PowerManagerService.java revision 3edf5272fb2185403dfe64b9722b9fc9b9de80f8
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.Trace; 60import android.os.UserHandle; 61import android.os.WorkSource; 62import android.provider.Settings; 63import android.service.dreams.DreamManagerInternal; 64import android.util.EventLog; 65import android.util.Log; 66import android.util.Slog; 67import android.util.TimeUtils; 68import android.view.Display; 69import android.view.WindowManagerPolicy; 70 71import java.io.FileDescriptor; 72import java.io.PrintWriter; 73import java.util.ArrayList; 74 75import libcore.util.Objects; 76 77/** 78 * The power manager service is responsible for coordinating power management 79 * functions on the device. 80 */ 81public final class PowerManagerService extends com.android.server.SystemService 82 implements Watchdog.Monitor { 83 private static final String TAG = "PowerManagerService"; 84 85 private static final boolean DEBUG = false; 86 private static final boolean DEBUG_SPEW = DEBUG && true; 87 88 // Message: Sent when a user activity timeout occurs to update the power state. 89 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 90 // Message: Sent when the device enters or exits a dreaming or dozing state. 91 private static final int MSG_SANDMAN = 2; 92 // Message: Sent when the screen on blocker is released. 93 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 94 // Message: Sent to poll whether the boot animation has terminated. 95 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 96 97 // Dirty bit: mWakeLocks changed 98 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 99 // Dirty bit: mWakefulness changed 100 private static final int DIRTY_WAKEFULNESS = 1 << 1; 101 // Dirty bit: user activity was poked or may have timed out 102 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 103 // Dirty bit: actual display power state was updated asynchronously 104 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 105 // Dirty bit: mBootCompleted changed 106 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 107 // Dirty bit: settings changed 108 private static final int DIRTY_SETTINGS = 1 << 5; 109 // Dirty bit: mIsPowered changed 110 private static final int DIRTY_IS_POWERED = 1 << 6; 111 // Dirty bit: mStayOn changed 112 private static final int DIRTY_STAY_ON = 1 << 7; 113 // Dirty bit: battery state changed 114 private static final int DIRTY_BATTERY_STATE = 1 << 8; 115 // Dirty bit: proximity state changed 116 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 117 // Dirty bit: screen on blocker state became held or unheld 118 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 119 // Dirty bit: dock state changed 120 private static final int DIRTY_DOCK_STATE = 1 << 11; 121 122 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 123 // The screen should be off or in the process of being turned off by the display controller. 124 // The device typically passes through the dozing state first. 125 private static final int WAKEFULNESS_ASLEEP = 0; 126 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 127 // When the user activity timeout expires, the device may start dreaming or go to sleep. 128 private static final int WAKEFULNESS_AWAKE = 1; 129 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 130 // which ends the dream. The device goes to sleep when goToSleep() is called, when 131 // the dream ends or when unplugged. 132 // User activity may brighten the screen but does not end the dream. 133 private static final int WAKEFULNESS_DREAMING = 2; 134 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 135 // low-power "doze" dream to run which keeps the display on but lets the application 136 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 137 // The device fully goes to sleep if the dream cannot be started or ends on its own. 138 private static final int WAKEFULNESS_DOZING = 3; 139 140 // Summarizes the state of all active wakelocks. 141 private static final int WAKE_LOCK_CPU = 1 << 0; 142 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 143 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 144 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 145 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 146 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 147 private static final int WAKE_LOCK_DOZE = 1 << 6; 148 149 // Summarizes the user activity state. 150 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 151 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 152 153 // Default timeout in milliseconds. This is only used until the settings 154 // provider populates the actual default value (R.integer.def_screen_off_timeout). 155 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 156 157 // The name of the boot animation service in init.rc. 158 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 159 160 // Poll interval in milliseconds for watching boot animation finished. 161 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 162 163 // Used to send the hint to the PowerHAL indicating transitions 164 // from and to the low power mode. 165 private static final int POWER_HINT_LOW_POWER_MODE = 5; 166 167 private final Context mContext; 168 private final ServiceThread mHandlerThread; 169 private final PowerManagerHandler mHandler; 170 171 private LightsManager mLightsManager; 172 private BatteryManagerInternal mBatteryManagerInternal; 173 private DisplayManagerInternal mDisplayManagerInternal; 174 private IBatteryStats mBatteryStats; 175 private IAppOpsService mAppOps; 176 private WindowManagerPolicy mPolicy; 177 private Notifier mNotifier; 178 private WirelessChargerDetector mWirelessChargerDetector; 179 private SettingsObserver mSettingsObserver; 180 private DreamManagerInternal mDreamManager; 181 private Light mAttentionLight; 182 183 private final Object mLock = new Object(); 184 185 // A bitfield that indicates what parts of the power state have 186 // changed and need to be recalculated. 187 private int mDirty; 188 189 // Indicates whether the device is awake or asleep or somewhere in between. 190 // This is distinct from the screen power state, which is managed separately. 191 private int mWakefulness; 192 193 // True if the sandman has just been summoned for the first time since entering the 194 // dreaming or dozing state. Indicates whether a new dream should begin. 195 private boolean mSandmanSummoned; 196 197 // True if MSG_SANDMAN has been scheduled. 198 private boolean mSandmanScheduled; 199 200 // Table of all suspend blockers. 201 // There should only be a few of these. 202 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 203 204 // Table of all wake locks acquired by applications. 205 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 206 207 // A bitfield that summarizes the state of all active wakelocks. 208 private int mWakeLockSummary; 209 210 // True if the device is in an interactive state. 211 private boolean mInteractive; 212 private boolean mInteractiveChanging; 213 214 // If true, instructs the display controller to wait for the proximity sensor to 215 // go negative before turning the screen on. 216 private boolean mRequestWaitForNegativeProximity; 217 218 // Timestamp of the last time the device was awoken or put to sleep. 219 private long mLastWakeTime; 220 private long mLastSleepTime; 221 222 // Timestamp of the last call to user activity. 223 private long mLastUserActivityTime; 224 private long mLastUserActivityTimeNoChangeLights; 225 226 // A bitfield that summarizes the effect of the user activity timer. 227 // A zero value indicates that the user activity timer has expired. 228 private int mUserActivitySummary; 229 230 // The desired display power state. The actual state may lag behind the 231 // requested because it is updated asynchronously by the display power controller. 232 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 233 234 // True if the display power state has been fully applied, which means the display 235 // is actually on or actually off or whatever was requested. 236 private boolean mDisplayReady; 237 238 // The suspend blocker used to keep the CPU alive when an application has acquired 239 // a wake lock. 240 private final SuspendBlocker mWakeLockSuspendBlocker; 241 242 // True if the wake lock suspend blocker has been acquired. 243 private boolean mHoldingWakeLockSuspendBlocker; 244 245 // The suspend blocker used to keep the CPU alive when the display is on, the 246 // display is getting ready or there is user activity (in which case the display 247 // must be on). 248 private final SuspendBlocker mDisplaySuspendBlocker; 249 250 // True if the display suspend blocker has been acquired. 251 private boolean mHoldingDisplaySuspendBlocker; 252 253 // The screen on blocker used to keep the screen from turning on while the lock 254 // screen is coming up. 255 private final ScreenOnBlockerImpl mScreenOnBlocker; 256 257 // True if systemReady() has been called. 258 private boolean mSystemReady; 259 260 // True if boot completed occurred. We keep the screen on until this happens. 261 private boolean mBootCompleted; 262 263 // True if auto-suspend mode is enabled. 264 // Refer to autosuspend.h. 265 private boolean mHalAutoSuspendModeEnabled; 266 267 // True if interactive mode is enabled. 268 // Refer to power.h. 269 private boolean mHalInteractiveModeEnabled; 270 271 // True if the device is plugged into a power source. 272 private boolean mIsPowered; 273 274 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 275 private int mPlugType; 276 277 // The current battery level percentage. 278 private int mBatteryLevel; 279 280 // The battery level percentage at the time the dream started. 281 // This is used to terminate a dream and go to sleep if the battery is 282 // draining faster than it is charging and the user activity timeout has expired. 283 private int mBatteryLevelWhenDreamStarted; 284 285 // The current dock state. 286 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 287 288 // True to decouple auto-suspend mode from the display state. 289 private boolean mDecoupleHalAutoSuspendModeFromDisplayConfig; 290 291 // True to decouple interactive mode from the display state. 292 private boolean mDecoupleHalInteractiveModeFromDisplayConfig; 293 294 // True if the device should wake up when plugged or unplugged. 295 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 296 297 // True if the device should suspend when the screen is off due to proximity. 298 private boolean mSuspendWhenScreenOffDueToProximityConfig; 299 300 // True if dreams are supported on this device. 301 private boolean mDreamsSupportedConfig; 302 303 // Default value for dreams enabled 304 private boolean mDreamsEnabledByDefaultConfig; 305 306 // Default value for dreams activate-on-sleep 307 private boolean mDreamsActivatedOnSleepByDefaultConfig; 308 309 // Default value for dreams activate-on-dock 310 private boolean mDreamsActivatedOnDockByDefaultConfig; 311 312 // True if dreams can run while not plugged in. 313 private boolean mDreamsEnabledOnBatteryConfig; 314 315 // Minimum battery level to allow dreaming when powered. 316 // Use -1 to disable this safety feature. 317 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 318 319 // Minimum battery level to allow dreaming when not powered. 320 // Use -1 to disable this safety feature. 321 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 322 323 // If the battery level drops by this percentage and the user activity timeout 324 // has expired, then assume the device is receiving insufficient current to charge 325 // effectively and terminate the dream. Use -1 to disable this safety feature. 326 private int mDreamsBatteryLevelDrainCutoffConfig; 327 328 // True if dreams are enabled by the user. 329 private boolean mDreamsEnabledSetting; 330 331 // True if dreams should be activated on sleep. 332 private boolean mDreamsActivateOnSleepSetting; 333 334 // True if dreams should be activated on dock. 335 private boolean mDreamsActivateOnDockSetting; 336 337 // The minimum screen off timeout, in milliseconds. 338 private int mMinimumScreenOffTimeoutConfig; 339 340 // The screen dim duration, in milliseconds. 341 // This is subtracted from the end of the screen off timeout so the 342 // minimum screen off timeout should be longer than this. 343 private int mMaximumScreenDimDurationConfig; 344 345 // The maximum screen dim time expressed as a ratio relative to the screen 346 // off timeout. If the screen off timeout is very short then we want the 347 // dim timeout to also be quite short so that most of the time is spent on. 348 // Otherwise the user won't get much screen on time before dimming occurs. 349 private float mMaximumScreenDimRatioConfig; 350 351 // The screen off timeout setting value in milliseconds. 352 private int mScreenOffTimeoutSetting; 353 354 // The maximum allowable screen off timeout according to the device 355 // administration policy. Overrides other settings. 356 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 357 358 // The stay on while plugged in setting. 359 // A bitfield of battery conditions under which to make the screen stay on. 360 private int mStayOnWhilePluggedInSetting; 361 362 // True if the device should stay on. 363 private boolean mStayOn; 364 365 // True if the proximity sensor reads a positive result. 366 private boolean mProximityPositive; 367 368 // Screen brightness setting limits. 369 private int mScreenBrightnessSettingMinimum; 370 private int mScreenBrightnessSettingMaximum; 371 private int mScreenBrightnessSettingDefault; 372 373 // The screen brightness setting, from 0 to 255. 374 // Use -1 if no value has been set. 375 private int mScreenBrightnessSetting; 376 377 // The screen auto-brightness adjustment setting, from -1 to 1. 