PowerManagerService.java revision e5167ca61e2c5607aad9041b44158581bc61b4d8
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.power; 18 19import com.android.internal.app.IAppOpsService; 20import com.android.internal.app.IBatteryStats; 21import com.android.server.BatteryService; 22import com.android.server.EventLogTags; 23import com.android.server.LocalServices; 24import com.android.server.ServiceThread; 25import com.android.server.lights.Light; 26import com.android.server.lights.LightsManager; 27import com.android.server.twilight.TwilightManager; 28import com.android.server.Watchdog; 29 30import android.Manifest; 31import android.content.BroadcastReceiver; 32import android.content.ContentResolver; 33import android.content.Context; 34import android.content.Intent; 35import android.content.IntentFilter; 36import android.content.pm.PackageManager; 37import android.content.res.Resources; 38import android.database.ContentObserver; 39import android.hardware.SensorManager; 40import android.hardware.SystemSensorManager; 41import android.hardware.display.DisplayManagerInternal; 42import android.net.Uri; 43import android.os.BatteryManager; 44import android.os.Binder; 45import android.os.Handler; 46import android.os.IBinder; 47import android.os.IPowerManager; 48import android.os.Looper; 49import android.os.Message; 50import android.os.PowerManager; 51import android.os.PowerManagerInternal; 52import android.os.Process; 53import android.os.RemoteException; 54import android.os.SystemClock; 55import android.os.SystemProperties; 56import android.os.SystemService; 57import android.os.UserHandle; 58import android.os.WorkSource; 59import android.provider.Settings; 60import android.service.dreams.DreamManagerInternal; 61import android.util.EventLog; 62import android.util.Log; 63import android.util.Slog; 64import android.util.TimeUtils; 65import android.view.WindowManagerPolicy; 66 67import java.io.FileDescriptor; 68import java.io.PrintWriter; 69import java.util.ArrayList; 70 71import libcore.util.Objects; 72 73/** 74 * The power manager service is responsible for coordinating power management 75 * functions on the device. 76 */ 77public final class PowerManagerService extends com.android.server.SystemService 78 implements Watchdog.Monitor { 79 private static final String TAG = "PowerManagerService"; 80 81 private static final boolean DEBUG = false; 82 private static final boolean DEBUG_SPEW = DEBUG && true; 83 84 // Message: Sent when a user activity timeout occurs to update the power state. 85 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 86 // Message: Sent when the device enters or exits a dreaming or dozing state. 87 private static final int MSG_SANDMAN = 2; 88 // Message: Sent when the screen on blocker is released. 89 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 90 // Message: Sent to poll whether the boot animation has terminated. 91 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 92 93 // Dirty bit: mWakeLocks changed 94 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 95 // Dirty bit: mWakefulness changed 96 private static final int DIRTY_WAKEFULNESS = 1 << 1; 97 // Dirty bit: user activity was poked or may have timed out 98 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 99 // Dirty bit: actual display power state was updated asynchronously 100 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 101 // Dirty bit: mBootCompleted changed 102 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 103 // Dirty bit: settings changed 104 private static final int DIRTY_SETTINGS = 1 << 5; 105 // Dirty bit: mIsPowered changed 106 private static final int DIRTY_IS_POWERED = 1 << 6; 107 // Dirty bit: mStayOn changed 108 private static final int DIRTY_STAY_ON = 1 << 7; 109 // Dirty bit: battery state changed 110 private static final int DIRTY_BATTERY_STATE = 1 << 8; 111 // Dirty bit: proximity state changed 112 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 113 // Dirty bit: screen on blocker state became held or unheld 114 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 115 // Dirty bit: dock state changed 116 private static final int DIRTY_DOCK_STATE = 1 << 11; 117 118 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 119 // The screen should be off or in the process of being turned off by the display controller. 120 // The device typically passes through the dozing state first. 121 private static final int WAKEFULNESS_ASLEEP = 0; 122 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 123 // When the user activity timeout expires, the device may start dreaming or go to sleep. 124 private static final int WAKEFULNESS_AWAKE = 1; 125 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 126 // which ends the dream. The device goes to sleep when goToSleep() is called, when 127 // the dream ends or when unplugged. 128 // User activity may brighten the screen but does not end the dream. 129 private static final int WAKEFULNESS_DREAMING = 2; 130 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 131 // low-power "doze" dream to run which keeps the display on but lets the application 132 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 133 // The device fully goes to sleep if the dream cannot be started or ends on its own. 134 private static final int WAKEFULNESS_DOZING = 3; 135 136 // Summarizes the state of all active wakelocks. 137 private static final int WAKE_LOCK_CPU = 1 << 0; 138 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 139 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 140 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 141 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 142 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 143 private static final int WAKE_LOCK_DOZE = 1 << 6; 144 145 // Summarizes the user activity state. 146 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 147 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 148 149 // Default and minimum screen off timeout in milliseconds. 150 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 151 private static final int MINIMUM_SCREEN_OFF_TIMEOUT = 10 * 1000; 152 153 // The screen dim duration, in milliseconds. 154 // This is subtracted from the end of the screen off timeout so the 155 // minimum screen off timeout should be longer than this. 156 private static final int SCREEN_DIM_DURATION = 7 * 1000; 157 158 // The maximum screen dim time expressed as a ratio relative to the screen 159 // off timeout. If the screen off timeout is very short then we want the 160 // dim timeout to also be quite short so that most of the time is spent on. 161 // Otherwise the user won't get much screen on time before dimming occurs. 162 private static final float MAXIMUM_SCREEN_DIM_RATIO = 0.2f; 163 164 // The name of the boot animation service in init.rc. 165 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 166 167 // Poll interval in milliseconds for watching boot animation finished. 168 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 169 170 private final Context mContext; 171 private LightsManager mLightsManager; 172 private BatteryService mBatteryService; 173 private DisplayManagerInternal mDisplayManagerInternal; 174 private IBatteryStats mBatteryStats; 175 private IAppOpsService mAppOps; 176 private ServiceThread mHandlerThread; 177 private PowerManagerHandler mHandler; 178 private WindowManagerPolicy mPolicy; 179 private Notifier mNotifier; 180 private DisplayPowerController mDisplayPowerController; 181 private WirelessChargerDetector mWirelessChargerDetector; 182 private SettingsObserver mSettingsObserver; 183 private DreamManagerInternal mDreamManager; 184 private Light mAttentionLight; 185 186 private final Object mLock = new Object(); 187 188 // A bitfield that indicates what parts of the power state have 189 // changed and need to be recalculated. 190 private int mDirty; 191 192 // Indicates whether the device is awake or asleep or somewhere in between. 193 // This is distinct from the screen power state, which is managed separately. 194 private int mWakefulness; 195 196 // True if the sandman has just been summoned for the first time since entering the 197 // dreaming or dozing state. Indicates whether a new dream should begin. 198 private boolean mSandmanSummoned; 199 200 // True if MSG_SANDMAN has been scheduled. 201 private boolean mSandmanScheduled; 202 203 // Table of all suspend blockers. 204 // There should only be a few of these. 205 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 206 207 // Table of all wake locks acquired by applications. 208 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 209 210 // A bitfield that summarizes the state of all active wakelocks. 211 private int mWakeLockSummary; 212 213 // If true, instructs the display controller to wait for the proximity sensor to 214 // go negative before turning the screen on. 215 private boolean mRequestWaitForNegativeProximity; 216 217 // Timestamp of the last time the device was awoken or put to sleep. 218 private long mLastWakeTime; 219 private long mLastSleepTime; 220 221 // True if we need to send a wake up or go to sleep finished notification 222 // when the display is ready. 223 private boolean mSendWakeUpFinishedNotificationWhenReady; 224 private boolean mSendGoToSleepFinishedNotificationWhenReady; 225 226 // Timestamp of the last call to user activity. 227 private long mLastUserActivityTime; 228 private long mLastUserActivityTimeNoChangeLights; 229 230 // A bitfield that summarizes the effect of the user activity timer. 231 // A zero value indicates that the user activity timer has expired. 232 private int mUserActivitySummary; 233 234 // The desired display power state. The actual state may lag behind the 235 // requested because it is updated asynchronously by the display power controller. 236 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 237 238 // True if the display power state has been fully applied, which means the display 239 // is actually on or actually off or whatever was requested. 240 private boolean mDisplayReady; 241 242 // The suspend blocker used to keep the CPU alive when an application has acquired 243 // a wake lock. 244 private final SuspendBlocker mWakeLockSuspendBlocker; 245 246 // True if the wake lock suspend blocker has been acquired. 247 private boolean mHoldingWakeLockSuspendBlocker; 248 249 // The suspend blocker used to keep the CPU alive when the display is on, the 250 // display is getting ready or there is user activity (in which case the display 251 // must be on). 252 private final SuspendBlocker mDisplaySuspendBlocker; 253 254 // True if the display suspend blocker has been acquired. 255 private boolean mHoldingDisplaySuspendBlocker; 256 257 // The screen on blocker used to keep the screen from turning on while the lock 258 // screen is coming up. 259 private final ScreenOnBlockerImpl mScreenOnBlocker; 260 261 // The display blanker used to turn the screen on or off. 262 private final DisplayBlankerImpl mDisplayBlanker; 263 264 // True if systemReady() has been called. 265 private boolean mSystemReady; 266 267 // True if boot completed occurred. We keep the screen on until this happens. 268 private boolean mBootCompleted; 269 270 // True if auto-suspend mode is enabled. 271 // Refer to autosuspend.h. 272 private boolean mAutoSuspendModeEnabled; 273 274 // True if interactive mode is enabled. 275 // Refer to power.h. 276 private boolean mInteractiveModeEnabled; 277 278 // True if the device is plugged into a power source. 279 private boolean mIsPowered; 280 281 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 282 private int mPlugType; 283 284 // The current battery level percentage. 285 private int mBatteryLevel; 286 287 // The battery level percentage at the time the dream started. 288 // This is used to terminate a dream and go to sleep if the battery is 289 // draining faster than it is charging and the user activity timeout has expired. 290 private int mBatteryLevelWhenDreamStarted; 291 292 // The current dock state. 293 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 294 295 // True to decouple auto-suspend mode from the display state. 296 private boolean mDecoupleAutoSuspendModeFromDisplayConfig; 297 298 // True to decouple interactive mode from the display state. 299 private boolean mDecoupleInteractiveModeFromDisplayConfig; 300 301 // True if the device should wake up when plugged or unplugged. 302 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 303 304 // True if the device should suspend when the screen is off due to proximity. 305 private boolean mSuspendWhenScreenOffDueToProximityConfig; 306 307 // True if dreams are supported on this device. 