PowerManagerService.java revision 0d192a9e279133f80a288d34e50c64a5c91c1a5b
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 // Time when we last logged a warning about calling userActivity() without permission. 408 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 409 410 // If true, the device is in low power mode. 411 private boolean mLowPowerModeEnabled; 412 413 // Current state of the low power mode setting. 414 private boolean mLowPowerModeSetting; 415 416 // Current state of whether the settings are allowing auto low power mode. 417 private boolean mAutoLowPowerModeEnabled; 418 419 // True if the battery level is currently considered low. 420 private boolean mBatteryLevelLow; 421 422 private final ArrayList<PowerManagerInternal.LowPowerModeListener> mLowPowerModeListeners 423 = new ArrayList<PowerManagerInternal.LowPowerModeListener>(); 424 425 private native void nativeInit(); 426 427 private static native void nativeAcquireSuspendBlocker(String name); 428 private static native void nativeReleaseSuspendBlocker(String name); 429 private static native void nativeSetInteractive(boolean enable); 430 private static native void nativeSetAutoSuspend(boolean enable); 431 private static native void nativeSendPowerHint(int hintId, int data); 432 433 public PowerManagerService(Context context) { 434 super(context); 435 mContext = context; 436 mHandlerThread = new ServiceThread(TAG, 437 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 438 mHandlerThread.start(); 439 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 440 441 synchronized (mLock) { 442 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 443 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 444 mDisplaySuspendBlocker.acquire(); 445 mHoldingDisplaySuspendBlocker = true; 446 mHalAutoSuspendModeEnabled = false; 447 mHalInteractiveModeEnabled = true; 448 449 mScreenOnBlocker = new ScreenOnBlockerImpl(); 450 mWakefulness = WAKEFULNESS_AWAKE; 451 mInteractive = true; 452 453 nativeInit(); 454 nativeSetAutoSuspend(false); 455 nativeSetInteractive(true); 456 } 457 } 458 459 @Override 460 public void onStart() { 461 publishBinderService(Context.POWER_SERVICE, new BinderService()); 462 publishLocalService(PowerManagerInternal.class, new LocalService()); 463 464 Watchdog.getInstance().addMonitor(this); 465 Watchdog.getInstance().addThread(mHandler); 466 } 467 468 public void systemReady(IAppOpsService appOps) { 469 synchronized (mLock) { 470 mSystemReady = true; 471 mAppOps = appOps; 472 mDreamManager = getLocalService(DreamManagerInternal.class); 473 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 474 mPolicy = getLocalService(WindowManagerPolicy.class); 475 mBatteryManagerInternal = getLocalService(BatteryManagerInternal.class); 476 477 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 478 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 479 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 480 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 481 482 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 483 484 // The notifier runs on the system server's main looper so as not to interfere 485 // with the animations and other critical functions of the power manager. 486 mBatteryStats = BatteryStatsService.getService(); 487 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 488 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 489 mScreenOnBlocker, mPolicy); 490 491 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 492 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 493 mHandler); 494 mSettingsObserver = new SettingsObserver(mHandler); 495 496 mLightsManager = getLocalService(LightsManager.class); 497 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 498 499 // Initialize display power management. 500 mDisplayManagerInternal.initPowerManagement( 501 mDisplayPowerCallbacks, mHandler, sensorManager); 502 503 // Register for broadcasts from other components of the system. 504 IntentFilter filter = new IntentFilter(); 505 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 506 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 507 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 508 509 filter = new IntentFilter(); 510 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 511 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 512 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 513 514 filter = new IntentFilter(); 515 filter.addAction(Intent.ACTION_DREAMING_STARTED); 516 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 517 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 518 519 filter = new IntentFilter(); 520 filter.addAction(Intent.ACTION_USER_SWITCHED); 521 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 522 523 filter = new IntentFilter(); 524 filter.addAction(Intent.ACTION_DOCK_EVENT); 525 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 526 527 // Register for settings changes. 528 final ContentResolver resolver = mContext.getContentResolver(); 529 resolver.registerContentObserver(Settings.Secure.getUriFor( 530 Settings.Secure.SCREENSAVER_ENABLED), 531 false, mSettingsObserver, UserHandle.USER_ALL); 532 resolver.registerContentObserver(Settings.Secure.getUriFor( 533 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 534 false, mSettingsObserver, UserHandle.USER_ALL); 535 resolver.registerContentObserver(Settings.Secure.getUriFor( 536 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 537 false, mSettingsObserver, UserHandle.USER_ALL); 538 resolver.registerContentObserver(Settings.System.getUriFor( 539 Settings.System.SCREEN_OFF_TIMEOUT), 540 false, mSettingsObserver, UserHandle.USER_ALL); 541 resolver.registerContentObserver(Settings.Global.getUriFor( 542 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 543 false, mSettingsObserver, UserHandle.USER_ALL); 544 resolver.registerContentObserver(Settings.System.getUriFor( 545 Settings.System.SCREEN_BRIGHTNESS), 546 false, mSettingsObserver, UserHandle.USER_ALL); 547 resolver.registerContentObserver(Settings.System.getUriFor( 548 Settings.System.SCREEN_BRIGHTNESS_MODE), 549 false, mSettingsObserver, UserHandle.USER_ALL); 550 resolver.registerContentObserver(Settings.System.getUriFor( 551 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ), 552 false, mSettingsObserver, UserHandle.USER_ALL); 553 resolver.registerContentObserver(Settings.Global.getUriFor( 554 Settings.Global.LOW_POWER_MODE), 555 false, mSettingsObserver, UserHandle.USER_ALL); 556 resolver.registerContentObserver(Settings.Global.getUriFor( 557 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL), 558 false, mSettingsObserver, UserHandle.USER_ALL); 559 // Go. 560 readConfigurationLocked(); 561 updateSettingsLocked(); 562 mDirty |= DIRTY_BATTERY_STATE; 563 updatePowerStateLocked(); 564 } 565 } 566 567 private void readConfigurationLocked() { 568 final Resources resources = mContext.getResources(); 569 570 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 571 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 572 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 573 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 574 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 575 com.android.internal.R.bool.config_unplugTurnsOnScreen); 576 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 577 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 578 mDreamsSupportedConfig = resources.getBoolean( 579 com.android.internal.R.bool.config_dreamsSupported); 580 mDreamsEnabledByDefaultConfig = resources.getBoolean( 581 com.android.internal.R.bool.config_dreamsEnabledByDefault); 582 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 583 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 584 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 585 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 586 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 587 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 588 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 589 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 590 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 591 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 592 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 593 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 594 mMinimumScreenOffTimeoutConfig = resources.getInteger( 595 com.android.internal.R.integer.config_minimumScreenOffTimeout); 596 mMaximumScreenDimDurationConfig = resources.getInteger( 597 com.android.internal.R.integer.config_maximumScreenDimDuration); 598 mMaximumScreenDimRatioConfig = resources.getFraction( 599 com.android.internal.R.fraction.config_maximumScreenDimRatio, 1, 1); 600 } 601 602 private void updateSettingsLocked() { 603 final ContentResolver resolver = mContext.getContentResolver(); 604 605 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 606 Settings.Secure.SCREENSAVER_ENABLED, 607 mDreamsEnabledByDefaultConfig ? 1 : 0, 608 UserHandle.USER_CURRENT) != 0); 609 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 610 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 611 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 612 UserHandle.USER_CURRENT) != 0); 613 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 614 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 615 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 616 UserHandle.USER_CURRENT) != 0); 617 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 618 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 619 UserHandle.USER_CURRENT); 620 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 621 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 622 623 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 624 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 625 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 626 UserHandle.USER_CURRENT); 627 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 628 mTemporaryScreenBrightnessSettingOverride = -1; 629 } 630 631 final float oldScreenAutoBrightnessAdjustmentSetting = 632 mScreenAutoBrightnessAdjustmentSetting; 633 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 634 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 635 UserHandle.USER_CURRENT); 636 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 637 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 638 } 639 640 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 641 Settings.System.SCREEN_BRIGHTNESS_MODE, 642 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 643 644 final boolean lowPowerModeEnabled = Settings.Global.getInt(resolver, 645 Settings.Global.LOW_POWER_MODE, 0) != 0; 646 final boolean autoLowPowerModeEnabled = Settings.Global.getInt(resolver, 647 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL, 15) != 0; 648 if (lowPowerModeEnabled != mLowPowerModeSetting 649 || autoLowPowerModeEnabled != mAutoLowPowerModeEnabled) { 650 mLowPowerModeSetting = lowPowerModeEnabled; 651 mAutoLowPowerModeEnabled = autoLowPowerModeEnabled; 652 updateLowPowerModeLocked(); 653 } 654 655 mDirty |= DIRTY_SETTINGS; 656 } 657 658 void updateLowPowerModeLocked() { 659 final boolean lowPowerModeEnabled = !mIsPowered 660 && (mLowPowerModeSetting || (mAutoLowPowerModeEnabled && mBatteryLevelLow)); 661 if (mLowPowerModeEnabled != lowPowerModeEnabled) { 662 mLowPowerModeEnabled = lowPowerModeEnabled; 663 powerHintInternal(POWER_HINT_LOW_POWER_MODE, lowPowerModeEnabled ? 