PowerManagerService.java revision 27736f5c0ada99bf2a7e007a1dec0ad51f65fa52
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.server.BatteryService; 22import com.android.server.EventLogTags; 23import com.android.server.LocalServices; 24import com.android.server.ServiceThread; 25import com.android.server.lights.Light; 26import com.android.server.lights.LightsManager; 27import com.android.server.Watchdog; 28 29import android.Manifest; 30import android.content.BroadcastReceiver; 31import android.content.ContentResolver; 32import android.content.Context; 33import android.content.Intent; 34import android.content.IntentFilter; 35import android.content.pm.PackageManager; 36import android.content.res.Resources; 37import android.database.ContentObserver; 38import android.hardware.SensorManager; 39import android.hardware.SystemSensorManager; 40import android.hardware.display.DisplayManagerInternal; 41import android.hardware.display.DisplayManagerInternal.DisplayPowerRequest; 42import android.net.Uri; 43import android.os.BatteryManager; 44import android.os.Binder; 45import android.os.Handler; 46import android.os.IBinder; 47import android.os.IPowerManager; 48import android.os.Looper; 49import android.os.Message; 50import android.os.PowerManager; 51import android.os.PowerManagerInternal; 52import android.os.Process; 53import android.os.RemoteException; 54import android.os.SystemClock; 55import android.os.SystemProperties; 56import android.os.SystemService; 57import android.os.UserHandle; 58import android.os.WorkSource; 59import android.provider.Settings; 60import android.service.dreams.DreamManagerInternal; 61import android.util.EventLog; 62import android.util.Log; 63import android.util.Slog; 64import android.util.TimeUtils; 65import android.view.Display; 66import android.view.WindowManagerPolicy; 67 68import java.io.FileDescriptor; 69import java.io.PrintWriter; 70import java.util.ArrayList; 71 72import libcore.util.Objects; 73 74/** 75 * The power manager service is responsible for coordinating power management 76 * functions on the device. 77 */ 78public final class PowerManagerService extends com.android.server.SystemService 79 implements Watchdog.Monitor { 80 private static final String TAG = "PowerManagerService"; 81 82 private static final boolean DEBUG = false; 83 private static final boolean DEBUG_SPEW = DEBUG && true; 84 85 // Message: Sent when a user activity timeout occurs to update the power state. 86 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 87 // Message: Sent when the device enters or exits a dreaming or dozing state. 88 private static final int MSG_SANDMAN = 2; 89 // Message: Sent when the screen on blocker is released. 90 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 91 // Message: Sent to poll whether the boot animation has terminated. 92 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 93 94 // Dirty bit: mWakeLocks changed 95 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 96 // Dirty bit: mWakefulness changed 97 private static final int DIRTY_WAKEFULNESS = 1 << 1; 98 // Dirty bit: user activity was poked or may have timed out 99 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 100 // Dirty bit: actual display power state was updated asynchronously 101 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 102 // Dirty bit: mBootCompleted changed 103 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 104 // Dirty bit: settings changed 105 private static final int DIRTY_SETTINGS = 1 << 5; 106 // Dirty bit: mIsPowered changed 107 private static final int DIRTY_IS_POWERED = 1 << 6; 108 // Dirty bit: mStayOn changed 109 private static final int DIRTY_STAY_ON = 1 << 7; 110 // Dirty bit: battery state changed 111 private static final int DIRTY_BATTERY_STATE = 1 << 8; 112 // Dirty bit: proximity state changed 113 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 114 // Dirty bit: screen on blocker state became held or unheld 115 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 116 // Dirty bit: dock state changed 117 private static final int DIRTY_DOCK_STATE = 1 << 11; 118 119 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 120 // The screen should be off or in the process of being turned off by the display controller. 121 // The device typically passes through the dozing state first. 122 private static final int WAKEFULNESS_ASLEEP = 0; 123 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 124 // When the user activity timeout expires, the device may start dreaming or go to sleep. 125 private static final int WAKEFULNESS_AWAKE = 1; 126 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 127 // which ends the dream. The device goes to sleep when goToSleep() is called, when 128 // the dream ends or when unplugged. 129 // User activity may brighten the screen but does not end the dream. 130 private static final int WAKEFULNESS_DREAMING = 2; 131 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 132 // low-power "doze" dream to run which keeps the display on but lets the application 133 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 134 // The device fully goes to sleep if the dream cannot be started or ends on its own. 135 private static final int WAKEFULNESS_DOZING = 3; 136 137 // Summarizes the state of all active wakelocks. 138 private static final int WAKE_LOCK_CPU = 1 << 0; 139 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 140 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 141 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 142 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 143 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 144 private static final int WAKE_LOCK_DOZE = 1 << 6; 145 146 // Summarizes the user activity state. 147 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 148 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 149 150 // Default timeout in milliseconds. This is only used until the settings 151 // provider populates the actual default value (R.integer.def_screen_off_timeout). 152 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 153 154 // The name of the boot animation service in init.rc. 155 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 156 157 // Poll interval in milliseconds for watching boot animation finished. 158 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 159 160 private final Context mContext; 161 private LightsManager mLightsManager; 162 private BatteryService mBatteryService; 163 private DisplayManagerInternal mDisplayManagerInternal; 164 private IBatteryStats mBatteryStats; 165 private IAppOpsService mAppOps; 166 private ServiceThread mHandlerThread; 167 private PowerManagerHandler mHandler; 168 private WindowManagerPolicy mPolicy; 169 private Notifier mNotifier; 170 private WirelessChargerDetector mWirelessChargerDetector; 171 private SettingsObserver mSettingsObserver; 172 private DreamManagerInternal mDreamManager; 173 private Light mAttentionLight; 174 175 private final Object mLock = new Object(); 176 177 // A bitfield that indicates what parts of the power state have 178 // changed and need to be recalculated. 179 private int mDirty; 180 181 // Indicates whether the device is awake or asleep or somewhere in between. 182 // This is distinct from the screen power state, which is managed separately. 183 private int mWakefulness; 184 185 // True if the sandman has just been summoned for the first time since entering the 186 // dreaming or dozing state. Indicates whether a new dream should begin. 187 private boolean mSandmanSummoned; 188 189 // True if MSG_SANDMAN has been scheduled. 190 private boolean mSandmanScheduled; 191 192 // Table of all suspend blockers. 193 // There should only be a few of these. 194 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 195 196 // Table of all wake locks acquired by applications. 197 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 198 199 // A bitfield that summarizes the state of all active wakelocks. 200 private int mWakeLockSummary; 201 202 // True if the device is in an interactive state. 203 private boolean mInteractive; 204 private boolean mInteractiveChanging; 205 206 // If true, instructs the display controller to wait for the proximity sensor to 207 // go negative before turning the screen on. 208 private boolean mRequestWaitForNegativeProximity; 209 210 // Timestamp of the last time the device was awoken or put to sleep. 211 private long mLastWakeTime; 212 private long mLastSleepTime; 213 214 // Timestamp of the last call to user activity. 215 private long mLastUserActivityTime; 216 private long mLastUserActivityTimeNoChangeLights; 217 218 // A bitfield that summarizes the effect of the user activity timer. 219 // A zero value indicates that the user activity timer has expired. 220 private int mUserActivitySummary; 221 222 // The desired display power state. The actual state may lag behind the 223 // requested because it is updated asynchronously by the display power controller. 224 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 225 226 // True if the display power state has been fully applied, which means the display 227 // is actually on or actually off or whatever was requested. 228 private boolean mDisplayReady; 229 230 // The suspend blocker used to keep the CPU alive when an application has acquired 231 // a wake lock. 232 private final SuspendBlocker mWakeLockSuspendBlocker; 233 234 // True if the wake lock suspend blocker has been acquired. 235 private boolean mHoldingWakeLockSuspendBlocker; 236 237 // The suspend blocker used to keep the CPU alive when the display is on, the 238 // display is getting ready or there is user activity (in which case the display 239 // must be on). 240 private final SuspendBlocker mDisplaySuspendBlocker; 241 242 // True if the display suspend blocker has been acquired. 243 private boolean mHoldingDisplaySuspendBlocker; 244 245 // The screen on blocker used to keep the screen from turning on while the lock 246 // screen is coming up. 247 private final ScreenOnBlockerImpl mScreenOnBlocker; 248 249 // True if systemReady() has been called. 250 private boolean mSystemReady; 251 252 // True if boot completed occurred. We keep the screen on until this happens. 253 private boolean mBootCompleted; 254 255 // True if auto-suspend mode is enabled. 256 // Refer to autosuspend.h. 257 private boolean mHalAutoSuspendModeEnabled; 258 259 // True if interactive mode is enabled. 260 // Refer to power.h. 261 private boolean mHalInteractiveModeEnabled; 262 263 // True if the device is plugged into a power source. 264 private boolean mIsPowered; 265 266 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 267 private int mPlugType; 268 269 // The current battery level percentage. 270 private int mBatteryLevel; 271 272 // The battery level percentage at the time the dream started. 273 // This is used to terminate a dream and go to sleep if the battery is 274 // draining faster than it is charging and the user activity timeout has expired. 275 private int mBatteryLevelWhenDreamStarted; 276 277 // The current dock state. 278 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 279 280 // True to decouple auto-suspend mode from the display state. 281 private boolean mDecoupleHalAutoSuspendModeFromDisplayConfig; 282 283 // True to decouple interactive mode from the display state. 284 private boolean mDecoupleHalInteractiveModeFromDisplayConfig; 285 286 // True if the device should wake up when plugged or unplugged. 287 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 288 289 // True if the device should suspend when the screen is off due to proximity. 290 private boolean mSuspendWhenScreenOffDueToProximityConfig; 291 292 // True if dreams are supported on this device. 293 private boolean mDreamsSupportedConfig; 294 295 // Default value for dreams enabled 296 private boolean mDreamsEnabledByDefaultConfig; 297 298 // Default value for dreams activate-on-sleep 299 private boolean mDreamsActivatedOnSleepByDefaultConfig; 300 301 // Default value for dreams activate-on-dock 302 private boolean mDreamsActivatedOnDockByDefaultConfig; 303 304 // True if dreams can run while not plugged in. 305 private boolean mDreamsEnabledOnBatteryConfig; 306 307 // Minimum battery level to allow dreaming when powered. 308 // Use -1 to disable this safety feature. 309 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 310 311 // Minimum battery level to allow dreaming when not powered. 