PowerManagerService.java revision d83a096f299abd9c7fe5e441ef1bb169c314b575
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.power; 18 19import com.android.internal.app.IAppOpsService; 20import com.android.internal.app.IBatteryStats; 21import com.android.server.BatteryService; 22import com.android.server.EventLogTags; 23import com.android.server.LocalServices; 24import com.android.server.ServiceThread; 25import com.android.server.lights.Light; 26import com.android.server.lights.LightsManager; 27import com.android.server.Watchdog; 28 29import android.Manifest; 30import android.content.BroadcastReceiver; 31import android.content.ContentResolver; 32import android.content.Context; 33import android.content.Intent; 34import android.content.IntentFilter; 35import android.content.pm.PackageManager; 36import android.content.res.Resources; 37import android.database.ContentObserver; 38import android.hardware.SensorManager; 39import android.hardware.SystemSensorManager; 40import android.hardware.display.DisplayManagerInternal; 41import android.hardware.display.DisplayManagerInternal.DisplayPowerRequest; 42import android.net.Uri; 43import android.os.BatteryManager; 44import android.os.Binder; 45import android.os.Handler; 46import android.os.IBinder; 47import android.os.IPowerManager; 48import android.os.Looper; 49import android.os.Message; 50import android.os.PowerManager; 51import android.os.PowerManagerInternal; 52import android.os.Process; 53import android.os.RemoteException; 54import android.os.SystemClock; 55import android.os.SystemProperties; 56import android.os.SystemService; 57import android.os.UserHandle; 58import android.os.WorkSource; 59import android.provider.Settings; 60import android.service.dreams.DreamManagerInternal; 61import android.util.EventLog; 62import android.util.Log; 63import android.util.Slog; 64import android.util.TimeUtils; 65import android.view.Display; 66import android.view.WindowManagerPolicy; 67 68import java.io.FileDescriptor; 69import java.io.PrintWriter; 70import java.util.ArrayList; 71 72import libcore.util.Objects; 73 74/** 75 * The power manager service is responsible for coordinating power management 76 * functions on the device. 77 */ 78public final class PowerManagerService extends com.android.server.SystemService 79 implements Watchdog.Monitor { 80 private static final String TAG = "PowerManagerService"; 81 82 private static final boolean DEBUG = false; 83 private static final boolean DEBUG_SPEW = DEBUG && true; 84 85 // Message: Sent when a user activity timeout occurs to update the power state. 86 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 87 // Message: Sent when the device enters or exits a dreaming or dozing state. 88 private static final int MSG_SANDMAN = 2; 89 // Message: Sent when the screen on blocker is released. 90 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 91 // Message: Sent to poll whether the boot animation has terminated. 92 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 93 94 // Dirty bit: mWakeLocks changed 95 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 96 // Dirty bit: mWakefulness changed 97 private static final int DIRTY_WAKEFULNESS = 1 << 1; 98 // Dirty bit: user activity was poked or may have timed out 99 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 100 // Dirty bit: actual display power state was updated asynchronously 101 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 102 // Dirty bit: mBootCompleted changed 103 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 104 // Dirty bit: settings changed 105 private static final int DIRTY_SETTINGS = 1 << 5; 106 // Dirty bit: mIsPowered changed 107 private static final int DIRTY_IS_POWERED = 1 << 6; 108 // Dirty bit: mStayOn changed 109 private static final int DIRTY_STAY_ON = 1 << 7; 110 // Dirty bit: battery state changed 111 private static final int DIRTY_BATTERY_STATE = 1 << 8; 112 // Dirty bit: proximity state changed 113 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 114 // Dirty bit: screen on blocker state became held or unheld 115 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 116 // Dirty bit: dock state changed 117 private static final int DIRTY_DOCK_STATE = 1 << 11; 118 119 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 120 // The screen should be off or in the process of being turned off by the display controller. 121 // The device typically passes through the dozing state first. 122 private static final int WAKEFULNESS_ASLEEP = 0; 123 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 124 // When the user activity timeout expires, the device may start dreaming or go to sleep. 125 private static final int WAKEFULNESS_AWAKE = 1; 126 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 127 // which ends the dream. The device goes to sleep when goToSleep() is called, when 128 // the dream ends or when unplugged. 129 // User activity may brighten the screen but does not end the dream. 130 private static final int WAKEFULNESS_DREAMING = 2; 131 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 132 // low-power "doze" dream to run which keeps the display on but lets the application 133 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 134 // The device fully goes to sleep if the dream cannot be started or ends on its own. 135 private static final int WAKEFULNESS_DOZING = 3; 136 137 // Summarizes the state of all active wakelocks. 138 private static final int WAKE_LOCK_CPU = 1 << 0; 139 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 140 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 141 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 142 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 143 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 144 private static final int WAKE_LOCK_DOZE = 1 << 6; 145 146 // Summarizes the user activity state. 147 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 148 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 149 150 // Default and minimum screen off timeout in milliseconds. 151 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 152 private static final int MINIMUM_SCREEN_OFF_TIMEOUT = 10 * 1000; 153 154 // The screen dim duration, in milliseconds. 155 // This is subtracted from the end of the screen off timeout so the 156 // minimum screen off timeout should be longer than this. 157 private static final int SCREEN_DIM_DURATION = 7 * 1000; 158 159 // The maximum screen dim time expressed as a ratio relative to the screen 160 // off timeout. If the screen off timeout is very short then we want the 161 // dim timeout to also be quite short so that most of the time is spent on. 162 // Otherwise the user won't get much screen on time before dimming occurs. 163 private static final float MAXIMUM_SCREEN_DIM_RATIO = 0.2f; 164 165 // The name of the boot animation service in init.rc. 166 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 167 168 // Poll interval in milliseconds for watching boot animation finished. 169 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 170 171 //powerHint 172 private static final int POWER_HINT_LOW_POWER_MODE = 5; 173 private static boolean mLowPowerModeEnabled; 174 175 private final Context mContext; 176 private LightsManager mLightsManager; 177 private BatteryService mBatteryService; 178 private DisplayManagerInternal mDisplayManagerInternal; 179 private IBatteryStats mBatteryStats; 180 private IAppOpsService mAppOps; 181 private ServiceThread mHandlerThread; 182 private PowerManagerHandler mHandler; 183 private WindowManagerPolicy mPolicy; 184 private Notifier mNotifier; 185 private WirelessChargerDetector mWirelessChargerDetector; 186 private SettingsObserver mSettingsObserver; 187 private DreamManagerInternal mDreamManager; 188 private Light mAttentionLight; 189 190 private final Object mLock = new Object(); 191 192 // A bitfield that indicates what parts of the power state have 193 // changed and need to be recalculated. 194 private int mDirty; 195 196 // Indicates whether the device is awake or asleep or somewhere in between. 197 // This is distinct from the screen power state, which is managed separately. 198 private int mWakefulness; 199 200 // True if the sandman has just been summoned for the first time since entering the 201 // dreaming or dozing state. Indicates whether a new dream should begin. 202 private boolean mSandmanSummoned; 203 204 // True if MSG_SANDMAN has been scheduled. 205 private boolean mSandmanScheduled; 206 207 // Table of all suspend blockers. 208 // There should only be a few of these. 209 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 210 211 // Table of all wake locks acquired by applications. 212 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 213 214 // A bitfield that summarizes the state of all active wakelocks. 215 private int mWakeLockSummary; 216 217 // True if the device is in an interactive state. 218 private boolean mInteractive; 219 private boolean mInteractiveChanging; 220 221 // If true, instructs the display controller to wait for the proximity sensor to 222 // go negative before turning the screen on. 223 private boolean mRequestWaitForNegativeProximity; 224 225 // Timestamp of the last time the device was awoken or put to sleep. 226 private long mLastWakeTime; 227 private long mLastSleepTime; 228 229 // Timestamp of the last call to user activity. 230 private long mLastUserActivityTime; 231 private long mLastUserActivityTimeNoChangeLights; 232 233 // A bitfield that summarizes the effect of the user activity timer. 234 // A zero value indicates that the user activity timer has expired. 235 private int mUserActivitySummary; 236 237 // The desired display power state. The actual state may lag behind the 238 // requested because it is updated asynchronously by the display power controller. 239 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 240 241 // True if the display power state has been fully applied, which means the display 242 // is actually on or actually off or whatever was requested. 243 private boolean mDisplayReady; 244 245 // The suspend blocker used to keep the CPU alive when an application has acquired 246 // a wake lock. 247 private final SuspendBlocker mWakeLockSuspendBlocker; 248 249 // True if the wake lock suspend blocker has been acquired. 250 private boolean mHoldingWakeLockSuspendBlocker; 251 252 // The suspend blocker used to keep the CPU alive when the display is on, the 253 // display is getting ready or there is user activity (in which case the display 254 // must be on). 255 private final SuspendBlocker mDisplaySuspendBlocker; 256 257 // True if the display suspend blocker has been acquired. 258 private boolean mHoldingDisplaySuspendBlocker; 259 260 // The screen on blocker used to keep the screen from turning on while the lock 261 // screen is coming up. 262 private final ScreenOnBlockerImpl mScreenOnBlocker; 263 264 // True if systemReady() has been called. 265 private boolean mSystemReady; 266 267 // True if boot completed occurred. We keep the screen on until this happens. 268 private boolean mBootCompleted; 269 270 // True if auto-suspend mode is enabled. 271 // Refer to autosuspend.h. 272 private boolean mHalAutoSuspendModeEnabled; 273 274 // True if interactive mode is enabled. 275 // Refer to power.h. 276 private boolean mHalInteractiveModeEnabled; 277 278 // True if the device is plugged into a power source. 279 private boolean mIsPowered; 280 281 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 282 private int mPlugType; 283 284 // The current battery level percentage. 285 private int mBatteryLevel; 286 287 // The battery level percentage at the time the dream started. 288 // This is used to terminate a dream and go to sleep if the battery is 289 // draining faster than it is charging and the user activity timeout has expired. 290 private int mBatteryLevelWhenDreamStarted; 291 292 // The current dock state. 293 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 294 295 // True to decouple auto-suspend mode from the display state. 296 private boolean mDecoupleHalAutoSuspendModeFromDisplayConfig; 297 298 // True to decouple interactive mode from the display state. 299 private boolean mDecoupleHalInteractiveModeFromDisplayConfig; 300 301 // True if the device should wake up when plugged or unplugged. 302 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 303 304 // True if the device should suspend when the screen is off due to proximity. 305 private boolean mSuspendWhenScreenOffDueToProximityConfig; 306 307 // True if dreams are supported on this device. 