PowerManagerService.java revision 6d2a9492e2b19421165f0cd918d9f28595bfb770
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); 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) { 800 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 801 && isScreenLock(wakeLock)) { 802 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 803 } 804 } 805 806 private void releaseWakeLockInternal(IBinder lock, int flags) { 807 synchronized (mLock) { 808 int index = findWakeLockIndexLocked(lock); 809 if (index < 0) { 810 if (DEBUG_SPEW) { 811 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 812 + " [not found], flags=0x" + Integer.toHexString(flags)); 813 } 814 return; 815 } 816 817 WakeLock wakeLock = mWakeLocks.get(index); 818 if (DEBUG_SPEW) { 819 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 820 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 821 } 822 823 mWakeLocks.remove(index); 824 notifyWakeLockReleasedLocked(wakeLock); 825 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 826 827 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 828 mRequestWaitForNegativeProximity = true; 829 } 830 831 applyWakeLockFlagsOnReleaseLocked(wakeLock); 832 mDirty |= DIRTY_WAKE_LOCKS; 833 updatePowerStateLocked(); 834 } 835 } 836 837 private void handleWakeLockDeath(WakeLock wakeLock) { 838 synchronized (mLock) { 839 if (DEBUG_SPEW) { 840 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 841 + " [" + wakeLock.mTag + "]"); 842 } 843 844 int index = mWakeLocks.indexOf(wakeLock); 845 if (index < 0) { 846 return; 847 } 848 849 mWakeLocks.remove(index); 850 notifyWakeLockReleasedLocked(wakeLock); 851 852 applyWakeLockFlagsOnReleaseLocked(wakeLock); 853 mDirty |= DIRTY_WAKE_LOCKS; 854 updatePowerStateLocked(); 855 } 856 } 857 858 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 859 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 860 && isScreenLock(wakeLock)) { 861 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 862 PowerManager.USER_ACTIVITY_EVENT_OTHER, 863 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 864 wakeLock.mOwnerUid); 865 } 866 } 867 868 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag) { 869 synchronized (mLock) { 870 int index = findWakeLockIndexLocked(lock); 871 if (index < 0) { 872 if (DEBUG_SPEW) { 873 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 874 + " [not found], ws=" + ws); 875 } 876 throw new IllegalArgumentException("Wake lock not active"); 877 } 878 879 WakeLock wakeLock = mWakeLocks.get(index); 880 if (DEBUG_SPEW) { 881 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 882 + " [" + wakeLock.mTag + "], ws=" + ws); 883 } 884 885 if (!wakeLock.hasSameWorkSource(ws)) { 886 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 887 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 888 ws, historyTag); 889 wakeLock.mHistoryTag = historyTag; 890 wakeLock.updateWorkSource(ws); 891 } 892 } 893 } 894 895 private int findWakeLockIndexLocked(IBinder lock) { 896 final int count = mWakeLocks.size(); 897 for (int i = 0; i < count; i++) { 898 if (mWakeLocks.get(i).mLock == lock) { 899 return i; 900 } 901 } 902 return -1; 903 } 904 905 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 906 if (mSystemReady) { 907 wakeLock.mNotifiedAcquired = true; 908 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 909 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 910 wakeLock.mHistoryTag); 911 } 912 } 913 914 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 915 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 916 if (mSystemReady && wakeLock.mNotifiedAcquired) { 917 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 918 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 919 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 920 } 921 } 922 923 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 924 if (mSystemReady && wakeLock.mNotifiedAcquired) { 925 wakeLock.mNotifiedAcquired = false; 926 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, 927 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 928 wakeLock.mWorkSource, wakeLock.mHistoryTag); 929 } 930 } 931 932 @SuppressWarnings("deprecation") 933 private boolean isWakeLockLevelSupportedInternal(int level) { 934 synchronized (mLock) { 935 switch (level) { 936 case PowerManager.PARTIAL_WAKE_LOCK: 937 case PowerManager.SCREEN_DIM_WAKE_LOCK: 938 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 939 case PowerManager.FULL_WAKE_LOCK: 940 case PowerManager.DOZE_WAKE_LOCK: 941 return true; 942 943 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 944 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 945 946 default: 947 return false; 948 } 949 } 950 } 951 952 // Called from native code. 953 private void userActivityFromNative(long eventTime, int event, int flags) { 954 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 955 } 956 957 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 958 synchronized (mLock) { 959 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 960 updatePowerStateLocked(); 961 } 962 } 963 } 964 965 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 966 if (DEBUG_SPEW) { 967 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 968 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 969 + ", uid=" + uid); 970 } 971 972 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 973 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 974 || !mBootCompleted || !mSystemReady) { 975 return false; 976 } 977 978 mNotifier.onUserActivity(event, uid); 979 980 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 981 if (eventTime > mLastUserActivityTimeNoChangeLights 982 && eventTime > mLastUserActivityTime) { 983 mLastUserActivityTimeNoChangeLights = eventTime; 984 mDirty |= DIRTY_USER_ACTIVITY; 985 return true; 986 } 987 } else { 988 if (eventTime > mLastUserActivityTime) { 989 mLastUserActivityTime = eventTime; 990 mDirty |= DIRTY_USER_ACTIVITY; 991 return true; 992 } 993 } 994 return false; 995 } 996 997 private void wakeUpInternal(long eventTime) { 998 synchronized (mLock) { 999 if (wakeUpNoUpdateLocked(eventTime)) { 1000 updatePowerStateLocked(); 1001 } 1002 } 1003 } 1004 1005 private boolean wakeUpNoUpdateLocked(long eventTime) { 1006 if (DEBUG_SPEW) { 1007 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 1008 } 1009 1010 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 1011 || !mBootCompleted || !mSystemReady) { 1012 return false; 1013 } 1014 1015 switch (mWakefulness) { 1016 case WAKEFULNESS_ASLEEP: 1017 Slog.i(TAG, "Waking up from sleep..."); 1018 break; 1019 case WAKEFULNESS_DREAMING: 1020 Slog.i(TAG, "Waking up from dream..."); 1021 break; 1022 case WAKEFULNESS_DOZING: 1023 Slog.i(TAG, "Waking up from dozing..."); 1024 break; 1025 } 1026 1027 mLastWakeTime = eventTime; 1028 mDirty |= DIRTY_WAKEFULNESS; 1029 mWakefulness = WAKEFULNESS_AWAKE; 1030 setInteractiveStateLocked(true, 0); 1031 1032 userActivityNoUpdateLocked( 1033 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1034 return true; 1035 } 1036 1037 private void goToSleepInternal(long eventTime, int reason, int flags) { 1038 synchronized (mLock) { 1039 if (goToSleepNoUpdateLocked(eventTime, reason, flags)) { 1040 updatePowerStateLocked(); 1041 } 1042 } 1043 } 1044 1045 // This method is called goToSleep for historical reasons but we actually start 1046 // dozing before really going to sleep. 1047 @SuppressWarnings("deprecation") 1048 private boolean goToSleepNoUpdateLocked(long eventTime, int reason, int flags) { 1049 if (DEBUG_SPEW) { 1050 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime 1051 + ", reason=" + reason + ", flags=" + flags); 1052 } 1053 1054 if (eventTime < mLastWakeTime 1055 || mWakefulness == WAKEFULNESS_ASLEEP 1056 || mWakefulness == WAKEFULNESS_DOZING 1057 || !mBootCompleted || !mSystemReady) { 1058 return false; 1059 } 1060 1061 switch (reason) { 1062 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 1063 Slog.i(TAG, "Going to sleep due to device administration policy..."); 1064 break; 1065 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 1066 Slog.i(TAG, "Going to sleep due to screen timeout..."); 1067 break; 1068 default: 1069 Slog.i(TAG, "Going to sleep by user request..."); 1070 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 1071 break; 1072 } 1073 1074 mLastSleepTime = eventTime; 1075 mDirty |= DIRTY_WAKEFULNESS; 1076 mWakefulness = WAKEFULNESS_DOZING; 1077 mSandmanSummoned = true; 1078 setInteractiveStateLocked(false, reason); 1079 1080 // Report the number of wake locks that will be cleared by going to sleep. 1081 int numWakeLocksCleared = 0; 1082 final int numWakeLocks = mWakeLocks.size(); 1083 for (int i = 0; i < numWakeLocks; i++) { 1084 final WakeLock wakeLock = mWakeLocks.get(i); 1085 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1086 case PowerManager.FULL_WAKE_LOCK: 1087 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1088 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1089 numWakeLocksCleared += 1; 1090 break; 1091 } 1092 } 1093 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 1094 1095 // Skip dozing if requested. 1096 if ((flags & PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE) != 0) { 1097 reallyGoToSleepNoUpdateLocked(eventTime); 1098 } 1099 return true; 1100 } 1101 1102 private void napInternal(long eventTime) { 1103 synchronized (mLock) { 1104 if (napNoUpdateLocked(eventTime)) { 1105 updatePowerStateLocked(); 1106 } 1107 } 1108 } 1109 1110 private boolean napNoUpdateLocked(long eventTime) { 1111 if (DEBUG_SPEW) { 1112 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 1113 } 1114 1115 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1116 || !mBootCompleted || !mSystemReady) { 1117 return false; 1118 } 1119 1120 Slog.i(TAG, "Nap time..."); 1121 1122 mDirty |= DIRTY_WAKEFULNESS; 1123 mWakefulness = WAKEFULNESS_DREAMING; 1124 mSandmanSummoned = true; 1125 setInteractiveStateLocked(true, 0); 1126 return true; 1127 } 1128 1129 // Done dozing, drop everything and go to sleep. 