PowerManagerService.java revision 970d4132ea28e748c1010be39450a98bbf7466f3
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.power; 18 19import com.android.internal.app.IAppOpsService; 20import com.android.internal.app.IBatteryStats; 21import com.android.internal.os.BackgroundThread; 22import com.android.server.EventLogTags; 23import com.android.server.LocalServices; 24import com.android.server.ServiceThread; 25import com.android.server.am.BatteryStatsService; 26import com.android.server.lights.Light; 27import com.android.server.lights.LightsManager; 28import com.android.server.Watchdog; 29 30import android.Manifest; 31import android.content.BroadcastReceiver; 32import android.content.ContentResolver; 33import android.content.Context; 34import android.content.Intent; 35import android.content.IntentFilter; 36import android.content.pm.PackageManager; 37import android.content.res.Resources; 38import android.database.ContentObserver; 39import android.hardware.SensorManager; 40import android.hardware.SystemSensorManager; 41import android.hardware.display.DisplayManagerInternal; 42import android.hardware.display.DisplayManagerInternal.DisplayPowerRequest; 43import android.net.Uri; 44import android.os.BatteryManager; 45import android.os.BatteryManagerInternal; 46import android.os.Binder; 47import android.os.Handler; 48import android.os.IBinder; 49import android.os.IPowerManager; 50import android.os.Looper; 51import android.os.Message; 52import android.os.PowerManager; 53import android.os.PowerManagerInternal; 54import android.os.Process; 55import android.os.RemoteException; 56import android.os.SystemClock; 57import android.os.SystemProperties; 58import android.os.SystemService; 59import android.os.UserHandle; 60import android.os.WorkSource; 61import android.os.Parcel; 62import android.os.ServiceManager; 63import android.provider.Settings; 64import android.service.dreams.DreamManagerInternal; 65import android.util.EventLog; 66import android.util.Log; 67import android.util.Slog; 68import android.util.TimeUtils; 69import android.view.Display; 70import android.view.WindowManagerPolicy; 71 72import java.io.FileDescriptor; 73import java.io.PrintWriter; 74import java.util.ArrayList; 75 76import libcore.util.Objects; 77 78/** 79 * The power manager service is responsible for coordinating power management 80 * functions on the device. 81 */ 82public final class PowerManagerService extends com.android.server.SystemService 83 implements Watchdog.Monitor { 84 private static final String TAG = "PowerManagerService"; 85 86 private static final boolean DEBUG = false; 87 private static final boolean DEBUG_SPEW = DEBUG && true; 88 89 // Message: Sent when a user activity timeout occurs to update the power state. 90 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 91 // Message: Sent when the device enters or exits a dreaming or dozing state. 92 private static final int MSG_SANDMAN = 2; 93 // Message: Sent when the screen on blocker is released. 94 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 95 // Message: Sent to poll whether the boot animation has terminated. 96 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 97 98 // Dirty bit: mWakeLocks changed 99 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 100 // Dirty bit: mWakefulness changed 101 private static final int DIRTY_WAKEFULNESS = 1 << 1; 102 // Dirty bit: user activity was poked or may have timed out 103 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 104 // Dirty bit: actual display power state was updated asynchronously 105 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 106 // Dirty bit: mBootCompleted changed 107 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 108 // Dirty bit: settings changed 109 private static final int DIRTY_SETTINGS = 1 << 5; 110 // Dirty bit: mIsPowered changed 111 private static final int DIRTY_IS_POWERED = 1 << 6; 112 // Dirty bit: mStayOn changed 113 private static final int DIRTY_STAY_ON = 1 << 7; 114 // Dirty bit: battery state changed 115 private static final int DIRTY_BATTERY_STATE = 1 << 8; 116 // Dirty bit: proximity state changed 117 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 118 // Dirty bit: screen on blocker state became held or unheld 119 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 120 // Dirty bit: dock state changed 121 private static final int DIRTY_DOCK_STATE = 1 << 11; 122 123 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 124 // The screen should be off or in the process of being turned off by the display controller. 125 // The device typically passes through the dozing state first. 126 private static final int WAKEFULNESS_ASLEEP = 0; 127 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 128 // When the user activity timeout expires, the device may start dreaming or go to sleep. 129 private static final int WAKEFULNESS_AWAKE = 1; 130 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 131 // which ends the dream. The device goes to sleep when goToSleep() is called, when 132 // the dream ends or when unplugged. 133 // User activity may brighten the screen but does not end the dream. 134 private static final int WAKEFULNESS_DREAMING = 2; 135 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 136 // low-power "doze" dream to run which keeps the display on but lets the application 137 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 138 // The device fully goes to sleep if the dream cannot be started or ends on its own. 139 private static final int WAKEFULNESS_DOZING = 3; 140 141 // Summarizes the state of all active wakelocks. 142 private static final int WAKE_LOCK_CPU = 1 << 0; 143 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 144 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 145 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 146 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 147 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 148 private static final int WAKE_LOCK_DOZE = 1 << 6; 149 150 // Summarizes the user activity state. 151 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 152 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 153 154 // Default timeout in milliseconds. This is only used until the settings 155 // provider populates the actual default value (R.integer.def_screen_off_timeout). 156 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 157 158 // The name of the boot animation service in init.rc. 159 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 160 161 // Poll interval in milliseconds for watching boot animation finished. 162 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 163 164 // Used to send the hint to the PowerHAL indicating transitions 165 // from and to the low power mode. 166 private static final int POWER_HINT_LOW_POWER_MODE = 5; 167 168 private final Context mContext; 169 private final ServiceThread mHandlerThread; 170 private final PowerManagerHandler mHandler; 171 172 private LightsManager mLightsManager; 173 private BatteryManagerInternal mBatteryManagerInternal; 174 private DisplayManagerInternal mDisplayManagerInternal; 175 private IBatteryStats mBatteryStats; 176 private IAppOpsService mAppOps; 177 private WindowManagerPolicy mPolicy; 178 private Notifier mNotifier; 179 private WirelessChargerDetector mWirelessChargerDetector; 180 private SettingsObserver mSettingsObserver; 181 private DreamManagerInternal mDreamManager; 182 private Light mAttentionLight; 183 184 private final Object mLock = new Object(); 185 186 // A bitfield that indicates what parts of the power state have 187 // changed and need to be recalculated. 188 private int mDirty; 189 190 // Indicates whether the device is awake or asleep or somewhere in between. 191 // This is distinct from the screen power state, which is managed separately. 192 private int mWakefulness; 193 194 // True if the sandman has just been summoned for the first time since entering the 195 // dreaming or dozing state. Indicates whether a new dream should begin. 196 private boolean mSandmanSummoned; 197 198 // True if MSG_SANDMAN has been scheduled. 199 private boolean mSandmanScheduled; 200 201 // Table of all suspend blockers. 202 // There should only be a few of these. 203 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 204 205 // Table of all wake locks acquired by applications. 206 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 207 208 // A bitfield that summarizes the state of all active wakelocks. 209 private int mWakeLockSummary; 210 211 // True if the device is in an interactive state. 212 private boolean mInteractive; 213 private boolean mInteractiveChanging; 214 215 // If true, instructs the display controller to wait for the proximity sensor to 216 // go negative before turning the screen on. 217 private boolean mRequestWaitForNegativeProximity; 218 219 // Timestamp of the last time the device was awoken or put to sleep. 220 private long mLastWakeTime; 221 private long mLastSleepTime; 222 223 // Timestamp of the last call to user activity. 224 private long mLastUserActivityTime; 225 private long mLastUserActivityTimeNoChangeLights; 226 227 // A bitfield that summarizes the effect of the user activity timer. 228 // A zero value indicates that the user activity timer has expired. 229 private int mUserActivitySummary; 230 231 // The desired display power state. The actual state may lag behind the 232 // requested because it is updated asynchronously by the display power controller. 233 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 234 235 // True if the display power state has been fully applied, which means the display 236 // is actually on or actually off or whatever was requested. 237 private boolean mDisplayReady; 238 239 // The suspend blocker used to keep the CPU alive when an application has acquired 240 // a wake lock. 241 private final SuspendBlocker mWakeLockSuspendBlocker; 242 243 // True if the wake lock suspend blocker has been acquired. 244 private boolean mHoldingWakeLockSuspendBlocker; 245 246 // The suspend blocker used to keep the CPU alive when the display is on, the 247 // display is getting ready or there is user activity (in which case the display 248 // must be on). 249 private final SuspendBlocker mDisplaySuspendBlocker; 250 251 // True if the display suspend blocker has been acquired. 252 private boolean mHoldingDisplaySuspendBlocker; 253 254 // The screen on blocker used to keep the screen from turning on while the lock 255 // screen is coming up. 256 private final ScreenOnBlockerImpl mScreenOnBlocker; 257 258 // True if systemReady() has been called. 259 private boolean mSystemReady; 260 261 // True if boot completed occurred. We keep the screen on until this happens. 262 private boolean mBootCompleted; 263 264 // True if auto-suspend mode is enabled. 265 // Refer to autosuspend.h. 266 private boolean mHalAutoSuspendModeEnabled; 267 268 // True if interactive mode is enabled. 269 // Refer to power.h. 270 private boolean mHalInteractiveModeEnabled; 271 272 // True if the device is plugged into a power source. 273 private boolean mIsPowered; 274 275 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 276 private int mPlugType; 277 278 // The current battery level percentage. 279 private int mBatteryLevel; 280 281 // The battery level percentage at the time the dream started. 282 // This is used to terminate a dream and go to sleep if the battery is 283 // draining faster than it is charging and the user activity timeout has expired. 284 private int mBatteryLevelWhenDreamStarted; 285 286 // The current dock state. 287 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 288 289 // True to decouple auto-suspend mode from the display state. 290 private boolean mDecoupleHalAutoSuspendModeFromDisplayConfig; 291 292 // True to decouple interactive mode from the display state. 293 private boolean mDecoupleHalInteractiveModeFromDisplayConfig; 294 295 // True if the device should wake up when plugged or unplugged. 296 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 297 298 // True if the device should suspend when the screen is off due to proximity. 299 private boolean mSuspendWhenScreenOffDueToProximityConfig; 300 301 // True if dreams are supported on this device. 302 private boolean mDreamsSupportedConfig; 303 304 // Default value for dreams enabled 305 private boolean mDreamsEnabledByDefaultConfig; 306 307 // Default value for dreams activate-on-sleep 308 private boolean mDreamsActivatedOnSleepByDefaultConfig; 309 310 // Default value for dreams activate-on-dock 311 private boolean mDreamsActivatedOnDockByDefaultConfig; 312 313 // True if dreams can run while not plugged in. 314 private boolean mDreamsEnabledOnBatteryConfig; 315 316 // Minimum battery level to allow dreaming when powered. 317 // Use -1 to disable this safety feature. 318 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 319 320 // Minimum battery level to allow dreaming when not powered. 321 // Use -1 to disable this safety feature. 322 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 323 324 // If the battery level drops by this percentage and the user activity timeout 325 // has expired, then assume the device is receiving insufficient current to charge 326 // effectively and terminate the dream. Use -1 to disable this safety feature. 327 private int mDreamsBatteryLevelDrainCutoffConfig; 328 329 // True if dreams are enabled by the user. 330 private boolean mDreamsEnabledSetting; 331 332 // True if dreams should be activated on sleep. 