308 private boolean mDreamsSupportedConfig; 309 310 // Default value for dreams enabled 311 private boolean mDreamsEnabledByDefaultConfig; 312 313 // Default value for dreams activate-on-sleep 314 private boolean mDreamsActivatedOnSleepByDefaultConfig; 315 316 // Default value for dreams activate-on-dock 317 private boolean mDreamsActivatedOnDockByDefaultConfig; 318 319 // True if dreams can run while not plugged in. 320 private boolean mDreamsEnabledOnBatteryConfig; 321 322 // Minimum battery level to allow dreaming when powered. 323 // Use -1 to disable this safety feature. 324 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 325 326 // Minimum battery level to allow dreaming when not powered. 327 // Use -1 to disable this safety feature. 328 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 329 330 // If the battery level drops by this percentage and the user activity timeout 331 // has expired, then assume the device is receiving insufficient current to charge 332 // effectively and terminate the dream. Use -1 to disable this safety feature. 333 private int mDreamsBatteryLevelDrainCutoffConfig; 334 335 // True if dreams are enabled by the user. 336 private boolean mDreamsEnabledSetting; 337 338 // True if dreams should be activated on sleep. 339 private boolean mDreamsActivateOnSleepSetting; 340 341 // True if dreams should be activated on dock. 342 private boolean mDreamsActivateOnDockSetting; 343 344 // The screen off timeout setting value in milliseconds. 345 private int mScreenOffTimeoutSetting; 346 347 // The maximum allowable screen off timeout according to the device 348 // administration policy. Overrides other settings. 349 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 350 351 // The stay on while plugged in setting. 352 // A bitfield of battery conditions under which to make the screen stay on. 353 private int mStayOnWhilePluggedInSetting; 354 355 // True if the device should stay on. 356 private boolean mStayOn; 357 358 // True if the proximity sensor reads a positive result. 359 private boolean mProximityPositive; 360 361 // Screen brightness setting limits. 362 private int mScreenBrightnessSettingMinimum; 363 private int mScreenBrightnessSettingMaximum; 364 private int mScreenBrightnessSettingDefault; 365 366 // The screen brightness setting, from 0 to 255. 367 // Use -1 if no value has been set. 368 private int mScreenBrightnessSetting; 369 370 // The screen auto-brightness adjustment setting, from -1 to 1. 371 // Use 0 if there is no adjustment. 372 private float mScreenAutoBrightnessAdjustmentSetting; 373 374 // The screen brightness mode. 375 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 376 private int mScreenBrightnessModeSetting; 377 378 // The screen brightness setting override from the window manager 379 // to allow the current foreground activity to override the brightness. 380 // Use -1 to disable. 381 private int mScreenBrightnessOverrideFromWindowManager = -1; 382 383 // The user activity timeout override from the window manager 384 // to allow the current foreground activity to override the user activity timeout. 385 // Use -1 to disable. 386 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 387 388 // The screen brightness setting override from the settings application 389 // to temporarily adjust the brightness until next updated, 390 // Use -1 to disable. 391 private int mTemporaryScreenBrightnessSettingOverride = -1; 392 393 // The screen brightness adjustment setting override from the settings 394 // application to temporarily adjust the auto-brightness adjustment factor 395 // until next updated, in the range -1..1. 396 // Use NaN to disable. 397 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 398 399 // Time when we last logged a warning about calling userActivity() without permission. 400 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 401 402 private native void nativeInit(); 403 404 private static native void nativeAcquireSuspendBlocker(String name); 405 private static native void nativeReleaseSuspendBlocker(String name); 406 private static native void nativeSetInteractive(boolean enable); 407 private static native void nativeSetAutoSuspend(boolean enable); 408 private static native void nativeSendPowerHint(int hintId, int data); 409 410 public PowerManagerService(Context context) { 411 super(context); 412 mContext = context; 413 synchronized (mLock) { 414 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 415 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 416 mDisplaySuspendBlocker.acquire(); 417 mHoldingDisplaySuspendBlocker = true; 418 mHalAutoSuspendModeEnabled = false; 419 mHalInteractiveModeEnabled = true; 420 421 mScreenOnBlocker = new ScreenOnBlockerImpl(); 422 mWakefulness = WAKEFULNESS_AWAKE; 423 mInteractive = true; 424 425 nativeInit(); 426 nativeSetAutoSuspend(false); 427 nativeSetInteractive(true); 428 } 429 } 430 431 @Override 432 public void onStart() { 433 publishBinderService(Context.POWER_SERVICE, new BinderService()); 434 publishLocalService(PowerManagerInternal.class, new LocalService()); 435 } 436 437 /** 438 * Initialize the power manager. 439 * Must be called before any other functions within the power manager are called. 440 */ 441 public void init(LightsManager ls, 442 BatteryService bs, IBatteryStats bss, 443 IAppOpsService appOps) { 444 mLightsManager = ls; 445 mBatteryService = bs; 446 mBatteryStats = bss; 447 mAppOps = appOps; 448 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 449 mHandlerThread = new ServiceThread(TAG, 450 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 451 mHandlerThread.start(); 452 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 453 454 Watchdog.getInstance().addMonitor(this); 455 Watchdog.getInstance().addThread(mHandler); 456 } 457 458 void setPolicy(WindowManagerPolicy policy) { 459 synchronized (mLock) { 460 mPolicy = policy; 461 } 462 } 463 464 public void systemReady() { 465 synchronized (mLock) { 466 mSystemReady = true; 467 mDreamManager = LocalServices.getService(DreamManagerInternal.class); 468 469 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 470 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 471 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 472 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 473 474 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 475 476 // The notifier runs on the system server's main looper so as not to interfere 477 // with the animations and other critical functions of the power manager. 478 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 479 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 480 mScreenOnBlocker, mPolicy); 481 482 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 483 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 484 mHandler); 485 mSettingsObserver = new SettingsObserver(mHandler); 486 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 487 488 // Initialize display power management. 489 mDisplayManagerInternal.initPowerManagement( 490 mDisplayPowerCallbacks, mHandler, sensorManager); 491 492 // Register for broadcasts from other components of the system. 493 IntentFilter filter = new IntentFilter(); 494 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 495 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 496 497 filter = new IntentFilter(); 498 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 499 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 500 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 501 502 filter = new IntentFilter(); 503 filter.addAction(Intent.ACTION_DREAMING_STARTED); 504 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 505 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 506 507 filter = new IntentFilter(); 508 filter.addAction(Intent.ACTION_USER_SWITCHED); 509 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 510 511 filter = new IntentFilter(); 512 filter.addAction(Intent.ACTION_DOCK_EVENT); 513 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 514 515 // Register for settings changes. 516 final ContentResolver resolver = mContext.getContentResolver(); 517 resolver.registerContentObserver(Settings.Secure.getUriFor( 518 Settings.Secure.SCREENSAVER_ENABLED), 519 false, mSettingsObserver, UserHandle.USER_ALL); 520 resolver.registerContentObserver(Settings.Secure.getUriFor( 521 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 522 false, mSettingsObserver, UserHandle.USER_ALL); 523 resolver.registerContentObserver(Settings.Secure.getUriFor( 524 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 525 false, mSettingsObserver, UserHandle.USER_ALL); 526 resolver.registerContentObserver(Settings.System.getUriFor( 527 Settings.System.SCREEN_OFF_TIMEOUT), 528 false, mSettingsObserver, UserHandle.USER_ALL); 529 resolver.registerContentObserver(Settings.Global.getUriFor( 530 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 531 false, mSettingsObserver, UserHandle.USER_ALL); 532 resolver.registerContentObserver(Settings.System.getUriFor( 533 Settings.System.SCREEN_BRIGHTNESS), 534 false, mSettingsObserver, UserHandle.USER_ALL); 535 resolver.registerContentObserver(Settings.System.getUriFor( 536 Settings.System.SCREEN_BRIGHTNESS_MODE), 537 false, mSettingsObserver, UserHandle.USER_ALL); 538 resolver.registerContentObserver(Settings.Global.getUriFor( 539 Settings.Global.LOW_POWER_MODE), 540 false, mSettingsObserver, UserHandle.USER_ALL); 541 // Go. 542 readConfigurationLocked(); 543 updateSettingsLocked(); 544 mDirty |= DIRTY_BATTERY_STATE; 545 updatePowerStateLocked(); 546 } 547 } 548 549 private void readConfigurationLocked() { 550 final Resources resources = mContext.getResources(); 551 552 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 553 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 554 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 555 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 556 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 557 com.android.internal.R.bool.config_unplugTurnsOnScreen); 558 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 559 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 560 mDreamsSupportedConfig = resources.getBoolean( 561 com.android.internal.R.bool.config_dreamsSupported); 562 mDreamsEnabledByDefaultConfig = resources.getBoolean( 563 com.android.internal.R.bool.config_dreamsEnabledByDefault); 564 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 565 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 566 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 567 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 568 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 569 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 570 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 571 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 572 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 573 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 574 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 575 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 576 } 577 578 private void updateSettingsLocked() { 579 final ContentResolver resolver = mContext.getContentResolver(); 580 581 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 582 Settings.Secure.SCREENSAVER_ENABLED, 583 mDreamsEnabledByDefaultConfig ? 1 : 0, 584 UserHandle.USER_CURRENT) != 0); 585 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 586 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 587 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 588 UserHandle.USER_CURRENT) != 0); 589 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 590 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 591 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 592 UserHandle.USER_CURRENT) != 0); 593 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 594 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 595 UserHandle.USER_CURRENT); 596 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 597 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 598 599 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 600 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 601 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 602 UserHandle.USER_CURRENT); 603 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 604 mTemporaryScreenBrightnessSettingOverride = -1; 605 } 606 607 final float oldScreenAutoBrightnessAdjustmentSetting = 608 mScreenAutoBrightnessAdjustmentSetting; 609 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 610 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 611 UserHandle.USER_CURRENT); 612 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 613 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 614 } 615 616 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 617 Settings.System.SCREEN_BRIGHTNESS_MODE, 618 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 619 620 boolean mIsEnabled = Settings.Global.getInt(resolver, 621 Settings.Global.LOW_POWER_MODE, 0) != 0; 622 if (mIsEnabled != mLowPowerModeEnabled) { 623 BinderService bs = new BinderService(); 624 bs.powerHint(POWER_HINT_LOW_POWER_MODE, mIsEnabled ? 