308 private boolean mDreamsSupportedConfig; 309 310 // Default value for dreams enabled 311 private boolean mDreamsEnabledByDefaultConfig; 312 313 // Default value for dreams activate-on-sleep 314 private boolean mDreamsActivatedOnSleepByDefaultConfig; 315 316 // Default value for dreams activate-on-dock 317 private boolean mDreamsActivatedOnDockByDefaultConfig; 318 319 // True if dreams can run while not plugged in. 320 private boolean mDreamsEnabledOnBatteryConfig; 321 322 // Minimum battery level to allow dreaming when powered. 323 // Use -1 to disable this safety feature. 324 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 325 326 // Minimum battery level to allow dreaming when not powered. 327 // Use -1 to disable this safety feature. 328 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 329 330 // If the battery level drops by this percentage and the user activity timeout 331 // has expired, then assume the device is receiving insufficient current to charge 332 // effectively and terminate the dream. Use -1 to disable this safety feature. 333 private int mDreamsBatteryLevelDrainCutoffConfig; 334 335 // True if dreams are enabled by the user. 336 private boolean mDreamsEnabledSetting; 337 338 // True if dreams should be activated on sleep. 339 private boolean mDreamsActivateOnSleepSetting; 340 341 // True if dreams should be activated on dock. 342 private boolean mDreamsActivateOnDockSetting; 343 344 // The screen off timeout setting value in milliseconds. 345 private int mScreenOffTimeoutSetting; 346 347 // The maximum allowable screen off timeout according to the device 348 // administration policy. Overrides other settings. 349 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 350 351 // The stay on while plugged in setting. 352 // A bitfield of battery conditions under which to make the screen stay on. 353 private int mStayOnWhilePluggedInSetting; 354 355 // True if the device should stay on. 356 private boolean mStayOn; 357 358 // True if the proximity sensor reads a positive result. 359 private boolean mProximityPositive; 360 361 // Screen brightness setting limits. 362 private int mScreenBrightnessSettingMinimum; 363 private int mScreenBrightnessSettingMaximum; 364 private int mScreenBrightnessSettingDefault; 365 366 // The screen brightness setting, from 0 to 255. 367 // Use -1 if no value has been set. 368 private int mScreenBrightnessSetting; 369 370 // The screen auto-brightness adjustment setting, from -1 to 1. 371 // Use 0 if there is no adjustment. 372 private float mScreenAutoBrightnessAdjustmentSetting; 373 374 // The screen brightness mode. 375 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 376 private int mScreenBrightnessModeSetting; 377 378 // The screen brightness setting override from the window manager 379 // to allow the current foreground activity to override the brightness. 380 // Use -1 to disable. 381 private int mScreenBrightnessOverrideFromWindowManager = -1; 382 383 // The user activity timeout override from the window manager 384 // to allow the current foreground activity to override the user activity timeout. 385 // Use -1 to disable. 386 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 387 388 // The screen brightness setting override from the settings application 389 // to temporarily adjust the brightness until next updated, 390 // Use -1 to disable. 391 private int mTemporaryScreenBrightnessSettingOverride = -1; 392 393 // The screen brightness adjustment setting override from the settings 394 // application to temporarily adjust the auto-brightness adjustment factor 395 // until next updated, in the range -1..1. 396 // Use NaN to disable. 397 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 398 399 // Time when we last logged a warning about calling userActivity() without permission. 400 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 401 402 private native void nativeInit(); 403 404 private static native void nativeSetPowerState(boolean screenOn, boolean screenBright); 405 private static native void nativeAcquireSuspendBlocker(String name); 406 private static native void nativeReleaseSuspendBlocker(String name); 407 private static native void nativeSetInteractive(boolean enable); 408 private static native void nativeSetAutoSuspend(boolean enable); 409 410 public PowerManagerService(Context context) { 411 super(context); 412 mContext = context; 413 synchronized (mLock) { 414 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 415 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 416 mDisplaySuspendBlocker.acquire(); 417 mHoldingDisplaySuspendBlocker = true; 418 419 mScreenOnBlocker = new ScreenOnBlockerImpl(); 420 mDisplayBlanker = new DisplayBlankerImpl(); 421 mWakefulness = WAKEFULNESS_AWAKE; 422 } 423 424 nativeInit(); 425 nativeSetPowerState(true, true); 426 } 427 428 @Override 429 public void onStart() { 430 publishBinderService(Context.POWER_SERVICE, new BinderService()); 431 publishLocalService(PowerManagerInternal.class, new LocalService()); 432 } 433 434 /** 435 * Initialize the power manager. 436 * Must be called before any other functions within the power manager are called. 437 */ 438 public void init(LightsManager ls, 439 BatteryService bs, IBatteryStats bss, 440 IAppOpsService appOps) { 441 mLightsManager = ls; 442 mBatteryService = bs; 443 mBatteryStats = bss; 444 mAppOps = appOps; 445 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 446 mHandlerThread = new ServiceThread(TAG, 447 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 448 mHandlerThread.start(); 449 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 450 451 Watchdog.getInstance().addMonitor(this); 452 Watchdog.getInstance().addThread(mHandler); 453 454 // Forcibly turn the screen on at boot so that it is in a known power state. 455 // We do this in init() rather than in the constructor because setting the 456 // screen state requires a call into surface flinger which then needs to call back 457 // into the activity manager to check permissions. Unfortunately the 458 // activity manager is not running when the constructor is called, so we 459 // have to defer setting the screen state until this point. 460 mDisplayBlanker.unblankAllDisplays(); 461 } 462 463 void setPolicy(WindowManagerPolicy policy) { 464 synchronized (mLock) { 465 mPolicy = policy; 466 } 467 } 468 469 public void systemReady() { 470 synchronized (mLock) { 471 mSystemReady = true; 472 mDreamManager = LocalServices.getService(DreamManagerInternal.class); 473 474 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 475 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 476 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 477 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 478 479 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 480 481 // The notifier runs on the system server's main looper so as not to interfere 482 // with the animations and other critical functions of the power manager. 483 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 484 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 485 mScreenOnBlocker, mPolicy); 486 487 // The display power controller runs on the power manager service's 488 // own handler thread to ensure timely operation. 489 mDisplayPowerController = new DisplayPowerController(mHandler.getLooper(), 490 mContext, mNotifier, mLightsManager, 491 LocalServices.getService(TwilightManager.class), sensorManager, 492 mDisplaySuspendBlocker, mDisplayBlanker, 493 mDisplayPowerControllerCallbacks, mHandler); 494 495 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 496 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 497 mHandler); 498 mSettingsObserver = new SettingsObserver(mHandler); 499 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 500 501 // Register for broadcasts from other components of the system. 502 IntentFilter filter = new IntentFilter(); 503 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 504 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 505 506 filter = new IntentFilter(); 507 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 508 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 509 510 filter = new IntentFilter(); 511 filter.addAction(Intent.ACTION_DREAMING_STARTED); 512 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 513 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 514 515 filter = new IntentFilter(); 516 filter.addAction(Intent.ACTION_USER_SWITCHED); 517 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 518 519 filter = new IntentFilter(); 520 filter.addAction(Intent.ACTION_DOCK_EVENT); 521 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 522 523 // Register for settings changes. 524 final ContentResolver resolver = mContext.getContentResolver(); 525 resolver.registerContentObserver(Settings.Secure.getUriFor( 526 Settings.Secure.SCREENSAVER_ENABLED), 527 false, mSettingsObserver, UserHandle.USER_ALL); 528 resolver.registerContentObserver(Settings.Secure.getUriFor( 529 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 530 false, mSettingsObserver, UserHandle.USER_ALL); 531 resolver.registerContentObserver(Settings.Secure.getUriFor( 532 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 533 false, mSettingsObserver, UserHandle.USER_ALL); 534 resolver.registerContentObserver(Settings.System.getUriFor( 535 Settings.System.SCREEN_OFF_TIMEOUT), 536 false, mSettingsObserver, UserHandle.USER_ALL); 537 resolver.registerContentObserver(Settings.Global.getUriFor( 538 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 539 false, mSettingsObserver, UserHandle.USER_ALL); 540 resolver.registerContentObserver(Settings.System.getUriFor( 541 Settings.System.SCREEN_BRIGHTNESS), 542 false, mSettingsObserver, UserHandle.USER_ALL); 543 resolver.registerContentObserver(Settings.System.getUriFor( 544 Settings.System.SCREEN_BRIGHTNESS_MODE), 545 false, mSettingsObserver, UserHandle.USER_ALL); 546 547 // Go. 548 readConfigurationLocked(); 549 updateSettingsLocked(); 550 mDirty |= DIRTY_BATTERY_STATE; 551 updatePowerStateLocked(); 552 } 553 } 554 555 private void readConfigurationLocked() { 556 final Resources resources = mContext.getResources(); 557 558 mDecoupleAutoSuspendModeFromDisplayConfig = resources.getBoolean( 559 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 560 mDecoupleInteractiveModeFromDisplayConfig = resources.getBoolean( 561 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 562 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 563 com.android.internal.R.bool.config_unplugTurnsOnScreen); 564 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 565 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 566 mDreamsSupportedConfig = resources.getBoolean( 567 com.android.internal.R.bool.config_dreamsSupported); 568 mDreamsEnabledByDefaultConfig = resources.getBoolean( 569 com.android.internal.R.bool.config_dreamsEnabledByDefault); 570 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 571 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 572 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 573 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 574 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 575 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 576 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 577 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 578 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 579 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 580 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 581 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 582 } 583 584 private void updateSettingsLocked() { 585 final ContentResolver resolver = mContext.getContentResolver(); 586 587 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 588 Settings.Secure.SCREENSAVER_ENABLED, 589 mDreamsEnabledByDefaultConfig ? 