PowerManagerService.java revision f974cc870635227ae13201480fb2f019d153af22
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.power; 18 19import com.android.internal.app.IAppOpsService; 20import com.android.internal.app.IBatteryStats; 21import com.android.server.BatteryService; 22import com.android.server.EventLogTags; 23import com.android.server.LocalServices; 24import com.android.server.ServiceThread; 25import com.android.server.lights.Light; 26import com.android.server.lights.LightsManager; 27import com.android.server.Watchdog; 28 29import android.Manifest; 30import android.content.BroadcastReceiver; 31import android.content.ContentResolver; 32import android.content.Context; 33import android.content.Intent; 34import android.content.IntentFilter; 35import android.content.pm.PackageManager; 36import android.content.res.Resources; 37import android.database.ContentObserver; 38import android.hardware.SensorManager; 39import android.hardware.SystemSensorManager; 40import android.hardware.display.DisplayManagerInternal; 41import android.hardware.display.DisplayManagerInternal.DisplayPowerRequest; 42import android.net.Uri; 43import android.os.BatteryManager; 44import android.os.Binder; 45import android.os.Handler; 46import android.os.IBinder; 47import android.os.IPowerManager; 48import android.os.Looper; 49import android.os.Message; 50import android.os.PowerManager; 51import android.os.PowerManagerInternal; 52import android.os.Process; 53import android.os.RemoteException; 54import android.os.SystemClock; 55import android.os.SystemProperties; 56import android.os.SystemService; 57import android.os.UserHandle; 58import android.os.WorkSource; 59import android.provider.Settings; 60import android.service.dreams.DreamManagerInternal; 61import android.util.EventLog; 62import android.util.Log; 63import android.util.Slog; 64import android.util.TimeUtils; 65import android.view.Display; 66import android.view.WindowManagerPolicy; 67 68import java.io.FileDescriptor; 69import java.io.PrintWriter; 70import java.util.ArrayList; 71 72import libcore.util.Objects; 73 74/** 75 * The power manager service is responsible for coordinating power management 76 * functions on the device. 77 */ 78public final class PowerManagerService extends com.android.server.SystemService 79 implements Watchdog.Monitor { 80 private static final String TAG = "PowerManagerService"; 81 82 private static final boolean DEBUG = false; 83 private static final boolean DEBUG_SPEW = DEBUG && true; 84 85 // Message: Sent when a user activity timeout occurs to update the power state. 86 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 87 // Message: Sent when the device enters or exits a dreaming or dozing state. 88 private static final int MSG_SANDMAN = 2; 89 // Message: Sent when the screen on blocker is released. 90 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 91 // Message: Sent to poll whether the boot animation has terminated. 92 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 93 94 // Dirty bit: mWakeLocks changed 95 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 96 // Dirty bit: mWakefulness changed 97 private static final int DIRTY_WAKEFULNESS = 1 << 1; 98 // Dirty bit: user activity was poked or may have timed out 99 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 100 // Dirty bit: actual display power state was updated asynchronously 101 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 102 // Dirty bit: mBootCompleted changed 103 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 104 // Dirty bit: settings changed 105 private static final int DIRTY_SETTINGS = 1 << 5; 106 // Dirty bit: mIsPowered changed 107 private static final int DIRTY_IS_POWERED = 1 << 6; 108 // Dirty bit: mStayOn changed 109 private static final int DIRTY_STAY_ON = 1 << 7; 110 // Dirty bit: battery state changed 111 private static final int DIRTY_BATTERY_STATE = 1 << 8; 112 // Dirty bit: proximity state changed 113 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 114 // Dirty bit: screen on blocker state became held or unheld 115 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 116 // Dirty bit: dock state changed 117 private static final int DIRTY_DOCK_STATE = 1 << 11; 118 119 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 120 // The screen should be off or in the process of being turned off by the display controller. 121 // The device typically passes through the dozing state first. 122 private static final int WAKEFULNESS_ASLEEP = 0; 123 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 124 // When the user activity timeout expires, the device may start dreaming or go to sleep. 125 private static final int WAKEFULNESS_AWAKE = 1; 126 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 127 // which ends the dream. The device goes to sleep when goToSleep() is called, when 128 // the dream ends or when unplugged. 129 // User activity may brighten the screen but does not end the dream. 130 private static final int WAKEFULNESS_DREAMING = 2; 131 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 132 // low-power "doze" dream to run which keeps the display on but lets the application 133 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 134 // The device fully goes to sleep if the dream cannot be started or ends on its own. 135 private static final int WAKEFULNESS_DOZING = 3; 136 137 // Summarizes the state of all active wakelocks. 138 private static final int WAKE_LOCK_CPU = 1 << 0; 139 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 140 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 141 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 142 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 143 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 144 private static final int WAKE_LOCK_DOZE = 1 << 6; 145 146 // Summarizes the user activity state. 147 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 148 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 149 150 // Default and minimum screen off timeout in milliseconds. 151 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 152 private static final int MINIMUM_SCREEN_OFF_TIMEOUT = 10 * 1000; 153 154 // The screen dim duration, in milliseconds. 155 // This is subtracted from the end of the screen off timeout so the 156 // minimum screen off timeout should be longer than this. 157 private static final int SCREEN_DIM_DURATION = 7 * 1000; 158 159 // The maximum screen dim time expressed as a ratio relative to the screen 160 // off timeout. If the screen off timeout is very short then we want the 161 // dim timeout to also be quite short so that most of the time is spent on. 162 // Otherwise the user won't get much screen on time before dimming occurs. 163 private static final float MAXIMUM_SCREEN_DIM_RATIO = 0.2f; 164 165 // The name of the boot animation service in init.rc. 166 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 167 168 // Poll interval in milliseconds for watching boot animation finished. 169 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 170 171 //powerHint 172 private static final int POWER_HINT_LOW_POWER_MODE = 5; 173 private static boolean mLowPowerModeEnabled; 174 175 private final Context mContext; 176 private LightsManager mLightsManager; 177 private BatteryService mBatteryService; 178 private DisplayManagerInternal mDisplayManagerInternal; 179 private IBatteryStats mBatteryStats; 180 private IAppOpsService mAppOps; 181 private ServiceThread mHandlerThread; 182 private PowerManagerHandler mHandler; 183 private WindowManagerPolicy mPolicy; 184 private Notifier mNotifier; 185 private WirelessChargerDetector mWirelessChargerDetector; 186 private SettingsObserver mSettingsObserver; 187 private DreamManagerInternal mDreamManager; 188 private Light mAttentionLight; 189 190 private final Object mLock = new Object(); 191 192 // A bitfield that indicates what parts of the power state have 193 // changed and need to be recalculated. 194 private int mDirty; 195 196 // Indicates whether the device is awake or asleep or somewhere in between. 197 // This is distinct from the screen power state, which is managed separately. 198 private int mWakefulness; 199 200 // True if the sandman has just been summoned for the first time since entering the 201 // dreaming or dozing state. Indicates whether a new dream should begin. 202 private boolean mSandmanSummoned; 203 204 // True if MSG_SANDMAN has been scheduled. 205 private boolean mSandmanScheduled; 206 207 // Table of all suspend blockers. 208 // There should only be a few of these. 209 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 210 211 // Table of all wake locks acquired by applications. 212 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 213 214 // A bitfield that summarizes the state of all active wakelocks. 215 private int mWakeLockSummary; 216 217 // True if the device is in an interactive state. 218 private boolean mInteractive; 219 private boolean mInteractiveChanging; 220 221 // If true, instructs the display controller to wait for the proximity sensor to 222 // go negative before turning the screen on. 223 private boolean mRequestWaitForNegativeProximity; 224 225 // Timestamp of the last time the device was awoken or put to sleep. 226 private long mLastWakeTime; 227 private long mLastSleepTime; 228 229 // Timestamp of the last call to user activity. 230 private long mLastUserActivityTime; 231 private long mLastUserActivityTimeNoChangeLights; 232 233 // A bitfield that summarizes the effect of the user activity timer. 234 // A zero value indicates that the user activity timer has expired. 235 private int mUserActivitySummary; 236 237 // The desired display power state. The actual state may lag behind the 238 // requested because it is updated asynchronously by the display power controller. 239 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 240 241 // True if the display power state has been fully applied, which means the display 242 // is actually on or actually off or whatever was requested. 243 private boolean mDisplayReady; 244 245 // The suspend blocker used to keep the CPU alive when an application has acquired 246 // a wake lock. 247 private final SuspendBlocker mWakeLockSuspendBlocker; 248 249 // True if the wake lock suspend blocker has been acquired. 250 private boolean mHoldingWakeLockSuspendBlocker; 251 252 // The suspend blocker used to keep the CPU alive when the display is on, the 253 // display is getting ready or there is user activity (in which case the display 254 // must be on). 255 private final SuspendBlocker mDisplaySuspendBlocker; 256 257 // True if the display suspend blocker has been acquired. 258 private boolean mHoldingDisplaySuspendBlocker; 259 260 // The screen on blocker used to keep the screen from turning on while the lock 261 // screen is coming up. 262 private final ScreenOnBlockerImpl mScreenOnBlocker; 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 mHalAutoSuspendModeEnabled; 273 274 // True if interactive mode is enabled. 275 // Refer to power.h. 276 private boolean mHalInteractiveModeEnabled; 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 mDecoupleHalAutoSuspendModeFromDisplayConfig; 297 298 // True to decouple interactive mode from the display state. 299 private boolean mDecoupleHalInteractiveModeFromDisplayConfig; 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 nativeAcquireSuspendBlocker(String name); 405 private static native void nativeReleaseSuspendBlocker(String name); 406 private static native void nativeSetInteractive(boolean enable); 407 private static native void nativeSetAutoSuspend(boolean enable); 408 private static native void nativeSendPowerHint(int hintId, int data); 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 mHalAutoSuspendModeEnabled = false; 419 mHalInteractiveModeEnabled = true; 420 421 mScreenOnBlocker = new ScreenOnBlockerImpl(); 422 mWakefulness = WAKEFULNESS_AWAKE; 423 mInteractive = true; 424 425 nativeInit(); 426 nativeSetAutoSuspend(false); 427 nativeSetInteractive(true); 428 } 429 } 430 431 @Override 432 public void onStart() { 433 publishBinderService(Context.POWER_SERVICE, new BinderService()); 434 publishLocalService(PowerManagerInternal.class, new LocalService()); 435 } 436 437 /** 438 * Initialize the power manager. 