PowerManagerService.java revision d953c53d3b04d772bb1b62ede1c2011641ca82b5
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 int callingUid) { 870 synchronized (mLock) { 871 int index = findWakeLockIndexLocked(lock); 872 if (index < 0) { 873 if (DEBUG_SPEW) { 874 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 875 + " [not found], ws=" + ws); 876 } 877 throw new IllegalArgumentException("Wake lock not active: " + lock 878 + " from uid " + callingUid); 879 } 880 881 WakeLock wakeLock = mWakeLocks.get(index); 882 if (DEBUG_SPEW) { 883 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 884 + " [" + wakeLock.mTag + "], ws=" + ws); 885 } 886 887 if (!wakeLock.hasSameWorkSource(ws)) { 888 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 889 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 890 ws, historyTag); 891 wakeLock.mHistoryTag = historyTag; 892 wakeLock.updateWorkSource(ws); 893 } 894 } 895 } 896 897 private int findWakeLockIndexLocked(IBinder lock) { 898 final int count = mWakeLocks.size(); 899 for (int i = 0; i < count; i++) { 900 if (mWakeLocks.get(i).mLock == lock) { 901 return i; 902 } 903 } 904 return -1; 905 } 906 907 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 908 if (mSystemReady) { 909 wakeLock.mNotifiedAcquired = true; 910 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 911 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 912 wakeLock.mHistoryTag); 913 } 914 } 915 916 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 917 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 918 if (mSystemReady && wakeLock.mNotifiedAcquired) { 919 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 920 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 921 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 922 } 923 } 924 925 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 926 if (mSystemReady && wakeLock.mNotifiedAcquired) { 927 wakeLock.mNotifiedAcquired = false; 928 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, 929 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 930 wakeLock.mWorkSource, wakeLock.mHistoryTag); 931 } 932 } 933 934 @SuppressWarnings("deprecation") 935 private boolean isWakeLockLevelSupportedInternal(int level) { 936 synchronized (mLock) { 937 switch (level) { 938 case PowerManager.PARTIAL_WAKE_LOCK: 939 case PowerManager.SCREEN_DIM_WAKE_LOCK: 940 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 941 case PowerManager.FULL_WAKE_LOCK: 942 case PowerManager.DOZE_WAKE_LOCK: 943 return true; 944 945 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 946 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 947 948 default: 949 return false; 950 } 951 } 952 } 953 954 // Called from native code. 955 private void userActivityFromNative(long eventTime, int event, int flags) { 956 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 957 } 958 959 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 960 synchronized (mLock) { 961 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 962 updatePowerStateLocked(); 963 } 964 } 965 } 966 967 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 968 if (DEBUG_SPEW) { 969 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 970 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 971 + ", uid=" + uid); 972 } 973 974 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 975 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 976 || !mBootCompleted || !mSystemReady) { 977 return false; 978 } 979 980 mNotifier.onUserActivity(event, uid); 981 982 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 983 if (eventTime > mLastUserActivityTimeNoChangeLights 984 && eventTime > mLastUserActivityTime) { 985 mLastUserActivityTimeNoChangeLights = eventTime; 986 mDirty |= DIRTY_USER_ACTIVITY; 987 return true; 988 } 989 } else { 990 if (eventTime > mLastUserActivityTime) { 991 mLastUserActivityTime = eventTime; 992 mDirty |= DIRTY_USER_ACTIVITY; 993 return true; 994 } 995 } 996 return false; 997 } 998 999 private void wakeUpInternal(long eventTime, int uid) { 1000 synchronized (mLock) { 1001 if (wakeUpNoUpdateLocked(eventTime, uid)) { 1002 updatePowerStateLocked(); 1003 } 1004 } 1005 } 1006 1007 private boolean wakeUpNoUpdateLocked(long eventTime, int uid) { 1008 if (DEBUG_SPEW) { 1009 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime + ", uid=" + uid); 1010 } 1011 1012 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 1013 || !mBootCompleted || !mSystemReady) { 1014 return false; 1015 } 1016 1017 switch (mWakefulness) { 1018 case WAKEFULNESS_ASLEEP: 1019 Slog.i(TAG, "Waking up from sleep (uid " + uid +")..."); 1020 break; 1021 case WAKEFULNESS_DREAMING: 1022 Slog.i(TAG, "Waking up from dream (uid " + uid +")..."); 1023 break; 1024 case WAKEFULNESS_DOZING: 1025 Slog.i(TAG, "Waking up from dozing (uid " + uid +")..."); 1026 break; 1027 } 1028 1029 mLastWakeTime = eventTime; 1030 mDirty |= DIRTY_WAKEFULNESS; 1031 mWakefulness = WAKEFULNESS_AWAKE; 1032 setInteractiveStateLocked(true, 0); 1033 1034 userActivityNoUpdateLocked( 1035 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, uid); 1036 return true; 1037 } 1038 1039 private void goToSleepInternal(long eventTime, int reason, int flags, int uid) { 1040 synchronized (mLock) { 1041 if (goToSleepNoUpdateLocked(eventTime, reason, flags, uid)) { 1042 updatePowerStateLocked(); 1043 } 1044 } 1045 } 1046 1047 // This method is called goToSleep for historical reasons but we actually start 1048 // dozing before really going to sleep. 1049 @SuppressWarnings("deprecation") 1050 private boolean goToSleepNoUpdateLocked(long eventTime, int reason, int flags, int uid) { 1051 if (DEBUG_SPEW) { 1052 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime 1053 + ", reason=" + reason + ", flags=" + flags + ", uid=" + uid); 1054 } 1055 1056 if (eventTime < mLastWakeTime 1057 || mWakefulness == WAKEFULNESS_ASLEEP 1058 || mWakefulness == WAKEFULNESS_DOZING 1059 || !mBootCompleted || !mSystemReady) { 1060 return false; 1061 } 1062 1063 switch (reason) { 1064 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 1065 Slog.i(TAG, "Going to sleep due to device administration policy " 1066 + "(uid " + uid +")..."); 1067 break; 1068 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 1069 Slog.i(TAG, "Going to sleep due to screen timeout (uid " + uid +")..."); 1070 break; 1071 case PowerManager.GO_TO_SLEEP_REASON_LID_SWITCH: 1072 Slog.i(TAG, "Going to sleep due to lid switch (uid " + uid +")..."); 1073 break; 1074 case PowerManager.GO_TO_SLEEP_REASON_POWER_BUTTON: 1075 Slog.i(TAG, "Going to sleep due to power button (uid " + uid +")..."); 1076 break; 1077 case PowerManager.GO_TO_SLEEP_REASON_HDMI: 1078 Slog.i(TAG, "Going to sleep due to HDMI standby (uid " + uid +")..."); 1079 break; 1080 default: 1081 Slog.i(TAG, "Going to sleep by application request (uid " + uid +")..."); 1082 reason = PowerManager.GO_TO_SLEEP_REASON_APPLICATION; 1083 break; 1084 } 1085 1086 mLastSleepTime = eventTime; 1087 mDirty |= DIRTY_WAKEFULNESS; 1088 mWakefulness = WAKEFULNESS_DOZING; 1089 mSandmanSummoned = true; 1090 setInteractiveStateLocked(false, reason); 1091 1092 // Report the number of wake locks that will be cleared by going to sleep. 1093 int numWakeLocksCleared = 0; 1094 final int numWakeLocks = mWakeLocks.size(); 1095 for (int i = 0; i < numWakeLocks; i++) { 1096 final WakeLock wakeLock = mWakeLocks.get(i); 1097 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1098 case PowerManager.FULL_WAKE_LOCK: 1099 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1100 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1101 numWakeLocksCleared += 1; 1102 break; 1103 } 1104 } 1105 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 1106 1107 // Skip dozing if requested. 1108 if ((flags & PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE) != 0) { 1109 reallyGoToSleepNoUpdateLocked(eventTime, uid); 1110 } 1111 return true; 1112 } 1113 1114 private void napInternal(long eventTime, int uid) { 1115 synchronized (mLock) { 1116 if (napNoUpdateLocked(eventTime, uid)) { 1117 updatePowerStateLocked(); 1118 } 1119 } 1120 } 1121 1122 private boolean napNoUpdateLocked(long eventTime, int uid) { 1123 if (DEBUG_SPEW) { 1124 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime + ", uid=" + uid); 1125 } 1126 1127 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1128 || !mBootCompleted || !mSystemReady) { 1129 return false; 1130 } 1131 1132 Slog.i(TAG, "Nap time (uid " + uid +")..."); 1133 1134 mDirty |= DIRTY_WAKEFULNESS; 1135 mWakefulness = WAKEFULNESS_DREAMING; 1136 mSandmanSummoned = true; 1137 setInteractiveStateLocked(true, 0); 1138 return true; 1139 } 1140 1141 // Done dozing, drop everything and go to sleep. 1142 private boolean reallyGoToSleepNoUpdateLocked(long eventTime, int uid) { 1143 if (DEBUG_SPEW) { 1144 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime 1145 + ", uid=" + uid); 1146 } 1147 1148 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1149 || !mBootCompleted || !mSystemReady) { 1150 return false; 1151 } 1152 1153 Slog.i(TAG, "Sleeping (uid " + uid +")..."); 1154 1155 mDirty |= DIRTY_WAKEFULNESS; 1156 mWakefulness = WAKEFULNESS_ASLEEP; 1157 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1158 return true; 1159 } 1160 1161 private void setInteractiveStateLocked(boolean interactive, int reason) { 1162 if (mInteractive != interactive) { 1163 finishInteractiveStateChangeLocked(); 1164 1165 mInteractive = interactive; 1166 mInteractiveChanging = true; 1167 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1168 } 1169 } 1170 1171 private void finishInteractiveStateChangeLocked() { 1172 if (mInteractiveChanging) { 1173 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1174 mInteractiveChanging = false; 1175 } 1176 } 1177 1178 /** 1179 * Updates the global power state based on dirty bits recorded in mDirty. 