333 private boolean mDreamsActivateOnSleepSetting; 334 335 // True if dreams should be activated on dock. 336 private boolean mDreamsActivateOnDockSetting; 337 338 // The minimum screen off timeout, in milliseconds. 339 private int mMinimumScreenOffTimeoutConfig; 340 341 // The screen dim duration, in milliseconds. 342 // This is subtracted from the end of the screen off timeout so the 343 // minimum screen off timeout should be longer than this. 344 private int mMaximumScreenDimDurationConfig; 345 346 // The maximum screen dim time expressed as a ratio relative to the screen 347 // off timeout. If the screen off timeout is very short then we want the 348 // dim timeout to also be quite short so that most of the time is spent on. 349 // Otherwise the user won't get much screen on time before dimming occurs. 350 private float mMaximumScreenDimRatioConfig; 351 352 // The screen off timeout setting value in milliseconds. 353 private int mScreenOffTimeoutSetting; 354 355 // The maximum allowable screen off timeout according to the device 356 // administration policy. Overrides other settings. 357 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 358 359 // The stay on while plugged in setting. 360 // A bitfield of battery conditions under which to make the screen stay on. 361 private int mStayOnWhilePluggedInSetting; 362 363 // True if the device should stay on. 364 private boolean mStayOn; 365 366 // True if the proximity sensor reads a positive result. 367 private boolean mProximityPositive; 368 369 // Screen brightness setting limits. 370 private int mScreenBrightnessSettingMinimum; 371 private int mScreenBrightnessSettingMaximum; 372 private int mScreenBrightnessSettingDefault; 373 374 // The screen brightness setting, from 0 to 255. 375 // Use -1 if no value has been set. 376 private int mScreenBrightnessSetting; 377 378 // The screen auto-brightness adjustment setting, from -1 to 1. 379 // Use 0 if there is no adjustment. 380 private float mScreenAutoBrightnessAdjustmentSetting; 381 382 // The screen brightness mode. 383 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 384 private int mScreenBrightnessModeSetting; 385 386 // The screen brightness setting override from the window manager 387 // to allow the current foreground activity to override the brightness. 388 // Use -1 to disable. 389 private int mScreenBrightnessOverrideFromWindowManager = -1; 390 391 // The user activity timeout override from the window manager 392 // to allow the current foreground activity to override the user activity timeout. 393 // Use -1 to disable. 394 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 395 396 // The screen brightness setting override from the settings application 397 // to temporarily adjust the brightness until next updated, 398 // Use -1 to disable. 399 private int mTemporaryScreenBrightnessSettingOverride = -1; 400 401 // The screen brightness adjustment setting override from the settings 402 // application to temporarily adjust the auto-brightness adjustment factor 403 // until next updated, in the range -1..1. 404 // Use NaN to disable. 405 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 406 407 // The screen state to use while dozing. 408 private int mDozeScreenStateOverrideFromDreamManager = Display.STATE_UNKNOWN; 409 410 // The screen brightness to use while dozing. 411 private int mDozeScreenBrightnessOverrideFromDreamManager = PowerManager.BRIGHTNESS_DEFAULT; 412 413 // Time when we last logged a warning about calling userActivity() without permission. 414 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 415 416 // If true, the device is in low power mode. 417 private boolean mLowPowerModeEnabled; 418 419 // Current state of the low power mode setting. 420 private boolean mLowPowerModeSetting; 421 422 // Current state of whether the settings are allowing auto low power mode. 423 private boolean mAutoLowPowerModeEnabled; 424 425 // True if the battery level is currently considered low. 426 private boolean mBatteryLevelLow; 427 428 private final ArrayList<PowerManagerInternal.LowPowerModeListener> mLowPowerModeListeners 429 = new ArrayList<PowerManagerInternal.LowPowerModeListener>(); 430 431 private native void nativeInit(); 432 433 private static native void nativeAcquireSuspendBlocker(String name); 434 private static native void nativeReleaseSuspendBlocker(String name); 435 private static native void nativeSetInteractive(boolean enable); 436 private static native void nativeSetAutoSuspend(boolean enable); 437 private static native void nativeSendPowerHint(int hintId, int data); 438 439 public PowerManagerService(Context context) { 440 super(context); 441 mContext = context; 442 mHandlerThread = new ServiceThread(TAG, 443 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 444 mHandlerThread.start(); 445 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 446 447 synchronized (mLock) { 448 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 449 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 450 mDisplaySuspendBlocker.acquire(); 451 mHoldingDisplaySuspendBlocker = true; 452 mHalAutoSuspendModeEnabled = false; 453 mHalInteractiveModeEnabled = true; 454 455 mScreenOnBlocker = new ScreenOnBlockerImpl(); 456 mWakefulness = WAKEFULNESS_AWAKE; 457 mInteractive = true; 458 459 nativeInit(); 460 nativeSetAutoSuspend(false); 461 nativeSetInteractive(true); 462 } 463 } 464 465 @Override 466 public void onStart() { 467 publishBinderService(Context.POWER_SERVICE, new BinderService()); 468 publishLocalService(PowerManagerInternal.class, new LocalService()); 469 470 Watchdog.getInstance().addMonitor(this); 471 Watchdog.getInstance().addThread(mHandler); 472 } 473 474 public void systemReady(IAppOpsService appOps) { 475 synchronized (mLock) { 476 mSystemReady = true; 477 mAppOps = appOps; 478 mDreamManager = getLocalService(DreamManagerInternal.class); 479 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 480 mPolicy = getLocalService(WindowManagerPolicy.class); 481 mBatteryManagerInternal = getLocalService(BatteryManagerInternal.class); 482 483 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 484 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 485 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 486 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 487 488 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 489 490 // The notifier runs on the system server's main looper so as not to interfere 491 // with the animations and other critical functions of the power manager. 492 mBatteryStats = BatteryStatsService.getService(); 493 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 494 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 495 mScreenOnBlocker, mPolicy); 496 497 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 498 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 499 mHandler); 500 mSettingsObserver = new SettingsObserver(mHandler); 501 502 mLightsManager = getLocalService(LightsManager.class); 503 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 504 505 // Initialize display power management. 506 mDisplayManagerInternal.initPowerManagement( 507 mDisplayPowerCallbacks, mHandler, sensorManager); 508 509 // Register for broadcasts from other components of the system. 510 IntentFilter filter = new IntentFilter(); 511 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 512 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 513 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 514 515 filter = new IntentFilter(); 516 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 517 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 518 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 519 520 filter = new IntentFilter(); 521 filter.addAction(Intent.ACTION_DREAMING_STARTED); 522 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 523 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 524 525 filter = new IntentFilter(); 526 filter.addAction(Intent.ACTION_USER_SWITCHED); 527 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 528 529 filter = new IntentFilter(); 530 filter.addAction(Intent.ACTION_DOCK_EVENT); 531 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 532 533 // Register for settings changes. 534 final ContentResolver resolver = mContext.getContentResolver(); 535 resolver.registerContentObserver(Settings.Secure.getUriFor( 536 Settings.Secure.SCREENSAVER_ENABLED), 537 false, mSettingsObserver, UserHandle.USER_ALL); 538 resolver.registerContentObserver(Settings.Secure.getUriFor( 539 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 540 false, mSettingsObserver, UserHandle.USER_ALL); 541 resolver.registerContentObserver(Settings.Secure.getUriFor( 542 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 543 false, mSettingsObserver, UserHandle.USER_ALL); 544 resolver.registerContentObserver(Settings.System.getUriFor( 545 Settings.System.SCREEN_OFF_TIMEOUT), 546 false, mSettingsObserver, UserHandle.USER_ALL); 547 resolver.registerContentObserver(Settings.Global.getUriFor( 548 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 549 false, mSettingsObserver, UserHandle.USER_ALL); 550 resolver.registerContentObserver(Settings.System.getUriFor( 551 Settings.System.SCREEN_BRIGHTNESS), 552 false, mSettingsObserver, UserHandle.USER_ALL); 553 resolver.registerContentObserver(Settings.System.getUriFor( 554 Settings.System.SCREEN_BRIGHTNESS_MODE), 555 false, mSettingsObserver, UserHandle.USER_ALL); 556 resolver.registerContentObserver(Settings.System.getUriFor( 557 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ), 558 false, mSettingsObserver, UserHandle.USER_ALL); 559 resolver.registerContentObserver(Settings.Global.getUriFor( 560 Settings.Global.LOW_POWER_MODE), 561 false, mSettingsObserver, UserHandle.USER_ALL); 562 resolver.registerContentObserver(Settings.Global.getUriFor( 563 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL), 564 false, mSettingsObserver, UserHandle.USER_ALL); 565 // Go. 566 readConfigurationLocked(); 567 updateSettingsLocked(); 568 mDirty |= DIRTY_BATTERY_STATE; 569 updatePowerStateLocked(); 570 } 571 } 572 573 private void readConfigurationLocked() { 574 final Resources resources = mContext.getResources(); 575 576 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 577 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 578 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 579 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 580 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 581 com.android.internal.R.bool.config_unplugTurnsOnScreen); 582 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 583 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 584 mDreamsSupportedConfig = resources.getBoolean( 585 com.android.internal.R.bool.config_dreamsSupported); 586 mDreamsEnabledByDefaultConfig = resources.getBoolean( 587 com.android.internal.R.bool.config_dreamsEnabledByDefault); 588 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 589 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 590 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 591 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 592 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 593 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 594 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 595 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 596 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 597 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 598 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 599 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 600 mMinimumScreenOffTimeoutConfig = resources.getInteger( 601 com.android.internal.R.integer.config_minimumScreenOffTimeout); 602 mMaximumScreenDimDurationConfig = resources.getInteger( 603 com.android.internal.R.integer.config_maximumScreenDimDuration); 604 mMaximumScreenDimRatioConfig = resources.getFraction( 605 com.android.internal.R.fraction.config_maximumScreenDimRatio, 1, 1); 606 } 607 608 private void updateSettingsLocked() { 609 final ContentResolver resolver = mContext.getContentResolver(); 610 611 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 612 Settings.Secure.SCREENSAVER_ENABLED, 613 mDreamsEnabledByDefaultConfig ? 