PowerManagerService.java revision a191aa99ab67d05bc72e5e20f854bbdd1ea474c1
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.power; 18 19import com.android.internal.app.IAppOpsService; 20import com.android.internal.app.IBatteryStats; 21import com.android.internal.os.BackgroundThread; 22import com.android.server.EventLogTags; 23import com.android.server.ServiceThread; 24import com.android.server.SystemService; 25import com.android.server.am.BatteryStatsService; 26import com.android.server.lights.Light; 27import com.android.server.lights.LightsManager; 28import com.android.server.Watchdog; 29 30import android.Manifest; 31import android.content.BroadcastReceiver; 32import android.content.ContentResolver; 33import android.content.Context; 34import android.content.Intent; 35import android.content.IntentFilter; 36import android.content.pm.PackageManager; 37import android.content.res.Resources; 38import android.database.ContentObserver; 39import android.hardware.SensorManager; 40import android.hardware.SystemSensorManager; 41import android.hardware.display.DisplayManagerInternal; 42import android.hardware.display.DisplayManagerInternal.DisplayPowerRequest; 43import android.net.Uri; 44import android.os.BatteryManager; 45import android.os.BatteryManagerInternal; 46import android.os.Binder; 47import android.os.Handler; 48import android.os.IBinder; 49import android.os.IPowerManager; 50import android.os.Looper; 51import android.os.Message; 52import android.os.PowerManager; 53import android.os.PowerManagerInternal; 54import android.os.Process; 55import android.os.RemoteException; 56import android.os.SystemClock; 57import android.os.SystemProperties; 58import android.os.Trace; 59import android.os.UserHandle; 60import android.os.WorkSource; 61import android.provider.Settings; 62import android.service.dreams.DreamManagerInternal; 63import android.util.EventLog; 64import android.util.Log; 65import android.util.Slog; 66import android.util.TimeUtils; 67import android.view.Display; 68import android.view.WindowManagerPolicy; 69 70import java.io.FileDescriptor; 71import java.io.PrintWriter; 72import java.util.ArrayList; 73 74import libcore.util.Objects; 75 76/** 77 * The power manager service is responsible for coordinating power management 78 * functions on the device. 79 */ 80public final class PowerManagerService extends SystemService 81 implements Watchdog.Monitor { 82 private static final String TAG = "PowerManagerService"; 83 84 private static final boolean DEBUG = false; 85 private static final boolean DEBUG_SPEW = DEBUG && true; 86 87 // Message: Sent when a user activity timeout occurs to update the power state. 88 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 89 // Message: Sent when the device enters or exits a dreaming or dozing state. 90 private static final int MSG_SANDMAN = 2; 91 // Message: Sent when the screen brightness boost expires. 92 private static final int MSG_SCREEN_BRIGHTNESS_BOOST_TIMEOUT = 3; 93 94 // Dirty bit: mWakeLocks changed 95 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 96 // Dirty bit: mWakefulness changed 97 private static final int DIRTY_WAKEFULNESS = 1 << 1; 98 // Dirty bit: user activity was poked or may have timed out 99 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 100 // Dirty bit: actual display power state was updated asynchronously 101 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 102 // Dirty bit: mBootCompleted changed 103 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 104 // Dirty bit: settings changed 105 private static final int DIRTY_SETTINGS = 1 << 5; 106 // Dirty bit: mIsPowered changed 107 private static final int DIRTY_IS_POWERED = 1 << 6; 108 // Dirty bit: mStayOn changed 109 private static final int DIRTY_STAY_ON = 1 << 7; 110 // Dirty bit: battery state changed 111 private static final int DIRTY_BATTERY_STATE = 1 << 8; 112 // Dirty bit: proximity state changed 113 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 114 // Dirty bit: dock state changed 115 private static final int DIRTY_DOCK_STATE = 1 << 10; 116 // Dirty bit: brightness boost changed 117 private static final int DIRTY_SCREEN_BRIGHTNESS_BOOST = 1 << 11; 118 119 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 120 // The screen should be off or in the process of being turned off by the display controller. 121 // The device typically passes through the dozing state first. 122 private static final int WAKEFULNESS_ASLEEP = 0; 123 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 124 // When the user activity timeout expires, the device may start dreaming or go to sleep. 125 private static final int WAKEFULNESS_AWAKE = 1; 126 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 127 // which ends the dream. The device goes to sleep when goToSleep() is called, when 128 // the dream ends or when unplugged. 129 // User activity may brighten the screen but does not end the dream. 130 private static final int WAKEFULNESS_DREAMING = 2; 131 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 132 // low-power "doze" dream to run which keeps the display on but lets the application 133 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 134 // The device fully goes to sleep if the dream cannot be started or ends on its own. 135 private static final int WAKEFULNESS_DOZING = 3; 136 137 // Summarizes the state of all active wakelocks. 138 private static final int WAKE_LOCK_CPU = 1 << 0; 139 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 140 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 141 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 142 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 143 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 144 private static final int WAKE_LOCK_DOZE = 1 << 6; 145 146 // Summarizes the user activity state. 