PowerManagerService.java revision 62b8a49856cc0822905dcb7a213f082b92fa69e3
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.power; 18 19import com.android.internal.app.IAppOpsService; 20import com.android.internal.app.IBatteryStats; 21import com.android.server.BatteryService; 22import com.android.server.EventLogTags; 23import com.android.server.LocalServices; 24import com.android.server.ServiceThread; 25import com.android.server.lights.Light; 26import com.android.server.lights.LightsManager; 27import com.android.server.Watchdog; 28 29import android.Manifest; 30import android.content.BroadcastReceiver; 31import android.content.ContentResolver; 32import android.content.Context; 33import android.content.Intent; 34import android.content.IntentFilter; 35import android.content.pm.PackageManager; 36import android.content.res.Resources; 37import android.database.ContentObserver; 38import android.hardware.SensorManager; 39import android.hardware.SystemSensorManager; 40import android.hardware.display.DisplayManagerInternal; 41import android.hardware.display.DisplayManagerInternal.DisplayPowerRequest; 42import android.net.Uri; 43import android.os.BatteryManager; 44import android.os.Binder; 45import android.os.Handler; 46import android.os.IBinder; 47import android.os.IPowerManager; 48import android.os.Looper; 49import android.os.Message; 50import android.os.PowerManager; 51import android.os.PowerManagerInternal; 52import android.os.Process; 53import android.os.RemoteException; 54import android.os.SystemClock; 55import android.os.SystemProperties; 56import android.os.SystemService; 57import android.os.UserHandle; 58import android.os.WorkSource; 59import android.provider.Settings; 60import android.service.dreams.DreamManagerInternal; 61import android.util.EventLog; 62import android.util.Log; 63import android.util.Slog; 64import android.util.TimeUtils; 65import android.view.Display; 66import android.view.WindowManagerPolicy; 67 68import java.io.FileDescriptor; 69import java.io.PrintWriter; 70import java.util.ArrayList; 71 72import libcore.util.Objects; 73 74/** 75 * The power manager service is responsible for coordinating power management 76 * functions on the device. 77 */ 78public final class PowerManagerService extends com.android.server.SystemService 79 implements Watchdog.Monitor { 80 private static final String TAG = "PowerManagerService"; 81 82 private static final boolean DEBUG = false; 83 private static final boolean DEBUG_SPEW = DEBUG && true; 84 85 // Message: Sent when a user activity timeout occurs to update the power state. 86 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 87 // Message: Sent when the device enters or exits a dreaming or dozing state. 88 private static final int MSG_SANDMAN = 2; 89 // Message: Sent when the screen on blocker is released. 90 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 91 // Message: Sent to poll whether the boot animation has terminated. 92 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 93 94 // Dirty bit: mWakeLocks changed 95 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 96 // Dirty bit: mWakefulness changed 97 private static final int DIRTY_WAKEFULNESS = 1 << 1; 98 // Dirty bit: user activity was poked or may have timed out 99 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 100 // Dirty bit: actual display power state was updated asynchronously 101 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 102 // Dirty bit: mBootCompleted changed 103 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 104 // Dirty bit: settings changed 105 private static final int DIRTY_SETTINGS = 1 << 5; 106 // Dirty bit: mIsPowered changed 107 private static final int DIRTY_IS_POWERED = 1 << 6; 108 // Dirty bit: mStayOn changed 109 private static final int DIRTY_STAY_ON = 1 << 7; 110 // Dirty bit: battery state changed 111 private static final int DIRTY_BATTERY_STATE = 1 << 8; 112 // Dirty bit: proximity state changed 113 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 114 // Dirty bit: screen on blocker state became held or unheld 115 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 116 // Dirty bit: dock state changed 117 private static final int DIRTY_DOCK_STATE = 1 << 11; 118 119 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 120 // The screen should be off or in the process of being turned off by the display controller. 121 // The device typically passes through the dozing state first. 122 private static final int WAKEFULNESS_ASLEEP = 0; 123 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 124 // When the user activity timeout expires, the device may start dreaming or go to sleep. 125 private static final int WAKEFULNESS_AWAKE = 1; 126 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 127 // which ends the dream. The device goes to sleep when goToSleep() is called, when 128 // the dream ends or when unplugged. 129 // User activity may brighten the screen but does not end the dream. 130 private static final int WAKEFULNESS_DREAMING = 2; 131 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 132 // low-power "doze" dream to run which keeps the display on but lets the application 133 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 134 // The device fully goes to sleep if the dream cannot be started or ends on its own. 135 private static final int WAKEFULNESS_DOZING = 3; 136 137 // Summarizes the state of all active wakelocks. 138 private static final int WAKE_LOCK_CPU = 1 << 0; 139 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 140 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 141 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 142 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 143 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 144 private static final int WAKE_LOCK_DOZE = 1 << 6; 145 146 // Summarizes the user activity state. 147 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 148 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 149 150 // Default and minimum screen off timeout in milliseconds. 151 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 152 private static final int MINIMUM_SCREEN_OFF_TIMEOUT = 10 * 1000; 153 154 // The screen dim duration, in milliseconds. 155 // This is subtracted from the end of the screen off timeout so the 156 // minimum screen off timeout should be longer than this. 157 private static final int SCREEN_DIM_DURATION = 7 * 1000; 158 159 // The maximum screen dim time expressed as a ratio relative to the screen 160 // off timeout. If the screen off timeout is very short then we want the 161 // dim timeout to also be quite short so that most of the time is spent on. 162 // Otherwise the user won't get much screen on time before dimming occurs. 163 private static final float MAXIMUM_SCREEN_DIM_RATIO = 0.2f; 164 165 // The name of the boot animation service in init.rc. 166 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 167 168 // Poll interval in milliseconds for watching boot animation finished. 169 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 170 171 //powerHint 172 private static final int POWER_HINT_LOW_POWER_MODE = 5; 173 private static boolean mLowPowerModeEnabled; 174 175 private final Context mContext; 176 private LightsManager mLightsManager; 177 private BatteryService mBatteryService; 178 private DisplayManagerInternal mDisplayManagerInternal; 179 private IBatteryStats mBatteryStats; 180 private IAppOpsService mAppOps; 181 private ServiceThread mHandlerThread; 182 private PowerManagerHandler mHandler; 183 private WindowManagerPolicy mPolicy; 184 private Notifier mNotifier; 185 private WirelessChargerDetector mWirelessChargerDetector; 186 private SettingsObserver mSettingsObserver; 187 private DreamManagerInternal mDreamManager; 188 private Light mAttentionLight; 189 190 private final Object mLock = new Object(); 191 192 // A bitfield that indicates what parts of the power state have 193 // changed and need to be recalculated. 194 private int mDirty; 195 196 // Indicates whether the device is awake or asleep or somewhere in between. 197 // This is distinct from the screen power state, which is managed separately. 198 private int mWakefulness; 199 200 // True if the sandman has just been summoned for the first time since entering the 201 // dreaming or dozing state. Indicates whether a new dream should begin. 202 private boolean mSandmanSummoned; 203 204 // True if MSG_SANDMAN has been scheduled. 205 private boolean mSandmanScheduled; 206 207 // Table of all suspend blockers. 208 // There should only be a few of these. 209 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 210 211 // Table of all wake locks acquired by applications. 212 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 213 214 // A bitfield that summarizes the state of all active wakelocks. 215 private int mWakeLockSummary; 216 217 // True if the device is in an interactive state. 218 private boolean mInteractive; 219 private boolean mInteractiveChanging; 220 221 // If true, instructs the display controller to wait for the proximity sensor to 222 // go negative before turning the screen on. 223 private boolean mRequestWaitForNegativeProximity; 224 225 // Timestamp of the last time the device was awoken or put to sleep. 226 private long mLastWakeTime; 227 private long mLastSleepTime; 228 229 // Timestamp of the last call to user activity. 230 private long mLastUserActivityTime; 231 private long mLastUserActivityTimeNoChangeLights; 232 233 // A bitfield that summarizes the effect of the user activity timer. 234 // A zero value indicates that the user activity timer has expired. 235 private int mUserActivitySummary; 236 237 // The desired display power state. The actual state may lag behind the 238 // requested because it is updated asynchronously by the display power controller. 239 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 240 241 // True if the display power state has been fully applied, which means the display 242 // is actually on or actually off or whatever was requested. 243 private boolean mDisplayReady; 244 245 // The suspend blocker used to keep the CPU alive when an application has acquired 246 // a wake lock. 247 private final SuspendBlocker mWakeLockSuspendBlocker; 248 249 // True if the wake lock suspend blocker has been acquired. 250 private boolean mHoldingWakeLockSuspendBlocker; 251 252 // The suspend blocker used to keep the CPU alive when the display is on, the 253 // display is getting ready or there is user activity (in which case the display 254 // must be on). 255 private final SuspendBlocker mDisplaySuspendBlocker; 256 257 // True if the display suspend blocker has been acquired. 258 private boolean mHoldingDisplaySuspendBlocker; 259 260 // The screen on blocker used to keep the screen from turning on while the lock 261 // screen is coming up. 262 private final ScreenOnBlockerImpl mScreenOnBlocker; 263 264 // True if systemReady() has been called. 265 private boolean mSystemReady; 266 267 // True if boot completed occurred. We keep the screen on until this happens. 268 private boolean mBootCompleted; 269 270 // True if auto-suspend mode is enabled. 271 // Refer to autosuspend.h. 272 private boolean mHalAutoSuspendModeEnabled; 273 274 // True if interactive mode is enabled. 275 // Refer to power.h. 276 private boolean mHalInteractiveModeEnabled; 277 278 // True if the device is plugged into a power source. 279 private boolean mIsPowered; 280 281 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 282 private int mPlugType; 283 284 // The current battery level percentage. 285 private int mBatteryLevel; 286 287 // The battery level percentage at the time the dream started. 288 // This is used to terminate a dream and go to sleep if the battery is 289 // draining faster than it is charging and the user activity timeout has expired. 290 private int mBatteryLevelWhenDreamStarted; 291 292 // The current dock state. 293 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 294 295 // True to decouple auto-suspend mode from the display state. 296 private boolean mDecoupleHalAutoSuspendModeFromDisplayConfig; 297 298 // True to decouple interactive mode from the display state. 299 private boolean mDecoupleHalInteractiveModeFromDisplayConfig; 300 301 // True if the device should wake up when plugged or unplugged. 302 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 303 304 // True if the device should suspend when the screen is off due to proximity. 305 private boolean mSuspendWhenScreenOffDueToProximityConfig; 306 307 // True if dreams are supported on this device. 