1130 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 1131 if (DEBUG_SPEW) { 1132 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 1133 } 1134 1135 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1136 || !mBootCompleted || !mSystemReady) { 1137 return false; 1138 } 1139 1140 Slog.i(TAG, "Sleeping..."); 1141 1142 mDirty |= DIRTY_WAKEFULNESS; 1143 mWakefulness = WAKEFULNESS_ASLEEP; 1144 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1145 return true; 1146 } 1147 1148 private void setInteractiveStateLocked(boolean interactive, int reason) { 1149 if (mInteractive != interactive) { 1150 finishInteractiveStateChangeLocked(); 1151 1152 mInteractive = interactive; 1153 mInteractiveChanging = true; 1154 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1155 } 1156 } 1157 1158 private void finishInteractiveStateChangeLocked() { 1159 if (mInteractiveChanging) { 1160 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1161 mInteractiveChanging = false; 1162 } 1163 } 1164 1165 /** 1166 * Updates the global power state based on dirty bits recorded in mDirty. 1167 * 1168 * This is the main function that performs power state transitions. 1169 * We centralize them here so that we can recompute the power state completely 1170 * each time something important changes, and ensure that we do it the same 1171 * way each time. The point is to gather all of the transition logic here. 1172 */ 1173 private void updatePowerStateLocked() { 1174 if (!mSystemReady || mDirty == 0) { 1175 return; 1176 } 1177 if (!Thread.holdsLock(mLock)) { 1178 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1179 } 1180 1181 // Phase 0: Basic state updates. 1182 updateIsPoweredLocked(mDirty); 1183 updateStayOnLocked(mDirty); 1184 1185 // Phase 1: Update wakefulness. 1186 // Loop because the wake lock and user activity computations are influenced 1187 // by changes in wakefulness. 1188 final long now = SystemClock.uptimeMillis(); 1189 int dirtyPhase2 = 0; 1190 for (;;) { 1191 int dirtyPhase1 = mDirty; 1192 dirtyPhase2 |= dirtyPhase1; 1193 mDirty = 0; 1194 1195 updateWakeLockSummaryLocked(dirtyPhase1); 1196 updateUserActivitySummaryLocked(now, dirtyPhase1); 1197 if (!updateWakefulnessLocked(dirtyPhase1)) { 1198 break; 1199 } 1200 } 1201 1202 // Phase 2: Update dreams and display power state. 1203 updateDreamLocked(dirtyPhase2); 1204 updateDisplayPowerStateLocked(dirtyPhase2); 1205 1206 // Phase 3: Send notifications, if needed. 1207 if (mDisplayReady) { 1208 finishInteractiveStateChangeLocked(); 1209 } 1210 1211 // Phase 4: Update suspend blocker. 1212 // Because we might release the last suspend blocker here, we need to make sure 1213 // we finished everything else first! 1214 updateSuspendBlockerLocked(); 1215 } 1216 1217 /** 1218 * Updates the value of mIsPowered. 1219 * Sets DIRTY_IS_POWERED if a change occurred. 1220 */ 1221 private void updateIsPoweredLocked(int dirty) { 1222 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1223 final boolean wasPowered = mIsPowered; 1224 final int oldPlugType = mPlugType; 1225 final boolean oldLevelLow = mBatteryLevelLow; 1226 mIsPowered = mBatteryManagerInternal.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1227 mPlugType = mBatteryManagerInternal.getPlugType(); 1228 mBatteryLevel = mBatteryManagerInternal.getBatteryLevel(); 1229 mBatteryLevelLow = mBatteryManagerInternal.getBatteryLevelLow(); 1230 1231 if (DEBUG_SPEW) { 1232 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1233 + ", mIsPowered=" + mIsPowered 1234 + ", oldPlugType=" + oldPlugType 1235 + ", mPlugType=" + mPlugType 1236 + ", mBatteryLevel=" + mBatteryLevel); 1237 } 1238 1239 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1240 mDirty |= DIRTY_IS_POWERED; 1241 1242 // Update wireless dock detection state. 1243 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1244 mIsPowered, mPlugType, mBatteryLevel); 1245 1246 // Treat plugging and unplugging the devices as a user activity. 1247 // Users find it disconcerting when they plug or unplug the device 1248 // and it shuts off right away. 1249 // Some devices also wake the device when plugged or unplugged because 1250 // they don't have a charging LED. 1251 final long now = SystemClock.uptimeMillis(); 1252 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1253 dockedOnWirelessCharger)) { 1254 wakeUpNoUpdateLocked(now); 1255 } 1256 userActivityNoUpdateLocked( 1257 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1258 1259 // Tell the notifier whether wireless charging has started so that 1260 // it can provide feedback to the user. 1261 if (dockedOnWirelessCharger) { 1262 mNotifier.onWirelessChargingStarted(); 1263 } 1264 } 1265 1266 if (wasPowered != mIsPowered || oldLevelLow != mBatteryLevelLow) { 1267 if (oldLevelLow != mBatteryLevelLow && !mBatteryLevelLow) { 1268 if (DEBUG_SPEW) { 1269 Slog.d(TAG, "updateIsPoweredLocked: resetting low power snooze"); 1270 } 1271 mAutoLowPowerModeSnoozing = false; 1272 } 1273 updateLowPowerModeLocked(); 1274 } 1275 } 1276 } 1277 1278 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1279 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1280 // Don't wake when powered unless configured to do so. 1281 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1282 return false; 1283 } 1284 1285 // Don't wake when undocked from wireless charger. 1286 // See WirelessChargerDetector for justification. 1287 if (wasPowered && !mIsPowered 1288 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1289 return false; 1290 } 1291 1292 // Don't wake when docked on wireless charger unless we are certain of it. 1293 // See WirelessChargerDetector for justification. 1294 if (!wasPowered && mIsPowered 1295 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1296 && !dockedOnWirelessCharger) { 1297 return false; 1298 } 1299 1300 // If already dreaming and becoming powered, then don't wake. 1301 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1302 return false; 1303 } 1304 1305 // Otherwise wake up! 1306 return true; 1307 } 1308 1309 /** 1310 * Updates the value of mStayOn. 1311 * Sets DIRTY_STAY_ON if a change occurred. 1312 */ 1313 private void updateStayOnLocked(int dirty) { 1314 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1315 final boolean wasStayOn = mStayOn; 1316 if (mStayOnWhilePluggedInSetting != 0 1317 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1318 mStayOn = mBatteryManagerInternal.isPowered(mStayOnWhilePluggedInSetting); 1319 } else { 1320 mStayOn = false; 1321 } 1322 1323 if (mStayOn != wasStayOn) { 1324 mDirty |= DIRTY_STAY_ON; 1325 } 1326 } 1327 } 1328 1329 /** 1330 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1331 * Note that most wake-locks are ignored when the system is asleep. 1332 * 1333 * This function must have no other side-effects. 1334 */ 1335 @SuppressWarnings("deprecation") 1336 private void updateWakeLockSummaryLocked(int dirty) { 1337 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1338 mWakeLockSummary = 0; 1339 1340 final int numWakeLocks = mWakeLocks.size(); 1341 for (int i = 0; i < numWakeLocks; i++) { 1342 final WakeLock wakeLock = mWakeLocks.get(i); 1343 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1344 case PowerManager.PARTIAL_WAKE_LOCK: 1345 mWakeLockSummary |= WAKE_LOCK_CPU; 1346 break; 1347 case PowerManager.FULL_WAKE_LOCK: 1348 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1349 break; 1350 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1351 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1352 break; 1353 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1354 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1355 break; 1356 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1357 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1358 break; 1359 case PowerManager.DOZE_WAKE_LOCK: 1360 mWakeLockSummary |= WAKE_LOCK_DOZE; 1361 break; 1362 } 1363 } 1364 1365 // Cancel wake locks that make no sense based on the current state. 1366 if (mWakefulness != WAKEFULNESS_DOZING) { 1367 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1368 } 1369 if (mWakefulness == WAKEFULNESS_ASLEEP 1370 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1371 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1372 | WAKE_LOCK_BUTTON_BRIGHT); 1373 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1374 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1375 } 1376 } 1377 1378 // Infer implied wake locks where necessary based on the current state. 1379 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1380 if (mWakefulness == WAKEFULNESS_AWAKE) { 1381 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1382 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1383 mWakeLockSummary |= WAKE_LOCK_CPU; 1384 } 1385 } 1386 1387 if (DEBUG_SPEW) { 1388 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1389 + wakefulnessToString(mWakefulness) 1390 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1391 } 1392 } 1393 } 1394 1395 /** 1396 * Updates the value of mUserActivitySummary to summarize the user requested 1397 * state of the system such as whether the screen should be bright or dim. 1398 * Note that user activity is ignored when the system is asleep. 