147 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 148 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 149 private static final int USER_ACTIVITY_SCREEN_DREAM = 1 << 2; 150 151 // Default timeout in milliseconds. This is only used until the settings 152 // provider populates the actual default value (R.integer.def_screen_off_timeout). 153 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 154 private static final int DEFAULT_SLEEP_TIMEOUT = -1; 155 156 // Screen brightness boost timeout. 157 // Hardcoded for now until we decide what the right policy should be. 158 // This should perhaps be a setting. 159 private static final int SCREEN_BRIGHTNESS_BOOST_TIMEOUT = 5 * 1000; 160 161 // Power hints defined in hardware/libhardware/include/hardware/power.h. 162 private static final int POWER_HINT_INTERACTION = 2; 163 private static final int POWER_HINT_LOW_POWER = 5; 164 165 private final Context mContext; 166 private final ServiceThread mHandlerThread; 167 private final PowerManagerHandler mHandler; 168 169 private LightsManager mLightsManager; 170 private BatteryManagerInternal mBatteryManagerInternal; 171 private DisplayManagerInternal mDisplayManagerInternal; 172 private IBatteryStats mBatteryStats; 173 private IAppOpsService mAppOps; 174 private WindowManagerPolicy mPolicy; 175 private Notifier mNotifier; 176 private WirelessChargerDetector mWirelessChargerDetector; 177 private SettingsObserver mSettingsObserver; 178 private DreamManagerInternal mDreamManager; 179 private Light mAttentionLight; 180 181 private final Object mLock = new Object(); 182 183 // A bitfield that indicates what parts of the power state have 184 // changed and need to be recalculated. 185 private int mDirty; 186 187 // Indicates whether the device is awake or asleep or somewhere in between. 188 // This is distinct from the screen power state, which is managed separately. 189 private int mWakefulness; 190 191 // True if the sandman has just been summoned for the first time since entering the 192 // dreaming or dozing state. Indicates whether a new dream should begin. 193 private boolean mSandmanSummoned; 194 195 // True if MSG_SANDMAN has been scheduled. 196 private boolean mSandmanScheduled; 197 198 // Table of all suspend blockers. 199 // There should only be a few of these. 200 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 201 202 // Table of all wake locks acquired by applications. 203 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 204 205 // A bitfield that summarizes the state of all active wakelocks. 206 private int mWakeLockSummary; 207 208 // True if the device is in an interactive state. 209 private boolean mInteractive; 210 private boolean mInteractiveChanging; 211 212 // If true, instructs the display controller to wait for the proximity sensor to 213 // go negative before turning the screen on. 214 private boolean mRequestWaitForNegativeProximity; 215 216 // Timestamp of the last time the device was awoken or put to sleep. 217 private long mLastWakeTime; 218 private long mLastSleepTime; 219 220 // Timestamp of the last call to user activity. 221 private long mLastUserActivityTime; 222 private long mLastUserActivityTimeNoChangeLights; 223 224 // Timestamp of last interactive power hint. 225 private long mLastInteractivePowerHintTime; 226 227 // Timestamp of the last screen brightness boost. 228 private long mLastScreenBrightnessBoostTime; 229 private boolean mScreenBrightnessBoostInProgress; 230 231 // A bitfield that summarizes the effect of the user activity timer. 232 private int mUserActivitySummary; 233 234 // The desired display power state. The actual state may lag behind the 235 // requested because it is updated asynchronously by the display power controller. 236 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 237 238 // True if the display power state has been fully applied, which means the display 239 // is actually on or actually off or whatever was requested. 240 private boolean mDisplayReady; 241 242 // The suspend blocker used to keep the CPU alive when an application has acquired 243 // a wake lock. 244 private final SuspendBlocker mWakeLockSuspendBlocker; 245 246 // True if the wake lock suspend blocker has been acquired. 247 private boolean mHoldingWakeLockSuspendBlocker; 248 249 // The suspend blocker used to keep the CPU alive when the display is on, the 250 // display is getting ready or there is user activity (in which case the display 251 // must be on). 252 private final SuspendBlocker mDisplaySuspendBlocker; 253 254 // True if the display suspend blocker has been acquired. 255 private boolean mHoldingDisplaySuspendBlocker; 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 wake up when plugged or unplugged in theater mode. 298 private boolean mWakeUpWhenPluggedOrUnpluggedInTheaterModeConfig; 299 300 // True if the device should suspend when the screen is off due to proximity. 301 private boolean mSuspendWhenScreenOffDueToProximityConfig; 302 303 // True if dreams are supported on this device. 304 private boolean mDreamsSupportedConfig; 305 306 // Default value for dreams enabled 307 private boolean mDreamsEnabledByDefaultConfig; 308 309 // Default value for dreams activate-on-sleep 310 private boolean mDreamsActivatedOnSleepByDefaultConfig; 311 312 // Default value for dreams activate-on-dock 313 private boolean mDreamsActivatedOnDockByDefaultConfig; 314 315 // True if dreams can run while not plugged in. 316 private boolean mDreamsEnabledOnBatteryConfig; 317 318 // Minimum battery level to allow dreaming when powered. 319 // Use -1 to disable this safety feature. 320 private int mDreamsBatteryLevelMinimumWhenPoweredConfig; 321 322 // Minimum battery level to allow dreaming when not powered. 323 // Use -1 to disable this safety feature. 