1 : 0, 614 UserHandle.USER_CURRENT) != 0); 615 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 616 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 617 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 618 UserHandle.USER_CURRENT) != 0); 619 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 620 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 621 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 622 UserHandle.USER_CURRENT) != 0); 623 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 624 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 625 UserHandle.USER_CURRENT); 626 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 627 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 628 629 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 630 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 631 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 632 UserHandle.USER_CURRENT); 633 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 634 mTemporaryScreenBrightnessSettingOverride = -1; 635 } 636 637 final float oldScreenAutoBrightnessAdjustmentSetting = 638 mScreenAutoBrightnessAdjustmentSetting; 639 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 640 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 641 UserHandle.USER_CURRENT); 642 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 643 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 644 } 645 646 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 647 Settings.System.SCREEN_BRIGHTNESS_MODE, 648 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 649 650 final boolean lowPowerModeEnabled = Settings.Global.getInt(resolver, 651 Settings.Global.LOW_POWER_MODE, 0) != 0; 652 final boolean autoLowPowerModeEnabled = Settings.Global.getInt(resolver, 653 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL, 15) != 0; 654 if (lowPowerModeEnabled != mLowPowerModeSetting 655 || autoLowPowerModeEnabled != mAutoLowPowerModeEnabled) { 656 mLowPowerModeSetting = lowPowerModeEnabled; 657 mAutoLowPowerModeEnabled = autoLowPowerModeEnabled; 658 updateLowPowerModeLocked(); 659 } 660 661 mDirty |= DIRTY_SETTINGS; 662 } 663 664 void updateLowPowerModeLocked() { 665 final boolean lowPowerModeEnabled = !mIsPowered 666 && (mLowPowerModeSetting || (mAutoLowPowerModeEnabled && mBatteryLevelLow)); 667 if (mLowPowerModeEnabled != lowPowerModeEnabled) { 668 mLowPowerModeEnabled = lowPowerModeEnabled; 669 powerHintInternal(POWER_HINT_LOW_POWER_MODE, lowPowerModeEnabled ? 1 : 0); 670 setSurfaceFlingerLowPowerMode(lowPowerModeEnabled ? 1 : 0); 671 mLowPowerModeEnabled = lowPowerModeEnabled; 672 BackgroundThread.getHandler().post(new Runnable() { 673 @Override 674 public void run() { 675 ArrayList<PowerManagerInternal.LowPowerModeListener> listeners; 676 synchronized (mLock) { 677 listeners = new ArrayList<PowerManagerInternal.LowPowerModeListener>( 678 mLowPowerModeListeners); 679 } 680 for (int i=0; i<listeners.size(); i++) { 681 listeners.get(i).onLowPowerModeChanged(lowPowerModeEnabled); 682 } 683 Intent intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED); 684 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 685 mContext.sendBroadcast(intent); 686 } 687 }); 688 } 689 } 690 691 private void handleSettingsChangedLocked() { 692 updateSettingsLocked(); 693 updatePowerStateLocked(); 694 } 695 696 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 697 WorkSource ws, String historyTag, int uid, int pid) { 698 synchronized (mLock) { 699 if (DEBUG_SPEW) { 700 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 701 + ", flags=0x" + Integer.toHexString(flags) 702 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 703 } 704 705 WakeLock wakeLock; 706 int index = findWakeLockIndexLocked(lock); 707 boolean notifyAcquire; 708 if (index >= 0) { 709 wakeLock = mWakeLocks.get(index); 710 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 711 // Update existing wake lock. This shouldn't happen but is harmless. 712 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 713 uid, pid, ws, historyTag); 714 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 715 } 716 notifyAcquire = false; 717 } else { 718 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 719 try { 720 lock.linkToDeath(wakeLock, 0); 721 } catch (RemoteException ex) { 722 throw new IllegalArgumentException("Wake lock is already dead."); 723 } 724 mWakeLocks.add(wakeLock); 725 notifyAcquire = true; 726 } 727 728 applyWakeLockFlagsOnAcquireLocked(wakeLock); 729 mDirty |= DIRTY_WAKE_LOCKS; 730 updatePowerStateLocked(); 731 if (notifyAcquire) { 732 // This needs to be done last so we are sure we have acquired the 733 // kernel wake lock. Otherwise we have a race where the system may 734 // go to sleep between the time we start the accounting in battery 735 // stats and when we actually get around to telling the kernel to 736 // stay awake. 737 notifyWakeLockAcquiredLocked(wakeLock); 738 } 739 } 740 } 741 742 @SuppressWarnings("deprecation") 743 private static boolean isScreenLock(final WakeLock wakeLock) { 744 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 745 case PowerManager.FULL_WAKE_LOCK: 746 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 747 case PowerManager.SCREEN_DIM_WAKE_LOCK: 748 return true; 749 } 750 return false; 751 } 752 753 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 754 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 755 && isScreenLock(wakeLock)) { 756 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 757 } 758 } 759 760 private void releaseWakeLockInternal(IBinder lock, int flags) { 761 synchronized (mLock) { 762 int index = findWakeLockIndexLocked(lock); 763 if (index < 0) { 764 if (DEBUG_SPEW) { 765 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 766 + " [not found], flags=0x" + Integer.toHexString(flags)); 767 } 768 return; 769 } 770 771 WakeLock wakeLock = mWakeLocks.get(index); 772 if (DEBUG_SPEW) { 773 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 774 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 775 } 776 777 mWakeLocks.remove(index); 778 notifyWakeLockReleasedLocked(wakeLock); 779 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 780 781 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 782 mRequestWaitForNegativeProximity = true; 783 } 784 785 applyWakeLockFlagsOnReleaseLocked(wakeLock); 786 mDirty |= DIRTY_WAKE_LOCKS; 787 updatePowerStateLocked(); 788 } 789 } 790 791 private void handleWakeLockDeath(WakeLock wakeLock) { 792 synchronized (mLock) { 793 if (DEBUG_SPEW) { 794 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 795 + " [" + wakeLock.mTag + "]"); 796 } 797 798 int index = mWakeLocks.indexOf(wakeLock); 799 if (index < 0) { 800 return; 801 } 802 803 mWakeLocks.remove(index); 804 notifyWakeLockReleasedLocked(wakeLock); 805 806 applyWakeLockFlagsOnReleaseLocked(wakeLock); 807 mDirty |= DIRTY_WAKE_LOCKS; 808 updatePowerStateLocked(); 809 } 810 } 811 812 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 813 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 814 && isScreenLock(wakeLock)) { 815 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 816 PowerManager.USER_ACTIVITY_EVENT_OTHER, 817 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 818 wakeLock.mOwnerUid); 819 } 820 } 821 822 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag) { 823 synchronized (mLock) { 824 int index = findWakeLockIndexLocked(lock); 825 if (index < 0) { 826 if (DEBUG_SPEW) { 827 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 828 + " [not found], ws=" + ws); 829 } 830 throw new IllegalArgumentException("Wake lock not active"); 831 } 832 833 WakeLock wakeLock = mWakeLocks.get(index); 834 if (DEBUG_SPEW) { 835 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 836 + " [" + wakeLock.mTag + "], ws=" + ws); 837 } 838 839 if (!wakeLock.hasSameWorkSource(ws)) { 840 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 841 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 842 ws, historyTag); 843 wakeLock.mHistoryTag = historyTag; 844 wakeLock.updateWorkSource(ws); 845 } 846 } 847 } 848 849 private int findWakeLockIndexLocked(IBinder lock) { 850 final int count = mWakeLocks.size(); 851 for (int i = 0; i < count; i++) { 852 if (mWakeLocks.get(i).mLock == lock) { 853 return i; 854 } 855 } 856 return -1; 857 } 858 859 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 860 if (mSystemReady) { 861 wakeLock.mNotifiedAcquired = true; 862 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 863 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 864 wakeLock.mHistoryTag); 865 } 866 } 867 868 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 869 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 870 if (mSystemReady && wakeLock.mNotifiedAcquired) { 871 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 872 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 873 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 874 } 875 } 876 877 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 878 if (mSystemReady && wakeLock.mNotifiedAcquired) { 879 wakeLock.mNotifiedAcquired = false; 880 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, 881 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 882 wakeLock.mWorkSource, wakeLock.mHistoryTag); 883 } 884 } 885 886 @SuppressWarnings("deprecation") 887 private boolean isWakeLockLevelSupportedInternal(int level) { 888 synchronized (mLock) { 889 switch (level) { 890 case PowerManager.PARTIAL_WAKE_LOCK: 891 case PowerManager.SCREEN_DIM_WAKE_LOCK: 892 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 893 case PowerManager.FULL_WAKE_LOCK: 894 case PowerManager.DOZE_WAKE_LOCK: 895 return true; 896 897 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 898 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 899 900 default: 901 return false; 902 } 903 } 904 } 905 906 // Called from native code. 907 private void userActivityFromNative(long eventTime, int event, int flags) { 908 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 909 } 910 911 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 912 synchronized (mLock) { 913 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 914 updatePowerStateLocked(); 915 } 916 } 917 } 918 919 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 920 if (DEBUG_SPEW) { 921 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 922 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 923 + ", uid=" + uid); 924 } 925 926 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 927 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 928 || !mBootCompleted || !mSystemReady) { 929 return false; 930 } 931 932 mNotifier.onUserActivity(event, uid); 933 934 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 935 if (eventTime > mLastUserActivityTimeNoChangeLights 936 && eventTime > mLastUserActivityTime) { 937 mLastUserActivityTimeNoChangeLights = eventTime; 938 mDirty |= DIRTY_USER_ACTIVITY; 939 return true; 940 } 941 } else { 942 if (eventTime > mLastUserActivityTime) { 943 mLastUserActivityTime = eventTime; 944 mDirty |= DIRTY_USER_ACTIVITY; 945 return true; 946 } 947 } 948 return false; 949 } 950 951 private void wakeUpInternal(long eventTime) { 952 synchronized (mLock) { 953 if (wakeUpNoUpdateLocked(eventTime)) { 954 updatePowerStateLocked(); 955 } 956 } 957 } 958 959 private boolean wakeUpNoUpdateLocked(long eventTime) { 960 if (DEBUG_SPEW) { 961 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 962 } 963 964 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 965 || !mBootCompleted || !mSystemReady) { 966 return false; 967 } 968 969 switch (mWakefulness) { 970 case WAKEFULNESS_ASLEEP: 971 Slog.i(TAG, "Waking up from sleep..."); 972 break; 973 case WAKEFULNESS_DREAMING: 974 Slog.i(TAG, "Waking up from dream..."); 975 break; 976 case WAKEFULNESS_DOZING: 977 Slog.i(TAG, "Waking up from dozing..."); 978 break; 979 } 980 981 mLastWakeTime = eventTime; 982 mDirty |= DIRTY_WAKEFULNESS; 983 mWakefulness = WAKEFULNESS_AWAKE; 984 setInteractiveStateLocked(true, 0); 985 986 userActivityNoUpdateLocked( 987 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 988 return true; 989 } 990 991 private void goToSleepInternal(long eventTime, int reason, int flags) { 992 synchronized (mLock) { 993 if (goToSleepNoUpdateLocked(eventTime, reason, flags)) { 994 updatePowerStateLocked(); 995 } 996 } 997 } 998 999 // This method is called goToSleep for historical reasons but we actually start 1000 // dozing before really going to sleep. 1001 @SuppressWarnings("deprecation") 1002 private boolean goToSleepNoUpdateLocked(long eventTime, int reason, int flags) { 1003 if (DEBUG_SPEW) { 1004 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime 1005 + ", reason=" + reason + ", flags=" + flags); 1006 } 1007 1008 if (eventTime < mLastWakeTime 1009 || mWakefulness == WAKEFULNESS_ASLEEP 1010 || mWakefulness == WAKEFULNESS_DOZING 1011 || !mBootCompleted || !mSystemReady) { 1012 return false; 1013 } 1014 1015 switch (reason) { 1016 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 1017 Slog.i(TAG, "Going to sleep due to device administration policy..."); 1018 break; 1019 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 1020 Slog.i(TAG, "Going to sleep due to screen timeout..."); 1021 break; 1022 default: 1023 Slog.i(TAG, "Going to sleep by user request..."); 1024 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 1025 break; 1026 } 1027 1028 mLastSleepTime = eventTime; 1029 mDirty |= DIRTY_WAKEFULNESS; 1030 mWakefulness = WAKEFULNESS_DOZING; 1031 mSandmanSummoned = true; 1032 setInteractiveStateLocked(false, reason); 1033 1034 // Report the number of wake locks that will be cleared by going to sleep. 1035 int numWakeLocksCleared = 0; 1036 final int numWakeLocks = mWakeLocks.size(); 1037 for (int i = 0; i < numWakeLocks; i++) { 1038 final WakeLock wakeLock = mWakeLocks.get(i); 1039 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1040 case PowerManager.FULL_WAKE_LOCK: 1041 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1042 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1043 numWakeLocksCleared += 1; 1044 break; 1045 } 1046 } 1047 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 1048 1049 // Skip dozing if requested. 1050 if ((flags & PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE) != 0) { 1051 reallyGoToSleepNoUpdateLocked(eventTime); 1052 } 1053 return true; 1054 } 1055 1056 private void napInternal(long eventTime) { 1057 synchronized (mLock) { 1058 if (napNoUpdateLocked(eventTime)) { 1059 updatePowerStateLocked(); 1060 } 1061 } 1062 } 1063 1064 private boolean napNoUpdateLocked(long eventTime) { 1065 if (DEBUG_SPEW) { 1066 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 1067 } 1068 1069 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1070 || !mBootCompleted || !mSystemReady) { 1071 return false; 1072 } 1073 1074 Slog.i(TAG, "Nap time..."); 1075 1076 mDirty |= DIRTY_WAKEFULNESS; 1077 mWakefulness = WAKEFULNESS_DREAMING; 1078 mSandmanSummoned = true; 1079 setInteractiveStateLocked(true, 0); 1080 return true; 1081 } 1082 1083 // Done dozing, drop everything and go to sleep. 