1399 * 1400 * This function must have no other side-effects. 1401 */ 1402 private void updateUserActivitySummaryLocked(long now, int dirty) { 1403 // Update the status of the user activity timeout timer. 1404 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1405 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1406 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1407 1408 long nextTimeout = 0; 1409 if (mWakefulness == WAKEFULNESS_AWAKE 1410 || mWakefulness == WAKEFULNESS_DREAMING 1411 || mWakefulness == WAKEFULNESS_DOZING) { 1412 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1413 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1414 1415 mUserActivitySummary = 0; 1416 if (mLastUserActivityTime >= mLastWakeTime) { 1417 nextTimeout = mLastUserActivityTime 1418 + screenOffTimeout - screenDimDuration; 1419 if (now < nextTimeout) { 1420 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1421 } else { 1422 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1423 if (now < nextTimeout) { 1424 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1425 } 1426 } 1427 } 1428 if (mUserActivitySummary == 0 1429 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1430 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1431 if (now < nextTimeout) { 1432 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_BRIGHT) { 1433 mUserActivitySummary = USER_ACTIVITY_SCREEN_BRIGHT; 1434 } else if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DIM) { 1435 mUserActivitySummary = USER_ACTIVITY_SCREEN_DIM; 1436 } 1437 } 1438 } 1439 if (mUserActivitySummary != 0) { 1440 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1441 msg.setAsynchronous(true); 1442 mHandler.sendMessageAtTime(msg, nextTimeout); 1443 } 1444 } else { 1445 mUserActivitySummary = 0; 1446 } 1447 1448 if (DEBUG_SPEW) { 1449 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1450 + wakefulnessToString(mWakefulness) 1451 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1452 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1453 } 1454 } 1455 } 1456 1457 /** 1458 * Called when a user activity timeout has occurred. 1459 * Simply indicates that something about user activity has changed so that the new 1460 * state can be recomputed when the power state is updated. 1461 * 1462 * This function must have no other side-effects besides setting the dirty 1463 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1464 */ 1465 private void handleUserActivityTimeout() { // runs on handler thread 1466 synchronized (mLock) { 1467 if (DEBUG_SPEW) { 1468 Slog.d(TAG, "handleUserActivityTimeout"); 1469 } 1470 1471 mDirty |= DIRTY_USER_ACTIVITY; 1472 updatePowerStateLocked(); 1473 } 1474 } 1475 1476 private int getScreenOffTimeoutLocked() { 1477 int timeout = mScreenOffTimeoutSetting; 1478 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1479 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1480 } 1481 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1482 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1483 } 1484 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1485 } 1486 1487 private int getScreenDimDurationLocked(int screenOffTimeout) { 1488 return Math.min(mMaximumScreenDimDurationConfig, 1489 (int)(screenOffTimeout * mMaximumScreenDimRatioConfig)); 1490 } 1491 1492 /** 1493 * Updates the wakefulness of the device. 1494 * 1495 * This is the function that decides whether the device should start dreaming 1496 * based on the current wake locks and user activity state. It may modify mDirty 1497 * if the wakefulness changes. 1498 * 1499 * Returns true if the wakefulness changed and we need to restart power state calculation. 1500 */ 1501 private boolean updateWakefulnessLocked(int dirty) { 1502 boolean changed = false; 1503 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1504 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1505 | DIRTY_DOCK_STATE)) != 0) { 1506 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1507 if (DEBUG_SPEW) { 1508 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1509 } 1510 final long time = SystemClock.uptimeMillis(); 1511 if (shouldNapAtBedTimeLocked()) { 1512 changed = napNoUpdateLocked(time); 1513 } else { 1514 changed = goToSleepNoUpdateLocked(time, 1515 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0); 1516 } 1517 } 1518 } 1519 return changed; 1520 } 1521 1522 /** 1523 * Returns true if the device should automatically nap and start dreaming when the user 1524 * activity timeout has expired and it's bedtime. 1525 */ 1526 private boolean shouldNapAtBedTimeLocked() { 1527 return mDreamsActivateOnSleepSetting 1528 || (mDreamsActivateOnDockSetting 1529 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1530 } 1531 1532 /** 1533 * Returns true if the device should go to sleep now. 1534 * Also used when exiting a dream to determine whether we should go back 1535 * to being fully awake or else go to sleep for good. 1536 */ 1537 private boolean isItBedTimeYetLocked() { 1538 return mBootCompleted && !isBeingKeptAwakeLocked(); 1539 } 1540 1541 /** 1542 * Returns true if the device is being kept awake by a wake lock, user activity 1543 * or the stay on while powered setting. We also keep the phone awake when 1544 * the proximity sensor returns a positive result so that the device does not 1545 * lock while in a phone call. This function only controls whether the device 1546 * will go to sleep or dream which is independent of whether it will be allowed 1547 * to suspend. 1548 */ 1549 private boolean isBeingKeptAwakeLocked() { 1550 return mStayOn 1551 || mProximityPositive 1552 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1553 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1554 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1555 } 1556 1557 /** 1558 * Determines whether to post a message to the sandman to update the dream state. 1559 */ 1560 private void updateDreamLocked(int dirty) { 1561 if ((dirty & (DIRTY_WAKEFULNESS 1562 | DIRTY_USER_ACTIVITY 1563 | DIRTY_WAKE_LOCKS 1564 | DIRTY_BOOT_COMPLETED 1565 | DIRTY_SETTINGS 1566 | DIRTY_IS_POWERED 1567 | DIRTY_STAY_ON 1568 | DIRTY_PROXIMITY_POSITIVE 1569 | DIRTY_BATTERY_STATE)) != 0) { 1570 scheduleSandmanLocked(); 1571 } 1572 } 1573 1574 private void scheduleSandmanLocked() { 1575 if (!mSandmanScheduled) { 1576 mSandmanScheduled = true; 1577 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1578 msg.setAsynchronous(true); 1579 mHandler.sendMessage(msg); 1580 } 1581 } 1582 1583 /** 1584 * Called when the device enters or exits a dreaming or dozing state. 1585 * 1586 * We do this asynchronously because we must call out of the power manager to start 1587 * the dream and we don't want to hold our lock while doing so. There is a risk that 1588 * the device will wake or go to sleep in the meantime so we have to handle that case. 1589 */ 1590 private void handleSandman() { // runs on handler thread 1591 // Handle preconditions. 1592 final boolean startDreaming; 1593 final int wakefulness; 1594 synchronized (mLock) { 1595 mSandmanScheduled = false; 1596 wakefulness = mWakefulness; 1597 if (mSandmanSummoned) { 1598 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1599 || wakefulness == WAKEFULNESS_DOZING); 1600 mSandmanSummoned = false; 1601 } else { 1602 startDreaming = false; 1603 } 1604 } 1605 1606 // Start dreaming if needed. 1607 // We only control the dream on the handler thread, so we don't need to worry about 1608 // concurrent attempts to start or stop the dream. 1609 final boolean isDreaming; 1610 if (mDreamManager != null) { 1611 // Restart the dream whenever the sandman is summoned. 1612 if (startDreaming) { 1613 mDreamManager.stopDream(false /*immediate*/); 1614 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1615 } 1616 isDreaming = mDreamManager.isDreaming(); 1617 } else { 1618 isDreaming = false; 1619 } 1620 1621 // Update dream state. 1622 synchronized (mLock) { 1623 // Remember the initial battery level when the dream started. 1624 if (startDreaming && isDreaming) { 1625 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1626 if (wakefulness == WAKEFULNESS_DOZING) { 1627 Slog.i(TAG, "Dozing..."); 1628 } else { 1629 Slog.i(TAG, "Dreaming..."); 1630 } 1631 } 1632 1633 // If preconditions changed, wait for the next iteration to determine 1634 // whether the dream should continue (or be restarted). 1635 if (mSandmanSummoned || mWakefulness != wakefulness) { 1636 return; // wait for next cycle 1637 } 1638 1639 // Determine whether the dream should continue. 1640 if (wakefulness == WAKEFULNESS_DREAMING) { 1641 if (isDreaming && canDreamLocked()) { 1642 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1643 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1644 - mDreamsBatteryLevelDrainCutoffConfig 1645 && !isBeingKeptAwakeLocked()) { 1646 // If the user activity timeout expired and the battery appears 1647 // to be draining faster than it is charging then stop dreaming 1648 // and go to sleep. 1649 Slog.i(TAG, "Stopping dream because the battery appears to " 1650 + "be draining faster than it is charging. " 1651 + "Battery level when dream started: " 1652 + mBatteryLevelWhenDreamStarted + "%. " 1653 + "Battery level now: " + mBatteryLevel + "%."); 1654 } else { 1655 return; // continue dreaming 1656 } 1657 } 1658 1659 // Dream has ended or will be stopped. Update the power state. 