1 : 0); 625 mLowPowerModeEnabled = mIsEnabled; 626 } 627 628 mDirty |= DIRTY_SETTINGS; 629 } 630 631 private void handleSettingsChangedLocked() { 632 updateSettingsLocked(); 633 updatePowerStateLocked(); 634 } 635 636 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 637 WorkSource ws, String historyTag, int uid, int pid) { 638 synchronized (mLock) { 639 if (DEBUG_SPEW) { 640 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 641 + ", flags=0x" + Integer.toHexString(flags) 642 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 643 } 644 645 WakeLock wakeLock; 646 int index = findWakeLockIndexLocked(lock); 647 if (index >= 0) { 648 wakeLock = mWakeLocks.get(index); 649 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 650 // Update existing wake lock. This shouldn't happen but is harmless. 651 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 652 uid, pid, ws, historyTag); 653 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 654 } 655 } else { 656 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 657 try { 658 lock.linkToDeath(wakeLock, 0); 659 } catch (RemoteException ex) { 660 throw new IllegalArgumentException("Wake lock is already dead."); 661 } 662 notifyWakeLockAcquiredLocked(wakeLock); 663 mWakeLocks.add(wakeLock); 664 } 665 666 applyWakeLockFlagsOnAcquireLocked(wakeLock); 667 mDirty |= DIRTY_WAKE_LOCKS; 668 updatePowerStateLocked(); 669 } 670 } 671 672 @SuppressWarnings("deprecation") 673 private static boolean isScreenLock(final WakeLock wakeLock) { 674 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 675 case PowerManager.FULL_WAKE_LOCK: 676 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 677 case PowerManager.SCREEN_DIM_WAKE_LOCK: 678 return true; 679 } 680 return false; 681 } 682 683 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 684 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 685 && isScreenLock(wakeLock)) { 686 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 687 } 688 } 689 690 private void releaseWakeLockInternal(IBinder lock, int flags) { 691 synchronized (mLock) { 692 int index = findWakeLockIndexLocked(lock); 693 if (index < 0) { 694 if (DEBUG_SPEW) { 695 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 696 + " [not found], flags=0x" + Integer.toHexString(flags)); 697 } 698 return; 699 } 700 701 WakeLock wakeLock = mWakeLocks.get(index); 702 if (DEBUG_SPEW) { 703 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 704 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 705 } 706 707 mWakeLocks.remove(index); 708 notifyWakeLockReleasedLocked(wakeLock); 709 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 710 711 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 712 mRequestWaitForNegativeProximity = true; 713 } 714 715 applyWakeLockFlagsOnReleaseLocked(wakeLock); 716 mDirty |= DIRTY_WAKE_LOCKS; 717 updatePowerStateLocked(); 718 } 719 } 720 721 private void handleWakeLockDeath(WakeLock wakeLock) { 722 synchronized (mLock) { 723 if (DEBUG_SPEW) { 724 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 725 + " [" + wakeLock.mTag + "]"); 726 } 727 728 int index = mWakeLocks.indexOf(wakeLock); 729 if (index < 0) { 730 return; 731 } 732 733 mWakeLocks.remove(index); 734 notifyWakeLockReleasedLocked(wakeLock); 735 736 applyWakeLockFlagsOnReleaseLocked(wakeLock); 737 mDirty |= DIRTY_WAKE_LOCKS; 738 updatePowerStateLocked(); 739 } 740 } 741 742 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 743 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 744 && isScreenLock(wakeLock)) { 745 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 746 PowerManager.USER_ACTIVITY_EVENT_OTHER, 747 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 748 wakeLock.mOwnerUid); 749 } 750 } 751 752 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag) { 753 synchronized (mLock) { 754 int index = findWakeLockIndexLocked(lock); 755 if (index < 0) { 756 if (DEBUG_SPEW) { 757 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 758 + " [not found], ws=" + ws); 759 } 760 throw new IllegalArgumentException("Wake lock not active"); 761 } 762 763 WakeLock wakeLock = mWakeLocks.get(index); 764 if (DEBUG_SPEW) { 765 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 766 + " [" + wakeLock.mTag + "], ws=" + ws); 767 } 768 769 if (!wakeLock.hasSameWorkSource(ws)) { 770 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 771 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 772 ws, historyTag); 773 wakeLock.mHistoryTag = historyTag; 774 wakeLock.updateWorkSource(ws); 775 } 776 } 777 } 778 779 private int findWakeLockIndexLocked(IBinder lock) { 780 final int count = mWakeLocks.size(); 781 for (int i = 0; i < count; i++) { 782 if (mWakeLocks.get(i).mLock == lock) { 783 return i; 784 } 785 } 786 return -1; 787 } 788 789 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 790 if (mSystemReady) { 791 wakeLock.mNotifiedAcquired = true; 792 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 793 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 794 wakeLock.mHistoryTag); 795 } 796 } 797 798 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 799 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 800 if (mSystemReady && wakeLock.mNotifiedAcquired) { 801 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 802 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 803 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 804 } 805 } 806 807 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 808 if (mSystemReady && wakeLock.mNotifiedAcquired) { 809 wakeLock.mNotifiedAcquired = false; 810 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 811 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 812 } 813 } 814 815 @SuppressWarnings("deprecation") 816 private boolean isWakeLockLevelSupportedInternal(int level) { 817 synchronized (mLock) { 818 switch (level) { 819 case PowerManager.PARTIAL_WAKE_LOCK: 820 case PowerManager.SCREEN_DIM_WAKE_LOCK: 821 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 822 case PowerManager.FULL_WAKE_LOCK: 823 case PowerManager.DOZE_WAKE_LOCK: 824 return true; 825 826 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 827 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 828 829 default: 830 return false; 831 } 832 } 833 } 834 835 // Called from native code. 836 private void userActivityFromNative(long eventTime, int event, int flags) { 837 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 838 } 839 840 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 841 synchronized (mLock) { 842 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 843 updatePowerStateLocked(); 844 } 845 } 846 } 847 848 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 849 if (DEBUG_SPEW) { 850 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 851 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 852 + ", uid=" + uid); 853 } 854 855 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 856 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 857 || !mBootCompleted || !mSystemReady) { 858 return false; 859 } 860 861 mNotifier.onUserActivity(event, uid); 862 863 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 864 if (eventTime > mLastUserActivityTimeNoChangeLights 865 && eventTime > mLastUserActivityTime) { 866 mLastUserActivityTimeNoChangeLights = eventTime; 867 mDirty |= DIRTY_USER_ACTIVITY; 868 return true; 869 } 870 } else { 871 if (eventTime > mLastUserActivityTime) { 872 mLastUserActivityTime = eventTime; 873 mDirty |= DIRTY_USER_ACTIVITY; 874 return true; 875 } 876 } 877 return false; 878 } 879 880 private void wakeUpInternal(long eventTime) { 881 synchronized (mLock) { 882 if (wakeUpNoUpdateLocked(eventTime)) { 883 updatePowerStateLocked(); 884 } 885 } 886 } 887 888 private boolean wakeUpNoUpdateLocked(long eventTime) { 889 if (DEBUG_SPEW) { 890 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 891 } 892 893 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 894 || !mBootCompleted || !mSystemReady) { 895 return false; 896 } 897 898 switch (mWakefulness) { 899 case WAKEFULNESS_ASLEEP: 900 Slog.i(TAG, "Waking up from sleep..."); 901 break; 902 case WAKEFULNESS_DREAMING: 903 Slog.i(TAG, "Waking up from dream..."); 904 break; 905 case WAKEFULNESS_DOZING: 906 Slog.i(TAG, "Waking up from dozing..."); 907 break; 908 } 909 910 mLastWakeTime = eventTime; 911 mDirty |= DIRTY_WAKEFULNESS; 912 mWakefulness = WAKEFULNESS_AWAKE; 913 setInteractiveStateLocked(true, 0); 914 915 userActivityNoUpdateLocked( 916 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 917 return true; 918 } 919 920 private void goToSleepInternal(long eventTime, int reason) { 921 synchronized (mLock) { 922 if (goToSleepNoUpdateLocked(eventTime, reason)) { 923 updatePowerStateLocked(); 924 } 925 } 926 } 927 928 // This method is called goToSleep for historical reasons but we actually start 929 // dozing before really going to sleep. 930 @SuppressWarnings("deprecation") 931 private boolean goToSleepNoUpdateLocked(long eventTime, int reason) { 932 if (DEBUG_SPEW) { 933 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime + ", reason=" + reason); 934 } 935 936 if (eventTime < mLastWakeTime 937 || mWakefulness == WAKEFULNESS_ASLEEP 938 || mWakefulness == WAKEFULNESS_DOZING 939 || !mBootCompleted || !mSystemReady) { 940 return false; 941 } 942 943 switch (reason) { 944 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 945 Slog.i(TAG, "Going to sleep due to device administration policy..."); 946 break; 947 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 948 Slog.i(TAG, "Going to sleep due to screen timeout..."); 949 break; 950 default: 951 Slog.i(TAG, "Going to sleep by user request..."); 952 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 953 break; 954 } 955 956 mLastSleepTime = eventTime; 957 mDirty |= DIRTY_WAKEFULNESS; 958 mWakefulness = WAKEFULNESS_DOZING; 959 mSandmanSummoned = true; 960 setInteractiveStateLocked(false, reason); 961 962 // Report the number of wake locks that will be cleared by going to sleep. 963 int numWakeLocksCleared = 0; 964 final int numWakeLocks = mWakeLocks.size(); 965 for (int i = 0; i < numWakeLocks; i++) { 966 final WakeLock wakeLock = mWakeLocks.get(i); 967 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 968 case PowerManager.FULL_WAKE_LOCK: 969 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 970 case PowerManager.SCREEN_DIM_WAKE_LOCK: 971 numWakeLocksCleared += 1; 972 break; 973 } 974 } 975 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 976 return true; 977 } 978 979 private void napInternal(long eventTime) { 980 synchronized (mLock) { 981 if (napNoUpdateLocked(eventTime)) { 982 updatePowerStateLocked(); 983 } 984 } 985 } 986 987 private boolean napNoUpdateLocked(long eventTime) { 988 if (DEBUG_SPEW) { 989 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 990 } 991 992 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 993 || !mBootCompleted || !mSystemReady) { 994 return false; 995 } 996 997 Slog.i(TAG, "Nap time..."); 998 999 mDirty |= DIRTY_WAKEFULNESS; 1000 mWakefulness = WAKEFULNESS_DREAMING; 1001 mSandmanSummoned = true; 1002 setInteractiveStateLocked(true, 0); 1003 return true; 1004 } 1005 1006 // Done dozing, drop everything and go to sleep. 1007 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 1008 if (DEBUG_SPEW) { 1009 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 1010 } 1011 1012 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1013 || !mBootCompleted || !mSystemReady) { 1014 return false; 1015 } 1016 1017 Slog.i(TAG, "Sleeping..."); 1018 1019 mDirty |= DIRTY_WAKEFULNESS; 1020 mWakefulness = WAKEFULNESS_ASLEEP; 1021 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1022 return true; 1023 } 1024 1025 private void setInteractiveStateLocked(boolean interactive, int reason) { 1026 if (mInteractive != interactive) { 1027 finishInteractiveStateChangeLocked(); 1028 1029 mInteractive = interactive; 1030 mInteractiveChanging = true; 1031 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1032 } 1033 } 1034 1035 private void finishInteractiveStateChangeLocked() { 1036 if (mInteractiveChanging) { 1037 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1038 mInteractiveChanging = false; 1039 } 1040 } 1041 1042 /** 1043 * Updates the global power state based on dirty bits recorded in mDirty. 