308 private boolean mDreamsSupportedConfig; 309 310 // Default value for dreams enabled 311 private boolean mDreamsEnabledByDefaultConfig; 312 313 // Default value for dreams activate-on-sleep 314 private boolean mDreamsActivatedOnSleepByDefaultConfig; 315 316 // Default value for dreams activate-on-dock 317 private boolean mDreamsActivatedOnDockByDefaultConfig; 318 319 // True if dreams can run while not plugged in. 320 private boolean mDreamsEnabledOnBatteryConfig; 321 322 // Minimum battery level to allow dreaming when powered. 323 // Use -1 to disable this safety feature. 324 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 325 326 // Minimum battery level to allow dreaming when not powered. 327 // Use -1 to disable this safety feature. 328 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 329 330 // If the battery level drops by this percentage and the user activity timeout 331 // has expired, then assume the device is receiving insufficient current to charge 332 // effectively and terminate the dream. Use -1 to disable this safety feature. 333 private int mDreamsBatteryLevelDrainCutoffConfig; 334 335 // True if dreams are enabled by the user. 336 private boolean mDreamsEnabledSetting; 337 338 // True if dreams should be activated on sleep. 339 private boolean mDreamsActivateOnSleepSetting; 340 341 // True if dreams should be activated on dock. 342 private boolean mDreamsActivateOnDockSetting; 343 344 // The screen off timeout setting value in milliseconds. 345 private int mScreenOffTimeoutSetting; 346 347 // The maximum allowable screen off timeout according to the device 348 // administration policy. Overrides other settings. 349 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 350 351 // The stay on while plugged in setting. 352 // A bitfield of battery conditions under which to make the screen stay on. 353 private int mStayOnWhilePluggedInSetting; 354 355 // True if the device should stay on. 356 private boolean mStayOn; 357 358 // True if the proximity sensor reads a positive result. 359 private boolean mProximityPositive; 360 361 // Screen brightness setting limits. 362 private int mScreenBrightnessSettingMinimum; 363 private int mScreenBrightnessSettingMaximum; 364 private int mScreenBrightnessSettingDefault; 365 366 // The screen brightness setting, from 0 to 255. 367 // Use -1 if no value has been set. 368 private int mScreenBrightnessSetting; 369 370 // The screen auto-brightness adjustment setting, from -1 to 1. 371 // Use 0 if there is no adjustment. 372 private float mScreenAutoBrightnessAdjustmentSetting; 373 374 // The screen brightness mode. 375 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 376 private int mScreenBrightnessModeSetting; 377 378 // The screen brightness setting override from the window manager 379 // to allow the current foreground activity to override the brightness. 380 // Use -1 to disable. 381 private int mScreenBrightnessOverrideFromWindowManager = -1; 382 383 // The user activity timeout override from the window manager 384 // to allow the current foreground activity to override the user activity timeout. 385 // Use -1 to disable. 386 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 387 388 // The screen brightness setting override from the settings application 389 // to temporarily adjust the brightness until next updated, 390 // Use -1 to disable. 391 private int mTemporaryScreenBrightnessSettingOverride = -1; 392 393 // The screen brightness adjustment setting override from the settings 394 // application to temporarily adjust the auto-brightness adjustment factor 395 // until next updated, in the range -1..1. 396 // Use NaN to disable. 397 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 398 399 // Time when we last logged a warning about calling userActivity() without permission. 400 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 401 402 private native void nativeInit(); 403 404 private static native void nativeAcquireSuspendBlocker(String name); 405 private static native void nativeReleaseSuspendBlocker(String name); 406 private static native void nativeSetInteractive(boolean enable); 407 private static native void nativeSetAutoSuspend(boolean enable); 408 private static native void nativeSendPowerHint(int hintId, int data); 409 410 public PowerManagerService(Context context) { 411 super(context); 412 mContext = context; 413 synchronized (mLock) { 414 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 415 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 416 mDisplaySuspendBlocker.acquire(); 417 mHoldingDisplaySuspendBlocker = true; 418 mHalAutoSuspendModeEnabled = false; 419 mHalInteractiveModeEnabled = true; 420 421 mScreenOnBlocker = new ScreenOnBlockerImpl(); 422 mWakefulness = WAKEFULNESS_AWAKE; 423 mInteractive = true; 424 425 nativeInit(); 426 nativeSetAutoSuspend(false); 427 nativeSetInteractive(true); 428 } 429 } 430 431 @Override 432 public void onStart() { 433 publishBinderService(Context.POWER_SERVICE, new BinderService()); 434 publishLocalService(PowerManagerInternal.class, new LocalService()); 435 } 436 437 /** 438 * Initialize the power manager. 439 * Must be called before any other functions within the power manager are called. 440 */ 441 public void init(LightsManager ls, 442 BatteryService bs, IBatteryStats bss, 443 IAppOpsService appOps) { 444 mLightsManager = ls; 445 mBatteryService = bs; 446 mBatteryStats = bss; 447 mAppOps = appOps; 448 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 449 mHandlerThread = new ServiceThread(TAG, 450 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 451 mHandlerThread.start(); 452 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 453 454 Watchdog.getInstance().addMonitor(this); 455 Watchdog.getInstance().addThread(mHandler); 456 } 457 458 void setPolicy(WindowManagerPolicy policy) { 459 synchronized (mLock) { 460 mPolicy = policy; 461 } 462 } 463 464 public void systemReady() { 465 synchronized (mLock) { 466 mSystemReady = true; 467 mDreamManager = LocalServices.getService(DreamManagerInternal.class); 468 469 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 470 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 471 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 472 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 473 474 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 475 476 // The notifier runs on the system server's main looper so as not to interfere 477 // with the animations and other critical functions of the power manager. 478 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 479 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 480 mScreenOnBlocker, mPolicy); 481 482 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 483 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 484 mHandler); 485 mSettingsObserver = new SettingsObserver(mHandler); 486 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 487 488 // Initialize display power management. 489 mDisplayManagerInternal.initPowerManagement( 490 mDisplayPowerCallbacks, mHandler, sensorManager); 491 492 // Register for broadcasts from other components of the system. 493 IntentFilter filter = new IntentFilter(); 494 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 495 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 496 497 filter = new IntentFilter(); 498 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 499 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 500 501 filter = new IntentFilter(); 502 filter.addAction(Intent.ACTION_DREAMING_STARTED); 503 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 504 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 505 506 filter = new IntentFilter(); 507 filter.addAction(Intent.ACTION_USER_SWITCHED); 508 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 509 510 filter = new IntentFilter(); 511 filter.addAction(Intent.ACTION_DOCK_EVENT); 512 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 513 514 // Register for settings changes. 515 final ContentResolver resolver = mContext.getContentResolver(); 516 resolver.registerContentObserver(Settings.Secure.getUriFor( 517 Settings.Secure.SCREENSAVER_ENABLED), 518 false, mSettingsObserver, UserHandle.USER_ALL); 519 resolver.registerContentObserver(Settings.Secure.getUriFor( 520 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 521 false, mSettingsObserver, UserHandle.USER_ALL); 522 resolver.registerContentObserver(Settings.Secure.getUriFor( 523 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 524 false, mSettingsObserver, UserHandle.USER_ALL); 525 resolver.registerContentObserver(Settings.System.getUriFor( 526 Settings.System.SCREEN_OFF_TIMEOUT), 527 false, mSettingsObserver, UserHandle.USER_ALL); 528 resolver.registerContentObserver(Settings.Global.getUriFor( 529 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 530 false, mSettingsObserver, UserHandle.USER_ALL); 531 resolver.registerContentObserver(Settings.System.getUriFor( 532 Settings.System.SCREEN_BRIGHTNESS), 533 false, mSettingsObserver, UserHandle.USER_ALL); 534 resolver.registerContentObserver(Settings.System.getUriFor( 535 Settings.System.SCREEN_BRIGHTNESS_MODE), 536 false, mSettingsObserver, UserHandle.USER_ALL); 537 resolver.registerContentObserver(Settings.Global.getUriFor( 538 Settings.Global.LOW_POWER_MODE), 539 false, mSettingsObserver, UserHandle.USER_ALL); 540 // Go. 541 readConfigurationLocked(); 542 updateSettingsLocked(); 543 mDirty |= DIRTY_BATTERY_STATE; 544 updatePowerStateLocked(); 545 } 546 } 547 548 private void readConfigurationLocked() { 549 final Resources resources = mContext.getResources(); 550 551 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 552 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 553 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 554 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 555 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 556 com.android.internal.R.bool.config_unplugTurnsOnScreen); 557 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 558 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 559 mDreamsSupportedConfig = resources.getBoolean( 560 com.android.internal.R.bool.config_dreamsSupported); 561 mDreamsEnabledByDefaultConfig = resources.getBoolean( 562 com.android.internal.R.bool.config_dreamsEnabledByDefault); 563 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 564 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 565 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 566 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 567 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 568 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 569 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 570 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 571 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 572 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 573 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 574 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 575 } 576 577 private void updateSettingsLocked() { 578 final ContentResolver resolver = mContext.getContentResolver(); 579 580 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 581 Settings.Secure.SCREENSAVER_ENABLED, 582 mDreamsEnabledByDefaultConfig ? 1 : 0, 583 UserHandle.USER_CURRENT) != 0); 584 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 585 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 586 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 587 UserHandle.USER_CURRENT) != 0); 588 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 589 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 590 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 591 UserHandle.USER_CURRENT) != 0); 592 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 593 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 594 UserHandle.USER_CURRENT); 595 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 596 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 597 598 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 599 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 600 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 601 UserHandle.USER_CURRENT); 602 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 603 mTemporaryScreenBrightnessSettingOverride = -1; 604 } 605 606 final float oldScreenAutoBrightnessAdjustmentSetting = 607 mScreenAutoBrightnessAdjustmentSetting; 608 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 609 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 610 UserHandle.USER_CURRENT); 611 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 612 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 613 } 614 615 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 616 Settings.System.SCREEN_BRIGHTNESS_MODE, 617 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 618 619 boolean mIsEnabled = Settings.Global.getInt(resolver, 620 Settings.Global.LOW_POWER_MODE, 0) != 0; 621 if (mIsEnabled != mLowPowerModeEnabled) { 622 BinderService bs = new BinderService(); 623 bs.powerHint(POWER_HINT_LOW_POWER_MODE, mIsEnabled ? 