PowerManagerService.java revision 2175e9c366998ed7bd1a4501b94a02f4f49b932c
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.ServiceThread; 24import com.android.server.SystemService; 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.Trace; 59import android.os.UserHandle; 60import android.os.WorkSource; 61import android.provider.Settings; 62import android.service.dreams.DreamManagerInternal; 63import android.util.EventLog; 64import android.util.Log; 65import android.util.Slog; 66import android.util.TimeUtils; 67import android.view.Display; 68import android.view.WindowManagerPolicy; 69 70import java.io.FileDescriptor; 71import java.io.PrintWriter; 72import java.util.ArrayList; 73 74import libcore.util.Objects; 75 76/** 77 * The power manager service is responsible for coordinating power management 78 * functions on the device. 79 */ 80public final class PowerManagerService extends SystemService 81 implements Watchdog.Monitor { 82 private static final String TAG = "PowerManagerService"; 83 84 private static final boolean DEBUG = false; 85 private static final boolean DEBUG_SPEW = DEBUG && true; 86 87 // Message: Sent when a user activity timeout occurs to update the power state. 88 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 89 // Message: Sent when the device enters or exits a dreaming or dozing state. 90 private static final int MSG_SANDMAN = 2; 91 // Message: Sent when the screen on blocker is released. 92 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 93 94 // Dirty bit: mWakeLocks changed 95 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 96 // Dirty bit: mWakefulness changed 97 private static final int DIRTY_WAKEFULNESS = 1 << 1; 98 // Dirty bit: user activity was poked or may have timed out 99 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 100 // Dirty bit: actual display power state was updated asynchronously 101 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 102 // Dirty bit: mBootCompleted changed 103 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 104 // Dirty bit: settings changed 105 private static final int DIRTY_SETTINGS = 1 << 5; 106 // Dirty bit: mIsPowered changed 107 private static final int DIRTY_IS_POWERED = 1 << 6; 108 // Dirty bit: mStayOn changed 109 private static final int DIRTY_STAY_ON = 1 << 7; 110 // Dirty bit: battery state changed 111 private static final int DIRTY_BATTERY_STATE = 1 << 8; 112 // Dirty bit: proximity state changed 113 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 114 // Dirty bit: screen on blocker state became held or unheld 115 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 116 // Dirty bit: dock state changed 117 private static final int DIRTY_DOCK_STATE = 1 << 11; 118 119 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 120 // The screen should be off or in the process of being turned off by the display controller. 121 // The device typically passes through the dozing state first. 122 private static final int WAKEFULNESS_ASLEEP = 0; 123 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 124 // When the user activity timeout expires, the device may start dreaming or go to sleep. 125 private static final int WAKEFULNESS_AWAKE = 1; 126 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 127 // which ends the dream. The device goes to sleep when goToSleep() is called, when 128 // the dream ends or when unplugged. 129 // User activity may brighten the screen but does not end the dream. 130 private static final int WAKEFULNESS_DREAMING = 2; 131 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 132 // low-power "doze" dream to run which keeps the display on but lets the application 133 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 134 // The device fully goes to sleep if the dream cannot be started or ends on its own. 135 private static final int WAKEFULNESS_DOZING = 3; 136 137 // Summarizes the state of all active wakelocks. 138 private static final int WAKE_LOCK_CPU = 1 << 0; 139 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 140 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 141 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 142 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 143 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 144 private static final int WAKE_LOCK_DOZE = 1 << 6; 145 146 // Summarizes the user activity state. 147 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 148 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 149 150 // Default timeout in milliseconds. This is only used until the settings 151 // provider populates the actual default value (R.integer.def_screen_off_timeout). 152 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 153 154 // Power hints defined in hardware/libhardware/include/hardware/power.h. 155 private static final int POWER_HINT_INTERACTION = 2; 156 private static final int POWER_HINT_LOW_POWER = 5; 157 158 private final Context mContext; 159 private final ServiceThread mHandlerThread; 160 private final PowerManagerHandler mHandler; 161 162 private LightsManager mLightsManager; 163 private BatteryManagerInternal mBatteryManagerInternal; 164 private DisplayManagerInternal mDisplayManagerInternal; 165 private IBatteryStats mBatteryStats; 166 private IAppOpsService mAppOps; 167 private WindowManagerPolicy mPolicy; 168 private Notifier mNotifier; 169 private WirelessChargerDetector mWirelessChargerDetector; 170 private SettingsObserver mSettingsObserver; 171 private DreamManagerInternal mDreamManager; 172 private Light mAttentionLight; 173 174 private final Object mLock = new Object(); 175 176 // A bitfield that indicates what parts of the power state have 177 // changed and need to be recalculated. 178 private int mDirty; 179 180 // Indicates whether the device is awake or asleep or somewhere in between. 181 // This is distinct from the screen power state, which is managed separately. 182 private int mWakefulness; 183 184 // True if the sandman has just been summoned for the first time since entering the 185 // dreaming or dozing state. Indicates whether a new dream should begin. 186 private boolean mSandmanSummoned; 187 188 // True if MSG_SANDMAN has been scheduled. 189 private boolean mSandmanScheduled; 190 191 // Table of all suspend blockers. 192 // There should only be a few of these. 193 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 194 195 // Table of all wake locks acquired by applications. 196 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 197 198 // A bitfield that summarizes the state of all active wakelocks. 199 private int mWakeLockSummary; 200 201 // True if the device is in an interactive state. 202 private boolean mInteractive; 203 private boolean mInteractiveChanging; 204 205 // If true, instructs the display controller to wait for the proximity sensor to 206 // go negative before turning the screen on. 207 private boolean mRequestWaitForNegativeProximity; 208 209 // Timestamp of the last time the device was awoken or put to sleep. 210 private long mLastWakeTime; 211 private long mLastSleepTime; 212 213 // Timestamp of the last call to user activity. 214 private long mLastUserActivityTime; 215 private long mLastUserActivityTimeNoChangeLights; 216 217 // Timestamp of last interactive power hint. 218 private long mLastInteractivePowerHintTime; 219 220 // A bitfield that summarizes the effect of the user activity timer. 221 // A zero value indicates that the user activity timer has expired. 222 private int mUserActivitySummary; 223 224 // The desired display power state. The actual state may lag behind the 225 // requested because it is updated asynchronously by the display power controller. 226 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 227 228 // True if the display power state has been fully applied, which means the display 229 // is actually on or actually off or whatever was requested. 230 private boolean mDisplayReady; 231 232 // The suspend blocker used to keep the CPU alive when an application has acquired 233 // a wake lock. 234 private final SuspendBlocker mWakeLockSuspendBlocker; 235 236 // True if the wake lock suspend blocker has been acquired. 237 private boolean mHoldingWakeLockSuspendBlocker; 238 239 // The suspend blocker used to keep the CPU alive when the display is on, the 240 // display is getting ready or there is user activity (in which case the display 241 // must be on). 242 private final SuspendBlocker mDisplaySuspendBlocker; 243 244 // True if the display suspend blocker has been acquired. 245 private boolean mHoldingDisplaySuspendBlocker; 246 247 // The screen on blocker used to keep the screen from turning on while the lock 248 // screen is coming up. 249 private final ScreenOnBlockerImpl mScreenOnBlocker; 250 251 // True if systemReady() has been called. 252 private boolean mSystemReady; 253 254 // True if boot completed occurred. We keep the screen on until this happens. 255 private boolean mBootCompleted; 256 257 // True if auto-suspend mode is enabled. 258 // Refer to autosuspend.h. 259 private boolean mHalAutoSuspendModeEnabled; 260 261 // True if interactive mode is enabled. 262 // Refer to power.h. 263 private boolean mHalInteractiveModeEnabled; 264 265 // True if the device is plugged into a power source. 266 private boolean mIsPowered; 267 268 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 269 private int mPlugType; 270 271 // The current battery level percentage. 272 private int mBatteryLevel; 273 274 // The battery level percentage at the time the dream started. 275 // This is used to terminate a dream and go to sleep if the battery is 276 // draining faster than it is charging and the user activity timeout has expired. 277 private int mBatteryLevelWhenDreamStarted; 278 279 // The current dock state. 280 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 281 282 // True to decouple auto-suspend mode from the display state. 283 private boolean mDecoupleHalAutoSuspendModeFromDisplayConfig; 284 285 // True to decouple interactive mode from the display state. 286 private boolean mDecoupleHalInteractiveModeFromDisplayConfig; 287 288 // True if the device should wake up when plugged or unplugged. 289 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 290 291 // True if the device should suspend when the screen is off due to proximity. 292 private boolean mSuspendWhenScreenOffDueToProximityConfig; 293 294 // True if dreams are supported on this device. 295 private boolean mDreamsSupportedConfig; 296 297 // Default value for dreams enabled 298 private boolean mDreamsEnabledByDefaultConfig; 299 300 // Default value for dreams activate-on-sleep 301 private boolean mDreamsActivatedOnSleepByDefaultConfig; 302 303 // Default value for dreams activate-on-dock 304 private boolean mDreamsActivatedOnDockByDefaultConfig; 305 306 // True if dreams can run while not plugged in. 307 private boolean mDreamsEnabledOnBatteryConfig; 308 309 // Minimum battery level to allow dreaming when powered. 310 // Use -1 to disable this safety feature. 311 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 312 313 // Minimum battery level to allow dreaming when not powered. 314 // Use -1 to disable this safety feature. 315 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 316 317 // If the battery level drops by this percentage and the user activity timeout 318 // has expired, then assume the device is receiving insufficient current to charge 319 // effectively and terminate the dream. Use -1 to disable this safety feature. 320 private int mDreamsBatteryLevelDrainCutoffConfig; 321 322 // True if dreams are enabled by the user. 323 private boolean mDreamsEnabledSetting; 324 325 // True if dreams should be activated on sleep. 326 private boolean mDreamsActivateOnSleepSetting; 327 328 // True if dreams should be activated on dock. 329 private boolean mDreamsActivateOnDockSetting; 330 331 // True if doze should not be started until after the screen off transition. 332 private boolean mDozeAfterScreenOffConfig; 333 334 // The minimum screen off timeout, in milliseconds. 335 private int mMinimumScreenOffTimeoutConfig; 336 337 // The screen dim duration, in milliseconds. 338 // This is subtracted from the end of the screen off timeout so the 339 // minimum screen off timeout should be longer than this. 340 private int mMaximumScreenDimDurationConfig; 341 342 // The maximum screen dim time expressed as a ratio relative to the screen 343 // off timeout. If the screen off timeout is very short then we want the 344 // dim timeout to also be quite short so that most of the time is spent on. 345 // Otherwise the user won't get much screen on time before dimming occurs. 346 private float mMaximumScreenDimRatioConfig; 347 348 // The screen off timeout setting value in milliseconds. 349 private int mScreenOffTimeoutSetting; 350 351 // The maximum allowable screen off timeout according to the device 352 // administration policy. Overrides other settings. 353 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 354 355 // The stay on while plugged in setting. 356 // A bitfield of battery conditions under which to make the screen stay on. 357 private int mStayOnWhilePluggedInSetting; 358 359 // True if the device should stay on. 360 private boolean mStayOn; 361 362 // True if the proximity sensor reads a positive result. 363 private boolean mProximityPositive; 364 365 // Screen brightness setting limits. 366 private int mScreenBrightnessSettingMinimum; 367 private int mScreenBrightnessSettingMaximum; 368 private int mScreenBrightnessSettingDefault; 369 370 // The screen brightness setting, from 0 to 255. 371 // Use -1 if no value has been set. 372 private int mScreenBrightnessSetting; 373 374 // The screen auto-brightness adjustment setting, from -1 to 1. 375 // Use 0 if there is no adjustment. 