PowerManagerService.java revision c12035cd40d01b032013f515cb509e6c8791cf65
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.power; 18 19import com.android.internal.app.IAppOpsService; 20import com.android.internal.app.IBatteryStats; 21import com.android.internal.os.BackgroundThread; 22import com.android.server.EventLogTags; 23import com.android.server.LocalServices; 24import com.android.server.ServiceThread; 25import com.android.server.am.BatteryStatsService; 26import com.android.server.lights.Light; 27import com.android.server.lights.LightsManager; 28import com.android.server.Watchdog; 29 30import android.Manifest; 31import android.content.BroadcastReceiver; 32import android.content.ContentResolver; 33import android.content.Context; 34import android.content.Intent; 35import android.content.IntentFilter; 36import android.content.pm.PackageManager; 37import android.content.res.Resources; 38import android.database.ContentObserver; 39import android.hardware.SensorManager; 40import android.hardware.SystemSensorManager; 41import android.hardware.display.DisplayManagerInternal; 42import android.hardware.display.DisplayManagerInternal.DisplayPowerRequest; 43import android.net.Uri; 44import android.os.BatteryManager; 45import android.os.BatteryManagerInternal; 46import android.os.Binder; 47import android.os.Handler; 48import android.os.IBinder; 49import android.os.IPowerManager; 50import android.os.Looper; 51import android.os.Message; 52import android.os.PowerManager; 53import android.os.PowerManagerInternal; 54import android.os.Process; 55import android.os.RemoteException; 56import android.os.SystemClock; 57import android.os.SystemProperties; 58import android.os.SystemService; 59import android.os.UserHandle; 60import android.os.WorkSource; 61import android.os.Parcel; 62import android.os.ServiceManager; 63import android.provider.Settings; 64import android.service.dreams.DreamManagerInternal; 65import android.util.EventLog; 66import android.util.Log; 67import android.util.Slog; 68import android.util.TimeUtils; 69import android.view.Display; 70import android.view.WindowManagerPolicy; 71 72import java.io.FileDescriptor; 73import java.io.PrintWriter; 74import java.util.ArrayList; 75 76import libcore.util.Objects; 77 78/** 79 * The power manager service is responsible for coordinating power management 80 * functions on the device. 81 */ 82public final class PowerManagerService extends com.android.server.SystemService 83 implements Watchdog.Monitor { 84 private static final String TAG = "PowerManagerService"; 85 86 private static final boolean DEBUG = false; 87 private static final boolean DEBUG_SPEW = DEBUG && true; 88 89 // Message: Sent when a user activity timeout occurs to update the power state. 90 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 91 // Message: Sent when the device enters or exits a dreaming or dozing state. 92 private static final int MSG_SANDMAN = 2; 93 // Message: Sent when the screen on blocker is released. 94 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 95 // Message: Sent to poll whether the boot animation has terminated. 96 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 97 98 // Dirty bit: mWakeLocks changed 99 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 100 // Dirty bit: mWakefulness changed 101 private static final int DIRTY_WAKEFULNESS = 1 << 1; 102 // Dirty bit: user activity was poked or may have timed out 103 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 104 // Dirty bit: actual display power state was updated asynchronously 105 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 106 // Dirty bit: mBootCompleted changed 107 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 108 // Dirty bit: settings changed 109 private static final int DIRTY_SETTINGS = 1 << 5; 110 // Dirty bit: mIsPowered changed 111 private static final int DIRTY_IS_POWERED = 1 << 6; 112 // Dirty bit: mStayOn changed 113 private static final int DIRTY_STAY_ON = 1 << 7; 114 // Dirty bit: battery state changed 115 private static final int DIRTY_BATTERY_STATE = 1 << 8; 116 // Dirty bit: proximity state changed 117 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 118 // Dirty bit: screen on blocker state became held or unheld 119 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 120 // Dirty bit: dock state changed 121 private static final int DIRTY_DOCK_STATE = 1 << 11; 122 123 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 124 // The screen should be off or in the process of being turned off by the display controller. 125 // The device typically passes through the dozing state first. 126 private static final int WAKEFULNESS_ASLEEP = 0; 127 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 128 // When the user activity timeout expires, the device may start dreaming or go to sleep. 129 private static final int WAKEFULNESS_AWAKE = 1; 130 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 131 // which ends the dream. The device goes to sleep when goToSleep() is called, when 132 // the dream ends or when unplugged. 133 // User activity may brighten the screen but does not end the dream. 134 private static final int WAKEFULNESS_DREAMING = 2; 135 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 136 // low-power "doze" dream to run which keeps the display on but lets the application 137 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 138 // The device fully goes to sleep if the dream cannot be started or ends on its own. 139 private static final int WAKEFULNESS_DOZING = 3; 140 141 // Summarizes the state of all active wakelocks. 142 private static final int WAKE_LOCK_CPU = 1 << 0; 143 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 144 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 145 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 146 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 147 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 148 private static final int WAKE_LOCK_DOZE = 1 << 6; 149 150 // Summarizes the user activity state. 151 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 152 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 153 154 // Default timeout in milliseconds. This is only used until the settings 155 // provider populates the actual default value (R.integer.def_screen_off_timeout). 156 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 157 158 // The name of the boot animation service in init.rc. 159 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 160 161 // Poll interval in milliseconds for watching boot animation finished. 162 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 163 164 // Used to send the hint to the PowerHAL indicating transitions 165 // from and to the low power mode. 166 private static final int POWER_HINT_LOW_POWER_MODE = 5; 167 168 private final Context mContext; 169 private final ServiceThread mHandlerThread; 170 private final PowerManagerHandler mHandler; 171 172 private LightsManager mLightsManager; 173 private BatteryManagerInternal mBatteryManagerInternal; 174 private DisplayManagerInternal mDisplayManagerInternal; 175 private IBatteryStats mBatteryStats; 176 private IAppOpsService mAppOps; 177 private WindowManagerPolicy mPolicy; 178 private Notifier mNotifier; 179 private WirelessChargerDetector mWirelessChargerDetector; 180 private SettingsObserver mSettingsObserver; 181 private DreamManagerInternal mDreamManager; 182 private Light mAttentionLight; 183 184 private final Object mLock = new Object(); 185 186 // A bitfield that indicates what parts of the power state have 187 // changed and need to be recalculated. 188 private int mDirty; 189 190 // Indicates whether the device is awake or asleep or somewhere in between. 191 // This is distinct from the screen power state, which is managed separately. 192 private int mWakefulness; 193 194 // True if the sandman has just been summoned for the first time since entering the 195 // dreaming or dozing state. Indicates whether a new dream should begin. 196 private boolean mSandmanSummoned; 197 198 // True if MSG_SANDMAN has been scheduled. 199 private boolean mSandmanScheduled; 200 201 // Table of all suspend blockers. 202 // There should only be a few of these. 203 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 204 205 // Table of all wake locks acquired by applications. 206 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 207 208 // A bitfield that summarizes the state of all active wakelocks. 209 private int mWakeLockSummary; 210 211 // True if the device is in an interactive state. 212 private boolean mInteractive; 213 private boolean mInteractiveChanging; 214 215 // If true, instructs the display controller to wait for the proximity sensor to 216 // go negative before turning the screen on. 217 private boolean mRequestWaitForNegativeProximity; 218 219 // Timestamp of the last time the device was awoken or put to sleep. 220 private long mLastWakeTime; 221 private long mLastSleepTime; 222 223 // Timestamp of the last call to user activity. 224 private long mLastUserActivityTime; 225 private long mLastUserActivityTimeNoChangeLights; 226 227 // A bitfield that summarizes the effect of the user activity timer. 228 // A zero value indicates that the user activity timer has expired. 229 private int mUserActivitySummary; 230 231 // The desired display power state. The actual state may lag behind the 232 // requested because it is updated asynchronously by the display power controller. 233 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 234 235 // True if the display power state has been fully applied, which means the display 236 // is actually on or actually off or whatever was requested. 237 private boolean mDisplayReady; 238 239 // The suspend blocker used to keep the CPU alive when an application has acquired 240 // a wake lock. 241 private final SuspendBlocker mWakeLockSuspendBlocker; 242 243 // True if the wake lock suspend blocker has been acquired. 244 private boolean mHoldingWakeLockSuspendBlocker; 245 246 // The suspend blocker used to keep the CPU alive when the display is on, the 247 // display is getting ready or there is user activity (in which case the display 248 // must be on). 249 private final SuspendBlocker mDisplaySuspendBlocker; 250 251 // True if the display suspend blocker has been acquired. 252 private boolean mHoldingDisplaySuspendBlocker; 253 254 // The screen on blocker used to keep the screen from turning on while the lock 255 // screen is coming up. 256 private final ScreenOnBlockerImpl mScreenOnBlocker; 257 258 // True if systemReady() has been called. 259 private boolean mSystemReady; 260 261 // True if boot completed occurred. We keep the screen on until this happens. 262 private boolean mBootCompleted; 263 264 // True if auto-suspend mode is enabled. 265 // Refer to autosuspend.h. 266 private boolean mHalAutoSuspendModeEnabled; 267 268 // True if interactive mode is enabled. 269 // Refer to power.h. 270 private boolean mHalInteractiveModeEnabled; 271 272 // True if the device is plugged into a power source. 273 private boolean mIsPowered; 274 275 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 276 private int mPlugType; 277 278 // The current battery level percentage. 279 private int mBatteryLevel; 280 281 // The battery level percentage at the time the dream started. 282 // This is used to terminate a dream and go to sleep if the battery is 283 // draining faster than it is charging and the user activity timeout has expired. 284 private int mBatteryLevelWhenDreamStarted; 285 286 // The current dock state. 287 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 288 289 // True to decouple auto-suspend mode from the display state. 290 private boolean mDecoupleHalAutoSuspendModeFromDisplayConfig; 291 292 // True to decouple interactive mode from the display state. 293 private boolean mDecoupleHalInteractiveModeFromDisplayConfig; 294 295 // True if the device should wake up when plugged or unplugged. 296 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 297 298 // True if the device should suspend when the screen is off due to proximity. 299 private boolean mSuspendWhenScreenOffDueToProximityConfig; 300 301 // True if dreams are supported on this device. 302 private boolean mDreamsSupportedConfig; 303 304 // Default value for dreams enabled 305 private boolean mDreamsEnabledByDefaultConfig; 306 307 // Default value for dreams activate-on-sleep 308 private boolean mDreamsActivatedOnSleepByDefaultConfig; 309 310 // Default value for dreams activate-on-dock 311 private boolean mDreamsActivatedOnDockByDefaultConfig; 312 313 // True if dreams can run while not plugged in. 314 private boolean mDreamsEnabledOnBatteryConfig; 315 316 // Minimum battery level to allow dreaming when powered. 317 // Use -1 to disable this safety feature. 318 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 319 320 // Minimum battery level to allow dreaming when not powered. 321 // Use -1 to disable this safety feature. 322 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 323 324 // If the battery level drops by this percentage and the user activity timeout 325 // has expired, then assume the device is receiving insufficient current to charge 326 // effectively and terminate the dream. Use -1 to disable this safety feature. 327 private int mDreamsBatteryLevelDrainCutoffConfig; 328 329 // True if dreams are enabled by the user. 330 private boolean mDreamsEnabledSetting; 331 332 // True if dreams should be activated on sleep. 333 private boolean mDreamsActivateOnSleepSetting; 334 335 // True if dreams should be activated on dock. 336 private boolean mDreamsActivateOnDockSetting; 337 338 // The minimum screen off timeout, in milliseconds. 339 private int mMinimumScreenOffTimeoutConfig; 340 341 // The screen dim duration, in milliseconds. 