1180 * 1181 * This is the main function that performs power state transitions. 1182 * We centralize them here so that we can recompute the power state completely 1183 * each time something important changes, and ensure that we do it the same 1184 * way each time. The point is to gather all of the transition logic here. 1185 */ 1186 private void updatePowerStateLocked() { 1187 if (!mSystemReady || mDirty == 0) { 1188 return; 1189 } 1190 if (!Thread.holdsLock(mLock)) { 1191 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1192 } 1193 1194 // Phase 0: Basic state updates. 1195 updateIsPoweredLocked(mDirty); 1196 updateStayOnLocked(mDirty); 1197 1198 // Phase 1: Update wakefulness. 1199 // Loop because the wake lock and user activity computations are influenced 1200 // by changes in wakefulness. 1201 final long now = SystemClock.uptimeMillis(); 1202 int dirtyPhase2 = 0; 1203 for (;;) { 1204 int dirtyPhase1 = mDirty; 1205 dirtyPhase2 |= dirtyPhase1; 1206 mDirty = 0; 1207 1208 updateWakeLockSummaryLocked(dirtyPhase1); 1209 updateUserActivitySummaryLocked(now, dirtyPhase1); 1210 if (!updateWakefulnessLocked(dirtyPhase1)) { 1211 break; 1212 } 1213 } 1214 1215 // Phase 2: Update dreams and display power state. 1216 updateDreamLocked(dirtyPhase2); 1217 updateDisplayPowerStateLocked(dirtyPhase2); 1218 1219 // Phase 3: Send notifications, if needed. 1220 if (mDisplayReady) { 1221 finishInteractiveStateChangeLocked(); 1222 } 1223 1224 // Phase 4: Update suspend blocker. 1225 // Because we might release the last suspend blocker here, we need to make sure 1226 // we finished everything else first! 1227 updateSuspendBlockerLocked(); 1228 } 1229 1230 /** 1231 * Updates the value of mIsPowered. 1232 * Sets DIRTY_IS_POWERED if a change occurred. 1233 */ 1234 private void updateIsPoweredLocked(int dirty) { 1235 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1236 final boolean wasPowered = mIsPowered; 1237 final int oldPlugType = mPlugType; 1238 final boolean oldLevelLow = mBatteryLevelLow; 1239 mIsPowered = mBatteryManagerInternal.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1240 mPlugType = mBatteryManagerInternal.getPlugType(); 1241 mBatteryLevel = mBatteryManagerInternal.getBatteryLevel(); 1242 mBatteryLevelLow = mBatteryManagerInternal.getBatteryLevelLow(); 1243 1244 if (DEBUG_SPEW) { 1245 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1246 + ", mIsPowered=" + mIsPowered 1247 + ", oldPlugType=" + oldPlugType 1248 + ", mPlugType=" + mPlugType 1249 + ", mBatteryLevel=" + mBatteryLevel); 1250 } 1251 1252 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1253 mDirty |= DIRTY_IS_POWERED; 1254 1255 // Update wireless dock detection state. 1256 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1257 mIsPowered, mPlugType, mBatteryLevel); 1258 1259 // Treat plugging and unplugging the devices as a user activity. 1260 // Users find it disconcerting when they plug or unplug the device 1261 // and it shuts off right away. 1262 // Some devices also wake the device when plugged or unplugged because 1263 // they don't have a charging LED. 1264 final long now = SystemClock.uptimeMillis(); 1265 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1266 dockedOnWirelessCharger)) { 1267 wakeUpNoUpdateLocked(now, Process.SYSTEM_UID); 1268 } 1269 userActivityNoUpdateLocked( 1270 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1271 1272 // Tell the notifier whether wireless charging has started so that 1273 // it can provide feedback to the user. 1274 if (dockedOnWirelessCharger) { 1275 mNotifier.onWirelessChargingStarted(); 1276 } 1277 } 1278 1279 if (wasPowered != mIsPowered || oldLevelLow != mBatteryLevelLow) { 1280 if (oldLevelLow != mBatteryLevelLow && !mBatteryLevelLow) { 1281 if (DEBUG_SPEW) { 1282 Slog.d(TAG, "updateIsPoweredLocked: resetting low power snooze"); 1283 } 1284 mAutoLowPowerModeSnoozing = false; 1285 } 1286 updateLowPowerModeLocked(); 1287 } 1288 } 1289 } 1290 1291 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1292 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1293 // Don't wake when powered unless configured to do so. 1294 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1295 return false; 1296 } 1297 1298 // Don't wake when undocked from wireless charger. 1299 // See WirelessChargerDetector for justification. 1300 if (wasPowered && !mIsPowered 1301 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1302 return false; 1303 } 1304 1305 // Don't wake when docked on wireless charger unless we are certain of it. 1306 // See WirelessChargerDetector for justification. 1307 if (!wasPowered && mIsPowered 1308 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1309 && !dockedOnWirelessCharger) { 1310 return false; 1311 } 1312 1313 // If already dreaming and becoming powered, then don't wake. 1314 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1315 return false; 1316 } 1317 1318 // Otherwise wake up! 1319 return true; 1320 } 1321 1322 /** 1323 * Updates the value of mStayOn. 1324 * Sets DIRTY_STAY_ON if a change occurred. 1325 */ 1326 private void updateStayOnLocked(int dirty) { 1327 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1328 final boolean wasStayOn = mStayOn; 1329 if (mStayOnWhilePluggedInSetting != 0 1330 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1331 mStayOn = mBatteryManagerInternal.isPowered(mStayOnWhilePluggedInSetting); 1332 } else { 1333 mStayOn = false; 1334 } 1335 1336 if (mStayOn != wasStayOn) { 1337 mDirty |= DIRTY_STAY_ON; 1338 } 1339 } 1340 } 1341 1342 /** 1343 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1344 * Note that most wake-locks are ignored when the system is asleep. 1345 * 1346 * This function must have no other side-effects. 1347 */ 1348 @SuppressWarnings("deprecation") 1349 private void updateWakeLockSummaryLocked(int dirty) { 1350 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1351 mWakeLockSummary = 0; 1352 1353 final int numWakeLocks = mWakeLocks.size(); 1354 for (int i = 0; i < numWakeLocks; i++) { 1355 final WakeLock wakeLock = mWakeLocks.get(i); 1356 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1357 case PowerManager.PARTIAL_WAKE_LOCK: 1358 mWakeLockSummary |= WAKE_LOCK_CPU; 1359 break; 1360 case PowerManager.FULL_WAKE_LOCK: 1361 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1362 break; 1363 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1364 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1365 break; 1366 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1367 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1368 break; 1369 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1370 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1371 break; 1372 case PowerManager.DOZE_WAKE_LOCK: 1373 mWakeLockSummary |= WAKE_LOCK_DOZE; 1374 break; 1375 } 1376 } 1377 1378 // Cancel wake locks that make no sense based on the current state. 1379 if (mWakefulness != WAKEFULNESS_DOZING) { 1380 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1381 } 1382 if (mWakefulness == WAKEFULNESS_ASLEEP 1383 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1384 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1385 | WAKE_LOCK_BUTTON_BRIGHT); 1386 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1387 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1388 } 1389 } 1390 1391 // Infer implied wake locks where necessary based on the current state. 1392 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1393 if (mWakefulness == WAKEFULNESS_AWAKE) { 1394 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1395 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1396 mWakeLockSummary |= WAKE_LOCK_CPU; 1397 } 1398 } 1399 1400 if (DEBUG_SPEW) { 1401 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1402 + wakefulnessToString(mWakefulness) 1403 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1404 } 1405 } 1406 } 1407 1408 /** 1409 * Updates the value of mUserActivitySummary to summarize the user requested 1410 * state of the system such as whether the screen should be bright or dim. 1411 * Note that user activity is ignored when the system is asleep. 1412 * 1413 * This function must have no other side-effects. 1414 */ 1415 private void updateUserActivitySummaryLocked(long now, int dirty) { 1416 // Update the status of the user activity timeout timer. 