376 private float mScreenAutoBrightnessAdjustmentSetting; 377 378 // The screen brightness mode. 379 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 380 private int mScreenBrightnessModeSetting; 381 382 // The screen brightness setting override from the window manager 383 // to allow the current foreground activity to override the brightness. 384 // Use -1 to disable. 385 private int mScreenBrightnessOverrideFromWindowManager = -1; 386 387 // The user activity timeout override from the window manager 388 // to allow the current foreground activity to override the user activity timeout. 389 // Use -1 to disable. 390 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 391 392 // The screen brightness setting override from the settings application 393 // to temporarily adjust the brightness until next updated, 394 // Use -1 to disable. 395 private int mTemporaryScreenBrightnessSettingOverride = -1; 396 397 // The screen brightness adjustment setting override from the settings 398 // application to temporarily adjust the auto-brightness adjustment factor 399 // until next updated, in the range -1..1. 400 // Use NaN to disable. 401 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 402 403 // The screen state to use while dozing. 404 private int mDozeScreenStateOverrideFromDreamManager = Display.STATE_UNKNOWN; 405 406 // The screen brightness to use while dozing. 407 private int mDozeScreenBrightnessOverrideFromDreamManager = PowerManager.BRIGHTNESS_DEFAULT; 408 409 // Time when we last logged a warning about calling userActivity() without permission. 410 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 411 412 // If true, the device is in low power mode. 413 private boolean mLowPowerModeEnabled; 414 415 // Current state of the low power mode setting. 416 private boolean mLowPowerModeSetting; 417 418 // Current state of whether the settings are allowing auto low power mode. 419 private boolean mAutoLowPowerModeEnabled; 420 421 // The user turned off low power mode below the trigger level 422 private boolean mAutoLowPowerModeSnoozing; 423 424 // True if the battery level is currently considered low. 425 private boolean mBatteryLevelLow; 426 427 private final ArrayList<PowerManagerInternal.LowPowerModeListener> mLowPowerModeListeners 428 = new ArrayList<PowerManagerInternal.LowPowerModeListener>(); 429 430 private native void nativeInit(); 431 432 private static native void nativeAcquireSuspendBlocker(String name); 433 private static native void nativeReleaseSuspendBlocker(String name); 434 private static native void nativeSetInteractive(boolean enable); 435 private static native void nativeSetAutoSuspend(boolean enable); 436 private static native void nativeSendPowerHint(int hintId, int data); 437 438 public PowerManagerService(Context context) { 439 super(context); 440 mContext = context; 441 mHandlerThread = new ServiceThread(TAG, 442 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 443 mHandlerThread.start(); 444 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 445 446 synchronized (mLock) { 447 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 448 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 449 mDisplaySuspendBlocker.acquire(); 450 mHoldingDisplaySuspendBlocker = true; 451 mHalAutoSuspendModeEnabled = false; 452 mHalInteractiveModeEnabled = true; 453 454 mScreenOnBlocker = new ScreenOnBlockerImpl(); 455 mWakefulness = WAKEFULNESS_AWAKE; 456 mInteractive = true; 457 458 nativeInit(); 459 nativeSetAutoSuspend(false); 460 nativeSetInteractive(true); 461 } 462 } 463 464 @Override 465 public void onStart() { 466 publishBinderService(Context.POWER_SERVICE, new BinderService()); 467 publishLocalService(PowerManagerInternal.class, new LocalService()); 468 469 Watchdog.getInstance().addMonitor(this); 470 Watchdog.getInstance().addThread(mHandler); 471 } 472 473 @Override 474 public void onBootPhase(int phase) { 475 synchronized (mLock) { 476 if (phase == PHASE_BOOT_COMPLETED) { 477 final long now = SystemClock.uptimeMillis(); 478 mBootCompleted = true; 479 mDirty |= DIRTY_BOOT_COMPLETED; 480 userActivityNoUpdateLocked( 481 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 482 updatePowerStateLocked(); 483 } 484 } 485 } 486 487 public void systemReady(IAppOpsService appOps) { 488 synchronized (mLock) { 489 mSystemReady = true; 490 mAppOps = appOps; 491 mDreamManager = getLocalService(DreamManagerInternal.class); 492 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 493 mPolicy = getLocalService(WindowManagerPolicy.class); 494 mBatteryManagerInternal = getLocalService(BatteryManagerInternal.class); 495 496 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 497 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 498 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 499 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 500 501 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 502 503 // The notifier runs on the system server's main looper so as not to interfere 504 // with the animations and other critical functions of the power manager. 505 mBatteryStats = BatteryStatsService.getService(); 506 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 507 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 508 mScreenOnBlocker, mPolicy); 509 510 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 511 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 512 mHandler); 513 mSettingsObserver = new SettingsObserver(mHandler); 514 515 mLightsManager = getLocalService(LightsManager.class); 516 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 517 518 // Initialize display power management. 519 mDisplayManagerInternal.initPowerManagement( 520 mDisplayPowerCallbacks, mHandler, sensorManager); 521 522 // Register for broadcasts from other components of the system. 523 IntentFilter filter = new IntentFilter(); 524 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 525 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 526 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 527 528 filter = new IntentFilter(); 529 filter.addAction(Intent.ACTION_DREAMING_STARTED); 530 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 531 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 532 533 filter = new IntentFilter(); 534 filter.addAction(Intent.ACTION_USER_SWITCHED); 535 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 536 537 filter = new IntentFilter(); 538 filter.addAction(Intent.ACTION_DOCK_EVENT); 539 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 540 541 // Register for settings changes. 542 final ContentResolver resolver = mContext.getContentResolver(); 543 resolver.registerContentObserver(Settings.Secure.getUriFor( 544 Settings.Secure.SCREENSAVER_ENABLED), 545 false, mSettingsObserver, UserHandle.USER_ALL); 546 resolver.registerContentObserver(Settings.Secure.getUriFor( 547 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 548 false, mSettingsObserver, UserHandle.USER_ALL); 549 resolver.registerContentObserver(Settings.Secure.getUriFor( 550 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 551 false, mSettingsObserver, UserHandle.USER_ALL); 552 resolver.registerContentObserver(Settings.System.getUriFor( 553 Settings.System.SCREEN_OFF_TIMEOUT), 554 false, mSettingsObserver, UserHandle.USER_ALL); 555 resolver.registerContentObserver(Settings.Global.getUriFor( 556 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 557 false, mSettingsObserver, UserHandle.USER_ALL); 558 resolver.registerContentObserver(Settings.System.getUriFor( 559 Settings.System.SCREEN_BRIGHTNESS), 560 false, mSettingsObserver, UserHandle.USER_ALL); 561 resolver.registerContentObserver(Settings.System.getUriFor( 562 Settings.System.SCREEN_BRIGHTNESS_MODE), 563 false, mSettingsObserver, UserHandle.USER_ALL); 564 resolver.registerContentObserver(Settings.System.getUriFor( 565 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ), 566 false, mSettingsObserver, UserHandle.USER_ALL); 567 resolver.registerContentObserver(Settings.Global.getUriFor( 568 Settings.Global.LOW_POWER_MODE), 569 false, mSettingsObserver, UserHandle.USER_ALL); 570 resolver.registerContentObserver(Settings.Global.getUriFor( 571 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL), 572 false, mSettingsObserver, UserHandle.USER_ALL); 573 // Go. 574 readConfigurationLocked(); 575 updateSettingsLocked(); 576 mDirty |= DIRTY_BATTERY_STATE; 577 updatePowerStateLocked(); 578 } 579 } 580 581 private void readConfigurationLocked() { 582 final Resources resources = mContext.getResources(); 583 584 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 585 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 586 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 587 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 588 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 589 com.android.internal.R.bool.config_unplugTurnsOnScreen); 590 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 591 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 592 mDreamsSupportedConfig = resources.getBoolean( 593 com.android.internal.R.bool.config_dreamsSupported); 594 mDreamsEnabledByDefaultConfig = resources.getBoolean( 595 com.android.internal.R.bool.config_dreamsEnabledByDefault); 596 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 597 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 598 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 599 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 600 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 601 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 602 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 603 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 604 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 605 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 606 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 607 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 608 mDozeAfterScreenOffConfig = resources.getBoolean( 609 com.android.internal.R.bool.config_dozeAfterScreenOff); 610 mMinimumScreenOffTimeoutConfig = resources.getInteger( 611 com.android.internal.R.integer.config_minimumScreenOffTimeout); 612 mMaximumScreenDimDurationConfig = resources.getInteger( 613 com.android.internal.R.integer.config_maximumScreenDimDuration); 614 mMaximumScreenDimRatioConfig = resources.getFraction( 615 com.android.internal.R.fraction.config_maximumScreenDimRatio, 1, 1); 616 } 617 618 private void updateSettingsLocked() { 619 final ContentResolver resolver = mContext.getContentResolver(); 620 621 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 622 Settings.Secure.SCREENSAVER_ENABLED, 623 mDreamsEnabledByDefaultConfig ? 1 : 0, 624 UserHandle.USER_CURRENT) != 0); 625 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 626 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 627 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 628 UserHandle.USER_CURRENT) != 0); 629 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 630 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 631 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 632 UserHandle.USER_CURRENT) != 0); 633 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 634 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 635 UserHandle.USER_CURRENT); 636 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 637 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 638 639 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 640 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 641 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 642 UserHandle.USER_CURRENT); 643 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 644 mTemporaryScreenBrightnessSettingOverride = -1; 645 } 646 647 final float oldScreenAutoBrightnessAdjustmentSetting = 648 mScreenAutoBrightnessAdjustmentSetting; 649 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 650 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 651 UserHandle.USER_CURRENT); 652 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 653 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 654 } 655 656 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 657 Settings.System.SCREEN_BRIGHTNESS_MODE, 658 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 659 660 final boolean lowPowerModeEnabled = Settings.Global.getInt(resolver, 661 Settings.Global.LOW_POWER_MODE, 0) != 0; 662 final boolean autoLowPowerModeEnabled = Settings.Global.getInt(resolver, 663 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL, 0) != 0; 664 if (lowPowerModeEnabled != mLowPowerModeSetting 665 || autoLowPowerModeEnabled != mAutoLowPowerModeEnabled) { 666 if (lowPowerModeEnabled != mLowPowerModeSetting) { 667 if (!mAutoLowPowerModeSnoozing && !lowPowerModeEnabled && !mIsPowered 668 && mAutoLowPowerModeEnabled) { 669 if (DEBUG_SPEW) { 670 Slog.d(TAG, "updateSettingsLocked: snoozing low power mode"); 671 } 672 mAutoLowPowerModeSnoozing = true; 673 } else if (mAutoLowPowerModeSnoozing && lowPowerModeEnabled) { 674 if (DEBUG_SPEW) { 675 Slog.d(TAG, "updateSettingsLocked: no longer snoozing low power mode"); 676 } 677 mAutoLowPowerModeSnoozing = true; 678 } 679 } 680 mLowPowerModeSetting = lowPowerModeEnabled; 681 mAutoLowPowerModeEnabled = autoLowPowerModeEnabled; 682 updateLowPowerModeLocked(); 683 } 684 685 mDirty |= DIRTY_SETTINGS; 686 } 687 688 void updateLowPowerModeLocked() { 689 if (mIsPowered && mLowPowerModeSetting) { 690 if (DEBUG_SPEW) { 691 Slog.d(TAG, "updateLowPowerModeLocked: powered, turning setting off"); 692 } 693 // Turn setting off if powered 694 Settings.Global.putInt(mContext.getContentResolver(), 695 Settings.Global.LOW_POWER_MODE, 0); 696 mLowPowerModeSetting = false; 697 } else if (!mIsPowered && mAutoLowPowerModeEnabled && !mAutoLowPowerModeSnoozing 698 && mBatteryLevelLow && !mLowPowerModeSetting) { 699 if (DEBUG_SPEW) { 700 Slog.d(TAG, "updateLowPowerModeLocked: trigger level reached, turning setting on"); 701 } 702 // Turn setting on if trigger level is enabled, and we're now below it 703 Settings.Global.putInt(mContext.getContentResolver(), 704 Settings.Global.LOW_POWER_MODE, 1); 705 mLowPowerModeSetting = true; 706 } 707 final boolean lowPowerModeEnabled = mLowPowerModeSetting; 708 if (mLowPowerModeEnabled != lowPowerModeEnabled) { 709 mLowPowerModeEnabled = lowPowerModeEnabled; 710 powerHintInternal(POWER_HINT_LOW_POWER, lowPowerModeEnabled ? 