324 private int mDreamsBatteryLevelMinimumWhenNotPoweredConfig; 325 326 // If the battery level drops by this percentage and the user activity timeout 327 // has expired, then assume the device is receiving insufficient current to charge 328 // effectively and terminate the dream. Use -1 to disable this safety feature. 329 private int mDreamsBatteryLevelDrainCutoffConfig; 330 331 // True if dreams are enabled by the user. 332 private boolean mDreamsEnabledSetting; 333 334 // True if dreams should be activated on sleep. 335 private boolean mDreamsActivateOnSleepSetting; 336 337 // True if dreams should be activated on dock. 338 private boolean mDreamsActivateOnDockSetting; 339 340 // True if doze should not be started until after the screen off transition. 341 private boolean mDozeAfterScreenOffConfig; 342 343 // The minimum screen off timeout, in milliseconds. 344 private int mMinimumScreenOffTimeoutConfig; 345 346 // The screen dim duration, in milliseconds. 347 // This is subtracted from the end of the screen off timeout so the 348 // minimum screen off timeout should be longer than this. 349 private int mMaximumScreenDimDurationConfig; 350 351 // The maximum screen dim time expressed as a ratio relative to the screen 352 // off timeout. If the screen off timeout is very short then we want the 353 // dim timeout to also be quite short so that most of the time is spent on. 354 // Otherwise the user won't get much screen on time before dimming occurs. 355 private float mMaximumScreenDimRatioConfig; 356 357 // The screen off timeout setting value in milliseconds. 358 private int mScreenOffTimeoutSetting; 359 360 // The sleep timeout setting value in milliseconds. 361 private int mSleepTimeoutSetting; 362 363 // The maximum allowable screen off timeout according to the device 364 // administration policy. Overrides other settings. 365 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 366 367 // The stay on while plugged in setting. 368 // A bitfield of battery conditions under which to make the screen stay on. 369 private int mStayOnWhilePluggedInSetting; 370 371 // True if the device should stay on. 372 private boolean mStayOn; 373 374 // True if the proximity sensor reads a positive result. 375 private boolean mProximityPositive; 376 377 // Screen brightness setting limits. 378 private int mScreenBrightnessSettingMinimum; 379 private int mScreenBrightnessSettingMaximum; 380 private int mScreenBrightnessSettingDefault; 381 382 // The screen brightness setting, from 0 to 255. 383 // Use -1 if no value has been set. 384 private int mScreenBrightnessSetting; 385 386 // The screen auto-brightness adjustment setting, from -1 to 1. 387 // Use 0 if there is no adjustment. 388 private float mScreenAutoBrightnessAdjustmentSetting; 389 390 // The screen brightness mode. 391 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 392 private int mScreenBrightnessModeSetting; 393 394 // The screen brightness setting override from the window manager 395 // to allow the current foreground activity to override the brightness. 396 // Use -1 to disable. 397 private int mScreenBrightnessOverrideFromWindowManager = -1; 398 399 // The user activity timeout override from the window manager 400 // to allow the current foreground activity to override the user activity timeout. 401 // Use -1 to disable. 402 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 403 404 // The screen brightness setting override from the settings application 405 // to temporarily adjust the brightness until next updated, 406 // Use -1 to disable. 407 private int mTemporaryScreenBrightnessSettingOverride = -1; 408 409 // The screen brightness adjustment setting override from the settings 410 // application to temporarily adjust the auto-brightness adjustment factor 411 // until next updated, in the range -1..1. 412 // Use NaN to disable. 413 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 414 415 // The screen state to use while dozing. 416 private int mDozeScreenStateOverrideFromDreamManager = Display.STATE_UNKNOWN; 417 418 // The screen brightness to use while dozing. 419 private int mDozeScreenBrightnessOverrideFromDreamManager = PowerManager.BRIGHTNESS_DEFAULT; 420 421 // Time when we last logged a warning about calling userActivity() without permission. 422 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 423 424 // If true, the device is in low power mode. 425 private boolean mLowPowerModeEnabled; 426 427 // Current state of the low power mode setting. 428 private boolean mLowPowerModeSetting; 429 430 // Current state of whether the settings are allowing auto low power mode. 431 private boolean mAutoLowPowerModeConfigured; 432 433 // The user turned off low power mode below the trigger level 434 private boolean mAutoLowPowerModeSnoozing; 435 436 // True if the battery level is currently considered low. 437 private boolean mBatteryLevelLow; 438 439 // True if theater mode is enabled 440 private boolean mTheaterModeEnabled; 441 442 private final ArrayList<PowerManagerInternal.LowPowerModeListener> mLowPowerModeListeners 443 = new ArrayList<PowerManagerInternal.LowPowerModeListener>(); 444 445 private native void nativeInit(); 446 447 private static native void nativeAcquireSuspendBlocker(String name); 448 private static native void nativeReleaseSuspendBlocker(String name); 449 private static native void nativeSetInteractive(boolean enable); 450 private static native void nativeSetAutoSuspend(boolean enable); 451 private static native void nativeSendPowerHint(int hintId, int data); 452 453 public PowerManagerService(Context context) { 454 super(context); 455 mContext = context; 456 mHandlerThread = new ServiceThread(TAG, 457 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 458 mHandlerThread.start(); 459 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 