternal(level); 2812 } finally { 2813 Binder.restoreCallingIdentity(ident); 2814 } 2815 } 2816 2817 @Override // Binder call 2818 public void userActivity(long eventTime, int event, int flags) { 2819 final long now = SystemClock.uptimeMillis(); 2820 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2821 != PackageManager.PERMISSION_GRANTED) { 2822 // Once upon a time applications could call userActivity(). 2823 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2824 // request instead of throwing a SecurityException so we don't break old apps. 2825 synchronized (mLock) { 2826 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2827 mLastWarningAboutUserActivityPermission = now; 2828 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2829 + "caller does not have DEVICE_POWER permission. " 2830 + "Please fix your app! " 2831 + " pid=" + Binder.getCallingPid() 2832 + " uid=" + Binder.getCallingUid()); 2833 } 2834 } 2835 return; 2836 } 2837 2838 if (eventTime > SystemClock.uptimeMillis()) { 2839 throw new IllegalArgumentException("event time must not be in the future"); 2840 } 2841 2842 final int uid = Binder.getCallingUid(); 2843 final long ident = Binder.clearCallingIdentity(); 2844 try { 2845 userActivityInternal(eventTime, event, flags, uid); 2846 } finally { 2847 Binder.restoreCallingIdentity(ident); 2848 } 2849 } 2850 2851 @Override // Binder call 2852 public void wakeUp(long eventTime) { 2853 if (eventTime > SystemClock.uptimeMillis()) { 2854 throw new IllegalArgumentException("event time must not be in the future"); 2855 } 2856 2857 mContext.enforceCallingOrSelfPermission( 2858 android.Manifest.permission.DEVICE_POWER, null); 2859 2860 final long ident = Binder.clearCallingIdentity(); 2861 try { 2862 wakeUpInternal(eventTime); 2863 } finally { 2864 Binder.restoreCallingIdentity(ident); 2865 } 2866 } 2867 2868 @Override // Binder call 2869 public void goToSleep(long eventTime, int reason, int flags) { 2870 if (eventTime > SystemClock.uptimeMillis()) { 2871 throw new IllegalArgumentException("event time must not be in the future"); 2872 } 2873 2874 mContext.enforceCallingOrSelfPermission( 2875 android.Manifest.permission.DEVICE_POWER, null); 2876 2877 final long ident = Binder.clearCallingIdentity(); 2878 try { 2879 goToSleepInternal(eventTime, reason, flags); 2880 } finally { 2881 Binder.restoreCallingIdentity(ident); 2882 } 2883 } 2884 2885 @Override // Binder call 2886 public void nap(long eventTime) { 2887 if (eventTime > SystemClock.uptimeMillis()) { 2888 throw new IllegalArgumentException("event time must not be in the future"); 2889 } 2890 2891 mContext.enforceCallingOrSelfPermission( 2892 android.Manifest.permission.DEVICE_POWER, null); 2893 2894 final long ident = Binder.clearCallingIdentity(); 2895 try { 2896 napInternal(eventTime); 2897 } finally { 2898 Binder.restoreCallingIdentity(ident); 2899 } 2900 } 2901 2902 @Override // Binder call 2903 public boolean isInteractive() { 2904 final long ident = Binder.clearCallingIdentity(); 2905 try { 2906 return isInteractiveInternal(); 2907 } finally { 2908 Binder.restoreCallingIdentity(ident); 2909 } 2910 } 2911 2912 @Override // Binder call 2913 public boolean isPowerSaveMode() { 2914 final long ident = Binder.clearCallingIdentity(); 2915 try { 2916 return isLowPowerModeInternal(); 2917 } finally { 2918 Binder.restoreCallingIdentity(ident); 2919 } 2920 } 2921 2922 /** 2923 * Reboots the device. 2924 * 2925 * @param confirm If true, shows a reboot confirmation dialog. 2926 * @param reason The reason for the reboot, or null if none. 2927 * @param wait If true, this call waits for the reboot to complete and does not return. 2928 */ 2929 @Override // Binder call 2930 public void reboot(boolean confirm, String reason, boolean wait) { 2931 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2932 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2933 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2934 } 2935 2936 final long ident = Binder.clearCallingIdentity(); 2937 try { 2938 shutdownOrRebootInternal(false, confirm, reason, wait); 2939 } finally { 2940 Binder.restoreCallingIdentity(ident); 2941 } 2942 } 2943 2944 /** 2945 * Shuts down the device. 2946 * 2947 * @param confirm If true, shows a shutdown confirmation dialog. 2948 * @param wait If true, this call waits for the shutdown to complete and does not return. 2949 */ 2950 @Override // Binder call 2951 public void shutdown(boolean confirm, boolean wait) { 2952 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2953 2954 final long ident = Binder.clearCallingIdentity(); 2955 try { 2956 shutdownOrRebootInternal(true, confirm, null, wait); 2957 } finally { 2958 Binder.restoreCallingIdentity(ident); 2959 } 2960 } 2961 2962 /** 2963 * Crash the runtime (causing a complete restart of the Android framework). 2964 * Requires REBOOT permission. Mostly for testing. Should not return. 2965 */ 2966 @Override // Binder call 2967 public void crash(String message) { 2968 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2969 2970 final long ident = Binder.clearCallingIdentity(); 2971 try { 2972 crashInternal(message); 2973 } finally { 2974 Binder.restoreCallingIdentity(ident); 2975 } 2976 } 2977 2978 /** 2979 * Set the setting that determines whether the device stays on when plugged in. 2980 * The argument is a bit string, with each bit specifying a power source that, 2981 * when the device is connected to that source, causes the device to stay on. 2982 * See {@link android.os.BatteryManager} for the list of power sources that 2983 * can be specified. Current values include 2984 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2985 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2986 * 2987 * Used by "adb shell svc power stayon ..." 