PowerManagerService.java revision 4e5c089ef3e62e7f658e71c0be262d09bd3e399b
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.power; 18 19import com.android.internal.app.IAppOpsService; 20import com.android.internal.app.IBatteryStats; 21import com.android.server.BatteryService; 22import com.android.server.EventLogTags; 23import com.android.server.LocalServices; 24import com.android.server.ServiceThread; 25import com.android.server.lights.Light; 26import com.android.server.lights.LightsManager; 27import com.android.server.Watchdog; 28 29import android.Manifest; 30import android.content.BroadcastReceiver; 31import android.content.ContentResolver; 32import android.content.Context; 33import android.content.Intent; 34import android.content.IntentFilter; 35import android.content.pm.PackageManager; 36import android.content.res.Resources; 37import android.database.ContentObserver; 38import android.hardware.SensorManager; 39import android.hardware.SystemSensorManager; 40import android.hardware.display.DisplayManagerInternal; 41import android.hardware.display.DisplayManagerInternal.DisplayPowerRequest; 42import android.net.Uri; 43import android.os.BatteryManager; 44import android.os.Binder; 45import android.os.Handler; 46import android.os.IBinder; 47import android.os.IPowerManager; 48import android.os.Looper; 49import android.os.Message; 50import android.os.PowerManager; 51import android.os.PowerManagerInternal; 52import android.os.Process; 53import android.os.RemoteException; 54import android.os.SystemClock; 55import android.os.SystemProperties; 56import android.os.SystemService; 57import android.os.UserHandle; 58import android.os.WorkSource; 59import android.provider.Settings; 60import android.service.dreams.DreamManagerInternal; 61import android.util.EventLog; 62import android.util.Log; 63import android.util.Slog; 64import android.util.TimeUtils; 65import android.view.Display; 66import android.view.WindowManagerPolicy; 67 68import java.io.FileDescriptor; 69import java.io.PrintWriter; 70import java.util.ArrayList; 71 72import libcore.util.Objects; 73 74/** 75 * The power manager service is responsible for coordinating power management 76 * functions on the device. 77 */ 78public final class PowerManagerService extends com.android.server.SystemService 79 implements Watchdog.Monitor { 80 private static final String TAG = "PowerManagerService"; 81 82 private static final boolean DEBUG = false; 83 private static final boolean DEBUG_SPEW = DEBUG && true; 84 85 // Message: Sent when a user activity timeout occurs to update the power state. 86 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 87 // Message: Sent when the device enters or exits a dreaming or dozing state. 88 private static final int MSG_SANDMAN = 2; 89 // Message: Sent when the screen on blocker is released. 90 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 91 // Message: Sent to poll whether the boot animation has terminated. 92 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 93 94 // Dirty bit: mWakeLocks changed 95 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 96 // Dirty bit: mWakefulness changed 97 private static final int DIRTY_WAKEFULNESS = 1 << 1; 98 // Dirty bit: user activity was poked or may have timed out 99 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 100 // Dirty bit: actual display power state was updated asynchronously 101 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 102 // Dirty bit: mBootCompleted changed 103 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 104 // Dirty bit: settings changed 105 private static final int DIRTY_SETTINGS = 1 << 5; 106 // Dirty bit: mIsPowered changed 107 private static final int DIRTY_IS_POWERED = 1 << 6; 108 // Dirty bit: mStayOn changed 109 private static final int DIRTY_STAY_ON = 1 << 7; 110 // Dirty bit: battery state changed 111 private static final int DIRTY_BATTERY_STATE = 1 << 8; 112 // Dirty bit: proximity state changed 113 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 114 // Dirty bit: screen on blocker state became held or unheld 115 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 116 // Dirty bit: dock state changed 117 private static final int DIRTY_DOCK_STATE = 1 << 11; 118 119 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 120 // The screen should be off or in the process of being turned off by the display controller. 121 // The device typically passes through the dozing state first. 122 private static final int WAKEFULNESS_ASLEEP = 0; 123 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 124 // When the user activity timeout expires, the device may start dreaming or go to sleep. 125 private static final int WAKEFULNESS_AWAKE = 1; 126 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 127 // which ends the dream. The device goes to sleep when goToSleep() is called, when 128 // the dream ends or when unplugged. 129 // User activity may brighten the screen but does not end the dream. 130 private static final int WAKEFULNESS_DREAMING = 2; 131 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 132 // low-power "doze" dream to run which keeps the display on but lets the application 133 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 134 // The device fully goes to sleep if the dream cannot be started or ends on its own. 135 private static final int WAKEFULNESS_DOZING = 3; 136 137 // Summarizes the state of all active wakelocks. 138 private static final int WAKE_LOCK_CPU = 1 << 0; 139 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 140 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 141 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 142 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 143 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 144 private static final int WAKE_LOCK_DOZE = 1 << 6; 145 146 // Summarizes the user activity state. 147 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 148 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 149 150 // Default and minimum screen off timeout in milliseconds. 151 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 152 private static final int MINIMUM_SCREEN_OFF_TIMEOUT = 10 * 1000; 153 154 // The screen dim duration, in milliseconds. 155 // This is subtracted from the end of the screen off timeout so the 156 // minimum screen off timeout should be longer than this. 157 private static final int SCREEN_DIM_DURATION = 7 * 1000; 158 159 // The maximum screen dim time expressed as a ratio relative to the screen 160 // off timeout. If the screen off timeout is very short then we want the 161 // dim timeout to also be quite short so that most of the time is spent on. 162 // Otherwise the user won't get much screen on time before dimming occurs. 163 private static final float MAXIMUM_SCREEN_DIM_RATIO = 0.2f; 164 165 // The name of the boot animation service in init.rc. 166 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 167 168 // Poll interval in milliseconds for watching boot animation finished. 169 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 170 171 private final Context mContext; 172 private LightsManager mLightsManager; 173 private BatteryService mBatteryService; 174 private DisplayManagerInternal mDisplayManagerInternal; 175 private IBatteryStats mBatteryStats; 176 private IAppOpsService mAppOps; 177 private ServiceThread mHandlerThread; 178 private PowerManagerHandler mHandler; 179 private WindowManagerPolicy mPolicy; 180 private Notifier mNotifier; 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 // True if the device is in an interactive state. 214 private boolean mInteractive; 215 private boolean mInteractiveChanging; 216 217 // If true, instructs the display controller to wait for the proximity sensor to 218 // go negative before turning the screen on. 219 private boolean mRequestWaitForNegativeProximity; 220 221 // Timestamp of the last time the device was awoken or put to sleep. 222 private long mLastWakeTime; 223 private long mLastSleepTime; 224 225 // Timestamp of the last call to user activity. 226 private long mLastUserActivityTime; 227 private long mLastUserActivityTimeNoChangeLights; 228 229 // A bitfield that summarizes the effect of the user activity timer. 230 // A zero value indicates that the user activity timer has expired. 231 private int mUserActivitySummary; 232 233 // The desired display power state. The actual state may lag behind the 234 // requested because it is updated asynchronously by the display power controller. 235 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 236 237 // True if the display power state has been fully applied, which means the display 238 // is actually on or actually off or whatever was requested. 239 private boolean mDisplayReady; 240 241 // The suspend blocker used to keep the CPU alive when an application has acquired 242 // a wake lock. 243 private final SuspendBlocker mWakeLockSuspendBlocker; 244 245 // True if the wake lock suspend blocker has been acquired. 246 private boolean mHoldingWakeLockSuspendBlocker; 247 248 // The suspend blocker used to keep the CPU alive when the display is on, the 249 // display is getting ready or there is user activity (in which case the display 250 // must be on). 251 private final SuspendBlocker mDisplaySuspendBlocker; 252 253 // True if the display suspend blocker has been acquired. 254 private boolean mHoldingDisplaySuspendBlocker; 255 256 // The screen on blocker used to keep the screen from turning on while the lock 257 // screen is coming up. 258 private final ScreenOnBlockerImpl mScreenOnBlocker; 259 260 // True if systemReady() has been called. 261 private boolean mSystemReady; 262 263 // True if boot completed occurred. We keep the screen on until this happens. 264 private boolean mBootCompleted; 265 266 // True if auto-suspend mode is enabled. 267 // Refer to autosuspend.h. 268 private boolean mHalAutoSuspendModeEnabled; 269 270 // True if interactive mode is enabled. 271 // Refer to power.h. 272 private boolean mHalInteractiveModeEnabled; 273 274 // True if the device is plugged into a power source. 275 private boolean mIsPowered; 276 277 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 278 private int mPlugType; 279 280 // The current battery level percentage. 281 private int mBatteryLevel; 282 283 // The battery level percentage at the time the dream started. 284 // This is used to terminate a dream and go to sleep if the battery is 285 // draining faster than it is charging and the user activity timeout has expired. 286 private int mBatteryLevelWhenDreamStarted; 287 288 // The current dock state. 289 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 290 291 // True to decouple auto-suspend mode from the display state. 292 private boolean mDecoupleHalAutoSuspendModeFromDisplayConfig; 293 294 // True to decouple interactive mode from the display state. 295 private boolean mDecoupleHalInteractiveModeFromDisplayConfig; 296 297 // True if the device should wake up when plugged or unplugged. 298 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 299 300 // True if the device should suspend when the screen is off due to proximity. 301 private boolean mSuspendWhenScreenOffDueToProximityConfig; 302 303 // True if dreams are supported on this device. 304 private boolean mDreamsSupportedConfig; 305 306 // Default value for dreams enabled 307 private boolean mDreamsEnabledByDefaultConfig; 308 309 // Default value for dreams activate-on-sleep 310 private boolean mDreamsActivatedOnSleepByDefaultConfig; 311 312 // Default value for dreams activate-on-dock 313 private boolean mDreamsActivatedOnDockByDefaultConfig; 314 315 // True if dreams can run while not plugged in. 316 private boolean mDreamsEnabledOnBatteryConfig; 317 318 // Minimum battery level to allow dreaming when powered. 319 // Use -1 to disable this safety feature. 320 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 321 322 // Minimum battery level to allow dreaming when not powered. 323 // Use -1 to disable this safety feature. 324 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 325 326 // If the battery level drops by this percentage and the user activity timeout 327 // has expired, then assume the device is receiving insufficient current to charge 328 // effectively and terminate the dream. Use -1 to disable this safety feature. 