PowerManagerService.java revision 966604f1599886989c954b9246f157bb47f4a4f8
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.power; 18 19import com.android.internal.app.IAppOpsService; 20import com.android.internal.app.IBatteryStats; 21import com.android.server.BatteryService; 22import com.android.server.EventLogTags; 23import com.android.server.LocalServices; 24import com.android.server.ServiceThread; 25import com.android.server.lights.Light; 26import com.android.server.lights.LightsManager; 27import com.android.server.twilight.TwilightManager; 28import com.android.server.Watchdog; 29 30import android.Manifest; 31import android.content.BroadcastReceiver; 32import android.content.ContentResolver; 33import android.content.Context; 34import android.content.Intent; 35import android.content.IntentFilter; 36import android.content.pm.PackageManager; 37import android.content.res.Resources; 38import android.database.ContentObserver; 39import android.hardware.SensorManager; 40import android.hardware.SystemSensorManager; 41import android.hardware.display.DisplayManagerInternal; 42import android.net.Uri; 43import android.os.BatteryManager; 44import android.os.Binder; 45import android.os.Handler; 46import android.os.IBinder; 47import android.os.IPowerManager; 48import android.os.Looper; 49import android.os.Message; 50import android.os.PowerManager; 51import android.os.PowerManagerInternal; 52import android.os.Process; 53import android.os.RemoteException; 54import android.os.SystemClock; 55import android.os.SystemProperties; 56import android.os.SystemService; 57import android.os.UserHandle; 58import android.os.WorkSource; 59import android.provider.Settings; 60import android.service.dreams.DreamManagerInternal; 61import android.util.EventLog; 62import android.util.Log; 63import android.util.Slog; 64import android.util.TimeUtils; 65import android.view.WindowManagerPolicy; 66 67import java.io.FileDescriptor; 68import java.io.PrintWriter; 69import java.util.ArrayList; 70 71import libcore.util.Objects; 72 73/** 74 * The power manager service is responsible for coordinating power management 75 * functions on the device. 76 */ 77public final class PowerManagerService extends com.android.server.SystemService 78 implements Watchdog.Monitor { 79 private static final String TAG = "PowerManagerService"; 80 81 private static final boolean DEBUG = false; 82 private static final boolean DEBUG_SPEW = DEBUG && true; 83 84 // Message: Sent when a user activity timeout occurs to update the power state. 85 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 86 // Message: Sent when the device enters or exits a dreaming or dozing state. 87 private static final int MSG_SANDMAN = 2; 88 // Message: Sent when the screen on blocker is released. 89 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 90 // Message: Sent to poll whether the boot animation has terminated. 91 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 92 93 // Dirty bit: mWakeLocks changed 94 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 95 // Dirty bit: mWakefulness changed 96 private static final int DIRTY_WAKEFULNESS = 1 << 1; 97 // Dirty bit: user activity was poked or may have timed out 98 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 99 // Dirty bit: actual display power state was updated asynchronously 100 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 101 // Dirty bit: mBootCompleted changed 102 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 103 // Dirty bit: settings changed 104 private static final int DIRTY_SETTINGS = 1 << 5; 105 // Dirty bit: mIsPowered changed 106 private static final int DIRTY_IS_POWERED = 1 << 6; 107 // Dirty bit: mStayOn changed 108 private static final int DIRTY_STAY_ON = 1 << 7; 109 // Dirty bit: battery state changed 110 private static final int DIRTY_BATTERY_STATE = 1 << 8; 111 // Dirty bit: proximity state changed 112 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 113 // Dirty bit: screen on blocker state became held or unheld 114 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 115 // Dirty bit: dock state changed 116 private static final int DIRTY_DOCK_STATE = 1 << 11; 117 118 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 119 // The screen should be off or in the process of being turned off by the display controller. 120 // The device typically passes through the dozing state first. 121 private static final int WAKEFULNESS_ASLEEP = 0; 122 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 123 // When the user activity timeout expires, the device may start dreaming or go to sleep. 124 private static final int WAKEFULNESS_AWAKE = 1; 125 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 126 // which ends the dream. The device goes to sleep when goToSleep() is called, when 127 // the dream ends or when unplugged. 128 // User activity may brighten the screen but does not end the dream. 129 private static final int WAKEFULNESS_DREAMING = 2; 130 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 131 // low-power "doze" dream to run which keeps the display on but lets the application 132 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 133 // The device fully goes to sleep if the dream cannot be started or ends on its own. 134 private static final int WAKEFULNESS_DOZING = 3; 135 136 // Summarizes the state of all active wakelocks. 137 private static final int WAKE_LOCK_CPU = 1 << 0; 138 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 139 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 140 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 141 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 142 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 143 private static final int WAKE_LOCK_DOZE = 1 << 6; 144 145 // Summarizes the user activity state. 146 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 147 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 148 149 // Default and minimum screen off timeout in milliseconds. 150 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 151 private static final int MINIMUM_SCREEN_OFF_TIMEOUT = 10 * 1000; 152 153 // The screen dim duration, in milliseconds. 154 // This is subtracted from the end of the screen off timeout so the 155 // minimum screen off timeout should be longer than this. 156 private static final int SCREEN_DIM_DURATION = 7 * 1000; 157 158 // The maximum screen dim time expressed as a ratio relative to the screen 159 // off timeout. If the screen off timeout is very short then we want the 160 // dim timeout to also be quite short so that most of the time is spent on. 161 // Otherwise the user won't get much screen on time before dimming occurs. 162 private static final float MAXIMUM_SCREEN_DIM_RATIO = 0.2f; 163 164 // The name of the boot animation service in init.rc. 165 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 166 167 // Poll interval in milliseconds for watching boot animation finished. 168 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 169 170 private final Context mContext; 171 private LightsManager mLightsManager; 172 private BatteryService mBatteryService; 173 private DisplayManagerInternal mDisplayManagerInternal; 174 private IBatteryStats mBatteryStats; 175 private IAppOpsService mAppOps; 176 private ServiceThread mHandlerThread; 177 private PowerManagerHandler mHandler; 178 private WindowManagerPolicy mPolicy; 179 private Notifier mNotifier; 180 private DisplayPowerController mDisplayPowerController; 181 private WirelessChargerDetector mWirelessChargerDetector; 182 private SettingsObserver mSettingsObserver; 183 private DreamManagerInternal mDreamManager; 184 private Light mAttentionLight; 185 186 private final Object mLock = new Object(); 187 188 // A bitfield that indicates what parts of the power state have 189 // changed and need to be recalculated. 190 private int mDirty; 191 192 // Indicates whether the device is awake or asleep or somewhere in between. 193 // This is distinct from the screen power state, which is managed separately. 194 private int mWakefulness; 195 196 // True if the sandman has just been summoned for the first time since entering the 197 // dreaming or dozing state. Indicates whether a new dream should begin. 198 private boolean mSandmanSummoned; 199 200 // True if MSG_SANDMAN has been scheduled. 201 private boolean mSandmanScheduled; 202 203 // Table of all suspend blockers. 204 // There should only be a few of these. 205 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 206 207 // Table of all wake locks acquired by applications. 208 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 209 210 // A bitfield that summarizes the state of all active wakelocks. 211 private int mWakeLockSummary; 212 213 // If true, instructs the display controller to wait for the proximity sensor to 214 // go negative before turning the screen on. 215 private boolean mRequestWaitForNegativeProximity; 216 217 // Timestamp of the last time the device was awoken or put to sleep. 218 private long mLastWakeTime; 219 private long mLastSleepTime; 220 221 // True if we need to send a wake up or go to sleep finished notification 222 // when the display is ready. 223 private boolean mSendWakeUpFinishedNotificationWhenReady; 224 private boolean mSendGoToSleepFinishedNotificationWhenReady; 225 226 // Timestamp of the last call to user activity. 227 private long mLastUserActivityTime; 228 private long mLastUserActivityTimeNoChangeLights; 229 230 // A bitfield that summarizes the effect of the user activity timer. 231 // A zero value indicates that the user activity timer has expired. 232 private int mUserActivitySummary; 233 234 // The desired display power state. The actual state may lag behind the 235 // requested because it is updated asynchronously by the display power controller. 236 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 237 238 // True if the display power state has been fully applied, which means the display 239 // is actually on or actually off or whatever was requested. 240 private boolean mDisplayReady; 241 242 // The suspend blocker used to keep the CPU alive when an application has acquired 243 // a wake lock. 244 private final SuspendBlocker mWakeLockSuspendBlocker; 245 246 // True if the wake lock suspend blocker has been acquired. 247 private boolean mHoldingWakeLockSuspendBlocker; 248 249 // The suspend blocker used to keep the CPU alive when the display is on, the 250 // display is getting ready or there is user activity (in which case the display 251 // must be on). 252 private final SuspendBlocker mDisplaySuspendBlocker; 253 254 // True if the display suspend blocker has been acquired. 255 private boolean mHoldingDisplaySuspendBlocker; 256 257 // The screen on blocker used to keep the screen from turning on while the lock 258 // screen is coming up. 259 private final ScreenOnBlockerImpl mScreenOnBlocker; 260 261 // The display blanker used to turn the screen on or off. 262 private final DisplayBlankerImpl mDisplayBlanker; 263 264 // True if systemReady() has been called. 265 private boolean mSystemReady; 266 267 // True if boot completed occurred. We keep the screen on until this happens. 268 private boolean mBootCompleted; 269 270 // True if auto-suspend mode is enabled. 271 // Refer to autosuspend.h. 272 private boolean mAutoSuspendModeEnabled; 273 274 // True if interactive mode is enabled. 275 // Refer to power.h. 276 private boolean mInteractiveModeEnabled; 277 278 // True if the device is plugged into a power source. 279 private boolean mIsPowered; 280 281 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 282 private int mPlugType; 283 284 // The current battery level percentage. 285 private int mBatteryLevel; 286 287 // The battery level percentage at the time the dream started. 288 // This is used to terminate a dream and go to sleep if the battery is 289 // draining faster than it is charging and the user activity timeout has expired. 290 private int mBatteryLevelWhenDreamStarted; 291 292 // The current dock state. 293 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 294 295 // True to decouple auto-suspend mode from the display state. 296 private boolean mDecoupleAutoSuspendModeFromDisplayConfig; 297 298 // True to decouple interactive mode from the display state. 299 private boolean mDecoupleInteractiveModeFromDisplayConfig; 300 301 // True if the device should wake up when plugged or unplugged. 302 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 303 304 // True if the device should suspend when the screen is off due to proximity. 