2988 * 2989 * @param val an {@code int} containing the bits that specify which power sources 2990 * should cause the device to stay on. 2991 */ 2992 @Override // Binder call 2993 public void setStayOnSetting(int val) { 2994 mContext.enforceCallingOrSelfPermission( 2995 android.Manifest.permission.WRITE_SETTINGS, null); 2996 2997 final long ident = Binder.clearCallingIdentity(); 2998 try { 2999 setStayOnSettingInternal(val); 3000 } finally { 3001 Binder.restoreCallingIdentity(ident); 3002 } 3003 } 3004 3005 /** 3006 * Used by device administration to set the maximum screen off timeout. 3007 * 3008 * This method must only be called by the device administration policy manager. 3009 */ 3010 @Override // Binder call 3011 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 3012 final long ident = Binder.clearCallingIdentity(); 3013 try { 3014 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 3015 } finally { 3016 Binder.restoreCallingIdentity(ident); 3017 } 3018 } 3019 3020 /** 3021 * Used by the settings application and brightness control widgets to 3022 * temporarily override the current screen brightness setting so that the 3023 * user can observe the effect of an intended settings change without applying 3024 * it immediately. 3025 * 3026 * The override will be canceled when the setting value is next updated. 3027 * 3028 * @param brightness The overridden brightness. 3029 * 3030 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 3031 */ 3032 @Override // Binder call 3033 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 3034 mContext.enforceCallingOrSelfPermission( 3035 android.Manifest.permission.DEVICE_POWER, null); 3036 3037 final long ident = Binder.clearCallingIdentity(); 3038 try { 3039 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 3040 } finally { 3041 Binder.restoreCallingIdentity(ident); 3042 } 3043 } 3044 3045 /** 3046 * Used by the settings application and brightness control widgets to 3047 * temporarily override the current screen auto-brightness adjustment setting so that the 3048 * user can observe the effect of an intended settings change without applying 3049 * it immediately. 3050 * 3051 * The override will be canceled when the setting value is next updated. 3052 * 3053 * @param adj The overridden brightness, or Float.NaN to disable the override. 3054 * 3055 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 3056 */ 3057 @Override // Binder call 3058 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 3059 mContext.enforceCallingOrSelfPermission( 3060 android.Manifest.permission.DEVICE_POWER, null); 3061 3062 final long ident = Binder.clearCallingIdentity(); 3063 try { 3064 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 3065 } finally { 3066 Binder.restoreCallingIdentity(ident); 3067 } 3068 } 3069 3070 /** 3071 * Used by the phone application to make the attention LED flash when ringing. 3072 */ 3073 @Override // Binder call 3074 public void setAttentionLight(boolean on, int color) { 3075 mContext.enforceCallingOrSelfPermission( 3076 android.Manifest.permission.DEVICE_POWER, null); 3077 3078 final long ident = Binder.clearCallingIdentity(); 3079 try { 3080 setAttentionLightInternal(on, color); 3081 } finally { 3082 Binder.restoreCallingIdentity(ident); 3083 } 3084 } 3085 3086 @Override // Binder call 3087 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3088 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 3089 != PackageManager.PERMISSION_GRANTED) { 3090 pw.println("Permission Denial: can't dump PowerManager from from pid=" 3091 + Binder.getCallingPid() 3092 + ", uid=" + Binder.getCallingUid()); 3093 return; 3094 } 3095 3096 final long ident = Binder.clearCallingIdentity(); 3097 try { 3098 dumpInternal(pw); 3099 } finally { 3100 Binder.restoreCallingIdentity(ident); 3101 } 3102 } 3103 } 3104 3105 private final class LocalService extends PowerManagerInternal { 3106 @Override 3107 public void setScreenBrightnessOverrideFromWindowManager(int screenBrightness) { 3108 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3109 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3110 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3111 } 3112 setScreenBrightnessOverrideFromWindowManagerInternal(screenBrightness); 3113 } 3114 3115 @Override 3116 public void setButtonBrightnessOverrideFromWindowManager(int screenBrightness) { 3117 // Do nothing. 3118 // Button lights are not currently supported in the new implementation. 3119 } 3120 3121 @Override 3122 public void setDozeOverrideFromDreamManager(int screenState, int screenBrightness) { 3123 switch (screenState) { 3124 case Display.STATE_UNKNOWN: 3125 case Display.STATE_OFF: 3126 case Display.STATE_DOZE: 3127 case Display.STATE_DOZE_SUSPEND: 3128 case Display.STATE_ON: 3129 break; 3130 default: 3131 screenState = Display.STATE_UNKNOWN; 3132 break; 3133 } 3134 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3135 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3136 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3137 } 3138 setDozeOverrideFromDreamManagerInternal(screenState, screenBrightness); 3139 } 3140 3141 @Override 3142 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 3143 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 3144 } 3145 3146 @Override 3147 public boolean getLowPowerModeEnabled() { 3148 synchronized (mLock) { 3149 return mLowPowerModeEnabled; 3150 } 3151 } 3152 3153 @Override 3154 public void registerLowPowerModeObserver(LowPowerModeListener listener) { 3155 synchronized (mLock) { 3156 mLowPowerModeListeners.add(listener); 3157 } 3158 } 3159 } 3160} 3161