1084 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 1085 if (DEBUG_SPEW) { 1086 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 1087 } 1088 1089 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1090 || !mBootCompleted || !mSystemReady) { 1091 return false; 1092 } 1093 1094 Slog.i(TAG, "Sleeping..."); 1095 1096 mDirty |= DIRTY_WAKEFULNESS; 1097 mWakefulness = WAKEFULNESS_ASLEEP; 1098 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1099 return true; 1100 } 1101 1102 private void setInteractiveStateLocked(boolean interactive, int reason) { 1103 if (mInteractive != interactive) { 1104 finishInteractiveStateChangeLocked(); 1105 1106 mInteractive = interactive; 1107 mInteractiveChanging = true; 1108 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1109 } 1110 } 1111 1112 private void finishInteractiveStateChangeLocked() { 1113 if (mInteractiveChanging) { 1114 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1115 mInteractiveChanging = false; 1116 } 1117 } 1118 1119 /** 1120 * Updates the global power state based on dirty bits recorded in mDirty. 1121 * 1122 * This is the main function that performs power state transitions. 1123 * We centralize them here so that we can recompute the power state completely 1124 * each time something important changes, and ensure that we do it the same 1125 * way each time. The point is to gather all of the transition logic here. 1126 */ 1127 private void updatePowerStateLocked() { 1128 if (!mSystemReady || mDirty == 0) { 1129 return; 1130 } 1131 if (!Thread.holdsLock(mLock)) { 1132 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1133 } 1134 1135 // Phase 0: Basic state updates. 1136 updateIsPoweredLocked(mDirty); 1137 updateStayOnLocked(mDirty); 1138 1139 // Phase 1: Update wakefulness. 1140 // Loop because the wake lock and user activity computations are influenced 1141 // by changes in wakefulness. 1142 final long now = SystemClock.uptimeMillis(); 1143 int dirtyPhase2 = 0; 1144 for (;;) { 1145 int dirtyPhase1 = mDirty; 1146 dirtyPhase2 |= dirtyPhase1; 1147 mDirty = 0; 1148 1149 updateWakeLockSummaryLocked(dirtyPhase1); 1150 updateUserActivitySummaryLocked(now, dirtyPhase1); 1151 if (!updateWakefulnessLocked(dirtyPhase1)) { 1152 break; 1153 } 1154 } 1155 1156 // Phase 2: Update dreams and display power state. 1157 updateDreamLocked(dirtyPhase2); 1158 updateDisplayPowerStateLocked(dirtyPhase2); 1159 1160 // Phase 3: Send notifications, if needed. 1161 if (mDisplayReady) { 1162 finishInteractiveStateChangeLocked(); 1163 } 1164 1165 // Phase 4: Update suspend blocker. 1166 // Because we might release the last suspend blocker here, we need to make sure 1167 // we finished everything else first! 1168 updateSuspendBlockerLocked(); 1169 } 1170 1171 /** 1172 * Updates the value of mIsPowered. 1173 * Sets DIRTY_IS_POWERED if a change occurred. 1174 */ 1175 private void updateIsPoweredLocked(int dirty) { 1176 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1177 final boolean wasPowered = mIsPowered; 1178 final int oldPlugType = mPlugType; 1179 final boolean oldLevelLow = mBatteryLevelLow; 1180 mIsPowered = mBatteryManagerInternal.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1181 mPlugType = mBatteryManagerInternal.getPlugType(); 1182 mBatteryLevel = mBatteryManagerInternal.getBatteryLevel(); 1183 mBatteryLevelLow = mBatteryManagerInternal.getBatteryLevelLow(); 1184 1185 if (DEBUG_SPEW) { 1186 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1187 + ", mIsPowered=" + mIsPowered 1188 + ", oldPlugType=" + oldPlugType 1189 + ", mPlugType=" + mPlugType 1190 + ", mBatteryLevel=" + mBatteryLevel); 1191 } 1192 1193 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1194 mDirty |= DIRTY_IS_POWERED; 1195 1196 // Update wireless dock detection state. 1197 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1198 mIsPowered, mPlugType, mBatteryLevel); 1199 1200 // Treat plugging and unplugging the devices as a user activity. 1201 // Users find it disconcerting when they plug or unplug the device 1202 // and it shuts off right away. 1203 // Some devices also wake the device when plugged or unplugged because 1204 // they don't have a charging LED. 1205 final long now = SystemClock.uptimeMillis(); 1206 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1207 dockedOnWirelessCharger)) { 1208 wakeUpNoUpdateLocked(now); 1209 } 1210 userActivityNoUpdateLocked( 1211 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1212 1213 // Tell the notifier whether wireless charging has started so that 1214 // it can provide feedback to the user. 1215 if (dockedOnWirelessCharger) { 1216 mNotifier.onWirelessChargingStarted(); 1217 } 1218 } 1219 1220 if (wasPowered != mIsPowered || oldLevelLow != mBatteryLevelLow) { 1221 updateLowPowerModeLocked(); 1222 } 1223 } 1224 } 1225 1226 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1227 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1228 // Don't wake when powered unless configured to do so. 1229 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1230 return false; 1231 } 1232 1233 // Don't wake when undocked from wireless charger. 1234 // See WirelessChargerDetector for justification. 1235 if (wasPowered && !mIsPowered 1236 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1237 return false; 1238 } 1239 1240 // Don't wake when docked on wireless charger unless we are certain of it. 1241 // See WirelessChargerDetector for justification. 1242 if (!wasPowered && mIsPowered 1243 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1244 && !dockedOnWirelessCharger) { 1245 return false; 1246 } 1247 1248 // If already dreaming and becoming powered, then don't wake. 1249 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1250 return false; 1251 } 1252 1253 // Otherwise wake up! 1254 return true; 1255 } 1256 1257 /** 1258 * Updates the value of mStayOn. 1259 * Sets DIRTY_STAY_ON if a change occurred. 1260 */ 1261 private void updateStayOnLocked(int dirty) { 1262 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1263 final boolean wasStayOn = mStayOn; 1264 if (mStayOnWhilePluggedInSetting != 0 1265 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1266 mStayOn = mBatteryManagerInternal.isPowered(mStayOnWhilePluggedInSetting); 1267 } else { 1268 mStayOn = false; 1269 } 1270 1271 if (mStayOn != wasStayOn) { 1272 mDirty |= DIRTY_STAY_ON; 1273 } 1274 } 1275 } 1276 1277 /** 1278 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1279 * Note that most wake-locks are ignored when the system is asleep. 1280 * 1281 * This function must have no other side-effects. 1282 */ 1283 @SuppressWarnings("deprecation") 1284 private void updateWakeLockSummaryLocked(int dirty) { 1285 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1286 mWakeLockSummary = 0; 1287 1288 final int numWakeLocks = mWakeLocks.size(); 1289 for (int i = 0; i < numWakeLocks; i++) { 1290 final WakeLock wakeLock = mWakeLocks.get(i); 1291 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1292 case PowerManager.PARTIAL_WAKE_LOCK: 1293 mWakeLockSummary |= WAKE_LOCK_CPU; 1294 break; 1295 case PowerManager.FULL_WAKE_LOCK: 1296 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1297 break; 1298 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1299 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1300 break; 1301 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1302 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1303 break; 1304 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1305 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1306 break; 1307 case PowerManager.DOZE_WAKE_LOCK: 1308 mWakeLockSummary |= WAKE_LOCK_DOZE; 1309 break; 1310 } 1311 } 1312 1313 // Cancel wake locks that make no sense based on the current state. 1314 if (mWakefulness != WAKEFULNESS_DOZING) { 1315 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1316 } 1317 if (mWakefulness == WAKEFULNESS_ASLEEP 1318 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1319 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1320 | WAKE_LOCK_BUTTON_BRIGHT); 1321 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1322 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1323 } 1324 } 1325 1326 // Infer implied wake locks where necessary based on the current state. 1327 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1328 if (mWakefulness == WAKEFULNESS_AWAKE) { 1329 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1330 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1331 mWakeLockSummary |= WAKE_LOCK_CPU; 1332 } 1333 } 1334 1335 if (DEBUG_SPEW) { 1336 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1337 + wakefulnessToString(mWakefulness) 1338 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1339 } 1340 } 1341 } 1342 1343 /** 1344 * Updates the value of mUserActivitySummary to summarize the user requested 1345 * state of the system such as whether the screen should be bright or dim. 1346 * Note that user activity is ignored when the system is asleep. 1347 * 1348 * This function must have no other side-effects. 1349 */ 1350 private void updateUserActivitySummaryLocked(long now, int dirty) { 1351 // Update the status of the user activity timeout timer. 1352 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1353 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1354 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1355 1356 long nextTimeout = 0; 1357 if (mWakefulness == WAKEFULNESS_AWAKE 1358 || mWakefulness == WAKEFULNESS_DREAMING 1359 || mWakefulness == WAKEFULNESS_DOZING) { 1360 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1361 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1362 1363 mUserActivitySummary = 0; 1364 if (mLastUserActivityTime >= mLastWakeTime) { 1365 nextTimeout = mLastUserActivityTime 1366 + screenOffTimeout - screenDimDuration; 1367 if (now < nextTimeout) { 1368 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1369 } else { 1370 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1371 if (now < nextTimeout) { 1372 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1373 } 1374 } 1375 } 1376 if (mUserActivitySummary == 0 1377 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1378 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1379 if (now < nextTimeout) { 1380 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_BRIGHT) { 1381 mUserActivitySummary = USER_ACTIVITY_SCREEN_BRIGHT; 1382 } else if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DIM) { 1383 mUserActivitySummary = USER_ACTIVITY_SCREEN_DIM; 1384 } 1385 } 1386 } 1387 if (mUserActivitySummary != 0) { 1388 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1389 msg.setAsynchronous(true); 1390 mHandler.sendMessageAtTime(msg, nextTimeout); 1391 } 1392 } else { 1393 mUserActivitySummary = 0; 1394 } 1395 1396 if (DEBUG_SPEW) { 1397 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1398 + wakefulnessToString(mWakefulness) 1399 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1400 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1401 } 1402 } 1403 } 1404 1405 /** 1406 * Called when a user activity timeout has occurred. 1407 * Simply indicates that something about user activity has changed so that the new 1408 * state can be recomputed when the power state is updated. 1409 * 1410 * This function must have no other side-effects besides setting the dirty 1411 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1412 */ 1413 private void handleUserActivityTimeout() { // runs on handler thread 1414 synchronized (mLock) { 1415 if (DEBUG_SPEW) { 1416 Slog.d(TAG, "handleUserActivityTimeout"); 1417 } 1418 1419 mDirty |= DIRTY_USER_ACTIVITY; 1420 updatePowerStateLocked(); 1421 } 1422 } 1423 1424 private int getScreenOffTimeoutLocked() { 1425 int timeout = mScreenOffTimeoutSetting; 1426 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1427 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1428 } 1429 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1430 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1431 } 1432 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1433 } 1434 1435 private int getScreenDimDurationLocked(int screenOffTimeout) { 1436 return Math.min(mMaximumScreenDimDurationConfig, 1437 (int)(screenOffTimeout * mMaximumScreenDimRatioConfig)); 1438 } 1439 1440 /** 1441 * Updates the wakefulness of the device. 1442 * 1443 * This is the function that decides whether the device should start dreaming 1444 * based on the current wake locks and user activity state. It may modify mDirty 1445 * if the wakefulness changes. 1446 * 1447 * Returns true if the wakefulness changed and we need to restart power state calculation. 1448 */ 1449 private boolean updateWakefulnessLocked(int dirty) { 1450 boolean changed = false; 1451 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1452 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1453 | DIRTY_DOCK_STATE)) != 0) { 1454 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1455 if (DEBUG_SPEW) { 1456 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1457 } 1458 final long time = SystemClock.uptimeMillis(); 1459 if (shouldNapAtBedTimeLocked()) { 1460 changed = napNoUpdateLocked(time); 1461 } else { 1462 changed = goToSleepNoUpdateLocked(time, 1463 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0); 1464 } 1465 } 1466 } 1467 return changed; 1468 } 1469 1470 /** 1471 * Returns true if the device should automatically nap and start dreaming when the user 1472 * activity timeout has expired and it's bedtime. 