1 : 0, 590 UserHandle.USER_CURRENT) != 0); 591 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 592 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 593 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 594 UserHandle.USER_CURRENT) != 0); 595 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 596 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 597 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 598 UserHandle.USER_CURRENT) != 0); 599 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 600 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 601 UserHandle.USER_CURRENT); 602 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 603 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 604 605 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 606 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 607 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 608 UserHandle.USER_CURRENT); 609 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 610 mTemporaryScreenBrightnessSettingOverride = -1; 611 } 612 613 final float oldScreenAutoBrightnessAdjustmentSetting = 614 mScreenAutoBrightnessAdjustmentSetting; 615 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 616 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 617 UserHandle.USER_CURRENT); 618 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 619 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 620 } 621 622 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 623 Settings.System.SCREEN_BRIGHTNESS_MODE, 624 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 625 626 mDirty |= DIRTY_SETTINGS; 627 } 628 629 private void handleSettingsChangedLocked() { 630 updateSettingsLocked(); 631 updatePowerStateLocked(); 632 } 633 634 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 635 WorkSource ws, String historyTag, int uid, int pid) { 636 synchronized (mLock) { 637 if (DEBUG_SPEW) { 638 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 639 + ", flags=0x" + Integer.toHexString(flags) 640 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 641 } 642 643 WakeLock wakeLock; 644 int index = findWakeLockIndexLocked(lock); 645 if (index >= 0) { 646 wakeLock = mWakeLocks.get(index); 647 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 648 // Update existing wake lock. This shouldn't happen but is harmless. 649 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 650 uid, pid, ws, historyTag); 651 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 652 } 653 } else { 654 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 655 try { 656 lock.linkToDeath(wakeLock, 0); 657 } catch (RemoteException ex) { 658 throw new IllegalArgumentException("Wake lock is already dead."); 659 } 660 notifyWakeLockAcquiredLocked(wakeLock); 661 mWakeLocks.add(wakeLock); 662 } 663 664 applyWakeLockFlagsOnAcquireLocked(wakeLock); 665 mDirty |= DIRTY_WAKE_LOCKS; 666 updatePowerStateLocked(); 667 } 668 } 669 670 @SuppressWarnings("deprecation") 671 private static boolean isScreenLock(final WakeLock wakeLock) { 672 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 673 case PowerManager.FULL_WAKE_LOCK: 674 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 675 case PowerManager.SCREEN_DIM_WAKE_LOCK: 676 return true; 677 } 678 return false; 679 } 680 681 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 682 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 683 && isScreenLock(wakeLock)) { 684 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 685 } 686 } 687 688 private void releaseWakeLockInternal(IBinder lock, int flags) { 689 synchronized (mLock) { 690 int index = findWakeLockIndexLocked(lock); 691 if (index < 0) { 692 if (DEBUG_SPEW) { 693 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 694 + " [not found], flags=0x" + Integer.toHexString(flags)); 695 } 696 return; 697 } 698 699 WakeLock wakeLock = mWakeLocks.get(index); 700 if (DEBUG_SPEW) { 701 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 702 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 703 } 704 705 mWakeLocks.remove(index); 706 notifyWakeLockReleasedLocked(wakeLock); 707 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 708 709 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 710 mRequestWaitForNegativeProximity = true; 711 } 712 713 applyWakeLockFlagsOnReleaseLocked(wakeLock); 714 mDirty |= DIRTY_WAKE_LOCKS; 715 updatePowerStateLocked(); 716 } 717 } 718 719 private void handleWakeLockDeath(WakeLock wakeLock) { 720 synchronized (mLock) { 721 if (DEBUG_SPEW) { 722 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 723 + " [" + wakeLock.mTag + "]"); 724 } 725 726 int index = mWakeLocks.indexOf(wakeLock); 727 if (index < 0) { 728 return; 729 } 730 731 mWakeLocks.remove(index); 732 notifyWakeLockReleasedLocked(wakeLock); 733 734 applyWakeLockFlagsOnReleaseLocked(wakeLock); 735 mDirty |= DIRTY_WAKE_LOCKS; 736 updatePowerStateLocked(); 737 } 738 } 739 740 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 741 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 742 && isScreenLock(wakeLock)) { 743 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 744 PowerManager.USER_ACTIVITY_EVENT_OTHER, 745 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 746 wakeLock.mOwnerUid); 747 } 748 } 749 750 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws) { 751 synchronized (mLock) { 752 int index = findWakeLockIndexLocked(lock); 753 if (index < 0) { 754 if (DEBUG_SPEW) { 755 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 756 + " [not found], ws=" + ws); 757 } 758 throw new IllegalArgumentException("Wake lock not active"); 759 } 760 761 WakeLock wakeLock = mWakeLocks.get(index); 762 if (DEBUG_SPEW) { 763 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 764 + " [" + wakeLock.mTag + "], ws=" + ws); 765 } 766 767 if (!wakeLock.hasSameWorkSource(ws)) { 768 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 769 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 770 ws, wakeLock.mHistoryTag); 771 wakeLock.updateWorkSource(ws); 772 } 773 } 774 } 775 776 private int findWakeLockIndexLocked(IBinder lock) { 777 final int count = mWakeLocks.size(); 778 for (int i = 0; i < count; i++) { 779 if (mWakeLocks.get(i).mLock == lock) { 780 return i; 781 } 782 } 783 return -1; 784 } 785 786 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 787 if (mSystemReady) { 788 wakeLock.mNotifiedAcquired = true; 789 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 790 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 791 wakeLock.mHistoryTag); 792 } 793 } 794 795 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 796 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 797 if (mSystemReady && wakeLock.mNotifiedAcquired) { 798 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 799 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 800 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 801 } 802 } 803 804 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 805 if (mSystemReady && wakeLock.mNotifiedAcquired) { 806 wakeLock.mNotifiedAcquired = false; 807 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 808 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 809 } 810 } 811 812 @SuppressWarnings("deprecation") 813 private boolean isWakeLockLevelSupportedInternal(int level) { 814 synchronized (mLock) { 815 switch (level) { 816 case PowerManager.PARTIAL_WAKE_LOCK: 817 case PowerManager.SCREEN_DIM_WAKE_LOCK: 818 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 819 case PowerManager.FULL_WAKE_LOCK: 820 case PowerManager.DOZE_WAKE_LOCK: 821 return true; 822 823 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 824 return mSystemReady && mDisplayPowerController.isProximitySensorAvailable(); 825 826 default: 827 return false; 828 } 829 } 830 } 831 832 // Called from native code. 833 private void userActivityFromNative(long eventTime, int event, int flags) { 834 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 835 } 836 837 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 838 synchronized (mLock) { 839 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 840 updatePowerStateLocked(); 841 } 842 } 843 } 844 845 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 846 if (DEBUG_SPEW) { 847 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 848 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 849 + ", uid=" + uid); 850 } 851 852 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 853 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 854 || !mBootCompleted || !mSystemReady) { 855 return false; 856 } 857 858 mNotifier.onUserActivity(event, uid); 859 860 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 861 if (eventTime > mLastUserActivityTimeNoChangeLights 862 && eventTime > mLastUserActivityTime) { 863 mLastUserActivityTimeNoChangeLights = eventTime; 864 mDirty |= DIRTY_USER_ACTIVITY; 865 return true; 866 } 867 } else { 868 if (eventTime > mLastUserActivityTime) { 869 mLastUserActivityTime = eventTime; 870 mDirty |= DIRTY_USER_ACTIVITY; 871 return true; 872 } 873 } 874 return false; 875 } 876 877 // Called from native code. 878 private void wakeUpFromNative(long eventTime) { 879 wakeUpInternal(eventTime); 880 } 881 882 private void wakeUpInternal(long eventTime) { 883 synchronized (mLock) { 884 if (wakeUpNoUpdateLocked(eventTime)) { 885 updatePowerStateLocked(); 886 } 887 } 888 } 889 890 private boolean wakeUpNoUpdateLocked(long eventTime) { 891 if (DEBUG_SPEW) { 892 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 893 } 894 895 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 896 || !mBootCompleted || !mSystemReady) { 897 return false; 898 } 899 900 switch (mWakefulness) { 901 case WAKEFULNESS_ASLEEP: 902 Slog.i(TAG, "Waking up from sleep..."); 903 break; 904 case WAKEFULNESS_DREAMING: 905 Slog.i(TAG, "Waking up from dream..."); 906 break; 907 case WAKEFULNESS_DOZING: 908 Slog.i(TAG, "Waking up from dozing..."); 909 break; 910 } 911 912 if (mWakefulness != WAKEFULNESS_DREAMING) { 913 sendPendingNotificationsLocked(); 914 mNotifier.onWakeUpStarted(); 915 mSendWakeUpFinishedNotificationWhenReady = true; 916 } 917 918 mLastWakeTime = eventTime; 919 mWakefulness = WAKEFULNESS_AWAKE; 920 mDirty |= DIRTY_WAKEFULNESS; 921 922 userActivityNoUpdateLocked( 923 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 924 return true; 925 } 926 927 // Called from native code. 928 private void goToSleepFromNative(long eventTime, int reason) { 929 goToSleepInternal(eventTime, reason); 930 } 931 932 private void goToSleepInternal(long eventTime, int reason) { 933 synchronized (mLock) { 934 if (goToSleepNoUpdateLocked(eventTime, reason)) { 935 updatePowerStateLocked(); 936 } 937 } 938 } 939 940 // This method is called goToSleep for historical reasons but we actually start 941 // dozing before really going to sleep. 942 @SuppressWarnings("deprecation") 943 private boolean goToSleepNoUpdateLocked(long eventTime, int reason) { 944 if (DEBUG_SPEW) { 945 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime + ", reason=" + reason); 946 } 947 948 if (eventTime < mLastWakeTime 949 || mWakefulness == WAKEFULNESS_ASLEEP 950 || mWakefulness == WAKEFULNESS_DOZING 951 || !mBootCompleted || !mSystemReady) { 952 return false; 953 } 954 955 switch (reason) { 956 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 957 Slog.i(TAG, "Going to sleep due to device administration policy..."); 958 break; 959 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 960 Slog.i(TAG, "Going to sleep due to screen timeout..."); 961 break; 962 default: 963 Slog.i(TAG, "Going to sleep by user request..."); 964 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 965 break; 966 } 967 968 sendPendingNotificationsLocked(); 969 mNotifier.onGoToSleepStarted(reason); 970 mSendGoToSleepFinishedNotificationWhenReady = true; 971 972 mLastSleepTime = eventTime; 973 mDirty |= DIRTY_WAKEFULNESS; 974 mWakefulness = WAKEFULNESS_DOZING; 975 mSandmanSummoned = true; 976 977 // Report the number of wake locks that will be cleared by going to sleep. 978 int numWakeLocksCleared = 0; 979 final int numWakeLocks = mWakeLocks.size(); 980 for (int i = 0; i < numWakeLocks; i++) { 981 final WakeLock wakeLock = mWakeLocks.get(i); 982 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 983 case PowerManager.FULL_WAKE_LOCK: 984 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 985 case PowerManager.SCREEN_DIM_WAKE_LOCK: 986 numWakeLocksCleared += 1; 987 break; 988 } 989 } 990 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 991 return true; 992 } 993 994 private void napInternal(long eventTime) { 995 synchronized (mLock) { 996 if (napNoUpdateLocked(eventTime)) { 997 updatePowerStateLocked(); 998 } 999 } 1000 } 1001 1002 private boolean napNoUpdateLocked(long eventTime) { 1003 if (DEBUG_SPEW) { 1004 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 1005 } 1006 1007 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1008 || !mBootCompleted || !mSystemReady) { 1009 return false; 1010 } 1011 1012 Slog.i(TAG, "Nap time..."); 1013 1014 mDirty |= DIRTY_WAKEFULNESS; 1015 mWakefulness = WAKEFULNESS_DREAMING; 1016 mSandmanSummoned = true; 1017 return true; 1018 } 1019 1020 // Done dozing, drop everything and go to sleep. 1021 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 1022 if (DEBUG_SPEW) { 1023 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 1024 } 1025 1026 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1027 || !mBootCompleted || !mSystemReady) { 1028 return false; 1029 } 1030 1031 Slog.i(TAG, "Sleeping..."); 1032 1033 mDirty |= DIRTY_WAKEFULNESS; 1034 mWakefulness = WAKEFULNESS_ASLEEP; 1035 return true; 1036 } 1037 1038 /** 1039 * Updates the global power state based on dirty bits recorded in mDirty. 