PowerManagerService.java revision 15aedf5bfceb7267f0c79e0d29e149f193b15b0a
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 // Used to send the hint to the PowerHAL indicating transitions 172 // from and to the low power mode. 173 private static final int POWER_HINT_LOW_POWER_MODE = 5; 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 // If true, the device is in low power mode. 403 private static boolean mLowPowerModeEnabled; 404 405 private native void nativeInit(); 406 407 private static native void nativeAcquireSuspendBlocker(String name); 408 private static native void nativeReleaseSuspendBlocker(String name); 409 private static native void nativeSetInteractive(boolean enable); 410 private static native void nativeSetAutoSuspend(boolean enable); 411 private static native void nativeSendPowerHint(int hintId, int data); 412 413 public PowerManagerService(Context context) { 414 super(context); 415 mContext = context; 416 synchronized (mLock) { 417 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 418 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 419 mDisplaySuspendBlocker.acquire(); 420 mHoldingDisplaySuspendBlocker = true; 421 mHalAutoSuspendModeEnabled = false; 422 mHalInteractiveModeEnabled = true; 423 424 mScreenOnBlocker = new ScreenOnBlockerImpl(); 425 mWakefulness = WAKEFULNESS_AWAKE; 426 mInteractive = true; 427 428 nativeInit(); 429 nativeSetAutoSuspend(false); 430 nativeSetInteractive(true); 431 } 432 } 433 434 @Override 435 public void onStart() { 436 publishBinderService(Context.POWER_SERVICE, new BinderService()); 437 publishLocalService(PowerManagerInternal.class, new LocalService()); 438 } 439 440 /** 441 * Initialize the power manager. 442 * Must be called before any other functions within the power manager are called. 443 */ 444 public void init(LightsManager ls, 445 BatteryService bs, IBatteryStats bss, 446 IAppOpsService appOps) { 447 mLightsManager = ls; 448 mBatteryService = bs; 449 mBatteryStats = bss; 450 mAppOps = appOps; 451 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 452 mHandlerThread = new ServiceThread(TAG, 453 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 454 mHandlerThread.start(); 455 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 456 457 Watchdog.getInstance().addMonitor(this); 458 Watchdog.getInstance().addThread(mHandler); 459 } 460 461 void setPolicy(WindowManagerPolicy policy) { 462 synchronized (mLock) { 463 mPolicy = policy; 464 } 465 } 466 467 public void systemReady() { 468 synchronized (mLock) { 469 mSystemReady = true; 470 mDreamManager = LocalServices.getService(DreamManagerInternal.class); 471 472 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 473 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 474 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 475 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 476 477 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 478 479 // The notifier runs on the system server's main looper so as not to interfere 480 // with the animations and other critical functions of the power manager. 481 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 482 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 483 mScreenOnBlocker, mPolicy); 484 485 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 486 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 487 mHandler); 488 mSettingsObserver = new SettingsObserver(mHandler); 489 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 490 491 // Initialize display power management. 492 mDisplayManagerInternal.initPowerManagement( 493 mDisplayPowerCallbacks, mHandler, sensorManager); 494 495 // Register for broadcasts from other components of the system. 496 IntentFilter filter = new IntentFilter(); 497 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 498 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 499 500 filter = new IntentFilter(); 501 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 502 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 503 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 504 505 filter = new IntentFilter(); 506 filter.addAction(Intent.ACTION_DREAMING_STARTED); 507 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 508 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 509 510 filter = new IntentFilter(); 511 filter.addAction(Intent.ACTION_USER_SWITCHED); 512 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 513 514 filter = new IntentFilter(); 515 filter.addAction(Intent.ACTION_DOCK_EVENT); 516 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 517 518 // Register for settings changes. 519 final ContentResolver resolver = mContext.getContentResolver(); 520 resolver.registerContentObserver(Settings.Secure.getUriFor( 521 Settings.Secure.SCREENSAVER_ENABLED), 522 false, mSettingsObserver, UserHandle.USER_ALL); 523 resolver.registerContentObserver(Settings.Secure.getUriFor( 524 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 525 false, mSettingsObserver, UserHandle.USER_ALL); 526 resolver.registerContentObserver(Settings.Secure.getUriFor( 527 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 528 false, mSettingsObserver, UserHandle.USER_ALL); 529 resolver.registerContentObserver(Settings.System.getUriFor( 530 Settings.System.SCREEN_OFF_TIMEOUT), 531 false, mSettingsObserver, UserHandle.USER_ALL); 532 resolver.registerContentObserver(Settings.Global.getUriFor( 533 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 534 false, mSettingsObserver, UserHandle.USER_ALL); 535 resolver.registerContentObserver(Settings.System.getUriFor( 536 Settings.System.SCREEN_BRIGHTNESS), 537 false, mSettingsObserver, UserHandle.USER_ALL); 538 resolver.registerContentObserver(Settings.System.getUriFor( 539 Settings.System.SCREEN_BRIGHTNESS_MODE), 540 false, mSettingsObserver, UserHandle.USER_ALL); 541 resolver.registerContentObserver(Settings.Global.getUriFor( 542 Settings.Global.LOW_POWER_MODE), 543 false, mSettingsObserver, UserHandle.USER_ALL); 544 // Go. 545 readConfigurationLocked(); 546 updateSettingsLocked(); 547 mDirty |= DIRTY_BATTERY_STATE; 548 updatePowerStateLocked(); 549 } 550 } 551 552 private void readConfigurationLocked() { 553 final Resources resources = mContext.getResources(); 554 555 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 556 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 557 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 558 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 559 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 560 com.android.internal.R.bool.config_unplugTurnsOnScreen); 561 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 562 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 563 mDreamsSupportedConfig = resources.getBoolean( 564 com.android.internal.R.bool.config_dreamsSupported); 565 mDreamsEnabledByDefaultConfig = resources.getBoolean( 566 com.android.internal.R.bool.config_dreamsEnabledByDefault); 567 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 568 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 569 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 570 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 571 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 572 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 573 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 574 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 575 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 576 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 577 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 578 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 579 } 580 581 private void updateSettingsLocked() { 582 final ContentResolver resolver = mContext.getContentResolver(); 583 584 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 585 Settings.Secure.SCREENSAVER_ENABLED, 586 mDreamsEnabledByDefaultConfig ? 1 : 0, 587 UserHandle.USER_CURRENT) != 0); 588 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 589 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 590 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 591 UserHandle.USER_CURRENT) != 0); 592 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 593 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 594 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 595 UserHandle.USER_CURRENT) != 0); 596 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 597 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 598 UserHandle.USER_CURRENT); 599 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 600 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 601 602 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 603 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 604 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 605 UserHandle.USER_CURRENT); 606 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 607 mTemporaryScreenBrightnessSettingOverride = -1; 608 } 609 610 final float oldScreenAutoBrightnessAdjustmentSetting = 611 mScreenAutoBrightnessAdjustmentSetting; 612 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 613 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 614 UserHandle.USER_CURRENT); 615 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 616 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 617 } 618 619 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 620 Settings.System.SCREEN_BRIGHTNESS_MODE, 621 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 622 623 boolean lowPowerModeEnabled = Settings.Global.getInt(resolver, 624 Settings.Global.LOW_POWER_MODE, 0) != 0; 625 if (lowPowerModeEnabled != mLowPowerModeEnabled) { 626 powerHintInternal(POWER_HINT_LOW_POWER_MODE, lowPowerModeEnabled ? 1 : 0); 627 mLowPowerModeEnabled = lowPowerModeEnabled; 628 } 629 630 mDirty |= DIRTY_SETTINGS; 631 } 632 633 private void handleSettingsChangedLocked() { 634 updateSettingsLocked(); 635 updatePowerStateLocked(); 636 } 637 638 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 639 WorkSource ws, String historyTag, int uid, int pid) { 640 synchronized (mLock) { 641 if (DEBUG_SPEW) { 642 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 643 + ", flags=0x" + Integer.toHexString(flags) 644 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 645 } 646 647 WakeLock wakeLock; 648 int index = findWakeLockIndexLocked(lock); 649 if (index >= 0) { 650 wakeLock = mWakeLocks.get(index); 651 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 652 // Update existing wake lock. This shouldn't happen but is harmless. 