1660 if (isItBedTimeYetLocked()) { 1661 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1662 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0); 1663 updatePowerStateLocked(); 1664 } else { 1665 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1666 updatePowerStateLocked(); 1667 } 1668 } else if (wakefulness == WAKEFULNESS_DOZING) { 1669 if (isDreaming) { 1670 return; // continue dozing 1671 } 1672 1673 // Doze has ended or will be stopped. Update the power state. 1674 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1675 updatePowerStateLocked(); 1676 } 1677 } 1678 1679 // Stop dream. 1680 if (isDreaming) { 1681 mDreamManager.stopDream(false /*immediate*/); 1682 } 1683 } 1684 1685 /** 1686 * Returns true if the device is allowed to dream in its current state. 1687 * This function is not called when dozing. 1688 */ 1689 private boolean canDreamLocked() { 1690 if (mWakefulness != WAKEFULNESS_DREAMING 1691 || !mDreamsSupportedConfig 1692 || !mDreamsEnabledSetting 1693 || !mDisplayPowerRequest.isBrightOrDim() 1694 || !mBootCompleted) { 1695 return false; 1696 } 1697 if (!isBeingKeptAwakeLocked()) { 1698 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1699 return false; 1700 } 1701 if (!mIsPowered 1702 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1703 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1704 return false; 1705 } 1706 if (mIsPowered 1707 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1708 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1709 return false; 1710 } 1711 } 1712 return true; 1713 } 1714 1715 private void handleScreenOnBlockerReleased() { 1716 synchronized (mLock) { 1717 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1718 updatePowerStateLocked(); 1719 } 1720 } 1721 1722 /** 1723 * Updates the display power state asynchronously. 1724 * When the update is finished, mDisplayReady will be set to true. The display 1725 * controller posts a message to tell us when the actual display power state 1726 * has been updated so we come back here to double-check and finish up. 1727 * 1728 * This function recalculates the display power state each time. 1729 */ 1730 private void updateDisplayPowerStateLocked(int dirty) { 1731 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1732 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1733 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1734 mDisplayPowerRequest.policy = getDesiredScreenPolicyLocked(); 1735 1736 int screenBrightness = mScreenBrightnessSettingDefault; 1737 float screenAutoBrightnessAdjustment = 0.0f; 1738 boolean autoBrightness = (mScreenBrightnessModeSetting == 1739 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1740 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1741 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1742 autoBrightness = false; 1743 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1744 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1745 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1746 screenBrightness = mScreenBrightnessSetting; 1747 } 1748 if (autoBrightness) { 1749 screenBrightness = mScreenBrightnessSettingDefault; 1750 if (isValidAutoBrightnessAdjustment( 1751 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1752 screenAutoBrightnessAdjustment = 1753 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1754 } else if (isValidAutoBrightnessAdjustment( 1755 mScreenAutoBrightnessAdjustmentSetting)) { 1756 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1757 } 1758 } 1759 screenBrightness = Math.max(Math.min(screenBrightness, 1760 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1761 screenAutoBrightnessAdjustment = Math.max(Math.min( 1762 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1763 mDisplayPowerRequest.screenBrightness = screenBrightness; 1764 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1765 screenAutoBrightnessAdjustment; 1766 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1767 1768 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1769 1770 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1771 1772 mDisplayPowerRequest.lowPowerMode = mLowPowerModeEnabled; 1773 1774 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DOZE) { 1775 mDisplayPowerRequest.dozeScreenState = mDozeScreenStateOverrideFromDreamManager; 1776 mDisplayPowerRequest.dozeScreenBrightness = 1777 mDozeScreenBrightnessOverrideFromDreamManager; 1778 } else { 1779 mDisplayPowerRequest.dozeScreenState = Display.STATE_UNKNOWN; 1780 mDisplayPowerRequest.dozeScreenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 1781 } 1782 1783 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1784 mRequestWaitForNegativeProximity); 1785 mRequestWaitForNegativeProximity = false; 1786 1787 if (DEBUG_SPEW) { 1788 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1789 + ", policy=" + mDisplayPowerRequest.policy 1790 + ", mWakefulness=" + mWakefulness 1791 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1792 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1793 + ", mBootCompleted=" + mBootCompleted); 1794 } 1795 } 1796 } 1797 1798 private static boolean isValidBrightness(int value) { 1799 return value >= 0 && value <= 255; 1800 } 1801 1802 private static boolean isValidAutoBrightnessAdjustment(float value) { 1803 // Handles NaN by always returning false. 1804 return value >= -1.0f && value <= 1.0f; 1805 } 1806 1807 private int getDesiredScreenPolicyLocked() { 1808 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1809 return DisplayPowerRequest.POLICY_OFF; 1810 } 1811 1812 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1813 return DisplayPowerRequest.POLICY_DOZE; 1814 } 1815 1816 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1817 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1818 || !mBootCompleted) { 1819 return DisplayPowerRequest.POLICY_BRIGHT; 1820 } 1821 1822 return DisplayPowerRequest.POLICY_DIM; 1823 } 1824 1825 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1826 new DisplayManagerInternal.DisplayPowerCallbacks() { 1827 private int mDisplayState = Display.STATE_UNKNOWN; 1828 1829 @Override 1830 public void onStateChanged() { 1831 synchronized (mLock) { 1832 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1833 updatePowerStateLocked(); 1834 } 1835 } 1836 1837 @Override 1838 public void onProximityPositive() { 1839 synchronized (mLock) { 1840 mProximityPositive = true; 1841 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1842 updatePowerStateLocked(); 1843 } 1844 } 1845 1846 @Override 1847 public void onProximityNegative() { 1848 synchronized (mLock) { 1849 mProximityPositive = false; 1850 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1851 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1852 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1853 updatePowerStateLocked(); 1854 } 1855 } 1856 1857 @Override 1858 public void onDisplayStateChange(int state) { 1859 // This method is only needed to support legacy display blanking behavior 1860 // where the display's power state is coupled to suspend or to the power HAL. 1861 // The order of operations matters here. 1862 synchronized (mLock) { 1863 if (mDisplayState != state) { 1864 mDisplayState = state; 1865 if (state == Display.STATE_OFF) { 1866 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1867 setHalInteractiveModeLocked(false); 1868 } 1869 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1870 setHalAutoSuspendModeLocked(true); 1871 } 1872 } else { 1873 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1874 setHalAutoSuspendModeLocked(false); 1875 } 1876 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1877 setHalInteractiveModeLocked(true); 1878 } 1879 } 1880 } 1881 } 1882 } 1883 1884 @Override 1885 public void acquireSuspendBlocker() { 1886 mDisplaySuspendBlocker.acquire(); 1887 } 1888 1889 @Override 1890 public void releaseSuspendBlocker() { 1891 mDisplaySuspendBlocker.release(); 1892 } 1893 1894 @Override 1895 public String toString() { 1896 synchronized (this) { 1897 return "state=" + Display.stateToString(mDisplayState); 1898 } 1899 } 1900 }; 1901 1902 private boolean shouldUseProximitySensorLocked() { 1903 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1904 } 1905 1906 /** 1907 * Updates the suspend blocker that keeps the CPU alive. 1908 * 1909 * This function must have no other side-effects. 1910 */ 1911 private void updateSuspendBlockerLocked() { 1912 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1913 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1914 final boolean autoSuspend = !needDisplaySuspendBlocker; 1915 1916 // Disable auto-suspend if needed. 1917 if (!autoSuspend) { 1918 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1919 setHalAutoSuspendModeLocked(false); 1920 } 1921 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1922 setHalInteractiveModeLocked(true); 1923 } 1924 } 1925 1926 // First acquire suspend blockers if needed. 1927 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1928 mWakeLockSuspendBlocker.acquire(); 1929 mHoldingWakeLockSuspendBlocker = true; 1930 } 1931 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1932 mDisplaySuspendBlocker.acquire(); 1933 mHoldingDisplaySuspendBlocker = true; 1934 } 1935 1936 // Then release suspend blockers if needed. 1937 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1938 mWakeLockSuspendBlocker.release(); 1939 mHoldingWakeLockSuspendBlocker = false; 1940 } 1941 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1942 mDisplaySuspendBlocker.release(); 1943 mHoldingDisplaySuspendBlocker = false; 1944 } 1945 1946 // Enable auto-suspend if needed. 