1473 */ 1474 private boolean shouldNapAtBedTimeLocked() { 1475 return mDreamsActivateOnSleepSetting 1476 || (mDreamsActivateOnDockSetting 1477 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1478 } 1479 1480 /** 1481 * Returns true if the device should go to sleep now. 1482 * Also used when exiting a dream to determine whether we should go back 1483 * to being fully awake or else go to sleep for good. 1484 */ 1485 private boolean isItBedTimeYetLocked() { 1486 return mBootCompleted && !isBeingKeptAwakeLocked(); 1487 } 1488 1489 /** 1490 * Returns true if the device is being kept awake by a wake lock, user activity 1491 * or the stay on while powered setting. We also keep the phone awake when 1492 * the proximity sensor returns a positive result so that the device does not 1493 * lock while in a phone call. This function only controls whether the device 1494 * will go to sleep or dream which is independent of whether it will be allowed 1495 * to suspend. 1496 */ 1497 private boolean isBeingKeptAwakeLocked() { 1498 return mStayOn 1499 || mProximityPositive 1500 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1501 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1502 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1503 } 1504 1505 /** 1506 * Determines whether to post a message to the sandman to update the dream state. 1507 */ 1508 private void updateDreamLocked(int dirty) { 1509 if ((dirty & (DIRTY_WAKEFULNESS 1510 | DIRTY_USER_ACTIVITY 1511 | DIRTY_WAKE_LOCKS 1512 | DIRTY_BOOT_COMPLETED 1513 | DIRTY_SETTINGS 1514 | DIRTY_IS_POWERED 1515 | DIRTY_STAY_ON 1516 | DIRTY_PROXIMITY_POSITIVE 1517 | DIRTY_BATTERY_STATE)) != 0) { 1518 scheduleSandmanLocked(); 1519 } 1520 } 1521 1522 private void scheduleSandmanLocked() { 1523 if (!mSandmanScheduled) { 1524 mSandmanScheduled = true; 1525 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1526 msg.setAsynchronous(true); 1527 mHandler.sendMessage(msg); 1528 } 1529 } 1530 1531 /** 1532 * Called when the device enters or exits a dreaming or dozing state. 1533 * 1534 * We do this asynchronously because we must call out of the power manager to start 1535 * the dream and we don't want to hold our lock while doing so. There is a risk that 1536 * the device will wake or go to sleep in the meantime so we have to handle that case. 1537 */ 1538 private void handleSandman() { // runs on handler thread 1539 // Handle preconditions. 1540 final boolean startDreaming; 1541 final int wakefulness; 1542 synchronized (mLock) { 1543 mSandmanScheduled = false; 1544 wakefulness = mWakefulness; 1545 if (mSandmanSummoned) { 1546 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1547 || wakefulness == WAKEFULNESS_DOZING); 1548 mSandmanSummoned = false; 1549 } else { 1550 startDreaming = false; 1551 } 1552 } 1553 1554 // Start dreaming if needed. 1555 // We only control the dream on the handler thread, so we don't need to worry about 1556 // concurrent attempts to start or stop the dream. 1557 final boolean isDreaming; 1558 if (mDreamManager != null) { 1559 // Restart the dream whenever the sandman is summoned. 1560 if (startDreaming) { 1561 mDreamManager.stopDream(false /*immediate*/); 1562 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1563 } 1564 isDreaming = mDreamManager.isDreaming(); 1565 } else { 1566 isDreaming = false; 1567 } 1568 1569 // Update dream state. 1570 synchronized (mLock) { 1571 // Remember the initial battery level when the dream started. 1572 if (startDreaming && isDreaming) { 1573 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1574 if (wakefulness == WAKEFULNESS_DOZING) { 1575 Slog.i(TAG, "Dozing..."); 1576 } else { 1577 Slog.i(TAG, "Dreaming..."); 1578 } 1579 } 1580 1581 // If preconditions changed, wait for the next iteration to determine 1582 // whether the dream should continue (or be restarted). 1583 if (mSandmanSummoned || mWakefulness != wakefulness) { 1584 return; // wait for next cycle 1585 } 1586 1587 // Determine whether the dream should continue. 1588 if (wakefulness == WAKEFULNESS_DREAMING) { 1589 if (isDreaming && canDreamLocked()) { 1590 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1591 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1592 - mDreamsBatteryLevelDrainCutoffConfig 1593 && !isBeingKeptAwakeLocked()) { 1594 // If the user activity timeout expired and the battery appears 1595 // to be draining faster than it is charging then stop dreaming 1596 // and go to sleep. 1597 Slog.i(TAG, "Stopping dream because the battery appears to " 1598 + "be draining faster than it is charging. " 1599 + "Battery level when dream started: " 1600 + mBatteryLevelWhenDreamStarted + "%. " 1601 + "Battery level now: " + mBatteryLevel + "%."); 1602 } else { 1603 return; // continue dreaming 1604 } 1605 } 1606 1607 // Dream has ended or will be stopped. Update the power state. 1608 if (isItBedTimeYetLocked()) { 1609 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1610 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0); 1611 updatePowerStateLocked(); 1612 } else { 1613 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1614 updatePowerStateLocked(); 1615 } 1616 } else if (wakefulness == WAKEFULNESS_DOZING) { 1617 if (isDreaming) { 1618 return; // continue dozing 1619 } 1620 1621 // Doze has ended or will be stopped. Update the power state. 1622 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1623 updatePowerStateLocked(); 1624 } 1625 } 1626 1627 // Stop dream. 1628 if (isDreaming) { 1629 mDreamManager.stopDream(false /*immediate*/); 1630 } 1631 } 1632 1633 /** 1634 * Returns true if the device is allowed to dream in its current state. 1635 * This function is not called when dozing. 1636 */ 1637 private boolean canDreamLocked() { 1638 if (mWakefulness != WAKEFULNESS_DREAMING 1639 || !mDreamsSupportedConfig 1640 || !mDreamsEnabledSetting 1641 || !mDisplayPowerRequest.isBrightOrDim() 1642 || !mBootCompleted) { 1643 return false; 1644 } 1645 if (!isBeingKeptAwakeLocked()) { 1646 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1647 return false; 1648 } 1649 if (!mIsPowered 1650 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1651 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1652 return false; 1653 } 1654 if (mIsPowered 1655 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1656 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1657 return false; 1658 } 1659 } 1660 return true; 1661 } 1662 1663 private void handleScreenOnBlockerReleased() { 1664 synchronized (mLock) { 1665 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1666 updatePowerStateLocked(); 1667 } 1668 } 1669 1670 /** 1671 * Updates the display power state asynchronously. 1672 * When the update is finished, mDisplayReady will be set to true. The display 1673 * controller posts a message to tell us when the actual display power state 1674 * has been updated so we come back here to double-check and finish up. 1675 * 1676 * This function recalculates the display power state each time. 1677 */ 1678 private void updateDisplayPowerStateLocked(int dirty) { 1679 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1680 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1681 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1682 mDisplayPowerRequest.policy = getDesiredScreenPolicyLocked(); 1683 1684 int screenBrightness = mScreenBrightnessSettingDefault; 1685 float screenAutoBrightnessAdjustment = 0.0f; 1686 boolean autoBrightness = (mScreenBrightnessModeSetting == 1687 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1688 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1689 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1690 autoBrightness = false; 1691 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1692 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1693 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1694 screenBrightness = mScreenBrightnessSetting; 1695 } 1696 if (autoBrightness) { 1697 screenBrightness = mScreenBrightnessSettingDefault; 1698 if (isValidAutoBrightnessAdjustment( 1699 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1700 screenAutoBrightnessAdjustment = 1701 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1702 } else if (isValidAutoBrightnessAdjustment( 1703 mScreenAutoBrightnessAdjustmentSetting)) { 1704 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1705 } 1706 } 1707 screenBrightness = Math.max(Math.min(screenBrightness, 1708 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1709 screenAutoBrightnessAdjustment = Math.max(Math.min( 1710 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1711 mDisplayPowerRequest.screenBrightness = screenBrightness; 1712 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1713 screenAutoBrightnessAdjustment; 1714 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1715 1716 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1717 1718 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1719 1720 mDisplayPowerRequest.lowPowerMode = mLowPowerModeEnabled; 1721 1722 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DOZE) { 1723 mDisplayPowerRequest.dozeScreenState = mDozeScreenStateOverrideFromDreamManager; 1724 mDisplayPowerRequest.dozeScreenBrightness = 1725 mDozeScreenBrightnessOverrideFromDreamManager; 1726 } else { 1727 mDisplayPowerRequest.dozeScreenState = Display.STATE_UNKNOWN; 1728 mDisplayPowerRequest.dozeScreenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 1729 } 1730 1731 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1732 mRequestWaitForNegativeProximity); 1733 mRequestWaitForNegativeProximity = false; 1734 1735 if (DEBUG_SPEW) { 1736 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1737 + ", policy=" + mDisplayPowerRequest.policy 1738 + ", mWakefulness=" + mWakefulness 1739 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1740 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1741 + ", mBootCompleted=" + mBootCompleted); 1742 } 1743 } 1744 } 1745 1746 private static boolean isValidBrightness(int value) { 1747 return value >= 0 && value <= 255; 1748 } 1749 1750 private static boolean isValidAutoBrightnessAdjustment(float value) { 1751 // Handles NaN by always returning false. 1752 return value >= -1.0f && value <= 1.0f; 1753 } 1754 1755 private int getDesiredScreenPolicyLocked() { 1756 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1757 return DisplayPowerRequest.POLICY_OFF; 1758 } 1759 1760 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1761 return DisplayPowerRequest.POLICY_DOZE; 1762 } 1763 1764 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1765 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1766 || !mBootCompleted) { 1767 return DisplayPowerRequest.POLICY_BRIGHT; 1768 } 1769 1770 return DisplayPowerRequest.POLICY_DIM; 1771 } 1772 1773 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1774 new DisplayManagerInternal.DisplayPowerCallbacks() { 1775 private int mDisplayState = Display.STATE_UNKNOWN; 1776 1777 @Override 1778 public void onStateChanged() { 1779 synchronized (mLock) { 1780 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1781 updatePowerStateLocked(); 1782 } 1783 } 1784 1785 @Override 1786 public void onProximityPositive() { 1787 synchronized (mLock) { 1788 mProximityPositive = true; 1789 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1790 updatePowerStateLocked(); 1791 } 1792 } 1793 1794 @Override 1795 public void onProximityNegative() { 1796 synchronized (mLock) { 1797 mProximityPositive = false; 1798 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1799 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1800 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1801 updatePowerStateLocked(); 1802 } 1803 } 1804 1805 @Override 1806 public void onDisplayStateChange(int state) { 1807 // This method is only needed to support legacy display blanking behavior 1808 // where the display's power state is coupled to suspend or to the power HAL. 1809 // The order of operations matters here. 1810 synchronized (mLock) { 1811 if (mDisplayState != state) { 1812 mDisplayState = state; 1813 if (state == Display.STATE_OFF) { 1814 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1815 setHalInteractiveModeLocked(false); 1816 } 1817 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1818 setHalAutoSuspendModeLocked(true); 1819 } 1820 } else { 1821 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1822 setHalAutoSuspendModeLocked(false); 1823 } 1824 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1825 setHalInteractiveModeLocked(true); 1826 } 1827 } 1828 } 1829 } 1830 } 1831 1832 @Override 1833 public void acquireSuspendBlocker() { 1834 mDisplaySuspendBlocker.acquire(); 1835 } 1836 1837 @Override 1838 public void releaseSuspendBlocker() { 1839 mDisplaySuspendBlocker.release(); 1840 } 1841 1842 @Override 1843 public String toString() { 1844 synchronized (this) { 1845 return "state=" + Display.stateToString(mDisplayState); 1846 } 1847 } 1848 }; 1849 1850 private boolean shouldUseProximitySensorLocked() { 1851 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1852 } 1853 1854 /** 1855 * Updates the suspend blocker that keeps the CPU alive. 