378 // Use 0 if there is no adjustment. 379 private float mScreenAutoBrightnessAdjustmentSetting; 380 381 // The screen brightness mode. 382 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 383 private int mScreenBrightnessModeSetting; 384 385 // The screen brightness setting override from the window manager 386 // to allow the current foreground activity to override the brightness. 387 // Use -1 to disable. 388 private int mScreenBrightnessOverrideFromWindowManager = -1; 389 390 // The user activity timeout override from the window manager 391 // to allow the current foreground activity to override the user activity timeout. 392 // Use -1 to disable. 393 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 394 395 // The screen brightness setting override from the settings application 396 // to temporarily adjust the brightness until next updated, 397 // Use -1 to disable. 398 private int mTemporaryScreenBrightnessSettingOverride = -1; 399 400 // The screen brightness adjustment setting override from the settings 401 // application to temporarily adjust the auto-brightness adjustment factor 402 // until next updated, in the range -1..1. 403 // Use NaN to disable. 404 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 405 406 // The screen state to use while dozing. 407 private int mDozeScreenStateOverrideFromDreamManager = Display.STATE_UNKNOWN; 408 409 // The screen brightness to use while dozing. 410 private int mDozeScreenBrightnessOverrideFromDreamManager = PowerManager.BRIGHTNESS_DEFAULT; 411 412 // Time when we last logged a warning about calling userActivity() without permission. 413 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 414 415 // If true, the device is in low power mode. 416 private boolean mLowPowerModeEnabled; 417 418 // Current state of the low power mode setting. 419 private boolean mLowPowerModeSetting; 420 421 // Current state of whether the settings are allowing auto low power mode. 422 private boolean mAutoLowPowerModeEnabled; 423 424 // The user turned off low power mode below the trigger level 425 private boolean mAutoLowPowerModeSnoozing; 426 427 // True if the battery level is currently considered low. 428 private boolean mBatteryLevelLow; 429 430 private final ArrayList<PowerManagerInternal.LowPowerModeListener> mLowPowerModeListeners 431 = new ArrayList<PowerManagerInternal.LowPowerModeListener>(); 432 433 private native void nativeInit(); 434 435 private static native void nativeAcquireSuspendBlocker(String name); 436 private static native void nativeReleaseSuspendBlocker(String name); 437 private static native void nativeSetInteractive(boolean enable); 438 private static native void nativeSetAutoSuspend(boolean enable); 439 private static native void nativeSendPowerHint(int hintId, int data); 440 441 public PowerManagerService(Context context) { 442 super(context); 443 mContext = context; 444 mHandlerThread = new ServiceThread(TAG, 445 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 446 mHandlerThread.start(); 447 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 448 449 synchronized (mLock) { 450 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 451 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 452 mDisplaySuspendBlocker.acquire(); 453 mHoldingDisplaySuspendBlocker = true; 454 mHalAutoSuspendModeEnabled = false; 455 mHalInteractiveModeEnabled = true; 456 457 mScreenOnBlocker = new ScreenOnBlockerImpl(); 458 mWakefulness = WAKEFULNESS_AWAKE; 459 mInteractive = true; 460 461 nativeInit(); 462 nativeSetAutoSuspend(false); 463 nativeSetInteractive(true); 464 } 465 } 466 467 @Override 468 public void onStart() { 469 publishBinderService(Context.POWER_SERVICE, new BinderService()); 470 publishLocalService(PowerManagerInternal.class, new LocalService()); 471 472 Watchdog.getInstance().addMonitor(this); 473 Watchdog.getInstance().addThread(mHandler); 474 } 475 476 @Override 477 public void onBootPhase(int phase) { 478 if (phase == PHASE_BOOT_COMPLETED) { 479 // This is our early signal that the system thinks it has finished booting. 480 // However, the boot animation may still be running for a few more seconds 481 // since it is ultimately in charge of when it terminates. 482 // Defer transitioning into the boot completed state until the animation exits. 483 // We do this so that the screen does not start to dim prematurely before 484 // the user has actually had a chance to interact with the device. 485 startWatchingForBootAnimationFinished(); 486 } 487 } 488 489 public void systemReady(IAppOpsService appOps) { 490 synchronized (mLock) { 491 mSystemReady = true; 492 mAppOps = appOps; 493 mDreamManager = getLocalService(DreamManagerInternal.class); 494 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 495 mPolicy = getLocalService(WindowManagerPolicy.class); 496 mBatteryManagerInternal = getLocalService(BatteryManagerInternal.class); 497 498 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 499 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 500 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 501 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 502 503 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 504 505 // The notifier runs on the system server's main looper so as not to interfere 506 // with the animations and other critical functions of the power manager. 507 mBatteryStats = BatteryStatsService.getService(); 508 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 509 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 510 mScreenOnBlocker, mPolicy); 511 512 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 513 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 514 mHandler); 515 mSettingsObserver = new SettingsObserver(mHandler); 516 517 mLightsManager = getLocalService(LightsManager.class); 518 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 519 520 // Initialize display power management. 521 mDisplayManagerInternal.initPowerManagement( 522 mDisplayPowerCallbacks, mHandler, sensorManager); 523 524 // Register for broadcasts from other components of the system. 525 IntentFilter filter = new IntentFilter(); 526 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 527 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 528 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 529 530 filter = new IntentFilter(); 531 filter.addAction(Intent.ACTION_DREAMING_STARTED); 532 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 533 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 534 535 filter = new IntentFilter(); 536 filter.addAction(Intent.ACTION_USER_SWITCHED); 537 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 538 539 filter = new IntentFilter(); 540 filter.addAction(Intent.ACTION_DOCK_EVENT); 541 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 542 543 // Register for settings changes. 544 final ContentResolver resolver = mContext.getContentResolver(); 545 resolver.registerContentObserver(Settings.Secure.getUriFor( 546 Settings.Secure.SCREENSAVER_ENABLED), 547 false, mSettingsObserver, UserHandle.USER_ALL); 548 resolver.registerContentObserver(Settings.Secure.getUriFor( 549 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 550 false, mSettingsObserver, UserHandle.USER_ALL); 551 resolver.registerContentObserver(Settings.Secure.getUriFor( 552 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 553 false, mSettingsObserver, UserHandle.USER_ALL); 554 resolver.registerContentObserver(Settings.System.getUriFor( 555 Settings.System.SCREEN_OFF_TIMEOUT), 556 false, mSettingsObserver, UserHandle.USER_ALL); 557 resolver.registerContentObserver(Settings.Global.getUriFor( 558 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 559 false, mSettingsObserver, UserHandle.USER_ALL); 560 resolver.registerContentObserver(Settings.System.getUriFor( 561 Settings.System.SCREEN_BRIGHTNESS), 562 false, mSettingsObserver, UserHandle.USER_ALL); 563 resolver.registerContentObserver(Settings.System.getUriFor( 564 Settings.System.SCREEN_BRIGHTNESS_MODE), 565 false, mSettingsObserver, UserHandle.USER_ALL); 566 resolver.registerContentObserver(Settings.System.getUriFor( 567 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ), 568 false, mSettingsObserver, UserHandle.USER_ALL); 569 resolver.registerContentObserver(Settings.Global.getUriFor( 570 Settings.Global.LOW_POWER_MODE), 571 false, mSettingsObserver, UserHandle.USER_ALL); 572 resolver.registerContentObserver(Settings.Global.getUriFor( 573 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL), 574 false, mSettingsObserver, UserHandle.USER_ALL); 575 // Go. 576 readConfigurationLocked(); 577 updateSettingsLocked(); 578 mDirty |= DIRTY_BATTERY_STATE; 579 updatePowerStateLocked(); 580 } 581 } 582 583 private void readConfigurationLocked() { 584 final Resources resources = mContext.getResources(); 585 586 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 587 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 588 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 589 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 590 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 591 com.android.internal.R.bool.config_unplugTurnsOnScreen); 592 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 593 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 594 mDreamsSupportedConfig = resources.getBoolean( 595 com.android.internal.R.bool.config_dreamsSupported); 596 mDreamsEnabledByDefaultConfig = resources.getBoolean( 597 com.android.internal.R.bool.config_dreamsEnabledByDefault); 598 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 599 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 600 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 601 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 602 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 603 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 604 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 605 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 606 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 607 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 608 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 609 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 610 mMinimumScreenOffTimeoutConfig = resources.getInteger( 611 com.android.internal.R.integer.config_minimumScreenOffTimeout); 612 mMaximumScreenDimDurationConfig = resources.getInteger( 613 com.android.internal.R.integer.config_maximumScreenDimDuration); 614 mMaximumScreenDimRatioConfig = resources.getFraction( 615 com.android.internal.R.fraction.config_maximumScreenDimRatio, 1, 1); 616 } 617 618 private void updateSettingsLocked() { 619 final ContentResolver resolver = mContext.getContentResolver(); 620 621 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 622 Settings.Secure.SCREENSAVER_ENABLED, 623 mDreamsEnabledByDefaultConfig ? 1 : 0, 624 UserHandle.USER_CURRENT) != 0); 625 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 626 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 627 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 628 UserHandle.USER_CURRENT) != 0); 629 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 630 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 631 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 632 UserHandle.USER_CURRENT) != 0); 633 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 634 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 635 UserHandle.USER_CURRENT); 636 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 637 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 638 639 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 640 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 641 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 642 UserHandle.USER_CURRENT); 643 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 644 mTemporaryScreenBrightnessSettingOverride = -1; 645 } 646 647 final float oldScreenAutoBrightnessAdjustmentSetting = 648 mScreenAutoBrightnessAdjustmentSetting; 649 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 650 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 651 UserHandle.USER_CURRENT); 652 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 653 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 654 } 655 656 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 657 Settings.System.SCREEN_BRIGHTNESS_MODE, 658 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 659 660 final boolean lowPowerModeEnabled = Settings.Global.getInt(resolver, 661 Settings.Global.LOW_POWER_MODE, 0) != 0; 662 final boolean autoLowPowerModeEnabled = Settings.Global.getInt(resolver, 663 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL, 0) != 0; 664 if (lowPowerModeEnabled != mLowPowerModeSetting 665 || autoLowPowerModeEnabled != mAutoLowPowerModeEnabled) { 666 if (lowPowerModeEnabled != mLowPowerModeSetting) { 667 if (!mAutoLowPowerModeSnoozing && !lowPowerModeEnabled && !mIsPowered 668 && mAutoLowPowerModeEnabled) { 669 if (DEBUG_SPEW) { 670 Slog.d(TAG, "updateSettingsLocked: snoozing low power mode"); 671 } 672 mAutoLowPowerModeSnoozing = true; 673 } else if (mAutoLowPowerModeSnoozing && lowPowerModeEnabled) { 674 if (DEBUG_SPEW) { 675 Slog.d(TAG, "updateSettingsLocked: no longer snoozing low power mode"); 676 } 677 mAutoLowPowerModeSnoozing = true; 678 } 679 } 680 mLowPowerModeSetting = lowPowerModeEnabled; 681 mAutoLowPowerModeEnabled = autoLowPowerModeEnabled; 682 updateLowPowerModeLocked(); 683 } 684 685 mDirty |= DIRTY_SETTINGS; 686 } 687 688 void updateLowPowerModeLocked() { 689 if (mIsPowered && mLowPowerModeSetting) { 690 if (DEBUG_SPEW) { 691 Slog.d(TAG, "updateLowPowerModeLocked: powered, turning setting off"); 692 } 693 // Turn setting off if powered 694 Settings.Global.putInt(mContext.getContentResolver(), 695 Settings.Global.LOW_POWER_MODE, 0); 696 mLowPowerModeSetting = false; 697 } else if (!mIsPowered && mAutoLowPowerModeEnabled && !mAutoLowPowerModeSnoozing 698 && mBatteryLevelLow && !mLowPowerModeSetting) { 699 if (DEBUG_SPEW) { 700 Slog.d(TAG, "updateLowPowerModeLocked: trigger level reached, turning setting on"); 701 } 702 // Turn setting on if trigger level is enabled, and we're now below it 703 Settings.Global.putInt(mContext.getContentResolver(), 704 Settings.Global.LOW_POWER_MODE, 1); 705 mLowPowerModeSetting = true; 706 } 707 final boolean lowPowerModeEnabled = mLowPowerModeSetting; 708 if (mLowPowerModeEnabled != lowPowerModeEnabled) { 709 mLowPowerModeEnabled = lowPowerModeEnabled; 710 powerHintInternal(POWER_HINT_LOW_POWER_MODE, lowPowerModeEnabled ? 