329 private int mDreamsBatteryLevelDrainCutoffConfig; 330 331 // True if dreams are enabled by the user. 332 private boolean mDreamsEnabledSetting; 333 334 // True if dreams should be activated on sleep. 335 private boolean mDreamsActivateOnSleepSetting; 336 337 // True if dreams should be activated on dock. 338 private boolean mDreamsActivateOnDockSetting; 339 340 // The screen off timeout setting value in milliseconds. 341 private int mScreenOffTimeoutSetting; 342 343 // The maximum allowable screen off timeout according to the device 344 // administration policy. Overrides other settings. 345 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 346 347 // The stay on while plugged in setting. 348 // A bitfield of battery conditions under which to make the screen stay on. 349 private int mStayOnWhilePluggedInSetting; 350 351 // True if the device should stay on. 352 private boolean mStayOn; 353 354 // True if the proximity sensor reads a positive result. 355 private boolean mProximityPositive; 356 357 // Screen brightness setting limits. 358 private int mScreenBrightnessSettingMinimum; 359 private int mScreenBrightnessSettingMaximum; 360 private int mScreenBrightnessSettingDefault; 361 362 // The screen brightness setting, from 0 to 255. 363 // Use -1 if no value has been set. 364 private int mScreenBrightnessSetting; 365 366 // The screen auto-brightness adjustment setting, from -1 to 1. 367 // Use 0 if there is no adjustment. 368 private float mScreenAutoBrightnessAdjustmentSetting; 369 370 // The screen brightness mode. 371 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 372 private int mScreenBrightnessModeSetting; 373 374 // The screen brightness setting override from the window manager 375 // to allow the current foreground activity to override the brightness. 376 // Use -1 to disable. 377 private int mScreenBrightnessOverrideFromWindowManager = -1; 378 379 // The user activity timeout override from the window manager 380 // to allow the current foreground activity to override the user activity timeout. 381 // Use -1 to disable. 382 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 383 384 // The screen brightness setting override from the settings application 385 // to temporarily adjust the brightness until next updated, 386 // Use -1 to disable. 387 private int mTemporaryScreenBrightnessSettingOverride = -1; 388 389 // The screen brightness adjustment setting override from the settings 390 // application to temporarily adjust the auto-brightness adjustment factor 391 // until next updated, in the range -1..1. 392 // Use NaN to disable. 393 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 394 395 // Time when we last logged a warning about calling userActivity() without permission. 396 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 397 398 private native void nativeInit(); 399 400 private static native void nativeAcquireSuspendBlocker(String name); 401 private static native void nativeReleaseSuspendBlocker(String name); 402 private static native void nativeSetInteractive(boolean enable); 403 private static native void nativeSetAutoSuspend(boolean enable); 404 private static native void nativeSendPowerHint(int hintId, int data); 405 406 public PowerManagerService(Context context) { 407 super(context); 408 mContext = context; 409 synchronized (mLock) { 410 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 411 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 412 mDisplaySuspendBlocker.acquire(); 413 mHoldingDisplaySuspendBlocker = true; 414 mHalAutoSuspendModeEnabled = false; 415 mHalInteractiveModeEnabled = true; 416 417 mScreenOnBlocker = new ScreenOnBlockerImpl(); 418 mWakefulness = WAKEFULNESS_AWAKE; 419 mInteractive = true; 420 421 nativeInit(); 422 nativeSetAutoSuspend(false); 423 nativeSetInteractive(true); 424 } 425 } 426 427 @Override 428 public void onStart() { 429 publishBinderService(Context.POWER_SERVICE, new BinderService()); 430 publishLocalService(PowerManagerInternal.class, new LocalService()); 431 } 432 433 /** 434 * Initialize the power manager. 435 * Must be called before any other functions within the power manager are called. 436 */ 437 public void init(LightsManager ls, 438 BatteryService bs, IBatteryStats bss, 439 IAppOpsService appOps) { 440 mLightsManager = ls; 441 mBatteryService = bs; 442 mBatteryStats = bss; 443 mAppOps = appOps; 444 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 445 mHandlerThread = new ServiceThread(TAG, 446 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 447 mHandlerThread.start(); 448 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 449 450 Watchdog.getInstance().addMonitor(this); 451 Watchdog.getInstance().addThread(mHandler); 452 } 453 454 void setPolicy(WindowManagerPolicy policy) { 455 synchronized (mLock) { 456 mPolicy = policy; 457 } 458 } 459 460 public void systemReady() { 461 synchronized (mLock) { 462 mSystemReady = true; 463 mDreamManager = LocalServices.getService(DreamManagerInternal.class); 464 465 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 466 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 467 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 468 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 469 470 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 471 472 // The notifier runs on the system server's main looper so as not to interfere 473 // with the animations and other critical functions of the power manager. 474 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 475 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 476 mScreenOnBlocker, mPolicy); 477 478 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 479 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 480 mHandler); 481 mSettingsObserver = new SettingsObserver(mHandler); 482 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 483 484 // Initialize display power management. 485 mDisplayManagerInternal.initPowerManagement( 486 mDisplayPowerCallbacks, mHandler, sensorManager); 487 488 // Register for broadcasts from other components of the system. 489 IntentFilter filter = new IntentFilter(); 490 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 491 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 492 493 filter = new IntentFilter(); 494 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 495 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 496 497 filter = new IntentFilter(); 498 filter.addAction(Intent.ACTION_DREAMING_STARTED); 499 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 500 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 501 502 filter = new IntentFilter(); 503 filter.addAction(Intent.ACTION_USER_SWITCHED); 504 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 505 506 filter = new IntentFilter(); 507 filter.addAction(Intent.ACTION_DOCK_EVENT); 508 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 509 510 // Register for settings changes. 511 final ContentResolver resolver = mContext.getContentResolver(); 512 resolver.registerContentObserver(Settings.Secure.getUriFor( 513 Settings.Secure.SCREENSAVER_ENABLED), 514 false, mSettingsObserver, UserHandle.USER_ALL); 515 resolver.registerContentObserver(Settings.Secure.getUriFor( 516 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 517 false, mSettingsObserver, UserHandle.USER_ALL); 518 resolver.registerContentObserver(Settings.Secure.getUriFor( 519 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 520 false, mSettingsObserver, UserHandle.USER_ALL); 521 resolver.registerContentObserver(Settings.System.getUriFor( 522 Settings.System.SCREEN_OFF_TIMEOUT), 523 false, mSettingsObserver, UserHandle.USER_ALL); 524 resolver.registerContentObserver(Settings.Global.getUriFor( 525 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 526 false, mSettingsObserver, UserHandle.USER_ALL); 527 resolver.registerContentObserver(Settings.System.getUriFor( 528 Settings.System.SCREEN_BRIGHTNESS), 529 false, mSettingsObserver, UserHandle.USER_ALL); 530 resolver.registerContentObserver(Settings.System.getUriFor( 531 Settings.System.SCREEN_BRIGHTNESS_MODE), 532 false, mSettingsObserver, UserHandle.USER_ALL); 533 534 // Go. 535 readConfigurationLocked(); 536 updateSettingsLocked(); 537 mDirty |= DIRTY_BATTERY_STATE; 538 updatePowerStateLocked(); 539 } 540 } 541 542 private void readConfigurationLocked() { 543 final Resources resources = mContext.getResources(); 544 545 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 546 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 547 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 548 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 549 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 550 com.android.internal.R.bool.config_unplugTurnsOnScreen); 551 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 552 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 553 mDreamsSupportedConfig = resources.getBoolean( 554 com.android.internal.R.bool.config_dreamsSupported); 555 mDreamsEnabledByDefaultConfig = resources.getBoolean( 556 com.android.internal.R.bool.config_dreamsEnabledByDefault); 557 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 558 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 559 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 560 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 561 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 562 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 563 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 564 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 565 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 566 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 567 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 568 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 569 } 570 571 private void updateSettingsLocked() { 572 final ContentResolver resolver = mContext.getContentResolver(); 573 574 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 575 Settings.Secure.SCREENSAVER_ENABLED, 576 mDreamsEnabledByDefaultConfig ? 1 : 0, 577 UserHandle.USER_CURRENT) != 0); 578 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 579 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 580 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 581 UserHandle.USER_CURRENT) != 0); 582 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 583 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 584 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 585 UserHandle.USER_CURRENT) != 0); 586 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 587 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 588 UserHandle.USER_CURRENT); 589 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 590 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 591 592 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 593 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 594 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 595 UserHandle.USER_CURRENT); 596 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 597 mTemporaryScreenBrightnessSettingOverride = -1; 598 } 599 600 final float oldScreenAutoBrightnessAdjustmentSetting = 601 mScreenAutoBrightnessAdjustmentSetting; 602 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 603 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 604 UserHandle.USER_CURRENT); 605 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 606 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 607 } 608 609 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 610 Settings.System.SCREEN_BRIGHTNESS_MODE, 611 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 612 613 mDirty |= DIRTY_SETTINGS; 614 } 615 616 private void handleSettingsChangedLocked() { 617 updateSettingsLocked(); 618 updatePowerStateLocked(); 619 } 620 621 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 622 WorkSource ws, String historyTag, int uid, int pid) { 623 synchronized (mLock) { 624 if (DEBUG_SPEW) { 625 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 626 + ", flags=0x" + Integer.toHexString(flags) 627 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 628 } 629 630 WakeLock wakeLock; 631 int index = findWakeLockIndexLocked(lock); 632 if (index >= 0) { 633 wakeLock = mWakeLocks.get(index); 634 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 635 // Update existing wake lock. This shouldn't happen but is harmless. 