305 private boolean mSuspendWhenScreenOffDueToProximityConfig; 306 307 // True if dreams are supported on this device. 308 private boolean mDreamsSupportedConfig; 309 310 // Default value for dreams enabled 311 private boolean mDreamsEnabledByDefaultConfig; 312 313 // Default value for dreams activate-on-sleep 314 private boolean mDreamsActivatedOnSleepByDefaultConfig; 315 316 // Default value for dreams activate-on-dock 317 private boolean mDreamsActivatedOnDockByDefaultConfig; 318 319 // True if dreams can run while not plugged in. 320 private boolean mDreamsEnabledOnBatteryConfig; 321 322 // Minimum battery level to allow dreaming when powered. 323 // Use -1 to disable this safety feature. 324 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 325 326 // Minimum battery level to allow dreaming when not powered. 327 // Use -1 to disable this safety feature. 328 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 329 330 // If the battery level drops by this percentage and the user activity timeout 331 // has expired, then assume the device is receiving insufficient current to charge 332 // effectively and terminate the dream. Use -1 to disable this safety feature. 333 private int mDreamsBatteryLevelDrainCutoffConfig; 334 335 // True if dreams are enabled by the user. 336 private boolean mDreamsEnabledSetting; 337 338 // True if dreams should be activated on sleep. 339 private boolean mDreamsActivateOnSleepSetting; 340 341 // True if dreams should be activated on dock. 342 private boolean mDreamsActivateOnDockSetting; 343 344 // The screen off timeout setting value in milliseconds. 345 private int mScreenOffTimeoutSetting; 346 347 // The maximum allowable screen off timeout according to the device 348 // administration policy. Overrides other settings. 349 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 350 351 // The stay on while plugged in setting. 352 // A bitfield of battery conditions under which to make the screen stay on. 353 private int mStayOnWhilePluggedInSetting; 354 355 // True if the device should stay on. 356 private boolean mStayOn; 357 358 // True if the proximity sensor reads a positive result. 359 private boolean mProximityPositive; 360 361 // Screen brightness setting limits. 362 private int mScreenBrightnessSettingMinimum; 363 private int mScreenBrightnessSettingMaximum; 364 private int mScreenBrightnessSettingDefault; 365 366 // The screen brightness setting, from 0 to 255. 367 // Use -1 if no value has been set. 368 private int mScreenBrightnessSetting; 369 370 // The screen auto-brightness adjustment setting, from -1 to 1. 371 // Use 0 if there is no adjustment. 372 private float mScreenAutoBrightnessAdjustmentSetting; 373 374 // The screen brightness mode. 375 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 376 private int mScreenBrightnessModeSetting; 377 378 // The screen brightness setting override from the window manager 379 // to allow the current foreground activity to override the brightness. 380 // Use -1 to disable. 381 private int mScreenBrightnessOverrideFromWindowManager = -1; 382 383 // The user activity timeout override from the window manager 384 // to allow the current foreground activity to override the user activity timeout. 385 // Use -1 to disable. 386 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 387 388 // The screen brightness setting override from the settings application 389 // to temporarily adjust the brightness until next updated, 390 // Use -1 to disable. 391 private int mTemporaryScreenBrightnessSettingOverride = -1; 392 393 // The screen brightness adjustment setting override from the settings 394 // application to temporarily adjust the auto-brightness adjustment factor 395 // until next updated, in the range -1..1. 396 // Use NaN to disable. 397 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 398 399 // Time when we last logged a warning about calling userActivity() without permission. 400 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 401 402 private native void nativeInit(); 403 404 private static native void nativeSetPowerState(boolean screenOn, boolean screenBright); 405 private static native void nativeAcquireSuspendBlocker(String name); 406 private static native void nativeReleaseSuspendBlocker(String name); 407 private static native void nativeSetInteractive(boolean enable); 408 private static native void nativeSetAutoSuspend(boolean enable); 409 410 public PowerManagerService(Context context) { 411 super(context); 412 mContext = context; 413 synchronized (mLock) { 414 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 415 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 416 mDisplaySuspendBlocker.acquire(); 417 mHoldingDisplaySuspendBlocker = true; 418 419 mScreenOnBlocker = new ScreenOnBlockerImpl(); 420 mDisplayBlanker = new DisplayBlankerImpl(); 421 mWakefulness = WAKEFULNESS_AWAKE; 422 } 423 424 nativeInit(); 425 nativeSetPowerState(true, true); 426 } 427 428 @Override 429 public void onStart() { 430 publishBinderService(Context.POWER_SERVICE, new BinderService()); 431 publishLocalService(PowerManagerInternal.class, new LocalService()); 432 } 433 434 /** 435 * Initialize the power manager. 436 * Must be called before any other functions within the power manager are called. 437 */ 438 public void init(LightsManager ls, 439 BatteryService bs, IBatteryStats bss, 440 IAppOpsService appOps) { 441 mLightsManager = ls; 442 mBatteryService = bs; 443 mBatteryStats = bss; 444 mAppOps = appOps; 445 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 446 mHandlerThread = new ServiceThread(TAG, 447 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 448 mHandlerThread.start(); 449 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 450 451 Watchdog.getInstance().addMonitor(this); 452 Watchdog.getInstance().addThread(mHandler); 453 454 // Forcibly turn the screen on at boot so that it is in a known power state. 455 // We do this in init() rather than in the constructor because setting the 456 // screen state requires a call into surface flinger which then needs to call back 457 // into the activity manager to check permissions. Unfortunately the 458 // activity manager is not running when the constructor is called, so we 459 // have to defer setting the screen state until this point. 460 mDisplayBlanker.unblankAllDisplays(); 461 } 462 463 void setPolicy(WindowManagerPolicy policy) { 464 synchronized (mLock) { 465 mPolicy = policy; 466 } 467 } 468 469 public void systemReady() { 470 synchronized (mLock) { 471 mSystemReady = true; 472 mDreamManager = LocalServices.getService(DreamManagerInternal.class); 473 474 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 475 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 476 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 477 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 478 479 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 480 481 // The notifier runs on the system server's main looper so as not to interfere 482 // with the animations and other critical functions of the power manager. 483 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 484 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 485 mScreenOnBlocker, mPolicy); 486 487 // The display power controller runs on the power manager service's 488 // own handler thread to ensure timely operation. 489 mDisplayPowerController = new DisplayPowerController(mHandler.getLooper(), 490 mContext, mNotifier, mLightsManager, 491 LocalServices.getService(TwilightManager.class), sensorManager, 492 mDisplaySuspendBlocker, mDisplayBlanker, 493 mDisplayPowerControllerCallbacks, mHandler); 494 495 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 496 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 497 mHandler); 498 mSettingsObserver = new SettingsObserver(mHandler); 499 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 500 501 // Register for broadcasts from other components of the system. 502 IntentFilter filter = new IntentFilter(); 503 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 504 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 505 506 filter = new IntentFilter(); 507 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 508 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 509 510 filter = new IntentFilter(); 511 filter.addAction(Intent.ACTION_DREAMING_STARTED); 512 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 513 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 514 515 filter = new IntentFilter(); 516 filter.addAction(Intent.ACTION_USER_SWITCHED); 517 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 518 519 filter = new IntentFilter(); 520 filter.addAction(Intent.ACTION_DOCK_EVENT); 521 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 522 523 // Register for settings changes. 524 final ContentResolver resolver = mContext.getContentResolver(); 525 resolver.registerContentObserver(Settings.Secure.getUriFor( 526 Settings.Secure.SCREENSAVER_ENABLED), 527 false, mSettingsObserver, UserHandle.USER_ALL); 528 resolver.registerContentObserver(Settings.Secure.getUriFor( 529 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 530 false, mSettingsObserver, UserHandle.USER_ALL); 531 resolver.registerContentObserver(Settings.Secure.getUriFor( 532 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 533 false, mSettingsObserver, UserHandle.USER_ALL); 534 resolver.registerContentObserver(Settings.System.getUriFor( 535 Settings.System.SCREEN_OFF_TIMEOUT), 536 false, mSettingsObserver, UserHandle.USER_ALL); 537 resolver.registerContentObserver(Settings.Global.getUriFor( 538 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 539 false, mSettingsObserver, UserHandle.USER_ALL); 540 resolver.registerContentObserver(Settings.System.getUriFor( 541 Settings.System.SCREEN_BRIGHTNESS), 542 false, mSettingsObserver, UserHandle.USER_ALL); 543 resolver.registerContentObserver(Settings.System.getUriFor( 544 Settings.System.SCREEN_BRIGHTNESS_MODE), 545 false, mSettingsObserver, UserHandle.USER_ALL); 546 547 // Go. 548 readConfigurationLocked(); 549 updateSettingsLocked(); 550 mDirty |= DIRTY_BATTERY_STATE; 551 updatePowerStateLocked(); 552 } 553 } 554 555 private void readConfigurationLocked() { 556 final Resources resources = mContext.getResources(); 557 558 mDecoupleAutoSuspendModeFromDisplayConfig = resources.getBoolean( 559 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 560 mDecoupleInteractiveModeFromDisplayConfig = resources.getBoolean( 561 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 562 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 563 com.android.internal.R.bool.config_unplugTurnsOnScreen); 564 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 565 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 566 mDreamsSupportedConfig = resources.getBoolean( 567 com.android.internal.R.bool.config_dreamsSupported); 568 mDreamsEnabledByDefaultConfig = resources.getBoolean( 569 com.android.internal.R.bool.config_dreamsEnabledByDefault); 570 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 571 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 572 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 573 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 574 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 575 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 576 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 577 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 578 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 579 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 580 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 581 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 582 } 583 584 private void updateSettingsLocked() { 585 final ContentResolver resolver = mContext.getContentResolver(); 586 587 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 588 Settings.Secure.SCREENSAVER_ENABLED, 589 mDreamsEnabledByDefaultConfig ? 