1 : 0); 711 mLowPowerModeEnabled = lowPowerModeEnabled; 712 BackgroundThread.getHandler().post(new Runnable() { 713 @Override 714 public void run() { 715 Intent intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGING) 716 .putExtra(PowerManager.EXTRA_POWER_SAVE_MODE, mLowPowerModeEnabled) 717 .addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 718 mContext.sendBroadcast(intent); 719 ArrayList<PowerManagerInternal.LowPowerModeListener> listeners; 720 synchronized (mLock) { 721 listeners = new ArrayList<PowerManagerInternal.LowPowerModeListener>( 722 mLowPowerModeListeners); 723 } 724 for (int i=0; i<listeners.size(); i++) { 725 listeners.get(i).onLowPowerModeChanged(lowPowerModeEnabled); 726 } 727 intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED); 728 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 729 mContext.sendBroadcast(intent); 730 } 731 }); 732 } 733 } 734 735 private void handleSettingsChangedLocked() { 736 updateSettingsLocked(); 737 updatePowerStateLocked(); 738 } 739 740 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 741 WorkSource ws, String historyTag, int uid, int pid) { 742 synchronized (mLock) { 743 if (DEBUG_SPEW) { 744 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 745 + ", flags=0x" + Integer.toHexString(flags) 746 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 747 } 748 749 WakeLock wakeLock; 750 int index = findWakeLockIndexLocked(lock); 751 boolean notifyAcquire; 752 if (index >= 0) { 753 wakeLock = mWakeLocks.get(index); 754 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 755 // Update existing wake lock. This shouldn't happen but is harmless. 756 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 757 uid, pid, ws, historyTag); 758 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 759 } 760 notifyAcquire = false; 761 } else { 762 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 763 try { 764 lock.linkToDeath(wakeLock, 0); 765 } catch (RemoteException ex) { 766 throw new IllegalArgumentException("Wake lock is already dead."); 767 } 768 mWakeLocks.add(wakeLock); 769 notifyAcquire = true; 770 } 771 772 applyWakeLockFlagsOnAcquireLocked(wakeLock, uid); 773 mDirty |= DIRTY_WAKE_LOCKS; 774 updatePowerStateLocked(); 775 if (notifyAcquire) { 776 // This needs to be done last so we are sure we have acquired the 777 // kernel wake lock. Otherwise we have a race where the system may 778 // go to sleep between the time we start the accounting in battery 779 // stats and when we actually get around to telling the kernel to 780 // stay awake. 781 notifyWakeLockAcquiredLocked(wakeLock); 782 } 783 } 784 } 785 786 @SuppressWarnings("deprecation") 787 private static boolean isScreenLock(final WakeLock wakeLock) { 788 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 789 case PowerManager.FULL_WAKE_LOCK: 790 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 791 case PowerManager.SCREEN_DIM_WAKE_LOCK: 792 return true; 793 } 794 return false; 795 } 796 797 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock, int uid) { 798 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 799 && isScreenLock(wakeLock)) { 800 wakeUpNoUpdateLocked(SystemClock.uptimeMillis(), uid); 801 } 802 } 803 804 private void releaseWakeLockInternal(IBinder lock, int flags) { 805 synchronized (mLock) { 806 int index = findWakeLockIndexLocked(lock); 807 if (index < 0) { 808 if (DEBUG_SPEW) { 809 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 810 + " [not found], flags=0x" + Integer.toHexString(flags)); 811 } 812 return; 813 } 814 815 WakeLock wakeLock = mWakeLocks.get(index); 816 if (DEBUG_SPEW) { 817 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 818 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 819 } 820 821 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 822 mRequestWaitForNegativeProximity = true; 823 } 824 825 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 826 removeWakeLockLocked(wakeLock, index); 827 } 828 } 829 830 private void handleWakeLockDeath(WakeLock wakeLock) { 831 synchronized (mLock) { 832 if (DEBUG_SPEW) { 833 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 834 + " [" + wakeLock.mTag + "]"); 835 } 836 837 int index = mWakeLocks.indexOf(wakeLock); 838 if (index < 0) { 839 return; 840 } 841 842 removeWakeLockLocked(wakeLock, index); 843 } 844 } 845 846 private void removeWakeLockLocked(WakeLock wakeLock, int index) { 847 mWakeLocks.remove(index); 848 notifyWakeLockReleasedLocked(wakeLock); 849 850 applyWakeLockFlagsOnReleaseLocked(wakeLock); 851 mDirty |= DIRTY_WAKE_LOCKS; 852 updatePowerStateLocked(); 853 } 854 855 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 856 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 857 && isScreenLock(wakeLock)) { 858 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 859 PowerManager.USER_ACTIVITY_EVENT_OTHER, 860 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 861 wakeLock.mOwnerUid); 862 } 863 } 864 865 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag) { 866 synchronized (mLock) { 867 int index = findWakeLockIndexLocked(lock); 868 if (index < 0) { 869 if (DEBUG_SPEW) { 870 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 871 + " [not found], ws=" + ws); 872 } 873 throw new IllegalArgumentException("Wake lock not active"); 874 } 875 876 WakeLock wakeLock = mWakeLocks.get(index); 877 if (DEBUG_SPEW) { 878 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 879 + " [" + wakeLock.mTag + "], ws=" + ws); 880 } 881 882 if (!wakeLock.hasSameWorkSource(ws)) { 883 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 884 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 885 ws, historyTag); 886 wakeLock.mHistoryTag = historyTag; 887 wakeLock.updateWorkSource(ws); 888 } 889 } 890 } 891 892 private int findWakeLockIndexLocked(IBinder lock) { 893 final int count = mWakeLocks.size(); 894 for (int i = 0; i < count; i++) { 895 if (mWakeLocks.get(i).mLock == lock) { 896 return i; 897 } 898 } 899 return -1; 900 } 901 902 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 903 if (mSystemReady) { 904 wakeLock.mNotifiedAcquired = true; 905 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 906 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 907 wakeLock.mHistoryTag); 908 } 909 } 910 911 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 912 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 913 if (mSystemReady && wakeLock.mNotifiedAcquired) { 914 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 915 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 916 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 917 } 918 } 919 920 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 921 if (mSystemReady && wakeLock.mNotifiedAcquired) { 922 wakeLock.mNotifiedAcquired = false; 923 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, 924 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 925 wakeLock.mWorkSource, wakeLock.mHistoryTag); 926 } 927 } 928 929 @SuppressWarnings("deprecation") 930 private boolean isWakeLockLevelSupportedInternal(int level) { 931 synchronized (mLock) { 932 switch (level) { 933 case PowerManager.PARTIAL_WAKE_LOCK: 934 case PowerManager.SCREEN_DIM_WAKE_LOCK: 935 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 936 case PowerManager.FULL_WAKE_LOCK: 937 case PowerManager.DOZE_WAKE_LOCK: 938 return true; 939 940 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 941 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 942 943 default: 944 return false; 945 } 946 } 947 } 948 949 // Called from native code. 950 private void userActivityFromNative(long eventTime, int event, int flags) { 951 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 952 } 953 954 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 955 synchronized (mLock) { 956 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 957 updatePowerStateLocked(); 958 } 959 } 960 } 961 962 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 963 if (DEBUG_SPEW) { 964 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 965 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 966 + ", uid=" + uid); 967 } 968 969 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 970 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 971 || !mBootCompleted || !mSystemReady) { 972 return false; 973 } 974 975 Trace.traceBegin(Trace.TRACE_TAG_POWER, "userActivity"); 976 try { 977 mNotifier.onUserActivity(event, uid); 978 979 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 980 if (eventTime > mLastUserActivityTimeNoChangeLights 981 && eventTime > mLastUserActivityTime) { 982 mLastUserActivityTimeNoChangeLights = eventTime; 983 mDirty |= DIRTY_USER_ACTIVITY; 984 return true; 985 } 986 } else { 987 if (eventTime > mLastUserActivityTime) { 988 mLastUserActivityTime = eventTime; 989 mDirty |= DIRTY_USER_ACTIVITY; 990 return true; 991 } 992 } 993 } finally { 994 Trace.traceEnd(Trace.TRACE_TAG_POWER); 995 } 996 return false; 997 } 998 999 private void wakeUpInternal(long eventTime, int uid) { 1000 synchronized (mLock) { 1001 if (wakeUpNoUpdateLocked(eventTime, uid)) { 1002 updatePowerStateLocked(); 1003 } 1004 } 1005 } 1006 1007 private boolean wakeUpNoUpdateLocked(long eventTime, int uid) { 1008 if (DEBUG_SPEW) { 1009 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime + ", uid=" + uid); 1010 } 1011 1012 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 1013 || !mBootCompleted || !mSystemReady) { 1014 return false; 1015 } 1016 1017 Trace.traceBegin(Trace.TRACE_TAG_POWER, "wakeUp"); 1018 try { 1019 switch (mWakefulness) { 1020 case WAKEFULNESS_ASLEEP: 1021 Slog.i(TAG, "Waking up from sleep (uid " + uid +")..."); 1022 break; 1023 case WAKEFULNESS_DREAMING: 1024 Slog.i(TAG, "Waking up from dream (uid " + uid +")..."); 1025 break; 1026 case WAKEFULNESS_DOZING: 1027 Slog.i(TAG, "Waking up from dozing (uid " + uid +")..."); 1028 break; 1029 } 1030 1031 mLastWakeTime = eventTime; 1032 mDirty |= DIRTY_WAKEFULNESS; 1033 mWakefulness = WAKEFULNESS_AWAKE; 1034 setInteractiveStateLocked(true, 0); 1035 1036 userActivityNoUpdateLocked( 1037 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, uid); 1038 } finally { 1039 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1040 } 1041 return true; 1042 } 1043 1044 private void goToSleepInternal(long eventTime, int reason, int flags, int uid) { 1045 synchronized (mLock) { 1046 if (goToSleepNoUpdateLocked(eventTime, reason, flags, uid)) { 1047 updatePowerStateLocked(); 1048 } 1049 } 1050 } 1051 1052 // This method is called goToSleep for historical reasons but we actually start 1053 // dozing before really going to sleep. 1054 @SuppressWarnings("deprecation") 1055 private boolean goToSleepNoUpdateLocked(long eventTime, int reason, int flags, int uid) { 1056 if (DEBUG_SPEW) { 1057 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime 1058 + ", reason=" + reason + ", flags=" + flags + ", uid=" + uid); 1059 } 1060 1061 if (eventTime < mLastWakeTime 1062 || mWakefulness == WAKEFULNESS_ASLEEP 1063 || mWakefulness == WAKEFULNESS_DOZING 1064 || !mBootCompleted || !mSystemReady) { 1065 return false; 1066 } 1067 1068 Trace.traceBegin(Trace.TRACE_TAG_POWER, "goToSleep"); 1069 try { 1070 switch (reason) { 1071 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 1072 Slog.i(TAG, "Going to sleep due to device administration policy " 1073 + "(uid " + uid +")..."); 1074 break; 1075 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 1076 Slog.i(TAG, "Going to sleep due to screen timeout (uid " + uid +")..."); 1077 break; 1078 case PowerManager.GO_TO_SLEEP_REASON_LID_SWITCH: 1079 Slog.i(TAG, "Going to sleep due to lid switch (uid " + uid +")..."); 1080 break; 1081 case PowerManager.GO_TO_SLEEP_REASON_POWER_BUTTON: 1082 Slog.i(TAG, "Going to sleep due to power button (uid " + uid +")..."); 1083 break; 1084 case PowerManager.GO_TO_SLEEP_REASON_HDMI: 1085 Slog.i(TAG, "Going to sleep due to HDMI standby (uid " + uid +")..."); 1086 break; 1087 default: 1088 Slog.i(TAG, "Going to sleep by application request (uid " + uid +")..."); 1089 reason = PowerManager.GO_TO_SLEEP_REASON_APPLICATION; 1090 break; 1091 } 1092 1093 mLastSleepTime = eventTime; 1094 mDirty |= DIRTY_WAKEFULNESS; 1095 mWakefulness = WAKEFULNESS_DOZING; 1096 mSandmanSummoned = true; 1097 setInteractiveStateLocked(false, reason); 1098 1099 // Report the number of wake locks that will be cleared by going to sleep. 1100 int numWakeLocksCleared = 0; 1101 final int numWakeLocks = mWakeLocks.size(); 1102 for (int i = 0; i < numWakeLocks; i++) { 1103 final WakeLock wakeLock = mWakeLocks.get(i); 1104 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1105 case PowerManager.FULL_WAKE_LOCK: 1106 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1107 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1108 numWakeLocksCleared += 1; 1109 break; 1110 } 1111 } 1112 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 1113 1114 // Skip dozing if requested. 