636 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 637 uid, pid, ws, historyTag); 638 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 639 } 640 } else { 641 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 642 try { 643 lock.linkToDeath(wakeLock, 0); 644 } catch (RemoteException ex) { 645 throw new IllegalArgumentException("Wake lock is already dead."); 646 } 647 notifyWakeLockAcquiredLocked(wakeLock); 648 mWakeLocks.add(wakeLock); 649 } 650 651 applyWakeLockFlagsOnAcquireLocked(wakeLock); 652 mDirty |= DIRTY_WAKE_LOCKS; 653 updatePowerStateLocked(); 654 } 655 } 656 657 @SuppressWarnings("deprecation") 658 private static boolean isScreenLock(final WakeLock wakeLock) { 659 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 660 case PowerManager.FULL_WAKE_LOCK: 661 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 662 case PowerManager.SCREEN_DIM_WAKE_LOCK: 663 return true; 664 } 665 return false; 666 } 667 668 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 669 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 670 && isScreenLock(wakeLock)) { 671 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 672 } 673 } 674 675 private void releaseWakeLockInternal(IBinder lock, int flags) { 676 synchronized (mLock) { 677 int index = findWakeLockIndexLocked(lock); 678 if (index < 0) { 679 if (DEBUG_SPEW) { 680 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 681 + " [not found], flags=0x" + Integer.toHexString(flags)); 682 } 683 return; 684 } 685 686 WakeLock wakeLock = mWakeLocks.get(index); 687 if (DEBUG_SPEW) { 688 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 689 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 690 } 691 692 mWakeLocks.remove(index); 693 notifyWakeLockReleasedLocked(wakeLock); 694 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 695 696 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 697 mRequestWaitForNegativeProximity = true; 698 } 699 700 applyWakeLockFlagsOnReleaseLocked(wakeLock); 701 mDirty |= DIRTY_WAKE_LOCKS; 702 updatePowerStateLocked(); 703 } 704 } 705 706 private void handleWakeLockDeath(WakeLock wakeLock) { 707 synchronized (mLock) { 708 if (DEBUG_SPEW) { 709 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 710 + " [" + wakeLock.mTag + "]"); 711 } 712 713 int index = mWakeLocks.indexOf(wakeLock); 714 if (index < 0) { 715 return; 716 } 717 718 mWakeLocks.remove(index); 719 notifyWakeLockReleasedLocked(wakeLock); 720 721 applyWakeLockFlagsOnReleaseLocked(wakeLock); 722 mDirty |= DIRTY_WAKE_LOCKS; 723 updatePowerStateLocked(); 724 } 725 } 726 727 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 728 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 729 && isScreenLock(wakeLock)) { 730 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 731 PowerManager.USER_ACTIVITY_EVENT_OTHER, 732 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 733 wakeLock.mOwnerUid); 734 } 735 } 736 737 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag) { 738 synchronized (mLock) { 739 int index = findWakeLockIndexLocked(lock); 740 if (index < 0) { 741 if (DEBUG_SPEW) { 742 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 743 + " [not found], ws=" + ws); 744 } 745 throw new IllegalArgumentException("Wake lock not active"); 746 } 747 748 WakeLock wakeLock = mWakeLocks.get(index); 749 if (DEBUG_SPEW) { 750 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 751 + " [" + wakeLock.mTag + "], ws=" + ws); 752 } 753 754 if (!wakeLock.hasSameWorkSource(ws)) { 755 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 756 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 757 ws, historyTag); 758 wakeLock.mHistoryTag = historyTag; 759 wakeLock.updateWorkSource(ws); 760 } 761 } 762 } 763 764 private int findWakeLockIndexLocked(IBinder lock) { 765 final int count = mWakeLocks.size(); 766 for (int i = 0; i < count; i++) { 767 if (mWakeLocks.get(i).mLock == lock) { 768 return i; 769 } 770 } 771 return -1; 772 } 773 774 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 775 if (mSystemReady) { 776 wakeLock.mNotifiedAcquired = true; 777 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 778 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 779 wakeLock.mHistoryTag); 780 } 781 } 782 783 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 784 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 785 if (mSystemReady && wakeLock.mNotifiedAcquired) { 786 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 787 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 788 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 789 } 790 } 791 792 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 793 if (mSystemReady && wakeLock.mNotifiedAcquired) { 794 wakeLock.mNotifiedAcquired = false; 795 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 796 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 797 } 798 } 799 800 @SuppressWarnings("deprecation") 801 private boolean isWakeLockLevelSupportedInternal(int level) { 802 synchronized (mLock) { 803 switch (level) { 804 case PowerManager.PARTIAL_WAKE_LOCK: 805 case PowerManager.SCREEN_DIM_WAKE_LOCK: 806 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 807 case PowerManager.FULL_WAKE_LOCK: 808 case PowerManager.DOZE_WAKE_LOCK: 809 return true; 810 811 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 812 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 813 814 default: 815 return false; 816 } 817 } 818 } 819 820 // Called from native code. 821 private void userActivityFromNative(long eventTime, int event, int flags) { 822 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 823 } 824 825 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 826 synchronized (mLock) { 827 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 828 updatePowerStateLocked(); 829 } 830 } 831 } 832 833 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 834 if (DEBUG_SPEW) { 835 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 836 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 837 + ", uid=" + uid); 838 } 839 840 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 841 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 842 || !mBootCompleted || !mSystemReady) { 843 return false; 844 } 845 846 mNotifier.onUserActivity(event, uid); 847 848 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 849 if (eventTime > mLastUserActivityTimeNoChangeLights 850 && eventTime > mLastUserActivityTime) { 851 mLastUserActivityTimeNoChangeLights = eventTime; 852 mDirty |= DIRTY_USER_ACTIVITY; 853 return true; 854 } 855 } else { 856 if (eventTime > mLastUserActivityTime) { 857 mLastUserActivityTime = eventTime; 858 mDirty |= DIRTY_USER_ACTIVITY; 859 return true; 860 } 861 } 862 return false; 863 } 864 865 private void wakeUpInternal(long eventTime) { 866 synchronized (mLock) { 867 if (wakeUpNoUpdateLocked(eventTime)) { 868 updatePowerStateLocked(); 869 } 870 } 871 } 872 873 private boolean wakeUpNoUpdateLocked(long eventTime) { 874 if (DEBUG_SPEW) { 875 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 876 } 877 878 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 879 || !mBootCompleted || !mSystemReady) { 880 return false; 881 } 882 883 switch (mWakefulness) { 884 case WAKEFULNESS_ASLEEP: 885 Slog.i(TAG, "Waking up from sleep..."); 886 break; 887 case WAKEFULNESS_DREAMING: 888 Slog.i(TAG, "Waking up from dream..."); 889 break; 890 case WAKEFULNESS_DOZING: 891 Slog.i(TAG, "Waking up from dozing..."); 892 break; 893 } 894 895 mLastWakeTime = eventTime; 896 mDirty |= DIRTY_WAKEFULNESS; 897 mWakefulness = WAKEFULNESS_AWAKE; 898 setInteractiveStateLocked(true, 0); 899 900 userActivityNoUpdateLocked( 901 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 902 return true; 903 } 904 905 private void goToSleepInternal(long eventTime, int reason) { 906 synchronized (mLock) { 907 if (goToSleepNoUpdateLocked(eventTime, reason)) { 908 updatePowerStateLocked(); 909 } 910 } 911 } 912 913 // This method is called goToSleep for historical reasons but we actually start 914 // dozing before really going to sleep. 915 @SuppressWarnings("deprecation") 916 private boolean goToSleepNoUpdateLocked(long eventTime, int reason) { 917 if (DEBUG_SPEW) { 918 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime + ", reason=" + reason); 919 } 920 921 if (eventTime < mLastWakeTime 922 || mWakefulness == WAKEFULNESS_ASLEEP 923 || mWakefulness == WAKEFULNESS_DOZING 924 || !mBootCompleted || !mSystemReady) { 925 return false; 926 } 927 928 switch (reason) { 929 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 930 Slog.i(TAG, "Going to sleep due to device administration policy..."); 931 break; 932 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 933 Slog.i(TAG, "Going to sleep due to screen timeout..."); 934 break; 935 default: 936 Slog.i(TAG, "Going to sleep by user request..."); 937 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 938 break; 939 } 940 941 mLastSleepTime = eventTime; 942 mDirty |= DIRTY_WAKEFULNESS; 943 mWakefulness = WAKEFULNESS_DOZING; 944 mSandmanSummoned = true; 945 setInteractiveStateLocked(false, reason); 946 947 // Report the number of wake locks that will be cleared by going to sleep. 948 int numWakeLocksCleared = 0; 949 final int numWakeLocks = mWakeLocks.size(); 950 for (int i = 0; i < numWakeLocks; i++) { 951 final WakeLock wakeLock = mWakeLocks.get(i); 952 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 953 case PowerManager.FULL_WAKE_LOCK: 954 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 955 case PowerManager.SCREEN_DIM_WAKE_LOCK: 956 numWakeLocksCleared += 1; 957 break; 958 } 959 } 960 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 961 return true; 962 } 963 964 private void napInternal(long eventTime) { 965 synchronized (mLock) { 966 if (napNoUpdateLocked(eventTime)) { 967 updatePowerStateLocked(); 968 } 969 } 970 } 971 972 private boolean napNoUpdateLocked(long eventTime) { 973 if (DEBUG_SPEW) { 974 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 975 } 976 977 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 978 || !mBootCompleted || !mSystemReady) { 979 return false; 980 } 981 982 Slog.i(TAG, "Nap time..."); 983 984 mDirty |= DIRTY_WAKEFULNESS; 985 mWakefulness = WAKEFULNESS_DREAMING; 986 mSandmanSummoned = true; 987 setInteractiveStateLocked(true, 0); 988 return true; 989 } 990 991 // Done dozing, drop everything and go to sleep. 992 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 993 if (DEBUG_SPEW) { 994 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 995 } 996 997 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 998 || !mBootCompleted || !mSystemReady) { 999 return false; 1000 } 1001 1002 Slog.i(TAG, "Sleeping..."); 1003 1004 mDirty |= DIRTY_WAKEFULNESS; 1005 mWakefulness = WAKEFULNESS_ASLEEP; 1006 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1007 return true; 1008 } 1009 1010 private void setInteractiveStateLocked(boolean interactive, int reason) { 1011 if (mInteractive != interactive) { 1012 finishInteractiveStateChangeLocked(); 1013 1014 mInteractive = interactive; 1015 mInteractiveChanging = true; 1016 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1017 } 1018 } 1019 1020 private void finishInteractiveStateChangeLocked() { 1021 if (mInteractiveChanging) { 1022 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1023 mInteractiveChanging = false; 1024 } 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 finishInteractiveStateChangeLocked(); 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 /** 1080 * Updates the value of mIsPowered. 1081 * Sets DIRTY_IS_POWERED if a change occurred. 