439 * Must be called before any other functions within the power manager are called. 440 */ 441 public void init(LightsManager ls, 442 BatteryService bs, IBatteryStats bss, 443 IAppOpsService appOps) { 444 mLightsManager = ls; 445 mBatteryService = bs; 446 mBatteryStats = bss; 447 mAppOps = appOps; 448 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 449 mHandlerThread = new ServiceThread(TAG, 450 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 451 mHandlerThread.start(); 452 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 453 454 Watchdog.getInstance().addMonitor(this); 455 Watchdog.getInstance().addThread(mHandler); 456 } 457 458 void setPolicy(WindowManagerPolicy policy) { 459 synchronized (mLock) { 460 mPolicy = policy; 461 } 462 } 463 464 public void systemReady() { 465 synchronized (mLock) { 466 mSystemReady = true; 467 mDreamManager = LocalServices.getService(DreamManagerInternal.class); 468 469 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 470 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 471 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 472 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 473 474 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 475 476 // The notifier runs on the system server's main looper so as not to interfere 477 // with the animations and other critical functions of the power manager. 478 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 479 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 480 mScreenOnBlocker, mPolicy); 481 482 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 483 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 484 mHandler); 485 mSettingsObserver = new SettingsObserver(mHandler); 486 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 487 488 // Initialize display power management. 489 mDisplayManagerInternal.initPowerManagement( 490 mDisplayPowerCallbacks, mHandler, sensorManager); 491 492 // Register for broadcasts from other components of the system. 493 IntentFilter filter = new IntentFilter(); 494 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 495 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 496 497 filter = new IntentFilter(); 498 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 499 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 500 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 501 502 filter = new IntentFilter(); 503 filter.addAction(Intent.ACTION_DREAMING_STARTED); 504 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 505 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 506 507 filter = new IntentFilter(); 508 filter.addAction(Intent.ACTION_USER_SWITCHED); 509 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 510 511 filter = new IntentFilter(); 512 filter.addAction(Intent.ACTION_DOCK_EVENT); 513 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 514 515 // Register for settings changes. 516 final ContentResolver resolver = mContext.getContentResolver(); 517 resolver.registerContentObserver(Settings.Secure.getUriFor( 518 Settings.Secure.SCREENSAVER_ENABLED), 519 false, mSettingsObserver, UserHandle.USER_ALL); 520 resolver.registerContentObserver(Settings.Secure.getUriFor( 521 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 522 false, mSettingsObserver, UserHandle.USER_ALL); 523 resolver.registerContentObserver(Settings.Secure.getUriFor( 524 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 525 false, mSettingsObserver, UserHandle.USER_ALL); 526 resolver.registerContentObserver(Settings.System.getUriFor( 527 Settings.System.SCREEN_OFF_TIMEOUT), 528 false, mSettingsObserver, UserHandle.USER_ALL); 529 resolver.registerContentObserver(Settings.Global.getUriFor( 530 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 531 false, mSettingsObserver, UserHandle.USER_ALL); 532 resolver.registerContentObserver(Settings.System.getUriFor( 533 Settings.System.SCREEN_BRIGHTNESS), 534 false, mSettingsObserver, UserHandle.USER_ALL); 535 resolver.registerContentObserver(Settings.System.getUriFor( 536 Settings.System.SCREEN_BRIGHTNESS_MODE), 537 false, mSettingsObserver, UserHandle.USER_ALL); 538 resolver.registerContentObserver(Settings.Global.getUriFor( 539 Settings.Global.LOW_POWER_MODE), 540 false, mSettingsObserver, UserHandle.USER_ALL); 541 // Go. 542 readConfigurationLocked(); 543 updateSettingsLocked(); 544 mDirty |= DIRTY_BATTERY_STATE; 545 updatePowerStateLocked(); 546 } 547 } 548 549 private void readConfigurationLocked() { 550 final Resources resources = mContext.getResources(); 551 552 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 553 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 554 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 555 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 556 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 557 com.android.internal.R.bool.config_unplugTurnsOnScreen); 558 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 559 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 560 mDreamsSupportedConfig = resources.getBoolean( 561 com.android.internal.R.bool.config_dreamsSupported); 562 mDreamsEnabledByDefaultConfig = resources.getBoolean( 563 com.android.internal.R.bool.config_dreamsEnabledByDefault); 564 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 565 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 566 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 567 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 568 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 569 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 570 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 571 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 572 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 573 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 574 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 575 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 576 } 577 578 private void updateSettingsLocked() { 579 final ContentResolver resolver = mContext.getContentResolver(); 580 581 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 582 Settings.Secure.SCREENSAVER_ENABLED, 583 mDreamsEnabledByDefaultConfig ? 1 : 0, 584 UserHandle.USER_CURRENT) != 0); 585 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 586 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 587 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 588 UserHandle.USER_CURRENT) != 0); 589 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 590 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 591 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 592 UserHandle.USER_CURRENT) != 0); 593 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 594 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 595 UserHandle.USER_CURRENT); 596 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 597 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 598 599 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 600 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 601 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 602 UserHandle.USER_CURRENT); 603 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 604 mTemporaryScreenBrightnessSettingOverride = -1; 605 } 606 607 final float oldScreenAutoBrightnessAdjustmentSetting = 608 mScreenAutoBrightnessAdjustmentSetting; 609 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 610 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 611 UserHandle.USER_CURRENT); 612 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 613 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 614 } 615 616 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 617 Settings.System.SCREEN_BRIGHTNESS_MODE, 618 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 619 620 boolean mIsEnabled = Settings.Global.getInt(resolver, 621 Settings.Global.LOW_POWER_MODE, 0) != 0; 622 if (mIsEnabled != mLowPowerModeEnabled) { 623 BinderService bs = new BinderService(); 624 bs.powerHint(POWER_HINT_LOW_POWER_MODE, mIsEnabled ? 1 : 0); 625 mLowPowerModeEnabled = mIsEnabled; 626 } 627 628 mDirty |= DIRTY_SETTINGS; 629 } 630 631 private void handleSettingsChangedLocked() { 632 updateSettingsLocked(); 633 updatePowerStateLocked(); 634 } 635 636 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 637 WorkSource ws, String historyTag, int uid, int pid) { 638 synchronized (mLock) { 639 if (DEBUG_SPEW) { 640 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 641 + ", flags=0x" + Integer.toHexString(flags) 642 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 643 } 644 645 WakeLock wakeLock; 646 int index = findWakeLockIndexLocked(lock); 647 if (index >= 0) { 648 wakeLock = mWakeLocks.get(index); 649 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 650 // Update existing wake lock. This shouldn't happen but is harmless. 651 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 652 uid, pid, ws, historyTag); 653 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 654 } 655 } else { 656 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 657 try { 658 lock.linkToDeath(wakeLock, 0); 659 } catch (RemoteException ex) { 660 throw new IllegalArgumentException("Wake lock is already dead."); 661 } 662 notifyWakeLockAcquiredLocked(wakeLock); 663 mWakeLocks.add(wakeLock); 664 } 665 666 applyWakeLockFlagsOnAcquireLocked(wakeLock); 667 mDirty |= DIRTY_WAKE_LOCKS; 668 updatePowerStateLocked(); 669 } 670 } 671 672 @SuppressWarnings("deprecation") 673 private static boolean isScreenLock(final WakeLock wakeLock) { 674 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 675 case PowerManager.FULL_WAKE_LOCK: 676 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 677 case PowerManager.SCREEN_DIM_WAKE_LOCK: 678 return true; 679 } 680 return false; 681 } 682 683 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 684 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 685 && isScreenLock(wakeLock)) { 686 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 687 } 688 } 689 690 private void releaseWakeLockInternal(IBinder lock, int flags) { 691 synchronized (mLock) { 692 int index = findWakeLockIndexLocked(lock); 693 if (index < 0) { 694 if (DEBUG_SPEW) { 695 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 696 + " [not found], flags=0x" + Integer.toHexString(flags)); 697 } 698 return; 699 } 700 701 WakeLock wakeLock = mWakeLocks.get(index); 702 if (DEBUG_SPEW) { 703 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 704 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 705 } 706 707 mWakeLocks.remove(index); 708 notifyWakeLockReleasedLocked(wakeLock); 709 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 710 711 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 712 mRequestWaitForNegativeProximity = true; 713 } 714 715 applyWakeLockFlagsOnReleaseLocked(wakeLock); 716 mDirty |= DIRTY_WAKE_LOCKS; 717 updatePowerStateLocked(); 718 } 719 } 720 721 private void handleWakeLockDeath(WakeLock wakeLock) { 722 synchronized (mLock) { 723 if (DEBUG_SPEW) { 724 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 725 + " [" + wakeLock.mTag + "]"); 726 } 727 728 int index = mWakeLocks.indexOf(wakeLock); 729 if (index < 0) { 730 return; 731 } 732 733 mWakeLocks.remove(index); 734 notifyWakeLockReleasedLocked(wakeLock); 735 736 applyWakeLockFlagsOnReleaseLocked(wakeLock); 737 mDirty |= DIRTY_WAKE_LOCKS; 738 updatePowerStateLocked(); 739 } 740 } 741 742 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 743 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 744 && isScreenLock(wakeLock)) { 745 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 746 PowerManager.USER_ACTIVITY_EVENT_OTHER, 747 