1115 if ((flags & PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE) != 0) { 1116 reallyGoToSleepNoUpdateLocked(eventTime, uid); 1117 } 1118 } finally { 1119 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1120 } 1121 return true; 1122 } 1123 1124 private void napInternal(long eventTime, int uid) { 1125 synchronized (mLock) { 1126 if (napNoUpdateLocked(eventTime, uid)) { 1127 updatePowerStateLocked(); 1128 } 1129 } 1130 } 1131 1132 private boolean napNoUpdateLocked(long eventTime, int uid) { 1133 if (DEBUG_SPEW) { 1134 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime + ", uid=" + uid); 1135 } 1136 1137 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1138 || !mBootCompleted || !mSystemReady) { 1139 return false; 1140 } 1141 1142 Trace.traceBegin(Trace.TRACE_TAG_POWER, "nap"); 1143 try { 1144 Slog.i(TAG, "Nap time (uid " + uid +")..."); 1145 1146 mDirty |= DIRTY_WAKEFULNESS; 1147 mWakefulness = WAKEFULNESS_DREAMING; 1148 mSandmanSummoned = true; 1149 setInteractiveStateLocked(true, 0); 1150 } finally { 1151 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1152 } 1153 return true; 1154 } 1155 1156 // Done dozing, drop everything and go to sleep. 1157 private boolean reallyGoToSleepNoUpdateLocked(long eventTime, int uid) { 1158 if (DEBUG_SPEW) { 1159 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime 1160 + ", uid=" + uid); 1161 } 1162 1163 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1164 || !mBootCompleted || !mSystemReady) { 1165 return false; 1166 } 1167 1168 Trace.traceBegin(Trace.TRACE_TAG_POWER, "reallyGoToSleep"); 1169 try { 1170 Slog.i(TAG, "Sleeping (uid " + uid +")..."); 1171 1172 mDirty |= DIRTY_WAKEFULNESS; 1173 mWakefulness = WAKEFULNESS_ASLEEP; 1174 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1175 } finally { 1176 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1177 } 1178 return true; 1179 } 1180 1181 private void setInteractiveStateLocked(boolean interactive, int reason) { 1182 if (mInteractive != interactive) { 1183 finishInteractiveStateChangeLocked(); 1184 1185 mInteractive = interactive; 1186 mInteractiveChanging = true; 1187 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1188 } 1189 } 1190 1191 private void finishInteractiveStateChangeLocked() { 1192 if (mInteractiveChanging) { 1193 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1194 mInteractiveChanging = false; 1195 } 1196 } 1197 1198 /** 1199 * Updates the global power state based on dirty bits recorded in mDirty. 1200 * 1201 * This is the main function that performs power state transitions. 1202 * We centralize them here so that we can recompute the power state completely 1203 * each time something important changes, and ensure that we do it the same 1204 * way each time. The point is to gather all of the transition logic here. 1205 */ 1206 private void updatePowerStateLocked() { 1207 if (!mSystemReady || mDirty == 0) { 1208 return; 1209 } 1210 if (!Thread.holdsLock(mLock)) { 1211 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1212 } 1213 1214 Trace.traceBegin(Trace.TRACE_TAG_POWER, "updatePowerState"); 1215 try { 1216 // Phase 0: Basic state updates. 1217 updateIsPoweredLocked(mDirty); 1218 updateStayOnLocked(mDirty); 1219 1220 // Phase 1: Update wakefulness. 1221 // Loop because the wake lock and user activity computations are influenced 1222 // by changes in wakefulness. 1223 final long now = SystemClock.uptimeMillis(); 1224 int dirtyPhase2 = 0; 1225 for (;;) { 1226 int dirtyPhase1 = mDirty; 1227 dirtyPhase2 |= dirtyPhase1; 1228 mDirty = 0; 1229 1230 updateWakeLockSummaryLocked(dirtyPhase1); 1231 updateUserActivitySummaryLocked(now, dirtyPhase1); 1232 if (!updateWakefulnessLocked(dirtyPhase1)) { 1233 break; 1234 } 1235 } 1236 1237 // Phase 2: Update dreams and display power state. 1238 updateDreamLocked(dirtyPhase2); 1239 updateDisplayPowerStateLocked(dirtyPhase2); 1240 1241 // Phase 3: Send notifications, if needed. 1242 if (mDisplayReady) { 1243 finishInteractiveStateChangeLocked(); 1244 } 1245 1246 // Phase 4: Update suspend blocker. 1247 // Because we might release the last suspend blocker here, we need to make sure 1248 // we finished everything else first! 1249 updateSuspendBlockerLocked(); 1250 } finally { 1251 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1252 } 1253 } 1254 1255 /** 1256 * Updates the value of mIsPowered. 1257 * Sets DIRTY_IS_POWERED if a change occurred. 1258 */ 1259 private void updateIsPoweredLocked(int dirty) { 1260 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1261 final boolean wasPowered = mIsPowered; 1262 final int oldPlugType = mPlugType; 1263 final boolean oldLevelLow = mBatteryLevelLow; 1264 mIsPowered = mBatteryManagerInternal.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1265 mPlugType = mBatteryManagerInternal.getPlugType(); 1266 mBatteryLevel = mBatteryManagerInternal.getBatteryLevel(); 1267 mBatteryLevelLow = mBatteryManagerInternal.getBatteryLevelLow(); 1268 1269 if (DEBUG_SPEW) { 1270 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1271 + ", mIsPowered=" + mIsPowered 1272 + ", oldPlugType=" + oldPlugType 1273 + ", mPlugType=" + mPlugType 1274 + ", mBatteryLevel=" + mBatteryLevel); 1275 } 1276 1277 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1278 mDirty |= DIRTY_IS_POWERED; 1279 1280 // Update wireless dock detection state. 1281 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1282 mIsPowered, mPlugType, mBatteryLevel); 1283 1284 // Treat plugging and unplugging the devices as a user activity. 1285 // Users find it disconcerting when they plug or unplug the device 1286 // and it shuts off right away. 1287 // Some devices also wake the device when plugged or unplugged because 1288 // they don't have a charging LED. 1289 final long now = SystemClock.uptimeMillis(); 1290 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1291 dockedOnWirelessCharger)) { 1292 wakeUpNoUpdateLocked(now, Process.SYSTEM_UID); 1293 } 1294 userActivityNoUpdateLocked( 1295 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1296 1297 // Tell the notifier whether wireless charging has started so that 1298 // it can provide feedback to the user. 1299 if (dockedOnWirelessCharger) { 1300 mNotifier.onWirelessChargingStarted(); 1301 } 1302 } 1303 1304 if (wasPowered != mIsPowered || oldLevelLow != mBatteryLevelLow) { 1305 if (oldLevelLow != mBatteryLevelLow && !mBatteryLevelLow) { 1306 if (DEBUG_SPEW) { 1307 Slog.d(TAG, "updateIsPoweredLocked: resetting low power snooze"); 1308 } 1309 mAutoLowPowerModeSnoozing = false; 1310 } 1311 updateLowPowerModeLocked(); 1312 } 1313 } 1314 } 1315 1316 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1317 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1318 // Don't wake when powered unless configured to do so. 1319 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1320 return false; 1321 } 1322 1323 // Don't wake when undocked from wireless charger. 1324 // See WirelessChargerDetector for justification. 1325 if (wasPowered && !mIsPowered 1326 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1327 return false; 1328 } 1329 1330 // Don't wake when docked on wireless charger unless we are certain of it. 1331 // See WirelessChargerDetector for justification. 1332 if (!wasPowered && mIsPowered 1333 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1334 && !dockedOnWirelessCharger) { 1335 return false; 1336 } 1337 1338 // If already dreaming and becoming powered, then don't wake. 1339 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1340 return false; 1341 } 1342 1343 // Otherwise wake up! 1344 return true; 1345 } 1346 1347 /** 1348 * Updates the value of mStayOn. 1349 * Sets DIRTY_STAY_ON if a change occurred. 1350 */ 1351 private void updateStayOnLocked(int dirty) { 1352 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1353 final boolean wasStayOn = mStayOn; 1354 if (mStayOnWhilePluggedInSetting != 0 1355 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1356 mStayOn = mBatteryManagerInternal.isPowered(mStayOnWhilePluggedInSetting); 1357 } else { 1358 mStayOn = false; 1359 } 1360 1361 if (mStayOn != wasStayOn) { 1362 mDirty |= DIRTY_STAY_ON; 1363 } 1364 } 1365 } 1366 1367 /** 1368 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1369 * Note that most wake-locks are ignored when the system is asleep. 1370 * 1371 * This function must have no other side-effects. 1372 */ 1373 @SuppressWarnings("deprecation") 1374 private void updateWakeLockSummaryLocked(int dirty) { 1375 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1376 mWakeLockSummary = 0; 1377 1378 final int numWakeLocks = mWakeLocks.size(); 1379 for (int i = 0; i < numWakeLocks; i++) { 1380 final WakeLock wakeLock = mWakeLocks.get(i); 1381 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1382 case PowerManager.PARTIAL_WAKE_LOCK: 1383 mWakeLockSummary |= WAKE_LOCK_CPU; 1384 break; 1385 case PowerManager.FULL_WAKE_LOCK: 1386 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1387 break; 1388 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1389 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1390 break; 1391 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1392 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1393 break; 1394 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1395 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1396 break; 1397 case PowerManager.DOZE_WAKE_LOCK: 1398 mWakeLockSummary |= WAKE_LOCK_DOZE; 1399 break; 1400 } 1401 } 1402 1403 // Cancel wake locks that make no sense based on the current state. 1404 if (mWakefulness != WAKEFULNESS_DOZING) { 1405 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1406 } 1407 if (mWakefulness == WAKEFULNESS_ASLEEP 1408 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1409 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1410 | WAKE_LOCK_BUTTON_BRIGHT); 1411 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1412 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1413 } 1414 } 1415 1416 // Infer implied wake locks where necessary based on the current state. 1417 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1418 if (mWakefulness == WAKEFULNESS_AWAKE) { 1419 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1420 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1421 mWakeLockSummary |= WAKE_LOCK_CPU; 1422 } 1423 } 1424 1425 if (DEBUG_SPEW) { 1426 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1427 + wakefulnessToString(mWakefulness) 1428 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1429 } 1430 } 1431 } 1432 1433 /** 1434 * Updates the value of mUserActivitySummary to summarize the user requested 1435 * state of the system such as whether the screen should be bright or dim. 1436 * Note that user activity is ignored when the system is asleep. 1437 * 1438 * This function must have no other side-effects. 1439 */ 1440 private void updateUserActivitySummaryLocked(long now, int dirty) { 1441 // Update the status of the user activity timeout timer. 1442 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1443 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1444 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1445 1446 long nextTimeout = 0; 1447 if (mWakefulness == WAKEFULNESS_AWAKE 1448 || mWakefulness == WAKEFULNESS_DREAMING 1449 || mWakefulness == WAKEFULNESS_DOZING) { 1450 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1451 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1452 1453 mUserActivitySummary = 0; 1454 if (mLastUserActivityTime >= mLastWakeTime) { 1455 nextTimeout = mLastUserActivityTime 1456 + screenOffTimeout - screenDimDuration; 1457 if (now < nextTimeout) { 1458 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1459 } else { 1460 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1461 if (now < nextTimeout) { 1462 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1463 } 1464 } 1465 } 1466 if (mUserActivitySummary == 0 1467 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1468 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1469 if (now < nextTimeout) { 1470 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_BRIGHT) { 1471 mUserActivitySummary = USER_ACTIVITY_SCREEN_BRIGHT; 1472 } else if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DIM) { 1473 mUserActivitySummary = USER_ACTIVITY_SCREEN_DIM; 1474 } 1475 } 1476 } 1477 if (mUserActivitySummary != 0) { 1478 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1479 msg.setAsynchronous(true); 1480 mHandler.sendMessageAtTime(msg, nextTimeout); 1481 } 1482 } else { 1483 mUserActivitySummary = 0; 1484 } 1485 1486 if (DEBUG_SPEW) { 1487 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1488 + wakefulnessToString(mWakefulness) 1489 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1490 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1491 } 1492 } 1493 } 1494 1495 /** 1496 * Called when a user activity timeout has occurred. 1497 * Simply indicates that something about user activity has changed so that the new 1498 * state can be recomputed when the power state is updated. 1499 * 1500 * This function must have no other side-effects besides setting the dirty 1501 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1502 */ 1503 private void handleUserActivityTimeout() { // runs on handler thread 1504 synchronized (mLock) { 1505 if (DEBUG_SPEW) { 1506 Slog.d(TAG, "handleUserActivityTimeout"); 1507 } 1508 1509 mDirty |= DIRTY_USER_ACTIVITY; 1510 updatePowerStateLocked(); 1511 } 1512 } 1513 1514 private int getScreenOffTimeoutLocked() { 1515 int timeout = mScreenOffTimeoutSetting; 1516 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1517 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1518 } 1519 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1520 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1521 } 1522 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1523 } 1524 1525 private int getScreenDimDurationLocked(int screenOffTimeout) { 1526 return Math.min(mMaximumScreenDimDurationConfig, 1527 (int)(screenOffTimeout * mMaximumScreenDimRatioConfig)); 1528 } 1529 1530 /** 1531 * Updates the wakefulness of the device. 