653 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 654 uid, pid, ws, historyTag); 655 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 656 } 657 } else { 658 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 659 try { 660 lock.linkToDeath(wakeLock, 0); 661 } catch (RemoteException ex) { 662 throw new IllegalArgumentException("Wake lock is already dead."); 663 } 664 notifyWakeLockAcquiredLocked(wakeLock); 665 mWakeLocks.add(wakeLock); 666 } 667 668 applyWakeLockFlagsOnAcquireLocked(wakeLock); 669 mDirty |= DIRTY_WAKE_LOCKS; 670 updatePowerStateLocked(); 671 } 672 } 673 674 @SuppressWarnings("deprecation") 675 private static boolean isScreenLock(final WakeLock wakeLock) { 676 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 677 case PowerManager.FULL_WAKE_LOCK: 678 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 679 case PowerManager.SCREEN_DIM_WAKE_LOCK: 680 return true; 681 } 682 return false; 683 } 684 685 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 686 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 687 && isScreenLock(wakeLock)) { 688 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 689 } 690 } 691 692 private void releaseWakeLockInternal(IBinder lock, int flags) { 693 synchronized (mLock) { 694 int index = findWakeLockIndexLocked(lock); 695 if (index < 0) { 696 if (DEBUG_SPEW) { 697 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 698 + " [not found], flags=0x" + Integer.toHexString(flags)); 699 } 700 return; 701 } 702 703 WakeLock wakeLock = mWakeLocks.get(index); 704 if (DEBUG_SPEW) { 705 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 706 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 707 } 708 709 mWakeLocks.remove(index); 710 notifyWakeLockReleasedLocked(wakeLock); 711 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 712 713 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 714 mRequestWaitForNegativeProximity = true; 715 } 716 717 applyWakeLockFlagsOnReleaseLocked(wakeLock); 718 mDirty |= DIRTY_WAKE_LOCKS; 719 updatePowerStateLocked(); 720 } 721 } 722 723 private void handleWakeLockDeath(WakeLock wakeLock) { 724 synchronized (mLock) { 725 if (DEBUG_SPEW) { 726 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 727 + " [" + wakeLock.mTag + "]"); 728 } 729 730 int index = mWakeLocks.indexOf(wakeLock); 731 if (index < 0) { 732 return; 733 } 734 735 mWakeLocks.remove(index); 736 notifyWakeLockReleasedLocked(wakeLock); 737 738 applyWakeLockFlagsOnReleaseLocked(wakeLock); 739 mDirty |= DIRTY_WAKE_LOCKS; 740 updatePowerStateLocked(); 741 } 742 } 743 744 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 745 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 746 && isScreenLock(wakeLock)) { 747 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 748 PowerManager.USER_ACTIVITY_EVENT_OTHER, 749 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 750 wakeLock.mOwnerUid); 751 } 752 } 753 754 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag) { 755 synchronized (mLock) { 756 int index = findWakeLockIndexLocked(lock); 757 if (index < 0) { 758 if (DEBUG_SPEW) { 759 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 760 + " [not found], ws=" + ws); 761 } 762 throw new IllegalArgumentException("Wake lock not active"); 763 } 764 765 WakeLock wakeLock = mWakeLocks.get(index); 766 if (DEBUG_SPEW) { 767 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 768 + " [" + wakeLock.mTag + "], ws=" + ws); 769 } 770 771 if (!wakeLock.hasSameWorkSource(ws)) { 772 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 773 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 774 ws, historyTag); 775 wakeLock.mHistoryTag = historyTag; 776 wakeLock.updateWorkSource(ws); 777 } 778 } 779 } 780 781 private int findWakeLockIndexLocked(IBinder lock) { 782 final int count = mWakeLocks.size(); 783 for (int i = 0; i < count; i++) { 784 if (mWakeLocks.get(i).mLock == lock) { 785 return i; 786 } 787 } 788 return -1; 789 } 790 791 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 792 if (mSystemReady) { 793 wakeLock.mNotifiedAcquired = true; 794 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 795 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 796 wakeLock.mHistoryTag); 797 } 798 } 799 800 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 801 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 802 if (mSystemReady && wakeLock.mNotifiedAcquired) { 803 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 804 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 805 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 806 } 807 } 808 809 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 810 if (mSystemReady && wakeLock.mNotifiedAcquired) { 811 wakeLock.mNotifiedAcquired = false; 812 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 813 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 814 } 815 } 816 817 @SuppressWarnings("deprecation") 818 private boolean isWakeLockLevelSupportedInternal(int level) { 819 synchronized (mLock) { 820 switch (level) { 821 case PowerManager.PARTIAL_WAKE_LOCK: 822 case PowerManager.SCREEN_DIM_WAKE_LOCK: 823 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 824 case PowerManager.FULL_WAKE_LOCK: 825 case PowerManager.DOZE_WAKE_LOCK: 826 return true; 827 828 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 829 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 830 831 default: 832 return false; 833 } 834 } 835 } 836 837 // Called from native code. 838 private void userActivityFromNative(long eventTime, int event, int flags) { 839 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 840 } 841 842 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 843 synchronized (mLock) { 844 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 845 updatePowerStateLocked(); 846 } 847 } 848 } 849 850 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 851 if (DEBUG_SPEW) { 852 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 853 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 854 + ", uid=" + uid); 855 } 856 857 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 858 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 859 || !mBootCompleted || !mSystemReady) { 860 return false; 861 } 862 863 mNotifier.onUserActivity(event, uid); 864 865 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 866 if (eventTime > mLastUserActivityTimeNoChangeLights 867 && eventTime > mLastUserActivityTime) { 868 mLastUserActivityTimeNoChangeLights = eventTime; 869 mDirty |= DIRTY_USER_ACTIVITY; 870 return true; 871 } 872 } else { 873 if (eventTime > mLastUserActivityTime) { 874 mLastUserActivityTime = eventTime; 875 mDirty |= DIRTY_USER_ACTIVITY; 876 return true; 877 } 878 } 879 return false; 880 } 881 882 private void wakeUpInternal(long eventTime) { 883 synchronized (mLock) { 884 if (wakeUpNoUpdateLocked(eventTime)) { 885 updatePowerStateLocked(); 886 } 887 } 888 } 889 890 private boolean wakeUpNoUpdateLocked(long eventTime) { 891 if (DEBUG_SPEW) { 892 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 893 } 894 895 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 896 || !mBootCompleted || !mSystemReady) { 897 return false; 898 } 899 900 switch (mWakefulness) { 901 case WAKEFULNESS_ASLEEP: 902 Slog.i(TAG, "Waking up from sleep..."); 903 break; 904 case WAKEFULNESS_DREAMING: 905 Slog.i(TAG, "Waking up from dream..."); 906 break; 907 case WAKEFULNESS_DOZING: 908 Slog.i(TAG, "Waking up from dozing..."); 909 break; 910 } 911 912 mLastWakeTime = eventTime; 913 mDirty |= DIRTY_WAKEFULNESS; 914 mWakefulness = WAKEFULNESS_AWAKE; 915 setInteractiveStateLocked(true, 0); 916 917 userActivityNoUpdateLocked( 918 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 919 return true; 920 } 921 922 private void goToSleepInternal(long eventTime, int reason) { 923 synchronized (mLock) { 924 if (goToSleepNoUpdateLocked(eventTime, reason)) { 925 updatePowerStateLocked(); 926 } 927 } 928 } 929 930 // This method is called goToSleep for historical reasons but we actually start 931 // dozing before really going to sleep. 932 @SuppressWarnings("deprecation") 933 private boolean goToSleepNoUpdateLocked(long eventTime, int reason) { 934 if (DEBUG_SPEW) { 935 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime + ", reason=" + reason); 936 } 937 938 if (eventTime < mLastWakeTime 939 || mWakefulness == WAKEFULNESS_ASLEEP 940 || mWakefulness == WAKEFULNESS_DOZING 941 || !mBootCompleted || !mSystemReady) { 942 return false; 943 } 944 945 switch (reason) { 946 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 947 Slog.i(TAG, "Going to sleep due to device administration policy..."); 948 break; 949 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 950 Slog.i(TAG, "Going to sleep due to screen timeout..."); 951 break; 952 default: 953 Slog.i(TAG, "Going to sleep by user request..."); 954 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 955 break; 956 } 957 958 mLastSleepTime = eventTime; 959 mDirty |= DIRTY_WAKEFULNESS; 960 mWakefulness = WAKEFULNESS_DOZING; 961 mSandmanSummoned = true; 962 setInteractiveStateLocked(false, reason); 963 964 // Report the number of wake locks that will be cleared by going to sleep. 965 int numWakeLocksCleared = 0; 966 final int numWakeLocks = mWakeLocks.size(); 967 for (int i = 0; i < numWakeLocks; i++) { 968 final WakeLock wakeLock = mWakeLocks.get(i); 969 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 970 case PowerManager.FULL_WAKE_LOCK: 971 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 972 case PowerManager.SCREEN_DIM_WAKE_LOCK: 973 numWakeLocksCleared += 1; 974 break; 975 } 976 } 977 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 978 return true; 979 } 980 981 private void napInternal(long eventTime) { 982 synchronized (mLock) { 983 if (napNoUpdateLocked(eventTime)) { 984 updatePowerStateLocked(); 985 } 986 } 987 } 988 989 private boolean napNoUpdateLocked(long eventTime) { 990 if (DEBUG_SPEW) { 991 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 992 } 993 994 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 995 || !mBootCompleted || !mSystemReady) { 996 return false; 997 } 998 999 Slog.i(TAG, "Nap time..."); 1000 1001 mDirty |= DIRTY_WAKEFULNESS; 1002 mWakefulness = WAKEFULNESS_DREAMING; 1003 mSandmanSummoned = true; 1004 setInteractiveStateLocked(true, 0); 1005 return true; 1006 } 1007 1008 // Done dozing, drop everything and go to sleep. 