PowerManagerService.java revision 2d8a3908d2b0a74ccdecd97e86e7bfda1caa218e
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.twilight.TwilightManager; 28import com.android.server.Watchdog; 29 30import android.Manifest; 31import android.content.BroadcastReceiver; 32import android.content.ContentResolver; 33import android.content.Context; 34import android.content.Intent; 35import android.content.IntentFilter; 36import android.content.pm.PackageManager; 37import android.content.res.Resources; 38import android.database.ContentObserver; 39import android.hardware.SensorManager; 40import android.hardware.SystemSensorManager; 41import android.hardware.display.DisplayManagerInternal; 42import android.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.WindowManagerPolicy; 66 67import java.io.FileDescriptor; 68import java.io.PrintWriter; 69import java.util.ArrayList; 70 71import libcore.util.Objects; 72 73/** 74 * The power manager service is responsible for coordinating power management 75 * functions on the device. 76 */ 77public final class PowerManagerService extends com.android.server.SystemService 78 implements Watchdog.Monitor { 79 private static final String TAG = "PowerManagerService"; 80 81 private static final boolean DEBUG = false; 82 private static final boolean DEBUG_SPEW = DEBUG && true; 83 84 // Message: Sent when a user activity timeout occurs to update the power state. 85 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 86 // Message: Sent when the device enters or exits a dreaming or dozing state. 87 private static final int MSG_SANDMAN = 2; 88 // Message: Sent when the screen on blocker is released. 89 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 90 // Message: Sent to poll whether the boot animation has terminated. 91 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 92 93 // Dirty bit: mWakeLocks changed 94 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 95 // Dirty bit: mWakefulness changed 96 private static final int DIRTY_WAKEFULNESS = 1 << 1; 97 // Dirty bit: user activity was poked or may have timed out 98 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 99 // Dirty bit: actual display power state was updated asynchronously 100 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 101 // Dirty bit: mBootCompleted changed 102 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 103 // Dirty bit: settings changed 104 private static final int DIRTY_SETTINGS = 1 << 5; 105 // Dirty bit: mIsPowered changed 106 private static final int DIRTY_IS_POWERED = 1 << 6; 107 // Dirty bit: mStayOn changed 108 private static final int DIRTY_STAY_ON = 1 << 7; 109 // Dirty bit: battery state changed 110 private static final int DIRTY_BATTERY_STATE = 1 << 8; 111 // Dirty bit: proximity state changed 112 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 113 // Dirty bit: screen on blocker state became held or unheld 114 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 115 // Dirty bit: dock state changed 116 private static final int DIRTY_DOCK_STATE = 1 << 11; 117 118 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 119 // The screen should be off or in the process of being turned off by the display controller. 120 // The device typically passes through the dozing state first. 121 private static final int WAKEFULNESS_ASLEEP = 0; 122 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 123 // When the user activity timeout expires, the device may start dreaming or go to sleep. 124 private static final int WAKEFULNESS_AWAKE = 1; 125 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 126 // which ends the dream. The device goes to sleep when goToSleep() is called, when 127 // the dream ends or when unplugged. 128 // User activity may brighten the screen but does not end the dream. 129 private static final int WAKEFULNESS_DREAMING = 2; 130 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 131 // low-power "doze" dream to run which keeps the display on but lets the application 132 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 133 // The device fully goes to sleep if the dream cannot be started or ends on its own. 134 private static final int WAKEFULNESS_DOZING = 3; 135 136 // Summarizes the state of all active wakelocks. 137 private static final int WAKE_LOCK_CPU = 1 << 0; 138 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 139 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 140 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 141 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 142 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 143 private static final int WAKE_LOCK_DOZE = 1 << 6; 144 145 // Summarizes the user activity state. 146 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 147 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 148 149 // Default and minimum screen off timeout in milliseconds. 150 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 151 private static final int MINIMUM_SCREEN_OFF_TIMEOUT = 10 * 1000; 152 153 // The screen dim duration, in milliseconds. 154 // This is subtracted from the end of the screen off timeout so the 155 // minimum screen off timeout should be longer than this. 156 private static final int SCREEN_DIM_DURATION = 7 * 1000; 157 158 // The maximum screen dim time expressed as a ratio relative to the screen 159 // off timeout. If the screen off timeout is very short then we want the 160 // dim timeout to also be quite short so that most of the time is spent on. 161 // Otherwise the user won't get much screen on time before dimming occurs. 162 private static final float MAXIMUM_SCREEN_DIM_RATIO = 0.2f; 163 164 // The name of the boot animation service in init.rc. 165 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 166 167 // Poll interval in milliseconds for watching boot animation finished. 168 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 169 170 private final Context mContext; 171 private LightsManager mLightsManager; 172 private BatteryService mBatteryService; 173 private DisplayManagerInternal mDisplayManagerInternal; 174 private IBatteryStats mBatteryStats; 175 private IAppOpsService mAppOps; 176 private ServiceThread mHandlerThread; 177 private PowerManagerHandler mHandler; 178 private WindowManagerPolicy mPolicy; 179 private Notifier mNotifier; 180 private DisplayPowerController mDisplayPowerController; 181 private WirelessChargerDetector mWirelessChargerDetector; 182 private SettingsObserver mSettingsObserver; 183 private DreamManagerInternal mDreamManager; 184 private Light mAttentionLight; 185 186 private final Object mLock = new Object(); 187 188 // A bitfield that indicates what parts of the power state have 189 // changed and need to be recalculated. 190 private int mDirty; 191 192 // Indicates whether the device is awake or asleep or somewhere in between. 193 // This is distinct from the screen power state, which is managed separately. 194 private int mWakefulness; 195 196 // True if the sandman has just been summoned for the first time since entering the 197 // dreaming or dozing state. Indicates whether a new dream should begin. 198 private boolean mSandmanSummoned; 199 200 // True if MSG_SANDMAN has been scheduled. 201 private boolean mSandmanScheduled; 202 203 // Table of all suspend blockers. 204 // There should only be a few of these. 205 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 206 207 // Table of all wake locks acquired by applications. 208 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 209 210 // A bitfield that summarizes the state of all active wakelocks. 211 private int mWakeLockSummary; 212 213 // If true, instructs the display controller to wait for the proximity sensor to 214 // go negative before turning the screen on. 215 private boolean mRequestWaitForNegativeProximity; 216 217 // Timestamp of the last time the device was awoken or put to sleep. 218 private long mLastWakeTime; 219 private long mLastSleepTime; 220 221 // True if we need to send a wake up or go to sleep finished notification 222 // when the display is ready. 223 private boolean mSendWakeUpFinishedNotificationWhenReady; 224 private boolean mSendGoToSleepFinishedNotificationWhenReady; 225 226 // Timestamp of the last call to user activity. 227 private long mLastUserActivityTime; 228 private long mLastUserActivityTimeNoChangeLights; 229 230 // A bitfield that summarizes the effect of the user activity timer. 231 // A zero value indicates that the user activity timer has expired. 232 private int mUserActivitySummary; 233 234 // The desired display power state. The actual state may lag behind the 235 // requested because it is updated asynchronously by the display power controller. 236 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 237 238 // True if the display power state has been fully applied, which means the display 239 // is actually on or actually off or whatever was requested. 240 private boolean mDisplayReady; 241 242 // The suspend blocker used to keep the CPU alive when an application has acquired 243 // a wake lock. 244 private final SuspendBlocker mWakeLockSuspendBlocker; 245 246 // True if the wake lock suspend blocker has been acquired. 247 private boolean mHoldingWakeLockSuspendBlocker; 248 249 // The suspend blocker used to keep the CPU alive when the display is on, the 250 // display is getting ready or there is user activity (in which case the display 251 // must be on). 252 private final SuspendBlocker mDisplaySuspendBlocker; 253 254 // True if the display suspend blocker has been acquired. 255 private boolean mHoldingDisplaySuspendBlocker; 256 257 // The screen on blocker used to keep the screen from turning on while the lock 258 // screen is coming up. 259 private final ScreenOnBlockerImpl mScreenOnBlocker; 260 261 // The display blanker used to turn the screen on or off. 262 private final DisplayBlankerImpl mDisplayBlanker; 263 264 // True if systemReady() has been called. 265 private boolean mSystemReady; 266 267 // True if boot completed occurred. We keep the screen on until this happens. 268 private boolean mBootCompleted; 269 270 // True if auto-suspend mode is enabled. 271 // Refer to autosuspend.h. 272 private boolean mAutoSuspendModeEnabled; 273 274 // True if interactive mode is enabled. 275 // Refer to power.h. 276 private boolean mInteractiveModeEnabled; 277 278 // True if the device is plugged into a power source. 279 private boolean mIsPowered; 280 281 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 282 private int mPlugType; 283 284 // The current battery level percentage. 285 private int mBatteryLevel; 286 287 // The battery level percentage at the time the dream started. 288 // This is used to terminate a dream and go to sleep if the battery is 289 // draining faster than it is charging and the user activity timeout has expired. 290 private int mBatteryLevelWhenDreamStarted; 291 292 // The current dock state. 293 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 294 295 // True to decouple auto-suspend mode from the display state. 296 private boolean mDecoupleAutoSuspendModeFromDisplayConfig; 297 298 // True to decouple interactive mode from the display state. 299 private boolean mDecoupleInteractiveModeFromDisplayConfig; 300 301 // True if the device should wake up when plugged or unplugged. 302 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 303 304 // True if the device should suspend when the screen is off due to proximity. 305 private boolean mSuspendWhenScreenOffDueToProximityConfig; 306 307 // True if dreams are supported on this device. 308 private boolean mDreamsSupportedConfig; 309 310 // Default value for dreams enabled 311 private boolean mDreamsEnabledByDefaultConfig; 312 313 // Default value for dreams activate-on-sleep 314 private boolean mDreamsActivatedOnSleepByDefaultConfig; 315 316 // Default value for dreams activate-on-dock 317 private boolean mDreamsActivatedOnDockByDefaultConfig; 318 319 // True if dreams can run while not plugged in. 320 private boolean mDreamsEnabledOnBatteryConfig; 321 322 // Minimum battery level to allow dreaming when powered. 323 // Use -1 to disable this safety feature. 324 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 325 326 // Minimum battery level to allow dreaming when not powered. 327 // Use -1 to disable this safety feature. 