1082 */ 1083 private void updateIsPoweredLocked(int dirty) { 1084 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1085 final boolean wasPowered = mIsPowered; 1086 final int oldPlugType = mPlugType; 1087 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1088 mPlugType = mBatteryService.getPlugType(); 1089 mBatteryLevel = mBatteryService.getBatteryLevel(); 1090 1091 if (DEBUG_SPEW) { 1092 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1093 + ", mIsPowered=" + mIsPowered 1094 + ", oldPlugType=" + oldPlugType 1095 + ", mPlugType=" + mPlugType 1096 + ", mBatteryLevel=" + mBatteryLevel); 1097 } 1098 1099 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1100 mDirty |= DIRTY_IS_POWERED; 1101 1102 // Update wireless dock detection state. 1103 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1104 mIsPowered, mPlugType, mBatteryLevel); 1105 1106 // Treat plugging and unplugging the devices as a user activity. 1107 // Users find it disconcerting when they plug or unplug the device 1108 // and it shuts off right away. 1109 // Some devices also wake the device when plugged or unplugged because 1110 // they don't have a charging LED. 1111 final long now = SystemClock.uptimeMillis(); 1112 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1113 dockedOnWirelessCharger)) { 1114 wakeUpNoUpdateLocked(now); 1115 } 1116 userActivityNoUpdateLocked( 1117 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1118 1119 // Tell the notifier whether wireless charging has started so that 1120 // it can provide feedback to the user. 1121 if (dockedOnWirelessCharger) { 1122 mNotifier.onWirelessChargingStarted(); 1123 } 1124 } 1125 } 1126 } 1127 1128 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1129 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1130 // Don't wake when powered unless configured to do so. 1131 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1132 return false; 1133 } 1134 1135 // Don't wake when undocked from wireless charger. 1136 // See WirelessChargerDetector for justification. 1137 if (wasPowered && !mIsPowered 1138 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1139 return false; 1140 } 1141 1142 // Don't wake when docked on wireless charger unless we are certain of it. 1143 // See WirelessChargerDetector for justification. 1144 if (!wasPowered && mIsPowered 1145 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1146 && !dockedOnWirelessCharger) { 1147 return false; 1148 } 1149 1150 // If already dreaming and becoming powered, then don't wake. 1151 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1152 return false; 1153 } 1154 1155 // Otherwise wake up! 1156 return true; 1157 } 1158 1159 /** 1160 * Updates the value of mStayOn. 1161 * Sets DIRTY_STAY_ON if a change occurred. 1162 */ 1163 private void updateStayOnLocked(int dirty) { 1164 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1165 final boolean wasStayOn = mStayOn; 1166 if (mStayOnWhilePluggedInSetting != 0 1167 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1168 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1169 } else { 1170 mStayOn = false; 1171 } 1172 1173 if (mStayOn != wasStayOn) { 1174 mDirty |= DIRTY_STAY_ON; 1175 } 1176 } 1177 } 1178 1179 /** 1180 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1181 * Note that most wake-locks are ignored when the system is asleep. 1182 * 1183 * This function must have no other side-effects. 1184 */ 1185 @SuppressWarnings("deprecation") 1186 private void updateWakeLockSummaryLocked(int dirty) { 1187 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1188 mWakeLockSummary = 0; 1189 1190 final int numWakeLocks = mWakeLocks.size(); 1191 for (int i = 0; i < numWakeLocks; i++) { 1192 final WakeLock wakeLock = mWakeLocks.get(i); 1193 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1194 case PowerManager.PARTIAL_WAKE_LOCK: 1195 mWakeLockSummary |= WAKE_LOCK_CPU; 1196 break; 1197 case PowerManager.FULL_WAKE_LOCK: 1198 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1199 break; 1200 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1201 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1202 break; 1203 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1204 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1205 break; 1206 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1207 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1208 break; 1209 case PowerManager.DOZE_WAKE_LOCK: 1210 mWakeLockSummary |= WAKE_LOCK_DOZE; 1211 break; 1212 } 1213 } 1214 1215 // Cancel wake locks that make no sense based on the current state. 1216 if (mWakefulness != WAKEFULNESS_DOZING) { 1217 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1218 } 1219 if (mWakefulness == WAKEFULNESS_ASLEEP 1220 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1221 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1222 | WAKE_LOCK_BUTTON_BRIGHT); 1223 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1224 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1225 } 1226 } 1227 1228 // Infer implied wake locks where necessary based on the current state. 1229 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1230 if (mWakefulness == WAKEFULNESS_AWAKE) { 1231 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1232 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1233 mWakeLockSummary |= WAKE_LOCK_CPU; 1234 } 1235 } 1236 1237 if (DEBUG_SPEW) { 1238 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1239 + wakefulnessToString(mWakefulness) 1240 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1241 } 1242 } 1243 } 1244 1245 /** 1246 * Updates the value of mUserActivitySummary to summarize the user requested 1247 * state of the system such as whether the screen should be bright or dim. 1248 * Note that user activity is ignored when the system is asleep. 1249 * 1250 * This function must have no other side-effects. 1251 */ 1252 private void updateUserActivitySummaryLocked(long now, int dirty) { 1253 // Update the status of the user activity timeout timer. 1254 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1255 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1256 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1257 1258 long nextTimeout = 0; 1259 if (mWakefulness == WAKEFULNESS_AWAKE 1260 || mWakefulness == WAKEFULNESS_DREAMING 1261 || mWakefulness == WAKEFULNESS_DOZING) { 1262 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1263 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1264 1265 mUserActivitySummary = 0; 1266 if (mLastUserActivityTime >= mLastWakeTime) { 1267 nextTimeout = mLastUserActivityTime 1268 + screenOffTimeout - screenDimDuration; 1269 if (now < nextTimeout) { 1270 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1271 } else { 1272 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1273 if (now < nextTimeout) { 1274 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1275 } 1276 } 1277 } 1278 if (mUserActivitySummary == 0 1279 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1280 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1281 if (now < nextTimeout 1282 && mDisplayPowerRequest.wantScreenOnNormal()) { 1283 mUserActivitySummary = mDisplayPowerRequest.screenState 1284 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1285 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1286 } 1287 } 1288 if (mUserActivitySummary != 0) { 1289 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1290 msg.setAsynchronous(true); 1291 mHandler.sendMessageAtTime(msg, nextTimeout); 1292 } 1293 } else { 1294 mUserActivitySummary = 0; 1295 } 1296 1297 if (DEBUG_SPEW) { 1298 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1299 + wakefulnessToString(mWakefulness) 1300 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1301 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1302 } 1303 } 1304 } 1305 1306 /** 1307 * Called when a user activity timeout has occurred. 1308 * Simply indicates that something about user activity has changed so that the new 1309 * state can be recomputed when the power state is updated. 1310 * 1311 * This function must have no other side-effects besides setting the dirty 1312 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1313 */ 1314 private void handleUserActivityTimeout() { // runs on handler thread 1315 synchronized (mLock) { 1316 if (DEBUG_SPEW) { 1317 Slog.d(TAG, "handleUserActivityTimeout"); 1318 } 1319 1320 mDirty |= DIRTY_USER_ACTIVITY; 1321 updatePowerStateLocked(); 1322 } 1323 } 1324 1325 private int getScreenOffTimeoutLocked() { 1326 int timeout = mScreenOffTimeoutSetting; 1327 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1328 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1329 } 1330 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1331 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1332 } 1333 return Math.max(timeout, MINIMUM_SCREEN_OFF_TIMEOUT); 1334 } 1335 1336 private int getScreenDimDurationLocked(int screenOffTimeout) { 1337 return Math.min(SCREEN_DIM_DURATION, 1338 (int)(screenOffTimeout * MAXIMUM_SCREEN_DIM_RATIO)); 1339 } 1340 1341 /** 1342 * Updates the wakefulness of the device. 1343 * 1344 * This is the function that decides whether the device should start dreaming 1345 * based on the current wake locks and user activity state. It may modify mDirty 1346 * if the wakefulness changes. 1347 * 1348 * Returns true if the wakefulness changed and we need to restart power state calculation. 1349 */ 1350 private boolean updateWakefulnessLocked(int dirty) { 1351 boolean changed = false; 1352 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1353 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1354 | DIRTY_DOCK_STATE)) != 0) { 1355 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1356 if (DEBUG_SPEW) { 1357 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1358 } 1359 final long time = SystemClock.uptimeMillis(); 1360 if (shouldNapAtBedTimeLocked()) { 1361 changed = napNoUpdateLocked(time); 1362 } else { 1363 changed = goToSleepNoUpdateLocked(time, 1364 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1365 } 1366 } 1367 } 1368 return changed; 1369 } 1370 1371 /** 1372 * Returns true if the device should automatically nap and start dreaming when the user 1373 * activity timeout has expired and it's bedtime. 1374 */ 1375 private boolean shouldNapAtBedTimeLocked() { 1376 return mDreamsActivateOnSleepSetting 1377 || (mDreamsActivateOnDockSetting 1378 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1379 } 1380 1381 /** 1382 * Returns true if the device should go to sleep now. 1383 * Also used when exiting a dream to determine whether we should go back 1384 * to being fully awake or else go to sleep for good. 1385 */ 1386 private boolean isItBedTimeYetLocked() { 1387 return mBootCompleted && !isBeingKeptAwakeLocked(); 1388 } 1389 1390 /** 1391 * Returns true if the device is being kept awake by a wake lock, user activity 1392 * or the stay on while powered setting. We also keep the phone awake when 1393 * the proximity sensor returns a positive result so that the device does not 1394 * lock while in a phone call. This function only controls whether the device 1395 * will go to sleep or dream which is independent of whether it will be allowed 1396 * to suspend. 1397 */ 1398 private boolean isBeingKeptAwakeLocked() { 1399 return mStayOn 1400 || mProximityPositive 1401 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1402 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1403 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1404 } 1405 1406 /** 1407 * Determines whether to post a message to the sandman to update the dream state. 1408 */ 1409 private void updateDreamLocked(int dirty) { 1410 if ((dirty & (DIRTY_WAKEFULNESS 1411 | DIRTY_USER_ACTIVITY 1412 | DIRTY_WAKE_LOCKS 1413 | DIRTY_BOOT_COMPLETED 1414 | DIRTY_SETTINGS 1415 | DIRTY_IS_POWERED 1416 | DIRTY_STAY_ON 1417 | DIRTY_PROXIMITY_POSITIVE 1418 | DIRTY_BATTERY_STATE)) != 0) { 1419 scheduleSandmanLocked(); 1420 } 1421 } 1422 1423 private void scheduleSandmanLocked() { 1424 if (!mSandmanScheduled) { 1425 mSandmanScheduled = true; 1426 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1427 msg.setAsynchronous(true); 1428 mHandler.sendMessage(msg); 1429 } 1430 } 1431 1432 /** 1433 * Called when the device enters or exits a dreaming or dozing state. 1434 * 1435 * We do this asynchronously because we must call out of the power manager to start 1436 * the dream and we don't want to hold our lock while doing so. There is a risk that 1437 * the device will wake or go to sleep in the meantime so we have to handle that case. 1438 */ 1439 private void handleSandman() { // runs on handler thread 1440 // Handle preconditions. 