1040 * 1041 * This is the main function that performs power state transitions. 1042 * We centralize them here so that we can recompute the power state completely 1043 * each time something important changes, and ensure that we do it the same 1044 * way each time. The point is to gather all of the transition logic here. 1045 */ 1046 private void updatePowerStateLocked() { 1047 if (!mSystemReady || mDirty == 0) { 1048 return; 1049 } 1050 1051 // Phase 0: Basic state updates. 1052 updateIsPoweredLocked(mDirty); 1053 updateStayOnLocked(mDirty); 1054 1055 // Phase 1: Update wakefulness. 1056 // Loop because the wake lock and user activity computations are influenced 1057 // by changes in wakefulness. 1058 final long now = SystemClock.uptimeMillis(); 1059 int dirtyPhase2 = 0; 1060 for (;;) { 1061 int dirtyPhase1 = mDirty; 1062 dirtyPhase2 |= dirtyPhase1; 1063 mDirty = 0; 1064 1065 updateWakeLockSummaryLocked(dirtyPhase1); 1066 updateUserActivitySummaryLocked(now, dirtyPhase1); 1067 if (!updateWakefulnessLocked(dirtyPhase1)) { 1068 break; 1069 } 1070 } 1071 1072 // Phase 2: Update dreams and display power state. 1073 updateDreamLocked(dirtyPhase2); 1074 updateDisplayPowerStateLocked(dirtyPhase2); 1075 1076 // Phase 3: Send notifications, if needed. 1077 if (mDisplayReady) { 1078 sendPendingNotificationsLocked(); 1079 } 1080 1081 // Phase 4: Update suspend blocker. 1082 // Because we might release the last suspend blocker here, we need to make sure 1083 // we finished everything else first! 1084 updateSuspendBlockerLocked(); 1085 } 1086 1087 private void sendPendingNotificationsLocked() { 1088 if (mSendWakeUpFinishedNotificationWhenReady) { 1089 mSendWakeUpFinishedNotificationWhenReady = false; 1090 mNotifier.onWakeUpFinished(); 1091 } 1092 if (mSendGoToSleepFinishedNotificationWhenReady) { 1093 mSendGoToSleepFinishedNotificationWhenReady = false; 1094 mNotifier.onGoToSleepFinished(); 1095 } 1096 } 1097 1098 /** 1099 * Updates the value of mIsPowered. 1100 * Sets DIRTY_IS_POWERED if a change occurred. 1101 */ 1102 private void updateIsPoweredLocked(int dirty) { 1103 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1104 final boolean wasPowered = mIsPowered; 1105 final int oldPlugType = mPlugType; 1106 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1107 mPlugType = mBatteryService.getPlugType(); 1108 mBatteryLevel = mBatteryService.getBatteryLevel(); 1109 1110 if (DEBUG_SPEW) { 1111 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1112 + ", mIsPowered=" + mIsPowered 1113 + ", oldPlugType=" + oldPlugType 1114 + ", mPlugType=" + mPlugType 1115 + ", mBatteryLevel=" + mBatteryLevel); 1116 } 1117 1118 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1119 mDirty |= DIRTY_IS_POWERED; 1120 1121 // Update wireless dock detection state. 1122 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1123 mIsPowered, mPlugType, mBatteryLevel); 1124 1125 // Treat plugging and unplugging the devices as a user activity. 1126 // Users find it disconcerting when they plug or unplug the device 1127 // and it shuts off right away. 1128 // Some devices also wake the device when plugged or unplugged because 1129 // they don't have a charging LED. 1130 final long now = SystemClock.uptimeMillis(); 1131 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1132 dockedOnWirelessCharger)) { 1133 wakeUpNoUpdateLocked(now); 1134 } 1135 userActivityNoUpdateLocked( 1136 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1137 1138 // Tell the notifier whether wireless charging has started so that 1139 // it can provide feedback to the user. 1140 if (dockedOnWirelessCharger) { 1141 mNotifier.onWirelessChargingStarted(); 1142 } 1143 } 1144 } 1145 } 1146 1147 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1148 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1149 // Don't wake when powered unless configured to do so. 1150 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1151 return false; 1152 } 1153 1154 // Don't wake when undocked from wireless charger. 1155 // See WirelessChargerDetector for justification. 1156 if (wasPowered && !mIsPowered 1157 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1158 return false; 1159 } 1160 1161 // Don't wake when docked on wireless charger unless we are certain of it. 1162 // See WirelessChargerDetector for justification. 1163 if (!wasPowered && mIsPowered 1164 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1165 && !dockedOnWirelessCharger) { 1166 return false; 1167 } 1168 1169 // If already dreaming and becoming powered, then don't wake. 1170 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1171 return false; 1172 } 1173 1174 // Otherwise wake up! 1175 return true; 1176 } 1177 1178 /** 1179 * Updates the value of mStayOn. 1180 * Sets DIRTY_STAY_ON if a change occurred. 1181 */ 1182 private void updateStayOnLocked(int dirty) { 1183 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1184 final boolean wasStayOn = mStayOn; 1185 if (mStayOnWhilePluggedInSetting != 0 1186 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1187 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1188 } else { 1189 mStayOn = false; 1190 } 1191 1192 if (mStayOn != wasStayOn) { 1193 mDirty |= DIRTY_STAY_ON; 1194 } 1195 } 1196 } 1197 1198 /** 1199 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1200 * Note that most wake-locks are ignored when the system is asleep. 1201 * 1202 * This function must have no other side-effects. 1203 */ 1204 @SuppressWarnings("deprecation") 1205 private void updateWakeLockSummaryLocked(int dirty) { 1206 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1207 mWakeLockSummary = 0; 1208 1209 final int numWakeLocks = mWakeLocks.size(); 1210 for (int i = 0; i < numWakeLocks; i++) { 1211 final WakeLock wakeLock = mWakeLocks.get(i); 1212 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1213 case PowerManager.PARTIAL_WAKE_LOCK: 1214 mWakeLockSummary |= WAKE_LOCK_CPU; 1215 break; 1216 case PowerManager.FULL_WAKE_LOCK: 1217 if (mWakefulness == WAKEFULNESS_AWAKE 1218 || mWakefulness == WAKEFULNESS_DREAMING) { 1219 mWakeLockSummary |= WAKE_LOCK_CPU 1220 | WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1221 } 1222 if (mWakefulness == WAKEFULNESS_AWAKE) { 1223 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1224 } 1225 break; 1226 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1227 if (mWakefulness == WAKEFULNESS_AWAKE 1228 || mWakefulness == WAKEFULNESS_DREAMING) { 1229 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_SCREEN_BRIGHT; 1230 } 1231 if (mWakefulness == WAKEFULNESS_AWAKE) { 1232 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1233 } 1234 break; 1235 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1236 if (mWakefulness == WAKEFULNESS_AWAKE 1237 || mWakefulness == WAKEFULNESS_DREAMING) { 1238 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_SCREEN_DIM; 1239 } 1240 if (mWakefulness == WAKEFULNESS_AWAKE) { 1241 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1242 } 1243 break; 1244 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1245 if (mWakefulness == WAKEFULNESS_AWAKE 1246 || mWakefulness == WAKEFULNESS_DREAMING 1247 || mWakefulness == WAKEFULNESS_DOZING) { 1248 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1249 } 1250 break; 1251 case PowerManager.DOZE_WAKE_LOCK: 1252 if (mWakefulness == WAKEFULNESS_DOZING) { 1253 mWakeLockSummary |= WAKE_LOCK_DOZE; 1254 } 1255 break; 1256 } 1257 } 1258 1259 if (DEBUG_SPEW) { 1260 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1261 + wakefulnessToString(mWakefulness) 1262 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1263 } 1264 } 1265 } 1266 1267 /** 1268 * Updates the value of mUserActivitySummary to summarize the user requested 1269 * state of the system such as whether the screen should be bright or dim. 1270 * Note that user activity is ignored when the system is asleep. 1271 * 1272 * This function must have no other side-effects. 1273 */ 1274 private void updateUserActivitySummaryLocked(long now, int dirty) { 1275 // Update the status of the user activity timeout timer. 1276 if ((dirty & (DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1277 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1278 1279 long nextTimeout = 0; 1280 if (mWakefulness == WAKEFULNESS_AWAKE 1281 || mWakefulness == WAKEFULNESS_DREAMING) { 1282 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1283 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1284 1285 mUserActivitySummary = 0; 1286 if (mLastUserActivityTime >= mLastWakeTime) { 1287 nextTimeout = mLastUserActivityTime 1288 + screenOffTimeout - screenDimDuration; 1289 if (now < nextTimeout) { 1290 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1291 } else { 1292 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1293 if (now < nextTimeout) { 1294 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1295 } 1296 } 1297 } 1298 if (mUserActivitySummary == 0 1299 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1300 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1301 if (now < nextTimeout 1302 && mDisplayPowerRequest.wantScreenOnNormal()) { 1303 mUserActivitySummary = mDisplayPowerRequest.screenState 1304 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1305 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1306 } 1307 } 1308 if (mUserActivitySummary != 0) { 1309 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1310 msg.setAsynchronous(true); 1311 mHandler.sendMessageAtTime(msg, nextTimeout); 1312 } 1313 } else { 1314 mUserActivitySummary = 0; 1315 } 1316 1317 if (DEBUG_SPEW) { 1318 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1319 + wakefulnessToString(mWakefulness) 1320 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1321 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1322 } 1323 } 1324 } 1325 1326 /** 1327 * Called when a user activity timeout has occurred. 1328 * Simply indicates that something about user activity has changed so that the new 1329 * state can be recomputed when the power state is updated. 1330 * 1331 * This function must have no other side-effects besides setting the dirty 1332 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1333 */ 1334 private void handleUserActivityTimeout() { // runs on handler thread 1335 synchronized (mLock) { 1336 if (DEBUG_SPEW) { 1337 Slog.d(TAG, "handleUserActivityTimeout"); 1338 } 1339 1340 mDirty |= DIRTY_USER_ACTIVITY; 1341 updatePowerStateLocked(); 1342 } 1343 } 1344 1345 private int getScreenOffTimeoutLocked() { 1346 int timeout = mScreenOffTimeoutSetting; 1347 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1348 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1349 } 1350 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1351 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1352 } 1353 return Math.max(timeout, MINIMUM_SCREEN_OFF_TIMEOUT); 1354 } 1355 1356 private int getScreenDimDurationLocked(int screenOffTimeout) { 1357 return Math.min(SCREEN_DIM_DURATION, 1358 (int)(screenOffTimeout * MAXIMUM_SCREEN_DIM_RATIO)); 1359 } 1360 1361 /** 1362 * Updates the wakefulness of the device. 1363 * 1364 * This is the function that decides whether the device should start dreaming 1365 * based on the current wake locks and user activity state. It may modify mDirty 1366 * if the wakefulness changes. 1367 * 1368 * Returns true if the wakefulness changed and we need to restart power state calculation. 1369 */ 1370 private boolean updateWakefulnessLocked(int dirty) { 1371 boolean changed = false; 1372 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1373 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1374 | DIRTY_DOCK_STATE)) != 0) { 1375 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1376 if (DEBUG_SPEW) { 1377 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1378 } 1379 final long time = SystemClock.uptimeMillis(); 1380 if (shouldNapAtBedTimeLocked()) { 1381 changed = napNoUpdateLocked(time); 1382 } else { 1383 changed = goToSleepNoUpdateLocked(time, 1384 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1385 } 1386 } 1387 } 1388 return changed; 1389 } 1390 1391 /** 1392 * Returns true if the device should automatically nap and start dreaming when the user 1393 * activity timeout has expired and it's bedtime. 