312 // Use -1 to disable this safety feature. 313 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 314 315 // If the battery level drops by this percentage and the user activity timeout 316 // has expired, then assume the device is receiving insufficient current to charge 317 // effectively and terminate the dream. Use -1 to disable this safety feature. 318 private int mDreamsBatteryLevelDrainCutoffConfig; 319 320 // True if dreams are enabled by the user. 321 private boolean mDreamsEnabledSetting; 322 323 // True if dreams should be activated on sleep. 324 private boolean mDreamsActivateOnSleepSetting; 325 326 // True if dreams should be activated on dock. 327 private boolean mDreamsActivateOnDockSetting; 328 329 // The minimum screen off timeout, in milliseconds. 330 private int mMinimumScreenOffTimeoutConfig; 331 332 // The screen dim duration, in milliseconds. 333 // This is subtracted from the end of the screen off timeout so the 334 // minimum screen off timeout should be longer than this. 335 private int mMaximumScreenDimDurationConfig; 336 337 // The maximum screen dim time expressed as a ratio relative to the screen 338 // off timeout. If the screen off timeout is very short then we want the 339 // dim timeout to also be quite short so that most of the time is spent on. 340 // Otherwise the user won't get much screen on time before dimming occurs. 341 private float mMaximumScreenDimRatioConfig; 342 343 // The screen off timeout setting value in milliseconds. 344 private int mScreenOffTimeoutSetting; 345 346 // The maximum allowable screen off timeout according to the device 347 // administration policy. Overrides other settings. 348 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 349 350 // The stay on while plugged in setting. 351 // A bitfield of battery conditions under which to make the screen stay on. 352 private int mStayOnWhilePluggedInSetting; 353 354 // True if the device should stay on. 355 private boolean mStayOn; 356 357 // True if the proximity sensor reads a positive result. 358 private boolean mProximityPositive; 359 360 // Screen brightness setting limits. 361 private int mScreenBrightnessSettingMinimum; 362 private int mScreenBrightnessSettingMaximum; 363 private int mScreenBrightnessSettingDefault; 364 365 // The screen brightness setting, from 0 to 255. 366 // Use -1 if no value has been set. 367 private int mScreenBrightnessSetting; 368 369 // The screen auto-brightness adjustment setting, from -1 to 1. 370 // Use 0 if there is no adjustment. 371 private float mScreenAutoBrightnessAdjustmentSetting; 372 373 // The screen brightness mode. 374 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 375 private int mScreenBrightnessModeSetting; 376 377 // The screen brightness setting override from the window manager 378 // to allow the current foreground activity to override the brightness. 379 // Use -1 to disable. 380 private int mScreenBrightnessOverrideFromWindowManager = -1; 381 382 // The user activity timeout override from the window manager 383 // to allow the current foreground activity to override the user activity timeout. 384 // Use -1 to disable. 385 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 386 387 // The screen brightness setting override from the settings application 388 // to temporarily adjust the brightness until next updated, 389 // Use -1 to disable. 390 private int mTemporaryScreenBrightnessSettingOverride = -1; 391 392 // The screen brightness adjustment setting override from the settings 393 // application to temporarily adjust the auto-brightness adjustment factor 394 // until next updated, in the range -1..1. 395 // Use NaN to disable. 396 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 397 398 // Time when we last logged a warning about calling userActivity() without permission. 399 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 400 401 private native void nativeInit(); 402 403 private static native void nativeAcquireSuspendBlocker(String name); 404 private static native void nativeReleaseSuspendBlocker(String name); 405 private static native void nativeSetInteractive(boolean enable); 406 private static native void nativeSetAutoSuspend(boolean enable); 407 408 public PowerManagerService(Context context) { 409 super(context); 410 mContext = context; 411 synchronized (mLock) { 412 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 413 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 414 mDisplaySuspendBlocker.acquire(); 415 mHoldingDisplaySuspendBlocker = true; 416 mHalAutoSuspendModeEnabled = false; 417 mHalInteractiveModeEnabled = true; 418 419 mScreenOnBlocker = new ScreenOnBlockerImpl(); 420 mWakefulness = WAKEFULNESS_AWAKE; 421 mInteractive = true; 422 423 nativeInit(); 424 nativeSetAutoSuspend(false); 425 nativeSetInteractive(true); 426 } 427 } 428 429 @Override 430 public void onStart() { 431 publishBinderService(Context.POWER_SERVICE, new BinderService()); 432 publishLocalService(PowerManagerInternal.class, new LocalService()); 433 } 434 435 /** 436 * Initialize the power manager. 437 * Must be called before any other functions within the power manager are called. 438 */ 439 public void init(LightsManager ls, 440 BatteryService bs, IBatteryStats bss, 441 IAppOpsService appOps) { 442 mLightsManager = ls; 443 mBatteryService = bs; 444 mBatteryStats = bss; 445 mAppOps = appOps; 446 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 447 mHandlerThread = new ServiceThread(TAG, 448 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 449 mHandlerThread.start(); 450 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 451 452 Watchdog.getInstance().addMonitor(this); 453 Watchdog.getInstance().addThread(mHandler); 454 } 455 456 void setPolicy(WindowManagerPolicy policy) { 457 synchronized (mLock) { 458 mPolicy = policy; 459 } 460 } 461 462 public void systemReady() { 463 synchronized (mLock) { 464 mSystemReady = true; 465 mDreamManager = LocalServices.getService(DreamManagerInternal.class); 466 467 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 468 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 469 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 470 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 471 472 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 473 474 // The notifier runs on the system server's main looper so as not to interfere 475 // with the animations and other critical functions of the power manager. 476 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 477 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 478 mScreenOnBlocker, mPolicy); 479 480 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 481 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 482 mHandler); 483 mSettingsObserver = new SettingsObserver(mHandler); 484 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 485 486 // Initialize display power management. 487 mDisplayManagerInternal.initPowerManagement( 488 mDisplayPowerCallbacks, mHandler, sensorManager); 489 490 // Register for broadcasts from other components of the system. 491 IntentFilter filter = new IntentFilter(); 492 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 493 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 494 495 filter = new IntentFilter(); 496 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 497 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 498 499 filter = new IntentFilter(); 500 filter.addAction(Intent.ACTION_DREAMING_STARTED); 501 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 502 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 503 504 filter = new IntentFilter(); 505 filter.addAction(Intent.ACTION_USER_SWITCHED); 506 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 507 508 filter = new IntentFilter(); 509 filter.addAction(Intent.ACTION_DOCK_EVENT); 510 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 511 512 // Register for settings changes. 513 final ContentResolver resolver = mContext.getContentResolver(); 514 resolver.registerContentObserver(Settings.Secure.getUriFor( 515 Settings.Secure.SCREENSAVER_ENABLED), 516 false, mSettingsObserver, UserHandle.USER_ALL); 517 resolver.registerContentObserver(Settings.Secure.getUriFor( 518 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 519 false, mSettingsObserver, UserHandle.USER_ALL); 520 resolver.registerContentObserver(Settings.Secure.getUriFor( 521 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 522 false, mSettingsObserver, UserHandle.USER_ALL); 523 resolver.registerContentObserver(Settings.System.getUriFor( 524 Settings.System.SCREEN_OFF_TIMEOUT), 525 false, mSettingsObserver, UserHandle.USER_ALL); 526 resolver.registerContentObserver(Settings.Global.getUriFor( 527 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 528 false, mSettingsObserver, UserHandle.USER_ALL); 529 resolver.registerContentObserver(Settings.System.getUriFor( 530 Settings.System.SCREEN_BRIGHTNESS), 531 false, mSettingsObserver, UserHandle.USER_ALL); 532 resolver.registerContentObserver(Settings.System.getUriFor( 533 Settings.System.SCREEN_BRIGHTNESS_MODE), 534 false, mSettingsObserver, UserHandle.USER_ALL); 535 536 // Go. 537 readConfigurationLocked(); 538 updateSettingsLocked(); 539 mDirty |= DIRTY_BATTERY_STATE; 540 updatePowerStateLocked(); 541 } 542 } 543 544 private void readConfigurationLocked() { 545 final Resources resources = mContext.getResources(); 546 547 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 548 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 549 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 550 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 551 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 552 com.android.internal.R.bool.config_unplugTurnsOnScreen); 553 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 554 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 555 mDreamsSupportedConfig = resources.getBoolean( 556 com.android.internal.R.bool.config_dreamsSupported); 557 mDreamsEnabledByDefaultConfig = resources.getBoolean( 558 com.android.internal.R.bool.config_dreamsEnabledByDefault); 559 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 560 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 561 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 562 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 563 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 564 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 565 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 566 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 567 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 568 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 569 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 570 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 571 mMinimumScreenOffTimeoutConfig = resources.getInteger( 572 com.android.internal.R.integer.config_minimumScreenOffTimeout); 573 mMaximumScreenDimDurationConfig = resources.getInteger( 574 com.android.internal.R.integer.config_maximumScreenDimDuration); 575 mMaximumScreenDimRatioConfig = resources.getFraction( 576 com.android.internal.R.fraction.config_maximumScreenDimRatio, 1, 1); 577 } 578 579 private void updateSettingsLocked() { 580 final ContentResolver resolver = mContext.getContentResolver(); 581 582 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 583 Settings.Secure.SCREENSAVER_ENABLED, 584 mDreamsEnabledByDefaultConfig ? 