1856 * 1857 * This function must have no other side-effects. 1858 */ 1859 private void updateSuspendBlockerLocked() { 1860 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1861 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1862 final boolean autoSuspend = !needDisplaySuspendBlocker; 1863 1864 // Disable auto-suspend if needed. 1865 if (!autoSuspend) { 1866 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1867 setHalAutoSuspendModeLocked(false); 1868 } 1869 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1870 setHalInteractiveModeLocked(true); 1871 } 1872 } 1873 1874 // First acquire suspend blockers if needed. 1875 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1876 mWakeLockSuspendBlocker.acquire(); 1877 mHoldingWakeLockSuspendBlocker = true; 1878 } 1879 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1880 mDisplaySuspendBlocker.acquire(); 1881 mHoldingDisplaySuspendBlocker = true; 1882 } 1883 1884 // Then release suspend blockers if needed. 1885 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1886 mWakeLockSuspendBlocker.release(); 1887 mHoldingWakeLockSuspendBlocker = false; 1888 } 1889 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1890 mDisplaySuspendBlocker.release(); 1891 mHoldingDisplaySuspendBlocker = false; 1892 } 1893 1894 // Enable auto-suspend if needed. 1895 if (autoSuspend) { 1896 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1897 setHalInteractiveModeLocked(false); 1898 } 1899 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1900 setHalAutoSuspendModeLocked(true); 1901 } 1902 } 1903 } 1904 1905 /** 1906 * Return true if we must keep a suspend blocker active on behalf of the display. 1907 * We do so if the screen is on or is in transition between states. 1908 */ 1909 private boolean needDisplaySuspendBlockerLocked() { 1910 if (!mDisplayReady) { 1911 return true; 1912 } 1913 if (mDisplayPowerRequest.isBrightOrDim()) { 1914 // If we asked for the screen to be on but it is off due to the proximity 1915 // sensor then we may suspend but only if the configuration allows it. 1916 // On some hardware it may not be safe to suspend because the proximity 1917 // sensor may not be correctly configured as a wake-up source. 1918 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1919 || !mSuspendWhenScreenOffDueToProximityConfig) { 1920 return true; 1921 } 1922 } 1923 // Let the system suspend if the screen is off or dozing. 1924 return false; 1925 } 1926 1927 private void setHalAutoSuspendModeLocked(boolean enable) { 1928 if (enable != mHalAutoSuspendModeEnabled) { 1929 if (DEBUG) { 1930 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 1931 } 1932 mHalAutoSuspendModeEnabled = enable; 1933 nativeSetAutoSuspend(enable); 1934 } 1935 } 1936 1937 private void setHalInteractiveModeLocked(boolean enable) { 1938 if (enable != mHalInteractiveModeEnabled) { 1939 if (DEBUG) { 1940 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 1941 } 1942 mHalInteractiveModeEnabled = enable; 1943 nativeSetInteractive(enable); 1944 } 1945 } 1946 1947 private boolean isInteractiveInternal() { 1948 synchronized (mLock) { 1949 return mInteractive; 1950 } 1951 } 1952 1953 private boolean isLowPowerModeInternal() { 1954 synchronized (mLock) { 1955 return mLowPowerModeEnabled; 1956 } 1957 } 1958 1959 private void handleBatteryStateChangedLocked() { 1960 mDirty |= DIRTY_BATTERY_STATE; 1961 updatePowerStateLocked(); 1962 } 1963 1964 private void startWatchingForBootAnimationFinished() { 1965 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1966 } 1967 1968 private void checkIfBootAnimationFinished() { 1969 if (DEBUG) { 1970 Slog.d(TAG, "Check if boot animation finished..."); 1971 } 1972 1973 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1974 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1975 BOOT_ANIMATION_POLL_INTERVAL); 1976 return; 1977 } 1978 1979 synchronized (mLock) { 1980 if (!mBootCompleted) { 1981 Slog.i(TAG, "Boot animation finished."); 1982 handleBootCompletedLocked(); 1983 } 1984 } 1985 } 1986 1987 private void handleBootCompletedLocked() { 1988 final long now = SystemClock.uptimeMillis(); 1989 mBootCompleted = true; 1990 mDirty |= DIRTY_BOOT_COMPLETED; 1991 userActivityNoUpdateLocked( 1992 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1993 updatePowerStateLocked(); 1994 } 1995 1996 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1997 final String reason, boolean wait) { 1998 if (mHandler == null || !mSystemReady) { 1999 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 2000 } 2001 2002 Runnable runnable = new Runnable() { 2003 @Override 2004 public void run() { 2005 synchronized (this) { 2006 if (shutdown) { 2007 ShutdownThread.shutdown(mContext, confirm); 2008 } else { 2009 ShutdownThread.reboot(mContext, reason, confirm); 2010 } 2011 } 2012 } 2013 }; 2014 2015 // ShutdownThread must run on a looper capable of displaying the UI. 2016 Message msg = Message.obtain(mHandler, runnable); 2017 msg.setAsynchronous(true); 2018 mHandler.sendMessage(msg); 2019 2020 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 2021 if (wait) { 2022 synchronized (runnable) { 2023 while (true) { 2024 try { 2025 runnable.wait(); 2026 } catch (InterruptedException e) { 2027 } 2028 } 2029 } 2030 } 2031 } 2032 2033 private void crashInternal(final String message) { 2034 Thread t = new Thread("PowerManagerService.crash()") { 2035 @Override 2036 public void run() { 2037 throw new RuntimeException(message); 2038 } 2039 }; 2040 try { 2041 t.start(); 2042 t.join(); 2043 } catch (InterruptedException e) { 2044 Log.wtf(TAG, e); 2045 } 2046 } 2047 2048 private void setStayOnSettingInternal(int val) { 2049 Settings.Global.putInt(mContext.getContentResolver(), 2050 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 2051 } 2052 2053 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 2054 synchronized (mLock) { 2055 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 2056 mDirty |= DIRTY_SETTINGS; 2057 updatePowerStateLocked(); 2058 } 2059 } 2060 2061 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 2062 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 2063 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 2064 } 2065 2066 private void setAttentionLightInternal(boolean on, int color) { 2067 Light light; 2068 synchronized (mLock) { 2069 if (!mSystemReady) { 2070 return; 2071 } 2072 light = mAttentionLight; 2073 } 2074 2075 // Control light outside of lock. 2076 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 2077 } 2078 2079 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 2080 synchronized (mLock) { 2081 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 2082 mScreenBrightnessOverrideFromWindowManager = brightness; 2083 mDirty |= DIRTY_SETTINGS; 2084 updatePowerStateLocked(); 2085 } 2086 } 2087 } 2088 2089 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 2090 synchronized (mLock) { 2091 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 2092 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 2093 mDirty |= DIRTY_SETTINGS; 2094 updatePowerStateLocked(); 2095 } 2096 } 2097 } 2098 2099 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2100 synchronized (mLock) { 2101 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2102 mTemporaryScreenBrightnessSettingOverride = brightness; 2103 mDirty |= DIRTY_SETTINGS; 2104 updatePowerStateLocked(); 2105 } 2106 } 2107 } 2108 2109 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2110 synchronized (mLock) { 2111 // Note: This condition handles NaN because NaN is not equal to any other 2112 // value, including itself. 2113 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2114 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2115 mDirty |= DIRTY_SETTINGS; 2116 updatePowerStateLocked(); 2117 } 2118 } 2119 } 2120 2121 private void setDozeOverrideFromDreamManagerInternal( 2122 int screenState, int screenBrightness) { 2123 synchronized (mLock) { 2124 if (mDozeScreenStateOverrideFromDreamManager != screenState 2125 || mDozeScreenBrightnessOverrideFromDreamManager != screenBrightness) { 2126 mDozeScreenStateOverrideFromDreamManager = screenState; 2127 mDozeScreenBrightnessOverrideFromDreamManager = screenBrightness; 2128 mDirty |= DIRTY_SETTINGS; 2129 updatePowerStateLocked(); 2130 } 2131 } 2132 } 2133 2134 private void powerHintInternal(int hintId, int data) { 2135 nativeSendPowerHint(hintId, data); 2136 } 2137 2138 private static void setSurfaceFlingerLowPowerMode(int enabled) { 2139 try { 2140 final IBinder flinger = ServiceManager.getService("SurfaceFlinger"); 2141 if (flinger != null) { 2142 final Parcel data = Parcel.obtain(); 2143 data.writeInterfaceToken("android.ui.ISurfaceComposer"); 2144 data.writeInt(enabled); 2145 flinger.transact(1016, data, null, 0); 2146 data.recycle(); 2147 } 2148 } catch (RemoteException ex) { 2149 Slog.e(TAG, "Failed to reduce refresh rate", ex); 2150 } 2151 } 2152 2153 /** 2154 * Low-level function turn the device off immediately, without trying 2155 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2156 */ 2157 public static void lowLevelShutdown() { 2158 SystemProperties.set("sys.powerctl", "shutdown"); 2159 } 2160 2161 /** 2162 * Low-level function to reboot the device. On success, this 2163 * function doesn't return. If more than 20 seconds passes from 2164 * the time a reboot is requested (120 seconds for reboot to 2165 * recovery), this method returns. 2166 * 2167 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2168 */ 2169 public static void lowLevelReboot(String reason) { 2170 if (reason == null) { 2171 reason = ""; 2172 } 2173 long duration; 2174 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2175 // If we are rebooting to go into recovery, instead of 2176 // setting sys.powerctl directly we'll start the 2177 // pre-recovery service which will do some preparation for 2178 // recovery and then reboot for us. 2179 // 2180 // This preparation can take more than 20 seconds if 2181 // there's a very large update package, so lengthen the 2182 // timeout. 2183 SystemProperties.set("ctl.start", "pre-recovery"); 2184 duration = 120 * 1000L; 2185 } else { 2186 SystemProperties.set("sys.powerctl", "reboot," + reason); 2187 duration = 20 * 1000L; 2188 } 2189 try { 2190 Thread.sleep(duration); 2191 } catch (InterruptedException e) { 2192 Thread.currentThread().interrupt(); 2193 } 2194 } 2195 2196 @Override // Watchdog.Monitor implementation 2197 public void monitor() { 2198 // Grab and release lock for watchdog monitor to detect deadlocks. 2199 synchronized (mLock) { 2200 } 2201 } 2202 2203 private void dumpInternal(PrintWriter pw) { 2204 pw.println("POWER MANAGER (dumpsys power)\n"); 2205 2206 final WirelessChargerDetector wcd; 2207 synchronized (mLock) { 2208 pw.println("Power Manager State:"); 2209 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2210 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2211 pw.println(" mInteractive=" + mInteractive); 2212 pw.println(" mIsPowered=" + mIsPowered); 2213 pw.println(" mPlugType=" + mPlugType); 2214 pw.println(" mBatteryLevel=" + mBatteryLevel); 2215 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2216 pw.println(" mDockState=" + mDockState); 2217 pw.println(" mStayOn=" + mStayOn); 2218 pw.println(" mProximityPositive=" + mProximityPositive); 2219 pw.println(" mBootCompleted=" + mBootCompleted); 2220 pw.println(" mSystemReady=" + mSystemReady); 2221 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2222 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2223 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2224 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2225 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2226 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2227 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2228 pw.println(" mLowPowerModeEnabled=" + mLowPowerModeEnabled); 2229 pw.println(" mBatteryLevelLow=" + mBatteryLevelLow); 2230 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2231 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2232 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2233 pw.println(" mLastUserActivityTimeNoChangeLights=" 2234 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2235 pw.println(" mDisplayReady=" + mDisplayReady); 2236 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2237 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2238 2239 pw.println(); 2240 pw.println("Settings and Configuration:"); 2241 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2242 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2243 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2244 + mDecoupleHalInteractiveModeFromDisplayConfig); 2245 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2246 + mWakeUpWhenPluggedOrUnpluggedConfig); 2247 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2248 + mSuspendWhenScreenOffDueToProximityConfig); 2249 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2250 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2251 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2252 + mDreamsActivatedOnSleepByDefaultConfig); 2253 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2254 + mDreamsActivatedOnDockByDefaultConfig); 2255 pw.println(" mDreamsEnabledOnBatteryConfig=" 2256 + mDreamsEnabledOnBatteryConfig); 2257 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2258 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2259 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2260 