PowerManagerService.java revision 14272302a8b635bd8e9267c1411d0a7ef11bff45
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.internal.os.BackgroundThread; 22import com.android.server.BatteryService; 23import com.android.server.EventLogTags; 24import com.android.server.LocalServices; 25import com.android.server.ServiceThread; 26import com.android.server.lights.Light; 27import com.android.server.lights.LightsManager; 28import com.android.server.Watchdog; 29 30import android.Manifest; 31import android.content.BroadcastReceiver; 32import android.content.ContentResolver; 33import android.content.Context; 34import android.content.Intent; 35import android.content.IntentFilter; 36import android.content.pm.PackageManager; 37import android.content.res.Resources; 38import android.database.ContentObserver; 39import android.hardware.SensorManager; 40import android.hardware.SystemSensorManager; 41import android.hardware.display.DisplayManagerInternal; 42import android.hardware.display.DisplayManagerInternal.DisplayPowerRequest; 43import android.net.Uri; 44import android.os.BatteryManager; 45import android.os.Binder; 46import android.os.Handler; 47import android.os.IBinder; 48import android.os.IPowerManager; 49import android.os.Looper; 50import android.os.Message; 51import android.os.PowerManager; 52import android.os.PowerManagerInternal; 53import android.os.Process; 54import android.os.RemoteException; 55import android.os.SystemClock; 56import android.os.SystemProperties; 57import android.os.SystemService; 58import android.os.UserHandle; 59import android.os.WorkSource; 60import android.provider.Settings; 61import android.service.dreams.DreamManagerInternal; 62import android.util.EventLog; 63import android.util.Log; 64import android.util.Slog; 65import android.util.TimeUtils; 66import android.view.Display; 67import android.view.WindowManagerPolicy; 68 69import java.io.FileDescriptor; 70import java.io.PrintWriter; 71import java.util.ArrayList; 72 73import libcore.util.Objects; 74 75/** 76 * The power manager service is responsible for coordinating power management 77 * functions on the device. 78 */ 79public final class PowerManagerService extends com.android.server.SystemService 80 implements Watchdog.Monitor { 81 private static final String TAG = "PowerManagerService"; 82 83 private static final boolean DEBUG = false; 84 private static final boolean DEBUG_SPEW = DEBUG && true; 85 86 // Message: Sent when a user activity timeout occurs to update the power state. 87 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 88 // Message: Sent when the device enters or exits a dreaming or dozing state. 89 private static final int MSG_SANDMAN = 2; 90 // Message: Sent when the screen on blocker is released. 91 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 92 // Message: Sent to poll whether the boot animation has terminated. 93 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 94 95 // Dirty bit: mWakeLocks changed 96 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 97 // Dirty bit: mWakefulness changed 98 private static final int DIRTY_WAKEFULNESS = 1 << 1; 99 // Dirty bit: user activity was poked or may have timed out 100 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 101 // Dirty bit: actual display power state was updated asynchronously 102 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 103 // Dirty bit: mBootCompleted changed 104 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 105 // Dirty bit: settings changed 106 private static final int DIRTY_SETTINGS = 1 << 5; 107 // Dirty bit: mIsPowered changed 108 private static final int DIRTY_IS_POWERED = 1 << 6; 109 // Dirty bit: mStayOn changed 110 private static final int DIRTY_STAY_ON = 1 << 7; 111 // Dirty bit: battery state changed 112 private static final int DIRTY_BATTERY_STATE = 1 << 8; 113 // Dirty bit: proximity state changed 114 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 115 // Dirty bit: screen on blocker state became held or unheld 116 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 117 // Dirty bit: dock state changed 118 private static final int DIRTY_DOCK_STATE = 1 << 11; 119 120 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 121 // The screen should be off or in the process of being turned off by the display controller. 122 // The device typically passes through the dozing state first. 123 private static final int WAKEFULNESS_ASLEEP = 0; 124 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 125 // When the user activity timeout expires, the device may start dreaming or go to sleep. 126 private static final int WAKEFULNESS_AWAKE = 1; 127 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 128 // which ends the dream. The device goes to sleep when goToSleep() is called, when 129 // the dream ends or when unplugged. 130 // User activity may brighten the screen but does not end the dream. 131 private static final int WAKEFULNESS_DREAMING = 2; 132 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 133 // low-power "doze" dream to run which keeps the display on but lets the application 134 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 135 // The device fully goes to sleep if the dream cannot be started or ends on its own. 136 private static final int WAKEFULNESS_DOZING = 3; 137 138 // Summarizes the state of all active wakelocks. 139 private static final int WAKE_LOCK_CPU = 1 << 0; 140 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 141 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 142 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 143 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 144 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 145 private static final int WAKE_LOCK_DOZE = 1 << 6; 146 147 // Summarizes the user activity state. 148 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 149 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 150 151 // Default timeout in milliseconds. This is only used until the settings 152 // provider populates the actual default value (R.integer.def_screen_off_timeout). 153 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 154 155 // The name of the boot animation service in init.rc. 156 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 157 158 // Poll interval in milliseconds for watching boot animation finished. 159 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 160 161 // Used to send the hint to the PowerHAL indicating transitions 162 // from and to the low power mode. 163 private static final int POWER_HINT_LOW_POWER_MODE = 5; 164 165 private final Context mContext; 166 private LightsManager mLightsManager; 167 private BatteryService mBatteryService; 168 private DisplayManagerInternal mDisplayManagerInternal; 169 private IBatteryStats mBatteryStats; 170 private IAppOpsService mAppOps; 171 private ServiceThread mHandlerThread; 172 private PowerManagerHandler mHandler; 173 private WindowManagerPolicy mPolicy; 174 private Notifier mNotifier; 175 private WirelessChargerDetector mWirelessChargerDetector; 176 private SettingsObserver mSettingsObserver; 177 private DreamManagerInternal mDreamManager; 178 private Light mAttentionLight; 179 180 private final Object mLock = new Object(); 181 182 // A bitfield that indicates what parts of the power state have 183 // changed and need to be recalculated. 184 private int mDirty; 185 186 // Indicates whether the device is awake or asleep or somewhere in between. 187 // This is distinct from the screen power state, which is managed separately. 188 private int mWakefulness; 189 190 // True if the sandman has just been summoned for the first time since entering the 191 // dreaming or dozing state. Indicates whether a new dream should begin. 192 private boolean mSandmanSummoned; 193 194 // True if MSG_SANDMAN has been scheduled. 195 private boolean mSandmanScheduled; 196 197 // Table of all suspend blockers. 198 // There should only be a few of these. 199 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 200 201 // Table of all wake locks acquired by applications. 202 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 203 204 // A bitfield that summarizes the state of all active wakelocks. 205 private int mWakeLockSummary; 206 207 // True if the device is in an interactive state. 208 private boolean mInteractive; 209 private boolean mInteractiveChanging; 210 211 // If true, instructs the display controller to wait for the proximity sensor to 212 // go negative before turning the screen on. 213 private boolean mRequestWaitForNegativeProximity; 214 215 // Timestamp of the last time the device was awoken or put to sleep. 216 private long mLastWakeTime; 217 private long mLastSleepTime; 218 219 // Timestamp of the last call to user activity. 220 private long mLastUserActivityTime; 221 private long mLastUserActivityTimeNoChangeLights; 222 223 // A bitfield that summarizes the effect of the user activity timer. 224 // A zero value indicates that the user activity timer has expired. 225 private int mUserActivitySummary; 226 227 // The desired display power state. The actual state may lag behind the 228 // requested because it is updated asynchronously by the display power controller. 229 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 230 231 // True if the display power state has been fully applied, which means the display 232 // is actually on or actually off or whatever was requested. 233 private boolean mDisplayReady; 234 235 // The suspend blocker used to keep the CPU alive when an application has acquired 236 // a wake lock. 237 private final SuspendBlocker mWakeLockSuspendBlocker; 238 239 // True if the wake lock suspend blocker has been acquired. 240 private boolean mHoldingWakeLockSuspendBlocker; 241 242 // The suspend blocker used to keep the CPU alive when the display is on, the 243 // display is getting ready or there is user activity (in which case the display 244 // must be on). 245 private final SuspendBlocker mDisplaySuspendBlocker; 246 247 // True if the display suspend blocker has been acquired. 248 private boolean mHoldingDisplaySuspendBlocker; 249 250 // The screen on blocker used to keep the screen from turning on while the lock 251 // screen is coming up. 252 private final ScreenOnBlockerImpl mScreenOnBlocker; 253 254 // True if systemReady() has been called. 255 private boolean mSystemReady; 256 257 // True if boot completed occurred. We keep the screen on until this happens. 258 private boolean mBootCompleted; 259 260 // True if auto-suspend mode is enabled. 261 // Refer to autosuspend.h. 262 private boolean mHalAutoSuspendModeEnabled; 263 264 // True if interactive mode is enabled. 265 // Refer to power.h. 266 private boolean mHalInteractiveModeEnabled; 267 268 // True if the device is plugged into a power source. 269 private boolean mIsPowered; 270 271 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 272 private int mPlugType; 273 274 // The current battery level percentage. 275 private int mBatteryLevel; 276 277 // The battery level percentage at the time the dream started. 278 // This is used to terminate a dream and go to sleep if the battery is 279 // draining faster than it is charging and the user activity timeout has expired. 280 private int mBatteryLevelWhenDreamStarted; 281 282 // The current dock state. 283 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 284 285 // True to decouple auto-suspend mode from the display state. 286 private boolean mDecoupleHalAutoSuspendModeFromDisplayConfig; 287 288 // True to decouple interactive mode from the display state. 289 private boolean mDecoupleHalInteractiveModeFromDisplayConfig; 290 291 // True if the device should wake up when plugged or unplugged. 292 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 293 294 // True if the device should suspend when the screen is off due to proximity. 295 private boolean mSuspendWhenScreenOffDueToProximityConfig; 296 297 // True if dreams are supported on this device. 298 private boolean mDreamsSupportedConfig; 299 300 // Default value for dreams enabled 301 private boolean mDreamsEnabledByDefaultConfig; 302 303 // Default value for dreams activate-on-sleep 304 private boolean mDreamsActivatedOnSleepByDefaultConfig; 305 306 // Default value for dreams activate-on-dock 307 private boolean mDreamsActivatedOnDockByDefaultConfig; 308 309 // True if dreams can run while not plugged in. 310 private boolean mDreamsEnabledOnBatteryConfig; 311 312 // Minimum battery level to allow dreaming when powered. 313 // Use -1 to disable this safety feature. 314 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 315 316 // Minimum battery level to allow dreaming when not powered. 317 // Use -1 to disable this safety feature. 318 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 319 320 // If the battery level drops by this percentage and the user activity timeout 321 // has expired, then assume the device is receiving insufficient current to charge 322 // effectively and terminate the dream. Use -1 to disable this safety feature. 323 private int mDreamsBatteryLevelDrainCutoffConfig; 324 325 // True if dreams are enabled by the user. 326 private boolean mDreamsEnabledSetting; 327 328 // True if dreams should be activated on sleep. 