328 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 329 330 // If the battery level drops by this percentage and the user activity timeout 331 // has expired, then assume the device is receiving insufficient current to charge 332 // effectively and terminate the dream. Use -1 to disable this safety feature. 333 private int mDreamsBatteryLevelDrainCutoffConfig; 334 335 // True if dreams are enabled by the user. 336 private boolean mDreamsEnabledSetting; 337 338 // True if dreams should be activated on sleep. 339 private boolean mDreamsActivateOnSleepSetting; 340 341 // True if dreams should be activated on dock. 342 private boolean mDreamsActivateOnDockSetting; 343 344 // The screen off timeout setting value in milliseconds. 345 private int mScreenOffTimeoutSetting; 346 347 // The maximum allowable screen off timeout according to the device 348 // administration policy. Overrides other settings. 349 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 350 351 // The stay on while plugged in setting. 352 // A bitfield of battery conditions under which to make the screen stay on. 353 private int mStayOnWhilePluggedInSetting; 354 355 // True if the device should stay on. 356 private boolean mStayOn; 357 358 // True if the proximity sensor reads a positive result. 359 private boolean mProximityPositive; 360 361 // Screen brightness setting limits. 362 private int mScreenBrightnessSettingMinimum; 363 private int mScreenBrightnessSettingMaximum; 364 private int mScreenBrightnessSettingDefault; 365 366 // The screen brightness setting, from 0 to 255. 367 // Use -1 if no value has been set. 368 private int mScreenBrightnessSetting; 369 370 // The screen auto-brightness adjustment setting, from -1 to 1. 371 // Use 0 if there is no adjustment. 372 private float mScreenAutoBrightnessAdjustmentSetting; 373 374 // The screen brightness mode. 375 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 376 private int mScreenBrightnessModeSetting; 377 378 // The screen brightness setting override from the window manager 379 // to allow the current foreground activity to override the brightness. 380 // Use -1 to disable. 381 private int mScreenBrightnessOverrideFromWindowManager = -1; 382 383 // The user activity timeout override from the window manager 384 // to allow the current foreground activity to override the user activity timeout. 385 // Use -1 to disable. 386 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 387 388 // The screen brightness setting override from the settings application 389 // to temporarily adjust the brightness until next updated, 390 // Use -1 to disable. 391 private int mTemporaryScreenBrightnessSettingOverride = -1; 392 393 // The screen brightness adjustment setting override from the settings 394 // application to temporarily adjust the auto-brightness adjustment factor 395 // until next updated, in the range -1..1. 396 // Use NaN to disable. 397 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 398 399 // Time when we last logged a warning about calling userActivity() without permission. 400 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 401 402 private native void nativeInit(); 403 404 private static native void nativeSetPowerState(boolean screenOn, boolean screenBright); 405 private static native void nativeAcquireSuspendBlocker(String name); 406 private static native void nativeReleaseSuspendBlocker(String name); 407 private static native void nativeSetInteractive(boolean enable); 408 private static native void nativeSetAutoSuspend(boolean enable); 409 410 public PowerManagerService(Context context) { 411 super(context); 412 mContext = context; 413 synchronized (mLock) { 414 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 415 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 416 mDisplaySuspendBlocker.acquire(); 417 mHoldingDisplaySuspendBlocker = true; 418 419 mScreenOnBlocker = new ScreenOnBlockerImpl(); 420 mDisplayBlanker = new DisplayBlankerImpl(); 421 mWakefulness = WAKEFULNESS_AWAKE; 422 } 423 424 nativeInit(); 425 nativeSetPowerState(true, true); 426 } 427 428 @Override 429 public void onStart() { 430 publishBinderService(Context.POWER_SERVICE, new BinderService()); 431 publishLocalService(PowerManagerInternal.class, new LocalService()); 432 } 433 434 /** 435 * Initialize the power manager. 436 * Must be called before any other functions within the power manager are called. 437 */ 438 public void init(LightsManager ls, 439 BatteryService bs, IBatteryStats bss, 440 IAppOpsService appOps) { 441 mLightsManager = ls; 442 mBatteryService = bs; 443 mBatteryStats = bss; 444 mAppOps = appOps; 445 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 446 mHandlerThread = new ServiceThread(TAG, 447 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 448 mHandlerThread.start(); 449 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 450 451 Watchdog.getInstance().addMonitor(this); 452 Watchdog.getInstance().addThread(mHandler); 453 454 // Forcibly turn the screen on at boot so that it is in a known power state. 455 // We do this in init() rather than in the constructor because setting the 456 // screen state requires a call into surface flinger which then needs to call back 457 // into the activity manager to check permissions. Unfortunately the 458 // activity manager is not running when the constructor is called, so we 459 // have to defer setting the screen state until this point. 460 mDisplayBlanker.unblankAllDisplays(); 461 } 462 463 void setPolicy(WindowManagerPolicy policy) { 464 synchronized (mLock) { 465 mPolicy = policy; 466 } 467 } 468 469 public void systemReady() { 470 synchronized (mLock) { 471 mSystemReady = true; 472 mDreamManager = LocalServices.getService(DreamManagerInternal.class); 473 474 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 475 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 476 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 477 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 478 479 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 480 481 // The notifier runs on the system server's main looper so as not to interfere 482 // with the animations and other critical functions of the power manager. 483 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 484 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 485 mScreenOnBlocker, mPolicy); 486 487 // The display power controller runs on the power manager service's 488 // own handler thread to ensure timely operation. 489 mDisplayPowerController = new DisplayPowerController(mHandler.getLooper(), 490 mContext, mNotifier, mLightsManager, 491 LocalServices.getService(TwilightManager.class), sensorManager, 492 mDisplaySuspendBlocker, mDisplayBlanker, 493 mDisplayPowerControllerCallbacks, mHandler); 494 495 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 496 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 497 mHandler); 498 mSettingsObserver = new SettingsObserver(mHandler); 499 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 500 501 // Register for broadcasts from other components of the system. 502 IntentFilter filter = new IntentFilter(); 503 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 504 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 505 506 filter = new IntentFilter(); 507 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 508 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 509 510 filter = new IntentFilter(); 511 filter.addAction(Intent.ACTION_DREAMING_STARTED); 512 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 513 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 514 515 filter = new IntentFilter(); 516 filter.addAction(Intent.ACTION_USER_SWITCHED); 517 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 518 519 filter = new IntentFilter(); 520 filter.addAction(Intent.ACTION_DOCK_EVENT); 521 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 522 523 // Register for settings changes. 524 final ContentResolver resolver = mContext.getContentResolver(); 525 resolver.registerContentObserver(Settings.Secure.getUriFor( 526 Settings.Secure.SCREENSAVER_ENABLED), 527 false, mSettingsObserver, UserHandle.USER_ALL); 528 resolver.registerContentObserver(Settings.Secure.getUriFor( 529 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 530 false, mSettingsObserver, UserHandle.USER_ALL); 531 resolver.registerContentObserver(Settings.Secure.getUriFor( 532 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 533 false, mSettingsObserver, UserHandle.USER_ALL); 534 resolver.registerContentObserver(Settings.System.getUriFor( 535 Settings.System.SCREEN_OFF_TIMEOUT), 536 false, mSettingsObserver, UserHandle.USER_ALL); 537 resolver.registerContentObserver(Settings.Global.getUriFor( 538 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 539 false, mSettingsObserver, UserHandle.USER_ALL); 540 resolver.registerContentObserver(Settings.System.getUriFor( 541 Settings.System.SCREEN_BRIGHTNESS), 542 false, mSettingsObserver, UserHandle.USER_ALL); 543 resolver.registerContentObserver(Settings.System.getUriFor( 544 Settings.System.SCREEN_BRIGHTNESS_MODE), 545 false, mSettingsObserver, UserHandle.USER_ALL); 546 547 // Go. 548 readConfigurationLocked(); 549 updateSettingsLocked(); 550 mDirty |= DIRTY_BATTERY_STATE; 551 updatePowerStateLocked(); 552 } 553 } 554 555 private void readConfigurationLocked() { 556 final Resources resources = mContext.getResources(); 557 558 mDecoupleAutoSuspendModeFromDisplayConfig = resources.getBoolean( 559 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 560 mDecoupleInteractiveModeFromDisplayConfig = resources.getBoolean( 561 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 562 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 563 com.android.internal.R.bool.config_unplugTurnsOnScreen); 564 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 565 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 566 mDreamsSupportedConfig = resources.getBoolean( 567 com.android.internal.R.bool.config_dreamsSupported); 568 mDreamsEnabledByDefaultConfig = resources.getBoolean( 569 com.android.internal.R.bool.config_dreamsEnabledByDefault); 570 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 571 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 572 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 573 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 574 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 575 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 576 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 577 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 578 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 579 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 580 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 581 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 582 } 583 584 private void updateSettingsLocked() { 585 final ContentResolver resolver = mContext.getContentResolver(); 586 587 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 588 Settings.Secure.SCREENSAVER_ENABLED, 589 mDreamsEnabledByDefaultConfig ? 1 : 0, 590 UserHandle.USER_CURRENT) != 0); 591 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 592 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 593 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 594 UserHandle.USER_CURRENT) != 0); 595 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 596 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 597 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 598 UserHandle.USER_CURRENT) != 0); 599 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 600 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 601 UserHandle.USER_CURRENT); 602 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 603 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 604 605 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 606 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 607 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 608 UserHandle.USER_CURRENT); 609 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 610 mTemporaryScreenBrightnessSettingOverride = -1; 611 } 612 613 final float oldScreenAutoBrightnessAdjustmentSetting = 614 mScreenAutoBrightnessAdjustmentSetting; 615 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 616 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 617 UserHandle.USER_CURRENT); 618 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 619 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 620 } 621 622 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 623 Settings.System.SCREEN_BRIGHTNESS_MODE, 624 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 625 626 mDirty |= DIRTY_SETTINGS; 627 } 628 629 private void handleSettingsChangedLocked() { 630 updateSettingsLocked(); 631 updatePowerStateLocked(); 632 } 633 634 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 635 WorkSource ws, int uid, int pid) { 636 synchronized (mLock) { 637 if (DEBUG_SPEW) { 638 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 639 + ", flags=0x" + Integer.toHexString(flags) 640 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 641 } 642 643 WakeLock wakeLock; 644 int index = findWakeLockIndexLocked(lock); 645 if (index >= 0) { 646 wakeLock = mWakeLocks.get(index); 647 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 648 // Update existing wake lock. This shouldn't happen but is harmless. 