1 : 0); 664 setSurfaceFlingerLowPowerMode(lowPowerModeEnabled ? 1 : 0); 665 mLowPowerModeEnabled = lowPowerModeEnabled; 666 BackgroundThread.getHandler().post(new Runnable() { 667 @Override 668 public void run() { 669 ArrayList<PowerManagerInternal.LowPowerModeListener> listeners; 670 synchronized (mLock) { 671 listeners = new ArrayList<PowerManagerInternal.LowPowerModeListener>( 672 mLowPowerModeListeners); 673 } 674 for (int i=0; i<listeners.size(); i++) { 675 listeners.get(i).onLowPowerModeChanged(lowPowerModeEnabled); 676 } 677 Intent intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED); 678 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 679 mContext.sendBroadcast(intent); 680 } 681 }); 682 } 683 } 684 685 private void handleSettingsChangedLocked() { 686 updateSettingsLocked(); 687 updatePowerStateLocked(); 688 } 689 690 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 691 WorkSource ws, String historyTag, int uid, int pid) { 692 synchronized (mLock) { 693 if (DEBUG_SPEW) { 694 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 695 + ", flags=0x" + Integer.toHexString(flags) 696 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 697 } 698 699 WakeLock wakeLock; 700 int index = findWakeLockIndexLocked(lock); 701 boolean notifyAcquire; 702 if (index >= 0) { 703 wakeLock = mWakeLocks.get(index); 704 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 705 // Update existing wake lock. This shouldn't happen but is harmless. 706 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 707 uid, pid, ws, historyTag); 708 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 709 } 710 notifyAcquire = false; 711 } else { 712 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 713 try { 714 lock.linkToDeath(wakeLock, 0); 715 } catch (RemoteException ex) { 716 throw new IllegalArgumentException("Wake lock is already dead."); 717 } 718 mWakeLocks.add(wakeLock); 719 notifyAcquire = true; 720 } 721 722 applyWakeLockFlagsOnAcquireLocked(wakeLock); 723 mDirty |= DIRTY_WAKE_LOCKS; 724 updatePowerStateLocked(); 725 if (notifyAcquire) { 726 // This needs to be done last so we are sure we have acquired the 727 // kernel wake lock. Otherwise we have a race where the system may 728 // go to sleep between the time we start the accounting in battery 729 // stats and when we actually get around to telling the kernel to 730 // stay awake. 731 notifyWakeLockAcquiredLocked(wakeLock); 732 } 733 } 734 } 735 736 @SuppressWarnings("deprecation") 737 private static boolean isScreenLock(final WakeLock wakeLock) { 738 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 739 case PowerManager.FULL_WAKE_LOCK: 740 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 741 case PowerManager.SCREEN_DIM_WAKE_LOCK: 742 return true; 743 } 744 return false; 745 } 746 747 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 748 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 749 && isScreenLock(wakeLock)) { 750 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 751 } 752 } 753 754 private void releaseWakeLockInternal(IBinder lock, int flags) { 755 synchronized (mLock) { 756 int index = findWakeLockIndexLocked(lock); 757 if (index < 0) { 758 if (DEBUG_SPEW) { 759 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 760 + " [not found], flags=0x" + Integer.toHexString(flags)); 761 } 762 return; 763 } 764 765 WakeLock wakeLock = mWakeLocks.get(index); 766 if (DEBUG_SPEW) { 767 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 768 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 769 } 770 771 mWakeLocks.remove(index); 772 notifyWakeLockReleasedLocked(wakeLock); 773 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 774 775 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 776 mRequestWaitForNegativeProximity = true; 777 } 778 779 applyWakeLockFlagsOnReleaseLocked(wakeLock); 780 mDirty |= DIRTY_WAKE_LOCKS; 781 updatePowerStateLocked(); 782 } 783 } 784 785 private void handleWakeLockDeath(WakeLock wakeLock) { 786 synchronized (mLock) { 787 if (DEBUG_SPEW) { 788 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 789 + " [" + wakeLock.mTag + "]"); 790 } 791 792 int index = mWakeLocks.indexOf(wakeLock); 793 if (index < 0) { 794 return; 795 } 796 797 mWakeLocks.remove(index); 798 notifyWakeLockReleasedLocked(wakeLock); 799 800 applyWakeLockFlagsOnReleaseLocked(wakeLock); 801 mDirty |= DIRTY_WAKE_LOCKS; 802 updatePowerStateLocked(); 803 } 804 } 805 806 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 807 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 808 && isScreenLock(wakeLock)) { 809 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 810 PowerManager.USER_ACTIVITY_EVENT_OTHER, 811 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 812 wakeLock.mOwnerUid); 813 } 814 } 815 816 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag) { 817 synchronized (mLock) { 818 int index = findWakeLockIndexLocked(lock); 819 if (index < 0) { 820 if (DEBUG_SPEW) { 821 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 822 + " [not found], ws=" + ws); 823 } 824 throw new IllegalArgumentException("Wake lock not active"); 825 } 826 827 WakeLock wakeLock = mWakeLocks.get(index); 828 if (DEBUG_SPEW) { 829 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 830 + " [" + wakeLock.mTag + "], ws=" + ws); 831 } 832 833 if (!wakeLock.hasSameWorkSource(ws)) { 834 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 835 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 836 ws, historyTag); 837 wakeLock.mHistoryTag = historyTag; 838 wakeLock.updateWorkSource(ws); 839 } 840 } 841 } 842 843 private int findWakeLockIndexLocked(IBinder lock) { 844 final int count = mWakeLocks.size(); 845 for (int i = 0; i < count; i++) { 846 if (mWakeLocks.get(i).mLock == lock) { 847 return i; 848 } 849 } 850 return -1; 851 } 852 853 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 854 if (mSystemReady) { 855 wakeLock.mNotifiedAcquired = true; 856 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 857 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 858 wakeLock.mHistoryTag); 859 } 860 } 861 862 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 863 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 864 if (mSystemReady && wakeLock.mNotifiedAcquired) { 865 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 866 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 867 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 868 } 869 } 870 871 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 872 if (mSystemReady && wakeLock.mNotifiedAcquired) { 873 wakeLock.mNotifiedAcquired = false; 874 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, 875 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 876 wakeLock.mWorkSource, wakeLock.mHistoryTag); 877 } 878 } 879 880 @SuppressWarnings("deprecation") 881 private boolean isWakeLockLevelSupportedInternal(int level) { 882 synchronized (mLock) { 883 switch (level) { 884 case PowerManager.PARTIAL_WAKE_LOCK: 885 case PowerManager.SCREEN_DIM_WAKE_LOCK: 886 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 887 case PowerManager.FULL_WAKE_LOCK: 888 case PowerManager.DOZE_WAKE_LOCK: 889 return true; 890 891 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 892 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 893 894 default: 895 return false; 896 } 897 } 898 } 899 900 // Called from native code. 901 private void userActivityFromNative(long eventTime, int event, int flags) { 902 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 903 } 904 905 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 906 synchronized (mLock) { 907 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 908 updatePowerStateLocked(); 909 } 910 } 911 } 912 913 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 914 if (DEBUG_SPEW) { 915 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 916 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 917 + ", uid=" + uid); 918 } 919 920 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 921 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 922 || !mBootCompleted || !mSystemReady) { 923 return false; 924 } 925 926 mNotifier.onUserActivity(event, uid); 927 928 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 929 if (eventTime > mLastUserActivityTimeNoChangeLights 930 && eventTime > mLastUserActivityTime) { 931 mLastUserActivityTimeNoChangeLights = eventTime; 932 mDirty |= DIRTY_USER_ACTIVITY; 933 return true; 934 } 935 } else { 936 if (eventTime > mLastUserActivityTime) { 937 mLastUserActivityTime = eventTime; 938 mDirty |= DIRTY_USER_ACTIVITY; 939 return true; 940 } 941 } 942 return false; 943 } 944 945 private void wakeUpInternal(long eventTime) { 946 synchronized (mLock) { 947 if (wakeUpNoUpdateLocked(eventTime)) { 948 updatePowerStateLocked(); 949 } 950 } 951 } 952 953 private boolean wakeUpNoUpdateLocked(long eventTime) { 954 if (DEBUG_SPEW) { 955 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 956 } 957 958 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 959 || !mBootCompleted || !mSystemReady) { 960 return false; 961 } 962 963 switch (mWakefulness) { 964 case WAKEFULNESS_ASLEEP: 965 Slog.i(TAG, "Waking up from sleep..."); 966 break; 967 case WAKEFULNESS_DREAMING: 968 Slog.i(TAG, "Waking up from dream..."); 969 break; 970 case WAKEFULNESS_DOZING: 971 Slog.i(TAG, "Waking up from dozing..."); 972 break; 973 } 974 975 mLastWakeTime = eventTime; 976 mDirty |= DIRTY_WAKEFULNESS; 977 mWakefulness = WAKEFULNESS_AWAKE; 978 setInteractiveStateLocked(true, 0); 979 980 userActivityNoUpdateLocked( 981 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 982 return true; 983 } 984 985 private void goToSleepInternal(long eventTime, int reason, int flags) { 986 synchronized (mLock) { 987 if (goToSleepNoUpdateLocked(eventTime, reason, flags)) { 988 updatePowerStateLocked(); 989 } 990 } 991 } 992 993 // This method is called goToSleep for historical reasons but we actually start 994 // dozing before really going to sleep. 995 @SuppressWarnings("deprecation") 996 private boolean goToSleepNoUpdateLocked(long eventTime, int reason, int flags) { 997 if (DEBUG_SPEW) { 998 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime 999 + ", reason=" + reason + ", flags=" + flags); 1000 } 1001 1002 if (eventTime < mLastWakeTime 1003 || mWakefulness == WAKEFULNESS_ASLEEP 1004 || mWakefulness == WAKEFULNESS_DOZING 1005 || !mBootCompleted || !mSystemReady) { 1006 return false; 1007 } 1008 1009 switch (reason) { 1010 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 1011 Slog.i(TAG, "Going to sleep due to device administration policy..."); 1012 break; 1013 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 1014 Slog.i(TAG, "Going to sleep due to screen timeout..."); 1015 break; 1016 default: 1017 Slog.i(TAG, "Going to sleep by user request..."); 1018 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 1019 break; 1020 } 1021 1022 mLastSleepTime = eventTime; 1023 mDirty |= DIRTY_WAKEFULNESS; 1024 mWakefulness = WAKEFULNESS_DOZING; 1025 mSandmanSummoned = true; 1026 setInteractiveStateLocked(false, reason); 1027 1028 // Report the number of wake locks that will be cleared by going to sleep. 