342 // This is subtracted from the end of the screen off timeout so the 343 // minimum screen off timeout should be longer than this. 344 private int mMaximumScreenDimDurationConfig; 345 346 // The maximum screen dim time expressed as a ratio relative to the screen 347 // off timeout. If the screen off timeout is very short then we want the 348 // dim timeout to also be quite short so that most of the time is spent on. 349 // Otherwise the user won't get much screen on time before dimming occurs. 350 private float mMaximumScreenDimRatioConfig; 351 352 // The screen off timeout setting value in milliseconds. 353 private int mScreenOffTimeoutSetting; 354 355 // The maximum allowable screen off timeout according to the device 356 // administration policy. Overrides other settings. 357 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 358 359 // The stay on while plugged in setting. 360 // A bitfield of battery conditions under which to make the screen stay on. 361 private int mStayOnWhilePluggedInSetting; 362 363 // True if the device should stay on. 364 private boolean mStayOn; 365 366 // True if the proximity sensor reads a positive result. 367 private boolean mProximityPositive; 368 369 // Screen brightness setting limits. 370 private int mScreenBrightnessSettingMinimum; 371 private int mScreenBrightnessSettingMaximum; 372 private int mScreenBrightnessSettingDefault; 373 374 // The screen brightness setting, from 0 to 255. 375 // Use -1 if no value has been set. 376 private int mScreenBrightnessSetting; 377 378 // The screen auto-brightness adjustment setting, from -1 to 1. 379 // Use 0 if there is no adjustment. 380 private float mScreenAutoBrightnessAdjustmentSetting; 381 382 // The screen brightness mode. 383 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 384 private int mScreenBrightnessModeSetting; 385 386 // The screen brightness setting override from the window manager 387 // to allow the current foreground activity to override the brightness. 388 // Use -1 to disable. 389 private int mScreenBrightnessOverrideFromWindowManager = -1; 390 391 // The user activity timeout override from the window manager 392 // to allow the current foreground activity to override the user activity timeout. 393 // Use -1 to disable. 394 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 395 396 // The screen brightness setting override from the settings application 397 // to temporarily adjust the brightness until next updated, 398 // Use -1 to disable. 399 private int mTemporaryScreenBrightnessSettingOverride = -1; 400 401 // The screen brightness adjustment setting override from the settings 402 // application to temporarily adjust the auto-brightness adjustment factor 403 // until next updated, in the range -1..1. 404 // Use NaN to disable. 405 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 406 407 // The screen state to use while dozing. 408 private int mDozeScreenStateOverrideFromDreamManager = Display.STATE_UNKNOWN; 409 410 // The screen brightness to use while dozing. 411 private int mDozeScreenBrightnessOverrideFromDreamManager = PowerManager.BRIGHTNESS_DEFAULT; 412 413 // Time when we last logged a warning about calling userActivity() without permission. 414 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 415 416 // If true, the device is in low power mode. 417 private boolean mLowPowerModeEnabled; 418 419 // Current state of the low power mode setting. 420 private boolean mLowPowerModeSetting; 421 422 // Current state of whether the settings are allowing auto low power mode. 423 private boolean mAutoLowPowerModeEnabled; 424 425 // The user turned off low power mode below the trigger level 426 private boolean mAutoLowPowerModeSnoozing; 427 428 // True if the battery level is currently considered low. 429 private boolean mBatteryLevelLow; 430 431 private final ArrayList<PowerManagerInternal.LowPowerModeListener> mLowPowerModeListeners 432 = new ArrayList<PowerManagerInternal.LowPowerModeListener>(); 433 434 private native void nativeInit(); 435 436 private static native void nativeAcquireSuspendBlocker(String name); 437 private static native void nativeReleaseSuspendBlocker(String name); 438 private static native void nativeSetInteractive(boolean enable); 439 private static native void nativeSetAutoSuspend(boolean enable); 440 private static native void nativeSendPowerHint(int hintId, int data); 441 442 public PowerManagerService(Context context) { 443 super(context); 444 mContext = context; 445 mHandlerThread = new ServiceThread(TAG, 446 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 447 mHandlerThread.start(); 448 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 449 450 synchronized (mLock) { 451 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 452 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 453 mDisplaySuspendBlocker.acquire(); 454 mHoldingDisplaySuspendBlocker = true; 455 mHalAutoSuspendModeEnabled = false; 456 mHalInteractiveModeEnabled = true; 457 458 mScreenOnBlocker = new ScreenOnBlockerImpl(); 459 mWakefulness = WAKEFULNESS_AWAKE; 460 mInteractive = true; 461 462 nativeInit(); 463 nativeSetAutoSuspend(false); 464 nativeSetInteractive(true); 465 } 466 } 467 468 @Override 469 public void onStart() { 470 publishBinderService(Context.POWER_SERVICE, new BinderService()); 471 publishLocalService(PowerManagerInternal.class, new LocalService()); 472 473 Watchdog.getInstance().addMonitor(this); 474 Watchdog.getInstance().addThread(mHandler); 475 } 476 477 @Override 478 public void onBootPhase(int phase) { 479 if (phase == PHASE_BOOT_COMPLETED) { 480 // This is our early signal that the system thinks it has finished booting. 481 // However, the boot animation may still be running for a few more seconds 482 // since it is ultimately in charge of when it terminates. 483 // Defer transitioning into the boot completed state until the animation exits. 484 // We do this so that the screen does not start to dim prematurely before 485 // the user has actually had a chance to interact with the device. 486 startWatchingForBootAnimationFinished(); 487 } 488 } 489 490 public void systemReady(IAppOpsService appOps) { 491 synchronized (mLock) { 492 mSystemReady = true; 493 mAppOps = appOps; 494 mDreamManager = getLocalService(DreamManagerInternal.class); 495 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 496 mPolicy = getLocalService(WindowManagerPolicy.class); 497 mBatteryManagerInternal = getLocalService(BatteryManagerInternal.class); 498 499 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 500 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 501 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 502 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 503 504 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 505 506 // The notifier runs on the system server's main looper so as not to interfere 507 // with the animations and other critical functions of the power manager. 508 mBatteryStats = BatteryStatsService.getService(); 509 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 510 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 511 mScreenOnBlocker, mPolicy); 512 513 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 514 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 515 mHandler); 516 mSettingsObserver = new SettingsObserver(mHandler); 517 518 mLightsManager = getLocalService(LightsManager.class); 519 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 520 521 // Initialize display power management. 522 mDisplayManagerInternal.initPowerManagement( 523 mDisplayPowerCallbacks, mHandler, sensorManager); 524 525 // Register for broadcasts from other components of the system. 526 IntentFilter filter = new IntentFilter(); 527 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 528 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 529 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 530 531 filter = new IntentFilter(); 532 filter.addAction(Intent.ACTION_DREAMING_STARTED); 533 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 534 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 535 536 filter = new IntentFilter(); 537 filter.addAction(Intent.ACTION_USER_SWITCHED); 538 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 539 540 filter = new IntentFilter(); 541 filter.addAction(Intent.ACTION_DOCK_EVENT); 542 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 543 544 // Register for settings changes. 545 final ContentResolver resolver = mContext.getContentResolver(); 546 resolver.registerContentObserver(Settings.Secure.getUriFor( 547 Settings.Secure.SCREENSAVER_ENABLED), 548 false, mSettingsObserver, UserHandle.USER_ALL); 549 resolver.registerContentObserver(Settings.Secure.getUriFor( 550 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 551 false, mSettingsObserver, UserHandle.USER_ALL); 552 resolver.registerContentObserver(Settings.Secure.getUriFor( 553 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 554 false, mSettingsObserver, UserHandle.USER_ALL); 555 resolver.registerContentObserver(Settings.System.getUriFor( 556 Settings.System.SCREEN_OFF_TIMEOUT), 557 false, mSettingsObserver, UserHandle.USER_ALL); 558 resolver.registerContentObserver(Settings.Global.getUriFor( 559 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 560 false, mSettingsObserver, UserHandle.USER_ALL); 561 resolver.registerContentObserver(Settings.System.getUriFor( 562 Settings.System.SCREEN_BRIGHTNESS), 563 false, mSettingsObserver, UserHandle.USER_ALL); 564 resolver.registerContentObserver(Settings.System.getUriFor( 565 Settings.System.SCREEN_BRIGHTNESS_MODE), 566 false, mSettingsObserver, UserHandle.USER_ALL); 567 resolver.registerContentObserver(Settings.System.getUriFor( 568 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ), 569 false, mSettingsObserver, UserHandle.USER_ALL); 570 resolver.registerContentObserver(Settings.Global.getUriFor( 571 Settings.Global.LOW_POWER_MODE), 572 false, mSettingsObserver, UserHandle.USER_ALL); 573 resolver.registerContentObserver(Settings.Global.getUriFor( 574 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL), 575 false, mSettingsObserver, UserHandle.USER_ALL); 576 // Go. 577 readConfigurationLocked(); 578 updateSettingsLocked(); 579 mDirty |= DIRTY_BATTERY_STATE; 580 updatePowerStateLocked(); 581 } 582 } 583 584 private void readConfigurationLocked() { 585 final Resources resources = mContext.getResources(); 586 587 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 588 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 589 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 590 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 591 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 592 com.android.internal.R.bool.config_unplugTurnsOnScreen); 593 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 594 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 595 mDreamsSupportedConfig = resources.getBoolean( 596 com.android.internal.R.bool.config_dreamsSupported); 597 mDreamsEnabledByDefaultConfig = resources.getBoolean( 598 com.android.internal.R.bool.config_dreamsEnabledByDefault); 599 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 600 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 601 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 602 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 603 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 604 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 605 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 606 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 607 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 608 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 609 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 610 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 611 mMinimumScreenOffTimeoutConfig = resources.getInteger( 612 com.android.internal.R.integer.config_minimumScreenOffTimeout); 613 mMaximumScreenDimDurationConfig = resources.getInteger( 614 com.android.internal.R.integer.config_maximumScreenDimDuration); 615 mMaximumScreenDimRatioConfig = resources.getFraction( 616 com.android.internal.R.fraction.config_maximumScreenDimRatio, 1, 1); 617 } 618 619 private void updateSettingsLocked() { 620 final ContentResolver resolver = mContext.getContentResolver(); 621 622 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 623 Settings.Secure.SCREENSAVER_ENABLED, 624 mDreamsEnabledByDefaultConfig ? 