1 : 0, 585 UserHandle.USER_CURRENT) != 0); 586 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 587 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 588 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 589 UserHandle.USER_CURRENT) != 0); 590 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 591 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 592 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 593 UserHandle.USER_CURRENT) != 0); 594 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 595 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 596 UserHandle.USER_CURRENT); 597 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 598 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 599 600 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 601 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 602 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 603 UserHandle.USER_CURRENT); 604 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 605 mTemporaryScreenBrightnessSettingOverride = -1; 606 } 607 608 final float oldScreenAutoBrightnessAdjustmentSetting = 609 mScreenAutoBrightnessAdjustmentSetting; 610 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 611 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 612 UserHandle.USER_CURRENT); 613 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 614 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 615 } 616 617 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 618 Settings.System.SCREEN_BRIGHTNESS_MODE, 619 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 620 621 mDirty |= DIRTY_SETTINGS; 622 } 623 624 private void handleSettingsChangedLocked() { 625 updateSettingsLocked(); 626 updatePowerStateLocked(); 627 } 628 629 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 630 WorkSource ws, int uid, int pid) { 631 synchronized (mLock) { 632 if (DEBUG_SPEW) { 633 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 634 + ", flags=0x" + Integer.toHexString(flags) 635 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 636 } 637 638 WakeLock wakeLock; 639 int index = findWakeLockIndexLocked(lock); 640 if (index >= 0) { 641 wakeLock = mWakeLocks.get(index); 642 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 643 // Update existing wake lock. This shouldn't happen but is harmless. 644 notifyWakeLockReleasedLocked(wakeLock); 645 wakeLock.updateProperties(flags, tag, packageName, ws, uid, pid); 646 notifyWakeLockAcquiredLocked(wakeLock); 647 } 648 } else { 649 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, uid, pid); 650 try { 651 lock.linkToDeath(wakeLock, 0); 652 } catch (RemoteException ex) { 653 throw new IllegalArgumentException("Wake lock is already dead."); 654 } 655 notifyWakeLockAcquiredLocked(wakeLock); 656 mWakeLocks.add(wakeLock); 657 } 658 659 applyWakeLockFlagsOnAcquireLocked(wakeLock); 660 mDirty |= DIRTY_WAKE_LOCKS; 661 updatePowerStateLocked(); 662 } 663 } 664 665 @SuppressWarnings("deprecation") 666 private static boolean isScreenLock(final WakeLock wakeLock) { 667 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 668 case PowerManager.FULL_WAKE_LOCK: 669 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 670 case PowerManager.SCREEN_DIM_WAKE_LOCK: 671 return true; 672 } 673 return false; 674 } 675 676 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 677 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 678 && isScreenLock(wakeLock)) { 679 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 680 } 681 } 682 683 private void releaseWakeLockInternal(IBinder lock, int flags) { 684 synchronized (mLock) { 685 int index = findWakeLockIndexLocked(lock); 686 if (index < 0) { 687 if (DEBUG_SPEW) { 688 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 689 + " [not found], flags=0x" + Integer.toHexString(flags)); 690 } 691 return; 692 } 693 694 WakeLock wakeLock = mWakeLocks.get(index); 695 if (DEBUG_SPEW) { 696 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 697 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 698 } 699 700 mWakeLocks.remove(index); 701 notifyWakeLockReleasedLocked(wakeLock); 702 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 703 704 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 705 mRequestWaitForNegativeProximity = true; 706 } 707 708 applyWakeLockFlagsOnReleaseLocked(wakeLock); 709 mDirty |= DIRTY_WAKE_LOCKS; 710 updatePowerStateLocked(); 711 } 712 } 713 714 private void handleWakeLockDeath(WakeLock wakeLock) { 715 synchronized (mLock) { 716 if (DEBUG_SPEW) { 717 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 718 + " [" + wakeLock.mTag + "]"); 719 } 720 721 int index = mWakeLocks.indexOf(wakeLock); 722 if (index < 0) { 723 return; 724 } 725 726 mWakeLocks.remove(index); 727 notifyWakeLockReleasedLocked(wakeLock); 728 729 applyWakeLockFlagsOnReleaseLocked(wakeLock); 730 mDirty |= DIRTY_WAKE_LOCKS; 731 updatePowerStateLocked(); 732 } 733 } 734 735 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 736 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 737 && isScreenLock(wakeLock)) { 738 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 739 PowerManager.USER_ACTIVITY_EVENT_OTHER, 740 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 741 wakeLock.mOwnerUid); 742 } 743 } 744 745 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws) { 746 synchronized (mLock) { 747 int index = findWakeLockIndexLocked(lock); 748 if (index < 0) { 749 if (DEBUG_SPEW) { 750 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 751 + " [not found], ws=" + ws); 752 } 753 throw new IllegalArgumentException("Wake lock not active"); 754 } 755 756 WakeLock wakeLock = mWakeLocks.get(index); 757 if (DEBUG_SPEW) { 758 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 759 + " [" + wakeLock.mTag + "], ws=" + ws); 760 } 761 762 if (!wakeLock.hasSameWorkSource(ws)) { 763 notifyWakeLockReleasedLocked(wakeLock); 764 wakeLock.updateWorkSource(ws); 765 notifyWakeLockAcquiredLocked(wakeLock); 766 } 767 } 768 } 769 770 private int findWakeLockIndexLocked(IBinder lock) { 771 final int count = mWakeLocks.size(); 772 for (int i = 0; i < count; i++) { 773 if (mWakeLocks.get(i).mLock == lock) { 774 return i; 775 } 776 } 777 return -1; 778 } 779 780 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 781 if (mSystemReady) { 782 wakeLock.mNotifiedAcquired = true; 783 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 784 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 785 } 786 } 787 788 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 789 if (mSystemReady && wakeLock.mNotifiedAcquired) { 790 wakeLock.mNotifiedAcquired = false; 791 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 792 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 793 } 794 } 795 796 @SuppressWarnings("deprecation") 797 private boolean isWakeLockLevelSupportedInternal(int level) { 798 synchronized (mLock) { 799 switch (level) { 800 case PowerManager.PARTIAL_WAKE_LOCK: 801 case PowerManager.SCREEN_DIM_WAKE_LOCK: 802 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 803 case PowerManager.FULL_WAKE_LOCK: 804 case PowerManager.DOZE_WAKE_LOCK: 805 return true; 806 807 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 808 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 809 810 default: 811 return false; 812 } 813 } 814 } 815 816 // Called from native code. 817 private void userActivityFromNative(long eventTime, int event, int flags) { 818 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 819 } 820 821 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 822 synchronized (mLock) { 823 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 824 updatePowerStateLocked(); 825 } 826 } 827 } 828 829 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 830 if (DEBUG_SPEW) { 831 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 832 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 833 + ", uid=" + uid); 834 } 835 836 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 837 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 838 || !mBootCompleted || !mSystemReady) { 839 return false; 840 } 841 842 mNotifier.onUserActivity(event, uid); 843 844 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 845 if (eventTime > mLastUserActivityTimeNoChangeLights 846 && eventTime > mLastUserActivityTime) { 847 mLastUserActivityTimeNoChangeLights = eventTime; 848 mDirty |= DIRTY_USER_ACTIVITY; 849 return true; 850 } 851 } else { 852 if (eventTime > mLastUserActivityTime) { 853 mLastUserActivityTime = eventTime; 854 mDirty |= DIRTY_USER_ACTIVITY; 855 return true; 856 } 857 } 858 return false; 859 } 860 861 private void wakeUpInternal(long eventTime) { 862 synchronized (mLock) { 863 if (wakeUpNoUpdateLocked(eventTime)) { 864 updatePowerStateLocked(); 865 } 866 } 867 } 868 869 private boolean wakeUpNoUpdateLocked(long eventTime) { 870 if (DEBUG_SPEW) { 871 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 872 } 873 874 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 875 || !mBootCompleted || !mSystemReady) { 876 return false; 877 } 878 879 switch (mWakefulness) { 880 case WAKEFULNESS_ASLEEP: 881 Slog.i(TAG, "Waking up from sleep..."); 882 break; 883 case WAKEFULNESS_DREAMING: 884 Slog.i(TAG, "Waking up from dream..."); 885 break; 886 case WAKEFULNESS_DOZING: 887 Slog.i(TAG, "Waking up from dozing..."); 888 break; 889 } 890 891 mLastWakeTime = eventTime; 892 mDirty |= DIRTY_WAKEFULNESS; 893 mWakefulness = WAKEFULNESS_AWAKE; 894 setInteractiveStateLocked(true, 0); 895 896 userActivityNoUpdateLocked( 897 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 898 return true; 899 } 900 901 private void goToSleepInternal(long eventTime, int reason) { 902 synchronized (mLock) { 903 if (goToSleepNoUpdateLocked(eventTime, reason)) { 904 updatePowerStateLocked(); 905 } 906 } 907 } 908 909 // This method is called goToSleep for historical reasons but we actually start 910 // dozing before really going to sleep. 911 @SuppressWarnings("deprecation") 912 private boolean goToSleepNoUpdateLocked(long eventTime, int reason) { 913 if (DEBUG_SPEW) { 914 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime + ", reason=" + reason); 915 } 916 917 if (eventTime < mLastWakeTime 918 || mWakefulness == WAKEFULNESS_ASLEEP 919 || mWakefulness == WAKEFULNESS_DOZING 920 || !mBootCompleted || !mSystemReady) { 921 return false; 922 } 923 924 switch (reason) { 925 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 926 Slog.i(TAG, "Going to sleep due to device administration policy..."); 927 break; 928 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 929 Slog.i(TAG, "Going to sleep due to screen timeout..."); 930 break; 931 default: 932 Slog.i(TAG, "Going to sleep by user request..."); 933 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 934 break; 935 } 936 937 mLastSleepTime = eventTime; 938 mDirty |= DIRTY_WAKEFULNESS; 939 mWakefulness = WAKEFULNESS_DOZING; 940 mSandmanSummoned = true; 941 setInteractiveStateLocked(false, reason); 942 943 // Report the number of wake locks that will be cleared by going to sleep. 944 int numWakeLocksCleared = 0; 945 final int numWakeLocks = mWakeLocks.size(); 946 for (int i = 0; i < numWakeLocks; i++) { 947 final WakeLock wakeLock = mWakeLocks.get(i); 948 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 949 case PowerManager.FULL_WAKE_LOCK: 950 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 951 case PowerManager.SCREEN_DIM_WAKE_LOCK: 952 numWakeLocksCleared += 1; 953 break; 954 } 955 } 956 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 957 return true; 958 } 959 960 private void napInternal(long eventTime) { 961 synchronized (mLock) { 962 if (napNoUpdateLocked(eventTime)) { 963 updatePowerStateLocked(); 964 } 965 } 966 } 967 968 private boolean napNoUpdateLocked(long eventTime) { 969 if (DEBUG_SPEW) { 970 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 971 } 972 973 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 974 || !mBootCompleted || !mSystemReady) { 975 return false; 976 } 977 978 Slog.i(TAG, "Nap time..."); 979 980 mDirty |= DIRTY_WAKEFULNESS; 981 mWakefulness = WAKEFULNESS_DREAMING; 982 mSandmanSummoned = true; 983 setInteractiveStateLocked(true, 0); 984 return true; 985 } 986 987 // Done dozing, drop everything and go to sleep. 988 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 989 if (DEBUG_SPEW) { 990 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 991 } 992 993 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 994 || !mBootCompleted || !mSystemReady) { 995 return false; 996 } 997 998 Slog.i(TAG, "Sleeping..."); 999 1000 mDirty |= DIRTY_WAKEFULNESS; 1001 mWakefulness = WAKEFULNESS_ASLEEP; 1002 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1003 return true; 1004 } 1005 1006 private void setInteractiveStateLocked(boolean interactive, int reason) { 1007 if (mInteractive != interactive) { 1008 finishInteractiveStateChangeLocked(); 1009 1010 mInteractive = interactive; 1011 mInteractiveChanging = true; 1012 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1013 } 1014 } 1015 1016 private void finishInteractiveStateChangeLocked() { 1017 if (mInteractiveChanging) { 1018 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1019 mInteractiveChanging = false; 1020 } 1021 } 1022 1023 /** 1024 * Updates the global power state based on dirty bits recorded in mDirty. 1025 * 1026 * This is the main function that performs power state transitions. 