1029 int numWakeLocksCleared = 0; 1030 final int numWakeLocks = mWakeLocks.size(); 1031 for (int i = 0; i < numWakeLocks; i++) { 1032 final WakeLock wakeLock = mWakeLocks.get(i); 1033 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1034 case PowerManager.FULL_WAKE_LOCK: 1035 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1036 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1037 numWakeLocksCleared += 1; 1038 break; 1039 } 1040 } 1041 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 1042 1043 // Skip dozing if requested. 1044 if ((flags & PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE) != 0) { 1045 reallyGoToSleepNoUpdateLocked(eventTime); 1046 } 1047 return true; 1048 } 1049 1050 private void napInternal(long eventTime) { 1051 synchronized (mLock) { 1052 if (napNoUpdateLocked(eventTime)) { 1053 updatePowerStateLocked(); 1054 } 1055 } 1056 } 1057 1058 private boolean napNoUpdateLocked(long eventTime) { 1059 if (DEBUG_SPEW) { 1060 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 1061 } 1062 1063 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1064 || !mBootCompleted || !mSystemReady) { 1065 return false; 1066 } 1067 1068 Slog.i(TAG, "Nap time..."); 1069 1070 mDirty |= DIRTY_WAKEFULNESS; 1071 mWakefulness = WAKEFULNESS_DREAMING; 1072 mSandmanSummoned = true; 1073 setInteractiveStateLocked(true, 0); 1074 return true; 1075 } 1076 1077 // Done dozing, drop everything and go to sleep. 1078 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 1079 if (DEBUG_SPEW) { 1080 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 1081 } 1082 1083 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1084 || !mBootCompleted || !mSystemReady) { 1085 return false; 1086 } 1087 1088 Slog.i(TAG, "Sleeping..."); 1089 1090 mDirty |= DIRTY_WAKEFULNESS; 1091 mWakefulness = WAKEFULNESS_ASLEEP; 1092 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1093 return true; 1094 } 1095 1096 private void setInteractiveStateLocked(boolean interactive, int reason) { 1097 if (mInteractive != interactive) { 1098 finishInteractiveStateChangeLocked(); 1099 1100 mInteractive = interactive; 1101 mInteractiveChanging = true; 1102 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1103 } 1104 } 1105 1106 private void finishInteractiveStateChangeLocked() { 1107 if (mInteractiveChanging) { 1108 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1109 mInteractiveChanging = false; 1110 } 1111 } 1112 1113 /** 1114 * Updates the global power state based on dirty bits recorded in mDirty. 1115 * 1116 * This is the main function that performs power state transitions. 1117 * We centralize them here so that we can recompute the power state completely 1118 * each time something important changes, and ensure that we do it the same 1119 * way each time. The point is to gather all of the transition logic here. 1120 */ 1121 private void updatePowerStateLocked() { 1122 if (!mSystemReady || mDirty == 0) { 1123 return; 1124 } 1125 if (!Thread.holdsLock(mLock)) { 1126 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1127 } 1128 1129 // Phase 0: Basic state updates. 1130 updateIsPoweredLocked(mDirty); 1131 updateStayOnLocked(mDirty); 1132 1133 // Phase 1: Update wakefulness. 1134 // Loop because the wake lock and user activity computations are influenced 1135 // by changes in wakefulness. 1136 final long now = SystemClock.uptimeMillis(); 1137 int dirtyPhase2 = 0; 1138 for (;;) { 1139 int dirtyPhase1 = mDirty; 1140 dirtyPhase2 |= dirtyPhase1; 1141 mDirty = 0; 1142 1143 updateWakeLockSummaryLocked(dirtyPhase1); 1144 updateUserActivitySummaryLocked(now, dirtyPhase1); 1145 if (!updateWakefulnessLocked(dirtyPhase1)) { 1146 break; 1147 } 1148 } 1149 1150 // Phase 2: Update dreams and display power state. 1151 updateDreamLocked(dirtyPhase2); 1152 updateDisplayPowerStateLocked(dirtyPhase2); 1153 1154 // Phase 3: Send notifications, if needed. 1155 if (mDisplayReady) { 1156 finishInteractiveStateChangeLocked(); 1157 } 1158 1159 // Phase 4: Update suspend blocker. 1160 // Because we might release the last suspend blocker here, we need to make sure 1161 // we finished everything else first! 1162 updateSuspendBlockerLocked(); 1163 } 1164 1165 /** 1166 * Updates the value of mIsPowered. 1167 * Sets DIRTY_IS_POWERED if a change occurred. 1168 */ 1169 private void updateIsPoweredLocked(int dirty) { 1170 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1171 final boolean wasPowered = mIsPowered; 1172 final int oldPlugType = mPlugType; 1173 final boolean oldLevelLow = mBatteryLevelLow; 1174 mIsPowered = mBatteryManagerInternal.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1175 mPlugType = mBatteryManagerInternal.getPlugType(); 1176 mBatteryLevel = mBatteryManagerInternal.getBatteryLevel(); 1177 mBatteryLevelLow = mBatteryManagerInternal.getBatteryLevelLow(); 1178 1179 if (DEBUG_SPEW) { 1180 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1181 + ", mIsPowered=" + mIsPowered 1182 + ", oldPlugType=" + oldPlugType 1183 + ", mPlugType=" + mPlugType 1184 + ", mBatteryLevel=" + mBatteryLevel); 1185 } 1186 1187 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1188 mDirty |= DIRTY_IS_POWERED; 1189 1190 // Update wireless dock detection state. 1191 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1192 mIsPowered, mPlugType, mBatteryLevel); 1193 1194 // Treat plugging and unplugging the devices as a user activity. 1195 // Users find it disconcerting when they plug or unplug the device 1196 // and it shuts off right away. 1197 // Some devices also wake the device when plugged or unplugged because 1198 // they don't have a charging LED. 1199 final long now = SystemClock.uptimeMillis(); 1200 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1201 dockedOnWirelessCharger)) { 1202 wakeUpNoUpdateLocked(now); 1203 } 1204 userActivityNoUpdateLocked( 1205 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1206 1207 // Tell the notifier whether wireless charging has started so that 1208 // it can provide feedback to the user. 1209 if (dockedOnWirelessCharger) { 1210 mNotifier.onWirelessChargingStarted(); 1211 } 1212 } 1213 1214 if (wasPowered != mIsPowered || oldLevelLow != mBatteryLevelLow) { 1215 updateLowPowerModeLocked(); 1216 } 1217 } 1218 } 1219 1220 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1221 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1222 // Don't wake when powered unless configured to do so. 1223 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1224 return false; 1225 } 1226 1227 // Don't wake when undocked from wireless charger. 1228 // See WirelessChargerDetector for justification. 1229 if (wasPowered && !mIsPowered 1230 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1231 return false; 1232 } 1233 1234 // Don't wake when docked on wireless charger unless we are certain of it. 1235 // See WirelessChargerDetector for justification. 1236 if (!wasPowered && mIsPowered 1237 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1238 && !dockedOnWirelessCharger) { 1239 return false; 1240 } 1241 1242 // If already dreaming and becoming powered, then don't wake. 1243 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1244 return false; 1245 } 1246 1247 // Otherwise wake up! 1248 return true; 1249 } 1250 1251 /** 1252 * Updates the value of mStayOn. 1253 * Sets DIRTY_STAY_ON if a change occurred. 1254 */ 1255 private void updateStayOnLocked(int dirty) { 1256 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1257 final boolean wasStayOn = mStayOn; 1258 if (mStayOnWhilePluggedInSetting != 0 1259 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1260 mStayOn = mBatteryManagerInternal.isPowered(mStayOnWhilePluggedInSetting); 1261 } else { 1262 mStayOn = false; 1263 } 1264 1265 if (mStayOn != wasStayOn) { 1266 mDirty |= DIRTY_STAY_ON; 1267 } 1268 } 1269 } 1270 1271 /** 1272 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1273 * Note that most wake-locks are ignored when the system is asleep. 1274 * 1275 * This function must have no other side-effects. 1276 */ 1277 @SuppressWarnings("deprecation") 1278 private void updateWakeLockSummaryLocked(int dirty) { 1279 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1280 mWakeLockSummary = 0; 1281 1282 final int numWakeLocks = mWakeLocks.size(); 1283 for (int i = 0; i < numWakeLocks; i++) { 1284 final WakeLock wakeLock = mWakeLocks.get(i); 1285 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1286 case PowerManager.PARTIAL_WAKE_LOCK: 1287 mWakeLockSummary |= WAKE_LOCK_CPU; 1288 break; 1289 case PowerManager.FULL_WAKE_LOCK: 1290 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1291 break; 1292 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1293 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1294 break; 1295 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1296 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1297 break; 1298 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1299 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1300 break; 1301 case PowerManager.DOZE_WAKE_LOCK: 1302 mWakeLockSummary |= WAKE_LOCK_DOZE; 1303 break; 1304 } 1305 } 1306 1307 // Cancel wake locks that make no sense based on the current state. 1308 if (mWakefulness != WAKEFULNESS_DOZING) { 1309 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1310 } 1311 if (mWakefulness == WAKEFULNESS_ASLEEP 1312 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1313 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1314 | WAKE_LOCK_BUTTON_BRIGHT); 1315 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1316 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1317 } 1318 } 1319 1320 // Infer implied wake locks where necessary based on the current state. 1321 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1322 if (mWakefulness == WAKEFULNESS_AWAKE) { 1323 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1324 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1325 mWakeLockSummary |= WAKE_LOCK_CPU; 1326 } 1327 } 1328 1329 if (DEBUG_SPEW) { 1330 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1331 + wakefulnessToString(mWakefulness) 1332 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1333 } 1334 } 1335 } 1336 1337 /** 1338 * Updates the value of mUserActivitySummary to summarize the user requested 1339 * state of the system such as whether the screen should be bright or dim. 1340 * Note that user activity is ignored when the system is asleep. 1341 * 1342 * This function must have no other side-effects. 1343 */ 1344 private void updateUserActivitySummaryLocked(long now, int dirty) { 1345 // Update the status of the user activity timeout timer. 