649 notifyWakeLockReleasedLocked(wakeLock); 650 wakeLock.updateProperties(flags, tag, packageName, ws, uid, pid); 651 notifyWakeLockAcquiredLocked(wakeLock); 652 } 653 } else { 654 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, uid, pid); 655 try { 656 lock.linkToDeath(wakeLock, 0); 657 } catch (RemoteException ex) { 658 throw new IllegalArgumentException("Wake lock is already dead."); 659 } 660 notifyWakeLockAcquiredLocked(wakeLock); 661 mWakeLocks.add(wakeLock); 662 } 663 664 applyWakeLockFlagsOnAcquireLocked(wakeLock); 665 mDirty |= DIRTY_WAKE_LOCKS; 666 updatePowerStateLocked(); 667 } 668 } 669 670 @SuppressWarnings("deprecation") 671 private static boolean isScreenLock(final WakeLock wakeLock) { 672 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 673 case PowerManager.FULL_WAKE_LOCK: 674 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 675 case PowerManager.SCREEN_DIM_WAKE_LOCK: 676 return true; 677 } 678 return false; 679 } 680 681 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 682 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 683 && isScreenLock(wakeLock)) { 684 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 685 } 686 } 687 688 private void releaseWakeLockInternal(IBinder lock, int flags) { 689 synchronized (mLock) { 690 int index = findWakeLockIndexLocked(lock); 691 if (index < 0) { 692 if (DEBUG_SPEW) { 693 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 694 + " [not found], flags=0x" + Integer.toHexString(flags)); 695 } 696 return; 697 } 698 699 WakeLock wakeLock = mWakeLocks.get(index); 700 if (DEBUG_SPEW) { 701 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 702 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 703 } 704 705 mWakeLocks.remove(index); 706 notifyWakeLockReleasedLocked(wakeLock); 707 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 708 709 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 710 mRequestWaitForNegativeProximity = true; 711 } 712 713 applyWakeLockFlagsOnReleaseLocked(wakeLock); 714 mDirty |= DIRTY_WAKE_LOCKS; 715 updatePowerStateLocked(); 716 } 717 } 718 719 private void handleWakeLockDeath(WakeLock wakeLock) { 720 synchronized (mLock) { 721 if (DEBUG_SPEW) { 722 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 723 + " [" + wakeLock.mTag + "]"); 724 } 725 726 int index = mWakeLocks.indexOf(wakeLock); 727 if (index < 0) { 728 return; 729 } 730 731 mWakeLocks.remove(index); 732 notifyWakeLockReleasedLocked(wakeLock); 733 734 applyWakeLockFlagsOnReleaseLocked(wakeLock); 735 mDirty |= DIRTY_WAKE_LOCKS; 736 updatePowerStateLocked(); 737 } 738 } 739 740 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 741 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 742 && isScreenLock(wakeLock)) { 743 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 744 PowerManager.USER_ACTIVITY_EVENT_OTHER, 745 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 746 wakeLock.mOwnerUid); 747 } 748 } 749 750 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws) { 751 synchronized (mLock) { 752 int index = findWakeLockIndexLocked(lock); 753 if (index < 0) { 754 if (DEBUG_SPEW) { 755 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 756 + " [not found], ws=" + ws); 757 } 758 throw new IllegalArgumentException("Wake lock not active"); 759 } 760 761 WakeLock wakeLock = mWakeLocks.get(index); 762 if (DEBUG_SPEW) { 763 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 764 + " [" + wakeLock.mTag + "], ws=" + ws); 765 } 766 767 if (!wakeLock.hasSameWorkSource(ws)) { 768 notifyWakeLockReleasedLocked(wakeLock); 769 wakeLock.updateWorkSource(ws); 770 notifyWakeLockAcquiredLocked(wakeLock); 771 } 772 } 773 } 774 775 private int findWakeLockIndexLocked(IBinder lock) { 776 final int count = mWakeLocks.size(); 777 for (int i = 0; i < count; i++) { 778 if (mWakeLocks.get(i).mLock == lock) { 779 return i; 780 } 781 } 782 return -1; 783 } 784 785 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 786 if (mSystemReady) { 787 wakeLock.mNotifiedAcquired = true; 788 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 789 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 790 } 791 } 792 793 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 794 if (mSystemReady && wakeLock.mNotifiedAcquired) { 795 wakeLock.mNotifiedAcquired = false; 796 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 797 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 798 } 799 } 800 801 @SuppressWarnings("deprecation") 802 private boolean isWakeLockLevelSupportedInternal(int level) { 803 synchronized (mLock) { 804 switch (level) { 805 case PowerManager.PARTIAL_WAKE_LOCK: 806 case PowerManager.SCREEN_DIM_WAKE_LOCK: 807 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 808 case PowerManager.FULL_WAKE_LOCK: 809 case PowerManager.DOZE_WAKE_LOCK: 810 return true; 811 812 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 813 return mSystemReady && mDisplayPowerController.isProximitySensorAvailable(); 814 815 default: 816 return false; 817 } 818 } 819 } 820 821 // Called from native code. 822 private void userActivityFromNative(long eventTime, int event, int flags) { 823 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 824 } 825 826 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 827 synchronized (mLock) { 828 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 829 updatePowerStateLocked(); 830 } 831 } 832 } 833 834 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 835 if (DEBUG_SPEW) { 836 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 837 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 838 + ", uid=" + uid); 839 } 840 841 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 842 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 843 || !mBootCompleted || !mSystemReady) { 844 return false; 845 } 846 847 mNotifier.onUserActivity(event, uid); 848 849 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 850 if (eventTime > mLastUserActivityTimeNoChangeLights 851 && eventTime > mLastUserActivityTime) { 852 mLastUserActivityTimeNoChangeLights = eventTime; 853 mDirty |= DIRTY_USER_ACTIVITY; 854 return true; 855 } 856 } else { 857 if (eventTime > mLastUserActivityTime) { 858 mLastUserActivityTime = eventTime; 859 mDirty |= DIRTY_USER_ACTIVITY; 860 return true; 861 } 862 } 863 return false; 864 } 865 866 // Called from native code. 867 private void wakeUpFromNative(long eventTime) { 868 wakeUpInternal(eventTime); 869 } 870 871 private void wakeUpInternal(long eventTime) { 872 synchronized (mLock) { 873 if (wakeUpNoUpdateLocked(eventTime)) { 874 updatePowerStateLocked(); 875 } 876 } 877 } 878 879 private boolean wakeUpNoUpdateLocked(long eventTime) { 880 if (DEBUG_SPEW) { 881 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 882 } 883 884 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 885 || !mBootCompleted || !mSystemReady) { 886 return false; 887 } 888 889 switch (mWakefulness) { 890 case WAKEFULNESS_ASLEEP: 891 Slog.i(TAG, "Waking up from sleep..."); 892 break; 893 case WAKEFULNESS_DREAMING: 894 Slog.i(TAG, "Waking up from dream..."); 895 break; 896 case WAKEFULNESS_DOZING: 897 Slog.i(TAG, "Waking up from dozing..."); 898 break; 899 } 900 901 if (mWakefulness != WAKEFULNESS_DREAMING) { 902 sendPendingNotificationsLocked(); 903 mNotifier.onWakeUpStarted(); 904 mSendWakeUpFinishedNotificationWhenReady = true; 905 } 906 907 mLastWakeTime = eventTime; 908 mWakefulness = WAKEFULNESS_AWAKE; 909 mDirty |= DIRTY_WAKEFULNESS; 910 911 userActivityNoUpdateLocked( 912 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 913 return true; 914 } 915 916 // Called from native code. 917 private void goToSleepFromNative(long eventTime, int reason) { 918 goToSleepInternal(eventTime, reason); 919 } 920 921 private void goToSleepInternal(long eventTime, int reason) { 922 synchronized (mLock) { 923 if (goToSleepNoUpdateLocked(eventTime, reason)) { 924 updatePowerStateLocked(); 925 } 926 } 927 } 928 929 // This method is called goToSleep for historical reasons but we actually start 930 // dozing before really going to sleep. 931 @SuppressWarnings("deprecation") 932 private boolean goToSleepNoUpdateLocked(long eventTime, int reason) { 933 if (DEBUG_SPEW) { 934 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime + ", reason=" + reason); 935 } 936 937 if (eventTime < mLastWakeTime 938 || mWakefulness == WAKEFULNESS_ASLEEP 939 || mWakefulness == WAKEFULNESS_DOZING 940 || !mBootCompleted || !mSystemReady) { 941 return false; 942 } 943 944 switch (reason) { 945 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 946 Slog.i(TAG, "Going to sleep due to device administration policy..."); 947 break; 948 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 949 Slog.i(TAG, "Going to sleep due to screen timeout..."); 950 break; 951 default: 952 Slog.i(TAG, "Going to sleep by user request..."); 953 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 954 break; 955 } 956 957 sendPendingNotificationsLocked(); 958 mNotifier.onGoToSleepStarted(reason); 959 mSendGoToSleepFinishedNotificationWhenReady = true; 960 961 mLastSleepTime = eventTime; 962 mDirty |= DIRTY_WAKEFULNESS; 963 mWakefulness = WAKEFULNESS_DOZING; 964 mSandmanSummoned = true; 965 966 // Report the number of wake locks that will be cleared by going to sleep. 967 int numWakeLocksCleared = 0; 968 final int numWakeLocks = mWakeLocks.size(); 969 for (int i = 0; i < numWakeLocks; i++) { 970 final WakeLock wakeLock = mWakeLocks.get(i); 971 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 972 case PowerManager.FULL_WAKE_LOCK: 973 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 974 case PowerManager.SCREEN_DIM_WAKE_LOCK: 975 numWakeLocksCleared += 1; 976 break; 977 } 978 } 979 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 980 return true; 981 } 982 983 private void napInternal(long eventTime) { 984 synchronized (mLock) { 985 if (napNoUpdateLocked(eventTime)) { 986 updatePowerStateLocked(); 987 } 988 } 989 } 990 991 private boolean napNoUpdateLocked(long eventTime) { 992 if (DEBUG_SPEW) { 993 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 994 } 995 996 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 997 || !mBootCompleted || !mSystemReady) { 998 return false; 999 } 1000 1001 Slog.i(TAG, "Nap time..."); 1002 1003 mDirty |= DIRTY_WAKEFULNESS; 1004 mWakefulness = WAKEFULNESS_DREAMING; 1005 mSandmanSummoned = true; 1006 return true; 1007 } 1008 1009 // Done dozing, drop everything and go to sleep. 1010 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 1011 if (DEBUG_SPEW) { 1012 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 1013 } 1014 1015 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1016 || !mBootCompleted || !mSystemReady) { 1017 return false; 1018 } 1019 1020 Slog.i(TAG, "Sleeping..."); 1021 1022 mDirty |= DIRTY_WAKEFULNESS; 1023 mWakefulness = WAKEFULNESS_ASLEEP; 1024 return true; 1025 } 1026 1027 /** 1028 * Updates the global power state based on dirty bits recorded in mDirty. 1029 * 1030 * This is the main function that performs power state transitions. 1031 * We centralize them here so that we can recompute the power state completely 1032 * each time something important changes, and ensure that we do it the same 1033 * way each time. The point is to gather all of the transition logic here. 1034 */ 1035 private void updatePowerStateLocked() { 1036 if (!mSystemReady || mDirty == 0) { 1037 return; 1038 } 1039 if (!Thread.holdsLock(mLock)) { 1040 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1041 } 1042 1043 // Phase 0: Basic state updates. 