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 748 wakeLock.mOwnerUid); 749 } 750 } 751 752 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag) { 753 synchronized (mLock) { 754 int index = findWakeLockIndexLocked(lock); 755 if (index < 0) { 756 if (DEBUG_SPEW) { 757 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 758 + " [not found], ws=" + ws); 759 } 760 throw new IllegalArgumentException("Wake lock not active"); 761 } 762 763 WakeLock wakeLock = mWakeLocks.get(index); 764 if (DEBUG_SPEW) { 765 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 766 + " [" + wakeLock.mTag + "], ws=" + ws); 767 } 768 769 if (!wakeLock.hasSameWorkSource(ws)) { 770 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 771 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 772 ws, historyTag); 773 wakeLock.mHistoryTag = historyTag; 774 wakeLock.updateWorkSource(ws); 775 } 776 } 777 } 778 779 private int findWakeLockIndexLocked(IBinder lock) { 780 final int count = mWakeLocks.size(); 781 for (int i = 0; i < count; i++) { 782 if (mWakeLocks.get(i).mLock == lock) { 783 return i; 784 } 785 } 786 return -1; 787 } 788 789 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 790 if (mSystemReady) { 791 wakeLock.mNotifiedAcquired = true; 792 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 793 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 794 wakeLock.mHistoryTag); 795 } 796 } 797 798 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 799 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 800 if (mSystemReady && wakeLock.mNotifiedAcquired) { 801 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 802 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 803 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 804 } 805 } 806 807 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 808 if (mSystemReady && wakeLock.mNotifiedAcquired) { 809 wakeLock.mNotifiedAcquired = false; 810 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 811 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 812 } 813 } 814 815 @SuppressWarnings("deprecation") 816 private boolean isWakeLockLevelSupportedInternal(int level) { 817 synchronized (mLock) { 818 switch (level) { 819 case PowerManager.PARTIAL_WAKE_LOCK: 820 case PowerManager.SCREEN_DIM_WAKE_LOCK: 821 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 822 case PowerManager.FULL_WAKE_LOCK: 823 case PowerManager.DOZE_WAKE_LOCK: 824 return true; 825 826 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 827 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 828 829 default: 830 return false; 831 } 832 } 833 } 834 835 // Called from native code. 836 private void userActivityFromNative(long eventTime, int event, int flags) { 837 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 838 } 839 840 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 841 synchronized (mLock) { 842 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 843 updatePowerStateLocked(); 844 } 845 } 846 } 847 848 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 849 if (DEBUG_SPEW) { 850 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 851 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 852 + ", uid=" + uid); 853 } 854 855 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 856 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 857 || !mBootCompleted || !mSystemReady) { 858 return false; 859 } 860 861 mNotifier.onUserActivity(event, uid); 862 863 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 864 if (eventTime > mLastUserActivityTimeNoChangeLights 865 && eventTime > mLastUserActivityTime) { 866 mLastUserActivityTimeNoChangeLights = eventTime; 867 mDirty |= DIRTY_USER_ACTIVITY; 868 return true; 869 } 870 } else { 871 if (eventTime > mLastUserActivityTime) { 872 mLastUserActivityTime = eventTime; 873 mDirty |= DIRTY_USER_ACTIVITY; 874 return true; 875 } 876 } 877 return false; 878 } 879 880 private void wakeUpInternal(long eventTime) { 881 synchronized (mLock) { 882 if (wakeUpNoUpdateLocked(eventTime)) { 883 updatePowerStateLocked(); 884 } 885 } 886 } 887 888 private boolean wakeUpNoUpdateLocked(long eventTime) { 889 if (DEBUG_SPEW) { 890 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 891 } 892 893 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 894 || !mBootCompleted || !mSystemReady) { 895 return false; 896 } 897 898 switch (mWakefulness) { 899 case WAKEFULNESS_ASLEEP: 900 Slog.i(TAG, "Waking up from sleep..."); 901 break; 902 case WAKEFULNESS_DREAMING: 903 Slog.i(TAG, "Waking up from dream..."); 904 break; 905 case WAKEFULNESS_DOZING: 906 Slog.i(TAG, "Waking up from dozing..."); 907 break; 908 } 909 910 mLastWakeTime = eventTime; 911 mDirty |= DIRTY_WAKEFULNESS; 912 mWakefulness = WAKEFULNESS_AWAKE; 913 setInteractiveStateLocked(true, 0); 914 915 userActivityNoUpdateLocked( 916 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 917 return true; 918 } 919 920 private void goToSleepInternal(long eventTime, int reason) { 921 synchronized (mLock) { 922 if (goToSleepNoUpdateLocked(eventTime, reason)) { 923 updatePowerStateLocked(); 924 } 925 } 926 } 927 928 // This method is called goToSleep for historical reasons but we actually start 929 // dozing before really going to sleep. 930 @SuppressWarnings("deprecation") 931 private boolean goToSleepNoUpdateLocked(long eventTime, int reason) { 932 if (DEBUG_SPEW) { 933 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime + ", reason=" + reason); 934 } 935 936 if (eventTime < mLastWakeTime 937 || mWakefulness == WAKEFULNESS_ASLEEP 938 || mWakefulness == WAKEFULNESS_DOZING 939 || !mBootCompleted || !mSystemReady) { 940 return false; 941 } 942 943 switch (reason) { 944 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 945 Slog.i(TAG, "Going to sleep due to device administration policy..."); 946 break; 947 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 948 Slog.i(TAG, "Going to sleep due to screen timeout..."); 949 break; 950 default: 951 Slog.i(TAG, "Going to sleep by user request..."); 952 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 953 break; 954 } 955 956 mLastSleepTime = eventTime; 957 mDirty |= DIRTY_WAKEFULNESS; 958 mWakefulness = WAKEFULNESS_DOZING; 959 mSandmanSummoned = true; 960 setInteractiveStateLocked(false, reason); 961 962 // Report the number of wake locks that will be cleared by going to sleep. 963 int numWakeLocksCleared = 0; 964 final int numWakeLocks = mWakeLocks.size(); 965 for (int i = 0; i < numWakeLocks; i++) { 966 final WakeLock wakeLock = mWakeLocks.get(i); 967 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 968 case PowerManager.FULL_WAKE_LOCK: 969 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 970 case PowerManager.SCREEN_DIM_WAKE_LOCK: 971 numWakeLocksCleared += 1; 972 break; 973 } 974 } 975 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 976 return true; 977 } 978 979 private void napInternal(long eventTime) { 980 synchronized (mLock) { 981 if (napNoUpdateLocked(eventTime)) { 982 updatePowerStateLocked(); 983 } 984 } 985 } 986 987 private boolean napNoUpdateLocked(long eventTime) { 988 if (DEBUG_SPEW) { 989 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 990 } 991 992 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 993 || !mBootCompleted || !mSystemReady) { 994 return false; 995 } 996 997 Slog.i(TAG, "Nap time..."); 998 999 mDirty |= DIRTY_WAKEFULNESS; 1000 mWakefulness = WAKEFULNESS_DREAMING; 1001 mSandmanSummoned = true; 1002 setInteractiveStateLocked(true, 0); 1003 return true; 1004 } 1005 1006 // Done dozing, drop everything and go to sleep. 1007 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 1008 if (DEBUG_SPEW) { 1009 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 1010 } 1011 1012 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1013 || !mBootCompleted || !mSystemReady) { 1014 return false; 1015 } 1016 1017 Slog.i(TAG, "Sleeping..."); 1018 1019 mDirty |= DIRTY_WAKEFULNESS; 1020 mWakefulness = WAKEFULNESS_ASLEEP; 1021 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1022 return true; 1023 } 1024 1025 private void setInteractiveStateLocked(boolean interactive, int reason) { 1026 if (mInteractive != interactive) { 1027 finishInteractiveStateChangeLocked(); 1028 1029 mInteractive = interactive; 1030 mInteractiveChanging = true; 1031 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1032 } 1033 } 1034 1035 private void finishInteractiveStateChangeLocked() { 1036 if (mInteractiveChanging) { 1037 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1038 mInteractiveChanging = false; 1039 } 1040 } 1041 1042 /** 1043 * Updates the global power state based on dirty bits recorded in mDirty. 1044 * 1045 * This is the main function that performs power state transitions. 1046 * We centralize them here so that we can recompute the power state completely 1047 * each time something important changes, and ensure that we do it the same 1048 * way each time. The point is to gather all of the transition logic here. 1049 */ 1050 private void updatePowerStateLocked() { 1051 if (!mSystemReady || mDirty == 0) { 1052 return; 1053 } 1054 if (!Thread.holdsLock(mLock)) { 1055 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1056 } 1057 1058 // Phase 0: Basic state updates. 1059 updateIsPoweredLocked(mDirty); 1060 updateStayOnLocked(mDirty); 1061 1062 // Phase 1: Update wakefulness. 1063 // Loop because the wake lock and user activity computations are influenced 1064 // by changes in wakefulness. 1065 final long now = SystemClock.uptimeMillis(); 1066 int dirtyPhase2 = 0; 1067 for (;;) { 1068 int dirtyPhase1 = mDirty; 1069 dirtyPhase2 |= dirtyPhase1; 1070 mDirty = 0; 1071 1072 updateWakeLockSummaryLocked(dirtyPhase1); 1073 updateUserActivitySummaryLocked(now, dirtyPhase1); 1074 if (!updateWakefulnessLocked(dirtyPhase1)) { 1075 break; 1076 } 1077 } 1078 1079 // Phase 2: Update dreams and display power state. 1080 updateDreamLocked(dirtyPhase2); 1081 updateDisplayPowerStateLocked(dirtyPhase2); 1082 1083 // Phase 3: Send notifications, if needed. 1084 if (mDisplayReady) { 1085 finishInteractiveStateChangeLocked(); 1086 } 1087 1088 // Phase 4: Update suspend blocker. 1089 // Because we might release the last suspend blocker here, we need to make sure 1090 // we finished everything else first! 1091 updateSuspendBlockerLocked(); 1092 } 1093 1094 /** 1095 * Updates the value of mIsPowered. 1096 * Sets DIRTY_IS_POWERED if a change occurred. 1097 */ 1098 private void updateIsPoweredLocked(int dirty) { 1099 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1100 final boolean wasPowered = mIsPowered; 1101 final int oldPlugType = mPlugType; 1102 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1103 mPlugType = mBatteryService.getPlugType(); 1104 mBatteryLevel = mBatteryService.getBatteryLevel(); 1105 1106 if (DEBUG_SPEW) { 1107 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1108 + ", mIsPowered=" + mIsPowered 1109 + ", oldPlugType=" + oldPlugType 1110 + ", mPlugType=" + mPlugType 1111 + ", mBatteryLevel=" + mBatteryLevel); 1112 } 1113 1114 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1115 mDirty |= DIRTY_IS_POWERED; 1116 1117 // Update wireless dock detection state. 1118 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1119 mIsPowered, mPlugType, mBatteryLevel); 1120 1121 // Treat plugging and unplugging the devices as a user activity. 1122 // Users find it disconcerting when they plug or unplug the device 1123 // and it shuts off right away. 1124 // Some devices also wake the device when plugged or unplugged because 1125 // they don't have a charging LED. 1126 final long now = SystemClock.uptimeMillis(); 1127 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1128 dockedOnWirelessCharger)) { 1129 wakeUpNoUpdateLocked(now); 1130 } 1131 userActivityNoUpdateLocked( 1132 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1133 1134 // Tell the notifier whether wireless charging has started so that 1135 // it can provide feedback to the user. 1136 if (dockedOnWirelessCharger) { 1137 mNotifier.onWirelessChargingStarted(); 1138 } 1139 } 1140 } 1141 } 1142 1143 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1144 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1145 // Don't wake when powered unless configured to do so. 1146 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1147 return false; 1148 } 1149 1150 // Don't wake when undocked from wireless charger. 