329 private boolean mDreamsActivateOnSleepSetting; 330 331 // True if dreams should be activated on dock. 332 private boolean mDreamsActivateOnDockSetting; 333 334 // The minimum screen off timeout, in milliseconds. 335 private int mMinimumScreenOffTimeoutConfig; 336 337 // The screen dim duration, in milliseconds. 338 // This is subtracted from the end of the screen off timeout so the 339 // minimum screen off timeout should be longer than this. 340 private int mMaximumScreenDimDurationConfig; 341 342 // The maximum screen dim time expressed as a ratio relative to the screen 343 // off timeout. If the screen off timeout is very short then we want the 344 // dim timeout to also be quite short so that most of the time is spent on. 345 // Otherwise the user won't get much screen on time before dimming occurs. 346 private float mMaximumScreenDimRatioConfig; 347 348 // The screen off timeout setting value in milliseconds. 349 private int mScreenOffTimeoutSetting; 350 351 // The maximum allowable screen off timeout according to the device 352 // administration policy. Overrides other settings. 353 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 354 355 // The stay on while plugged in setting. 356 // A bitfield of battery conditions under which to make the screen stay on. 357 private int mStayOnWhilePluggedInSetting; 358 359 // True if the device should stay on. 360 private boolean mStayOn; 361 362 // True if the proximity sensor reads a positive result. 363 private boolean mProximityPositive; 364 365 // Screen brightness setting limits. 366 private int mScreenBrightnessSettingMinimum; 367 private int mScreenBrightnessSettingMaximum; 368 private int mScreenBrightnessSettingDefault; 369 370 // The screen brightness setting, from 0 to 255. 371 // Use -1 if no value has been set. 372 private int mScreenBrightnessSetting; 373 374 // The screen auto-brightness adjustment setting, from -1 to 1. 375 // Use 0 if there is no adjustment. 376 private float mScreenAutoBrightnessAdjustmentSetting; 377 378 // The screen brightness mode. 379 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 380 private int mScreenBrightnessModeSetting; 381 382 // The screen brightness setting override from the window manager 383 // to allow the current foreground activity to override the brightness. 384 // Use -1 to disable. 385 private int mScreenBrightnessOverrideFromWindowManager = -1; 386 387 // The user activity timeout override from the window manager 388 // to allow the current foreground activity to override the user activity timeout. 389 // Use -1 to disable. 390 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 391 392 // The screen brightness setting override from the settings application 393 // to temporarily adjust the brightness until next updated, 394 // Use -1 to disable. 395 private int mTemporaryScreenBrightnessSettingOverride = -1; 396 397 // The screen brightness adjustment setting override from the settings 398 // application to temporarily adjust the auto-brightness adjustment factor 399 // until next updated, in the range -1..1. 400 // Use NaN to disable. 401 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 402 403 // Time when we last logged a warning about calling userActivity() without permission. 404 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 405 406 // If true, the device is in low power mode. 407 private boolean mLowPowerModeEnabled; 408 409 // Current state of the low power mode setting. 410 private boolean mLowPowerModeSetting; 411 412 // Current state of whether the settings are allowing auto low power mode. 413 private boolean mAutoLowPowerModeEnabled; 414 415 // True if the battery level is currently considered low. 416 private boolean mBatteryLevelLow; 417 418 private final ArrayList<PowerManagerInternal.LowPowerModeListener> mLowPowerModeListeners 419 = new ArrayList<PowerManagerInternal.LowPowerModeListener>(); 420 421 private native void nativeInit(); 422 423 private static native void nativeAcquireSuspendBlocker(String name); 424 private static native void nativeReleaseSuspendBlocker(String name); 425 private static native void nativeSetInteractive(boolean enable); 426 private static native void nativeSetAutoSuspend(boolean enable); 427 private static native void nativeSendPowerHint(int hintId, int data); 428 429 public PowerManagerService(Context context) { 430 super(context); 431 mContext = context; 432 synchronized (mLock) { 433 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 434 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 435 mDisplaySuspendBlocker.acquire(); 436 mHoldingDisplaySuspendBlocker = true; 437 mHalAutoSuspendModeEnabled = false; 438 mHalInteractiveModeEnabled = true; 439 440 mScreenOnBlocker = new ScreenOnBlockerImpl(); 441 mWakefulness = WAKEFULNESS_AWAKE; 442 mInteractive = true; 443 444 nativeInit(); 445 nativeSetAutoSuspend(false); 446 nativeSetInteractive(true); 447 } 448 } 449 450 @Override 451 public void onStart() { 452 publishBinderService(Context.POWER_SERVICE, new BinderService()); 453 publishLocalService(PowerManagerInternal.class, new LocalService()); 454 } 455 456 /** 457 * Initialize the power manager. 458 * Must be called before any other functions within the power manager are called. 459 */ 460 public void init(LightsManager ls, 461 BatteryService bs, IBatteryStats bss, 462 IAppOpsService appOps) { 463 mLightsManager = ls; 464 mBatteryService = bs; 465 mBatteryStats = bss; 466 mAppOps = appOps; 467 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 468 mHandlerThread = new ServiceThread(TAG, 469 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 470 mHandlerThread.start(); 471 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 472 473 Watchdog.getInstance().addMonitor(this); 474 Watchdog.getInstance().addThread(mHandler); 475 } 476 477 void setPolicy(WindowManagerPolicy policy) { 478 synchronized (mLock) { 479 mPolicy = policy; 480 } 481 } 482 483 public void systemReady() { 484 synchronized (mLock) { 485 mSystemReady = true; 486 mDreamManager = LocalServices.getService(DreamManagerInternal.class); 487 488 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 489 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 490 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 491 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 492 493 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 494 495 // The notifier runs on the system server's main looper so as not to interfere 496 // with the animations and other critical functions of the power manager. 497 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 498 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 499 mScreenOnBlocker, mPolicy); 500 501 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 502 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 503 mHandler); 504 mSettingsObserver = new SettingsObserver(mHandler); 505 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 506 507 // Initialize display power management. 508 mDisplayManagerInternal.initPowerManagement( 509 mDisplayPowerCallbacks, mHandler, sensorManager); 510 511 // Register for broadcasts from other components of the system. 512 IntentFilter filter = new IntentFilter(); 513 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 514 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 515 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 516 517 filter = new IntentFilter(); 518 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 519 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 520 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 521 522 filter = new IntentFilter(); 523 filter.addAction(Intent.ACTION_DREAMING_STARTED); 524 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 525 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 526 527 filter = new IntentFilter(); 528 filter.addAction(Intent.ACTION_USER_SWITCHED); 529 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 530 531 filter = new IntentFilter(); 532 filter.addAction(Intent.ACTION_DOCK_EVENT); 533 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 534 535 // Register for settings changes. 536 final ContentResolver resolver = mContext.getContentResolver(); 537 resolver.registerContentObserver(Settings.Secure.getUriFor( 538 Settings.Secure.SCREENSAVER_ENABLED), 539 false, mSettingsObserver, UserHandle.USER_ALL); 540 resolver.registerContentObserver(Settings.Secure.getUriFor( 541 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 542 false, mSettingsObserver, UserHandle.USER_ALL); 543 resolver.registerContentObserver(Settings.Secure.getUriFor( 544 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 545 false, mSettingsObserver, UserHandle.USER_ALL); 546 resolver.registerContentObserver(Settings.System.getUriFor( 547 Settings.System.SCREEN_OFF_TIMEOUT), 548 false, mSettingsObserver, UserHandle.USER_ALL); 549 resolver.registerContentObserver(Settings.Global.getUriFor( 550 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 551 false, mSettingsObserver, UserHandle.USER_ALL); 552 resolver.registerContentObserver(Settings.System.getUriFor( 553 Settings.System.SCREEN_BRIGHTNESS), 554 false, mSettingsObserver, UserHandle.USER_ALL); 555 resolver.registerContentObserver(Settings.System.getUriFor( 556 Settings.System.SCREEN_BRIGHTNESS_MODE), 557 false, mSettingsObserver, UserHandle.USER_ALL); 558 resolver.registerContentObserver(Settings.System.getUriFor( 559 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ), 560 false, mSettingsObserver, UserHandle.USER_ALL); 561 resolver.registerContentObserver(Settings.Global.getUriFor( 562 Settings.Global.LOW_POWER_MODE), 563 false, mSettingsObserver, UserHandle.USER_ALL); 564 resolver.registerContentObserver(Settings.Global.getUriFor( 565 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL), 566 false, mSettingsObserver, UserHandle.USER_ALL); 567 // Go. 568 readConfigurationLocked(); 569 updateSettingsLocked(); 570 mDirty |= DIRTY_BATTERY_STATE; 571 updatePowerStateLocked(); 572 } 573 } 574 575 private void readConfigurationLocked() { 576 final Resources resources = mContext.getResources(); 577 578 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 579 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 580 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 581 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 582 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 583 com.android.internal.R.bool.config_unplugTurnsOnScreen); 584 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 585 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 586 mDreamsSupportedConfig = resources.getBoolean( 587 com.android.internal.R.bool.config_dreamsSupported); 588 mDreamsEnabledByDefaultConfig = resources.getBoolean( 589 com.android.internal.R.bool.config_dreamsEnabledByDefault); 590 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 591 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 592 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 593 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 594 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 595 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 596 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 597 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 598 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 599 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 600 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 601 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 602 mMinimumScreenOffTimeoutConfig = resources.getInteger( 603 com.android.internal.R.integer.config_minimumScreenOffTimeout); 604 mMaximumScreenDimDurationConfig = resources.getInteger( 605 com.android.internal.R.integer.config_maximumScreenDimDuration); 606 mMaximumScreenDimRatioConfig = resources.getFraction( 607 com.android.internal.R.fraction.config_maximumScreenDimRatio, 1, 1); 608 } 609 610 private void updateSettingsLocked() { 611 final ContentResolver resolver = mContext.getContentResolver(); 612 613 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 614 Settings.Secure.SCREENSAVER_ENABLED, 615 mDreamsEnabledByDefaultConfig ? 