1009 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 1010 if (DEBUG_SPEW) { 1011 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 1012 } 1013 1014 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1015 || !mBootCompleted || !mSystemReady) { 1016 return false; 1017 } 1018 1019 Slog.i(TAG, "Sleeping..."); 1020 1021 mDirty |= DIRTY_WAKEFULNESS; 1022 mWakefulness = WAKEFULNESS_ASLEEP; 1023 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1024 return true; 1025 } 1026 1027 private void setInteractiveStateLocked(boolean interactive, int reason) { 1028 if (mInteractive != interactive) { 1029 finishInteractiveStateChangeLocked(); 1030 1031 mInteractive = interactive; 1032 mInteractiveChanging = true; 1033 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1034 } 1035 } 1036 1037 private void finishInteractiveStateChangeLocked() { 1038 if (mInteractiveChanging) { 1039 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1040 mInteractiveChanging = false; 1041 } 1042 } 1043 1044 /** 1045 * Updates the global power state based on dirty bits recorded in mDirty. 1046 * 1047 * This is the main function that performs power state transitions. 1048 * We centralize them here so that we can recompute the power state completely 1049 * each time something important changes, and ensure that we do it the same 1050 * way each time. The point is to gather all of the transition logic here. 1051 */ 1052 private void updatePowerStateLocked() { 1053 if (!mSystemReady || mDirty == 0) { 1054 return; 1055 } 1056 if (!Thread.holdsLock(mLock)) { 1057 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1058 } 1059 1060 // Phase 0: Basic state updates. 1061 updateIsPoweredLocked(mDirty); 1062 updateStayOnLocked(mDirty); 1063 1064 // Phase 1: Update wakefulness. 1065 // Loop because the wake lock and user activity computations are influenced 1066 // by changes in wakefulness. 1067 final long now = SystemClock.uptimeMillis(); 1068 int dirtyPhase2 = 0; 1069 for (;;) { 1070 int dirtyPhase1 = mDirty; 1071 dirtyPhase2 |= dirtyPhase1; 1072 mDirty = 0; 1073 1074 updateWakeLockSummaryLocked(dirtyPhase1); 1075 updateUserActivitySummaryLocked(now, dirtyPhase1); 1076 if (!updateWakefulnessLocked(dirtyPhase1)) { 1077 break; 1078 } 1079 } 1080 1081 // Phase 2: Update dreams and display power state. 1082 updateDreamLocked(dirtyPhase2); 1083 updateDisplayPowerStateLocked(dirtyPhase2); 1084 1085 // Phase 3: Send notifications, if needed. 1086 if (mDisplayReady) { 1087 finishInteractiveStateChangeLocked(); 1088 } 1089 1090 // Phase 4: Update suspend blocker. 1091 // Because we might release the last suspend blocker here, we need to make sure 1092 // we finished everything else first! 1093 updateSuspendBlockerLocked(); 1094 } 1095 1096 /** 1097 * Updates the value of mIsPowered. 1098 * Sets DIRTY_IS_POWERED if a change occurred. 1099 */ 1100 private void updateIsPoweredLocked(int dirty) { 1101 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1102 final boolean wasPowered = mIsPowered; 1103 final int oldPlugType = mPlugType; 1104 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1105 mPlugType = mBatteryService.getPlugType(); 1106 mBatteryLevel = mBatteryService.getBatteryLevel(); 1107 1108 if (DEBUG_SPEW) { 1109 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1110 + ", mIsPowered=" + mIsPowered 1111 + ", oldPlugType=" + oldPlugType 1112 + ", mPlugType=" + mPlugType 1113 + ", mBatteryLevel=" + mBatteryLevel); 1114 } 1115 1116 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1117 mDirty |= DIRTY_IS_POWERED; 1118 1119 // Update wireless dock detection state. 1120 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1121 mIsPowered, mPlugType, mBatteryLevel); 1122 1123 // Treat plugging and unplugging the devices as a user activity. 1124 // Users find it disconcerting when they plug or unplug the device 1125 // and it shuts off right away. 1126 // Some devices also wake the device when plugged or unplugged because 1127 // they don't have a charging LED. 1128 final long now = SystemClock.uptimeMillis(); 1129 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1130 dockedOnWirelessCharger)) { 1131 wakeUpNoUpdateLocked(now); 1132 } 1133 userActivityNoUpdateLocked( 1134 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1135 1136 // Tell the notifier whether wireless charging has started so that 1137 // it can provide feedback to the user. 1138 if (dockedOnWirelessCharger) { 1139 mNotifier.onWirelessChargingStarted(); 1140 } 1141 } 1142 } 1143 } 1144 1145 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1146 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1147 // Don't wake when powered unless configured to do so. 1148 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1149 return false; 1150 } 1151 1152 // Don't wake when undocked from wireless charger. 1153 // See WirelessChargerDetector for justification. 1154 if (wasPowered && !mIsPowered 1155 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1156 return false; 1157 } 1158 1159 // Don't wake when docked on wireless charger unless we are certain of it. 1160 // See WirelessChargerDetector for justification. 1161 if (!wasPowered && mIsPowered 1162 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1163 && !dockedOnWirelessCharger) { 1164 return false; 1165 } 1166 1167 // If already dreaming and becoming powered, then don't wake. 1168 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1169 return false; 1170 } 1171 1172 // Otherwise wake up! 1173 return true; 1174 } 1175 1176 /** 1177 * Updates the value of mStayOn. 1178 * Sets DIRTY_STAY_ON if a change occurred. 1179 */ 1180 private void updateStayOnLocked(int dirty) { 1181 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1182 final boolean wasStayOn = mStayOn; 1183 if (mStayOnWhilePluggedInSetting != 0 1184 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1185 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1186 } else { 1187 mStayOn = false; 1188 } 1189 1190 if (mStayOn != wasStayOn) { 1191 mDirty |= DIRTY_STAY_ON; 1192 } 1193 } 1194 } 1195 1196 /** 1197 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1198 * Note that most wake-locks are ignored when the system is asleep. 1199 * 1200 * This function must have no other side-effects. 1201 */ 1202 @SuppressWarnings("deprecation") 1203 private void updateWakeLockSummaryLocked(int dirty) { 1204 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1205 mWakeLockSummary = 0; 1206 1207 final int numWakeLocks = mWakeLocks.size(); 1208 for (int i = 0; i < numWakeLocks; i++) { 1209 final WakeLock wakeLock = mWakeLocks.get(i); 1210 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1211 case PowerManager.PARTIAL_WAKE_LOCK: 1212 mWakeLockSummary |= WAKE_LOCK_CPU; 1213 break; 1214 case PowerManager.FULL_WAKE_LOCK: 1215 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1216 break; 1217 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1218 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1219 break; 1220 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1221 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1222 break; 1223 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1224 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1225 break; 1226 case PowerManager.DOZE_WAKE_LOCK: 1227 mWakeLockSummary |= WAKE_LOCK_DOZE; 1228 break; 1229 } 1230 } 1231 1232 // Cancel wake locks that make no sense based on the current state. 1233 if (mWakefulness != WAKEFULNESS_DOZING) { 1234 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1235 } 1236 if (mWakefulness == WAKEFULNESS_ASLEEP 1237 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1238 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1239 | WAKE_LOCK_BUTTON_BRIGHT); 1240 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1241 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1242 } 1243 } 1244 1245 // Infer implied wake locks where necessary based on the current state. 1246 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1247 if (mWakefulness == WAKEFULNESS_AWAKE) { 1248 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1249 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1250 mWakeLockSummary |= WAKE_LOCK_CPU; 1251 } 1252 } 1253 1254 if (DEBUG_SPEW) { 1255 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1256 + wakefulnessToString(mWakefulness) 1257 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1258 } 1259 } 1260 } 1261 1262 /** 1263 * Updates the value of mUserActivitySummary to summarize the user requested 1264 * state of the system such as whether the screen should be bright or dim. 1265 * Note that user activity is ignored when the system is asleep. 1266 * 1267 * This function must have no other side-effects. 1268 */ 1269 private void updateUserActivitySummaryLocked(long now, int dirty) { 1270 // Update the status of the user activity timeout timer. 1271 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1272 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1273 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1274 1275 long nextTimeout = 0; 1276 if (mWakefulness == WAKEFULNESS_AWAKE 1277 || mWakefulness == WAKEFULNESS_DREAMING 1278 || mWakefulness == WAKEFULNESS_DOZING) { 1279 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1280 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1281 1282 mUserActivitySummary = 0; 1283 if (mLastUserActivityTime >= mLastWakeTime) { 1284 nextTimeout = mLastUserActivityTime 1285 + screenOffTimeout - screenDimDuration; 1286 if (now < nextTimeout) { 1287 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1288 } else { 1289 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1290 if (now < nextTimeout) { 1291 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1292 } 1293 } 1294 } 1295 if (mUserActivitySummary == 0 1296 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1297 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1298 if (now < nextTimeout 1299 && mDisplayPowerRequest.wantScreenOnNormal()) { 1300 mUserActivitySummary = mDisplayPowerRequest.screenState 1301 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1302 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1303 } 1304 } 1305 if (mUserActivitySummary != 0) { 1306 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1307 msg.setAsynchronous(true); 1308 mHandler.sendMessageAtTime(msg, nextTimeout); 1309 } 1310 } else { 1311 mUserActivitySummary = 0; 1312 } 1313 1314 if (DEBUG_SPEW) { 1315 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1316 + wakefulnessToString(mWakefulness) 1317 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1318 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1319 } 1320 } 1321 } 1322 1323 /** 1324 * Called when a user activity timeout has occurred. 1325 * Simply indicates that something about user activity has changed so that the new 1326 * state can be recomputed when the power state is updated. 