460 461 synchronized (mLock) { 462 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 463 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 464 mDisplaySuspendBlocker.acquire(); 465 mHoldingDisplaySuspendBlocker = true; 466 mHalAutoSuspendModeEnabled = false; 467 mHalInteractiveModeEnabled = true; 468 469 mWakefulness = WAKEFULNESS_AWAKE; 470 mInteractive = true; 471 472 nativeInit(); 473 nativeSetAutoSuspend(false); 474 nativeSetInteractive(true); 475 } 476 } 477 478 @Override 479 public void onStart() { 480 publishBinderService(Context.POWER_SERVICE, new BinderService()); 481 publishLocalService(PowerManagerInternal.class, new LocalService()); 482 483 Watchdog.getInstance().addMonitor(this); 484 Watchdog.getInstance().addThread(mHandler); 485 } 486 487 @Override 488 public void onBootPhase(int phase) { 489 synchronized (mLock) { 490 if (phase == PHASE_BOOT_COMPLETED) { 491 final long now = SystemClock.uptimeMillis(); 492 mBootCompleted = true; 493 mDirty |= DIRTY_BOOT_COMPLETED; 494 userActivityNoUpdateLocked( 495 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 496 updatePowerStateLocked(); 497 } 498 } 499 } 500 501 public void systemReady(IAppOpsService appOps) { 502 synchronized (mLock) { 503 mSystemReady = true; 504 mAppOps = appOps; 505 mDreamManager = getLocalService(DreamManagerInternal.class); 506 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 507 mPolicy = getLocalService(WindowManagerPolicy.class); 508 mBatteryManagerInternal = getLocalService(BatteryManagerInternal.class); 509 510 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 511 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 512 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 513 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 514 515 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 516 517 // The notifier runs on the system server's main looper so as not to interfere 518 // with the animations and other critical functions of the power manager. 519 mBatteryStats = BatteryStatsService.getService(); 520 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 521 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 522 mPolicy); 523 524 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 525 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 526 mHandler); 527 mSettingsObserver = new SettingsObserver(mHandler); 528 529 mLightsManager = getLocalService(LightsManager.class); 530 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 531 532 // Initialize display power management. 533 mDisplayManagerInternal.initPowerManagement( 534 mDisplayPowerCallbacks, mHandler, sensorManager); 535 536 // Register for broadcasts from other components of the system. 537 IntentFilter filter = new IntentFilter(); 538 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 539 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 540 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 541 542 filter = new IntentFilter(); 543 filter.addAction(Intent.ACTION_DREAMING_STARTED); 544 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 545 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 546 547 filter = new IntentFilter(); 548 filter.addAction(Intent.ACTION_USER_SWITCHED); 549 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 550 551 filter = new IntentFilter(); 552 filter.addAction(Intent.ACTION_DOCK_EVENT); 553 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 554 555 // Register for settings changes. 556 final ContentResolver resolver = mContext.getContentResolver(); 557 resolver.registerContentObserver(Settings.Secure.getUriFor( 558 Settings.Secure.SCREENSAVER_ENABLED), 559 false, mSettingsObserver, UserHandle.USER_ALL); 560 resolver.registerContentObserver(Settings.Secure.getUriFor( 561 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 562 false, mSettingsObserver, UserHandle.USER_ALL); 563 resolver.registerContentObserver(Settings.Secure.getUriFor( 564 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 565 false, mSettingsObserver, UserHandle.USER_ALL); 566 resolver.registerContentObserver(Settings.System.getUriFor( 567 Settings.System.SCREEN_OFF_TIMEOUT), 568 false, mSettingsObserver, UserHandle.USER_ALL); 569 resolver.registerContentObserver(Settings.Secure.getUriFor( 570 Settings.Secure.SLEEP_TIMEOUT), 571 false, mSettingsObserver, UserHandle.USER_ALL); 572 resolver.registerContentObserver(Settings.Global.getUriFor( 573 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 574 false, mSettingsObserver, UserHandle.USER_ALL); 575 resolver.registerContentObserver(Settings.System.getUriFor( 576 Settings.System.SCREEN_BRIGHTNESS), 577 false, mSettingsObserver, UserHandle.USER_ALL); 578 resolver.registerContentObserver(Settings.System.getUriFor( 579 Settings.System.SCREEN_BRIGHTNESS_MODE), 580 false, mSettingsObserver, UserHandle.USER_ALL); 581 resolver.registerContentObserver(Settings.System.getUriFor( 582 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ), 583 false, mSettingsObserver, UserHandle.USER_ALL); 584 resolver.registerContentObserver(Settings.Global.getUriFor( 585 Settings.Global.LOW_POWER_MODE), 586 false, mSettingsObserver, UserHandle.USER_ALL); 587 resolver.registerContentObserver(Settings.Global.getUriFor( 588 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL), 589 false, mSettingsObserver, UserHandle.USER_ALL); 590 resolver.registerContentObserver(Settings.Global.getUriFor( 591 Settings.Global.THEATER_MODE_ON), 592 false, mSettingsObserver, UserHandle.USER_ALL); 593 // Go. 594 readConfigurationLocked(); 595 updateSettingsLocked(); 596 mDirty |= DIRTY_BATTERY_STATE; 597 updatePowerStateLocked(); 598 } 599 } 600 601 private void readConfigurationLocked() { 602 final Resources resources = mContext.getResources(); 603 604 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 