1 : 0); 711 mLowPowerModeEnabled = lowPowerModeEnabled; 712 BackgroundThread.getHandler().post(new Runnable() { 713 @Override 714 public void run() { 715 Intent intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGING) 716 .putExtra(PowerManager.EXTRA_POWER_SAVE_MODE, mLowPowerModeEnabled) 717 .addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 718 mContext.sendBroadcast(intent); 719 ArrayList<PowerManagerInternal.LowPowerModeListener> listeners; 720 synchronized (mLock) { 721 listeners = new ArrayList<PowerManagerInternal.LowPowerModeListener>( 722 mLowPowerModeListeners); 723 } 724 for (int i=0; i<listeners.size(); i++) { 725 listeners.get(i).onLowPowerModeChanged(lowPowerModeEnabled); 726 } 727 intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED); 728 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 729 mContext.sendBroadcast(intent); 730 } 731 }); 732 } 733 } 734 735 private void handleSettingsChangedLocked() { 736 updateSettingsLocked(); 737 updatePowerStateLocked(); 738 } 739 740 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 741 WorkSource ws, String historyTag, int uid, int pid) { 742 synchronized (mLock) { 743 if (DEBUG_SPEW) { 744 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 745 + ", flags=0x" + Integer.toHexString(flags) 746 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 747 } 748 749 WakeLock wakeLock; 750 int index = findWakeLockIndexLocked(lock); 751 boolean notifyAcquire; 752 if (index >= 0) { 753 wakeLock = mWakeLocks.get(index); 754 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 755 // Update existing wake lock. This shouldn't happen but is harmless. 756 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 757 uid, pid, ws, historyTag); 758 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 759 } 760 notifyAcquire = false; 761 } else { 762 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 763 try { 764 lock.linkToDeath(wakeLock, 0); 765 } catch (RemoteException ex) { 766 throw new IllegalArgumentException("Wake lock is already dead."); 767 } 768 mWakeLocks.add(wakeLock); 769 notifyAcquire = true; 770 } 771 772 applyWakeLockFlagsOnAcquireLocked(wakeLock, uid); 773 mDirty |= DIRTY_WAKE_LOCKS; 774 updatePowerStateLocked(); 775 if (notifyAcquire) { 776 // This needs to be done last so we are sure we have acquired the 777 // kernel wake lock. Otherwise we have a race where the system may 778 // go to sleep between the time we start the accounting in battery 779 // stats and when we actually get around to telling the kernel to 780 // stay awake. 781 notifyWakeLockAcquiredLocked(wakeLock); 782 } 783 } 784 } 785 786 @SuppressWarnings("deprecation") 787 private static boolean isScreenLock(final WakeLock wakeLock) { 788 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 789 case PowerManager.FULL_WAKE_LOCK: 790 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 791 case PowerManager.SCREEN_DIM_WAKE_LOCK: 792 return true; 793 } 794 return false; 795 } 796 797 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock, int uid) { 798 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 799 && isScreenLock(wakeLock)) { 800 wakeUpNoUpdateLocked(SystemClock.uptimeMillis(), uid); 801 } 802 } 803 804 private void releaseWakeLockInternal(IBinder lock, int flags) { 805 synchronized (mLock) { 806 int index = findWakeLockIndexLocked(lock); 807 if (index < 0) { 808 if (DEBUG_SPEW) { 809 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 810 + " [not found], flags=0x" + Integer.toHexString(flags)); 811 } 812 return; 813 } 814 815 WakeLock wakeLock = mWakeLocks.get(index); 816 if (DEBUG_SPEW) { 817 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 818 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 819 } 820 821 if ((flags & PowerManager.RELEASE_FLAG_WAIT_FOR_NO_PROXIMITY) != 0) { 822 mRequestWaitForNegativeProximity = true; 823 } 824 825 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 826 removeWakeLockLocked(wakeLock, index); 827 } 828 } 829 830 private void handleWakeLockDeath(WakeLock wakeLock) { 831 synchronized (mLock) { 832 if (DEBUG_SPEW) { 833 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 834 + " [" + wakeLock.mTag + "]"); 835 } 836 837 int index = mWakeLocks.indexOf(wakeLock); 838 if (index < 0) { 839 return; 840 } 841 842 removeWakeLockLocked(wakeLock, index); 843 } 844 } 845 846 private void removeWakeLockLocked(WakeLock wakeLock, int index) { 847 mWakeLocks.remove(index); 848 notifyWakeLockReleasedLocked(wakeLock); 849 850 applyWakeLockFlagsOnReleaseLocked(wakeLock); 851 mDirty |= DIRTY_WAKE_LOCKS; 852 updatePowerStateLocked(); 853 } 854 855 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 856 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 857 && isScreenLock(wakeLock)) { 858 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 859 PowerManager.USER_ACTIVITY_EVENT_OTHER, 860 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 861 wakeLock.mOwnerUid); 862 } 863 } 864 865 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag, 866 int callingUid) { 867 synchronized (mLock) { 868 int index = findWakeLockIndexLocked(lock); 869 if (index < 0) { 870 if (DEBUG_SPEW) { 871 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 872 + " [not found], ws=" + ws); 873 } 874 throw new IllegalArgumentException("Wake lock not active: " + lock 875 + " from uid " + callingUid); 876 } 877 878 WakeLock wakeLock = mWakeLocks.get(index); 879 if (DEBUG_SPEW) { 880 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 881 + " [" + wakeLock.mTag + "], ws=" + ws); 882 } 883 884 if (!wakeLock.hasSameWorkSource(ws)) { 885 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 886 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 887 ws, historyTag); 888 wakeLock.mHistoryTag = historyTag; 889 wakeLock.updateWorkSource(ws); 890 } 891 } 892 } 893 894 private int findWakeLockIndexLocked(IBinder lock) { 895 final int count = mWakeLocks.size(); 896 for (int i = 0; i < count; i++) { 897 if (mWakeLocks.get(i).mLock == lock) { 898 return i; 899 } 900 } 901 return -1; 902 } 903 904 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 905 if (mSystemReady) { 906 wakeLock.mNotifiedAcquired = true; 907 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 908 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 909 wakeLock.mHistoryTag); 910 } 911 } 912 913 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 914 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 915 if (mSystemReady && wakeLock.mNotifiedAcquired) { 916 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 917 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 918 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 919 } 920 } 921 922 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 923 if (mSystemReady && wakeLock.mNotifiedAcquired) { 924 wakeLock.mNotifiedAcquired = false; 925 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, 926 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 927 wakeLock.mWorkSource, wakeLock.mHistoryTag); 928 } 929 } 930 931 @SuppressWarnings("deprecation") 932 private boolean isWakeLockLevelSupportedInternal(int level) { 933 synchronized (mLock) { 934 switch (level) { 935 case PowerManager.PARTIAL_WAKE_LOCK: 936 case PowerManager.SCREEN_DIM_WAKE_LOCK: 937 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 938 case PowerManager.FULL_WAKE_LOCK: 939 case PowerManager.DOZE_WAKE_LOCK: 940 return true; 941 942 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 943 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 944 945 default: 946 return false; 947 } 948 } 949 } 950 951 // Called from native code. 952 private void userActivityFromNative(long eventTime, int event, int flags) { 953 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 954 } 955 956 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 957 synchronized (mLock) { 958 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 959 updatePowerStateLocked(); 960 } 961 } 962 } 963 964 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 965 if (DEBUG_SPEW) { 966 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 967 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 968 + ", uid=" + uid); 969 } 970 971 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 972 || !mBootCompleted || !mSystemReady) { 973 return false; 974 } 975 976 Trace.traceBegin(Trace.TRACE_TAG_POWER, "userActivity"); 977 try { 978 if (eventTime > mLastInteractivePowerHintTime) { 979 powerHintInternal(POWER_HINT_INTERACTION, 0); 980 mLastInteractivePowerHintTime = eventTime; 981 } 982 983 mNotifier.onUserActivity(event, uid); 984 985 if (mWakefulness == WAKEFULNESS_ASLEEP 986 || mWakefulness == WAKEFULNESS_DOZING 987 || (flags & PowerManager.USER_ACTIVITY_FLAG_INDIRECT) != 0) { 988 return false; 989 } 990 991 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 992 if (eventTime > mLastUserActivityTimeNoChangeLights 993 && eventTime > mLastUserActivityTime) { 994 mLastUserActivityTimeNoChangeLights = eventTime; 995 mDirty |= DIRTY_USER_ACTIVITY; 996 return true; 997 } 998 } else { 999 if (eventTime > mLastUserActivityTime) { 1000 mLastUserActivityTime = eventTime; 1001 mDirty |= DIRTY_USER_ACTIVITY; 1002 return true; 1003 } 1004 } 1005 } finally { 1006 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1007 } 1008 return false; 1009 } 1010 1011 private void wakeUpInternal(long eventTime, int uid) { 1012 synchronized (mLock) { 1013 if (wakeUpNoUpdateLocked(eventTime, uid)) { 1014 updatePowerStateLocked(); 1015 } 1016 } 1017 } 1018 1019 private boolean wakeUpNoUpdateLocked(long eventTime, int uid) { 1020 if (DEBUG_SPEW) { 1021 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime + ", uid=" + uid); 1022 } 1023 1024 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 1025 || !mBootCompleted || !mSystemReady) { 1026 return false; 1027 } 1028 1029 Trace.traceBegin(Trace.TRACE_TAG_POWER, "wakeUp"); 1030 try { 1031 switch (mWakefulness) { 1032 case WAKEFULNESS_ASLEEP: 1033 Slog.i(TAG, "Waking up from sleep (uid " + uid +")..."); 1034 break; 1035 case WAKEFULNESS_DREAMING: 1036 Slog.i(TAG, "Waking up from dream (uid " + uid +")..."); 1037 break; 1038 case WAKEFULNESS_DOZING: 1039 Slog.i(TAG, "Waking up from dozing (uid " + uid +")..."); 1040 break; 1041 } 1042 1043 mLastWakeTime = eventTime; 1044 mDirty |= DIRTY_WAKEFULNESS; 1045 mWakefulness = WAKEFULNESS_AWAKE; 1046 setInteractiveStateLocked(true, 0); 1047 1048 userActivityNoUpdateLocked( 1049 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, uid); 1050 } finally { 1051 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1052 } 1053 return true; 1054 } 1055 1056 private void goToSleepInternal(long eventTime, int reason, int flags, int uid) { 1057 synchronized (mLock) { 1058 if (goToSleepNoUpdateLocked(eventTime, reason, flags, uid)) { 1059 updatePowerStateLocked(); 1060 } 1061 } 1062 } 1063 1064 // This method is called goToSleep for historical reasons but we actually start 1065 // dozing before really going to sleep. 1066 @SuppressWarnings("deprecation") 1067 private boolean goToSleepNoUpdateLocked(long eventTime, int reason, int flags, int uid) { 1068 if (DEBUG_SPEW) { 1069 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime 1070 + ", reason=" + reason + ", flags=" + flags + ", uid=" + uid); 1071 } 1072 1073 if (eventTime < mLastWakeTime 1074 || mWakefulness == WAKEFULNESS_ASLEEP 1075 || mWakefulness == WAKEFULNESS_DOZING 1076 || !mBootCompleted || !mSystemReady) { 1077 return false; 1078 } 1079 1080 Trace.traceBegin(Trace.TRACE_TAG_POWER, "goToSleep"); 1081 try { 1082 switch (reason) { 1083 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 1084 Slog.i(TAG, "Going to sleep due to device administration policy " 1085 + "(uid " + uid +")..."); 1086 break; 1087 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 1088 Slog.i(TAG, "Going to sleep due to screen timeout (uid " + uid +")..."); 1089 break; 1090 case PowerManager.GO_TO_SLEEP_REASON_LID_SWITCH: 1091 Slog.i(TAG, "Going to sleep due to lid switch (uid " + uid +")..."); 1092 break; 1093 case PowerManager.GO_TO_SLEEP_REASON_POWER_BUTTON: 1094 Slog.i(TAG, "Going to sleep due to power button (uid " + uid +")..."); 1095 break; 1096 case PowerManager.GO_TO_SLEEP_REASON_HDMI: 1097 Slog.i(TAG, "Going to sleep due to HDMI standby (uid " + uid +")..."); 1098 break; 1099 default: 1100 Slog.i(TAG, "Going to sleep by application request (uid " + uid +")..."); 1101 reason = PowerManager.GO_TO_SLEEP_REASON_APPLICATION; 1102 break; 1103 } 1104 1105 mLastSleepTime = eventTime; 1106 mDirty |= DIRTY_WAKEFULNESS; 1107 mWakefulness = WAKEFULNESS_DOZING; 1108 mSandmanSummoned = true; 1109 setInteractiveStateLocked(false, reason); 1110 1111 // Report the number of wake locks that will be cleared by going to sleep. 1112 int numWakeLocksCleared = 0; 1113 final int numWakeLocks = mWakeLocks.size(); 1114 for (int i = 0; i < numWakeLocks; i++) { 1115 final WakeLock wakeLock = mWakeLocks.get(i); 1116 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1117 case PowerManager.FULL_WAKE_LOCK: 1118 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1119 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1120 numWakeLocksCleared += 1; 1121 break; 1122 } 1123 } 1124 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 1125 1126 // Skip dozing if requested. 