1441 final boolean startDreaming; 1442 final int wakefulness; 1443 synchronized (mLock) { 1444 mSandmanScheduled = false; 1445 wakefulness = mWakefulness; 1446 if (mSandmanSummoned) { 1447 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1448 || wakefulness == WAKEFULNESS_DOZING); 1449 mSandmanSummoned = false; 1450 } else { 1451 startDreaming = false; 1452 } 1453 } 1454 1455 // Start dreaming if needed. 1456 // We only control the dream on the handler thread, so we don't need to worry about 1457 // concurrent attempts to start or stop the dream. 1458 final boolean isDreaming; 1459 if (mDreamManager != null) { 1460 // Restart the dream whenever the sandman is summoned. 1461 if (startDreaming) { 1462 mDreamManager.stopDream(); 1463 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1464 } 1465 isDreaming = mDreamManager.isDreaming(); 1466 } else { 1467 isDreaming = false; 1468 } 1469 1470 // Update dream state. 1471 synchronized (mLock) { 1472 // Remember the initial battery level when the dream started. 1473 if (startDreaming && isDreaming) { 1474 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1475 if (wakefulness == WAKEFULNESS_DOZING) { 1476 Slog.i(TAG, "Dozing..."); 1477 } else { 1478 Slog.i(TAG, "Dreaming..."); 1479 } 1480 } 1481 1482 // If preconditions changed, wait for the next iteration to determine 1483 // whether the dream should continue (or be restarted). 1484 if (mSandmanSummoned || mWakefulness != wakefulness) { 1485 return; // wait for next cycle 1486 } 1487 1488 // Determine whether the dream should continue. 1489 if (wakefulness == WAKEFULNESS_DREAMING) { 1490 if (isDreaming && canDreamLocked()) { 1491 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1492 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1493 - mDreamsBatteryLevelDrainCutoffConfig 1494 && !isBeingKeptAwakeLocked()) { 1495 // If the user activity timeout expired and the battery appears 1496 // to be draining faster than it is charging then stop dreaming 1497 // and go to sleep. 1498 Slog.i(TAG, "Stopping dream because the battery appears to " 1499 + "be draining faster than it is charging. " 1500 + "Battery level when dream started: " 1501 + mBatteryLevelWhenDreamStarted + "%. " 1502 + "Battery level now: " + mBatteryLevel + "%."); 1503 } else { 1504 return; // continue dreaming 1505 } 1506 } 1507 1508 // Dream has ended or will be stopped. Update the power state. 1509 if (isItBedTimeYetLocked()) { 1510 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1511 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1512 updatePowerStateLocked(); 1513 } else { 1514 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1515 updatePowerStateLocked(); 1516 } 1517 } else if (wakefulness == WAKEFULNESS_DOZING) { 1518 if (isDreaming) { 1519 return; // continue dozing 1520 } 1521 1522 // Doze has ended or will be stopped. Update the power state. 1523 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1524 updatePowerStateLocked(); 1525 } 1526 } 1527 1528 // Stop dream. 1529 if (isDreaming) { 1530 mDreamManager.stopDream(); 1531 } 1532 } 1533 1534 /** 1535 * Returns true if the device is allowed to dream in its current state. 1536 * This function is not called when dozing. 1537 */ 1538 private boolean canDreamLocked() { 1539 if (mWakefulness != WAKEFULNESS_DREAMING 1540 || !mDreamsSupportedConfig 1541 || !mDreamsEnabledSetting 1542 || !mDisplayPowerRequest.wantScreenOnNormal() 1543 || !mBootCompleted) { 1544 return false; 1545 } 1546 if (!isBeingKeptAwakeLocked()) { 1547 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1548 return false; 1549 } 1550 if (!mIsPowered 1551 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1552 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1553 return false; 1554 } 1555 if (mIsPowered 1556 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1557 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1558 return false; 1559 } 1560 } 1561 return true; 1562 } 1563 1564 private void handleScreenOnBlockerReleased() { 1565 synchronized (mLock) { 1566 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1567 updatePowerStateLocked(); 1568 } 1569 } 1570 1571 /** 1572 * Updates the display power state asynchronously. 1573 * When the update is finished, mDisplayReady will be set to true. The display 1574 * controller posts a message to tell us when the actual display power state 1575 * has been updated so we come back here to double-check and finish up. 1576 * 1577 * This function recalculates the display power state each time. 1578 */ 1579 private void updateDisplayPowerStateLocked(int dirty) { 1580 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1581 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1582 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1583 final int newScreenState = getDesiredScreenPowerStateLocked(); 1584 mDisplayPowerRequest.screenState = newScreenState; 1585 1586 int screenBrightness = mScreenBrightnessSettingDefault; 1587 float screenAutoBrightnessAdjustment = 0.0f; 1588 boolean autoBrightness = (mScreenBrightnessModeSetting == 1589 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1590 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1591 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1592 autoBrightness = false; 1593 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1594 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1595 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1596 screenBrightness = mScreenBrightnessSetting; 1597 } 1598 if (autoBrightness) { 1599 screenBrightness = mScreenBrightnessSettingDefault; 1600 if (isValidAutoBrightnessAdjustment( 1601 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1602 screenAutoBrightnessAdjustment = 1603 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1604 } else if (isValidAutoBrightnessAdjustment( 1605 mScreenAutoBrightnessAdjustmentSetting)) { 1606 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1607 } 1608 } 1609 screenBrightness = Math.max(Math.min(screenBrightness, 1610 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1611 screenAutoBrightnessAdjustment = Math.max(Math.min( 1612 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1613 mDisplayPowerRequest.screenBrightness = screenBrightness; 1614 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1615 screenAutoBrightnessAdjustment; 1616 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1617 1618 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1619 1620 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1621 1622 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1623 mRequestWaitForNegativeProximity); 1624 mRequestWaitForNegativeProximity = false; 1625 1626 if (DEBUG_SPEW) { 1627 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1628 + ", newScreenState=" + newScreenState 1629 + ", mWakefulness=" + mWakefulness 1630 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1631 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1632 + ", mBootCompleted=" + mBootCompleted); 1633 } 1634 } 1635 } 1636 1637 private static boolean isValidBrightness(int value) { 1638 return value >= 0 && value <= 255; 1639 } 1640 1641 private static boolean isValidAutoBrightnessAdjustment(float value) { 1642 // Handles NaN by always returning false. 1643 return value >= -1.0f && value <= 1.0f; 1644 } 1645 1646 private int getDesiredScreenPowerStateLocked() { 1647 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1648 return DisplayPowerRequest.SCREEN_STATE_OFF; 1649 } 1650 1651 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1652 return DisplayPowerRequest.SCREEN_STATE_DOZE; 1653 } 1654 1655 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1656 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1657 || !mBootCompleted) { 1658 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1659 } 1660 1661 return DisplayPowerRequest.SCREEN_STATE_DIM; 1662 } 1663 1664 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1665 new DisplayManagerInternal.DisplayPowerCallbacks() { 1666 private int mDisplayState = Display.STATE_UNKNOWN; 1667 1668 @Override 1669 public void onStateChanged() { 1670 synchronized (mLock) { 1671 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1672 updatePowerStateLocked(); 1673 } 1674 } 1675 1676 @Override 1677 public void onProximityPositive() { 1678 synchronized (mLock) { 1679 mProximityPositive = true; 1680 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1681 updatePowerStateLocked(); 1682 } 1683 } 1684 1685 @Override 1686 public void onProximityNegative() { 1687 synchronized (mLock) { 1688 mProximityPositive = false; 1689 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1690 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1691 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1692 updatePowerStateLocked(); 1693 } 1694 } 1695 1696 @Override 1697 public void onDisplayStateChange(int state) { 1698 // This method is only needed to support legacy display blanking behavior 1699 // where the display's power state is coupled to suspend or to the power HAL. 1700 // The order of operations matters here. 1701 synchronized (mLock) { 1702 if (mDisplayState != state) { 1703 mDisplayState = state; 1704 if (state == Display.STATE_OFF) { 1705 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1706 setHalInteractiveModeLocked(false); 1707 } 1708 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1709 setHalAutoSuspendModeLocked(true); 1710 } 1711 } else { 1712 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1713 setHalAutoSuspendModeLocked(false); 1714 } 1715 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1716 setHalInteractiveModeLocked(true); 1717 } 1718 } 1719 } 1720 } 1721 } 1722 1723 @Override 1724 public void acquireSuspendBlocker() { 1725 mDisplaySuspendBlocker.acquire(); 1726 } 1727 1728 @Override 1729 public void releaseSuspendBlocker() { 1730 mDisplaySuspendBlocker.release(); 1731 } 1732 1733 @Override 1734 public String toString() { 1735 synchronized (this) { 1736 return "state=" + Display.stateToString(mDisplayState); 1737 } 1738 } 1739 }; 1740 1741 private boolean shouldUseProximitySensorLocked() { 1742 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1743 } 1744 1745 /** 1746 * Updates the suspend blocker that keeps the CPU alive. 1747 * 1748 * This function must have no other side-effects. 1749 */ 1750 private void updateSuspendBlockerLocked() { 1751 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1752 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1753 final boolean autoSuspend = !needDisplaySuspendBlocker; 1754 1755 // Disable auto-suspend if needed. 1756 if (!autoSuspend) { 1757 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1758 setHalAutoSuspendModeLocked(false); 1759 } 1760 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1761 setHalInteractiveModeLocked(true); 1762 } 1763 } 1764 1765 // First acquire suspend blockers if needed. 1766 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1767 mWakeLockSuspendBlocker.acquire(); 1768 mHoldingWakeLockSuspendBlocker = true; 1769 } 1770 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1771 mDisplaySuspendBlocker.acquire(); 1772 mHoldingDisplaySuspendBlocker = true; 1773 } 1774 1775 // Then release suspend blockers if needed. 1776 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1777 mWakeLockSuspendBlocker.release(); 1778 mHoldingWakeLockSuspendBlocker = false; 1779 } 1780 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1781 mDisplaySuspendBlocker.release(); 1782 mHoldingDisplaySuspendBlocker = false; 1783 } 1784 1785 // Enable auto-suspend if needed. 1786 if (autoSuspend) { 1787 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1788 setHalInteractiveModeLocked(false); 1789 } 1790 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1791 setHalAutoSuspendModeLocked(true); 1792 } 1793 } 1794 } 1795 1796 /** 1797 * Return true if we must keep a suspend blocker active on behalf of the display. 1798 * We do so if the screen is on or is in transition between states. 