1 : 0, 625 UserHandle.USER_CURRENT) != 0); 626 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 627 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 628 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 629 UserHandle.USER_CURRENT) != 0); 630 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 631 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 632 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 633 UserHandle.USER_CURRENT) != 0); 634 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 635 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 636 UserHandle.USER_CURRENT); 637 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 638 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 639 640 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 641 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 642 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 643 UserHandle.USER_CURRENT); 644 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 645 mTemporaryScreenBrightnessSettingOverride = -1; 646 } 647 648 final float oldScreenAutoBrightnessAdjustmentSetting = 649 mScreenAutoBrightnessAdjustmentSetting; 650 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 651 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 652 UserHandle.USER_CURRENT); 653 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 654 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 655 } 656 657 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 658 Settings.System.SCREEN_BRIGHTNESS_MODE, 659 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 660 661 final boolean lowPowerModeEnabled = Settings.Global.getInt(resolver, 662 Settings.Global.LOW_POWER_MODE, 0) != 0; 663 final boolean autoLowPowerModeEnabled = Settings.Global.getInt(resolver, 664 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL, 0) != 0; 665 if (lowPowerModeEnabled != mLowPowerModeSetting 666 || autoLowPowerModeEnabled != mAutoLowPowerModeEnabled) { 667 if (lowPowerModeEnabled != mLowPowerModeSetting) { 668 if (!mAutoLowPowerModeSnoozing && !lowPowerModeEnabled && !mIsPowered 669 && mAutoLowPowerModeEnabled) { 670 if (DEBUG_SPEW) { 671 Slog.d(TAG, "updateSettingsLocked: snoozing low power mode"); 672 } 673 mAutoLowPowerModeSnoozing = true; 674 } else if (mAutoLowPowerModeSnoozing && lowPowerModeEnabled) { 675 if (DEBUG_SPEW) { 676 Slog.d(TAG, "updateSettingsLocked: no longer snoozing low power mode"); 677 } 678 mAutoLowPowerModeSnoozing = true; 679 } 680 } 681 mLowPowerModeSetting = lowPowerModeEnabled; 682 mAutoLowPowerModeEnabled = autoLowPowerModeEnabled; 683 updateLowPowerModeLocked(); 684 } 685 686 mDirty |= DIRTY_SETTINGS; 687 } 688 689 void updateLowPowerModeLocked() { 690 if (mIsPowered && mLowPowerModeSetting) { 691 if (DEBUG_SPEW) { 692 Slog.d(TAG, "updateLowPowerModeLocked: powered, turning setting off"); 693 } 694 // Turn setting off if powered 695 Settings.Global.putInt(mContext.getContentResolver(), 696 Settings.Global.LOW_POWER_MODE, 0); 697 mLowPowerModeSetting = false; 698 } else if (!mIsPowered && mAutoLowPowerModeEnabled && !mAutoLowPowerModeSnoozing 699 && mBatteryLevelLow && !mLowPowerModeSetting) { 700 if (DEBUG_SPEW) { 701 Slog.d(TAG, "updateLowPowerModeLocked: trigger level reached, turning setting on"); 702 } 703 // Turn setting on if trigger level is enabled, and we're now below it 704 Settings.Global.putInt(mContext.getContentResolver(), 705 Settings.Global.LOW_POWER_MODE, 1); 706 mLowPowerModeSetting = true; 707 } 708 final boolean lowPowerModeEnabled = mLowPowerModeSetting; 709 if (mLowPowerModeEnabled != lowPowerModeEnabled) { 710 mLowPowerModeEnabled = lowPowerModeEnabled; 711 powerHintInternal(POWER_HINT_LOW_POWER_MODE, lowPowerModeEnabled ? 1 : 0); 712 setSurfaceFlingerLowPowerMode(lowPowerModeEnabled ? 1 : 0); 713 mLowPowerModeEnabled = lowPowerModeEnabled; 714 BackgroundThread.getHandler().post(new Runnable() { 715 @Override 716 public void run() { 717 Intent intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGING) 718 .putExtra(PowerManager.EXTRA_POWER_SAVE_MODE, mLowPowerModeEnabled) 719 .addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 720 mContext.sendBroadcast(intent); 721 ArrayList<PowerManagerInternal.LowPowerModeListener> listeners; 722 synchronized (mLock) { 723 listeners = new ArrayList<PowerManagerInternal.LowPowerModeListener>( 724 mLowPowerModeListeners); 725 } 726 for (int i=0; i<listeners.size(); i++) { 727 listeners.get(i).onLowPowerModeChanged(lowPowerModeEnabled); 728 } 729 intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED); 730 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 731 mContext.sendBroadcast(intent); 732 } 733 }); 734 } 735 } 736 737 private void handleSettingsChangedLocked() { 738 updateSettingsLocked(); 739 updatePowerStateLocked(); 740 } 741 742 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 743 WorkSource ws, String historyTag, int uid, int pid) { 744 synchronized (mLock) { 745 if (DEBUG_SPEW) { 746 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 747 + ", flags=0x" + Integer.toHexString(flags) 748 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 749 } 750 751 WakeLock wakeLock; 752 int index = findWakeLockIndexLocked(lock); 753 boolean notifyAcquire; 754 if (index >= 0) { 755 wakeLock = mWakeLocks.get(index); 756 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 757 // Update existing wake lock. This shouldn't happen but is harmless. 758 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 759 uid, pid, ws, historyTag); 760 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 761 } 762 notifyAcquire = false; 763 } else { 764 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 765 try { 766 lock.linkToDeath(wakeLock, 0); 767 } catch (RemoteException ex) { 768 throw new IllegalArgumentException("Wake lock is already dead."); 769 } 770 mWakeLocks.add(wakeLock); 771 notifyAcquire = true; 772 } 773 774 applyWakeLockFlagsOnAcquireLocked(wakeLock, uid); 775 mDirty |= DIRTY_WAKE_LOCKS; 776 updatePowerStateLocked(); 777 if (notifyAcquire) { 778 // This needs to be done last so we are sure we have acquired the 779 // kernel wake lock. Otherwise we have a race where the system may 780 // go to sleep between the time we start the accounting in battery 781 // stats and when we actually get around to telling the kernel to 782 // stay awake. 783 notifyWakeLockAcquiredLocked(wakeLock); 784 } 785 } 786 } 787 788 @SuppressWarnings("deprecation") 789 private static boolean isScreenLock(final WakeLock wakeLock) { 790 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 791 case PowerManager.FULL_WAKE_LOCK: 792 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 793 case PowerManager.SCREEN_DIM_WAKE_LOCK: 794 return true; 795 } 796 return false; 797 } 798 799 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock, int uid) { 800 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 801 && isScreenLock(wakeLock)) { 802 wakeUpNoUpdateLocked(SystemClock.uptimeMillis(), uid); 803 } 804 } 805 806 private void releaseWakeLockInternal(IBinder lock, int flags) { 807 synchronized (mLock) { 808 int index = findWakeLockIndexLocked(lock); 809 if (index < 0) { 810 if (DEBUG_SPEW) { 811 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 812 + " [not found], flags=0x" + Integer.toHexString(flags)); 813 } 814 return; 815 } 816 817 WakeLock wakeLock = mWakeLocks.get(index); 818 if (DEBUG_SPEW) { 819 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 820 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 821 } 822 823 mWakeLocks.remove(index); 824 notifyWakeLockReleasedLocked(wakeLock); 825 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 826 827 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 828 mRequestWaitForNegativeProximity = true; 829 } 830 831 applyWakeLockFlagsOnReleaseLocked(wakeLock); 832 mDirty |= DIRTY_WAKE_LOCKS; 833 updatePowerStateLocked(); 834 } 835 } 836 837 private void handleWakeLockDeath(WakeLock wakeLock) { 838 synchronized (mLock) { 839 if (DEBUG_SPEW) { 840 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 841 + " [" + wakeLock.mTag + "]"); 842 } 843 844 int index = mWakeLocks.indexOf(wakeLock); 845 if (index < 0) { 846 return; 847 } 848 849 mWakeLocks.remove(index); 850 notifyWakeLockReleasedLocked(wakeLock); 851 852 applyWakeLockFlagsOnReleaseLocked(wakeLock); 853 mDirty |= DIRTY_WAKE_LOCKS; 854 updatePowerStateLocked(); 855 } 856 } 857 858 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 859 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 860 && isScreenLock(wakeLock)) { 861 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 862 PowerManager.USER_ACTIVITY_EVENT_OTHER, 863 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 864 wakeLock.mOwnerUid); 865 } 866 } 867 868 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag) { 869 synchronized (mLock) { 870 int index = findWakeLockIndexLocked(lock); 871 if (index < 0) { 872 if (DEBUG_SPEW) { 873 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 874 + " [not found], ws=" + ws); 875 } 876 throw new IllegalArgumentException("Wake lock not active"); 877 } 878 879 WakeLock wakeLock = mWakeLocks.get(index); 880 if (DEBUG_SPEW) { 881 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 882 + " [" + wakeLock.mTag + "], ws=" + ws); 883 } 884 885 if (!wakeLock.hasSameWorkSource(ws)) { 886 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 887 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 888 ws, historyTag); 889 wakeLock.mHistoryTag = historyTag; 890 wakeLock.updateWorkSource(ws); 891 } 892 } 893 } 894 895 private int findWakeLockIndexLocked(IBinder lock) { 896 final int count = mWakeLocks.size(); 897 for (int i = 0; i < count; i++) { 898 if (mWakeLocks.get(i).mLock == lock) { 899 return i; 900 } 901 } 902 return -1; 903 } 904 905 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 906 if (mSystemReady) { 907 wakeLock.mNotifiedAcquired = true; 908 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 909 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 910 wakeLock.mHistoryTag); 911 } 912 } 913 914 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 915 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 916 if (mSystemReady && wakeLock.mNotifiedAcquired) { 917 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 918 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 919 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 920 } 921 } 922 923 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 924 if (mSystemReady && wakeLock.mNotifiedAcquired) { 925 wakeLock.mNotifiedAcquired = false; 926 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, 927 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 928 wakeLock.mWorkSource, wakeLock.mHistoryTag); 929 } 930 } 931 932 @SuppressWarnings("deprecation") 933 private boolean isWakeLockLevelSupportedInternal(int level) { 934 synchronized (mLock) { 935 switch (level) { 936 case PowerManager.PARTIAL_WAKE_LOCK: 937 case PowerManager.SCREEN_DIM_WAKE_LOCK: 938 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 939 case PowerManager.FULL_WAKE_LOCK: 940 case PowerManager.DOZE_WAKE_LOCK: 941 return true; 942 943 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 944 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 945 946 default: 947 return false; 948 } 949 } 950 } 951 952 // Called from native code. 953 private void userActivityFromNative(long eventTime, int event, int flags) { 954 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 955 } 956 957 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 958 synchronized (mLock) { 959 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 960 updatePowerStateLocked(); 961 } 962 } 963 } 964 965 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 966 if (DEBUG_SPEW) { 967 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 968 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 969 + ", uid=" + uid); 970 } 971 972 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 973 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 974 || !mBootCompleted || !mSystemReady) { 975 return false; 976 } 977 978 mNotifier.onUserActivity(event, uid); 979 980 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 981 if (eventTime > mLastUserActivityTimeNoChangeLights 982 && eventTime > mLastUserActivityTime) { 983 mLastUserActivityTimeNoChangeLights = eventTime; 984 mDirty |= DIRTY_USER_ACTIVITY; 985 return true; 986 } 987 } else { 988 if (eventTime > mLastUserActivityTime) { 989 mLastUserActivityTime = eventTime; 990 mDirty |= DIRTY_USER_ACTIVITY; 991 return true; 992 } 993 } 994 return false; 995 } 996 997 private void wakeUpInternal(long eventTime, int uid) { 998 synchronized (mLock) { 999 if (wakeUpNoUpdateLocked(eventTime, uid)) { 1000 updatePowerStateLocked(); 1001 } 1002 } 1003 } 1004 1005 private boolean wakeUpNoUpdateLocked(long eventTime, int uid) { 1006 if (DEBUG_SPEW) { 1007 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime + ", uid=" + uid); 1008 } 1009 1010 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 1011 || !mBootCompleted || !mSystemReady) { 1012 return false; 1013 } 1014 1015 switch (mWakefulness) { 1016 case WAKEFULNESS_ASLEEP: 1017 Slog.i(TAG, "Waking up from sleep (uid " + uid +")..."); 1018 break; 1019 case WAKEFULNESS_DREAMING: 1020 Slog.i(TAG, "Waking up from dream (uid " + uid +")..."); 1021 break; 1022 case WAKEFULNESS_DOZING: 1023 Slog.i(TAG, "Waking up from dozing (uid " + uid +")..."); 1024 break; 1025 } 1026 1027 mLastWakeTime = eventTime; 1028 mDirty |= DIRTY_WAKEFULNESS; 1029 mWakefulness = WAKEFULNESS_AWAKE; 1030 setInteractiveStateLocked(true, 0); 1031 1032 userActivityNoUpdateLocked( 1033 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, uid); 1034 return true; 1035 } 1036 1037 private void goToSleepInternal(long eventTime, int reason, int flags, int uid) { 1038 synchronized (mLock) { 1039 if (goToSleepNoUpdateLocked(eventTime, reason, flags, uid)) { 1040 updatePowerStateLocked(); 1041 } 1042 } 1043 } 1044 1045 // This method is called goToSleep for historical reasons but we actually start 1046 // dozing before really going to sleep. 1047 @SuppressWarnings("deprecation") 1048 private boolean goToSleepNoUpdateLocked(long eventTime, int reason, int flags, int uid) { 1049 if (DEBUG_SPEW) { 1050 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime 1051 + ", reason=" + reason + ", flags=" + flags + ", uid=" + uid); 1052 } 1053 1054 if (eventTime < mLastWakeTime 1055 || mWakefulness == WAKEFULNESS_ASLEEP 1056 || mWakefulness == WAKEFULNESS_DOZING 1057 || !mBootCompleted || !mSystemReady) { 1058 return false; 1059 } 1060 1061 switch (reason) { 1062 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 1063 Slog.i(TAG, "Going to sleep due to device administration policy " 1064 + "(uid " + uid +")..."); 1065 break; 1066 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 1067 Slog.i(TAG, "Going to sleep due to screen timeout (uid " + uid +")..."); 1068 break; 1069 case PowerManager.GO_TO_SLEEP_REASON_LID_SWITCH: 1070 Slog.i(TAG, "Going to sleep due to lid switch (uid " + uid +")..."); 1071 break; 1072 case PowerManager.GO_TO_SLEEP_REASON_POWER_BUTTON: 1073 Slog.i(TAG, "Going to sleep due to power button (uid " + uid +")..."); 1074 break; 1075 case PowerManager.GO_TO_SLEEP_REASON_HDMI: 1076 Slog.i(TAG, "Going to sleep due to HDMI standby (uid " + uid +")..."); 1077 break; 1078 default: 1079 Slog.i(TAG, "Going to sleep by application request (uid " + uid +")..."); 1080 reason = PowerManager.GO_TO_SLEEP_REASON_APPLICATION; 1081 break; 1082 } 1083 1084 mLastSleepTime = eventTime; 1085 mDirty |= DIRTY_WAKEFULNESS; 1086 mWakefulness = WAKEFULNESS_DOZING; 1087 mSandmanSummoned = true; 1088 setInteractiveStateLocked(false, reason); 1089 1090 // Report the number of wake locks that will be cleared by going to sleep. 