1127 if ((flags & PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE) != 0) { 1128 reallyGoToSleepNoUpdateLocked(eventTime, uid); 1129 } 1130 } finally { 1131 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1132 } 1133 return true; 1134 } 1135 1136 private void napInternal(long eventTime, int uid) { 1137 synchronized (mLock) { 1138 if (napNoUpdateLocked(eventTime, uid)) { 1139 updatePowerStateLocked(); 1140 } 1141 } 1142 } 1143 1144 private boolean napNoUpdateLocked(long eventTime, int uid) { 1145 if (DEBUG_SPEW) { 1146 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime + ", uid=" + uid); 1147 } 1148 1149 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1150 || !mBootCompleted || !mSystemReady) { 1151 return false; 1152 } 1153 1154 Trace.traceBegin(Trace.TRACE_TAG_POWER, "nap"); 1155 try { 1156 Slog.i(TAG, "Nap time (uid " + uid +")..."); 1157 1158 mDirty |= DIRTY_WAKEFULNESS; 1159 mWakefulness = WAKEFULNESS_DREAMING; 1160 mSandmanSummoned = true; 1161 setInteractiveStateLocked(true, 0); 1162 } finally { 1163 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1164 } 1165 return true; 1166 } 1167 1168 // Done dozing, drop everything and go to sleep. 1169 private boolean reallyGoToSleepNoUpdateLocked(long eventTime, int uid) { 1170 if (DEBUG_SPEW) { 1171 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime 1172 + ", uid=" + uid); 1173 } 1174 1175 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1176 || !mBootCompleted || !mSystemReady) { 1177 return false; 1178 } 1179 1180 Trace.traceBegin(Trace.TRACE_TAG_POWER, "reallyGoToSleep"); 1181 try { 1182 Slog.i(TAG, "Sleeping (uid " + uid +")..."); 1183 1184 mDirty |= DIRTY_WAKEFULNESS; 1185 mWakefulness = WAKEFULNESS_ASLEEP; 1186 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1187 } finally { 1188 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1189 } 1190 return true; 1191 } 1192 1193 private void setInteractiveStateLocked(boolean interactive, int reason) { 1194 if (mInteractive != interactive) { 1195 finishInteractiveStateChangeLocked(); 1196 1197 mInteractive = interactive; 1198 mInteractiveChanging = true; 1199 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1200 } 1201 } 1202 1203 private void finishInteractiveStateChangeLocked() { 1204 if (mInteractiveChanging) { 1205 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1206 mInteractiveChanging = false; 1207 } 1208 } 1209 1210 /** 1211 * Updates the global power state based on dirty bits recorded in mDirty. 1212 * 1213 * This is the main function that performs power state transitions. 1214 * We centralize them here so that we can recompute the power state completely 1215 * each time something important changes, and ensure that we do it the same 1216 * way each time. The point is to gather all of the transition logic here. 1217 */ 1218 private void updatePowerStateLocked() { 1219 if (!mSystemReady || mDirty == 0) { 1220 return; 1221 } 1222 if (!Thread.holdsLock(mLock)) { 1223 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1224 } 1225 1226 Trace.traceBegin(Trace.TRACE_TAG_POWER, "updatePowerState"); 1227 try { 1228 // Phase 0: Basic state updates. 1229 updateIsPoweredLocked(mDirty); 1230 updateStayOnLocked(mDirty); 1231 1232 // Phase 1: Update wakefulness. 1233 // Loop because the wake lock and user activity computations are influenced 1234 // by changes in wakefulness. 1235 final long now = SystemClock.uptimeMillis(); 1236 int dirtyPhase2 = 0; 1237 for (;;) { 1238 int dirtyPhase1 = mDirty; 1239 dirtyPhase2 |= dirtyPhase1; 1240 mDirty = 0; 1241 1242 updateWakeLockSummaryLocked(dirtyPhase1); 1243 updateUserActivitySummaryLocked(now, dirtyPhase1); 1244 if (!updateWakefulnessLocked(dirtyPhase1)) { 1245 break; 1246 } 1247 } 1248 1249 // Phase 2: Update display power state. 1250 boolean displayBecameReady = updateDisplayPowerStateLocked(dirtyPhase2); 1251 1252 // Phase 3: Update dream state (depends on display ready signal). 1253 updateDreamLocked(dirtyPhase2, displayBecameReady); 1254 1255 // Phase 4: Send notifications, if needed. 1256 if (mDisplayReady) { 1257 finishInteractiveStateChangeLocked(); 1258 } 1259 1260 // Phase 5: Update suspend blocker. 1261 // Because we might release the last suspend blocker here, we need to make sure 1262 // we finished everything else first! 1263 updateSuspendBlockerLocked(); 1264 } finally { 1265 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1266 } 1267 } 1268 1269 /** 1270 * Updates the value of mIsPowered. 1271 * Sets DIRTY_IS_POWERED if a change occurred. 1272 */ 1273 private void updateIsPoweredLocked(int dirty) { 1274 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1275 final boolean wasPowered = mIsPowered; 1276 final int oldPlugType = mPlugType; 1277 final boolean oldLevelLow = mBatteryLevelLow; 1278 mIsPowered = mBatteryManagerInternal.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1279 mPlugType = mBatteryManagerInternal.getPlugType(); 1280 mBatteryLevel = mBatteryManagerInternal.getBatteryLevel(); 1281 mBatteryLevelLow = mBatteryManagerInternal.getBatteryLevelLow(); 1282 1283 if (DEBUG_SPEW) { 1284 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1285 + ", mIsPowered=" + mIsPowered 1286 + ", oldPlugType=" + oldPlugType 1287 + ", mPlugType=" + mPlugType 1288 + ", mBatteryLevel=" + mBatteryLevel); 1289 } 1290 1291 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1292 mDirty |= DIRTY_IS_POWERED; 1293 1294 // Update wireless dock detection state. 1295 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1296 mIsPowered, mPlugType, mBatteryLevel); 1297 1298 // Treat plugging and unplugging the devices as a user activity. 1299 // Users find it disconcerting when they plug or unplug the device 1300 // and it shuts off right away. 1301 // Some devices also wake the device when plugged or unplugged because 1302 // they don't have a charging LED. 1303 final long now = SystemClock.uptimeMillis(); 1304 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1305 dockedOnWirelessCharger)) { 1306 wakeUpNoUpdateLocked(now, Process.SYSTEM_UID); 1307 } 1308 userActivityNoUpdateLocked( 1309 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1310 1311 // Tell the notifier whether wireless charging has started so that 1312 // it can provide feedback to the user. 1313 if (dockedOnWirelessCharger) { 1314 mNotifier.onWirelessChargingStarted(); 1315 } 1316 } 1317 1318 if (wasPowered != mIsPowered || oldLevelLow != mBatteryLevelLow) { 1319 if (oldLevelLow != mBatteryLevelLow && !mBatteryLevelLow) { 1320 if (DEBUG_SPEW) { 1321 Slog.d(TAG, "updateIsPoweredLocked: resetting low power snooze"); 1322 } 1323 mAutoLowPowerModeSnoozing = false; 1324 } 1325 updateLowPowerModeLocked(); 1326 } 1327 } 1328 } 1329 1330 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1331 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1332 // Don't wake when powered unless configured to do so. 1333 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1334 return false; 1335 } 1336 1337 // Don't wake when undocked from wireless charger. 1338 // See WirelessChargerDetector for justification. 1339 if (wasPowered && !mIsPowered 1340 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1341 return false; 1342 } 1343 1344 // Don't wake when docked on wireless charger unless we are certain of it. 1345 // See WirelessChargerDetector for justification. 1346 if (!wasPowered && mIsPowered 1347 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1348 && !dockedOnWirelessCharger) { 1349 return false; 1350 } 1351 1352 // If already dreaming and becoming powered, then don't wake. 1353 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1354 return false; 1355 } 1356 1357 // Otherwise wake up! 1358 return true; 1359 } 1360 1361 /** 1362 * Updates the value of mStayOn. 1363 * Sets DIRTY_STAY_ON if a change occurred. 1364 */ 1365 private void updateStayOnLocked(int dirty) { 1366 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1367 final boolean wasStayOn = mStayOn; 1368 if (mStayOnWhilePluggedInSetting != 0 1369 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1370 mStayOn = mBatteryManagerInternal.isPowered(mStayOnWhilePluggedInSetting); 1371 } else { 1372 mStayOn = false; 1373 } 1374 1375 if (mStayOn != wasStayOn) { 1376 mDirty |= DIRTY_STAY_ON; 1377 } 1378 } 1379 } 1380 1381 /** 1382 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1383 * Note that most wake-locks are ignored when the system is asleep. 1384 * 1385 * This function must have no other side-effects. 1386 */ 1387 @SuppressWarnings("deprecation") 1388 private void updateWakeLockSummaryLocked(int dirty) { 1389 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1390 mWakeLockSummary = 0; 1391 1392 final int numWakeLocks = mWakeLocks.size(); 1393 for (int i = 0; i < numWakeLocks; i++) { 1394 final WakeLock wakeLock = mWakeLocks.get(i); 1395 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1396 case PowerManager.PARTIAL_WAKE_LOCK: 1397 mWakeLockSummary |= WAKE_LOCK_CPU; 1398 break; 1399 case PowerManager.FULL_WAKE_LOCK: 1400 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1401 break; 1402 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1403 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1404 break; 1405 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1406 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1407 break; 1408 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1409 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1410 break; 1411 case PowerManager.DOZE_WAKE_LOCK: 1412 mWakeLockSummary |= WAKE_LOCK_DOZE; 1413 break; 1414 } 1415 } 1416 1417 // Cancel wake locks that make no sense based on the current state. 1418 if (mWakefulness != WAKEFULNESS_DOZING) { 1419 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1420 } 1421 if (mWakefulness == WAKEFULNESS_ASLEEP 1422 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1423 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1424 | WAKE_LOCK_BUTTON_BRIGHT); 1425 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1426 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1427 } 1428 } 1429 1430 // Infer implied wake locks where necessary based on the current state. 1431 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1432 if (mWakefulness == WAKEFULNESS_AWAKE) { 1433 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1434 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1435 mWakeLockSummary |= WAKE_LOCK_CPU; 1436 } 1437 } 1438 1439 if (DEBUG_SPEW) { 1440 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1441 + wakefulnessToString(mWakefulness) 1442 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1443 } 1444 } 1445 } 1446 1447 /** 1448 * Updates the value of mUserActivitySummary to summarize the user requested 1449 * state of the system such as whether the screen should be bright or dim. 1450 * Note that user activity is ignored when the system is asleep. 1451 * 1452 * This function must have no other side-effects. 1453 */ 1454 private void updateUserActivitySummaryLocked(long now, int dirty) { 1455 // Update the status of the user activity timeout timer. 1456 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1457 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1458 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1459 1460 long nextTimeout = 0; 1461 if (mWakefulness == WAKEFULNESS_AWAKE 1462 || mWakefulness == WAKEFULNESS_DREAMING 1463 || mWakefulness == WAKEFULNESS_DOZING) { 1464 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1465 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1466 1467 mUserActivitySummary = 0; 1468 if (mLastUserActivityTime >= mLastWakeTime) { 1469 nextTimeout = mLastUserActivityTime 1470 + screenOffTimeout - screenDimDuration; 1471 if (now < nextTimeout) { 1472 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1473 } else { 1474 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1475 if (now < nextTimeout) { 1476 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1477 } 1478 } 1479 } 1480 if (mUserActivitySummary == 0 1481 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1482 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1483 if (now < nextTimeout) { 1484 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_BRIGHT) { 1485 mUserActivitySummary = USER_ACTIVITY_SCREEN_BRIGHT; 1486 } else if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DIM) { 1487 mUserActivitySummary = USER_ACTIVITY_SCREEN_DIM; 1488 } 1489 } 1490 } 1491 if (mUserActivitySummary != 0) { 1492 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1493 msg.setAsynchronous(true); 1494 mHandler.sendMessageAtTime(msg, nextTimeout); 1495 } 1496 } else { 1497 mUserActivitySummary = 0; 1498 } 1499 1500 if (DEBUG_SPEW) { 1501 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1502 + wakefulnessToString(mWakefulness) 1503 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1504 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1505 } 1506 } 1507 } 1508 1509 /** 1510 * Called when a user activity timeout has occurred. 1511 * Simply indicates that something about user activity has changed so that the new 1512 * state can be recomputed when the power state is updated. 1513 * 1514 * This function must have no other side-effects besides setting the dirty 1515 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1516 */ 1517 private void handleUserActivityTimeout() { // runs on handler thread 1518 synchronized (mLock) { 1519 if (DEBUG_SPEW) { 1520 Slog.d(TAG, "handleUserActivityTimeout"); 1521 } 1522 1523 mDirty |= DIRTY_USER_ACTIVITY; 1524 updatePowerStateLocked(); 1525 } 1526 } 1527 1528 private int getScreenOffTimeoutLocked() { 1529 int timeout = mScreenOffTimeoutSetting; 1530 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1531 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1532 } 1533 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1534 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1535 } 1536 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1537 } 1538 1539 private int getScreenDimDurationLocked(int screenOffTimeout) { 1540 return Math.min(mMaximumScreenDimDurationConfig, 1541 (int)(screenOffTimeout * mMaximumScreenDimRatioConfig)); 1542 } 1543 1544 /** 1545 * Updates the wakefulness of the device. 