1417 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1418 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1419 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1420 1421 long nextTimeout = 0; 1422 if (mWakefulness == WAKEFULNESS_AWAKE 1423 || mWakefulness == WAKEFULNESS_DREAMING 1424 || mWakefulness == WAKEFULNESS_DOZING) { 1425 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1426 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1427 1428 mUserActivitySummary = 0; 1429 if (mLastUserActivityTime >= mLastWakeTime) { 1430 nextTimeout = mLastUserActivityTime 1431 + screenOffTimeout - screenDimDuration; 1432 if (now < nextTimeout) { 1433 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1434 } else { 1435 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1436 if (now < nextTimeout) { 1437 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1438 } 1439 } 1440 } 1441 if (mUserActivitySummary == 0 1442 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1443 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1444 if (now < nextTimeout) { 1445 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_BRIGHT) { 1446 mUserActivitySummary = USER_ACTIVITY_SCREEN_BRIGHT; 1447 } else if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DIM) { 1448 mUserActivitySummary = USER_ACTIVITY_SCREEN_DIM; 1449 } 1450 } 1451 } 1452 if (mUserActivitySummary != 0) { 1453 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1454 msg.setAsynchronous(true); 1455 mHandler.sendMessageAtTime(msg, nextTimeout); 1456 } 1457 } else { 1458 mUserActivitySummary = 0; 1459 } 1460 1461 if (DEBUG_SPEW) { 1462 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1463 + wakefulnessToString(mWakefulness) 1464 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1465 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1466 } 1467 } 1468 } 1469 1470 /** 1471 * Called when a user activity timeout has occurred. 1472 * Simply indicates that something about user activity has changed so that the new 1473 * state can be recomputed when the power state is updated. 1474 * 1475 * This function must have no other side-effects besides setting the dirty 1476 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1477 */ 1478 private void handleUserActivityTimeout() { // runs on handler thread 1479 synchronized (mLock) { 1480 if (DEBUG_SPEW) { 1481 Slog.d(TAG, "handleUserActivityTimeout"); 1482 } 1483 1484 mDirty |= DIRTY_USER_ACTIVITY; 1485 updatePowerStateLocked(); 1486 } 1487 } 1488 1489 private int getScreenOffTimeoutLocked() { 1490 int timeout = mScreenOffTimeoutSetting; 1491 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1492 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1493 } 1494 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1495 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1496 } 1497 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1498 } 1499 1500 private int getScreenDimDurationLocked(int screenOffTimeout) { 1501 return Math.min(mMaximumScreenDimDurationConfig, 1502 (int)(screenOffTimeout * mMaximumScreenDimRatioConfig)); 1503 } 1504 1505 /** 1506 * Updates the wakefulness of the device. 1507 * 1508 * This is the function that decides whether the device should start dreaming 1509 * based on the current wake locks and user activity state. It may modify mDirty 1510 * if the wakefulness changes. 1511 * 1512 * Returns true if the wakefulness changed and we need to restart power state calculation. 1513 */ 1514 private boolean updateWakefulnessLocked(int dirty) { 1515 boolean changed = false; 1516 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1517 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1518 | DIRTY_DOCK_STATE)) != 0) { 1519 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1520 if (DEBUG_SPEW) { 1521 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1522 } 1523 final long time = SystemClock.uptimeMillis(); 1524 if (shouldNapAtBedTimeLocked()) { 1525 changed = napNoUpdateLocked(time, Process.SYSTEM_UID); 1526 } else { 1527 changed = goToSleepNoUpdateLocked(time, 1528 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0, Process.SYSTEM_UID); 1529 } 1530 } 1531 } 1532 return changed; 1533 } 1534 1535 /** 1536 * Returns true if the device should automatically nap and start dreaming when the user 1537 * activity timeout has expired and it's bedtime. 1538 */ 1539 private boolean shouldNapAtBedTimeLocked() { 1540 return mDreamsActivateOnSleepSetting 1541 || (mDreamsActivateOnDockSetting 1542 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1543 } 1544 1545 /** 1546 * Returns true if the device should go to sleep now. 1547 * Also used when exiting a dream to determine whether we should go back 1548 * to being fully awake or else go to sleep for good. 1549 */ 1550 private boolean isItBedTimeYetLocked() { 1551 return mBootCompleted && !isBeingKeptAwakeLocked(); 1552 } 1553 1554 /** 1555 * Returns true if the device is being kept awake by a wake lock, user activity 1556 * or the stay on while powered setting. We also keep the phone awake when 1557 * the proximity sensor returns a positive result so that the device does not 1558 * lock while in a phone call. This function only controls whether the device 1559 * will go to sleep or dream which is independent of whether it will be allowed 1560 * to suspend. 1561 */ 1562 private boolean isBeingKeptAwakeLocked() { 1563 return mStayOn 1564 || mProximityPositive 1565 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1566 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1567 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1568 } 1569 1570 /** 1571 * Determines whether to post a message to the sandman to update the dream state. 1572 */ 1573 private void updateDreamLocked(int dirty) { 1574 if ((dirty & (DIRTY_WAKEFULNESS 1575 | DIRTY_USER_ACTIVITY 1576 | DIRTY_WAKE_LOCKS 1577 | DIRTY_BOOT_COMPLETED 1578 | DIRTY_SETTINGS 1579 | DIRTY_IS_POWERED 1580 | DIRTY_STAY_ON 1581 | DIRTY_PROXIMITY_POSITIVE 1582 | DIRTY_BATTERY_STATE)) != 0) { 1583 scheduleSandmanLocked(); 1584 } 1585 } 1586 1587 private void scheduleSandmanLocked() { 1588 if (!mSandmanScheduled) { 1589 mSandmanScheduled = true; 1590 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1591 msg.setAsynchronous(true); 1592 mHandler.sendMessage(msg); 1593 } 1594 } 1595 1596 /** 1597 * Called when the device enters or exits a dreaming or dozing state. 1598 * 1599 * We do this asynchronously because we must call out of the power manager to start 1600 * the dream and we don't want to hold our lock while doing so. There is a risk that 1601 * the device will wake or go to sleep in the meantime so we have to handle that case. 1602 */ 1603 private void handleSandman() { // runs on handler thread 1604 // Handle preconditions. 1605 final boolean startDreaming; 1606 final int wakefulness; 1607 synchronized (mLock) { 1608 mSandmanScheduled = false; 1609 wakefulness = mWakefulness; 1610 if (mSandmanSummoned) { 1611 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1612 || wakefulness == WAKEFULNESS_DOZING); 1613 mSandmanSummoned = false; 1614 } else { 1615 startDreaming = false; 1616 } 1617 } 1618 1619 // Start dreaming if needed. 1620 // We only control the dream on the handler thread, so we don't need to worry about 1621 // concurrent attempts to start or stop the dream. 1622 final boolean isDreaming; 1623 if (mDreamManager != null) { 1624 // Restart the dream whenever the sandman is summoned. 1625 if (startDreaming) { 1626 mDreamManager.stopDream(false /*immediate*/); 1627 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1628 } 1629 isDreaming = mDreamManager.isDreaming(); 1630 } else { 1631 isDreaming = false; 1632 } 1633 1634 // Update dream state. 1635 synchronized (mLock) { 1636 // Remember the initial battery level when the dream started. 1637 if (startDreaming && isDreaming) { 1638 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1639 if (wakefulness == WAKEFULNESS_DOZING) { 1640 Slog.i(TAG, "Dozing..."); 1641 } else { 1642 Slog.i(TAG, "Dreaming..."); 1643 } 1644 } 1645 1646 // If preconditions changed, wait for the next iteration to determine 1647 // whether the dream should continue (or be restarted). 1648 if (mSandmanSummoned || mWakefulness != wakefulness) { 1649 return; // wait for next cycle 1650 } 1651 1652 // Determine whether the dream should continue. 1653 if (wakefulness == WAKEFULNESS_DREAMING) { 1654 if (isDreaming && canDreamLocked()) { 1655 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1656 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1657 - mDreamsBatteryLevelDrainCutoffConfig 1658 && !isBeingKeptAwakeLocked()) { 1659 // If the user activity timeout expired and the battery appears 1660 // to be draining faster than it is charging then stop dreaming 1661 // and go to sleep. 1662 Slog.i(TAG, "Stopping dream because the battery appears to " 1663 + "be draining faster than it is charging. " 1664 + "Battery level when dream started: " 1665 + mBatteryLevelWhenDreamStarted + "%. " 1666 + "Battery level now: " + mBatteryLevel + "%."); 1667 } else { 1668 return; // continue dreaming 1669 } 1670 } 1671 1672 // Dream has ended or will be stopped. Update the power state. 1673 if (isItBedTimeYetLocked()) { 1674 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1675 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0, Process.SYSTEM_UID); 1676 updatePowerStateLocked(); 1677 } else { 1678 wakeUpNoUpdateLocked(SystemClock.uptimeMillis(), Process.SYSTEM_UID); 1679 updatePowerStateLocked(); 1680 } 1681 } else if (wakefulness == WAKEFULNESS_DOZING) { 1682 if (isDreaming) { 1683 return; // continue dozing 1684 } 1685 1686 // Doze has ended or will be stopped. Update the power state. 1687 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis(), Process.SYSTEM_UID); 1688 updatePowerStateLocked(); 1689 } 1690 } 1691 1692 // Stop dream. 1693 if (isDreaming) { 1694 mDreamManager.stopDream(false /*immediate*/); 1695 } 1696 } 1697 1698 /** 1699 * Returns true if the device is allowed to dream in its current state. 1700 * This function is not called when dozing. 