1 : 0, 590 UserHandle.USER_CURRENT) != 0); 591 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 592 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 593 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 594 UserHandle.USER_CURRENT) != 0); 595 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 596 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 597 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 598 UserHandle.USER_CURRENT) != 0); 599 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 600 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 601 UserHandle.USER_CURRENT); 602 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 603 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 604 605 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 606 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 607 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 608 UserHandle.USER_CURRENT); 609 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 610 mTemporaryScreenBrightnessSettingOverride = -1; 611 } 612 613 final float oldScreenAutoBrightnessAdjustmentSetting = 614 mScreenAutoBrightnessAdjustmentSetting; 615 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 616 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 617 UserHandle.USER_CURRENT); 618 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 619 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 620 } 621 622 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 623 Settings.System.SCREEN_BRIGHTNESS_MODE, 624 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 625 626 mDirty |= DIRTY_SETTINGS; 627 } 628 629 private void handleSettingsChangedLocked() { 630 updateSettingsLocked(); 631 updatePowerStateLocked(); 632 } 633 634 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 635 WorkSource ws, int uid, int pid) { 636 synchronized (mLock) { 637 if (DEBUG_SPEW) { 638 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 639 + ", flags=0x" + Integer.toHexString(flags) 640 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 641 } 642 643 WakeLock wakeLock; 644 int index = findWakeLockIndexLocked(lock); 645 if (index >= 0) { 646 wakeLock = mWakeLocks.get(index); 647 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 648 // Update existing wake lock. This shouldn't happen but is harmless. 649 notifyWakeLockReleasedLocked(wakeLock); 650 wakeLock.updateProperties(flags, tag, packageName, ws, uid, pid); 651 notifyWakeLockAcquiredLocked(wakeLock); 652 } 653 } else { 654 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, uid, pid); 655 try { 656 lock.linkToDeath(wakeLock, 0); 657 } catch (RemoteException ex) { 658 throw new IllegalArgumentException("Wake lock is already dead."); 659 } 660 notifyWakeLockAcquiredLocked(wakeLock); 661 mWakeLocks.add(wakeLock); 662 } 663 664 applyWakeLockFlagsOnAcquireLocked(wakeLock); 665 mDirty |= DIRTY_WAKE_LOCKS; 666 updatePowerStateLocked(); 667 } 668 } 669 670 @SuppressWarnings("deprecation") 671 private static boolean isScreenLock(final WakeLock wakeLock) { 672 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 673 case PowerManager.FULL_WAKE_LOCK: 674 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 675 case PowerManager.SCREEN_DIM_WAKE_LOCK: 676 return true; 677 } 678 return false; 679 } 680 681 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 682 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 683 && isScreenLock(wakeLock)) { 684 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 685 } 686 } 687 688 private void releaseWakeLockInternal(IBinder lock, int flags) { 689 synchronized (mLock) { 690 int index = findWakeLockIndexLocked(lock); 691 if (index < 0) { 692 if (DEBUG_SPEW) { 693 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 694 + " [not found], flags=0x" + Integer.toHexString(flags)); 695 } 696 return; 697 } 698 699 WakeLock wakeLock = mWakeLocks.get(index); 700 if (DEBUG_SPEW) { 701 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 702 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 703 } 704 705 mWakeLocks.remove(index); 706 notifyWakeLockReleasedLocked(wakeLock); 707 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 708 709 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 710 mRequestWaitForNegativeProximity = true; 711 } 712 713 applyWakeLockFlagsOnReleaseLocked(wakeLock); 714 mDirty |= DIRTY_WAKE_LOCKS; 715 updatePowerStateLocked(); 716 } 717 } 718 719 private void handleWakeLockDeath(WakeLock wakeLock) { 720 synchronized (mLock) { 721 if (DEBUG_SPEW) { 722 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 723 + " [" + wakeLock.mTag + "]"); 724 } 725 726 int index = mWakeLocks.indexOf(wakeLock); 727 if (index < 0) { 728 return; 729 } 730 731 mWakeLocks.remove(index); 732 notifyWakeLockReleasedLocked(wakeLock); 733 734 applyWakeLockFlagsOnReleaseLocked(wakeLock); 735 mDirty |= DIRTY_WAKE_LOCKS; 736 updatePowerStateLocked(); 737 } 738 } 739 740 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 741 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 742 && isScreenLock(wakeLock)) { 743 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 744 PowerManager.USER_ACTIVITY_EVENT_OTHER, 745 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 746 wakeLock.mOwnerUid); 747 } 748 } 749 750 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws) { 751 synchronized (mLock) { 752 int index = findWakeLockIndexLocked(lock); 753 if (index < 0) { 754 if (DEBUG_SPEW) { 755 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 756 + " [not found], ws=" + ws); 757 } 758 throw new IllegalArgumentException("Wake lock not active"); 759 } 760 761 WakeLock wakeLock = mWakeLocks.get(index); 762 if (DEBUG_SPEW) { 763 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 764 + " [" + wakeLock.mTag + "], ws=" + ws); 765 } 766 767 if (!wakeLock.hasSameWorkSource(ws)) { 768 notifyWakeLockReleasedLocked(wakeLock); 769 wakeLock.updateWorkSource(ws); 770 notifyWakeLockAcquiredLocked(wakeLock); 771 } 772 } 773 } 774 775 private int findWakeLockIndexLocked(IBinder lock) { 776 final int count = mWakeLocks.size(); 777 for (int i = 0; i < count; i++) { 778 if (mWakeLocks.get(i).mLock == lock) { 779 return i; 780 } 781 } 782 return -1; 783 } 784 785 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 786 if (mSystemReady) { 787 wakeLock.mNotifiedAcquired = true; 788 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 789 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 790 } 791 } 792 793 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 794 if (mSystemReady && wakeLock.mNotifiedAcquired) { 795 wakeLock.mNotifiedAcquired = false; 796 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 797 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 798 } 799 } 800 801 @SuppressWarnings("deprecation") 802 private boolean isWakeLockLevelSupportedInternal(int level) { 803 synchronized (mLock) { 804 switch (level) { 805 case PowerManager.PARTIAL_WAKE_LOCK: 806 case PowerManager.SCREEN_DIM_WAKE_LOCK: 807 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 808 case PowerManager.FULL_WAKE_LOCK: 809 case PowerManager.DOZE_WAKE_LOCK: 810 return true; 811 812 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 813 return mSystemReady && mDisplayPowerController.isProximitySensorAvailable(); 814 815 default: 816 return false; 817 } 818 } 819 } 820 821 // Called from native code. 822 private void userActivityFromNative(long eventTime, int event, int flags) { 823 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 824 } 825 826 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 827 synchronized (mLock) { 828 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 829 updatePowerStateLocked(); 830 } 831 } 832 } 833 834 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 835 if (DEBUG_SPEW) { 836 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 837 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 838 + ", uid=" + uid); 839 } 840 841 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 842 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 843 || !mBootCompleted || !mSystemReady) { 844 return false; 845 } 846 847 mNotifier.onUserActivity(event, uid); 848 849 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 850 if (eventTime > mLastUserActivityTimeNoChangeLights 851 && eventTime > mLastUserActivityTime) { 852 mLastUserActivityTimeNoChangeLights = eventTime; 853 mDirty |= DIRTY_USER_ACTIVITY; 854 return true; 855 } 856 } else { 857 if (eventTime > mLastUserActivityTime) { 858 mLastUserActivityTime = eventTime; 859 mDirty |= DIRTY_USER_ACTIVITY; 860 return true; 861 } 862 } 863 return false; 864 } 865 866 // Called from native code. 867 private void wakeUpFromNative(long eventTime) { 868 wakeUpInternal(eventTime); 869 } 870 871 private void wakeUpInternal(long eventTime) { 872 synchronized (mLock) { 873 if (wakeUpNoUpdateLocked(eventTime)) { 874 updatePowerStateLocked(); 875 } 876 } 877 } 878 879 private boolean wakeUpNoUpdateLocked(long eventTime) { 880 if (DEBUG_SPEW) { 881 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 882 } 883 884 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 885 || !mBootCompleted || !mSystemReady) { 886 return false; 887 } 888 889 switch (mWakefulness) { 890 case WAKEFULNESS_ASLEEP: 891 Slog.i(TAG, "Waking up from sleep..."); 892 break; 893 case WAKEFULNESS_DREAMING: 894 Slog.i(TAG, "Waking up from dream..."); 895 break; 896 case WAKEFULNESS_DOZING: 897 Slog.i(TAG, "Waking up from dozing..."); 898 break; 899 } 900 901 if (mWakefulness != WAKEFULNESS_DREAMING) { 902 sendPendingNotificationsLocked(); 903 mNotifier.onWakeUpStarted(); 904 mSendWakeUpFinishedNotificationWhenReady = true; 905 } 906 907 mLastWakeTime = eventTime; 908 mWakefulness = WAKEFULNESS_AWAKE; 909 mDirty |= DIRTY_WAKEFULNESS; 910 911 userActivityNoUpdateLocked( 912 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 913 return true; 914 } 915 916 // Called from native code. 917 private void goToSleepFromNative(long eventTime, int reason) { 918 goToSleepInternal(eventTime, reason); 919 } 920 921 private void goToSleepInternal(long eventTime, int reason) { 922 synchronized (mLock) { 923 if (goToSleepNoUpdateLocked(eventTime, reason)) { 924 updatePowerStateLocked(); 925 } 926 } 927 } 928 929 // This method is called goToSleep for historical reasons but we actually start 930 // dozing before really going to sleep. 931 @SuppressWarnings("deprecation") 932 private boolean goToSleepNoUpdateLocked(long eventTime, int reason) { 933 if (DEBUG_SPEW) { 934 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime + ", reason=" + reason); 935 } 936 937 if (eventTime < mLastWakeTime 938 || mWakefulness == WAKEFULNESS_ASLEEP 939 || mWakefulness == WAKEFULNESS_DOZING 940 || !mBootCompleted || !mSystemReady) { 941 return false; 942 } 943 944 switch (reason) { 945 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 946 Slog.i(TAG, "Going to sleep due to device administration policy..."); 947 break; 948 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 949 Slog.i(TAG, "Going to sleep due to screen timeout..."); 950 break; 951 default: 952 Slog.i(TAG, "Going to sleep by user request..."); 953 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 954 break; 955 } 956 957 sendPendingNotificationsLocked(); 958 mNotifier.onGoToSleepStarted(reason); 959 mSendGoToSleepFinishedNotificationWhenReady = true; 960 961 mLastSleepTime = eventTime; 962 mDirty |= DIRTY_WAKEFULNESS; 963 mWakefulness = WAKEFULNESS_DOZING; 964 mSandmanSummoned = true; 965 966 // Report the number of wake locks that will be cleared by going to sleep. 967 int numWakeLocksCleared = 0; 968 final int numWakeLocks = mWakeLocks.size(); 969 for (int i = 0; i < numWakeLocks; i++) { 970 final WakeLock wakeLock = mWakeLocks.get(i); 971 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 972 case PowerManager.FULL_WAKE_LOCK: 973 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 974 case PowerManager.SCREEN_DIM_WAKE_LOCK: 975 numWakeLocksCleared += 1; 976 break; 977 } 978 } 979 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 980 return true; 981 } 982 983 private void napInternal(long eventTime) { 984 synchronized (mLock) { 985 if (napNoUpdateLocked(eventTime)) { 986 updatePowerStateLocked(); 987 } 988 } 989 } 990 991 private boolean napNoUpdateLocked(long eventTime) { 992 if (DEBUG_SPEW) { 993 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 994 } 995 996 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 997 || !mBootCompleted || !mSystemReady) { 998 return false; 999 } 1000 1001 Slog.i(TAG, "Nap time..."); 1002 1003 mDirty |= DIRTY_WAKEFULNESS; 1004 mWakefulness = WAKEFULNESS_DREAMING; 1005 mSandmanSummoned = true; 1006 return true; 1007 } 1008 1009 // Done dozing, drop everything and go to sleep. 1010 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 1011 if (DEBUG_SPEW) { 1012 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 1013 } 1014 1015 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1016 || !mBootCompleted || !mSystemReady) { 1017 return false; 1018 } 1019 1020 Slog.i(TAG, "Sleeping..."); 1021 1022 mDirty |= DIRTY_WAKEFULNESS; 1023 mWakefulness = WAKEFULNESS_ASLEEP; 1024 return true; 1025 } 1026 1027 /** 1028 * Updates the global power state based on dirty bits recorded in mDirty. 