1546 * 1547 * This is the function that decides whether the device should start dreaming 1548 * based on the current wake locks and user activity state. It may modify mDirty 1549 * if the wakefulness changes. 1550 * 1551 * Returns true if the wakefulness changed and we need to restart power state calculation. 1552 */ 1553 private boolean updateWakefulnessLocked(int dirty) { 1554 boolean changed = false; 1555 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1556 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1557 | DIRTY_DOCK_STATE)) != 0) { 1558 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1559 if (DEBUG_SPEW) { 1560 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1561 } 1562 final long time = SystemClock.uptimeMillis(); 1563 if (shouldNapAtBedTimeLocked()) { 1564 changed = napNoUpdateLocked(time, Process.SYSTEM_UID); 1565 } else { 1566 changed = goToSleepNoUpdateLocked(time, 1567 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0, Process.SYSTEM_UID); 1568 } 1569 } 1570 } 1571 return changed; 1572 } 1573 1574 /** 1575 * Returns true if the device should automatically nap and start dreaming when the user 1576 * activity timeout has expired and it's bedtime. 1577 */ 1578 private boolean shouldNapAtBedTimeLocked() { 1579 return mDreamsActivateOnSleepSetting 1580 || (mDreamsActivateOnDockSetting 1581 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1582 } 1583 1584 /** 1585 * Returns true if the device should go to sleep now. 1586 * Also used when exiting a dream to determine whether we should go back 1587 * to being fully awake or else go to sleep for good. 1588 */ 1589 private boolean isItBedTimeYetLocked() { 1590 return mBootCompleted && !isBeingKeptAwakeLocked(); 1591 } 1592 1593 /** 1594 * Returns true if the device is being kept awake by a wake lock, user activity 1595 * or the stay on while powered setting. We also keep the phone awake when 1596 * the proximity sensor returns a positive result so that the device does not 1597 * lock while in a phone call. This function only controls whether the device 1598 * will go to sleep or dream which is independent of whether it will be allowed 1599 * to suspend. 1600 */ 1601 private boolean isBeingKeptAwakeLocked() { 1602 return mStayOn 1603 || mProximityPositive 1604 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1605 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1606 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1607 } 1608 1609 /** 1610 * Determines whether to post a message to the sandman to update the dream state. 1611 */ 1612 private void updateDreamLocked(int dirty, boolean displayBecameReady) { 1613 if ((dirty & (DIRTY_WAKEFULNESS 1614 | DIRTY_USER_ACTIVITY 1615 | DIRTY_WAKE_LOCKS 1616 | DIRTY_BOOT_COMPLETED 1617 | DIRTY_SETTINGS 1618 | DIRTY_IS_POWERED 1619 | DIRTY_STAY_ON 1620 | DIRTY_PROXIMITY_POSITIVE 1621 | DIRTY_BATTERY_STATE)) != 0 || displayBecameReady) { 1622 if (mDisplayReady) { 1623 scheduleSandmanLocked(); 1624 } 1625 } 1626 } 1627 1628 private void scheduleSandmanLocked() { 1629 if (!mSandmanScheduled) { 1630 mSandmanScheduled = true; 1631 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1632 msg.setAsynchronous(true); 1633 mHandler.sendMessage(msg); 1634 } 1635 } 1636 1637 /** 1638 * Called when the device enters or exits a dreaming or dozing state. 1639 * 1640 * We do this asynchronously because we must call out of the power manager to start 1641 * the dream and we don't want to hold our lock while doing so. There is a risk that 1642 * the device will wake or go to sleep in the meantime so we have to handle that case. 1643 */ 1644 private void handleSandman() { // runs on handler thread 1645 // Handle preconditions. 1646 final boolean startDreaming; 1647 final int wakefulness; 1648 synchronized (mLock) { 1649 mSandmanScheduled = false; 1650 wakefulness = mWakefulness; 1651 if (mSandmanSummoned && mDisplayReady) { 1652 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1653 || wakefulness == WAKEFULNESS_DOZING); 1654 mSandmanSummoned = false; 1655 } else { 1656 startDreaming = false; 1657 } 1658 } 1659 1660 // Start dreaming if needed. 1661 // We only control the dream on the handler thread, so we don't need to worry about 1662 // concurrent attempts to start or stop the dream. 1663 final boolean isDreaming; 1664 if (mDreamManager != null) { 1665 // Restart the dream whenever the sandman is summoned. 1666 if (startDreaming) { 1667 mDreamManager.stopDream(false /*immediate*/); 1668 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1669 } 1670 isDreaming = mDreamManager.isDreaming(); 1671 } else { 1672 isDreaming = false; 1673 } 1674 1675 // Update dream state. 1676 synchronized (mLock) { 1677 // Remember the initial battery level when the dream started. 1678 if (startDreaming && isDreaming) { 1679 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1680 if (wakefulness == WAKEFULNESS_DOZING) { 1681 Slog.i(TAG, "Dozing..."); 1682 } else { 1683 Slog.i(TAG, "Dreaming..."); 1684 } 1685 } 1686 1687 // If preconditions changed, wait for the next iteration to determine 1688 // whether the dream should continue (or be restarted). 1689 if (mSandmanSummoned || mWakefulness != wakefulness) { 1690 return; // wait for next cycle 1691 } 1692 1693 // Determine whether the dream should continue. 1694 if (wakefulness == WAKEFULNESS_DREAMING) { 1695 if (isDreaming && canDreamLocked()) { 1696 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1697 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1698 - mDreamsBatteryLevelDrainCutoffConfig 1699 && !isBeingKeptAwakeLocked()) { 1700 // If the user activity timeout expired and the battery appears 1701 // to be draining faster than it is charging then stop dreaming 1702 // and go to sleep. 1703 Slog.i(TAG, "Stopping dream because the battery appears to " 1704 + "be draining faster than it is charging. " 1705 + "Battery level when dream started: " 1706 + mBatteryLevelWhenDreamStarted + "%. " 1707 + "Battery level now: " + mBatteryLevel + "%."); 1708 } else { 1709 return; // continue dreaming 1710 } 1711 } 1712 1713 // Dream has ended or will be stopped. Update the power state. 1714 if (isItBedTimeYetLocked()) { 1715 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1716 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0, Process.SYSTEM_UID); 1717 updatePowerStateLocked(); 1718 } else { 1719 wakeUpNoUpdateLocked(SystemClock.uptimeMillis(), Process.SYSTEM_UID); 1720 updatePowerStateLocked(); 1721 } 1722 } else if (wakefulness == WAKEFULNESS_DOZING) { 1723 if (isDreaming) { 1724 return; // continue dozing 1725 } 1726 1727 // Doze has ended or will be stopped. Update the power state. 1728 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis(), Process.SYSTEM_UID); 1729 updatePowerStateLocked(); 1730 } 1731 } 1732 1733 // Stop dream. 1734 if (isDreaming) { 1735 mDreamManager.stopDream(false /*immediate*/); 1736 } 1737 } 1738 1739 /** 1740 * Returns true if the device is allowed to dream in its current state. 1741 * This function is not called when dozing. 1742 */ 1743 private boolean canDreamLocked() { 1744 if (mWakefulness != WAKEFULNESS_DREAMING 1745 || !mDreamsSupportedConfig 1746 || !mDreamsEnabledSetting 1747 || !mDisplayPowerRequest.isBrightOrDim() 1748 || !mBootCompleted) { 1749 return false; 1750 } 1751 if (!isBeingKeptAwakeLocked()) { 1752 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1753 return false; 1754 } 1755 if (!mIsPowered 1756 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1757 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1758 return false; 1759 } 1760 if (mIsPowered 1761 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1762 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1763 return false; 1764 } 1765 } 1766 return true; 1767 } 1768 1769 private void handleScreenOnBlockerReleased() { 1770 synchronized (mLock) { 1771 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1772 updatePowerStateLocked(); 1773 } 1774 } 1775 1776 /** 1777 * Updates the display power state asynchronously. 1778 * When the update is finished, mDisplayReady will be set to true. The display 1779 * controller posts a message to tell us when the actual display power state 1780 * has been updated so we come back here to double-check and finish up. 1781 * 1782 * This function recalculates the display power state each time. 1783 * 1784 * @return True if the display became ready. 1785 */ 1786 private boolean updateDisplayPowerStateLocked(int dirty) { 1787 final boolean oldDisplayReady = mDisplayReady; 1788 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1789 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1790 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1791 mDisplayPowerRequest.policy = getDesiredScreenPolicyLocked(); 1792 1793 int screenBrightness = mScreenBrightnessSettingDefault; 1794 float screenAutoBrightnessAdjustment = 0.0f; 1795 boolean autoBrightness = (mScreenBrightnessModeSetting == 1796 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1797 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1798 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1799 autoBrightness = false; 1800 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1801 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1802 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1803 screenBrightness = mScreenBrightnessSetting; 1804 } 1805 if (autoBrightness) { 1806 screenBrightness = mScreenBrightnessSettingDefault; 1807 if (isValidAutoBrightnessAdjustment( 1808 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1809 screenAutoBrightnessAdjustment = 1810 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1811 } else if (isValidAutoBrightnessAdjustment( 1812 mScreenAutoBrightnessAdjustmentSetting)) { 1813 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1814 } 1815 } 1816 screenBrightness = Math.max(Math.min(screenBrightness, 1817 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1818 screenAutoBrightnessAdjustment = Math.max(Math.min( 1819 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1820 mDisplayPowerRequest.screenBrightness = screenBrightness; 1821 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1822 screenAutoBrightnessAdjustment; 1823 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1824 1825 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1826 1827 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1828 1829 mDisplayPowerRequest.lowPowerMode = mLowPowerModeEnabled; 1830 1831 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DOZE) { 1832 mDisplayPowerRequest.dozeScreenState = mDozeScreenStateOverrideFromDreamManager; 1833 mDisplayPowerRequest.dozeScreenBrightness = 1834 mDozeScreenBrightnessOverrideFromDreamManager; 1835 } else { 1836 mDisplayPowerRequest.dozeScreenState = Display.STATE_UNKNOWN; 1837 mDisplayPowerRequest.dozeScreenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 1838 } 1839 1840 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1841 mRequestWaitForNegativeProximity); 1842 mRequestWaitForNegativeProximity = false; 1843 1844 if (DEBUG_SPEW) { 1845 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1846 + ", policy=" + mDisplayPowerRequest.policy 1847 + ", mWakefulness=" + mWakefulness 1848 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1849 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1850 + ", mBootCompleted=" + mBootCompleted); 1851 } 1852 } 1853 return mDisplayReady && !oldDisplayReady; 1854 } 1855 1856 private static boolean isValidBrightness(int value) { 1857 return value >= 0 && value <= 255; 1858 } 1859 1860 private static boolean isValidAutoBrightnessAdjustment(float value) { 1861 // Handles NaN by always returning false. 1862 return value >= -1.0f && value <= 1.0f; 1863 } 1864 1865 private int getDesiredScreenPolicyLocked() { 1866 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1867 return DisplayPowerRequest.POLICY_OFF; 1868 } 1869 1870 if (mWakefulness == WAKEFULNESS_DOZING) { 1871 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1872 return DisplayPowerRequest.POLICY_DOZE; 1873 } 1874 if (mDozeAfterScreenOffConfig) { 1875 return DisplayPowerRequest.POLICY_OFF; 1876 } 1877 // Fall through and preserve the current screen policy if not configured to 1878 // doze after screen off. This causes the screen off transition to be skipped. 