1532 * 1533 * This is the function that decides whether the device should start dreaming 1534 * based on the current wake locks and user activity state. It may modify mDirty 1535 * if the wakefulness changes. 1536 * 1537 * Returns true if the wakefulness changed and we need to restart power state calculation. 1538 */ 1539 private boolean updateWakefulnessLocked(int dirty) { 1540 boolean changed = false; 1541 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1542 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1543 | DIRTY_DOCK_STATE)) != 0) { 1544 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1545 if (DEBUG_SPEW) { 1546 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1547 } 1548 final long time = SystemClock.uptimeMillis(); 1549 if (shouldNapAtBedTimeLocked()) { 1550 changed = napNoUpdateLocked(time, Process.SYSTEM_UID); 1551 } else { 1552 changed = goToSleepNoUpdateLocked(time, 1553 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0, Process.SYSTEM_UID); 1554 } 1555 } 1556 } 1557 return changed; 1558 } 1559 1560 /** 1561 * Returns true if the device should automatically nap and start dreaming when the user 1562 * activity timeout has expired and it's bedtime. 1563 */ 1564 private boolean shouldNapAtBedTimeLocked() { 1565 return mDreamsActivateOnSleepSetting 1566 || (mDreamsActivateOnDockSetting 1567 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1568 } 1569 1570 /** 1571 * Returns true if the device should go to sleep now. 1572 * Also used when exiting a dream to determine whether we should go back 1573 * to being fully awake or else go to sleep for good. 1574 */ 1575 private boolean isItBedTimeYetLocked() { 1576 return mBootCompleted && !isBeingKeptAwakeLocked(); 1577 } 1578 1579 /** 1580 * Returns true if the device is being kept awake by a wake lock, user activity 1581 * or the stay on while powered setting. We also keep the phone awake when 1582 * the proximity sensor returns a positive result so that the device does not 1583 * lock while in a phone call. This function only controls whether the device 1584 * will go to sleep or dream which is independent of whether it will be allowed 1585 * to suspend. 1586 */ 1587 private boolean isBeingKeptAwakeLocked() { 1588 return mStayOn 1589 || mProximityPositive 1590 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1591 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1592 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1593 } 1594 1595 /** 1596 * Determines whether to post a message to the sandman to update the dream state. 1597 */ 1598 private void updateDreamLocked(int dirty) { 1599 if ((dirty & (DIRTY_WAKEFULNESS 1600 | DIRTY_USER_ACTIVITY 1601 | DIRTY_WAKE_LOCKS 1602 | DIRTY_BOOT_COMPLETED 1603 | DIRTY_SETTINGS 1604 | DIRTY_IS_POWERED 1605 | DIRTY_STAY_ON 1606 | DIRTY_PROXIMITY_POSITIVE 1607 | DIRTY_BATTERY_STATE)) != 0) { 1608 scheduleSandmanLocked(); 1609 } 1610 } 1611 1612 private void scheduleSandmanLocked() { 1613 if (!mSandmanScheduled) { 1614 mSandmanScheduled = true; 1615 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1616 msg.setAsynchronous(true); 1617 mHandler.sendMessage(msg); 1618 } 1619 } 1620 1621 /** 1622 * Called when the device enters or exits a dreaming or dozing state. 1623 * 1624 * We do this asynchronously because we must call out of the power manager to start 1625 * the dream and we don't want to hold our lock while doing so. There is a risk that 1626 * the device will wake or go to sleep in the meantime so we have to handle that case. 1627 */ 1628 private void handleSandman() { // runs on handler thread 1629 // Handle preconditions. 1630 final boolean startDreaming; 1631 final int wakefulness; 1632 synchronized (mLock) { 1633 mSandmanScheduled = false; 1634 wakefulness = mWakefulness; 1635 if (mSandmanSummoned) { 1636 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1637 || wakefulness == WAKEFULNESS_DOZING); 1638 mSandmanSummoned = false; 1639 } else { 1640 startDreaming = false; 1641 } 1642 } 1643 1644 // Start dreaming if needed. 1645 // We only control the dream on the handler thread, so we don't need to worry about 1646 // concurrent attempts to start or stop the dream. 1647 final boolean isDreaming; 1648 if (mDreamManager != null) { 1649 // Restart the dream whenever the sandman is summoned. 1650 if (startDreaming) { 1651 mDreamManager.stopDream(false /*immediate*/); 1652 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1653 } 1654 isDreaming = mDreamManager.isDreaming(); 1655 } else { 1656 isDreaming = false; 1657 } 1658 1659 // Update dream state. 1660 synchronized (mLock) { 1661 // Remember the initial battery level when the dream started. 1662 if (startDreaming && isDreaming) { 1663 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1664 if (wakefulness == WAKEFULNESS_DOZING) { 1665 Slog.i(TAG, "Dozing..."); 1666 } else { 1667 Slog.i(TAG, "Dreaming..."); 1668 } 1669 } 1670 1671 // If preconditions changed, wait for the next iteration to determine 1672 // whether the dream should continue (or be restarted). 1673 if (mSandmanSummoned || mWakefulness != wakefulness) { 1674 return; // wait for next cycle 1675 } 1676 1677 // Determine whether the dream should continue. 1678 if (wakefulness == WAKEFULNESS_DREAMING) { 1679 if (isDreaming && canDreamLocked()) { 1680 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1681 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1682 - mDreamsBatteryLevelDrainCutoffConfig 1683 && !isBeingKeptAwakeLocked()) { 1684 // If the user activity timeout expired and the battery appears 1685 // to be draining faster than it is charging then stop dreaming 1686 // and go to sleep. 1687 Slog.i(TAG, "Stopping dream because the battery appears to " 1688 + "be draining faster than it is charging. " 1689 + "Battery level when dream started: " 1690 + mBatteryLevelWhenDreamStarted + "%. " 1691 + "Battery level now: " + mBatteryLevel + "%."); 1692 } else { 1693 return; // continue dreaming 1694 } 1695 } 1696 1697 // Dream has ended or will be stopped. Update the power state. 1698 if (isItBedTimeYetLocked()) { 1699 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1700 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0, Process.SYSTEM_UID); 1701 updatePowerStateLocked(); 1702 } else { 1703 wakeUpNoUpdateLocked(SystemClock.uptimeMillis(), Process.SYSTEM_UID); 1704 updatePowerStateLocked(); 1705 } 1706 } else if (wakefulness == WAKEFULNESS_DOZING) { 1707 if (isDreaming) { 1708 return; // continue dozing 1709 } 1710 1711 // Doze has ended or will be stopped. Update the power state. 1712 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis(), Process.SYSTEM_UID); 1713 updatePowerStateLocked(); 1714 } 1715 } 1716 1717 // Stop dream. 1718 if (isDreaming) { 1719 mDreamManager.stopDream(false /*immediate*/); 1720 } 1721 } 1722 1723 /** 1724 * Returns true if the device is allowed to dream in its current state. 1725 * This function is not called when dozing. 1726 */ 1727 private boolean canDreamLocked() { 1728 if (mWakefulness != WAKEFULNESS_DREAMING 1729 || !mDreamsSupportedConfig 1730 || !mDreamsEnabledSetting 1731 || !mDisplayPowerRequest.isBrightOrDim() 1732 || !mBootCompleted) { 1733 return false; 1734 } 1735 if (!isBeingKeptAwakeLocked()) { 1736 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1737 return false; 1738 } 1739 if (!mIsPowered 1740 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1741 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1742 return false; 1743 } 1744 if (mIsPowered 1745 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1746 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1747 return false; 1748 } 1749 } 1750 return true; 1751 } 1752 1753 private void handleScreenOnBlockerReleased() { 1754 synchronized (mLock) { 1755 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1756 updatePowerStateLocked(); 1757 } 1758 } 1759 1760 /** 1761 * Updates the display power state asynchronously. 1762 * When the update is finished, mDisplayReady will be set to true. The display 1763 * controller posts a message to tell us when the actual display power state 1764 * has been updated so we come back here to double-check and finish up. 1765 * 1766 * This function recalculates the display power state each time. 1767 */ 1768 private void updateDisplayPowerStateLocked(int dirty) { 1769 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1770 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1771 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1772 mDisplayPowerRequest.policy = getDesiredScreenPolicyLocked(); 1773 1774 int screenBrightness = mScreenBrightnessSettingDefault; 1775 float screenAutoBrightnessAdjustment = 0.0f; 1776 boolean autoBrightness = (mScreenBrightnessModeSetting == 1777 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1778 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1779 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1780 autoBrightness = false; 1781 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1782 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1783 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1784 screenBrightness = mScreenBrightnessSetting; 1785 } 1786 if (autoBrightness) { 1787 screenBrightness = mScreenBrightnessSettingDefault; 1788 if (isValidAutoBrightnessAdjustment( 1789 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1790 screenAutoBrightnessAdjustment = 1791 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1792 } else if (isValidAutoBrightnessAdjustment( 1793 mScreenAutoBrightnessAdjustmentSetting)) { 1794 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1795 } 1796 } 1797 screenBrightness = Math.max(Math.min(screenBrightness, 1798 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1799 screenAutoBrightnessAdjustment = Math.max(Math.min( 1800 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1801 mDisplayPowerRequest.screenBrightness = screenBrightness; 1802 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1803 screenAutoBrightnessAdjustment; 1804 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1805 1806 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1807 1808 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1809 1810 mDisplayPowerRequest.lowPowerMode = mLowPowerModeEnabled; 1811 1812 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DOZE) { 1813 mDisplayPowerRequest.dozeScreenState = mDozeScreenStateOverrideFromDreamManager; 1814 mDisplayPowerRequest.dozeScreenBrightness = 1815 mDozeScreenBrightnessOverrideFromDreamManager; 1816 } else { 1817 mDisplayPowerRequest.dozeScreenState = Display.STATE_UNKNOWN; 1818 mDisplayPowerRequest.dozeScreenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 1819 } 1820 1821 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1822 mRequestWaitForNegativeProximity); 1823 mRequestWaitForNegativeProximity = false; 1824 1825 if (DEBUG_SPEW) { 1826 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1827 + ", policy=" + mDisplayPowerRequest.policy 1828 + ", mWakefulness=" + mWakefulness 1829 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1830 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1831 + ", mBootCompleted=" + mBootCompleted); 1832 } 1833 } 1834 } 1835 1836 private static boolean isValidBrightness(int value) { 1837 return value >= 0 && value <= 255; 1838 } 1839 1840 private static boolean isValidAutoBrightnessAdjustment(float value) { 1841 // Handles NaN by always returning false. 1842 return value >= -1.0f && value <= 1.0f; 1843 } 1844 1845 private int getDesiredScreenPolicyLocked() { 1846 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1847 return DisplayPowerRequest.POLICY_OFF; 1848 } 1849 1850 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1851 return DisplayPowerRequest.POLICY_DOZE; 1852 } 1853 1854 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1855 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1856 || !mBootCompleted) { 1857 return DisplayPowerRequest.POLICY_BRIGHT; 1858 } 1859 1860 return DisplayPowerRequest.POLICY_DIM; 1861 } 1862 1863 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1864 new DisplayManagerInternal.DisplayPowerCallbacks() { 1865 private int mDisplayState = Display.STATE_UNKNOWN; 1866 1867 @Override 1868 public void onStateChanged() { 1869 synchronized (mLock) { 1870 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1871 updatePowerStateLocked(); 1872 } 1873 } 1874 1875 @Override 1876 public void onProximityPositive() { 1877 synchronized (mLock) { 1878 mProximityPositive = true; 1879 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1880 updatePowerStateLocked(); 1881 } 1882 } 1883 1884 @Override 1885 public void onProximityNegative() { 1886 synchronized (mLock) { 1887 mProximityPositive = false; 1888 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1889 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1890 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1891 updatePowerStateLocked(); 1892 } 1893 } 1894 1895 @Override 1896 public void onDisplayStateChange(int state) { 1897 // This method is only needed to support legacy display blanking behavior 1898 // where the display's power state is coupled to suspend or to the power HAL. 1899 // The order of operations matters here. 1900 synchronized (mLock) { 1901 if (mDisplayState != state) { 1902 mDisplayState = state; 1903 if (state == Display.STATE_OFF) { 1904 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1905 setHalInteractiveModeLocked(false); 1906 } 1907 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1908 setHalAutoSuspendModeLocked(true); 1909 } 1910 } else { 1911 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1912 setHalAutoSuspendModeLocked(false); 1913 } 1914 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1915 setHalInteractiveModeLocked(true); 1916 } 1917 } 1918 } 1919 } 1920 } 1921 1922 @Override 1923 public void acquireSuspendBlocker() { 1924 mDisplaySuspendBlocker.acquire(); 1925 } 1926 1927 @Override 1928 public void releaseSuspendBlocker() { 1929 mDisplaySuspendBlocker.release(); 1930 } 1931 1932 @Override 1933 public String toString() { 1934 synchronized (this) { 1935 return "state=" + Display.stateToString(mDisplayState); 1936 } 1937 } 1938 }; 1939 1940 private boolean shouldUseProximitySensorLocked() { 1941 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1942 } 1943 1944 /** 1945 * Updates the suspend blocker that keeps the CPU alive. 