1044 * 1045 * This is the main function that performs power state transitions. 1046 * We centralize them here so that we can recompute the power state completely 1047 * each time something important changes, and ensure that we do it the same 1048 * way each time. The point is to gather all of the transition logic here. 1049 */ 1050 private void updatePowerStateLocked() { 1051 if (!mSystemReady || mDirty == 0) { 1052 return; 1053 } 1054 if (!Thread.holdsLock(mLock)) { 1055 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1056 } 1057 1058 // Phase 0: Basic state updates. 1059 updateIsPoweredLocked(mDirty); 1060 updateStayOnLocked(mDirty); 1061 1062 // Phase 1: Update wakefulness. 1063 // Loop because the wake lock and user activity computations are influenced 1064 // by changes in wakefulness. 1065 final long now = SystemClock.uptimeMillis(); 1066 int dirtyPhase2 = 0; 1067 for (;;) { 1068 int dirtyPhase1 = mDirty; 1069 dirtyPhase2 |= dirtyPhase1; 1070 mDirty = 0; 1071 1072 updateWakeLockSummaryLocked(dirtyPhase1); 1073 updateUserActivitySummaryLocked(now, dirtyPhase1); 1074 if (!updateWakefulnessLocked(dirtyPhase1)) { 1075 break; 1076 } 1077 } 1078 1079 // Phase 2: Update dreams and display power state. 1080 updateDreamLocked(dirtyPhase2); 1081 updateDisplayPowerStateLocked(dirtyPhase2); 1082 1083 // Phase 3: Send notifications, if needed. 1084 if (mDisplayReady) { 1085 finishInteractiveStateChangeLocked(); 1086 } 1087 1088 // Phase 4: Update suspend blocker. 1089 // Because we might release the last suspend blocker here, we need to make sure 1090 // we finished everything else first! 1091 updateSuspendBlockerLocked(); 1092 } 1093 1094 /** 1095 * Updates the value of mIsPowered. 1096 * Sets DIRTY_IS_POWERED if a change occurred. 1097 */ 1098 private void updateIsPoweredLocked(int dirty) { 1099 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1100 final boolean wasPowered = mIsPowered; 1101 final int oldPlugType = mPlugType; 1102 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1103 mPlugType = mBatteryService.getPlugType(); 1104 mBatteryLevel = mBatteryService.getBatteryLevel(); 1105 1106 if (DEBUG_SPEW) { 1107 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1108 + ", mIsPowered=" + mIsPowered 1109 + ", oldPlugType=" + oldPlugType 1110 + ", mPlugType=" + mPlugType 1111 + ", mBatteryLevel=" + mBatteryLevel); 1112 } 1113 1114 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1115 mDirty |= DIRTY_IS_POWERED; 1116 1117 // Update wireless dock detection state. 1118 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1119 mIsPowered, mPlugType, mBatteryLevel); 1120 1121 // Treat plugging and unplugging the devices as a user activity. 1122 // Users find it disconcerting when they plug or unplug the device 1123 // and it shuts off right away. 1124 // Some devices also wake the device when plugged or unplugged because 1125 // they don't have a charging LED. 1126 final long now = SystemClock.uptimeMillis(); 1127 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1128 dockedOnWirelessCharger)) { 1129 wakeUpNoUpdateLocked(now); 1130 } 1131 userActivityNoUpdateLocked( 1132 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1133 1134 // Tell the notifier whether wireless charging has started so that 1135 // it can provide feedback to the user. 1136 if (dockedOnWirelessCharger) { 1137 mNotifier.onWirelessChargingStarted(); 1138 } 1139 } 1140 } 1141 } 1142 1143 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1144 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1145 // Don't wake when powered unless configured to do so. 1146 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1147 return false; 1148 } 1149 1150 // Don't wake when undocked from wireless charger. 1151 // See WirelessChargerDetector for justification. 1152 if (wasPowered && !mIsPowered 1153 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1154 return false; 1155 } 1156 1157 // Don't wake when docked on wireless charger unless we are certain of it. 1158 // See WirelessChargerDetector for justification. 1159 if (!wasPowered && mIsPowered 1160 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1161 && !dockedOnWirelessCharger) { 1162 return false; 1163 } 1164 1165 // If already dreaming and becoming powered, then don't wake. 1166 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1167 return false; 1168 } 1169 1170 // Otherwise wake up! 1171 return true; 1172 } 1173 1174 /** 1175 * Updates the value of mStayOn. 1176 * Sets DIRTY_STAY_ON if a change occurred. 1177 */ 1178 private void updateStayOnLocked(int dirty) { 1179 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1180 final boolean wasStayOn = mStayOn; 1181 if (mStayOnWhilePluggedInSetting != 0 1182 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1183 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1184 } else { 1185 mStayOn = false; 1186 } 1187 1188 if (mStayOn != wasStayOn) { 1189 mDirty |= DIRTY_STAY_ON; 1190 } 1191 } 1192 } 1193 1194 /** 1195 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1196 * Note that most wake-locks are ignored when the system is asleep. 1197 * 1198 * This function must have no other side-effects. 1199 */ 1200 @SuppressWarnings("deprecation") 1201 private void updateWakeLockSummaryLocked(int dirty) { 1202 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1203 mWakeLockSummary = 0; 1204 1205 final int numWakeLocks = mWakeLocks.size(); 1206 for (int i = 0; i < numWakeLocks; i++) { 1207 final WakeLock wakeLock = mWakeLocks.get(i); 1208 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1209 case PowerManager.PARTIAL_WAKE_LOCK: 1210 mWakeLockSummary |= WAKE_LOCK_CPU; 1211 break; 1212 case PowerManager.FULL_WAKE_LOCK: 1213 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1214 break; 1215 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1216 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1217 break; 1218 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1219 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1220 break; 1221 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1222 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1223 break; 1224 case PowerManager.DOZE_WAKE_LOCK: 1225 mWakeLockSummary |= WAKE_LOCK_DOZE; 1226 break; 1227 } 1228 } 1229 1230 // Cancel wake locks that make no sense based on the current state. 1231 if (mWakefulness != WAKEFULNESS_DOZING) { 1232 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1233 } 1234 if (mWakefulness == WAKEFULNESS_ASLEEP 1235 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1236 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1237 | WAKE_LOCK_BUTTON_BRIGHT); 1238 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1239 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1240 } 1241 } 1242 1243 // Infer implied wake locks where necessary based on the current state. 1244 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1245 if (mWakefulness == WAKEFULNESS_AWAKE) { 1246 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1247 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1248 mWakeLockSummary |= WAKE_LOCK_CPU; 1249 } 1250 } 1251 1252 if (DEBUG_SPEW) { 1253 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1254 + wakefulnessToString(mWakefulness) 1255 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1256 } 1257 } 1258 } 1259 1260 /** 1261 * Updates the value of mUserActivitySummary to summarize the user requested 1262 * state of the system such as whether the screen should be bright or dim. 1263 * Note that user activity is ignored when the system is asleep. 1264 * 1265 * This function must have no other side-effects. 1266 */ 1267 private void updateUserActivitySummaryLocked(long now, int dirty) { 1268 // Update the status of the user activity timeout timer. 1269 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1270 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1271 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1272 1273 long nextTimeout = 0; 1274 if (mWakefulness == WAKEFULNESS_AWAKE 1275 || mWakefulness == WAKEFULNESS_DREAMING 1276 || mWakefulness == WAKEFULNESS_DOZING) { 1277 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1278 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1279 1280 mUserActivitySummary = 0; 1281 if (mLastUserActivityTime >= mLastWakeTime) { 1282 nextTimeout = mLastUserActivityTime 1283 + screenOffTimeout - screenDimDuration; 1284 if (now < nextTimeout) { 1285 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1286 } else { 1287 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1288 if (now < nextTimeout) { 1289 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1290 } 1291 } 1292 } 1293 if (mUserActivitySummary == 0 1294 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1295 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1296 if (now < nextTimeout 1297 && mDisplayPowerRequest.wantScreenOnNormal()) { 1298 mUserActivitySummary = mDisplayPowerRequest.screenState 1299 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1300 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1301 } 1302 } 1303 if (mUserActivitySummary != 0) { 1304 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1305 msg.setAsynchronous(true); 1306 mHandler.sendMessageAtTime(msg, nextTimeout); 1307 } 1308 } else { 1309 mUserActivitySummary = 0; 1310 } 1311 1312 if (DEBUG_SPEW) { 1313 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1314 + wakefulnessToString(mWakefulness) 1315 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1316 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1317 } 1318 } 1319 } 1320 1321 /** 1322 * Called when a user activity timeout has occurred. 1323 * Simply indicates that something about user activity has changed so that the new 1324 * state can be recomputed when the power state is updated. 1325 * 1326 * This function must have no other side-effects besides setting the dirty 1327 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1328 */ 1329 private void handleUserActivityTimeout() { // runs on handler thread 1330 synchronized (mLock) { 1331 if (DEBUG_SPEW) { 1332 Slog.d(TAG, "handleUserActivityTimeout"); 1333 } 1334 1335 mDirty |= DIRTY_USER_ACTIVITY; 1336 updatePowerStateLocked(); 1337 } 1338 } 1339 1340 private int getScreenOffTimeoutLocked() { 1341 int timeout = mScreenOffTimeoutSetting; 1342 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1343 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1344 } 1345 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1346 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1347 } 1348 return Math.max(timeout, MINIMUM_SCREEN_OFF_TIMEOUT); 1349 } 1350 1351 private int getScreenDimDurationLocked(int screenOffTimeout) { 1352 return Math.min(SCREEN_DIM_DURATION, 1353 (int)(screenOffTimeout * MAXIMUM_SCREEN_DIM_RATIO)); 1354 } 1355 1356 /** 1357 * Updates the wakefulness of the device. 1358 * 1359 * This is the function that decides whether the device should start dreaming 1360 * based on the current wake locks and user activity state. It may modify mDirty 1361 * if the wakefulness changes. 1362 * 1363 * Returns true if the wakefulness changed and we need to restart power state calculation. 1364 */ 1365 private boolean updateWakefulnessLocked(int dirty) { 1366 boolean changed = false; 1367 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1368 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1369 | DIRTY_DOCK_STATE)) != 0) { 1370 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1371 if (DEBUG_SPEW) { 1372 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1373 } 1374 final long time = SystemClock.uptimeMillis(); 1375 if (shouldNapAtBedTimeLocked()) { 1376 changed = napNoUpdateLocked(time); 1377 } else { 1378 changed = goToSleepNoUpdateLocked(time, 1379 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1380 } 1381 } 1382 } 1383 return changed; 1384 } 1385 1386 /** 1387 * Returns true if the device should automatically nap and start dreaming when the user 1388 * activity timeout has expired and it's bedtime. 1389 */ 1390 private boolean shouldNapAtBedTimeLocked() { 1391 return mDreamsActivateOnSleepSetting 1392 || (mDreamsActivateOnDockSetting 1393 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1394 } 1395 1396 /** 1397 * Returns true if the device should go to sleep now. 1398 * Also used when exiting a dream to determine whether we should go back 1399 * to being fully awake or else go to sleep for good. 1400 */ 1401 private boolean isItBedTimeYetLocked() { 1402 return mBootCompleted && !isBeingKeptAwakeLocked(); 1403 } 1404 1405 /** 1406 * Returns true if the device is being kept awake by a wake lock, user activity 1407 * or the stay on while powered setting. We also keep the phone awake when 1408 * the proximity sensor returns a positive result so that the device does not 1409 * lock while in a phone call. This function only controls whether the device 1410 * will go to sleep or dream which is independent of whether it will be allowed 1411 * to suspend. 