1091 int numWakeLocksCleared = 0; 1092 final int numWakeLocks = mWakeLocks.size(); 1093 for (int i = 0; i < numWakeLocks; i++) { 1094 final WakeLock wakeLock = mWakeLocks.get(i); 1095 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1096 case PowerManager.FULL_WAKE_LOCK: 1097 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1098 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1099 numWakeLocksCleared += 1; 1100 break; 1101 } 1102 } 1103 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 1104 1105 // Skip dozing if requested. 1106 if ((flags & PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE) != 0) { 1107 reallyGoToSleepNoUpdateLocked(eventTime, uid); 1108 } 1109 return true; 1110 } 1111 1112 private void napInternal(long eventTime, int uid) { 1113 synchronized (mLock) { 1114 if (napNoUpdateLocked(eventTime, uid)) { 1115 updatePowerStateLocked(); 1116 } 1117 } 1118 } 1119 1120 private boolean napNoUpdateLocked(long eventTime, int uid) { 1121 if (DEBUG_SPEW) { 1122 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime + ", uid=" + uid); 1123 } 1124 1125 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1126 || !mBootCompleted || !mSystemReady) { 1127 return false; 1128 } 1129 1130 Slog.i(TAG, "Nap time (uid " + uid +")..."); 1131 1132 mDirty |= DIRTY_WAKEFULNESS; 1133 mWakefulness = WAKEFULNESS_DREAMING; 1134 mSandmanSummoned = true; 1135 setInteractiveStateLocked(true, 0); 1136 return true; 1137 } 1138 1139 // Done dozing, drop everything and go to sleep. 1140 private boolean reallyGoToSleepNoUpdateLocked(long eventTime, int uid) { 1141 if (DEBUG_SPEW) { 1142 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime 1143 + ", uid=" + uid); 1144 } 1145 1146 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1147 || !mBootCompleted || !mSystemReady) { 1148 return false; 1149 } 1150 1151 Slog.i(TAG, "Sleeping (uid " + uid +")..."); 1152 1153 mDirty |= DIRTY_WAKEFULNESS; 1154 mWakefulness = WAKEFULNESS_ASLEEP; 1155 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1156 return true; 1157 } 1158 1159 private void setInteractiveStateLocked(boolean interactive, int reason) { 1160 if (mInteractive != interactive) { 1161 finishInteractiveStateChangeLocked(); 1162 1163 mInteractive = interactive; 1164 mInteractiveChanging = true; 1165 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1166 } 1167 } 1168 1169 private void finishInteractiveStateChangeLocked() { 1170 if (mInteractiveChanging) { 1171 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1172 mInteractiveChanging = false; 1173 } 1174 } 1175 1176 /** 1177 * Updates the global power state based on dirty bits recorded in mDirty. 1178 * 1179 * This is the main function that performs power state transitions. 1180 * We centralize them here so that we can recompute the power state completely 1181 * each time something important changes, and ensure that we do it the same 1182 * way each time. The point is to gather all of the transition logic here. 1183 */ 1184 private void updatePowerStateLocked() { 1185 if (!mSystemReady || mDirty == 0) { 1186 return; 1187 } 1188 if (!Thread.holdsLock(mLock)) { 1189 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1190 } 1191 1192 // Phase 0: Basic state updates. 1193 updateIsPoweredLocked(mDirty); 1194 updateStayOnLocked(mDirty); 1195 1196 // Phase 1: Update wakefulness. 1197 // Loop because the wake lock and user activity computations are influenced 1198 // by changes in wakefulness. 1199 final long now = SystemClock.uptimeMillis(); 1200 int dirtyPhase2 = 0; 1201 for (;;) { 1202 int dirtyPhase1 = mDirty; 1203 dirtyPhase2 |= dirtyPhase1; 1204 mDirty = 0; 1205 1206 updateWakeLockSummaryLocked(dirtyPhase1); 1207 updateUserActivitySummaryLocked(now, dirtyPhase1); 1208 if (!updateWakefulnessLocked(dirtyPhase1)) { 1209 break; 1210 } 1211 } 1212 1213 // Phase 2: Update dreams and display power state. 1214 updateDreamLocked(dirtyPhase2); 1215 updateDisplayPowerStateLocked(dirtyPhase2); 1216 1217 // Phase 3: Send notifications, if needed. 1218 if (mDisplayReady) { 1219 finishInteractiveStateChangeLocked(); 1220 } 1221 1222 // Phase 4: Update suspend blocker. 1223 // Because we might release the last suspend blocker here, we need to make sure 1224 // we finished everything else first! 1225 updateSuspendBlockerLocked(); 1226 } 1227 1228 /** 1229 * Updates the value of mIsPowered. 1230 * Sets DIRTY_IS_POWERED if a change occurred. 1231 */ 1232 private void updateIsPoweredLocked(int dirty) { 1233 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1234 final boolean wasPowered = mIsPowered; 1235 final int oldPlugType = mPlugType; 1236 final boolean oldLevelLow = mBatteryLevelLow; 1237 mIsPowered = mBatteryManagerInternal.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1238 mPlugType = mBatteryManagerInternal.getPlugType(); 1239 mBatteryLevel = mBatteryManagerInternal.getBatteryLevel(); 1240 mBatteryLevelLow = mBatteryManagerInternal.getBatteryLevelLow(); 1241 1242 if (DEBUG_SPEW) { 1243 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1244 + ", mIsPowered=" + mIsPowered 1245 + ", oldPlugType=" + oldPlugType 1246 + ", mPlugType=" + mPlugType 1247 + ", mBatteryLevel=" + mBatteryLevel); 1248 } 1249 1250 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1251 mDirty |= DIRTY_IS_POWERED; 1252 1253 // Update wireless dock detection state. 1254 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1255 mIsPowered, mPlugType, mBatteryLevel); 1256 1257 // Treat plugging and unplugging the devices as a user activity. 1258 // Users find it disconcerting when they plug or unplug the device 1259 // and it shuts off right away. 1260 // Some devices also wake the device when plugged or unplugged because 1261 // they don't have a charging LED. 1262 final long now = SystemClock.uptimeMillis(); 1263 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1264 dockedOnWirelessCharger)) { 1265 wakeUpNoUpdateLocked(now, Process.SYSTEM_UID); 1266 } 1267 userActivityNoUpdateLocked( 1268 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1269 1270 // Tell the notifier whether wireless charging has started so that 1271 // it can provide feedback to the user. 1272 if (dockedOnWirelessCharger) { 1273 mNotifier.onWirelessChargingStarted(); 1274 } 1275 } 1276 1277 if (wasPowered != mIsPowered || oldLevelLow != mBatteryLevelLow) { 1278 if (oldLevelLow != mBatteryLevelLow && !mBatteryLevelLow) { 1279 if (DEBUG_SPEW) { 1280 Slog.d(TAG, "updateIsPoweredLocked: resetting low power snooze"); 1281 } 1282 mAutoLowPowerModeSnoozing = false; 1283 } 1284 updateLowPowerModeLocked(); 1285 } 1286 } 1287 } 1288 1289 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1290 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1291 // Don't wake when powered unless configured to do so. 1292 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1293 return false; 1294 } 1295 1296 // Don't wake when undocked from wireless charger. 1297 // See WirelessChargerDetector for justification. 1298 if (wasPowered && !mIsPowered 1299 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1300 return false; 1301 } 1302 1303 // Don't wake when docked on wireless charger unless we are certain of it. 1304 // See WirelessChargerDetector for justification. 1305 if (!wasPowered && mIsPowered 1306 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1307 && !dockedOnWirelessCharger) { 1308 return false; 1309 } 1310 1311 // If already dreaming and becoming powered, then don't wake. 1312 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1313 return false; 1314 } 1315 1316 // Otherwise wake up! 1317 return true; 1318 } 1319 1320 /** 1321 * Updates the value of mStayOn. 1322 * Sets DIRTY_STAY_ON if a change occurred. 1323 */ 1324 private void updateStayOnLocked(int dirty) { 1325 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1326 final boolean wasStayOn = mStayOn; 1327 if (mStayOnWhilePluggedInSetting != 0 1328 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1329 mStayOn = mBatteryManagerInternal.isPowered(mStayOnWhilePluggedInSetting); 1330 } else { 1331 mStayOn = false; 1332 } 1333 1334 if (mStayOn != wasStayOn) { 1335 mDirty |= DIRTY_STAY_ON; 1336 } 1337 } 1338 } 1339 1340 /** 1341 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1342 * Note that most wake-locks are ignored when the system is asleep. 1343 * 1344 * This function must have no other side-effects. 1345 */ 1346 @SuppressWarnings("deprecation") 1347 private void updateWakeLockSummaryLocked(int dirty) { 1348 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1349 mWakeLockSummary = 0; 1350 1351 final int numWakeLocks = mWakeLocks.size(); 1352 for (int i = 0; i < numWakeLocks; i++) { 1353 final WakeLock wakeLock = mWakeLocks.get(i); 1354 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1355 case PowerManager.PARTIAL_WAKE_LOCK: 1356 mWakeLockSummary |= WAKE_LOCK_CPU; 1357 break; 1358 case PowerManager.FULL_WAKE_LOCK: 1359 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1360 break; 1361 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1362 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1363 break; 1364 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1365 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1366 break; 1367 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1368 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1369 break; 1370 case PowerManager.DOZE_WAKE_LOCK: 1371 mWakeLockSummary |= WAKE_LOCK_DOZE; 1372 break; 1373 } 1374 } 1375 1376 // Cancel wake locks that make no sense based on the current state. 1377 if (mWakefulness != WAKEFULNESS_DOZING) { 1378 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1379 } 1380 if (mWakefulness == WAKEFULNESS_ASLEEP 1381 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1382 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1383 | WAKE_LOCK_BUTTON_BRIGHT); 1384 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1385 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1386 } 1387 } 1388 1389 // Infer implied wake locks where necessary based on the current state. 1390 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1391 if (mWakefulness == WAKEFULNESS_AWAKE) { 1392 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1393 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1394 mWakeLockSummary |= WAKE_LOCK_CPU; 1395 } 1396 } 1397 1398 if (DEBUG_SPEW) { 1399 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1400 + wakefulnessToString(mWakefulness) 1401 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1402 } 1403 } 1404 } 1405 1406 /** 1407 * Updates the value of mUserActivitySummary to summarize the user requested 1408 * state of the system such as whether the screen should be bright or dim. 1409 * Note that user activity is ignored when the system is asleep. 1410 * 1411 * This function must have no other side-effects. 1412 */ 1413 private void updateUserActivitySummaryLocked(long now, int dirty) { 1414 // Update the status of the user activity timeout timer. 1415 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1416 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1417 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1418 1419 long nextTimeout = 0; 1420 if (mWakefulness == WAKEFULNESS_AWAKE 1421 || mWakefulness == WAKEFULNESS_DREAMING 1422 || mWakefulness == WAKEFULNESS_DOZING) { 1423 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1424 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1425 1426 mUserActivitySummary = 0; 1427 if (mLastUserActivityTime >= mLastWakeTime) { 1428 nextTimeout = mLastUserActivityTime 1429 + screenOffTimeout - screenDimDuration; 1430 if (now < nextTimeout) { 1431 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1432 } else { 1433 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1434 if (now < nextTimeout) { 1435 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1436 } 1437 } 1438 } 1439 if (mUserActivitySummary == 0 1440 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1441 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1442 if (now < nextTimeout) { 1443 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_BRIGHT) { 1444 mUserActivitySummary = USER_ACTIVITY_SCREEN_BRIGHT; 1445 } else if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DIM) { 1446 mUserActivitySummary = USER_ACTIVITY_SCREEN_DIM; 1447 } 1448 } 1449 } 1450 if (mUserActivitySummary != 0) { 1451 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1452 msg.setAsynchronous(true); 1453 mHandler.sendMessageAtTime(msg, nextTimeout); 1454 } 1455 } else { 1456 mUserActivitySummary = 0; 1457 } 1458 1459 if (DEBUG_SPEW) { 1460 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1461 + wakefulnessToString(mWakefulness) 1462 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1463 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1464 } 1465 } 1466 } 1467 1468 /** 1469 * Called when a user activity timeout has occurred. 1470 * Simply indicates that something about user activity has changed so that the new 1471 * state can be recomputed when the power state is updated. 