1799 */ 1800 private boolean needDisplaySuspendBlockerLocked() { 1801 if (!mDisplayReady) { 1802 return true; 1803 } 1804 if (mDisplayPowerRequest.wantScreenOnNormal()) { 1805 // If we asked for the screen to be on but it is off due to the proximity 1806 // sensor then we may suspend but only if the configuration allows it. 1807 // On some hardware it may not be safe to suspend because the proximity 1808 // sensor may not be correctly configured as a wake-up source. 1809 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1810 || !mSuspendWhenScreenOffDueToProximityConfig) { 1811 return true; 1812 } 1813 } 1814 // Let the system suspend if the screen is off or dozing. 1815 return false; 1816 } 1817 1818 private void setHalAutoSuspendModeLocked(boolean enable) { 1819 if (enable != mHalAutoSuspendModeEnabled) { 1820 if (DEBUG) { 1821 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 1822 } 1823 mHalAutoSuspendModeEnabled = enable; 1824 nativeSetAutoSuspend(enable); 1825 } 1826 } 1827 1828 private void setHalInteractiveModeLocked(boolean enable) { 1829 if (enable != mHalInteractiveModeEnabled) { 1830 if (DEBUG) { 1831 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 1832 } 1833 mHalInteractiveModeEnabled = enable; 1834 nativeSetInteractive(enable); 1835 } 1836 } 1837 1838 private boolean isInteractiveInternal() { 1839 synchronized (mLock) { 1840 return mInteractive; 1841 } 1842 } 1843 1844 private void handleBatteryStateChangedLocked() { 1845 mDirty |= DIRTY_BATTERY_STATE; 1846 updatePowerStateLocked(); 1847 } 1848 1849 private void startWatchingForBootAnimationFinished() { 1850 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1851 } 1852 1853 private void checkIfBootAnimationFinished() { 1854 if (DEBUG) { 1855 Slog.d(TAG, "Check if boot animation finished..."); 1856 } 1857 1858 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1859 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1860 BOOT_ANIMATION_POLL_INTERVAL); 1861 return; 1862 } 1863 1864 synchronized (mLock) { 1865 if (!mBootCompleted) { 1866 Slog.i(TAG, "Boot animation finished."); 1867 handleBootCompletedLocked(); 1868 } 1869 } 1870 } 1871 1872 private void handleBootCompletedLocked() { 1873 final long now = SystemClock.uptimeMillis(); 1874 mBootCompleted = true; 1875 mDirty |= DIRTY_BOOT_COMPLETED; 1876 userActivityNoUpdateLocked( 1877 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1878 updatePowerStateLocked(); 1879 } 1880 1881 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1882 final String reason, boolean wait) { 1883 if (mHandler == null || !mSystemReady) { 1884 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1885 } 1886 1887 Runnable runnable = new Runnable() { 1888 @Override 1889 public void run() { 1890 synchronized (this) { 1891 if (shutdown) { 1892 ShutdownThread.shutdown(mContext, confirm); 1893 } else { 1894 ShutdownThread.reboot(mContext, reason, confirm); 1895 } 1896 } 1897 } 1898 }; 1899 1900 // ShutdownThread must run on a looper capable of displaying the UI. 1901 Message msg = Message.obtain(mHandler, runnable); 1902 msg.setAsynchronous(true); 1903 mHandler.sendMessage(msg); 1904 1905 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 1906 if (wait) { 1907 synchronized (runnable) { 1908 while (true) { 1909 try { 1910 runnable.wait(); 1911 } catch (InterruptedException e) { 1912 } 1913 } 1914 } 1915 } 1916 } 1917 1918 private void crashInternal(final String message) { 1919 Thread t = new Thread("PowerManagerService.crash()") { 1920 @Override 1921 public void run() { 1922 throw new RuntimeException(message); 1923 } 1924 }; 1925 try { 1926 t.start(); 1927 t.join(); 1928 } catch (InterruptedException e) { 1929 Log.wtf(TAG, e); 1930 } 1931 } 1932 1933 private void setStayOnSettingInternal(int val) { 1934 Settings.Global.putInt(mContext.getContentResolver(), 1935 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 1936 } 1937 1938 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 1939 synchronized (mLock) { 1940 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 1941 mDirty |= DIRTY_SETTINGS; 1942 updatePowerStateLocked(); 1943 } 1944 } 1945 1946 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 1947 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 1948 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 1949 } 1950 1951 private void setAttentionLightInternal(boolean on, int color) { 1952 Light light; 1953 synchronized (mLock) { 1954 if (!mSystemReady) { 1955 return; 1956 } 1957 light = mAttentionLight; 1958 } 1959 1960 // Control light outside of lock. 1961 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 1962 } 1963 1964 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 1965 synchronized (mLock) { 1966 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 1967 mScreenBrightnessOverrideFromWindowManager = brightness; 1968 mDirty |= DIRTY_SETTINGS; 1969 updatePowerStateLocked(); 1970 } 1971 } 1972 } 1973 1974 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 1975 synchronized (mLock) { 1976 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 1977 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 1978 mDirty |= DIRTY_SETTINGS; 1979 updatePowerStateLocked(); 1980 } 1981 } 1982 } 1983 1984 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 1985 synchronized (mLock) { 1986 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 1987 mTemporaryScreenBrightnessSettingOverride = brightness; 1988 mDirty |= DIRTY_SETTINGS; 1989 updatePowerStateLocked(); 1990 } 1991 } 1992 } 1993 1994 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 1995 synchronized (mLock) { 1996 // Note: This condition handles NaN because NaN is not equal to any other 1997 // value, including itself. 1998 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 1999 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2000 mDirty |= DIRTY_SETTINGS; 2001 updatePowerStateLocked(); 2002 } 2003 } 2004 } 2005 2006 /** 2007 * Low-level function turn the device off immediately, without trying 2008 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2009 */ 2010 public static void lowLevelShutdown() { 2011 SystemProperties.set("sys.powerctl", "shutdown"); 2012 } 2013 2014 /** 2015 * Low-level function to reboot the device. On success, this 2016 * function doesn't return. If more than 20 seconds passes from 2017 * the time a reboot is requested (120 seconds for reboot to 2018 * recovery), this method returns. 2019 * 2020 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2021 */ 2022 public static void lowLevelReboot(String reason) { 2023 if (reason == null) { 2024 reason = ""; 2025 } 2026 long duration; 2027 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2028 // If we are rebooting to go into recovery, instead of 2029 // setting sys.powerctl directly we'll start the 2030 // pre-recovery service which will do some preparation for 2031 // recovery and then reboot for us. 2032 // 2033 // This preparation can take more than 20 seconds if 2034 // there's a very large update package, so lengthen the 2035 // timeout. 2036 SystemProperties.set("ctl.start", "pre-recovery"); 2037 duration = 120 * 1000L; 2038 } else { 2039 SystemProperties.set("sys.powerctl", "reboot," + reason); 2040 duration = 20 * 1000L; 2041 } 2042 try { 2043 Thread.sleep(duration); 2044 } catch (InterruptedException e) { 2045 Thread.currentThread().interrupt(); 2046 } 2047 } 2048 2049 @Override // Watchdog.Monitor implementation 2050 public void monitor() { 2051 // Grab and release lock for watchdog monitor to detect deadlocks. 2052 synchronized (mLock) { 2053 } 2054 } 2055 2056 private void dumpInternal(PrintWriter pw) { 2057 pw.println("POWER MANAGER (dumpsys power)\n"); 2058 2059 final WirelessChargerDetector wcd; 2060 synchronized (mLock) { 2061 pw.println("Power Manager State:"); 2062 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2063 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2064 pw.println(" mInteractive=" + mInteractive); 2065 pw.println(" mIsPowered=" + mIsPowered); 2066 pw.println(" mPlugType=" + mPlugType); 2067 pw.println(" mBatteryLevel=" + mBatteryLevel); 2068 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2069 pw.println(" mDockState=" + mDockState); 2070 pw.println(" mStayOn=" + mStayOn); 2071 pw.println(" mProximityPositive=" + mProximityPositive); 2072 pw.println(" mBootCompleted=" + mBootCompleted); 2073 pw.println(" mSystemReady=" + mSystemReady); 2074 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2075 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2076 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2077 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2078 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2079 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2080 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2081 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2082 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2083 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2084 pw.println(" mLastUserActivityTimeNoChangeLights=" 2085 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2086 pw.println(" mDisplayReady=" + mDisplayReady); 2087 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2088 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2089 2090 pw.println(); 2091 pw.println("Settings and Configuration:"); 2092 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2093 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2094 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2095 + mDecoupleHalInteractiveModeFromDisplayConfig); 2096 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2097 + mWakeUpWhenPluggedOrUnpluggedConfig); 2098 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2099 + mSuspendWhenScreenOffDueToProximityConfig); 2100 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2101 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2102 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2103 + mDreamsActivatedOnSleepByDefaultConfig); 2104 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2105 + mDreamsActivatedOnDockByDefaultConfig); 2106 pw.println(" mDreamsEnabledOnBatteryConfig=" 2107 + mDreamsEnabledOnBatteryConfig); 2108 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2109 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2110 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2111 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2112 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2113 + mDreamsBatteryLevelDrainCutoffConfig); 2114 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2115 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2116 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2117 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2118 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2119 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2120 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2121 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2122 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2123 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2124 + mScreenAutoBrightnessAdjustmentSetting); 2125 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2126 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2127 + mScreenBrightnessOverrideFromWindowManager); 2128 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2129 + mUserActivityTimeoutOverrideFromWindowManager); 2130 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2131 + mTemporaryScreenBrightnessSettingOverride); 2132 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2133 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2134 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2135 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2136 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2137 2138 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2139 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2140 pw.println(); 2141 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2142 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2143 2144 pw.println(); 2145 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2146 for (WakeLock wl : mWakeLocks) { 2147 pw.println(" " + wl); 2148 } 2149 2150 pw.println(); 2151 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2152 for (SuspendBlocker sb : mSuspendBlockers) { 2153 pw.println(" " + sb); 2154 } 2155 2156 pw.println(); 2157 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2158 2159 pw.println(); 2160 pw.println("Display Power: " + mDisplayPowerCallbacks); 2161 2162 wcd = mWirelessChargerDetector; 2163 } 2164 2165 if (wcd != null) { 2166 wcd.dump(pw); 2167 } 2168 } 2169 2170 private SuspendBlocker createSuspendBlockerLocked(String name) { 2171 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2172 mSuspendBlockers.add(suspendBlocker); 2173 return suspendBlocker; 2174 } 2175 2176 private static String wakefulnessToString(int wakefulness) { 2177 switch (wakefulness) { 2178 case WAKEFULNESS_ASLEEP: 2179 return "Asleep"; 2180 case WAKEFULNESS_AWAKE: 2181 return "Awake"; 2182 case WAKEFULNESS_DREAMING: 2183 return "Dreaming"; 2184 case WAKEFULNESS_DOZING: 2185 return "Dozing"; 2186 default: 2187 return Integer.toString(wakefulness); 2188 } 2189 } 2190 2191 private static WorkSource copyWorkSource(WorkSource workSource) { 2192 return workSource != null ? new WorkSource(workSource) : null; 2193 } 2194 2195 private final class BatteryReceiver extends BroadcastReceiver { 2196 @Override 2197 public void onReceive(Context context, Intent intent) { 2198 synchronized (mLock) { 2199 handleBatteryStateChangedLocked(); 2200 } 2201 } 2202 } 2203 2204 private final class BootCompletedReceiver extends BroadcastReceiver { 2205 @Override 2206 public void onReceive(Context context, Intent intent) { 2207 // This is our early signal that the system thinks it has finished booting. 