1044 updateIsPoweredLocked(mDirty); 1045 updateStayOnLocked(mDirty); 1046 1047 // Phase 1: Update wakefulness. 1048 // Loop because the wake lock and user activity computations are influenced 1049 // by changes in wakefulness. 1050 final long now = SystemClock.uptimeMillis(); 1051 int dirtyPhase2 = 0; 1052 for (;;) { 1053 int dirtyPhase1 = mDirty; 1054 dirtyPhase2 |= dirtyPhase1; 1055 mDirty = 0; 1056 1057 updateWakeLockSummaryLocked(dirtyPhase1); 1058 updateUserActivitySummaryLocked(now, dirtyPhase1); 1059 if (!updateWakefulnessLocked(dirtyPhase1)) { 1060 break; 1061 } 1062 } 1063 1064 // Phase 2: Update dreams and display power state. 1065 updateDreamLocked(dirtyPhase2); 1066 updateDisplayPowerStateLocked(dirtyPhase2); 1067 1068 // Phase 3: Send notifications, if needed. 1069 if (mDisplayReady) { 1070 sendPendingNotificationsLocked(); 1071 } 1072 1073 // Phase 4: Update suspend blocker. 1074 // Because we might release the last suspend blocker here, we need to make sure 1075 // we finished everything else first! 1076 updateSuspendBlockerLocked(); 1077 } 1078 1079 private void sendPendingNotificationsLocked() { 1080 if (mSendWakeUpFinishedNotificationWhenReady) { 1081 mSendWakeUpFinishedNotificationWhenReady = false; 1082 mNotifier.onWakeUpFinished(); 1083 } 1084 if (mSendGoToSleepFinishedNotificationWhenReady) { 1085 mSendGoToSleepFinishedNotificationWhenReady = false; 1086 mNotifier.onGoToSleepFinished(); 1087 } 1088 } 1089 1090 /** 1091 * Updates the value of mIsPowered. 1092 * Sets DIRTY_IS_POWERED if a change occurred. 1093 */ 1094 private void updateIsPoweredLocked(int dirty) { 1095 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1096 final boolean wasPowered = mIsPowered; 1097 final int oldPlugType = mPlugType; 1098 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1099 mPlugType = mBatteryService.getPlugType(); 1100 mBatteryLevel = mBatteryService.getBatteryLevel(); 1101 1102 if (DEBUG_SPEW) { 1103 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1104 + ", mIsPowered=" + mIsPowered 1105 + ", oldPlugType=" + oldPlugType 1106 + ", mPlugType=" + mPlugType 1107 + ", mBatteryLevel=" + mBatteryLevel); 1108 } 1109 1110 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1111 mDirty |= DIRTY_IS_POWERED; 1112 1113 // Update wireless dock detection state. 1114 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1115 mIsPowered, mPlugType, mBatteryLevel); 1116 1117 // Treat plugging and unplugging the devices as a user activity. 1118 // Users find it disconcerting when they plug or unplug the device 1119 // and it shuts off right away. 1120 // Some devices also wake the device when plugged or unplugged because 1121 // they don't have a charging LED. 1122 final long now = SystemClock.uptimeMillis(); 1123 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1124 dockedOnWirelessCharger)) { 1125 wakeUpNoUpdateLocked(now); 1126 } 1127 userActivityNoUpdateLocked( 1128 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1129 1130 // Tell the notifier whether wireless charging has started so that 1131 // it can provide feedback to the user. 1132 if (dockedOnWirelessCharger) { 1133 mNotifier.onWirelessChargingStarted(); 1134 } 1135 } 1136 } 1137 } 1138 1139 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1140 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1141 // Don't wake when powered unless configured to do so. 1142 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1143 return false; 1144 } 1145 1146 // Don't wake when undocked from wireless charger. 1147 // See WirelessChargerDetector for justification. 1148 if (wasPowered && !mIsPowered 1149 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1150 return false; 1151 } 1152 1153 // Don't wake when docked on wireless charger unless we are certain of it. 1154 // See WirelessChargerDetector for justification. 1155 if (!wasPowered && mIsPowered 1156 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1157 && !dockedOnWirelessCharger) { 1158 return false; 1159 } 1160 1161 // If already dreaming and becoming powered, then don't wake. 1162 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1163 return false; 1164 } 1165 1166 // Otherwise wake up! 1167 return true; 1168 } 1169 1170 /** 1171 * Updates the value of mStayOn. 1172 * Sets DIRTY_STAY_ON if a change occurred. 1173 */ 1174 private void updateStayOnLocked(int dirty) { 1175 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1176 final boolean wasStayOn = mStayOn; 1177 if (mStayOnWhilePluggedInSetting != 0 1178 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1179 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1180 } else { 1181 mStayOn = false; 1182 } 1183 1184 if (mStayOn != wasStayOn) { 1185 mDirty |= DIRTY_STAY_ON; 1186 } 1187 } 1188 } 1189 1190 /** 1191 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1192 * Note that most wake-locks are ignored when the system is asleep. 1193 * 1194 * This function must have no other side-effects. 1195 */ 1196 @SuppressWarnings("deprecation") 1197 private void updateWakeLockSummaryLocked(int dirty) { 1198 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1199 mWakeLockSummary = 0; 1200 1201 final int numWakeLocks = mWakeLocks.size(); 1202 for (int i = 0; i < numWakeLocks; i++) { 1203 final WakeLock wakeLock = mWakeLocks.get(i); 1204 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1205 case PowerManager.PARTIAL_WAKE_LOCK: 1206 mWakeLockSummary |= WAKE_LOCK_CPU; 1207 break; 1208 case PowerManager.FULL_WAKE_LOCK: 1209 if (mWakefulness == WAKEFULNESS_AWAKE 1210 || mWakefulness == WAKEFULNESS_DREAMING) { 1211 mWakeLockSummary |= WAKE_LOCK_CPU 1212 | WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1213 } 1214 if (mWakefulness == WAKEFULNESS_AWAKE) { 1215 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1216 } 1217 break; 1218 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1219 if (mWakefulness == WAKEFULNESS_AWAKE 1220 || mWakefulness == WAKEFULNESS_DREAMING) { 1221 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_SCREEN_BRIGHT; 1222 } 1223 if (mWakefulness == WAKEFULNESS_AWAKE) { 1224 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1225 } 1226 break; 1227 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1228 if (mWakefulness == WAKEFULNESS_AWAKE 1229 || mWakefulness == WAKEFULNESS_DREAMING) { 1230 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_SCREEN_DIM; 1231 } 1232 if (mWakefulness == WAKEFULNESS_AWAKE) { 1233 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1234 } 1235 break; 1236 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1237 if (mWakefulness == WAKEFULNESS_AWAKE 1238 || mWakefulness == WAKEFULNESS_DREAMING 1239 || mWakefulness == WAKEFULNESS_DOZING) { 1240 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1241 } 1242 break; 1243 case PowerManager.DOZE_WAKE_LOCK: 1244 if (mWakefulness == WAKEFULNESS_DOZING) { 1245 mWakeLockSummary |= WAKE_LOCK_DOZE; 1246 } 1247 break; 1248 } 1249 } 1250 1251 if (DEBUG_SPEW) { 1252 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1253 + wakefulnessToString(mWakefulness) 1254 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1255 } 1256 } 1257 } 1258 1259 /** 1260 * Updates the value of mUserActivitySummary to summarize the user requested 1261 * state of the system such as whether the screen should be bright or dim. 1262 * Note that user activity is ignored when the system is asleep. 1263 * 1264 * This function must have no other side-effects. 1265 */ 1266 private void updateUserActivitySummaryLocked(long now, int dirty) { 1267 // Update the status of the user activity timeout timer. 1268 if ((dirty & (DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1269 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1270 1271 long nextTimeout = 0; 1272 if (mWakefulness == WAKEFULNESS_AWAKE 1273 || mWakefulness == WAKEFULNESS_DREAMING) { 1274 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1275 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1276 1277 mUserActivitySummary = 0; 1278 if (mLastUserActivityTime >= mLastWakeTime) { 1279 nextTimeout = mLastUserActivityTime 1280 + screenOffTimeout - screenDimDuration; 1281 if (now < nextTimeout) { 1282 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1283 } else { 1284 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1285 if (now < nextTimeout) { 1286 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1287 } 1288 } 1289 } 1290 if (mUserActivitySummary == 0 1291 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1292 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1293 if (now < nextTimeout 1294 && mDisplayPowerRequest.wantScreenOnNormal()) { 1295 mUserActivitySummary = mDisplayPowerRequest.screenState 1296 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1297 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1298 } 1299 } 1300 if (mUserActivitySummary != 0) { 1301 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1302 msg.setAsynchronous(true); 1303 mHandler.sendMessageAtTime(msg, nextTimeout); 1304 } 1305 } else { 1306 mUserActivitySummary = 0; 1307 } 1308 1309 if (DEBUG_SPEW) { 1310 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1311 + wakefulnessToString(mWakefulness) 1312 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1313 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1314 } 1315 } 1316 } 1317 1318 /** 1319 * Called when a user activity timeout has occurred. 1320 * Simply indicates that something about user activity has changed so that the new 1321 * state can be recomputed when the power state is updated. 1322 * 1323 * This function must have no other side-effects besides setting the dirty 1324 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1325 */ 1326 private void handleUserActivityTimeout() { // runs on handler thread 1327 synchronized (mLock) { 1328 if (DEBUG_SPEW) { 1329 Slog.d(TAG, "handleUserActivityTimeout"); 1330 } 1331 1332 mDirty |= DIRTY_USER_ACTIVITY; 1333 updatePowerStateLocked(); 1334 } 1335 } 1336 1337 private int getScreenOffTimeoutLocked() { 1338 int timeout = mScreenOffTimeoutSetting; 1339 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1340 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1341 } 1342 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1343 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1344 } 1345 return Math.max(timeout, MINIMUM_SCREEN_OFF_TIMEOUT); 1346 } 1347 1348 private int getScreenDimDurationLocked(int screenOffTimeout) { 1349 return Math.min(SCREEN_DIM_DURATION, 1350 (int)(screenOffTimeout * MAXIMUM_SCREEN_DIM_RATIO)); 1351 } 1352 1353 /** 1354 * Updates the wakefulness of the device. 1355 * 1356 * This is the function that decides whether the device should start dreaming 1357 * based on the current wake locks and user activity state. It may modify mDirty 1358 * if the wakefulness changes. 1359 * 1360 * Returns true if the wakefulness changed and we need to restart power state calculation. 1361 */ 1362 private boolean updateWakefulnessLocked(int dirty) { 1363 boolean changed = false; 1364 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1365 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1366 | DIRTY_DOCK_STATE)) != 0) { 1367 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1368 if (DEBUG_SPEW) { 1369 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1370 } 1371 final long time = SystemClock.uptimeMillis(); 1372 if (shouldNapAtBedTimeLocked()) { 1373 changed = napNoUpdateLocked(time); 1374 } else { 1375 changed = goToSleepNoUpdateLocked(time, 1376 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1377 } 1378 } 1379 } 1380 return changed; 1381 } 1382 1383 /** 1384 * Returns true if the device should automatically nap and start dreaming when the user 1385 * activity timeout has expired and it's bedtime. 1386 */ 1387 private boolean shouldNapAtBedTimeLocked() { 1388 return mDreamsActivateOnSleepSetting 1389 || (mDreamsActivateOnDockSetting 1390 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1391 } 1392 1393 /** 1394 * Returns true if the device should go to sleep now. 1395 * Also used when exiting a dream to determine whether we should go back 1396 * to being fully awake or else go to sleep for good. 1397 */ 1398 private boolean isItBedTimeYetLocked() { 1399 return mBootCompleted && !isBeingKeptAwakeLocked(); 1400 } 1401 1402 /** 1403 * Returns true if the device is being kept awake by a wake lock, user activity 1404 * or the stay on while powered setting. We also keep the phone awake when 1405 * the proximity sensor returns a positive result so that the device does not 1406 * lock while in a phone call. This function only controls whether the device 1407 * will go to sleep or dream which is independent of whether it will be allowed 1408 * to suspend. 