605 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 606 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 607 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 608 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 609 com.android.internal.R.bool.config_unplugTurnsOnScreen); 610 mWakeUpWhenPluggedOrUnpluggedInTheaterModeConfig = resources.getBoolean( 611 com.android.internal.R.bool.config_allowTheaterModeWakeFromUnplug); 612 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 613 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 614 mDreamsSupportedConfig = resources.getBoolean( 615 com.android.internal.R.bool.config_dreamsSupported); 616 mDreamsEnabledByDefaultConfig = resources.getBoolean( 617 com.android.internal.R.bool.config_dreamsEnabledByDefault); 618 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 619 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 620 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 621 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 622 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 623 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 624 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 625 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 626 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 627 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 628 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 629 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 630 mDozeAfterScreenOffConfig = resources.getBoolean( 631 com.android.internal.R.bool.config_dozeAfterScreenOff); 632 mMinimumScreenOffTimeoutConfig = resources.getInteger( 633 com.android.internal.R.integer.config_minimumScreenOffTimeout); 634 mMaximumScreenDimDurationConfig = resources.getInteger( 635 com.android.internal.R.integer.config_maximumScreenDimDuration); 636 mMaximumScreenDimRatioConfig = resources.getFraction( 637 com.android.internal.R.fraction.config_maximumScreenDimRatio, 1, 1); 638 } 639 640 private void updateSettingsLocked() { 641 final ContentResolver resolver = mContext.getContentResolver(); 642 643 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 644 Settings.Secure.SCREENSAVER_ENABLED, 645 mDreamsEnabledByDefaultConfig ? 1 : 0, 646 UserHandle.USER_CURRENT) != 0); 647 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 648 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 649 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 650 UserHandle.USER_CURRENT) != 0); 651 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 652 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 653 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 654 UserHandle.USER_CURRENT) != 0); 655 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 656 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 657 UserHandle.USER_CURRENT); 658 mSleepTimeoutSetting = Settings.Secure.getIntForUser(resolver, 659 Settings.Secure.SLEEP_TIMEOUT, DEFAULT_SLEEP_TIMEOUT, 660 UserHandle.USER_CURRENT); 661 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 662 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 663 mTheaterModeEnabled = Settings.Global.getInt(mContext.getContentResolver(), 664 Settings.Global.THEATER_MODE_ON, 0) == 1; 665 666 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 667 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 668 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 669 UserHandle.USER_CURRENT); 670 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 671 mTemporaryScreenBrightnessSettingOverride = -1; 672 } 673 674 final float oldScreenAutoBrightnessAdjustmentSetting = 675 mScreenAutoBrightnessAdjustmentSetting; 676 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 677 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 678 UserHandle.USER_CURRENT); 679 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 680 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 681 } 682 683 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 684 Settings.System.SCREEN_BRIGHTNESS_MODE, 685 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 686 687 final boolean lowPowerModeEnabled = Settings.Global.getInt(resolver, 688 Settings.Global.LOW_POWER_MODE, 0) != 0; 689 final boolean autoLowPowerModeConfigured = Settings.Global.getInt(resolver, 690 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL, 0) != 0; 691 if (lowPowerModeEnabled != mLowPowerModeSetting 692 || autoLowPowerModeConfigured != mAutoLowPowerModeConfigured) { 693 mLowPowerModeSetting = lowPowerModeEnabled; 694 mAutoLowPowerModeConfigured = autoLowPowerModeConfigured; 695 updateLowPowerModeLocked(); 696 } 697 698 mDirty |= DIRTY_SETTINGS; 699 } 700 701 void updateLowPowerModeLocked() { 702 if (mIsPowered && mLowPowerModeSetting) { 703 if (DEBUG_SPEW) { 704 Slog.d(TAG, "updateLowPowerModeLocked: powered, turning setting off"); 705 } 706 // Turn setting off if powered 707 Settings.Global.putInt(mContext.getContentResolver(), 708 Settings.Global.LOW_POWER_MODE, 0); 709 mLowPowerModeSetting = false; 710 } 711 final boolean autoLowPowerModeEnabled = !mIsPowered && mAutoLowPowerModeConfigured 712 && !mAutoLowPowerModeSnoozing && mBatteryLevelLow; 713 final boolean lowPowerModeEnabled = mLowPowerModeSetting || autoLowPowerModeEnabled; 714 715 if (mLowPowerModeEnabled != lowPowerModeEnabled) { 716 mLowPowerModeEnabled = lowPowerModeEnabled; 717 powerHintInternal(POWER_HINT_LOW_POWER, lowPowerModeEnabled ? 