1027 * We centralize them here so that we can recompute the power state completely 1028 * each time something important changes, and ensure that we do it the same 1029 * way each time. The point is to gather all of the transition logic here. 1030 */ 1031 private void updatePowerStateLocked() { 1032 if (!mSystemReady || mDirty == 0) { 1033 return; 1034 } 1035 if (!Thread.holdsLock(mLock)) { 1036 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1037 } 1038 1039 // Phase 0: Basic state updates. 1040 updateIsPoweredLocked(mDirty); 1041 updateStayOnLocked(mDirty); 1042 1043 // Phase 1: Update wakefulness. 1044 // Loop because the wake lock and user activity computations are influenced 1045 // by changes in wakefulness. 1046 final long now = SystemClock.uptimeMillis(); 1047 int dirtyPhase2 = 0; 1048 for (;;) { 1049 int dirtyPhase1 = mDirty; 1050 dirtyPhase2 |= dirtyPhase1; 1051 mDirty = 0; 1052 1053 updateWakeLockSummaryLocked(dirtyPhase1); 1054 updateUserActivitySummaryLocked(now, dirtyPhase1); 1055 if (!updateWakefulnessLocked(dirtyPhase1)) { 1056 break; 1057 } 1058 } 1059 1060 // Phase 2: Update dreams and display power state. 1061 updateDreamLocked(dirtyPhase2); 1062 updateDisplayPowerStateLocked(dirtyPhase2); 1063 1064 // Phase 3: Send notifications, if needed. 1065 if (mDisplayReady) { 1066 finishInteractiveStateChangeLocked(); 1067 } 1068 1069 // Phase 4: Update suspend blocker. 1070 // Because we might release the last suspend blocker here, we need to make sure 1071 // we finished everything else first! 1072 updateSuspendBlockerLocked(); 1073 } 1074 1075 /** 1076 * Updates the value of mIsPowered. 1077 * Sets DIRTY_IS_POWERED if a change occurred. 1078 */ 1079 private void updateIsPoweredLocked(int dirty) { 1080 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1081 final boolean wasPowered = mIsPowered; 1082 final int oldPlugType = mPlugType; 1083 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1084 mPlugType = mBatteryService.getPlugType(); 1085 mBatteryLevel = mBatteryService.getBatteryLevel(); 1086 1087 if (DEBUG_SPEW) { 1088 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1089 + ", mIsPowered=" + mIsPowered 1090 + ", oldPlugType=" + oldPlugType 1091 + ", mPlugType=" + mPlugType 1092 + ", mBatteryLevel=" + mBatteryLevel); 1093 } 1094 1095 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1096 mDirty |= DIRTY_IS_POWERED; 1097 1098 // Update wireless dock detection state. 1099 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1100 mIsPowered, mPlugType, mBatteryLevel); 1101 1102 // Treat plugging and unplugging the devices as a user activity. 1103 // Users find it disconcerting when they plug or unplug the device 1104 // and it shuts off right away. 1105 // Some devices also wake the device when plugged or unplugged because 1106 // they don't have a charging LED. 1107 final long now = SystemClock.uptimeMillis(); 1108 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1109 dockedOnWirelessCharger)) { 1110 wakeUpNoUpdateLocked(now); 1111 } 1112 userActivityNoUpdateLocked( 1113 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1114 1115 // Tell the notifier whether wireless charging has started so that 1116 // it can provide feedback to the user. 1117 if (dockedOnWirelessCharger) { 1118 mNotifier.onWirelessChargingStarted(); 1119 } 1120 } 1121 } 1122 } 1123 1124 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1125 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1126 // Don't wake when powered unless configured to do so. 1127 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1128 return false; 1129 } 1130 1131 // Don't wake when undocked from wireless charger. 1132 // See WirelessChargerDetector for justification. 1133 if (wasPowered && !mIsPowered 1134 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1135 return false; 1136 } 1137 1138 // Don't wake when docked on wireless charger unless we are certain of it. 1139 // See WirelessChargerDetector for justification. 1140 if (!wasPowered && mIsPowered 1141 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1142 && !dockedOnWirelessCharger) { 1143 return false; 1144 } 1145 1146 // If already dreaming and becoming powered, then don't wake. 1147 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1148 return false; 1149 } 1150 1151 // Otherwise wake up! 1152 return true; 1153 } 1154 1155 /** 1156 * Updates the value of mStayOn. 1157 * Sets DIRTY_STAY_ON if a change occurred. 1158 */ 1159 private void updateStayOnLocked(int dirty) { 1160 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1161 final boolean wasStayOn = mStayOn; 1162 if (mStayOnWhilePluggedInSetting != 0 1163 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1164 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1165 } else { 1166 mStayOn = false; 1167 } 1168 1169 if (mStayOn != wasStayOn) { 1170 mDirty |= DIRTY_STAY_ON; 1171 } 1172 } 1173 } 1174 1175 /** 1176 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1177 * Note that most wake-locks are ignored when the system is asleep. 1178 * 1179 * This function must have no other side-effects. 1180 */ 1181 @SuppressWarnings("deprecation") 1182 private void updateWakeLockSummaryLocked(int dirty) { 1183 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1184 mWakeLockSummary = 0; 1185 1186 final int numWakeLocks = mWakeLocks.size(); 1187 for (int i = 0; i < numWakeLocks; i++) { 1188 final WakeLock wakeLock = mWakeLocks.get(i); 1189 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1190 case PowerManager.PARTIAL_WAKE_LOCK: 1191 mWakeLockSummary |= WAKE_LOCK_CPU; 1192 break; 1193 case PowerManager.FULL_WAKE_LOCK: 1194 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1195 break; 1196 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1197 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1198 break; 1199 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1200 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1201 break; 1202 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1203 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1204 break; 1205 case PowerManager.DOZE_WAKE_LOCK: 1206 mWakeLockSummary |= WAKE_LOCK_DOZE; 1207 break; 1208 } 1209 } 1210 1211 // Cancel wake locks that make no sense based on the current state. 1212 if (mWakefulness != WAKEFULNESS_DOZING) { 1213 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1214 } 1215 if (mWakefulness == WAKEFULNESS_ASLEEP 1216 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1217 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1218 | WAKE_LOCK_BUTTON_BRIGHT); 1219 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1220 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1221 } 1222 } 1223 1224 // Infer implied wake locks where necessary based on the current state. 1225 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1226 if (mWakefulness == WAKEFULNESS_AWAKE) { 1227 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1228 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1229 mWakeLockSummary |= WAKE_LOCK_CPU; 1230 } 1231 } 1232 1233 if (DEBUG_SPEW) { 1234 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1235 + wakefulnessToString(mWakefulness) 1236 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1237 } 1238 } 1239 } 1240 1241 /** 1242 * Updates the value of mUserActivitySummary to summarize the user requested 1243 * state of the system such as whether the screen should be bright or dim. 1244 * Note that user activity is ignored when the system is asleep. 1245 * 1246 * This function must have no other side-effects. 1247 */ 1248 private void updateUserActivitySummaryLocked(long now, int dirty) { 1249 // Update the status of the user activity timeout timer. 1250 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1251 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1252 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1253 1254 long nextTimeout = 0; 1255 if (mWakefulness == WAKEFULNESS_AWAKE 1256 || mWakefulness == WAKEFULNESS_DREAMING 1257 || mWakefulness == WAKEFULNESS_DOZING) { 1258 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1259 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1260 1261 mUserActivitySummary = 0; 1262 if (mLastUserActivityTime >= mLastWakeTime) { 1263 nextTimeout = mLastUserActivityTime 1264 + screenOffTimeout - screenDimDuration; 1265 if (now < nextTimeout) { 1266 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1267 } else { 1268 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1269 if (now < nextTimeout) { 1270 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1271 } 1272 } 1273 } 1274 if (mUserActivitySummary == 0 1275 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1276 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1277 if (now < nextTimeout 1278 && mDisplayPowerRequest.wantScreenOnNormal()) { 1279 mUserActivitySummary = mDisplayPowerRequest.screenState 1280 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1281 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1282 } 1283 } 1284 if (mUserActivitySummary != 0) { 1285 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1286 msg.setAsynchronous(true); 1287 mHandler.sendMessageAtTime(msg, nextTimeout); 1288 } 1289 } else { 1290 mUserActivitySummary = 0; 1291 } 1292 1293 if (DEBUG_SPEW) { 1294 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1295 + wakefulnessToString(mWakefulness) 1296 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1297 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1298 } 1299 } 1300 } 1301 1302 /** 1303 * Called when a user activity timeout has occurred. 1304 * Simply indicates that something about user activity has changed so that the new 1305 * state can be recomputed when the power state is updated. 1306 * 1307 * This function must have no other side-effects besides setting the dirty 1308 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1309 */ 1310 private void handleUserActivityTimeout() { // runs on handler thread 1311 synchronized (mLock) { 1312 if (DEBUG_SPEW) { 1313 Slog.d(TAG, "handleUserActivityTimeout"); 1314 } 1315 1316 mDirty |= DIRTY_USER_ACTIVITY; 1317 updatePowerStateLocked(); 1318 } 1319 } 1320 1321 private int getScreenOffTimeoutLocked() { 1322 int timeout = mScreenOffTimeoutSetting; 1323 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1324 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1325 } 1326 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1327 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1328 } 1329 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1330 } 1331 1332 private int getScreenDimDurationLocked(int screenOffTimeout) { 1333 return Math.min(mMaximumScreenDimDurationConfig, 1334 (int)(screenOffTimeout * mMaximumScreenDimRatioConfig)); 1335 } 1336 1337 /** 1338 * Updates the wakefulness of the device. 1339 * 1340 * This is the function that decides whether the device should start dreaming 1341 * based on the current wake locks and user activity state. It may modify mDirty 1342 * if the wakefulness changes. 1343 * 1344 * Returns true if the wakefulness changed and we need to restart power state calculation. 1345 */ 1346 private boolean updateWakefulnessLocked(int dirty) { 1347 boolean changed = false; 1348 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1349 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1350 | DIRTY_DOCK_STATE)) != 0) { 1351 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1352 if (DEBUG_SPEW) { 1353 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1354 } 1355 final long time = SystemClock.uptimeMillis(); 1356 if (shouldNapAtBedTimeLocked()) { 1357 changed = napNoUpdateLocked(time); 1358 } else { 1359 changed = goToSleepNoUpdateLocked(time, 1360 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1361 } 1362 } 1363 } 1364 return changed; 1365 } 1366 1367 /** 1368 * Returns true if the device should automatically nap and start dreaming when the user 1369 * activity timeout has expired and it's bedtime. 1370 */ 1371 private boolean shouldNapAtBedTimeLocked() { 1372 return mDreamsActivateOnSleepSetting 1373 || (mDreamsActivateOnDockSetting 1374 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1375 } 1376 1377 /** 1378 * Returns true if the device should go to sleep now. 1379 * Also used when exiting a dream to determine whether we should go back 1380 * to being fully awake or else go to sleep for good. 1381 */ 1382 private boolean isItBedTimeYetLocked() { 1383 return mBootCompleted && !isBeingKeptAwakeLocked(); 1384 } 1385 1386 /** 1387 * Returns true if the device is being kept awake by a wake lock, user activity 1388 * or the stay on while powered setting. We also keep the phone awake when 1389 * the proximity sensor returns a positive result so that the device does not 1390 * lock while in a phone call. This function only controls whether the device 1391 * will go to sleep or dream which is independent of whether it will be allowed 1392 * to suspend. 