1029 * 1030 * This is the main function that performs power state transitions. 1031 * We centralize them here so that we can recompute the power state completely 1032 * each time something important changes, and ensure that we do it the same 1033 * way each time. The point is to gather all of the transition logic here. 1034 */ 1035 private void updatePowerStateLocked() { 1036 if (!mSystemReady || mDirty == 0) { 1037 return; 1038 } 1039 1040 // Phase 0: Basic state updates. 1041 updateIsPoweredLocked(mDirty); 1042 updateStayOnLocked(mDirty); 1043 1044 // Phase 1: Update wakefulness. 1045 // Loop because the wake lock and user activity computations are influenced 1046 // by changes in wakefulness. 1047 final long now = SystemClock.uptimeMillis(); 1048 int dirtyPhase2 = 0; 1049 for (;;) { 1050 int dirtyPhase1 = mDirty; 1051 dirtyPhase2 |= dirtyPhase1; 1052 mDirty = 0; 1053 1054 updateWakeLockSummaryLocked(dirtyPhase1); 1055 updateUserActivitySummaryLocked(now, dirtyPhase1); 1056 if (!updateWakefulnessLocked(dirtyPhase1)) { 1057 break; 1058 } 1059 } 1060 1061 // Phase 2: Update dreams and display power state. 1062 updateDreamLocked(dirtyPhase2); 1063 updateDisplayPowerStateLocked(dirtyPhase2); 1064 1065 // Phase 3: Send notifications, if needed. 1066 if (mDisplayReady) { 1067 sendPendingNotificationsLocked(); 1068 } 1069 1070 // Phase 4: Update suspend blocker. 1071 // Because we might release the last suspend blocker here, we need to make sure 1072 // we finished everything else first! 1073 updateSuspendBlockerLocked(); 1074 } 1075 1076 private void sendPendingNotificationsLocked() { 1077 if (mSendWakeUpFinishedNotificationWhenReady) { 1078 mSendWakeUpFinishedNotificationWhenReady = false; 1079 mNotifier.onWakeUpFinished(); 1080 } 1081 if (mSendGoToSleepFinishedNotificationWhenReady) { 1082 mSendGoToSleepFinishedNotificationWhenReady = false; 1083 mNotifier.onGoToSleepFinished(); 1084 } 1085 } 1086 1087 /** 1088 * Updates the value of mIsPowered. 1089 * Sets DIRTY_IS_POWERED if a change occurred. 1090 */ 1091 private void updateIsPoweredLocked(int dirty) { 1092 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1093 final boolean wasPowered = mIsPowered; 1094 final int oldPlugType = mPlugType; 1095 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1096 mPlugType = mBatteryService.getPlugType(); 1097 mBatteryLevel = mBatteryService.getBatteryLevel(); 1098 1099 if (DEBUG_SPEW) { 1100 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1101 + ", mIsPowered=" + mIsPowered 1102 + ", oldPlugType=" + oldPlugType 1103 + ", mPlugType=" + mPlugType 1104 + ", mBatteryLevel=" + mBatteryLevel); 1105 } 1106 1107 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1108 mDirty |= DIRTY_IS_POWERED; 1109 1110 // Update wireless dock detection state. 1111 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1112 mIsPowered, mPlugType, mBatteryLevel); 1113 1114 // Treat plugging and unplugging the devices as a user activity. 1115 // Users find it disconcerting when they plug or unplug the device 1116 // and it shuts off right away. 1117 // Some devices also wake the device when plugged or unplugged because 1118 // they don't have a charging LED. 1119 final long now = SystemClock.uptimeMillis(); 1120 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1121 dockedOnWirelessCharger)) { 1122 wakeUpNoUpdateLocked(now); 1123 } 1124 userActivityNoUpdateLocked( 1125 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1126 1127 // Tell the notifier whether wireless charging has started so that 1128 // it can provide feedback to the user. 1129 if (dockedOnWirelessCharger) { 1130 mNotifier.onWirelessChargingStarted(); 1131 } 1132 } 1133 } 1134 } 1135 1136 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1137 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1138 // Don't wake when powered unless configured to do so. 1139 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1140 return false; 1141 } 1142 1143 // Don't wake when undocked from wireless charger. 1144 // See WirelessChargerDetector for justification. 1145 if (wasPowered && !mIsPowered 1146 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1147 return false; 1148 } 1149 1150 // Don't wake when docked on wireless charger unless we are certain of it. 1151 // See WirelessChargerDetector for justification. 1152 if (!wasPowered && mIsPowered 1153 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1154 && !dockedOnWirelessCharger) { 1155 return false; 1156 } 1157 1158 // If already dreaming and becoming powered, then don't wake. 1159 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1160 return false; 1161 } 1162 1163 // Otherwise wake up! 1164 return true; 1165 } 1166 1167 /** 1168 * Updates the value of mStayOn. 1169 * Sets DIRTY_STAY_ON if a change occurred. 1170 */ 1171 private void updateStayOnLocked(int dirty) { 1172 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1173 final boolean wasStayOn = mStayOn; 1174 if (mStayOnWhilePluggedInSetting != 0 1175 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1176 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1177 } else { 1178 mStayOn = false; 1179 } 1180 1181 if (mStayOn != wasStayOn) { 1182 mDirty |= DIRTY_STAY_ON; 1183 } 1184 } 1185 } 1186 1187 /** 1188 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1189 * Note that most wake-locks are ignored when the system is asleep. 1190 * 1191 * This function must have no other side-effects. 1192 */ 1193 @SuppressWarnings("deprecation") 1194 private void updateWakeLockSummaryLocked(int dirty) { 1195 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1196 mWakeLockSummary = 0; 1197 1198 final int numWakeLocks = mWakeLocks.size(); 1199 for (int i = 0; i < numWakeLocks; i++) { 1200 final WakeLock wakeLock = mWakeLocks.get(i); 1201 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1202 case PowerManager.PARTIAL_WAKE_LOCK: 1203 mWakeLockSummary |= WAKE_LOCK_CPU; 1204 break; 1205 case PowerManager.FULL_WAKE_LOCK: 1206 if (mWakefulness == WAKEFULNESS_AWAKE 1207 || mWakefulness == WAKEFULNESS_DREAMING) { 1208 mWakeLockSummary |= WAKE_LOCK_CPU 1209 | WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1210 } 1211 if (mWakefulness == WAKEFULNESS_AWAKE) { 1212 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1213 } 1214 break; 1215 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1216 if (mWakefulness == WAKEFULNESS_AWAKE 1217 || mWakefulness == WAKEFULNESS_DREAMING) { 1218 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_SCREEN_BRIGHT; 1219 } 1220 if (mWakefulness == WAKEFULNESS_AWAKE) { 1221 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1222 } 1223 break; 1224 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1225 if (mWakefulness == WAKEFULNESS_AWAKE 1226 || mWakefulness == WAKEFULNESS_DREAMING) { 1227 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_SCREEN_DIM; 1228 } 1229 if (mWakefulness == WAKEFULNESS_AWAKE) { 1230 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1231 } 1232 break; 1233 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1234 if (mWakefulness == WAKEFULNESS_AWAKE 1235 || mWakefulness == WAKEFULNESS_DREAMING 1236 || mWakefulness == WAKEFULNESS_DOZING) { 1237 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1238 } 1239 break; 1240 case PowerManager.DOZE_WAKE_LOCK: 1241 if (mWakefulness == WAKEFULNESS_DOZING) { 1242 mWakeLockSummary |= WAKE_LOCK_DOZE; 1243 } 1244 break; 1245 } 1246 } 1247 1248 if (DEBUG_SPEW) { 1249 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1250 + wakefulnessToString(mWakefulness) 1251 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1252 } 1253 } 1254 } 1255 1256 /** 1257 * Updates the value of mUserActivitySummary to summarize the user requested 1258 * state of the system such as whether the screen should be bright or dim. 1259 * Note that user activity is ignored when the system is asleep. 1260 * 1261 * This function must have no other side-effects. 1262 */ 1263 private void updateUserActivitySummaryLocked(long now, int dirty) { 1264 // Update the status of the user activity timeout timer. 1265 if ((dirty & (DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1266 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1267 1268 long nextTimeout = 0; 1269 if (mWakefulness == WAKEFULNESS_AWAKE 1270 || mWakefulness == WAKEFULNESS_DREAMING) { 1271 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1272 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1273 1274 mUserActivitySummary = 0; 1275 if (mLastUserActivityTime >= mLastWakeTime) { 1276 nextTimeout = mLastUserActivityTime 1277 + screenOffTimeout - screenDimDuration; 1278 if (now < nextTimeout) { 1279 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1280 } else { 1281 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1282 if (now < nextTimeout) { 1283 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1284 } 1285 } 1286 } 1287 if (mUserActivitySummary == 0 1288 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1289 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1290 if (now < nextTimeout 1291 && mDisplayPowerRequest.wantScreenOnNormal()) { 1292 mUserActivitySummary = mDisplayPowerRequest.screenState 1293 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1294 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1295 } 1296 } 1297 if (mUserActivitySummary != 0) { 1298 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1299 msg.setAsynchronous(true); 1300 mHandler.sendMessageAtTime(msg, nextTimeout); 1301 } 1302 } else { 1303 mUserActivitySummary = 0; 1304 } 1305 1306 if (DEBUG_SPEW) { 1307 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1308 + wakefulnessToString(mWakefulness) 1309 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1310 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1311 } 1312 } 1313 } 1314 1315 /** 1316 * Called when a user activity timeout has occurred. 1317 * Simply indicates that something about user activity has changed so that the new 1318 * state can be recomputed when the power state is updated. 1319 * 1320 * This function must have no other side-effects besides setting the dirty 1321 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1322 */ 1323 private void handleUserActivityTimeout() { // runs on handler thread 1324 synchronized (mLock) { 1325 if (DEBUG_SPEW) { 1326 Slog.d(TAG, "handleUserActivityTimeout"); 1327 } 1328 1329 mDirty |= DIRTY_USER_ACTIVITY; 1330 updatePowerStateLocked(); 1331 } 1332 } 1333 1334 private int getScreenOffTimeoutLocked() { 1335 int timeout = mScreenOffTimeoutSetting; 1336 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1337 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1338 } 1339 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1340 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1341 } 1342 return Math.max(timeout, MINIMUM_SCREEN_OFF_TIMEOUT); 1343 } 1344 1345 private int getScreenDimDurationLocked(int screenOffTimeout) { 1346 return Math.min(SCREEN_DIM_DURATION, 1347 (int)(screenOffTimeout * MAXIMUM_SCREEN_DIM_RATIO)); 1348 } 1349 1350 /** 1351 * Updates the wakefulness of the device. 1352 * 1353 * This is the function that decides whether the device should start dreaming 1354 * based on the current wake locks and user activity state. It may modify mDirty 1355 * if the wakefulness changes. 1356 * 1357 * Returns true if the wakefulness changed and we need to restart power state calculation. 1358 */ 1359 private boolean updateWakefulnessLocked(int dirty) { 1360 boolean changed = false; 1361 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1362 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1363 | DIRTY_DOCK_STATE)) != 0) { 1364 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1365 if (DEBUG_SPEW) { 1366 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1367 } 1368 final long time = SystemClock.uptimeMillis(); 1369 if (shouldNapAtBedTimeLocked()) { 1370 changed = napNoUpdateLocked(time); 1371 } else { 1372 changed = goToSleepNoUpdateLocked(time, 1373 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1374 } 1375 } 1376 } 1377 return changed; 1378 } 1379 1380 /** 1381 * Returns true if the device should automatically nap and start dreaming when the user 1382 * activity timeout has expired and it's bedtime. 