1412 */ 1413 private boolean isBeingKeptAwakeLocked() { 1414 return mStayOn 1415 || mProximityPositive 1416 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1417 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1418 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1419 } 1420 1421 /** 1422 * Determines whether to post a message to the sandman to update the dream state. 1423 */ 1424 private void updateDreamLocked(int dirty) { 1425 if ((dirty & (DIRTY_WAKEFULNESS 1426 | DIRTY_USER_ACTIVITY 1427 | DIRTY_WAKE_LOCKS 1428 | DIRTY_BOOT_COMPLETED 1429 | DIRTY_SETTINGS 1430 | DIRTY_IS_POWERED 1431 | DIRTY_STAY_ON 1432 | DIRTY_PROXIMITY_POSITIVE 1433 | DIRTY_BATTERY_STATE)) != 0) { 1434 scheduleSandmanLocked(); 1435 } 1436 } 1437 1438 private void scheduleSandmanLocked() { 1439 if (!mSandmanScheduled) { 1440 mSandmanScheduled = true; 1441 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1442 msg.setAsynchronous(true); 1443 mHandler.sendMessage(msg); 1444 } 1445 } 1446 1447 /** 1448 * Called when the device enters or exits a dreaming or dozing state. 1449 * 1450 * We do this asynchronously because we must call out of the power manager to start 1451 * the dream and we don't want to hold our lock while doing so. There is a risk that 1452 * the device will wake or go to sleep in the meantime so we have to handle that case. 1453 */ 1454 private void handleSandman() { // runs on handler thread 1455 // Handle preconditions. 1456 final boolean startDreaming; 1457 final int wakefulness; 1458 synchronized (mLock) { 1459 mSandmanScheduled = false; 1460 wakefulness = mWakefulness; 1461 if (mSandmanSummoned) { 1462 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1463 || wakefulness == WAKEFULNESS_DOZING); 1464 mSandmanSummoned = false; 1465 } else { 1466 startDreaming = false; 1467 } 1468 } 1469 1470 // Start dreaming if needed. 1471 // We only control the dream on the handler thread, so we don't need to worry about 1472 // concurrent attempts to start or stop the dream. 1473 final boolean isDreaming; 1474 if (mDreamManager != null) { 1475 // Restart the dream whenever the sandman is summoned. 1476 if (startDreaming) { 1477 mDreamManager.stopDream(); 1478 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1479 } 1480 isDreaming = mDreamManager.isDreaming(); 1481 } else { 1482 isDreaming = false; 1483 } 1484 1485 // Update dream state. 1486 synchronized (mLock) { 1487 // Remember the initial battery level when the dream started. 1488 if (startDreaming && isDreaming) { 1489 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1490 if (wakefulness == WAKEFULNESS_DOZING) { 1491 Slog.i(TAG, "Dozing..."); 1492 } else { 1493 Slog.i(TAG, "Dreaming..."); 1494 } 1495 } 1496 1497 // If preconditions changed, wait for the next iteration to determine 1498 // whether the dream should continue (or be restarted). 1499 if (mSandmanSummoned || mWakefulness != wakefulness) { 1500 return; // wait for next cycle 1501 } 1502 1503 // Determine whether the dream should continue. 1504 if (wakefulness == WAKEFULNESS_DREAMING) { 1505 if (isDreaming && canDreamLocked()) { 1506 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1507 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1508 - mDreamsBatteryLevelDrainCutoffConfig 1509 && !isBeingKeptAwakeLocked()) { 1510 // If the user activity timeout expired and the battery appears 1511 // to be draining faster than it is charging then stop dreaming 1512 // and go to sleep. 1513 Slog.i(TAG, "Stopping dream because the battery appears to " 1514 + "be draining faster than it is charging. " 1515 + "Battery level when dream started: " 1516 + mBatteryLevelWhenDreamStarted + "%. " 1517 + "Battery level now: " + mBatteryLevel + "%."); 1518 } else { 1519 return; // continue dreaming 1520 } 1521 } 1522 1523 // Dream has ended or will be stopped. Update the power state. 1524 if (isItBedTimeYetLocked()) { 1525 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1526 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1527 updatePowerStateLocked(); 1528 } else { 1529 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1530 updatePowerStateLocked(); 1531 } 1532 } else if (wakefulness == WAKEFULNESS_DOZING) { 1533 if (isDreaming) { 1534 return; // continue dozing 1535 } 1536 1537 // Doze has ended or will be stopped. Update the power state. 1538 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1539 updatePowerStateLocked(); 1540 } 1541 } 1542 1543 // Stop dream. 1544 if (isDreaming) { 1545 mDreamManager.stopDream(); 1546 } 1547 } 1548 1549 /** 1550 * Returns true if the device is allowed to dream in its current state. 1551 * This function is not called when dozing. 1552 */ 1553 private boolean canDreamLocked() { 1554 if (mWakefulness != WAKEFULNESS_DREAMING 1555 || !mDreamsSupportedConfig 1556 || !mDreamsEnabledSetting 1557 || !mDisplayPowerRequest.wantScreenOnNormal() 1558 || !mBootCompleted) { 1559 return false; 1560 } 1561 if (!isBeingKeptAwakeLocked()) { 1562 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1563 return false; 1564 } 1565 if (!mIsPowered 1566 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1567 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1568 return false; 1569 } 1570 if (mIsPowered 1571 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1572 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1573 return false; 1574 } 1575 } 1576 return true; 1577 } 1578 1579 private void handleScreenOnBlockerReleased() { 1580 synchronized (mLock) { 1581 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1582 updatePowerStateLocked(); 1583 } 1584 } 1585 1586 /** 1587 * Updates the display power state asynchronously. 1588 * When the update is finished, mDisplayReady will be set to true. The display 1589 * controller posts a message to tell us when the actual display power state 1590 * has been updated so we come back here to double-check and finish up. 1591 * 1592 * This function recalculates the display power state each time. 1593 */ 1594 private void updateDisplayPowerStateLocked(int dirty) { 1595 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1596 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1597 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1598 final int newScreenState = getDesiredScreenPowerStateLocked(); 1599 mDisplayPowerRequest.screenState = newScreenState; 1600 1601 int screenBrightness = mScreenBrightnessSettingDefault; 1602 float screenAutoBrightnessAdjustment = 0.0f; 1603 boolean autoBrightness = (mScreenBrightnessModeSetting == 1604 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1605 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1606 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1607 autoBrightness = false; 1608 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1609 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1610 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1611 screenBrightness = mScreenBrightnessSetting; 1612 } 1613 if (autoBrightness) { 1614 screenBrightness = mScreenBrightnessSettingDefault; 1615 if (isValidAutoBrightnessAdjustment( 1616 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1617 screenAutoBrightnessAdjustment = 1618 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1619 } else if (isValidAutoBrightnessAdjustment( 1620 mScreenAutoBrightnessAdjustmentSetting)) { 1621 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1622 } 1623 } 1624 screenBrightness = Math.max(Math.min(screenBrightness, 1625 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1626 screenAutoBrightnessAdjustment = Math.max(Math.min( 1627 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1628 mDisplayPowerRequest.screenBrightness = screenBrightness; 1629 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1630 screenAutoBrightnessAdjustment; 1631 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1632 1633 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1634 1635 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1636 1637 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1638 mRequestWaitForNegativeProximity); 1639 mRequestWaitForNegativeProximity = false; 1640 1641 if (DEBUG_SPEW) { 1642 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1643 + ", newScreenState=" + newScreenState 1644 + ", mWakefulness=" + mWakefulness 1645 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1646 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1647 + ", mBootCompleted=" + mBootCompleted); 1648 } 1649 } 1650 } 1651 1652 private static boolean isValidBrightness(int value) { 1653 return value >= 0 && value <= 255; 1654 } 1655 1656 private static boolean isValidAutoBrightnessAdjustment(float value) { 1657 // Handles NaN by always returning false. 1658 return value >= -1.0f && value <= 1.0f; 1659 } 1660 1661 private int getDesiredScreenPowerStateLocked() { 1662 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1663 return DisplayPowerRequest.SCREEN_STATE_OFF; 1664 } 1665 1666 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1667 return DisplayPowerRequest.SCREEN_STATE_DOZE; 1668 } 1669 1670 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1671 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1672 || !mBootCompleted) { 1673 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1674 } 1675 1676 return DisplayPowerRequest.SCREEN_STATE_DIM; 1677 } 1678 1679 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1680 new DisplayManagerInternal.DisplayPowerCallbacks() { 1681 private int mDisplayState = Display.STATE_UNKNOWN; 1682 1683 @Override 1684 public void onStateChanged() { 1685 synchronized (mLock) { 1686 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1687 updatePowerStateLocked(); 1688 } 1689 } 1690 1691 @Override 1692 public void onProximityPositive() { 1693 synchronized (mLock) { 1694 mProximityPositive = true; 1695 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1696 updatePowerStateLocked(); 1697 } 1698 } 1699 1700 @Override 1701 public void onProximityNegative() { 1702 synchronized (mLock) { 1703 mProximityPositive = false; 1704 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1705 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1706 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1707 updatePowerStateLocked(); 1708 } 1709 } 1710 1711 @Override 1712 public void onDisplayStateChange(int state) { 1713 // This method is only needed to support legacy display blanking behavior 1714 // where the display's power state is coupled to suspend or to the power HAL. 1715 // The order of operations matters here. 1716 synchronized (mLock) { 1717 if (mDisplayState != state) { 1718 mDisplayState = state; 1719 if (state == Display.STATE_OFF) { 1720 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1721 setHalInteractiveModeLocked(false); 1722 } 1723 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1724 setHalAutoSuspendModeLocked(true); 1725 } 1726 } else { 1727 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1728 setHalAutoSuspendModeLocked(false); 1729 } 1730 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1731 setHalInteractiveModeLocked(true); 1732 } 1733 } 1734 } 1735 } 1736 } 1737 1738 @Override 1739 public void acquireSuspendBlocker() { 1740 mDisplaySuspendBlocker.acquire(); 1741 } 1742 1743 @Override 1744 public void releaseSuspendBlocker() { 1745 mDisplaySuspendBlocker.release(); 1746 } 1747 1748 @Override 1749 public String toString() { 1750 synchronized (this) { 1751 return "state=" + Display.stateToString(mDisplayState); 1752 } 1753 } 1754 }; 1755 1756 private boolean shouldUseProximitySensorLocked() { 1757 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1758 } 1759 1760 /** 1761 * Updates the suspend blocker that keeps the CPU alive. 1762 * 1763 * This function must have no other side-effects. 1764 */ 1765 private void updateSuspendBlockerLocked() { 1766 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1767 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1768 final boolean autoSuspend = !needDisplaySuspendBlocker; 1769 1770 // Disable auto-suspend if needed. 1771 if (!autoSuspend) { 1772 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1773 setHalAutoSuspendModeLocked(false); 1774 } 1775 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1776 setHalInteractiveModeLocked(true); 1777 } 1778 } 1779 1780 // First acquire suspend blockers if needed. 