1393 */ 1394 private boolean isBeingKeptAwakeLocked() { 1395 return mStayOn 1396 || mProximityPositive 1397 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1398 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1399 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1400 } 1401 1402 /** 1403 * Determines whether to post a message to the sandman to update the dream state. 1404 */ 1405 private void updateDreamLocked(int dirty) { 1406 if ((dirty & (DIRTY_WAKEFULNESS 1407 | DIRTY_USER_ACTIVITY 1408 | DIRTY_WAKE_LOCKS 1409 | DIRTY_BOOT_COMPLETED 1410 | DIRTY_SETTINGS 1411 | DIRTY_IS_POWERED 1412 | DIRTY_STAY_ON 1413 | DIRTY_PROXIMITY_POSITIVE 1414 | DIRTY_BATTERY_STATE)) != 0) { 1415 scheduleSandmanLocked(); 1416 } 1417 } 1418 1419 private void scheduleSandmanLocked() { 1420 if (!mSandmanScheduled) { 1421 mSandmanScheduled = true; 1422 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1423 msg.setAsynchronous(true); 1424 mHandler.sendMessage(msg); 1425 } 1426 } 1427 1428 /** 1429 * Called when the device enters or exits a dreaming or dozing state. 1430 * 1431 * We do this asynchronously because we must call out of the power manager to start 1432 * the dream and we don't want to hold our lock while doing so. There is a risk that 1433 * the device will wake or go to sleep in the meantime so we have to handle that case. 1434 */ 1435 private void handleSandman() { // runs on handler thread 1436 // Handle preconditions. 1437 final boolean startDreaming; 1438 final int wakefulness; 1439 synchronized (mLock) { 1440 mSandmanScheduled = false; 1441 wakefulness = mWakefulness; 1442 if (mSandmanSummoned) { 1443 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1444 || wakefulness == WAKEFULNESS_DOZING); 1445 mSandmanSummoned = false; 1446 } else { 1447 startDreaming = false; 1448 } 1449 } 1450 1451 // Start dreaming if needed. 1452 // We only control the dream on the handler thread, so we don't need to worry about 1453 // concurrent attempts to start or stop the dream. 1454 final boolean isDreaming; 1455 if (mDreamManager != null) { 1456 // Restart the dream whenever the sandman is summoned. 1457 if (startDreaming) { 1458 mDreamManager.stopDream(); 1459 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1460 } 1461 isDreaming = mDreamManager.isDreaming(); 1462 } else { 1463 isDreaming = false; 1464 } 1465 1466 // Update dream state. 1467 synchronized (mLock) { 1468 // Remember the initial battery level when the dream started. 1469 if (startDreaming && isDreaming) { 1470 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1471 if (wakefulness == WAKEFULNESS_DOZING) { 1472 Slog.i(TAG, "Dozing..."); 1473 } else { 1474 Slog.i(TAG, "Dreaming..."); 1475 } 1476 } 1477 1478 // If preconditions changed, wait for the next iteration to determine 1479 // whether the dream should continue (or be restarted). 1480 if (mSandmanSummoned || mWakefulness != wakefulness) { 1481 return; // wait for next cycle 1482 } 1483 1484 // Determine whether the dream should continue. 1485 if (wakefulness == WAKEFULNESS_DREAMING) { 1486 if (isDreaming && canDreamLocked()) { 1487 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1488 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1489 - mDreamsBatteryLevelDrainCutoffConfig 1490 && !isBeingKeptAwakeLocked()) { 1491 // If the user activity timeout expired and the battery appears 1492 // to be draining faster than it is charging then stop dreaming 1493 // and go to sleep. 1494 Slog.i(TAG, "Stopping dream because the battery appears to " 1495 + "be draining faster than it is charging. " 1496 + "Battery level when dream started: " 1497 + mBatteryLevelWhenDreamStarted + "%. " 1498 + "Battery level now: " + mBatteryLevel + "%."); 1499 } else { 1500 return; // continue dreaming 1501 } 1502 } 1503 1504 // Dream has ended or will be stopped. Update the power state. 1505 if (isItBedTimeYetLocked()) { 1506 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1507 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1508 updatePowerStateLocked(); 1509 } else { 1510 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1511 updatePowerStateLocked(); 1512 } 1513 } else if (wakefulness == WAKEFULNESS_DOZING) { 1514 if (isDreaming) { 1515 return; // continue dozing 1516 } 1517 1518 // Doze has ended or will be stopped. Update the power state. 1519 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1520 updatePowerStateLocked(); 1521 } 1522 } 1523 1524 // Stop dream. 1525 if (isDreaming) { 1526 mDreamManager.stopDream(); 1527 } 1528 } 1529 1530 /** 1531 * Returns true if the device is allowed to dream in its current state. 1532 * This function is not called when dozing. 1533 */ 1534 private boolean canDreamLocked() { 1535 if (mWakefulness != WAKEFULNESS_DREAMING 1536 || !mDreamsSupportedConfig 1537 || !mDreamsEnabledSetting 1538 || !mDisplayPowerRequest.wantScreenOnNormal() 1539 || !mBootCompleted) { 1540 return false; 1541 } 1542 if (!isBeingKeptAwakeLocked()) { 1543 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1544 return false; 1545 } 1546 if (!mIsPowered 1547 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1548 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1549 return false; 1550 } 1551 if (mIsPowered 1552 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1553 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1554 return false; 1555 } 1556 } 1557 return true; 1558 } 1559 1560 private void handleScreenOnBlockerReleased() { 1561 synchronized (mLock) { 1562 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1563 updatePowerStateLocked(); 1564 } 1565 } 1566 1567 /** 1568 * Updates the display power state asynchronously. 1569 * When the update is finished, mDisplayReady will be set to true. The display 1570 * controller posts a message to tell us when the actual display power state 1571 * has been updated so we come back here to double-check and finish up. 1572 * 1573 * This function recalculates the display power state each time. 1574 */ 1575 private void updateDisplayPowerStateLocked(int dirty) { 1576 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1577 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1578 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1579 final int newScreenState = getDesiredScreenPowerStateLocked(); 1580 mDisplayPowerRequest.screenState = newScreenState; 1581 1582 int screenBrightness = mScreenBrightnessSettingDefault; 1583 float screenAutoBrightnessAdjustment = 0.0f; 1584 boolean autoBrightness = (mScreenBrightnessModeSetting == 1585 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1586 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1587 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1588 autoBrightness = false; 1589 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1590 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1591 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1592 screenBrightness = mScreenBrightnessSetting; 1593 } 1594 if (autoBrightness) { 1595 screenBrightness = mScreenBrightnessSettingDefault; 1596 if (isValidAutoBrightnessAdjustment( 1597 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1598 screenAutoBrightnessAdjustment = 1599 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1600 } else if (isValidAutoBrightnessAdjustment( 1601 mScreenAutoBrightnessAdjustmentSetting)) { 1602 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1603 } 1604 } 1605 screenBrightness = Math.max(Math.min(screenBrightness, 1606 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1607 screenAutoBrightnessAdjustment = Math.max(Math.min( 1608 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1609 mDisplayPowerRequest.screenBrightness = screenBrightness; 1610 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1611 screenAutoBrightnessAdjustment; 1612 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1613 1614 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1615 1616 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1617 1618 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1619 mRequestWaitForNegativeProximity); 1620 mRequestWaitForNegativeProximity = false; 1621 1622 if (DEBUG_SPEW) { 1623 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1624 + ", newScreenState=" + newScreenState 1625 + ", mWakefulness=" + mWakefulness 1626 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1627 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1628 + ", mBootCompleted=" + mBootCompleted); 1629 } 1630 } 1631 } 1632 1633 private static boolean isValidBrightness(int value) { 1634 return value >= 0 && value <= 255; 1635 } 1636 1637 private static boolean isValidAutoBrightnessAdjustment(float value) { 1638 // Handles NaN by always returning false. 1639 return value >= -1.0f && value <= 1.0f; 1640 } 1641 1642 private int getDesiredScreenPowerStateLocked() { 1643 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1644 return DisplayPowerRequest.SCREEN_STATE_OFF; 1645 } 1646 1647 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1648 return DisplayPowerRequest.SCREEN_STATE_DOZE; 1649 } 1650 1651 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1652 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1653 || !mBootCompleted) { 1654 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1655 } 1656 1657 return DisplayPowerRequest.SCREEN_STATE_DIM; 1658 } 1659 1660 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1661 new DisplayManagerInternal.DisplayPowerCallbacks() { 1662 private int mDisplayState = Display.STATE_UNKNOWN; 1663 1664 @Override 1665 public void onStateChanged() { 1666 synchronized (mLock) { 1667 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1668 updatePowerStateLocked(); 1669 } 1670 } 1671 1672 @Override 1673 public void onProximityPositive() { 1674 synchronized (mLock) { 1675 mProximityPositive = true; 1676 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1677 updatePowerStateLocked(); 1678 } 1679 } 1680 1681 @Override 1682 public void onProximityNegative() { 1683 synchronized (mLock) { 1684 mProximityPositive = false; 1685 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1686 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1687 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1688 updatePowerStateLocked(); 1689 } 1690 } 1691 1692 @Override 1693 public void onDisplayStateChange(int state) { 1694 // This method is only needed to support legacy display blanking behavior 1695 // where the display's power state is coupled to suspend or to the power HAL. 1696 // The order of operations matters here. 1697 synchronized (mLock) { 1698 if (mDisplayState != state) { 1699 mDisplayState = state; 1700 if (state == Display.STATE_OFF) { 1701 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1702 setHalInteractiveModeLocked(false); 1703 } 1704 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1705 setHalAutoSuspendModeLocked(true); 1706 } 1707 } else { 1708 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1709 setHalAutoSuspendModeLocked(false); 1710 } 1711 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1712 setHalInteractiveModeLocked(true); 1713 } 1714 } 1715 } 1716 } 1717 } 1718 1719 @Override 1720 public void acquireSuspendBlocker() { 1721 mDisplaySuspendBlocker.acquire(); 1722 } 1723 1724 @Override 1725 public void releaseSuspendBlocker() { 1726 mDisplaySuspendBlocker.release(); 1727 } 1728 1729 @Override 1730 public String toString() { 1731 synchronized (this) { 1732 return "state=" + Display.stateToString(mDisplayState); 1733 } 1734 } 1735 }; 1736 1737 private boolean shouldUseProximitySensorLocked() { 1738 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1739 } 1740 1741 /** 1742 * Updates the suspend blocker that keeps the CPU alive. 1743 * 1744 * This function must have no other side-effects. 1745 */ 1746 private void updateSuspendBlockerLocked() { 1747 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1748 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1749 final boolean autoSuspend = !needDisplaySuspendBlocker; 1750 1751 // Disable auto-suspend if needed. 