1 : 0, 616 UserHandle.USER_CURRENT) != 0); 617 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 618 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 619 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 620 UserHandle.USER_CURRENT) != 0); 621 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 622 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 623 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 624 UserHandle.USER_CURRENT) != 0); 625 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 626 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 627 UserHandle.USER_CURRENT); 628 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 629 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 630 631 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 632 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 633 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 634 UserHandle.USER_CURRENT); 635 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 636 mTemporaryScreenBrightnessSettingOverride = -1; 637 } 638 639 final float oldScreenAutoBrightnessAdjustmentSetting = 640 mScreenAutoBrightnessAdjustmentSetting; 641 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 642 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 643 UserHandle.USER_CURRENT); 644 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 645 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 646 } 647 648 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 649 Settings.System.SCREEN_BRIGHTNESS_MODE, 650 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 651 652 final boolean lowPowerModeEnabled = Settings.Global.getInt(resolver, 653 Settings.Global.LOW_POWER_MODE, 0) != 0; 654 final boolean autoLowPowerModeEnabled = Settings.Global.getInt(resolver, 655 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL, 15) != 0; 656 if (lowPowerModeEnabled != mLowPowerModeSetting 657 || autoLowPowerModeEnabled != mAutoLowPowerModeEnabled) { 658 mLowPowerModeSetting = lowPowerModeEnabled; 659 mAutoLowPowerModeEnabled = autoLowPowerModeEnabled; 660 updateLowPowerModeLocked(); 661 } 662 663 mDirty |= DIRTY_SETTINGS; 664 } 665 666 void updateLowPowerModeLocked() { 667 final boolean lowPowerModeEnabled = !mIsPowered 668 && (mLowPowerModeSetting || (mAutoLowPowerModeEnabled && mBatteryLevelLow)); 669 if (mLowPowerModeEnabled != lowPowerModeEnabled) { 670 mLowPowerModeEnabled = lowPowerModeEnabled; 671 powerHintInternal(POWER_HINT_LOW_POWER_MODE, lowPowerModeEnabled ? 1 : 0); 672 mLowPowerModeEnabled = lowPowerModeEnabled; 673 BackgroundThread.getHandler().post(new Runnable() { 674 @Override 675 public void run() { 676 ArrayList<PowerManagerInternal.LowPowerModeListener> listeners; 677 synchronized (mLock) { 678 listeners = new ArrayList<PowerManagerInternal.LowPowerModeListener>( 679 mLowPowerModeListeners); 680 } 681 for (int i=0; i<listeners.size(); i++) { 682 listeners.get(i).onLowPowerModeChanged(lowPowerModeEnabled); 683 } 684 Intent intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED); 685 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 686 mContext.sendBroadcast(intent); 687 } 688 }); 689 } 690 } 691 692 private void handleSettingsChangedLocked() { 693 updateSettingsLocked(); 694 updatePowerStateLocked(); 695 } 696 697 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 698 WorkSource ws, String historyTag, int uid, int pid) { 699 synchronized (mLock) { 700 if (DEBUG_SPEW) { 701 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 702 + ", flags=0x" + Integer.toHexString(flags) 703 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 704 } 705 706 WakeLock wakeLock; 707 int index = findWakeLockIndexLocked(lock); 708 if (index >= 0) { 709 wakeLock = mWakeLocks.get(index); 710 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 711 // Update existing wake lock. This shouldn't happen but is harmless. 712 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 713 uid, pid, ws, historyTag); 714 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 715 } 716 } else { 717 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 718 try { 719 lock.linkToDeath(wakeLock, 0); 720 } catch (RemoteException ex) { 721 throw new IllegalArgumentException("Wake lock is already dead."); 722 } 723 notifyWakeLockAcquiredLocked(wakeLock); 724 mWakeLocks.add(wakeLock); 725 } 726 727 applyWakeLockFlagsOnAcquireLocked(wakeLock); 728 mDirty |= DIRTY_WAKE_LOCKS; 729 updatePowerStateLocked(); 730 } 731 } 732 733 @SuppressWarnings("deprecation") 734 private static boolean isScreenLock(final WakeLock wakeLock) { 735 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 736 case PowerManager.FULL_WAKE_LOCK: 737 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 738 case PowerManager.SCREEN_DIM_WAKE_LOCK: 739 return true; 740 } 741 return false; 742 } 743 744 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 745 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 746 && isScreenLock(wakeLock)) { 747 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 748 } 749 } 750 751 private void releaseWakeLockInternal(IBinder lock, int flags) { 752 synchronized (mLock) { 753 int index = findWakeLockIndexLocked(lock); 754 if (index < 0) { 755 if (DEBUG_SPEW) { 756 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 757 + " [not found], flags=0x" + Integer.toHexString(flags)); 758 } 759 return; 760 } 761 762 WakeLock wakeLock = mWakeLocks.get(index); 763 if (DEBUG_SPEW) { 764 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 765 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 766 } 767 768 mWakeLocks.remove(index); 769 notifyWakeLockReleasedLocked(wakeLock); 770 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 771 772 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 773 mRequestWaitForNegativeProximity = true; 774 } 775 776 applyWakeLockFlagsOnReleaseLocked(wakeLock); 777 mDirty |= DIRTY_WAKE_LOCKS; 778 updatePowerStateLocked(); 779 } 780 } 781 782 private void handleWakeLockDeath(WakeLock wakeLock) { 783 synchronized (mLock) { 784 if (DEBUG_SPEW) { 785 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 786 + " [" + wakeLock.mTag + "]"); 787 } 788 789 int index = mWakeLocks.indexOf(wakeLock); 790 if (index < 0) { 791 return; 792 } 793 794 mWakeLocks.remove(index); 795 notifyWakeLockReleasedLocked(wakeLock); 796 797 applyWakeLockFlagsOnReleaseLocked(wakeLock); 798 mDirty |= DIRTY_WAKE_LOCKS; 799 updatePowerStateLocked(); 800 } 801 } 802 803 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 804 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 805 && isScreenLock(wakeLock)) { 806 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 807 PowerManager.USER_ACTIVITY_EVENT_OTHER, 808 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 809 wakeLock.mOwnerUid); 810 } 811 } 812 813 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag) { 814 synchronized (mLock) { 815 int index = findWakeLockIndexLocked(lock); 816 if (index < 0) { 817 if (DEBUG_SPEW) { 818 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 819 + " [not found], ws=" + ws); 820 } 821 throw new IllegalArgumentException("Wake lock not active"); 822 } 823 824 WakeLock wakeLock = mWakeLocks.get(index); 825 if (DEBUG_SPEW) { 826 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 827 + " [" + wakeLock.mTag + "], ws=" + ws); 828 } 829 830 if (!wakeLock.hasSameWorkSource(ws)) { 831 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 832 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 833 ws, historyTag); 834 wakeLock.mHistoryTag = historyTag; 835 wakeLock.updateWorkSource(ws); 836 } 837 } 838 } 839 840 private int findWakeLockIndexLocked(IBinder lock) { 841 final int count = mWakeLocks.size(); 842 for (int i = 0; i < count; i++) { 843 if (mWakeLocks.get(i).mLock == lock) { 844 return i; 845 } 846 } 847 return -1; 848 } 849 850 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 851 if (mSystemReady) { 852 wakeLock.mNotifiedAcquired = true; 853 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 854 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 855 wakeLock.mHistoryTag); 856 } 857 } 858 859 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 860 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 861 if (mSystemReady && wakeLock.mNotifiedAcquired) { 862 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 863 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 864 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 865 } 866 } 867 868 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 869 if (mSystemReady && wakeLock.mNotifiedAcquired) { 870 wakeLock.mNotifiedAcquired = false; 871 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, 872 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 873 wakeLock.mWorkSource, wakeLock.mHistoryTag); 874 } 875 } 876 877 @SuppressWarnings("deprecation") 878 private boolean isWakeLockLevelSupportedInternal(int level) { 879 synchronized (mLock) { 880 switch (level) { 881 case PowerManager.PARTIAL_WAKE_LOCK: 882 case PowerManager.SCREEN_DIM_WAKE_LOCK: 883 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 884 case PowerManager.FULL_WAKE_LOCK: 885 case PowerManager.DOZE_WAKE_LOCK: 886 return true; 887 888 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 889 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 890 891 default: 892 return false; 893 } 894 } 895 } 896 897 // Called from native code. 898 private void userActivityFromNative(long eventTime, int event, int flags) { 899 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 900 } 901 902 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 903 synchronized (mLock) { 904 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 905 updatePowerStateLocked(); 906 } 907 } 908 } 909 910 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 911 if (DEBUG_SPEW) { 912 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 913 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 914 + ", uid=" + uid); 915 } 916 917 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 918 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 919 || !mBootCompleted || !mSystemReady) { 920 return false; 921 } 922 923 mNotifier.onUserActivity(event, uid); 924 925 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 926 if (eventTime > mLastUserActivityTimeNoChangeLights 927 && eventTime > mLastUserActivityTime) { 928 mLastUserActivityTimeNoChangeLights = eventTime; 929 mDirty |= DIRTY_USER_ACTIVITY; 930 return true; 931 } 932 } else { 933 if (eventTime > mLastUserActivityTime) { 934 mLastUserActivityTime = eventTime; 935 mDirty |= DIRTY_USER_ACTIVITY; 936 return true; 937 } 938 } 939 return false; 940 } 941 942 private void wakeUpInternal(long eventTime) { 943 synchronized (mLock) { 944 if (wakeUpNoUpdateLocked(eventTime)) { 945 updatePowerStateLocked(); 946 } 947 } 948 } 949 950 private boolean wakeUpNoUpdateLocked(long eventTime) { 951 if (DEBUG_SPEW) { 952 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 953 } 954 955 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 956 || !mBootCompleted || !mSystemReady) { 957 return false; 958 } 959 960 switch (mWakefulness) { 961 case WAKEFULNESS_ASLEEP: 962 Slog.i(TAG, "Waking up from sleep..."); 963 break; 964 case WAKEFULNESS_DREAMING: 965 Slog.i(TAG, "Waking up from dream..."); 966 break; 967 case WAKEFULNESS_DOZING: 968 Slog.i(TAG, "Waking up from dozing..."); 969 break; 970 } 971 972 mLastWakeTime = eventTime; 973 mDirty |= DIRTY_WAKEFULNESS; 974 mWakefulness = WAKEFULNESS_AWAKE; 975 setInteractiveStateLocked(true, 0); 976 977 userActivityNoUpdateLocked( 978 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 979 return true; 980 } 981 982 private void goToSleepInternal(long eventTime, int reason, int flags) { 983 synchronized (mLock) { 984 if (goToSleepNoUpdateLocked(eventTime, reason, flags)) { 985 updatePowerStateLocked(); 986 } 987 } 988 } 989 990 // This method is called goToSleep for historical reasons but we actually start 991 // dozing before really going to sleep. 992 @SuppressWarnings("deprecation") 993 private boolean goToSleepNoUpdateLocked(long eventTime, int reason, int flags) { 994 if (DEBUG_SPEW) { 995 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime 996 + ", reason=" + reason + ", flags=" + flags); 997 } 998 999 if (eventTime < mLastWakeTime 1000 || mWakefulness == WAKEFULNESS_ASLEEP 1001 || mWakefulness == WAKEFULNESS_DOZING 1002 || !mBootCompleted || !mSystemReady) { 1003 return false; 1004 } 1005 1006 switch (reason) { 1007 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 1008 Slog.i(TAG, "Going to sleep due to device administration policy..."); 1009 break; 1010 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 1011 Slog.i(TAG, "Going to sleep due to screen timeout..."); 1012 break; 1013 default: 1014 Slog.i(TAG, "Going to sleep by user request..."); 1015 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 1016 break; 1017 } 1018 1019 mLastSleepTime = eventTime; 1020 mDirty |= DIRTY_WAKEFULNESS; 1021 mWakefulness = WAKEFULNESS_DOZING; 1022 mSandmanSummoned = true; 1023 setInteractiveStateLocked(false, reason); 1024 1025 // Report the number of wake locks that will be cleared by going to sleep. 1026 int numWakeLocksCleared = 0; 1027 final int numWakeLocks = mWakeLocks.size(); 1028 for (int i = 0; i < numWakeLocks; i++) { 1029 final WakeLock wakeLock = mWakeLocks.get(i); 1030 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1031 case PowerManager.FULL_WAKE_LOCK: 1032 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1033 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1034 numWakeLocksCleared += 1; 1035 break; 1036 } 1037 } 1038 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 1039 1040 // Skip dozing if requested. 1041 if ((flags & PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE) != 0) { 1042 reallyGoToSleepNoUpdateLocked(eventTime); 1043 } 1044 return true; 1045 } 1046 1047 private void napInternal(long eventTime) { 1048 synchronized (mLock) { 1049 if (napNoUpdateLocked(eventTime)) { 1050 updatePowerStateLocked(); 1051 } 1052 } 1053 } 1054 1055 private boolean napNoUpdateLocked(long eventTime) { 1056 if (DEBUG_SPEW) { 1057 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 1058 } 1059 1060 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1061 || !mBootCompleted || !mSystemReady) { 1062 return false; 1063 } 1064 1065 Slog.i(TAG, "Nap time..."); 1066 1067 mDirty |= DIRTY_WAKEFULNESS; 1068 mWakefulness = WAKEFULNESS_DREAMING; 1069 mSandmanSummoned = true; 1070 setInteractiveStateLocked(true, 0); 1071 return true; 1072 } 1073 1074 // Done dozing, drop everything and go to sleep. 