1701 */ 1702 private boolean canDreamLocked() { 1703 if (mWakefulness != WAKEFULNESS_DREAMING 1704 || !mDreamsSupportedConfig 1705 || !mDreamsEnabledSetting 1706 || !mDisplayPowerRequest.isBrightOrDim() 1707 || !mBootCompleted) { 1708 return false; 1709 } 1710 if (!isBeingKeptAwakeLocked()) { 1711 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1712 return false; 1713 } 1714 if (!mIsPowered 1715 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1716 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1717 return false; 1718 } 1719 if (mIsPowered 1720 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1721 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1722 return false; 1723 } 1724 } 1725 return true; 1726 } 1727 1728 private void handleScreenOnBlockerReleased() { 1729 synchronized (mLock) { 1730 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1731 updatePowerStateLocked(); 1732 } 1733 } 1734 1735 /** 1736 * Updates the display power state asynchronously. 1737 * When the update is finished, mDisplayReady will be set to true. The display 1738 * controller posts a message to tell us when the actual display power state 1739 * has been updated so we come back here to double-check and finish up. 1740 * 1741 * This function recalculates the display power state each time. 1742 */ 1743 private void updateDisplayPowerStateLocked(int dirty) { 1744 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1745 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1746 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1747 mDisplayPowerRequest.policy = getDesiredScreenPolicyLocked(); 1748 1749 int screenBrightness = mScreenBrightnessSettingDefault; 1750 float screenAutoBrightnessAdjustment = 0.0f; 1751 boolean autoBrightness = (mScreenBrightnessModeSetting == 1752 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1753 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1754 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1755 autoBrightness = false; 1756 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1757 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1758 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1759 screenBrightness = mScreenBrightnessSetting; 1760 } 1761 if (autoBrightness) { 1762 screenBrightness = mScreenBrightnessSettingDefault; 1763 if (isValidAutoBrightnessAdjustment( 1764 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1765 screenAutoBrightnessAdjustment = 1766 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1767 } else if (isValidAutoBrightnessAdjustment( 1768 mScreenAutoBrightnessAdjustmentSetting)) { 1769 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1770 } 1771 } 1772 screenBrightness = Math.max(Math.min(screenBrightness, 1773 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1774 screenAutoBrightnessAdjustment = Math.max(Math.min( 1775 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1776 mDisplayPowerRequest.screenBrightness = screenBrightness; 1777 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1778 screenAutoBrightnessAdjustment; 1779 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1780 1781 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1782 1783 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1784 1785 mDisplayPowerRequest.lowPowerMode = mLowPowerModeEnabled; 1786 1787 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DOZE) { 1788 mDisplayPowerRequest.dozeScreenState = mDozeScreenStateOverrideFromDreamManager; 1789 mDisplayPowerRequest.dozeScreenBrightness = 1790 mDozeScreenBrightnessOverrideFromDreamManager; 1791 } else { 1792 mDisplayPowerRequest.dozeScreenState = Display.STATE_UNKNOWN; 1793 mDisplayPowerRequest.dozeScreenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 1794 } 1795 1796 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1797 mRequestWaitForNegativeProximity); 1798 mRequestWaitForNegativeProximity = false; 1799 1800 if (DEBUG_SPEW) { 1801 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1802 + ", policy=" + mDisplayPowerRequest.policy 1803 + ", mWakefulness=" + mWakefulness 1804 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1805 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1806 + ", mBootCompleted=" + mBootCompleted); 1807 } 1808 } 1809 } 1810 1811 private static boolean isValidBrightness(int value) { 1812 return value >= 0 && value <= 255; 1813 } 1814 1815 private static boolean isValidAutoBrightnessAdjustment(float value) { 1816 // Handles NaN by always returning false. 1817 return value >= -1.0f && value <= 1.0f; 1818 } 1819 1820 private int getDesiredScreenPolicyLocked() { 1821 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1822 return DisplayPowerRequest.POLICY_OFF; 1823 } 1824 1825 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1826 return DisplayPowerRequest.POLICY_DOZE; 1827 } 1828 1829 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1830 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1831 || !mBootCompleted) { 1832 return DisplayPowerRequest.POLICY_BRIGHT; 1833 } 1834 1835 return DisplayPowerRequest.POLICY_DIM; 1836 } 1837 1838 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1839 new DisplayManagerInternal.DisplayPowerCallbacks() { 1840 private int mDisplayState = Display.STATE_UNKNOWN; 1841 1842 @Override 1843 public void onStateChanged() { 1844 synchronized (mLock) { 1845 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1846 updatePowerStateLocked(); 1847 } 1848 } 1849 1850 @Override 1851 public void onProximityPositive() { 1852 synchronized (mLock) { 1853 mProximityPositive = true; 1854 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1855 updatePowerStateLocked(); 1856 } 1857 } 1858 1859 @Override 1860 public void onProximityNegative() { 1861 synchronized (mLock) { 1862 mProximityPositive = false; 1863 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1864 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1865 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1866 updatePowerStateLocked(); 1867 } 1868 } 1869 1870 @Override 1871 public void onDisplayStateChange(int state) { 1872 // This method is only needed to support legacy display blanking behavior 1873 // where the display's power state is coupled to suspend or to the power HAL. 1874 // The order of operations matters here. 1875 synchronized (mLock) { 1876 if (mDisplayState != state) { 1877 mDisplayState = state; 1878 if (state == Display.STATE_OFF) { 1879 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1880 setHalInteractiveModeLocked(false); 1881 } 1882 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1883 setHalAutoSuspendModeLocked(true); 1884 } 1885 } else { 1886 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1887 setHalAutoSuspendModeLocked(false); 1888 } 1889 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1890 setHalInteractiveModeLocked(true); 1891 } 1892 } 1893 } 1894 } 1895 } 1896 1897 @Override 1898 public void acquireSuspendBlocker() { 1899 mDisplaySuspendBlocker.acquire(); 1900 } 1901 1902 @Override 1903 public void releaseSuspendBlocker() { 1904 mDisplaySuspendBlocker.release(); 1905 } 1906 1907 @Override 1908 public String toString() { 1909 synchronized (this) { 1910 return "state=" + Display.stateToString(mDisplayState); 1911 } 1912 } 1913 }; 1914 1915 private boolean shouldUseProximitySensorLocked() { 1916 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1917 } 1918 1919 /** 1920 * Updates the suspend blocker that keeps the CPU alive. 1921 * 1922 * This function must have no other side-effects. 1923 */ 1924 private void updateSuspendBlockerLocked() { 1925 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1926 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1927 final boolean autoSuspend = !needDisplaySuspendBlocker; 1928 1929 // Disable auto-suspend if needed. 1930 if (!autoSuspend) { 1931 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1932 setHalAutoSuspendModeLocked(false); 1933 } 1934 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1935 setHalInteractiveModeLocked(true); 1936 } 1937 } 1938 1939 // First acquire suspend blockers if needed. 1940 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1941 mWakeLockSuspendBlocker.acquire(); 1942 mHoldingWakeLockSuspendBlocker = true; 1943 } 1944 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1945 mDisplaySuspendBlocker.acquire(); 1946 mHoldingDisplaySuspendBlocker = true; 1947 } 1948 1949 // Then release suspend blockers if needed. 1950 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1951 mWakeLockSuspendBlocker.release(); 1952 mHoldingWakeLockSuspendBlocker = false; 1953 } 1954 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1955 mDisplaySuspendBlocker.release(); 1956 mHoldingDisplaySuspendBlocker = false; 1957 } 1958 1959 // Enable auto-suspend if needed. 1960 if (autoSuspend) { 1961 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1962 setHalInteractiveModeLocked(false); 1963 } 1964 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1965 setHalAutoSuspendModeLocked(true); 1966 } 1967 } 1968 } 1969 1970 /** 1971 * Return true if we must keep a suspend blocker active on behalf of the display. 1972 * We do so if the screen is on or is in transition between states. 1973 */ 1974 private boolean needDisplaySuspendBlockerLocked() { 1975 if (!mDisplayReady) { 1976 return true; 1977 } 1978 if (mDisplayPowerRequest.isBrightOrDim()) { 1979 // If we asked for the screen to be on but it is off due to the proximity 1980 // sensor then we may suspend but only if the configuration allows it. 1981 // On some hardware it may not be safe to suspend because the proximity 1982 // sensor may not be correctly configured as a wake-up source. 