1346 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1347 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1348 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1349 1350 long nextTimeout = 0; 1351 if (mWakefulness == WAKEFULNESS_AWAKE 1352 || mWakefulness == WAKEFULNESS_DREAMING 1353 || mWakefulness == WAKEFULNESS_DOZING) { 1354 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1355 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1356 1357 mUserActivitySummary = 0; 1358 if (mLastUserActivityTime >= mLastWakeTime) { 1359 nextTimeout = mLastUserActivityTime 1360 + screenOffTimeout - screenDimDuration; 1361 if (now < nextTimeout) { 1362 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1363 } else { 1364 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1365 if (now < nextTimeout) { 1366 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1367 } 1368 } 1369 } 1370 if (mUserActivitySummary == 0 1371 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1372 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1373 if (now < nextTimeout 1374 && mDisplayPowerRequest.wantScreenOnNormal()) { 1375 mUserActivitySummary = mDisplayPowerRequest.screenState 1376 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1377 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1378 } 1379 } 1380 if (mUserActivitySummary != 0) { 1381 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1382 msg.setAsynchronous(true); 1383 mHandler.sendMessageAtTime(msg, nextTimeout); 1384 } 1385 } else { 1386 mUserActivitySummary = 0; 1387 } 1388 1389 if (DEBUG_SPEW) { 1390 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1391 + wakefulnessToString(mWakefulness) 1392 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1393 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1394 } 1395 } 1396 } 1397 1398 /** 1399 * Called when a user activity timeout has occurred. 1400 * Simply indicates that something about user activity has changed so that the new 1401 * state can be recomputed when the power state is updated. 1402 * 1403 * This function must have no other side-effects besides setting the dirty 1404 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1405 */ 1406 private void handleUserActivityTimeout() { // runs on handler thread 1407 synchronized (mLock) { 1408 if (DEBUG_SPEW) { 1409 Slog.d(TAG, "handleUserActivityTimeout"); 1410 } 1411 1412 mDirty |= DIRTY_USER_ACTIVITY; 1413 updatePowerStateLocked(); 1414 } 1415 } 1416 1417 private int getScreenOffTimeoutLocked() { 1418 int timeout = mScreenOffTimeoutSetting; 1419 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1420 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1421 } 1422 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1423 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1424 } 1425 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1426 } 1427 1428 private int getScreenDimDurationLocked(int screenOffTimeout) { 1429 return Math.min(mMaximumScreenDimDurationConfig, 1430 (int)(screenOffTimeout * mMaximumScreenDimRatioConfig)); 1431 } 1432 1433 /** 1434 * Updates the wakefulness of the device. 1435 * 1436 * This is the function that decides whether the device should start dreaming 1437 * based on the current wake locks and user activity state. It may modify mDirty 1438 * if the wakefulness changes. 1439 * 1440 * Returns true if the wakefulness changed and we need to restart power state calculation. 1441 */ 1442 private boolean updateWakefulnessLocked(int dirty) { 1443 boolean changed = false; 1444 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1445 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1446 | DIRTY_DOCK_STATE)) != 0) { 1447 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1448 if (DEBUG_SPEW) { 1449 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1450 } 1451 final long time = SystemClock.uptimeMillis(); 1452 if (shouldNapAtBedTimeLocked()) { 1453 changed = napNoUpdateLocked(time); 1454 } else { 1455 changed = goToSleepNoUpdateLocked(time, 1456 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0); 1457 } 1458 } 1459 } 1460 return changed; 1461 } 1462 1463 /** 1464 * Returns true if the device should automatically nap and start dreaming when the user 1465 * activity timeout has expired and it's bedtime. 1466 */ 1467 private boolean shouldNapAtBedTimeLocked() { 1468 return mDreamsActivateOnSleepSetting 1469 || (mDreamsActivateOnDockSetting 1470 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1471 } 1472 1473 /** 1474 * Returns true if the device should go to sleep now. 1475 * Also used when exiting a dream to determine whether we should go back 1476 * to being fully awake or else go to sleep for good. 1477 */ 1478 private boolean isItBedTimeYetLocked() { 1479 return mBootCompleted && !isBeingKeptAwakeLocked(); 1480 } 1481 1482 /** 1483 * Returns true if the device is being kept awake by a wake lock, user activity 1484 * or the stay on while powered setting. We also keep the phone awake when 1485 * the proximity sensor returns a positive result so that the device does not 1486 * lock while in a phone call. This function only controls whether the device 1487 * will go to sleep or dream which is independent of whether it will be allowed 1488 * to suspend. 1489 */ 1490 private boolean isBeingKeptAwakeLocked() { 1491 return mStayOn 1492 || mProximityPositive 1493 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1494 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1495 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1496 } 1497 1498 /** 1499 * Determines whether to post a message to the sandman to update the dream state. 1500 */ 1501 private void updateDreamLocked(int dirty) { 1502 if ((dirty & (DIRTY_WAKEFULNESS 1503 | DIRTY_USER_ACTIVITY 1504 | DIRTY_WAKE_LOCKS 1505 | DIRTY_BOOT_COMPLETED 1506 | DIRTY_SETTINGS 1507 | DIRTY_IS_POWERED 1508 | DIRTY_STAY_ON 1509 | DIRTY_PROXIMITY_POSITIVE 1510 | DIRTY_BATTERY_STATE)) != 0) { 1511 scheduleSandmanLocked(); 1512 } 1513 } 1514 1515 private void scheduleSandmanLocked() { 1516 if (!mSandmanScheduled) { 1517 mSandmanScheduled = true; 1518 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1519 msg.setAsynchronous(true); 1520 mHandler.sendMessage(msg); 1521 } 1522 } 1523 1524 /** 1525 * Called when the device enters or exits a dreaming or dozing state. 1526 * 1527 * We do this asynchronously because we must call out of the power manager to start 1528 * the dream and we don't want to hold our lock while doing so. There is a risk that 1529 * the device will wake or go to sleep in the meantime so we have to handle that case. 1530 */ 1531 private void handleSandman() { // runs on handler thread 1532 // Handle preconditions. 1533 final boolean startDreaming; 1534 final int wakefulness; 1535 synchronized (mLock) { 1536 mSandmanScheduled = false; 1537 wakefulness = mWakefulness; 1538 if (mSandmanSummoned) { 1539 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1540 || wakefulness == WAKEFULNESS_DOZING); 1541 mSandmanSummoned = false; 1542 } else { 1543 startDreaming = false; 1544 } 1545 } 1546 1547 // Start dreaming if needed. 1548 // We only control the dream on the handler thread, so we don't need to worry about 1549 // concurrent attempts to start or stop the dream. 1550 final boolean isDreaming; 1551 if (mDreamManager != null) { 1552 // Restart the dream whenever the sandman is summoned. 1553 if (startDreaming) { 1554 mDreamManager.stopDream(); 1555 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1556 } 1557 isDreaming = mDreamManager.isDreaming(); 1558 } else { 1559 isDreaming = false; 1560 } 1561 1562 // Update dream state. 1563 synchronized (mLock) { 1564 // Remember the initial battery level when the dream started. 1565 if (startDreaming && isDreaming) { 1566 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1567 if (wakefulness == WAKEFULNESS_DOZING) { 1568 Slog.i(TAG, "Dozing..."); 1569 } else { 1570 Slog.i(TAG, "Dreaming..."); 1571 } 1572 } 1573 1574 // If preconditions changed, wait for the next iteration to determine 1575 // whether the dream should continue (or be restarted). 1576 if (mSandmanSummoned || mWakefulness != wakefulness) { 1577 return; // wait for next cycle 1578 } 1579 1580 // Determine whether the dream should continue. 1581 if (wakefulness == WAKEFULNESS_DREAMING) { 1582 if (isDreaming && canDreamLocked()) { 1583 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1584 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1585 - mDreamsBatteryLevelDrainCutoffConfig 1586 && !isBeingKeptAwakeLocked()) { 1587 // If the user activity timeout expired and the battery appears 1588 // to be draining faster than it is charging then stop dreaming 1589 // and go to sleep. 1590 Slog.i(TAG, "Stopping dream because the battery appears to " 1591 + "be draining faster than it is charging. " 1592 + "Battery level when dream started: " 1593 + mBatteryLevelWhenDreamStarted + "%. " 1594 + "Battery level now: " + mBatteryLevel + "%."); 1595 } else { 1596 return; // continue dreaming 1597 } 1598 } 1599 1600 // Dream has ended or will be stopped. Update the power state. 1601 if (isItBedTimeYetLocked()) { 1602 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1603 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0); 1604 updatePowerStateLocked(); 1605 } else { 1606 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1607 updatePowerStateLocked(); 1608 } 1609 } else if (wakefulness == WAKEFULNESS_DOZING) { 1610 if (isDreaming) { 1611 return; // continue dozing 1612 } 1613 1614 // Doze has ended or will be stopped. Update the power state. 1615 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1616 updatePowerStateLocked(); 1617 } 1618 } 1619 1620 // Stop dream. 1621 if (isDreaming) { 1622 mDreamManager.stopDream(); 1623 } 1624 } 1625 1626 /** 1627 * Returns true if the device is allowed to dream in its current state. 1628 * This function is not called when dozing. 1629 */ 1630 private boolean canDreamLocked() { 1631 if (mWakefulness != WAKEFULNESS_DREAMING 1632 || !mDreamsSupportedConfig 1633 || !mDreamsEnabledSetting 1634 || !mDisplayPowerRequest.wantScreenOnNormal() 1635 || !mBootCompleted) { 1636 return false; 1637 } 1638 if (!isBeingKeptAwakeLocked()) { 1639 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1640 return false; 1641 } 1642 if (!mIsPowered 1643 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1644 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1645 return false; 1646 } 1647 if (mIsPowered 1648 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1649 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1650 return false; 1651 } 1652 } 1653 return true; 1654 } 1655 1656 private void handleScreenOnBlockerReleased() { 1657 synchronized (mLock) { 1658 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1659 updatePowerStateLocked(); 1660 } 1661 } 1662 1663 /** 1664 * Updates the display power state asynchronously. 