1947 if (autoSuspend) { 1948 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1949 setHalInteractiveModeLocked(false); 1950 } 1951 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1952 setHalAutoSuspendModeLocked(true); 1953 } 1954 } 1955 } 1956 1957 /** 1958 * Return true if we must keep a suspend blocker active on behalf of the display. 1959 * We do so if the screen is on or is in transition between states. 1960 */ 1961 private boolean needDisplaySuspendBlockerLocked() { 1962 if (!mDisplayReady) { 1963 return true; 1964 } 1965 if (mDisplayPowerRequest.isBrightOrDim()) { 1966 // If we asked for the screen to be on but it is off due to the proximity 1967 // sensor then we may suspend but only if the configuration allows it. 1968 // On some hardware it may not be safe to suspend because the proximity 1969 // sensor may not be correctly configured as a wake-up source. 1970 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1971 || !mSuspendWhenScreenOffDueToProximityConfig) { 1972 return true; 1973 } 1974 } 1975 // Let the system suspend if the screen is off or dozing. 1976 return false; 1977 } 1978 1979 private void setHalAutoSuspendModeLocked(boolean enable) { 1980 if (enable != mHalAutoSuspendModeEnabled) { 1981 if (DEBUG) { 1982 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 1983 } 1984 mHalAutoSuspendModeEnabled = enable; 1985 nativeSetAutoSuspend(enable); 1986 } 1987 } 1988 1989 private void setHalInteractiveModeLocked(boolean enable) { 1990 if (enable != mHalInteractiveModeEnabled) { 1991 if (DEBUG) { 1992 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 1993 } 1994 mHalInteractiveModeEnabled = enable; 1995 nativeSetInteractive(enable); 1996 } 1997 } 1998 1999 private boolean isInteractiveInternal() { 2000 synchronized (mLock) { 2001 return mInteractive; 2002 } 2003 } 2004 2005 private boolean isLowPowerModeInternal() { 2006 synchronized (mLock) { 2007 return mLowPowerModeEnabled; 2008 } 2009 } 2010 2011 private void handleBatteryStateChangedLocked() { 2012 mDirty |= DIRTY_BATTERY_STATE; 2013 updatePowerStateLocked(); 2014 } 2015 2016 private void startWatchingForBootAnimationFinished() { 2017 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 2018 } 2019 2020 private void checkIfBootAnimationFinished() { 2021 if (DEBUG) { 2022 Slog.d(TAG, "Check if boot animation finished..."); 2023 } 2024 2025 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 2026 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 2027 BOOT_ANIMATION_POLL_INTERVAL); 2028 return; 2029 } 2030 2031 synchronized (mLock) { 2032 if (!mBootCompleted) { 2033 Slog.i(TAG, "Boot animation finished."); 2034 handleBootCompletedLocked(); 2035 } 2036 } 2037 } 2038 2039 private void handleBootCompletedLocked() { 2040 final long now = SystemClock.uptimeMillis(); 2041 mBootCompleted = true; 2042 mDirty |= DIRTY_BOOT_COMPLETED; 2043 userActivityNoUpdateLocked( 2044 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 2045 updatePowerStateLocked(); 2046 } 2047 2048 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 2049 final String reason, boolean wait) { 2050 if (mHandler == null || !mSystemReady) { 2051 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 2052 } 2053 2054 Runnable runnable = new Runnable() { 2055 @Override 2056 public void run() { 2057 synchronized (this) { 2058 if (shutdown) { 2059 ShutdownThread.shutdown(mContext, confirm); 2060 } else { 2061 ShutdownThread.reboot(mContext, reason, confirm); 2062 } 2063 } 2064 } 2065 }; 2066 2067 // ShutdownThread must run on a looper capable of displaying the UI. 2068 Message msg = Message.obtain(mHandler, runnable); 2069 msg.setAsynchronous(true); 2070 mHandler.sendMessage(msg); 2071 2072 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 2073 if (wait) { 2074 synchronized (runnable) { 2075 while (true) { 2076 try { 2077 runnable.wait(); 2078 } catch (InterruptedException e) { 2079 } 2080 } 2081 } 2082 } 2083 } 2084 2085 private void crashInternal(final String message) { 2086 Thread t = new Thread("PowerManagerService.crash()") { 2087 @Override 2088 public void run() { 2089 throw new RuntimeException(message); 2090 } 2091 }; 2092 try { 2093 t.start(); 2094 t.join(); 2095 } catch (InterruptedException e) { 2096 Log.wtf(TAG, e); 2097 } 2098 } 2099 2100 private void setStayOnSettingInternal(int val) { 2101 Settings.Global.putInt(mContext.getContentResolver(), 2102 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 2103 } 2104 2105 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 2106 synchronized (mLock) { 2107 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 2108 mDirty |= DIRTY_SETTINGS; 2109 updatePowerStateLocked(); 2110 } 2111 } 2112 2113 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 2114 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 2115 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 2116 } 2117 2118 private void setAttentionLightInternal(boolean on, int color) { 2119 Light light; 2120 synchronized (mLock) { 2121 if (!mSystemReady) { 2122 return; 2123 } 2124 light = mAttentionLight; 2125 } 2126 2127 // Control light outside of lock. 2128 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 2129 } 2130 2131 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 2132 synchronized (mLock) { 2133 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 2134 mScreenBrightnessOverrideFromWindowManager = brightness; 2135 mDirty |= DIRTY_SETTINGS; 2136 updatePowerStateLocked(); 2137 } 2138 } 2139 } 2140 2141 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 2142 synchronized (mLock) { 2143 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 2144 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 2145 mDirty |= DIRTY_SETTINGS; 2146 updatePowerStateLocked(); 2147 } 2148 } 2149 } 2150 2151 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2152 synchronized (mLock) { 2153 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2154 mTemporaryScreenBrightnessSettingOverride = brightness; 2155 mDirty |= DIRTY_SETTINGS; 2156 updatePowerStateLocked(); 2157 } 2158 } 2159 } 2160 2161 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2162 synchronized (mLock) { 2163 // Note: This condition handles NaN because NaN is not equal to any other 2164 // value, including itself. 2165 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2166 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2167 mDirty |= DIRTY_SETTINGS; 2168 updatePowerStateLocked(); 2169 } 2170 } 2171 } 2172 2173 private void setDozeOverrideFromDreamManagerInternal( 2174 int screenState, int screenBrightness) { 2175 synchronized (mLock) { 2176 if (mDozeScreenStateOverrideFromDreamManager != screenState 2177 || mDozeScreenBrightnessOverrideFromDreamManager != screenBrightness) { 2178 mDozeScreenStateOverrideFromDreamManager = screenState; 2179 mDozeScreenBrightnessOverrideFromDreamManager = screenBrightness; 2180 mDirty |= DIRTY_SETTINGS; 2181 updatePowerStateLocked(); 2182 } 2183 } 2184 } 2185 2186 private void powerHintInternal(int hintId, int data) { 2187 nativeSendPowerHint(hintId, data); 2188 } 2189 2190 private static void setSurfaceFlingerLowPowerMode(int enabled) { 2191 try { 2192 final IBinder flinger = ServiceManager.getService("SurfaceFlinger"); 2193 if (flinger != null) { 2194 final Parcel data = Parcel.obtain(); 2195 data.writeInterfaceToken("android.ui.ISurfaceComposer"); 2196 data.writeInt(enabled); 2197 flinger.transact(1016, data, null, 0); 2198 data.recycle(); 2199 } 2200 } catch (RemoteException ex) { 2201 Slog.e(TAG, "Failed to reduce refresh rate", ex); 2202 } 2203 } 2204 2205 /** 2206 * Low-level function turn the device off immediately, without trying 2207 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2208 */ 2209 public static void lowLevelShutdown() { 2210 SystemProperties.set("sys.powerctl", "shutdown"); 2211 } 2212 2213 /** 2214 * Low-level function to reboot the device. On success, this 2215 * function doesn't return. If more than 20 seconds passes from 2216 * the time a reboot is requested (120 seconds for reboot to 2217 * recovery), this method returns. 2218 * 2219 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2220 */ 2221 public static void lowLevelReboot(String reason) { 2222 if (reason == null) { 2223 reason = ""; 2224 } 2225 long duration; 2226 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2227 // If we are rebooting to go into recovery, instead of 2228 // setting sys.powerctl directly we'll start the 2229 // pre-recovery service which will do some preparation for 2230 // recovery and then reboot for us. 2231 // 2232 // This preparation can take more than 20 seconds if 2233 // there's a very large update package, so lengthen the 2234 // timeout. 2235 SystemProperties.set("ctl.start", "pre-recovery"); 2236 duration = 120 * 1000L; 2237 } else { 2238 SystemProperties.set("sys.powerctl", "reboot," + reason); 2239 duration = 20 * 1000L; 2240 } 2241 try { 2242 Thread.sleep(duration); 2243 } catch (InterruptedException e) { 2244 Thread.currentThread().interrupt(); 2245 } 2246 } 2247 2248 @Override // Watchdog.Monitor implementation 2249 public void monitor() { 2250 // Grab and release lock for watchdog monitor to detect deadlocks. 