1879 } 1880 1881 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1882 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1883 || !mBootCompleted) { 1884 return DisplayPowerRequest.POLICY_BRIGHT; 1885 } 1886 1887 return DisplayPowerRequest.POLICY_DIM; 1888 } 1889 1890 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1891 new DisplayManagerInternal.DisplayPowerCallbacks() { 1892 private int mDisplayState = Display.STATE_UNKNOWN; 1893 1894 @Override 1895 public void onStateChanged() { 1896 synchronized (mLock) { 1897 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1898 updatePowerStateLocked(); 1899 } 1900 } 1901 1902 @Override 1903 public void onProximityPositive() { 1904 synchronized (mLock) { 1905 mProximityPositive = true; 1906 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1907 updatePowerStateLocked(); 1908 } 1909 } 1910 1911 @Override 1912 public void onProximityNegative() { 1913 synchronized (mLock) { 1914 mProximityPositive = false; 1915 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1916 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1917 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1918 updatePowerStateLocked(); 1919 } 1920 } 1921 1922 @Override 1923 public void onDisplayStateChange(int state) { 1924 // This method is only needed to support legacy display blanking behavior 1925 // where the display's power state is coupled to suspend or to the power HAL. 1926 // The order of operations matters here. 1927 synchronized (mLock) { 1928 if (mDisplayState != state) { 1929 mDisplayState = state; 1930 if (state == Display.STATE_OFF) { 1931 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1932 setHalInteractiveModeLocked(false); 1933 } 1934 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1935 setHalAutoSuspendModeLocked(true); 1936 } 1937 } else { 1938 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1939 setHalAutoSuspendModeLocked(false); 1940 } 1941 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1942 setHalInteractiveModeLocked(true); 1943 } 1944 } 1945 } 1946 } 1947 } 1948 1949 @Override 1950 public void acquireSuspendBlocker() { 1951 mDisplaySuspendBlocker.acquire(); 1952 } 1953 1954 @Override 1955 public void releaseSuspendBlocker() { 1956 mDisplaySuspendBlocker.release(); 1957 } 1958 1959 @Override 1960 public String toString() { 1961 synchronized (this) { 1962 return "state=" + Display.stateToString(mDisplayState); 1963 } 1964 } 1965 }; 1966 1967 private boolean shouldUseProximitySensorLocked() { 1968 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1969 } 1970 1971 /** 1972 * Updates the suspend blocker that keeps the CPU alive. 1973 * 1974 * This function must have no other side-effects. 1975 */ 1976 private void updateSuspendBlockerLocked() { 1977 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1978 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1979 final boolean autoSuspend = !needDisplaySuspendBlocker; 1980 1981 // Disable auto-suspend if needed. 1982 if (!autoSuspend) { 1983 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1984 setHalAutoSuspendModeLocked(false); 1985 } 1986 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1987 setHalInteractiveModeLocked(true); 1988 } 1989 } 1990 1991 // First acquire suspend blockers if needed. 1992 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1993 mWakeLockSuspendBlocker.acquire(); 1994 mHoldingWakeLockSuspendBlocker = true; 1995 } 1996 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1997 mDisplaySuspendBlocker.acquire(); 1998 mHoldingDisplaySuspendBlocker = true; 1999 } 2000 2001 // Then release suspend blockers if needed. 2002 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 2003 mWakeLockSuspendBlocker.release(); 2004 mHoldingWakeLockSuspendBlocker = false; 2005 } 2006 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 2007 mDisplaySuspendBlocker.release(); 2008 mHoldingDisplaySuspendBlocker = false; 2009 } 2010 2011 // Enable auto-suspend if needed. 2012 if (autoSuspend) { 2013 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 2014 setHalInteractiveModeLocked(false); 2015 } 2016 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 2017 setHalAutoSuspendModeLocked(true); 2018 } 2019 } 2020 } 2021 2022 /** 2023 * Return true if we must keep a suspend blocker active on behalf of the display. 2024 * We do so if the screen is on or is in transition between states. 2025 */ 2026 private boolean needDisplaySuspendBlockerLocked() { 2027 if (!mDisplayReady) { 2028 return true; 2029 } 2030 if (mDisplayPowerRequest.isBrightOrDim()) { 2031 // If we asked for the screen to be on but it is off due to the proximity 2032 // sensor then we may suspend but only if the configuration allows it. 2033 // On some hardware it may not be safe to suspend because the proximity 2034 // sensor may not be correctly configured as a wake-up source. 2035 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 2036 || !mSuspendWhenScreenOffDueToProximityConfig) { 2037 return true; 2038 } 2039 } 2040 // Let the system suspend if the screen is off or dozing. 2041 return false; 2042 } 2043 2044 private void setHalAutoSuspendModeLocked(boolean enable) { 2045 if (enable != mHalAutoSuspendModeEnabled) { 2046 if (DEBUG) { 2047 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 2048 } 2049 mHalAutoSuspendModeEnabled = enable; 2050 Trace.traceBegin(Trace.TRACE_TAG_POWER, "setHalAutoSuspend(" + enable + ")"); 2051 try { 2052 nativeSetAutoSuspend(enable); 2053 } finally { 2054 Trace.traceEnd(Trace.TRACE_TAG_POWER); 2055 } 2056 } 2057 } 2058 2059 private void setHalInteractiveModeLocked(boolean enable) { 2060 if (enable != mHalInteractiveModeEnabled) { 2061 if (DEBUG) { 2062 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 2063 } 2064 mHalInteractiveModeEnabled = enable; 2065 Trace.traceBegin(Trace.TRACE_TAG_POWER, "setHalInteractive(" + enable + ")"); 2066 try { 2067 nativeSetInteractive(enable); 2068 } finally { 2069 Trace.traceEnd(Trace.TRACE_TAG_POWER); 2070 } 2071 } 2072 } 2073 2074 private boolean isInteractiveInternal() { 2075 synchronized (mLock) { 2076 return mInteractive; 2077 } 2078 } 2079 2080 private boolean isLowPowerModeInternal() { 2081 synchronized (mLock) { 2082 return mLowPowerModeEnabled; 2083 } 2084 } 2085 2086 private void handleBatteryStateChangedLocked() { 2087 mDirty |= DIRTY_BATTERY_STATE; 2088 updatePowerStateLocked(); 2089 } 2090 2091 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 2092 final String reason, boolean wait) { 2093 if (mHandler == null || !mSystemReady) { 2094 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 2095 } 2096 2097 Runnable runnable = new Runnable() { 2098 @Override 2099 public void run() { 2100 synchronized (this) { 2101 if (shutdown) { 2102 ShutdownThread.shutdown(mContext, confirm); 2103 } else { 2104 ShutdownThread.reboot(mContext, reason, confirm); 2105 } 2106 } 2107 } 2108 }; 2109 2110 // ShutdownThread must run on a looper capable of displaying the UI. 2111 Message msg = Message.obtain(mHandler, runnable); 2112 msg.setAsynchronous(true); 2113 mHandler.sendMessage(msg); 2114 2115 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 2116 if (wait) { 2117 synchronized (runnable) { 2118 while (true) { 2119 try { 2120 runnable.wait(); 2121 } catch (InterruptedException e) { 2122 } 2123 } 2124 } 2125 } 2126 } 2127 2128 private void crashInternal(final String message) { 2129 Thread t = new Thread("PowerManagerService.crash()") { 2130 @Override 2131 public void run() { 2132 throw new RuntimeException(message); 2133 } 2134 }; 2135 try { 2136 t.start(); 2137 t.join(); 2138 } catch (InterruptedException e) { 2139 Log.wtf(TAG, e); 2140 } 2141 } 2142 2143 private void setStayOnSettingInternal(int val) { 2144 Settings.Global.putInt(mContext.getContentResolver(), 2145 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 2146 } 2147 2148 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 2149 synchronized (mLock) { 2150 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 2151 mDirty |= DIRTY_SETTINGS; 2152 updatePowerStateLocked(); 2153 } 2154 } 2155 2156 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 2157 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 2158 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 2159 } 2160 2161 private void setAttentionLightInternal(boolean on, int color) { 2162 Light light; 2163 synchronized (mLock) { 2164 if (!mSystemReady) { 2165 return; 2166 } 2167 light = mAttentionLight; 2168 } 2169 2170 // Control light outside of lock. 2171 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 2172 } 2173 2174 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 2175 synchronized (mLock) { 2176 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 2177 mScreenBrightnessOverrideFromWindowManager = brightness; 2178 mDirty |= DIRTY_SETTINGS; 2179 updatePowerStateLocked(); 2180 } 2181 } 2182 } 2183 2184 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 2185 synchronized (mLock) { 2186 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 2187 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 2188 mDirty |= DIRTY_SETTINGS; 2189 updatePowerStateLocked(); 2190 } 2191 } 2192 } 2193 2194 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2195 synchronized (mLock) { 2196 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2197 mTemporaryScreenBrightnessSettingOverride = brightness; 2198 mDirty |= DIRTY_SETTINGS; 2199 updatePowerStateLocked(); 2200 } 2201 } 2202 } 2203 2204 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2205 synchronized (mLock) { 2206 // Note: This condition handles NaN because NaN is not equal to any other 2207 // value, including itself. 2208 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2209 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2210 mDirty |= DIRTY_SETTINGS; 2211 updatePowerStateLocked(); 2212 } 2213 } 2214 } 2215 2216 private void setDozeOverrideFromDreamManagerInternal( 2217 int screenState, int screenBrightness) { 2218 synchronized (mLock) { 2219 if (mDozeScreenStateOverrideFromDreamManager != screenState 2220 || mDozeScreenBrightnessOverrideFromDreamManager != screenBrightness) { 2221 mDozeScreenStateOverrideFromDreamManager = screenState; 2222 mDozeScreenBrightnessOverrideFromDreamManager = screenBrightness; 2223 mDirty |= DIRTY_SETTINGS; 2224 updatePowerStateLocked(); 2225 } 2226 } 2227 } 2228 2229 private void powerHintInternal(int hintId, int data) { 2230 nativeSendPowerHint(hintId, data); 2231 } 2232 2233 /** 2234 * Low-level function turn the device off immediately, without trying 2235 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2236 */ 2237 public static void lowLevelShutdown() { 2238 SystemProperties.set("sys.powerctl", "shutdown"); 2239 } 2240 2241 /** 2242 * Low-level function to reboot the device. On success, this 2243 * function doesn't return. If more than 20 seconds passes from 2244 * the time a reboot is requested (120 seconds for reboot to 2245 * recovery), this method returns. 2246 * 2247 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2248 */ 2249 public static void lowLevelReboot(String reason) { 2250 if (reason == null) { 2251 reason = ""; 2252 } 2253 long duration; 2254 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2255 // If we are rebooting to go into recovery, instead of 2256 // setting sys.powerctl directly we'll start the 2257 // pre-recovery service which will do some preparation for 2258 // recovery and then reboot for us. 2259 // 2260 // This preparation can take more than 20 seconds if 2261 // there's a very large update package, so lengthen the 2262 // timeout. 2263 SystemProperties.set("ctl.start", "pre-recovery"); 2264 duration = 120 * 1000L; 2265 } else { 2266 SystemProperties.set("sys.powerctl", "reboot," + reason); 2267 duration = 20 * 1000L; 2268 } 2269 try { 2270 Thread.sleep(duration); 2271 } catch (InterruptedException e) { 2272 Thread.currentThread().interrupt(); 2273 } 2274 } 2275 2276 @Override // Watchdog.Monitor implementation 2277 public void monitor() { 2278 // Grab and release lock for watchdog monitor to detect deadlocks. 2279 synchronized (mLock) { 2280 } 2281 } 2282 2283 private void dumpInternal(PrintWriter pw) { 2284 pw.println("POWER MANAGER (dumpsys power)\n"); 2285 2286 final WirelessChargerDetector wcd; 2287 synchronized (mLock) { 2288 pw.println("Power Manager State:"); 2289 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2290 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2291 pw.println(" mInteractive=" + mInteractive); 2292 pw.println(" mIsPowered=" + mIsPowered); 2293 pw.println(" mPlugType=" + mPlugType); 2294 pw.println(" mBatteryLevel=" + mBatteryLevel); 2295 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2296 pw.println(" mDockState=" + mDockState); 2297 pw.println(" mStayOn=" + mStayOn); 2298 pw.println(" mProximityPositive=" + mProximityPositive); 2299 pw.println(" mBootCompleted=" + mBootCompleted); 2300 pw.println(" mSystemReady=" + mSystemReady); 2301 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2302 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2303 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2304 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2305 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2306 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2307 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2308 pw.println(" mLowPowerModeEnabled=" + mLowPowerModeEnabled); 2309 pw.println(" mBatteryLevelLow=" + mBatteryLevelLow); 2310 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2311 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2312 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2313 pw.println(" mLastUserActivityTimeNoChangeLights=" 2314 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2315 pw.println(" mLastInteractivePowerHintTime=" 2316 + TimeUtils.formatUptime(mLastInteractivePowerHintTime)); 2317 pw.println(" mDisplayReady=" + mDisplayReady); 2318 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2319 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2320 2321 pw.println(); 2322 pw.println("Settings and Configuration:"); 2323 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2324 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2325 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2326 + mDecoupleHalInteractiveModeFromDisplayConfig); 2327 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2328 + mWakeUpWhenPluggedOrUnpluggedConfig); 2329 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2330 + mSuspendWhenScreenOffDueToProximityConfig); 2331 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2332 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2333 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2334 + mDreamsActivatedOnSleepByDefaultConfig); 2335 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2336 + mDreamsActivatedOnDockByDefaultConfig); 2337 