1151 // See WirelessChargerDetector for justification. 1152 if (wasPowered && !mIsPowered 1153 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1154 return false; 1155 } 1156 1157 // Don't wake when docked on wireless charger unless we are certain of it. 1158 // See WirelessChargerDetector for justification. 1159 if (!wasPowered && mIsPowered 1160 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1161 && !dockedOnWirelessCharger) { 1162 return false; 1163 } 1164 1165 // If already dreaming and becoming powered, then don't wake. 1166 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1167 return false; 1168 } 1169 1170 // Otherwise wake up! 1171 return true; 1172 } 1173 1174 /** 1175 * Updates the value of mStayOn. 1176 * Sets DIRTY_STAY_ON if a change occurred. 1177 */ 1178 private void updateStayOnLocked(int dirty) { 1179 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1180 final boolean wasStayOn = mStayOn; 1181 if (mStayOnWhilePluggedInSetting != 0 1182 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1183 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1184 } else { 1185 mStayOn = false; 1186 } 1187 1188 if (mStayOn != wasStayOn) { 1189 mDirty |= DIRTY_STAY_ON; 1190 } 1191 } 1192 } 1193 1194 /** 1195 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1196 * Note that most wake-locks are ignored when the system is asleep. 1197 * 1198 * This function must have no other side-effects. 1199 */ 1200 @SuppressWarnings("deprecation") 1201 private void updateWakeLockSummaryLocked(int dirty) { 1202 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1203 mWakeLockSummary = 0; 1204 1205 final int numWakeLocks = mWakeLocks.size(); 1206 for (int i = 0; i < numWakeLocks; i++) { 1207 final WakeLock wakeLock = mWakeLocks.get(i); 1208 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1209 case PowerManager.PARTIAL_WAKE_LOCK: 1210 mWakeLockSummary |= WAKE_LOCK_CPU; 1211 break; 1212 case PowerManager.FULL_WAKE_LOCK: 1213 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1214 break; 1215 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1216 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1217 break; 1218 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1219 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1220 break; 1221 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1222 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1223 break; 1224 case PowerManager.DOZE_WAKE_LOCK: 1225 mWakeLockSummary |= WAKE_LOCK_DOZE; 1226 break; 1227 } 1228 } 1229 1230 // Cancel wake locks that make no sense based on the current state. 1231 if (mWakefulness != WAKEFULNESS_DOZING) { 1232 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1233 } 1234 if (mWakefulness == WAKEFULNESS_ASLEEP 1235 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1236 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1237 | WAKE_LOCK_BUTTON_BRIGHT); 1238 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1239 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1240 } 1241 } 1242 1243 // Infer implied wake locks where necessary based on the current state. 1244 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1245 if (mWakefulness == WAKEFULNESS_AWAKE) { 1246 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1247 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1248 mWakeLockSummary |= WAKE_LOCK_CPU; 1249 } 1250 } 1251 1252 if (DEBUG_SPEW) { 1253 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1254 + wakefulnessToString(mWakefulness) 1255 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1256 } 1257 } 1258 } 1259 1260 /** 1261 * Updates the value of mUserActivitySummary to summarize the user requested 1262 * state of the system such as whether the screen should be bright or dim. 1263 * Note that user activity is ignored when the system is asleep. 1264 * 1265 * This function must have no other side-effects. 1266 */ 1267 private void updateUserActivitySummaryLocked(long now, int dirty) { 1268 // Update the status of the user activity timeout timer. 1269 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1270 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1271 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1272 1273 long nextTimeout = 0; 1274 if (mWakefulness == WAKEFULNESS_AWAKE 1275 || mWakefulness == WAKEFULNESS_DREAMING 1276 || mWakefulness == WAKEFULNESS_DOZING) { 1277 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1278 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1279 1280 mUserActivitySummary = 0; 1281 if (mLastUserActivityTime >= mLastWakeTime) { 1282 nextTimeout = mLastUserActivityTime 1283 + screenOffTimeout - screenDimDuration; 1284 if (now < nextTimeout) { 1285 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1286 } else { 1287 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1288 if (now < nextTimeout) { 1289 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1290 } 1291 } 1292 } 1293 if (mUserActivitySummary == 0 1294 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1295 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1296 if (now < nextTimeout 1297 && mDisplayPowerRequest.wantScreenOnNormal()) { 1298 mUserActivitySummary = mDisplayPowerRequest.screenState 1299 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1300 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1301 } 1302 } 1303 if (mUserActivitySummary != 0) { 1304 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1305 msg.setAsynchronous(true); 1306 mHandler.sendMessageAtTime(msg, nextTimeout); 1307 } 1308 } else { 1309 mUserActivitySummary = 0; 1310 } 1311 1312 if (DEBUG_SPEW) { 1313 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1314 + wakefulnessToString(mWakefulness) 1315 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1316 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1317 } 1318 } 1319 } 1320 1321 /** 1322 * Called when a user activity timeout has occurred. 1323 * Simply indicates that something about user activity has changed so that the new 1324 * state can be recomputed when the power state is updated. 1325 * 1326 * This function must have no other side-effects besides setting the dirty 1327 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1328 */ 1329 private void handleUserActivityTimeout() { // runs on handler thread 1330 synchronized (mLock) { 1331 if (DEBUG_SPEW) { 1332 Slog.d(TAG, "handleUserActivityTimeout"); 1333 } 1334 1335 mDirty |= DIRTY_USER_ACTIVITY; 1336 updatePowerStateLocked(); 1337 } 1338 } 1339 1340 private int getScreenOffTimeoutLocked() { 1341 int timeout = mScreenOffTimeoutSetting; 1342 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1343 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1344 } 1345 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1346 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1347 } 1348 return Math.max(timeout, MINIMUM_SCREEN_OFF_TIMEOUT); 1349 } 1350 1351 private int getScreenDimDurationLocked(int screenOffTimeout) { 1352 return Math.min(SCREEN_DIM_DURATION, 1353 (int)(screenOffTimeout * MAXIMUM_SCREEN_DIM_RATIO)); 1354 } 1355 1356 /** 1357 * Updates the wakefulness of the device. 1358 * 1359 * This is the function that decides whether the device should start dreaming 1360 * based on the current wake locks and user activity state. It may modify mDirty 1361 * if the wakefulness changes. 1362 * 1363 * Returns true if the wakefulness changed and we need to restart power state calculation. 1364 */ 1365 private boolean updateWakefulnessLocked(int dirty) { 1366 boolean changed = false; 1367 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1368 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1369 | DIRTY_DOCK_STATE)) != 0) { 1370 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1371 if (DEBUG_SPEW) { 1372 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1373 } 1374 final long time = SystemClock.uptimeMillis(); 1375 if (shouldNapAtBedTimeLocked()) { 1376 changed = napNoUpdateLocked(time); 1377 } else { 1378 changed = goToSleepNoUpdateLocked(time, 1379 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1380 } 1381 } 1382 } 1383 return changed; 1384 } 1385 1386 /** 1387 * Returns true if the device should automatically nap and start dreaming when the user 1388 * activity timeout has expired and it's bedtime. 1389 */ 1390 private boolean shouldNapAtBedTimeLocked() { 1391 return mDreamsActivateOnSleepSetting 1392 || (mDreamsActivateOnDockSetting 1393 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1394 } 1395 1396 /** 1397 * Returns true if the device should go to sleep now. 1398 * Also used when exiting a dream to determine whether we should go back 1399 * to being fully awake or else go to sleep for good. 1400 */ 1401 private boolean isItBedTimeYetLocked() { 1402 return mBootCompleted && !isBeingKeptAwakeLocked(); 1403 } 1404 1405 /** 1406 * Returns true if the device is being kept awake by a wake lock, user activity 1407 * or the stay on while powered setting. We also keep the phone awake when 1408 * the proximity sensor returns a positive result so that the device does not 1409 * lock while in a phone call. This function only controls whether the device 1410 * will go to sleep or dream which is independent of whether it will be allowed 1411 * to suspend. 1412 */ 1413 private boolean isBeingKeptAwakeLocked() { 1414 return mStayOn 1415 || mProximityPositive 1416 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1417 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1418 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1419 } 1420 1421 /** 1422 * Determines whether to post a message to the sandman to update the dream state. 1423 */ 1424 private void updateDreamLocked(int dirty) { 1425 if ((dirty & (DIRTY_WAKEFULNESS 1426 | DIRTY_USER_ACTIVITY 1427 | DIRTY_WAKE_LOCKS 1428 | DIRTY_BOOT_COMPLETED 1429 | DIRTY_SETTINGS 1430 | DIRTY_IS_POWERED 1431 | DIRTY_STAY_ON 1432 | DIRTY_PROXIMITY_POSITIVE 1433 | DIRTY_BATTERY_STATE)) != 0) { 1434 scheduleSandmanLocked(); 1435 } 1436 } 1437 1438 private void scheduleSandmanLocked() { 1439 if (!mSandmanScheduled) { 1440 mSandmanScheduled = true; 1441 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1442 msg.setAsynchronous(true); 1443 mHandler.sendMessage(msg); 1444 } 1445 } 1446 1447 /** 1448 * Called when the device enters or exits a dreaming or dozing state. 1449 * 1450 * We do this asynchronously because we must call out of the power manager to start 1451 * the dream and we don't want to hold our lock while doing so. There is a risk that 1452 * the device will wake or go to sleep in the meantime so we have to handle that case. 1453 */ 1454 private void handleSandman() { // runs on handler thread 1455 // Handle preconditions. 1456 final boolean startDreaming; 1457 final int wakefulness; 1458 synchronized (mLock) { 1459 mSandmanScheduled = false; 1460 wakefulness = mWakefulness; 1461 if (mSandmanSummoned) { 1462 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1463 || wakefulness == WAKEFULNESS_DOZING); 1464 mSandmanSummoned = false; 1465 } else { 1466 startDreaming = false; 1467 } 1468 } 1469 1470 // Start dreaming if needed. 1471 // We only control the dream on the handler thread, so we don't need to worry about 1472 // concurrent attempts to start or stop the dream. 1473 final boolean isDreaming; 1474 if (mDreamManager != null) { 1475 // Restart the dream whenever the sandman is summoned. 1476 if (startDreaming) { 1477 mDreamManager.stopDream(); 1478 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1479 } 1480 isDreaming = mDreamManager.isDreaming(); 1481 } else { 1482 isDreaming = false; 1483 } 1484 1485 // Update dream state. 