1 : 0); 624 mLowPowerModeEnabled = mIsEnabled; 625 } 626 627 mDirty |= DIRTY_SETTINGS; 628 } 629 630 private void handleSettingsChangedLocked() { 631 updateSettingsLocked(); 632 updatePowerStateLocked(); 633 } 634 635 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 636 WorkSource ws, String historyTag, int uid, int pid) { 637 synchronized (mLock) { 638 if (DEBUG_SPEW) { 639 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 640 + ", flags=0x" + Integer.toHexString(flags) 641 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 642 } 643 644 WakeLock wakeLock; 645 int index = findWakeLockIndexLocked(lock); 646 if (index >= 0) { 647 wakeLock = mWakeLocks.get(index); 648 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 649 // Update existing wake lock. This shouldn't happen but is harmless. 650 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 651 uid, pid, ws, historyTag); 652 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 653 } 654 } else { 655 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 656 try { 657 lock.linkToDeath(wakeLock, 0); 658 } catch (RemoteException ex) { 659 throw new IllegalArgumentException("Wake lock is already dead."); 660 } 661 notifyWakeLockAcquiredLocked(wakeLock); 662 mWakeLocks.add(wakeLock); 663 } 664 665 applyWakeLockFlagsOnAcquireLocked(wakeLock); 666 mDirty |= DIRTY_WAKE_LOCKS; 667 updatePowerStateLocked(); 668 } 669 } 670 671 @SuppressWarnings("deprecation") 672 private static boolean isScreenLock(final WakeLock wakeLock) { 673 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 674 case PowerManager.FULL_WAKE_LOCK: 675 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 676 case PowerManager.SCREEN_DIM_WAKE_LOCK: 677 return true; 678 } 679 return false; 680 } 681 682 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 683 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 684 && isScreenLock(wakeLock)) { 685 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 686 } 687 } 688 689 private void releaseWakeLockInternal(IBinder lock, int flags) { 690 synchronized (mLock) { 691 int index = findWakeLockIndexLocked(lock); 692 if (index < 0) { 693 if (DEBUG_SPEW) { 694 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 695 + " [not found], flags=0x" + Integer.toHexString(flags)); 696 } 697 return; 698 } 699 700 WakeLock wakeLock = mWakeLocks.get(index); 701 if (DEBUG_SPEW) { 702 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 703 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 704 } 705 706 mWakeLocks.remove(index); 707 notifyWakeLockReleasedLocked(wakeLock); 708 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 709 710 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 711 mRequestWaitForNegativeProximity = true; 712 } 713 714 applyWakeLockFlagsOnReleaseLocked(wakeLock); 715 mDirty |= DIRTY_WAKE_LOCKS; 716 updatePowerStateLocked(); 717 } 718 } 719 720 private void handleWakeLockDeath(WakeLock wakeLock) { 721 synchronized (mLock) { 722 if (DEBUG_SPEW) { 723 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 724 + " [" + wakeLock.mTag + "]"); 725 } 726 727 int index = mWakeLocks.indexOf(wakeLock); 728 if (index < 0) { 729 return; 730 } 731 732 mWakeLocks.remove(index); 733 notifyWakeLockReleasedLocked(wakeLock); 734 735 applyWakeLockFlagsOnReleaseLocked(wakeLock); 736 mDirty |= DIRTY_WAKE_LOCKS; 737 updatePowerStateLocked(); 738 } 739 } 740 741 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 742 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 743 && isScreenLock(wakeLock)) { 744 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 745 PowerManager.USER_ACTIVITY_EVENT_OTHER, 746 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 747 wakeLock.mOwnerUid); 748 } 749 } 750 751 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag) { 752 synchronized (mLock) { 753 int index = findWakeLockIndexLocked(lock); 754 if (index < 0) { 755 if (DEBUG_SPEW) { 756 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 757 + " [not found], ws=" + ws); 758 } 759 throw new IllegalArgumentException("Wake lock not active"); 760 } 761 762 WakeLock wakeLock = mWakeLocks.get(index); 763 if (DEBUG_SPEW) { 764 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 765 + " [" + wakeLock.mTag + "], ws=" + ws); 766 } 767 768 if (!wakeLock.hasSameWorkSource(ws)) { 769 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 770 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 771 ws, historyTag); 772 wakeLock.mHistoryTag = historyTag; 773 wakeLock.updateWorkSource(ws); 774 } 775 } 776 } 777 778 private int findWakeLockIndexLocked(IBinder lock) { 779 final int count = mWakeLocks.size(); 780 for (int i = 0; i < count; i++) { 781 if (mWakeLocks.get(i).mLock == lock) { 782 return i; 783 } 784 } 785 return -1; 786 } 787 788 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 789 if (mSystemReady) { 790 wakeLock.mNotifiedAcquired = true; 791 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 792 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 793 wakeLock.mHistoryTag); 794 } 795 } 796 797 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 798 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 799 if (mSystemReady && wakeLock.mNotifiedAcquired) { 800 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 801 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 802 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 803 } 804 } 805 806 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 807 if (mSystemReady && wakeLock.mNotifiedAcquired) { 808 wakeLock.mNotifiedAcquired = false; 809 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 810 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 811 } 812 } 813 814 @SuppressWarnings("deprecation") 815 private boolean isWakeLockLevelSupportedInternal(int level) { 816 synchronized (mLock) { 817 switch (level) { 818 case PowerManager.PARTIAL_WAKE_LOCK: 819 case PowerManager.SCREEN_DIM_WAKE_LOCK: 820 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 821 case PowerManager.FULL_WAKE_LOCK: 822 case PowerManager.DOZE_WAKE_LOCK: 823 return true; 824 825 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 826 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 827 828 default: 829 return false; 830 } 831 } 832 } 833 834 // Called from native code. 835 private void userActivityFromNative(long eventTime, int event, int flags) { 836 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 837 } 838 839 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 840 synchronized (mLock) { 841 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 842 updatePowerStateLocked(); 843 } 844 } 845 } 846 847 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 848 if (DEBUG_SPEW) { 849 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 850 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 851 + ", uid=" + uid); 852 } 853 854 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 855 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 856 || !mBootCompleted || !mSystemReady) { 857 return false; 858 } 859 860 mNotifier.onUserActivity(event, uid); 861 862 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 863 if (eventTime > mLastUserActivityTimeNoChangeLights 864 && eventTime > mLastUserActivityTime) { 865 mLastUserActivityTimeNoChangeLights = eventTime; 866 mDirty |= DIRTY_USER_ACTIVITY; 867 return true; 868 } 869 } else { 870 if (eventTime > mLastUserActivityTime) { 871 mLastUserActivityTime = eventTime; 872 mDirty |= DIRTY_USER_ACTIVITY; 873 return true; 874 } 875 } 876 return false; 877 } 878 879 private void wakeUpInternal(long eventTime) { 880 synchronized (mLock) { 881 if (wakeUpNoUpdateLocked(eventTime)) { 882 updatePowerStateLocked(); 883 } 884 } 885 } 886 887 private boolean wakeUpNoUpdateLocked(long eventTime) { 888 if (DEBUG_SPEW) { 889 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 890 } 891 892 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 893 || !mBootCompleted || !mSystemReady) { 894 return false; 895 } 896 897 switch (mWakefulness) { 898 case WAKEFULNESS_ASLEEP: 899 Slog.i(TAG, "Waking up from sleep..."); 900 break; 901 case WAKEFULNESS_DREAMING: 902 Slog.i(TAG, "Waking up from dream..."); 903 break; 904 case WAKEFULNESS_DOZING: 905 Slog.i(TAG, "Waking up from dozing..."); 906 break; 907 } 908 909 mLastWakeTime = eventTime; 910 mDirty |= DIRTY_WAKEFULNESS; 911 mWakefulness = WAKEFULNESS_AWAKE; 912 setInteractiveStateLocked(true, 0); 913 914 userActivityNoUpdateLocked( 915 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 916 return true; 917 } 918 919 private void goToSleepInternal(long eventTime, int reason) { 920 synchronized (mLock) { 921 if (goToSleepNoUpdateLocked(eventTime, reason)) { 922 updatePowerStateLocked(); 923 } 924 } 925 } 926 927 // This method is called goToSleep for historical reasons but we actually start 928 // dozing before really going to sleep. 929 @SuppressWarnings("deprecation") 930 private boolean goToSleepNoUpdateLocked(long eventTime, int reason) { 931 if (DEBUG_SPEW) { 932 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime + ", reason=" + reason); 933 } 934 935 if (eventTime < mLastWakeTime 936 || mWakefulness == WAKEFULNESS_ASLEEP 937 || mWakefulness == WAKEFULNESS_DOZING 938 || !mBootCompleted || !mSystemReady) { 939 return false; 940 } 941 942 switch (reason) { 943 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 944 Slog.i(TAG, "Going to sleep due to device administration policy..."); 945 break; 946 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 947 Slog.i(TAG, "Going to sleep due to screen timeout..."); 948 break; 949 default: 950 Slog.i(TAG, "Going to sleep by user request..."); 951 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 952 break; 953 } 954 955 mLastSleepTime = eventTime; 956 mDirty |= DIRTY_WAKEFULNESS; 957 mWakefulness = WAKEFULNESS_DOZING; 958 mSandmanSummoned = true; 959 setInteractiveStateLocked(false, reason); 960 961 // Report the number of wake locks that will be cleared by going to sleep. 962 int numWakeLocksCleared = 0; 963 final int numWakeLocks = mWakeLocks.size(); 964 for (int i = 0; i < numWakeLocks; i++) { 965 final WakeLock wakeLock = mWakeLocks.get(i); 966 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 967 case PowerManager.FULL_WAKE_LOCK: 968 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 969 case PowerManager.SCREEN_DIM_WAKE_LOCK: 970 numWakeLocksCleared += 1; 971 break; 972 } 973 } 974 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 975 return true; 976 } 977 978 private void napInternal(long eventTime) { 979 synchronized (mLock) { 980 if (napNoUpdateLocked(eventTime)) { 981 updatePowerStateLocked(); 982 } 983 } 984 } 985 986 private boolean napNoUpdateLocked(long eventTime) { 987 if (DEBUG_SPEW) { 988 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 989 } 990 991 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 992 || !mBootCompleted || !mSystemReady) { 993 return false; 994 } 995 996 Slog.i(TAG, "Nap time..."); 997 998 mDirty |= DIRTY_WAKEFULNESS; 999 mWakefulness = WAKEFULNESS_DREAMING; 1000 mSandmanSummoned = true; 1001 setInteractiveStateLocked(true, 0); 1002 return true; 1003 } 1004 1005 // Done dozing, drop everything and go to sleep. 1006 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 1007 if (DEBUG_SPEW) { 1008 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 1009 } 1010 1011 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1012 || !mBootCompleted || !mSystemReady) { 1013 return false; 1014 } 1015 1016 Slog.i(TAG, "Sleeping..."); 1017 1018 mDirty |= DIRTY_WAKEFULNESS; 1019 mWakefulness = WAKEFULNESS_ASLEEP; 1020 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1021 return true; 1022 } 1023 1024 private void setInteractiveStateLocked(boolean interactive, int reason) { 1025 if (mInteractive != interactive) { 1026 finishInteractiveStateChangeLocked(); 1027 1028 mInteractive = interactive; 1029 mInteractiveChanging = true; 1030 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1031 } 1032 } 1033 1034 private void finishInteractiveStateChangeLocked() { 1035 if (mInteractiveChanging) { 1036 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1037 mInteractiveChanging = false; 1038 } 1039 } 1040 1041 /** 1042 * Updates the global power state based on dirty bits recorded in mDirty. 