1665 * When the update is finished, mDisplayReady will be set to true. The display 1666 * controller posts a message to tell us when the actual display power state 1667 * has been updated so we come back here to double-check and finish up. 1668 * 1669 * This function recalculates the display power state each time. 1670 */ 1671 private void updateDisplayPowerStateLocked(int dirty) { 1672 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1673 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1674 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1675 final int newScreenState = getDesiredScreenPowerStateLocked(); 1676 mDisplayPowerRequest.screenState = newScreenState; 1677 1678 int screenBrightness = mScreenBrightnessSettingDefault; 1679 float screenAutoBrightnessAdjustment = 0.0f; 1680 boolean autoBrightness = (mScreenBrightnessModeSetting == 1681 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1682 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1683 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1684 autoBrightness = false; 1685 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1686 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1687 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1688 screenBrightness = mScreenBrightnessSetting; 1689 } 1690 if (autoBrightness) { 1691 screenBrightness = mScreenBrightnessSettingDefault; 1692 if (isValidAutoBrightnessAdjustment( 1693 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1694 screenAutoBrightnessAdjustment = 1695 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1696 } else if (isValidAutoBrightnessAdjustment( 1697 mScreenAutoBrightnessAdjustmentSetting)) { 1698 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1699 } 1700 } 1701 screenBrightness = Math.max(Math.min(screenBrightness, 1702 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1703 screenAutoBrightnessAdjustment = Math.max(Math.min( 1704 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1705 mDisplayPowerRequest.screenBrightness = screenBrightness; 1706 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1707 screenAutoBrightnessAdjustment; 1708 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1709 1710 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1711 1712 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1713 1714 mDisplayPowerRequest.lowPowerMode = mLowPowerModeEnabled; 1715 1716 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1717 mRequestWaitForNegativeProximity); 1718 mRequestWaitForNegativeProximity = false; 1719 1720 if (DEBUG_SPEW) { 1721 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1722 + ", newScreenState=" + newScreenState 1723 + ", mWakefulness=" + mWakefulness 1724 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1725 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1726 + ", mBootCompleted=" + mBootCompleted); 1727 } 1728 } 1729 } 1730 1731 private static boolean isValidBrightness(int value) { 1732 return value >= 0 && value <= 255; 1733 } 1734 1735 private static boolean isValidAutoBrightnessAdjustment(float value) { 1736 // Handles NaN by always returning false. 1737 return value >= -1.0f && value <= 1.0f; 1738 } 1739 1740 private int getDesiredScreenPowerStateLocked() { 1741 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1742 return DisplayPowerRequest.SCREEN_STATE_OFF; 1743 } 1744 1745 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1746 return DisplayPowerRequest.SCREEN_STATE_DOZE; 1747 } 1748 1749 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1750 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1751 || !mBootCompleted) { 1752 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1753 } 1754 1755 return DisplayPowerRequest.SCREEN_STATE_DIM; 1756 } 1757 1758 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1759 new DisplayManagerInternal.DisplayPowerCallbacks() { 1760 private int mDisplayState = Display.STATE_UNKNOWN; 1761 1762 @Override 1763 public void onStateChanged() { 1764 synchronized (mLock) { 1765 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1766 updatePowerStateLocked(); 1767 } 1768 } 1769 1770 @Override 1771 public void onProximityPositive() { 1772 synchronized (mLock) { 1773 mProximityPositive = true; 1774 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1775 updatePowerStateLocked(); 1776 } 1777 } 1778 1779 @Override 1780 public void onProximityNegative() { 1781 synchronized (mLock) { 1782 mProximityPositive = false; 1783 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1784 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1785 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1786 updatePowerStateLocked(); 1787 } 1788 } 1789 1790 @Override 1791 public void onDisplayStateChange(int state) { 1792 // This method is only needed to support legacy display blanking behavior 1793 // where the display's power state is coupled to suspend or to the power HAL. 1794 // The order of operations matters here. 1795 synchronized (mLock) { 1796 if (mDisplayState != state) { 1797 mDisplayState = state; 1798 if (state == Display.STATE_OFF) { 1799 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1800 setHalInteractiveModeLocked(false); 1801 } 1802 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1803 setHalAutoSuspendModeLocked(true); 1804 } 1805 } else { 1806 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1807 setHalAutoSuspendModeLocked(false); 1808 } 1809 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1810 setHalInteractiveModeLocked(true); 1811 } 1812 } 1813 } 1814 } 1815 } 1816 1817 @Override 1818 public void acquireSuspendBlocker() { 1819 mDisplaySuspendBlocker.acquire(); 1820 } 1821 1822 @Override 1823 public void releaseSuspendBlocker() { 1824 mDisplaySuspendBlocker.release(); 1825 } 1826 1827 @Override 1828 public String toString() { 1829 synchronized (this) { 1830 return "state=" + Display.stateToString(mDisplayState); 1831 } 1832 } 1833 }; 1834 1835 private boolean shouldUseProximitySensorLocked() { 1836 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1837 } 1838 1839 /** 1840 * Updates the suspend blocker that keeps the CPU alive. 1841 * 1842 * This function must have no other side-effects. 1843 */ 1844 private void updateSuspendBlockerLocked() { 1845 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1846 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1847 final boolean autoSuspend = !needDisplaySuspendBlocker; 1848 1849 // Disable auto-suspend if needed. 1850 if (!autoSuspend) { 1851 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1852 setHalAutoSuspendModeLocked(false); 1853 } 1854 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1855 setHalInteractiveModeLocked(true); 1856 } 1857 } 1858 1859 // First acquire suspend blockers if needed. 1860 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1861 mWakeLockSuspendBlocker.acquire(); 1862 mHoldingWakeLockSuspendBlocker = true; 1863 } 1864 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1865 mDisplaySuspendBlocker.acquire(); 1866 mHoldingDisplaySuspendBlocker = true; 1867 } 1868 1869 // Then release suspend blockers if needed. 1870 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1871 mWakeLockSuspendBlocker.release(); 1872 mHoldingWakeLockSuspendBlocker = false; 1873 } 1874 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1875 mDisplaySuspendBlocker.release(); 1876 mHoldingDisplaySuspendBlocker = false; 1877 } 1878 1879 // Enable auto-suspend if needed. 1880 if (autoSuspend) { 1881 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1882 setHalInteractiveModeLocked(false); 1883 } 1884 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1885 setHalAutoSuspendModeLocked(true); 1886 } 1887 } 1888 } 1889 1890 /** 1891 * Return true if we must keep a suspend blocker active on behalf of the display. 1892 * We do so if the screen is on or is in transition between states. 1893 */ 1894 private boolean needDisplaySuspendBlockerLocked() { 1895 if (!mDisplayReady) { 1896 return true; 1897 } 1898 if (mDisplayPowerRequest.wantScreenOnNormal()) { 1899 // If we asked for the screen to be on but it is off due to the proximity 1900 // sensor then we may suspend but only if the configuration allows it. 1901 // On some hardware it may not be safe to suspend because the proximity 1902 // sensor may not be correctly configured as a wake-up source. 1903 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1904 || !mSuspendWhenScreenOffDueToProximityConfig) { 1905 return true; 1906 } 1907 } 1908 // Let the system suspend if the screen is off or dozing. 1909 return false; 1910 } 1911 1912 private void setHalAutoSuspendModeLocked(boolean enable) { 1913 if (enable != mHalAutoSuspendModeEnabled) { 1914 if (DEBUG) { 1915 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 1916 } 1917 mHalAutoSuspendModeEnabled = enable; 1918 nativeSetAutoSuspend(enable); 1919 } 1920 } 1921 1922 private void setHalInteractiveModeLocked(boolean enable) { 1923 if (enable != mHalInteractiveModeEnabled) { 1924 if (DEBUG) { 1925 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 1926 } 1927 mHalInteractiveModeEnabled = enable; 1928 nativeSetInteractive(enable); 1929 } 1930 } 1931 1932 private boolean isInteractiveInternal() { 1933 synchronized (mLock) { 1934 return mInteractive; 1935 } 1936 } 1937 1938 private boolean isLowPowerModeInternal() { 1939 synchronized (mLock) { 1940 return mLowPowerModeEnabled; 1941 } 1942 } 1943 1944 private void handleBatteryStateChangedLocked() { 1945 mDirty |= DIRTY_BATTERY_STATE; 1946 updatePowerStateLocked(); 1947 } 1948 1949 private void startWatchingForBootAnimationFinished() { 1950 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1951 } 1952 1953 private void checkIfBootAnimationFinished() { 1954 if (DEBUG) { 1955 Slog.d(TAG, "Check if boot animation finished..."); 1956 } 1957 1958 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1959 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1960 BOOT_ANIMATION_POLL_INTERVAL); 1961 return; 1962 } 1963 1964 synchronized (mLock) { 1965 if (!mBootCompleted) { 1966 Slog.i(TAG, "Boot animation finished."); 1967 handleBootCompletedLocked(); 1968 } 1969 } 1970 } 1971 1972 private void handleBootCompletedLocked() { 1973 final long now = SystemClock.uptimeMillis(); 1974 mBootCompleted = true; 1975 mDirty |= DIRTY_BOOT_COMPLETED; 1976 userActivityNoUpdateLocked( 1977 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1978 updatePowerStateLocked(); 1979 } 1980 1981 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1982 final String reason, boolean wait) { 1983 if (mHandler == null || !mSystemReady) { 1984 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1985 } 1986 1987 Runnable runnable = new Runnable() { 1988 @Override 1989 public void run() { 1990 synchronized (this) { 1991 if (shutdown) { 1992 ShutdownThread.shutdown(mContext, confirm); 1993 } else { 1994 ShutdownThread.reboot(mContext, reason, confirm); 1995 } 1996 } 1997 } 1998 }; 1999 2000 // ShutdownThread must run on a looper capable of displaying the UI. 2001 Message msg = Message.obtain(mHandler, runnable); 2002 msg.setAsynchronous(true); 2003 mHandler.sendMessage(msg); 2004 2005 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 2006 if (wait) { 2007 synchronized (runnable) { 2008 while (true) { 2009 try { 2010 runnable.wait(); 2011 } catch (InterruptedException e) { 2012 } 2013 } 2014 } 2015 } 2016 } 2017 2018 private void crashInternal(final String message) { 2019 Thread t = new Thread("PowerManagerService.crash()") { 2020 @Override 2021 public void run() { 2022 throw new RuntimeException(message); 2023 } 2024 }; 2025 try { 2026 t.start(); 2027 t.join(); 2028 } catch (InterruptedException e) { 2029 Log.wtf(TAG, e); 2030 } 2031 } 2032 2033 private void setStayOnSettingInternal(int val) { 2034 Settings.Global.putInt(mContext.getContentResolver(), 2035 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 2036 } 2037 2038 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 2039 synchronized (mLock) { 2040 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 2041 mDirty |= DIRTY_SETTINGS; 2042 updatePowerStateLocked(); 2043 } 2044 } 2045 2046 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 2047 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 2048 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 2049 } 2050 2051 private void setAttentionLightInternal(boolean on, int color) { 2052 Light light; 2053 synchronized (mLock) { 2054 if (!mSystemReady) { 2055 return; 2056 } 2057 light = mAttentionLight; 2058 } 2059 2060 // Control light outside of lock. 2061 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 2062 } 2063 2064 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 2065 synchronized (mLock) { 2066 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 2067 mScreenBrightnessOverrideFromWindowManager = brightness; 2068 mDirty |= DIRTY_SETTINGS; 2069 updatePowerStateLocked(); 2070 } 2071 } 2072 } 2073 2074 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 2075 synchronized (mLock) { 2076 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 2077 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 2078 mDirty |= DIRTY_SETTINGS; 2079 updatePowerStateLocked(); 2080 } 2081 } 2082 } 2083 2084 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2085 synchronized (mLock) { 2086 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2087 mTemporaryScreenBrightnessSettingOverride = brightness; 2088 mDirty |= DIRTY_SETTINGS; 2089 updatePowerStateLocked(); 2090 } 2091 } 2092 } 2093 2094 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2095 synchronized (mLock) { 2096 // Note: This condition handles NaN because NaN is not equal to any other 2097 // value, including itself. 