1486 synchronized (mLock) { 1487 // Remember the initial battery level when the dream started. 1488 if (startDreaming && isDreaming) { 1489 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1490 if (wakefulness == WAKEFULNESS_DOZING) { 1491 Slog.i(TAG, "Dozing..."); 1492 } else { 1493 Slog.i(TAG, "Dreaming..."); 1494 } 1495 } 1496 1497 // If preconditions changed, wait for the next iteration to determine 1498 // whether the dream should continue (or be restarted). 1499 if (mSandmanSummoned || mWakefulness != wakefulness) { 1500 return; // wait for next cycle 1501 } 1502 1503 // Determine whether the dream should continue. 1504 if (wakefulness == WAKEFULNESS_DREAMING) { 1505 if (isDreaming && canDreamLocked()) { 1506 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1507 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1508 - mDreamsBatteryLevelDrainCutoffConfig 1509 && !isBeingKeptAwakeLocked()) { 1510 // If the user activity timeout expired and the battery appears 1511 // to be draining faster than it is charging then stop dreaming 1512 // and go to sleep. 1513 Slog.i(TAG, "Stopping dream because the battery appears to " 1514 + "be draining faster than it is charging. " 1515 + "Battery level when dream started: " 1516 + mBatteryLevelWhenDreamStarted + "%. " 1517 + "Battery level now: " + mBatteryLevel + "%."); 1518 } else { 1519 return; // continue dreaming 1520 } 1521 } 1522 1523 // Dream has ended or will be stopped. Update the power state. 1524 if (isItBedTimeYetLocked()) { 1525 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1526 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1527 updatePowerStateLocked(); 1528 } else { 1529 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1530 updatePowerStateLocked(); 1531 } 1532 } else if (wakefulness == WAKEFULNESS_DOZING) { 1533 if (isDreaming) { 1534 return; // continue dozing 1535 } 1536 1537 // Doze has ended or will be stopped. Update the power state. 1538 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1539 updatePowerStateLocked(); 1540 } 1541 } 1542 1543 // Stop dream. 1544 if (isDreaming) { 1545 mDreamManager.stopDream(); 1546 } 1547 } 1548 1549 /** 1550 * Returns true if the device is allowed to dream in its current state. 1551 * This function is not called when dozing. 1552 */ 1553 private boolean canDreamLocked() { 1554 if (mWakefulness != WAKEFULNESS_DREAMING 1555 || !mDreamsSupportedConfig 1556 || !mDreamsEnabledSetting 1557 || !mDisplayPowerRequest.wantScreenOnNormal() 1558 || !mBootCompleted) { 1559 return false; 1560 } 1561 if (!isBeingKeptAwakeLocked()) { 1562 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1563 return false; 1564 } 1565 if (!mIsPowered 1566 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1567 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1568 return false; 1569 } 1570 if (mIsPowered 1571 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1572 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1573 return false; 1574 } 1575 } 1576 return true; 1577 } 1578 1579 private void handleScreenOnBlockerReleased() { 1580 synchronized (mLock) { 1581 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1582 updatePowerStateLocked(); 1583 } 1584 } 1585 1586 /** 1587 * Updates the display power state asynchronously. 1588 * When the update is finished, mDisplayReady will be set to true. The display 1589 * controller posts a message to tell us when the actual display power state 1590 * has been updated so we come back here to double-check and finish up. 1591 * 1592 * This function recalculates the display power state each time. 1593 */ 1594 private void updateDisplayPowerStateLocked(int dirty) { 1595 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1596 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1597 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1598 final int newScreenState = getDesiredScreenPowerStateLocked(); 1599 mDisplayPowerRequest.screenState = newScreenState; 1600 1601 int screenBrightness = mScreenBrightnessSettingDefault; 1602 float screenAutoBrightnessAdjustment = 0.0f; 1603 boolean autoBrightness = (mScreenBrightnessModeSetting == 1604 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1605 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1606 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1607 autoBrightness = false; 1608 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1609 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1610 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1611 screenBrightness = mScreenBrightnessSetting; 1612 } 1613 if (autoBrightness) { 1614 screenBrightness = mScreenBrightnessSettingDefault; 1615 if (isValidAutoBrightnessAdjustment( 1616 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1617 screenAutoBrightnessAdjustment = 1618 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1619 } else if (isValidAutoBrightnessAdjustment( 1620 mScreenAutoBrightnessAdjustmentSetting)) { 1621 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1622 } 1623 } 1624 screenBrightness = Math.max(Math.min(screenBrightness, 1625 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1626 screenAutoBrightnessAdjustment = Math.max(Math.min( 1627 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1628 mDisplayPowerRequest.screenBrightness = screenBrightness; 1629 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1630 screenAutoBrightnessAdjustment; 1631 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1632 1633 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1634 1635 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1636 1637 mDisplayPowerRequest.lowPowerMode = mLowPowerModeEnabled; 1638 1639 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1640 mRequestWaitForNegativeProximity); 1641 mRequestWaitForNegativeProximity = false; 1642 1643 if (DEBUG_SPEW) { 1644 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1645 + ", newScreenState=" + newScreenState 1646 + ", mWakefulness=" + mWakefulness 1647 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1648 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1649 + ", mBootCompleted=" + mBootCompleted); 1650 } 1651 } 1652 } 1653 1654 private static boolean isValidBrightness(int value) { 1655 return value >= 0 && value <= 255; 1656 } 1657 1658 private static boolean isValidAutoBrightnessAdjustment(float value) { 1659 // Handles NaN by always returning false. 1660 return value >= -1.0f && value <= 1.0f; 1661 } 1662 1663 private int getDesiredScreenPowerStateLocked() { 1664 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1665 return DisplayPowerRequest.SCREEN_STATE_OFF; 1666 } 1667 1668 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1669 return DisplayPowerRequest.SCREEN_STATE_DOZE; 1670 } 1671 1672 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1673 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1674 || !mBootCompleted) { 1675 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1676 } 1677 1678 return DisplayPowerRequest.SCREEN_STATE_DIM; 1679 } 1680 1681 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1682 new DisplayManagerInternal.DisplayPowerCallbacks() { 1683 private int mDisplayState = Display.STATE_UNKNOWN; 1684 1685 @Override 1686 public void onStateChanged() { 1687 synchronized (mLock) { 1688 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1689 updatePowerStateLocked(); 1690 } 1691 } 1692 1693 @Override 1694 public void onProximityPositive() { 1695 synchronized (mLock) { 1696 mProximityPositive = true; 1697 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1698 updatePowerStateLocked(); 1699 } 1700 } 1701 1702 @Override 1703 public void onProximityNegative() { 1704 synchronized (mLock) { 1705 mProximityPositive = false; 1706 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1707 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1708 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1709 updatePowerStateLocked(); 1710 } 1711 } 1712 1713 @Override 1714 public void onDisplayStateChange(int state) { 1715 // This method is only needed to support legacy display blanking behavior 1716 // where the display's power state is coupled to suspend or to the power HAL. 1717 // The order of operations matters here. 1718 synchronized (mLock) { 1719 if (mDisplayState != state) { 1720 mDisplayState = state; 1721 if (state == Display.STATE_OFF) { 1722 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1723 setHalInteractiveModeLocked(false); 1724 } 1725 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1726 setHalAutoSuspendModeLocked(true); 1727 } 1728 } else { 1729 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1730 setHalAutoSuspendModeLocked(false); 1731 } 1732 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1733 setHalInteractiveModeLocked(true); 1734 } 1735 } 1736 } 1737 } 1738 } 1739 1740 @Override 1741 public void acquireSuspendBlocker() { 1742 mDisplaySuspendBlocker.acquire(); 1743 } 1744 1745 @Override 1746 public void releaseSuspendBlocker() { 1747 mDisplaySuspendBlocker.release(); 1748 } 1749 1750 @Override 1751 public String toString() { 1752 synchronized (this) { 1753 return "state=" + Display.stateToString(mDisplayState); 1754 } 1755 } 1756 }; 1757 1758 private boolean shouldUseProximitySensorLocked() { 1759 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1760 } 1761 1762 /** 1763 * Updates the suspend blocker that keeps the CPU alive. 1764 * 1765 * This function must have no other side-effects. 1766 */ 1767 private void updateSuspendBlockerLocked() { 1768 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1769 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1770 final boolean autoSuspend = !needDisplaySuspendBlocker; 1771 1772 // Disable auto-suspend if needed. 1773 if (!autoSuspend) { 1774 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1775 setHalAutoSuspendModeLocked(false); 1776 } 1777 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1778 setHalInteractiveModeLocked(true); 1779 } 1780 } 1781 1782 // First acquire suspend blockers if needed. 1783 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1784 mWakeLockSuspendBlocker.acquire(); 1785 mHoldingWakeLockSuspendBlocker = true; 1786 } 1787 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1788 mDisplaySuspendBlocker.acquire(); 1789 mHoldingDisplaySuspendBlocker = true; 1790 } 1791 1792 // Then release suspend blockers if needed. 1793 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1794 mWakeLockSuspendBlocker.release(); 1795 mHoldingWakeLockSuspendBlocker = false; 1796 } 1797 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1798 mDisplaySuspendBlocker.release(); 1799 mHoldingDisplaySuspendBlocker = false; 1800 } 1801 1802 // Enable auto-suspend if needed. 1803 if (autoSuspend) { 1804 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1805 setHalInteractiveModeLocked(false); 1806 } 1807 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1808 setHalAutoSuspendModeLocked(true); 1809 } 1810 } 1811 } 1812 1813 /** 1814 * Return true if we must keep a suspend blocker active on behalf of the display. 1815 * We do so if the screen is on or is in transition between states. 1816 */ 1817 private boolean needDisplaySuspendBlockerLocked() { 1818 if (!mDisplayReady) { 1819 return true; 1820 } 1821 if (mDisplayPowerRequest.wantScreenOnNormal()) { 1822 // If we asked for the screen to be on but it is off due to the proximity 1823 // sensor then we may suspend but only if the configuration allows it. 1824 // On some hardware it may not be safe to suspend because the proximity 1825 // sensor may not be correctly configured as a wake-up source. 1826 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1827 || !mSuspendWhenScreenOffDueToProximityConfig) { 1828 return true; 1829 } 1830 } 1831 // Let the system suspend if the screen is off or dozing. 