1383 */ 1384 private boolean shouldNapAtBedTimeLocked() { 1385 return mDreamsActivateOnSleepSetting 1386 || (mDreamsActivateOnDockSetting 1387 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1388 } 1389 1390 /** 1391 * Returns true if the device should go to sleep now. 1392 * Also used when exiting a dream to determine whether we should go back 1393 * to being fully awake or else go to sleep for good. 1394 */ 1395 private boolean isItBedTimeYetLocked() { 1396 return mBootCompleted && !isBeingKeptAwakeLocked(); 1397 } 1398 1399 /** 1400 * Returns true if the device is being kept awake by a wake lock, user activity 1401 * or the stay on while powered setting. We also keep the phone awake when 1402 * the proximity sensor returns a positive result so that the device does not 1403 * lock while in a phone call. This function only controls whether the device 1404 * will go to sleep or dream which is independent of whether it will be allowed 1405 * to suspend. 1406 */ 1407 private boolean isBeingKeptAwakeLocked() { 1408 return mStayOn 1409 || mProximityPositive 1410 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1411 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1412 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1413 } 1414 1415 /** 1416 * Determines whether to post a message to the sandman to update the dream state. 1417 */ 1418 private void updateDreamLocked(int dirty) { 1419 if ((dirty & (DIRTY_WAKEFULNESS 1420 | DIRTY_USER_ACTIVITY 1421 | DIRTY_WAKE_LOCKS 1422 | DIRTY_BOOT_COMPLETED 1423 | DIRTY_SETTINGS 1424 | DIRTY_IS_POWERED 1425 | DIRTY_STAY_ON 1426 | DIRTY_PROXIMITY_POSITIVE 1427 | DIRTY_BATTERY_STATE)) != 0) { 1428 scheduleSandmanLocked(); 1429 } 1430 } 1431 1432 private void scheduleSandmanLocked() { 1433 if (!mSandmanScheduled) { 1434 mSandmanScheduled = true; 1435 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1436 msg.setAsynchronous(true); 1437 mHandler.sendMessage(msg); 1438 } 1439 } 1440 1441 /** 1442 * Called when the device enters or exits a dreaming or dozing state. 1443 * 1444 * We do this asynchronously because we must call out of the power manager to start 1445 * the dream and we don't want to hold our lock while doing so. There is a risk that 1446 * the device will wake or go to sleep in the meantime so we have to handle that case. 1447 */ 1448 private void handleSandman() { // runs on handler thread 1449 // Handle preconditions. 1450 final boolean startDreaming; 1451 final int wakefulness; 1452 synchronized (mLock) { 1453 mSandmanScheduled = false; 1454 wakefulness = mWakefulness; 1455 if (mSandmanSummoned) { 1456 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1457 || wakefulness == WAKEFULNESS_DOZING); 1458 mSandmanSummoned = false; 1459 } else { 1460 startDreaming = false; 1461 } 1462 } 1463 1464 // Start dreaming if needed. 1465 // We only control the dream on the handler thread, so we don't need to worry about 1466 // concurrent attempts to start or stop the dream. 1467 final boolean isDreaming; 1468 if (mDreamManager != null) { 1469 // Restart the dream whenever the sandman is summoned. 1470 if (startDreaming) { 1471 mDreamManager.stopDream(); 1472 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1473 } 1474 isDreaming = mDreamManager.isDreaming(); 1475 } else { 1476 isDreaming = false; 1477 } 1478 1479 // Update dream state. 1480 synchronized (mLock) { 1481 // Remember the initial battery level when the dream started. 1482 if (startDreaming && isDreaming) { 1483 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1484 if (wakefulness == WAKEFULNESS_DOZING) { 1485 Slog.i(TAG, "Dozing..."); 1486 } else { 1487 Slog.i(TAG, "Dreaming..."); 1488 } 1489 } 1490 1491 // If preconditions changed, wait for the next iteration to determine 1492 // whether the dream should continue (or be restarted). 1493 if (mSandmanSummoned || mWakefulness != wakefulness) { 1494 return; // wait for next cycle 1495 } 1496 1497 // Determine whether the dream should continue. 1498 if (wakefulness == WAKEFULNESS_DREAMING) { 1499 if (isDreaming && canDreamLocked()) { 1500 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1501 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1502 - mDreamsBatteryLevelDrainCutoffConfig 1503 && !isBeingKeptAwakeLocked()) { 1504 // If the user activity timeout expired and the battery appears 1505 // to be draining faster than it is charging then stop dreaming 1506 // and go to sleep. 1507 Slog.i(TAG, "Stopping dream because the battery appears to " 1508 + "be draining faster than it is charging. " 1509 + "Battery level when dream started: " 1510 + mBatteryLevelWhenDreamStarted + "%. " 1511 + "Battery level now: " + mBatteryLevel + "%."); 1512 } else { 1513 return; // continue dreaming 1514 } 1515 } 1516 1517 // Dream has ended or will be stopped. Update the power state. 1518 if (isItBedTimeYetLocked()) { 1519 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1520 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1521 updatePowerStateLocked(); 1522 } else { 1523 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1524 updatePowerStateLocked(); 1525 } 1526 } else if (wakefulness == WAKEFULNESS_DOZING) { 1527 if (isDreaming) { 1528 return; // continue dozing 1529 } 1530 1531 // Doze has ended or will be stopped. Update the power state. 1532 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1533 updatePowerStateLocked(); 1534 } 1535 } 1536 1537 // Stop dream. 1538 if (isDreaming) { 1539 mDreamManager.stopDream(); 1540 } 1541 } 1542 1543 /** 1544 * Returns true if the device is allowed to dream in its current state. 1545 * This function is not called when dozing. 1546 */ 1547 private boolean canDreamLocked() { 1548 if (mWakefulness != WAKEFULNESS_DREAMING 1549 || !mDreamsSupportedConfig 1550 || !mDreamsEnabledSetting 1551 || !mDisplayPowerRequest.wantScreenOnNormal() 1552 || !mBootCompleted) { 1553 return false; 1554 } 1555 if (!isBeingKeptAwakeLocked()) { 1556 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1557 return false; 1558 } 1559 if (!mIsPowered 1560 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1561 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1562 return false; 1563 } 1564 if (mIsPowered 1565 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1566 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1567 return false; 1568 } 1569 } 1570 return true; 1571 } 1572 1573 private void handleScreenOnBlockerReleased() { 1574 synchronized (mLock) { 1575 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1576 updatePowerStateLocked(); 1577 } 1578 } 1579 1580 /** 1581 * Updates the display power state asynchronously. 1582 * When the update is finished, mDisplayReady will be set to true. The display 1583 * controller posts a message to tell us when the actual display power state 1584 * has been updated so we come back here to double-check and finish up. 1585 * 1586 * This function recalculates the display power state each time. 1587 */ 1588 private void updateDisplayPowerStateLocked(int dirty) { 1589 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1590 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1591 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1592 final int newScreenState = getDesiredScreenPowerStateLocked(); 1593 if (newScreenState != mDisplayPowerRequest.screenState) { 1594 mDisplayPowerRequest.screenState = newScreenState; 1595 nativeSetPowerState( 1596 mDisplayPowerRequest.wantScreenOnNormal(), 1597 newScreenState == DisplayPowerRequest.SCREEN_STATE_BRIGHT); 1598 } 1599 1600 int screenBrightness = mScreenBrightnessSettingDefault; 1601 float screenAutoBrightnessAdjustment = 0.0f; 1602 boolean autoBrightness = (mScreenBrightnessModeSetting == 1603 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1604 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1605 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1606 autoBrightness = false; 1607 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1608 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1609 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1610 screenBrightness = mScreenBrightnessSetting; 1611 } 1612 if (autoBrightness) { 1613 screenBrightness = mScreenBrightnessSettingDefault; 1614 if (isValidAutoBrightnessAdjustment( 1615 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1616 screenAutoBrightnessAdjustment = 1617 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1618 } else if (isValidAutoBrightnessAdjustment( 1619 mScreenAutoBrightnessAdjustmentSetting)) { 1620 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1621 } 1622 } 1623 screenBrightness = Math.max(Math.min(screenBrightness, 1624 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1625 screenAutoBrightnessAdjustment = Math.max(Math.min( 1626 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1627 mDisplayPowerRequest.screenBrightness = screenBrightness; 1628 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1629 screenAutoBrightnessAdjustment; 1630 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1631 1632 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1633 1634 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1635 1636 mDisplayReady = mDisplayPowerController.requestPowerState(mDisplayPowerRequest, 1637 mRequestWaitForNegativeProximity); 1638 mRequestWaitForNegativeProximity = false; 1639 1640 if (DEBUG_SPEW) { 1641 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1642 + ", newScreenState=" + newScreenState 1643 + ", mWakefulness=" + mWakefulness 1644 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1645 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1646 + ", mBootCompleted=" + mBootCompleted); 1647 } 1648 } 1649 } 1650 1651 private static boolean isValidBrightness(int value) { 1652 return value >= 0 && value <= 255; 1653 } 1654 1655 private static boolean isValidAutoBrightnessAdjustment(float value) { 1656 // Handles NaN by always returning false. 1657 return value >= -1.0f && value <= 1.0f; 1658 } 1659 1660 private int getDesiredScreenPowerStateLocked() { 1661 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1662 return DisplayPowerRequest.SCREEN_STATE_OFF; 1663 } 1664 1665 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1666 return DisplayPowerRequest.SCREEN_STATE_DOZE; 1667 } 1668 1669 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1670 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1671 || !mBootCompleted) { 1672 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1673 } 1674 1675 return DisplayPowerRequest.SCREEN_STATE_DIM; 1676 } 1677 1678 private final DisplayPowerController.Callbacks mDisplayPowerControllerCallbacks = 1679 new DisplayPowerController.Callbacks() { 1680 @Override 1681 public void onStateChanged() { 1682 synchronized (mLock) { 1683 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1684 updatePowerStateLocked(); 1685 } 1686 } 1687 1688 @Override 1689 public void onProximityPositive() { 1690 synchronized (mLock) { 1691 mProximityPositive = true; 1692 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1693 updatePowerStateLocked(); 1694 } 1695 } 1696 1697 @Override 1698 public void onProximityNegative() { 1699 synchronized (mLock) { 1700 mProximityPositive = false; 1701 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1702 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1703 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1704 updatePowerStateLocked(); 1705 } 1706 } 1707 }; 1708 1709 private boolean shouldUseProximitySensorLocked() { 1710 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1711 } 1712 1713 /** 1714 * Updates the suspend blocker that keeps the CPU alive. 1715 * 1716 * This function must have no other side-effects. 1717 */ 1718 private void updateSuspendBlockerLocked() { 1719 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1720 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1721 final boolean autoSuspend = !needDisplaySuspendBlocker; 1722 1723 // Disable auto-suspend if needed. 1724 if (!autoSuspend) { 1725 if (mDecoupleAutoSuspendModeFromDisplayConfig) { 1726 setAutoSuspendModeLocked(false); 1727 } 1728 if (mDecoupleInteractiveModeFromDisplayConfig) { 1729 setInteractiveModeLocked(true); 1730 } 1731 } 1732 1733 // First acquire suspend blockers if needed. 1734 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1735 mWakeLockSuspendBlocker.acquire(); 1736 mHoldingWakeLockSuspendBlocker = true; 1737 } 1738 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1739 mDisplaySuspendBlocker.acquire(); 1740 mHoldingDisplaySuspendBlocker = true; 1741 } 1742 1743 // Then release suspend blockers if needed. 