1781 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1782 mWakeLockSuspendBlocker.acquire(); 1783 mHoldingWakeLockSuspendBlocker = true; 1784 } 1785 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1786 mDisplaySuspendBlocker.acquire(); 1787 mHoldingDisplaySuspendBlocker = true; 1788 } 1789 1790 // Then release suspend blockers if needed. 1791 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1792 mWakeLockSuspendBlocker.release(); 1793 mHoldingWakeLockSuspendBlocker = false; 1794 } 1795 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1796 mDisplaySuspendBlocker.release(); 1797 mHoldingDisplaySuspendBlocker = false; 1798 } 1799 1800 // Enable auto-suspend if needed. 1801 if (autoSuspend) { 1802 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1803 setHalInteractiveModeLocked(false); 1804 } 1805 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1806 setHalAutoSuspendModeLocked(true); 1807 } 1808 } 1809 } 1810 1811 /** 1812 * Return true if we must keep a suspend blocker active on behalf of the display. 1813 * We do so if the screen is on or is in transition between states. 1814 */ 1815 private boolean needDisplaySuspendBlockerLocked() { 1816 if (!mDisplayReady) { 1817 return true; 1818 } 1819 if (mDisplayPowerRequest.wantScreenOnNormal()) { 1820 // If we asked for the screen to be on but it is off due to the proximity 1821 // sensor then we may suspend but only if the configuration allows it. 1822 // On some hardware it may not be safe to suspend because the proximity 1823 // sensor may not be correctly configured as a wake-up source. 1824 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1825 || !mSuspendWhenScreenOffDueToProximityConfig) { 1826 return true; 1827 } 1828 } 1829 // Let the system suspend if the screen is off or dozing. 1830 return false; 1831 } 1832 1833 private void setHalAutoSuspendModeLocked(boolean enable) { 1834 if (enable != mHalAutoSuspendModeEnabled) { 1835 if (DEBUG) { 1836 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 1837 } 1838 mHalAutoSuspendModeEnabled = enable; 1839 nativeSetAutoSuspend(enable); 1840 } 1841 } 1842 1843 private void setHalInteractiveModeLocked(boolean enable) { 1844 if (enable != mHalInteractiveModeEnabled) { 1845 if (DEBUG) { 1846 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 1847 } 1848 mHalInteractiveModeEnabled = enable; 1849 nativeSetInteractive(enable); 1850 } 1851 } 1852 1853 private boolean isInteractiveInternal() { 1854 synchronized (mLock) { 1855 return mInteractive; 1856 } 1857 } 1858 1859 private void handleBatteryStateChangedLocked() { 1860 mDirty |= DIRTY_BATTERY_STATE; 1861 updatePowerStateLocked(); 1862 } 1863 1864 private void startWatchingForBootAnimationFinished() { 1865 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1866 } 1867 1868 private void checkIfBootAnimationFinished() { 1869 if (DEBUG) { 1870 Slog.d(TAG, "Check if boot animation finished..."); 1871 } 1872 1873 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1874 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1875 BOOT_ANIMATION_POLL_INTERVAL); 1876 return; 1877 } 1878 1879 synchronized (mLock) { 1880 if (!mBootCompleted) { 1881 Slog.i(TAG, "Boot animation finished."); 1882 handleBootCompletedLocked(); 1883 } 1884 } 1885 } 1886 1887 private void handleBootCompletedLocked() { 1888 final long now = SystemClock.uptimeMillis(); 1889 mBootCompleted = true; 1890 mDirty |= DIRTY_BOOT_COMPLETED; 1891 userActivityNoUpdateLocked( 1892 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1893 updatePowerStateLocked(); 1894 } 1895 1896 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1897 final String reason, boolean wait) { 1898 if (mHandler == null || !mSystemReady) { 1899 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1900 } 1901 1902 Runnable runnable = new Runnable() { 1903 @Override 1904 public void run() { 1905 synchronized (this) { 1906 if (shutdown) { 1907 ShutdownThread.shutdown(mContext, confirm); 1908 } else { 1909 ShutdownThread.reboot(mContext, reason, confirm); 1910 } 1911 } 1912 } 1913 }; 1914 1915 // ShutdownThread must run on a looper capable of displaying the UI. 1916 Message msg = Message.obtain(mHandler, runnable); 1917 msg.setAsynchronous(true); 1918 mHandler.sendMessage(msg); 1919 1920 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 1921 if (wait) { 1922 synchronized (runnable) { 1923 while (true) { 1924 try { 1925 runnable.wait(); 1926 } catch (InterruptedException e) { 1927 } 1928 } 1929 } 1930 } 1931 } 1932 1933 private void crashInternal(final String message) { 1934 Thread t = new Thread("PowerManagerService.crash()") { 1935 @Override 1936 public void run() { 1937 throw new RuntimeException(message); 1938 } 1939 }; 1940 try { 1941 t.start(); 1942 t.join(); 1943 } catch (InterruptedException e) { 1944 Log.wtf(TAG, e); 1945 } 1946 } 1947 1948 private void setStayOnSettingInternal(int val) { 1949 Settings.Global.putInt(mContext.getContentResolver(), 1950 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 1951 } 1952 1953 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 1954 synchronized (mLock) { 1955 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 1956 mDirty |= DIRTY_SETTINGS; 1957 updatePowerStateLocked(); 1958 } 1959 } 1960 1961 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 1962 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 1963 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 1964 } 1965 1966 private void setAttentionLightInternal(boolean on, int color) { 1967 Light light; 1968 synchronized (mLock) { 1969 if (!mSystemReady) { 1970 return; 1971 } 1972 light = mAttentionLight; 1973 } 1974 1975 // Control light outside of lock. 1976 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 1977 } 1978 1979 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 1980 synchronized (mLock) { 1981 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 1982 mScreenBrightnessOverrideFromWindowManager = brightness; 1983 mDirty |= DIRTY_SETTINGS; 1984 updatePowerStateLocked(); 1985 } 1986 } 1987 } 1988 1989 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 1990 synchronized (mLock) { 1991 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 1992 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 1993 mDirty |= DIRTY_SETTINGS; 1994 updatePowerStateLocked(); 1995 } 1996 } 1997 } 1998 1999 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2000 synchronized (mLock) { 2001 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2002 mTemporaryScreenBrightnessSettingOverride = brightness; 2003 mDirty |= DIRTY_SETTINGS; 2004 updatePowerStateLocked(); 2005 } 2006 } 2007 } 2008 2009 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2010 synchronized (mLock) { 2011 // Note: This condition handles NaN because NaN is not equal to any other 2012 // value, including itself. 2013 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2014 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2015 mDirty |= DIRTY_SETTINGS; 2016 updatePowerStateLocked(); 2017 } 2018 } 2019 } 2020 2021 /** 2022 * Low-level function turn the device off immediately, without trying 2023 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2024 */ 2025 public static void lowLevelShutdown() { 2026 SystemProperties.set("sys.powerctl", "shutdown"); 2027 } 2028 2029 /** 2030 * Low-level function to reboot the device. On success, this 2031 * function doesn't return. If more than 20 seconds passes from 2032 * the time a reboot is requested (120 seconds for reboot to 2033 * recovery), this method returns. 2034 * 2035 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2036 */ 2037 public static void lowLevelReboot(String reason) { 2038 if (reason == null) { 2039 reason = ""; 2040 } 2041 long duration; 2042 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2043 // If we are rebooting to go into recovery, instead of 2044 // setting sys.powerctl directly we'll start the 2045 // pre-recovery service which will do some preparation for 2046 // recovery and then reboot for us. 2047 // 2048 // This preparation can take more than 20 seconds if 2049 // there's a very large update package, so lengthen the 2050 // timeout. 2051 SystemProperties.set("ctl.start", "pre-recovery"); 2052 duration = 120 * 1000L; 2053 } else { 2054 SystemProperties.set("sys.powerctl", "reboot," + reason); 2055 duration = 20 * 1000L; 2056 } 2057 try { 2058 Thread.sleep(duration); 2059 } catch (InterruptedException e) { 2060 Thread.currentThread().interrupt(); 2061 } 2062 } 2063 2064 @Override // Watchdog.Monitor implementation 2065 public void monitor() { 2066 // Grab and release lock for watchdog monitor to detect deadlocks. 2067 synchronized (mLock) { 2068 } 2069 } 2070 2071 private void dumpInternal(PrintWriter pw) { 2072 pw.println("POWER MANAGER (dumpsys power)\n"); 2073 2074 final WirelessChargerDetector wcd; 2075 synchronized (mLock) { 2076 pw.println("Power Manager State:"); 2077 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2078 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2079 pw.println(" mInteractive=" + mInteractive); 2080 pw.println(" mIsPowered=" + mIsPowered); 2081 pw.println(" mPlugType=" + mPlugType); 2082 pw.println(" mBatteryLevel=" + mBatteryLevel); 2083 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2084 pw.println(" mDockState=" + mDockState); 2085 pw.println(" mStayOn=" + mStayOn); 2086 pw.println(" mProximityPositive=" + mProximityPositive); 2087 pw.println(" mBootCompleted=" + mBootCompleted); 2088 pw.println(" mSystemReady=" + mSystemReady); 2089 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2090 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2091 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2092 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2093 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2094 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2095 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2096 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2097 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2098 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2099 pw.println(" mLastUserActivityTimeNoChangeLights=" 2100 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2101 pw.println(" mDisplayReady=" + mDisplayReady); 2102 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2103 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2104 2105 pw.println(); 2106 pw.println("Settings and Configuration:"); 2107 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2108 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2109 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2110 + mDecoupleHalInteractiveModeFromDisplayConfig); 2111 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2112 + mWakeUpWhenPluggedOrUnpluggedConfig); 2113 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2114 + mSuspendWhenScreenOffDueToProximityConfig); 2115 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2116 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2117 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2118 + mDreamsActivatedOnSleepByDefaultConfig); 2119 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2120 + mDreamsActivatedOnDockByDefaultConfig); 2121 pw.println(" mDreamsEnabledOnBatteryConfig=" 2122 + mDreamsEnabledOnBatteryConfig); 2123 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2124 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2125 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2126 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2127 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2128 + mDreamsBatteryLevelDrainCutoffConfig); 2129 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2130 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2131 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2132 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2133 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2134 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2135 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2136 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2137 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2138 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2139 + mScreenAutoBrightnessAdjustmentSetting); 2140 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2141 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2142 + mScreenBrightnessOverrideFromWindowManager); 2143 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2144 + mUserActivityTimeoutOverrideFromWindowManager); 2145 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2146 + mTemporaryScreenBrightnessSettingOverride); 2147 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2148 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2149 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2150 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2151 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2152 2153 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2154 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2155 pw.println(); 2156 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2157 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2158 2159 pw.println(); 2160 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2161 for (WakeLock wl : mWakeLocks) { 2162 pw.println(" " + wl); 2163 } 2164 2165 pw.println(); 2166 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2167 for (SuspendBlocker sb : mSuspendBlockers) { 2168 pw.println(" " + sb); 2169 } 2170 2171 pw.println(); 2172 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2173 2174 pw.println(); 2175 pw.println("Display Power: " + mDisplayPowerCallbacks); 2176 2177 wcd = mWirelessChargerDetector; 2178 } 2179 2180 if (wcd != null) { 2181 wcd.dump(pw); 2182 } 2183 } 2184 2185 private SuspendBlocker createSuspendBlockerLocked(String name) { 2186 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2187 mSuspendBlockers.add(suspendBlocker); 2188 return suspendBlocker; 2189 } 2190 2191 private static String wakefulnessToString(int wakefulness) { 2192 switch (wakefulness) { 2193 case WAKEFULNESS_ASLEEP: 2194 return "Asleep"; 2195 case WAKEFULNESS_AWAKE: 2196 return "Awake"; 2197 case WAKEFULNESS_DREAMING: 2198 return "Dreaming"; 2199 case WAKEFULNESS_DOZING: 2200 return "Dozing"; 2201 default: 2202 return Integer.toString(wakefulness); 2203 } 2204 } 2205 2206 private static WorkSource copyWorkSource(WorkSource workSource) { 2207 return workSource != null ? new WorkSource(workSource) : null; 2208 } 2209 2210 private final class BatteryReceiver extends BroadcastReceiver { 2211 @Override 2212 public void onReceive(Context context, Intent intent) { 2213 synchronized (mLock) { 2214 handleBatteryStateChangedLocked(); 2215 } 2216 } 2217 } 2218 2219 private final class BootCompletedReceiver extends BroadcastReceiver { 2220 @Override 2221 public void onReceive(Context context, Intent intent) { 2222 // This is our early signal that the system thinks it has finished booting. 2223 // However, the boot animation may still be running for a few more seconds 2224 // since it is ultimately in charge of when it terminates. 2225 // Defer transitioning into the boot completed state until the animation exits. 2226 // We do this so that the screen does not start to dim prematurely before 2227 // the user has actually had a chance to interact with the device. 2228 startWatchingForBootAnimationFinished(); 2229 } 2230 } 2231 2232 private final class DreamReceiver extends BroadcastReceiver { 2233 @Override 2234 public void onReceive(Context context, Intent intent) { 2235 synchronized (mLock) { 2236 scheduleSandmanLocked(); 2237 } 2238 } 2239 } 2240 2241 private final class UserSwitchedReceiver extends BroadcastReceiver { 2242 @Override 2243 public void onReceive(Context context, Intent intent) { 2244 synchronized (mLock) { 2245 handleSettingsChangedLocked(); 2246 } 2247 } 2248 } 2249 2250 private final class DockReceiver extends BroadcastReceiver { 2251 @Override 2252 public void onReceive(Context context, Intent intent) { 2253 synchronized (mLock) { 2254 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2255 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2256 if (mDockState != dockState) { 2257 mDockState = dockState; 2258 mDirty |= DIRTY_DOCK_STATE; 2259 updatePowerStateLocked(); 2260 } 2261 } 2262 } 2263 } 2264 2265 private final class SettingsObserver extends ContentObserver { 2266 public SettingsObserver(Handler handler) { 2267 super(handler); 2268 } 2269 2270 @Override 2271 public void onChange(boolean selfChange, Uri uri) { 2272 synchronized (mLock) { 2273 handleSettingsChangedLocked(); 2274 } 2275 } 2276 } 2277 2278 /** 2279 * Handler for asynchronous operations performed by the power manager. 2280 */ 2281 private final class PowerManagerHandler extends Handler { 2282 public PowerManagerHandler(Looper looper) { 2283 super(looper, null, true /*async*/); 2284 } 2285 2286 @Override 2287 public void handleMessage(Message msg) { 2288 switch (msg.what) { 2289 case MSG_USER_ACTIVITY_TIMEOUT: 2290 handleUserActivityTimeout(); 2291 break; 2292 case MSG_SANDMAN: 2293 handleSandman(); 2294 break; 2295 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2296 handleScreenOnBlockerReleased(); 2297 break; 2298 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2299 checkIfBootAnimationFinished(); 2300 break; 2301 } 2302 } 2303 } 2304 2305 /** 2306 * Represents a wake lock that has been acquired by an application. 2307 */ 2308 private final class WakeLock implements IBinder.DeathRecipient { 2309 public final IBinder mLock; 2310 public int mFlags; 2311 public String mTag; 2312 public final String mPackageName; 2313 public WorkSource mWorkSource; 2314 public String mHistoryTag; 2315 public final int mOwnerUid; 2316 public final int mOwnerPid; 2317 public boolean mNotifiedAcquired; 2318 2319 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2320 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2321 mLock = lock; 2322 mFlags = flags; 2323 mTag = tag; 2324 mPackageName = packageName; 2325 mWorkSource = copyWorkSource(workSource); 2326 mHistoryTag = historyTag; 2327 mOwnerUid = ownerUid; 2328 mOwnerPid = ownerPid; 2329 } 2330 2331 @Override 2332 public void binderDied() { 2333 PowerManagerService.this.handleWakeLockDeath(this); 2334 } 2335 2336 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2337 int ownerUid, int ownerPid) { 2338 return mFlags == flags 2339 && mTag.equals(tag) 2340 && hasSameWorkSource(workSource) 2341 && mOwnerUid == ownerUid 2342 && mOwnerPid == ownerPid; 2343 } 2344 2345 public void updateProperties(int flags, String tag, String packageName, 2346 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2347 if (!mPackageName.equals(packageName)) { 2348 throw new IllegalStateException("Existing wake lock package name changed: " 2349 + mPackageName + " to " + packageName); 2350 } 2351 if (mOwnerUid != ownerUid) { 2352 throw new IllegalStateException("Existing wake lock uid changed: " 2353 + mOwnerUid + " to " + ownerUid); 2354 } 2355 if (mOwnerPid != ownerPid) { 2356 throw new IllegalStateException("Existing wake lock pid changed: " 2357 + mOwnerPid + " to " + ownerPid); 2358 } 2359 mFlags = flags; 2360 mTag = tag; 2361 updateWorkSource(workSource); 2362 mHistoryTag = historyTag; 2363 } 2364 2365 public boolean hasSameWorkSource(WorkSource workSource) { 2366 return Objects.equal(mWorkSource, workSource); 2367 } 2368 2369 public void updateWorkSource(WorkSource workSource) { 2370 mWorkSource = copyWorkSource(workSource); 2371 } 2372 2373 @Override 2374 public String toString() { 2375 return getLockLevelString() 2376 + " '" + mTag + "'" + getLockFlagsString() 2377 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2378 } 2379 2380 @SuppressWarnings("deprecation") 2381 private String getLockLevelString() { 2382 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2383 case PowerManager.FULL_WAKE_LOCK: 2384 return "FULL_WAKE_LOCK "; 2385 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2386 return "SCREEN_BRIGHT_WAKE_LOCK "; 2387 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2388 return "SCREEN_DIM_WAKE_LOCK "; 2389 case PowerManager.PARTIAL_WAKE_LOCK: 2390 return "PARTIAL_WAKE_LOCK "; 2391 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2392 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2393 case PowerManager.DOZE_WAKE_LOCK: 2394 return "DOZE_WAKE_LOCK "; 2395 default: 2396 return "??? "; 2397 } 2398 } 2399 2400 private String getLockFlagsString() { 2401 String result = ""; 2402 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2403 result += " ACQUIRE_CAUSES_WAKEUP"; 2404 } 2405 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2406 result += " ON_AFTER_RELEASE"; 2407 } 2408 return result; 2409 } 2410 } 2411 2412 private final class SuspendBlockerImpl implements SuspendBlocker { 2413 private final String mName; 2414 private int mReferenceCount; 2415 2416 public SuspendBlockerImpl(String name) { 2417 mName = name; 2418 } 2419 2420 @Override 2421 protected void finalize() throws Throwable { 2422 try { 2423 if (mReferenceCount != 0) { 2424 Log.wtf(TAG, "Suspend blocker \"" + mName 2425 + "\" was finalized without being released!"); 2426 mReferenceCount = 0; 2427 nativeReleaseSuspendBlocker(mName); 2428 } 2429 } finally { 2430 super.finalize(); 2431 } 2432 } 2433 2434 @Override 2435 public void acquire() { 2436 synchronized (this) { 2437 mReferenceCount += 1; 2438 if (mReferenceCount == 1) { 2439 if (DEBUG_SPEW) { 2440 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2441 } 2442 nativeAcquireSuspendBlocker(mName); 2443 } 2444 } 2445 } 2446 2447 @Override 2448 public void release() { 2449 synchronized (this) { 2450 mReferenceCount -= 1; 2451 if (mReferenceCount == 0) { 2452 if (DEBUG_SPEW) { 2453 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2454 } 2455 nativeReleaseSuspendBlocker(mName); 2456 } else if (mReferenceCount < 0) { 2457 Log.wtf(TAG, "Suspend blocker \"" + mName 2458 + "\" was released without being acquired!", new Throwable()); 2459 mReferenceCount = 0; 2460 } 2461 } 2462 } 2463 2464 @Override 2465 public String toString() { 2466 synchronized (this) { 2467 return mName + ": ref count=" + mReferenceCount; 2468 } 2469 } 2470 } 2471 2472 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2473 private int mNestCount; 2474 2475 public boolean isHeld() { 2476 synchronized (this) { 2477 return mNestCount != 0; 2478 } 2479 } 2480 2481 @Override 2482 public void acquire() { 2483 synchronized (this) { 2484 mNestCount += 1; 2485 if (DEBUG) { 2486 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2487 } 2488 } 2489 } 2490 2491 @Override 2492 public void release() { 2493 synchronized (this) { 2494 mNestCount -= 1; 2495 if (mNestCount < 0) { 2496 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2497 new Throwable()); 2498 mNestCount = 0; 2499 } 2500 if (mNestCount == 0) { 2501 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2502 } 2503 if (DEBUG) { 2504 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2505 } 2506 } 2507 } 2508 2509 @Override 2510 public String toString() { 2511 synchronized (this) { 2512 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2513 } 2514 } 2515 } 2516 2517 private final class BinderService extends IPowerManager.Stub { 2518 @Override // Binder call 2519 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2520 String packageName, int uid) { 2521 if (uid < 0) { 2522 uid = Binder.getCallingUid(); 2523 } 2524 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2525 } 2526 2527 @Override // Binder call 2528 public void powerHint(int hintId, int data) { 2529 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2530 nativeSendPowerHint(hintId, data); 2531 } 2532 2533 @Override // Binder call 2534 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2535 WorkSource ws, String historyTag) { 2536 if (lock == null) { 2537 throw new IllegalArgumentException("lock must not be null"); 2538 } 2539 if (packageName == null) { 2540 throw new IllegalArgumentException("packageName must not be null"); 2541 } 2542 PowerManager.validateWakeLockParameters(flags, tag); 2543 2544 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2545 if (ws != null && ws.size() != 0) { 2546 mContext.enforceCallingOrSelfPermission( 2547 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2548 } else { 2549 ws = null; 2550 } 2551 2552 final int uid = Binder.getCallingUid(); 2553 final int pid = Binder.getCallingPid(); 2554 final long ident = Binder.clearCallingIdentity(); 2555 try { 2556 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2557 } finally { 2558 Binder.restoreCallingIdentity(ident); 2559 } 2560 } 2561 2562 @Override // Binder call 2563 public void releaseWakeLock(IBinder lock, int flags) { 2564 if (lock == null) { 2565 throw new IllegalArgumentException("lock must not be null"); 2566 } 2567 2568 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2569 2570 final long ident = Binder.clearCallingIdentity(); 2571 try { 2572 releaseWakeLockInternal(lock, flags); 2573 } finally { 2574 Binder.restoreCallingIdentity(ident); 2575 } 2576 } 2577 2578 @Override // Binder call 2579 public void updateWakeLockUids(IBinder lock, int[] uids) { 2580 WorkSource ws = null; 2581 2582 if (uids != null) { 2583 ws = new WorkSource(); 2584 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2585 // one at a time? 2586 for (int i = 0; i < uids.length; i++) { 2587 ws.add(uids[i]); 2588 } 2589 } 2590 updateWakeLockWorkSource(lock, ws, null); 2591 } 2592 2593 @Override // Binder call 2594 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2595 if (lock == null) { 2596 throw new IllegalArgumentException("lock must not be null"); 2597 } 2598 2599 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2600 if (ws != null && ws.size() != 0) { 2601 mContext.enforceCallingOrSelfPermission( 2602 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2603 } else { 2604 ws = null; 2605 } 2606 2607 final long ident = Binder.clearCallingIdentity(); 2608 try { 2609 updateWakeLockWorkSourceInternal(lock, ws, historyTag); 2610 } finally { 2611 Binder.restoreCallingIdentity(ident); 2612 } 2613 } 2614 2615 @Override // Binder call 2616 public boolean isWakeLockLevelSupported(int level) { 2617 final long ident = Binder.clearCallingIdentity(); 2618 try { 2619 return isWakeLockLevelSupportedInternal(level); 2620 } finally { 2621 Binder.restoreCallingIdentity(ident); 2622 } 2623 } 2624 2625 @Override // Binder call 2626 public void userActivity(long eventTime, int event, int flags) { 2627 final long now = SystemClock.uptimeMillis(); 2628 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2629 != PackageManager.PERMISSION_GRANTED) { 2630 // Once upon a time applications could call userActivity(). 