1 : 0); 718 BackgroundThread.getHandler().post(new Runnable() { 719 @Override 720 public void run() { 721 Intent intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGING) 722 .putExtra(PowerManager.EXTRA_POWER_SAVE_MODE, mLowPowerModeEnabled) 723 .addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 724 mContext.sendBroadcast(intent); 725 ArrayList<PowerManagerInternal.LowPowerModeListener> listeners; 726 synchronized (mLock) { 727 listeners = new ArrayList<PowerManagerInternal.LowPowerModeListener>( 728 mLowPowerModeListeners); 729 } 730 for (int i=0; i<listeners.size(); i++) { 731 listeners.get(i).onLowPowerModeChanged(lowPowerModeEnabled); 732 } 733 intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED); 734 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 735 mContext.sendBroadcast(intent); 736 } 737 }); 738 } 739 } 740 741 private void handleSettingsChangedLocked() { 742 updateSettingsLocked(); 743 updatePowerStateLocked(); 744 } 745 746 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 747 WorkSource ws, String historyTag, int uid, int pid) { 748 synchronized (mLock) { 749 if (DEBUG_SPEW) { 750 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 751 + ", flags=0x" + Integer.toHexString(flags) 752 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 753 } 754 755 WakeLock wakeLock; 756 int index = findWakeLockIndexLocked(lock); 757 boolean notifyAcquire; 758 if (index >= 0) { 759 wakeLock = mWakeLocks.get(index); 760 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 761 // Update existing wake lock. This shouldn't happen but is harmless. 762 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 763 uid, pid, ws, historyTag); 764 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 765 } 766 notifyAcquire = false; 767 } else { 768 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 769 try { 770 lock.linkToDeath(wakeLock, 0); 771 } catch (RemoteException ex) { 772 throw new IllegalArgumentException("Wake lock is already dead."); 773 } 774 mWakeLocks.add(wakeLock); 775 notifyAcquire = true; 776 } 777 778 applyWakeLockFlagsOnAcquireLocked(wakeLock, uid); 779 mDirty |= DIRTY_WAKE_LOCKS; 780 updatePowerStateLocked(); 781 if (notifyAcquire) { 782 // This needs to be done last so we are sure we have acquired the 783 // kernel wake lock. Otherwise we have a race where the system may 784 // go to sleep between the time we start the accounting in battery 785 // stats and when we actually get around to telling the kernel to 786 // stay awake. 787 notifyWakeLockAcquiredLocked(wakeLock); 788 } 789 } 790 } 791 792 @SuppressWarnings("deprecation") 793 private static boolean isScreenLock(final WakeLock wakeLock) { 794 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 795 case PowerManager.FULL_WAKE_LOCK: 796 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 797 case PowerManager.SCREEN_DIM_WAKE_LOCK: 798 return true; 799 } 800 return false; 801 } 802 803 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock, int uid) { 804 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 805 && isScreenLock(wakeLock)) { 806 wakeUpNoUpdateLocked(SystemClock.uptimeMillis(), uid); 807 } 808 } 809 810 private void releaseWakeLockInternal(IBinder lock, int flags) { 811 synchronized (mLock) { 812 int index = findWakeLockIndexLocked(lock); 813 if (index < 0) { 814 if (DEBUG_SPEW) { 815 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 816 + " [not found], flags=0x" + Integer.toHexString(flags)); 817 } 818 return; 819 } 820 821 WakeLock wakeLock = mWakeLocks.get(index); 822 if (DEBUG_SPEW) { 823 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 824 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 825 } 826 827 if ((flags & PowerManager.RELEASE_FLAG_WAIT_FOR_NO_PROXIMITY) != 0) { 828 mRequestWaitForNegativeProximity = true; 829 } 830 831 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 832 removeWakeLockLocked(wakeLock, index); 833 } 834 } 835 836 private void handleWakeLockDeath(WakeLock wakeLock) { 837 synchronized (mLock) { 838 if (DEBUG_SPEW) { 839 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 840 + " [" + wakeLock.mTag + "]"); 841 } 842 843 int index = mWakeLocks.indexOf(wakeLock); 844 if (index < 0) { 845 return; 846 } 847 848 removeWakeLockLocked(wakeLock, index); 849 } 850 } 851 852 private void removeWakeLockLocked(WakeLock wakeLock, int index) { 853 mWakeLocks.remove(index); 854 notifyWakeLockReleasedLocked(wakeLock); 855 856 applyWakeLockFlagsOnReleaseLocked(wakeLock); 857 mDirty |= DIRTY_WAKE_LOCKS; 858 updatePowerStateLocked(); 859 } 860 861 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 862 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 863 && isScreenLock(wakeLock)) { 864 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 865 PowerManager.USER_ACTIVITY_EVENT_OTHER, 866 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 867 wakeLock.mOwnerUid); 868 } 869 } 870 871 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag, 872 int callingUid) { 873 synchronized (mLock) { 874 int index = findWakeLockIndexLocked(lock); 875 if (index < 0) { 876 if (DEBUG_SPEW) { 877 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 878 + " [not found], ws=" + ws); 879 } 880 throw new IllegalArgumentException("Wake lock not active: " + lock 881 + " from uid " + callingUid); 882 } 883 884 WakeLock wakeLock = mWakeLocks.get(index); 885 if (DEBUG_SPEW) { 886 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 887 + " [" + wakeLock.mTag + "], ws=" + ws); 888 } 889 890 if (!wakeLock.hasSameWorkSource(ws)) { 891 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 892 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 893 ws, historyTag); 894 wakeLock.mHistoryTag = historyTag; 895 wakeLock.updateWorkSource(ws); 896 } 897 } 898 } 899 900 private int findWakeLockIndexLocked(IBinder lock) { 901 final int count = mWakeLocks.size(); 902 for (int i = 0; i < count; i++) { 903 if (mWakeLocks.get(i).mLock == lock) { 904 return i; 905 } 906 } 907 return -1; 908 } 909 910 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 911 if (mSystemReady) { 912 wakeLock.mNotifiedAcquired = true; 913 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 