1472 * 1473 * This function must have no other side-effects besides setting the dirty 1474 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1475 */ 1476 private void handleUserActivityTimeout() { // runs on handler thread 1477 synchronized (mLock) { 1478 if (DEBUG_SPEW) { 1479 Slog.d(TAG, "handleUserActivityTimeout"); 1480 } 1481 1482 mDirty |= DIRTY_USER_ACTIVITY; 1483 updatePowerStateLocked(); 1484 } 1485 } 1486 1487 private int getScreenOffTimeoutLocked() { 1488 int timeout = mScreenOffTimeoutSetting; 1489 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1490 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1491 } 1492 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1493 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1494 } 1495 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1496 } 1497 1498 private int getScreenDimDurationLocked(int screenOffTimeout) { 1499 return Math.min(mMaximumScreenDimDurationConfig, 1500 (int)(screenOffTimeout * mMaximumScreenDimRatioConfig)); 1501 } 1502 1503 /** 1504 * Updates the wakefulness of the device. 1505 * 1506 * This is the function that decides whether the device should start dreaming 1507 * based on the current wake locks and user activity state. It may modify mDirty 1508 * if the wakefulness changes. 1509 * 1510 * Returns true if the wakefulness changed and we need to restart power state calculation. 1511 */ 1512 private boolean updateWakefulnessLocked(int dirty) { 1513 boolean changed = false; 1514 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1515 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1516 | DIRTY_DOCK_STATE)) != 0) { 1517 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1518 if (DEBUG_SPEW) { 1519 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1520 } 1521 final long time = SystemClock.uptimeMillis(); 1522 if (shouldNapAtBedTimeLocked()) { 1523 changed = napNoUpdateLocked(time, Process.SYSTEM_UID); 1524 } else { 1525 changed = goToSleepNoUpdateLocked(time, 1526 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0, Process.SYSTEM_UID); 1527 } 1528 } 1529 } 1530 return changed; 1531 } 1532 1533 /** 1534 * Returns true if the device should automatically nap and start dreaming when the user 1535 * activity timeout has expired and it's bedtime. 1536 */ 1537 private boolean shouldNapAtBedTimeLocked() { 1538 return mDreamsActivateOnSleepSetting 1539 || (mDreamsActivateOnDockSetting 1540 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1541 } 1542 1543 /** 1544 * Returns true if the device should go to sleep now. 1545 * Also used when exiting a dream to determine whether we should go back 1546 * to being fully awake or else go to sleep for good. 1547 */ 1548 private boolean isItBedTimeYetLocked() { 1549 return mBootCompleted && !isBeingKeptAwakeLocked(); 1550 } 1551 1552 /** 1553 * Returns true if the device is being kept awake by a wake lock, user activity 1554 * or the stay on while powered setting. We also keep the phone awake when 1555 * the proximity sensor returns a positive result so that the device does not 1556 * lock while in a phone call. This function only controls whether the device 1557 * will go to sleep or dream which is independent of whether it will be allowed 1558 * to suspend. 1559 */ 1560 private boolean isBeingKeptAwakeLocked() { 1561 return mStayOn 1562 || mProximityPositive 1563 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1564 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1565 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1566 } 1567 1568 /** 1569 * Determines whether to post a message to the sandman to update the dream state. 1570 */ 1571 private void updateDreamLocked(int dirty) { 1572 if ((dirty & (DIRTY_WAKEFULNESS 1573 | DIRTY_USER_ACTIVITY 1574 | DIRTY_WAKE_LOCKS 1575 | DIRTY_BOOT_COMPLETED 1576 | DIRTY_SETTINGS 1577 | DIRTY_IS_POWERED 1578 | DIRTY_STAY_ON 1579 | DIRTY_PROXIMITY_POSITIVE 1580 | DIRTY_BATTERY_STATE)) != 0) { 1581 scheduleSandmanLocked(); 1582 } 1583 } 1584 1585 private void scheduleSandmanLocked() { 1586 if (!mSandmanScheduled) { 1587 mSandmanScheduled = true; 1588 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1589 msg.setAsynchronous(true); 1590 mHandler.sendMessage(msg); 1591 } 1592 } 1593 1594 /** 1595 * Called when the device enters or exits a dreaming or dozing state. 1596 * 1597 * We do this asynchronously because we must call out of the power manager to start 1598 * the dream and we don't want to hold our lock while doing so. There is a risk that 1599 * the device will wake or go to sleep in the meantime so we have to handle that case. 1600 */ 1601 private void handleSandman() { // runs on handler thread 1602 // Handle preconditions. 1603 final boolean startDreaming; 1604 final int wakefulness; 1605 synchronized (mLock) { 1606 mSandmanScheduled = false; 1607 wakefulness = mWakefulness; 1608 if (mSandmanSummoned) { 1609 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1610 || wakefulness == WAKEFULNESS_DOZING); 1611 mSandmanSummoned = false; 1612 } else { 1613 startDreaming = false; 1614 } 1615 } 1616 1617 // Start dreaming if needed. 1618 // We only control the dream on the handler thread, so we don't need to worry about 1619 // concurrent attempts to start or stop the dream. 1620 final boolean isDreaming; 1621 if (mDreamManager != null) { 1622 // Restart the dream whenever the sandman is summoned. 1623 if (startDreaming) { 1624 mDreamManager.stopDream(false /*immediate*/); 1625 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1626 } 1627 isDreaming = mDreamManager.isDreaming(); 1628 } else { 1629 isDreaming = false; 1630 } 1631 1632 // Update dream state. 1633 synchronized (mLock) { 1634 // Remember the initial battery level when the dream started. 1635 if (startDreaming && isDreaming) { 1636 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1637 if (wakefulness == WAKEFULNESS_DOZING) { 1638 Slog.i(TAG, "Dozing..."); 1639 } else { 1640 Slog.i(TAG, "Dreaming..."); 1641 } 1642 } 1643 1644 // If preconditions changed, wait for the next iteration to determine 1645 // whether the dream should continue (or be restarted). 1646 if (mSandmanSummoned || mWakefulness != wakefulness) { 1647 return; // wait for next cycle 1648 } 1649 1650 // Determine whether the dream should continue. 1651 if (wakefulness == WAKEFULNESS_DREAMING) { 1652 if (isDreaming && canDreamLocked()) { 1653 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1654 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1655 - mDreamsBatteryLevelDrainCutoffConfig 1656 && !isBeingKeptAwakeLocked()) { 1657 // If the user activity timeout expired and the battery appears 1658 // to be draining faster than it is charging then stop dreaming 1659 // and go to sleep. 1660 Slog.i(TAG, "Stopping dream because the battery appears to " 1661 + "be draining faster than it is charging. " 1662 + "Battery level when dream started: " 1663 + mBatteryLevelWhenDreamStarted + "%. " 1664 + "Battery level now: " + mBatteryLevel + "%."); 1665 } else { 1666 return; // continue dreaming 1667 } 1668 } 1669 1670 // Dream has ended or will be stopped. Update the power state. 1671 if (isItBedTimeYetLocked()) { 1672 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1673 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0, Process.SYSTEM_UID); 1674 updatePowerStateLocked(); 1675 } else { 1676 wakeUpNoUpdateLocked(SystemClock.uptimeMillis(), Process.SYSTEM_UID); 1677 updatePowerStateLocked(); 1678 } 1679 } else if (wakefulness == WAKEFULNESS_DOZING) { 1680 if (isDreaming) { 1681 return; // continue dozing 1682 } 1683 1684 // Doze has ended or will be stopped. Update the power state. 1685 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis(), Process.SYSTEM_UID); 1686 updatePowerStateLocked(); 1687 } 1688 } 1689 1690 // Stop dream. 1691 if (isDreaming) { 1692 mDreamManager.stopDream(false /*immediate*/); 1693 } 1694 } 1695 1696 /** 1697 * Returns true if the device is allowed to dream in its current state. 1698 * This function is not called when dozing. 1699 */ 1700 private boolean canDreamLocked() { 1701 if (mWakefulness != WAKEFULNESS_DREAMING 1702 || !mDreamsSupportedConfig 1703 || !mDreamsEnabledSetting 1704 || !mDisplayPowerRequest.isBrightOrDim() 1705 || !mBootCompleted) { 1706 return false; 1707 } 1708 if (!isBeingKeptAwakeLocked()) { 1709 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1710 return false; 1711 } 1712 if (!mIsPowered 1713 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1714 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1715 return false; 1716 } 1717 if (mIsPowered 1718 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1719 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1720 return false; 1721 } 1722 } 1723 return true; 1724 } 1725 1726 private void handleScreenOnBlockerReleased() { 1727 synchronized (mLock) { 1728 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1729 updatePowerStateLocked(); 1730 } 1731 } 1732 1733 /** 1734 * Updates the display power state asynchronously. 1735 * When the update is finished, mDisplayReady will be set to true. The display 1736 * controller posts a message to tell us when the actual display power state 1737 * has been updated so we come back here to double-check and finish up. 1738 * 1739 * This function recalculates the display power state each time. 1740 */ 1741 private void updateDisplayPowerStateLocked(int dirty) { 1742 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1743 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1744 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1745 mDisplayPowerRequest.policy = getDesiredScreenPolicyLocked(); 1746 1747 int screenBrightness = mScreenBrightnessSettingDefault; 1748 float screenAutoBrightnessAdjustment = 0.0f; 1749 boolean autoBrightness = (mScreenBrightnessModeSetting == 1750 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1751 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1752 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1753 autoBrightness = false; 1754 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1755 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1756 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1757 screenBrightness = mScreenBrightnessSetting; 1758 } 1759 if (autoBrightness) { 1760 screenBrightness = mScreenBrightnessSettingDefault; 1761 if (isValidAutoBrightnessAdjustment( 1762 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1763 screenAutoBrightnessAdjustment = 1764 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1765 } else if (isValidAutoBrightnessAdjustment( 1766 mScreenAutoBrightnessAdjustmentSetting)) { 1767 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1768 } 1769 } 1770 screenBrightness = Math.max(Math.min(screenBrightness, 1771 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1772 screenAutoBrightnessAdjustment = Math.max(Math.min( 1773 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1774 mDisplayPowerRequest.screenBrightness = screenBrightness; 1775 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1776 screenAutoBrightnessAdjustment; 1777 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1778 1779 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1780 1781 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1782 1783 mDisplayPowerRequest.lowPowerMode = mLowPowerModeEnabled; 1784 1785 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DOZE) { 1786 mDisplayPowerRequest.dozeScreenState = mDozeScreenStateOverrideFromDreamManager; 1787 mDisplayPowerRequest.dozeScreenBrightness = 1788 mDozeScreenBrightnessOverrideFromDreamManager; 1789 } else { 1790 mDisplayPowerRequest.dozeScreenState = Display.STATE_UNKNOWN; 1791 mDisplayPowerRequest.dozeScreenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 1792 } 1793 1794 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1795 mRequestWaitForNegativeProximity); 1796 mRequestWaitForNegativeProximity = false; 1797 1798 if (DEBUG_SPEW) { 1799 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1800 + ", policy=" + mDisplayPowerRequest.policy 1801 + ", mWakefulness=" + mWakefulness 1802 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1803 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1804 + ", mBootCompleted=" + mBootCompleted); 1805 } 1806 } 1807 } 1808 1809 private static boolean isValidBrightness(int value) { 1810 return value >= 0 && value <= 255; 1811 } 1812 1813 private static boolean isValidAutoBrightnessAdjustment(float value) { 1814 // Handles NaN by always returning false. 