1075 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 1076 if (DEBUG_SPEW) { 1077 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 1078 } 1079 1080 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1081 || !mBootCompleted || !mSystemReady) { 1082 return false; 1083 } 1084 1085 Slog.i(TAG, "Sleeping..."); 1086 1087 mDirty |= DIRTY_WAKEFULNESS; 1088 mWakefulness = WAKEFULNESS_ASLEEP; 1089 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1090 return true; 1091 } 1092 1093 private void setInteractiveStateLocked(boolean interactive, int reason) { 1094 if (mInteractive != interactive) { 1095 finishInteractiveStateChangeLocked(); 1096 1097 mInteractive = interactive; 1098 mInteractiveChanging = true; 1099 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1100 } 1101 } 1102 1103 private void finishInteractiveStateChangeLocked() { 1104 if (mInteractiveChanging) { 1105 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1106 mInteractiveChanging = false; 1107 } 1108 } 1109 1110 /** 1111 * Updates the global power state based on dirty bits recorded in mDirty. 1112 * 1113 * This is the main function that performs power state transitions. 1114 * We centralize them here so that we can recompute the power state completely 1115 * each time something important changes, and ensure that we do it the same 1116 * way each time. The point is to gather all of the transition logic here. 1117 */ 1118 private void updatePowerStateLocked() { 1119 if (!mSystemReady || mDirty == 0) { 1120 return; 1121 } 1122 if (!Thread.holdsLock(mLock)) { 1123 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1124 } 1125 1126 // Phase 0: Basic state updates. 1127 updateIsPoweredLocked(mDirty); 1128 updateStayOnLocked(mDirty); 1129 1130 // Phase 1: Update wakefulness. 1131 // Loop because the wake lock and user activity computations are influenced 1132 // by changes in wakefulness. 1133 final long now = SystemClock.uptimeMillis(); 1134 int dirtyPhase2 = 0; 1135 for (;;) { 1136 int dirtyPhase1 = mDirty; 1137 dirtyPhase2 |= dirtyPhase1; 1138 mDirty = 0; 1139 1140 updateWakeLockSummaryLocked(dirtyPhase1); 1141 updateUserActivitySummaryLocked(now, dirtyPhase1); 1142 if (!updateWakefulnessLocked(dirtyPhase1)) { 1143 break; 1144 } 1145 } 1146 1147 // Phase 2: Update dreams and display power state. 1148 updateDreamLocked(dirtyPhase2); 1149 updateDisplayPowerStateLocked(dirtyPhase2); 1150 1151 // Phase 3: Send notifications, if needed. 1152 if (mDisplayReady) { 1153 finishInteractiveStateChangeLocked(); 1154 } 1155 1156 // Phase 4: Update suspend blocker. 1157 // Because we might release the last suspend blocker here, we need to make sure 1158 // we finished everything else first! 1159 updateSuspendBlockerLocked(); 1160 } 1161 1162 /** 1163 * Updates the value of mIsPowered. 1164 * Sets DIRTY_IS_POWERED if a change occurred. 1165 */ 1166 private void updateIsPoweredLocked(int dirty) { 1167 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1168 final boolean wasPowered = mIsPowered; 1169 final int oldPlugType = mPlugType; 1170 final boolean oldLevelLow = mBatteryLevelLow; 1171 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1172 mPlugType = mBatteryService.getPlugType(); 1173 mBatteryLevel = mBatteryService.getBatteryLevel(); 1174 mBatteryLevelLow = mBatteryService.getBatteryLevelLow(); 1175 1176 if (DEBUG_SPEW) { 1177 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1178 + ", mIsPowered=" + mIsPowered 1179 + ", oldPlugType=" + oldPlugType 1180 + ", mPlugType=" + mPlugType 1181 + ", mBatteryLevel=" + mBatteryLevel); 1182 } 1183 1184 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1185 mDirty |= DIRTY_IS_POWERED; 1186 1187 // Update wireless dock detection state. 1188 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1189 mIsPowered, mPlugType, mBatteryLevel); 1190 1191 // Treat plugging and unplugging the devices as a user activity. 1192 // Users find it disconcerting when they plug or unplug the device 1193 // and it shuts off right away. 1194 // Some devices also wake the device when plugged or unplugged because 1195 // they don't have a charging LED. 1196 final long now = SystemClock.uptimeMillis(); 1197 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1198 dockedOnWirelessCharger)) { 1199 wakeUpNoUpdateLocked(now); 1200 } 1201 userActivityNoUpdateLocked( 1202 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1203 1204 // Tell the notifier whether wireless charging has started so that 1205 // it can provide feedback to the user. 1206 if (dockedOnWirelessCharger) { 1207 mNotifier.onWirelessChargingStarted(); 1208 } 1209 } 1210 1211 if (wasPowered != mIsPowered || oldLevelLow != mBatteryLevelLow) { 1212 updateLowPowerModeLocked(); 1213 } 1214 } 1215 } 1216 1217 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1218 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1219 // Don't wake when powered unless configured to do so. 1220 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1221 return false; 1222 } 1223 1224 // Don't wake when undocked from wireless charger. 1225 // See WirelessChargerDetector for justification. 1226 if (wasPowered && !mIsPowered 1227 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1228 return false; 1229 } 1230 1231 // Don't wake when docked on wireless charger unless we are certain of it. 1232 // See WirelessChargerDetector for justification. 1233 if (!wasPowered && mIsPowered 1234 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1235 && !dockedOnWirelessCharger) { 1236 return false; 1237 } 1238 1239 // If already dreaming and becoming powered, then don't wake. 1240 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1241 return false; 1242 } 1243 1244 // Otherwise wake up! 1245 return true; 1246 } 1247 1248 /** 1249 * Updates the value of mStayOn. 1250 * Sets DIRTY_STAY_ON if a change occurred. 1251 */ 1252 private void updateStayOnLocked(int dirty) { 1253 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1254 final boolean wasStayOn = mStayOn; 1255 if (mStayOnWhilePluggedInSetting != 0 1256 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1257 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1258 } else { 1259 mStayOn = false; 1260 } 1261 1262 if (mStayOn != wasStayOn) { 1263 mDirty |= DIRTY_STAY_ON; 1264 } 1265 } 1266 } 1267 1268 /** 1269 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1270 * Note that most wake-locks are ignored when the system is asleep. 1271 * 1272 * This function must have no other side-effects. 1273 */ 1274 @SuppressWarnings("deprecation") 1275 private void updateWakeLockSummaryLocked(int dirty) { 1276 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1277 mWakeLockSummary = 0; 1278 1279 final int numWakeLocks = mWakeLocks.size(); 1280 for (int i = 0; i < numWakeLocks; i++) { 1281 final WakeLock wakeLock = mWakeLocks.get(i); 1282 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1283 case PowerManager.PARTIAL_WAKE_LOCK: 1284 mWakeLockSummary |= WAKE_LOCK_CPU; 1285 break; 1286 case PowerManager.FULL_WAKE_LOCK: 1287 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1288 break; 1289 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1290 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1291 break; 1292 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1293 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1294 break; 1295 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1296 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1297 break; 1298 case PowerManager.DOZE_WAKE_LOCK: 1299 mWakeLockSummary |= WAKE_LOCK_DOZE; 1300 break; 1301 } 1302 } 1303 1304 // Cancel wake locks that make no sense based on the current state. 1305 if (mWakefulness != WAKEFULNESS_DOZING) { 1306 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1307 } 1308 if (mWakefulness == WAKEFULNESS_ASLEEP 1309 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1310 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1311 | WAKE_LOCK_BUTTON_BRIGHT); 1312 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1313 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1314 } 1315 } 1316 1317 // Infer implied wake locks where necessary based on the current state. 1318 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1319 if (mWakefulness == WAKEFULNESS_AWAKE) { 1320 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1321 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1322 mWakeLockSummary |= WAKE_LOCK_CPU; 1323 } 1324 } 1325 1326 if (DEBUG_SPEW) { 1327 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1328 + wakefulnessToString(mWakefulness) 1329 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1330 } 1331 } 1332 } 1333 1334 /** 1335 * Updates the value of mUserActivitySummary to summarize the user requested 1336 * state of the system such as whether the screen should be bright or dim. 1337 * Note that user activity is ignored when the system is asleep. 1338 * 1339 * This function must have no other side-effects. 1340 */ 1341 private void updateUserActivitySummaryLocked(long now, int dirty) { 1342 // Update the status of the user activity timeout timer. 1343 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1344 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1345 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1346 1347 long nextTimeout = 0; 1348 if (mWakefulness == WAKEFULNESS_AWAKE 1349 || mWakefulness == WAKEFULNESS_DREAMING 1350 || mWakefulness == WAKEFULNESS_DOZING) { 1351 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1352 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1353 1354 mUserActivitySummary = 0; 1355 if (mLastUserActivityTime >= mLastWakeTime) { 1356 nextTimeout = mLastUserActivityTime 1357 + screenOffTimeout - screenDimDuration; 1358 if (now < nextTimeout) { 1359 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1360 } else { 1361 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1362 if (now < nextTimeout) { 1363 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1364 } 1365 } 1366 } 1367 if (mUserActivitySummary == 0 1368 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1369 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1370 if (now < nextTimeout 1371 && mDisplayPowerRequest.wantScreenOnNormal()) { 1372 mUserActivitySummary = mDisplayPowerRequest.screenState 1373 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1374 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1375 } 1376 } 1377 if (mUserActivitySummary != 0) { 1378 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1379 msg.setAsynchronous(true); 1380 mHandler.sendMessageAtTime(msg, nextTimeout); 1381 } 1382 } else { 1383 mUserActivitySummary = 0; 1384 } 1385 1386 if (DEBUG_SPEW) { 1387 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1388 + wakefulnessToString(mWakefulness) 1389 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1390 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1391 } 1392 } 1393 } 1394 1395 /** 1396 * Called when a user activity timeout has occurred. 1397 * Simply indicates that something about user activity has changed so that the new 1398 * state can be recomputed when the power state is updated. 1399 * 1400 * This function must have no other side-effects besides setting the dirty 1401 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1402 */ 1403 private void handleUserActivityTimeout() { // runs on handler thread 1404 synchronized (mLock) { 1405 if (DEBUG_SPEW) { 1406 Slog.d(TAG, "handleUserActivityTimeout"); 1407 } 1408 1409 mDirty |= DIRTY_USER_ACTIVITY; 1410 updatePowerStateLocked(); 1411 } 1412 } 1413 1414 private int getScreenOffTimeoutLocked() { 1415 int timeout = mScreenOffTimeoutSetting; 1416 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1417 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1418 } 1419 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1420 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1421 } 1422 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1423 } 1424 1425 private int getScreenDimDurationLocked(int screenOffTimeout) { 1426 return Math.min(mMaximumScreenDimDurationConfig, 1427 (int)(screenOffTimeout * mMaximumScreenDimRatioConfig)); 1428 } 1429 1430 /** 1431 * Updates the wakefulness of the device. 1432 * 1433 * This is the function that decides whether the device should start dreaming 1434 * based on the current wake locks and user activity state. It may modify mDirty 1435 * if the wakefulness changes. 1436 * 1437 * Returns true if the wakefulness changed and we need to restart power state calculation. 1438 */ 1439 private boolean updateWakefulnessLocked(int dirty) { 1440 boolean changed = false; 1441 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1442 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1443 | DIRTY_DOCK_STATE)) != 0) { 1444 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1445 if (DEBUG_SPEW) { 1446 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1447 } 1448 final long time = SystemClock.uptimeMillis(); 1449 if (shouldNapAtBedTimeLocked()) { 1450 changed = napNoUpdateLocked(time); 1451 } else { 1452 changed = goToSleepNoUpdateLocked(time, 1453 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0); 1454 } 1455 } 1456 } 1457 return changed; 1458 } 1459 1460 /** 1461 * Returns true if the device should automatically nap and start dreaming when the user 1462 * activity timeout has expired and it's bedtime. 