1832 return false; 1833 } 1834 1835 private void setHalAutoSuspendModeLocked(boolean enable) { 1836 if (enable != mHalAutoSuspendModeEnabled) { 1837 if (DEBUG) { 1838 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 1839 } 1840 mHalAutoSuspendModeEnabled = enable; 1841 nativeSetAutoSuspend(enable); 1842 } 1843 } 1844 1845 private void setHalInteractiveModeLocked(boolean enable) { 1846 if (enable != mHalInteractiveModeEnabled) { 1847 if (DEBUG) { 1848 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 1849 } 1850 mHalInteractiveModeEnabled = enable; 1851 nativeSetInteractive(enable); 1852 } 1853 } 1854 1855 private boolean isInteractiveInternal() { 1856 synchronized (mLock) { 1857 return mInteractive; 1858 } 1859 } 1860 1861 private void handleBatteryStateChangedLocked() { 1862 mDirty |= DIRTY_BATTERY_STATE; 1863 updatePowerStateLocked(); 1864 } 1865 1866 private void startWatchingForBootAnimationFinished() { 1867 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1868 } 1869 1870 private void checkIfBootAnimationFinished() { 1871 if (DEBUG) { 1872 Slog.d(TAG, "Check if boot animation finished..."); 1873 } 1874 1875 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1876 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1877 BOOT_ANIMATION_POLL_INTERVAL); 1878 return; 1879 } 1880 1881 synchronized (mLock) { 1882 if (!mBootCompleted) { 1883 Slog.i(TAG, "Boot animation finished."); 1884 handleBootCompletedLocked(); 1885 } 1886 } 1887 } 1888 1889 private void handleBootCompletedLocked() { 1890 final long now = SystemClock.uptimeMillis(); 1891 mBootCompleted = true; 1892 mDirty |= DIRTY_BOOT_COMPLETED; 1893 userActivityNoUpdateLocked( 1894 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1895 updatePowerStateLocked(); 1896 } 1897 1898 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1899 final String reason, boolean wait) { 1900 if (mHandler == null || !mSystemReady) { 1901 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1902 } 1903 1904 Runnable runnable = new Runnable() { 1905 @Override 1906 public void run() { 1907 synchronized (this) { 1908 if (shutdown) { 1909 ShutdownThread.shutdown(mContext, confirm); 1910 } else { 1911 ShutdownThread.reboot(mContext, reason, confirm); 1912 } 1913 } 1914 } 1915 }; 1916 1917 // ShutdownThread must run on a looper capable of displaying the UI. 1918 Message msg = Message.obtain(mHandler, runnable); 1919 msg.setAsynchronous(true); 1920 mHandler.sendMessage(msg); 1921 1922 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 1923 if (wait) { 1924 synchronized (runnable) { 1925 while (true) { 1926 try { 1927 runnable.wait(); 1928 } catch (InterruptedException e) { 1929 } 1930 } 1931 } 1932 } 1933 } 1934 1935 private void crashInternal(final String message) { 1936 Thread t = new Thread("PowerManagerService.crash()") { 1937 @Override 1938 public void run() { 1939 throw new RuntimeException(message); 1940 } 1941 }; 1942 try { 1943 t.start(); 1944 t.join(); 1945 } catch (InterruptedException e) { 1946 Log.wtf(TAG, e); 1947 } 1948 } 1949 1950 private void setStayOnSettingInternal(int val) { 1951 Settings.Global.putInt(mContext.getContentResolver(), 1952 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 1953 } 1954 1955 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 1956 synchronized (mLock) { 1957 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 1958 mDirty |= DIRTY_SETTINGS; 1959 updatePowerStateLocked(); 1960 } 1961 } 1962 1963 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 1964 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 1965 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 1966 } 1967 1968 private void setAttentionLightInternal(boolean on, int color) { 1969 Light light; 1970 synchronized (mLock) { 1971 if (!mSystemReady) { 1972 return; 1973 } 1974 light = mAttentionLight; 1975 } 1976 1977 // Control light outside of lock. 1978 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 1979 } 1980 1981 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 1982 synchronized (mLock) { 1983 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 1984 mScreenBrightnessOverrideFromWindowManager = brightness; 1985 mDirty |= DIRTY_SETTINGS; 1986 updatePowerStateLocked(); 1987 } 1988 } 1989 } 1990 1991 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 1992 synchronized (mLock) { 1993 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 1994 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 1995 mDirty |= DIRTY_SETTINGS; 1996 updatePowerStateLocked(); 1997 } 1998 } 1999 } 2000 2001 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2002 synchronized (mLock) { 2003 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2004 mTemporaryScreenBrightnessSettingOverride = brightness; 2005 mDirty |= DIRTY_SETTINGS; 2006 updatePowerStateLocked(); 2007 } 2008 } 2009 } 2010 2011 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2012 synchronized (mLock) { 2013 // Note: This condition handles NaN because NaN is not equal to any other 2014 // value, including itself. 2015 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2016 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2017 mDirty |= DIRTY_SETTINGS; 2018 updatePowerStateLocked(); 2019 } 2020 } 2021 } 2022 2023 /** 2024 * Low-level function turn the device off immediately, without trying 2025 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2026 */ 2027 public static void lowLevelShutdown() { 2028 SystemProperties.set("sys.powerctl", "shutdown"); 2029 } 2030 2031 /** 2032 * Low-level function to reboot the device. On success, this 2033 * function doesn't return. If more than 20 seconds passes from 2034 * the time a reboot is requested (120 seconds for reboot to 2035 * recovery), this method returns. 2036 * 2037 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2038 */ 2039 public static void lowLevelReboot(String reason) { 2040 if (reason == null) { 2041 reason = ""; 2042 } 2043 long duration; 2044 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2045 // If we are rebooting to go into recovery, instead of 2046 // setting sys.powerctl directly we'll start the 2047 // pre-recovery service which will do some preparation for 2048 // recovery and then reboot for us. 2049 // 2050 // This preparation can take more than 20 seconds if 2051 // there's a very large update package, so lengthen the 2052 // timeout. 2053 SystemProperties.set("ctl.start", "pre-recovery"); 2054 duration = 120 * 1000L; 2055 } else { 2056 SystemProperties.set("sys.powerctl", "reboot," + reason); 2057 duration = 20 * 1000L; 2058 } 2059 try { 2060 Thread.sleep(duration); 2061 } catch (InterruptedException e) { 2062 Thread.currentThread().interrupt(); 2063 } 2064 } 2065 2066 @Override // Watchdog.Monitor implementation 2067 public void monitor() { 2068 // Grab and release lock for watchdog monitor to detect deadlocks. 2069 synchronized (mLock) { 2070 } 2071 } 2072 2073 private void dumpInternal(PrintWriter pw) { 2074 pw.println("POWER MANAGER (dumpsys power)\n"); 2075 2076 final WirelessChargerDetector wcd; 2077 synchronized (mLock) { 2078 pw.println("Power Manager State:"); 2079 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2080 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2081 pw.println(" mInteractive=" + mInteractive); 2082 pw.println(" mIsPowered=" + mIsPowered); 2083 pw.println(" mPlugType=" + mPlugType); 2084 pw.println(" mBatteryLevel=" + mBatteryLevel); 2085 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2086 pw.println(" mDockState=" + mDockState); 2087 pw.println(" mStayOn=" + mStayOn); 2088 pw.println(" mProximityPositive=" + mProximityPositive); 2089 pw.println(" mBootCompleted=" + mBootCompleted); 2090 pw.println(" mSystemReady=" + mSystemReady); 2091 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2092 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2093 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2094 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2095 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2096 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2097 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2098 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2099 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2100 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2101 pw.println(" mLastUserActivityTimeNoChangeLights=" 2102 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2103 pw.println(" mDisplayReady=" + mDisplayReady); 2104 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2105 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2106 2107 pw.println(); 2108 pw.println("Settings and Configuration:"); 2109 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2110 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2111 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2112 + mDecoupleHalInteractiveModeFromDisplayConfig); 2113 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2114 + mWakeUpWhenPluggedOrUnpluggedConfig); 2115 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2116 + mSuspendWhenScreenOffDueToProximityConfig); 2117 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2118 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2119 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2120 + mDreamsActivatedOnSleepByDefaultConfig); 2121 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2122 + mDreamsActivatedOnDockByDefaultConfig); 2123 pw.println(" mDreamsEnabledOnBatteryConfig=" 2124 + mDreamsEnabledOnBatteryConfig); 2125 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2126 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2127 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2128 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2129 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2130 + mDreamsBatteryLevelDrainCutoffConfig); 2131 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2132 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2133 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2134 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2135 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2136 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2137 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2138 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2139 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2140 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2141 + mScreenAutoBrightnessAdjustmentSetting); 2142 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2143 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2144 + mScreenBrightnessOverrideFromWindowManager); 2145 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2146 + mUserActivityTimeoutOverrideFromWindowManager); 2147 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2148 + mTemporaryScreenBrightnessSettingOverride); 2149 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2150 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2151 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2152 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2153 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2154 2155 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2156 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2157 pw.println(); 2158 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2159 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2160 2161 pw.println(); 2162 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2163 for (WakeLock wl : mWakeLocks) { 2164 pw.println(" " + wl); 2165 } 2166 2167 pw.println(); 2168 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2169 for (SuspendBlocker sb : mSuspendBlockers) { 2170 pw.println(" " + sb); 2171 } 2172 2173 pw.println(); 2174 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2175 2176 pw.println(); 2177 pw.println("Display Power: " + mDisplayPowerCallbacks); 2178 2179 wcd = mWirelessChargerDetector; 2180 } 2181 2182 if (wcd != null) { 2183 wcd.dump(pw); 2184 } 2185 } 2186 2187 private SuspendBlocker createSuspendBlockerLocked(String name) { 2188 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2189 mSuspendBlockers.add(suspendBlocker); 2190 return suspendBlocker; 2191 } 2192 2193 private static String wakefulnessToString(int wakefulness) { 2194 switch (wakefulness) { 2195 case WAKEFULNESS_ASLEEP: 2196 return "Asleep"; 2197 case WAKEFULNESS_AWAKE: 2198 return "Awake"; 2199 case WAKEFULNESS_DREAMING: 2200 return "Dreaming"; 2201 case WAKEFULNESS_DOZING: 2202 return "Dozing"; 2203 default: 2204 return Integer.toString(wakefulness); 2205 } 2206 } 2207 2208 private static WorkSource copyWorkSource(WorkSource workSource) { 2209 return workSource != null ? new WorkSource(workSource) : null; 2210 } 2211 2212 private final class BatteryReceiver extends BroadcastReceiver { 2213 @Override 2214 public void onReceive(Context context, Intent intent) { 2215 synchronized (mLock) { 2216 handleBatteryStateChangedLocked(); 2217 } 2218 } 2219 } 2220 2221 private final class BootCompletedReceiver extends BroadcastReceiver { 2222 @Override 2223 public void onReceive(Context context, Intent intent) { 2224 // This is our early signal that the system thinks it has finished booting. 