1409 */ 1410 private boolean isBeingKeptAwakeLocked() { 1411 return mStayOn 1412 || mProximityPositive 1413 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1414 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1415 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1416 } 1417 1418 /** 1419 * Determines whether to post a message to the sandman to update the dream state. 1420 */ 1421 private void updateDreamLocked(int dirty) { 1422 if ((dirty & (DIRTY_WAKEFULNESS 1423 | DIRTY_USER_ACTIVITY 1424 | DIRTY_WAKE_LOCKS 1425 | DIRTY_BOOT_COMPLETED 1426 | DIRTY_SETTINGS 1427 | DIRTY_IS_POWERED 1428 | DIRTY_STAY_ON 1429 | DIRTY_PROXIMITY_POSITIVE 1430 | DIRTY_BATTERY_STATE)) != 0) { 1431 scheduleSandmanLocked(); 1432 } 1433 } 1434 1435 private void scheduleSandmanLocked() { 1436 if (!mSandmanScheduled) { 1437 mSandmanScheduled = true; 1438 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1439 msg.setAsynchronous(true); 1440 mHandler.sendMessage(msg); 1441 } 1442 } 1443 1444 /** 1445 * Called when the device enters or exits a dreaming or dozing state. 1446 * 1447 * We do this asynchronously because we must call out of the power manager to start 1448 * the dream and we don't want to hold our lock while doing so. There is a risk that 1449 * the device will wake or go to sleep in the meantime so we have to handle that case. 1450 */ 1451 private void handleSandman() { // runs on handler thread 1452 // Handle preconditions. 1453 final boolean startDreaming; 1454 final int wakefulness; 1455 synchronized (mLock) { 1456 mSandmanScheduled = false; 1457 wakefulness = mWakefulness; 1458 if (mSandmanSummoned) { 1459 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1460 || wakefulness == WAKEFULNESS_DOZING); 1461 mSandmanSummoned = false; 1462 } else { 1463 startDreaming = false; 1464 } 1465 } 1466 1467 // Start dreaming if needed. 1468 // We only control the dream on the handler thread, so we don't need to worry about 1469 // concurrent attempts to start or stop the dream. 1470 final boolean isDreaming; 1471 if (mDreamManager != null) { 1472 // Restart the dream whenever the sandman is summoned. 1473 if (startDreaming) { 1474 mDreamManager.stopDream(); 1475 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1476 } 1477 isDreaming = mDreamManager.isDreaming(); 1478 } else { 1479 isDreaming = false; 1480 } 1481 1482 // Update dream state. 1483 synchronized (mLock) { 1484 // Remember the initial battery level when the dream started. 1485 if (startDreaming && isDreaming) { 1486 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1487 if (wakefulness == WAKEFULNESS_DOZING) { 1488 Slog.i(TAG, "Dozing..."); 1489 } else { 1490 Slog.i(TAG, "Dreaming..."); 1491 } 1492 } 1493 1494 // If preconditions changed, wait for the next iteration to determine 1495 // whether the dream should continue (or be restarted). 1496 if (mSandmanSummoned || mWakefulness != wakefulness) { 1497 return; // wait for next cycle 1498 } 1499 1500 // Determine whether the dream should continue. 1501 if (wakefulness == WAKEFULNESS_DREAMING) { 1502 if (isDreaming && canDreamLocked()) { 1503 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1504 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1505 - mDreamsBatteryLevelDrainCutoffConfig 1506 && !isBeingKeptAwakeLocked()) { 1507 // If the user activity timeout expired and the battery appears 1508 // to be draining faster than it is charging then stop dreaming 1509 // and go to sleep. 1510 Slog.i(TAG, "Stopping dream because the battery appears to " 1511 + "be draining faster than it is charging. " 1512 + "Battery level when dream started: " 1513 + mBatteryLevelWhenDreamStarted + "%. " 1514 + "Battery level now: " + mBatteryLevel + "%."); 1515 } else { 1516 return; // continue dreaming 1517 } 1518 } 1519 1520 // Dream has ended or will be stopped. Update the power state. 1521 if (isItBedTimeYetLocked()) { 1522 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1523 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1524 updatePowerStateLocked(); 1525 } else { 1526 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1527 updatePowerStateLocked(); 1528 } 1529 } else if (wakefulness == WAKEFULNESS_DOZING) { 1530 if (isDreaming) { 1531 return; // continue dozing 1532 } 1533 1534 // Doze has ended or will be stopped. Update the power state. 1535 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1536 updatePowerStateLocked(); 1537 } 1538 } 1539 1540 // Stop dream. 1541 if (isDreaming) { 1542 mDreamManager.stopDream(); 1543 } 1544 } 1545 1546 /** 1547 * Returns true if the device is allowed to dream in its current state. 1548 * This function is not called when dozing. 1549 */ 1550 private boolean canDreamLocked() { 1551 if (mWakefulness != WAKEFULNESS_DREAMING 1552 || !mDreamsSupportedConfig 1553 || !mDreamsEnabledSetting 1554 || !mDisplayPowerRequest.wantScreenOnNormal() 1555 || !mBootCompleted) { 1556 return false; 1557 } 1558 if (!isBeingKeptAwakeLocked()) { 1559 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1560 return false; 1561 } 1562 if (!mIsPowered 1563 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1564 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1565 return false; 1566 } 1567 if (mIsPowered 1568 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1569 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1570 return false; 1571 } 1572 } 1573 return true; 1574 } 1575 1576 private void handleScreenOnBlockerReleased() { 1577 synchronized (mLock) { 1578 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1579 updatePowerStateLocked(); 1580 } 1581 } 1582 1583 /** 1584 * Updates the display power state asynchronously. 1585 * When the update is finished, mDisplayReady will be set to true. The display 1586 * controller posts a message to tell us when the actual display power state 1587 * has been updated so we come back here to double-check and finish up. 1588 * 1589 * This function recalculates the display power state each time. 1590 */ 1591 private void updateDisplayPowerStateLocked(int dirty) { 1592 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1593 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1594 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1595 final int newScreenState = getDesiredScreenPowerStateLocked(); 1596 mDisplayPowerRequest.screenState = newScreenState; 1597 nativeSetPowerState(isScreenOnLocked(), 1598 newScreenState == DisplayPowerRequest.SCREEN_STATE_BRIGHT); 1599 1600 int screenBrightness = mScreenBrightnessSettingDefault; 1601 float screenAutoBrightnessAdjustment = 0.0f; 1602 boolean autoBrightness = (mScreenBrightnessModeSetting == 1603 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1604 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1605 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1606 autoBrightness = false; 1607 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1608 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1609 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1610 screenBrightness = mScreenBrightnessSetting; 1611 } 1612 if (autoBrightness) { 1613 screenBrightness = mScreenBrightnessSettingDefault; 1614 if (isValidAutoBrightnessAdjustment( 1615 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1616 screenAutoBrightnessAdjustment = 1617 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1618 } else if (isValidAutoBrightnessAdjustment( 1619 mScreenAutoBrightnessAdjustmentSetting)) { 1620 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1621 } 1622 } 1623 screenBrightness = Math.max(Math.min(screenBrightness, 1624 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1625 screenAutoBrightnessAdjustment = Math.max(Math.min( 1626 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1627 mDisplayPowerRequest.screenBrightness = screenBrightness; 1628 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1629 screenAutoBrightnessAdjustment; 1630 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1631 1632 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1633 1634 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1635 1636 mDisplayReady = mDisplayPowerController.requestPowerState(mDisplayPowerRequest, 1637 mRequestWaitForNegativeProximity); 1638 mRequestWaitForNegativeProximity = false; 1639 1640 if (DEBUG_SPEW) { 1641 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1642 + ", newScreenState=" + newScreenState 1643 + ", mWakefulness=" + mWakefulness 1644 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1645 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1646 + ", mBootCompleted=" + mBootCompleted); 1647 } 1648 } 1649 } 1650 1651 private static boolean isValidBrightness(int value) { 1652 return value >= 0 && value <= 255; 1653 } 1654 1655 private static boolean isValidAutoBrightnessAdjustment(float value) { 1656 // Handles NaN by always returning false. 1657 return value >= -1.0f && value <= 1.0f; 1658 } 1659 1660 private int getDesiredScreenPowerStateLocked() { 1661 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1662 return DisplayPowerRequest.SCREEN_STATE_OFF; 1663 } 1664 1665 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1666 return DisplayPowerRequest.SCREEN_STATE_DOZE; 1667 } 1668 1669 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1670 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1671 || !mBootCompleted) { 1672 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1673 } 1674 1675 return DisplayPowerRequest.SCREEN_STATE_DIM; 1676 } 1677 1678 private final DisplayPowerController.Callbacks mDisplayPowerControllerCallbacks = 1679 new DisplayPowerController.Callbacks() { 1680 @Override 1681 public void onStateChanged() { 1682 synchronized (mLock) { 1683 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1684 updatePowerStateLocked(); 1685 } 1686 } 1687 1688 @Override 1689 public void onProximityPositive() { 1690 synchronized (mLock) { 1691 mProximityPositive = true; 1692 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1693 updatePowerStateLocked(); 1694 } 1695 } 1696 1697 @Override 1698 public void onProximityNegative() { 1699 synchronized (mLock) { 1700 mProximityPositive = false; 1701 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1702 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1703 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1704 updatePowerStateLocked(); 1705 } 1706 } 1707 }; 1708 1709 private boolean shouldUseProximitySensorLocked() { 1710 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1711 } 1712 1713 /** 1714 * Updates the suspend blocker that keeps the CPU alive. 1715 * 1716 * This function must have no other side-effects. 1717 */ 1718 private void updateSuspendBlockerLocked() { 1719 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1720 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1721 final boolean autoSuspend = !needDisplaySuspendBlocker; 1722 1723 // Disable auto-suspend if needed. 1724 if (!autoSuspend) { 1725 if (mDecoupleAutoSuspendModeFromDisplayConfig) { 1726 setAutoSuspendModeLocked(false); 1727 } 1728 if (mDecoupleInteractiveModeFromDisplayConfig) { 1729 setInteractiveModeLocked(true); 1730 } 1731 } 1732 1733 // First acquire suspend blockers if needed. 1734 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1735 mWakeLockSuspendBlocker.acquire(); 1736 mHoldingWakeLockSuspendBlocker = true; 1737 } 1738 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1739 mDisplaySuspendBlocker.acquire(); 1740 mHoldingDisplaySuspendBlocker = true; 1741 } 1742 1743 // Then release suspend blockers if needed. 1744 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1745 mWakeLockSuspendBlocker.release(); 1746 mHoldingWakeLockSuspendBlocker = false; 1747 } 1748 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1749 mDisplaySuspendBlocker.release(); 1750 mHoldingDisplaySuspendBlocker = false; 1751 } 1752 1753 // Enable auto-suspend if needed. 1754 if (autoSuspend) { 1755 if (mDecoupleInteractiveModeFromDisplayConfig) { 1756 setInteractiveModeLocked(false); 1757 } 1758 if (mDecoupleAutoSuspendModeFromDisplayConfig) { 1759 setAutoSuspendModeLocked(true); 1760 } 1761 } 1762 } 1763 1764 /** 1765 * Return true if we must keep a suspend blocker active on behalf of the display. 