pw.println(" mDreamsEnabledOnBatteryConfig=" 2338 + mDreamsEnabledOnBatteryConfig); 2339 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2340 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2341 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2342 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2343 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2344 + mDreamsBatteryLevelDrainCutoffConfig); 2345 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2346 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2347 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2348 pw.println(" mDozeAfterScreenOffConfig=" + mDozeAfterScreenOffConfig); 2349 pw.println(" mLowPowerModeSetting=" + mLowPowerModeSetting); 2350 pw.println(" mAutoLowPowerModeEnabled=" + mAutoLowPowerModeEnabled); 2351 pw.println(" mAutoLowPowerModeSnoozing=" + mAutoLowPowerModeSnoozing); 2352 pw.println(" mMinimumScreenOffTimeoutConfig=" + mMinimumScreenOffTimeoutConfig); 2353 pw.println(" mMaximumScreenDimDurationConfig=" + mMaximumScreenDimDurationConfig); 2354 pw.println(" mMaximumScreenDimRatioConfig=" + mMaximumScreenDimRatioConfig); 2355 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2356 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2357 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2358 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2359 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2360 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2361 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2362 + mScreenAutoBrightnessAdjustmentSetting); 2363 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2364 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2365 + mScreenBrightnessOverrideFromWindowManager); 2366 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2367 + mUserActivityTimeoutOverrideFromWindowManager); 2368 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2369 + mTemporaryScreenBrightnessSettingOverride); 2370 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2371 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2372 pw.println(" mDozeScreenStateOverrideFromDreamManager=" 2373 + mDozeScreenStateOverrideFromDreamManager); 2374 pw.println(" mDozeScreenBrightnessOverrideFromDreamManager=" 2375 + mDozeScreenBrightnessOverrideFromDreamManager); 2376 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2377 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2378 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2379 2380 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2381 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2382 pw.println(); 2383 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2384 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2385 2386 pw.println(); 2387 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2388 for (WakeLock wl : mWakeLocks) { 2389 pw.println(" " + wl); 2390 } 2391 2392 pw.println(); 2393 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2394 for (SuspendBlocker sb : mSuspendBlockers) { 2395 pw.println(" " + sb); 2396 } 2397 2398 pw.println(); 2399 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2400 2401 pw.println(); 2402 pw.println("Display Power: " + mDisplayPowerCallbacks); 2403 2404 wcd = mWirelessChargerDetector; 2405 } 2406 2407 if (wcd != null) { 2408 wcd.dump(pw); 2409 } 2410 } 2411 2412 private SuspendBlocker createSuspendBlockerLocked(String name) { 2413 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2414 mSuspendBlockers.add(suspendBlocker); 2415 return suspendBlocker; 2416 } 2417 2418 private static String wakefulnessToString(int wakefulness) { 2419 switch (wakefulness) { 2420 case WAKEFULNESS_ASLEEP: 2421 return "Asleep"; 2422 case WAKEFULNESS_AWAKE: 2423 return "Awake"; 2424 case WAKEFULNESS_DREAMING: 2425 return "Dreaming"; 2426 case WAKEFULNESS_DOZING: 2427 return "Dozing"; 2428 default: 2429 return Integer.toString(wakefulness); 2430 } 2431 } 2432 2433 private static WorkSource copyWorkSource(WorkSource workSource) { 2434 return workSource != null ? new WorkSource(workSource) : null; 2435 } 2436 2437 private final class BatteryReceiver extends BroadcastReceiver { 2438 @Override 2439 public void onReceive(Context context, Intent intent) { 2440 synchronized (mLock) { 2441 handleBatteryStateChangedLocked(); 2442 } 2443 } 2444 } 2445 2446 private final class DreamReceiver extends BroadcastReceiver { 2447 @Override 2448 public void onReceive(Context context, Intent intent) { 2449 synchronized (mLock) { 2450 scheduleSandmanLocked(); 2451 } 2452 } 2453 } 2454 2455 private final class UserSwitchedReceiver extends BroadcastReceiver { 2456 @Override 2457 public void onReceive(Context context, Intent intent) { 2458 synchronized (mLock) { 2459 handleSettingsChangedLocked(); 2460 } 2461 } 2462 } 2463 2464 private final class DockReceiver extends BroadcastReceiver { 2465 @Override 2466 public void onReceive(Context context, Intent intent) { 2467 synchronized (mLock) { 2468 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2469 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2470 if (mDockState != dockState) { 2471 mDockState = dockState; 2472 mDirty |= DIRTY_DOCK_STATE; 2473 updatePowerStateLocked(); 2474 } 2475 } 2476 } 2477 } 2478 2479 private final class SettingsObserver extends ContentObserver { 2480 public SettingsObserver(Handler handler) { 2481 super(handler); 2482 } 2483 2484 @Override 2485 public void onChange(boolean selfChange, Uri uri) { 2486 synchronized (mLock) { 2487 handleSettingsChangedLocked(); 2488 } 2489 } 2490 } 2491 2492 /** 2493 * Handler for asynchronous operations performed by the power manager. 2494 */ 2495 private final class PowerManagerHandler extends Handler { 2496 public PowerManagerHandler(Looper looper) { 2497 super(looper, null, true /*async*/); 2498 } 2499 2500 @Override 2501 public void handleMessage(Message msg) { 2502 switch (msg.what) { 2503 case MSG_USER_ACTIVITY_TIMEOUT: 2504 handleUserActivityTimeout(); 2505 break; 2506 case MSG_SANDMAN: 2507 handleSandman(); 2508 break; 2509 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2510 handleScreenOnBlockerReleased(); 2511 break; 2512 } 2513 } 2514 } 2515 2516 /** 2517 * Represents a wake lock that has been acquired by an application. 2518 */ 2519 private final class WakeLock implements IBinder.DeathRecipient { 2520 public final IBinder mLock; 2521 public int mFlags; 2522 public String mTag; 2523 public final String mPackageName; 2524 public WorkSource mWorkSource; 2525 public String mHistoryTag; 2526 public final int mOwnerUid; 2527 public final int mOwnerPid; 2528 public boolean mNotifiedAcquired; 2529 2530 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2531 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2532 mLock = lock; 2533 mFlags = flags; 2534 mTag = tag; 2535 mPackageName = packageName; 2536 mWorkSource = copyWorkSource(workSource); 2537 mHistoryTag = historyTag; 2538 mOwnerUid = ownerUid; 2539 mOwnerPid = ownerPid; 2540 } 2541 2542 @Override 2543 public void binderDied() { 2544 PowerManagerService.this.handleWakeLockDeath(this); 2545 } 2546 2547 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2548 int ownerUid, int ownerPid) { 2549 return mFlags == flags 2550 && mTag.equals(tag) 2551 && hasSameWorkSource(workSource) 2552 && mOwnerUid == ownerUid 2553 && mOwnerPid == ownerPid; 2554 } 2555 2556 public void updateProperties(int flags, String tag, String packageName, 2557 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2558 if (!mPackageName.equals(packageName)) { 2559 throw new IllegalStateException("Existing wake lock package name changed: " 2560 + mPackageName + " to " + packageName); 2561 } 2562 if (mOwnerUid != ownerUid) { 2563 throw new IllegalStateException("Existing wake lock uid changed: " 2564 + mOwnerUid + " to " + ownerUid); 2565 } 2566 if (mOwnerPid != ownerPid) { 2567 throw new IllegalStateException("Existing wake lock pid changed: " 2568 + mOwnerPid + " to " + ownerPid); 2569 } 2570 mFlags = flags; 2571 mTag = tag; 2572 updateWorkSource(workSource); 2573 mHistoryTag = historyTag; 2574 } 2575 2576 public boolean hasSameWorkSource(WorkSource workSource) { 2577 return Objects.equal(mWorkSource, workSource); 2578 } 2579 2580 public void updateWorkSource(WorkSource workSource) { 2581 mWorkSource = copyWorkSource(workSource); 2582 } 2583 2584 @Override 2585 public String toString() { 2586 return getLockLevelString() 2587 + " '" + mTag + "'" + getLockFlagsString() 2588 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2589 } 2590 2591 @SuppressWarnings("deprecation") 2592 private String getLockLevelString() { 2593 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2594 case PowerManager.FULL_WAKE_LOCK: 2595 return "FULL_WAKE_LOCK "; 2596 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2597 return "SCREEN_BRIGHT_WAKE_LOCK "; 2598 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2599 return "SCREEN_DIM_WAKE_LOCK "; 2600 case PowerManager.PARTIAL_WAKE_LOCK: 2601 return "PARTIAL_WAKE_LOCK "; 2602 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2603 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2604 case PowerManager.DOZE_WAKE_LOCK: 2605 return "DOZE_WAKE_LOCK "; 2606 default: 2607 return "??? "; 2608 } 2609 } 2610 2611 private String getLockFlagsString() { 2612 String result = ""; 2613 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2614 result += " ACQUIRE_CAUSES_WAKEUP"; 2615 } 2616 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2617 result += " ON_AFTER_RELEASE"; 2618 } 2619 return result; 2620 } 2621 } 2622 2623 private final class SuspendBlockerImpl implements SuspendBlocker { 2624 private final String mName; 2625 private final String mTraceName; 2626 private int mReferenceCount; 2627 2628 public SuspendBlockerImpl(String name) { 2629 mName = name; 2630 mTraceName = "SuspendBlocker (" + name + ")"; 2631 } 2632 2633 @Override 2634 protected void finalize() throws Throwable { 2635 try { 2636 if (mReferenceCount != 0) { 2637 Slog.wtf(TAG, "Suspend blocker \"" + mName 2638 + "\" was finalized without being released!"); 2639 mReferenceCount = 0; 2640 nativeReleaseSuspendBlocker(mName); 2641 Trace.asyncTraceEnd(Trace.TRACE_TAG_POWER, mTraceName, 0); 2642 } 2643 } finally { 2644 super.finalize(); 2645 } 2646 } 2647 2648 @Override 2649 public void acquire() { 2650 synchronized (this) { 2651 mReferenceCount += 1; 2652 if (mReferenceCount == 1) { 2653 if (DEBUG_SPEW) { 2654 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2655 } 2656 Trace.asyncTraceBegin(Trace.TRACE_TAG_POWER, mTraceName, 0); 2657 nativeAcquireSuspendBlocker(mName); 2658 } 2659 } 2660 } 2661 2662 @Override 2663 public void release() { 2664 synchronized (this) { 2665 mReferenceCount -= 1; 2666 if (mReferenceCount == 0) { 2667 if (DEBUG_SPEW) { 2668 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2669 } 2670 nativeReleaseSuspendBlocker(mName); 2671 Trace.asyncTraceEnd(Trace.TRACE_TAG_POWER, mTraceName, 0); 2672 } else if (mReferenceCount < 0) { 2673 Slog.wtf(TAG, "Suspend blocker \"" + mName 2674 + "\" was released without being acquired!", new Throwable()); 2675 mReferenceCount = 0; 2676 } 2677 } 2678 } 2679 2680 @Override 2681 public String toString() { 2682 synchronized (this) { 2683 return mName + ": ref count=" + mReferenceCount; 2684 } 2685 } 2686 } 2687 2688 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2689 private static final String TRACE_NAME = "ScreenOnBlocker"; 2690 2691 private int mNestCount; 2692 2693 public boolean isHeld() { 2694 synchronized (this) { 2695 return mNestCount != 0; 2696 } 2697 } 2698 2699 @Override 2700 public void acquire() { 2701 synchronized (this) { 2702 mNestCount += 1; 2703 if (DEBUG || true) { 2704 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2705 } 2706 if (mNestCount == 1) { 2707 Trace.asyncTraceBegin(Trace.TRACE_TAG_POWER, TRACE_NAME, 0); 2708 } 2709 } 2710 } 2711 2712 @Override 2713 public void release() { 2714 synchronized (this) { 2715 mNestCount -= 1; 2716 if (mNestCount == 0) { 2717 if (DEBUG || true) { 2718 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2719 } 2720 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2721 Trace.asyncTraceEnd(Trace.TRACE_TAG_POWER, TRACE_NAME, 0); 2722 } else if (mNestCount < 0) { 2723 Slog.wtf(TAG, "Screen on blocker was released without being acquired!", 2724 new Throwable()); 2725 mNestCount = 0; 2726 } 2727 } 2728 } 2729 2730 @Override 2731 public String toString() { 2732 synchronized (this) { 2733 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2734 } 2735 } 2736 } 2737 2738 private final class BinderService extends IPowerManager.Stub { 2739 @Override // Binder call 2740 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2741 String packageName, int uid) { 2742 if (uid < 0) { 2743 uid = Binder.getCallingUid(); 2744 } 2745 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2746 } 2747 2748 @Override // Binder call 2749 public void powerHint(int hintId, int data) { 2750 if (!mSystemReady) { 2751 // Service not ready yet, so who the heck cares about power hints, bah. 2752 return; 2753 } 2754 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2755 powerHintInternal(hintId, data); 2756 } 2757 2758 @Override // Binder call 2759 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2760 WorkSource ws, String historyTag) { 2761 if (lock == null) { 2762 throw new IllegalArgumentException("lock must not be null"); 2763 } 2764 if (packageName == null) { 2765 throw new IllegalArgumentException("packageName must not be null"); 2766 } 2767 PowerManager.validateWakeLockParameters(flags, tag); 2768 2769 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2770 if ((flags & PowerManager.DOZE_WAKE_LOCK) != 0) { 2771 mContext.enforceCallingOrSelfPermission( 2772 android.Manifest.permission.DEVICE_POWER, null); 2773 } 2774 if (ws != null && ws.size() != 