1815 return value >= -1.0f && value <= 1.0f; 1816 } 1817 1818 private int getDesiredScreenPolicyLocked() { 1819 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1820 return DisplayPowerRequest.POLICY_OFF; 1821 } 1822 1823 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1824 return DisplayPowerRequest.POLICY_DOZE; 1825 } 1826 1827 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1828 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1829 || !mBootCompleted) { 1830 return DisplayPowerRequest.POLICY_BRIGHT; 1831 } 1832 1833 return DisplayPowerRequest.POLICY_DIM; 1834 } 1835 1836 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1837 new DisplayManagerInternal.DisplayPowerCallbacks() { 1838 private int mDisplayState = Display.STATE_UNKNOWN; 1839 1840 @Override 1841 public void onStateChanged() { 1842 synchronized (mLock) { 1843 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1844 updatePowerStateLocked(); 1845 } 1846 } 1847 1848 @Override 1849 public void onProximityPositive() { 1850 synchronized (mLock) { 1851 mProximityPositive = true; 1852 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1853 updatePowerStateLocked(); 1854 } 1855 } 1856 1857 @Override 1858 public void onProximityNegative() { 1859 synchronized (mLock) { 1860 mProximityPositive = false; 1861 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1862 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1863 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1864 updatePowerStateLocked(); 1865 } 1866 } 1867 1868 @Override 1869 public void onDisplayStateChange(int state) { 1870 // This method is only needed to support legacy display blanking behavior 1871 // where the display's power state is coupled to suspend or to the power HAL. 1872 // The order of operations matters here. 1873 synchronized (mLock) { 1874 if (mDisplayState != state) { 1875 mDisplayState = state; 1876 if (state == Display.STATE_OFF) { 1877 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1878 setHalInteractiveModeLocked(false); 1879 } 1880 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1881 setHalAutoSuspendModeLocked(true); 1882 } 1883 } else { 1884 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1885 setHalAutoSuspendModeLocked(false); 1886 } 1887 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1888 setHalInteractiveModeLocked(true); 1889 } 1890 } 1891 } 1892 } 1893 } 1894 1895 @Override 1896 public void acquireSuspendBlocker() { 1897 mDisplaySuspendBlocker.acquire(); 1898 } 1899 1900 @Override 1901 public void releaseSuspendBlocker() { 1902 mDisplaySuspendBlocker.release(); 1903 } 1904 1905 @Override 1906 public String toString() { 1907 synchronized (this) { 1908 return "state=" + Display.stateToString(mDisplayState); 1909 } 1910 } 1911 }; 1912 1913 private boolean shouldUseProximitySensorLocked() { 1914 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1915 } 1916 1917 /** 1918 * Updates the suspend blocker that keeps the CPU alive. 1919 * 1920 * This function must have no other side-effects. 1921 */ 1922 private void updateSuspendBlockerLocked() { 1923 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1924 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1925 final boolean autoSuspend = !needDisplaySuspendBlocker; 1926 1927 // Disable auto-suspend if needed. 1928 if (!autoSuspend) { 1929 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1930 setHalAutoSuspendModeLocked(false); 1931 } 1932 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1933 setHalInteractiveModeLocked(true); 1934 } 1935 } 1936 1937 // First acquire suspend blockers if needed. 1938 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1939 mWakeLockSuspendBlocker.acquire(); 1940 mHoldingWakeLockSuspendBlocker = true; 1941 } 1942 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1943 mDisplaySuspendBlocker.acquire(); 1944 mHoldingDisplaySuspendBlocker = true; 1945 } 1946 1947 // Then release suspend blockers if needed. 1948 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1949 mWakeLockSuspendBlocker.release(); 1950 mHoldingWakeLockSuspendBlocker = false; 1951 } 1952 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1953 mDisplaySuspendBlocker.release(); 1954 mHoldingDisplaySuspendBlocker = false; 1955 } 1956 1957 // Enable auto-suspend if needed. 1958 if (autoSuspend) { 1959 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1960 setHalInteractiveModeLocked(false); 1961 } 1962 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1963 setHalAutoSuspendModeLocked(true); 1964 } 1965 } 1966 } 1967 1968 /** 1969 * Return true if we must keep a suspend blocker active on behalf of the display. 1970 * We do so if the screen is on or is in transition between states. 1971 */ 1972 private boolean needDisplaySuspendBlockerLocked() { 1973 if (!mDisplayReady) { 1974 return true; 1975 } 1976 if (mDisplayPowerRequest.isBrightOrDim()) { 1977 // If we asked for the screen to be on but it is off due to the proximity 1978 // sensor then we may suspend but only if the configuration allows it. 1979 // On some hardware it may not be safe to suspend because the proximity 1980 // sensor may not be correctly configured as a wake-up source. 1981 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1982 || !mSuspendWhenScreenOffDueToProximityConfig) { 1983 return true; 1984 } 1985 } 1986 // Let the system suspend if the screen is off or dozing. 1987 return false; 1988 } 1989 1990 private void setHalAutoSuspendModeLocked(boolean enable) { 1991 if (enable != mHalAutoSuspendModeEnabled) { 1992 if (DEBUG) { 1993 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 1994 } 1995 mHalAutoSuspendModeEnabled = enable; 1996 nativeSetAutoSuspend(enable); 1997 } 1998 } 1999 2000 private void setHalInteractiveModeLocked(boolean enable) { 2001 if (enable != mHalInteractiveModeEnabled) { 2002 if (DEBUG) { 2003 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 2004 } 2005 mHalInteractiveModeEnabled = enable; 2006 nativeSetInteractive(enable); 2007 } 2008 } 2009 2010 private boolean isInteractiveInternal() { 2011 synchronized (mLock) { 2012 return mInteractive; 2013 } 2014 } 2015 2016 private boolean isLowPowerModeInternal() { 2017 synchronized (mLock) { 2018 return mLowPowerModeEnabled; 2019 } 2020 } 2021 2022 private void handleBatteryStateChangedLocked() { 2023 mDirty |= DIRTY_BATTERY_STATE; 2024 updatePowerStateLocked(); 2025 } 2026 2027 private void startWatchingForBootAnimationFinished() { 2028 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 2029 } 2030 2031 private void checkIfBootAnimationFinished() { 2032 if (DEBUG) { 2033 Slog.d(TAG, "Check if boot animation finished..."); 2034 } 2035 2036 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 2037 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 2038 BOOT_ANIMATION_POLL_INTERVAL); 2039 return; 2040 } 2041 2042 synchronized (mLock) { 2043 if (!mBootCompleted) { 2044 Slog.i(TAG, "Boot animation finished."); 2045 handleBootCompletedLocked(); 2046 } 2047 } 2048 } 2049 2050 private void handleBootCompletedLocked() { 2051 final long now = SystemClock.uptimeMillis(); 2052 mBootCompleted = true; 2053 mDirty |= DIRTY_BOOT_COMPLETED; 2054 userActivityNoUpdateLocked( 2055 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 2056 updatePowerStateLocked(); 2057 } 2058 2059 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 2060 final String reason, boolean wait) { 2061 if (mHandler == null || !mSystemReady) { 2062 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 2063 } 2064 2065 Runnable runnable = new Runnable() { 2066 @Override 2067 public void run() { 2068 synchronized (this) { 2069 if (shutdown) { 2070 ShutdownThread.shutdown(mContext, confirm); 2071 } else { 2072 ShutdownThread.reboot(mContext, reason, confirm); 2073 } 2074 } 2075 } 2076 }; 2077 2078 // ShutdownThread must run on a looper capable of displaying the UI. 2079 Message msg = Message.obtain(mHandler, runnable); 2080 msg.setAsynchronous(true); 2081 mHandler.sendMessage(msg); 2082 2083 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 2084 if (wait) { 2085 synchronized (runnable) { 2086 while (true) { 2087 try { 2088 runnable.wait(); 2089 } catch (InterruptedException e) { 2090 } 2091 } 2092 } 2093 } 2094 } 2095 2096 private void crashInternal(final String message) { 2097 Thread t = new Thread("PowerManagerService.crash()") { 2098 @Override 2099 public void run() { 2100 throw new RuntimeException(message); 2101 } 2102 }; 2103 try { 2104 t.start(); 2105 t.join(); 2106 } catch (InterruptedException e) { 2107 Log.wtf(TAG, e); 2108 } 2109 } 2110 2111 private void setStayOnSettingInternal(int val) { 2112 Settings.Global.putInt(mContext.getContentResolver(), 2113 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 2114 } 2115 2116 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 2117 synchronized (mLock) { 2118 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 2119 mDirty |= DIRTY_SETTINGS; 2120 updatePowerStateLocked(); 2121 } 2122 } 2123 2124 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 2125 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 2126 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 2127 } 2128 2129 private void setAttentionLightInternal(boolean on, int color) { 2130 Light light; 2131 synchronized (mLock) { 2132 if (!mSystemReady) { 2133 return; 2134 } 2135 light = mAttentionLight; 2136 } 2137 2138 // Control light outside of lock. 2139 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 2140 } 2141 2142 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 2143 synchronized (mLock) { 2144 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 2145 mScreenBrightnessOverrideFromWindowManager = brightness; 2146 mDirty |= DIRTY_SETTINGS; 2147 updatePowerStateLocked(); 2148 } 2149 } 2150 } 2151 2152 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 2153 synchronized (mLock) { 2154 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 2155 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 2156 mDirty |= DIRTY_SETTINGS; 2157 updatePowerStateLocked(); 2158 } 2159 } 2160 } 2161 2162 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2163 synchronized (mLock) { 2164 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2165 mTemporaryScreenBrightnessSettingOverride = brightness; 2166 mDirty |= DIRTY_SETTINGS; 2167 updatePowerStateLocked(); 2168 } 2169 } 2170 } 2171 2172 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2173 synchronized (mLock) { 2174 // Note: This condition handles NaN because NaN is not equal to any other 2175 // value, including itself. 2176 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2177 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2178 mDirty |= DIRTY_SETTINGS; 2179 updatePowerStateLocked(); 2180 } 2181 } 2182 } 2183 2184 private void setDozeOverrideFromDreamManagerInternal( 2185 int screenState, int screenBrightness) { 2186 synchronized (mLock) { 2187 if (mDozeScreenStateOverrideFromDreamManager != screenState 2188 || mDozeScreenBrightnessOverrideFromDreamManager != screenBrightness) { 2189 mDozeScreenStateOverrideFromDreamManager = screenState; 2190 mDozeScreenBrightnessOverrideFromDreamManager = screenBrightness; 2191 mDirty |= DIRTY_SETTINGS; 2192 updatePowerStateLocked(); 2193 } 2194 } 2195 } 2196 2197 private void powerHintInternal(int hintId, int data) { 2198 nativeSendPowerHint(hintId, data); 2199 } 2200 2201 private static void setSurfaceFlingerLowPowerMode(int enabled) { 2202 try { 2203 final IBinder flinger = ServiceManager.getService("SurfaceFlinger"); 2204 if (flinger != null) { 2205 final Parcel data = Parcel.obtain(); 2206 data.writeInterfaceToken("android.ui.ISurfaceComposer"); 2207 data.writeInt(enabled); 2208 flinger.transact(1016, data, null, 0); 2209 data.recycle(); 2210 } 2211 } catch (RemoteException ex) { 2212 Slog.e(TAG, "Failed to reduce refresh rate", ex); 2213 } 2214 } 2215 2216 /** 2217 * Low-level function turn the device off immediately, without trying 2218 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2219 */ 2220 public static void lowLevelShutdown() { 2221 SystemProperties.set("sys.powerctl", "shutdown"); 2222 } 2223 2224 /** 2225 * Low-level function to reboot the device. On success, this 2226 * function doesn't return. If more than 20 seconds passes from 2227 * the time a reboot is requested (120 seconds for reboot to 2228 * recovery), this method returns. 2229 * 2230 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2231 */ 2232 public static void lowLevelReboot(String reason) { 2233 if (reason == null) { 2234 reason = ""; 2235 } 2236 long duration; 2237 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2238 // If we are rebooting to go into recovery, instead of 2239 // setting sys.powerctl directly we'll start the 2240 // pre-recovery service which will do some preparation for 2241 // recovery and then reboot for us. 2242 // 2243 // This preparation can take more than 20 seconds if 2244 // there's a very large update package, so lengthen the 2245 // timeout. 2246 SystemProperties.set("ctl.start", "pre-recovery"); 2247 duration = 120 * 1000L; 2248 } else { 2249 SystemProperties.set("sys.powerctl", "reboot," + reason); 2250 duration = 20 * 1000L; 2251 } 2252 try { 2253 Thread.sleep(duration); 2254 } catch (InterruptedException e) { 2255 Thread.currentThread().interrupt(); 2256 } 2257 } 2258 2259 @Override // Watchdog.Monitor implementation 2260 public void monitor() { 2261 // Grab and release lock for watchdog monitor to detect deadlocks. 