2208 // However, the boot animation may still be running for a few more seconds 2209 // since it is ultimately in charge of when it terminates. 2210 // Defer transitioning into the boot completed state until the animation exits. 2211 // We do this so that the screen does not start to dim prematurely before 2212 // the user has actually had a chance to interact with the device. 2213 startWatchingForBootAnimationFinished(); 2214 } 2215 } 2216 2217 private final class DreamReceiver extends BroadcastReceiver { 2218 @Override 2219 public void onReceive(Context context, Intent intent) { 2220 synchronized (mLock) { 2221 scheduleSandmanLocked(); 2222 } 2223 } 2224 } 2225 2226 private final class UserSwitchedReceiver extends BroadcastReceiver { 2227 @Override 2228 public void onReceive(Context context, Intent intent) { 2229 synchronized (mLock) { 2230 handleSettingsChangedLocked(); 2231 } 2232 } 2233 } 2234 2235 private final class DockReceiver extends BroadcastReceiver { 2236 @Override 2237 public void onReceive(Context context, Intent intent) { 2238 synchronized (mLock) { 2239 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2240 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2241 if (mDockState != dockState) { 2242 mDockState = dockState; 2243 mDirty |= DIRTY_DOCK_STATE; 2244 updatePowerStateLocked(); 2245 } 2246 } 2247 } 2248 } 2249 2250 private final class SettingsObserver extends ContentObserver { 2251 public SettingsObserver(Handler handler) { 2252 super(handler); 2253 } 2254 2255 @Override 2256 public void onChange(boolean selfChange, Uri uri) { 2257 synchronized (mLock) { 2258 handleSettingsChangedLocked(); 2259 } 2260 } 2261 } 2262 2263 /** 2264 * Handler for asynchronous operations performed by the power manager. 2265 */ 2266 private final class PowerManagerHandler extends Handler { 2267 public PowerManagerHandler(Looper looper) { 2268 super(looper, null, true /*async*/); 2269 } 2270 2271 @Override 2272 public void handleMessage(Message msg) { 2273 switch (msg.what) { 2274 case MSG_USER_ACTIVITY_TIMEOUT: 2275 handleUserActivityTimeout(); 2276 break; 2277 case MSG_SANDMAN: 2278 handleSandman(); 2279 break; 2280 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2281 handleScreenOnBlockerReleased(); 2282 break; 2283 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2284 checkIfBootAnimationFinished(); 2285 break; 2286 } 2287 } 2288 } 2289 2290 /** 2291 * Represents a wake lock that has been acquired by an application. 2292 */ 2293 private final class WakeLock implements IBinder.DeathRecipient { 2294 public final IBinder mLock; 2295 public int mFlags; 2296 public String mTag; 2297 public final String mPackageName; 2298 public WorkSource mWorkSource; 2299 public String mHistoryTag; 2300 public final int mOwnerUid; 2301 public final int mOwnerPid; 2302 public boolean mNotifiedAcquired; 2303 2304 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2305 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2306 mLock = lock; 2307 mFlags = flags; 2308 mTag = tag; 2309 mPackageName = packageName; 2310 mWorkSource = copyWorkSource(workSource); 2311 mHistoryTag = historyTag; 2312 mOwnerUid = ownerUid; 2313 mOwnerPid = ownerPid; 2314 } 2315 2316 @Override 2317 public void binderDied() { 2318 PowerManagerService.this.handleWakeLockDeath(this); 2319 } 2320 2321 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2322 int ownerUid, int ownerPid) { 2323 return mFlags == flags 2324 && mTag.equals(tag) 2325 && hasSameWorkSource(workSource) 2326 && mOwnerUid == ownerUid 2327 && mOwnerPid == ownerPid; 2328 } 2329 2330 public void updateProperties(int flags, String tag, String packageName, 2331 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2332 if (!mPackageName.equals(packageName)) { 2333 throw new IllegalStateException("Existing wake lock package name changed: " 2334 + mPackageName + " to " + packageName); 2335 } 2336 if (mOwnerUid != ownerUid) { 2337 throw new IllegalStateException("Existing wake lock uid changed: " 2338 + mOwnerUid + " to " + ownerUid); 2339 } 2340 if (mOwnerPid != ownerPid) { 2341 throw new IllegalStateException("Existing wake lock pid changed: " 2342 + mOwnerPid + " to " + ownerPid); 2343 } 2344 mFlags = flags; 2345 mTag = tag; 2346 updateWorkSource(workSource); 2347 mHistoryTag = historyTag; 2348 } 2349 2350 public boolean hasSameWorkSource(WorkSource workSource) { 2351 return Objects.equal(mWorkSource, workSource); 2352 } 2353 2354 public void updateWorkSource(WorkSource workSource) { 2355 mWorkSource = copyWorkSource(workSource); 2356 } 2357 2358 @Override 2359 public String toString() { 2360 return getLockLevelString() 2361 + " '" + mTag + "'" + getLockFlagsString() 2362 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2363 } 2364 2365 @SuppressWarnings("deprecation") 2366 private String getLockLevelString() { 2367 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2368 case PowerManager.FULL_WAKE_LOCK: 2369 return "FULL_WAKE_LOCK "; 2370 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2371 return "SCREEN_BRIGHT_WAKE_LOCK "; 2372 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2373 return "SCREEN_DIM_WAKE_LOCK "; 2374 case PowerManager.PARTIAL_WAKE_LOCK: 2375 return "PARTIAL_WAKE_LOCK "; 2376 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2377 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2378 case PowerManager.DOZE_WAKE_LOCK: 2379 return "DOZE_WAKE_LOCK "; 2380 default: 2381 return "??? "; 2382 } 2383 } 2384 2385 private String getLockFlagsString() { 2386 String result = ""; 2387 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2388 result += " ACQUIRE_CAUSES_WAKEUP"; 2389 } 2390 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2391 result += " ON_AFTER_RELEASE"; 2392 } 2393 return result; 2394 } 2395 } 2396 2397 private final class SuspendBlockerImpl implements SuspendBlocker { 2398 private final String mName; 2399 private int mReferenceCount; 2400 2401 public SuspendBlockerImpl(String name) { 2402 mName = name; 2403 } 2404 2405 @Override 2406 protected void finalize() throws Throwable { 2407 try { 2408 if (mReferenceCount != 0) { 2409 Log.wtf(TAG, "Suspend blocker \"" + mName 2410 + "\" was finalized without being released!"); 2411 mReferenceCount = 0; 2412 nativeReleaseSuspendBlocker(mName); 2413 } 2414 } finally { 2415 super.finalize(); 2416 } 2417 } 2418 2419 @Override 2420 public void acquire() { 2421 synchronized (this) { 2422 mReferenceCount += 1; 2423 if (mReferenceCount == 1) { 2424 if (DEBUG_SPEW) { 2425 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2426 } 2427 nativeAcquireSuspendBlocker(mName); 2428 } 2429 } 2430 } 2431 2432 @Override 2433 public void release() { 2434 synchronized (this) { 2435 mReferenceCount -= 1; 2436 if (mReferenceCount == 0) { 2437 if (DEBUG_SPEW) { 2438 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2439 } 2440 nativeReleaseSuspendBlocker(mName); 2441 } else if (mReferenceCount < 0) { 2442 Log.wtf(TAG, "Suspend blocker \"" + mName 2443 + "\" was released without being acquired!", new Throwable()); 2444 mReferenceCount = 0; 2445 } 2446 } 2447 } 2448 2449 @Override 2450 public String toString() { 2451 synchronized (this) { 2452 return mName + ": ref count=" + mReferenceCount; 2453 } 2454 } 2455 } 2456 2457 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2458 private int mNestCount; 2459 2460 public boolean isHeld() { 2461 synchronized (this) { 2462 return mNestCount != 0; 2463 } 2464 } 2465 2466 @Override 2467 public void acquire() { 2468 synchronized (this) { 2469 mNestCount += 1; 2470 if (DEBUG) { 2471 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2472 } 2473 } 2474 } 2475 2476 @Override 2477 public void release() { 2478 synchronized (this) { 2479 mNestCount -= 1; 2480 if (mNestCount < 0) { 2481 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2482 new Throwable()); 2483 mNestCount = 0; 2484 } 2485 if (mNestCount == 0) { 2486 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2487 } 2488 if (DEBUG) { 2489 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2490 } 2491 } 2492 } 2493 2494 @Override 2495 public String toString() { 2496 synchronized (this) { 2497 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2498 } 2499 } 2500 } 2501 2502 private final class BinderService extends IPowerManager.Stub { 2503 @Override // Binder call 2504 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2505 String packageName, int uid) { 2506 if (uid < 0) { 2507 uid = Binder.getCallingUid(); 2508 } 2509 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2510 } 2511 2512 @Override // Binder call 2513 public void powerHint(int hintId, int data) { 2514 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2515 nativeSendPowerHint(hintId, data); 2516 } 2517 2518 @Override // Binder call 2519 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2520 WorkSource ws, String historyTag) { 2521 if (lock == null) { 2522 throw new IllegalArgumentException("lock must not be null"); 2523 } 2524 if (packageName == null) { 2525 throw new IllegalArgumentException("packageName must not be null"); 2526 } 2527 PowerManager.validateWakeLockParameters(flags, tag); 2528 2529 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2530 if (ws != null && ws.size() != 0) { 2531 mContext.enforceCallingOrSelfPermission( 2532 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2533 } else { 2534 ws = null; 2535 } 2536 2537 final int uid = Binder.getCallingUid(); 2538 final int pid = Binder.getCallingPid(); 2539 final long ident = Binder.clearCallingIdentity(); 2540 try { 2541 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2542 } finally { 2543 Binder.restoreCallingIdentity(ident); 2544 } 2545 } 2546 2547 @Override // Binder call 2548 public void releaseWakeLock(IBinder lock, int flags) { 2549 if (lock == null) { 2550 throw new IllegalArgumentException("lock must not be null"); 2551 } 2552 2553 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2554 2555 final long ident = Binder.clearCallingIdentity(); 2556 try { 2557 releaseWakeLockInternal(lock, flags); 2558 } finally { 2559 Binder.restoreCallingIdentity(ident); 2560 } 2561 } 2562 2563 @Override // Binder call 2564 public void updateWakeLockUids(IBinder lock, int[] uids) { 2565 WorkSource ws = null; 2566 2567 if (uids != null) { 2568 ws = new WorkSource(); 2569 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2570 // one at a time? 2571 for (int i = 0; i < uids.length; i++) { 2572 ws.add(uids[i]); 2573 } 2574 } 2575 updateWakeLockWorkSource(lock, ws, null); 2576 } 2577 2578 @Override // Binder call 2579 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2580 if (lock == null) { 2581 throw new IllegalArgumentException("lock must not be null"); 2582 } 2583 2584 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2585 if (ws != null && ws.size() != 0) { 2586 mContext.enforceCallingOrSelfPermission( 2587 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2588 } else { 2589 ws = null; 2590 } 2591 2592 final long ident = Binder.clearCallingIdentity(); 2593 try { 2594 updateWakeLockWorkSourceInternal(lock, ws, historyTag); 2595 } finally { 2596 Binder.restoreCallingIdentity(ident); 2597 } 2598 } 2599 2600 @Override // Binder call 2601 public boolean isWakeLockLevelSupported(int level) { 2602 final long ident = Binder.clearCallingIdentity(); 2603 try { 2604 return isWakeLockLevelSupportedInternal(level); 2605 } finally { 2606 Binder.restoreCallingIdentity(ident); 2607 } 2608 } 2609 2610 @Override // Binder call 2611 public void userActivity(long eventTime, int event, int flags) { 2612 final long now = SystemClock.uptimeMillis(); 2613 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2614 != PackageManager.PERMISSION_GRANTED) { 2615 // Once upon a time applications could call userActivity(). 