1394 */ 1395 private boolean shouldNapAtBedTimeLocked() { 1396 return mDreamsActivateOnSleepSetting 1397 || (mDreamsActivateOnDockSetting 1398 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1399 } 1400 1401 /** 1402 * Returns true if the device should go to sleep now. 1403 * Also used when exiting a dream to determine whether we should go back 1404 * to being fully awake or else go to sleep for good. 1405 */ 1406 private boolean isItBedTimeYetLocked() { 1407 return mBootCompleted && !isBeingKeptAwakeLocked(); 1408 } 1409 1410 /** 1411 * Returns true if the device is being kept awake by a wake lock, user activity 1412 * or the stay on while powered setting. We also keep the phone awake when 1413 * the proximity sensor returns a positive result so that the device does not 1414 * lock while in a phone call. This function only controls whether the device 1415 * will go to sleep or dream which is independent of whether it will be allowed 1416 * to suspend. 1417 */ 1418 private boolean isBeingKeptAwakeLocked() { 1419 return mStayOn 1420 || mProximityPositive 1421 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1422 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1423 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1424 } 1425 1426 /** 1427 * Determines whether to post a message to the sandman to update the dream state. 1428 */ 1429 private void updateDreamLocked(int dirty) { 1430 if ((dirty & (DIRTY_WAKEFULNESS 1431 | DIRTY_USER_ACTIVITY 1432 | DIRTY_WAKE_LOCKS 1433 | DIRTY_BOOT_COMPLETED 1434 | DIRTY_SETTINGS 1435 | DIRTY_IS_POWERED 1436 | DIRTY_STAY_ON 1437 | DIRTY_PROXIMITY_POSITIVE 1438 | DIRTY_BATTERY_STATE)) != 0) { 1439 scheduleSandmanLocked(); 1440 } 1441 } 1442 1443 private void scheduleSandmanLocked() { 1444 if (!mSandmanScheduled) { 1445 mSandmanScheduled = true; 1446 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1447 msg.setAsynchronous(true); 1448 mHandler.sendMessage(msg); 1449 } 1450 } 1451 1452 /** 1453 * Called when the device enters or exits a dreaming or dozing state. 1454 * 1455 * We do this asynchronously because we must call out of the power manager to start 1456 * the dream and we don't want to hold our lock while doing so. There is a risk that 1457 * the device will wake or go to sleep in the meantime so we have to handle that case. 1458 */ 1459 private void handleSandman() { // runs on handler thread 1460 // Handle preconditions. 1461 final boolean startDreaming; 1462 final int wakefulness; 1463 synchronized (mLock) { 1464 mSandmanScheduled = false; 1465 wakefulness = mWakefulness; 1466 if (mSandmanSummoned) { 1467 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1468 || wakefulness == WAKEFULNESS_DOZING); 1469 mSandmanSummoned = false; 1470 } else { 1471 startDreaming = false; 1472 } 1473 } 1474 1475 // Start dreaming if needed. 1476 // We only control the dream on the handler thread, so we don't need to worry about 1477 // concurrent attempts to start or stop the dream. 1478 final boolean isDreaming; 1479 if (mDreamManager != null) { 1480 // Restart the dream whenever the sandman is summoned. 1481 if (startDreaming) { 1482 mDreamManager.stopDream(); 1483 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1484 } 1485 isDreaming = mDreamManager.isDreaming(); 1486 } else { 1487 isDreaming = false; 1488 } 1489 1490 // Update dream state. 1491 synchronized (mLock) { 1492 // Remember the initial battery level when the dream started. 1493 if (startDreaming && isDreaming) { 1494 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1495 if (wakefulness == WAKEFULNESS_DOZING) { 1496 Slog.i(TAG, "Dozing..."); 1497 } else { 1498 Slog.i(TAG, "Dreaming..."); 1499 } 1500 } 1501 1502 // If preconditions changed, wait for the next iteration to determine 1503 // whether the dream should continue (or be restarted). 1504 if (mSandmanSummoned || mWakefulness != wakefulness) { 1505 return; // wait for next cycle 1506 } 1507 1508 // Determine whether the dream should continue. 1509 if (wakefulness == WAKEFULNESS_DREAMING) { 1510 if (isDreaming && canDreamLocked()) { 1511 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1512 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1513 - mDreamsBatteryLevelDrainCutoffConfig 1514 && !isBeingKeptAwakeLocked()) { 1515 // If the user activity timeout expired and the battery appears 1516 // to be draining faster than it is charging then stop dreaming 1517 // and go to sleep. 1518 Slog.i(TAG, "Stopping dream because the battery appears to " 1519 + "be draining faster than it is charging. " 1520 + "Battery level when dream started: " 1521 + mBatteryLevelWhenDreamStarted + "%. " 1522 + "Battery level now: " + mBatteryLevel + "%."); 1523 } else { 1524 return; // continue dreaming 1525 } 1526 } 1527 1528 // Dream has ended or will be stopped. Update the power state. 1529 if (isItBedTimeYetLocked()) { 1530 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1531 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1532 updatePowerStateLocked(); 1533 } else { 1534 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1535 updatePowerStateLocked(); 1536 } 1537 } else if (wakefulness == WAKEFULNESS_DOZING) { 1538 if (isDreaming) { 1539 return; // continue dozing 1540 } 1541 1542 // Doze has ended or will be stopped. Update the power state. 1543 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1544 updatePowerStateLocked(); 1545 } 1546 } 1547 1548 // Stop dream. 1549 if (isDreaming) { 1550 mDreamManager.stopDream(); 1551 } 1552 } 1553 1554 /** 1555 * Returns true if the device is allowed to dream in its current state. 1556 * This function is not called when dozing. 1557 */ 1558 private boolean canDreamLocked() { 1559 if (mWakefulness != WAKEFULNESS_DREAMING 1560 || !mDreamsSupportedConfig 1561 || !mDreamsEnabledSetting 1562 || !mDisplayPowerRequest.wantScreenOnNormal() 1563 || !mBootCompleted) { 1564 return false; 1565 } 1566 if (!isBeingKeptAwakeLocked()) { 1567 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1568 return false; 1569 } 1570 if (!mIsPowered 1571 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1572 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1573 return false; 1574 } 1575 if (mIsPowered 1576 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1577 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1578 return false; 1579 } 1580 } 1581 return true; 1582 } 1583 1584 private void handleScreenOnBlockerReleased() { 1585 synchronized (mLock) { 1586 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1587 updatePowerStateLocked(); 1588 } 1589 } 1590 1591 /** 1592 * Updates the display power state asynchronously. 1593 * When the update is finished, mDisplayReady will be set to true. The display 1594 * controller posts a message to tell us when the actual display power state 1595 * has been updated so we come back here to double-check and finish up. 1596 * 1597 * This function recalculates the display power state each time. 1598 */ 1599 private void updateDisplayPowerStateLocked(int dirty) { 1600 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1601 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1602 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1603 final int newScreenState = getDesiredScreenPowerStateLocked(); 1604 mDisplayPowerRequest.screenState = newScreenState; 1605 nativeSetPowerState(isScreenOnLocked(), 1606 newScreenState == DisplayPowerRequest.SCREEN_STATE_BRIGHT); 1607 1608 int screenBrightness = mScreenBrightnessSettingDefault; 1609 float screenAutoBrightnessAdjustment = 0.0f; 1610 boolean autoBrightness = (mScreenBrightnessModeSetting == 1611 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1612 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1613 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1614 autoBrightness = false; 1615 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1616 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1617 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1618 screenBrightness = mScreenBrightnessSetting; 1619 } 1620 if (autoBrightness) { 1621 screenBrightness = mScreenBrightnessSettingDefault; 1622 if (isValidAutoBrightnessAdjustment( 1623 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1624 screenAutoBrightnessAdjustment = 1625 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1626 } else if (isValidAutoBrightnessAdjustment( 1627 mScreenAutoBrightnessAdjustmentSetting)) { 1628 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1629 } 1630 } 1631 screenBrightness = Math.max(Math.min(screenBrightness, 1632 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1633 screenAutoBrightnessAdjustment = Math.max(Math.min( 1634 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1635 mDisplayPowerRequest.screenBrightness = screenBrightness; 1636 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1637 screenAutoBrightnessAdjustment; 1638 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1639 1640 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1641 1642 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1643 1644 mDisplayReady = mDisplayPowerController.requestPowerState(mDisplayPowerRequest, 1645 mRequestWaitForNegativeProximity); 1646 mRequestWaitForNegativeProximity = false; 1647 1648 if (DEBUG_SPEW) { 1649 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1650 + ", newScreenState=" + newScreenState 1651 + ", mWakefulness=" + mWakefulness 1652 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1653 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1654 + ", mBootCompleted=" + mBootCompleted); 1655 } 1656 } 1657 } 1658 1659 private static boolean isValidBrightness(int value) { 1660 return value >= 0 && value <= 255; 1661 } 1662 1663 private static boolean isValidAutoBrightnessAdjustment(float value) { 1664 // Handles NaN by always returning false. 1665 return value >= -1.0f && value <= 1.0f; 1666 } 1667 1668 private int getDesiredScreenPowerStateLocked() { 1669 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1670 return DisplayPowerRequest.SCREEN_STATE_OFF; 1671 } 1672 1673 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1674 return DisplayPowerRequest.SCREEN_STATE_DOZE; 1675 } 1676 1677 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1678 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1679 || !mBootCompleted) { 1680 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1681 } 1682 1683 return DisplayPowerRequest.SCREEN_STATE_DIM; 1684 } 1685 1686 private final DisplayPowerController.Callbacks mDisplayPowerControllerCallbacks = 1687 new DisplayPowerController.Callbacks() { 1688 @Override 1689 public void onStateChanged() { 1690 synchronized (mLock) { 1691 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1692 updatePowerStateLocked(); 1693 } 1694 } 1695 1696 @Override 1697 public void onProximityPositive() { 1698 synchronized (mLock) { 1699 mProximityPositive = true; 1700 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1701 updatePowerStateLocked(); 1702 } 1703 } 1704 1705 @Override 1706 public void onProximityNegative() { 1707 synchronized (mLock) { 1708 mProximityPositive = false; 1709 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1710 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1711 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1712 updatePowerStateLocked(); 1713 } 1714 } 1715 }; 1716 1717 private boolean shouldUseProximitySensorLocked() { 1718 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1719 } 1720 1721 /** 1722 * Updates the suspend blocker that keeps the CPU alive. 1723 * 1724 * This function must have no other side-effects. 1725 */ 1726 private void updateSuspendBlockerLocked() { 1727 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1728 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1729 final boolean autoSuspend = !needDisplaySuspendBlocker; 1730 1731 // Disable auto-suspend if needed. 1732 if (!autoSuspend) { 1733 if (mDecoupleAutoSuspendModeFromDisplayConfig) { 1734 setAutoSuspendModeLocked(false); 1735 } 1736 if (mDecoupleInteractiveModeFromDisplayConfig) { 1737 setInteractiveModeLocked(true); 1738 } 1739 } 1740 1741 // First acquire suspend blockers if needed. 1742 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1743 mWakeLockSuspendBlocker.acquire(); 1744 mHoldingWakeLockSuspendBlocker = true; 1745 } 1746 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1747 mDisplaySuspendBlocker.acquire(); 1748 mHoldingDisplaySuspendBlocker = true; 1749 } 1750 1751 // Then release suspend blockers if needed. 1752 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1753 mWakeLockSuspendBlocker.release(); 1754 mHoldingWakeLockSuspendBlocker = false; 1755 } 1756 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1757 mDisplaySuspendBlocker.release(); 1758 mHoldingDisplaySuspendBlocker = false; 1759 } 1760 1761 // Enable auto-suspend if needed. 1762 if (autoSuspend) { 1763 if (mDecoupleInteractiveModeFromDisplayConfig) { 1764 setInteractiveModeLocked(false); 1765 } 1766 if (mDecoupleAutoSuspendModeFromDisplayConfig) { 1767 setAutoSuspendModeLocked(true); 1768 } 1769 } 1770 } 1771 1772 /** 1773 * Return true if we must keep a suspend blocker active on behalf of the display. 