1766 * We do so if the screen is on or is in transition between states. 1767 */ 1768 private boolean needDisplaySuspendBlockerLocked() { 1769 if (!mDisplayReady) { 1770 return true; 1771 } 1772 if (mDisplayPowerRequest.wantScreenOnNormal()) { 1773 // If we asked for the screen to be on but it is off due to the proximity 1774 // sensor then we may suspend but only if the configuration allows it. 1775 // On some hardware it may not be safe to suspend because the proximity 1776 // sensor may not be correctly configured as a wake-up source. 1777 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1778 || !mSuspendWhenScreenOffDueToProximityConfig) { 1779 return true; 1780 } 1781 } 1782 // Let the system suspend if the screen is off or dozing. 1783 return false; 1784 } 1785 1786 private void setAutoSuspendModeLocked(boolean enable) { 1787 if (enable != mAutoSuspendModeEnabled) { 1788 if (DEBUG) { 1789 Slog.d(TAG, "Setting auto-suspend mode to " + enable); 1790 } 1791 mAutoSuspendModeEnabled = enable; 1792 nativeSetAutoSuspend(enable); 1793 } 1794 } 1795 1796 private void setInteractiveModeLocked(boolean enable) { 1797 if (enable != mInteractiveModeEnabled) { 1798 if (DEBUG) { 1799 Slog.d(TAG, "Setting interactive mode to " + enable); 1800 } 1801 mInteractiveModeEnabled = enable; 1802 nativeSetInteractive(enable); 1803 } 1804 } 1805 1806 private boolean isScreenOnInternal() { 1807 synchronized (mLock) { 1808 return isScreenOnLocked(); 1809 } 1810 } 1811 1812 private boolean isScreenOnLocked() { 1813 return mWakefulness == WAKEFULNESS_AWAKE 1814 || mWakefulness == WAKEFULNESS_DREAMING; 1815 } 1816 1817 private void handleBatteryStateChangedLocked() { 1818 mDirty |= DIRTY_BATTERY_STATE; 1819 updatePowerStateLocked(); 1820 } 1821 1822 private void startWatchingForBootAnimationFinished() { 1823 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1824 } 1825 1826 private void checkIfBootAnimationFinished() { 1827 if (DEBUG) { 1828 Slog.d(TAG, "Check if boot animation finished..."); 1829 } 1830 1831 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1832 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1833 BOOT_ANIMATION_POLL_INTERVAL); 1834 return; 1835 } 1836 1837 synchronized (mLock) { 1838 if (!mBootCompleted) { 1839 Slog.i(TAG, "Boot animation finished."); 1840 handleBootCompletedLocked(); 1841 } 1842 } 1843 } 1844 1845 private void handleBootCompletedLocked() { 1846 final long now = SystemClock.uptimeMillis(); 1847 mBootCompleted = true; 1848 mDirty |= DIRTY_BOOT_COMPLETED; 1849 userActivityNoUpdateLocked( 1850 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1851 updatePowerStateLocked(); 1852 } 1853 1854 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1855 final String reason, boolean wait) { 1856 if (mHandler == null || !mSystemReady) { 1857 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1858 } 1859 1860 Runnable runnable = new Runnable() { 1861 @Override 1862 public void run() { 1863 synchronized (this) { 1864 if (shutdown) { 1865 ShutdownThread.shutdown(mContext, confirm); 1866 } else { 1867 ShutdownThread.reboot(mContext, reason, confirm); 1868 } 1869 } 1870 } 1871 }; 1872 1873 // ShutdownThread must run on a looper capable of displaying the UI. 1874 Message msg = Message.obtain(mHandler, runnable); 1875 msg.setAsynchronous(true); 1876 mHandler.sendMessage(msg); 1877 1878 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 1879 if (wait) { 1880 synchronized (runnable) { 1881 while (true) { 1882 try { 1883 runnable.wait(); 1884 } catch (InterruptedException e) { 1885 } 1886 } 1887 } 1888 } 1889 } 1890 1891 private void crashInternal(final String message) { 1892 Thread t = new Thread("PowerManagerService.crash()") { 1893 @Override 1894 public void run() { 1895 throw new RuntimeException(message); 1896 } 1897 }; 1898 try { 1899 t.start(); 1900 t.join(); 1901 } catch (InterruptedException e) { 1902 Log.wtf(TAG, e); 1903 } 1904 } 1905 1906 private void setStayOnSettingInternal(int val) { 1907 Settings.Global.putInt(mContext.getContentResolver(), 1908 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 1909 } 1910 1911 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 1912 synchronized (mLock) { 1913 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 1914 mDirty |= DIRTY_SETTINGS; 1915 updatePowerStateLocked(); 1916 } 1917 } 1918 1919 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 1920 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 1921 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 1922 } 1923 1924 private void setAttentionLightInternal(boolean on, int color) { 1925 Light light; 1926 synchronized (mLock) { 1927 if (!mSystemReady) { 1928 return; 1929 } 1930 light = mAttentionLight; 1931 } 1932 1933 // Control light outside of lock. 1934 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 1935 } 1936 1937 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 1938 synchronized (mLock) { 1939 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 1940 mScreenBrightnessOverrideFromWindowManager = brightness; 1941 mDirty |= DIRTY_SETTINGS; 1942 updatePowerStateLocked(); 1943 } 1944 } 1945 } 1946 1947 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 1948 synchronized (mLock) { 1949 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 1950 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 1951 mDirty |= DIRTY_SETTINGS; 1952 updatePowerStateLocked(); 1953 } 1954 } 1955 } 1956 1957 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 1958 synchronized (mLock) { 1959 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 1960 mTemporaryScreenBrightnessSettingOverride = brightness; 1961 mDirty |= DIRTY_SETTINGS; 1962 updatePowerStateLocked(); 1963 } 1964 } 1965 } 1966 1967 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 1968 synchronized (mLock) { 1969 // Note: This condition handles NaN because NaN is not equal to any other 1970 // value, including itself. 1971 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 1972 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 1973 mDirty |= DIRTY_SETTINGS; 1974 updatePowerStateLocked(); 1975 } 1976 } 1977 } 1978 1979 /** 1980 * Low-level function turn the device off immediately, without trying 1981 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 1982 */ 1983 public static void lowLevelShutdown() { 1984 SystemProperties.set("sys.powerctl", "shutdown"); 1985 } 1986 1987 /** 1988 * Low-level function to reboot the device. On success, this function 1989 * doesn't return. If more than 5 seconds passes from the time, 1990 * a reboot is requested, this method returns. 1991 * 1992 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 1993 */ 1994 public static void lowLevelReboot(String reason) { 1995 if (reason == null) { 1996 reason = ""; 1997 } 1998 SystemProperties.set("sys.powerctl", "reboot," + reason); 1999 try { 2000 Thread.sleep(20000); 2001 } catch (InterruptedException e) { 2002 Thread.currentThread().interrupt(); 2003 } 2004 } 2005 2006 @Override // Watchdog.Monitor implementation 2007 public void monitor() { 2008 // Grab and release lock for watchdog monitor to detect deadlocks. 2009 synchronized (mLock) { 2010 } 2011 } 2012 2013 private void dumpInternal(PrintWriter pw) { 2014 pw.println("POWER MANAGER (dumpsys power)\n"); 2015 2016 final DisplayPowerController dpc; 2017 final WirelessChargerDetector wcd; 2018 synchronized (mLock) { 2019 pw.println("Power Manager State:"); 2020 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2021 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2022 pw.println(" mIsPowered=" + mIsPowered); 2023 pw.println(" mPlugType=" + mPlugType); 2024 pw.println(" mBatteryLevel=" + mBatteryLevel); 2025 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2026 pw.println(" mDockState=" + mDockState); 2027 pw.println(" mStayOn=" + mStayOn); 2028 pw.println(" mProximityPositive=" + mProximityPositive); 2029 pw.println(" mBootCompleted=" + mBootCompleted); 2030 pw.println(" mSystemReady=" + mSystemReady); 2031 pw.println(" mAutoSuspendModeEnabled=" + mAutoSuspendModeEnabled); 2032 pw.println(" mInteactiveModeEnabled=" + mInteractiveModeEnabled); 2033 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2034 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2035 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2036 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2037 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2038 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2039 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2040 pw.println(" mSendWakeUpFinishedNotificationWhenReady=" 2041 + mSendWakeUpFinishedNotificationWhenReady); 2042 pw.println(" mSendGoToSleepFinishedNotificationWhenReady=" 2043 + mSendGoToSleepFinishedNotificationWhenReady); 2044 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2045 pw.println(" mLastUserActivityTimeNoChangeLights=" 2046 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2047 pw.println(" mDisplayReady=" + mDisplayReady); 2048 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2049 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2050 2051 pw.println(); 2052 pw.println("Settings and Configuration:"); 2053 pw.println(" mDecoupleAutoSuspendModeFromDisplayConfig=" 2054 + mDecoupleAutoSuspendModeFromDisplayConfig); 2055 pw.println(" mDecoupleInteractiveModeFromDisplayConfig=" 2056 + mDecoupleInteractiveModeFromDisplayConfig); 2057 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2058 + mWakeUpWhenPluggedOrUnpluggedConfig); 2059 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2060 + mSuspendWhenScreenOffDueToProximityConfig); 2061 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2062 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2063 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2064 + mDreamsActivatedOnSleepByDefaultConfig); 2065 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2066 + mDreamsActivatedOnDockByDefaultConfig); 2067 pw.println(" mDreamsEnabledOnBatteryConfig=" 2068 + mDreamsEnabledOnBatteryConfig); 2069 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2070 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2071 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2072 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2073 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2074 + mDreamsBatteryLevelDrainCutoffConfig); 2075 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2076 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2077 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2078 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2079 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2080 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2081 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2082 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2083 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2084 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2085 + mScreenAutoBrightnessAdjustmentSetting); 2086 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2087 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2088 + mScreenBrightnessOverrideFromWindowManager); 2089 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2090 + mUserActivityTimeoutOverrideFromWindowManager); 2091 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2092 + mTemporaryScreenBrightnessSettingOverride); 2093 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2094 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2095 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2096 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2097 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2098 2099 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2100 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2101 pw.println(); 2102 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2103 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2104 2105 pw.println(); 2106 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2107 for (WakeLock wl : mWakeLocks) { 2108 pw.println(" " + wl); 2109 } 2110 2111 pw.println(); 2112 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2113 for (SuspendBlocker sb : mSuspendBlockers) { 2114 pw.println(" " + sb); 2115 } 2116 2117 pw.println(); 2118 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2119 2120 pw.println(); 2121 pw.println("Display Blanker: " + mDisplayBlanker); 2122 2123 dpc = mDisplayPowerController; 2124 wcd = mWirelessChargerDetector; 2125 } 2126 2127 if (dpc != null) { 2128 dpc.dump(pw); 2129 } 2130 2131 if (wcd != null) { 2132 wcd.dump(pw); 2133 } 2134 } 2135 2136 private SuspendBlocker createSuspendBlockerLocked(String name) { 2137 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2138 mSuspendBlockers.add(suspendBlocker); 2139 return suspendBlocker; 2140 } 2141 2142 private static String wakefulnessToString(int wakefulness) { 2143 switch (wakefulness) { 2144 case WAKEFULNESS_ASLEEP: 2145 return "Asleep"; 2146 case WAKEFULNESS_AWAKE: 2147 return "Awake"; 2148 case WAKEFULNESS_DREAMING: 2149 return "Dreaming"; 2150 case WAKEFULNESS_DOZING: 2151 return "Dozing"; 2152 default: 2153 return Integer.toString(wakefulness); 2154 } 2155 } 2156 2157 private static WorkSource copyWorkSource(WorkSource workSource) { 2158 return workSource != null ? new WorkSource(workSource) : null; 2159 } 2160 2161 private final class BatteryReceiver extends BroadcastReceiver { 2162 @Override 2163 public void onReceive(Context context, Intent intent) { 2164 synchronized (mLock) { 2165 handleBatteryStateChangedLocked(); 2166 } 2167 } 2168 } 2169 2170 private final class BootCompletedReceiver extends BroadcastReceiver { 2171 @Override 2172 public void onReceive(Context context, Intent intent) { 2173 // This is our early signal that the system thinks it has finished booting. 