2251 synchronized (mLock) { 2252 } 2253 } 2254 2255 private void dumpInternal(PrintWriter pw) { 2256 pw.println("POWER MANAGER (dumpsys power)\n"); 2257 2258 final WirelessChargerDetector wcd; 2259 synchronized (mLock) { 2260 pw.println("Power Manager State:"); 2261 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2262 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2263 pw.println(" mInteractive=" + mInteractive); 2264 pw.println(" mIsPowered=" + mIsPowered); 2265 pw.println(" mPlugType=" + mPlugType); 2266 pw.println(" mBatteryLevel=" + mBatteryLevel); 2267 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2268 pw.println(" mDockState=" + mDockState); 2269 pw.println(" mStayOn=" + mStayOn); 2270 pw.println(" mProximityPositive=" + mProximityPositive); 2271 pw.println(" mBootCompleted=" + mBootCompleted); 2272 pw.println(" mSystemReady=" + mSystemReady); 2273 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2274 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2275 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2276 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2277 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2278 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2279 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2280 pw.println(" mLowPowerModeEnabled=" + mLowPowerModeEnabled); 2281 pw.println(" mBatteryLevelLow=" + mBatteryLevelLow); 2282 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2283 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2284 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2285 pw.println(" mLastUserActivityTimeNoChangeLights=" 2286 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2287 pw.println(" mDisplayReady=" + mDisplayReady); 2288 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2289 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2290 2291 pw.println(); 2292 pw.println("Settings and Configuration:"); 2293 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2294 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2295 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2296 + mDecoupleHalInteractiveModeFromDisplayConfig); 2297 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2298 + mWakeUpWhenPluggedOrUnpluggedConfig); 2299 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2300 + mSuspendWhenScreenOffDueToProximityConfig); 2301 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2302 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2303 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2304 + mDreamsActivatedOnSleepByDefaultConfig); 2305 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2306 + mDreamsActivatedOnDockByDefaultConfig); 2307 pw.println(" mDreamsEnabledOnBatteryConfig=" 2308 + mDreamsEnabledOnBatteryConfig); 2309 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2310 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2311 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2312 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2313 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2314 + mDreamsBatteryLevelDrainCutoffConfig); 2315 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2316 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2317 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2318 pw.println(" mLowPowerModeSetting=" + mLowPowerModeSetting); 2319 pw.println(" mAutoLowPowerModeEnabled=" + mAutoLowPowerModeEnabled); 2320 pw.println(" mAutoLowPowerModeSnoozing=" + mAutoLowPowerModeSnoozing); 2321 pw.println(" mMinimumScreenOffTimeoutConfig=" + mMinimumScreenOffTimeoutConfig); 2322 pw.println(" mMaximumScreenDimDurationConfig=" + mMaximumScreenDimDurationConfig); 2323 pw.println(" mMaximumScreenDimRatioConfig=" + mMaximumScreenDimRatioConfig); 2324 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2325 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2326 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2327 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2328 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2329 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2330 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2331 + mScreenAutoBrightnessAdjustmentSetting); 2332 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2333 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2334 + mScreenBrightnessOverrideFromWindowManager); 2335 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2336 + mUserActivityTimeoutOverrideFromWindowManager); 2337 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2338 + mTemporaryScreenBrightnessSettingOverride); 2339 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2340 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2341 pw.println(" mDozeScreenStateOverrideFromDreamManager=" 2342 + mDozeScreenStateOverrideFromDreamManager); 2343 pw.println(" mDozeScreenBrightnessOverrideFromDreamManager=" 2344 + mDozeScreenBrightnessOverrideFromDreamManager); 2345 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2346 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2347 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2348 2349 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2350 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2351 pw.println(); 2352 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2353 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2354 2355 pw.println(); 2356 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2357 for (WakeLock wl : mWakeLocks) { 2358 pw.println(" " + wl); 2359 } 2360 2361 pw.println(); 2362 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2363 for (SuspendBlocker sb : mSuspendBlockers) { 2364 pw.println(" " + sb); 2365 } 2366 2367 pw.println(); 2368 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2369 2370 pw.println(); 2371 pw.println("Display Power: " + mDisplayPowerCallbacks); 2372 2373 wcd = mWirelessChargerDetector; 2374 } 2375 2376 if (wcd != null) { 2377 wcd.dump(pw); 2378 } 2379 } 2380 2381 private SuspendBlocker createSuspendBlockerLocked(String name) { 2382 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2383 mSuspendBlockers.add(suspendBlocker); 2384 return suspendBlocker; 2385 } 2386 2387 private static String wakefulnessToString(int wakefulness) { 2388 switch (wakefulness) { 2389 case WAKEFULNESS_ASLEEP: 2390 return "Asleep"; 2391 case WAKEFULNESS_AWAKE: 2392 return "Awake"; 2393 case WAKEFULNESS_DREAMING: 2394 return "Dreaming"; 2395 case WAKEFULNESS_DOZING: 2396 return "Dozing"; 2397 default: 2398 return Integer.toString(wakefulness); 2399 } 2400 } 2401 2402 private static WorkSource copyWorkSource(WorkSource workSource) { 2403 return workSource != null ? new WorkSource(workSource) : null; 2404 } 2405 2406 private final class BatteryReceiver extends BroadcastReceiver { 2407 @Override 2408 public void onReceive(Context context, Intent intent) { 2409 synchronized (mLock) { 2410 handleBatteryStateChangedLocked(); 2411 } 2412 } 2413 } 2414 2415 private final class DreamReceiver extends BroadcastReceiver { 2416 @Override 2417 public void onReceive(Context context, Intent intent) { 2418 synchronized (mLock) { 2419 scheduleSandmanLocked(); 2420 } 2421 } 2422 } 2423 2424 private final class UserSwitchedReceiver extends BroadcastReceiver { 2425 @Override 2426 public void onReceive(Context context, Intent intent) { 2427 synchronized (mLock) { 2428 handleSettingsChangedLocked(); 2429 } 2430 } 2431 } 2432 2433 private final class DockReceiver extends BroadcastReceiver { 2434 @Override 2435 public void onReceive(Context context, Intent intent) { 2436 synchronized (mLock) { 2437 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2438 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2439 if (mDockState != dockState) { 2440 mDockState = dockState; 2441 mDirty |= DIRTY_DOCK_STATE; 2442 updatePowerStateLocked(); 2443 } 2444 } 2445 } 2446 } 2447 2448 private final class SettingsObserver extends ContentObserver { 2449 public SettingsObserver(Handler handler) { 2450 super(handler); 2451 } 2452 2453 @Override 2454 public void onChange(boolean selfChange, Uri uri) { 2455 synchronized (mLock) { 2456 handleSettingsChangedLocked(); 2457 } 2458 } 2459 } 2460 2461 /** 2462 * Handler for asynchronous operations performed by the power manager. 2463 */ 2464 private final class PowerManagerHandler extends Handler { 2465 public PowerManagerHandler(Looper looper) { 2466 super(looper, null, true /*async*/); 2467 } 2468 2469 @Override 2470 public void handleMessage(Message msg) { 2471 switch (msg.what) { 2472 case MSG_USER_ACTIVITY_TIMEOUT: 2473 handleUserActivityTimeout(); 2474 break; 2475 case MSG_SANDMAN: 2476 handleSandman(); 2477 break; 2478 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2479 handleScreenOnBlockerReleased(); 2480 break; 2481 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2482 checkIfBootAnimationFinished(); 2483 break; 2484 } 2485 } 2486 } 2487 2488 /** 2489 * Represents a wake lock that has been acquired by an application. 