1946 * 1947 * This function must have no other side-effects. 1948 */ 1949 private void updateSuspendBlockerLocked() { 1950 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1951 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1952 final boolean autoSuspend = !needDisplaySuspendBlocker; 1953 1954 // Disable auto-suspend if needed. 1955 if (!autoSuspend) { 1956 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1957 setHalAutoSuspendModeLocked(false); 1958 } 1959 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1960 setHalInteractiveModeLocked(true); 1961 } 1962 } 1963 1964 // First acquire suspend blockers if needed. 1965 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1966 mWakeLockSuspendBlocker.acquire(); 1967 mHoldingWakeLockSuspendBlocker = true; 1968 } 1969 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1970 mDisplaySuspendBlocker.acquire(); 1971 mHoldingDisplaySuspendBlocker = true; 1972 } 1973 1974 // Then release suspend blockers if needed. 1975 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1976 mWakeLockSuspendBlocker.release(); 1977 mHoldingWakeLockSuspendBlocker = false; 1978 } 1979 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1980 mDisplaySuspendBlocker.release(); 1981 mHoldingDisplaySuspendBlocker = false; 1982 } 1983 1984 // Enable auto-suspend if needed. 1985 if (autoSuspend) { 1986 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1987 setHalInteractiveModeLocked(false); 1988 } 1989 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1990 setHalAutoSuspendModeLocked(true); 1991 } 1992 } 1993 } 1994 1995 /** 1996 * Return true if we must keep a suspend blocker active on behalf of the display. 1997 * We do so if the screen is on or is in transition between states. 1998 */ 1999 private boolean needDisplaySuspendBlockerLocked() { 2000 if (!mDisplayReady) { 2001 return true; 2002 } 2003 if (mDisplayPowerRequest.isBrightOrDim()) { 2004 // If we asked for the screen to be on but it is off due to the proximity 2005 // sensor then we may suspend but only if the configuration allows it. 2006 // On some hardware it may not be safe to suspend because the proximity 2007 // sensor may not be correctly configured as a wake-up source. 2008 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 2009 || !mSuspendWhenScreenOffDueToProximityConfig) { 2010 return true; 2011 } 2012 } 2013 // Let the system suspend if the screen is off or dozing. 2014 return false; 2015 } 2016 2017 private void setHalAutoSuspendModeLocked(boolean enable) { 2018 if (enable != mHalAutoSuspendModeEnabled) { 2019 if (DEBUG) { 2020 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 2021 } 2022 mHalAutoSuspendModeEnabled = enable; 2023 Trace.traceBegin(Trace.TRACE_TAG_POWER, "setHalAutoSuspend(" + enable + ")"); 2024 try { 2025 nativeSetAutoSuspend(enable); 2026 } finally { 2027 Trace.traceEnd(Trace.TRACE_TAG_POWER); 2028 } 2029 } 2030 } 2031 2032 private void setHalInteractiveModeLocked(boolean enable) { 2033 if (enable != mHalInteractiveModeEnabled) { 2034 if (DEBUG) { 2035 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 2036 } 2037 mHalInteractiveModeEnabled = enable; 2038 Trace.traceBegin(Trace.TRACE_TAG_POWER, "setHalInteractive(" + enable + ")"); 2039 try { 2040 nativeSetInteractive(enable); 2041 } finally { 2042 Trace.traceEnd(Trace.TRACE_TAG_POWER); 2043 } 2044 } 2045 } 2046 2047 private boolean isInteractiveInternal() { 2048 synchronized (mLock) { 2049 return mInteractive; 2050 } 2051 } 2052 2053 private boolean isLowPowerModeInternal() { 2054 synchronized (mLock) { 2055 return mLowPowerModeEnabled; 2056 } 2057 } 2058 2059 private void handleBatteryStateChangedLocked() { 2060 mDirty |= DIRTY_BATTERY_STATE; 2061 updatePowerStateLocked(); 2062 } 2063 2064 private void startWatchingForBootAnimationFinished() { 2065 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 2066 } 2067 2068 private void checkIfBootAnimationFinished() { 2069 if (DEBUG) { 2070 Slog.d(TAG, "Check if boot animation finished..."); 2071 } 2072 2073 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 2074 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 2075 BOOT_ANIMATION_POLL_INTERVAL); 2076 return; 2077 } 2078 2079 synchronized (mLock) { 2080 if (!mBootCompleted) { 2081 Slog.i(TAG, "Boot animation finished."); 2082 handleBootCompletedLocked(); 2083 } 2084 } 2085 } 2086 2087 private void handleBootCompletedLocked() { 2088 final long now = SystemClock.uptimeMillis(); 2089 mBootCompleted = true; 2090 mDirty |= DIRTY_BOOT_COMPLETED; 2091 userActivityNoUpdateLocked( 2092 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 2093 updatePowerStateLocked(); 2094 } 2095 2096 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 2097 final String reason, boolean wait) { 2098 if (mHandler == null || !mSystemReady) { 2099 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 2100 } 2101 2102 Runnable runnable = new Runnable() { 2103 @Override 2104 public void run() { 2105 synchronized (this) { 2106 if (shutdown) { 2107 ShutdownThread.shutdown(mContext, confirm); 2108 } else { 2109 ShutdownThread.reboot(mContext, reason, confirm); 2110 } 2111 } 2112 } 2113 }; 2114 2115 // ShutdownThread must run on a looper capable of displaying the UI. 2116 Message msg = Message.obtain(mHandler, runnable); 2117 msg.setAsynchronous(true); 2118 mHandler.sendMessage(msg); 2119 2120 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 2121 if (wait) { 2122 synchronized (runnable) { 2123 while (true) { 2124 try { 2125 runnable.wait(); 2126 } catch (InterruptedException e) { 2127 } 2128 } 2129 } 2130 } 2131 } 2132 2133 private void crashInternal(final String message) { 2134 Thread t = new Thread("PowerManagerService.crash()") { 2135 @Override 2136 public void run() { 2137 throw new RuntimeException(message); 2138 } 2139 }; 2140 try { 2141 t.start(); 2142 t.join(); 2143 } catch (InterruptedException e) { 2144 Log.wtf(TAG, e); 2145 } 2146 } 2147 2148 private void setStayOnSettingInternal(int val) { 2149 Settings.Global.putInt(mContext.getContentResolver(), 2150 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 2151 } 2152 2153 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 2154 synchronized (mLock) { 2155 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 2156 mDirty |= DIRTY_SETTINGS; 2157 updatePowerStateLocked(); 2158 } 2159 } 2160 2161 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 2162 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 2163 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 2164 } 2165 2166 private void setAttentionLightInternal(boolean on, int color) { 2167 Light light; 2168 synchronized (mLock) { 2169 if (!mSystemReady) { 2170 return; 2171 } 2172 light = mAttentionLight; 2173 } 2174 2175 // Control light outside of lock. 2176 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 2177 } 2178 2179 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 2180 synchronized (mLock) { 2181 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 2182 mScreenBrightnessOverrideFromWindowManager = brightness; 2183 mDirty |= DIRTY_SETTINGS; 2184 updatePowerStateLocked(); 2185 } 2186 } 2187 } 2188 2189 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 2190 synchronized (mLock) { 2191 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 2192 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 2193 mDirty |= DIRTY_SETTINGS; 2194 updatePowerStateLocked(); 2195 } 2196 } 2197 } 2198 2199 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2200 synchronized (mLock) { 2201 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2202 mTemporaryScreenBrightnessSettingOverride = brightness; 2203 mDirty |= DIRTY_SETTINGS; 2204 updatePowerStateLocked(); 2205 } 2206 } 2207 } 2208 2209 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2210 synchronized (mLock) { 2211 // Note: This condition handles NaN because NaN is not equal to any other 2212 // value, including itself. 2213 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2214 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2215 mDirty |= DIRTY_SETTINGS; 2216 updatePowerStateLocked(); 2217 } 2218 } 2219 } 2220 2221 private void setDozeOverrideFromDreamManagerInternal( 2222 int screenState, int screenBrightness) { 2223 synchronized (mLock) { 2224 if (mDozeScreenStateOverrideFromDreamManager != screenState 2225 || mDozeScreenBrightnessOverrideFromDreamManager != screenBrightness) { 2226 mDozeScreenStateOverrideFromDreamManager = screenState; 2227 mDozeScreenBrightnessOverrideFromDreamManager = screenBrightness; 2228 mDirty |= DIRTY_SETTINGS; 2229 updatePowerStateLocked(); 2230 } 2231 } 2232 } 2233 2234 private void powerHintInternal(int hintId, int data) { 2235 nativeSendPowerHint(hintId, data); 2236 } 2237 2238 /** 2239 * Low-level function turn the device off immediately, without trying 2240 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2241 */ 2242 public static void lowLevelShutdown() { 2243 SystemProperties.set("sys.powerctl", "shutdown"); 2244 } 2245 2246 /** 2247 * Low-level function to reboot the device. On success, this 2248 * function doesn't return. If more than 20 seconds passes from 2249 * the time a reboot is requested (120 seconds for reboot to 2250 * recovery), this method returns. 2251 * 2252 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2253 */ 2254 public static void lowLevelReboot(String reason) { 2255 if (reason == null) { 2256 reason = ""; 2257 } 2258 long duration; 2259 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2260 // If we are rebooting to go into recovery, instead of 2261 // setting sys.powerctl directly we'll start the 2262 // pre-recovery service which will do some preparation for 2263 // recovery and then reboot for us. 2264 // 2265 // This preparation can take more than 20 seconds if 2266 // there's a very large update package, so lengthen the 2267 // timeout. 2268 SystemProperties.set("ctl.start", "pre-recovery"); 2269 duration = 120 * 1000L; 2270 } else { 2271 SystemProperties.set("sys.powerctl", "reboot," + reason); 2272 duration = 20 * 1000L; 2273 } 2274 try { 2275 Thread.sleep(duration); 2276 } catch (InterruptedException e) { 2277 Thread.currentThread().interrupt(); 2278 } 2279 } 2280 2281 @Override // Watchdog.Monitor implementation 2282 public void monitor() { 2283 // Grab and release lock for watchdog monitor to detect deadlocks. 2284 synchronized (mLock) { 2285 } 2286 } 2287 2288 private void dumpInternal(PrintWriter pw) { 2289 pw.println("POWER MANAGER (dumpsys power)\n"); 2290 2291 final WirelessChargerDetector wcd; 2292 synchronized (mLock) { 2293 pw.println("Power Manager State:"); 2294 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2295 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2296 pw.println(" mInteractive=" + mInteractive); 2297 pw.println(" mIsPowered=" + mIsPowered); 2298 pw.println(" mPlugType=" + mPlugType); 2299 pw.println(" mBatteryLevel=" + mBatteryLevel); 2300 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2301 pw.println(" mDockState=" + mDockState); 2302 pw.println(" mStayOn=" + mStayOn); 2303 pw.println(" mProximityPositive=" + mProximityPositive); 2304 pw.println(" mBootCompleted=" + mBootCompleted); 2305 pw.println(" mSystemReady=" + mSystemReady); 2306 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2307 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2308 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2309 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2310 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2311 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2312 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2313 pw.println(" mLowPowerModeEnabled=" + mLowPowerModeEnabled); 2314 pw.println(" mBatteryLevelLow=" + mBatteryLevelLow); 2315 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2316 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2317 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2318 pw.println(" mLastUserActivityTimeNoChangeLights=" 2319 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2320 pw.println(" mDisplayReady=" + mDisplayReady); 2321 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2322 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2323 2324 pw.println(); 2325 pw.println("Settings and Configuration:"); 2326 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2327 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2328 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2329 + mDecoupleHalInteractiveModeFromDisplayConfig); 2330 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2331 + mWakeUpWhenPluggedOrUnpluggedConfig); 2332 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2333 + mSuspendWhenScreenOffDueToProximityConfig); 2334 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2335 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2336 