1752 if (!autoSuspend) { 1753 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1754 setHalAutoSuspendModeLocked(false); 1755 } 1756 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1757 setHalInteractiveModeLocked(true); 1758 } 1759 } 1760 1761 // First acquire suspend blockers if needed. 1762 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1763 mWakeLockSuspendBlocker.acquire(); 1764 mHoldingWakeLockSuspendBlocker = true; 1765 } 1766 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1767 mDisplaySuspendBlocker.acquire(); 1768 mHoldingDisplaySuspendBlocker = true; 1769 } 1770 1771 // Then release suspend blockers if needed. 1772 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1773 mWakeLockSuspendBlocker.release(); 1774 mHoldingWakeLockSuspendBlocker = false; 1775 } 1776 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1777 mDisplaySuspendBlocker.release(); 1778 mHoldingDisplaySuspendBlocker = false; 1779 } 1780 1781 // Enable auto-suspend if needed. 1782 if (autoSuspend) { 1783 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1784 setHalInteractiveModeLocked(false); 1785 } 1786 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1787 setHalAutoSuspendModeLocked(true); 1788 } 1789 } 1790 } 1791 1792 /** 1793 * Return true if we must keep a suspend blocker active on behalf of the display. 1794 * We do so if the screen is on or is in transition between states. 1795 */ 1796 private boolean needDisplaySuspendBlockerLocked() { 1797 if (!mDisplayReady) { 1798 return true; 1799 } 1800 if (mDisplayPowerRequest.wantScreenOnNormal()) { 1801 // If we asked for the screen to be on but it is off due to the proximity 1802 // sensor then we may suspend but only if the configuration allows it. 1803 // On some hardware it may not be safe to suspend because the proximity 1804 // sensor may not be correctly configured as a wake-up source. 1805 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1806 || !mSuspendWhenScreenOffDueToProximityConfig) { 1807 return true; 1808 } 1809 } 1810 // Let the system suspend if the screen is off or dozing. 1811 return false; 1812 } 1813 1814 private void setHalAutoSuspendModeLocked(boolean enable) { 1815 if (enable != mHalAutoSuspendModeEnabled) { 1816 if (DEBUG) { 1817 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 1818 } 1819 mHalAutoSuspendModeEnabled = enable; 1820 nativeSetAutoSuspend(enable); 1821 } 1822 } 1823 1824 private void setHalInteractiveModeLocked(boolean enable) { 1825 if (enable != mHalInteractiveModeEnabled) { 1826 if (DEBUG) { 1827 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 1828 } 1829 mHalInteractiveModeEnabled = enable; 1830 nativeSetInteractive(enable); 1831 } 1832 } 1833 1834 private boolean isInteractiveInternal() { 1835 synchronized (mLock) { 1836 return mInteractive; 1837 } 1838 } 1839 1840 private void handleBatteryStateChangedLocked() { 1841 mDirty |= DIRTY_BATTERY_STATE; 1842 updatePowerStateLocked(); 1843 } 1844 1845 private void startWatchingForBootAnimationFinished() { 1846 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1847 } 1848 1849 private void checkIfBootAnimationFinished() { 1850 if (DEBUG) { 1851 Slog.d(TAG, "Check if boot animation finished..."); 1852 } 1853 1854 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1855 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1856 BOOT_ANIMATION_POLL_INTERVAL); 1857 return; 1858 } 1859 1860 synchronized (mLock) { 1861 if (!mBootCompleted) { 1862 Slog.i(TAG, "Boot animation finished."); 1863 handleBootCompletedLocked(); 1864 } 1865 } 1866 } 1867 1868 private void handleBootCompletedLocked() { 1869 final long now = SystemClock.uptimeMillis(); 1870 mBootCompleted = true; 1871 mDirty |= DIRTY_BOOT_COMPLETED; 1872 userActivityNoUpdateLocked( 1873 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1874 updatePowerStateLocked(); 1875 } 1876 1877 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1878 final String reason, boolean wait) { 1879 if (mHandler == null || !mSystemReady) { 1880 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1881 } 1882 1883 Runnable runnable = new Runnable() { 1884 @Override 1885 public void run() { 1886 synchronized (this) { 1887 if (shutdown) { 1888 ShutdownThread.shutdown(mContext, confirm); 1889 } else { 1890 ShutdownThread.reboot(mContext, reason, confirm); 1891 } 1892 } 1893 } 1894 }; 1895 1896 // ShutdownThread must run on a looper capable of displaying the UI. 1897 Message msg = Message.obtain(mHandler, runnable); 1898 msg.setAsynchronous(true); 1899 mHandler.sendMessage(msg); 1900 1901 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 1902 if (wait) { 1903 synchronized (runnable) { 1904 while (true) { 1905 try { 1906 runnable.wait(); 1907 } catch (InterruptedException e) { 1908 } 1909 } 1910 } 1911 } 1912 } 1913 1914 private void crashInternal(final String message) { 1915 Thread t = new Thread("PowerManagerService.crash()") { 1916 @Override 1917 public void run() { 1918 throw new RuntimeException(message); 1919 } 1920 }; 1921 try { 1922 t.start(); 1923 t.join(); 1924 } catch (InterruptedException e) { 1925 Log.wtf(TAG, e); 1926 } 1927 } 1928 1929 private void setStayOnSettingInternal(int val) { 1930 Settings.Global.putInt(mContext.getContentResolver(), 1931 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 1932 } 1933 1934 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 1935 synchronized (mLock) { 1936 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 1937 mDirty |= DIRTY_SETTINGS; 1938 updatePowerStateLocked(); 1939 } 1940 } 1941 1942 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 1943 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 1944 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 1945 } 1946 1947 private void setAttentionLightInternal(boolean on, int color) { 1948 Light light; 1949 synchronized (mLock) { 1950 if (!mSystemReady) { 1951 return; 1952 } 1953 light = mAttentionLight; 1954 } 1955 1956 // Control light outside of lock. 1957 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 1958 } 1959 1960 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 1961 synchronized (mLock) { 1962 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 1963 mScreenBrightnessOverrideFromWindowManager = brightness; 1964 mDirty |= DIRTY_SETTINGS; 1965 updatePowerStateLocked(); 1966 } 1967 } 1968 } 1969 1970 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 1971 synchronized (mLock) { 1972 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 1973 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 1974 mDirty |= DIRTY_SETTINGS; 1975 updatePowerStateLocked(); 1976 } 1977 } 1978 } 1979 1980 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 1981 synchronized (mLock) { 1982 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 1983 mTemporaryScreenBrightnessSettingOverride = brightness; 1984 mDirty |= DIRTY_SETTINGS; 1985 updatePowerStateLocked(); 1986 } 1987 } 1988 } 1989 1990 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 1991 synchronized (mLock) { 1992 // Note: This condition handles NaN because NaN is not equal to any other 1993 // value, including itself. 1994 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 1995 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 1996 mDirty |= DIRTY_SETTINGS; 1997 updatePowerStateLocked(); 1998 } 1999 } 2000 } 2001 2002 /** 2003 * Low-level function turn the device off immediately, without trying 2004 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2005 */ 2006 public static void lowLevelShutdown() { 2007 SystemProperties.set("sys.powerctl", "shutdown"); 2008 } 2009 2010 /** 2011 * Low-level function to reboot the device. On success, this function 2012 * doesn't return. If more than 5 seconds passes from the time, 2013 * a reboot is requested, this method returns. 2014 * 2015 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2016 */ 2017 public static void lowLevelReboot(String reason) { 2018 if (reason == null) { 2019 reason = ""; 2020 } 2021 SystemProperties.set("sys.powerctl", "reboot," + reason); 2022 try { 2023 Thread.sleep(20000); 2024 } catch (InterruptedException e) { 2025 Thread.currentThread().interrupt(); 2026 } 2027 } 2028 2029 @Override // Watchdog.Monitor implementation 2030 public void monitor() { 2031 // Grab and release lock for watchdog monitor to detect deadlocks. 2032 synchronized (mLock) { 2033 } 2034 } 2035 2036 private void dumpInternal(PrintWriter pw) { 2037 pw.println("POWER MANAGER (dumpsys power)\n"); 2038 2039 final WirelessChargerDetector wcd; 2040 synchronized (mLock) { 2041 pw.println("Power Manager State:"); 2042 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2043 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2044 pw.println(" mInteractive=" + mInteractive); 2045 pw.println(" mIsPowered=" + mIsPowered); 2046 pw.println(" mPlugType=" + mPlugType); 2047 pw.println(" mBatteryLevel=" + mBatteryLevel); 2048 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2049 pw.println(" mDockState=" + mDockState); 2050 pw.println(" mStayOn=" + mStayOn); 2051 pw.println(" mProximityPositive=" + mProximityPositive); 2052 pw.println(" mBootCompleted=" + mBootCompleted); 2053 pw.println(" mSystemReady=" + mSystemReady); 2054 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2055 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2056 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2057 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2058 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2059 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2060 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2061 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2062 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2063 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2064 pw.println(" mLastUserActivityTimeNoChangeLights=" 2065 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2066 pw.println(" mDisplayReady=" + mDisplayReady); 2067 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2068 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2069 2070 pw.println(); 2071 pw.println("Settings and Configuration:"); 2072 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2073 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2074 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2075 + mDecoupleHalInteractiveModeFromDisplayConfig); 2076 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2077 + mWakeUpWhenPluggedOrUnpluggedConfig); 2078 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2079 + mSuspendWhenScreenOffDueToProximityConfig); 2080 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2081 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2082 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2083 + mDreamsActivatedOnSleepByDefaultConfig); 2084 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2085 + mDreamsActivatedOnDockByDefaultConfig); 2086 pw.println(" mDreamsEnabledOnBatteryConfig=" 2087 + mDreamsEnabledOnBatteryConfig); 2088 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2089 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2090 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2091 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2092 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2093 + mDreamsBatteryLevelDrainCutoffConfig); 2094 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2095 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2096 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2097 pw.println(" mMinimumScreenOffTimeoutConfig=" + mMinimumScreenOffTimeoutConfig); 2098 pw.println(" mMaximumScreenDimDurationConfig=" + mMaximumScreenDimDurationConfig); 2099 pw.println(" mMaximumScreenDimRatioConfig=" + mMaximumScreenDimRatioConfig); 2100 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2101 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2102 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2103 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2104 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2105 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2106 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2107 + mScreenAutoBrightnessAdjustmentSetting); 2108 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2109 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2110 + mScreenBrightnessOverrideFromWindowManager); 2111 