1327 * 1328 * This function must have no other side-effects besides setting the dirty 1329 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1330 */ 1331 private void handleUserActivityTimeout() { // runs on handler thread 1332 synchronized (mLock) { 1333 if (DEBUG_SPEW) { 1334 Slog.d(TAG, "handleUserActivityTimeout"); 1335 } 1336 1337 mDirty |= DIRTY_USER_ACTIVITY; 1338 updatePowerStateLocked(); 1339 } 1340 } 1341 1342 private int getScreenOffTimeoutLocked() { 1343 int timeout = mScreenOffTimeoutSetting; 1344 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1345 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1346 } 1347 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1348 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1349 } 1350 return Math.max(timeout, MINIMUM_SCREEN_OFF_TIMEOUT); 1351 } 1352 1353 private int getScreenDimDurationLocked(int screenOffTimeout) { 1354 return Math.min(SCREEN_DIM_DURATION, 1355 (int)(screenOffTimeout * MAXIMUM_SCREEN_DIM_RATIO)); 1356 } 1357 1358 /** 1359 * Updates the wakefulness of the device. 1360 * 1361 * This is the function that decides whether the device should start dreaming 1362 * based on the current wake locks and user activity state. It may modify mDirty 1363 * if the wakefulness changes. 1364 * 1365 * Returns true if the wakefulness changed and we need to restart power state calculation. 1366 */ 1367 private boolean updateWakefulnessLocked(int dirty) { 1368 boolean changed = false; 1369 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1370 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1371 | DIRTY_DOCK_STATE)) != 0) { 1372 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1373 if (DEBUG_SPEW) { 1374 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1375 } 1376 final long time = SystemClock.uptimeMillis(); 1377 if (shouldNapAtBedTimeLocked()) { 1378 changed = napNoUpdateLocked(time); 1379 } else { 1380 changed = goToSleepNoUpdateLocked(time, 1381 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1382 } 1383 } 1384 } 1385 return changed; 1386 } 1387 1388 /** 1389 * Returns true if the device should automatically nap and start dreaming when the user 1390 * activity timeout has expired and it's bedtime. 1391 */ 1392 private boolean shouldNapAtBedTimeLocked() { 1393 return mDreamsActivateOnSleepSetting 1394 || (mDreamsActivateOnDockSetting 1395 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1396 } 1397 1398 /** 1399 * Returns true if the device should go to sleep now. 1400 * Also used when exiting a dream to determine whether we should go back 1401 * to being fully awake or else go to sleep for good. 1402 */ 1403 private boolean isItBedTimeYetLocked() { 1404 return mBootCompleted && !isBeingKeptAwakeLocked(); 1405 } 1406 1407 /** 1408 * Returns true if the device is being kept awake by a wake lock, user activity 1409 * or the stay on while powered setting. We also keep the phone awake when 1410 * the proximity sensor returns a positive result so that the device does not 1411 * lock while in a phone call. This function only controls whether the device 1412 * will go to sleep or dream which is independent of whether it will be allowed 1413 * to suspend. 1414 */ 1415 private boolean isBeingKeptAwakeLocked() { 1416 return mStayOn 1417 || mProximityPositive 1418 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1419 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1420 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1421 } 1422 1423 /** 1424 * Determines whether to post a message to the sandman to update the dream state. 1425 */ 1426 private void updateDreamLocked(int dirty) { 1427 if ((dirty & (DIRTY_WAKEFULNESS 1428 | DIRTY_USER_ACTIVITY 1429 | DIRTY_WAKE_LOCKS 1430 | DIRTY_BOOT_COMPLETED 1431 | DIRTY_SETTINGS 1432 | DIRTY_IS_POWERED 1433 | DIRTY_STAY_ON 1434 | DIRTY_PROXIMITY_POSITIVE 1435 | DIRTY_BATTERY_STATE)) != 0) { 1436 scheduleSandmanLocked(); 1437 } 1438 } 1439 1440 private void scheduleSandmanLocked() { 1441 if (!mSandmanScheduled) { 1442 mSandmanScheduled = true; 1443 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1444 msg.setAsynchronous(true); 1445 mHandler.sendMessage(msg); 1446 } 1447 } 1448 1449 /** 1450 * Called when the device enters or exits a dreaming or dozing state. 1451 * 1452 * We do this asynchronously because we must call out of the power manager to start 1453 * the dream and we don't want to hold our lock while doing so. There is a risk that 1454 * the device will wake or go to sleep in the meantime so we have to handle that case. 1455 */ 1456 private void handleSandman() { // runs on handler thread 1457 // Handle preconditions. 1458 final boolean startDreaming; 1459 final int wakefulness; 1460 synchronized (mLock) { 1461 mSandmanScheduled = false; 1462 wakefulness = mWakefulness; 1463 if (mSandmanSummoned) { 1464 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1465 || wakefulness == WAKEFULNESS_DOZING); 1466 mSandmanSummoned = false; 1467 } else { 1468 startDreaming = false; 1469 } 1470 } 1471 1472 // Start dreaming if needed. 1473 // We only control the dream on the handler thread, so we don't need to worry about 1474 // concurrent attempts to start or stop the dream. 1475 final boolean isDreaming; 1476 if (mDreamManager != null) { 1477 // Restart the dream whenever the sandman is summoned. 1478 if (startDreaming) { 1479 mDreamManager.stopDream(); 1480 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1481 } 1482 isDreaming = mDreamManager.isDreaming(); 1483 } else { 1484 isDreaming = false; 1485 } 1486 1487 // Update dream state. 1488 synchronized (mLock) { 1489 // Remember the initial battery level when the dream started. 1490 if (startDreaming && isDreaming) { 1491 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1492 if (wakefulness == WAKEFULNESS_DOZING) { 1493 Slog.i(TAG, "Dozing..."); 1494 } else { 1495 Slog.i(TAG, "Dreaming..."); 1496 } 1497 } 1498 1499 // If preconditions changed, wait for the next iteration to determine 1500 // whether the dream should continue (or be restarted). 1501 if (mSandmanSummoned || mWakefulness != wakefulness) { 1502 return; // wait for next cycle 1503 } 1504 1505 // Determine whether the dream should continue. 1506 if (wakefulness == WAKEFULNESS_DREAMING) { 1507 if (isDreaming && canDreamLocked()) { 1508 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1509 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1510 - mDreamsBatteryLevelDrainCutoffConfig 1511 && !isBeingKeptAwakeLocked()) { 1512 // If the user activity timeout expired and the battery appears 1513 // to be draining faster than it is charging then stop dreaming 1514 // and go to sleep. 1515 Slog.i(TAG, "Stopping dream because the battery appears to " 1516 + "be draining faster than it is charging. " 1517 + "Battery level when dream started: " 1518 + mBatteryLevelWhenDreamStarted + "%. " 1519 + "Battery level now: " + mBatteryLevel + "%."); 1520 } else { 1521 return; // continue dreaming 1522 } 1523 } 1524 1525 // Dream has ended or will be stopped. Update the power state. 1526 if (isItBedTimeYetLocked()) { 1527 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1528 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1529 updatePowerStateLocked(); 1530 } else { 1531 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1532 updatePowerStateLocked(); 1533 } 1534 } else if (wakefulness == WAKEFULNESS_DOZING) { 1535 if (isDreaming) { 1536 return; // continue dozing 1537 } 1538 1539 // Doze has ended or will be stopped. Update the power state. 1540 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1541 updatePowerStateLocked(); 1542 } 1543 } 1544 1545 // Stop dream. 1546 if (isDreaming) { 1547 mDreamManager.stopDream(); 1548 } 1549 } 1550 1551 /** 1552 * Returns true if the device is allowed to dream in its current state. 1553 * This function is not called when dozing. 1554 */ 1555 private boolean canDreamLocked() { 1556 if (mWakefulness != WAKEFULNESS_DREAMING 1557 || !mDreamsSupportedConfig 1558 || !mDreamsEnabledSetting 1559 || !mDisplayPowerRequest.wantScreenOnNormal() 1560 || !mBootCompleted) { 1561 return false; 1562 } 1563 if (!isBeingKeptAwakeLocked()) { 1564 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1565 return false; 1566 } 1567 if (!mIsPowered 1568 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1569 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1570 return false; 1571 } 1572 if (mIsPowered 1573 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1574 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1575 return false; 1576 } 1577 } 1578 return true; 1579 } 1580 1581 private void handleScreenOnBlockerReleased() { 1582 synchronized (mLock) { 1583 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1584 updatePowerStateLocked(); 1585 } 1586 } 1587 1588 /** 1589 * Updates the display power state asynchronously. 1590 * When the update is finished, mDisplayReady will be set to true. The display 1591 * controller posts a message to tell us when the actual display power state 1592 * has been updated so we come back here to double-check and finish up. 1593 * 1594 * This function recalculates the display power state each time. 1595 */ 1596 private void updateDisplayPowerStateLocked(int dirty) { 1597 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1598 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1599 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1600 final int newScreenState = getDesiredScreenPowerStateLocked(); 1601 mDisplayPowerRequest.screenState = newScreenState; 1602 1603 int screenBrightness = mScreenBrightnessSettingDefault; 1604 float screenAutoBrightnessAdjustment = 0.0f; 1605 boolean autoBrightness = (mScreenBrightnessModeSetting == 1606 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1607 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1608 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1609 autoBrightness = false; 1610 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1611 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1612 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1613 screenBrightness = mScreenBrightnessSetting; 1614 } 1615 if (autoBrightness) { 1616 screenBrightness = mScreenBrightnessSettingDefault; 1617 if (isValidAutoBrightnessAdjustment( 1618 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1619 screenAutoBrightnessAdjustment = 1620 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1621 } else if (isValidAutoBrightnessAdjustment( 1622 mScreenAutoBrightnessAdjustmentSetting)) { 1623 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1624 } 1625 } 1626 screenBrightness = Math.max(Math.min(screenBrightness, 1627 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1628 screenAutoBrightnessAdjustment = Math.max(Math.min( 1629 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1630 mDisplayPowerRequest.screenBrightness = screenBrightness; 1631 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1632 screenAutoBrightnessAdjustment; 1633 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1634 1635 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1636 1637 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1638 1639 mDisplayPowerRequest.lowPowerMode = mLowPowerModeEnabled; 1640 1641 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1642 mRequestWaitForNegativeProximity); 1643 mRequestWaitForNegativeProximity = false; 1644 1645 if (DEBUG_SPEW) { 1646 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1647 + ", newScreenState=" + newScreenState 1648 + ", mWakefulness=" + mWakefulness 1649 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1650 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1651 + ", mBootCompleted=" + mBootCompleted); 1652 } 1653 } 1654 } 1655 1656 private static boolean isValidBrightness(int value) { 1657 return value >= 0 && value <= 255; 1658 } 1659 1660 private static boolean isValidAutoBrightnessAdjustment(float value) { 1661 // Handles NaN by always returning false. 