2098 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2099 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2100 mDirty |= DIRTY_SETTINGS; 2101 updatePowerStateLocked(); 2102 } 2103 } 2104 } 2105 2106 private void powerHintInternal(int hintId, int data) { 2107 nativeSendPowerHint(hintId, data); 2108 } 2109 2110 private static void setSurfaceFlingerLowPowerMode(int enabled) { 2111 try { 2112 final IBinder flinger = ServiceManager.getService("SurfaceFlinger"); 2113 if (flinger != null) { 2114 final Parcel data = Parcel.obtain(); 2115 data.writeInterfaceToken("android.ui.ISurfaceComposer"); 2116 data.writeInt(enabled); 2117 flinger.transact(1016, data, null, 0); 2118 data.recycle(); 2119 } 2120 } catch (RemoteException ex) { 2121 Slog.e(TAG, "Failed to reduce refresh rate", ex); 2122 } 2123 } 2124 2125 /** 2126 * Low-level function turn the device off immediately, without trying 2127 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2128 */ 2129 public static void lowLevelShutdown() { 2130 SystemProperties.set("sys.powerctl", "shutdown"); 2131 } 2132 2133 /** 2134 * Low-level function to reboot the device. On success, this 2135 * function doesn't return. If more than 20 seconds passes from 2136 * the time a reboot is requested (120 seconds for reboot to 2137 * recovery), this method returns. 2138 * 2139 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2140 */ 2141 public static void lowLevelReboot(String reason) { 2142 if (reason == null) { 2143 reason = ""; 2144 } 2145 long duration; 2146 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2147 // If we are rebooting to go into recovery, instead of 2148 // setting sys.powerctl directly we'll start the 2149 // pre-recovery service which will do some preparation for 2150 // recovery and then reboot for us. 2151 // 2152 // This preparation can take more than 20 seconds if 2153 // there's a very large update package, so lengthen the 2154 // timeout. 2155 SystemProperties.set("ctl.start", "pre-recovery"); 2156 duration = 120 * 1000L; 2157 } else { 2158 SystemProperties.set("sys.powerctl", "reboot," + reason); 2159 duration = 20 * 1000L; 2160 } 2161 try { 2162 Thread.sleep(duration); 2163 } catch (InterruptedException e) { 2164 Thread.currentThread().interrupt(); 2165 } 2166 } 2167 2168 @Override // Watchdog.Monitor implementation 2169 public void monitor() { 2170 // Grab and release lock for watchdog monitor to detect deadlocks. 2171 synchronized (mLock) { 2172 } 2173 } 2174 2175 private void dumpInternal(PrintWriter pw) { 2176 pw.println("POWER MANAGER (dumpsys power)\n"); 2177 2178 final WirelessChargerDetector wcd; 2179 synchronized (mLock) { 2180 pw.println("Power Manager State:"); 2181 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2182 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2183 pw.println(" mInteractive=" + mInteractive); 2184 pw.println(" mIsPowered=" + mIsPowered); 2185 pw.println(" mPlugType=" + mPlugType); 2186 pw.println(" mBatteryLevel=" + mBatteryLevel); 2187 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2188 pw.println(" mDockState=" + mDockState); 2189 pw.println(" mStayOn=" + mStayOn); 2190 pw.println(" mProximityPositive=" + mProximityPositive); 2191 pw.println(" mBootCompleted=" + mBootCompleted); 2192 pw.println(" mSystemReady=" + mSystemReady); 2193 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2194 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2195 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2196 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2197 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2198 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2199 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2200 pw.println(" mLowPowerModeEnabled=" + mLowPowerModeEnabled); 2201 pw.println(" mBatteryLevelLow=" + mBatteryLevelLow); 2202 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2203 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2204 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2205 pw.println(" mLastUserActivityTimeNoChangeLights=" 2206 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2207 pw.println(" mDisplayReady=" + mDisplayReady); 2208 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2209 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2210 2211 pw.println(); 2212 pw.println("Settings and Configuration:"); 2213 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2214 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2215 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2216 + mDecoupleHalInteractiveModeFromDisplayConfig); 2217 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2218 + mWakeUpWhenPluggedOrUnpluggedConfig); 2219 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2220 + mSuspendWhenScreenOffDueToProximityConfig); 2221 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2222 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2223 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2224 + mDreamsActivatedOnSleepByDefaultConfig); 2225 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2226 + mDreamsActivatedOnDockByDefaultConfig); 2227 pw.println(" mDreamsEnabledOnBatteryConfig=" 2228 + mDreamsEnabledOnBatteryConfig); 2229 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2230 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2231 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2232 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2233 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2234 + mDreamsBatteryLevelDrainCutoffConfig); 2235 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2236 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2237 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2238 pw.println(" mLowPowerModeSetting=" + mLowPowerModeSetting); 2239 pw.println(" mAutoLowPowerModeEnabled=" + mAutoLowPowerModeEnabled); 2240 pw.println(" mMinimumScreenOffTimeoutConfig=" + mMinimumScreenOffTimeoutConfig); 2241 pw.println(" mMaximumScreenDimDurationConfig=" + mMaximumScreenDimDurationConfig); 2242 pw.println(" mMaximumScreenDimRatioConfig=" + mMaximumScreenDimRatioConfig); 2243 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2244 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2245 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2246 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2247 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2248 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2249 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2250 + mScreenAutoBrightnessAdjustmentSetting); 2251 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2252 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2253 + mScreenBrightnessOverrideFromWindowManager); 2254 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2255 + mUserActivityTimeoutOverrideFromWindowManager); 2256 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2257 + mTemporaryScreenBrightnessSettingOverride); 2258 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2259 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2260 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2261 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2262 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2263 2264 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2265 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2266 pw.println(); 2267 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2268 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2269 2270 pw.println(); 2271 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2272 for (WakeLock wl : mWakeLocks) { 2273 pw.println(" " + wl); 2274 } 2275 2276 pw.println(); 2277 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2278 for (SuspendBlocker sb : mSuspendBlockers) { 2279 pw.println(" " + sb); 2280 } 2281 2282 pw.println(); 2283 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2284 2285 pw.println(); 2286 pw.println("Display Power: " + mDisplayPowerCallbacks); 2287 2288 wcd = mWirelessChargerDetector; 2289 } 2290 2291 if (wcd != null) { 2292 wcd.dump(pw); 2293 } 2294 } 2295 2296 private SuspendBlocker createSuspendBlockerLocked(String name) { 2297 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2298 mSuspendBlockers.add(suspendBlocker); 2299 return suspendBlocker; 2300 } 2301 2302 private static String wakefulnessToString(int wakefulness) { 2303 switch (wakefulness) { 2304 case WAKEFULNESS_ASLEEP: 2305 return "Asleep"; 2306 case WAKEFULNESS_AWAKE: 2307 return "Awake"; 2308 case WAKEFULNESS_DREAMING: 2309 return "Dreaming"; 2310 case WAKEFULNESS_DOZING: 2311 return "Dozing"; 2312 default: 2313 return Integer.toString(wakefulness); 2314 } 2315 } 2316 2317 private static WorkSource copyWorkSource(WorkSource workSource) { 2318 return workSource != null ? new WorkSource(workSource) : null; 2319 } 2320 2321 private final class BatteryReceiver extends BroadcastReceiver { 2322 @Override 2323 public void onReceive(Context context, Intent intent) { 2324 synchronized (mLock) { 2325 handleBatteryStateChangedLocked(); 2326 } 2327 } 2328 } 2329 2330 private final class BootCompletedReceiver extends BroadcastReceiver { 2331 @Override 2332 public void onReceive(Context context, Intent intent) { 2333 // This is our early signal that the system thinks it has finished booting. 2334 // However, the boot animation may still be running for a few more seconds 2335 // since it is ultimately in charge of when it terminates. 2336 // Defer transitioning into the boot completed state until the animation exits. 2337 // We do this so that the screen does not start to dim prematurely before 2338 // the user has actually had a chance to interact with the device. 