2490 */ 2491 private final class WakeLock implements IBinder.DeathRecipient { 2492 public final IBinder mLock; 2493 public int mFlags; 2494 public String mTag; 2495 public final String mPackageName; 2496 public WorkSource mWorkSource; 2497 public String mHistoryTag; 2498 public final int mOwnerUid; 2499 public final int mOwnerPid; 2500 public boolean mNotifiedAcquired; 2501 2502 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2503 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2504 mLock = lock; 2505 mFlags = flags; 2506 mTag = tag; 2507 mPackageName = packageName; 2508 mWorkSource = copyWorkSource(workSource); 2509 mHistoryTag = historyTag; 2510 mOwnerUid = ownerUid; 2511 mOwnerPid = ownerPid; 2512 } 2513 2514 @Override 2515 public void binderDied() { 2516 PowerManagerService.this.handleWakeLockDeath(this); 2517 } 2518 2519 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2520 int ownerUid, int ownerPid) { 2521 return mFlags == flags 2522 && mTag.equals(tag) 2523 && hasSameWorkSource(workSource) 2524 && mOwnerUid == ownerUid 2525 && mOwnerPid == ownerPid; 2526 } 2527 2528 public void updateProperties(int flags, String tag, String packageName, 2529 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2530 if (!mPackageName.equals(packageName)) { 2531 throw new IllegalStateException("Existing wake lock package name changed: " 2532 + mPackageName + " to " + packageName); 2533 } 2534 if (mOwnerUid != ownerUid) { 2535 throw new IllegalStateException("Existing wake lock uid changed: " 2536 + mOwnerUid + " to " + ownerUid); 2537 } 2538 if (mOwnerPid != ownerPid) { 2539 throw new IllegalStateException("Existing wake lock pid changed: " 2540 + mOwnerPid + " to " + ownerPid); 2541 } 2542 mFlags = flags; 2543 mTag = tag; 2544 updateWorkSource(workSource); 2545 mHistoryTag = historyTag; 2546 } 2547 2548 public boolean hasSameWorkSource(WorkSource workSource) { 2549 return Objects.equal(mWorkSource, workSource); 2550 } 2551 2552 public void updateWorkSource(WorkSource workSource) { 2553 mWorkSource = copyWorkSource(workSource); 2554 } 2555 2556 @Override 2557 public String toString() { 2558 return getLockLevelString() 2559 + " '" + mTag + "'" + getLockFlagsString() 2560 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2561 } 2562 2563 @SuppressWarnings("deprecation") 2564 private String getLockLevelString() { 2565 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2566 case PowerManager.FULL_WAKE_LOCK: 2567 return "FULL_WAKE_LOCK "; 2568 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2569 return "SCREEN_BRIGHT_WAKE_LOCK "; 2570 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2571 return "SCREEN_DIM_WAKE_LOCK "; 2572 case PowerManager.PARTIAL_WAKE_LOCK: 2573 return "PARTIAL_WAKE_LOCK "; 2574 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2575 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2576 case PowerManager.DOZE_WAKE_LOCK: 2577 return "DOZE_WAKE_LOCK "; 2578 default: 2579 return "??? "; 2580 } 2581 } 2582 2583 private String getLockFlagsString() { 2584 String result = ""; 2585 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2586 result += " ACQUIRE_CAUSES_WAKEUP"; 2587 } 2588 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2589 result += " ON_AFTER_RELEASE"; 2590 } 2591 return result; 2592 } 2593 } 2594 2595 private final class SuspendBlockerImpl implements SuspendBlocker { 2596 private final String mName; 2597 private int mReferenceCount; 2598 2599 public SuspendBlockerImpl(String name) { 2600 mName = name; 2601 } 2602 2603 @Override 2604 protected void finalize() throws Throwable { 2605 try { 2606 if (mReferenceCount != 0) { 2607 Log.wtf(TAG, "Suspend blocker \"" + mName 2608 + "\" was finalized without being released!"); 2609 mReferenceCount = 0; 2610 nativeReleaseSuspendBlocker(mName); 2611 } 2612 } finally { 2613 super.finalize(); 2614 } 2615 } 2616 2617 @Override 2618 public void acquire() { 2619 synchronized (this) { 2620 mReferenceCount += 1; 2621 if (mReferenceCount == 1) { 2622 if (DEBUG_SPEW) { 2623 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2624 } 2625 nativeAcquireSuspendBlocker(mName); 2626 } 2627 } 2628 } 2629 2630 @Override 2631 public void release() { 2632 synchronized (this) { 2633 mReferenceCount -= 1; 2634 if (mReferenceCount == 0) { 2635 if (DEBUG_SPEW) { 2636 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2637 } 2638 nativeReleaseSuspendBlocker(mName); 2639 } else if (mReferenceCount < 0) { 2640 Log.wtf(TAG, "Suspend blocker \"" + mName 2641 + "\" was released without being acquired!", new Throwable()); 2642 mReferenceCount = 0; 2643 } 2644 } 2645 } 2646 2647 @Override 2648 public String toString() { 2649 synchronized (this) { 2650 return mName + ": ref count=" + mReferenceCount; 2651 } 2652 } 2653 } 2654 2655 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2656 private int mNestCount; 2657 2658 public boolean isHeld() { 2659 synchronized (this) { 2660 return mNestCount != 0; 2661 } 2662 } 2663 2664 @Override 2665 public void acquire() { 2666 synchronized (this) { 2667 mNestCount += 1; 2668 if (DEBUG) { 2669 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2670 } 2671 } 2672 } 2673 2674 @Override 2675 public void release() { 2676 synchronized (this) { 2677 mNestCount -= 1; 2678 if (mNestCount < 0) { 2679 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2680 new Throwable()); 2681 mNestCount = 0; 2682 } 2683 if (mNestCount == 0) { 2684 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2685 } 2686 if (DEBUG) { 2687 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2688 } 2689 } 2690 } 2691 2692 @Override 2693 public String toString() { 2694 synchronized (this) { 2695 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2696 } 2697 } 2698 } 2699 2700 private final class BinderService extends IPowerManager.Stub { 2701 @Override // Binder call 2702 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2703 String packageName, int uid) { 2704 if (uid < 0) { 2705 uid = Binder.getCallingUid(); 2706 } 2707 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2708 } 2709 2710 @Override // Binder call 2711 public void powerHint(int hintId, int data) { 2712 if (!mSystemReady) { 2713 // Service not ready yet, so who the heck cares about power hints, bah. 2714 return; 2715 } 2716 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2717 powerHintInternal(hintId, data); 2718 } 2719 2720 @Override // Binder call 2721 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2722 WorkSource ws, String historyTag) { 2723 if (lock == null) { 2724 throw new IllegalArgumentException("lock must not be null"); 2725 } 2726 if (packageName == null) { 2727 throw new IllegalArgumentException("packageName must not be null"); 2728 } 2729 PowerManager.validateWakeLockParameters(flags, tag); 2730 2731 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2732 if (ws != null && ws.size() != 0) { 2733 mContext.enforceCallingOrSelfPermission( 2734 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2735 } else { 2736 ws = null; 2737 } 2738 2739 final int uid = Binder.getCallingUid(); 2740 final int pid = Binder.getCallingPid(); 2741 final long ident = Binder.clearCallingIdentity(); 2742 try { 2743 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2744 } finally { 2745 Binder.restoreCallingIdentity(ident); 2746 } 2747 } 2748 2749 @Override // Binder call 2750 public void releaseWakeLock(IBinder lock, int flags) { 2751 if (lock == null) { 2752 throw new IllegalArgumentException("lock must not be null"); 2753 } 2754 2755 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2756 2757 final long ident = Binder.clearCallingIdentity(); 2758 try { 2759 releaseWakeLockInternal(lock, flags); 2760 } finally { 2761 Binder.restoreCallingIdentity(ident); 2762 } 2763 } 2764 2765 @Override // Binder call 2766 public void updateWakeLockUids(IBinder lock, int[] uids) { 2767 WorkSource ws = null; 2768 2769 if (uids != null) { 2770 ws = new WorkSource(); 2771 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2772 // one at a time? 2773 for (int i = 0; i < uids.length; i++) { 2774 ws.add(uids[i]); 2775 } 2776 } 2777 updateWakeLockWorkSource(lock, ws, null); 2778 } 2779 2780 @Override // Binder call 2781 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2782 if (lock == null) { 2783 throw new IllegalArgumentException("lock must not be null"); 2784 } 2785 2786 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2787 if (ws != null && ws.size() != 0) { 2788 mContext.enforceCallingOrSelfPermission( 2789 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2790 } else { 2791 ws = null; 2792 } 2793 2794 final long ident = Binder.clearCallingIdentity(); 2795 try { 2796 updateWakeLockWorkSourceInternal(lock, ws, historyTag); 2797 } finally { 2798 Binder.restoreCallingIdentity(ident); 2799 } 2800 } 2801 2802 @Override // Binder call 2803 public boolean isWakeLockLevelSupported(int level) { 2804 final long ident = Binder.clearCallingIdentity(); 2805 try { 2806 return isWakeLockLevelSupportedInternal(level); 2807 } finally { 2808 Binder.restoreCallingIdentity(ident); 2809 } 2810 } 2811 2812 @Override // Binder call 2813 public void userActivity(long eventTime, int event, int flags) { 2814 final long now = SystemClock.uptimeMillis(); 2815 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2816 != PackageManager.PERMISSION_GRANTED) { 2817 // Once upon a time applications could call userActivity(). 