1662 return value >= -1.0f && value <= 1.0f; 1663 } 1664 1665 private int getDesiredScreenPowerStateLocked() { 1666 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1667 return DisplayPowerRequest.SCREEN_STATE_OFF; 1668 } 1669 1670 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1671 return DisplayPowerRequest.SCREEN_STATE_DOZE; 1672 } 1673 1674 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1675 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1676 || !mBootCompleted) { 1677 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1678 } 1679 1680 return DisplayPowerRequest.SCREEN_STATE_DIM; 1681 } 1682 1683 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1684 new DisplayManagerInternal.DisplayPowerCallbacks() { 1685 private int mDisplayState = Display.STATE_UNKNOWN; 1686 1687 @Override 1688 public void onStateChanged() { 1689 synchronized (mLock) { 1690 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1691 updatePowerStateLocked(); 1692 } 1693 } 1694 1695 @Override 1696 public void onProximityPositive() { 1697 synchronized (mLock) { 1698 mProximityPositive = true; 1699 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1700 updatePowerStateLocked(); 1701 } 1702 } 1703 1704 @Override 1705 public void onProximityNegative() { 1706 synchronized (mLock) { 1707 mProximityPositive = false; 1708 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1709 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1710 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1711 updatePowerStateLocked(); 1712 } 1713 } 1714 1715 @Override 1716 public void onDisplayStateChange(int state) { 1717 // This method is only needed to support legacy display blanking behavior 1718 // where the display's power state is coupled to suspend or to the power HAL. 1719 // The order of operations matters here. 1720 synchronized (mLock) { 1721 if (mDisplayState != state) { 1722 mDisplayState = state; 1723 if (state == Display.STATE_OFF) { 1724 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1725 setHalInteractiveModeLocked(false); 1726 } 1727 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1728 setHalAutoSuspendModeLocked(true); 1729 } 1730 } else { 1731 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1732 setHalAutoSuspendModeLocked(false); 1733 } 1734 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1735 setHalInteractiveModeLocked(true); 1736 } 1737 } 1738 } 1739 } 1740 } 1741 1742 @Override 1743 public void acquireSuspendBlocker() { 1744 mDisplaySuspendBlocker.acquire(); 1745 } 1746 1747 @Override 1748 public void releaseSuspendBlocker() { 1749 mDisplaySuspendBlocker.release(); 1750 } 1751 1752 @Override 1753 public String toString() { 1754 synchronized (this) { 1755 return "state=" + Display.stateToString(mDisplayState); 1756 } 1757 } 1758 }; 1759 1760 private boolean shouldUseProximitySensorLocked() { 1761 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1762 } 1763 1764 /** 1765 * Updates the suspend blocker that keeps the CPU alive. 1766 * 1767 * This function must have no other side-effects. 1768 */ 1769 private void updateSuspendBlockerLocked() { 1770 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1771 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1772 final boolean autoSuspend = !needDisplaySuspendBlocker; 1773 1774 // Disable auto-suspend if needed. 1775 if (!autoSuspend) { 1776 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1777 setHalAutoSuspendModeLocked(false); 1778 } 1779 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1780 setHalInteractiveModeLocked(true); 1781 } 1782 } 1783 1784 // First acquire suspend blockers if needed. 1785 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1786 mWakeLockSuspendBlocker.acquire(); 1787 mHoldingWakeLockSuspendBlocker = true; 1788 } 1789 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1790 mDisplaySuspendBlocker.acquire(); 1791 mHoldingDisplaySuspendBlocker = true; 1792 } 1793 1794 // Then release suspend blockers if needed. 1795 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1796 mWakeLockSuspendBlocker.release(); 1797 mHoldingWakeLockSuspendBlocker = false; 1798 } 1799 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1800 mDisplaySuspendBlocker.release(); 1801 mHoldingDisplaySuspendBlocker = false; 1802 } 1803 1804 // Enable auto-suspend if needed. 1805 if (autoSuspend) { 1806 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1807 setHalInteractiveModeLocked(false); 1808 } 1809 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1810 setHalAutoSuspendModeLocked(true); 1811 } 1812 } 1813 } 1814 1815 /** 1816 * Return true if we must keep a suspend blocker active on behalf of the display. 1817 * We do so if the screen is on or is in transition between states. 1818 */ 1819 private boolean needDisplaySuspendBlockerLocked() { 1820 if (!mDisplayReady) { 1821 return true; 1822 } 1823 if (mDisplayPowerRequest.wantScreenOnNormal()) { 1824 // If we asked for the screen to be on but it is off due to the proximity 1825 // sensor then we may suspend but only if the configuration allows it. 1826 // On some hardware it may not be safe to suspend because the proximity 1827 // sensor may not be correctly configured as a wake-up source. 1828 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1829 || !mSuspendWhenScreenOffDueToProximityConfig) { 1830 return true; 1831 } 1832 } 1833 // Let the system suspend if the screen is off or dozing. 1834 return false; 1835 } 1836 1837 private void setHalAutoSuspendModeLocked(boolean enable) { 1838 if (enable != mHalAutoSuspendModeEnabled) { 1839 if (DEBUG) { 1840 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 1841 } 1842 mHalAutoSuspendModeEnabled = enable; 1843 nativeSetAutoSuspend(enable); 1844 } 1845 } 1846 1847 private void setHalInteractiveModeLocked(boolean enable) { 1848 if (enable != mHalInteractiveModeEnabled) { 1849 if (DEBUG) { 1850 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 1851 } 1852 mHalInteractiveModeEnabled = enable; 1853 nativeSetInteractive(enable); 1854 } 1855 } 1856 1857 private boolean isInteractiveInternal() { 1858 synchronized (mLock) { 1859 return mInteractive; 1860 } 1861 } 1862 1863 private void handleBatteryStateChangedLocked() { 1864 mDirty |= DIRTY_BATTERY_STATE; 1865 updatePowerStateLocked(); 1866 } 1867 1868 private void startWatchingForBootAnimationFinished() { 1869 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1870 } 1871 1872 private void checkIfBootAnimationFinished() { 1873 if (DEBUG) { 1874 Slog.d(TAG, "Check if boot animation finished..."); 1875 } 1876 1877 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1878 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1879 BOOT_ANIMATION_POLL_INTERVAL); 1880 return; 1881 } 1882 1883 synchronized (mLock) { 1884 if (!mBootCompleted) { 1885 Slog.i(TAG, "Boot animation finished."); 1886 handleBootCompletedLocked(); 1887 } 1888 } 1889 } 1890 1891 private void handleBootCompletedLocked() { 1892 final long now = SystemClock.uptimeMillis(); 1893 mBootCompleted = true; 1894 mDirty |= DIRTY_BOOT_COMPLETED; 1895 userActivityNoUpdateLocked( 1896 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1897 updatePowerStateLocked(); 1898 } 1899 1900 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1901 final String reason, boolean wait) { 1902 if (mHandler == null || !mSystemReady) { 1903 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1904 } 1905 1906 Runnable runnable = new Runnable() { 1907 @Override 1908 public void run() { 1909 synchronized (this) { 1910 if (shutdown) { 1911 ShutdownThread.shutdown(mContext, confirm); 1912 } else { 1913 ShutdownThread.reboot(mContext, reason, confirm); 1914 } 1915 } 1916 } 1917 }; 1918 1919 // ShutdownThread must run on a looper capable of displaying the UI. 1920 Message msg = Message.obtain(mHandler, runnable); 1921 msg.setAsynchronous(true); 1922 mHandler.sendMessage(msg); 1923 1924 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 1925 if (wait) { 1926 synchronized (runnable) { 1927 while (true) { 1928 try { 1929 runnable.wait(); 1930 } catch (InterruptedException e) { 1931 } 1932 } 1933 } 1934 } 1935 } 1936 1937 private void crashInternal(final String message) { 1938 Thread t = new Thread("PowerManagerService.crash()") { 1939 @Override 1940 public void run() { 1941 throw new RuntimeException(message); 1942 } 1943 }; 1944 try { 1945 t.start(); 1946 t.join(); 1947 } catch (InterruptedException e) { 1948 Log.wtf(TAG, e); 1949 } 1950 } 1951 1952 private void setStayOnSettingInternal(int val) { 1953 Settings.Global.putInt(mContext.getContentResolver(), 1954 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 1955 } 1956 1957 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 1958 synchronized (mLock) { 1959 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 1960 mDirty |= DIRTY_SETTINGS; 1961 updatePowerStateLocked(); 1962 } 1963 } 1964 1965 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 1966 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 1967 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 1968 } 1969 1970 private void setAttentionLightInternal(boolean on, int color) { 1971 Light light; 1972 synchronized (mLock) { 1973 if (!mSystemReady) { 1974 return; 1975 } 1976 light = mAttentionLight; 1977 } 1978 1979 // Control light outside of lock. 1980 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 1981 } 1982 1983 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 1984 synchronized (mLock) { 1985 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 1986 mScreenBrightnessOverrideFromWindowManager = brightness; 1987 mDirty |= DIRTY_SETTINGS; 1988 updatePowerStateLocked(); 1989 } 1990 } 1991 } 1992 1993 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 1994 synchronized (mLock) { 1995 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 1996 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 1997 mDirty |= DIRTY_SETTINGS; 1998 updatePowerStateLocked(); 1999 } 2000 } 2001 } 2002 2003 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2004 synchronized (mLock) { 2005 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2006 mTemporaryScreenBrightnessSettingOverride = brightness; 2007 mDirty |= DIRTY_SETTINGS; 2008 updatePowerStateLocked(); 2009 } 2010 } 2011 } 2012 2013 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2014 synchronized (mLock) { 2015 // Note: This condition handles NaN because NaN is not equal to any other 2016 // value, including itself. 