1463 */ 1464 private boolean shouldNapAtBedTimeLocked() { 1465 return mDreamsActivateOnSleepSetting 1466 || (mDreamsActivateOnDockSetting 1467 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1468 } 1469 1470 /** 1471 * Returns true if the device should go to sleep now. 1472 * Also used when exiting a dream to determine whether we should go back 1473 * to being fully awake or else go to sleep for good. 1474 */ 1475 private boolean isItBedTimeYetLocked() { 1476 return mBootCompleted && !isBeingKeptAwakeLocked(); 1477 } 1478 1479 /** 1480 * Returns true if the device is being kept awake by a wake lock, user activity 1481 * or the stay on while powered setting. We also keep the phone awake when 1482 * the proximity sensor returns a positive result so that the device does not 1483 * lock while in a phone call. This function only controls whether the device 1484 * will go to sleep or dream which is independent of whether it will be allowed 1485 * to suspend. 1486 */ 1487 private boolean isBeingKeptAwakeLocked() { 1488 return mStayOn 1489 || mProximityPositive 1490 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1491 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1492 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1493 } 1494 1495 /** 1496 * Determines whether to post a message to the sandman to update the dream state. 1497 */ 1498 private void updateDreamLocked(int dirty) { 1499 if ((dirty & (DIRTY_WAKEFULNESS 1500 | DIRTY_USER_ACTIVITY 1501 | DIRTY_WAKE_LOCKS 1502 | DIRTY_BOOT_COMPLETED 1503 | DIRTY_SETTINGS 1504 | DIRTY_IS_POWERED 1505 | DIRTY_STAY_ON 1506 | DIRTY_PROXIMITY_POSITIVE 1507 | DIRTY_BATTERY_STATE)) != 0) { 1508 scheduleSandmanLocked(); 1509 } 1510 } 1511 1512 private void scheduleSandmanLocked() { 1513 if (!mSandmanScheduled) { 1514 mSandmanScheduled = true; 1515 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1516 msg.setAsynchronous(true); 1517 mHandler.sendMessage(msg); 1518 } 1519 } 1520 1521 /** 1522 * Called when the device enters or exits a dreaming or dozing state. 1523 * 1524 * We do this asynchronously because we must call out of the power manager to start 1525 * the dream and we don't want to hold our lock while doing so. There is a risk that 1526 * the device will wake or go to sleep in the meantime so we have to handle that case. 1527 */ 1528 private void handleSandman() { // runs on handler thread 1529 // Handle preconditions. 1530 final boolean startDreaming; 1531 final int wakefulness; 1532 synchronized (mLock) { 1533 mSandmanScheduled = false; 1534 wakefulness = mWakefulness; 1535 if (mSandmanSummoned) { 1536 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1537 || wakefulness == WAKEFULNESS_DOZING); 1538 mSandmanSummoned = false; 1539 } else { 1540 startDreaming = false; 1541 } 1542 } 1543 1544 // Start dreaming if needed. 1545 // We only control the dream on the handler thread, so we don't need to worry about 1546 // concurrent attempts to start or stop the dream. 1547 final boolean isDreaming; 1548 if (mDreamManager != null) { 1549 // Restart the dream whenever the sandman is summoned. 1550 if (startDreaming) { 1551 mDreamManager.stopDream(); 1552 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1553 } 1554 isDreaming = mDreamManager.isDreaming(); 1555 } else { 1556 isDreaming = false; 1557 } 1558 1559 // Update dream state. 1560 synchronized (mLock) { 1561 // Remember the initial battery level when the dream started. 1562 if (startDreaming && isDreaming) { 1563 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1564 if (wakefulness == WAKEFULNESS_DOZING) { 1565 Slog.i(TAG, "Dozing..."); 1566 } else { 1567 Slog.i(TAG, "Dreaming..."); 1568 } 1569 } 1570 1571 // If preconditions changed, wait for the next iteration to determine 1572 // whether the dream should continue (or be restarted). 1573 if (mSandmanSummoned || mWakefulness != wakefulness) { 1574 return; // wait for next cycle 1575 } 1576 1577 // Determine whether the dream should continue. 1578 if (wakefulness == WAKEFULNESS_DREAMING) { 1579 if (isDreaming && canDreamLocked()) { 1580 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1581 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1582 - mDreamsBatteryLevelDrainCutoffConfig 1583 && !isBeingKeptAwakeLocked()) { 1584 // If the user activity timeout expired and the battery appears 1585 // to be draining faster than it is charging then stop dreaming 1586 // and go to sleep. 1587 Slog.i(TAG, "Stopping dream because the battery appears to " 1588 + "be draining faster than it is charging. " 1589 + "Battery level when dream started: " 1590 + mBatteryLevelWhenDreamStarted + "%. " 1591 + "Battery level now: " + mBatteryLevel + "%."); 1592 } else { 1593 return; // continue dreaming 1594 } 1595 } 1596 1597 // Dream has ended or will be stopped. Update the power state. 1598 if (isItBedTimeYetLocked()) { 1599 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1600 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0); 1601 updatePowerStateLocked(); 1602 } else { 1603 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1604 updatePowerStateLocked(); 1605 } 1606 } else if (wakefulness == WAKEFULNESS_DOZING) { 1607 if (isDreaming) { 1608 return; // continue dozing 1609 } 1610 1611 // Doze has ended or will be stopped. Update the power state. 1612 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1613 updatePowerStateLocked(); 1614 } 1615 } 1616 1617 // Stop dream. 1618 if (isDreaming) { 1619 mDreamManager.stopDream(); 1620 } 1621 } 1622 1623 /** 1624 * Returns true if the device is allowed to dream in its current state. 1625 * This function is not called when dozing. 1626 */ 1627 private boolean canDreamLocked() { 1628 if (mWakefulness != WAKEFULNESS_DREAMING 1629 || !mDreamsSupportedConfig 1630 || !mDreamsEnabledSetting 1631 || !mDisplayPowerRequest.wantScreenOnNormal() 1632 || !mBootCompleted) { 1633 return false; 1634 } 1635 if (!isBeingKeptAwakeLocked()) { 1636 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1637 return false; 1638 } 1639 if (!mIsPowered 1640 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1641 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1642 return false; 1643 } 1644 if (mIsPowered 1645 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1646 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1647 return false; 1648 } 1649 } 1650 return true; 1651 } 1652 1653 private void handleScreenOnBlockerReleased() { 1654 synchronized (mLock) { 1655 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1656 updatePowerStateLocked(); 1657 } 1658 } 1659 1660 /** 1661 * Updates the display power state asynchronously. 1662 * When the update is finished, mDisplayReady will be set to true. The display 1663 * controller posts a message to tell us when the actual display power state 1664 * has been updated so we come back here to double-check and finish up. 1665 * 1666 * This function recalculates the display power state each time. 1667 */ 1668 private void updateDisplayPowerStateLocked(int dirty) { 1669 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1670 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1671 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1672 final int newScreenState = getDesiredScreenPowerStateLocked(); 1673 mDisplayPowerRequest.screenState = newScreenState; 1674 1675 int screenBrightness = mScreenBrightnessSettingDefault; 1676 float screenAutoBrightnessAdjustment = 0.0f; 1677 boolean autoBrightness = (mScreenBrightnessModeSetting == 1678 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1679 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1680 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1681 autoBrightness = false; 1682 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1683 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1684 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1685 screenBrightness = mScreenBrightnessSetting; 1686 } 1687 if (autoBrightness) { 1688 screenBrightness = mScreenBrightnessSettingDefault; 1689 if (isValidAutoBrightnessAdjustment( 1690 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1691 screenAutoBrightnessAdjustment = 1692 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1693 } else if (isValidAutoBrightnessAdjustment( 1694 mScreenAutoBrightnessAdjustmentSetting)) { 1695 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1696 } 1697 } 1698 screenBrightness = Math.max(Math.min(screenBrightness, 1699 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1700 screenAutoBrightnessAdjustment = Math.max(Math.min( 1701 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1702 mDisplayPowerRequest.screenBrightness = screenBrightness; 1703 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1704 screenAutoBrightnessAdjustment; 1705 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1706 1707 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1708 1709 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1710 1711 mDisplayPowerRequest.lowPowerMode = mLowPowerModeEnabled; 1712 1713 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1714 mRequestWaitForNegativeProximity); 1715 mRequestWaitForNegativeProximity = false; 1716 1717 if (DEBUG_SPEW) { 1718 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1719 + ", newScreenState=" + newScreenState 1720 + ", mWakefulness=" + mWakefulness 1721 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1722 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1723 + ", mBootCompleted=" + mBootCompleted); 1724 } 1725 } 1726 } 1727 1728 private static boolean isValidBrightness(int value) { 1729 return value >= 0 && value <= 255; 1730 } 1731 1732 private static boolean isValidAutoBrightnessAdjustment(float value) { 1733 // Handles NaN by always returning false. 1734 return value >= -1.0f && value <= 1.0f; 1735 } 1736 1737 private int getDesiredScreenPowerStateLocked() { 1738 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1739 return DisplayPowerRequest.SCREEN_STATE_OFF; 1740 } 1741 1742 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1743 return DisplayPowerRequest.SCREEN_STATE_DOZE; 1744 } 1745 1746 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1747 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1748 || !mBootCompleted) { 1749 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1750 } 1751 1752 return DisplayPowerRequest.SCREEN_STATE_DIM; 1753 } 1754 1755 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1756 new DisplayManagerInternal.DisplayPowerCallbacks() { 1757 private int mDisplayState = Display.STATE_UNKNOWN; 1758 1759 @Override 1760 public void onStateChanged() { 1761 synchronized (mLock) { 1762 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1763 updatePowerStateLocked(); 1764 } 1765 } 1766 1767 @Override 1768 public void onProximityPositive() { 1769 synchronized (mLock) { 1770 mProximityPositive = true; 1771 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1772 updatePowerStateLocked(); 1773 } 1774 } 1775 1776 @Override 1777 public void onProximityNegative() { 1778 synchronized (mLock) { 1779 mProximityPositive = false; 1780 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1781 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1782 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1783 updatePowerStateLocked(); 1784 } 1785 } 1786 1787 @Override 1788 public void onDisplayStateChange(int state) { 1789 // This method is only needed to support legacy display blanking behavior 1790 // where the display's power state is coupled to suspend or to the power HAL. 1791 // The order of operations matters here. 1792 synchronized (mLock) { 1793 if (mDisplayState != state) { 1794 mDisplayState = state; 1795 if (state == Display.STATE_OFF) { 1796 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1797 setHalInteractiveModeLocked(false); 1798 } 1799 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1800 setHalAutoSuspendModeLocked(true); 1801 } 1802 } else { 1803 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1804 setHalAutoSuspendModeLocked(false); 1805 } 1806 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1807 setHalInteractiveModeLocked(true); 1808 } 1809 } 1810 } 1811 } 1812 } 1813 1814 @Override 1815 public void acquireSuspendBlocker() { 1816 mDisplaySuspendBlocker.acquire(); 1817 } 1818 1819 @Override 1820 public void releaseSuspendBlocker() { 1821 mDisplaySuspendBlocker.release(); 1822 } 1823 1824 @Override 1825 public String toString() { 1826 synchronized (this) { 1827 return "state=" + Display.stateToString(mDisplayState); 1828 } 1829 } 1830 }; 1831 1832 private boolean shouldUseProximitySensorLocked() { 1833 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1834 } 1835 1836 /** 1837 * Updates the suspend blocker that keeps the CPU alive. 1838 * 1839 * This function must have no other side-effects. 