2818 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2819 // request instead of throwing a SecurityException so we don't break old apps. 2820 synchronized (mLock) { 2821 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2822 mLastWarningAboutUserActivityPermission = now; 2823 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2824 + "caller does not have DEVICE_POWER permission. " 2825 + "Please fix your app! " 2826 + " pid=" + Binder.getCallingPid() 2827 + " uid=" + Binder.getCallingUid()); 2828 } 2829 } 2830 return; 2831 } 2832 2833 if (eventTime > SystemClock.uptimeMillis()) { 2834 throw new IllegalArgumentException("event time must not be in the future"); 2835 } 2836 2837 final int uid = Binder.getCallingUid(); 2838 final long ident = Binder.clearCallingIdentity(); 2839 try { 2840 userActivityInternal(eventTime, event, flags, uid); 2841 } finally { 2842 Binder.restoreCallingIdentity(ident); 2843 } 2844 } 2845 2846 @Override // Binder call 2847 public void wakeUp(long eventTime) { 2848 if (eventTime > SystemClock.uptimeMillis()) { 2849 throw new IllegalArgumentException("event time must not be in the future"); 2850 } 2851 2852 mContext.enforceCallingOrSelfPermission( 2853 android.Manifest.permission.DEVICE_POWER, null); 2854 2855 final long ident = Binder.clearCallingIdentity(); 2856 try { 2857 wakeUpInternal(eventTime); 2858 } finally { 2859 Binder.restoreCallingIdentity(ident); 2860 } 2861 } 2862 2863 @Override // Binder call 2864 public void goToSleep(long eventTime, int reason, int flags) { 2865 if (eventTime > SystemClock.uptimeMillis()) { 2866 throw new IllegalArgumentException("event time must not be in the future"); 2867 } 2868 2869 mContext.enforceCallingOrSelfPermission( 2870 android.Manifest.permission.DEVICE_POWER, null); 2871 2872 final long ident = Binder.clearCallingIdentity(); 2873 try { 2874 goToSleepInternal(eventTime, reason, flags); 2875 } finally { 2876 Binder.restoreCallingIdentity(ident); 2877 } 2878 } 2879 2880 @Override // Binder call 2881 public void nap(long eventTime) { 2882 if (eventTime > SystemClock.uptimeMillis()) { 2883 throw new IllegalArgumentException("event time must not be in the future"); 2884 } 2885 2886 mContext.enforceCallingOrSelfPermission( 2887 android.Manifest.permission.DEVICE_POWER, null); 2888 2889 final long ident = Binder.clearCallingIdentity(); 2890 try { 2891 napInternal(eventTime); 2892 } finally { 2893 Binder.restoreCallingIdentity(ident); 2894 } 2895 } 2896 2897 @Override // Binder call 2898 public boolean isInteractive() { 2899 final long ident = Binder.clearCallingIdentity(); 2900 try { 2901 return isInteractiveInternal(); 2902 } finally { 2903 Binder.restoreCallingIdentity(ident); 2904 } 2905 } 2906 2907 @Override // Binder call 2908 public boolean isPowerSaveMode() { 2909 final long ident = Binder.clearCallingIdentity(); 2910 try { 2911 return isLowPowerModeInternal(); 2912 } finally { 2913 Binder.restoreCallingIdentity(ident); 2914 } 2915 } 2916 2917 /** 2918 * Reboots the device. 2919 * 2920 * @param confirm If true, shows a reboot confirmation dialog. 2921 * @param reason The reason for the reboot, or null if none. 2922 * @param wait If true, this call waits for the reboot to complete and does not return. 2923 */ 2924 @Override // Binder call 2925 public void reboot(boolean confirm, String reason, boolean wait) { 2926 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2927 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2928 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2929 } 2930 2931 final long ident = Binder.clearCallingIdentity(); 2932 try { 2933 shutdownOrRebootInternal(false, confirm, reason, wait); 2934 } finally { 2935 Binder.restoreCallingIdentity(ident); 2936 } 2937 } 2938 2939 /** 2940 * Shuts down the device. 2941 * 2942 * @param confirm If true, shows a shutdown confirmation dialog. 2943 * @param wait If true, this call waits for the shutdown to complete and does not return. 2944 */ 2945 @Override // Binder call 2946 public void shutdown(boolean confirm, boolean wait) { 2947 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2948 2949 final long ident = Binder.clearCallingIdentity(); 2950 try { 2951 shutdownOrRebootInternal(true, confirm, null, wait); 2952 } finally { 2953 Binder.restoreCallingIdentity(ident); 2954 } 2955 } 2956 2957 /** 2958 * Crash the runtime (causing a complete restart of the Android framework). 2959 * Requires REBOOT permission. Mostly for testing. Should not return. 2960 */ 2961 @Override // Binder call 2962 public void crash(String message) { 2963 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2964 2965 final long ident = Binder.clearCallingIdentity(); 2966 try { 2967 crashInternal(message); 2968 } finally { 2969 Binder.restoreCallingIdentity(ident); 2970 } 2971 } 2972 2973 /** 2974 * Set the setting that determines whether the device stays on when plugged in. 2975 * The argument is a bit string, with each bit specifying a power source that, 2976 * when the device is connected to that source, causes the device to stay on. 2977 * See {@link android.os.BatteryManager} for the list of power sources that 2978 * can be specified. Current values include 2979 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2980 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2981 * 2982 * Used by "adb shell svc power stayon ..." 2983 * 2984 * @param val an {@code int} containing the bits that specify which power sources 2985 * should cause the device to stay on. 2986 */ 2987 @Override // Binder call 2988 public void setStayOnSetting(int val) { 2989 mContext.enforceCallingOrSelfPermission( 2990 android.Manifest.permission.WRITE_SETTINGS, null); 2991 2992 final long ident = Binder.clearCallingIdentity(); 2993 try { 2994 setStayOnSettingInternal(val); 2995 } finally { 2996 Binder.restoreCallingIdentity(ident); 2997 } 2998 } 2999 3000 /** 3001 * Used by device administration to set the maximum screen off timeout. 3002 * 3003 * This method must only be called by the device administration policy manager. 3004 */ 3005 @Override // Binder call 3006 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 3007 final long ident = Binder.clearCallingIdentity(); 3008 try { 3009 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 3010 } finally { 3011 Binder.restoreCallingIdentity(ident); 3012 } 3013 } 3014 3015 /** 3016 * Used by the settings application and brightness control widgets to 3017 * temporarily override the current screen brightness setting so that the 3018 * user can observe the effect of an intended settings change without applying 3019 * it immediately. 3020 * 3021 * The override will be canceled when the setting value is next updated. 3022 * 3023 * @param brightness The overridden brightness. 3024 * 3025 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 3026 */ 3027 @Override // Binder call 3028 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 3029 mContext.enforceCallingOrSelfPermission( 3030 android.Manifest.permission.DEVICE_POWER, null); 3031 3032 final long ident = Binder.clearCallingIdentity(); 3033 try { 3034 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 3035 } finally { 3036 Binder.restoreCallingIdentity(ident); 3037 } 3038 } 3039 3040 /** 3041 * Used by the settings application and brightness control widgets to 3042 * temporarily override the current screen auto-brightness adjustment setting so that the 3043 * user can observe the effect of an intended settings change without applying 3044 * it immediately. 3045 * 3046 * The override will be canceled when the setting value is next updated. 3047 * 3048 * @param adj The overridden brightness, or Float.NaN to disable the override. 3049 * 3050 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 3051 */ 3052 @Override // Binder call 3053 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 3054 mContext.enforceCallingOrSelfPermission( 3055 android.Manifest.permission.DEVICE_POWER, null); 3056 3057 final long ident = Binder.clearCallingIdentity(); 3058 try { 3059 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 3060 } finally { 3061 Binder.restoreCallingIdentity(ident); 3062 } 3063 } 3064 3065 /** 3066 * Used by the phone application to make the attention LED flash when ringing. 3067 */ 3068 @Override // Binder call 3069 public void setAttentionLight(boolean on, int color) { 3070 mContext.enforceCallingOrSelfPermission( 3071 android.Manifest.permission.DEVICE_POWER, null); 3072 3073 final long ident = Binder.clearCallingIdentity(); 3074 try { 3075 setAttentionLightInternal(on, color); 3076 } finally { 3077 Binder.restoreCallingIdentity(ident); 3078 } 3079 } 3080 3081 @Override // Binder call 3082 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3083 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 3084 != PackageManager.PERMISSION_GRANTED) { 3085 pw.println("Permission Denial: can't dump PowerManager from from pid=" 3086 + Binder.getCallingPid() 3087 + ", uid=" + Binder.getCallingUid()); 3088 return; 3089 } 3090 3091 final long ident = Binder.clearCallingIdentity(); 3092 try { 3093 dumpInternal(pw); 3094 } finally { 3095 Binder.restoreCallingIdentity(ident); 3096 } 3097 } 3098 } 3099 3100 private final class LocalService extends PowerManagerInternal { 3101 @Override 3102 public void setScreenBrightnessOverrideFromWindowManager(int screenBrightness) { 3103 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3104 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3105 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3106 } 3107 setScreenBrightnessOverrideFromWindowManagerInternal(screenBrightness); 3108 } 3109 3110 @Override 3111 public void setButtonBrightnessOverrideFromWindowManager(int screenBrightness) { 3112 // Do nothing. 3113 // Button lights are not currently supported in the new implementation. 3114 } 3115 3116 @Override 3117 public void setDozeOverrideFromDreamManager(int screenState, int screenBrightness) { 3118 switch (screenState) { 3119 case Display.STATE_UNKNOWN: 3120 case Display.STATE_OFF: 3121 case Display.STATE_DOZE: 3122 case Display.STATE_DOZE_SUSPEND: 3123 case Display.STATE_ON: 3124 break; 3125 default: 3126 screenState = Display.STATE_UNKNOWN; 3127 break; 3128 } 3129 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3130 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3131 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3132 } 3133 setDozeOverrideFromDreamManagerInternal(screenState, screenBrightness); 3134 } 3135 3136 @Override 3137 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 3138 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 3139 } 3140 3141 @Override 3142 public boolean getLowPowerModeEnabled() { 3143 synchronized (mLock) { 3144 return mLowPowerModeEnabled; 3145 } 3146 } 3147 3148 @Override 3149 public void registerLowPowerModeObserver(LowPowerModeListener listener) { 3150 synchronized (mLock) { 3151 mLowPowerModeListeners.add(listener); 3152 } 3153 } 3154 } 3155} 3156