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2112 + mUserActivityTimeoutOverrideFromWindowManager); 2113 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2114 + mTemporaryScreenBrightnessSettingOverride); 2115 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2116 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2117 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2118 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2119 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2120 2121 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2122 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2123 pw.println(); 2124 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2125 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2126 2127 pw.println(); 2128 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2129 for (WakeLock wl : mWakeLocks) { 2130 pw.println(" " + wl); 2131 } 2132 2133 pw.println(); 2134 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2135 for (SuspendBlocker sb : mSuspendBlockers) { 2136 pw.println(" " + sb); 2137 } 2138 2139 pw.println(); 2140 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2141 2142 pw.println(); 2143 pw.println("Display Power: " + mDisplayPowerCallbacks); 2144 2145 wcd = mWirelessChargerDetector; 2146 } 2147 2148 if (wcd != null) { 2149 wcd.dump(pw); 2150 } 2151 } 2152 2153 private SuspendBlocker createSuspendBlockerLocked(String name) { 2154 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2155 mSuspendBlockers.add(suspendBlocker); 2156 return suspendBlocker; 2157 } 2158 2159 private static String wakefulnessToString(int wakefulness) { 2160 switch (wakefulness) { 2161 case WAKEFULNESS_ASLEEP: 2162 return "Asleep"; 2163 case WAKEFULNESS_AWAKE: 2164 return "Awake"; 2165 case WAKEFULNESS_DREAMING: 2166 return "Dreaming"; 2167 case WAKEFULNESS_DOZING: 2168 return "Dozing"; 2169 default: 2170 return Integer.toString(wakefulness); 2171 } 2172 } 2173 2174 private static WorkSource copyWorkSource(WorkSource workSource) { 2175 return workSource != null ? new WorkSource(workSource) : null; 2176 } 2177 2178 private final class BatteryReceiver extends BroadcastReceiver { 2179 @Override 2180 public void onReceive(Context context, Intent intent) { 2181 synchronized (mLock) { 2182 handleBatteryStateChangedLocked(); 2183 } 2184 } 2185 } 2186 2187 private final class BootCompletedReceiver extends BroadcastReceiver { 2188 @Override 2189 public void onReceive(Context context, Intent intent) { 2190 // This is our early signal that the system thinks it has finished booting. 2191 // However, the boot animation may still be running for a few more seconds 2192 // since it is ultimately in charge of when it terminates. 2193 // Defer transitioning into the boot completed state until the animation exits. 2194 // We do this so that the screen does not start to dim prematurely before 2195 // the user has actually had a chance to interact with the device. 2196 startWatchingForBootAnimationFinished(); 2197 } 2198 } 2199 2200 private final class DreamReceiver extends BroadcastReceiver { 2201 @Override 2202 public void onReceive(Context context, Intent intent) { 2203 synchronized (mLock) { 2204 scheduleSandmanLocked(); 2205 } 2206 } 2207 } 2208 2209 private final class UserSwitchedReceiver extends BroadcastReceiver { 2210 @Override 2211 public void onReceive(Context context, Intent intent) { 2212 synchronized (mLock) { 2213 handleSettingsChangedLocked(); 2214 } 2215 } 2216 } 2217 2218 private final class DockReceiver extends BroadcastReceiver { 2219 @Override 2220 public void onReceive(Context context, Intent intent) { 2221 synchronized (mLock) { 2222 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2223 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2224 if (mDockState != dockState) { 2225 mDockState = dockState; 2226 mDirty |= DIRTY_DOCK_STATE; 2227 updatePowerStateLocked(); 2228 } 2229 } 2230 } 2231 } 2232 2233 private final class SettingsObserver extends ContentObserver { 2234 public SettingsObserver(Handler handler) { 2235 super(handler); 2236 } 2237 2238 @Override 2239 public void onChange(boolean selfChange, Uri uri) { 2240 synchronized (mLock) { 2241 handleSettingsChangedLocked(); 2242 } 2243 } 2244 } 2245 2246 /** 2247 * Handler for asynchronous operations performed by the power manager. 2248 */ 2249 private final class PowerManagerHandler extends Handler { 2250 public PowerManagerHandler(Looper looper) { 2251 super(looper, null, true /*async*/); 2252 } 2253 2254 @Override 2255 public void handleMessage(Message msg) { 2256 switch (msg.what) { 2257 case MSG_USER_ACTIVITY_TIMEOUT: 2258 handleUserActivityTimeout(); 2259 break; 2260 case MSG_SANDMAN: 2261 handleSandman(); 2262 break; 2263 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2264 handleScreenOnBlockerReleased(); 2265 break; 2266 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2267 checkIfBootAnimationFinished(); 2268 break; 2269 } 2270 } 2271 } 2272 2273 /** 2274 * Represents a wake lock that has been acquired by an application. 2275 */ 2276 private final class WakeLock implements IBinder.DeathRecipient { 2277 public final IBinder mLock; 2278 public int mFlags; 2279 public String mTag; 2280 public final String mPackageName; 2281 public WorkSource mWorkSource; 2282 public final int mOwnerUid; 2283 public final int mOwnerPid; 2284 public boolean mNotifiedAcquired; 2285 2286 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2287 WorkSource workSource, int ownerUid, int ownerPid) { 2288 mLock = lock; 2289 mFlags = flags; 2290 mTag = tag; 2291 mPackageName = packageName; 2292 mWorkSource = copyWorkSource(workSource); 2293 mOwnerUid = ownerUid; 2294 mOwnerPid = ownerPid; 2295 } 2296 2297 @Override 2298 public void binderDied() { 2299 PowerManagerService.this.handleWakeLockDeath(this); 2300 } 2301 2302 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2303 int ownerUid, int ownerPid) { 2304 return mFlags == flags 2305 && mTag.equals(tag) 2306 && hasSameWorkSource(workSource) 2307 && mOwnerUid == ownerUid 2308 && mOwnerPid == ownerPid; 2309 } 2310 2311 public void updateProperties(int flags, String tag, String packageName, 2312 WorkSource workSource, int ownerUid, int ownerPid) { 2313 if (!mPackageName.equals(packageName)) { 2314 throw new IllegalStateException("Existing wake lock package name changed: " 2315 + mPackageName + " to " + packageName); 2316 } 2317 if (mOwnerUid != ownerUid) { 2318 throw new IllegalStateException("Existing wake lock uid changed: " 2319 + mOwnerUid + " to " + ownerUid); 2320 } 2321 if (mOwnerPid != ownerPid) { 2322 throw new IllegalStateException("Existing wake lock pid changed: " 2323 + mOwnerPid + " to " + ownerPid); 2324 } 2325 mFlags = flags; 2326 mTag = tag; 2327 updateWorkSource(workSource); 2328 } 2329 2330 public boolean hasSameWorkSource(WorkSource workSource) { 2331 return Objects.equal(mWorkSource, workSource); 2332 } 2333 2334 public void updateWorkSource(WorkSource workSource) { 2335 mWorkSource = copyWorkSource(workSource); 2336 } 2337 2338 @Override 2339 public String toString() { 2340 return getLockLevelString() 2341 + " '" + mTag + "'" + getLockFlagsString() 2342 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2343 } 2344 2345 @SuppressWarnings("deprecation") 2346 private String getLockLevelString() { 2347 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2348 case PowerManager.FULL_WAKE_LOCK: 2349 return "FULL_WAKE_LOCK "; 2350 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2351 return "SCREEN_BRIGHT_WAKE_LOCK "; 2352 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2353 return "SCREEN_DIM_WAKE_LOCK "; 2354 case PowerManager.PARTIAL_WAKE_LOCK: 2355 return "PARTIAL_WAKE_LOCK "; 2356 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2357 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2358 case PowerManager.DOZE_WAKE_LOCK: 2359 return "DOZE_WAKE_LOCK "; 2360 default: 2361 return "??? "; 2362 } 2363 } 2364 2365 private String getLockFlagsString() { 2366 String result = ""; 2367 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2368 result += " ACQUIRE_CAUSES_WAKEUP"; 2369 } 2370 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2371 result += " ON_AFTER_RELEASE"; 2372 } 2373 return result; 2374 } 2375 } 2376 2377 private final class SuspendBlockerImpl implements SuspendBlocker { 2378 private final String mName; 2379 private int mReferenceCount; 2380 2381 public SuspendBlockerImpl(String name) { 2382 mName = name; 2383 } 2384 2385 @Override 2386 protected void finalize() throws Throwable { 2387 try { 2388 if (mReferenceCount != 0) { 2389 Log.wtf(TAG, "Suspend blocker \"" + mName 2390 + "\" was finalized without being released!"); 2391 mReferenceCount = 0; 2392 nativeReleaseSuspendBlocker(mName); 2393 } 2394 } finally { 2395 super.finalize(); 2396 } 2397 } 2398 2399 @Override 2400 public void acquire() { 2401 synchronized (this) { 2402 mReferenceCount += 1; 2403 if (mReferenceCount == 1) { 2404 if (DEBUG_SPEW) { 2405 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2406 } 2407 nativeAcquireSuspendBlocker(mName); 2408 } 2409 } 2410 } 2411 2412 @Override 2413 public void release() { 2414 synchronized (this) { 2415 mReferenceCount -= 1; 2416 if (mReferenceCount == 0) { 2417 if (DEBUG_SPEW) { 2418 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2419 } 2420 nativeReleaseSuspendBlocker(mName); 2421 } else if (mReferenceCount < 0) { 2422 Log.wtf(TAG, "Suspend blocker \"" + mName 2423 + "\" was released without being acquired!", new Throwable()); 2424 mReferenceCount = 0; 2425 } 2426 } 2427 } 2428 2429 @Override 2430 public String toString() { 2431 synchronized (this) { 2432 return mName + ": ref count=" + mReferenceCount; 2433 } 2434 } 2435 } 2436 2437 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2438 private int mNestCount; 2439 2440 public boolean isHeld() { 2441 synchronized (this) { 2442 return mNestCount != 0; 2443 } 2444 } 2445 2446 @Override 2447 public void acquire() { 2448 synchronized (this) { 2449 mNestCount += 1; 2450 if (DEBUG) { 2451 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2452 } 2453 } 2454 } 2455 2456 @Override 2457 public void release() { 2458 synchronized (this) { 2459 mNestCount -= 1; 2460 if (mNestCount < 0) { 2461 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2462 new Throwable()); 2463 mNestCount = 0; 2464 } 2465 if (mNestCount == 0) { 2466 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2467 } 2468 if (DEBUG) { 2469 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2470 } 2471 } 2472 } 2473 2474 @Override 2475 public String toString() { 2476 synchronized (this) { 2477 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2478 } 2479 } 2480 } 2481 2482 private final class BinderService extends IPowerManager.Stub { 2483 @Override // Binder call 2484 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2485 String packageName, int uid) { 2486 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid)); 2487 } 2488 2489 @Override // Binder call 2490 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2491 WorkSource ws) { 2492 if (lock == null) { 2493 throw new IllegalArgumentException("lock must not be null"); 2494 } 2495 if (packageName == null) { 2496 throw new IllegalArgumentException("packageName must not be null"); 2497 } 2498 PowerManager.validateWakeLockParameters(flags, tag); 2499 2500 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2501 if (ws != null && ws.size() != 0) { 2502 mContext.enforceCallingOrSelfPermission( 2503 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2504 } else { 2505 ws = null; 2506 } 2507 2508 final int uid = Binder.getCallingUid(); 2509 final int pid = Binder.getCallingPid(); 2510 final long ident = Binder.clearCallingIdentity(); 2511 try { 2512 acquireWakeLockInternal(lock, flags, tag, packageName, ws, uid, pid); 2513 } finally { 2514 Binder.restoreCallingIdentity(ident); 2515 } 2516 } 2517 2518 @Override // Binder call 2519 public void releaseWakeLock(IBinder lock, int flags) { 2520 if (lock == null) { 2521 throw new IllegalArgumentException("lock must not be null"); 2522 } 2523 2524 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2525 2526 final long ident = Binder.clearCallingIdentity(); 2527 try { 2528 releaseWakeLockInternal(lock, flags); 2529 } finally { 2530 Binder.restoreCallingIdentity(ident); 2531 } 2532 } 2533 2534 @Override // Binder call 2535 public void updateWakeLockUids(IBinder lock, int[] uids) { 2536 WorkSource ws = null; 2537 2538 if (uids != null) { 2539 ws = new WorkSource(); 2540 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2541 // one at a time? 2542 for (int i = 0; i < uids.length; i++) { 2543 ws.add(uids[i]); 2544 } 2545 } 2546 updateWakeLockWorkSource(lock, ws); 2547 } 2548 2549 @Override // Binder call 2550 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws) { 2551 if (lock == null) { 2552 throw new IllegalArgumentException("lock must not be null"); 2553 } 2554 2555 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2556 if (ws != null && ws.size() != 0) { 2557 mContext.enforceCallingOrSelfPermission( 2558 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2559 } else { 2560 ws = null; 2561 } 2562 2563 final long ident = Binder.clearCallingIdentity(); 2564 try { 2565 updateWakeLockWorkSourceInternal(lock, ws); 2566 } finally { 2567 Binder.restoreCallingIdentity(ident); 2568 } 2569 } 2570 2571 @Override // Binder call 2572 public boolean isWakeLockLevelSupported(int level) { 2573 final long ident = Binder.clearCallingIdentity(); 2574 try { 2575 return isWakeLockLevelSupportedInternal(level); 2576 } finally { 2577 Binder.restoreCallingIdentity(ident); 2578 } 2579 } 2580 2581 @Override // Binder call 2582 public void userActivity(long eventTime, int event, int flags) { 2583 final long now = SystemClock.uptimeMillis(); 2584 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2585 != PackageManager.PERMISSION_GRANTED) { 2586 // Once upon a time applications could call userActivity(). 