0) { 2775 mContext.enforceCallingOrSelfPermission( 2776 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2777 } else { 2778 ws = null; 2779 } 2780 2781 final int uid = Binder.getCallingUid(); 2782 final int pid = Binder.getCallingPid(); 2783 final long ident = Binder.clearCallingIdentity(); 2784 try { 2785 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2786 } finally { 2787 Binder.restoreCallingIdentity(ident); 2788 } 2789 } 2790 2791 @Override // Binder call 2792 public void releaseWakeLock(IBinder lock, int flags) { 2793 if (lock == null) { 2794 throw new IllegalArgumentException("lock must not be null"); 2795 } 2796 2797 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2798 2799 final long ident = Binder.clearCallingIdentity(); 2800 try { 2801 releaseWakeLockInternal(lock, flags); 2802 } finally { 2803 Binder.restoreCallingIdentity(ident); 2804 } 2805 } 2806 2807 @Override // Binder call 2808 public void updateWakeLockUids(IBinder lock, int[] uids) { 2809 WorkSource ws = null; 2810 2811 if (uids != null) { 2812 ws = new WorkSource(); 2813 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2814 // one at a time? 2815 for (int i = 0; i < uids.length; i++) { 2816 ws.add(uids[i]); 2817 } 2818 } 2819 updateWakeLockWorkSource(lock, ws, null); 2820 } 2821 2822 @Override // Binder call 2823 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2824 if (lock == null) { 2825 throw new IllegalArgumentException("lock must not be null"); 2826 } 2827 2828 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2829 if (ws != null && ws.size() != 0) { 2830 mContext.enforceCallingOrSelfPermission( 2831 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2832 } else { 2833 ws = null; 2834 } 2835 2836 final int callingUid = Binder.getCallingUid(); 2837 final long ident = Binder.clearCallingIdentity(); 2838 try { 2839 updateWakeLockWorkSourceInternal(lock, ws, historyTag, callingUid); 2840 } finally { 2841 Binder.restoreCallingIdentity(ident); 2842 } 2843 } 2844 2845 @Override // Binder call 2846 public boolean isWakeLockLevelSupported(int level) { 2847 final long ident = Binder.clearCallingIdentity(); 2848 try { 2849 return isWakeLockLevelSupportedInternal(level); 2850 } finally { 2851 Binder.restoreCallingIdentity(ident); 2852 } 2853 } 2854 2855 @Override // Binder call 2856 public void userActivity(long eventTime, int event, int flags) { 2857 final long now = SystemClock.uptimeMillis(); 2858 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2859 != PackageManager.PERMISSION_GRANTED 2860 && mContext.checkCallingOrSelfPermission( 2861 android.Manifest.permission.USER_ACTIVITY) 2862 != PackageManager.PERMISSION_GRANTED) { 2863 // Once upon a time applications could call userActivity(). 2864 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2865 // request instead of throwing a SecurityException so we don't break old apps. 2866 synchronized (mLock) { 2867 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2868 mLastWarningAboutUserActivityPermission = now; 2869 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2870 + "caller does not have DEVICE_POWER or USER_ACTIVITY " 2871 + "permission. Please fix your app! " 2872 + " pid=" + Binder.getCallingPid() 2873 + " uid=" + Binder.getCallingUid()); 2874 } 2875 } 2876 return; 2877 } 2878 2879 if (eventTime > SystemClock.uptimeMillis()) { 2880 throw new IllegalArgumentException("event time must not be in the future"); 2881 } 2882 2883 final int uid = Binder.getCallingUid(); 2884 final long ident = Binder.clearCallingIdentity(); 2885 try { 2886 userActivityInternal(eventTime, event, flags, uid); 2887 } finally { 2888 Binder.restoreCallingIdentity(ident); 2889 } 2890 } 2891 2892 @Override // Binder call 2893 public void wakeUp(long eventTime) { 2894 if (eventTime > SystemClock.uptimeMillis()) { 2895 throw new IllegalArgumentException("event time must not be in the future"); 2896 } 2897 2898 mContext.enforceCallingOrSelfPermission( 2899 android.Manifest.permission.DEVICE_POWER, null); 2900 2901 final int uid = Binder.getCallingUid(); 2902 final long ident = Binder.clearCallingIdentity(); 2903 try { 2904 wakeUpInternal(eventTime, uid); 2905 } finally { 2906 Binder.restoreCallingIdentity(ident); 2907 } 2908 } 2909 2910 @Override // Binder call 2911 public void goToSleep(long eventTime, int reason, int flags) { 2912 if (eventTime > SystemClock.uptimeMillis()) { 2913 throw new IllegalArgumentException("event time must not be in the future"); 2914 } 2915 2916 mContext.enforceCallingOrSelfPermission( 2917 android.Manifest.permission.DEVICE_POWER, null); 2918 2919 final int uid = Binder.getCallingUid(); 2920 final long ident = Binder.clearCallingIdentity(); 2921 try { 2922 goToSleepInternal(eventTime, reason, flags, uid); 2923 } finally { 2924 Binder.restoreCallingIdentity(ident); 2925 } 2926 } 2927 2928 @Override // Binder call 2929 public void nap(long eventTime) { 2930 if (eventTime > SystemClock.uptimeMillis()) { 2931 throw new IllegalArgumentException("event time must not be in the future"); 2932 } 2933 2934 mContext.enforceCallingOrSelfPermission( 2935 android.Manifest.permission.DEVICE_POWER, null); 2936 2937 final int uid = Binder.getCallingUid(); 2938 final long ident = Binder.clearCallingIdentity(); 2939 try { 2940 napInternal(eventTime, uid); 2941 } finally { 2942 Binder.restoreCallingIdentity(ident); 2943 } 2944 } 2945 2946 @Override // Binder call 2947 public boolean isInteractive() { 2948 final long ident = Binder.clearCallingIdentity(); 2949 try { 2950 return isInteractiveInternal(); 2951 } finally { 2952 Binder.restoreCallingIdentity(ident); 2953 } 2954 } 2955 2956 @Override // Binder call 2957 public boolean isPowerSaveMode() { 2958 final long ident = Binder.clearCallingIdentity(); 2959 try { 2960 return isLowPowerModeInternal(); 2961 } finally { 2962 Binder.restoreCallingIdentity(ident); 2963 } 2964 } 2965 2966 /** 2967 * Reboots the device. 2968 * 2969 * @param confirm If true, shows a reboot confirmation dialog. 2970 * @param reason The reason for the reboot, or null if none. 2971 * @param wait If true, this call waits for the reboot to complete and does not return. 2972 */ 2973 @Override // Binder call 2974 public void reboot(boolean confirm, String reason, boolean wait) { 2975 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2976 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2977 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2978 } 2979 2980 final long ident = Binder.clearCallingIdentity(); 2981 try { 2982 shutdownOrRebootInternal(false, confirm, reason, wait); 2983 } finally { 2984 Binder.restoreCallingIdentity(ident); 2985 } 2986 } 2987 2988 /** 2989 * Shuts down the device. 2990 * 2991 * @param confirm If true, shows a shutdown confirmation dialog. 2992 * @param wait If true, this call waits for the shutdown to complete and does not return. 2993 */ 2994 @Override // Binder call 2995 public void shutdown(boolean confirm, boolean wait) { 2996 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2997 2998 final long ident = Binder.clearCallingIdentity(); 2999 try { 3000 shutdownOrRebootInternal(true, confirm, null, wait); 3001 } finally { 3002 Binder.restoreCallingIdentity(ident); 3003 } 3004 } 3005 3006 /** 3007 * Crash the runtime (causing a complete restart of the Android framework). 3008 * Requires REBOOT permission. Mostly for testing. Should not return. 3009 */ 3010 @Override // Binder call 3011 public void crash(String message) { 3012 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 3013 3014 final long ident = Binder.clearCallingIdentity(); 3015 try { 3016 crashInternal(message); 3017 } finally { 3018 Binder.restoreCallingIdentity(ident); 3019 } 3020 } 3021 3022 /** 3023 * Set the setting that determines whether the device stays on when plugged in. 3024 * The argument is a bit string, with each bit specifying a power source that, 3025 * when the device is connected to that source, causes the device to stay on. 3026 * See {@link android.os.BatteryManager} for the list of power sources that 3027 * can be specified. Current values include 3028 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 3029 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 3030 * 3031 * Used by "adb shell svc power stayon ..." 3032 * 3033 * @param val an {@code int} containing the bits that specify which power sources 3034 * should cause the device to stay on. 3035 */ 3036 @Override // Binder call 3037 public void setStayOnSetting(int val) { 3038 mContext.enforceCallingOrSelfPermission( 3039 android.Manifest.permission.WRITE_SETTINGS, null); 3040 3041 final long ident = Binder.clearCallingIdentity(); 3042 try { 3043 setStayOnSettingInternal(val); 3044 } finally { 3045 Binder.restoreCallingIdentity(ident); 3046 } 3047 } 3048 3049 /** 3050 * Used by device administration to set the maximum screen off timeout. 3051 * 3052 * This method must only be called by the device administration policy manager. 3053 */ 3054 @Override // Binder call 3055 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 3056 final long ident = Binder.clearCallingIdentity(); 3057 try { 3058 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 3059 } finally { 3060 Binder.restoreCallingIdentity(ident); 3061 } 3062 } 3063 3064 /** 3065 * Used by the settings application and brightness control widgets to 3066 * temporarily override the current screen brightness setting so that the 3067 * user can observe the effect of an intended settings change without applying 3068 * it immediately. 3069 * 3070 * The override will be canceled when the setting value is next updated. 3071 * 3072 * @param brightness The overridden brightness. 3073 * 3074 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 3075 */ 3076 @Override // Binder call 3077 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 3078 mContext.enforceCallingOrSelfPermission( 3079 android.Manifest.permission.DEVICE_POWER, null); 3080 3081 final long ident = Binder.clearCallingIdentity(); 3082 try { 3083 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 3084 } finally { 3085 Binder.restoreCallingIdentity(ident); 3086 } 3087 } 3088 3089 /** 3090 * Used by the settings application and brightness control widgets to 3091 * temporarily override the current screen auto-brightness adjustment setting so that the 3092 * user can observe the effect of an intended settings change without applying 3093 * it immediately. 3094 * 3095 * The override will be canceled when the setting value is next updated. 3096 * 3097 * @param adj The overridden brightness, or Float.NaN to disable the override. 3098 * 3099 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 3100 */ 3101 @Override // Binder call 3102 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 3103 mContext.enforceCallingOrSelfPermission( 3104 android.Manifest.permission.DEVICE_POWER, null); 3105 3106 final long ident = Binder.clearCallingIdentity(); 3107 try { 3108 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 3109 } finally { 3110 Binder.restoreCallingIdentity(ident); 3111 } 3112 } 3113 3114 /** 3115 * Used by the phone application to make the attention LED flash when ringing. 3116 */ 3117 @Override // Binder call 3118 public void setAttentionLight(boolean on, int color) { 3119 mContext.enforceCallingOrSelfPermission( 3120 android.Manifest.permission.DEVICE_POWER, null); 3121 3122 final long ident = Binder.clearCallingIdentity(); 3123 try { 3124 setAttentionLightInternal(on, color); 3125 } finally { 3126 Binder.restoreCallingIdentity(ident); 3127 } 3128 } 3129 3130 @Override // Binder call 3131 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3132 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 3133 != PackageManager.PERMISSION_GRANTED) { 3134 pw.println("Permission Denial: can't dump PowerManager from from pid=" 3135 + Binder.getCallingPid() 3136 + ", uid=" + Binder.getCallingUid()); 3137 return; 3138 } 3139 3140 final long ident = Binder.clearCallingIdentity(); 3141 try { 3142 dumpInternal(pw); 3143 } finally { 3144 Binder.restoreCallingIdentity(ident); 3145 } 3146 } 3147 } 3148 3149 private final class LocalService extends PowerManagerInternal { 3150 @Override 3151 public void setScreenBrightnessOverrideFromWindowManager(int screenBrightness) { 3152 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3153 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3154 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3155 } 3156 setScreenBrightnessOverrideFromWindowManagerInternal(screenBrightness); 3157 } 3158 3159 @Override 3160 public void setButtonBrightnessOverrideFromWindowManager(int screenBrightness) { 3161 // Do nothing. 3162 // Button lights are not currently supported in the new implementation. 3163 } 3164 3165 @Override 3166 public void setDozeOverrideFromDreamManager(int screenState, int screenBrightness) { 3167 switch (screenState) { 3168 case Display.STATE_UNKNOWN: 3169 case Display.STATE_OFF: 3170 case Display.STATE_DOZE: 3171 case Display.STATE_DOZE_SUSPEND: 3172 case Display.STATE_ON: 3173 break; 3174 default: 3175 screenState = Display.STATE_UNKNOWN; 3176 break; 3177 } 3178 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3179 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3180 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3181 } 3182 setDozeOverrideFromDreamManagerInternal(screenState, screenBrightness); 3183 } 3184 3185 @Override 3186 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 3187 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 3188 } 3189 3190 @Override 3191 public boolean getLowPowerModeEnabled() { 3192 synchronized (mLock) { 3193 return mLowPowerModeEnabled; 3194 } 3195 } 3196 3197 @Override 3198 public void registerLowPowerModeObserver(LowPowerModeListener listener) { 3199 synchronized (mLock) { 3200 mLowPowerModeListeners.add(listener); 3201 } 3202 } 3203 } 3204} 3205