1744 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1745 mWakeLockSuspendBlocker.release(); 1746 mHoldingWakeLockSuspendBlocker = false; 1747 } 1748 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1749 mDisplaySuspendBlocker.release(); 1750 mHoldingDisplaySuspendBlocker = false; 1751 } 1752 1753 // Enable auto-suspend if needed. 1754 if (autoSuspend) { 1755 if (mDecoupleInteractiveModeFromDisplayConfig) { 1756 setInteractiveModeLocked(false); 1757 } 1758 if (mDecoupleAutoSuspendModeFromDisplayConfig) { 1759 setAutoSuspendModeLocked(true); 1760 } 1761 } 1762 } 1763 1764 /** 1765 * Return true if we must keep a suspend blocker active on behalf of the display. 1766 * We do so if the screen is on or is in transition between states. 1767 */ 1768 private boolean needDisplaySuspendBlockerLocked() { 1769 if (!mDisplayReady) { 1770 return true; 1771 } 1772 if (mDisplayPowerRequest.wantScreenOnNormal()) { 1773 // If we asked for the screen to be on but it is off due to the proximity 1774 // sensor then we may suspend but only if the configuration allows it. 1775 // On some hardware it may not be safe to suspend because the proximity 1776 // sensor may not be correctly configured as a wake-up source. 1777 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1778 || !mSuspendWhenScreenOffDueToProximityConfig) { 1779 return true; 1780 } 1781 } 1782 // Let the system suspend if the screen is off or dozing. 1783 return false; 1784 } 1785 1786 private void setAutoSuspendModeLocked(boolean enable) { 1787 if (enable != mAutoSuspendModeEnabled) { 1788 if (DEBUG) { 1789 Slog.d(TAG, "Setting auto-suspend mode to " + enable); 1790 } 1791 mAutoSuspendModeEnabled = enable; 1792 nativeSetAutoSuspend(enable); 1793 } 1794 } 1795 1796 private void setInteractiveModeLocked(boolean enable) { 1797 if (enable != mInteractiveModeEnabled) { 1798 if (DEBUG) { 1799 Slog.d(TAG, "Setting interactive mode to " + enable); 1800 } 1801 mInteractiveModeEnabled = enable; 1802 nativeSetInteractive(enable); 1803 } 1804 } 1805 1806 private boolean isScreenOnInternal() { 1807 synchronized (mLock) { 1808 return !mSystemReady 1809 || mDisplayPowerRequest.wantScreenOnNormal(); 1810 } 1811 } 1812 1813 private void handleBatteryStateChangedLocked() { 1814 mDirty |= DIRTY_BATTERY_STATE; 1815 updatePowerStateLocked(); 1816 } 1817 1818 private void startWatchingForBootAnimationFinished() { 1819 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1820 } 1821 1822 private void checkIfBootAnimationFinished() { 1823 if (DEBUG) { 1824 Slog.d(TAG, "Check if boot animation finished..."); 1825 } 1826 1827 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1828 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1829 BOOT_ANIMATION_POLL_INTERVAL); 1830 return; 1831 } 1832 1833 synchronized (mLock) { 1834 if (!mBootCompleted) { 1835 Slog.i(TAG, "Boot animation finished."); 1836 handleBootCompletedLocked(); 1837 } 1838 } 1839 } 1840 1841 private void handleBootCompletedLocked() { 1842 final long now = SystemClock.uptimeMillis(); 1843 mBootCompleted = true; 1844 mDirty |= DIRTY_BOOT_COMPLETED; 1845 userActivityNoUpdateLocked( 1846 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1847 updatePowerStateLocked(); 1848 } 1849 1850 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1851 final String reason, boolean wait) { 1852 if (mHandler == null || !mSystemReady) { 1853 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1854 } 1855 1856 Runnable runnable = new Runnable() { 1857 @Override 1858 public void run() { 1859 synchronized (this) { 1860 if (shutdown) { 1861 ShutdownThread.shutdown(mContext, confirm); 1862 } else { 1863 ShutdownThread.reboot(mContext, reason, confirm); 1864 } 1865 } 1866 } 1867 }; 1868 1869 // ShutdownThread must run on a looper capable of displaying the UI. 1870 Message msg = Message.obtain(mHandler, runnable); 1871 msg.setAsynchronous(true); 1872 mHandler.sendMessage(msg); 1873 1874 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 1875 if (wait) { 1876 synchronized (runnable) { 1877 while (true) { 1878 try { 1879 runnable.wait(); 1880 } catch (InterruptedException e) { 1881 } 1882 } 1883 } 1884 } 1885 } 1886 1887 private void crashInternal(final String message) { 1888 Thread t = new Thread("PowerManagerService.crash()") { 1889 @Override 1890 public void run() { 1891 throw new RuntimeException(message); 1892 } 1893 }; 1894 try { 1895 t.start(); 1896 t.join(); 1897 } catch (InterruptedException e) { 1898 Log.wtf(TAG, e); 1899 } 1900 } 1901 1902 private void setStayOnSettingInternal(int val) { 1903 Settings.Global.putInt(mContext.getContentResolver(), 1904 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 1905 } 1906 1907 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 1908 synchronized (mLock) { 1909 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 1910 mDirty |= DIRTY_SETTINGS; 1911 updatePowerStateLocked(); 1912 } 1913 } 1914 1915 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 1916 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 1917 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 1918 } 1919 1920 private void setAttentionLightInternal(boolean on, int color) { 1921 Light light; 1922 synchronized (mLock) { 1923 if (!mSystemReady) { 1924 return; 1925 } 1926 light = mAttentionLight; 1927 } 1928 1929 // Control light outside of lock. 1930 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 1931 } 1932 1933 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 1934 synchronized (mLock) { 1935 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 1936 mScreenBrightnessOverrideFromWindowManager = brightness; 1937 mDirty |= DIRTY_SETTINGS; 1938 updatePowerStateLocked(); 1939 } 1940 } 1941 } 1942 1943 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 1944 synchronized (mLock) { 1945 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 1946 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 1947 mDirty |= DIRTY_SETTINGS; 1948 updatePowerStateLocked(); 1949 } 1950 } 1951 } 1952 1953 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 1954 synchronized (mLock) { 1955 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 1956 mTemporaryScreenBrightnessSettingOverride = brightness; 1957 mDirty |= DIRTY_SETTINGS; 1958 updatePowerStateLocked(); 1959 } 1960 } 1961 } 1962 1963 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 1964 synchronized (mLock) { 1965 // Note: This condition handles NaN because NaN is not equal to any other 1966 // value, including itself. 1967 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 1968 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 1969 mDirty |= DIRTY_SETTINGS; 1970 updatePowerStateLocked(); 1971 } 1972 } 1973 } 1974 1975 /** 1976 * Low-level function turn the device off immediately, without trying 1977 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 1978 */ 1979 public static void lowLevelShutdown() { 1980 SystemProperties.set("sys.powerctl", "shutdown"); 1981 } 1982 1983 /** 1984 * Low-level function to reboot the device. On success, this function 1985 * doesn't return. If more than 5 seconds passes from the time, 1986 * a reboot is requested, this method returns. 1987 * 1988 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 1989 */ 1990 public static void lowLevelReboot(String reason) { 1991 if (reason == null) { 1992 reason = ""; 1993 } 1994 SystemProperties.set("sys.powerctl", "reboot," + reason); 1995 try { 1996 Thread.sleep(20000); 1997 } catch (InterruptedException e) { 1998 Thread.currentThread().interrupt(); 1999 } 2000 } 2001 2002 @Override // Watchdog.Monitor implementation 2003 public void monitor() { 2004 // Grab and release lock for watchdog monitor to detect deadlocks. 2005 synchronized (mLock) { 2006 } 2007 } 2008 2009 private void dumpInternal(PrintWriter pw) { 2010 pw.println("POWER MANAGER (dumpsys power)\n"); 2011 2012 final DisplayPowerController dpc; 2013 final WirelessChargerDetector wcd; 2014 synchronized (mLock) { 2015 pw.println("Power Manager State:"); 2016 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2017 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2018 pw.println(" mIsPowered=" + mIsPowered); 2019 pw.println(" mPlugType=" + mPlugType); 2020 pw.println(" mBatteryLevel=" + mBatteryLevel); 2021 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2022 pw.println(" mDockState=" + mDockState); 2023 pw.println(" mStayOn=" + mStayOn); 2024 pw.println(" mProximityPositive=" + mProximityPositive); 2025 pw.println(" mBootCompleted=" + mBootCompleted); 2026 pw.println(" mSystemReady=" + mSystemReady); 2027 pw.println(" mAutoSuspendModeEnabled=" + mAutoSuspendModeEnabled); 2028 pw.println(" mInteactiveModeEnabled=" + mInteractiveModeEnabled); 2029 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2030 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2031 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2032 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2033 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2034 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2035 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2036 pw.println(" mSendWakeUpFinishedNotificationWhenReady=" 2037 + mSendWakeUpFinishedNotificationWhenReady); 2038 pw.println(" mSendGoToSleepFinishedNotificationWhenReady=" 2039 + mSendGoToSleepFinishedNotificationWhenReady); 2040 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2041 pw.println(" mLastUserActivityTimeNoChangeLights=" 2042 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2043 pw.println(" mDisplayReady=" + mDisplayReady); 2044 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2045 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2046 2047 pw.println(); 2048 pw.println("Settings and Configuration:"); 2049 pw.println(" mDecoupleAutoSuspendModeFromDisplayConfig=" 2050 + mDecoupleAutoSuspendModeFromDisplayConfig); 2051 pw.println(" mDecoupleInteractiveModeFromDisplayConfig=" 2052 + mDecoupleInteractiveModeFromDisplayConfig); 2053 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2054 + mWakeUpWhenPluggedOrUnpluggedConfig); 2055 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2056 + mSuspendWhenScreenOffDueToProximityConfig); 2057 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2058 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2059 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2060 + mDreamsActivatedOnSleepByDefaultConfig); 2061 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2062 + mDreamsActivatedOnDockByDefaultConfig); 2063 pw.println(" mDreamsEnabledOnBatteryConfig=" 2064 + mDreamsEnabledOnBatteryConfig); 2065 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2066 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2067 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2068 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2069 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2070 + mDreamsBatteryLevelDrainCutoffConfig); 2071 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2072 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2073 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2074 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2075 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2076 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2077 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2078 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2079 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2080 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2081 + mScreenAutoBrightnessAdjustmentSetting); 2082 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2083 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2084 + mScreenBrightnessOverrideFromWindowManager); 2085 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2086 + mUserActivityTimeoutOverrideFromWindowManager); 2087 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2088 + mTemporaryScreenBrightnessSettingOverride); 2089 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2090 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2091 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2092 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2093 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2094 2095 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2096 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2097 pw.println(); 2098 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2099 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2100 2101 pw.println(); 2102 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2103 for (WakeLock wl : mWakeLocks) { 2104 pw.println(" " + wl); 2105 } 2106 2107 pw.println(); 2108 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2109 for (SuspendBlocker sb : mSuspendBlockers) { 2110 pw.println(" " + sb); 2111 } 2112 2113 pw.println(); 2114 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2115 2116 pw.println(); 2117 pw.println("Display Blanker: " + mDisplayBlanker); 2118 2119 dpc = mDisplayPowerController; 2120 wcd = mWirelessChargerDetector; 2121 } 2122 2123 if (dpc != null) { 2124 dpc.dump(pw); 2125 } 2126 2127 if (wcd != null) { 2128 wcd.dump(pw); 2129 } 2130 } 2131 2132 private SuspendBlocker createSuspendBlockerLocked(String name) { 2133 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2134 mSuspendBlockers.add(suspendBlocker); 2135 return suspendBlocker; 2136 } 2137 2138 private static String wakefulnessToString(int wakefulness) { 2139 switch (wakefulness) { 2140 case WAKEFULNESS_ASLEEP: 2141 return "Asleep"; 2142 case WAKEFULNESS_AWAKE: 2143 return "Awake"; 2144 case WAKEFULNESS_DREAMING: 2145 return "Dreaming"; 2146 case WAKEFULNESS_DOZING: 2147 return "Dozing"; 2148 default: 2149 return Integer.toString(wakefulness); 2150 } 2151 } 2152 2153 private static WorkSource copyWorkSource(WorkSource workSource) { 2154 return workSource != null ? new WorkSource(workSource) : null; 2155 } 2156 2157 private final class BatteryReceiver extends BroadcastReceiver { 2158 @Override 2159 public void onReceive(Context context, Intent intent) { 2160 synchronized (mLock) { 2161 handleBatteryStateChangedLocked(); 2162 } 2163 } 2164 } 2165 2166 private final class BootCompletedReceiver extends BroadcastReceiver { 2167 @Override 2168 public void onReceive(Context context, Intent intent) { 2169 // This is our early signal that the system thinks it has finished booting. 