2587 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2588 // request instead of throwing a SecurityException so we don't break old apps. 2589 synchronized (mLock) { 2590 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2591 mLastWarningAboutUserActivityPermission = now; 2592 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2593 + "caller does not have DEVICE_POWER permission. " 2594 + "Please fix your app! " 2595 + " pid=" + Binder.getCallingPid() 2596 + " uid=" + Binder.getCallingUid()); 2597 } 2598 } 2599 return; 2600 } 2601 2602 if (eventTime > SystemClock.uptimeMillis()) { 2603 throw new IllegalArgumentException("event time must not be in the future"); 2604 } 2605 2606 final int uid = Binder.getCallingUid(); 2607 final long ident = Binder.clearCallingIdentity(); 2608 try { 2609 userActivityInternal(eventTime, event, flags, uid); 2610 } finally { 2611 Binder.restoreCallingIdentity(ident); 2612 } 2613 } 2614 2615 @Override // Binder call 2616 public void wakeUp(long eventTime) { 2617 if (eventTime > SystemClock.uptimeMillis()) { 2618 throw new IllegalArgumentException("event time must not be in the future"); 2619 } 2620 2621 mContext.enforceCallingOrSelfPermission( 2622 android.Manifest.permission.DEVICE_POWER, null); 2623 2624 final long ident = Binder.clearCallingIdentity(); 2625 try { 2626 wakeUpInternal(eventTime); 2627 } finally { 2628 Binder.restoreCallingIdentity(ident); 2629 } 2630 } 2631 2632 @Override // Binder call 2633 public void goToSleep(long eventTime, int reason) { 2634 if (eventTime > SystemClock.uptimeMillis()) { 2635 throw new IllegalArgumentException("event time must not be in the future"); 2636 } 2637 2638 mContext.enforceCallingOrSelfPermission( 2639 android.Manifest.permission.DEVICE_POWER, null); 2640 2641 final long ident = Binder.clearCallingIdentity(); 2642 try { 2643 goToSleepInternal(eventTime, reason); 2644 } finally { 2645 Binder.restoreCallingIdentity(ident); 2646 } 2647 } 2648 2649 @Override // Binder call 2650 public void nap(long eventTime) { 2651 if (eventTime > SystemClock.uptimeMillis()) { 2652 throw new IllegalArgumentException("event time must not be in the future"); 2653 } 2654 2655 mContext.enforceCallingOrSelfPermission( 2656 android.Manifest.permission.DEVICE_POWER, null); 2657 2658 final long ident = Binder.clearCallingIdentity(); 2659 try { 2660 napInternal(eventTime); 2661 } finally { 2662 Binder.restoreCallingIdentity(ident); 2663 } 2664 } 2665 2666 @Override // Binder call 2667 public boolean isInteractive() { 2668 final long ident = Binder.clearCallingIdentity(); 2669 try { 2670 return isInteractiveInternal(); 2671 } finally { 2672 Binder.restoreCallingIdentity(ident); 2673 } 2674 } 2675 2676 /** 2677 * Reboots the device. 2678 * 2679 * @param confirm If true, shows a reboot confirmation dialog. 2680 * @param reason The reason for the reboot, or null if none. 2681 * @param wait If true, this call waits for the reboot to complete and does not return. 2682 */ 2683 @Override // Binder call 2684 public void reboot(boolean confirm, String reason, boolean wait) { 2685 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2686 2687 final long ident = Binder.clearCallingIdentity(); 2688 try { 2689 shutdownOrRebootInternal(false, confirm, reason, wait); 2690 } finally { 2691 Binder.restoreCallingIdentity(ident); 2692 } 2693 } 2694 2695 /** 2696 * Shuts down the device. 2697 * 2698 * @param confirm If true, shows a shutdown confirmation dialog. 2699 * @param wait If true, this call waits for the shutdown to complete and does not return. 2700 */ 2701 @Override // Binder call 2702 public void shutdown(boolean confirm, boolean wait) { 2703 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2704 2705 final long ident = Binder.clearCallingIdentity(); 2706 try { 2707 shutdownOrRebootInternal(true, confirm, null, wait); 2708 } finally { 2709 Binder.restoreCallingIdentity(ident); 2710 } 2711 } 2712 2713 /** 2714 * Crash the runtime (causing a complete restart of the Android framework). 2715 * Requires REBOOT permission. Mostly for testing. Should not return. 2716 */ 2717 @Override // Binder call 2718 public void crash(String message) { 2719 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2720 2721 final long ident = Binder.clearCallingIdentity(); 2722 try { 2723 crashInternal(message); 2724 } finally { 2725 Binder.restoreCallingIdentity(ident); 2726 } 2727 } 2728 2729 /** 2730 * Set the setting that determines whether the device stays on when plugged in. 2731 * The argument is a bit string, with each bit specifying a power source that, 2732 * when the device is connected to that source, causes the device to stay on. 2733 * See {@link android.os.BatteryManager} for the list of power sources that 2734 * can be specified. Current values include 2735 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2736 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2737 * 2738 * Used by "adb shell svc power stayon ..." 2739 * 2740 * @param val an {@code int} containing the bits that specify which power sources 2741 * should cause the device to stay on. 2742 */ 2743 @Override // Binder call 2744 public void setStayOnSetting(int val) { 2745 mContext.enforceCallingOrSelfPermission( 2746 android.Manifest.permission.WRITE_SETTINGS, null); 2747 2748 final long ident = Binder.clearCallingIdentity(); 2749 try { 2750 setStayOnSettingInternal(val); 2751 } finally { 2752 Binder.restoreCallingIdentity(ident); 2753 } 2754 } 2755 2756 /** 2757 * Used by device administration to set the maximum screen off timeout. 2758 * 2759 * This method must only be called by the device administration policy manager. 2760 */ 2761 @Override // Binder call 2762 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2763 final long ident = Binder.clearCallingIdentity(); 2764 try { 2765 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2766 } finally { 2767 Binder.restoreCallingIdentity(ident); 2768 } 2769 } 2770 2771 /** 2772 * Used by the settings application and brightness control widgets to 2773 * temporarily override the current screen brightness setting so that the 2774 * user can observe the effect of an intended settings change without applying 2775 * it immediately. 2776 * 2777 * The override will be canceled when the setting value is next updated. 2778 * 2779 * @param brightness The overridden brightness. 2780 * 2781 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2782 */ 2783 @Override // Binder call 2784 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2785 mContext.enforceCallingOrSelfPermission( 2786 android.Manifest.permission.DEVICE_POWER, null); 2787 2788 final long ident = Binder.clearCallingIdentity(); 2789 try { 2790 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2791 } finally { 2792 Binder.restoreCallingIdentity(ident); 2793 } 2794 } 2795 2796 /** 2797 * Used by the settings application and brightness control widgets to 2798 * temporarily override the current screen auto-brightness adjustment setting so that the 2799 * user can observe the effect of an intended settings change without applying 2800 * it immediately. 2801 * 2802 * The override will be canceled when the setting value is next updated. 2803 * 2804 * @param adj The overridden brightness, or Float.NaN to disable the override. 2805 * 2806 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2807 */ 2808 @Override // Binder call 2809 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2810 mContext.enforceCallingOrSelfPermission( 2811 android.Manifest.permission.DEVICE_POWER, null); 2812 2813 final long ident = Binder.clearCallingIdentity(); 2814 try { 2815 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2816 } finally { 2817 Binder.restoreCallingIdentity(ident); 2818 } 2819 } 2820 2821 /** 2822 * Used by the phone application to make the attention LED flash when ringing. 2823 */ 2824 @Override // Binder call 2825 public void setAttentionLight(boolean on, int color) { 2826 mContext.enforceCallingOrSelfPermission( 2827 android.Manifest.permission.DEVICE_POWER, null); 2828 2829 final long ident = Binder.clearCallingIdentity(); 2830 try { 2831 setAttentionLightInternal(on, color); 2832 } finally { 2833 Binder.restoreCallingIdentity(ident); 2834 } 2835 } 2836 2837 @Override // Binder call 2838 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2839 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2840 != PackageManager.PERMISSION_GRANTED) { 2841 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2842 + Binder.getCallingPid() 2843 + ", uid=" + Binder.getCallingUid()); 2844 return; 2845 } 2846 2847 final long ident = Binder.clearCallingIdentity(); 2848 try { 2849 dumpInternal(pw); 2850 } finally { 2851 Binder.restoreCallingIdentity(ident); 2852 } 2853 } 2854 } 2855 2856 private final class LocalService extends PowerManagerInternal { 2857 /** 2858 * Used by the window manager to override the screen brightness based on the 2859 * current foreground activity. 2860 * 2861 * This method must only be called by the window manager. 2862 * 2863 * @param brightness The overridden brightness, or -1 to disable the override. 2864 */ 2865 @Override 2866 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 2867 mContext.enforceCallingOrSelfPermission( 2868 android.Manifest.permission.DEVICE_POWER, null); 2869 2870 final long ident = Binder.clearCallingIdentity(); 2871 try { 2872 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 2873 } finally { 2874 Binder.restoreCallingIdentity(ident); 2875 } 2876 } 2877 2878 /** 2879 * Used by the window manager to override the button brightness based on the 2880 * current foreground activity. 2881 * 2882 * This method must only be called by the window manager. 2883 * 2884 * @param brightness The overridden brightness, or -1 to disable the override. 2885 */ 2886 @Override 2887 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 2888 // Do nothing. 2889 // Button lights are not currently supported in the new implementation. 2890 mContext.enforceCallingOrSelfPermission( 2891 android.Manifest.permission.DEVICE_POWER, null); 2892 } 2893 2894 /** 2895 * Used by the window manager to override the user activity timeout based on the 2896 * current foreground activity. It can only be used to make the timeout shorter 2897 * than usual, not longer. 2898 * 2899 * This method must only be called by the window manager. 2900 * 2901 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 2902 */ 2903 @Override 2904 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 2905 mContext.enforceCallingOrSelfPermission( 2906 android.Manifest.permission.DEVICE_POWER, null); 2907 2908 final long ident = Binder.clearCallingIdentity(); 2909 try { 2910 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 2911 } finally { 2912 Binder.restoreCallingIdentity(ident); 2913 } 2914 } 2915 2916 @Override 2917 public void setPolicy(WindowManagerPolicy policy) { 2918 PowerManagerService.this.setPolicy(policy); 2919 } 2920 } 2921} 2922