1840 */ 1841 private void updateSuspendBlockerLocked() { 1842 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1843 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1844 final boolean autoSuspend = !needDisplaySuspendBlocker; 1845 1846 // Disable auto-suspend if needed. 1847 if (!autoSuspend) { 1848 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1849 setHalAutoSuspendModeLocked(false); 1850 } 1851 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1852 setHalInteractiveModeLocked(true); 1853 } 1854 } 1855 1856 // First acquire suspend blockers if needed. 1857 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1858 mWakeLockSuspendBlocker.acquire(); 1859 mHoldingWakeLockSuspendBlocker = true; 1860 } 1861 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1862 mDisplaySuspendBlocker.acquire(); 1863 mHoldingDisplaySuspendBlocker = true; 1864 } 1865 1866 // Then release suspend blockers if needed. 1867 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1868 mWakeLockSuspendBlocker.release(); 1869 mHoldingWakeLockSuspendBlocker = false; 1870 } 1871 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1872 mDisplaySuspendBlocker.release(); 1873 mHoldingDisplaySuspendBlocker = false; 1874 } 1875 1876 // Enable auto-suspend if needed. 1877 if (autoSuspend) { 1878 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1879 setHalInteractiveModeLocked(false); 1880 } 1881 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1882 setHalAutoSuspendModeLocked(true); 1883 } 1884 } 1885 } 1886 1887 /** 1888 * Return true if we must keep a suspend blocker active on behalf of the display. 1889 * We do so if the screen is on or is in transition between states. 1890 */ 1891 private boolean needDisplaySuspendBlockerLocked() { 1892 if (!mDisplayReady) { 1893 return true; 1894 } 1895 if (mDisplayPowerRequest.wantScreenOnNormal()) { 1896 // If we asked for the screen to be on but it is off due to the proximity 1897 // sensor then we may suspend but only if the configuration allows it. 1898 // On some hardware it may not be safe to suspend because the proximity 1899 // sensor may not be correctly configured as a wake-up source. 1900 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1901 || !mSuspendWhenScreenOffDueToProximityConfig) { 1902 return true; 1903 } 1904 } 1905 // Let the system suspend if the screen is off or dozing. 1906 return false; 1907 } 1908 1909 private void setHalAutoSuspendModeLocked(boolean enable) { 1910 if (enable != mHalAutoSuspendModeEnabled) { 1911 if (DEBUG) { 1912 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 1913 } 1914 mHalAutoSuspendModeEnabled = enable; 1915 nativeSetAutoSuspend(enable); 1916 } 1917 } 1918 1919 private void setHalInteractiveModeLocked(boolean enable) { 1920 if (enable != mHalInteractiveModeEnabled) { 1921 if (DEBUG) { 1922 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 1923 } 1924 mHalInteractiveModeEnabled = enable; 1925 nativeSetInteractive(enable); 1926 } 1927 } 1928 1929 private boolean isInteractiveInternal() { 1930 synchronized (mLock) { 1931 return mInteractive; 1932 } 1933 } 1934 1935 private boolean isLowPowerModeInternal() { 1936 synchronized (mLock) { 1937 return mLowPowerModeEnabled; 1938 } 1939 } 1940 1941 private void handleBatteryStateChangedLocked() { 1942 mDirty |= DIRTY_BATTERY_STATE; 1943 updatePowerStateLocked(); 1944 } 1945 1946 private void startWatchingForBootAnimationFinished() { 1947 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1948 } 1949 1950 private void checkIfBootAnimationFinished() { 1951 if (DEBUG) { 1952 Slog.d(TAG, "Check if boot animation finished..."); 1953 } 1954 1955 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1956 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1957 BOOT_ANIMATION_POLL_INTERVAL); 1958 return; 1959 } 1960 1961 synchronized (mLock) { 1962 if (!mBootCompleted) { 1963 Slog.i(TAG, "Boot animation finished."); 1964 handleBootCompletedLocked(); 1965 } 1966 } 1967 } 1968 1969 private void handleBootCompletedLocked() { 1970 final long now = SystemClock.uptimeMillis(); 1971 mBootCompleted = true; 1972 mDirty |= DIRTY_BOOT_COMPLETED; 1973 userActivityNoUpdateLocked( 1974 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1975 updatePowerStateLocked(); 1976 } 1977 1978 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1979 final String reason, boolean wait) { 1980 if (mHandler == null || !mSystemReady) { 1981 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1982 } 1983 1984 Runnable runnable = new Runnable() { 1985 @Override 1986 public void run() { 1987 synchronized (this) { 1988 if (shutdown) { 1989 ShutdownThread.shutdown(mContext, confirm); 1990 } else { 1991 ShutdownThread.reboot(mContext, reason, confirm); 1992 } 1993 } 1994 } 1995 }; 1996 1997 // ShutdownThread must run on a looper capable of displaying the UI. 1998 Message msg = Message.obtain(mHandler, runnable); 1999 msg.setAsynchronous(true); 2000 mHandler.sendMessage(msg); 2001 2002 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 2003 if (wait) { 2004 synchronized (runnable) { 2005 while (true) { 2006 try { 2007 runnable.wait(); 2008 } catch (InterruptedException e) { 2009 } 2010 } 2011 } 2012 } 2013 } 2014 2015 private void crashInternal(final String message) { 2016 Thread t = new Thread("PowerManagerService.crash()") { 2017 @Override 2018 public void run() { 2019 throw new RuntimeException(message); 2020 } 2021 }; 2022 try { 2023 t.start(); 2024 t.join(); 2025 } catch (InterruptedException e) { 2026 Log.wtf(TAG, e); 2027 } 2028 } 2029 2030 private void setStayOnSettingInternal(int val) { 2031 Settings.Global.putInt(mContext.getContentResolver(), 2032 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 2033 } 2034 2035 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 2036 synchronized (mLock) { 2037 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 2038 mDirty |= DIRTY_SETTINGS; 2039 updatePowerStateLocked(); 2040 } 2041 } 2042 2043 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 2044 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 2045 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 2046 } 2047 2048 private void setAttentionLightInternal(boolean on, int color) { 2049 Light light; 2050 synchronized (mLock) { 2051 if (!mSystemReady) { 2052 return; 2053 } 2054 light = mAttentionLight; 2055 } 2056 2057 // Control light outside of lock. 2058 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 2059 } 2060 2061 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 2062 synchronized (mLock) { 2063 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 2064 mScreenBrightnessOverrideFromWindowManager = brightness; 2065 mDirty |= DIRTY_SETTINGS; 2066 updatePowerStateLocked(); 2067 } 2068 } 2069 } 2070 2071 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 2072 synchronized (mLock) { 2073 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 2074 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 2075 mDirty |= DIRTY_SETTINGS; 2076 updatePowerStateLocked(); 2077 } 2078 } 2079 } 2080 2081 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2082 synchronized (mLock) { 2083 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2084 mTemporaryScreenBrightnessSettingOverride = brightness; 2085 mDirty |= DIRTY_SETTINGS; 2086 updatePowerStateLocked(); 2087 } 2088 } 2089 } 2090 2091 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2092 synchronized (mLock) { 2093 // Note: This condition handles NaN because NaN is not equal to any other 2094 // value, including itself. 2095 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2096 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2097 mDirty |= DIRTY_SETTINGS; 2098 updatePowerStateLocked(); 2099 } 2100 } 2101 } 2102 2103 private void powerHintInternal(int hintId, int data) { 2104 nativeSendPowerHint(hintId, data); 2105 } 2106 2107 /** 2108 * Low-level function turn the device off immediately, without trying 2109 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2110 */ 2111 public static void lowLevelShutdown() { 2112 SystemProperties.set("sys.powerctl", "shutdown"); 2113 } 2114 2115 /** 2116 * Low-level function to reboot the device. On success, this 2117 * function doesn't return. If more than 20 seconds passes from 2118 * the time a reboot is requested (120 seconds for reboot to 2119 * recovery), this method returns. 2120 * 2121 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2122 */ 2123 public static void lowLevelReboot(String reason) { 2124 if (reason == null) { 2125 reason = ""; 2126 } 2127 long duration; 2128 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2129 // If we are rebooting to go into recovery, instead of 2130 // setting sys.powerctl directly we'll start the 2131 // pre-recovery service which will do some preparation for 2132 // recovery and then reboot for us. 2133 // 2134 // This preparation can take more than 20 seconds if 2135 // there's a very large update package, so lengthen the 2136 // timeout. 2137 SystemProperties.set("ctl.start", "pre-recovery"); 2138 duration = 120 * 1000L; 2139 } else { 2140 SystemProperties.set("sys.powerctl", "reboot," + reason); 2141 duration = 20 * 1000L; 2142 } 2143 try { 2144 Thread.sleep(duration); 2145 } catch (InterruptedException e) { 2146 Thread.currentThread().interrupt(); 2147 } 2148 } 2149 2150 @Override // Watchdog.Monitor implementation 2151 public void monitor() { 2152 // Grab and release lock for watchdog monitor to detect deadlocks. 2153 synchronized (mLock) { 2154 } 2155 } 2156 2157 private void dumpInternal(PrintWriter pw) { 2158 pw.println("POWER MANAGER (dumpsys power)\n"); 2159 2160 final WirelessChargerDetector wcd; 2161 synchronized (mLock) { 2162 pw.println("Power Manager State:"); 2163 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2164 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2165 pw.println(" mInteractive=" + mInteractive); 2166 pw.println(" mIsPowered=" + mIsPowered); 2167 pw.println(" mPlugType=" + mPlugType); 2168 pw.println(" mBatteryLevel=" + mBatteryLevel); 2169 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2170 pw.println(" mDockState=" + mDockState); 2171 pw.println(" mStayOn=" + mStayOn); 2172 pw.println(" mProximityPositive=" + mProximityPositive); 2173 pw.println(" mBootCompleted=" + mBootCompleted); 2174 pw.println(" mSystemReady=" + mSystemReady); 2175 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2176 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2177 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2178 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2179 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2180 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2181 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2182 pw.println(" mLowPowerModeEnabled=" + mLowPowerModeEnabled); 2183 pw.println(" mBatteryLevelLow=" + mBatteryLevelLow); 2184 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2185 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2186 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2187 pw.println(" mLastUserActivityTimeNoChangeLights=" 2188 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2189 pw.println(" mDisplayReady=" + mDisplayReady); 2190 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2191 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2192 2193 pw.println(); 2194 pw.println("Settings and Configuration:"); 2195 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2196 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2197 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2198 + mDecoupleHalInteractiveModeFromDisplayConfig); 2199 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2200 + mWakeUpWhenPluggedOrUnpluggedConfig); 2201 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2202 + mSuspendWhenScreenOffDueToProximityConfig); 2203 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2204 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2205 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2206 + mDreamsActivatedOnSleepByDefaultConfig); 2207 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2208 + mDreamsActivatedOnDockByDefaultConfig); 2209 pw.println(" mDreamsEnabledOnBatteryConfig=" 2210 + mDreamsEnabledOnBatteryConfig); 2211 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2212 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2213 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2214 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2215 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2216 + mDreamsBatteryLevelDrainCutoffConfig); 2217 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2218 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2219 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2220 pw.println(" mLowPowerModeSetting=" + mLowPowerModeSetting); 2221 pw.println(" mAutoLowPowerModeEnabled=" + mAutoLowPowerModeEnabled); 2222 pw.println(" mMinimumScreenOffTimeoutConfig=" + mMinimumScreenOffTimeoutConfig); 2223 pw.println(" mMaximumScreenDimDurationConfig=" + mMaximumScreenDimDurationConfig); 2224 pw.println(" mMaximumScreenDimRatioConfig=" + mMaximumScreenDimRatioConfig); 2225 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2226 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2227 