2174 // However, the boot animation may still be running for a few more seconds 2175 // since it is ultimately in charge of when it terminates. 2176 // Defer transitioning into the boot completed state until the animation exits. 2177 // We do this so that the screen does not start to dim prematurely before 2178 // the user has actually had a chance to interact with the device. 2179 startWatchingForBootAnimationFinished(); 2180 } 2181 } 2182 2183 private final class DreamReceiver extends BroadcastReceiver { 2184 @Override 2185 public void onReceive(Context context, Intent intent) { 2186 synchronized (mLock) { 2187 scheduleSandmanLocked(); 2188 } 2189 } 2190 } 2191 2192 private final class UserSwitchedReceiver extends BroadcastReceiver { 2193 @Override 2194 public void onReceive(Context context, Intent intent) { 2195 synchronized (mLock) { 2196 handleSettingsChangedLocked(); 2197 } 2198 } 2199 } 2200 2201 private final class DockReceiver extends BroadcastReceiver { 2202 @Override 2203 public void onReceive(Context context, Intent intent) { 2204 synchronized (mLock) { 2205 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2206 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2207 if (mDockState != dockState) { 2208 mDockState = dockState; 2209 mDirty |= DIRTY_DOCK_STATE; 2210 updatePowerStateLocked(); 2211 } 2212 } 2213 } 2214 } 2215 2216 private final class SettingsObserver extends ContentObserver { 2217 public SettingsObserver(Handler handler) { 2218 super(handler); 2219 } 2220 2221 @Override 2222 public void onChange(boolean selfChange, Uri uri) { 2223 synchronized (mLock) { 2224 handleSettingsChangedLocked(); 2225 } 2226 } 2227 } 2228 2229 /** 2230 * Handler for asynchronous operations performed by the power manager. 2231 */ 2232 private final class PowerManagerHandler extends Handler { 2233 public PowerManagerHandler(Looper looper) { 2234 super(looper, null, true /*async*/); 2235 } 2236 2237 @Override 2238 public void handleMessage(Message msg) { 2239 switch (msg.what) { 2240 case MSG_USER_ACTIVITY_TIMEOUT: 2241 handleUserActivityTimeout(); 2242 break; 2243 case MSG_SANDMAN: 2244 handleSandman(); 2245 break; 2246 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2247 handleScreenOnBlockerReleased(); 2248 break; 2249 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2250 checkIfBootAnimationFinished(); 2251 break; 2252 } 2253 } 2254 } 2255 2256 /** 2257 * Represents a wake lock that has been acquired by an application. 2258 */ 2259 private final class WakeLock implements IBinder.DeathRecipient { 2260 public final IBinder mLock; 2261 public int mFlags; 2262 public String mTag; 2263 public final String mPackageName; 2264 public WorkSource mWorkSource; 2265 public final int mOwnerUid; 2266 public final int mOwnerPid; 2267 public boolean mNotifiedAcquired; 2268 2269 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2270 WorkSource workSource, int ownerUid, int ownerPid) { 2271 mLock = lock; 2272 mFlags = flags; 2273 mTag = tag; 2274 mPackageName = packageName; 2275 mWorkSource = copyWorkSource(workSource); 2276 mOwnerUid = ownerUid; 2277 mOwnerPid = ownerPid; 2278 } 2279 2280 @Override 2281 public void binderDied() { 2282 PowerManagerService.this.handleWakeLockDeath(this); 2283 } 2284 2285 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2286 int ownerUid, int ownerPid) { 2287 return mFlags == flags 2288 && mTag.equals(tag) 2289 && hasSameWorkSource(workSource) 2290 && mOwnerUid == ownerUid 2291 && mOwnerPid == ownerPid; 2292 } 2293 2294 public void updateProperties(int flags, String tag, String packageName, 2295 WorkSource workSource, int ownerUid, int ownerPid) { 2296 if (!mPackageName.equals(packageName)) { 2297 throw new IllegalStateException("Existing wake lock package name changed: " 2298 + mPackageName + " to " + packageName); 2299 } 2300 if (mOwnerUid != ownerUid) { 2301 throw new IllegalStateException("Existing wake lock uid changed: " 2302 + mOwnerUid + " to " + ownerUid); 2303 } 2304 if (mOwnerPid != ownerPid) { 2305 throw new IllegalStateException("Existing wake lock pid changed: " 2306 + mOwnerPid + " to " + ownerPid); 2307 } 2308 mFlags = flags; 2309 mTag = tag; 2310 updateWorkSource(workSource); 2311 } 2312 2313 public boolean hasSameWorkSource(WorkSource workSource) { 2314 return Objects.equal(mWorkSource, workSource); 2315 } 2316 2317 public void updateWorkSource(WorkSource workSource) { 2318 mWorkSource = copyWorkSource(workSource); 2319 } 2320 2321 @Override 2322 public String toString() { 2323 return getLockLevelString() 2324 + " '" + mTag + "'" + getLockFlagsString() 2325 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2326 } 2327 2328 @SuppressWarnings("deprecation") 2329 private String getLockLevelString() { 2330 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2331 case PowerManager.FULL_WAKE_LOCK: 2332 return "FULL_WAKE_LOCK "; 2333 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2334 return "SCREEN_BRIGHT_WAKE_LOCK "; 2335 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2336 return "SCREEN_DIM_WAKE_LOCK "; 2337 case PowerManager.PARTIAL_WAKE_LOCK: 2338 return "PARTIAL_WAKE_LOCK "; 2339 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2340 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2341 case PowerManager.DOZE_WAKE_LOCK: 2342 return "DOZE_WAKE_LOCK "; 2343 default: 2344 return "??? "; 2345 } 2346 } 2347 2348 private String getLockFlagsString() { 2349 String result = ""; 2350 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2351 result += " ACQUIRE_CAUSES_WAKEUP"; 2352 } 2353 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2354 result += " ON_AFTER_RELEASE"; 2355 } 2356 return result; 2357 } 2358 } 2359 2360 private final class SuspendBlockerImpl implements SuspendBlocker { 2361 private final String mName; 2362 private int mReferenceCount; 2363 2364 public SuspendBlockerImpl(String name) { 2365 mName = name; 2366 } 2367 2368 @Override 2369 protected void finalize() throws Throwable { 2370 try { 2371 if (mReferenceCount != 0) { 2372 Log.wtf(TAG, "Suspend blocker \"" + mName 2373 + "\" was finalized without being released!"); 2374 mReferenceCount = 0; 2375 nativeReleaseSuspendBlocker(mName); 2376 } 2377 } finally { 2378 super.finalize(); 2379 } 2380 } 2381 2382 @Override 2383 public void acquire() { 2384 synchronized (this) { 2385 mReferenceCount += 1; 2386 if (mReferenceCount == 1) { 2387 if (DEBUG_SPEW) { 2388 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2389 } 2390 nativeAcquireSuspendBlocker(mName); 2391 } 2392 } 2393 } 2394 2395 @Override 2396 public void release() { 2397 synchronized (this) { 2398 mReferenceCount -= 1; 2399 if (mReferenceCount == 0) { 2400 if (DEBUG_SPEW) { 2401 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2402 } 2403 nativeReleaseSuspendBlocker(mName); 2404 } else if (mReferenceCount < 0) { 2405 Log.wtf(TAG, "Suspend blocker \"" + mName 2406 + "\" was released without being acquired!", new Throwable()); 2407 mReferenceCount = 0; 2408 } 2409 } 2410 } 2411 2412 @Override 2413 public String toString() { 2414 synchronized (this) { 2415 return mName + ": ref count=" + mReferenceCount; 2416 } 2417 } 2418 } 2419 2420 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2421 private int mNestCount; 2422 2423 public boolean isHeld() { 2424 synchronized (this) { 2425 return mNestCount != 0; 2426 } 2427 } 2428 2429 @Override 2430 public void acquire() { 2431 synchronized (this) { 2432 mNestCount += 1; 2433 if (DEBUG) { 2434 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2435 } 2436 } 2437 } 2438 2439 @Override 2440 public void release() { 2441 synchronized (this) { 2442 mNestCount -= 1; 2443 if (mNestCount < 0) { 2444 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2445 new Throwable()); 2446 mNestCount = 0; 2447 } 2448 if (mNestCount == 0) { 2449 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2450 } 2451 if (DEBUG) { 2452 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2453 } 2454 } 2455 } 2456 2457 @Override 2458 public String toString() { 2459 synchronized (this) { 2460 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2461 } 2462 } 2463 } 2464 2465 private final class DisplayBlankerImpl implements DisplayBlanker { 2466 private boolean mBlanked; 2467 2468 @Override 2469 public void blankAllDisplays() { 2470 synchronized (this) { 2471 mBlanked = true; 2472 mDisplayManagerInternal.blankAllDisplaysFromPowerManager(); 2473 if (!mDecoupleInteractiveModeFromDisplayConfig) { 2474 setInteractiveModeLocked(false); 2475 } 2476 if (!mDecoupleAutoSuspendModeFromDisplayConfig) { 2477 setAutoSuspendModeLocked(true); 2478 } 2479 } 2480 } 2481 2482 @Override 2483 public void unblankAllDisplays() { 2484 synchronized (this) { 2485 if (!mDecoupleAutoSuspendModeFromDisplayConfig) { 2486 setAutoSuspendModeLocked(false); 2487 } 2488 if (!mDecoupleInteractiveModeFromDisplayConfig) { 2489 setInteractiveModeLocked(true); 2490 } 2491 mDisplayManagerInternal.unblankAllDisplaysFromPowerManager(); 2492 mBlanked = false; 2493 } 2494 } 2495 2496 @Override 2497 public String toString() { 2498 synchronized (this) { 2499 return "blanked=" + mBlanked; 2500 } 2501 } 2502 } 2503 2504 private final class BinderService extends IPowerManager.Stub { 2505 @Override // Binder call 2506 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2507 String packageName, int uid) { 2508 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid)); 2509 } 2510 2511 @Override // Binder call 2512 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2513 WorkSource ws) { 2514 if (lock == null) { 2515 throw new IllegalArgumentException("lock must not be null"); 2516 } 2517 if (packageName == null) { 2518 throw new IllegalArgumentException("packageName must not be null"); 2519 } 2520 PowerManager.validateWakeLockParameters(flags, tag); 2521 2522 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2523 if (ws != null && ws.size() != 0) { 2524 mContext.enforceCallingOrSelfPermission( 2525 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2526 } else { 2527 ws = null; 2528 } 2529 2530 final int uid = Binder.getCallingUid(); 2531 final int pid = Binder.getCallingPid(); 2532 final long ident = Binder.clearCallingIdentity(); 2533 try { 2534 acquireWakeLockInternal(lock, flags, tag, packageName, ws, uid, pid); 2535 } finally { 2536 Binder.restoreCallingIdentity(ident); 2537 } 2538 } 2539 2540 @Override // Binder call 2541 public void releaseWakeLock(IBinder lock, int flags) { 2542 if (lock == null) { 2543 throw new IllegalArgumentException("lock must not be null"); 2544 } 2545 2546 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2547 2548 final long ident = Binder.clearCallingIdentity(); 2549 try { 2550 releaseWakeLockInternal(lock, flags); 2551 } finally { 2552 Binder.restoreCallingIdentity(ident); 2553 } 2554 } 2555 2556 @Override // Binder call 2557 public void updateWakeLockUids(IBinder lock, int[] uids) { 2558 WorkSource ws = null; 2559 2560 if (uids != null) { 2561 ws = new WorkSource(); 2562 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2563 // one at a time? 2564 for (int i = 0; i < uids.length; i++) { 2565 ws.add(uids[i]); 2566 } 2567 } 2568 updateWakeLockWorkSource(lock, ws); 2569 } 2570 2571 @Override // Binder call 2572 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws) { 2573 if (lock == null) { 2574 throw new IllegalArgumentException("lock must not be null"); 2575 } 2576 2577 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2578 if (ws != null && ws.size() != 0) { 2579 mContext.enforceCallingOrSelfPermission( 2580 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2581 } else { 2582 ws = null; 2583 } 2584 2585 final long ident = Binder.clearCallingIdentity(); 2586 try { 2587 updateWakeLockWorkSourceInternal(lock, ws); 2588 } finally { 2589 Binder.restoreCallingIdentity(ident); 2590 } 2591 } 2592 2593 @Override // Binder call 2594 public boolean isWakeLockLevelSupported(int level) { 2595 final long ident = Binder.clearCallingIdentity(); 2596 try { 2597 return isWakeLockLevelSupportedInternal(level); 2598 } finally { 2599 Binder.restoreCallingIdentity(ident); 2600 } 2601 } 2602 2603 @Override // Binder call 2604 public void userActivity(long eventTime, int event, int flags) { 2605 final long now = SystemClock.uptimeMillis(); 2606 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2607 != PackageManager.PERMISSION_GRANTED) { 2608 // Once upon a time applications could call userActivity(). 