2170 // However, the boot animation may still be running for a few more seconds 2171 // since it is ultimately in charge of when it terminates. 2172 // Defer transitioning into the boot completed state until the animation exits. 2173 // We do this so that the screen does not start to dim prematurely before 2174 // the user has actually had a chance to interact with the device. 2175 startWatchingForBootAnimationFinished(); 2176 } 2177 } 2178 2179 private final class DreamReceiver extends BroadcastReceiver { 2180 @Override 2181 public void onReceive(Context context, Intent intent) { 2182 synchronized (mLock) { 2183 scheduleSandmanLocked(); 2184 } 2185 } 2186 } 2187 2188 private final class UserSwitchedReceiver extends BroadcastReceiver { 2189 @Override 2190 public void onReceive(Context context, Intent intent) { 2191 synchronized (mLock) { 2192 handleSettingsChangedLocked(); 2193 } 2194 } 2195 } 2196 2197 private final class DockReceiver extends BroadcastReceiver { 2198 @Override 2199 public void onReceive(Context context, Intent intent) { 2200 synchronized (mLock) { 2201 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2202 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2203 if (mDockState != dockState) { 2204 mDockState = dockState; 2205 mDirty |= DIRTY_DOCK_STATE; 2206 updatePowerStateLocked(); 2207 } 2208 } 2209 } 2210 } 2211 2212 private final class SettingsObserver extends ContentObserver { 2213 public SettingsObserver(Handler handler) { 2214 super(handler); 2215 } 2216 2217 @Override 2218 public void onChange(boolean selfChange, Uri uri) { 2219 synchronized (mLock) { 2220 handleSettingsChangedLocked(); 2221 } 2222 } 2223 } 2224 2225 /** 2226 * Handler for asynchronous operations performed by the power manager. 2227 */ 2228 private final class PowerManagerHandler extends Handler { 2229 public PowerManagerHandler(Looper looper) { 2230 super(looper, null, true /*async*/); 2231 } 2232 2233 @Override 2234 public void handleMessage(Message msg) { 2235 switch (msg.what) { 2236 case MSG_USER_ACTIVITY_TIMEOUT: 2237 handleUserActivityTimeout(); 2238 break; 2239 case MSG_SANDMAN: 2240 handleSandman(); 2241 break; 2242 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2243 handleScreenOnBlockerReleased(); 2244 break; 2245 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2246 checkIfBootAnimationFinished(); 2247 break; 2248 } 2249 } 2250 } 2251 2252 /** 2253 * Represents a wake lock that has been acquired by an application. 2254 */ 2255 private final class WakeLock implements IBinder.DeathRecipient { 2256 public final IBinder mLock; 2257 public int mFlags; 2258 public String mTag; 2259 public final String mPackageName; 2260 public WorkSource mWorkSource; 2261 public final int mOwnerUid; 2262 public final int mOwnerPid; 2263 public boolean mNotifiedAcquired; 2264 2265 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2266 WorkSource workSource, int ownerUid, int ownerPid) { 2267 mLock = lock; 2268 mFlags = flags; 2269 mTag = tag; 2270 mPackageName = packageName; 2271 mWorkSource = copyWorkSource(workSource); 2272 mOwnerUid = ownerUid; 2273 mOwnerPid = ownerPid; 2274 } 2275 2276 @Override 2277 public void binderDied() { 2278 PowerManagerService.this.handleWakeLockDeath(this); 2279 } 2280 2281 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2282 int ownerUid, int ownerPid) { 2283 return mFlags == flags 2284 && mTag.equals(tag) 2285 && hasSameWorkSource(workSource) 2286 && mOwnerUid == ownerUid 2287 && mOwnerPid == ownerPid; 2288 } 2289 2290 public void updateProperties(int flags, String tag, String packageName, 2291 WorkSource workSource, int ownerUid, int ownerPid) { 2292 if (!mPackageName.equals(packageName)) { 2293 throw new IllegalStateException("Existing wake lock package name changed: " 2294 + mPackageName + " to " + packageName); 2295 } 2296 if (mOwnerUid != ownerUid) { 2297 throw new IllegalStateException("Existing wake lock uid changed: " 2298 + mOwnerUid + " to " + ownerUid); 2299 } 2300 if (mOwnerPid != ownerPid) { 2301 throw new IllegalStateException("Existing wake lock pid changed: " 2302 + mOwnerPid + " to " + ownerPid); 2303 } 2304 mFlags = flags; 2305 mTag = tag; 2306 updateWorkSource(workSource); 2307 } 2308 2309 public boolean hasSameWorkSource(WorkSource workSource) { 2310 return Objects.equal(mWorkSource, workSource); 2311 } 2312 2313 public void updateWorkSource(WorkSource workSource) { 2314 mWorkSource = copyWorkSource(workSource); 2315 } 2316 2317 @Override 2318 public String toString() { 2319 return getLockLevelString() 2320 + " '" + mTag + "'" + getLockFlagsString() 2321 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2322 } 2323 2324 @SuppressWarnings("deprecation") 2325 private String getLockLevelString() { 2326 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2327 case PowerManager.FULL_WAKE_LOCK: 2328 return "FULL_WAKE_LOCK "; 2329 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2330 return "SCREEN_BRIGHT_WAKE_LOCK "; 2331 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2332 return "SCREEN_DIM_WAKE_LOCK "; 2333 case PowerManager.PARTIAL_WAKE_LOCK: 2334 return "PARTIAL_WAKE_LOCK "; 2335 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2336 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2337 case PowerManager.DOZE_WAKE_LOCK: 2338 return "DOZE_WAKE_LOCK "; 2339 default: 2340 return "??? "; 2341 } 2342 } 2343 2344 private String getLockFlagsString() { 2345 String result = ""; 2346 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2347 result += " ACQUIRE_CAUSES_WAKEUP"; 2348 } 2349 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2350 result += " ON_AFTER_RELEASE"; 2351 } 2352 return result; 2353 } 2354 } 2355 2356 private final class SuspendBlockerImpl implements SuspendBlocker { 2357 private final String mName; 2358 private int mReferenceCount; 2359 2360 public SuspendBlockerImpl(String name) { 2361 mName = name; 2362 } 2363 2364 @Override 2365 protected void finalize() throws Throwable { 2366 try { 2367 if (mReferenceCount != 0) { 2368 Log.wtf(TAG, "Suspend blocker \"" + mName 2369 + "\" was finalized without being released!"); 2370 mReferenceCount = 0; 2371 nativeReleaseSuspendBlocker(mName); 2372 } 2373 } finally { 2374 super.finalize(); 2375 } 2376 } 2377 2378 @Override 2379 public void acquire() { 2380 synchronized (this) { 2381 mReferenceCount += 1; 2382 if (mReferenceCount == 1) { 2383 if (DEBUG_SPEW) { 2384 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2385 } 2386 nativeAcquireSuspendBlocker(mName); 2387 } 2388 } 2389 } 2390 2391 @Override 2392 public void release() { 2393 synchronized (this) { 2394 mReferenceCount -= 1; 2395 if (mReferenceCount == 0) { 2396 if (DEBUG_SPEW) { 2397 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2398 } 2399 nativeReleaseSuspendBlocker(mName); 2400 } else if (mReferenceCount < 0) { 2401 Log.wtf(TAG, "Suspend blocker \"" + mName 2402 + "\" was released without being acquired!", new Throwable()); 2403 mReferenceCount = 0; 2404 } 2405 } 2406 } 2407 2408 @Override 2409 public String toString() { 2410 synchronized (this) { 2411 return mName + ": ref count=" + mReferenceCount; 2412 } 2413 } 2414 } 2415 2416 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2417 private int mNestCount; 2418 2419 public boolean isHeld() { 2420 synchronized (this) { 2421 return mNestCount != 0; 2422 } 2423 } 2424 2425 @Override 2426 public void acquire() { 2427 synchronized (this) { 2428 mNestCount += 1; 2429 if (DEBUG) { 2430 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2431 } 2432 } 2433 } 2434 2435 @Override 2436 public void release() { 2437 synchronized (this) { 2438 mNestCount -= 1; 2439 if (mNestCount < 0) { 2440 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2441 new Throwable()); 2442 mNestCount = 0; 2443 } 2444 if (mNestCount == 0) { 2445 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2446 } 2447 if (DEBUG) { 2448 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2449 } 2450 } 2451 } 2452 2453 @Override 2454 public String toString() { 2455 synchronized (this) { 2456 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2457 } 2458 } 2459 } 2460 2461 private final class DisplayBlankerImpl implements DisplayBlanker { 2462 private boolean mBlanked; 2463 2464 @Override 2465 public void blankAllDisplays() { 2466 synchronized (this) { 2467 mBlanked = true; 2468 mDisplayManagerInternal.blankAllDisplaysFromPowerManager(); 2469 if (!mDecoupleInteractiveModeFromDisplayConfig) { 2470 setInteractiveModeLocked(false); 2471 } 2472 if (!mDecoupleAutoSuspendModeFromDisplayConfig) { 2473 setAutoSuspendModeLocked(true); 2474 } 2475 } 2476 } 2477 2478 @Override 2479 public void unblankAllDisplays() { 2480 synchronized (this) { 2481 if (!mDecoupleAutoSuspendModeFromDisplayConfig) { 2482 setAutoSuspendModeLocked(false); 2483 } 2484 if (!mDecoupleInteractiveModeFromDisplayConfig) { 2485 setInteractiveModeLocked(true); 2486 } 2487 mDisplayManagerInternal.unblankAllDisplaysFromPowerManager(); 2488 mBlanked = false; 2489 } 2490 } 2491 2492 @Override 2493 public String toString() { 2494 synchronized (this) { 2495 return "blanked=" + mBlanked; 2496 } 2497 } 2498 } 2499 2500 private final class BinderService extends IPowerManager.Stub { 2501 @Override // Binder call 2502 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2503 String packageName, int uid) { 2504 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid)); 2505 } 2506 2507 @Override // Binder call 2508 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2509 WorkSource ws) { 2510 if (lock == null) { 2511 throw new IllegalArgumentException("lock must not be null"); 2512 } 2513 if (packageName == null) { 2514 throw new IllegalArgumentException("packageName must not be null"); 2515 } 2516 PowerManager.validateWakeLockParameters(flags, tag); 2517 2518 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2519 if (ws != null && ws.size() != 0) { 2520 mContext.enforceCallingOrSelfPermission( 2521 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2522 } else { 2523 ws = null; 2524 } 2525 2526 final int uid = Binder.getCallingUid(); 2527 final int pid = Binder.getCallingPid(); 2528 final long ident = Binder.clearCallingIdentity(); 2529 try { 2530 acquireWakeLockInternal(lock, flags, tag, packageName, ws, uid, pid); 2531 } finally { 2532 Binder.restoreCallingIdentity(ident); 2533 } 2534 } 2535 2536 @Override // Binder call 2537 public void releaseWakeLock(IBinder lock, int flags) { 2538 if (lock == null) { 2539 throw new IllegalArgumentException("lock must not be null"); 2540 } 2541 2542 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2543 2544 final long ident = Binder.clearCallingIdentity(); 2545 try { 2546 releaseWakeLockInternal(lock, flags); 2547 } finally { 2548 Binder.restoreCallingIdentity(ident); 2549 } 2550 } 2551 2552 @Override // Binder call 2553 public void updateWakeLockUids(IBinder lock, int[] uids) { 2554 WorkSource ws = null; 2555 2556 if (uids != null) { 2557 ws = new WorkSource(); 2558 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2559 // one at a time? 2560 for (int i = 0; i < uids.length; i++) { 2561 ws.add(uids[i]); 2562 } 2563 } 2564 updateWakeLockWorkSource(lock, ws); 2565 } 2566 2567 @Override // Binder call 2568 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws) { 2569 if (lock == null) { 2570 throw new IllegalArgumentException("lock must not be null"); 2571 } 2572 2573 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2574 if (ws != null && ws.size() != 0) { 2575 mContext.enforceCallingOrSelfPermission( 2576 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2577 } else { 2578 ws = null; 2579 } 2580 2581 final long ident = Binder.clearCallingIdentity(); 2582 try { 2583 updateWakeLockWorkSourceInternal(lock, ws); 2584 } finally { 2585 Binder.restoreCallingIdentity(ident); 2586 } 2587 } 2588 2589 @Override // Binder call 2590 public boolean isWakeLockLevelSupported(int level) { 2591 final long ident = Binder.clearCallingIdentity(); 2592 try { 2593 return isWakeLockLevelSupportedInternal(level); 2594 } finally { 2595 Binder.restoreCallingIdentity(ident); 2596 } 2597 } 2598 2599 @Override // Binder call 2600 public void userActivity(long eventTime, int event, int flags) { 2601 final long now = SystemClock.uptimeMillis(); 2602 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2603 != PackageManager.PERMISSION_GRANTED) { 2604 // Once upon a time applications could call userActivity(). 