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2228 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2229 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2230 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2231 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2232 + mScreenAutoBrightnessAdjustmentSetting); 2233 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2234 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2235 + mScreenBrightnessOverrideFromWindowManager); 2236 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2237 + mUserActivityTimeoutOverrideFromWindowManager); 2238 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2239 + mTemporaryScreenBrightnessSettingOverride); 2240 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2241 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2242 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2243 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2244 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2245 2246 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2247 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2248 pw.println(); 2249 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2250 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2251 2252 pw.println(); 2253 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2254 for (WakeLock wl : mWakeLocks) { 2255 pw.println(" " + wl); 2256 } 2257 2258 pw.println(); 2259 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2260 for (SuspendBlocker sb : mSuspendBlockers) { 2261 pw.println(" " + sb); 2262 } 2263 2264 pw.println(); 2265 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2266 2267 pw.println(); 2268 pw.println("Display Power: " + mDisplayPowerCallbacks); 2269 2270 wcd = mWirelessChargerDetector; 2271 } 2272 2273 if (wcd != null) { 2274 wcd.dump(pw); 2275 } 2276 } 2277 2278 private SuspendBlocker createSuspendBlockerLocked(String name) { 2279 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2280 mSuspendBlockers.add(suspendBlocker); 2281 return suspendBlocker; 2282 } 2283 2284 private static String wakefulnessToString(int wakefulness) { 2285 switch (wakefulness) { 2286 case WAKEFULNESS_ASLEEP: 2287 return "Asleep"; 2288 case WAKEFULNESS_AWAKE: 2289 return "Awake"; 2290 case WAKEFULNESS_DREAMING: 2291 return "Dreaming"; 2292 case WAKEFULNESS_DOZING: 2293 return "Dozing"; 2294 default: 2295 return Integer.toString(wakefulness); 2296 } 2297 } 2298 2299 private static WorkSource copyWorkSource(WorkSource workSource) { 2300 return workSource != null ? new WorkSource(workSource) : null; 2301 } 2302 2303 private final class BatteryReceiver extends BroadcastReceiver { 2304 @Override 2305 public void onReceive(Context context, Intent intent) { 2306 synchronized (mLock) { 2307 handleBatteryStateChangedLocked(); 2308 } 2309 } 2310 } 2311 2312 private final class BootCompletedReceiver extends BroadcastReceiver { 2313 @Override 2314 public void onReceive(Context context, Intent intent) { 2315 // This is our early signal that the system thinks it has finished booting. 2316 // However, the boot animation may still be running for a few more seconds 2317 // since it is ultimately in charge of when it terminates. 2318 // Defer transitioning into the boot completed state until the animation exits. 2319 // We do this so that the screen does not start to dim prematurely before 2320 // the user has actually had a chance to interact with the device. 2321 startWatchingForBootAnimationFinished(); 2322 } 2323 } 2324 2325 private final class DreamReceiver extends BroadcastReceiver { 2326 @Override 2327 public void onReceive(Context context, Intent intent) { 2328 synchronized (mLock) { 2329 scheduleSandmanLocked(); 2330 } 2331 } 2332 } 2333 2334 private final class UserSwitchedReceiver extends BroadcastReceiver { 2335 @Override 2336 public void onReceive(Context context, Intent intent) { 2337 synchronized (mLock) { 2338 handleSettingsChangedLocked(); 2339 } 2340 } 2341 } 2342 2343 private final class DockReceiver extends BroadcastReceiver { 2344 @Override 2345 public void onReceive(Context context, Intent intent) { 2346 synchronized (mLock) { 2347 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2348 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2349 if (mDockState != dockState) { 2350 mDockState = dockState; 2351 mDirty |= DIRTY_DOCK_STATE; 2352 updatePowerStateLocked(); 2353 } 2354 } 2355 } 2356 } 2357 2358 private final class SettingsObserver extends ContentObserver { 2359 public SettingsObserver(Handler handler) { 2360 super(handler); 2361 } 2362 2363 @Override 2364 public void onChange(boolean selfChange, Uri uri) { 2365 synchronized (mLock) { 2366 handleSettingsChangedLocked(); 2367 } 2368 } 2369 } 2370 2371 /** 2372 * Handler for asynchronous operations performed by the power manager. 2373 */ 2374 private final class PowerManagerHandler extends Handler { 2375 public PowerManagerHandler(Looper looper) { 2376 super(looper, null, true /*async*/); 2377 } 2378 2379 @Override 2380 public void handleMessage(Message msg) { 2381 switch (msg.what) { 2382 case MSG_USER_ACTIVITY_TIMEOUT: 2383 handleUserActivityTimeout(); 2384 break; 2385 case MSG_SANDMAN: 2386 handleSandman(); 2387 break; 2388 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2389 handleScreenOnBlockerReleased(); 2390 break; 2391 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2392 checkIfBootAnimationFinished(); 2393 break; 2394 } 2395 } 2396 } 2397 2398 /** 2399 * Represents a wake lock that has been acquired by an application. 2400 */ 2401 private final class WakeLock implements IBinder.DeathRecipient { 2402 public final IBinder mLock; 2403 public int mFlags; 2404 public String mTag; 2405 public final String mPackageName; 2406 public WorkSource mWorkSource; 2407 public String mHistoryTag; 2408 public final int mOwnerUid; 2409 public final int mOwnerPid; 2410 public boolean mNotifiedAcquired; 2411 2412 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2413 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2414 mLock = lock; 2415 mFlags = flags; 2416 mTag = tag; 2417 mPackageName = packageName; 2418 mWorkSource = copyWorkSource(workSource); 2419 mHistoryTag = historyTag; 2420 mOwnerUid = ownerUid; 2421 mOwnerPid = ownerPid; 2422 } 2423 2424 @Override 2425 public void binderDied() { 2426 PowerManagerService.this.handleWakeLockDeath(this); 2427 } 2428 2429 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2430 int ownerUid, int ownerPid) { 2431 return mFlags == flags 2432 && mTag.equals(tag) 2433 && hasSameWorkSource(workSource) 2434 && mOwnerUid == ownerUid 2435 && mOwnerPid == ownerPid; 2436 } 2437 2438 public void updateProperties(int flags, String tag, String packageName, 2439 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2440 if (!mPackageName.equals(packageName)) { 2441 throw new IllegalStateException("Existing wake lock package name changed: " 2442 + mPackageName + " to " + packageName); 2443 } 2444 if (mOwnerUid != ownerUid) { 2445 throw new IllegalStateException("Existing wake lock uid changed: " 2446 + mOwnerUid + " to " + ownerUid); 2447 } 2448 if (mOwnerPid != ownerPid) { 2449 throw new IllegalStateException("Existing wake lock pid changed: " 2450 + mOwnerPid + " to " + ownerPid); 2451 } 2452 mFlags = flags; 2453 mTag = tag; 2454 updateWorkSource(workSource); 2455 mHistoryTag = historyTag; 2456 } 2457 2458 public boolean hasSameWorkSource(WorkSource workSource) { 2459 return Objects.equal(mWorkSource, workSource); 2460 } 2461 2462 public void updateWorkSource(WorkSource workSource) { 2463 mWorkSource = copyWorkSource(workSource); 2464 } 2465 2466 @Override 2467 public String toString() { 2468 return getLockLevelString() 2469 + " '" + mTag + "'" + getLockFlagsString() 2470 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2471 } 2472 2473 @SuppressWarnings("deprecation") 2474 private String getLockLevelString() { 2475 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2476 case PowerManager.FULL_WAKE_LOCK: 2477 return "FULL_WAKE_LOCK "; 2478 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2479 return "SCREEN_BRIGHT_WAKE_LOCK "; 2480 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2481 return "SCREEN_DIM_WAKE_LOCK "; 2482 case PowerManager.PARTIAL_WAKE_LOCK: 2483 return "PARTIAL_WAKE_LOCK "; 2484 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2485 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2486 case PowerManager.DOZE_WAKE_LOCK: 2487 return "DOZE_WAKE_LOCK "; 2488 default: 2489 return "??? "; 2490 } 2491 } 2492 2493 private String getLockFlagsString() { 2494 String result = ""; 2495 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2496 result += " ACQUIRE_CAUSES_WAKEUP"; 2497 } 2498 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2499 result += " ON_AFTER_RELEASE"; 2500 } 2501 return result; 2502 } 2503 } 2504 2505 private final class SuspendBlockerImpl implements SuspendBlocker { 2506 private final String mName; 2507 private int mReferenceCount; 2508 2509 public SuspendBlockerImpl(String name) { 2510 mName = name; 2511 } 2512 2513 @Override 2514 protected void finalize() throws Throwable { 2515 try { 2516 if (mReferenceCount != 0) { 2517 Log.wtf(TAG, "Suspend blocker \"" + mName 2518 + "\" was finalized without being released!"); 2519 mReferenceCount = 0; 2520 nativeReleaseSuspendBlocker(mName); 2521 } 2522 } finally { 2523 super.finalize(); 2524 } 2525 } 2526 2527 @Override 2528 public void acquire() { 2529 synchronized (this) { 2530 mReferenceCount += 1; 2531 if (mReferenceCount == 1) { 2532 if (DEBUG_SPEW) { 2533 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2534 } 2535 nativeAcquireSuspendBlocker(mName); 2536 } 2537 } 2538 } 2539 2540 @Override 2541 public void release() { 2542 synchronized (this) { 2543 mReferenceCount -= 1; 2544 if (mReferenceCount == 0) { 2545 if (DEBUG_SPEW) { 2546 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2547 } 2548 nativeReleaseSuspendBlocker(mName); 2549 } else if (mReferenceCount < 0) { 2550 Log.wtf(TAG, "Suspend blocker \"" + mName 2551 + "\" was released without being acquired!", new Throwable()); 2552 mReferenceCount = 0; 2553 } 2554 } 2555 } 2556 2557 @Override 2558 public String toString() { 2559 synchronized (this) { 2560 return mName + ": ref count=" + mReferenceCount; 2561 } 2562 } 2563 } 2564 2565 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2566 private int mNestCount; 2567 2568 public boolean isHeld() { 2569 synchronized (this) { 2570 return mNestCount != 0; 2571 } 2572 } 2573 2574 @Override 2575 public void acquire() { 2576 synchronized (this) { 2577 mNestCount += 1; 2578 if (DEBUG) { 2579 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2580 } 2581 } 2582 } 2583 2584 @Override 2585 public void release() { 2586 synchronized (this) { 2587 mNestCount -= 1; 2588 if (mNestCount < 0) { 2589 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2590 new Throwable()); 2591 mNestCount = 0; 2592 } 2593 if (mNestCount == 0) { 2594 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2595 } 2596 if (DEBUG) { 2597 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2598 } 2599 } 2600 } 2601 2602 @Override 2603 public String toString() { 2604 synchronized (this) { 2605 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2606 } 2607 } 2608 } 2609 2610 private final class BinderService extends IPowerManager.Stub { 2611 @Override // Binder call 2612 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2613 String packageName, int uid) { 2614 if (uid < 0) { 2615 uid = Binder.getCallingUid(); 2616 } 2617 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2618 } 2619 2620 @Override // Binder call 2621 public void powerHint(int hintId, int data) { 2622 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2623 powerHintInternal(hintId, data); 2624 } 2625 2626 @Override // Binder call 2627 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2628 WorkSource ws, String historyTag) { 2629 if (lock == null) { 2630 throw new IllegalArgumentException("lock must not be null"); 2631 } 2632 if (packageName == null) { 2633 throw new IllegalArgumentException("packageName must not be null"); 2634 } 2635 PowerManager.validateWakeLockParameters(flags, tag); 2636 2637 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2638 if (ws != null && ws.size() != 0) { 2639 mContext.enforceCallingOrSelfPermission( 2640 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2641 } else { 2642 ws = null; 2643 } 2644 2645 final int uid = Binder.getCallingUid(); 2646 final int pid = Binder.getCallingPid(); 2647 final long ident = Binder.clearCallingIdentity(); 2648 try { 2649 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2650 } finally { 2651 Binder.restoreCallingIdentity(ident); 2652 } 2653 } 2654 2655 @Override // Binder call 2656 public void releaseWakeLock(IBinder lock, int flags) { 2657 if (lock == null) { 2658 throw new IllegalArgumentException("lock must not be null"); 2659 } 2660 2661 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2662 2663 final long ident = Binder.clearCallingIdentity(); 2664 try { 2665 releaseWakeLockInternal(lock, flags); 2666 } finally { 2667 Binder.restoreCallingIdentity(ident); 2668 } 2669 } 2670 2671 @Override // Binder call 2672 public void updateWakeLockUids(IBinder lock, int[] uids) { 2673 WorkSource ws = null; 2674 2675 if (uids != null) { 2676 ws = new WorkSource(); 2677 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2678 // one at a time? 2679 for (int i = 0; i < uids.length; i++) { 2680 ws.add(uids[i]); 2681 } 2682 } 2683 updateWakeLockWorkSource(lock, ws, null); 2684 } 2685 2686 @Override // Binder call 2687 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2688 if (lock == null) { 2689 throw new IllegalArgumentException("lock must not be null"); 2690 } 2691 2692 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2693 if (ws != null && ws.size() != 0) { 2694 mContext.enforceCallingOrSelfPermission( 2695 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2696 } else { 2697 ws = null; 2698 } 2699 2700 final long ident = Binder.clearCallingIdentity(); 2701 try { 2702 updateWakeLockWorkSourceInternal(lock, ws, historyTag); 2703 } finally { 2704 Binder.restoreCallingIdentity(ident); 2705 } 2706 } 2707 2708 @Override // Binder call 2709 public boolean isWakeLockLevelSupported(int level) { 2710 final long ident = Binder.clearCallingIdentity(); 2711 try { 2712 return isWakeLockLevelSupportedInternal(level); 2713 } finally { 2714 Binder.restoreCallingIdentity(ident); 2715 } 2716 } 2717 2718 @Override // Binder call 2719 public void userActivity(long eventTime, int event, int flags) { 2720 final long now = SystemClock.uptimeMillis(); 2721 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2722 != PackageManager.PERMISSION_GRANTED) { 2723 // Once upon a time applications could call userActivity(). 