1774 * We do so if the screen is on or is in transition between states. 1775 */ 1776 private boolean needDisplaySuspendBlockerLocked() { 1777 if (!mDisplayReady) { 1778 return true; 1779 } 1780 if (mDisplayPowerRequest.wantScreenOnNormal()) { 1781 // If we asked for the screen to be on but it is off due to the proximity 1782 // sensor then we may suspend but only if the configuration allows it. 1783 // On some hardware it may not be safe to suspend because the proximity 1784 // sensor may not be correctly configured as a wake-up source. 1785 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1786 || !mSuspendWhenScreenOffDueToProximityConfig) { 1787 return true; 1788 } 1789 } 1790 // Let the system suspend if the screen is off or dozing. 1791 return false; 1792 } 1793 1794 private void setAutoSuspendModeLocked(boolean enable) { 1795 if (enable != mAutoSuspendModeEnabled) { 1796 if (DEBUG) { 1797 Slog.d(TAG, "Setting auto-suspend mode to " + enable); 1798 } 1799 mAutoSuspendModeEnabled = enable; 1800 nativeSetAutoSuspend(enable); 1801 } 1802 } 1803 1804 private void setInteractiveModeLocked(boolean enable) { 1805 if (enable != mInteractiveModeEnabled) { 1806 if (DEBUG) { 1807 Slog.d(TAG, "Setting interactive mode to " + enable); 1808 } 1809 mInteractiveModeEnabled = enable; 1810 nativeSetInteractive(enable); 1811 } 1812 } 1813 1814 private boolean isScreenOnInternal() { 1815 synchronized (mLock) { 1816 return isScreenOnLocked(); 1817 } 1818 } 1819 1820 private boolean isScreenOnLocked() { 1821 return mWakefulness == WAKEFULNESS_AWAKE 1822 || mWakefulness == WAKEFULNESS_DREAMING; 1823 } 1824 1825 private void handleBatteryStateChangedLocked() { 1826 mDirty |= DIRTY_BATTERY_STATE; 1827 updatePowerStateLocked(); 1828 } 1829 1830 private void startWatchingForBootAnimationFinished() { 1831 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1832 } 1833 1834 private void checkIfBootAnimationFinished() { 1835 if (DEBUG) { 1836 Slog.d(TAG, "Check if boot animation finished..."); 1837 } 1838 1839 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1840 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1841 BOOT_ANIMATION_POLL_INTERVAL); 1842 return; 1843 } 1844 1845 synchronized (mLock) { 1846 if (!mBootCompleted) { 1847 Slog.i(TAG, "Boot animation finished."); 1848 handleBootCompletedLocked(); 1849 } 1850 } 1851 } 1852 1853 private void handleBootCompletedLocked() { 1854 final long now = SystemClock.uptimeMillis(); 1855 mBootCompleted = true; 1856 mDirty |= DIRTY_BOOT_COMPLETED; 1857 userActivityNoUpdateLocked( 1858 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1859 updatePowerStateLocked(); 1860 } 1861 1862 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1863 final String reason, boolean wait) { 1864 if (mHandler == null || !mSystemReady) { 1865 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1866 } 1867 1868 Runnable runnable = new Runnable() { 1869 @Override 1870 public void run() { 1871 synchronized (this) { 1872 if (shutdown) { 1873 ShutdownThread.shutdown(mContext, confirm); 1874 } else { 1875 ShutdownThread.reboot(mContext, reason, confirm); 1876 } 1877 } 1878 } 1879 }; 1880 1881 // ShutdownThread must run on a looper capable of displaying the UI. 1882 Message msg = Message.obtain(mHandler, runnable); 1883 msg.setAsynchronous(true); 1884 mHandler.sendMessage(msg); 1885 1886 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 1887 if (wait) { 1888 synchronized (runnable) { 1889 while (true) { 1890 try { 1891 runnable.wait(); 1892 } catch (InterruptedException e) { 1893 } 1894 } 1895 } 1896 } 1897 } 1898 1899 private void crashInternal(final String message) { 1900 Thread t = new Thread("PowerManagerService.crash()") { 1901 @Override 1902 public void run() { 1903 throw new RuntimeException(message); 1904 } 1905 }; 1906 try { 1907 t.start(); 1908 t.join(); 1909 } catch (InterruptedException e) { 1910 Log.wtf(TAG, e); 1911 } 1912 } 1913 1914 private void setStayOnSettingInternal(int val) { 1915 Settings.Global.putInt(mContext.getContentResolver(), 1916 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 1917 } 1918 1919 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 1920 synchronized (mLock) { 1921 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 1922 mDirty |= DIRTY_SETTINGS; 1923 updatePowerStateLocked(); 1924 } 1925 } 1926 1927 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 1928 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 1929 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 1930 } 1931 1932 private void setAttentionLightInternal(boolean on, int color) { 1933 Light light; 1934 synchronized (mLock) { 1935 if (!mSystemReady) { 1936 return; 1937 } 1938 light = mAttentionLight; 1939 } 1940 1941 // Control light outside of lock. 1942 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 1943 } 1944 1945 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 1946 synchronized (mLock) { 1947 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 1948 mScreenBrightnessOverrideFromWindowManager = brightness; 1949 mDirty |= DIRTY_SETTINGS; 1950 updatePowerStateLocked(); 1951 } 1952 } 1953 } 1954 1955 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 1956 synchronized (mLock) { 1957 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 1958 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 1959 mDirty |= DIRTY_SETTINGS; 1960 updatePowerStateLocked(); 1961 } 1962 } 1963 } 1964 1965 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 1966 synchronized (mLock) { 1967 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 1968 mTemporaryScreenBrightnessSettingOverride = brightness; 1969 mDirty |= DIRTY_SETTINGS; 1970 updatePowerStateLocked(); 1971 } 1972 } 1973 } 1974 1975 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 1976 synchronized (mLock) { 1977 // Note: This condition handles NaN because NaN is not equal to any other 1978 // value, including itself. 1979 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 1980 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 1981 mDirty |= DIRTY_SETTINGS; 1982 updatePowerStateLocked(); 1983 } 1984 } 1985 } 1986 1987 /** 1988 * Low-level function turn the device off immediately, without trying 1989 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 1990 */ 1991 public static void lowLevelShutdown() { 1992 SystemProperties.set("sys.powerctl", "shutdown"); 1993 } 1994 1995 /** 1996 * Low-level function to reboot the device. On success, this 1997 * function doesn't return. If more than 20 seconds passes from 1998 * the time a reboot is requested (120 seconds for reboot to 1999 * recovery), this method returns. 2000 * 2001 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2002 */ 2003 public static void lowLevelReboot(String reason) { 2004 if (reason == null) { 2005 reason = ""; 2006 } 2007 long duration; 2008 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2009 // If we are rebooting to go into recovery, instead of 2010 // setting sys.powerctl directly we'll start the 2011 // pre-recovery service which will do some preparation for 2012 // recovery and then reboot for us. 2013 // 2014 // This preparation can take more than 20 seconds if 2015 // there's a very large update package, so lengthen the 2016 // timeout. 2017 SystemProperties.set("ctl.start", "pre-recovery"); 2018 duration = 120 * 1000L; 2019 } else { 2020 SystemProperties.set("sys.powerctl", "reboot," + reason); 2021 duration = 20 * 1000L; 2022 } 2023 try { 2024 Thread.sleep(duration); 2025 } catch (InterruptedException e) { 2026 Thread.currentThread().interrupt(); 2027 } 2028 } 2029 2030 @Override // Watchdog.Monitor implementation 2031 public void monitor() { 2032 // Grab and release lock for watchdog monitor to detect deadlocks. 2033 synchronized (mLock) { 2034 } 2035 } 2036 2037 private void dumpInternal(PrintWriter pw) { 2038 pw.println("POWER MANAGER (dumpsys power)\n"); 2039 2040 final DisplayPowerController dpc; 2041 final WirelessChargerDetector wcd; 2042 synchronized (mLock) { 2043 pw.println("Power Manager State:"); 2044 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2045 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2046 pw.println(" mIsPowered=" + mIsPowered); 2047 pw.println(" mPlugType=" + mPlugType); 2048 pw.println(" mBatteryLevel=" + mBatteryLevel); 2049 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2050 pw.println(" mDockState=" + mDockState); 2051 pw.println(" mStayOn=" + mStayOn); 2052 pw.println(" mProximityPositive=" + mProximityPositive); 2053 pw.println(" mBootCompleted=" + mBootCompleted); 2054 pw.println(" mSystemReady=" + mSystemReady); 2055 pw.println(" mAutoSuspendModeEnabled=" + mAutoSuspendModeEnabled); 2056 pw.println(" mInteactiveModeEnabled=" + mInteractiveModeEnabled); 2057 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2058 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2059 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2060 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2061 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2062 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2063 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2064 pw.println(" mSendWakeUpFinishedNotificationWhenReady=" 2065 + mSendWakeUpFinishedNotificationWhenReady); 2066 pw.println(" mSendGoToSleepFinishedNotificationWhenReady=" 2067 + mSendGoToSleepFinishedNotificationWhenReady); 2068 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2069 pw.println(" mLastUserActivityTimeNoChangeLights=" 2070 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2071 pw.println(" mDisplayReady=" + mDisplayReady); 2072 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2073 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2074 2075 pw.println(); 2076 pw.println("Settings and Configuration:"); 2077 pw.println(" mDecoupleAutoSuspendModeFromDisplayConfig=" 2078 + mDecoupleAutoSuspendModeFromDisplayConfig); 2079 pw.println(" mDecoupleInteractiveModeFromDisplayConfig=" 2080 + mDecoupleInteractiveModeFromDisplayConfig); 2081 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2082 + mWakeUpWhenPluggedOrUnpluggedConfig); 2083 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2084 + mSuspendWhenScreenOffDueToProximityConfig); 2085 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2086 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2087 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2088 + mDreamsActivatedOnSleepByDefaultConfig); 2089 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2090 + mDreamsActivatedOnDockByDefaultConfig); 2091 pw.println(" mDreamsEnabledOnBatteryConfig=" 2092 + mDreamsEnabledOnBatteryConfig); 2093 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2094 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2095 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2096 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2097 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2098 + mDreamsBatteryLevelDrainCutoffConfig); 2099 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2100 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2101 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2102 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2103 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2104 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2105 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2106 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2107 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2108 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2109 + mScreenAutoBrightnessAdjustmentSetting); 2110 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2111 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2112 + mScreenBrightnessOverrideFromWindowManager); 2113 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2114 + mUserActivityTimeoutOverrideFromWindowManager); 2115 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2116 + mTemporaryScreenBrightnessSettingOverride); 2117 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2118 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2119 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2120 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2121 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2122 2123 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2124 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2125 pw.println(); 2126 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2127 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2128 2129 pw.println(); 2130 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2131 for (WakeLock wl : mWakeLocks) { 2132 pw.println(" " + wl); 2133 } 2134 2135 pw.println(); 2136 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2137 for (SuspendBlocker sb : mSuspendBlockers) { 2138 pw.println(" " + sb); 2139 } 2140 2141 pw.println(); 2142 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2143 2144 pw.println(); 2145 pw.println("Display Blanker: " + mDisplayBlanker); 2146 2147 dpc = mDisplayPowerController; 2148 wcd = mWirelessChargerDetector; 2149 } 2150 2151 if (dpc != null) { 2152 dpc.dump(pw); 2153 } 2154 2155 if (wcd != null) { 2156 wcd.dump(pw); 2157 } 2158 } 2159 2160 private SuspendBlocker createSuspendBlockerLocked(String name) { 2161 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2162 mSuspendBlockers.add(suspendBlocker); 2163 return suspendBlocker; 2164 } 2165 2166 private static String wakefulnessToString(int wakefulness) { 2167 switch (wakefulness) { 2168 case WAKEFULNESS_ASLEEP: 2169 return "Asleep"; 2170 case WAKEFULNESS_AWAKE: 2171 return "Awake"; 2172 case WAKEFULNESS_DREAMING: 2173 return "Dreaming"; 2174 case WAKEFULNESS_DOZING: 2175 return "Dozing"; 2176 default: 2177 return Integer.toString(wakefulness); 2178 } 2179 } 2180 2181 private static WorkSource copyWorkSource(WorkSource workSource) { 2182 return workSource != null ? new WorkSource(workSource) : null; 2183 } 2184 2185 private final class BatteryReceiver extends BroadcastReceiver { 2186 @Override 2187 public void onReceive(Context context, Intent intent) { 2188 synchronized (mLock) { 2189 handleBatteryStateChangedLocked(); 2190 } 2191 } 2192 } 2193 2194 private final class BootCompletedReceiver extends BroadcastReceiver { 2195 @Override 2196 public void onReceive(Context context, Intent intent) { 2197 // This is our early signal that the system thinks it has finished booting. 