1983 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1984 || !mSuspendWhenScreenOffDueToProximityConfig) { 1985 return true; 1986 } 1987 } 1988 // Let the system suspend if the screen is off or dozing. 1989 return false; 1990 } 1991 1992 private void setHalAutoSuspendModeLocked(boolean enable) { 1993 if (enable != mHalAutoSuspendModeEnabled) { 1994 if (DEBUG) { 1995 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 1996 } 1997 mHalAutoSuspendModeEnabled = enable; 1998 nativeSetAutoSuspend(enable); 1999 } 2000 } 2001 2002 private void setHalInteractiveModeLocked(boolean enable) { 2003 if (enable != mHalInteractiveModeEnabled) { 2004 if (DEBUG) { 2005 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 2006 } 2007 mHalInteractiveModeEnabled = enable; 2008 nativeSetInteractive(enable); 2009 } 2010 } 2011 2012 private boolean isInteractiveInternal() { 2013 synchronized (mLock) { 2014 return mInteractive; 2015 } 2016 } 2017 2018 private boolean isLowPowerModeInternal() { 2019 synchronized (mLock) { 2020 return mLowPowerModeEnabled; 2021 } 2022 } 2023 2024 private void handleBatteryStateChangedLocked() { 2025 mDirty |= DIRTY_BATTERY_STATE; 2026 updatePowerStateLocked(); 2027 } 2028 2029 private void startWatchingForBootAnimationFinished() { 2030 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 2031 } 2032 2033 private void checkIfBootAnimationFinished() { 2034 if (DEBUG) { 2035 Slog.d(TAG, "Check if boot animation finished..."); 2036 } 2037 2038 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 2039 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 2040 BOOT_ANIMATION_POLL_INTERVAL); 2041 return; 2042 } 2043 2044 synchronized (mLock) { 2045 if (!mBootCompleted) { 2046 Slog.i(TAG, "Boot animation finished."); 2047 handleBootCompletedLocked(); 2048 } 2049 } 2050 } 2051 2052 private void handleBootCompletedLocked() { 2053 final long now = SystemClock.uptimeMillis(); 2054 mBootCompleted = true; 2055 mDirty |= DIRTY_BOOT_COMPLETED; 2056 userActivityNoUpdateLocked( 2057 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 2058 updatePowerStateLocked(); 2059 } 2060 2061 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 2062 final String reason, boolean wait) { 2063 if (mHandler == null || !mSystemReady) { 2064 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 2065 } 2066 2067 Runnable runnable = new Runnable() { 2068 @Override 2069 public void run() { 2070 synchronized (this) { 2071 if (shutdown) { 2072 ShutdownThread.shutdown(mContext, confirm); 2073 } else { 2074 ShutdownThread.reboot(mContext, reason, confirm); 2075 } 2076 } 2077 } 2078 }; 2079 2080 // ShutdownThread must run on a looper capable of displaying the UI. 2081 Message msg = Message.obtain(mHandler, runnable); 2082 msg.setAsynchronous(true); 2083 mHandler.sendMessage(msg); 2084 2085 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 2086 if (wait) { 2087 synchronized (runnable) { 2088 while (true) { 2089 try { 2090 runnable.wait(); 2091 } catch (InterruptedException e) { 2092 } 2093 } 2094 } 2095 } 2096 } 2097 2098 private void crashInternal(final String message) { 2099 Thread t = new Thread("PowerManagerService.crash()") { 2100 @Override 2101 public void run() { 2102 throw new RuntimeException(message); 2103 } 2104 }; 2105 try { 2106 t.start(); 2107 t.join(); 2108 } catch (InterruptedException e) { 2109 Log.wtf(TAG, e); 2110 } 2111 } 2112 2113 private void setStayOnSettingInternal(int val) { 2114 Settings.Global.putInt(mContext.getContentResolver(), 2115 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 2116 } 2117 2118 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 2119 synchronized (mLock) { 2120 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 2121 mDirty |= DIRTY_SETTINGS; 2122 updatePowerStateLocked(); 2123 } 2124 } 2125 2126 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 2127 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 2128 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 2129 } 2130 2131 private void setAttentionLightInternal(boolean on, int color) { 2132 Light light; 2133 synchronized (mLock) { 2134 if (!mSystemReady) { 2135 return; 2136 } 2137 light = mAttentionLight; 2138 } 2139 2140 // Control light outside of lock. 2141 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 2142 } 2143 2144 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 2145 synchronized (mLock) { 2146 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 2147 mScreenBrightnessOverrideFromWindowManager = brightness; 2148 mDirty |= DIRTY_SETTINGS; 2149 updatePowerStateLocked(); 2150 } 2151 } 2152 } 2153 2154 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 2155 synchronized (mLock) { 2156 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 2157 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 2158 mDirty |= DIRTY_SETTINGS; 2159 updatePowerStateLocked(); 2160 } 2161 } 2162 } 2163 2164 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2165 synchronized (mLock) { 2166 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2167 mTemporaryScreenBrightnessSettingOverride = brightness; 2168 mDirty |= DIRTY_SETTINGS; 2169 updatePowerStateLocked(); 2170 } 2171 } 2172 } 2173 2174 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2175 synchronized (mLock) { 2176 // Note: This condition handles NaN because NaN is not equal to any other 2177 // value, including itself. 2178 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2179 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2180 mDirty |= DIRTY_SETTINGS; 2181 updatePowerStateLocked(); 2182 } 2183 } 2184 } 2185 2186 private void setDozeOverrideFromDreamManagerInternal( 2187 int screenState, int screenBrightness) { 2188 synchronized (mLock) { 2189 if (mDozeScreenStateOverrideFromDreamManager != screenState 2190 || mDozeScreenBrightnessOverrideFromDreamManager != screenBrightness) { 2191 mDozeScreenStateOverrideFromDreamManager = screenState; 2192 mDozeScreenBrightnessOverrideFromDreamManager = screenBrightness; 2193 mDirty |= DIRTY_SETTINGS; 2194 updatePowerStateLocked(); 2195 } 2196 } 2197 } 2198 2199 private void powerHintInternal(int hintId, int data) { 2200 nativeSendPowerHint(hintId, data); 2201 } 2202 2203 private static void setSurfaceFlingerLowPowerMode(int enabled) { 2204 try { 2205 final IBinder flinger = ServiceManager.getService("SurfaceFlinger"); 2206 if (flinger != null) { 2207 final Parcel data = Parcel.obtain(); 2208 data.writeInterfaceToken("android.ui.ISurfaceComposer"); 2209 data.writeInt(enabled); 2210 flinger.transact(1016, data, null, 0); 2211 data.recycle(); 2212 } 2213 } catch (RemoteException ex) { 2214 Slog.e(TAG, "Failed to reduce refresh rate", ex); 2215 } 2216 } 2217 2218 /** 2219 * Low-level function turn the device off immediately, without trying 2220 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2221 */ 2222 public static void lowLevelShutdown() { 2223 SystemProperties.set("sys.powerctl", "shutdown"); 2224 } 2225 2226 /** 2227 * Low-level function to reboot the device. On success, this 2228 * function doesn't return. If more than 20 seconds passes from 2229 * the time a reboot is requested (120 seconds for reboot to 2230 * recovery), this method returns. 2231 * 2232 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2233 */ 2234 public static void lowLevelReboot(String reason) { 2235 if (reason == null) { 2236 reason = ""; 2237 } 2238 long duration; 2239 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2240 // If we are rebooting to go into recovery, instead of 2241 // setting sys.powerctl directly we'll start the 2242 // pre-recovery service which will do some preparation for 2243 // recovery and then reboot for us. 2244 // 2245 // This preparation can take more than 20 seconds if 2246 // there's a very large update package, so lengthen the 2247 // timeout. 2248 SystemProperties.set("ctl.start", "pre-recovery"); 2249 duration = 120 * 1000L; 2250 } else { 2251 SystemProperties.set("sys.powerctl", "reboot," + reason); 2252 duration = 20 * 1000L; 2253 } 2254 try { 2255 Thread.sleep(duration); 2256 } catch (InterruptedException e) { 2257 Thread.currentThread().interrupt(); 2258 } 2259 } 2260 2261 @Override // Watchdog.Monitor implementation 2262 public void monitor() { 2263 // Grab and release lock for watchdog monitor to detect deadlocks. 