2017 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2018 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2019 mDirty |= DIRTY_SETTINGS; 2020 updatePowerStateLocked(); 2021 } 2022 } 2023 } 2024 2025 private void powerHintInternal(int hintId, int data) { 2026 nativeSendPowerHint(hintId, data); 2027 } 2028 2029 /** 2030 * Low-level function turn the device off immediately, without trying 2031 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2032 */ 2033 public static void lowLevelShutdown() { 2034 SystemProperties.set("sys.powerctl", "shutdown"); 2035 } 2036 2037 /** 2038 * Low-level function to reboot the device. On success, this 2039 * function doesn't return. If more than 20 seconds passes from 2040 * the time a reboot is requested (120 seconds for reboot to 2041 * recovery), this method returns. 2042 * 2043 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2044 */ 2045 public static void lowLevelReboot(String reason) { 2046 if (reason == null) { 2047 reason = ""; 2048 } 2049 long duration; 2050 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2051 // If we are rebooting to go into recovery, instead of 2052 // setting sys.powerctl directly we'll start the 2053 // pre-recovery service which will do some preparation for 2054 // recovery and then reboot for us. 2055 // 2056 // This preparation can take more than 20 seconds if 2057 // there's a very large update package, so lengthen the 2058 // timeout. 2059 SystemProperties.set("ctl.start", "pre-recovery"); 2060 duration = 120 * 1000L; 2061 } else { 2062 SystemProperties.set("sys.powerctl", "reboot," + reason); 2063 duration = 20 * 1000L; 2064 } 2065 try { 2066 Thread.sleep(duration); 2067 } catch (InterruptedException e) { 2068 Thread.currentThread().interrupt(); 2069 } 2070 } 2071 2072 @Override // Watchdog.Monitor implementation 2073 public void monitor() { 2074 // Grab and release lock for watchdog monitor to detect deadlocks. 2075 synchronized (mLock) { 2076 } 2077 } 2078 2079 private void dumpInternal(PrintWriter pw) { 2080 pw.println("POWER MANAGER (dumpsys power)\n"); 2081 2082 final WirelessChargerDetector wcd; 2083 synchronized (mLock) { 2084 pw.println("Power Manager State:"); 2085 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2086 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2087 pw.println(" mInteractive=" + mInteractive); 2088 pw.println(" mIsPowered=" + mIsPowered); 2089 pw.println(" mPlugType=" + mPlugType); 2090 pw.println(" mBatteryLevel=" + mBatteryLevel); 2091 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2092 pw.println(" mDockState=" + mDockState); 2093 pw.println(" mStayOn=" + mStayOn); 2094 pw.println(" mProximityPositive=" + mProximityPositive); 2095 pw.println(" mBootCompleted=" + mBootCompleted); 2096 pw.println(" mSystemReady=" + mSystemReady); 2097 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2098 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2099 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2100 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2101 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2102 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2103 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2104 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2105 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2106 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2107 pw.println(" mLastUserActivityTimeNoChangeLights=" 2108 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2109 pw.println(" mDisplayReady=" + mDisplayReady); 2110 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2111 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2112 2113 pw.println(); 2114 pw.println("Settings and Configuration:"); 2115 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2116 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2117 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2118 + mDecoupleHalInteractiveModeFromDisplayConfig); 2119 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2120 + mWakeUpWhenPluggedOrUnpluggedConfig); 2121 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2122 + mSuspendWhenScreenOffDueToProximityConfig); 2123 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2124 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2125 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2126 + mDreamsActivatedOnSleepByDefaultConfig); 2127 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2128 + mDreamsActivatedOnDockByDefaultConfig); 2129 pw.println(" mDreamsEnabledOnBatteryConfig=" 2130 + mDreamsEnabledOnBatteryConfig); 2131 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2132 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2133 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2134 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2135 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2136 + mDreamsBatteryLevelDrainCutoffConfig); 2137 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2138 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2139 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2140 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2141 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2142 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2143 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2144 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2145 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2146 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2147 + mScreenAutoBrightnessAdjustmentSetting); 2148 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2149 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2150 + mScreenBrightnessOverrideFromWindowManager); 2151 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2152 + mUserActivityTimeoutOverrideFromWindowManager); 2153 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2154 + mTemporaryScreenBrightnessSettingOverride); 2155 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2156 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2157 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2158 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2159 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2160 2161 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2162 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2163 pw.println(); 2164 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2165 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2166 2167 pw.println(); 2168 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2169 for (WakeLock wl : mWakeLocks) { 2170 pw.println(" " + wl); 2171 } 2172 2173 pw.println(); 2174 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2175 for (SuspendBlocker sb : mSuspendBlockers) { 2176 pw.println(" " + sb); 2177 } 2178 2179 pw.println(); 2180 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2181 2182 pw.println(); 2183 pw.println("Display Power: " + mDisplayPowerCallbacks); 2184 2185 wcd = mWirelessChargerDetector; 2186 } 2187 2188 if (wcd != null) { 2189 wcd.dump(pw); 2190 } 2191 } 2192 2193 private SuspendBlocker createSuspendBlockerLocked(String name) { 2194 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2195 mSuspendBlockers.add(suspendBlocker); 2196 return suspendBlocker; 2197 } 2198 2199 private static String wakefulnessToString(int wakefulness) { 2200 switch (wakefulness) { 2201 case WAKEFULNESS_ASLEEP: 2202 return "Asleep"; 2203 case WAKEFULNESS_AWAKE: 2204 return "Awake"; 2205 case WAKEFULNESS_DREAMING: 2206 return "Dreaming"; 2207 case WAKEFULNESS_DOZING: 2208 return "Dozing"; 2209 default: 2210 return Integer.toString(wakefulness); 2211 } 2212 } 2213 2214 private static WorkSource copyWorkSource(WorkSource workSource) { 2215 return workSource != null ? new WorkSource(workSource) : null; 2216 } 2217 2218 private final class BatteryReceiver extends BroadcastReceiver { 2219 @Override 2220 public void onReceive(Context context, Intent intent) { 2221 synchronized (mLock) { 2222 handleBatteryStateChangedLocked(); 2223 } 2224 } 2225 } 2226 2227 private final class BootCompletedReceiver extends BroadcastReceiver { 2228 @Override 2229 public void onReceive(Context context, Intent intent) { 2230 // This is our early signal that the system thinks it has finished booting. 2231 // However, the boot animation may still be running for a few more seconds 2232 // since it is ultimately in charge of when it terminates. 2233 // Defer transitioning into the boot completed state until the animation exits. 2234 // We do this so that the screen does not start to dim prematurely before 2235 // the user has actually had a chance to interact with the device. 2236 startWatchingForBootAnimationFinished(); 2237 } 2238 } 2239 2240 private final class DreamReceiver extends BroadcastReceiver { 2241 @Override 2242 public void onReceive(Context context, Intent intent) { 2243 synchronized (mLock) { 2244 scheduleSandmanLocked(); 2245 } 2246 } 2247 } 2248 2249 private final class UserSwitchedReceiver extends BroadcastReceiver { 2250 @Override 2251 public void onReceive(Context context, Intent intent) { 2252 synchronized (mLock) { 2253 handleSettingsChangedLocked(); 2254 } 2255 } 2256 } 2257 2258 private final class DockReceiver extends BroadcastReceiver { 2259 @Override 2260 public void onReceive(Context context, Intent intent) { 2261 synchronized (mLock) { 2262 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2263 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2264 if (mDockState != dockState) { 2265 mDockState = dockState; 2266 mDirty |= DIRTY_DOCK_STATE; 2267 updatePowerStateLocked(); 2268 } 2269 } 2270 } 2271 } 2272 2273 private final class SettingsObserver extends ContentObserver { 2274 public SettingsObserver(Handler handler) { 2275 super(handler); 2276 } 2277 2278 @Override 2279 public void onChange(boolean selfChange, Uri uri) { 2280 synchronized (mLock) { 2281 handleSettingsChangedLocked(); 2282 } 2283 } 2284 } 2285 2286 /** 2287 * Handler for asynchronous operations performed by the power manager. 