1043 * 1044 * This is the main function that performs power state transitions. 1045 * We centralize them here so that we can recompute the power state completely 1046 * each time something important changes, and ensure that we do it the same 1047 * way each time. The point is to gather all of the transition logic here. 1048 */ 1049 private void updatePowerStateLocked() { 1050 if (!mSystemReady || mDirty == 0) { 1051 return; 1052 } 1053 if (!Thread.holdsLock(mLock)) { 1054 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1055 } 1056 1057 // Phase 0: Basic state updates. 1058 updateIsPoweredLocked(mDirty); 1059 updateStayOnLocked(mDirty); 1060 1061 // Phase 1: Update wakefulness. 1062 // Loop because the wake lock and user activity computations are influenced 1063 // by changes in wakefulness. 1064 final long now = SystemClock.uptimeMillis(); 1065 int dirtyPhase2 = 0; 1066 for (;;) { 1067 int dirtyPhase1 = mDirty; 1068 dirtyPhase2 |= dirtyPhase1; 1069 mDirty = 0; 1070 1071 updateWakeLockSummaryLocked(dirtyPhase1); 1072 updateUserActivitySummaryLocked(now, dirtyPhase1); 1073 if (!updateWakefulnessLocked(dirtyPhase1)) { 1074 break; 1075 } 1076 } 1077 1078 // Phase 2: Update dreams and display power state. 1079 updateDreamLocked(dirtyPhase2); 1080 updateDisplayPowerStateLocked(dirtyPhase2); 1081 1082 // Phase 3: Send notifications, if needed. 1083 if (mDisplayReady) { 1084 finishInteractiveStateChangeLocked(); 1085 } 1086 1087 // Phase 4: Update suspend blocker. 1088 // Because we might release the last suspend blocker here, we need to make sure 1089 // we finished everything else first! 1090 updateSuspendBlockerLocked(); 1091 } 1092 1093 /** 1094 * Updates the value of mIsPowered. 1095 * Sets DIRTY_IS_POWERED if a change occurred. 1096 */ 1097 private void updateIsPoweredLocked(int dirty) { 1098 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1099 final boolean wasPowered = mIsPowered; 1100 final int oldPlugType = mPlugType; 1101 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1102 mPlugType = mBatteryService.getPlugType(); 1103 mBatteryLevel = mBatteryService.getBatteryLevel(); 1104 1105 if (DEBUG_SPEW) { 1106 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1107 + ", mIsPowered=" + mIsPowered 1108 + ", oldPlugType=" + oldPlugType 1109 + ", mPlugType=" + mPlugType 1110 + ", mBatteryLevel=" + mBatteryLevel); 1111 } 1112 1113 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1114 mDirty |= DIRTY_IS_POWERED; 1115 1116 // Update wireless dock detection state. 1117 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1118 mIsPowered, mPlugType, mBatteryLevel); 1119 1120 // Treat plugging and unplugging the devices as a user activity. 1121 // Users find it disconcerting when they plug or unplug the device 1122 // and it shuts off right away. 1123 // Some devices also wake the device when plugged or unplugged because 1124 // they don't have a charging LED. 1125 final long now = SystemClock.uptimeMillis(); 1126 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1127 dockedOnWirelessCharger)) { 1128 wakeUpNoUpdateLocked(now); 1129 } 1130 userActivityNoUpdateLocked( 1131 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1132 1133 // Tell the notifier whether wireless charging has started so that 1134 // it can provide feedback to the user. 1135 if (dockedOnWirelessCharger) { 1136 mNotifier.onWirelessChargingStarted(); 1137 } 1138 } 1139 } 1140 } 1141 1142 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1143 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1144 // Don't wake when powered unless configured to do so. 1145 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1146 return false; 1147 } 1148 1149 // Don't wake when undocked from wireless charger. 1150 // See WirelessChargerDetector for justification. 1151 if (wasPowered && !mIsPowered 1152 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1153 return false; 1154 } 1155 1156 // Don't wake when docked on wireless charger unless we are certain of it. 1157 // See WirelessChargerDetector for justification. 1158 if (!wasPowered && mIsPowered 1159 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1160 && !dockedOnWirelessCharger) { 1161 return false; 1162 } 1163 1164 // If already dreaming and becoming powered, then don't wake. 1165 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1166 return false; 1167 } 1168 1169 // Otherwise wake up! 1170 return true; 1171 } 1172 1173 /** 1174 * Updates the value of mStayOn. 1175 * Sets DIRTY_STAY_ON if a change occurred. 1176 */ 1177 private void updateStayOnLocked(int dirty) { 1178 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1179 final boolean wasStayOn = mStayOn; 1180 if (mStayOnWhilePluggedInSetting != 0 1181 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1182 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1183 } else { 1184 mStayOn = false; 1185 } 1186 1187 if (mStayOn != wasStayOn) { 1188 mDirty |= DIRTY_STAY_ON; 1189 } 1190 } 1191 } 1192 1193 /** 1194 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1195 * Note that most wake-locks are ignored when the system is asleep. 1196 * 1197 * This function must have no other side-effects. 1198 */ 1199 @SuppressWarnings("deprecation") 1200 private void updateWakeLockSummaryLocked(int dirty) { 1201 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1202 mWakeLockSummary = 0; 1203 1204 final int numWakeLocks = mWakeLocks.size(); 1205 for (int i = 0; i < numWakeLocks; i++) { 1206 final WakeLock wakeLock = mWakeLocks.get(i); 1207 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1208 case PowerManager.PARTIAL_WAKE_LOCK: 1209 mWakeLockSummary |= WAKE_LOCK_CPU; 1210 break; 1211 case PowerManager.FULL_WAKE_LOCK: 1212 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1213 break; 1214 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1215 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1216 break; 1217 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1218 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1219 break; 1220 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1221 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1222 break; 1223 case PowerManager.DOZE_WAKE_LOCK: 1224 mWakeLockSummary |= WAKE_LOCK_DOZE; 1225 break; 1226 } 1227 } 1228 1229 // Cancel wake locks that make no sense based on the current state. 1230 if (mWakefulness != WAKEFULNESS_DOZING) { 1231 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1232 } 1233 if (mWakefulness == WAKEFULNESS_ASLEEP 1234 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1235 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1236 | WAKE_LOCK_BUTTON_BRIGHT); 1237 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1238 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1239 } 1240 } 1241 1242 // Infer implied wake locks where necessary based on the current state. 1243 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1244 if (mWakefulness == WAKEFULNESS_AWAKE) { 1245 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1246 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1247 mWakeLockSummary |= WAKE_LOCK_CPU; 1248 } 1249 } 1250 1251 if (DEBUG_SPEW) { 1252 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1253 + wakefulnessToString(mWakefulness) 1254 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1255 } 1256 } 1257 } 1258 1259 /** 1260 * Updates the value of mUserActivitySummary to summarize the user requested 1261 * state of the system such as whether the screen should be bright or dim. 1262 * Note that user activity is ignored when the system is asleep. 1263 * 1264 * This function must have no other side-effects. 1265 */ 1266 private void updateUserActivitySummaryLocked(long now, int dirty) { 1267 // Update the status of the user activity timeout timer. 1268 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1269 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1270 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1271 1272 long nextTimeout = 0; 1273 if (mWakefulness == WAKEFULNESS_AWAKE 1274 || mWakefulness == WAKEFULNESS_DREAMING 1275 || mWakefulness == WAKEFULNESS_DOZING) { 1276 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1277 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1278 1279 mUserActivitySummary = 0; 1280 if (mLastUserActivityTime >= mLastWakeTime) { 1281 nextTimeout = mLastUserActivityTime 1282 + screenOffTimeout - screenDimDuration; 1283 if (now < nextTimeout) { 1284 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1285 } else { 1286 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1287 if (now < nextTimeout) { 1288 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1289 } 1290 } 1291 } 1292 if (mUserActivitySummary == 0 1293 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1294 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1295 if (now < nextTimeout 1296 && mDisplayPowerRequest.wantScreenOnNormal()) { 1297 mUserActivitySummary = mDisplayPowerRequest.screenState 1298 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1299 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1300 } 1301 } 1302 if (mUserActivitySummary != 0) { 1303 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1304 msg.setAsynchronous(true); 1305 mHandler.sendMessageAtTime(msg, nextTimeout); 1306 } 1307 } else { 1308 mUserActivitySummary = 0; 1309 } 1310 1311 if (DEBUG_SPEW) { 1312 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1313 + wakefulnessToString(mWakefulness) 1314 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1315 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1316 } 1317 } 1318 } 1319 1320 /** 1321 * Called when a user activity timeout has occurred. 1322 * Simply indicates that something about user activity has changed so that the new 1323 * state can be recomputed when the power state is updated. 1324 * 1325 * This function must have no other side-effects besides setting the dirty 1326 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1327 */ 1328 private void handleUserActivityTimeout() { // runs on handler thread 1329 synchronized (mLock) { 1330 if (DEBUG_SPEW) { 1331 Slog.d(TAG, "handleUserActivityTimeout"); 1332 } 1333 1334 mDirty |= DIRTY_USER_ACTIVITY; 1335 updatePowerStateLocked(); 1336 } 1337 } 1338 1339 private int getScreenOffTimeoutLocked() { 1340 int timeout = mScreenOffTimeoutSetting; 1341 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1342 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1343 } 1344 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1345 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1346 } 1347 return Math.max(timeout, MINIMUM_SCREEN_OFF_TIMEOUT); 1348 } 1349 1350 private int getScreenDimDurationLocked(int screenOffTimeout) { 1351 return Math.min(SCREEN_DIM_DURATION, 1352 (int)(screenOffTimeout * MAXIMUM_SCREEN_DIM_RATIO)); 1353 } 1354 1355 /** 1356 * Updates the wakefulness of the device. 1357 * 1358 * This is the function that decides whether the device should start dreaming 1359 * based on the current wake locks and user activity state. It may modify mDirty 1360 * if the wakefulness changes. 1361 * 1362 * Returns true if the wakefulness changed and we need to restart power state calculation. 1363 */ 1364 private boolean updateWakefulnessLocked(int dirty) { 1365 boolean changed = false; 1366 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1367 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1368 | DIRTY_DOCK_STATE)) != 0) { 1369 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1370 if (DEBUG_SPEW) { 1371 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1372 } 1373 final long time = SystemClock.uptimeMillis(); 1374 if (shouldNapAtBedTimeLocked()) { 1375 changed = napNoUpdateLocked(time); 1376 } else { 1377 changed = goToSleepNoUpdateLocked(time, 1378 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1379 } 1380 } 1381 } 1382 return changed; 1383 } 1384 1385 /** 1386 * Returns true if the device should automatically nap and start dreaming when the user 1387 * activity timeout has expired and it's bedtime. 1388 */ 1389 private boolean shouldNapAtBedTimeLocked() { 1390 return mDreamsActivateOnSleepSetting 1391 || (mDreamsActivateOnDockSetting 1392 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1393 } 1394 1395 /** 1396 * Returns true if the device should go to sleep now. 1397 * Also used when exiting a dream to determine whether we should go back 1398 * to being fully awake or else go to sleep for good. 1399 */ 1400 private boolean isItBedTimeYetLocked() { 1401 return mBootCompleted && !isBeingKeptAwakeLocked(); 1402 } 1403 1404 /** 1405 * Returns true if the device is being kept awake by a wake lock, user activity 1406 * or the stay on while powered setting. We also keep the phone awake when 1407 * the proximity sensor returns a positive result so that the device does not 1408 * lock while in a phone call. This function only controls whether the device 1409 * will go to sleep or dream which is independent of whether it will be allowed 1410 * to suspend. 