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2337 + mDreamsActivatedOnSleepByDefaultConfig); 2338 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2339 + mDreamsActivatedOnDockByDefaultConfig); 2340 pw.println(" mDreamsEnabledOnBatteryConfig=" 2341 + mDreamsEnabledOnBatteryConfig); 2342 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2343 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2344 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2345 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2346 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2347 + mDreamsBatteryLevelDrainCutoffConfig); 2348 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2349 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2350 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2351 pw.println(" mLowPowerModeSetting=" + mLowPowerModeSetting); 2352 pw.println(" mAutoLowPowerModeEnabled=" + mAutoLowPowerModeEnabled); 2353 pw.println(" mAutoLowPowerModeSnoozing=" + mAutoLowPowerModeSnoozing); 2354 pw.println(" mMinimumScreenOffTimeoutConfig=" + mMinimumScreenOffTimeoutConfig); 2355 pw.println(" mMaximumScreenDimDurationConfig=" + mMaximumScreenDimDurationConfig); 2356 pw.println(" mMaximumScreenDimRatioConfig=" + mMaximumScreenDimRatioConfig); 2357 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2358 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2359 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2360 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2361 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2362 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2363 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2364 + mScreenAutoBrightnessAdjustmentSetting); 2365 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2366 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2367 + mScreenBrightnessOverrideFromWindowManager); 2368 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2369 + mUserActivityTimeoutOverrideFromWindowManager); 2370 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2371 + mTemporaryScreenBrightnessSettingOverride); 2372 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2373 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2374 pw.println(" mDozeScreenStateOverrideFromDreamManager=" 2375 + mDozeScreenStateOverrideFromDreamManager); 2376 pw.println(" mDozeScreenBrightnessOverrideFromDreamManager=" 2377 + mDozeScreenBrightnessOverrideFromDreamManager); 2378 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2379 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2380 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2381 2382 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2383 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2384 pw.println(); 2385 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2386 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2387 2388 pw.println(); 2389 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2390 for (WakeLock wl : mWakeLocks) { 2391 pw.println(" " + wl); 2392 } 2393 2394 pw.println(); 2395 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2396 for (SuspendBlocker sb : mSuspendBlockers) { 2397 pw.println(" " + sb); 2398 } 2399 2400 pw.println(); 2401 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2402 2403 pw.println(); 2404 pw.println("Display Power: " + mDisplayPowerCallbacks); 2405 2406 wcd = mWirelessChargerDetector; 2407 } 2408 2409 if (wcd != null) { 2410 wcd.dump(pw); 2411 } 2412 } 2413 2414 private SuspendBlocker createSuspendBlockerLocked(String name) { 2415 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2416 mSuspendBlockers.add(suspendBlocker); 2417 return suspendBlocker; 2418 } 2419 2420 private static String wakefulnessToString(int wakefulness) { 2421 switch (wakefulness) { 2422 case WAKEFULNESS_ASLEEP: 2423 return "Asleep"; 2424 case WAKEFULNESS_AWAKE: 2425 return "Awake"; 2426 case WAKEFULNESS_DREAMING: 2427 return "Dreaming"; 2428 case WAKEFULNESS_DOZING: 2429 return "Dozing"; 2430 default: 2431 return Integer.toString(wakefulness); 2432 } 2433 } 2434 2435 private static WorkSource copyWorkSource(WorkSource workSource) { 2436 return workSource != null ? new WorkSource(workSource) : null; 2437 } 2438 2439 private final class BatteryReceiver extends BroadcastReceiver { 2440 @Override 2441 public void onReceive(Context context, Intent intent) { 2442 synchronized (mLock) { 2443 handleBatteryStateChangedLocked(); 2444 } 2445 } 2446 } 2447 2448 private final class DreamReceiver extends BroadcastReceiver { 2449 @Override 2450 public void onReceive(Context context, Intent intent) { 2451 synchronized (mLock) { 2452 scheduleSandmanLocked(); 2453 } 2454 } 2455 } 2456 2457 private final class UserSwitchedReceiver extends BroadcastReceiver { 2458 @Override 2459 public void onReceive(Context context, Intent intent) { 2460 synchronized (mLock) { 2461 handleSettingsChangedLocked(); 2462 } 2463 } 2464 } 2465 2466 private final class DockReceiver extends BroadcastReceiver { 2467 @Override 2468 public void onReceive(Context context, Intent intent) { 2469 synchronized (mLock) { 2470 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2471 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2472 if (mDockState != dockState) { 2473 mDockState = dockState; 2474 mDirty |= DIRTY_DOCK_STATE; 2475 updatePowerStateLocked(); 2476 } 2477 } 2478 } 2479 } 2480 2481 private final class SettingsObserver extends ContentObserver { 2482 public SettingsObserver(Handler handler) { 2483 super(handler); 2484 } 2485 2486 @Override 2487 public void onChange(boolean selfChange, Uri uri) { 2488 synchronized (mLock) { 2489 handleSettingsChangedLocked(); 2490 } 2491 } 2492 } 2493 2494 /** 2495 * Handler for asynchronous operations performed by the power manager. 2496 */ 2497 private final class PowerManagerHandler extends Handler { 2498 public PowerManagerHandler(Looper looper) { 2499 super(looper, null, true /*async*/); 2500 } 2501 2502 @Override 2503 public void handleMessage(Message msg) { 2504 switch (msg.what) { 2505 case MSG_USER_ACTIVITY_TIMEOUT: 2506 handleUserActivityTimeout(); 2507 break; 2508 case MSG_SANDMAN: 2509 handleSandman(); 2510 break; 2511 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2512 handleScreenOnBlockerReleased(); 2513 break; 2514 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2515 checkIfBootAnimationFinished(); 2516 break; 2517 } 2518 } 2519 } 2520 2521 /** 2522 * Represents a wake lock that has been acquired by an application. 2523 */ 2524 private final class WakeLock implements IBinder.DeathRecipient { 2525 public final IBinder mLock; 2526 public int mFlags; 2527 public String mTag; 2528 public final String mPackageName; 2529 public WorkSource mWorkSource; 2530 public String mHistoryTag; 2531 public final int mOwnerUid; 2532 public final int mOwnerPid; 2533 public boolean mNotifiedAcquired; 2534 2535 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2536 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2537 mLock = lock; 2538 mFlags = flags; 2539 mTag = tag; 2540 mPackageName = packageName; 2541 mWorkSource = copyWorkSource(workSource); 2542 mHistoryTag = historyTag; 2543 mOwnerUid = ownerUid; 2544 mOwnerPid = ownerPid; 2545 } 2546 2547 @Override 2548 public void binderDied() { 2549 PowerManagerService.this.handleWakeLockDeath(this); 2550 } 2551 2552 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2553 int ownerUid, int ownerPid) { 2554 return mFlags == flags 2555 && mTag.equals(tag) 2556 && hasSameWorkSource(workSource) 2557 && mOwnerUid == ownerUid 2558 && mOwnerPid == ownerPid; 2559 } 2560 2561 public void updateProperties(int flags, String tag, String packageName, 2562 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2563 if (!mPackageName.equals(packageName)) { 2564 throw new IllegalStateException("Existing wake lock package name changed: " 2565 + mPackageName + " to " + packageName); 2566 } 2567 if (mOwnerUid != ownerUid) { 2568 throw new IllegalStateException("Existing wake lock uid changed: " 2569 + mOwnerUid + " to " + ownerUid); 2570 } 2571 if (mOwnerPid != ownerPid) { 2572 throw new IllegalStateException("Existing wake lock pid changed: " 2573 + mOwnerPid + " to " + ownerPid); 2574 } 2575 mFlags = flags; 2576 mTag = tag; 2577 updateWorkSource(workSource); 2578 mHistoryTag = historyTag; 2579 } 2580 2581 public boolean hasSameWorkSource(WorkSource workSource) { 2582 return Objects.equal(mWorkSource, workSource); 2583 } 2584 2585 public void updateWorkSource(WorkSource workSource) { 2586 mWorkSource = copyWorkSource(workSource); 2587 } 2588 2589 @Override 2590 public String toString() { 2591 return getLockLevelString() 2592 + " '" + mTag + "'" + getLockFlagsString() 2593 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2594 } 2595 2596 @SuppressWarnings("deprecation") 2597 private String getLockLevelString() { 2598 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2599 case PowerManager.FULL_WAKE_LOCK: 2600 return "FULL_WAKE_LOCK "; 2601 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2602 return "SCREEN_BRIGHT_WAKE_LOCK "; 2603 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2604 return "SCREEN_DIM_WAKE_LOCK "; 2605 case PowerManager.PARTIAL_WAKE_LOCK: 2606 return "PARTIAL_WAKE_LOCK "; 2607 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2608 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2609 case PowerManager.DOZE_WAKE_LOCK: 2610 return "DOZE_WAKE_LOCK "; 2611 default: 2612 return "??? "; 2613 } 2614 } 2615 2616 private String getLockFlagsString() { 2617 String result = ""; 2618 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2619 result += " ACQUIRE_CAUSES_WAKEUP"; 2620 } 2621 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2622 result += " ON_AFTER_RELEASE"; 2623 } 2624 return result; 2625 } 2626 } 2627 2628 private final class SuspendBlockerImpl implements SuspendBlocker { 2629 private final String mName; 2630 private final String mTraceName; 2631 private int mReferenceCount; 2632 2633 public SuspendBlockerImpl(String name) { 2634 mName = name; 2635 mTraceName = "SuspendBlocker (" + name + ")"; 2636 } 2637 2638 @Override 2639 protected void finalize() throws Throwable { 2640 try { 2641 if (mReferenceCount != 0) { 2642 Slog.wtf(TAG, "Suspend blocker \"" + mName 2643 + "\" was finalized without being released!"); 2644 mReferenceCount = 0; 2645 nativeReleaseSuspendBlocker(mName); 2646 Trace.asyncTraceEnd(Trace.TRACE_TAG_POWER, mTraceName, 0); 2647 } 2648 } finally { 2649 super.finalize(); 2650 } 2651 } 2652 2653 @Override 2654 public void acquire() { 2655 synchronized (this) { 2656 mReferenceCount += 1; 2657 if (mReferenceCount == 1) { 2658 if (DEBUG_SPEW) { 2659 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2660 } 2661 Trace.asyncTraceBegin(Trace.TRACE_TAG_POWER, mTraceName, 0); 2662 nativeAcquireSuspendBlocker(mName); 2663 } 2664 } 2665 } 2666 2667 @Override 2668 public void release() { 2669 synchronized (this) { 2670 mReferenceCount -= 1; 2671 if (mReferenceCount == 0) { 2672 if (DEBUG_SPEW) { 2673 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2674 } 2675 nativeReleaseSuspendBlocker(mName); 2676 Trace.asyncTraceEnd(Trace.TRACE_TAG_POWER, mTraceName, 0); 2677 } else if (mReferenceCount < 0) { 2678 Slog.wtf(TAG, "Suspend blocker \"" + mName 2679 + "\" was released without being acquired!", new Throwable()); 2680 mReferenceCount = 0; 2681 } 2682 } 2683 } 2684 2685 @Override 2686 public String toString() { 2687 synchronized (this) { 2688 return mName + ": ref count=" + mReferenceCount; 2689 } 2690 } 2691 } 2692 2693 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2694 private static final String TRACE_NAME = "ScreenOnBlocker"; 2695 2696 private int mNestCount; 2697 2698 public boolean isHeld() { 2699 synchronized (this) { 2700 return mNestCount != 0; 2701 } 2702 } 2703 2704 @Override 2705 public void acquire() { 2706 synchronized (this) { 2707 mNestCount += 1; 2708 if (DEBUG || true) { 2709 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2710 } 2711 if (mNestCount == 1) { 2712 Trace.asyncTraceBegin(Trace.TRACE_TAG_POWER, TRACE_NAME, 0); 2713 } 2714 } 2715 } 2716 2717 @Override 2718 public void release() { 2719 synchronized (this) { 2720 mNestCount -= 1; 2721 if (mNestCount == 0) { 2722 if (DEBUG || true) { 2723 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2724 } 2725 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2726 Trace.asyncTraceEnd(Trace.TRACE_TAG_POWER, TRACE_NAME, 0); 2727 } else if (mNestCount < 0) { 2728 Slog.wtf(TAG, "Screen on blocker was released without being acquired!", 2729 new Throwable()); 2730 mNestCount = 0; 2731 } 2732 } 2733 } 2734 2735 @Override 2736 public String toString() { 2737 synchronized (this) { 2738 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2739 } 2740 } 2741 } 2742 2743 private final class BinderService extends IPowerManager.Stub { 2744 @Override // Binder call 2745 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2746 String packageName, int uid) { 2747 if (uid < 0) { 2748 uid = Binder.getCallingUid(); 2749 } 2750 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2751 } 2752 2753 @Override // Binder call 2754 public void powerHint(int hintId, int data) { 2755 if (!mSystemReady) { 2756 // Service not ready yet, so who the heck cares about power hints, bah. 2757 return; 2758 } 2759 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2760 powerHintInternal(hintId, data); 2761 } 2762 2763 @Override // Binder call 2764 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2765 WorkSource ws, String historyTag) { 2766 if (lock == null) { 2767 throw new IllegalArgumentException("lock must not be null"); 2768 } 2769 if (packageName == null) { 2770 throw new IllegalArgumentException("packageName must not be null"); 2771 } 2772 PowerManager.validateWakeLockParameters(flags, tag); 2773 2774 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2775 if (ws != null && ws.size() != 0) { 2776 mContext.enforceCallingOrSelfPermission( 2777 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2778 } else { 2779 ws = null; 2780 } 2781 2782 final int uid = Binder.getCallingUid(); 2783 final int pid = Binder.getCallingPid(); 2784 final long ident = Binder.clearCallingIdentity(); 2785 try { 2786 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2787 } finally { 2788 Binder.restoreCallingIdentity(ident); 2789 } 2790 } 2791 2792 @Override // Binder call 2793 public void releaseWakeLock(IBinder lock, int flags) { 2794 if (lock == null) { 2795 throw new IllegalArgumentException("lock must not be null"); 2796 } 2797 2798 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2799 2800 final long ident = Binder.clearCallingIdentity(); 2801 try { 2802 releaseWakeLockInternal(lock, flags); 2803 } finally { 2804 Binder.restoreCallingIdentity(ident); 2805 } 2806 } 2807 2808 @Override // Binder call 2809 public void updateWakeLockUids(IBinder lock, int[] uids) { 2810 WorkSource ws = null; 2811 2812 if (uids != null) { 2813 ws = new WorkSource(); 2814 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2815 // one at a time? 2816 for (int i = 0; i < uids.length; i++) { 2817 ws.add(uids[i]); 2818 } 2819 } 2820 updateWakeLockWorkSource(lock, ws, null); 2821 } 2822 2823 @Override // Binder call 2824 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2825 if (lock == null) { 2826 throw new IllegalArgumentException("lock must not be null"); 2827 } 2828 2829 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2830 if (ws != null && ws.size() != 0) { 2831 mContext.enforceCallingOrSelfPermission( 2832 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2833 } else { 2834 ws = null; 2835 } 2836 2837 final long ident = Binder.clearCallingIdentity(); 2838 try { 2839 updateWakeLockWorkSourceInternal(lock, ws, historyTag); 2840 } finally { 2841 Binder.restoreCallingIdentity(ident); 2842 } 2843 } 2844 2845 @Override // Binder call 2846 public boolean isWakeLockLevelSupported(int level) { 2847 final long ident = Binder.clearCallingIdentity(); 2848 try { 2849 return isWakeLockLevelSupportedInternal(level); 2850 } finally { 2851 Binder.restoreCallingIdentity(ident); 2852 } 2853 } 2854 2855 @Override // Binder call 2856 public void userActivity(long eventTime, int event, int flags) { 2857 final long now = SystemClock.uptimeMillis(); 2858 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2859 != PackageManager.PERMISSION_GRANTED) { 2860 // Once upon a time applications could call userActivity(). 2861 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2862 // request instead of throwing a SecurityException so we don't break old apps. 2863 synchronized (mLock) { 2864 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2865 mLastWarningAboutUserActivityPermission = now; 2866 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2867 + "caller does not have DEVICE_POWER permission. " 2868 + "Please fix your app! " 2869 + " pid=" + Binder.getCallingPid() 2870 + " uid=" + Binder.getCallingUid()); 2871 } 2872 } 2873 return; 2874 } 2875 2876 if (eventTime > SystemClock.uptimeMillis()) { 2877 throw new IllegalArgumentException("event time must not be in the future"); 2878 } 2879 2880 final int uid = Binder.getCallingUid(); 2881 final long ident = Binder.clearCallingIdentity(); 2882 try { 2883 userActivityInternal(eventTime, event, flags, uid); 2884 } finally { 2885 Binder.restoreCallingIdentity(ident); 2886 } 2887 } 2888 2889 @Override // Binder call 2890 public void wakeUp(long eventTime) { 2891 if (eventTime > SystemClock.uptimeMillis()) { 2892 throw new IllegalArgumentException("event time must not be in the future"); 2893 } 2894 2895 mContext.enforceCallingOrSelfPermission( 2896 android.Manifest.permission.DEVICE_POWER, null); 2897 2898 final int uid = Binder.getCallingUid(); 2899 final long ident = Binder.clearCallingIdentity(); 2900 try { 2901 wakeUpInternal(eventTime, uid); 2902 } finally { 2903 Binder.restoreCallingIdentity(ident); 2904 } 2905 } 2906 2907 @Override // Binder call 2908 public void goToSleep(long eventTime, int reason, int flags) { 2909 if (eventTime > SystemClock.uptimeMillis()) { 2910 throw new IllegalArgumentException("event time must not be in the future"); 2911 } 2912 2913 mContext.enforceCallingOrSelfPermission( 2914 android.Manifest.permission.DEVICE_POWER, null); 2915 2916 final int uid = Binder.getCallingUid(); 2917 final long ident = Binder.clearCallingIdentity(); 2918 try { 2919 goToSleepInternal(eventTime, reason, flags, uid); 2920 } finally { 2921 Binder.restoreCallingIdentity(ident); 2922 } 2923 } 2924 2925 @Override // Binder call 2926 public void nap(long eventTime) { 2927 if (eventTime > SystemClock.uptimeMillis()) { 2928 throw new IllegalArgumentException("event time must not be in the future"); 2929 } 2930 2931 mContext.enforceCallingOrSelfPermission( 2932 android.Manifest.permission.DEVICE_POWER, null); 2933 2934 final int uid = Binder.getCallingUid(); 2935 final long ident = Binder.clearCallingIdentity(); 2936 try { 2937 napInternal(eventTime, uid); 2938 } finally { 2939 Binder.restoreCallingIdentity(ident); 2940 } 2941 } 2942 2943 @Override // Binder call 2944 public boolean isInteractive() { 2945 final long ident = Binder.clearCallingIdentity(); 2946 try { 2947 return isInteractiveInternal(); 2948 } finally { 2949 Binder.restoreCallingIdentity(ident); 2950 } 2951 } 2952 2953 @Override // Binder call 2954 public boolean isPowerSaveMode() { 2955 final long ident = Binder.clearCallingIdentity(); 2956 try { 2957 return isLowPowerModeInternal(); 2958 } finally { 2959 Binder.restoreCallingIdentity(ident); 2960 } 2961 } 2962 2963 /** 2964 * Reboots the device. 2965 * 2966 * @param confirm If true, shows a reboot confirmation dialog. 2967 * @param reason The reason for the reboot, or null if none. 2968 * @param wait If true, this call waits for the reboot to complete and does not return. 2969 */ 2970 @Override // Binder call 2971 public void reboot(boolean confirm, String reason, boolean wait) { 2972 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2973 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2974 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 2975 } 2976 2977 final long ident = Binder.clearCallingIdentity(); 2978 try { 2979 shutdownOrRebootInternal(false, confirm, reason, wait); 2980 } finally { 2981 Binder.restoreCallingIdentity(ident); 2982 } 2983 } 2984 2985 /** 2986 * Shuts down the device. 2987 * 2988 * @param confirm If true, shows a shutdown confirmation dialog. 2989 * @param wait If true, this call waits for the shutdown to complete and does not return. 2990 */ 2991 @Override // Binder call 2992 public void shutdown(boolean confirm, boolean wait) { 2993 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2994 2995 final long ident = Binder.clearCallingIdentity(); 2996 try { 2997 shutdownOrRebootInternal(true, confirm, null, wait); 2998 } finally { 2999 Binder.restoreCallingIdentity(ident); 3000 } 3001 } 3002 3003 /** 3004 * Crash the runtime (causing a complete restart of the Android framework). 3005 * Requires REBOOT permission. Mostly for testing. Should not return. 3006 */ 3007 @Override // Binder call 3008 public void crash(String message) { 3009 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 3010 3011 final long ident = Binder.clearCallingIdentity(); 3012 try { 3013 crashInternal(message); 3014 } finally { 3015 Binder.restoreCallingIdentity(ident); 3016 } 3017 } 3018 3019 /** 3020 * Set the setting that determines whether the device stays on when plugged in. 3021 * The argument is a bit string, with each bit specifying a power source that, 3022 * when the device is connected to that source, causes the device to stay on. 3023 * See {@link android.os.BatteryManager} for the list of power sources that 3024 * can be specified. Current values include 3025 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 3026 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 3027 * 3028 * Used by "adb shell svc power stayon ..." 3029 * 3030 * @param val an {@code int} containing the bits that specify which power sources 3031 * should cause the device to stay on. 3032 */ 3033 @Override // Binder call 3034 public void setStayOnSetting(int val) { 3035 mContext.enforceCallingOrSelfPermission( 3036 android.Manifest.permission.WRITE_SETTINGS, null); 3037 3038 final long ident = Binder.clearCallingIdentity(); 3039 try { 3040 setStayOnSettingInternal(val); 3041 } finally { 3042 Binder.restoreCallingIdentity(ident); 3043 } 3044 } 3045 3046 /** 3047 * Used by device administration to set the maximum screen off timeout. 3048 * 3049 * This method must only be called by the device administration policy manager. 3050 */ 3051 @Override // Binder call 3052 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 3053 final long ident = Binder.clearCallingIdentity(); 3054 try { 3055 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 3056 } finally { 3057 Binder.restoreCallingIdentity(ident); 3058 } 3059 } 3060 3061 /** 3062 * Used by the settings application and brightness control widgets to 3063 * temporarily override the current screen brightness setting so that the 3064 * user can observe the effect of an intended settings change without applying 3065 * it immediately. 3066 * 3067 * The override will be canceled when the setting value is next updated. 3068 * 3069 * @param brightness The overridden brightness. 3070 * 3071 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 3072 */ 3073 @Override // Binder call 3074 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 3075 mContext.enforceCallingOrSelfPermission( 3076 android.Manifest.permission.DEVICE_POWER, null); 3077 3078 final long ident = Binder.clearCallingIdentity(); 3079 try { 3080 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 3081 } finally { 3082 Binder.restoreCallingIdentity(ident); 3083 } 3084 } 3085 3086 /** 3087 * Used by the settings application and brightness control widgets to 3088 * temporarily override the current screen auto-brightness adjustment setting so that the 3089 * user can observe the effect of an intended settings change without applying 3090 * it immediately. 3091 * 3092 * The override will be canceled when the setting value is next updated. 3093 * 3094 * @param adj The overridden brightness, or Float.NaN to disable the override. 3095 * 3096 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 3097 */ 3098 @Override // Binder call 3099 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 3100 mContext.enforceCallingOrSelfPermission( 3101 android.Manifest.permission.DEVICE_POWER, null); 3102 3103 final long ident = Binder.clearCallingIdentity(); 3104 try { 3105 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 3106 } finally { 3107 Binder.restoreCallingIdentity(ident); 3108 } 3109 } 3110 3111 /** 3112 * Used by the phone application to make the attention LED flash when ringing. 3113 */ 3114 @Override // Binder call 3115 public void setAttentionLight(boolean on, int color) { 3116 mContext.enforceCallingOrSelfPermission( 3117 android.Manifest.permission.DEVICE_POWER, null); 3118 3119 final long ident = Binder.clearCallingIdentity(); 3120 try { 3121 setAttentionLightInternal(on, color); 3122 } finally { 3123 Binder.restoreCallingIdentity(ident); 3124 } 3125 } 3126 3127 @Override // Binder call 3128 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3129 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 3130 != PackageManager.PERMISSION_GRANTED) { 3131 pw.println("Permission Denial: can't dump PowerManager from from pid=" 3132 + Binder.getCallingPid() 3133 + ", uid=" + Binder.getCallingUid()); 3134 return; 3135 } 3136 3137 final long ident = Binder.clearCallingIdentity(); 3138 try { 3139 dumpInternal(pw); 3140 } finally { 3141 Binder.restoreCallingIdentity(ident); 3142 } 3143 } 3144 } 3145 3146 private final class LocalService extends PowerManagerInternal { 3147 @Override 3148 public void setScreenBrightnessOverrideFromWindowManager(int screenBrightness) { 3149 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3150 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3151 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3152 } 3153 setScreenBrightnessOverrideFromWindowManagerInternal(screenBrightness); 3154 } 3155 3156 @Override 3157 public void setButtonBrightnessOverrideFromWindowManager(int screenBrightness) { 3158 // Do nothing. 3159 // Button lights are not currently supported in the new implementation. 3160 } 3161 3162 @Override 3163 public void setDozeOverrideFromDreamManager(int screenState, int screenBrightness) { 3164 switch (screenState) { 3165 case Display.STATE_UNKNOWN: 3166 case Display.STATE_OFF: 3167 case Display.STATE_DOZE: 3168 case Display.STATE_DOZE_SUSPEND: 3169 case Display.STATE_ON: 3170 break; 3171 default: 3172 screenState = Display.STATE_UNKNOWN; 3173 break; 3174 } 3175 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3176 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3177 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3178 } 3179 setDozeOverrideFromDreamManagerInternal(screenState, screenBrightness); 3180 } 3181 3182 @Override 3183 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 3184 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 3185 } 3186 3187 @Override 3188 public boolean getLowPowerModeEnabled() { 3189 synchronized (mLock) { 3190 return mLowPowerModeEnabled; 3191 } 3192 } 3193 3194 @Override 3195 public void registerLowPowerModeObserver(LowPowerModeListener listener) { 3196 synchronized (mLock) { 3197 mLowPowerModeListeners.add(listener); 3198 } 3199 } 3200 } 3201} 3202