914 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 915 wakeLock.mHistoryTag); 916 } 917 } 918 919 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 920 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 921 if (mSystemReady && wakeLock.mNotifiedAcquired) { 922 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 923 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 924 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 925 } 926 } 927 928 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 929 if (mSystemReady && wakeLock.mNotifiedAcquired) { 930 wakeLock.mNotifiedAcquired = false; 931 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, 932 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 933 wakeLock.mWorkSource, wakeLock.mHistoryTag); 934 } 935 } 936 937 @SuppressWarnings("deprecation") 938 private boolean isWakeLockLevelSupportedInternal(int level) { 939 synchronized (mLock) { 940 switch (level) { 941 case PowerManager.PARTIAL_WAKE_LOCK: 942 case PowerManager.SCREEN_DIM_WAKE_LOCK: 943 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 944 case PowerManager.FULL_WAKE_LOCK: 945 case PowerManager.DOZE_WAKE_LOCK: 946 return true; 947 948 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 949 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 950 951 default: 952 return false; 953 } 954 } 955 } 956 957 // Called from native code. 958 private void userActivityFromNative(long eventTime, int event, int flags) { 959 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 960 } 961 962 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 963 synchronized (mLock) { 964 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 965 updatePowerStateLocked(); 966 } 967 } 968 } 969 970 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 971 if (DEBUG_SPEW) { 972 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 973 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 974 + ", uid=" + uid); 975 } 976 977 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 978 || !mBootCompleted || !mSystemReady) { 979 return false; 980 } 981 982 Trace.traceBegin(Trace.TRACE_TAG_POWER, "userActivity"); 983 try { 984 if (eventTime > mLastInteractivePowerHintTime) { 985 powerHintInternal(POWER_HINT_INTERACTION, 0); 986 mLastInteractivePowerHintTime = eventTime; 987 } 988 989 mNotifier.onUserActivity(event, uid); 990 991 if (mWakefulness == WAKEFULNESS_ASLEEP 992 || mWakefulness == WAKEFULNESS_DOZING 993 || (flags & PowerManager.USER_ACTIVITY_FLAG_INDIRECT) != 0) { 994 return false; 995 } 996 997 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 998 if (eventTime > mLastUserActivityTimeNoChangeLights 999 && eventTime > mLastUserActivityTime) { 1000 mLastUserActivityTimeNoChangeLights = eventTime; 1001 mDirty |= DIRTY_USER_ACTIVITY; 1002 return true; 1003 } 1004 } else { 1005 if (eventTime > mLastUserActivityTime) { 1006 mLastUserActivityTime = eventTime; 1007 mDirty |= DIRTY_USER_ACTIVITY; 1008 return true; 1009 } 1010 } 1011 } finally { 1012 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1013 } 1014 return false; 1015 } 1016 1017 private void wakeUpInternal(long eventTime, int uid) { 1018 synchronized (mLock) { 1019 if (wakeUpNoUpdateLocked(eventTime, uid)) { 1020 updatePowerStateLocked(); 1021 } 1022 } 1023 } 1024 1025 private boolean wakeUpNoUpdateLocked(long eventTime, int uid) { 1026 if (DEBUG_SPEW) { 1027 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime + ", uid=" + uid); 1028 } 1029 1030 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 1031 || !mBootCompleted || !mSystemReady) { 1032 return false; 1033 } 1034 1035 Trace.traceBegin(Trace.TRACE_TAG_POWER, "wakeUp"); 1036 try { 1037 switch (mWakefulness) { 1038 case WAKEFULNESS_ASLEEP: 1039 Slog.i(TAG, "Waking up from sleep (uid " + uid +")..."); 1040 break; 1041 case WAKEFULNESS_DREAMING: 1042 Slog.i(TAG, "Waking up from dream (uid " + uid +")..."); 1043 break; 1044 case WAKEFULNESS_DOZING: 1045 Slog.i(TAG, "Waking up from dozing (uid " + uid +")..."); 1046 break; 1047 } 1048 1049 mLastWakeTime = eventTime; 1050 mDirty |= DIRTY_WAKEFULNESS; 1051 mWakefulness = WAKEFULNESS_AWAKE; 1052 setInteractiveStateLocked(true, 0); 1053 1054 userActivityNoUpdateLocked( 1055 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, uid); 1056 } finally { 1057 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1058 } 1059 return true; 1060 } 1061 1062 private void goToSleepInternal(long eventTime, int reason, int flags, int uid) { 1063 synchronized (mLock) { 1064 if (goToSleepNoUpdateLocked(eventTime, reason, flags, uid)) { 1065 updatePowerStateLocked(); 1066 } 1067 } 1068 } 1069 1070 // This method is called goToSleep for historical reasons but we actually start 1071 // dozing before really going to sleep. 1072 @SuppressWarnings("deprecation") 1073 private boolean goToSleepNoUpdateLocked(long eventTime, int reason, int flags, int uid) { 1074 if (DEBUG_SPEW) { 1075 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime 1076 + ", reason=" + reason + ", flags=" + flags + ", uid=" + uid); 1077 } 1078 1079 if (eventTime < mLastWakeTime 1080 || mWakefulness == WAKEFULNESS_ASLEEP 1081 || mWakefulness == WAKEFULNESS_DOZING 1082 || !mBootCompleted || !mSystemReady) { 1083 return false; 1084 } 1085 1086 Trace.traceBegin(Trace.TRACE_TAG_POWER, "goToSleep"); 1087 try { 1088 switch (reason) { 1089 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 1090 Slog.i(TAG, "Going to sleep due to device administration policy " 1091 + "(uid " + uid +")..."); 1092 break; 1093 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 1094 Slog.i(TAG, "Going to sleep due to screen timeout (uid " + uid +")..."); 1095 break; 1096 case PowerManager.GO_TO_SLEEP_REASON_LID_SWITCH: 1097 Slog.i(TAG, "Going to sleep due to lid switch (uid " + uid +")..."); 1098 break; 1099 case PowerManager.GO_TO_SLEEP_REASON_POWER_BUTTON: 1100 Slog.i(TAG, "Going to sleep due to power button (uid " + uid +")..."); 1101 break; 1102 case PowerManager.GO_TO_SLEEP_REASON_HDMI: 1103 Slog.i(TAG, "Going to sleep due to HDMI standby (uid " + uid +")..."); 1104 break; 1105 default: 1106 Slog.i(TAG, "Going to sleep by application request (uid " + uid +")..."); 1107 reason = PowerManager.GO_TO_SLEEP_REASON_APPLICATION; 1108 break; 1109 } 1110 1111 mLastSleepTime = eventTime; 1112 mDirty |= DIRTY_WAKEFULNESS; 1113 mWakefulness = WAKEFULNESS_DOZING; 1114 mSandmanSummoned = true; 1115 setInteractiveStateLocked(false, reason); 1116 1117 // Report the number of wake locks that will be cleared by going to sleep. 