2339 startWatchingForBootAnimationFinished(); 2340 } 2341 } 2342 2343 private final class DreamReceiver extends BroadcastReceiver { 2344 @Override 2345 public void onReceive(Context context, Intent intent) { 2346 synchronized (mLock) { 2347 scheduleSandmanLocked(); 2348 } 2349 } 2350 } 2351 2352 private final class UserSwitchedReceiver extends BroadcastReceiver { 2353 @Override 2354 public void onReceive(Context context, Intent intent) { 2355 synchronized (mLock) { 2356 handleSettingsChangedLocked(); 2357 } 2358 } 2359 } 2360 2361 private final class DockReceiver extends BroadcastReceiver { 2362 @Override 2363 public void onReceive(Context context, Intent intent) { 2364 synchronized (mLock) { 2365 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2366 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2367 if (mDockState != dockState) { 2368 mDockState = dockState; 2369 mDirty |= DIRTY_DOCK_STATE; 2370 updatePowerStateLocked(); 2371 } 2372 } 2373 } 2374 } 2375 2376 private final class SettingsObserver extends ContentObserver { 2377 public SettingsObserver(Handler handler) { 2378 super(handler); 2379 } 2380 2381 @Override 2382 public void onChange(boolean selfChange, Uri uri) { 2383 synchronized (mLock) { 2384 handleSettingsChangedLocked(); 2385 } 2386 } 2387 } 2388 2389 /** 2390 * Handler for asynchronous operations performed by the power manager. 2391 */ 2392 private final class PowerManagerHandler extends Handler { 2393 public PowerManagerHandler(Looper looper) { 2394 super(looper, null, true /*async*/); 2395 } 2396 2397 @Override 2398 public void handleMessage(Message msg) { 2399 switch (msg.what) { 2400 case MSG_USER_ACTIVITY_TIMEOUT: 2401 handleUserActivityTimeout(); 2402 break; 2403 case MSG_SANDMAN: 2404 handleSandman(); 2405 break; 2406 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2407 handleScreenOnBlockerReleased(); 2408 break; 2409 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2410 checkIfBootAnimationFinished(); 2411 break; 2412 } 2413 } 2414 } 2415 2416 /** 2417 * Represents a wake lock that has been acquired by an application. 2418 */ 2419 private final class WakeLock implements IBinder.DeathRecipient { 2420 public final IBinder mLock; 2421 public int mFlags; 2422 public String mTag; 2423 public final String mPackageName; 2424 public WorkSource mWorkSource; 2425 public String mHistoryTag; 2426 public final int mOwnerUid; 2427 public final int mOwnerPid; 2428 public boolean mNotifiedAcquired; 2429 2430 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2431 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2432 mLock = lock; 2433 mFlags = flags; 2434 mTag = tag; 2435 mPackageName = packageName; 2436 mWorkSource = copyWorkSource(workSource); 2437 mHistoryTag = historyTag; 2438 mOwnerUid = ownerUid; 2439 mOwnerPid = ownerPid; 2440 } 2441 2442 @Override 2443 public void binderDied() { 2444 PowerManagerService.this.handleWakeLockDeath(this); 2445 } 2446 2447 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2448 int ownerUid, int ownerPid) { 2449 return mFlags == flags 2450 && mTag.equals(tag) 2451 && hasSameWorkSource(workSource) 2452 && mOwnerUid == ownerUid 2453 && mOwnerPid == ownerPid; 2454 } 2455 2456 public void updateProperties(int flags, String tag, String packageName, 2457 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2458 if (!mPackageName.equals(packageName)) { 2459 throw new IllegalStateException("Existing wake lock package name changed: " 2460 + mPackageName + " to " + packageName); 2461 } 2462 if (mOwnerUid != ownerUid) { 2463 throw new IllegalStateException("Existing wake lock uid changed: " 2464 + mOwnerUid + " to " + ownerUid); 2465 } 2466 if (mOwnerPid != ownerPid) { 2467 throw new IllegalStateException("Existing wake lock pid changed: " 2468 + mOwnerPid + " to " + ownerPid); 2469 } 2470 mFlags = flags; 2471 mTag = tag; 2472 updateWorkSource(workSource); 2473 mHistoryTag = historyTag; 2474 } 2475 2476 public boolean hasSameWorkSource(WorkSource workSource) { 2477 return Objects.equal(mWorkSource, workSource); 2478 } 2479 2480 public void updateWorkSource(WorkSource workSource) { 2481 mWorkSource = copyWorkSource(workSource); 2482 } 2483 2484 @Override 2485 public String toString() { 2486 return getLockLevelString() 2487 + " '" + mTag + "'" + getLockFlagsString() 2488 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2489 } 2490 2491 @SuppressWarnings("deprecation") 2492 private String getLockLevelString() { 2493 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2494 case PowerManager.FULL_WAKE_LOCK: 2495 return "FULL_WAKE_LOCK "; 2496 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2497 return "SCREEN_BRIGHT_WAKE_LOCK "; 2498 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2499 return "SCREEN_DIM_WAKE_LOCK "; 2500 case PowerManager.PARTIAL_WAKE_LOCK: 2501 return "PARTIAL_WAKE_LOCK "; 2502 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2503 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2504 case PowerManager.DOZE_WAKE_LOCK: 2505 return "DOZE_WAKE_LOCK "; 2506 default: 2507 return "??? "; 2508 } 2509 } 2510 2511 private String getLockFlagsString() { 2512 String result = ""; 2513 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2514 result += " ACQUIRE_CAUSES_WAKEUP"; 2515 } 2516 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2517 result += " ON_AFTER_RELEASE"; 2518 } 2519 return result; 2520 } 2521 } 2522 2523 private final class SuspendBlockerImpl implements SuspendBlocker { 2524 private final String mName; 2525 private int mReferenceCount; 2526 2527 public SuspendBlockerImpl(String name) { 2528 mName = name; 2529 } 2530 2531 @Override 2532 protected void finalize() throws Throwable { 2533 try { 2534 if (mReferenceCount != 0) { 2535 Log.wtf(TAG, "Suspend blocker \"" + mName 2536 + "\" was finalized without being released!"); 2537 mReferenceCount = 0; 2538 nativeReleaseSuspendBlocker(mName); 2539 } 2540 } finally { 2541 super.finalize(); 2542 } 2543 } 2544 2545 @Override 2546 public void acquire() { 2547 synchronized (this) { 2548 mReferenceCount += 1; 2549 if (mReferenceCount == 1) { 2550 if (DEBUG_SPEW) { 2551 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2552 } 2553 nativeAcquireSuspendBlocker(mName); 2554 } 2555 } 2556 } 2557 2558 @Override 2559 public void release() { 2560 synchronized (this) { 2561 mReferenceCount -= 1; 2562 if (mReferenceCount == 0) { 2563 if (DEBUG_SPEW) { 2564 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2565 } 2566 nativeReleaseSuspendBlocker(mName); 2567 } else if (mReferenceCount < 0) { 2568 Log.wtf(TAG, "Suspend blocker \"" + mName 2569 + "\" was released without being acquired!", new Throwable()); 2570 mReferenceCount = 0; 2571 } 2572 } 2573 } 2574 2575 @Override 2576 public String toString() { 2577 synchronized (this) { 2578 return mName + ": ref count=" + mReferenceCount; 2579 } 2580 } 2581 } 2582 2583 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2584 private int mNestCount; 2585 2586 public boolean isHeld() { 2587 synchronized (this) { 2588 return mNestCount != 0; 2589 } 2590 } 2591 2592 @Override 2593 public void acquire() { 2594 synchronized (this) { 2595 mNestCount += 1; 2596 if (DEBUG) { 2597 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2598 } 2599 } 2600 } 2601 2602 @Override 2603 public void release() { 2604 synchronized (this) { 2605 mNestCount -= 1; 2606 if (mNestCount < 0) { 2607 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2608 new Throwable()); 2609 mNestCount = 0; 2610 } 2611 if (mNestCount == 0) { 2612 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2613 } 2614 if (DEBUG) { 2615 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2616 } 2617 } 2618 } 2619 2620 @Override 2621 public String toString() { 2622 synchronized (this) { 2623 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2624 } 2625 } 2626 } 2627 2628 private final class BinderService extends IPowerManager.Stub { 2629 @Override // Binder call 2630 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2631 String packageName, int uid) { 2632 if (uid < 0) { 2633 uid = Binder.getCallingUid(); 2634 } 2635 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2636 } 2637 2638 @Override // Binder call 2639 public void powerHint(int hintId, int data) { 2640 if (!mSystemReady) { 2641 // Service not ready yet, so who the heck cares about power hints, bah. 2642 return; 2643 } 2644 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2645 powerHintInternal(hintId, data); 2646 } 2647 2648 @Override // Binder call 2649 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2650 WorkSource ws, String historyTag) { 2651 if (lock == null) { 2652 throw new IllegalArgumentException("lock must not be null"); 2653 } 2654 if (packageName == null) { 2655 throw new IllegalArgumentException("packageName must not be null"); 2656 } 2657 PowerManager.validateWakeLockParameters(flags, tag); 2658 2659 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2660 if (ws != null && ws.size() != 0) { 2661 mContext.enforceCallingOrSelfPermission( 2662 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2663 } else { 2664 ws = null; 2665 } 2666 2667 final int uid = Binder.getCallingUid(); 2668 final int pid = Binder.getCallingPid(); 2669 final long ident = Binder.clearCallingIdentity(); 2670 try { 2671 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2672 } finally { 2673 Binder.restoreCallingIdentity(ident); 2674 } 2675 } 2676 2677 @Override // Binder call 2678 public void releaseWakeLock(IBinder lock, int flags) { 2679 if (lock == null) { 2680 throw new IllegalArgumentException("lock must not be null"); 2681 } 2682 2683 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2684 2685 final long ident = Binder.clearCallingIdentity(); 2686 try { 2687 releaseWakeLockInternal(lock, flags); 2688 } finally { 2689 Binder.restoreCallingIdentity(ident); 2690 } 2691 } 2692 2693 @Override // Binder call 2694 public void updateWakeLockUids(IBinder lock, int[] uids) { 2695 WorkSource ws = null; 2696 2697 if (uids != null) { 2698 ws = new WorkSource(); 2699 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2700 // one at a time? 2701 for (int i = 0; i < uids.length; i++) { 2702 ws.add(uids[i]); 2703 } 2704 } 2705 updateWakeLockWorkSource(lock, ws, null); 2706 } 2707 2708 @Override // Binder call 2709 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2710 if (lock == null) { 2711 throw new IllegalArgumentException("lock must not be null"); 2712 } 2713 2714 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2715 if (ws != null && ws.size() != 0) { 2716 mContext.enforceCallingOrSelfPermission( 2717 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2718 } else { 2719 ws = null; 2720 } 2721 2722 final long ident = Binder.clearCallingIdentity(); 2723 try { 2724 updateWakeLockWorkSourceInternal(lock, ws, historyTag); 2725 } finally { 2726 Binder.restoreCallingIdentity(ident); 2727 } 2728 } 2729 2730 @Override // Binder call 2731 public boolean isWakeLockLevelSupported(int level) { 2732 final long ident = Binder.clearCallingIdentity(); 2733 try { 2734 return isWakeLockLevelSupportedInternal(level); 2735 } finally { 2736 Binder.restoreCallingIdentity(ident); 2737 } 2738 } 2739 2740 @Override // Binder call 2741 public void userActivity(long eventTime, int event, int flags) { 2742 final long now = SystemClock.uptimeMillis(); 2743 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2744 != PackageManager.PERMISSION_GRANTED) { 2745 // Once upon a time applications could call userActivity(). 