2288 */ 2289 private final class PowerManagerHandler extends Handler { 2290 public PowerManagerHandler(Looper looper) { 2291 super(looper, null, true /*async*/); 2292 } 2293 2294 @Override 2295 public void handleMessage(Message msg) { 2296 switch (msg.what) { 2297 case MSG_USER_ACTIVITY_TIMEOUT: 2298 handleUserActivityTimeout(); 2299 break; 2300 case MSG_SANDMAN: 2301 handleSandman(); 2302 break; 2303 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2304 handleScreenOnBlockerReleased(); 2305 break; 2306 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2307 checkIfBootAnimationFinished(); 2308 break; 2309 } 2310 } 2311 } 2312 2313 /** 2314 * Represents a wake lock that has been acquired by an application. 2315 */ 2316 private final class WakeLock implements IBinder.DeathRecipient { 2317 public final IBinder mLock; 2318 public int mFlags; 2319 public String mTag; 2320 public final String mPackageName; 2321 public WorkSource mWorkSource; 2322 public String mHistoryTag; 2323 public final int mOwnerUid; 2324 public final int mOwnerPid; 2325 public boolean mNotifiedAcquired; 2326 2327 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2328 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2329 mLock = lock; 2330 mFlags = flags; 2331 mTag = tag; 2332 mPackageName = packageName; 2333 mWorkSource = copyWorkSource(workSource); 2334 mHistoryTag = historyTag; 2335 mOwnerUid = ownerUid; 2336 mOwnerPid = ownerPid; 2337 } 2338 2339 @Override 2340 public void binderDied() { 2341 PowerManagerService.this.handleWakeLockDeath(this); 2342 } 2343 2344 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2345 int ownerUid, int ownerPid) { 2346 return mFlags == flags 2347 && mTag.equals(tag) 2348 && hasSameWorkSource(workSource) 2349 && mOwnerUid == ownerUid 2350 && mOwnerPid == ownerPid; 2351 } 2352 2353 public void updateProperties(int flags, String tag, String packageName, 2354 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2355 if (!mPackageName.equals(packageName)) { 2356 throw new IllegalStateException("Existing wake lock package name changed: " 2357 + mPackageName + " to " + packageName); 2358 } 2359 if (mOwnerUid != ownerUid) { 2360 throw new IllegalStateException("Existing wake lock uid changed: " 2361 + mOwnerUid + " to " + ownerUid); 2362 } 2363 if (mOwnerPid != ownerPid) { 2364 throw new IllegalStateException("Existing wake lock pid changed: " 2365 + mOwnerPid + " to " + ownerPid); 2366 } 2367 mFlags = flags; 2368 mTag = tag; 2369 updateWorkSource(workSource); 2370 mHistoryTag = historyTag; 2371 } 2372 2373 public boolean hasSameWorkSource(WorkSource workSource) { 2374 return Objects.equal(mWorkSource, workSource); 2375 } 2376 2377 public void updateWorkSource(WorkSource workSource) { 2378 mWorkSource = copyWorkSource(workSource); 2379 } 2380 2381 @Override 2382 public String toString() { 2383 return getLockLevelString() 2384 + " '" + mTag + "'" + getLockFlagsString() 2385 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2386 } 2387 2388 @SuppressWarnings("deprecation") 2389 private String getLockLevelString() { 2390 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2391 case PowerManager.FULL_WAKE_LOCK: 2392 return "FULL_WAKE_LOCK "; 2393 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2394 return "SCREEN_BRIGHT_WAKE_LOCK "; 2395 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2396 return "SCREEN_DIM_WAKE_LOCK "; 2397 case PowerManager.PARTIAL_WAKE_LOCK: 2398 return "PARTIAL_WAKE_LOCK "; 2399 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2400 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2401 case PowerManager.DOZE_WAKE_LOCK: 2402 return "DOZE_WAKE_LOCK "; 2403 default: 2404 return "??? "; 2405 } 2406 } 2407 2408 private String getLockFlagsString() { 2409 String result = ""; 2410 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2411 result += " ACQUIRE_CAUSES_WAKEUP"; 2412 } 2413 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2414 result += " ON_AFTER_RELEASE"; 2415 } 2416 return result; 2417 } 2418 } 2419 2420 private final class SuspendBlockerImpl implements SuspendBlocker { 2421 private final String mName; 2422 private int mReferenceCount; 2423 2424 public SuspendBlockerImpl(String name) { 2425 mName = name; 2426 } 2427 2428 @Override 2429 protected void finalize() throws Throwable { 2430 try { 2431 if (mReferenceCount != 0) { 2432 Log.wtf(TAG, "Suspend blocker \"" + mName 2433 + "\" was finalized without being released!"); 2434 mReferenceCount = 0; 2435 nativeReleaseSuspendBlocker(mName); 2436 } 2437 } finally { 2438 super.finalize(); 2439 } 2440 } 2441 2442 @Override 2443 public void acquire() { 2444 synchronized (this) { 2445 mReferenceCount += 1; 2446 if (mReferenceCount == 1) { 2447 if (DEBUG_SPEW) { 2448 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2449 } 2450 nativeAcquireSuspendBlocker(mName); 2451 } 2452 } 2453 } 2454 2455 @Override 2456 public void release() { 2457 synchronized (this) { 2458 mReferenceCount -= 1; 2459 if (mReferenceCount == 0) { 2460 if (DEBUG_SPEW) { 2461 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2462 } 2463 nativeReleaseSuspendBlocker(mName); 2464 } else if (mReferenceCount < 0) { 2465 Log.wtf(TAG, "Suspend blocker \"" + mName 2466 + "\" was released without being acquired!", new Throwable()); 2467 mReferenceCount = 0; 2468 } 2469 } 2470 } 2471 2472 @Override 2473 public String toString() { 2474 synchronized (this) { 2475 return mName + ": ref count=" + mReferenceCount; 2476 } 2477 } 2478 } 2479 2480 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2481 private int mNestCount; 2482 2483 public boolean isHeld() { 2484 synchronized (this) { 2485 return mNestCount != 0; 2486 } 2487 } 2488 2489 @Override 2490 public void acquire() { 2491 synchronized (this) { 2492 mNestCount += 1; 2493 if (DEBUG) { 2494 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2495 } 2496 } 2497 } 2498 2499 @Override 2500 public void release() { 2501 synchronized (this) { 2502 mNestCount -= 1; 2503 if (mNestCount < 0) { 2504 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2505 new Throwable()); 2506 mNestCount = 0; 2507 } 2508 if (mNestCount == 0) { 2509 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2510 } 2511 if (DEBUG) { 2512 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2513 } 2514 } 2515 } 2516 2517 @Override 2518 public String toString() { 2519 synchronized (this) { 2520 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2521 } 2522 } 2523 } 2524 2525 private final class BinderService extends IPowerManager.Stub { 2526 @Override // Binder call 2527 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2528 String packageName, int uid) { 2529 if (uid < 0) { 2530 uid = Binder.getCallingUid(); 2531 } 2532 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2533 } 2534 2535 @Override // Binder call 2536 public void powerHint(int hintId, int data) { 2537 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2538 powerHintInternal(hintId, data); 2539 } 2540 2541 @Override // Binder call 2542 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2543 WorkSource ws, String historyTag) { 2544 if (lock == null) { 2545 throw new IllegalArgumentException("lock must not be null"); 2546 } 2547 if (packageName == null) { 2548 throw new IllegalArgumentException("packageName must not be null"); 2549 } 2550 PowerManager.validateWakeLockParameters(flags, tag); 2551 2552 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2553 if (ws != null && ws.size() != 0) { 2554 mContext.enforceCallingOrSelfPermission( 2555 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2556 } else { 2557 ws = null; 2558 } 2559 2560 final int uid = Binder.getCallingUid(); 2561 final int pid = Binder.getCallingPid(); 2562 final long ident = Binder.clearCallingIdentity(); 2563 try { 2564 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2565 } finally { 2566 Binder.restoreCallingIdentity(ident); 2567 } 2568 } 2569 2570 @Override // Binder call 2571 public void releaseWakeLock(IBinder lock, int flags) { 2572 if (lock == null) { 2573 throw new IllegalArgumentException("lock must not be null"); 2574 } 2575 2576 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2577 2578 final long ident = Binder.clearCallingIdentity(); 2579 try { 2580 releaseWakeLockInternal(lock, flags); 2581 } finally { 2582 Binder.restoreCallingIdentity(ident); 2583 } 2584 } 2585 2586 @Override // Binder call 2587 public void updateWakeLockUids(IBinder lock, int[] uids) { 2588 WorkSource ws = null; 2589 2590 if (uids != null) { 2591 ws = new WorkSource(); 2592 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2593 // one at a time? 2594 for (int i = 0; i < uids.length; i++) { 2595 ws.add(uids[i]); 2596 } 2597 } 2598 updateWakeLockWorkSource(lock, ws, null); 2599 } 2600 2601 @Override // Binder call 2602 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2603 if (lock == null) { 2604 throw new IllegalArgumentException("lock must not be null"); 2605 } 2606 2607 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2608 if (ws != null && ws.size() != 0) { 2609 mContext.enforceCallingOrSelfPermission( 2610 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2611 } else { 2612 ws = null; 2613 } 2614 2615 final long ident = Binder.clearCallingIdentity(); 2616 try { 2617 updateWakeLockWorkSourceInternal(lock, ws, historyTag); 2618 } finally { 2619 Binder.restoreCallingIdentity(ident); 2620 } 2621 } 2622 2623 @Override // Binder call 2624 public boolean isWakeLockLevelSupported(int level) { 2625 final long ident = Binder.clearCallingIdentity(); 2626 try { 2627 return isWakeLockLevelSupportedInternal(level); 2628 } finally { 2629 Binder.restoreCallingIdentity(ident); 2630 } 2631 } 2632 2633 @Override // Binder call 2634 public void userActivity(long eventTime, int event, int flags) { 2635 final long now = SystemClock.uptimeMillis(); 2636 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2637 != PackageManager.PERMISSION_GRANTED) { 2638 // Once upon a time applications could call userActivity(). 