2198 // However, the boot animation may still be running for a few more seconds 2199 // since it is ultimately in charge of when it terminates. 2200 // Defer transitioning into the boot completed state until the animation exits. 2201 // We do this so that the screen does not start to dim prematurely before 2202 // the user has actually had a chance to interact with the device. 2203 startWatchingForBootAnimationFinished(); 2204 } 2205 } 2206 2207 private final class DreamReceiver extends BroadcastReceiver { 2208 @Override 2209 public void onReceive(Context context, Intent intent) { 2210 synchronized (mLock) { 2211 scheduleSandmanLocked(); 2212 } 2213 } 2214 } 2215 2216 private final class UserSwitchedReceiver extends BroadcastReceiver { 2217 @Override 2218 public void onReceive(Context context, Intent intent) { 2219 synchronized (mLock) { 2220 handleSettingsChangedLocked(); 2221 } 2222 } 2223 } 2224 2225 private final class DockReceiver extends BroadcastReceiver { 2226 @Override 2227 public void onReceive(Context context, Intent intent) { 2228 synchronized (mLock) { 2229 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2230 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2231 if (mDockState != dockState) { 2232 mDockState = dockState; 2233 mDirty |= DIRTY_DOCK_STATE; 2234 updatePowerStateLocked(); 2235 } 2236 } 2237 } 2238 } 2239 2240 private final class SettingsObserver extends ContentObserver { 2241 public SettingsObserver(Handler handler) { 2242 super(handler); 2243 } 2244 2245 @Override 2246 public void onChange(boolean selfChange, Uri uri) { 2247 synchronized (mLock) { 2248 handleSettingsChangedLocked(); 2249 } 2250 } 2251 } 2252 2253 /** 2254 * Handler for asynchronous operations performed by the power manager. 2255 */ 2256 private final class PowerManagerHandler extends Handler { 2257 public PowerManagerHandler(Looper looper) { 2258 super(looper, null, true /*async*/); 2259 } 2260 2261 @Override 2262 public void handleMessage(Message msg) { 2263 switch (msg.what) { 2264 case MSG_USER_ACTIVITY_TIMEOUT: 2265 handleUserActivityTimeout(); 2266 break; 2267 case MSG_SANDMAN: 2268 handleSandman(); 2269 break; 2270 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2271 handleScreenOnBlockerReleased(); 2272 break; 2273 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2274 checkIfBootAnimationFinished(); 2275 break; 2276 } 2277 } 2278 } 2279 2280 /** 2281 * Represents a wake lock that has been acquired by an application. 2282 */ 2283 private final class WakeLock implements IBinder.DeathRecipient { 2284 public final IBinder mLock; 2285 public int mFlags; 2286 public String mTag; 2287 public final String mPackageName; 2288 public WorkSource mWorkSource; 2289 public String mHistoryTag; 2290 public final int mOwnerUid; 2291 public final int mOwnerPid; 2292 public boolean mNotifiedAcquired; 2293 2294 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2295 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2296 mLock = lock; 2297 mFlags = flags; 2298 mTag = tag; 2299 mPackageName = packageName; 2300 mWorkSource = copyWorkSource(workSource); 2301 mHistoryTag = historyTag; 2302 mOwnerUid = ownerUid; 2303 mOwnerPid = ownerPid; 2304 } 2305 2306 @Override 2307 public void binderDied() { 2308 PowerManagerService.this.handleWakeLockDeath(this); 2309 } 2310 2311 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2312 int ownerUid, int ownerPid) { 2313 return mFlags == flags 2314 && mTag.equals(tag) 2315 && hasSameWorkSource(workSource) 2316 && mOwnerUid == ownerUid 2317 && mOwnerPid == ownerPid; 2318 } 2319 2320 public void updateProperties(int flags, String tag, String packageName, 2321 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2322 if (!mPackageName.equals(packageName)) { 2323 throw new IllegalStateException("Existing wake lock package name changed: " 2324 + mPackageName + " to " + packageName); 2325 } 2326 if (mOwnerUid != ownerUid) { 2327 throw new IllegalStateException("Existing wake lock uid changed: " 2328 + mOwnerUid + " to " + ownerUid); 2329 } 2330 if (mOwnerPid != ownerPid) { 2331 throw new IllegalStateException("Existing wake lock pid changed: " 2332 + mOwnerPid + " to " + ownerPid); 2333 } 2334 mFlags = flags; 2335 mTag = tag; 2336 updateWorkSource(workSource); 2337 mHistoryTag = historyTag; 2338 } 2339 2340 public boolean hasSameWorkSource(WorkSource workSource) { 2341 return Objects.equal(mWorkSource, workSource); 2342 } 2343 2344 public void updateWorkSource(WorkSource workSource) { 2345 mWorkSource = copyWorkSource(workSource); 2346 } 2347 2348 @Override 2349 public String toString() { 2350 return getLockLevelString() 2351 + " '" + mTag + "'" + getLockFlagsString() 2352 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2353 } 2354 2355 @SuppressWarnings("deprecation") 2356 private String getLockLevelString() { 2357 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2358 case PowerManager.FULL_WAKE_LOCK: 2359 return "FULL_WAKE_LOCK "; 2360 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2361 return "SCREEN_BRIGHT_WAKE_LOCK "; 2362 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2363 return "SCREEN_DIM_WAKE_LOCK "; 2364 case PowerManager.PARTIAL_WAKE_LOCK: 2365 return "PARTIAL_WAKE_LOCK "; 2366 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2367 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2368 case PowerManager.DOZE_WAKE_LOCK: 2369 return "DOZE_WAKE_LOCK "; 2370 default: 2371 return "??? "; 2372 } 2373 } 2374 2375 private String getLockFlagsString() { 2376 String result = ""; 2377 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2378 result += " ACQUIRE_CAUSES_WAKEUP"; 2379 } 2380 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2381 result += " ON_AFTER_RELEASE"; 2382 } 2383 return result; 2384 } 2385 } 2386 2387 private final class SuspendBlockerImpl implements SuspendBlocker { 2388 private final String mName; 2389 private int mReferenceCount; 2390 2391 public SuspendBlockerImpl(String name) { 2392 mName = name; 2393 } 2394 2395 @Override 2396 protected void finalize() throws Throwable { 2397 try { 2398 if (mReferenceCount != 0) { 2399 Log.wtf(TAG, "Suspend blocker \"" + mName 2400 + "\" was finalized without being released!"); 2401 mReferenceCount = 0; 2402 nativeReleaseSuspendBlocker(mName); 2403 } 2404 } finally { 2405 super.finalize(); 2406 } 2407 } 2408 2409 @Override 2410 public void acquire() { 2411 synchronized (this) { 2412 mReferenceCount += 1; 2413 if (mReferenceCount == 1) { 2414 if (DEBUG_SPEW) { 2415 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2416 } 2417 nativeAcquireSuspendBlocker(mName); 2418 } 2419 } 2420 } 2421 2422 @Override 2423 public void release() { 2424 synchronized (this) { 2425 mReferenceCount -= 1; 2426 if (mReferenceCount == 0) { 2427 if (DEBUG_SPEW) { 2428 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2429 } 2430 nativeReleaseSuspendBlocker(mName); 2431 } else if (mReferenceCount < 0) { 2432 Log.wtf(TAG, "Suspend blocker \"" + mName 2433 + "\" was released without being acquired!", new Throwable()); 2434 mReferenceCount = 0; 2435 } 2436 } 2437 } 2438 2439 @Override 2440 public String toString() { 2441 synchronized (this) { 2442 return mName + ": ref count=" + mReferenceCount; 2443 } 2444 } 2445 } 2446 2447 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2448 private int mNestCount; 2449 2450 public boolean isHeld() { 2451 synchronized (this) { 2452 return mNestCount != 0; 2453 } 2454 } 2455 2456 @Override 2457 public void acquire() { 2458 synchronized (this) { 2459 mNestCount += 1; 2460 if (DEBUG) { 2461 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2462 } 2463 } 2464 } 2465 2466 @Override 2467 public void release() { 2468 synchronized (this) { 2469 mNestCount -= 1; 2470 if (mNestCount < 0) { 2471 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2472 new Throwable()); 2473 mNestCount = 0; 2474 } 2475 if (mNestCount == 0) { 2476 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2477 } 2478 if (DEBUG) { 2479 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2480 } 2481 } 2482 } 2483 2484 @Override 2485 public String toString() { 2486 synchronized (this) { 2487 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2488 } 2489 } 2490 } 2491 2492 private final class DisplayBlankerImpl implements DisplayBlanker { 2493 private boolean mBlanked; 2494 2495 @Override 2496 public void blankAllDisplays() { 2497 synchronized (this) { 2498 mBlanked = true; 2499 mDisplayManagerInternal.blankAllDisplaysFromPowerManager(); 2500 if (!mDecoupleInteractiveModeFromDisplayConfig) { 2501 setInteractiveModeLocked(false); 2502 } 2503 if (!mDecoupleAutoSuspendModeFromDisplayConfig) { 2504 setAutoSuspendModeLocked(true); 2505 } 2506 } 2507 } 2508 2509 @Override 2510 public void unblankAllDisplays() { 2511 synchronized (this) { 2512 if (!mDecoupleAutoSuspendModeFromDisplayConfig) { 2513 setAutoSuspendModeLocked(false); 2514 } 2515 if (!mDecoupleInteractiveModeFromDisplayConfig) { 2516 setInteractiveModeLocked(true); 2517 } 2518 mDisplayManagerInternal.unblankAllDisplaysFromPowerManager(); 2519 mBlanked = false; 2520 } 2521 } 2522 2523 @Override 2524 public String toString() { 2525 synchronized (this) { 2526 return "blanked=" + mBlanked; 2527 } 2528 } 2529 } 2530 2531 private final class BinderService extends IPowerManager.Stub { 2532 @Override // Binder call 2533 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2534 String packageName, int uid) { 2535 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2536 } 2537 2538 @Override // Binder call 2539 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2540 WorkSource ws, String historyTag) { 2541 if (lock == null) { 2542 throw new IllegalArgumentException("lock must not be null"); 2543 } 2544 if (packageName == null) { 2545 throw new IllegalArgumentException("packageName must not be null"); 2546 } 2547 PowerManager.validateWakeLockParameters(flags, tag); 2548 2549 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2550 if (ws != null && ws.size() != 0) { 2551 mContext.enforceCallingOrSelfPermission( 2552 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2553 } else { 2554 ws = null; 2555 } 2556 2557 final int uid = Binder.getCallingUid(); 2558 final int pid = Binder.getCallingPid(); 2559 final long ident = Binder.clearCallingIdentity(); 2560 try { 2561 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2562 } finally { 2563 Binder.restoreCallingIdentity(ident); 2564 } 2565 } 2566 2567 @Override // Binder call 2568 public void releaseWakeLock(IBinder lock, int flags) { 2569 if (lock == null) { 2570 throw new IllegalArgumentException("lock must not be null"); 2571 } 2572 2573 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2574 2575 final long ident = Binder.clearCallingIdentity(); 2576 try { 2577 releaseWakeLockInternal(lock, flags); 2578 } finally { 2579 Binder.restoreCallingIdentity(ident); 2580 } 2581 } 2582 2583 @Override // Binder call 2584 public void updateWakeLockUids(IBinder lock, int[] uids) { 2585 WorkSource ws = null; 2586 2587 if (uids != null) { 2588 ws = new WorkSource(); 2589 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2590 // one at a time? 2591 for (int i = 0; i < uids.length; i++) { 2592 ws.add(uids[i]); 2593 } 2594 } 2595 updateWakeLockWorkSource(lock, ws); 2596 } 2597 2598 @Override // Binder call 2599 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws) { 2600 if (lock == null) { 2601 throw new IllegalArgumentException("lock must not be null"); 2602 } 2603 2604 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2605 if (ws != null && ws.size() != 0) { 2606 mContext.enforceCallingOrSelfPermission( 2607 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2608 } else { 2609 ws = null; 2610 } 2611 2612 final long ident = Binder.clearCallingIdentity(); 2613 try { 2614 updateWakeLockWorkSourceInternal(lock, ws); 2615 } finally { 2616 Binder.restoreCallingIdentity(ident); 2617 } 2618 } 2619 2620 @Override // Binder call 2621 public boolean isWakeLockLevelSupported(int level) { 2622 final long ident = Binder.clearCallingIdentity(); 2623 try { 2624 return isWakeLockLevelSupportedInternal(level); 2625 } finally { 2626 Binder.restoreCallingIdentity(ident); 2627 } 2628 } 2629 2630 @Override // Binder call 2631 public void userActivity(long eventTime, int event, int flags) { 2632 final long now = SystemClock.uptimeMillis(); 2633 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2634 != PackageManager.PERMISSION_GRANTED) { 2635 // Once upon a time applications could call userActivity(). 