1411 */ 1412 private boolean isBeingKeptAwakeLocked() { 1413 return mStayOn 1414 || mProximityPositive 1415 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1416 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1417 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1418 } 1419 1420 /** 1421 * Determines whether to post a message to the sandman to update the dream state. 1422 */ 1423 private void updateDreamLocked(int dirty) { 1424 if ((dirty & (DIRTY_WAKEFULNESS 1425 | DIRTY_USER_ACTIVITY 1426 | DIRTY_WAKE_LOCKS 1427 | DIRTY_BOOT_COMPLETED 1428 | DIRTY_SETTINGS 1429 | DIRTY_IS_POWERED 1430 | DIRTY_STAY_ON 1431 | DIRTY_PROXIMITY_POSITIVE 1432 | DIRTY_BATTERY_STATE)) != 0) { 1433 scheduleSandmanLocked(); 1434 } 1435 } 1436 1437 private void scheduleSandmanLocked() { 1438 if (!mSandmanScheduled) { 1439 mSandmanScheduled = true; 1440 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1441 msg.setAsynchronous(true); 1442 mHandler.sendMessage(msg); 1443 } 1444 } 1445 1446 /** 1447 * Called when the device enters or exits a dreaming or dozing state. 1448 * 1449 * We do this asynchronously because we must call out of the power manager to start 1450 * the dream and we don't want to hold our lock while doing so. There is a risk that 1451 * the device will wake or go to sleep in the meantime so we have to handle that case. 1452 */ 1453 private void handleSandman() { // runs on handler thread 1454 // Handle preconditions. 1455 final boolean startDreaming; 1456 final int wakefulness; 1457 synchronized (mLock) { 1458 mSandmanScheduled = false; 1459 wakefulness = mWakefulness; 1460 if (mSandmanSummoned) { 1461 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1462 || wakefulness == WAKEFULNESS_DOZING); 1463 mSandmanSummoned = false; 1464 } else { 1465 startDreaming = false; 1466 } 1467 } 1468 1469 // Start dreaming if needed. 1470 // We only control the dream on the handler thread, so we don't need to worry about 1471 // concurrent attempts to start or stop the dream. 1472 final boolean isDreaming; 1473 if (mDreamManager != null) { 1474 // Restart the dream whenever the sandman is summoned. 1475 if (startDreaming) { 1476 mDreamManager.stopDream(); 1477 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1478 } 1479 isDreaming = mDreamManager.isDreaming(); 1480 } else { 1481 isDreaming = false; 1482 } 1483 1484 // Update dream state. 1485 synchronized (mLock) { 1486 // Remember the initial battery level when the dream started. 1487 if (startDreaming && isDreaming) { 1488 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1489 if (wakefulness == WAKEFULNESS_DOZING) { 1490 Slog.i(TAG, "Dozing..."); 1491 } else { 1492 Slog.i(TAG, "Dreaming..."); 1493 } 1494 } 1495 1496 // If preconditions changed, wait for the next iteration to determine 1497 // whether the dream should continue (or be restarted). 1498 if (mSandmanSummoned || mWakefulness != wakefulness) { 1499 return; // wait for next cycle 1500 } 1501 1502 // Determine whether the dream should continue. 1503 if (wakefulness == WAKEFULNESS_DREAMING) { 1504 if (isDreaming && canDreamLocked()) { 1505 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1506 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1507 - mDreamsBatteryLevelDrainCutoffConfig 1508 && !isBeingKeptAwakeLocked()) { 1509 // If the user activity timeout expired and the battery appears 1510 // to be draining faster than it is charging then stop dreaming 1511 // and go to sleep. 1512 Slog.i(TAG, "Stopping dream because the battery appears to " 1513 + "be draining faster than it is charging. " 1514 + "Battery level when dream started: " 1515 + mBatteryLevelWhenDreamStarted + "%. " 1516 + "Battery level now: " + mBatteryLevel + "%."); 1517 } else { 1518 return; // continue dreaming 1519 } 1520 } 1521 1522 // Dream has ended or will be stopped. Update the power state. 1523 if (isItBedTimeYetLocked()) { 1524 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1525 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1526 updatePowerStateLocked(); 1527 } else { 1528 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1529 updatePowerStateLocked(); 1530 } 1531 } else if (wakefulness == WAKEFULNESS_DOZING) { 1532 if (isDreaming) { 1533 return; // continue dozing 1534 } 1535 1536 // Doze has ended or will be stopped. Update the power state. 1537 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1538 updatePowerStateLocked(); 1539 } 1540 } 1541 1542 // Stop dream. 1543 if (isDreaming) { 1544 mDreamManager.stopDream(); 1545 } 1546 } 1547 1548 /** 1549 * Returns true if the device is allowed to dream in its current state. 1550 * This function is not called when dozing. 1551 */ 1552 private boolean canDreamLocked() { 1553 if (mWakefulness != WAKEFULNESS_DREAMING 1554 || !mDreamsSupportedConfig 1555 || !mDreamsEnabledSetting 1556 || !mDisplayPowerRequest.wantScreenOnNormal() 1557 || !mBootCompleted) { 1558 return false; 1559 } 1560 if (!isBeingKeptAwakeLocked()) { 1561 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1562 return false; 1563 } 1564 if (!mIsPowered 1565 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1566 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1567 return false; 1568 } 1569 if (mIsPowered 1570 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1571 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1572 return false; 1573 } 1574 } 1575 return true; 1576 } 1577 1578 private void handleScreenOnBlockerReleased() { 1579 synchronized (mLock) { 1580 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1581 updatePowerStateLocked(); 1582 } 1583 } 1584 1585 /** 1586 * Updates the display power state asynchronously. 1587 * When the update is finished, mDisplayReady will be set to true. The display 1588 * controller posts a message to tell us when the actual display power state 1589 * has been updated so we come back here to double-check and finish up. 1590 * 1591 * This function recalculates the display power state each time. 1592 */ 1593 private void updateDisplayPowerStateLocked(int dirty) { 1594 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1595 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1596 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1597 final int newScreenState = getDesiredScreenPowerStateLocked(); 1598 mDisplayPowerRequest.screenState = newScreenState; 1599 1600 int screenBrightness = mScreenBrightnessSettingDefault; 1601 float screenAutoBrightnessAdjustment = 0.0f; 1602 boolean autoBrightness = (mScreenBrightnessModeSetting == 1603 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1604 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1605 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1606 autoBrightness = false; 1607 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1608 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1609 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1610 screenBrightness = mScreenBrightnessSetting; 1611 } 1612 if (autoBrightness) { 1613 screenBrightness = mScreenBrightnessSettingDefault; 1614 if (isValidAutoBrightnessAdjustment( 1615 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1616 screenAutoBrightnessAdjustment = 1617 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1618 } else if (isValidAutoBrightnessAdjustment( 1619 mScreenAutoBrightnessAdjustmentSetting)) { 1620 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1621 } 1622 } 1623 screenBrightness = Math.max(Math.min(screenBrightness, 1624 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1625 screenAutoBrightnessAdjustment = Math.max(Math.min( 1626 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1627 mDisplayPowerRequest.screenBrightness = screenBrightness; 1628 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1629 screenAutoBrightnessAdjustment; 1630 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1631 1632 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1633 1634 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1635 1636 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1637 mRequestWaitForNegativeProximity); 1638 mRequestWaitForNegativeProximity = false; 1639 1640 if (DEBUG_SPEW) { 1641 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1642 + ", newScreenState=" + newScreenState 1643 + ", mWakefulness=" + mWakefulness 1644 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1645 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1646 + ", mBootCompleted=" + mBootCompleted); 1647 } 1648 } 1649 } 1650 1651 private static boolean isValidBrightness(int value) { 1652 return value >= 0 && value <= 255; 1653 } 1654 1655 private static boolean isValidAutoBrightnessAdjustment(float value) { 1656 // Handles NaN by always returning false. 1657 return value >= -1.0f && value <= 1.0f; 1658 } 1659 1660 private int getDesiredScreenPowerStateLocked() { 1661 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1662 return DisplayPowerRequest.SCREEN_STATE_OFF; 1663 } 1664 1665 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1666 return DisplayPowerRequest.SCREEN_STATE_DOZE; 1667 } 1668 1669 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1670 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1671 || !mBootCompleted) { 1672 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1673 } 1674 1675 return DisplayPowerRequest.SCREEN_STATE_DIM; 1676 } 1677 1678 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1679 new DisplayManagerInternal.DisplayPowerCallbacks() { 1680 private int mDisplayState = Display.STATE_UNKNOWN; 1681 1682 @Override 1683 public void onStateChanged() { 1684 synchronized (mLock) { 1685 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1686 updatePowerStateLocked(); 1687 } 1688 } 1689 1690 @Override 1691 public void onProximityPositive() { 1692 synchronized (mLock) { 1693 mProximityPositive = true; 1694 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1695 updatePowerStateLocked(); 1696 } 1697 } 1698 1699 @Override 1700 public void onProximityNegative() { 1701 synchronized (mLock) { 1702 mProximityPositive = false; 1703 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1704 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1705 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1706 updatePowerStateLocked(); 1707 } 1708 } 1709 1710 @Override 1711 public void onDisplayStateChange(int state) { 1712 // This method is only needed to support legacy display blanking behavior 1713 // where the display's power state is coupled to suspend or to the power HAL. 1714 // The order of operations matters here. 1715 synchronized (mLock) { 1716 if (mDisplayState != state) { 1717 mDisplayState = state; 1718 if (state == Display.STATE_OFF) { 1719 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1720 setHalInteractiveModeLocked(false); 1721 } 1722 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1723 setHalAutoSuspendModeLocked(true); 1724 } 1725 } else { 1726 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1727 setHalAutoSuspendModeLocked(false); 1728 } 1729 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1730 setHalInteractiveModeLocked(true); 1731 } 1732 } 1733 } 1734 } 1735 } 1736 1737 @Override 1738 public void acquireSuspendBlocker() { 1739 mDisplaySuspendBlocker.acquire(); 1740 } 1741 1742 @Override 1743 public void releaseSuspendBlocker() { 1744 mDisplaySuspendBlocker.release(); 1745 } 1746 1747 @Override 1748 public String toString() { 1749 synchronized (this) { 1750 return "state=" + Display.stateToString(mDisplayState); 1751 } 1752 } 1753 }; 1754 1755 private boolean shouldUseProximitySensorLocked() { 1756 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1757 } 1758 1759 /** 1760 * Updates the suspend blocker that keeps the CPU alive. 1761 * 1762 * This function must have no other side-effects. 1763 */ 1764 private void updateSuspendBlockerLocked() { 1765 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1766 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1767 final boolean autoSuspend = !needDisplaySuspendBlocker; 1768 1769 // Disable auto-suspend if needed. 1770 if (!autoSuspend) { 1771 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1772 setHalAutoSuspendModeLocked(false); 1773 } 1774 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1775 setHalInteractiveModeLocked(true); 1776 } 1777 } 1778 1779 // First acquire suspend blockers if needed. 