2262 synchronized (mLock) { 2263 } 2264 } 2265 2266 private void dumpInternal(PrintWriter pw) { 2267 pw.println("POWER MANAGER (dumpsys power)\n"); 2268 2269 final WirelessChargerDetector wcd; 2270 synchronized (mLock) { 2271 pw.println("Power Manager State:"); 2272 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2273 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2274 pw.println(" mInteractive=" + mInteractive); 2275 pw.println(" mIsPowered=" + mIsPowered); 2276 pw.println(" mPlugType=" + mPlugType); 2277 pw.println(" mBatteryLevel=" + mBatteryLevel); 2278 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2279 pw.println(" mDockState=" + mDockState); 2280 pw.println(" mStayOn=" + mStayOn); 2281 pw.println(" mProximityPositive=" + mProximityPositive); 2282 pw.println(" mBootCompleted=" + mBootCompleted); 2283 pw.println(" mSystemReady=" + mSystemReady); 2284 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2285 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2286 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2287 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2288 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2289 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2290 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2291 pw.println(" mLowPowerModeEnabled=" + mLowPowerModeEnabled); 2292 pw.println(" mBatteryLevelLow=" + mBatteryLevelLow); 2293 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2294 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2295 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2296 pw.println(" mLastUserActivityTimeNoChangeLights=" 2297 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2298 pw.println(" mDisplayReady=" + mDisplayReady); 2299 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2300 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2301 2302 pw.println(); 2303 pw.println("Settings and Configuration:"); 2304 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2305 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2306 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2307 + mDecoupleHalInteractiveModeFromDisplayConfig); 2308 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2309 + mWakeUpWhenPluggedOrUnpluggedConfig); 2310 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2311 + mSuspendWhenScreenOffDueToProximityConfig); 2312 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2313 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2314 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2315 + mDreamsActivatedOnSleepByDefaultConfig); 2316 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2317 + mDreamsActivatedOnDockByDefaultConfig); 2318 pw.println(" mDreamsEnabledOnBatteryConfig=" 2319 + mDreamsEnabledOnBatteryConfig); 2320 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2321 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2322 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2323 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2324 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2325 + mDreamsBatteryLevelDrainCutoffConfig); 2326 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2327 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2328 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2329 pw.println(" mLowPowerModeSetting=" + mLowPowerModeSetting); 2330 pw.println(" mAutoLowPowerModeEnabled=" + mAutoLowPowerModeEnabled); 2331 pw.println(" mAutoLowPowerModeSnoozing=" + mAutoLowPowerModeSnoozing); 2332 pw.println(" mMinimumScreenOffTimeoutConfig=" + mMinimumScreenOffTimeoutConfig); 2333 pw.println(" mMaximumScreenDimDurationConfig=" + mMaximumScreenDimDurationConfig); 2334 pw.println(" mMaximumScreenDimRatioConfig=" + mMaximumScreenDimRatioConfig); 2335 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2336 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2337 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2338 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2339 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2340 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2341 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2342 + mScreenAutoBrightnessAdjustmentSetting); 2343 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2344 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2345 + mScreenBrightnessOverrideFromWindowManager); 2346 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2347 + mUserActivityTimeoutOverrideFromWindowManager); 2348 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2349 + mTemporaryScreenBrightnessSettingOverride); 2350 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2351 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2352 pw.println(" mDozeScreenStateOverrideFromDreamManager=" 2353 + mDozeScreenStateOverrideFromDreamManager); 2354 pw.println(" mDozeScreenBrightnessOverrideFromDreamManager=" 2355 + mDozeScreenBrightnessOverrideFromDreamManager); 2356 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2357 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2358 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2359 2360 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2361 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2362 pw.println(); 2363 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2364 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2365 2366 pw.println(); 2367 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2368 for (WakeLock wl : mWakeLocks) { 2369 pw.println(" " + wl); 2370 } 2371 2372 pw.println(); 2373 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2374 for (SuspendBlocker sb : mSuspendBlockers) { 2375 pw.println(" " + sb); 2376 } 2377 2378 pw.println(); 2379 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2380 2381 pw.println(); 2382 pw.println("Display Power: " + mDisplayPowerCallbacks); 2383 2384 wcd = mWirelessChargerDetector; 2385 } 2386 2387 if (wcd != null) { 2388 wcd.dump(pw); 2389 } 2390 } 2391 2392 private SuspendBlocker createSuspendBlockerLocked(String name) { 2393 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2394 mSuspendBlockers.add(suspendBlocker); 2395 return suspendBlocker; 2396 } 2397 2398 private static String wakefulnessToString(int wakefulness) { 2399 switch (wakefulness) { 2400 case WAKEFULNESS_ASLEEP: 2401 return "Asleep"; 2402 case WAKEFULNESS_AWAKE: 2403 return "Awake"; 2404 case WAKEFULNESS_DREAMING: 2405 return "Dreaming"; 2406 case WAKEFULNESS_DOZING: 2407 return "Dozing"; 2408 default: 2409 return Integer.toString(wakefulness); 2410 } 2411 } 2412 2413 private static WorkSource copyWorkSource(WorkSource workSource) { 2414 return workSource != null ? new WorkSource(workSource) : null; 2415 } 2416 2417 private final class BatteryReceiver extends BroadcastReceiver { 2418 @Override 2419 public void onReceive(Context context, Intent intent) { 2420 synchronized (mLock) { 2421 handleBatteryStateChangedLocked(); 2422 } 2423 } 2424 } 2425 2426 private final class DreamReceiver extends BroadcastReceiver { 2427 @Override 2428 public void onReceive(Context context, Intent intent) { 2429 synchronized (mLock) { 2430 scheduleSandmanLocked(); 2431 } 2432 } 2433 } 2434 2435 private final class UserSwitchedReceiver extends BroadcastReceiver { 2436 @Override 2437 public void onReceive(Context context, Intent intent) { 2438 synchronized (mLock) { 2439 handleSettingsChangedLocked(); 2440 } 2441 } 2442 } 2443 2444 private final class DockReceiver extends BroadcastReceiver { 2445 @Override 2446 public void onReceive(Context context, Intent intent) { 2447 synchronized (mLock) { 2448 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2449 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2450 if (mDockState != dockState) { 2451 mDockState = dockState; 2452 mDirty |= DIRTY_DOCK_STATE; 2453 updatePowerStateLocked(); 2454 } 2455 } 2456 } 2457 } 2458 2459 private final class SettingsObserver extends ContentObserver { 2460 public SettingsObserver(Handler handler) { 2461 super(handler); 2462 } 2463 2464 @Override 2465 public void onChange(boolean selfChange, Uri uri) { 2466 synchronized (mLock) { 2467 handleSettingsChangedLocked(); 2468 } 2469 } 2470 } 2471 2472 /** 2473 * Handler for asynchronous operations performed by the power manager. 2474 */ 2475 private final class PowerManagerHandler extends Handler { 2476 public PowerManagerHandler(Looper looper) { 2477 super(looper, null, true /*async*/); 2478 } 2479 2480 @Override 2481 public void handleMessage(Message msg) { 2482 switch (msg.what) { 2483 case MSG_USER_ACTIVITY_TIMEOUT: 2484 handleUserActivityTimeout(); 2485 break; 2486 case MSG_SANDMAN: 2487 handleSandman(); 2488 break; 2489 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2490 handleScreenOnBlockerReleased(); 2491 break; 2492 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2493 checkIfBootAnimationFinished(); 2494 break; 2495 } 2496 } 2497 } 2498 2499 /** 2500 * Represents a wake lock that has been acquired by an application. 2501 */ 2502 private final class WakeLock implements IBinder.DeathRecipient { 2503 public final IBinder mLock; 2504 public int mFlags; 2505 public String mTag; 2506 public final String mPackageName; 2507 public WorkSource mWorkSource; 2508 public String mHistoryTag; 2509 public final int mOwnerUid; 2510 public final int mOwnerPid; 2511 public boolean mNotifiedAcquired; 2512 2513 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2514 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2515 mLock = lock; 2516 mFlags = flags; 2517 mTag = tag; 2518 mPackageName = packageName; 2519 mWorkSource = copyWorkSource(workSource); 2520 mHistoryTag = historyTag; 2521 mOwnerUid = ownerUid; 2522 mOwnerPid = ownerPid; 2523 } 2524 2525 @Override 2526 public void binderDied() { 2527 PowerManagerService.this.handleWakeLockDeath(this); 2528 } 2529 2530 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2531 int ownerUid, int ownerPid) { 2532 return mFlags == flags 2533 && mTag.equals(tag) 2534 && hasSameWorkSource(workSource) 2535 && mOwnerUid == ownerUid 2536 && mOwnerPid == ownerPid; 2537 } 2538 2539 public void updateProperties(int flags, String tag, String packageName, 2540 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2541 if (!mPackageName.equals(packageName)) { 2542 throw new IllegalStateException("Existing wake lock package name changed: " 2543 + mPackageName + " to " + packageName); 2544 } 2545 if (mOwnerUid != ownerUid) { 2546 throw new IllegalStateException("Existing wake lock uid changed: " 2547 + mOwnerUid + " to " + ownerUid); 2548 } 2549 if (mOwnerPid != ownerPid) { 2550 throw new IllegalStateException("Existing wake lock pid changed: " 2551 + mOwnerPid + " to " + ownerPid); 2552 } 2553 mFlags = flags; 2554 mTag = tag; 2555 updateWorkSource(workSource); 2556 mHistoryTag = historyTag; 2557 } 2558 2559 public boolean hasSameWorkSource(WorkSource workSource) { 2560 return Objects.equal(mWorkSource, workSource); 2561 } 2562 2563 public void updateWorkSource(WorkSource workSource) { 2564 mWorkSource = copyWorkSource(workSource); 2565 } 2566 2567 @Override 2568 public String toString() { 2569 return getLockLevelString() 2570 + " '" + mTag + "'" + getLockFlagsString() 2571 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2572 } 2573 2574 @SuppressWarnings("deprecation") 2575 private String getLockLevelString() { 2576 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2577 case PowerManager.FULL_WAKE_LOCK: 2578 return "FULL_WAKE_LOCK "; 2579 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2580 return "SCREEN_BRIGHT_WAKE_LOCK "; 2581 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2582 return "SCREEN_DIM_WAKE_LOCK "; 2583 case PowerManager.PARTIAL_WAKE_LOCK: 2584 return "PARTIAL_WAKE_LOCK "; 2585 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2586 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2587 case PowerManager.DOZE_WAKE_LOCK: 2588 return "DOZE_WAKE_LOCK "; 2589 default: 2590 return "??? "; 2591 } 2592 } 2593 2594 private String getLockFlagsString() { 2595 String result = ""; 2596 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2597 result += " ACQUIRE_CAUSES_WAKEUP"; 2598 } 2599 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2600 result += " ON_AFTER_RELEASE"; 2601 } 2602 return result; 2603 } 2604 } 2605 2606 private final class SuspendBlockerImpl implements SuspendBlocker { 2607 private final String mName; 2608 private int mReferenceCount; 2609 2610 public SuspendBlockerImpl(String name) { 2611 mName = name; 2612 } 2613 2614 @Override 2615 protected void finalize() throws Throwable { 2616 try { 2617 if (mReferenceCount != 0) { 2618 Log.wtf(TAG, "Suspend blocker \"" + mName 2619 + "\" was finalized without being released!"); 2620 mReferenceCount = 0; 2621 nativeReleaseSuspendBlocker(mName); 2622 } 2623 } finally { 2624 super.finalize(); 2625 } 2626 } 2627 2628 @Override 2629 public void acquire() { 2630 synchronized (this) { 2631 mReferenceCount += 1; 2632 if (mReferenceCount == 1) { 2633 if (DEBUG_SPEW) { 2634 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2635 } 2636 nativeAcquireSuspendBlocker(mName); 2637 } 2638 } 2639 } 2640 2641 @Override 2642 public void release() { 2643 synchronized (this) { 2644 mReferenceCount -= 1; 2645 if (mReferenceCount == 0) { 2646 if (DEBUG_SPEW) { 2647 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2648 } 2649 nativeReleaseSuspendBlocker(mName); 2650 } else if (mReferenceCount < 0) { 2651 Log.wtf(TAG, "Suspend blocker \"" + mName 2652 + "\" was released without being acquired!", new Throwable()); 2653 mReferenceCount = 0; 2654 } 2655 } 2656 } 2657 2658 @Override 2659 public String toString() { 2660 synchronized (this) { 2661 return mName + ": ref count=" + mReferenceCount; 2662 } 2663 } 2664 } 2665 2666 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2667 private int mNestCount; 2668 2669 public boolean isHeld() { 2670 synchronized (this) { 2671 return mNestCount != 0; 2672 } 2673 } 2674 2675 @Override 2676 public void acquire() { 2677 synchronized (this) { 2678 mNestCount += 1; 2679 if (DEBUG) { 2680 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2681 } 2682 } 2683 } 2684 2685 @Override 2686 public void release() { 2687 synchronized (this) { 2688 mNestCount -= 1; 2689 if (mNestCount < 0) { 2690 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2691 new Throwable()); 2692 mNestCount = 0; 2693 } 2694 if (mNestCount == 0) { 2695 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2696 } 2697 if (DEBUG) { 2698 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2699 } 2700 } 2701 } 2702 2703 @Override 2704 public String toString() { 2705 synchronized (this) { 2706 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2707 } 2708 } 2709 } 2710 2711 private final class BinderService extends IPowerManager.Stub { 2712 @Override // Binder call 2713 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2714 String packageName, int uid) { 2715 if (uid < 0) { 2716 uid = Binder.getCallingUid(); 2717 } 2718 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2719 } 2720 2721 @Override // Binder call 2722 public void powerHint(int hintId, int data) { 2723 if (!mSystemReady) { 2724 // Service not ready yet, so who the heck cares about power hints, bah. 2725 return; 2726 } 2727 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2728 powerHintInternal(hintId, data); 2729 } 2730 2731 @Override // Binder call 2732 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2733 WorkSource ws, String historyTag) { 2734 if (lock == null) { 2735 throw new IllegalArgumentException("lock must not be null"); 2736 } 2737 if (packageName == null) { 2738 throw new