2746 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2747 // request instead of throwing a SecurityException so we don't break old apps. 2748 synchronized (mLock) { 2749 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2750 mLastWarningAboutUserActivityPermission = now; 2751 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2752 + "caller does not have DEVICE_POWER permission. " 2753 + "Please fix your app! " 2754 + " pid=" + Binder.getCallingPid() 2755 + " uid=" + Binder.getCallingUid()); 2756 } 2757 } 2758 return; 2759 } 2760 2761 if (eventTime > SystemClock.uptimeMillis()) { 2762 throw new IllegalArgumentException("event time must not be in the future"); 2763 } 2764 2765 final int uid = Binder.getCallingUid(); 2766 final long ident = Binder.clearCallingIdentity(); 2767 try { 2768 userActivityInternal(eventTime, event, flags, uid); 2769 } finally { 2770 Binder.restoreCallingIdentity(ident); 2771 } 2772 } 2773 2774 @Override // Binder call 2775 public void wakeUp(long eventTime) { 2776 if (eventTime > SystemClock.uptimeMillis()) { 2777 throw new IllegalArgumentException("event time must not be in the future"); 2778 } 2779 2780 mContext.enforceCallingOrSelfPermission( 2781 android.Manifest.permission.DEVICE_POWER, null); 2782 2783 final long ident = Binder.clearCallingIdentity(); 2784 try { 2785 wakeUpInternal(eventTime); 2786 } finally { 2787 Binder.restoreCallingIdentity(ident); 2788 } 2789 } 2790 2791 @Override // Binder call 2792 public void goToSleep(long eventTime, int reason, int flags) { 2793 if (eventTime > SystemClock.uptimeMillis()) { 2794 throw new IllegalArgumentException("event time must not be in the future"); 2795 } 2796 2797 mContext.enforceCallingOrSelfPermission( 2798 android.Manifest.permission.DEVICE_POWER, null); 2799 2800 final long ident = Binder.clearCallingIdentity(); 2801 try { 2802 goToSleepInternal(eventTime, reason, flags); 2803 } finally { 2804 Binder.restoreCallingIdentity(ident); 2805 } 2806 } 2807 2808 @Override // Binder call 2809 public void nap(long eventTime) { 2810 if (eventTime > SystemClock.uptimeMillis()) { 2811 throw new IllegalArgumentException("event time must not be in the future"); 2812 } 2813 2814 mContext.enforceCallingOrSelfPermission( 2815 android.Manifest.permission.DEVICE_POWER, null); 2816 2817 final long ident = Binder.clearCallingIdentity(); 2818 try { 2819 napInternal(eventTime); 2820 } finally { 2821 Binder.restoreCallingIdentity(ident); 2822 } 2823 } 2824 2825 @Override // Binder call 2826 public boolean isInteractive() { 2827 final long ident = Binder.clearCallingIdentity(); 2828 try { 2829 return isInteractiveInternal(); 2830 } finally { 2831 Binder.restoreCallingIdentity(ident); 2832 } 2833 } 2834 2835 @Override // Binder call 2836 public boolean isPowerSaveMode() { 2837 final long ident = Binder.clearCallingIdentity(); 2838 try { 2839 return isLowPowerModeInternal(); 2840 } finally { 2841 Binder.restoreCallingIdentity(ident); 2842 } 2843 } 2844 2845 /** 2846 * Reboots the device. 2847 * 2848 * @param confirm If true, shows a reboot confirmation dialog. 2849 * @param reason The reason for the reboot, or null if none. 2850 * @param wait If true, this call waits for the reboot to complete and does not return. 2851 */ 2852 @Override // Binder call 2853 public void reboot(boolean confirm, String reason, boolean wait) { 2854 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2855 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2856 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2857 } 2858 2859 final long ident = Binder.clearCallingIdentity(); 2860 try { 2861 shutdownOrRebootInternal(false, confirm, reason, wait); 2862 } finally { 2863 Binder.restoreCallingIdentity(ident); 2864 } 2865 } 2866 2867 /** 2868 * Shuts down the device. 2869 * 2870 * @param confirm If true, shows a shutdown confirmation dialog. 2871 * @param wait If true, this call waits for the shutdown to complete and does not return. 2872 */ 2873 @Override // Binder call 2874 public void shutdown(boolean confirm, boolean wait) { 2875 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2876 2877 final long ident = Binder.clearCallingIdentity(); 2878 try { 2879 shutdownOrRebootInternal(true, confirm, null, wait); 2880 } finally { 2881 Binder.restoreCallingIdentity(ident); 2882 } 2883 } 2884 2885 /** 2886 * Crash the runtime (causing a complete restart of the Android framework). 2887 * Requires REBOOT permission. Mostly for testing. Should not return. 2888 */ 2889 @Override // Binder call 2890 public void crash(String message) { 2891 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2892 2893 final long ident = Binder.clearCallingIdentity(); 2894 try { 2895 crashInternal(message); 2896 } finally { 2897 Binder.restoreCallingIdentity(ident); 2898 } 2899 } 2900 2901 /** 2902 * Set the setting that determines whether the device stays on when plugged in. 2903 * The argument is a bit string, with each bit specifying a power source that, 2904 * when the device is connected to that source, causes the device to stay on. 2905 * See {@link android.os.BatteryManager} for the list of power sources that 2906 * can be specified. Current values include 2907 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2908 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2909 * 2910 * Used by "adb shell svc power stayon ..." 2911 * 2912 * @param val an {@code int} containing the bits that specify which power sources 2913 * should cause the device to stay on. 2914 */ 2915 @Override // Binder call 2916 public void setStayOnSetting(int val) { 2917 mContext.enforceCallingOrSelfPermission( 2918 android.Manifest.permission.WRITE_SETTINGS, null); 2919 2920 final long ident = Binder.clearCallingIdentity(); 2921 try { 2922 setStayOnSettingInternal(val); 2923 } finally { 2924 Binder.restoreCallingIdentity(ident); 2925 } 2926 } 2927 2928 /** 2929 * Used by device administration to set the maximum screen off timeout. 2930 * 2931 * This method must only be called by the device administration policy manager. 2932 */ 2933 @Override // Binder call 2934 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2935 final long ident = Binder.clearCallingIdentity(); 2936 try { 2937 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2938 } finally { 2939 Binder.restoreCallingIdentity(ident); 2940 } 2941 } 2942 2943 /** 2944 * Used by the settings application and brightness control widgets to 2945 * temporarily override the current screen brightness setting so that the 2946 * user can observe the effect of an intended settings change without applying 2947 * it immediately. 2948 * 2949 * The override will be canceled when the setting value is next updated. 2950 * 2951 * @param brightness The overridden brightness. 2952 * 2953 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2954 */ 2955 @Override // Binder call 2956 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2957 mContext.enforceCallingOrSelfPermission( 2958 android.Manifest.permission.DEVICE_POWER, null); 2959 2960 final long ident = Binder.clearCallingIdentity(); 2961 try { 2962 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2963 } finally { 2964 Binder.restoreCallingIdentity(ident); 2965 } 2966 } 2967 2968 /** 2969 * Used by the settings application and brightness control widgets to 2970 * temporarily override the current screen auto-brightness adjustment setting so that the 2971 * user can observe the effect of an intended settings change without applying 2972 * it immediately. 2973 * 2974 * The override will be canceled when the setting value is next updated. 2975 * 2976 * @param adj The overridden brightness, or Float.NaN to disable the override. 2977 * 2978 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2979 */ 2980 @Override // Binder call 2981 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2982 mContext.enforceCallingOrSelfPermission( 2983 android.Manifest.permission.DEVICE_POWER, null); 2984 2985 final long ident = Binder.clearCallingIdentity(); 2986 try { 2987 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2988 } finally { 2989 Binder.restoreCallingIdentity(ident); 2990 } 2991 } 2992 2993 /** 2994 * Used by the phone application to make the attention LED flash when ringing. 2995 */ 2996 @Override // Binder call 2997 public void setAttentionLight(boolean on, int color) { 2998 mContext.enforceCallingOrSelfPermission( 2999 android.Manifest.permission.DEVICE_POWER, null); 3000 3001 final long ident = Binder.clearCallingIdentity(); 3002 try { 3003 setAttentionLightInternal(on, color); 3004 } finally { 3005 Binder.restoreCallingIdentity(ident); 3006 } 3007 } 3008 3009 @Override // Binder call 3010 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3011 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 3012 != PackageManager.PERMISSION_GRANTED) { 3013 pw.println("Permission Denial: can't dump PowerManager from from pid=" 3014 + Binder.getCallingPid() 3015 + ", uid=" + Binder.getCallingUid()); 3016 return; 3017 } 3018 3019 final long ident = Binder.clearCallingIdentity(); 3020 try { 3021 dumpInternal(pw); 3022 } finally { 3023 Binder.restoreCallingIdentity(ident); 3024 } 3025 } 3026 } 3027 3028 private final class LocalService extends PowerManagerInternal { 3029 /** 3030 * Used by the window manager to override the screen brightness based on the 3031 * current foreground activity. 3032 * 3033 * This method must only be called by the window manager. 3034 * 3035 * @param brightness The overridden brightness, or -1 to disable the override. 3036 */ 3037 @Override 3038 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 3039 mContext.enforceCallingOrSelfPermission( 3040 android.Manifest.permission.DEVICE_POWER, null); 3041 3042 final long ident = Binder.clearCallingIdentity(); 3043 try { 3044 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 3045 } finally { 3046 Binder.restoreCallingIdentity(ident); 3047 } 3048 } 3049 3050 /** 3051 * Used by the window manager to override the button brightness based on the 3052 * current foreground activity. 3053 * 3054 * This method must only be called by the window manager. 3055 * 3056 * @param brightness The overridden brightness, or -1 to disable the override. 3057 */ 3058 @Override 3059 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 3060 // Do nothing. 3061 // Button lights are not currently supported in the new implementation. 3062 mContext.enforceCallingOrSelfPermission( 3063 android.Manifest.permission.DEVICE_POWER, null); 3064 } 3065 3066 /** 3067 * Used by the window manager to override the user activity timeout based on the 3068 * current foreground activity. It can only be used to make the timeout shorter 3069 * than usual, not longer. 3070 * 3071 * This method must only be called by the window manager. 3072 * 3073 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 3074 */ 3075 @Override 3076 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 3077 mContext.enforceCallingOrSelfPermission( 3078 android.Manifest.permission.DEVICE_POWER, null); 3079 3080 final long ident = Binder.clearCallingIdentity(); 3081 try { 3082 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 3083 } finally { 3084 Binder.restoreCallingIdentity(ident); 3085 } 3086 } 3087 3088 @Override 3089 public boolean getLowPowerModeEnabled() { 3090 synchronized (mLock) { 3091 return mLowPowerModeEnabled; 3092 } 3093 } 3094 3095 @Override 3096 public void registerLowPowerModeObserver(LowPowerModeListener listener) { 3097 synchronized (mLock) { 3098 mLowPowerModeListeners.add(listener); 3099 } 3100 } 3101 } 3102} 3103