1780 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1781 mWakeLockSuspendBlocker.acquire(); 1782 mHoldingWakeLockSuspendBlocker = true; 1783 } 1784 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1785 mDisplaySuspendBlocker.acquire(); 1786 mHoldingDisplaySuspendBlocker = true; 1787 } 1788 1789 // Then release suspend blockers if needed. 1790 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1791 mWakeLockSuspendBlocker.release(); 1792 mHoldingWakeLockSuspendBlocker = false; 1793 } 1794 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1795 mDisplaySuspendBlocker.release(); 1796 mHoldingDisplaySuspendBlocker = false; 1797 } 1798 1799 // Enable auto-suspend if needed. 1800 if (autoSuspend) { 1801 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1802 setHalInteractiveModeLocked(false); 1803 } 1804 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1805 setHalAutoSuspendModeLocked(true); 1806 } 1807 } 1808 } 1809 1810 /** 1811 * Return true if we must keep a suspend blocker active on behalf of the display. 1812 * We do so if the screen is on or is in transition between states. 1813 */ 1814 private boolean needDisplaySuspendBlockerLocked() { 1815 if (!mDisplayReady) { 1816 return true; 1817 } 1818 if (mDisplayPowerRequest.wantScreenOnNormal()) { 1819 // If we asked for the screen to be on but it is off due to the proximity 1820 // sensor then we may suspend but only if the configuration allows it. 1821 // On some hardware it may not be safe to suspend because the proximity 1822 // sensor may not be correctly configured as a wake-up source. 1823 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1824 || !mSuspendWhenScreenOffDueToProximityConfig) { 1825 return true; 1826 } 1827 } 1828 // Let the system suspend if the screen is off or dozing. 1829 return false; 1830 } 1831 1832 private void setHalAutoSuspendModeLocked(boolean enable) { 1833 if (enable != mHalAutoSuspendModeEnabled) { 1834 if (DEBUG) { 1835 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 1836 } 1837 mHalAutoSuspendModeEnabled = enable; 1838 nativeSetAutoSuspend(enable); 1839 } 1840 } 1841 1842 private void setHalInteractiveModeLocked(boolean enable) { 1843 if (enable != mHalInteractiveModeEnabled) { 1844 if (DEBUG) { 1845 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 1846 } 1847 mHalInteractiveModeEnabled = enable; 1848 nativeSetInteractive(enable); 1849 } 1850 } 1851 1852 private boolean isInteractiveInternal() { 1853 synchronized (mLock) { 1854 return mInteractive; 1855 } 1856 } 1857 1858 private void handleBatteryStateChangedLocked() { 1859 mDirty |= DIRTY_BATTERY_STATE; 1860 updatePowerStateLocked(); 1861 } 1862 1863 private void startWatchingForBootAnimationFinished() { 1864 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1865 } 1866 1867 private void checkIfBootAnimationFinished() { 1868 if (DEBUG) { 1869 Slog.d(TAG, "Check if boot animation finished..."); 1870 } 1871 1872 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1873 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1874 BOOT_ANIMATION_POLL_INTERVAL); 1875 return; 1876 } 1877 1878 synchronized (mLock) { 1879 if (!mBootCompleted) { 1880 Slog.i(TAG, "Boot animation finished."); 1881 handleBootCompletedLocked(); 1882 } 1883 } 1884 } 1885 1886 private void handleBootCompletedLocked() { 1887 final long now = SystemClock.uptimeMillis(); 1888 mBootCompleted = true; 1889 mDirty |= DIRTY_BOOT_COMPLETED; 1890 userActivityNoUpdateLocked( 1891 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1892 updatePowerStateLocked(); 1893 } 1894 1895 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1896 final String reason, boolean wait) { 1897 if (mHandler == null || !mSystemReady) { 1898 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1899 } 1900 1901 Runnable runnable = new Runnable() { 1902 @Override 1903 public void run() { 1904 synchronized (this) { 1905 if (shutdown) { 1906 ShutdownThread.shutdown(mContext, confirm); 1907 } else { 1908 ShutdownThread.reboot(mContext, reason, confirm); 1909 } 1910 } 1911 } 1912 }; 1913 1914 // ShutdownThread must run on a looper capable of displaying the UI. 1915 Message msg = Message.obtain(mHandler, runnable); 1916 msg.setAsynchronous(true); 1917 mHandler.sendMessage(msg); 1918 1919 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 1920 if (wait) { 1921 synchronized (runnable) { 1922 while (true) { 1923 try { 1924 runnable.wait(); 1925 } catch (InterruptedException e) { 1926 } 1927 } 1928 } 1929 } 1930 } 1931 1932 private void crashInternal(final String message) { 1933 Thread t = new Thread("PowerManagerService.crash()") { 1934 @Override 1935 public void run() { 1936 throw new RuntimeException(message); 1937 } 1938 }; 1939 try { 1940 t.start(); 1941 t.join(); 1942 } catch (InterruptedException e) { 1943 Log.wtf(TAG, e); 1944 } 1945 } 1946 1947 private void setStayOnSettingInternal(int val) { 1948 Settings.Global.putInt(mContext.getContentResolver(), 1949 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 1950 } 1951 1952 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 1953 synchronized (mLock) { 1954 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 1955 mDirty |= DIRTY_SETTINGS; 1956 updatePowerStateLocked(); 1957 } 1958 } 1959 1960 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 1961 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 1962 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 1963 } 1964 1965 private void setAttentionLightInternal(boolean on, int color) { 1966 Light light; 1967 synchronized (mLock) { 1968 if (!mSystemReady) { 1969 return; 1970 } 1971 light = mAttentionLight; 1972 } 1973 1974 // Control light outside of lock. 1975 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 1976 } 1977 1978 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 1979 synchronized (mLock) { 1980 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 1981 mScreenBrightnessOverrideFromWindowManager = brightness; 1982 mDirty |= DIRTY_SETTINGS; 1983 updatePowerStateLocked(); 1984 } 1985 } 1986 } 1987 1988 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 1989 synchronized (mLock) { 1990 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 1991 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 1992 mDirty |= DIRTY_SETTINGS; 1993 updatePowerStateLocked(); 1994 } 1995 } 1996 } 1997 1998 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 1999 synchronized (mLock) { 2000 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2001 mTemporaryScreenBrightnessSettingOverride = brightness; 2002 mDirty |= DIRTY_SETTINGS; 2003 updatePowerStateLocked(); 2004 } 2005 } 2006 } 2007 2008 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2009 synchronized (mLock) { 2010 // Note: This condition handles NaN because NaN is not equal to any other 2011 // value, including itself. 2012 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2013 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2014 mDirty |= DIRTY_SETTINGS; 2015 updatePowerStateLocked(); 2016 } 2017 } 2018 } 2019 2020 /** 2021 * Low-level function turn the device off immediately, without trying 2022 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2023 */ 2024 public static void lowLevelShutdown() { 2025 SystemProperties.set("sys.powerctl", "shutdown"); 2026 } 2027 2028 /** 2029 * Low-level function to reboot the device. On success, this 2030 * function doesn't return. If more than 20 seconds passes from 2031 * the time a reboot is requested (120 seconds for reboot to 2032 * recovery), this method returns. 2033 * 2034 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2035 */ 2036 public static void lowLevelReboot(String reason) { 2037 if (reason == null) { 2038 reason = ""; 2039 } 2040 long duration; 2041 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2042 // If we are rebooting to go into recovery, instead of 2043 // setting sys.powerctl directly we'll start the 2044 // pre-recovery service which will do some preparation for 2045 // recovery and then reboot for us. 2046 // 2047 // This preparation can take more than 20 seconds if 2048 // there's a very large update package, so lengthen the 2049 // timeout. 2050 SystemProperties.set("ctl.start", "pre-recovery"); 2051 duration = 120 * 1000L; 2052 } else { 2053 SystemProperties.set("sys.powerctl", "reboot," + reason); 2054 duration = 20 * 1000L; 2055 } 2056 try { 2057 Thread.sleep(duration); 2058 } catch (InterruptedException e) { 2059 Thread.currentThread().interrupt(); 2060 } 2061 } 2062 2063 @Override // Watchdog.Monitor implementation 2064 public void monitor() { 2065 // Grab and release lock for watchdog monitor to detect deadlocks. 2066 synchronized (mLock) { 2067 } 2068 } 2069 2070 private void dumpInternal(PrintWriter pw) { 2071 pw.println("POWER MANAGER (dumpsys power)\n"); 2072 2073 final WirelessChargerDetector wcd; 2074 synchronized (mLock) { 2075 pw.println("Power Manager State:"); 2076 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2077 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2078 pw.println(" mInteractive=" + mInteractive); 2079 pw.println(" mIsPowered=" + mIsPowered); 2080 pw.println(" mPlugType=" + mPlugType); 2081 pw.println(" mBatteryLevel=" + mBatteryLevel); 2082 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2083 pw.println(" mDockState=" + mDockState); 2084 pw.println(" mStayOn=" + mStayOn); 2085 pw.println(" mProximityPositive=" + mProximityPositive); 2086 pw.println(" mBootCompleted=" + mBootCompleted); 2087 pw.println(" mSystemReady=" + mSystemReady); 2088 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2089 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2090 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2091 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2092 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2093 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2094 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2095 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2096 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2097 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2098 pw.println(" mLastUserActivityTimeNoChangeLights=" 2099 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2100 pw.println(" mDisplayReady=" + mDisplayReady); 2101 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2102 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2103 2104 pw.println(); 2105 pw.println("Settings and Configuration:"); 2106 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2107 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2108 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2109 + mDecoupleHalInteractiveModeFromDisplayConfig); 2110 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2111 + mWakeUpWhenPluggedOrUnpluggedConfig); 2112 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2113 + mSuspendWhenScreenOffDueToProximityConfig); 2114 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2115 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2116 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2117 + mDreamsActivatedOnSleepByDefaultConfig); 2118 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2119 + mDreamsActivatedOnDockByDefaultConfig); 2120 pw.println(" mDreamsEnabledOnBatteryConfig=" 2121 + mDreamsEnabledOnBatteryConfig); 2122 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2123 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2124 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2125 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2126 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2127 + mDreamsBatteryLevelDrainCutoffConfig); 2128 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2129 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2130 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2131 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2132 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2133 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2134 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2135 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2136 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2137 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2138 + mScreenAutoBrightnessAdjustmentSetting); 2139 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2140 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2141 + mScreenBrightnessOverrideFromWindowManager); 2142 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2143 + mUserActivityTimeoutOverrideFromWindowManager); 