2631 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2632 // request instead of throwing a SecurityException so we don't break old apps. 2633 synchronized (mLock) { 2634 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2635 mLastWarningAboutUserActivityPermission = now; 2636 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2637 + "caller does not have DEVICE_POWER permission. " 2638 + "Please fix your app! " 2639 + " pid=" + Binder.getCallingPid() 2640 + " uid=" + Binder.getCallingUid()); 2641 } 2642 } 2643 return; 2644 } 2645 2646 if (eventTime > SystemClock.uptimeMillis()) { 2647 throw new IllegalArgumentException("event time must not be in the future"); 2648 } 2649 2650 final int uid = Binder.getCallingUid(); 2651 final long ident = Binder.clearCallingIdentity(); 2652 try { 2653 userActivityInternal(eventTime, event, flags, uid); 2654 } finally { 2655 Binder.restoreCallingIdentity(ident); 2656 } 2657 } 2658 2659 @Override // Binder call 2660 public void wakeUp(long eventTime) { 2661 if (eventTime > SystemClock.uptimeMillis()) { 2662 throw new IllegalArgumentException("event time must not be in the future"); 2663 } 2664 2665 mContext.enforceCallingOrSelfPermission( 2666 android.Manifest.permission.DEVICE_POWER, null); 2667 2668 final long ident = Binder.clearCallingIdentity(); 2669 try { 2670 wakeUpInternal(eventTime); 2671 } finally { 2672 Binder.restoreCallingIdentity(ident); 2673 } 2674 } 2675 2676 @Override // Binder call 2677 public void goToSleep(long eventTime, int reason) { 2678 if (eventTime > SystemClock.uptimeMillis()) { 2679 throw new IllegalArgumentException("event time must not be in the future"); 2680 } 2681 2682 mContext.enforceCallingOrSelfPermission( 2683 android.Manifest.permission.DEVICE_POWER, null); 2684 2685 final long ident = Binder.clearCallingIdentity(); 2686 try { 2687 goToSleepInternal(eventTime, reason); 2688 } finally { 2689 Binder.restoreCallingIdentity(ident); 2690 } 2691 } 2692 2693 @Override // Binder call 2694 public void nap(long eventTime) { 2695 if (eventTime > SystemClock.uptimeMillis()) { 2696 throw new IllegalArgumentException("event time must not be in the future"); 2697 } 2698 2699 mContext.enforceCallingOrSelfPermission( 2700 android.Manifest.permission.DEVICE_POWER, null); 2701 2702 final long ident = Binder.clearCallingIdentity(); 2703 try { 2704 napInternal(eventTime); 2705 } finally { 2706 Binder.restoreCallingIdentity(ident); 2707 } 2708 } 2709 2710 @Override // Binder call 2711 public boolean isInteractive() { 2712 final long ident = Binder.clearCallingIdentity(); 2713 try { 2714 return isInteractiveInternal(); 2715 } finally { 2716 Binder.restoreCallingIdentity(ident); 2717 } 2718 } 2719 2720 /** 2721 * Reboots the device. 2722 * 2723 * @param confirm If true, shows a reboot confirmation dialog. 2724 * @param reason The reason for the reboot, or null if none. 2725 * @param wait If true, this call waits for the reboot to complete and does not return. 2726 */ 2727 @Override // Binder call 2728 public void reboot(boolean confirm, String reason, boolean wait) { 2729 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2730 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2731 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2732 } 2733 2734 final long ident = Binder.clearCallingIdentity(); 2735 try { 2736 shutdownOrRebootInternal(false, confirm, reason, wait); 2737 } finally { 2738 Binder.restoreCallingIdentity(ident); 2739 } 2740 } 2741 2742 /** 2743 * Shuts down the device. 2744 * 2745 * @param confirm If true, shows a shutdown confirmation dialog. 2746 * @param wait If true, this call waits for the shutdown to complete and does not return. 2747 */ 2748 @Override // Binder call 2749 public void shutdown(boolean confirm, boolean wait) { 2750 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2751 2752 final long ident = Binder.clearCallingIdentity(); 2753 try { 2754 shutdownOrRebootInternal(true, confirm, null, wait); 2755 } finally { 2756 Binder.restoreCallingIdentity(ident); 2757 } 2758 } 2759 2760 /** 2761 * Crash the runtime (causing a complete restart of the Android framework). 2762 * Requires REBOOT permission. Mostly for testing. Should not return. 2763 */ 2764 @Override // Binder call 2765 public void crash(String message) { 2766 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2767 2768 final long ident = Binder.clearCallingIdentity(); 2769 try { 2770 crashInternal(message); 2771 } finally { 2772 Binder.restoreCallingIdentity(ident); 2773 } 2774 } 2775 2776 /** 2777 * Set the setting that determines whether the device stays on when plugged in. 2778 * The argument is a bit string, with each bit specifying a power source that, 2779 * when the device is connected to that source, causes the device to stay on. 2780 * See {@link android.os.BatteryManager} for the list of power sources that 2781 * can be specified. Current values include 2782 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2783 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2784 * 2785 * Used by "adb shell svc power stayon ..." 2786 * 2787 * @param val an {@code int} containing the bits that specify which power sources 2788 * should cause the device to stay on. 2789 */ 2790 @Override // Binder call 2791 public void setStayOnSetting(int val) { 2792 mContext.enforceCallingOrSelfPermission( 2793 android.Manifest.permission.WRITE_SETTINGS, null); 2794 2795 final long ident = Binder.clearCallingIdentity(); 2796 try { 2797 setStayOnSettingInternal(val); 2798 } finally { 2799 Binder.restoreCallingIdentity(ident); 2800 } 2801 } 2802 2803 /** 2804 * Used by device administration to set the maximum screen off timeout. 2805 * 2806 * This method must only be called by the device administration policy manager. 2807 */ 2808 @Override // Binder call 2809 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2810 final long ident = Binder.clearCallingIdentity(); 2811 try { 2812 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2813 } finally { 2814 Binder.restoreCallingIdentity(ident); 2815 } 2816 } 2817 2818 /** 2819 * Used by the settings application and brightness control widgets to 2820 * temporarily override the current screen brightness setting so that the 2821 * user can observe the effect of an intended settings change without applying 2822 * it immediately. 2823 * 2824 * The override will be canceled when the setting value is next updated. 2825 * 2826 * @param brightness The overridden brightness. 2827 * 2828 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2829 */ 2830 @Override // Binder call 2831 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2832 mContext.enforceCallingOrSelfPermission( 2833 android.Manifest.permission.DEVICE_POWER, null); 2834 2835 final long ident = Binder.clearCallingIdentity(); 2836 try { 2837 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2838 } finally { 2839 Binder.restoreCallingIdentity(ident); 2840 } 2841 } 2842 2843 /** 2844 * Used by the settings application and brightness control widgets to 2845 * temporarily override the current screen auto-brightness adjustment setting so that the 2846 * user can observe the effect of an intended settings change without applying 2847 * it immediately. 2848 * 2849 * The override will be canceled when the setting value is next updated. 2850 * 2851 * @param adj The overridden brightness, or Float.NaN to disable the override. 2852 * 2853 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2854 */ 2855 @Override // Binder call 2856 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2857 mContext.enforceCallingOrSelfPermission( 2858 android.Manifest.permission.DEVICE_POWER, null); 2859 2860 final long ident = Binder.clearCallingIdentity(); 2861 try { 2862 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2863 } finally { 2864 Binder.restoreCallingIdentity(ident); 2865 } 2866 } 2867 2868 /** 2869 * Used by the phone application to make the attention LED flash when ringing. 2870 */ 2871 @Override // Binder call 2872 public void setAttentionLight(boolean on, int color) { 2873 mContext.enforceCallingOrSelfPermission( 2874 android.Manifest.permission.DEVICE_POWER, null); 2875 2876 final long ident = Binder.clearCallingIdentity(); 2877 try { 2878 setAttentionLightInternal(on, color); 2879 } finally { 2880 Binder.restoreCallingIdentity(ident); 2881 } 2882 } 2883 2884 @Override // Binder call 2885 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2886 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2887 != PackageManager.PERMISSION_GRANTED) { 2888 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2889 + Binder.getCallingPid() 2890 + ", uid=" + Binder.getCallingUid()); 2891 return; 2892 } 2893 2894 final long ident = Binder.clearCallingIdentity(); 2895 try { 2896 dumpInternal(pw); 2897 } finally { 2898 Binder.restoreCallingIdentity(ident); 2899 } 2900 } 2901 } 2902 2903 private final class LocalService extends PowerManagerInternal { 2904 /** 2905 * Used by the window manager to override the screen brightness based on the 2906 * current foreground activity. 2907 * 2908 * This method must only be called by the window manager. 2909 * 2910 * @param brightness The overridden brightness, or -1 to disable the override. 2911 */ 2912 @Override 2913 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 2914 mContext.enforceCallingOrSelfPermission( 2915 android.Manifest.permission.DEVICE_POWER, null); 2916 2917 final long ident = Binder.clearCallingIdentity(); 2918 try { 2919 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 2920 } finally { 2921 Binder.restoreCallingIdentity(ident); 2922 } 2923 } 2924 2925 /** 2926 * Used by the window manager to override the button brightness based on the 2927 * current foreground activity. 2928 * 2929 * This method must only be called by the window manager. 2930 * 2931 * @param brightness The overridden brightness, or -1 to disable the override. 2932 */ 2933 @Override 2934 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 2935 // Do nothing. 2936 // Button lights are not currently supported in the new implementation. 2937 mContext.enforceCallingOrSelfPermission( 2938 android.Manifest.permission.DEVICE_POWER, null); 2939 } 2940 2941 /** 2942 * Used by the window manager to override the user activity timeout based on the 2943 * current foreground activity. It can only be used to make the timeout shorter 2944 * than usual, not longer. 2945 * 2946 * This method must only be called by the window manager. 2947 * 2948 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 2949 */ 2950 @Override 2951 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 2952 mContext.enforceCallingOrSelfPermission( 2953 android.Manifest.permission.DEVICE_POWER, null); 2954 2955 final long ident = Binder.clearCallingIdentity(); 2956 try { 2957 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 2958 } finally { 2959 Binder.restoreCallingIdentity(ident); 2960 } 2961 } 2962 2963 @Override 2964 public void setPolicy(WindowManagerPolicy policy) { 2965 PowerManagerService.this.setPolicy(policy); 2966 } 2967 } 2968} 2969