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2261 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2262 + mDreamsBatteryLevelDrainCutoffConfig); 2263 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2264 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2265 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2266 pw.println(" mLowPowerModeSetting=" + mLowPowerModeSetting); 2267 pw.println(" mAutoLowPowerModeEnabled=" + mAutoLowPowerModeEnabled); 2268 pw.println(" mMinimumScreenOffTimeoutConfig=" + mMinimumScreenOffTimeoutConfig); 2269 pw.println(" mMaximumScreenDimDurationConfig=" + mMaximumScreenDimDurationConfig); 2270 pw.println(" mMaximumScreenDimRatioConfig=" + mMaximumScreenDimRatioConfig); 2271 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2272 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2273 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2274 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2275 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2276 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2277 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2278 + mScreenAutoBrightnessAdjustmentSetting); 2279 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2280 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2281 + mScreenBrightnessOverrideFromWindowManager); 2282 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2283 + mUserActivityTimeoutOverrideFromWindowManager); 2284 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2285 + mTemporaryScreenBrightnessSettingOverride); 2286 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2287 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2288 pw.println(" mDozeScreenStateOverrideFromDreamManager=" 2289 + mDozeScreenStateOverrideFromDreamManager); 2290 pw.println(" mDozeScreenBrightnessOverrideFromDreamManager=" 2291 + mDozeScreenBrightnessOverrideFromDreamManager); 2292 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2293 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2294 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2295 2296 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2297 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2298 pw.println(); 2299 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2300 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2301 2302 pw.println(); 2303 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2304 for (WakeLock wl : mWakeLocks) { 2305 pw.println(" " + wl); 2306 } 2307 2308 pw.println(); 2309 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2310 for (SuspendBlocker sb : mSuspendBlockers) { 2311 pw.println(" " + sb); 2312 } 2313 2314 pw.println(); 2315 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2316 2317 pw.println(); 2318 pw.println("Display Power: " + mDisplayPowerCallbacks); 2319 2320 wcd = mWirelessChargerDetector; 2321 } 2322 2323 if (wcd != null) { 2324 wcd.dump(pw); 2325 } 2326 } 2327 2328 private SuspendBlocker createSuspendBlockerLocked(String name) { 2329 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2330 mSuspendBlockers.add(suspendBlocker); 2331 return suspendBlocker; 2332 } 2333 2334 private static String wakefulnessToString(int wakefulness) { 2335 switch (wakefulness) { 2336 case WAKEFULNESS_ASLEEP: 2337 return "Asleep"; 2338 case WAKEFULNESS_AWAKE: 2339 return "Awake"; 2340 case WAKEFULNESS_DREAMING: 2341 return "Dreaming"; 2342 case WAKEFULNESS_DOZING: 2343 return "Dozing"; 2344 default: 2345 return Integer.toString(wakefulness); 2346 } 2347 } 2348 2349 private static WorkSource copyWorkSource(WorkSource workSource) { 2350 return workSource != null ? new WorkSource(workSource) : null; 2351 } 2352 2353 private final class BatteryReceiver extends BroadcastReceiver { 2354 @Override 2355 public void onReceive(Context context, Intent intent) { 2356 synchronized (mLock) { 2357 handleBatteryStateChangedLocked(); 2358 } 2359 } 2360 } 2361 2362 private final class BootCompletedReceiver extends BroadcastReceiver { 2363 @Override 2364 public void onReceive(Context context, Intent intent) { 2365 // This is our early signal that the system thinks it has finished booting. 2366 // However, the boot animation may still be running for a few more seconds 2367 // since it is ultimately in charge of when it terminates. 2368 // Defer transitioning into the boot completed state until the animation exits. 2369 // We do this so that the screen does not start to dim prematurely before 2370 // the user has actually had a chance to interact with the device. 2371 startWatchingForBootAnimationFinished(); 2372 } 2373 } 2374 2375 private final class DreamReceiver extends BroadcastReceiver { 2376 @Override 2377 public void onReceive(Context context, Intent intent) { 2378 synchronized (mLock) { 2379 scheduleSandmanLocked(); 2380 } 2381 } 2382 } 2383 2384 private final class UserSwitchedReceiver extends BroadcastReceiver { 2385 @Override 2386 public void onReceive(Context context, Intent intent) { 2387 synchronized (mLock) { 2388 handleSettingsChangedLocked(); 2389 } 2390 } 2391 } 2392 2393 private final class DockReceiver extends BroadcastReceiver { 2394 @Override 2395 public void onReceive(Context context, Intent intent) { 2396 synchronized (mLock) { 2397 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2398 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2399 if (mDockState != dockState) { 2400 mDockState = dockState; 2401 mDirty |= DIRTY_DOCK_STATE; 2402 updatePowerStateLocked(); 2403 } 2404 } 2405 } 2406 } 2407 2408 private final class SettingsObserver extends ContentObserver { 2409 public SettingsObserver(Handler handler) { 2410 super(handler); 2411 } 2412 2413 @Override 2414 public void onChange(boolean selfChange, Uri uri) { 2415 synchronized (mLock) { 2416 handleSettingsChangedLocked(); 2417 } 2418 } 2419 } 2420 2421 /** 2422 * Handler for asynchronous operations performed by the power manager. 2423 */ 2424 private final class PowerManagerHandler extends Handler { 2425 public PowerManagerHandler(Looper looper) { 2426 super(looper, null, true /*async*/); 2427 } 2428 2429 @Override 2430 public void handleMessage(Message msg) { 2431 switch (msg.what) { 2432 case MSG_USER_ACTIVITY_TIMEOUT: 2433 handleUserActivityTimeout(); 2434 break; 2435 case MSG_SANDMAN: 2436 handleSandman(); 2437 break; 2438 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2439 handleScreenOnBlockerReleased(); 2440 break; 2441 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2442 checkIfBootAnimationFinished(); 2443 break; 2444 } 2445 } 2446 } 2447 2448 /** 2449 * Represents a wake lock that has been acquired by an application. 2450 */ 2451 private final class WakeLock implements IBinder.DeathRecipient { 2452 public final IBinder mLock; 2453 public int mFlags; 2454 public String mTag; 2455 public final String mPackageName; 2456 public WorkSource mWorkSource; 2457 public String mHistoryTag; 2458 public final int mOwnerUid; 2459 public final int mOwnerPid; 2460 public boolean mNotifiedAcquired; 2461 2462 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2463 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2464 mLock = lock; 2465 mFlags = flags; 2466 mTag = tag; 2467 mPackageName = packageName; 2468 mWorkSource = copyWorkSource(workSource); 2469 mHistoryTag = historyTag; 2470 mOwnerUid = ownerUid; 2471 mOwnerPid = ownerPid; 2472 } 2473 2474 @Override 2475 public void binderDied() { 2476 PowerManagerService.this.handleWakeLockDeath(this); 2477 } 2478 2479 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2480 int ownerUid, int ownerPid) { 2481 return mFlags == flags 2482 && mTag.equals(tag) 2483 && hasSameWorkSource(workSource) 2484 && mOwnerUid == ownerUid 2485 && mOwnerPid == ownerPid; 2486 } 2487 2488 public void updateProperties(int flags, String tag, String packageName, 2489 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2490 if (!mPackageName.equals(packageName)) { 2491 throw new IllegalStateException("Existing wake lock package name changed: " 2492 + mPackageName + " to " + packageName); 2493 } 2494 if (mOwnerUid != ownerUid) { 2495 throw new IllegalStateException("Existing wake lock uid changed: " 2496 + mOwnerUid + " to " + ownerUid); 2497 } 2498 if (mOwnerPid != ownerPid) { 2499 throw new IllegalStateException("Existing wake lock pid changed: " 2500 + mOwnerPid + " to " + ownerPid); 2501 } 2502 mFlags = flags; 2503 mTag = tag; 2504 updateWorkSource(workSource); 2505 mHistoryTag = historyTag; 2506 } 2507 2508 public boolean hasSameWorkSource(WorkSource workSource) { 2509 return Objects.equal(mWorkSource, workSource); 2510 } 2511 2512 public void updateWorkSource(WorkSource workSource) { 2513 mWorkSource = copyWorkSource(workSource); 2514 } 2515 2516 @Override 2517 public String toString() { 2518 return getLockLevelString() 2519 + " '" + mTag + "'" + getLockFlagsString() 2520 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2521 } 2522 2523 @SuppressWarnings("deprecation") 2524 private String getLockLevelString() { 2525 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2526 case PowerManager.FULL_WAKE_LOCK: 2527 return "FULL_WAKE_LOCK "; 2528 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2529 return "SCREEN_BRIGHT_WAKE_LOCK "; 2530 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2531 return "SCREEN_DIM_WAKE_LOCK "; 2532 case PowerManager.PARTIAL_WAKE_LOCK: 2533 return "PARTIAL_WAKE_LOCK "; 2534 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2535 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2536 case PowerManager.DOZE_WAKE_LOCK: 2537 return "DOZE_WAKE_LOCK "; 2538 default: 2539 return "??? "; 2540 } 2541 } 2542 2543 private String getLockFlagsString() { 2544 String result = ""; 2545 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2546 result += " ACQUIRE_CAUSES_WAKEUP"; 2547 } 2548 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2549 result += " ON_AFTER_RELEASE"; 2550 } 2551 return result; 2552 } 2553 } 2554 2555 private final class SuspendBlockerImpl implements SuspendBlocker { 2556 private final String mName; 2557 private int mReferenceCount; 2558 2559 public SuspendBlockerImpl(String name) { 2560 mName = name; 2561 } 2562 2563 @Override 2564 protected void finalize() throws Throwable { 2565 try { 2566 if (mReferenceCount != 0) { 2567 Log.wtf(TAG, "Suspend blocker \"" + mName 2568 + "\" was finalized without being released!"); 2569 mReferenceCount = 0; 2570 nativeReleaseSuspendBlocker(mName); 2571 } 2572 } finally { 2573 super.finalize(); 2574 } 2575 } 2576 2577 @Override 2578 public void acquire() { 2579 synchronized (this) { 2580 mReferenceCount += 1; 2581 if (mReferenceCount == 1) { 2582 if (DEBUG_SPEW) { 2583 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2584 } 2585 nativeAcquireSuspendBlocker(mName); 2586 } 2587 } 2588 } 2589 2590 @Override 2591 public void release() { 2592 synchronized (this) { 2593 mReferenceCount -= 1; 2594 if (mReferenceCount == 0) { 2595 if (DEBUG_SPEW) { 2596 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2597 } 2598 nativeReleaseSuspendBlocker(mName); 2599 } else if (mReferenceCount < 0) { 2600 Log.wtf(TAG, "Suspend blocker \"" + mName 2601 + "\" was released without being acquired!", new Throwable()); 2602 mReferenceCount = 0; 2603 } 2604 } 2605 } 2606 2607 @Override 2608 public String toString() { 2609 synchronized (this) { 2610 return mName + ": ref count=" + mReferenceCount; 2611 } 2612 } 2613 } 2614 2615 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2616 private int mNestCount; 2617 2618 public boolean isHeld() { 2619 synchronized (this) { 2620 return mNestCount != 0; 2621 } 2622 } 2623 2624 @Override 2625 public void acquire() { 2626 synchronized (this) { 2627 mNestCount += 1; 2628 if (DEBUG) { 2629 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2630 } 2631 } 2632 } 2633 2634 @Override 2635 public void release() { 2636 synchronized (this) { 2637 mNestCount -= 1; 2638 if (mNestCount < 0) { 2639 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2640 new Throwable()); 2641 mNestCount = 0; 2642 } 2643 if (mNestCount == 0) { 2644 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2645 } 2646 if (DEBUG) { 2647 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2648 } 2649 } 2650 } 2651 2652 @Override 2653 public String toString() { 2654 synchronized (this) { 2655 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2656 } 2657 } 2658 } 2659 2660 private final class BinderService extends IPowerManager.Stub { 2661 @Override // Binder call 2662 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2663 String packageName, int uid) { 2664 if (uid < 0) { 2665 uid = Binder.getCallingUid(); 2666 } 2667 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2668 } 2669 2670 @Override // Binder call 2671 public void powerHint(int hintId, int data) { 2672 if (!mSystemReady) { 2673 // Service not ready yet, so who the heck cares about power hints, bah. 2674 return; 2675 } 2676 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2677 powerHintInternal(hintId, data); 2678 } 2679 2680 @Override // Binder call 2681 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2682 WorkSource ws, String historyTag) { 2683 if (lock == null) { 2684 throw new IllegalArgumentException("lock must not be null"); 2685 } 2686 if (packageName == null) { 2687 throw new IllegalArgumentException("packageName must not be null"); 2688 } 2689 PowerManager.validateWakeLockParameters(flags, tag); 2690 2691 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2692 