2225 // However, the boot animation may still be running for a few more seconds 2226 // since it is ultimately in charge of when it terminates. 2227 // Defer transitioning into the boot completed state until the animation exits. 2228 // We do this so that the screen does not start to dim prematurely before 2229 // the user has actually had a chance to interact with the device. 2230 startWatchingForBootAnimationFinished(); 2231 } 2232 } 2233 2234 private final class DreamReceiver extends BroadcastReceiver { 2235 @Override 2236 public void onReceive(Context context, Intent intent) { 2237 synchronized (mLock) { 2238 scheduleSandmanLocked(); 2239 } 2240 } 2241 } 2242 2243 private final class UserSwitchedReceiver extends BroadcastReceiver { 2244 @Override 2245 public void onReceive(Context context, Intent intent) { 2246 synchronized (mLock) { 2247 handleSettingsChangedLocked(); 2248 } 2249 } 2250 } 2251 2252 private final class DockReceiver extends BroadcastReceiver { 2253 @Override 2254 public void onReceive(Context context, Intent intent) { 2255 synchronized (mLock) { 2256 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2257 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2258 if (mDockState != dockState) { 2259 mDockState = dockState; 2260 mDirty |= DIRTY_DOCK_STATE; 2261 updatePowerStateLocked(); 2262 } 2263 } 2264 } 2265 } 2266 2267 private final class SettingsObserver extends ContentObserver { 2268 public SettingsObserver(Handler handler) { 2269 super(handler); 2270 } 2271 2272 @Override 2273 public void onChange(boolean selfChange, Uri uri) { 2274 synchronized (mLock) { 2275 handleSettingsChangedLocked(); 2276 } 2277 } 2278 } 2279 2280 /** 2281 * Handler for asynchronous operations performed by the power manager. 2282 */ 2283 private final class PowerManagerHandler extends Handler { 2284 public PowerManagerHandler(Looper looper) { 2285 super(looper, null, true /*async*/); 2286 } 2287 2288 @Override 2289 public void handleMessage(Message msg) { 2290 switch (msg.what) { 2291 case MSG_USER_ACTIVITY_TIMEOUT: 2292 handleUserActivityTimeout(); 2293 break; 2294 case MSG_SANDMAN: 2295 handleSandman(); 2296 break; 2297 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2298 handleScreenOnBlockerReleased(); 2299 break; 2300 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2301 checkIfBootAnimationFinished(); 2302 break; 2303 } 2304 } 2305 } 2306 2307 /** 2308 * Represents a wake lock that has been acquired by an application. 2309 */ 2310 private final class WakeLock implements IBinder.DeathRecipient { 2311 public final IBinder mLock; 2312 public int mFlags; 2313 public String mTag; 2314 public final String mPackageName; 2315 public WorkSource mWorkSource; 2316 public String mHistoryTag; 2317 public final int mOwnerUid; 2318 public final int mOwnerPid; 2319 public boolean mNotifiedAcquired; 2320 2321 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2322 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2323 mLock = lock; 2324 mFlags = flags; 2325 mTag = tag; 2326 mPackageName = packageName; 2327 mWorkSource = copyWorkSource(workSource); 2328 mHistoryTag = historyTag; 2329 mOwnerUid = ownerUid; 2330 mOwnerPid = ownerPid; 2331 } 2332 2333 @Override 2334 public void binderDied() { 2335 PowerManagerService.this.handleWakeLockDeath(this); 2336 } 2337 2338 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2339 int ownerUid, int ownerPid) { 2340 return mFlags == flags 2341 && mTag.equals(tag) 2342 && hasSameWorkSource(workSource) 2343 && mOwnerUid == ownerUid 2344 && mOwnerPid == ownerPid; 2345 } 2346 2347 public void updateProperties(int flags, String tag, String packageName, 2348 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2349 if (!mPackageName.equals(packageName)) { 2350 throw new IllegalStateException("Existing wake lock package name changed: " 2351 + mPackageName + " to " + packageName); 2352 } 2353 if (mOwnerUid != ownerUid) { 2354 throw new IllegalStateException("Existing wake lock uid changed: " 2355 + mOwnerUid + " to " + ownerUid); 2356 } 2357 if (mOwnerPid != ownerPid) { 2358 throw new IllegalStateException("Existing wake lock pid changed: " 2359 + mOwnerPid + " to " + ownerPid); 2360 } 2361 mFlags = flags; 2362 mTag = tag; 2363 updateWorkSource(workSource); 2364 mHistoryTag = historyTag; 2365 } 2366 2367 public boolean hasSameWorkSource(WorkSource workSource) { 2368 return Objects.equal(mWorkSource, workSource); 2369 } 2370 2371 public void updateWorkSource(WorkSource workSource) { 2372 mWorkSource = copyWorkSource(workSource); 2373 } 2374 2375 @Override 2376 public String toString() { 2377 return getLockLevelString() 2378 + " '" + mTag + "'" + getLockFlagsString() 2379 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2380 } 2381 2382 @SuppressWarnings("deprecation") 2383 private String getLockLevelString() { 2384 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2385 case PowerManager.FULL_WAKE_LOCK: 2386 return "FULL_WAKE_LOCK "; 2387 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2388 return "SCREEN_BRIGHT_WAKE_LOCK "; 2389 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2390 return "SCREEN_DIM_WAKE_LOCK "; 2391 case PowerManager.PARTIAL_WAKE_LOCK: 2392 return "PARTIAL_WAKE_LOCK "; 2393 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2394 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2395 case PowerManager.DOZE_WAKE_LOCK: 2396 return "DOZE_WAKE_LOCK "; 2397 default: 2398 return "??? "; 2399 } 2400 } 2401 2402 private String getLockFlagsString() { 2403 String result = ""; 2404 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2405 result += " ACQUIRE_CAUSES_WAKEUP"; 2406 } 2407 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2408 result += " ON_AFTER_RELEASE"; 2409 } 2410 return result; 2411 } 2412 } 2413 2414 private final class SuspendBlockerImpl implements SuspendBlocker { 2415 private final String mName; 2416 private int mReferenceCount; 2417 2418 public SuspendBlockerImpl(String name) { 2419 mName = name; 2420 } 2421 2422 @Override 2423 protected void finalize() throws Throwable { 2424 try { 2425 if (mReferenceCount != 0) { 2426 Log.wtf(TAG, "Suspend blocker \"" + mName 2427 + "\" was finalized without being released!"); 2428 mReferenceCount = 0; 2429 nativeReleaseSuspendBlocker(mName); 2430 } 2431 } finally { 2432 super.finalize(); 2433 } 2434 } 2435 2436 @Override 2437 public void acquire() { 2438 synchronized (this) { 2439 mReferenceCount += 1; 2440 if (mReferenceCount == 1) { 2441 if (DEBUG_SPEW) { 2442 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2443 } 2444 nativeAcquireSuspendBlocker(mName); 2445 } 2446 } 2447 } 2448 2449 @Override 2450 public void release() { 2451 synchronized (this) { 2452 mReferenceCount -= 1; 2453 if (mReferenceCount == 0) { 2454 if (DEBUG_SPEW) { 2455 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2456 } 2457 nativeReleaseSuspendBlocker(mName); 2458 } else if (mReferenceCount < 0) { 2459 Log.wtf(TAG, "Suspend blocker \"" + mName 2460 + "\" was released without being acquired!", new Throwable()); 2461 mReferenceCount = 0; 2462 } 2463 } 2464 } 2465 2466 @Override 2467 public String toString() { 2468 synchronized (this) { 2469 return mName + ": ref count=" + mReferenceCount; 2470 } 2471 } 2472 } 2473 2474 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2475 private int mNestCount; 2476 2477 public boolean isHeld() { 2478 synchronized (this) { 2479 return mNestCount != 0; 2480 } 2481 } 2482 2483 @Override 2484 public void acquire() { 2485 synchronized (this) { 2486 mNestCount += 1; 2487 if (DEBUG) { 2488 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2489 } 2490 } 2491 } 2492 2493 @Override 2494 public void release() { 2495 synchronized (this) { 2496 mNestCount -= 1; 2497 if (mNestCount < 0) { 2498 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2499 new Throwable()); 2500 mNestCount = 0; 2501 } 2502 if (mNestCount == 0) { 2503 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2504 } 2505 if (DEBUG) { 2506 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2507 } 2508 } 2509 } 2510 2511 @Override 2512 public String toString() { 2513 synchronized (this) { 2514 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2515 } 2516 } 2517 } 2518 2519 private final class BinderService extends IPowerManager.Stub { 2520 @Override // Binder call 2521 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2522 String packageName, int uid) { 2523 if (uid < 0) { 2524 uid = Binder.getCallingUid(); 2525 } 2526 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2527 } 2528 2529 @Override // Binder call 2530 public void powerHint(int hintId, int data) { 2531 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2532 nativeSendPowerHint(hintId, data); 2533 } 2534 2535 @Override // Binder call 2536 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2537 WorkSource ws, String historyTag) { 2538 if (lock == null) { 2539 throw new IllegalArgumentException("lock must not be null"); 2540 } 2541 if (packageName == null) { 2542 throw new IllegalArgumentException("packageName must not be null"); 2543 } 2544 PowerManager.validateWakeLockParameters(flags, tag); 2545 2546 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2547 if (ws != null && ws.size() != 0) { 2548 mContext.enforceCallingOrSelfPermission( 2549 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2550 } else { 2551 ws = null; 2552 } 2553 2554 final int uid = Binder.getCallingUid(); 2555 final int pid = Binder.getCallingPid(); 2556 final long ident = Binder.clearCallingIdentity(); 2557 try { 2558 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2559 } finally { 2560 Binder.restoreCallingIdentity(ident); 2561 } 2562 } 2563 2564 @Override // Binder call 2565 public void releaseWakeLock(IBinder lock, int flags) { 2566 if (lock == null) { 2567 throw new IllegalArgumentException("lock must not be null"); 2568 } 2569 2570 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2571 2572 final long ident = Binder.clearCallingIdentity(); 2573 try { 2574 releaseWakeLockInternal(lock, flags); 2575 } finally { 2576 Binder.restoreCallingIdentity(ident); 2577 } 2578 } 2579 2580 @Override // Binder call 2581 public void updateWakeLockUids(IBinder lock, int[] uids) { 2582 WorkSource ws = null; 2583 2584 if (uids != null) { 2585 ws = new WorkSource(); 2586 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2587 // one at a time? 2588 for (int i = 0; i < uids.length; i++) { 2589 ws.add(uids[i]); 2590 } 2591 } 2592 updateWakeLockWorkSource(lock, ws, null); 2593 } 2594 2595 @Override // Binder call 2596 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2597 if (lock == null) { 2598 throw new IllegalArgumentException("lock must not be null"); 2599 } 2600 2601 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2602 if (ws != null && ws.size() != 0) { 2603 mContext.enforceCallingOrSelfPermission( 2604 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2605 } else { 2606 ws = null; 2607 } 2608 2609 final long ident = Binder.clearCallingIdentity(); 2610 try { 2611 updateWakeLockWorkSourceInternal(lock, ws, historyTag); 2612 } finally { 2613 Binder.restoreCallingIdentity(ident); 2614 } 2615 } 2616 2617 @Override // Binder call 2618 public boolean isWakeLockLevelSupported(int level) { 2619 final long ident = Binder.clearCallingIdentity(); 2620 try { 2621 return isWakeLockLevelSupportedInternal(level); 2622 } finally { 2623 Binder.restoreCallingIdentity(ident); 2624 } 2625 } 2626 2627 @Override // Binder call 2628 public void userActivity(long eventTime, int event, int flags) { 2629 final long now = SystemClock.uptimeMillis(); 2630 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2631 != PackageManager.PERMISSION_GRANTED) { 2632 // Once upon a time applications could call userActivity(). 