2605 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2606 // request instead of throwing a SecurityException so we don't break old apps. 2607 synchronized (mLock) { 2608 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2609 mLastWarningAboutUserActivityPermission = now; 2610 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2611 + "caller does not have DEVICE_POWER permission. " 2612 + "Please fix your app! " 2613 + " pid=" + Binder.getCallingPid() 2614 + " uid=" + Binder.getCallingUid()); 2615 } 2616 } 2617 return; 2618 } 2619 2620 if (eventTime > SystemClock.uptimeMillis()) { 2621 throw new IllegalArgumentException("event time must not be in the future"); 2622 } 2623 2624 final int uid = Binder.getCallingUid(); 2625 final long ident = Binder.clearCallingIdentity(); 2626 try { 2627 userActivityInternal(eventTime, event, flags, uid); 2628 } finally { 2629 Binder.restoreCallingIdentity(ident); 2630 } 2631 } 2632 2633 @Override // Binder call 2634 public void wakeUp(long eventTime) { 2635 if (eventTime > SystemClock.uptimeMillis()) { 2636 throw new IllegalArgumentException("event time must not be in the future"); 2637 } 2638 2639 mContext.enforceCallingOrSelfPermission( 2640 android.Manifest.permission.DEVICE_POWER, null); 2641 2642 final long ident = Binder.clearCallingIdentity(); 2643 try { 2644 wakeUpInternal(eventTime); 2645 } finally { 2646 Binder.restoreCallingIdentity(ident); 2647 } 2648 } 2649 2650 @Override // Binder call 2651 public void goToSleep(long eventTime, int reason) { 2652 if (eventTime > SystemClock.uptimeMillis()) { 2653 throw new IllegalArgumentException("event time must not be in the future"); 2654 } 2655 2656 mContext.enforceCallingOrSelfPermission( 2657 android.Manifest.permission.DEVICE_POWER, null); 2658 2659 final long ident = Binder.clearCallingIdentity(); 2660 try { 2661 goToSleepInternal(eventTime, reason); 2662 } finally { 2663 Binder.restoreCallingIdentity(ident); 2664 } 2665 } 2666 2667 @Override // Binder call 2668 public void nap(long eventTime) { 2669 if (eventTime > SystemClock.uptimeMillis()) { 2670 throw new IllegalArgumentException("event time must not be in the future"); 2671 } 2672 2673 mContext.enforceCallingOrSelfPermission( 2674 android.Manifest.permission.DEVICE_POWER, null); 2675 2676 final long ident = Binder.clearCallingIdentity(); 2677 try { 2678 napInternal(eventTime); 2679 } finally { 2680 Binder.restoreCallingIdentity(ident); 2681 } 2682 } 2683 2684 @Override // Binder call 2685 public boolean isScreenOn() { 2686 final long ident = Binder.clearCallingIdentity(); 2687 try { 2688 return isScreenOnInternal(); 2689 } finally { 2690 Binder.restoreCallingIdentity(ident); 2691 } 2692 } 2693 2694 /** 2695 * Reboots the device. 2696 * 2697 * @param confirm If true, shows a reboot confirmation dialog. 2698 * @param reason The reason for the reboot, or null if none. 2699 * @param wait If true, this call waits for the reboot to complete and does not return. 2700 */ 2701 @Override // Binder call 2702 public void reboot(boolean confirm, String reason, boolean wait) { 2703 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2704 2705 final long ident = Binder.clearCallingIdentity(); 2706 try { 2707 shutdownOrRebootInternal(false, confirm, reason, wait); 2708 } finally { 2709 Binder.restoreCallingIdentity(ident); 2710 } 2711 } 2712 2713 /** 2714 * Shuts down the device. 2715 * 2716 * @param confirm If true, shows a shutdown confirmation dialog. 2717 * @param wait If true, this call waits for the shutdown to complete and does not return. 2718 */ 2719 @Override // Binder call 2720 public void shutdown(boolean confirm, boolean wait) { 2721 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2722 2723 final long ident = Binder.clearCallingIdentity(); 2724 try { 2725 shutdownOrRebootInternal(true, confirm, null, wait); 2726 } finally { 2727 Binder.restoreCallingIdentity(ident); 2728 } 2729 } 2730 2731 /** 2732 * Crash the runtime (causing a complete restart of the Android framework). 2733 * Requires REBOOT permission. Mostly for testing. Should not return. 2734 */ 2735 @Override // Binder call 2736 public void crash(String message) { 2737 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2738 2739 final long ident = Binder.clearCallingIdentity(); 2740 try { 2741 crashInternal(message); 2742 } finally { 2743 Binder.restoreCallingIdentity(ident); 2744 } 2745 } 2746 2747 /** 2748 * Set the setting that determines whether the device stays on when plugged in. 2749 * The argument is a bit string, with each bit specifying a power source that, 2750 * when the device is connected to that source, causes the device to stay on. 2751 * See {@link android.os.BatteryManager} for the list of power sources that 2752 * can be specified. Current values include 2753 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2754 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2755 * 2756 * Used by "adb shell svc power stayon ..." 2757 * 2758 * @param val an {@code int} containing the bits that specify which power sources 2759 * should cause the device to stay on. 2760 */ 2761 @Override // Binder call 2762 public void setStayOnSetting(int val) { 2763 mContext.enforceCallingOrSelfPermission( 2764 android.Manifest.permission.WRITE_SETTINGS, null); 2765 2766 final long ident = Binder.clearCallingIdentity(); 2767 try { 2768 setStayOnSettingInternal(val); 2769 } finally { 2770 Binder.restoreCallingIdentity(ident); 2771 } 2772 } 2773 2774 /** 2775 * Used by device administration to set the maximum screen off timeout. 2776 * 2777 * This method must only be called by the device administration policy manager. 2778 */ 2779 @Override // Binder call 2780 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2781 final long ident = Binder.clearCallingIdentity(); 2782 try { 2783 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2784 } finally { 2785 Binder.restoreCallingIdentity(ident); 2786 } 2787 } 2788 2789 /** 2790 * Used by the settings application and brightness control widgets to 2791 * temporarily override the current screen brightness setting so that the 2792 * user can observe the effect of an intended settings change without applying 2793 * it immediately. 2794 * 2795 * The override will be canceled when the setting value is next updated. 2796 * 2797 * @param brightness The overridden brightness. 2798 * 2799 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2800 */ 2801 @Override // Binder call 2802 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2803 mContext.enforceCallingOrSelfPermission( 2804 android.Manifest.permission.DEVICE_POWER, null); 2805 2806 final long ident = Binder.clearCallingIdentity(); 2807 try { 2808 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2809 } finally { 2810 Binder.restoreCallingIdentity(ident); 2811 } 2812 } 2813 2814 /** 2815 * Used by the settings application and brightness control widgets to 2816 * temporarily override the current screen auto-brightness adjustment setting so that the 2817 * user can observe the effect of an intended settings change without applying 2818 * it immediately. 2819 * 2820 * The override will be canceled when the setting value is next updated. 2821 * 2822 * @param adj The overridden brightness, or Float.NaN to disable the override. 2823 * 2824 * @see Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2825 */ 2826 @Override // Binder call 2827 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2828 mContext.enforceCallingOrSelfPermission( 2829 android.Manifest.permission.DEVICE_POWER, null); 2830 2831 final long ident = Binder.clearCallingIdentity(); 2832 try { 2833 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2834 } finally { 2835 Binder.restoreCallingIdentity(ident); 2836 } 2837 } 2838 2839 /** 2840 * Used by the phone application to make the attention LED flash when ringing. 2841 */ 2842 @Override // Binder call 2843 public void setAttentionLight(boolean on, int color) { 2844 mContext.enforceCallingOrSelfPermission( 2845 android.Manifest.permission.DEVICE_POWER, null); 2846 2847 final long ident = Binder.clearCallingIdentity(); 2848 try { 2849 setAttentionLightInternal(on, color); 2850 } finally { 2851 Binder.restoreCallingIdentity(ident); 2852 } 2853 } 2854 2855 @Override // Binder call 2856 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2857 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2858 != PackageManager.PERMISSION_GRANTED) { 2859 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2860 + Binder.getCallingPid() 2861 + ", uid=" + Binder.getCallingUid()); 2862 return; 2863 } 2864 2865 final long ident = Binder.clearCallingIdentity(); 2866 try { 2867 dumpInternal(pw); 2868 } finally { 2869 Binder.restoreCallingIdentity(ident); 2870 } 2871 } 2872 } 2873 2874 private final class LocalService extends PowerManagerInternal { 2875 /** 2876 * Used by the window manager to override the screen brightness based on the 2877 * current foreground activity. 2878 * 2879 * This method must only be called by the window manager. 2880 * 2881 * @param brightness The overridden brightness, or -1 to disable the override. 2882 */ 2883 @Override 2884 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 2885 mContext.enforceCallingOrSelfPermission( 2886 android.Manifest.permission.DEVICE_POWER, null); 2887 2888 final long ident = Binder.clearCallingIdentity(); 2889 try { 2890 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 2891 } finally { 2892 Binder.restoreCallingIdentity(ident); 2893 } 2894 } 2895 2896 /** 2897 * Used by the window manager to override the button brightness based on the 2898 * current foreground activity. 2899 * 2900 * This method must only be called by the window manager. 2901 * 2902 * @param brightness The overridden brightness, or -1 to disable the override. 2903 */ 2904 @Override 2905 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 2906 // Do nothing. 2907 // Button lights are not currently supported in the new implementation. 2908 mContext.enforceCallingOrSelfPermission( 2909 android.Manifest.permission.DEVICE_POWER, null); 2910 } 2911 2912 /** 2913 * Used by the window manager to override the user activity timeout based on the 2914 * current foreground activity. It can only be used to make the timeout shorter 2915 * than usual, not longer. 2916 * 2917 * This method must only be called by the window manager. 2918 * 2919 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 2920 */ 2921 @Override 2922 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 2923 mContext.enforceCallingOrSelfPermission( 2924 android.Manifest.permission.DEVICE_POWER, null); 2925 2926 final long ident = Binder.clearCallingIdentity(); 2927 try { 2928 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 2929 } finally { 2930 Binder.restoreCallingIdentity(ident); 2931 } 2932 } 2933 2934 @Override 2935 public void setPolicy(WindowManagerPolicy policy) { 2936 PowerManagerService.this.setPolicy(policy); 2937 } 2938 } 2939} 2940