2724 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2725 // request instead of throwing a SecurityException so we don't break old apps. 2726 synchronized (mLock) { 2727 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2728 mLastWarningAboutUserActivityPermission = now; 2729 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2730 + "caller does not have DEVICE_POWER permission. " 2731 + "Please fix your app! " 2732 + " pid=" + Binder.getCallingPid() 2733 + " uid=" + Binder.getCallingUid()); 2734 } 2735 } 2736 return; 2737 } 2738 2739 if (eventTime > SystemClock.uptimeMillis()) { 2740 throw new IllegalArgumentException("event time must not be in the future"); 2741 } 2742 2743 final int uid = Binder.getCallingUid(); 2744 final long ident = Binder.clearCallingIdentity(); 2745 try { 2746 userActivityInternal(eventTime, event, flags, uid); 2747 } finally { 2748 Binder.restoreCallingIdentity(ident); 2749 } 2750 } 2751 2752 @Override // Binder call 2753 public void wakeUp(long eventTime) { 2754 if (eventTime > SystemClock.uptimeMillis()) { 2755 throw new IllegalArgumentException("event time must not be in the future"); 2756 } 2757 2758 mContext.enforceCallingOrSelfPermission( 2759 android.Manifest.permission.DEVICE_POWER, null); 2760 2761 final long ident = Binder.clearCallingIdentity(); 2762 try { 2763 wakeUpInternal(eventTime); 2764 } finally { 2765 Binder.restoreCallingIdentity(ident); 2766 } 2767 } 2768 2769 @Override // Binder call 2770 public void goToSleep(long eventTime, int reason, int flags) { 2771 if (eventTime > SystemClock.uptimeMillis()) { 2772 throw new IllegalArgumentException("event time must not be in the future"); 2773 } 2774 2775 mContext.enforceCallingOrSelfPermission( 2776 android.Manifest.permission.DEVICE_POWER, null); 2777 2778 final long ident = Binder.clearCallingIdentity(); 2779 try { 2780 goToSleepInternal(eventTime, reason, flags); 2781 } finally { 2782 Binder.restoreCallingIdentity(ident); 2783 } 2784 } 2785 2786 @Override // Binder call 2787 public void nap(long eventTime) { 2788 if (eventTime > SystemClock.uptimeMillis()) { 2789 throw new IllegalArgumentException("event time must not be in the future"); 2790 } 2791 2792 mContext.enforceCallingOrSelfPermission( 2793 android.Manifest.permission.DEVICE_POWER, null); 2794 2795 final long ident = Binder.clearCallingIdentity(); 2796 try { 2797 napInternal(eventTime); 2798 } finally { 2799 Binder.restoreCallingIdentity(ident); 2800 } 2801 } 2802 2803 @Override // Binder call 2804 public boolean isInteractive() { 2805 final long ident = Binder.clearCallingIdentity(); 2806 try { 2807 return isInteractiveInternal(); 2808 } finally { 2809 Binder.restoreCallingIdentity(ident); 2810 } 2811 } 2812 2813 @Override // Binder call 2814 public boolean isPowerSaveMode() { 2815 final long ident = Binder.clearCallingIdentity(); 2816 try { 2817 return isLowPowerModeInternal(); 2818 } finally { 2819 Binder.restoreCallingIdentity(ident); 2820 } 2821 } 2822 2823 /** 2824 * Reboots the device. 2825 * 2826 * @param confirm If true, shows a reboot confirmation dialog. 2827 * @param reason The reason for the reboot, or null if none. 2828 * @param wait If true, this call waits for the reboot to complete and does not return. 2829 */ 2830 @Override // Binder call 2831 public void reboot(boolean confirm, String reason, boolean wait) { 2832 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2833 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2834 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2835 } 2836 2837 final long ident = Binder.clearCallingIdentity(); 2838 try { 2839 shutdownOrRebootInternal(false, confirm, reason, wait); 2840 } finally { 2841 Binder.restoreCallingIdentity(ident); 2842 } 2843 } 2844 2845 /** 2846 * Shuts down the device. 2847 * 2848 * @param confirm If true, shows a shutdown confirmation dialog. 2849 * @param wait If true, this call waits for the shutdown to complete and does not return. 2850 */ 2851 @Override // Binder call 2852 public void shutdown(boolean confirm, boolean wait) { 2853 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2854 2855 final long ident = Binder.clearCallingIdentity(); 2856 try { 2857 shutdownOrRebootInternal(true, confirm, null, wait); 2858 } finally { 2859 Binder.restoreCallingIdentity(ident); 2860 } 2861 } 2862 2863 /** 2864 * Crash the runtime (causing a complete restart of the Android framework). 2865 * Requires REBOOT permission. Mostly for testing. Should not return. 2866 */ 2867 @Override // Binder call 2868 public void crash(String message) { 2869 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2870 2871 final long ident = Binder.clearCallingIdentity(); 2872 try { 2873 crashInternal(message); 2874 } finally { 2875 Binder.restoreCallingIdentity(ident); 2876 } 2877 } 2878 2879 /** 2880 * Set the setting that determines whether the device stays on when plugged in. 2881 * The argument is a bit string, with each bit specifying a power source that, 2882 * when the device is connected to that source, causes the device to stay on. 2883 * See {@link android.os.BatteryManager} for the list of power sources that 2884 * can be specified. Current values include 2885 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2886 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2887 * 2888 * Used by "adb shell svc power stayon ..." 2889 * 2890 * @param val an {@code int} containing the bits that specify which power sources 2891 * should cause the device to stay on. 2892 */ 2893 @Override // Binder call 2894 public void setStayOnSetting(int val) { 2895 mContext.enforceCallingOrSelfPermission( 2896 android.Manifest.permission.WRITE_SETTINGS, null); 2897 2898 final long ident = Binder.clearCallingIdentity(); 2899 try { 2900 setStayOnSettingInternal(val); 2901 } finally { 2902 Binder.restoreCallingIdentity(ident); 2903 } 2904 } 2905 2906 /** 2907 * Used by device administration to set the maximum screen off timeout. 2908 * 2909 * This method must only be called by the device administration policy manager. 2910 */ 2911 @Override // Binder call 2912 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2913 final long ident = Binder.clearCallingIdentity(); 2914 try { 2915 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2916 } finally { 2917 Binder.restoreCallingIdentity(ident); 2918 } 2919 } 2920 2921 /** 2922 * Used by the settings application and brightness control widgets to 2923 * temporarily override the current screen brightness setting so that the 2924 * user can observe the effect of an intended settings change without applying 2925 * it immediately. 2926 * 2927 * The override will be canceled when the setting value is next updated. 2928 * 2929 * @param brightness The overridden brightness. 2930 * 2931 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2932 */ 2933 @Override // Binder call 2934 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2935 mContext.enforceCallingOrSelfPermission( 2936 android.Manifest.permission.DEVICE_POWER, null); 2937 2938 final long ident = Binder.clearCallingIdentity(); 2939 try { 2940 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2941 } finally { 2942 Binder.restoreCallingIdentity(ident); 2943 } 2944 } 2945 2946 /** 2947 * Used by the settings application and brightness control widgets to 2948 * temporarily override the current screen auto-brightness adjustment setting so that the 2949 * user can observe the effect of an intended settings change without applying 2950 * it immediately. 2951 * 2952 * The override will be canceled when the setting value is next updated. 2953 * 2954 * @param adj The overridden brightness, or Float.NaN to disable the override. 2955 * 2956 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2957 */ 2958 @Override // Binder call 2959 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2960 mContext.enforceCallingOrSelfPermission( 2961 android.Manifest.permission.DEVICE_POWER, null); 2962 2963 final long ident = Binder.clearCallingIdentity(); 2964 try { 2965 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2966 } finally { 2967 Binder.restoreCallingIdentity(ident); 2968 } 2969 } 2970 2971 /** 2972 * Used by the phone application to make the attention LED flash when ringing. 2973 */ 2974 @Override // Binder call 2975 public void setAttentionLight(boolean on, int color) { 2976 mContext.enforceCallingOrSelfPermission( 2977 android.Manifest.permission.DEVICE_POWER, null); 2978 2979 final long ident = Binder.clearCallingIdentity(); 2980 try { 2981 setAttentionLightInternal(on, color); 2982 } finally { 2983 Binder.restoreCallingIdentity(ident); 2984 } 2985 } 2986 2987 @Override // Binder call 2988 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2989 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2990 != PackageManager.PERMISSION_GRANTED) { 2991 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2992 + Binder.getCallingPid() 2993 + ", uid=" + Binder.getCallingUid()); 2994 return; 2995 } 2996 2997 final long ident = Binder.clearCallingIdentity(); 2998 try { 2999 dumpInternal(pw); 3000 } finally { 3001 Binder.restoreCallingIdentity(ident); 3002 } 3003 } 3004 } 3005 3006 private final class LocalService extends PowerManagerInternal { 3007 /** 3008 * Used by the window manager to override the screen brightness based on the 3009 * current foreground activity. 3010 * 3011 * This method must only be called by the window manager. 3012 * 3013 * @param brightness The overridden brightness, or -1 to disable the override. 3014 */ 3015 @Override 3016 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 3017 mContext.enforceCallingOrSelfPermission( 3018 android.Manifest.permission.DEVICE_POWER, null); 3019 3020 final long ident = Binder.clearCallingIdentity(); 3021 try { 3022 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 3023 } finally { 3024 Binder.restoreCallingIdentity(ident); 3025 } 3026 } 3027 3028 /** 3029 * Used by the window manager to override the button brightness based on the 3030 * current foreground activity. 3031 * 3032 * This method must only be called by the window manager. 3033 * 3034 * @param brightness The overridden brightness, or -1 to disable the override. 3035 */ 3036 @Override 3037 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 3038 // Do nothing. 3039 // Button lights are not currently supported in the new implementation. 3040 mContext.enforceCallingOrSelfPermission( 3041 android.Manifest.permission.DEVICE_POWER, null); 3042 } 3043 3044 /** 3045 * Used by the window manager to override the user activity timeout based on the 3046 * current foreground activity. It can only be used to make the timeout shorter 3047 * than usual, not longer. 3048 * 3049 * This method must only be called by the window manager. 3050 * 3051 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 3052 */ 3053 @Override 3054 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 3055 mContext.enforceCallingOrSelfPermission( 3056 android.Manifest.permission.DEVICE_POWER, null); 3057 3058 final long ident = Binder.clearCallingIdentity(); 3059 try { 3060 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 3061 } finally { 3062 Binder.restoreCallingIdentity(ident); 3063 } 3064 } 3065 3066 @Override 3067 public boolean getLowPowerModeEnabled() { 3068 synchronized (mLock) { 3069 return mLowPowerModeEnabled; 3070 } 3071 } 3072 3073 @Override 3074 public void registerLowPowerModeObserver(LowPowerModeListener listener) { 3075 synchronized (mLock) { 3076 mLowPowerModeListeners.add(listener); 3077 } 3078 } 3079 3080 @Override 3081 public void setPolicy(WindowManagerPolicy policy) { 3082 PowerManagerService.this.setPolicy(policy); 3083 } 3084 } 3085} 3086