2639 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2640 // request instead of throwing a SecurityException so we don't break old apps. 2641 synchronized (mLock) { 2642 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2643 mLastWarningAboutUserActivityPermission = now; 2644 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2645 + "caller does not have DEVICE_POWER permission. " 2646 + "Please fix your app! " 2647 + " pid=" + Binder.getCallingPid() 2648 + " uid=" + Binder.getCallingUid()); 2649 } 2650 } 2651 return; 2652 } 2653 2654 if (eventTime > SystemClock.uptimeMillis()) { 2655 throw new IllegalArgumentException("event time must not be in the future"); 2656 } 2657 2658 final int uid = Binder.getCallingUid(); 2659 final long ident = Binder.clearCallingIdentity(); 2660 try { 2661 userActivityInternal(eventTime, event, flags, uid); 2662 } finally { 2663 Binder.restoreCallingIdentity(ident); 2664 } 2665 } 2666 2667 @Override // Binder call 2668 public void wakeUp(long eventTime) { 2669 if (eventTime > SystemClock.uptimeMillis()) { 2670 throw new IllegalArgumentException("event time must not be in the future"); 2671 } 2672 2673 mContext.enforceCallingOrSelfPermission( 2674 android.Manifest.permission.DEVICE_POWER, null); 2675 2676 final long ident = Binder.clearCallingIdentity(); 2677 try { 2678 wakeUpInternal(eventTime); 2679 } finally { 2680 Binder.restoreCallingIdentity(ident); 2681 } 2682 } 2683 2684 @Override // Binder call 2685 public void goToSleep(long eventTime, int reason) { 2686 if (eventTime > SystemClock.uptimeMillis()) { 2687 throw new IllegalArgumentException("event time must not be in the future"); 2688 } 2689 2690 mContext.enforceCallingOrSelfPermission( 2691 android.Manifest.permission.DEVICE_POWER, null); 2692 2693 final long ident = Binder.clearCallingIdentity(); 2694 try { 2695 goToSleepInternal(eventTime, reason); 2696 } finally { 2697 Binder.restoreCallingIdentity(ident); 2698 } 2699 } 2700 2701 @Override // Binder call 2702 public void nap(long eventTime) { 2703 if (eventTime > SystemClock.uptimeMillis()) { 2704 throw new IllegalArgumentException("event time must not be in the future"); 2705 } 2706 2707 mContext.enforceCallingOrSelfPermission( 2708 android.Manifest.permission.DEVICE_POWER, null); 2709 2710 final long ident = Binder.clearCallingIdentity(); 2711 try { 2712 napInternal(eventTime); 2713 } finally { 2714 Binder.restoreCallingIdentity(ident); 2715 } 2716 } 2717 2718 @Override // Binder call 2719 public boolean isInteractive() { 2720 final long ident = Binder.clearCallingIdentity(); 2721 try { 2722 return isInteractiveInternal(); 2723 } finally { 2724 Binder.restoreCallingIdentity(ident); 2725 } 2726 } 2727 2728 /** 2729 * Reboots the device. 2730 * 2731 * @param confirm If true, shows a reboot confirmation dialog. 2732 * @param reason The reason for the reboot, or null if none. 2733 * @param wait If true, this call waits for the reboot to complete and does not return. 2734 */ 2735 @Override // Binder call 2736 public void reboot(boolean confirm, String reason, boolean wait) { 2737 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2738 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2739 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2740 } 2741 2742 final long ident = Binder.clearCallingIdentity(); 2743 try { 2744 shutdownOrRebootInternal(false, confirm, reason, wait); 2745 } finally { 2746 Binder.restoreCallingIdentity(ident); 2747 } 2748 } 2749 2750 /** 2751 * Shuts down the device. 2752 * 2753 * @param confirm If true, shows a shutdown confirmation dialog. 2754 * @param wait If true, this call waits for the shutdown to complete and does not return. 2755 */ 2756 @Override // Binder call 2757 public void shutdown(boolean confirm, boolean wait) { 2758 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2759 2760 final long ident = Binder.clearCallingIdentity(); 2761 try { 2762 shutdownOrRebootInternal(true, confirm, null, wait); 2763 } finally { 2764 Binder.restoreCallingIdentity(ident); 2765 } 2766 } 2767 2768 /** 2769 * Crash the runtime (causing a complete restart of the Android framework). 2770 * Requires REBOOT permission. Mostly for testing. Should not return. 2771 */ 2772 @Override // Binder call 2773 public void crash(String message) { 2774 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2775 2776 final long ident = Binder.clearCallingIdentity(); 2777 try { 2778 crashInternal(message); 2779 } finally { 2780 Binder.restoreCallingIdentity(ident); 2781 } 2782 } 2783 2784 /** 2785 * Set the setting that determines whether the device stays on when plugged in. 2786 * The argument is a bit string, with each bit specifying a power source that, 2787 * when the device is connected to that source, causes the device to stay on. 2788 * See {@link android.os.BatteryManager} for the list of power sources that 2789 * can be specified. Current values include 2790 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2791 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2792 * 2793 * Used by "adb shell svc power stayon ..." 2794 * 2795 * @param val an {@code int} containing the bits that specify which power sources 2796 * should cause the device to stay on. 2797 */ 2798 @Override // Binder call 2799 public void setStayOnSetting(int val) { 2800 mContext.enforceCallingOrSelfPermission( 2801 android.Manifest.permission.WRITE_SETTINGS, null); 2802 2803 final long ident = Binder.clearCallingIdentity(); 2804 try { 2805 setStayOnSettingInternal(val); 2806 } finally { 2807 Binder.restoreCallingIdentity(ident); 2808 } 2809 } 2810 2811 /** 2812 * Used by device administration to set the maximum screen off timeout. 2813 * 2814 * This method must only be called by the device administration policy manager. 2815 */ 2816 @Override // Binder call 2817 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2818 final long ident = Binder.clearCallingIdentity(); 2819 try { 2820 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2821 } finally { 2822 Binder.restoreCallingIdentity(ident); 2823 } 2824 } 2825 2826 /** 2827 * Used by the settings application and brightness control widgets to 2828 * temporarily override the current screen brightness setting so that the 2829 * user can observe the effect of an intended settings change without applying 2830 * it immediately. 2831 * 2832 * The override will be canceled when the setting value is next updated. 2833 * 2834 * @param brightness The overridden brightness. 2835 * 2836 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2837 */ 2838 @Override // Binder call 2839 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2840 mContext.enforceCallingOrSelfPermission( 2841 android.Manifest.permission.DEVICE_POWER, null); 2842 2843 final long ident = Binder.clearCallingIdentity(); 2844 try { 2845 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2846 } finally { 2847 Binder.restoreCallingIdentity(ident); 2848 } 2849 } 2850 2851 /** 2852 * Used by the settings application and brightness control widgets to 2853 * temporarily override the current screen auto-brightness adjustment setting so that the 2854 * user can observe the effect of an intended settings change without applying 2855 * it immediately. 2856 * 2857 * The override will be canceled when the setting value is next updated. 2858 * 2859 * @param adj The overridden brightness, or Float.NaN to disable the override. 2860 * 2861 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2862 */ 2863 @Override // Binder call 2864 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2865 mContext.enforceCallingOrSelfPermission( 2866 android.Manifest.permission.DEVICE_POWER, null); 2867 2868 final long ident = Binder.clearCallingIdentity(); 2869 try { 2870 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2871 } finally { 2872 Binder.restoreCallingIdentity(ident); 2873 } 2874 } 2875 2876 /** 2877 * Used by the phone application to make the attention LED flash when ringing. 2878 */ 2879 @Override // Binder call 2880 public void setAttentionLight(boolean on, int color) { 2881 mContext.enforceCallingOrSelfPermission( 2882 android.Manifest.permission.DEVICE_POWER, null); 2883 2884 final long ident = Binder.clearCallingIdentity(); 2885 try { 2886 setAttentionLightInternal(on, color); 2887 } finally { 2888 Binder.restoreCallingIdentity(ident); 2889 } 2890 } 2891 2892 @Override // Binder call 2893 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2894 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2895 != PackageManager.PERMISSION_GRANTED) { 2896 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2897 + Binder.getCallingPid() 2898 + ", uid=" + Binder.getCallingUid()); 2899 return; 2900 } 2901 2902 final long ident = Binder.clearCallingIdentity(); 2903 try { 2904 dumpInternal(pw); 2905 } finally { 2906 Binder.restoreCallingIdentity(ident); 2907 } 2908 } 2909 } 2910 2911 private final class LocalService extends PowerManagerInternal { 2912 /** 2913 * Used by the window manager to override the screen brightness based on the 2914 * current foreground activity. 2915 * 2916 * This method must only be called by the window manager. 2917 * 2918 * @param brightness The overridden brightness, or -1 to disable the override. 2919 */ 2920 @Override 2921 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 2922 mContext.enforceCallingOrSelfPermission( 2923 android.Manifest.permission.DEVICE_POWER, null); 2924 2925 final long ident = Binder.clearCallingIdentity(); 2926 try { 2927 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 2928 } finally { 2929 Binder.restoreCallingIdentity(ident); 2930 } 2931 } 2932 2933 /** 2934 * Used by the window manager to override the button brightness based on the 2935 * current foreground activity. 2936 * 2937 * This method must only be called by the window manager. 2938 * 2939 * @param brightness The overridden brightness, or -1 to disable the override. 2940 */ 2941 @Override 2942 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 2943 // Do nothing. 2944 // Button lights are not currently supported in the new implementation. 2945 mContext.enforceCallingOrSelfPermission( 2946 android.Manifest.permission.DEVICE_POWER, null); 2947 } 2948 2949 /** 2950 * Used by the window manager to override the user activity timeout based on the 2951 * current foreground activity. It can only be used to make the timeout shorter 2952 * than usual, not longer. 2953 * 2954 * This method must only be called by the window manager. 2955 * 2956 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 2957 */ 2958 @Override 2959 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 2960 mContext.enforceCallingOrSelfPermission( 2961 android.Manifest.permission.DEVICE_POWER, null); 2962 2963 final long ident = Binder.clearCallingIdentity(); 2964 try { 2965 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 2966 } finally { 2967 Binder.restoreCallingIdentity(ident); 2968 } 2969 } 2970 2971 @Override 2972 public void setPolicy(WindowManagerPolicy policy) { 2973 PowerManagerService.this.setPolicy(policy); 2974 } 2975 } 2976} 2977