2144 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2145 + mTemporaryScreenBrightnessSettingOverride); 2146 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2147 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2148 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2149 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2150 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2151 2152 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2153 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2154 pw.println(); 2155 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2156 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2157 2158 pw.println(); 2159 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2160 for (WakeLock wl : mWakeLocks) { 2161 pw.println(" " + wl); 2162 } 2163 2164 pw.println(); 2165 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2166 for (SuspendBlocker sb : mSuspendBlockers) { 2167 pw.println(" " + sb); 2168 } 2169 2170 pw.println(); 2171 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2172 2173 pw.println(); 2174 pw.println("Display Power: " + mDisplayPowerCallbacks); 2175 2176 wcd = mWirelessChargerDetector; 2177 } 2178 2179 if (wcd != null) { 2180 wcd.dump(pw); 2181 } 2182 } 2183 2184 private SuspendBlocker createSuspendBlockerLocked(String name) { 2185 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2186 mSuspendBlockers.add(suspendBlocker); 2187 return suspendBlocker; 2188 } 2189 2190 private static String wakefulnessToString(int wakefulness) { 2191 switch (wakefulness) { 2192 case WAKEFULNESS_ASLEEP: 2193 return "Asleep"; 2194 case WAKEFULNESS_AWAKE: 2195 return "Awake"; 2196 case WAKEFULNESS_DREAMING: 2197 return "Dreaming"; 2198 case WAKEFULNESS_DOZING: 2199 return "Dozing"; 2200 default: 2201 return Integer.toString(wakefulness); 2202 } 2203 } 2204 2205 private static WorkSource copyWorkSource(WorkSource workSource) { 2206 return workSource != null ? new WorkSource(workSource) : null; 2207 } 2208 2209 private final class BatteryReceiver extends BroadcastReceiver { 2210 @Override 2211 public void onReceive(Context context, Intent intent) { 2212 synchronized (mLock) { 2213 handleBatteryStateChangedLocked(); 2214 } 2215 } 2216 } 2217 2218 private final class BootCompletedReceiver extends BroadcastReceiver { 2219 @Override 2220 public void onReceive(Context context, Intent intent) { 2221 // This is our early signal that the system thinks it has finished booting. 2222 // However, the boot animation may still be running for a few more seconds 2223 // since it is ultimately in charge of when it terminates. 2224 // Defer transitioning into the boot completed state until the animation exits. 2225 // We do this so that the screen does not start to dim prematurely before 2226 // the user has actually had a chance to interact with the device. 2227 startWatchingForBootAnimationFinished(); 2228 } 2229 } 2230 2231 private final class DreamReceiver extends BroadcastReceiver { 2232 @Override 2233 public void onReceive(Context context, Intent intent) { 2234 synchronized (mLock) { 2235 scheduleSandmanLocked(); 2236 } 2237 } 2238 } 2239 2240 private final class UserSwitchedReceiver extends BroadcastReceiver { 2241 @Override 2242 public void onReceive(Context context, Intent intent) { 2243 synchronized (mLock) { 2244 handleSettingsChangedLocked(); 2245 } 2246 } 2247 } 2248 2249 private final class DockReceiver extends BroadcastReceiver { 2250 @Override 2251 public void onReceive(Context context, Intent intent) { 2252 synchronized (mLock) { 2253 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2254 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2255 if (mDockState != dockState) { 2256 mDockState = dockState; 2257 mDirty |= DIRTY_DOCK_STATE; 2258 updatePowerStateLocked(); 2259 } 2260 } 2261 } 2262 } 2263 2264 private final class SettingsObserver extends ContentObserver { 2265 public SettingsObserver(Handler handler) { 2266 super(handler); 2267 } 2268 2269 @Override 2270 public void onChange(boolean selfChange, Uri uri) { 2271 synchronized (mLock) { 2272 handleSettingsChangedLocked(); 2273 } 2274 } 2275 } 2276 2277 /** 2278 * Handler for asynchronous operations performed by the power manager. 2279 */ 2280 private final class PowerManagerHandler extends Handler { 2281 public PowerManagerHandler(Looper looper) { 2282 super(looper, null, true /*async*/); 2283 } 2284 2285 @Override 2286 public void handleMessage(Message msg) { 2287 switch (msg.what) { 2288 case MSG_USER_ACTIVITY_TIMEOUT: 2289 handleUserActivityTimeout(); 2290 break; 2291 case MSG_SANDMAN: 2292 handleSandman(); 2293 break; 2294 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2295 handleScreenOnBlockerReleased(); 2296 break; 2297 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2298 checkIfBootAnimationFinished(); 2299 break; 2300 } 2301 } 2302 } 2303 2304 /** 2305 * Represents a wake lock that has been acquired by an application. 2306 */ 2307 private final class WakeLock implements IBinder.DeathRecipient { 2308 public final IBinder mLock; 2309 public int mFlags; 2310 public String mTag; 2311 public final String mPackageName; 2312 public WorkSource mWorkSource; 2313 public String mHistoryTag; 2314 public final int mOwnerUid; 2315 public final int mOwnerPid; 2316 public boolean mNotifiedAcquired; 2317 2318 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2319 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2320 mLock = lock; 2321 mFlags = flags; 2322 mTag = tag; 2323 mPackageName = packageName; 2324 mWorkSource = copyWorkSource(workSource); 2325 mHistoryTag = historyTag; 2326 mOwnerUid = ownerUid; 2327 mOwnerPid = ownerPid; 2328 } 2329 2330 @Override 2331 public void binderDied() { 2332 PowerManagerService.this.handleWakeLockDeath(this); 2333 } 2334 2335 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2336 int ownerUid, int ownerPid) { 2337 return mFlags == flags 2338 && mTag.equals(tag) 2339 && hasSameWorkSource(workSource) 2340 && mOwnerUid == ownerUid 2341 && mOwnerPid == ownerPid; 2342 } 2343 2344 public void updateProperties(int flags, String tag, String packageName, 2345 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2346 if (!mPackageName.equals(packageName)) { 2347 throw new IllegalStateException("Existing wake lock package name changed: " 2348 + mPackageName + " to " + packageName); 2349 } 2350 if (mOwnerUid != ownerUid) { 2351 throw new IllegalStateException("Existing wake lock uid changed: " 2352 + mOwnerUid + " to " + ownerUid); 2353 } 2354 if (mOwnerPid != ownerPid) { 2355 throw new IllegalStateException("Existing wake lock pid changed: " 2356 + mOwnerPid + " to " + ownerPid); 2357 } 2358 mFlags = flags; 2359 mTag = tag; 2360 updateWorkSource(workSource); 2361 mHistoryTag = historyTag; 2362 } 2363 2364 public boolean hasSameWorkSource(WorkSource workSource) { 2365 return Objects.equal(mWorkSource, workSource); 2366 } 2367 2368 public void updateWorkSource(WorkSource workSource) { 2369 mWorkSource = copyWorkSource(workSource); 2370 } 2371 2372 @Override 2373 public String toString() { 2374 return getLockLevelString() 2375 + " '" + mTag + "'" + getLockFlagsString() 2376 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2377 } 2378 2379 @SuppressWarnings("deprecation") 2380 private String getLockLevelString() { 2381 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2382 case PowerManager.FULL_WAKE_LOCK: 2383 return "FULL_WAKE_LOCK "; 2384 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2385 return "SCREEN_BRIGHT_WAKE_LOCK "; 2386 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2387 return "SCREEN_DIM_WAKE_LOCK "; 2388 case PowerManager.PARTIAL_WAKE_LOCK: 2389 return "PARTIAL_WAKE_LOCK "; 2390 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2391 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2392 case PowerManager.DOZE_WAKE_LOCK: 2393 return "DOZE_WAKE_LOCK "; 2394 default: 2395 return "??? "; 2396 } 2397 } 2398 2399 private String getLockFlagsString() { 2400 String result = ""; 2401 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2402 result += " ACQUIRE_CAUSES_WAKEUP"; 2403 } 2404 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2405 result += " ON_AFTER_RELEASE"; 2406 } 2407 return result; 2408 } 2409 } 2410 2411 private final class SuspendBlockerImpl implements SuspendBlocker { 2412 private final String mName; 2413 private int mReferenceCount; 2414 2415 public SuspendBlockerImpl(String name) { 2416 mName = name; 2417 } 2418 2419 @Override 2420 protected void finalize() throws Throwable { 2421 try { 2422 if (mReferenceCount != 0) { 2423 Log.wtf(TAG, "Suspend blocker \"" + mName 2424 + "\" was finalized without being released!"); 2425 mReferenceCount = 0; 2426 nativeReleaseSuspendBlocker(mName); 2427 } 2428 } finally { 2429 super.finalize(); 2430 } 2431 } 2432 2433 @Override 2434 public void acquire() { 2435 synchronized (this) { 2436 mReferenceCount += 1; 2437 if (mReferenceCount == 1) { 2438 if (DEBUG_SPEW) { 2439 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2440 } 2441 nativeAcquireSuspendBlocker(mName); 2442 } 2443 } 2444 } 2445 2446 @Override 2447 public void release() { 2448 synchronized (this) { 2449 mReferenceCount -= 1; 2450 if (mReferenceCount == 0) { 2451 if (DEBUG_SPEW) { 2452 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2453 } 2454 nativeReleaseSuspendBlocker(mName); 2455 } else if (mReferenceCount < 0) { 2456 Log.wtf(TAG, "Suspend blocker \"" + mName 2457 + "\" was released without being acquired!", new Throwable()); 2458 mReferenceCount = 0; 2459 } 2460 } 2461 } 2462 2463 @Override 2464 public String toString() { 2465 synchronized (this) { 2466 return mName + ": ref count=" + mReferenceCount; 2467 } 2468 } 2469 } 2470 2471 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2472 private int mNestCount; 2473 2474 public boolean isHeld() { 2475 synchronized (this) { 2476 return mNestCount != 0; 2477 } 2478 } 2479 2480 @Override 2481 public void acquire() { 2482 synchronized (this) { 2483 mNestCount += 1; 2484 if (DEBUG) { 2485 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2486 } 2487 } 2488 } 2489 2490 @Override 2491 public void release() { 2492 synchronized (this) { 2493 mNestCount -= 1; 2494 if (mNestCount < 0) { 2495 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2496 new Throwable()); 2497 mNestCount = 0; 2498 } 2499 if (mNestCount == 0) { 2500 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2501 } 2502 if (DEBUG) { 2503 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2504 } 2505 } 2506 } 2507 2508 @Override 2509 public String toString() { 2510 synchronized (this) { 2511 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2512 } 2513 } 2514 } 2515 2516 private final class BinderService extends IPowerManager.Stub { 2517 @Override // Binder call 2518 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2519 String packageName, int uid) { 2520 if (uid < 0) { 2521 uid = Binder.getCallingUid(); 2522 } 2523 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2524 } 2525 2526 @Override // Binder call 2527 public void powerHint(int hintId, int data) { 2528 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2529 nativeSendPowerHint(hintId, data); 2530 } 2531 2532 @Override // Binder call 2533 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2534 WorkSource ws, String historyTag) { 2535 if (lock == null) { 2536 throw new IllegalArgumentException("lock must not be null"); 2537 } 2538 if (packageName == null) { 2539 throw new IllegalArgumentException("packageName must not be null"); 2540 } 2541 PowerManager.validateWakeLockParameters(flags, tag); 2542 2543 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2544 if (ws != null && ws.size() != 0) { 2545 mContext.enforceCallingOrSelfPermission( 2546 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2547 } else { 2548 ws = null; 2549 } 2550 2551 final int uid = Binder.getCallingUid(); 2552 final int pid = Binder.getCallingPid(); 2553 final long ident = Binder.clearCallingIdentity(); 2554 try { 2555 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2556 } finally { 2557 Binder.restoreCallingIdentity(ident); 2558 } 2559 } 2560 2561 @Override // Binder call 2562 public void releaseWakeLock(IBinder lock, int flags) { 2563 if (lock == null) { 2564 throw new IllegalArgumentException("lock must not be null"); 2565 } 2566 2567 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2568 2569 final long ident = Binder.clearCallingIdentity(); 2570 try { 2571 releaseWakeLockInternal(lock, flags); 2572 } finally { 2573 Binder.restoreCallingIdentity(ident); 2574 } 2575 } 2576 2577 @Override // Binder call 2578 public void updateWakeLockUids(IBinder lock, int[] uids) { 2579 WorkSource ws = null; 2580 2581 if (uids != null) { 2582 ws = new WorkSource(); 2583 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2584 // one at a time? 2585 for (int i = 0; i < uids.length; i++) { 2586 ws.add(uids[i]); 2587 } 2588 } 2589 updateWakeLockWorkSource(lock, ws, null); 2590 } 2591 2592 @Override // Binder call 2593 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2594 if (lock == null) { 2595 throw new IllegalArgumentException("lock must not be null"); 2596 } 2597 2598 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2599 if (ws != null && ws.size() != 0) { 2600 mContext.enforceCallingOrSelfPermission( 2601 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2602 } else { 2603 ws = null; 2604 } 2605 2606 final long ident = Binder.clearCallingIdentity(); 2607 try { 2608 updateWakeLockWorkSourceInternal(lock, ws, historyTag); 2609 } finally { 2610 Binder.restoreCallingIdentity(ident); 2611 } 2612 } 2613 2614 @Override // Binder call 2615 public boolean isWakeLockLevelSupported(int level) { 2616 final long ident = Binder.clearCallingIdentity(); 2617 try { 2618 return isWakeLockLevelSupportedInternal(level); 2619 } finally { 2620 Binder.restoreCallingIdentity(ident); 2621 } 2622 } 2623 2624 @Override // Binder call 2625 public void userActivity(long eventTime, int event, int flags) { 2626 final long now = SystemClock.uptimeMillis(); 2627 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2628 != PackageManager.PERMISSION_GRANTED) { 2629 // Once upon a time applications could call userActivity(). 