2636 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2637 // request instead of throwing a SecurityException so we don't break old apps. 2638 synchronized (mLock) { 2639 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2640 mLastWarningAboutUserActivityPermission = now; 2641 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2642 + "caller does not have DEVICE_POWER permission. " 2643 + "Please fix your app! " 2644 + " pid=" + Binder.getCallingPid() 2645 + " uid=" + Binder.getCallingUid()); 2646 } 2647 } 2648 return; 2649 } 2650 2651 if (eventTime > SystemClock.uptimeMillis()) { 2652 throw new IllegalArgumentException("event time must not be in the future"); 2653 } 2654 2655 final int uid = Binder.getCallingUid(); 2656 final long ident = Binder.clearCallingIdentity(); 2657 try { 2658 userActivityInternal(eventTime, event, flags, uid); 2659 } finally { 2660 Binder.restoreCallingIdentity(ident); 2661 } 2662 } 2663 2664 @Override // Binder call 2665 public void wakeUp(long eventTime) { 2666 if (eventTime > SystemClock.uptimeMillis()) { 2667 throw new IllegalArgumentException("event time must not be in the future"); 2668 } 2669 2670 mContext.enforceCallingOrSelfPermission( 2671 android.Manifest.permission.DEVICE_POWER, null); 2672 2673 final long ident = Binder.clearCallingIdentity(); 2674 try { 2675 wakeUpInternal(eventTime); 2676 } finally { 2677 Binder.restoreCallingIdentity(ident); 2678 } 2679 } 2680 2681 @Override // Binder call 2682 public void goToSleep(long eventTime, int reason) { 2683 if (eventTime > SystemClock.uptimeMillis()) { 2684 throw new IllegalArgumentException("event time must not be in the future"); 2685 } 2686 2687 mContext.enforceCallingOrSelfPermission( 2688 android.Manifest.permission.DEVICE_POWER, null); 2689 2690 final long ident = Binder.clearCallingIdentity(); 2691 try { 2692 goToSleepInternal(eventTime, reason); 2693 } finally { 2694 Binder.restoreCallingIdentity(ident); 2695 } 2696 } 2697 2698 @Override // Binder call 2699 public void nap(long eventTime) { 2700 if (eventTime > SystemClock.uptimeMillis()) { 2701 throw new IllegalArgumentException("event time must not be in the future"); 2702 } 2703 2704 mContext.enforceCallingOrSelfPermission( 2705 android.Manifest.permission.DEVICE_POWER, null); 2706 2707 final long ident = Binder.clearCallingIdentity(); 2708 try { 2709 napInternal(eventTime); 2710 } finally { 2711 Binder.restoreCallingIdentity(ident); 2712 } 2713 } 2714 2715 @Override // Binder call 2716 public boolean isScreenOn() { 2717 final long ident = Binder.clearCallingIdentity(); 2718 try { 2719 return isScreenOnInternal(); 2720 } finally { 2721 Binder.restoreCallingIdentity(ident); 2722 } 2723 } 2724 2725 /** 2726 * Reboots the device. 2727 * 2728 * @param confirm If true, shows a reboot confirmation dialog. 2729 * @param reason The reason for the reboot, or null if none. 2730 * @param wait If true, this call waits for the reboot to complete and does not return. 2731 */ 2732 @Override // Binder call 2733 public void reboot(boolean confirm, String reason, boolean wait) { 2734 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2735 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2736 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2737 } 2738 2739 final long ident = Binder.clearCallingIdentity(); 2740 try { 2741 shutdownOrRebootInternal(false, confirm, reason, wait); 2742 } finally { 2743 Binder.restoreCallingIdentity(ident); 2744 } 2745 } 2746 2747 /** 2748 * Shuts down the device. 2749 * 2750 * @param confirm If true, shows a shutdown confirmation dialog. 2751 * @param wait If true, this call waits for the shutdown to complete and does not return. 2752 */ 2753 @Override // Binder call 2754 public void shutdown(boolean confirm, boolean wait) { 2755 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2756 2757 final long ident = Binder.clearCallingIdentity(); 2758 try { 2759 shutdownOrRebootInternal(true, confirm, null, wait); 2760 } finally { 2761 Binder.restoreCallingIdentity(ident); 2762 } 2763 } 2764 2765 /** 2766 * Crash the runtime (causing a complete restart of the Android framework). 2767 * Requires REBOOT permission. Mostly for testing. Should not return. 2768 */ 2769 @Override // Binder call 2770 public void crash(String message) { 2771 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2772 2773 final long ident = Binder.clearCallingIdentity(); 2774 try { 2775 crashInternal(message); 2776 } finally { 2777 Binder.restoreCallingIdentity(ident); 2778 } 2779 } 2780 2781 /** 2782 * Set the setting that determines whether the device stays on when plugged in. 2783 * The argument is a bit string, with each bit specifying a power source that, 2784 * when the device is connected to that source, causes the device to stay on. 2785 * See {@link android.os.BatteryManager} for the list of power sources that 2786 * can be specified. Current values include 2787 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2788 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2789 * 2790 * Used by "adb shell svc power stayon ..." 2791 * 2792 * @param val an {@code int} containing the bits that specify which power sources 2793 * should cause the device to stay on. 2794 */ 2795 @Override // Binder call 2796 public void setStayOnSetting(int val) { 2797 mContext.enforceCallingOrSelfPermission( 2798 android.Manifest.permission.WRITE_SETTINGS, null); 2799 2800 final long ident = Binder.clearCallingIdentity(); 2801 try { 2802 setStayOnSettingInternal(val); 2803 } finally { 2804 Binder.restoreCallingIdentity(ident); 2805 } 2806 } 2807 2808 /** 2809 * Used by device administration to set the maximum screen off timeout. 2810 * 2811 * This method must only be called by the device administration policy manager. 2812 */ 2813 @Override // Binder call 2814 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2815 final long ident = Binder.clearCallingIdentity(); 2816 try { 2817 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2818 } finally { 2819 Binder.restoreCallingIdentity(ident); 2820 } 2821 } 2822 2823 /** 2824 * Used by the settings application and brightness control widgets to 2825 * temporarily override the current screen brightness setting so that the 2826 * user can observe the effect of an intended settings change without applying 2827 * it immediately. 2828 * 2829 * The override will be canceled when the setting value is next updated. 2830 * 2831 * @param brightness The overridden brightness. 2832 * 2833 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2834 */ 2835 @Override // Binder call 2836 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2837 mContext.enforceCallingOrSelfPermission( 2838 android.Manifest.permission.DEVICE_POWER, null); 2839 2840 final long ident = Binder.clearCallingIdentity(); 2841 try { 2842 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2843 } finally { 2844 Binder.restoreCallingIdentity(ident); 2845 } 2846 } 2847 2848 /** 2849 * Used by the settings application and brightness control widgets to 2850 * temporarily override the current screen auto-brightness adjustment setting so that the 2851 * user can observe the effect of an intended settings change without applying 2852 * it immediately. 2853 * 2854 * The override will be canceled when the setting value is next updated. 2855 * 2856 * @param adj The overridden brightness, or Float.NaN to disable the override. 2857 * 2858 * @see Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2859 */ 2860 @Override // Binder call 2861 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2862 mContext.enforceCallingOrSelfPermission( 2863 android.Manifest.permission.DEVICE_POWER, null); 2864 2865 final long ident = Binder.clearCallingIdentity(); 2866 try { 2867 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2868 } finally { 2869 Binder.restoreCallingIdentity(ident); 2870 } 2871 } 2872 2873 /** 2874 * Used by the phone application to make the attention LED flash when ringing. 2875 */ 2876 @Override // Binder call 2877 public void setAttentionLight(boolean on, int color) { 2878 mContext.enforceCallingOrSelfPermission( 2879 android.Manifest.permission.DEVICE_POWER, null); 2880 2881 final long ident = Binder.clearCallingIdentity(); 2882 try { 2883 setAttentionLightInternal(on, color); 2884 } finally { 2885 Binder.restoreCallingIdentity(ident); 2886 } 2887 } 2888 2889 @Override // Binder call 2890 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2891 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2892 != PackageManager.PERMISSION_GRANTED) { 2893 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2894 + Binder.getCallingPid() 2895 + ", uid=" + Binder.getCallingUid()); 2896 return; 2897 } 2898 2899 final long ident = Binder.clearCallingIdentity(); 2900 try { 2901 dumpInternal(pw); 2902 } finally { 2903 Binder.restoreCallingIdentity(ident); 2904 } 2905 } 2906 } 2907 2908 private final class LocalService extends PowerManagerInternal { 2909 /** 2910 * Used by the window manager to override the screen brightness based on the 2911 * current foreground activity. 2912 * 2913 * This method must only be called by the window manager. 2914 * 2915 * @param brightness The overridden brightness, or -1 to disable the override. 2916 */ 2917 @Override 2918 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 2919 mContext.enforceCallingOrSelfPermission( 2920 android.Manifest.permission.DEVICE_POWER, null); 2921 2922 final long ident = Binder.clearCallingIdentity(); 2923 try { 2924 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 2925 } finally { 2926 Binder.restoreCallingIdentity(ident); 2927 } 2928 } 2929 2930 /** 2931 * Used by the window manager to override the button brightness based on the 2932 * current foreground activity. 2933 * 2934 * This method must only be called by the window manager. 2935 * 2936 * @param brightness The overridden brightness, or -1 to disable the override. 2937 */ 2938 @Override 2939 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 2940 // Do nothing. 2941 // Button lights are not currently supported in the new implementation. 2942 mContext.enforceCallingOrSelfPermission( 2943 android.Manifest.permission.DEVICE_POWER, null); 2944 } 2945 2946 /** 2947 * Used by the window manager to override the user activity timeout based on the 2948 * current foreground activity. It can only be used to make the timeout shorter 2949 * than usual, not longer. 2950 * 2951 * This method must only be called by the window manager. 2952 * 2953 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 2954 */ 2955 @Override 2956 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 2957 mContext.enforceCallingOrSelfPermission( 2958 android.Manifest.permission.DEVICE_POWER, null); 2959 2960 final long ident = Binder.clearCallingIdentity(); 2961 try { 2962 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 2963 } finally { 2964 Binder.restoreCallingIdentity(ident); 2965 } 2966 } 2967 2968 @Override 2969 public void setPolicy(WindowManagerPolicy policy) { 2970 PowerManagerService.this.setPolicy(policy); 2971 } 2972 } 2973} 2974