2609 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2610 // request instead of throwing a SecurityException so we don't break old apps. 2611 synchronized (mLock) { 2612 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2613 mLastWarningAboutUserActivityPermission = now; 2614 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2615 + "caller does not have DEVICE_POWER permission. " 2616 + "Please fix your app! " 2617 + " pid=" + Binder.getCallingPid() 2618 + " uid=" + Binder.getCallingUid()); 2619 } 2620 } 2621 return; 2622 } 2623 2624 if (eventTime > SystemClock.uptimeMillis()) { 2625 throw new IllegalArgumentException("event time must not be in the future"); 2626 } 2627 2628 final int uid = Binder.getCallingUid(); 2629 final long ident = Binder.clearCallingIdentity(); 2630 try { 2631 userActivityInternal(eventTime, event, flags, uid); 2632 } finally { 2633 Binder.restoreCallingIdentity(ident); 2634 } 2635 } 2636 2637 @Override // Binder call 2638 public void wakeUp(long eventTime) { 2639 if (eventTime > SystemClock.uptimeMillis()) { 2640 throw new IllegalArgumentException("event time must not be in the future"); 2641 } 2642 2643 mContext.enforceCallingOrSelfPermission( 2644 android.Manifest.permission.DEVICE_POWER, null); 2645 2646 final long ident = Binder.clearCallingIdentity(); 2647 try { 2648 wakeUpInternal(eventTime); 2649 } finally { 2650 Binder.restoreCallingIdentity(ident); 2651 } 2652 } 2653 2654 @Override // Binder call 2655 public void goToSleep(long eventTime, int reason) { 2656 if (eventTime > SystemClock.uptimeMillis()) { 2657 throw new IllegalArgumentException("event time must not be in the future"); 2658 } 2659 2660 mContext.enforceCallingOrSelfPermission( 2661 android.Manifest.permission.DEVICE_POWER, null); 2662 2663 final long ident = Binder.clearCallingIdentity(); 2664 try { 2665 goToSleepInternal(eventTime, reason); 2666 } finally { 2667 Binder.restoreCallingIdentity(ident); 2668 } 2669 } 2670 2671 @Override // Binder call 2672 public void nap(long eventTime) { 2673 if (eventTime > SystemClock.uptimeMillis()) { 2674 throw new IllegalArgumentException("event time must not be in the future"); 2675 } 2676 2677 mContext.enforceCallingOrSelfPermission( 2678 android.Manifest.permission.DEVICE_POWER, null); 2679 2680 final long ident = Binder.clearCallingIdentity(); 2681 try { 2682 napInternal(eventTime); 2683 } finally { 2684 Binder.restoreCallingIdentity(ident); 2685 } 2686 } 2687 2688 @Override // Binder call 2689 public boolean isScreenOn() { 2690 final long ident = Binder.clearCallingIdentity(); 2691 try { 2692 return isScreenOnInternal(); 2693 } finally { 2694 Binder.restoreCallingIdentity(ident); 2695 } 2696 } 2697 2698 /** 2699 * Reboots the device. 2700 * 2701 * @param confirm If true, shows a reboot confirmation dialog. 2702 * @param reason The reason for the reboot, or null if none. 2703 * @param wait If true, this call waits for the reboot to complete and does not return. 2704 */ 2705 @Override // Binder call 2706 public void reboot(boolean confirm, String reason, boolean wait) { 2707 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2708 2709 final long ident = Binder.clearCallingIdentity(); 2710 try { 2711 shutdownOrRebootInternal(false, confirm, reason, wait); 2712 } finally { 2713 Binder.restoreCallingIdentity(ident); 2714 } 2715 } 2716 2717 /** 2718 * Shuts down the device. 2719 * 2720 * @param confirm If true, shows a shutdown confirmation dialog. 2721 * @param wait If true, this call waits for the shutdown to complete and does not return. 2722 */ 2723 @Override // Binder call 2724 public void shutdown(boolean confirm, boolean wait) { 2725 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2726 2727 final long ident = Binder.clearCallingIdentity(); 2728 try { 2729 shutdownOrRebootInternal(true, confirm, null, wait); 2730 } finally { 2731 Binder.restoreCallingIdentity(ident); 2732 } 2733 } 2734 2735 /** 2736 * Crash the runtime (causing a complete restart of the Android framework). 2737 * Requires REBOOT permission. Mostly for testing. Should not return. 2738 */ 2739 @Override // Binder call 2740 public void crash(String message) { 2741 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2742 2743 final long ident = Binder.clearCallingIdentity(); 2744 try { 2745 crashInternal(message); 2746 } finally { 2747 Binder.restoreCallingIdentity(ident); 2748 } 2749 } 2750 2751 /** 2752 * Set the setting that determines whether the device stays on when plugged in. 2753 * The argument is a bit string, with each bit specifying a power source that, 2754 * when the device is connected to that source, causes the device to stay on. 2755 * See {@link android.os.BatteryManager} for the list of power sources that 2756 * can be specified. Current values include 2757 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2758 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2759 * 2760 * Used by "adb shell svc power stayon ..." 2761 * 2762 * @param val an {@code int} containing the bits that specify which power sources 2763 * should cause the device to stay on. 2764 */ 2765 @Override // Binder call 2766 public void setStayOnSetting(int val) { 2767 mContext.enforceCallingOrSelfPermission( 2768 android.Manifest.permission.WRITE_SETTINGS, null); 2769 2770 final long ident = Binder.clearCallingIdentity(); 2771 try { 2772 setStayOnSettingInternal(val); 2773 } finally { 2774 Binder.restoreCallingIdentity(ident); 2775 } 2776 } 2777 2778 /** 2779 * Used by device administration to set the maximum screen off timeout. 2780 * 2781 * This method must only be called by the device administration policy manager. 2782 */ 2783 @Override // Binder call 2784 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2785 final long ident = Binder.clearCallingIdentity(); 2786 try { 2787 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2788 } finally { 2789 Binder.restoreCallingIdentity(ident); 2790 } 2791 } 2792 2793 /** 2794 * Used by the settings application and brightness control widgets to 2795 * temporarily override the current screen brightness setting so that the 2796 * user can observe the effect of an intended settings change without applying 2797 * it immediately. 2798 * 2799 * The override will be canceled when the setting value is next updated. 2800 * 2801 * @param brightness The overridden brightness. 2802 * 2803 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2804 */ 2805 @Override // Binder call 2806 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2807 mContext.enforceCallingOrSelfPermission( 2808 android.Manifest.permission.DEVICE_POWER, null); 2809 2810 final long ident = Binder.clearCallingIdentity(); 2811 try { 2812 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2813 } finally { 2814 Binder.restoreCallingIdentity(ident); 2815 } 2816 } 2817 2818 /** 2819 * Used by the settings application and brightness control widgets to 2820 * temporarily override the current screen auto-brightness adjustment setting so that the 2821 * user can observe the effect of an intended settings change without applying 2822 * it immediately. 2823 * 2824 * The override will be canceled when the setting value is next updated. 2825 * 2826 * @param adj The overridden brightness, or Float.NaN to disable the override. 2827 * 2828 * @see Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2829 */ 2830 @Override // Binder call 2831 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2832 mContext.enforceCallingOrSelfPermission( 2833 android.Manifest.permission.DEVICE_POWER, null); 2834 2835 final long ident = Binder.clearCallingIdentity(); 2836 try { 2837 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2838 } finally { 2839 Binder.restoreCallingIdentity(ident); 2840 } 2841 } 2842 2843 /** 2844 * Used by the phone application to make the attention LED flash when ringing. 2845 */ 2846 @Override // Binder call 2847 public void setAttentionLight(boolean on, int color) { 2848 mContext.enforceCallingOrSelfPermission( 2849 android.Manifest.permission.DEVICE_POWER, null); 2850 2851 final long ident = Binder.clearCallingIdentity(); 2852 try { 2853 setAttentionLightInternal(on, color); 2854 } finally { 2855 Binder.restoreCallingIdentity(ident); 2856 } 2857 } 2858 2859 @Override // Binder call 2860 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2861 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2862 != PackageManager.PERMISSION_GRANTED) { 2863 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2864 + Binder.getCallingPid() 2865 + ", uid=" + Binder.getCallingUid()); 2866 return; 2867 } 2868 2869 final long ident = Binder.clearCallingIdentity(); 2870 try { 2871 dumpInternal(pw); 2872 } finally { 2873 Binder.restoreCallingIdentity(ident); 2874 } 2875 } 2876 } 2877 2878 private final class LocalService extends PowerManagerInternal { 2879 /** 2880 * Used by the window manager to override the screen brightness based on the 2881 * current foreground activity. 2882 * 2883 * This method must only be called by the window manager. 2884 * 2885 * @param brightness The overridden brightness, or -1 to disable the override. 2886 */ 2887 @Override 2888 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 2889 mContext.enforceCallingOrSelfPermission( 2890 android.Manifest.permission.DEVICE_POWER, null); 2891 2892 final long ident = Binder.clearCallingIdentity(); 2893 try { 2894 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 2895 } finally { 2896 Binder.restoreCallingIdentity(ident); 2897 } 2898 } 2899 2900 /** 2901 * Used by the window manager to override the button brightness based on the 2902 * current foreground activity. 2903 * 2904 * This method must only be called by the window manager. 2905 * 2906 * @param brightness The overridden brightness, or -1 to disable the override. 2907 */ 2908 @Override 2909 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 2910 // Do nothing. 2911 // Button lights are not currently supported in the new implementation. 2912 mContext.enforceCallingOrSelfPermission( 2913 android.Manifest.permission.DEVICE_POWER, null); 2914 } 2915 2916 /** 2917 * Used by the window manager to override the user activity timeout based on the 2918 * current foreground activity. It can only be used to make the timeout shorter 2919 * than usual, not longer. 2920 * 2921 * This method must only be called by the window manager. 2922 * 2923 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 2924 */ 2925 @Override 2926 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 2927 mContext.enforceCallingOrSelfPermission( 2928 android.Manifest.permission.DEVICE_POWER, null); 2929 2930 final long ident = Binder.clearCallingIdentity(); 2931 try { 2932 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 2933 } finally { 2934 Binder.restoreCallingIdentity(ident); 2935 } 2936 } 2937 2938 @Override 2939 public void setPolicy(WindowManagerPolicy policy) { 2940 PowerManagerService.this.setPolicy(policy); 2941 } 2942 } 2943} 2944