2264 synchronized (mLock) { 2265 } 2266 } 2267 2268 private void dumpInternal(PrintWriter pw) { 2269 pw.println("POWER MANAGER (dumpsys power)\n"); 2270 2271 final WirelessChargerDetector wcd; 2272 synchronized (mLock) { 2273 pw.println("Power Manager State:"); 2274 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2275 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2276 pw.println(" mInteractive=" + mInteractive); 2277 pw.println(" mIsPowered=" + mIsPowered); 2278 pw.println(" mPlugType=" + mPlugType); 2279 pw.println(" mBatteryLevel=" + mBatteryLevel); 2280 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2281 pw.println(" mDockState=" + mDockState); 2282 pw.println(" mStayOn=" + mStayOn); 2283 pw.println(" mProximityPositive=" + mProximityPositive); 2284 pw.println(" mBootCompleted=" + mBootCompleted); 2285 pw.println(" mSystemReady=" + mSystemReady); 2286 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2287 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2288 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2289 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2290 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2291 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2292 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2293 pw.println(" mLowPowerModeEnabled=" + mLowPowerModeEnabled); 2294 pw.println(" mBatteryLevelLow=" + mBatteryLevelLow); 2295 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2296 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2297 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2298 pw.println(" mLastUserActivityTimeNoChangeLights=" 2299 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2300 pw.println(" mDisplayReady=" + mDisplayReady); 2301 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2302 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2303 2304 pw.println(); 2305 pw.println("Settings and Configuration:"); 2306 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2307 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2308 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2309 + mDecoupleHalInteractiveModeFromDisplayConfig); 2310 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2311 + mWakeUpWhenPluggedOrUnpluggedConfig); 2312 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2313 + mSuspendWhenScreenOffDueToProximityConfig); 2314 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2315 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2316 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2317 + mDreamsActivatedOnSleepByDefaultConfig); 2318 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2319 + mDreamsActivatedOnDockByDefaultConfig); 2320 pw.println(" mDreamsEnabledOnBatteryConfig=" 2321 + mDreamsEnabledOnBatteryConfig); 2322 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2323 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2324 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2325 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2326 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2327 + mDreamsBatteryLevelDrainCutoffConfig); 2328 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2329 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2330 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2331 pw.println(" mLowPowerModeSetting=" + mLowPowerModeSetting); 2332 pw.println(" mAutoLowPowerModeEnabled=" + mAutoLowPowerModeEnabled); 2333 pw.println(" mAutoLowPowerModeSnoozing=" + mAutoLowPowerModeSnoozing); 2334 pw.println(" mMinimumScreenOffTimeoutConfig=" + mMinimumScreenOffTimeoutConfig); 2335 pw.println(" mMaximumScreenDimDurationConfig=" + mMaximumScreenDimDurationConfig); 2336 pw.println(" mMaximumScreenDimRatioConfig=" + mMaximumScreenDimRatioConfig); 2337 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2338 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2339 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2340 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2341 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2342 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2343 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2344 + mScreenAutoBrightnessAdjustmentSetting); 2345 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2346 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2347 + mScreenBrightnessOverrideFromWindowManager); 2348 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2349 + mUserActivityTimeoutOverrideFromWindowManager); 2350 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2351 + mTemporaryScreenBrightnessSettingOverride); 2352 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2353 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2354 pw.println(" mDozeScreenStateOverrideFromDreamManager=" 2355 + mDozeScreenStateOverrideFromDreamManager); 2356 pw.println(" mDozeScreenBrightnessOverrideFromDreamManager=" 2357 + mDozeScreenBrightnessOverrideFromDreamManager); 2358 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2359 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2360 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2361 2362 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2363 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2364 pw.println(); 2365 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2366 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2367 2368 pw.println(); 2369 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2370 for (WakeLock wl : mWakeLocks) { 2371 pw.println(" " + wl); 2372 } 2373 2374 pw.println(); 2375 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2376 for (SuspendBlocker sb : mSuspendBlockers) { 2377 pw.println(" " + sb); 2378 } 2379 2380 pw.println(); 2381 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2382 2383 pw.println(); 2384 pw.println("Display Power: " + mDisplayPowerCallbacks); 2385 2386 wcd = mWirelessChargerDetector; 2387 } 2388 2389 if (wcd != null) { 2390 wcd.dump(pw); 2391 } 2392 } 2393 2394 private SuspendBlocker createSuspendBlockerLocked(String name) { 2395 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2396 mSuspendBlockers.add(suspendBlocker); 2397 return suspendBlocker; 2398 } 2399 2400 private static String wakefulnessToString(int wakefulness) { 2401 switch (wakefulness) { 2402 case WAKEFULNESS_ASLEEP: 2403 return "Asleep"; 2404 case WAKEFULNESS_AWAKE: 2405 return "Awake"; 2406 case WAKEFULNESS_DREAMING: 2407 return "Dreaming"; 2408 case WAKEFULNESS_DOZING: 2409 return "Dozing"; 2410 default: 2411 return Integer.toString(wakefulness); 2412 } 2413 } 2414 2415 private static WorkSource copyWorkSource(WorkSource workSource) { 2416 return workSource != null ? new WorkSource(workSource) : null; 2417 } 2418 2419 private final class BatteryReceiver extends BroadcastReceiver { 2420 @Override 2421 public void onReceive(Context context, Intent intent) { 2422 synchronized (mLock) { 2423 handleBatteryStateChangedLocked(); 2424 } 2425 } 2426 } 2427 2428 private final class DreamReceiver extends BroadcastReceiver { 2429 @Override 2430 public void onReceive(Context context, Intent intent) { 2431 synchronized (mLock) { 2432 scheduleSandmanLocked(); 2433 } 2434 } 2435 } 2436 2437 private final class UserSwitchedReceiver extends BroadcastReceiver { 2438 @Override 2439 public void onReceive(Context context, Intent intent) { 2440 synchronized (mLock) { 2441 handleSettingsChangedLocked(); 2442 } 2443 } 2444 } 2445 2446 private final class DockReceiver extends BroadcastReceiver { 2447 @Override 2448 public void onReceive(Context context, Intent intent) { 2449 synchronized (mLock) { 2450 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2451 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2452 if (mDockState != dockState) { 2453 mDockState = dockState; 2454 mDirty |= DIRTY_DOCK_STATE; 2455 updatePowerStateLocked(); 2456 } 2457 } 2458 } 2459 } 2460 2461 private final class SettingsObserver extends ContentObserver { 2462 public SettingsObserver(Handler handler) { 2463 super(handler); 2464 } 2465 2466 @Override 2467 public void onChange(boolean selfChange, Uri uri) { 2468 synchronized (mLock) { 2469 handleSettingsChangedLocked(); 2470 } 2471 } 2472 } 2473 2474 /** 2475 * Handler for asynchronous operations performed by the power manager. 2476 */ 2477 private final class PowerManagerHandler extends Handler { 2478 public PowerManagerHandler(Looper looper) { 2479 super(looper, null, true /*async*/); 2480 } 2481 2482 @Override 2483 public void handleMessage(Message msg) { 2484 switch (msg.what) { 2485 case MSG_USER_ACTIVITY_TIMEOUT: 2486 handleUserActivityTimeout(); 2487 break; 2488 case MSG_SANDMAN: 2489 handleSandman(); 2490 break; 2491 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2492 handleScreenOnBlockerReleased(); 2493 break; 2494 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2495 checkIfBootAnimationFinished(); 2496 break; 2497 } 2498 } 2499 } 2500 2501 /** 2502 * Represents a wake lock that has been acquired by an application. 2503 */ 2504 private final class WakeLock implements IBinder.DeathRecipient { 2505 public final IBinder mLock; 2506 public int mFlags; 2507 public String mTag; 2508 public final String mPackageName; 2509 public WorkSource mWorkSource; 2510 public String mHistoryTag; 2511 public final int mOwnerUid; 2512 public final int mOwnerPid; 2513 public boolean mNotifiedAcquired; 2514 2515 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2516 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2517 mLock = lock; 2518 mFlags = flags; 2519 mTag = tag; 2520 mPackageName = packageName; 2521 mWorkSource = copyWorkSource(workSource); 2522 mHistoryTag = historyTag; 2523 mOwnerUid = ownerUid; 2524 mOwnerPid = ownerPid; 2525 } 2526 2527 @Override 2528 public void binderDied() { 2529 PowerManagerService.this.handleWakeLockDeath(this); 2530 } 2531 2532 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2533 int ownerUid, int ownerPid) { 2534 return mFlags == flags 2535 && mTag.equals(tag) 2536 && hasSameWorkSource(workSource) 2537 && mOwnerUid == ownerUid 2538 && mOwnerPid == ownerPid; 2539 } 2540 2541 public void updateProperties(int flags, String tag, String packageName, 2542 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2543 if (!mPackageName.equals(packageName)) { 2544 throw new IllegalStateException("Existing wake lock package name changed: " 2545 + mPackageName + " to " + packageName); 2546 } 2547 if (mOwnerUid != ownerUid) { 2548 throw new IllegalStateException("Existing wake lock uid changed: " 2549 + mOwnerUid + " to " + ownerUid); 2550 } 2551 if (mOwnerPid != ownerPid) { 