2630 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2631 // request instead of throwing a SecurityException so we don't break old apps. 2632 synchronized (mLock) { 2633 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2634 mLastWarningAboutUserActivityPermission = now; 2635 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2636 + "caller does not have DEVICE_POWER permission. " 2637 + "Please fix your app! " 2638 + " pid=" + Binder.getCallingPid() 2639 + " uid=" + Binder.getCallingUid()); 2640 } 2641 } 2642 return; 2643 } 2644 2645 if (eventTime > SystemClock.uptimeMillis()) { 2646 throw new IllegalArgumentException("event time must not be in the future"); 2647 } 2648 2649 final int uid = Binder.getCallingUid(); 2650 final long ident = Binder.clearCallingIdentity(); 2651 try { 2652 userActivityInternal(eventTime, event, flags, uid); 2653 } finally { 2654 Binder.restoreCallingIdentity(ident); 2655 } 2656 } 2657 2658 @Override // Binder call 2659 public void wakeUp(long eventTime) { 2660 if (eventTime > SystemClock.uptimeMillis()) { 2661 throw new IllegalArgumentException("event time must not be in the future"); 2662 } 2663 2664 mContext.enforceCallingOrSelfPermission( 2665 android.Manifest.permission.DEVICE_POWER, null); 2666 2667 final long ident = Binder.clearCallingIdentity(); 2668 try { 2669 wakeUpInternal(eventTime); 2670 } finally { 2671 Binder.restoreCallingIdentity(ident); 2672 } 2673 } 2674 2675 @Override // Binder call 2676 public void goToSleep(long eventTime, int reason) { 2677 if (eventTime > SystemClock.uptimeMillis()) { 2678 throw new IllegalArgumentException("event time must not be in the future"); 2679 } 2680 2681 mContext.enforceCallingOrSelfPermission( 2682 android.Manifest.permission.DEVICE_POWER, null); 2683 2684 final long ident = Binder.clearCallingIdentity(); 2685 try { 2686 goToSleepInternal(eventTime, reason); 2687 } finally { 2688 Binder.restoreCallingIdentity(ident); 2689 } 2690 } 2691 2692 @Override // Binder call 2693 public void nap(long eventTime) { 2694 if (eventTime > SystemClock.uptimeMillis()) { 2695 throw new IllegalArgumentException("event time must not be in the future"); 2696 } 2697 2698 mContext.enforceCallingOrSelfPermission( 2699 android.Manifest.permission.DEVICE_POWER, null); 2700 2701 final long ident = Binder.clearCallingIdentity(); 2702 try { 2703 napInternal(eventTime); 2704 } finally { 2705 Binder.restoreCallingIdentity(ident); 2706 } 2707 } 2708 2709 @Override // Binder call 2710 public boolean isInteractive() { 2711 final long ident = Binder.clearCallingIdentity(); 2712 try { 2713 return isInteractiveInternal(); 2714 } finally { 2715 Binder.restoreCallingIdentity(ident); 2716 } 2717 } 2718 2719 /** 2720 * Reboots the device. 2721 * 2722 * @param confirm If true, shows a reboot confirmation dialog. 2723 * @param reason The reason for the reboot, or null if none. 2724 * @param wait If true, this call waits for the reboot to complete and does not return. 2725 */ 2726 @Override // Binder call 2727 public void reboot(boolean confirm, String reason, boolean wait) { 2728 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2729 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2730 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2731 } 2732 2733 final long ident = Binder.clearCallingIdentity(); 2734 try { 2735 shutdownOrRebootInternal(false, confirm, reason, wait); 2736 } finally { 2737 Binder.restoreCallingIdentity(ident); 2738 } 2739 } 2740 2741 /** 2742 * Shuts down the device. 2743 * 2744 * @param confirm If true, shows a shutdown confirmation dialog. 2745 * @param wait If true, this call waits for the shutdown to complete and does not return. 2746 */ 2747 @Override // Binder call 2748 public void shutdown(boolean confirm, boolean wait) { 2749 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2750 2751 final long ident = Binder.clearCallingIdentity(); 2752 try { 2753 shutdownOrRebootInternal(true, confirm, null, wait); 2754 } finally { 2755 Binder.restoreCallingIdentity(ident); 2756 } 2757 } 2758 2759 /** 2760 * Crash the runtime (causing a complete restart of the Android framework). 2761 * Requires REBOOT permission. Mostly for testing. Should not return. 2762 */ 2763 @Override // Binder call 2764 public void crash(String message) { 2765 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2766 2767 final long ident = Binder.clearCallingIdentity(); 2768 try { 2769 crashInternal(message); 2770 } finally { 2771 Binder.restoreCallingIdentity(ident); 2772 } 2773 } 2774 2775 /** 2776 * Set the setting that determines whether the device stays on when plugged in. 2777 * The argument is a bit string, with each bit specifying a power source that, 2778 * when the device is connected to that source, causes the device to stay on. 2779 * See {@link android.os.BatteryManager} for the list of power sources that 2780 * can be specified. Current values include 2781 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2782 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2783 * 2784 * Used by "adb shell svc power stayon ..." 2785 * 2786 * @param val an {@code int} containing the bits that specify which power sources 2787 * should cause the device to stay on. 2788 */ 2789 @Override // Binder call 2790 public void setStayOnSetting(int val) { 2791 mContext.enforceCallingOrSelfPermission( 2792 android.Manifest.permission.WRITE_SETTINGS, null); 2793 2794 final long ident = Binder.clearCallingIdentity(); 2795 try { 2796 setStayOnSettingInternal(val); 2797 } finally { 2798 Binder.restoreCallingIdentity(ident); 2799 } 2800 } 2801 2802 /** 2803 * Used by device administration to set the maximum screen off timeout. 2804 * 2805 * This method must only be called by the device administration policy manager. 2806 */ 2807 @Override // Binder call 2808 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2809 final long ident = Binder.clearCallingIdentity(); 2810 try { 2811 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2812 } finally { 2813 Binder.restoreCallingIdentity(ident); 2814 } 2815 } 2816 2817 /** 2818 * Used by the settings application and brightness control widgets to 2819 * temporarily override the current screen brightness setting so that the 2820 * user can observe the effect of an intended settings change without applying 2821 * it immediately. 2822 * 2823 * The override will be canceled when the setting value is next updated. 2824 * 2825 * @param brightness The overridden brightness. 2826 * 2827 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2828 */ 2829 @Override // Binder call 2830 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2831 mContext.enforceCallingOrSelfPermission( 2832 android.Manifest.permission.DEVICE_POWER, null); 2833 2834 final long ident = Binder.clearCallingIdentity(); 2835 try { 2836 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2837 } finally { 2838 Binder.restoreCallingIdentity(ident); 2839 } 2840 } 2841 2842 /** 2843 * Used by the settings application and brightness control widgets to 2844 * temporarily override the current screen auto-brightness adjustment setting so that the 2845 * user can observe the effect of an intended settings change without applying 2846 * it immediately. 2847 * 2848 * The override will be canceled when the setting value is next updated. 2849 * 2850 * @param adj The overridden brightness, or Float.NaN to disable the override. 2851 * 2852 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2853 */ 2854 @Override // Binder call 2855 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2856 mContext.enforceCallingOrSelfPermission( 2857 android.Manifest.permission.DEVICE_POWER, null); 2858 2859 final long ident = Binder.clearCallingIdentity(); 2860 try { 2861 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2862 } finally { 2863 Binder.restoreCallingIdentity(ident); 2864 } 2865 } 2866 2867 /** 2868 * Used by the phone application to make the attention LED flash when ringing. 2869 */ 2870 @Override // Binder call 2871 public void setAttentionLight(boolean on, int color) { 2872 mContext.enforceCallingOrSelfPermission( 2873 android.Manifest.permission.DEVICE_POWER, null); 2874 2875 final long ident = Binder.clearCallingIdentity(); 2876 try { 2877 setAttentionLightInternal(on, color); 2878 } finally { 2879 Binder.restoreCallingIdentity(ident); 2880 } 2881 } 2882 2883 @Override // Binder call 2884 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2885 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2886 != PackageManager.PERMISSION_GRANTED) { 2887 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2888 + Binder.getCallingPid() 2889 + ", uid=" + Binder.getCallingUid()); 2890 return; 2891 } 2892 2893 final long ident = Binder.clearCallingIdentity(); 2894 try { 2895 dumpInternal(pw); 2896 } finally { 2897 Binder.restoreCallingIdentity(ident); 2898 } 2899 } 2900 } 2901 2902 private final class LocalService extends PowerManagerInternal { 2903 /** 2904 * Used by the window manager to override the screen brightness based on the 2905 * current foreground activity. 2906 * 2907 * This method must only be called by the window manager. 2908 * 2909 * @param brightness The overridden brightness, or -1 to disable the override. 2910 */ 2911 @Override 2912 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 2913 mContext.enforceCallingOrSelfPermission( 2914 android.Manifest.permission.DEVICE_POWER, null); 2915 2916 final long ident = Binder.clearCallingIdentity(); 2917 try { 2918 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 2919 } finally { 2920 Binder.restoreCallingIdentity(ident); 2921 } 2922 } 2923 2924 /** 2925 * Used by the window manager to override the button brightness based on the 2926 * current foreground activity. 2927 * 2928 * This method must only be called by the window manager. 2929 * 2930 * @param brightness The overridden brightness, or -1 to disable the override. 2931 */ 2932 @Override 2933 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 2934 // Do nothing. 2935 // Button lights are not currently supported in the new implementation. 2936 mContext.enforceCallingOrSelfPermission( 2937 android.Manifest.permission.DEVICE_POWER, null); 2938 } 2939 2940 /** 2941 * Used by the window manager to override the user activity timeout based on the 2942 * current foreground activity. It can only be used to make the timeout shorter 2943 * than usual, not longer. 2944 * 2945 * This method must only be called by the window manager. 2946 * 2947 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 2948 */ 2949 @Override 2950 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 2951 mContext.enforceCallingOrSelfPermission( 2952 android.Manifest.permission.DEVICE_POWER, null); 2953 2954 final long ident = Binder.clearCallingIdentity(); 2955 try { 2956 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 2957 } finally { 2958 Binder.restoreCallingIdentity(ident); 2959 } 2960 } 2961 2962 @Override 2963 public void setPolicy(WindowManagerPolicy policy) { 2964 PowerManagerService.this.setPolicy(policy); 2965 } 2966 } 2967} 2968