if (ws != null && ws.size() != 0) { 2693 mContext.enforceCallingOrSelfPermission( 2694 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2695 } else { 2696 ws = null; 2697 } 2698 2699 final int uid = Binder.getCallingUid(); 2700 final int pid = Binder.getCallingPid(); 2701 final long ident = Binder.clearCallingIdentity(); 2702 try { 2703 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2704 } finally { 2705 Binder.restoreCallingIdentity(ident); 2706 } 2707 } 2708 2709 @Override // Binder call 2710 public void releaseWakeLock(IBinder lock, int flags) { 2711 if (lock == null) { 2712 throw new IllegalArgumentException("lock must not be null"); 2713 } 2714 2715 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2716 2717 final long ident = Binder.clearCallingIdentity(); 2718 try { 2719 releaseWakeLockInternal(lock, flags); 2720 } finally { 2721 Binder.restoreCallingIdentity(ident); 2722 } 2723 } 2724 2725 @Override // Binder call 2726 public void updateWakeLockUids(IBinder lock, int[] uids) { 2727 WorkSource ws = null; 2728 2729 if (uids != null) { 2730 ws = new WorkSource(); 2731 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2732 // one at a time? 2733 for (int i = 0; i < uids.length; i++) { 2734 ws.add(uids[i]); 2735 } 2736 } 2737 updateWakeLockWorkSource(lock, ws, null); 2738 } 2739 2740 @Override // Binder call 2741 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2742 if (lock == null) { 2743 throw new IllegalArgumentException("lock must not be null"); 2744 } 2745 2746 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2747 if (ws != null && ws.size() != 0) { 2748 mContext.enforceCallingOrSelfPermission( 2749 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2750 } else { 2751 ws = null; 2752 } 2753 2754 final long ident = Binder.clearCallingIdentity(); 2755 try { 2756 updateWakeLockWorkSourceInternal(lock, ws, historyTag); 2757 } finally { 2758 Binder.restoreCallingIdentity(ident); 2759 } 2760 } 2761 2762 @Override // Binder call 2763 public boolean isWakeLockLevelSupported(int level) { 2764 final long ident = Binder.clearCallingIdentity(); 2765 try { 2766 return isWakeLockLevelSupportedInternal(level); 2767 } finally { 2768 Binder.restoreCallingIdentity(ident); 2769 } 2770 } 2771 2772 @Override // Binder call 2773 public void userActivity(long eventTime, int event, int flags) { 2774 final long now = SystemClock.uptimeMillis(); 2775 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2776 != PackageManager.PERMISSION_GRANTED) { 2777 // Once upon a time applications could call userActivity(). 2778 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2779 // request instead of throwing a SecurityException so we don't break old apps. 2780 synchronized (mLock) { 2781 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2782 mLastWarningAboutUserActivityPermission = now; 2783 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2784 + "caller does not have DEVICE_POWER permission. " 2785 + "Please fix your app! " 2786 + " pid=" + Binder.getCallingPid() 2787 + " uid=" + Binder.getCallingUid()); 2788 } 2789 } 2790 return; 2791 } 2792 2793 if (eventTime > SystemClock.uptimeMillis()) { 2794 throw new IllegalArgumentException("event time must not be in the future"); 2795 } 2796 2797 final int uid = Binder.getCallingUid(); 2798 final long ident = Binder.clearCallingIdentity(); 2799 try { 2800 userActivityInternal(eventTime, event, flags, uid); 2801 } finally { 2802 Binder.restoreCallingIdentity(ident); 2803 } 2804 } 2805 2806 @Override // Binder call 2807 public void wakeUp(long eventTime) { 2808 if (eventTime > SystemClock.uptimeMillis()) { 2809 throw new IllegalArgumentException("event time must not be in the future"); 2810 } 2811 2812 mContext.enforceCallingOrSelfPermission( 2813 android.Manifest.permission.DEVICE_POWER, null); 2814 2815 final long ident = Binder.clearCallingIdentity(); 2816 try { 2817 wakeUpInternal(eventTime); 2818 } finally { 2819 Binder.restoreCallingIdentity(ident); 2820 } 2821 } 2822 2823 @Override // Binder call 2824 public void goToSleep(long eventTime, int reason, int flags) { 2825 if (eventTime > SystemClock.uptimeMillis()) { 2826 throw new IllegalArgumentException("event time must not be in the future"); 2827 } 2828 2829 mContext.enforceCallingOrSelfPermission( 2830 android.Manifest.permission.DEVICE_POWER, null); 2831 2832 final long ident = Binder.clearCallingIdentity(); 2833 try { 2834 goToSleepInternal(eventTime, reason, flags); 2835 } finally { 2836 Binder.restoreCallingIdentity(ident); 2837 } 2838 } 2839 2840 @Override // Binder call 2841 public void nap(long eventTime) { 2842 if (eventTime > SystemClock.uptimeMillis()) { 2843 throw new IllegalArgumentException("event time must not be in the future"); 2844 } 2845 2846 mContext.enforceCallingOrSelfPermission( 2847 android.Manifest.permission.DEVICE_POWER, null); 2848 2849 final long ident = Binder.clearCallingIdentity(); 2850 try { 2851 napInternal(eventTime); 2852 } finally { 2853 Binder.restoreCallingIdentity(ident); 2854 } 2855 } 2856 2857 @Override // Binder call 2858 public boolean isInteractive() { 2859 final long ident = Binder.clearCallingIdentity(); 2860 try { 2861 return isInteractiveInternal(); 2862 } finally { 2863 Binder.restoreCallingIdentity(ident); 2864 } 2865 } 2866 2867 @Override // Binder call 2868 public boolean isPowerSaveMode() { 2869 final long ident = Binder.clearCallingIdentity(); 2870 try { 2871 return isLowPowerModeInternal(); 2872 } finally { 2873 Binder.restoreCallingIdentity(ident); 2874 } 2875 } 2876 2877 /** 2878 * Reboots the device. 2879 * 2880 * @param confirm If true, shows a reboot confirmation dialog. 2881 * @param reason The reason for the reboot, or null if none. 2882 * @param wait If true, this call waits for the reboot to complete and does not return. 2883 */ 2884 @Override // Binder call 2885 public void reboot(boolean confirm, String reason, boolean wait) { 2886 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2887 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2888 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2889 } 2890 2891 final long ident = Binder.clearCallingIdentity(); 2892 try { 2893 shutdownOrRebootInternal(false, confirm, reason, wait); 2894 } finally { 2895 Binder.restoreCallingIdentity(ident); 2896 } 2897 } 2898 2899 /** 2900 * Shuts down the device. 2901 * 2902 * @param confirm If true, shows a shutdown confirmation dialog. 2903 * @param wait If true, this call waits for the shutdown to complete and does not return. 2904 */ 2905 @Override // Binder call 2906 public void shutdown(boolean confirm, boolean wait) { 2907 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2908 2909 final long ident = Binder.clearCallingIdentity(); 2910 try { 2911 shutdownOrRebootInternal(true, confirm, null, wait); 2912 } finally { 2913 Binder.restoreCallingIdentity(ident); 2914 } 2915 } 2916 2917 /** 2918 * Crash the runtime (causing a complete restart of the Android framework). 2919 * Requires REBOOT permission. Mostly for testing. Should not return. 2920 */ 2921 @Override // Binder call 2922 public void crash(String message) { 2923 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2924 2925 final long ident = Binder.clearCallingIdentity(); 2926 try { 2927 crashInternal(message); 2928 } finally { 2929 Binder.restoreCallingIdentity(ident); 2930 } 2931 } 2932 2933 /** 2934 * Set the setting that determines whether the device stays on when plugged in. 2935 * The argument is a bit string, with each bit specifying a power source that, 2936 * when the device is connected to that source, causes the device to stay on. 2937 * See {@link android.os.BatteryManager} for the list of power sources that 2938 * can be specified. Current values include 2939 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2940 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2941 * 2942 * Used by "adb shell svc power stayon ..." 2943 * 2944 * @param val an {@code int} containing the bits that specify which power sources 2945 * should cause the device to stay on. 2946 */ 2947 @Override // Binder call 2948 public void setStayOnSetting(int val) { 2949 mContext.enforceCallingOrSelfPermission( 2950 android.Manifest.permission.WRITE_SETTINGS, null); 2951 2952 final long ident = Binder.clearCallingIdentity(); 2953 try { 2954 setStayOnSettingInternal(val); 2955 } finally { 2956 Binder.restoreCallingIdentity(ident); 2957 } 2958 } 2959 2960 /** 2961 * Used by device administration to set the maximum screen off timeout. 2962 * 2963 * This method must only be called by the device administration policy manager. 2964 */ 2965 @Override // Binder call 2966 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2967 final long ident = Binder.clearCallingIdentity(); 2968 try { 2969 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2970 } finally { 2971 Binder.restoreCallingIdentity(ident); 2972 } 2973 } 2974 2975 /** 2976 * Used by the settings application and brightness control widgets to 2977 * temporarily override the current screen brightness setting so that the 2978 * user can observe the effect of an intended settings change without applying 2979 * it immediately. 2980 * 2981 * The override will be canceled when the setting value is next updated. 2982 * 2983 * @param brightness The overridden brightness. 2984 * 2985 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2986 */ 2987 @Override // Binder call 2988 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2989 mContext.enforceCallingOrSelfPermission( 2990 android.Manifest.permission.DEVICE_POWER, null); 2991 2992 final long ident = Binder.clearCallingIdentity(); 2993 try { 2994 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2995 } finally { 2996 Binder.restoreCallingIdentity(ident); 2997 } 2998 } 2999 3000 /** 3001 * Used by the settings application and brightness control widgets to 3002 * temporarily override the current screen auto-brightness adjustment setting so that the 3003 * user can observe the effect of an intended settings change without applying 3004 * it immediately. 3005 * 3006 * The override will be canceled when the setting value is next updated. 3007 * 3008 * @param adj The overridden brightness, or Float.NaN to disable the override. 3009 * 3010 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 3011 */ 3012 @Override // Binder call 3013 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 3014 mContext.enforceCallingOrSelfPermission( 3015 android.Manifest.permission.DEVICE_POWER, null); 3016 3017 final long ident = Binder.clearCallingIdentity(); 3018 try { 3019 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 3020 } finally { 3021 Binder.restoreCallingIdentity(ident); 3022 } 3023 } 3024 3025 /** 3026 * Used by the phone application to make the attention LED flash when ringing. 3027 */ 3028 @Override // Binder call 3029 public void setAttentionLight(boolean on, int color) { 3030 mContext.enforceCallingOrSelfPermission( 3031 android.Manifest.permission.DEVICE_POWER, null); 3032 3033 final long ident = Binder.clearCallingIdentity(); 3034 try { 3035 setAttentionLightInternal(on, color); 3036 } finally { 3037 Binder.restoreCallingIdentity(ident); 3038 } 3039 } 3040 3041 @Override // Binder call 3042 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3043 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 3044 != PackageManager.PERMISSION_GRANTED) { 3045 pw.println("Permission Denial: can't dump PowerManager from from pid=" 3046 + Binder.getCallingPid() 3047 + ", uid=" + Binder.getCallingUid()); 3048 return; 3049 } 3050 3051 final long ident = Binder.clearCallingIdentity(); 3052 try { 3053 dumpInternal(pw); 3054 } finally { 3055 Binder.restoreCallingIdentity(ident); 3056 } 3057 } 3058 } 3059 3060 private final class LocalService extends PowerManagerInternal { 3061 @Override 3062 public void setScreenBrightnessOverrideFromWindowManager(int screenBrightness) { 3063 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3064 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3065 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3066 } 3067 setScreenBrightnessOverrideFromWindowManagerInternal(screenBrightness); 3068 } 3069 3070 @Override 3071 public void setButtonBrightnessOverrideFromWindowManager(int screenBrightness) { 3072 // Do nothing. 3073 // Button lights are not currently supported in the new implementation. 3074 } 3075 3076 @Override 3077 public void setDozeOverrideFromDreamManager(int screenState, int screenBrightness) { 3078 switch (screenState) { 3079 case Display.STATE_UNKNOWN: 3080 case Display.STATE_OFF: 3081 case Display.STATE_DOZE: 3082 case Display.STATE_DOZE_SUSPEND: 3083 case Display.STATE_ON: 3084 break; 3085 default: 3086 screenState = Display.STATE_UNKNOWN; 3087 break; 3088 } 3089 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3090 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3091 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3092 } 3093 setDozeOverrideFromDreamManagerInternal(screenState, screenBrightness); 3094 } 3095 3096 @Override 3097 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 3098 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 3099 } 3100 3101 @Override 3102 public boolean getLowPowerModeEnabled() { 3103 synchronized (mLock) { 3104 return mLowPowerModeEnabled; 3105 } 3106 } 3107 3108 @Override 3109 public void registerLowPowerModeObserver(LowPowerModeListener listener) { 3110 synchronized (mLock) { 3111 mLowPowerModeListeners.add(listener); 3112 } 3113 } 3114 } 3115} 3116