2616 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2617 // request instead of throwing a SecurityException so we don't break old apps. 2618 synchronized (mLock) { 2619 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2620 mLastWarningAboutUserActivityPermission = now; 2621 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2622 + "caller does not have DEVICE_POWER permission. " 2623 + "Please fix your app! " 2624 + " pid=" + Binder.getCallingPid() 2625 + " uid=" + Binder.getCallingUid()); 2626 } 2627 } 2628 return; 2629 } 2630 2631 if (eventTime > SystemClock.uptimeMillis()) { 2632 throw new IllegalArgumentException("event time must not be in the future"); 2633 } 2634 2635 final int uid = Binder.getCallingUid(); 2636 final long ident = Binder.clearCallingIdentity(); 2637 try { 2638 userActivityInternal(eventTime, event, flags, uid); 2639 } finally { 2640 Binder.restoreCallingIdentity(ident); 2641 } 2642 } 2643 2644 @Override // Binder call 2645 public void wakeUp(long eventTime) { 2646 if (eventTime > SystemClock.uptimeMillis()) { 2647 throw new IllegalArgumentException("event time must not be in the future"); 2648 } 2649 2650 mContext.enforceCallingOrSelfPermission( 2651 android.Manifest.permission.DEVICE_POWER, null); 2652 2653 final long ident = Binder.clearCallingIdentity(); 2654 try { 2655 wakeUpInternal(eventTime); 2656 } finally { 2657 Binder.restoreCallingIdentity(ident); 2658 } 2659 } 2660 2661 @Override // Binder call 2662 public void goToSleep(long eventTime, int reason) { 2663 if (eventTime > SystemClock.uptimeMillis()) { 2664 throw new IllegalArgumentException("event time must not be in the future"); 2665 } 2666 2667 mContext.enforceCallingOrSelfPermission( 2668 android.Manifest.permission.DEVICE_POWER, null); 2669 2670 final long ident = Binder.clearCallingIdentity(); 2671 try { 2672 goToSleepInternal(eventTime, reason); 2673 } finally { 2674 Binder.restoreCallingIdentity(ident); 2675 } 2676 } 2677 2678 @Override // Binder call 2679 public void nap(long eventTime) { 2680 if (eventTime > SystemClock.uptimeMillis()) { 2681 throw new IllegalArgumentException("event time must not be in the future"); 2682 } 2683 2684 mContext.enforceCallingOrSelfPermission( 2685 android.Manifest.permission.DEVICE_POWER, null); 2686 2687 final long ident = Binder.clearCallingIdentity(); 2688 try { 2689 napInternal(eventTime); 2690 } finally { 2691 Binder.restoreCallingIdentity(ident); 2692 } 2693 } 2694 2695 @Override // Binder call 2696 public boolean isInteractive() { 2697 final long ident = Binder.clearCallingIdentity(); 2698 try { 2699 return isInteractiveInternal(); 2700 } finally { 2701 Binder.restoreCallingIdentity(ident); 2702 } 2703 } 2704 2705 /** 2706 * Reboots the device. 2707 * 2708 * @param confirm If true, shows a reboot confirmation dialog. 2709 * @param reason The reason for the reboot, or null if none. 2710 * @param wait If true, this call waits for the reboot to complete and does not return. 2711 */ 2712 @Override // Binder call 2713 public void reboot(boolean confirm, String reason, boolean wait) { 2714 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2715 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2716 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2717 } 2718 2719 final long ident = Binder.clearCallingIdentity(); 2720 try { 2721 shutdownOrRebootInternal(false, confirm, reason, wait); 2722 } finally { 2723 Binder.restoreCallingIdentity(ident); 2724 } 2725 } 2726 2727 /** 2728 * Shuts down the device. 2729 * 2730 * @param confirm If true, shows a shutdown confirmation dialog. 2731 * @param wait If true, this call waits for the shutdown to complete and does not return. 2732 */ 2733 @Override // Binder call 2734 public void shutdown(boolean confirm, boolean wait) { 2735 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2736 2737 final long ident = Binder.clearCallingIdentity(); 2738 try { 2739 shutdownOrRebootInternal(true, confirm, null, wait); 2740 } finally { 2741 Binder.restoreCallingIdentity(ident); 2742 } 2743 } 2744 2745 /** 2746 * Crash the runtime (causing a complete restart of the Android framework). 2747 * Requires REBOOT permission. Mostly for testing. Should not return. 2748 */ 2749 @Override // Binder call 2750 public void crash(String message) { 2751 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2752 2753 final long ident = Binder.clearCallingIdentity(); 2754 try { 2755 crashInternal(message); 2756 } finally { 2757 Binder.restoreCallingIdentity(ident); 2758 } 2759 } 2760 2761 /** 2762 * Set the setting that determines whether the device stays on when plugged in. 2763 * The argument is a bit string, with each bit specifying a power source that, 2764 * when the device is connected to that source, causes the device to stay on. 2765 * See {@link android.os.BatteryManager} for the list of power sources that 2766 * can be specified. Current values include 2767 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2768 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2769 * 2770 * Used by "adb shell svc power stayon ..." 2771 * 2772 * @param val an {@code int} containing the bits that specify which power sources 2773 * should cause the device to stay on. 2774 */ 2775 @Override // Binder call 2776 public void setStayOnSetting(int val) { 2777 mContext.enforceCallingOrSelfPermission( 2778 android.Manifest.permission.WRITE_SETTINGS, null); 2779 2780 final long ident = Binder.clearCallingIdentity(); 2781 try { 2782 setStayOnSettingInternal(val); 2783 } finally { 2784 Binder.restoreCallingIdentity(ident); 2785 } 2786 } 2787 2788 /** 2789 * Used by device administration to set the maximum screen off timeout. 2790 * 2791 * This method must only be called by the device administration policy manager. 2792 */ 2793 @Override // Binder call 2794 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2795 final long ident = Binder.clearCallingIdentity(); 2796 try { 2797 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2798 } finally { 2799 Binder.restoreCallingIdentity(ident); 2800 } 2801 } 2802 2803 /** 2804 * Used by the settings application and brightness control widgets to 2805 * temporarily override the current screen brightness setting so that the 2806 * user can observe the effect of an intended settings change without applying 2807 * it immediately. 2808 * 2809 * The override will be canceled when the setting value is next updated. 2810 * 2811 * @param brightness The overridden brightness. 2812 * 2813 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2814 */ 2815 @Override // Binder call 2816 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2817 mContext.enforceCallingOrSelfPermission( 2818 android.Manifest.permission.DEVICE_POWER, null); 2819 2820 final long ident = Binder.clearCallingIdentity(); 2821 try { 2822 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2823 } finally { 2824 Binder.restoreCallingIdentity(ident); 2825 } 2826 } 2827 2828 /** 2829 * Used by the settings application and brightness control widgets to 2830 * temporarily override the current screen auto-brightness adjustment setting so that the 2831 * user can observe the effect of an intended settings change without applying 2832 * it immediately. 2833 * 2834 * The override will be canceled when the setting value is next updated. 2835 * 2836 * @param adj The overridden brightness, or Float.NaN to disable the override. 2837 * 2838 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2839 */ 2840 @Override // Binder call 2841 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2842 mContext.enforceCallingOrSelfPermission( 2843 android.Manifest.permission.DEVICE_POWER, null); 2844 2845 final long ident = Binder.clearCallingIdentity(); 2846 try { 2847 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2848 } finally { 2849 Binder.restoreCallingIdentity(ident); 2850 } 2851 } 2852 2853 /** 2854 * Used by the phone application to make the attention LED flash when ringing. 2855 */ 2856 @Override // Binder call 2857 public void setAttentionLight(boolean on, int color) { 2858 mContext.enforceCallingOrSelfPermission( 2859 android.Manifest.permission.DEVICE_POWER, null); 2860 2861 final long ident = Binder.clearCallingIdentity(); 2862 try { 2863 setAttentionLightInternal(on, color); 2864 } finally { 2865 Binder.restoreCallingIdentity(ident); 2866 } 2867 } 2868 2869 @Override // Binder call 2870 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2871 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2872 != PackageManager.PERMISSION_GRANTED) { 2873 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2874 + Binder.getCallingPid() 2875 + ", uid=" + Binder.getCallingUid()); 2876 return; 2877 } 2878 2879 final long ident = Binder.clearCallingIdentity(); 2880 try { 2881 dumpInternal(pw); 2882 } finally { 2883 Binder.restoreCallingIdentity(ident); 2884 } 2885 } 2886 } 2887 2888 private final class LocalService extends PowerManagerInternal { 2889 /** 2890 * Used by the window manager to override the screen brightness based on the 2891 * current foreground activity. 2892 * 2893 * This method must only be called by the window manager. 2894 * 2895 * @param brightness The overridden brightness, or -1 to disable the override. 2896 */ 2897 @Override 2898 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 2899 mContext.enforceCallingOrSelfPermission( 2900 android.Manifest.permission.DEVICE_POWER, null); 2901 2902 final long ident = Binder.clearCallingIdentity(); 2903 try { 2904 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 2905 } finally { 2906 Binder.restoreCallingIdentity(ident); 2907 } 2908 } 2909 2910 /** 2911 * Used by the window manager to override the button brightness based on the 2912 * current foreground activity. 2913 * 2914 * This method must only be called by the window manager. 2915 * 2916 * @param brightness The overridden brightness, or -1 to disable the override. 2917 */ 2918 @Override 2919 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 2920 // Do nothing. 2921 // Button lights are not currently supported in the new implementation. 2922 mContext.enforceCallingOrSelfPermission( 2923 android.Manifest.permission.DEVICE_POWER, null); 2924 } 2925 2926 /** 2927 * Used by the window manager to override the user activity timeout based on the 2928 * current foreground activity. It can only be used to make the timeout shorter 2929 * than usual, not longer. 2930 * 2931 * This method must only be called by the window manager. 2932 * 2933 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 2934 */ 2935 @Override 2936 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 2937 mContext.enforceCallingOrSelfPermission( 2938 android.Manifest.permission.DEVICE_POWER, null); 2939 2940 final long ident = Binder.clearCallingIdentity(); 2941 try { 2942 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 2943 } finally { 2944 Binder.restoreCallingIdentity(ident); 2945 } 2946 } 2947 2948 @Override 2949 public void setPolicy(WindowManagerPolicy policy) { 2950 PowerManagerService.this.setPolicy(policy); 2951 } 2952 } 2953} 2954