2552 throw new IllegalStateException("Existing wake lock pid changed: " 2553 + mOwnerPid + " to " + ownerPid); 2554 } 2555 mFlags = flags; 2556 mTag = tag; 2557 updateWorkSource(workSource); 2558 mHistoryTag = historyTag; 2559 } 2560 2561 public boolean hasSameWorkSource(WorkSource workSource) { 2562 return Objects.equal(mWorkSource, workSource); 2563 } 2564 2565 public void updateWorkSource(WorkSource workSource) { 2566 mWorkSource = copyWorkSource(workSource); 2567 } 2568 2569 @Override 2570 public String toString() { 2571 return getLockLevelString() 2572 + " '" + mTag + "'" + getLockFlagsString() 2573 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2574 } 2575 2576 @SuppressWarnings("deprecation") 2577 private String getLockLevelString() { 2578 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2579 case PowerManager.FULL_WAKE_LOCK: 2580 return "FULL_WAKE_LOCK "; 2581 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2582 return "SCREEN_BRIGHT_WAKE_LOCK "; 2583 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2584 return "SCREEN_DIM_WAKE_LOCK "; 2585 case PowerManager.PARTIAL_WAKE_LOCK: 2586 return "PARTIAL_WAKE_LOCK "; 2587 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2588 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2589 case PowerManager.DOZE_WAKE_LOCK: 2590 return "DOZE_WAKE_LOCK "; 2591 default: 2592 return "??? "; 2593 } 2594 } 2595 2596 private String getLockFlagsString() { 2597 String result = ""; 2598 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2599 result += " ACQUIRE_CAUSES_WAKEUP"; 2600 } 2601 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2602 result += " ON_AFTER_RELEASE"; 2603 } 2604 return result; 2605 } 2606 } 2607 2608 private final class SuspendBlockerImpl implements SuspendBlocker { 2609 private final String mName; 2610 private int mReferenceCount; 2611 2612 public SuspendBlockerImpl(String name) { 2613 mName = name; 2614 } 2615 2616 @Override 2617 protected void finalize() throws Throwable { 2618 try { 2619 if (mReferenceCount != 0) { 2620 Log.wtf(TAG, "Suspend blocker \"" + mName 2621 + "\" was finalized without being released!"); 2622 mReferenceCount = 0; 2623 nativeReleaseSuspendBlocker(mName); 2624 } 2625 } finally { 2626 super.finalize(); 2627 } 2628 } 2629 2630 @Override 2631 public void acquire() { 2632 synchronized (this) { 2633 mReferenceCount += 1; 2634 if (mReferenceCount == 1) { 2635 if (DEBUG_SPEW) { 2636 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2637 } 2638 nativeAcquireSuspendBlocker(mName); 2639 } 2640 } 2641 } 2642 2643 @Override 2644 public void release() { 2645 synchronized (this) { 2646 mReferenceCount -= 1; 2647 if (mReferenceCount == 0) { 2648 if (DEBUG_SPEW) { 2649 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2650 } 2651 nativeReleaseSuspendBlocker(mName); 2652 } else if (mReferenceCount < 0) { 2653 Log.wtf(TAG, "Suspend blocker \"" + mName 2654 + "\" was released without being acquired!", new Throwable()); 2655 mReferenceCount = 0; 2656 } 2657 } 2658 } 2659 2660 @Override 2661 public String toString() { 2662 synchronized (this) { 2663 return mName + ": ref count=" + mReferenceCount; 2664 } 2665 } 2666 } 2667 2668 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2669 private int mNestCount; 2670 2671 public boolean isHeld() { 2672 synchronized (this) { 2673 return mNestCount != 0; 2674 } 2675 } 2676 2677 @Override 2678 public void acquire() { 2679 synchronized (this) { 2680 mNestCount += 1; 2681 if (DEBUG) { 2682 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2683 } 2684 } 2685 } 2686 2687 @Override 2688 public void release() { 2689 synchronized (this) { 2690 mNestCount -= 1; 2691 if (mNestCount < 0) { 2692 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2693 new Throwable()); 2694 mNestCount = 0; 2695 } 2696 if (mNestCount == 0) { 2697 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2698 } 2699 if (DEBUG) { 2700 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2701 } 2702 } 2703 } 2704 2705 @Override 2706 public String toString() { 2707 synchronized (this) { 2708 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2709 } 2710 } 2711 } 2712 2713 private final class BinderService extends IPowerManager.Stub { 2714 @Override // Binder call 2715 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2716 String packageName, int uid) { 2717 if (uid < 0) { 2718 uid = Binder.getCallingUid(); 2719 } 2720 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2721 } 2722 2723 @Override // Binder call 2724 public void powerHint(int hintId, int data) { 2725 if (!mSystemReady) { 2726 // Service not ready yet, so who the heck cares about power hints, bah. 2727 return; 2728 } 2729 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2730 powerHintInternal(hintId, data); 2731 } 2732 2733 @Override // Binder call 2734 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2735 WorkSource ws, String historyTag) { 2736 if (lock == null) { 2737 throw new IllegalArgumentException("lock must not be null"); 2738 } 2739 if (packageName == null) { 2740 throw new IllegalArgumentException("packageName must not be null"); 2741 } 2742 PowerManager.validateWakeLockParameters(flags, tag); 2743 2744 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2745 if (ws != null && ws.size() != 0) { 2746 mContext.enforceCallingOrSelfPermission( 2747 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2748 } else { 2749 ws = null; 2750 } 2751 2752 final int uid = Binder.getCallingUid(); 2753 final int pid = Binder.getCallingPid(); 2754 final long ident = Binder.clearCallingIdentity(); 2755 try { 2756 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2757 } finally { 2758 Binder.restoreCallingIdentity(ident); 2759 } 2760 } 2761 2762 @Override // Binder call 2763 public void releaseWakeLock(IBinder lock, int flags) { 2764 if (lock == null) { 2765 throw new IllegalArgumentException("lock must not be null"); 2766 } 2767 2768 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2769 2770 final long ident = Binder.clearCallingIdentity(); 2771 try { 2772 releaseWakeLockInternal(lock, flags); 2773 } finally { 2774 Binder.restoreCallingIdentity(ident); 2775 } 2776 } 2777 2778 @Override // Binder call 2779 public void updateWakeLockUids(IBinder lock, int[] uids) { 2780 WorkSource ws = null; 2781 2782 if (uids != null) { 2783 ws = new WorkSource(); 2784 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2785 // one at a time? 2786 for (int i = 0; i < uids.length; i++) { 2787 ws.add(uids[i]); 2788 } 2789 } 2790 updateWakeLockWorkSource(lock, ws, null); 2791 } 2792 2793 @Override // Binder call 2794 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2795 if (lock == null) { 2796 throw new IllegalArgumentException("lock must not be null"); 2797 } 2798 2799 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2800 if (ws != null && ws.size() != 0) { 2801 mContext.enforceCallingOrSelfPermission( 2802 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2803 } else { 2804 ws = null; 2805 } 2806 2807 final int callingUid = Binder.getCallingUid(); 2808 final long ident = Binder.clearCallingIdentity(); 2809 try { 2810 updateWakeLockWorkSourceInternal(lock, ws, historyTag, callingUid); 2811 } finally { 2812 Binder.restoreCallingIdentity(ident); 2813 } 2814 } 2815 2816 @Override // Binder call 2817 public boolean isWakeLockLevelSupported(int level) { 2818 final long ident = Binder.clearCallingIdentity(); 2819 try { 2820 return isWakeLockLevelSupportedInternal(level); 2821 } finally { 2822 Binder.restoreCallingIdentity(ident); 2823 } 2824 } 2825 2826 @Override // Binder call 2827 public void userActivity(long eventTime, int event, int flags) { 2828 final long now = SystemClock.uptimeMillis(); 2829 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2830 != PackageManager.PERMISSION_GRANTED) { 2831 // Once upon a time applications could call userActivity(). 2832 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2833 // request instead of throwing a SecurityException so we don't break old apps. 2834 synchronized (mLock) { 2835 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2836 mLastWarningAboutUserActivityPermission = now; 2837 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2838 + "caller does not have DEVICE_POWER permission. " 2839 + "Please fix your app! " 2840 + " pid=" + Binder.getCallingPid() 2841 + " uid=" + Binder.getCallingUid()); 2842 } 2843 } 2844 return; 2845 } 2846 2847 if (eventTime > SystemClock.uptimeMillis()) { 2848 throw new IllegalArgumentException("event time must not be in the future"); 2849 } 2850 2851 final int uid = Binder.getCallingUid(); 2852 final long ident = Binder.clearCallingIdentity(); 2853 try { 2854 userActivityInternal(eventTime, event, flags, uid); 2855 } finally { 2856 Binder.restoreCallingIdentity(ident); 2857 } 2858 } 2859 2860 @Override // Binder call 2861 public void wakeUp(long eventTime) { 2862 if (eventTime > SystemClock.uptimeMillis()) { 2863 throw new IllegalArgumentException("event time must not be in the future"); 2864 } 2865 2866 mContext.enforceCallingOrSelfPermission( 2867 android.Manifest.permission.DEVICE_POWER, null); 2868 2869 final int uid = Binder.getCallingUid(); 2870 final long ident = Binder.clearCallingIdentity(); 2871 try { 2872 wakeUpInternal(eventTime, uid); 2873 } finally { 2874 Binder.restoreCallingIdentity(ident); 2875 } 2876 } 2877 2878 @Override // Binder call 2879 public void goToSleep(long eventTime, int reason, int flags) { 2880 if (eventTime > SystemClock.uptimeMillis()) { 2881 throw new IllegalArgumentException("event time must not be in the future"); 2882 } 2883 2884 mContext.enforceCallingOrSelfPermission( 2885 android.Manifest.permission.DEVICE_POWER, null); 2886 2887 final int uid = Binder.getCallingUid(); 2888 final long ident = Binder.clearCallingIdentity(); 2889 try { 2890 goToSleepInternal(eventTime, reason, flags, uid); 2891 } finally { 2892 Binder.restoreCallingIdentity(ident); 2893 } 2894 } 2895 2896 @Override // Binder call 2897 public void nap(long eventTime) { 2898 if (eventTime > SystemClock.uptimeMillis()) { 2899 throw new IllegalArgumentException("event time must not be in the future"); 2900 } 2901 2902 mContext.enforceCallingOrSelfPermission( 2903 android.Manifest.permission.DEVICE_POWER, null); 2904 2905 final int uid = Binder.getCallingUid(); 2906 final long ident = Binder.clearCallingIdentity(); 2907 try { 2908 napInternal(eventTime, uid); 2909 } finally { 2910 Binder.restoreCallingIdentity(ident); 2911 } 2912 } 2913 2914 @Override // Binder call 2915 public boolean isInteractive() { 2916 final long ident = Binder.clearCallingIdentity(); 2917 try { 2918 return isInteractiveInternal(); 2919 } finally { 2920 Binder.restoreCallingIdentity(ident); 2921 } 2922 } 2923 2924 @Override // Binder call 2925 public boolean isPowerSaveMode() { 2926 final long ident = Binder.clearCallingIdentity(); 2927 try { 2928 return isLowPowerModeInternal(); 2929 } finally { 2930 Binder.restoreCallingIdentity(ident); 2931 } 2932 } 2933 2934 /** 2935 * Reboots the device. 2936 * 2937 * @param confirm If true, shows a reboot confirmation dialog. 2938 * @param reason The reason for the reboot, or null if none. 2939 * @param wait If true, this call waits for the reboot to complete and does not return. 2940 */ 2941 @Override // Binder call 2942 public void reboot(boolean confirm, String reason, boolean wait) { 2943 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2944 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2945 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2946 } 2947 2948 final long ident = Binder.clearCallingIdentity(); 2949 try { 2950 shutdownOrRebootInternal(false, confirm, reason, wait); 2951 } finally { 2952 Binder.restoreCallingIdentity(ident); 2953 } 2954 } 2955 2956 /** 2957 * Shuts down the device. 2958 * 2959 * @param confirm If true, shows a shutdown confirmation dialog. 2960 * @param wait If true, this call waits for the shutdown to complete and does not return. 2961 */ 2962 @Override // Binder call 2963 public void shutdown(boolean confirm, boolean wait) { 2964 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2965 2966 final long ident = Binder.clearCallingIdentity(); 2967 try { 2968 shutdownOrRebootInternal(true, confirm, null, wait); 2969 } finally { 2970 Binder.restoreCallingIdentity(ident); 2971 } 2972 } 2973 2974 /** 2975 * Crash the runtime (causing a complete restart of the Android framework). 2976 * Requires REBOOT permission. Mostly for testing. Should not return. 2977 */ 2978 @Override // Binder call 2979 public void crash(String message) { 2980 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2981 2982 final long ident = Binder.clearCallingIdentity(); 2983 try { 2984 crashInternal(message); 2985 } finally { 2986 Binder.restoreCallingIdentity(ident); 2987 } 2988 } 2989 2990 /** 2991 * Set the setting that determines whether the device stays on when plugged in. 2992 * The argument is a bit string, with each bit specifying a power source that, 2993 * when the device is connected to that source, causes the device to stay on. 2994 * See {@link android.os.BatteryManager} for the list of power sources that 2995 * can be specified. Current values include 2996 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2997 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2998 * 2999 * Used by "adb shell svc power stayon ..." 3000 * 3001 * @param val an {@code int} containing the bits that specify which power sources 3002 * should cause the device to stay on. 3003 */ 3004 @Override // Binder call 3005 public void setStayOnSetting(int val) { 3006 mContext.enforceCallingOrSelfPermission( 3007 android.Manifest.permission.WRITE_SETTINGS, null); 3008 3009 final long ident = Binder.clearCallingIdentity(); 3010 try { 3011 setStayOnSettingInternal(val); 3012 } finally { 3013 Binder.restoreCallingIdentity(ident); 3014 } 3015 } 3016 3017 /** 3018 * Used by device administration to set the maximum screen off timeout. 3019 * 3020 * This method must only be called by the device administration policy manager. 3021 */ 3022 @Override // Binder call 3023 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 3024 final long ident = Binder.clearCallingIdentity(); 3025 try { 3026 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 3027 } finally { 3028 Binder.restoreCallingIdentity(ident); 3029 } 3030 } 3031 3032 /** 3033 * Used by the settings application and brightness control widgets to 3034 * temporarily override the current screen brightness setting so that the 3035 * user can observe the effect of an intended settings change without applying 3036 * it immediately. 3037 * 3038 * The override will be canceled when the setting value is next updated. 3039 * 3040 * @param brightness The overridden brightness. 3041 * 3042 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 3043 */ 3044 @Override // Binder call 3045 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 3046 mContext.enforceCallingOrSelfPermission( 3047 android.Manifest.permission.DEVICE_POWER, null); 3048 3049 final long ident = Binder.clearCallingIdentity(); 3050 try { 3051 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 3052 } finally { 3053 Binder.restoreCallingIdentity(ident); 3054 } 3055 } 3056 3057 /** 3058 * Used by the settings application and brightness control widgets to 3059 * temporarily override the current screen auto-brightness adjustment setting so that the 3060 * user can observe the effect of an intended settings change without applying 3061 * it immediately. 3062 * 3063 * The override will be canceled when the setting value is next updated. 3064 * 3065 * @param adj The overridden brightness, or Float.NaN to disable the override. 3066 * 3067 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 3068 */ 3069 @Override // Binder call 3070 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 3071 mContext.enforceCallingOrSelfPermission( 3072 android.Manifest.permission.DEVICE_POWER, null); 3073 3074 final long ident = Binder.clearCallingIdentity(); 3075 try { 3076 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 3077 } finally { 3078 Binder.restoreCallingIdentity(ident); 3079 } 3080 } 3081 3082 /** 3083 * Used by the phone application to make the attention LED flash when ringing. 3084 */ 3085 @Override // Binder call 3086 public void setAttentionLight(boolean on, int color) { 3087 mContext.enforceCallingOrSelfPermission( 3088 android.Manifest.permission.DEVICE_POWER, null); 3089 3090 final long ident = Binder.clearCallingIdentity(); 3091 try { 3092 setAttentionLightInternal(on, color); 3093 } finally { 3094 Binder.restoreCallingIdentity(ident); 3095 } 3096 } 3097 3098 @Override // Binder call 3099 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3100 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 3101 != PackageManager.PERMISSION_GRANTED) { 3102 pw.println("Permission Denial: can't dump PowerManager from from pid=" 3103 + Binder.getCallingPid() 3104 + ", uid=" + Binder.getCallingUid()); 3105 return; 3106 } 3107 3108 final long ident = Binder.clearCallingIdentity(); 3109 try { 3110 dumpInternal(pw); 3111 } finally { 3112 Binder.restoreCallingIdentity(ident); 3113 } 3114 } 3115 } 3116 3117 private final class LocalService extends PowerManagerInternal { 3118 @Override 3119 public void setScreenBrightnessOverrideFromWindowManager(int screenBrightness) { 3120 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3121 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3122 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3123 } 3124 setScreenBrightnessOverrideFromWindowManagerInternal(screenBrightness); 3125 } 3126 3127 @Override 3128 public void setButtonBrightnessOverrideFromWindowManager(int screenBrightness) { 3129 // Do nothing. 3130 // Button lights are not currently supported in the new implementation. 3131 } 3132 3133 @Override 3134 public void setDozeOverrideFromDreamManager(int screenState, int screenBrightness) { 3135 switch (screenState) { 3136 case Display.STATE_UNKNOWN: 3137 case Display.STATE_OFF: 3138 case Display.STATE_DOZE: 3139 case Display.STATE_DOZE_SUSPEND: 3140 case Display.STATE_ON: 3141 break; 3142 default: 3143 screenState = Display.STATE_UNKNOWN; 3144 break; 3145 } 3146 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3147 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3148 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3149 } 3150 setDozeOverrideFromDreamManagerInternal(screenState, screenBrightness); 3151 } 3152 3153 @Override 3154 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 3155 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 3156 } 3157 3158 @Override 3159 public boolean getLowPowerModeEnabled() { 3160 synchronized (mLock) { 3161 return mLowPowerModeEnabled; 3162 } 3163 } 3164 3165 @Override 3166 public void registerLowPowerModeObserver(LowPowerModeListener listener) { 3167 synchronized (mLock) { 3168 mLowPowerModeListeners.add(listener); 3169 } 3170 } 3171 } 3172} 3173