2633 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2634 // request instead of throwing a SecurityException so we don't break old apps. 2635 synchronized (mLock) { 2636 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2637 mLastWarningAboutUserActivityPermission = now; 2638 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2639 + "caller does not have DEVICE_POWER permission. " 2640 + "Please fix your app! " 2641 + " pid=" + Binder.getCallingPid() 2642 + " uid=" + Binder.getCallingUid()); 2643 } 2644 } 2645 return; 2646 } 2647 2648 if (eventTime > SystemClock.uptimeMillis()) { 2649 throw new IllegalArgumentException("event time must not be in the future"); 2650 } 2651 2652 final int uid = Binder.getCallingUid(); 2653 final long ident = Binder.clearCallingIdentity(); 2654 try { 2655 userActivityInternal(eventTime, event, flags, uid); 2656 } finally { 2657 Binder.restoreCallingIdentity(ident); 2658 } 2659 } 2660 2661 @Override // Binder call 2662 public void wakeUp(long eventTime) { 2663 if (eventTime > SystemClock.uptimeMillis()) { 2664 throw new IllegalArgumentException("event time must not be in the future"); 2665 } 2666 2667 mContext.enforceCallingOrSelfPermission( 2668 android.Manifest.permission.DEVICE_POWER, null); 2669 2670 final long ident = Binder.clearCallingIdentity(); 2671 try { 2672 wakeUpInternal(eventTime); 2673 } finally { 2674 Binder.restoreCallingIdentity(ident); 2675 } 2676 } 2677 2678 @Override // Binder call 2679 public void goToSleep(long eventTime, int reason) { 2680 if (eventTime > SystemClock.uptimeMillis()) { 2681 throw new IllegalArgumentException("event time must not be in the future"); 2682 } 2683 2684 mContext.enforceCallingOrSelfPermission( 2685 android.Manifest.permission.DEVICE_POWER, null); 2686 2687 final long ident = Binder.clearCallingIdentity(); 2688 try { 2689 goToSleepInternal(eventTime, reason); 2690 } finally { 2691 Binder.restoreCallingIdentity(ident); 2692 } 2693 } 2694 2695 @Override // Binder call 2696 public void nap(long eventTime) { 2697 if (eventTime > SystemClock.uptimeMillis()) { 2698 throw new IllegalArgumentException("event time must not be in the future"); 2699 } 2700 2701 mContext.enforceCallingOrSelfPermission( 2702 android.Manifest.permission.DEVICE_POWER, null); 2703 2704 final long ident = Binder.clearCallingIdentity(); 2705 try { 2706 napInternal(eventTime); 2707 } finally { 2708 Binder.restoreCallingIdentity(ident); 2709 } 2710 } 2711 2712 @Override // Binder call 2713 public boolean isInteractive() { 2714 final long ident = Binder.clearCallingIdentity(); 2715 try { 2716 return isInteractiveInternal(); 2717 } finally { 2718 Binder.restoreCallingIdentity(ident); 2719 } 2720 } 2721 2722 /** 2723 * Reboots the device. 2724 * 2725 * @param confirm If true, shows a reboot confirmation dialog. 2726 * @param reason The reason for the reboot, or null if none. 2727 * @param wait If true, this call waits for the reboot to complete and does not return. 2728 */ 2729 @Override // Binder call 2730 public void reboot(boolean confirm, String reason, boolean wait) { 2731 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2732 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2733 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2734 } 2735 2736 final long ident = Binder.clearCallingIdentity(); 2737 try { 2738 shutdownOrRebootInternal(false, confirm, reason, wait); 2739 } finally { 2740 Binder.restoreCallingIdentity(ident); 2741 } 2742 } 2743 2744 /** 2745 * Shuts down the device. 2746 * 2747 * @param confirm If true, shows a shutdown confirmation dialog. 2748 * @param wait If true, this call waits for the shutdown to complete and does not return. 2749 */ 2750 @Override // Binder call 2751 public void shutdown(boolean confirm, boolean wait) { 2752 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2753 2754 final long ident = Binder.clearCallingIdentity(); 2755 try { 2756 shutdownOrRebootInternal(true, confirm, null, wait); 2757 } finally { 2758 Binder.restoreCallingIdentity(ident); 2759 } 2760 } 2761 2762 /** 2763 * Crash the runtime (causing a complete restart of the Android framework). 2764 * Requires REBOOT permission. Mostly for testing. Should not return. 2765 */ 2766 @Override // Binder call 2767 public void crash(String message) { 2768 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2769 2770 final long ident = Binder.clearCallingIdentity(); 2771 try { 2772 crashInternal(message); 2773 } finally { 2774 Binder.restoreCallingIdentity(ident); 2775 } 2776 } 2777 2778 /** 2779 * Set the setting that determines whether the device stays on when plugged in. 2780 * The argument is a bit string, with each bit specifying a power source that, 2781 * when the device is connected to that source, causes the device to stay on. 2782 * See {@link android.os.BatteryManager} for the list of power sources that 2783 * can be specified. Current values include 2784 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2785 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2786 * 2787 * Used by "adb shell svc power stayon ..." 2788 * 2789 * @param val an {@code int} containing the bits that specify which power sources 2790 * should cause the device to stay on. 2791 */ 2792 @Override // Binder call 2793 public void setStayOnSetting(int val) { 2794 mContext.enforceCallingOrSelfPermission( 2795 android.Manifest.permission.WRITE_SETTINGS, null); 2796 2797 final long ident = Binder.clearCallingIdentity(); 2798 try { 2799 setStayOnSettingInternal(val); 2800 } finally { 2801 Binder.restoreCallingIdentity(ident); 2802 } 2803 } 2804 2805 /** 2806 * Used by device administration to set the maximum screen off timeout. 2807 * 2808 * This method must only be called by the device administration policy manager. 2809 */ 2810 @Override // Binder call 2811 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2812 final long ident = Binder.clearCallingIdentity(); 2813 try { 2814 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2815 } finally { 2816 Binder.restoreCallingIdentity(ident); 2817 } 2818 } 2819 2820 /** 2821 * Used by the settings application and brightness control widgets to 2822 * temporarily override the current screen brightness setting so that the 2823 * user can observe the effect of an intended settings change without applying 2824 * it immediately. 2825 * 2826 * The override will be canceled when the setting value is next updated. 2827 * 2828 * @param brightness The overridden brightness. 2829 * 2830 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2831 */ 2832 @Override // Binder call 2833 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2834 mContext.enforceCallingOrSelfPermission( 2835 android.Manifest.permission.DEVICE_POWER, null); 2836 2837 final long ident = Binder.clearCallingIdentity(); 2838 try { 2839 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2840 } finally { 2841 Binder.restoreCallingIdentity(ident); 2842 } 2843 } 2844 2845 /** 2846 * Used by the settings application and brightness control widgets to 2847 * temporarily override the current screen auto-brightness adjustment setting so that the 2848 * user can observe the effect of an intended settings change without applying 2849 * it immediately. 2850 * 2851 * The override will be canceled when the setting value is next updated. 2852 * 2853 * @param adj The overridden brightness, or Float.NaN to disable the override. 2854 * 2855 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2856 */ 2857 @Override // Binder call 2858 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2859 mContext.enforceCallingOrSelfPermission( 2860 android.Manifest.permission.DEVICE_POWER, null); 2861 2862 final long ident = Binder.clearCallingIdentity(); 2863 try { 2864 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2865 } finally { 2866 Binder.restoreCallingIdentity(ident); 2867 } 2868 } 2869 2870 /** 2871 * Used by the phone application to make the attention LED flash when ringing. 2872 */ 2873 @Override // Binder call 2874 public void setAttentionLight(boolean on, int color) { 2875 mContext.enforceCallingOrSelfPermission( 2876 android.Manifest.permission.DEVICE_POWER, null); 2877 2878 final long ident = Binder.clearCallingIdentity(); 2879 try { 2880 setAttentionLightInternal(on, color); 2881 } finally { 2882 Binder.restoreCallingIdentity(ident); 2883 } 2884 } 2885 2886 @Override // Binder call 2887 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2888 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2889 != PackageManager.PERMISSION_GRANTED) { 2890 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2891 + Binder.getCallingPid() 2892 + ", uid=" + Binder.getCallingUid()); 2893 return; 2894 } 2895 2896 final long ident = Binder.clearCallingIdentity(); 2897 try { 2898 dumpInternal(pw); 2899 } finally { 2900 Binder.restoreCallingIdentity(ident); 2901 } 2902 } 2903 } 2904 2905 private final class LocalService extends PowerManagerInternal { 2906 /** 2907 * Used by the window manager to override the screen brightness based on the 2908 * current foreground activity. 2909 * 2910 * This method must only be called by the window manager. 2911 * 2912 * @param brightness The overridden brightness, or -1 to disable the override. 2913 */ 2914 @Override 2915 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 2916 mContext.enforceCallingOrSelfPermission( 2917 android.Manifest.permission.DEVICE_POWER, null); 2918 2919 final long ident = Binder.clearCallingIdentity(); 2920 try { 2921 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 2922 } finally { 2923 Binder.restoreCallingIdentity(ident); 2924 } 2925 } 2926 2927 /** 2928 * Used by the window manager to override the button brightness based on the 2929 * current foreground activity. 2930 * 2931 * This method must only be called by the window manager. 2932 * 2933 * @param brightness The overridden brightness, or -1 to disable the override. 2934 */ 2935 @Override 2936 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 2937 // Do nothing. 2938 // Button lights are not currently supported in the new implementation. 2939 mContext.enforceCallingOrSelfPermission( 2940 android.Manifest.permission.DEVICE_POWER, null); 2941 } 2942 2943 /** 2944 * Used by the window manager to override the user activity timeout based on the 2945 * current foreground activity. It can only be used to make the timeout shorter 2946 * than usual, not longer. 2947 * 2948 * This method must only be called by the window manager. 2949 * 2950 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 2951 */ 2952 @Override 2953 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 2954 mContext.enforceCallingOrSelfPermission( 2955 android.Manifest.permission.DEVICE_POWER, null); 2956 2957 final long ident = Binder.clearCallingIdentity(); 2958 try { 2959 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 2960 } finally { 2961 Binder.restoreCallingIdentity(ident); 2962 } 2963 } 2964 2965 @Override 2966 public void setPolicy(WindowManagerPolicy policy) { 2967 PowerManagerService.this.setPolicy(policy); 2968 } 2969 } 2970} 2971