IllegalArgumentException("packageName must not be null"); 2739 } 2740 PowerManager.validateWakeLockParameters(flags, tag); 2741 2742 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2743 if (ws != null && ws.size() != 0) { 2744 mContext.enforceCallingOrSelfPermission( 2745 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2746 } else { 2747 ws = null; 2748 } 2749 2750 final int uid = Binder.getCallingUid(); 2751 final int pid = Binder.getCallingPid(); 2752 final long ident = Binder.clearCallingIdentity(); 2753 try { 2754 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2755 } finally { 2756 Binder.restoreCallingIdentity(ident); 2757 } 2758 } 2759 2760 @Override // Binder call 2761 public void releaseWakeLock(IBinder lock, int flags) { 2762 if (lock == null) { 2763 throw new IllegalArgumentException("lock must not be null"); 2764 } 2765 2766 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2767 2768 final long ident = Binder.clearCallingIdentity(); 2769 try { 2770 releaseWakeLockInternal(lock, flags); 2771 } finally { 2772 Binder.restoreCallingIdentity(ident); 2773 } 2774 } 2775 2776 @Override // Binder call 2777 public void updateWakeLockUids(IBinder lock, int[] uids) { 2778 WorkSource ws = null; 2779 2780 if (uids != null) { 2781 ws = new WorkSource(); 2782 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2783 // one at a time? 2784 for (int i = 0; i < uids.length; i++) { 2785 ws.add(uids[i]); 2786 } 2787 } 2788 updateWakeLockWorkSource(lock, ws, null); 2789 } 2790 2791 @Override // Binder call 2792 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2793 if (lock == null) { 2794 throw new IllegalArgumentException("lock must not be null"); 2795 } 2796 2797 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2798 if (ws != null && ws.size() != 0) { 2799 mContext.enforceCallingOrSelfPermission( 2800 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2801 } else { 2802 ws = null; 2803 } 2804 2805 final long ident = Binder.clearCallingIdentity(); 2806 try { 2807 updateWakeLockWorkSourceInternal(lock, ws, historyTag); 2808 } finally { 2809 Binder.restoreCallingIdentity(ident); 2810 } 2811 } 2812 2813 @Override // Binder call 2814 public boolean isWakeLockLevelSupported(int level) { 2815 final long ident = Binder.clearCallingIdentity(); 2816 try { 2817 return isWakeLockLevelSupportedInternal(level); 2818 } finally { 2819 Binder.restoreCallingIdentity(ident); 2820 } 2821 } 2822 2823 @Override // Binder call 2824 public void userActivity(long eventTime, int event, int flags) { 2825 final long now = SystemClock.uptimeMillis(); 2826 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2827 != PackageManager.PERMISSION_GRANTED) { 2828 // Once upon a time applications could call userActivity(). 2829 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2830 // request instead of throwing a SecurityException so we don't break old apps. 2831 synchronized (mLock) { 2832 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2833 mLastWarningAboutUserActivityPermission = now; 2834 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2835 + "caller does not have DEVICE_POWER permission. " 2836 + "Please fix your app! " 2837 + " pid=" + Binder.getCallingPid() 2838 + " uid=" + Binder.getCallingUid()); 2839 } 2840 } 2841 return; 2842 } 2843 2844 if (eventTime > SystemClock.uptimeMillis()) { 2845 throw new IllegalArgumentException("event time must not be in the future"); 2846 } 2847 2848 final int uid = Binder.getCallingUid(); 2849 final long ident = Binder.clearCallingIdentity(); 2850 try { 2851 userActivityInternal(eventTime, event, flags, uid); 2852 } finally { 2853 Binder.restoreCallingIdentity(ident); 2854 } 2855 } 2856 2857 @Override // Binder call 2858 public void wakeUp(long eventTime) { 2859 if (eventTime > SystemClock.uptimeMillis()) { 2860 throw new IllegalArgumentException("event time must not be in the future"); 2861 } 2862 2863 mContext.enforceCallingOrSelfPermission( 2864 android.Manifest.permission.DEVICE_POWER, null); 2865 2866 final int uid = Binder.getCallingUid(); 2867 final long ident = Binder.clearCallingIdentity(); 2868 try { 2869 wakeUpInternal(eventTime, uid); 2870 } finally { 2871 Binder.restoreCallingIdentity(ident); 2872 } 2873 } 2874 2875 @Override // Binder call 2876 public void goToSleep(long eventTime, int reason, int flags) { 2877 if (eventTime > SystemClock.uptimeMillis()) { 2878 throw new IllegalArgumentException("event time must not be in the future"); 2879 } 2880 2881 mContext.enforceCallingOrSelfPermission( 2882 android.Manifest.permission.DEVICE_POWER, null); 2883 2884 final int uid = Binder.getCallingUid(); 2885 final long ident = Binder.clearCallingIdentity(); 2886 try { 2887 goToSleepInternal(eventTime, reason, flags, uid); 2888 } finally { 2889 Binder.restoreCallingIdentity(ident); 2890 } 2891 } 2892 2893 @Override // Binder call 2894 public void nap(long eventTime) { 2895 if (eventTime > SystemClock.uptimeMillis()) { 2896 throw new IllegalArgumentException("event time must not be in the future"); 2897 } 2898 2899 mContext.enforceCallingOrSelfPermission( 2900 android.Manifest.permission.DEVICE_POWER, null); 2901 2902 final int uid = Binder.getCallingUid(); 2903 final long ident = Binder.clearCallingIdentity(); 2904 try { 2905 napInternal(eventTime, uid); 2906 } finally { 2907 Binder.restoreCallingIdentity(ident); 2908 } 2909 } 2910 2911 @Override // Binder call 2912 public boolean isInteractive() { 2913 final long ident = Binder.clearCallingIdentity(); 2914 try { 2915 return isInteractiveInternal(); 2916 } finally { 2917 Binder.restoreCallingIdentity(ident); 2918 } 2919 } 2920 2921 @Override // Binder call 2922 public boolean isPowerSaveMode() { 2923 final long ident = Binder.clearCallingIdentity(); 2924 try { 2925 return isLowPowerModeInternal(); 2926 } finally { 2927 Binder.restoreCallingIdentity(ident); 2928 } 2929 } 2930 2931 /** 2932 * Reboots the device. 2933 * 2934 * @param confirm If true, shows a reboot confirmation dialog. 2935 * @param reason The reason for the reboot, or null if none. 2936 * @param wait If true, this call waits for the reboot to complete and does not return. 2937 */ 2938 @Override // Binder call 2939 public void reboot(boolean confirm, String reason, boolean wait) { 2940 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2941 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2942 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2943 } 2944 2945 final long ident = Binder.clearCallingIdentity(); 2946 try { 2947 shutdownOrRebootInternal(false, confirm, reason, wait); 2948 } finally { 2949 Binder.restoreCallingIdentity(ident); 2950 } 2951 } 2952 2953 /** 2954 * Shuts down the device. 2955 * 2956 * @param confirm If true, shows a shutdown confirmation dialog. 2957 * @param wait If true, this call waits for the shutdown to complete and does not return. 2958 */ 2959 @Override // Binder call 2960 public void shutdown(boolean confirm, boolean wait) { 2961 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2962 2963 final long ident = Binder.clearCallingIdentity(); 2964 try { 2965 shutdownOrRebootInternal(true, confirm, null, wait); 2966 } finally { 2967 Binder.restoreCallingIdentity(ident); 2968 } 2969 } 2970 2971 /** 2972 * Crash the runtime (causing a complete restart of the Android framework). 2973 * Requires REBOOT permission. Mostly for testing. Should not return. 2974 */ 2975 @Override // Binder call 2976 public void crash(String message) { 2977 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2978 2979 final long ident = Binder.clearCallingIdentity(); 2980 try { 2981 crashInternal(message); 2982 } finally { 2983 Binder.restoreCallingIdentity(ident); 2984 } 2985 } 2986 2987 /** 2988 * Set the setting that determines whether the device stays on when plugged in. 2989 * The argument is a bit string, with each bit specifying a power source that, 2990 * when the device is connected to that source, causes the device to stay on. 2991 * See {@link android.os.BatteryManager} for the list of power sources that 2992 * can be specified. Current values include 2993 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2994 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2995 * 2996 * Used by "adb shell svc power stayon ..." 2997 * 2998 * @param val an {@code int} containing the bits that specify which power sources 2999 * should cause the device to stay on. 3000 */ 3001 @Override // Binder call 3002 public void setStayOnSetting(int val) { 3003 mContext.enforceCallingOrSelfPermission( 3004 android.Manifest.permission.WRITE_SETTINGS, null); 3005 3006 final long ident = Binder.clearCallingIdentity(); 3007 try { 3008 setStayOnSettingInternal(val); 3009 } finally { 3010 Binder.restoreCallingIdentity(ident); 3011 } 3012 } 3013 3014 /** 3015 * Used by device administration to set the maximum screen off timeout. 3016 * 3017 * This method must only be called by the device administration policy manager. 3018 */ 3019 @Override // Binder call 3020 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 3021 final long ident = Binder.clearCallingIdentity(); 3022 try { 3023 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 3024 } finally { 3025 Binder.restoreCallingIdentity(ident); 3026 } 3027 } 3028 3029 /** 3030 * Used by the settings application and brightness control widgets to 3031 * temporarily override the current screen brightness setting so that the 3032 * user can observe the effect of an intended settings change without applying 3033 * it immediately. 3034 * 3035 * The override will be canceled when the setting value is next updated. 3036 * 3037 * @param brightness The overridden brightness. 3038 * 3039 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 3040 */ 3041 @Override // Binder call 3042 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 3043 mContext.enforceCallingOrSelfPermission( 3044 android.Manifest.permission.DEVICE_POWER, null); 3045 3046 final long ident = Binder.clearCallingIdentity(); 3047 try { 3048 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 3049 } finally { 3050 Binder.restoreCallingIdentity(ident); 3051 } 3052 } 3053 3054 /** 3055 * Used by the settings application and brightness control widgets to 3056 * temporarily override the current screen auto-brightness adjustment setting so that the 3057 * user can observe the effect of an intended settings change without applying 3058 * it immediately. 3059 * 3060 * The override will be canceled when the setting value is next updated. 3061 * 3062 * @param adj The overridden brightness, or Float.NaN to disable the override. 3063 * 3064 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 3065 */ 3066 @Override // Binder call 3067 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 3068 mContext.enforceCallingOrSelfPermission( 3069 android.Manifest.permission.DEVICE_POWER, null); 3070 3071 final long ident = Binder.clearCallingIdentity(); 3072 try { 3073 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 3074 } finally { 3075 Binder.restoreCallingIdentity(ident); 3076 } 3077 } 3078 3079 /** 3080 * Used by the phone application to make the attention LED flash when ringing. 3081 */ 3082 @Override // Binder call 3083 public void setAttentionLight(boolean on, int color) { 3084 mContext.enforceCallingOrSelfPermission( 3085 android.Manifest.permission.DEVICE_POWER, null); 3086 3087 final long ident = Binder.clearCallingIdentity(); 3088 try { 3089 setAttentionLightInternal(on, color); 3090 } finally { 3091 Binder.restoreCallingIdentity(ident); 3092 } 3093 } 3094 3095 @Override // Binder call 3096 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3097 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 3098 != PackageManager.PERMISSION_GRANTED) { 3099 pw.println("Permission Denial: can't dump PowerManager from from pid=" 3100 + Binder.getCallingPid() 3101 + ", uid=" + Binder.getCallingUid()); 3102 return; 3103 } 3104 3105 final long ident = Binder.clearCallingIdentity(); 3106 try { 3107 dumpInternal(pw); 3108 } finally { 3109 Binder.restoreCallingIdentity(ident); 3110 } 3111 } 3112 } 3113 3114 private final class LocalService extends PowerManagerInternal { 3115 @Override 3116 public void setScreenBrightnessOverrideFromWindowManager(int screenBrightness) { 3117 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3118 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3119 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3120 } 3121 setScreenBrightnessOverrideFromWindowManagerInternal(screenBrightness); 3122 } 3123 3124 @Override 3125 public void setButtonBrightnessOverrideFromWindowManager(int screenBrightness) { 3126 // Do nothing. 3127 // Button lights are not currently supported in the new implementation. 3128 } 3129 3130 @Override 3131 public void setDozeOverrideFromDreamManager(int screenState, int screenBrightness) { 3132 switch (screenState) { 3133 case Display.STATE_UNKNOWN: 3134 case Display.STATE_OFF: 3135 case Display.STATE_DOZE: 3136 case Display.STATE_DOZE_SUSPEND: 3137 case Display.STATE_ON: 3138 break; 3139 default: 3140 screenState = Display.STATE_UNKNOWN; 3141 break; 3142 } 3143 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3144 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3145 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3146 } 3147 setDozeOverrideFromDreamManagerInternal(screenState, screenBrightness); 3148 } 3149 3150 @Override 3151 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 3152 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 3153 } 3154 3155 @Override 3156 public boolean getLowPowerModeEnabled() { 3157 synchronized (mLock) { 3158 return mLowPowerModeEnabled; 3159 } 3160 } 3161 3162 @Override 3163 public void registerLowPowerModeObserver(LowPowerModeListener listener) { 3164 synchronized (mLock) { 3165 mLowPowerModeListeners.add(listener); 3166 } 3167 } 3168 } 3169} 3170