1118 int numWakeLocksCleared = 0; 1119 final int numWakeLocks = mWakeLocks.size(); 1120 for (int i = 0; i < numWakeLocks; i++) { 1121 final WakeLock wakeLock = mWakeLocks.get(i); 1122 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1123 case PowerManager.FULL_WAKE_LOCK: 1124 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1125 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1126 numWakeLocksCleared += 1; 1127 break; 1128 } 1129 } 1130 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 1131 1132 // Skip dozing if requested. 1133 if ((flags & PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE) != 0) { 1134 reallyGoToSleepNoUpdateLocked(eventTime, uid); 1135 } 1136 } finally { 1137 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1138 } 1139 return true; 1140 } 1141 1142 private void napInternal(long eventTime, int uid) { 1143 synchronized (mLock) { 1144 if (napNoUpdateLocked(eventTime, uid)) { 1145 updatePowerStateLocked(); 1146 } 1147 } 1148 } 1149 1150 private boolean napNoUpdateLocked(long eventTime, int uid) { 1151 if (DEBUG_SPEW) { 1152 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime + ", uid=" + uid); 1153 } 1154 1155 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1156 || !mBootCompleted || !mSystemReady) { 1157 return false; 1158 } 1159 1160 Trace.traceBegin(Trace.TRACE_TAG_POWER, "nap"); 1161 try { 1162 Slog.i(TAG, "Nap time (uid " + uid +")..."); 1163 1164 mDirty |= DIRTY_WAKEFULNESS; 1165 mWakefulness = WAKEFULNESS_DREAMING; 1166 mSandmanSummoned = true; 1167 setInteractiveStateLocked(true, 0); 1168 } finally { 1169 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1170 } 1171 return true; 1172 } 1173 1174 // Done dozing, drop everything and go to sleep. 1175 private boolean reallyGoToSleepNoUpdateLocked(long eventTime, int uid) { 1176 if (DEBUG_SPEW) { 1177 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime 1178 + ", uid=" + uid); 1179 } 1180 1181 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1182 || !mBootCompleted || !mSystemReady) { 1183 return false; 1184 } 1185 1186 Trace.traceBegin(Trace.TRACE_TAG_POWER, "reallyGoToSleep"); 1187 try { 1188 Slog.i(TAG, "Sleeping (uid " + uid +")..."); 1189 1190 mDirty |= DIRTY_WAKEFULNESS; 1191 mWakefulness = WAKEFULNESS_ASLEEP; 1192 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1193 } finally { 1194 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1195 } 1196 return true; 1197 } 1198 1199 private void setInteractiveStateLocked(boolean interactive, int reason) { 1200 if (mInteractive != interactive) { 1201 finishInteractiveStateChangeLocked(); 1202 1203 mInteractive = interactive; 1204 mInteractiveChanging = true; 1205 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1206 } 1207 } 1208 1209 private void finishInteractiveStateChangeLocked() { 1210 if (mInteractiveChanging) { 1211 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1212 mInteractiveChanging = false; 1213 } 1214 } 1215 1216 /** 1217 * Updates the global power state based on dirty bits recorded in mDirty. 1218 * 1219 * This is the main function that performs power state transitions. 1220 * We centralize them here so that we can recompute the power state completely 1221 * each time something important changes, and ensure that we do it the same 1222 * way each time. The point is to gather all of the transition logic here. 1223 */ 1224 private void updatePowerStateLocked() { 1225 if (!mSystemReady || mDirty == 0) { 1226 return; 1227 } 1228 if (!Thread.holdsLock(mLock)) { 1229 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1230 } 1231 1232 Trace.traceBegin(Trace.TRACE_TAG_POWER, "updatePowerState"); 1233 try { 1234 // Phase 0: Basic state updates. 1235 updateIsPoweredLocked(mDirty); 1236 updateStayOnLocked(mDirty); 1237 updateScreenBrightnessBoostLocked(mDirty); 1238 1239 // Phase 1: Update wakefulness. 1240 // Loop because the wake lock and user activity computations are influenced 1241 // by changes in wakefulness. 1242 final long now = SystemClock.uptimeMillis(); 1243 int dirtyPhase2 = 0; 1244 for (;;) { 1245 int dirtyPhase1 = mDirty; 1246 dirtyPhase2 |= dirtyPhase1; 1247 mDirty = 0; 1248 1249 updateWakeLockSummaryLocked(dirtyPhase1); 1250 updateUserActivitySummaryLocked(now, dirtyPhase1); 1251 if (!updateWakefulnessLocked(dirtyPhase1)) { 1252 break; 1253 } 1254 } 1255 1256 // Phase 2: Update display power state. 1257 boolean displayBecameReady = updateDisplayPowerStateLocked(dirtyPhase2); 1258 1259 // Phase 3: Update dream state (depends on display ready signal). 1260 updateDreamLocked(dirtyPhase2, displayBecameReady); 1261 1262 // Phase 4: Send notifications, if needed. 1263 if (mDisplayReady) { 1264 finishInteractiveStateChangeLocked(); 1265 } 1266 1267 // Phase 5: Update suspend blocker. 1268 // Because we might release the last suspend blocker here, we need to make sure 1269 // we finished everything else first! 1270 updateSuspendBlockerLocked(); 1271 } finally { 1272 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1273 } 1274 } 1275 1276 /** 1277 * Updates the value of mIsPowered. 1278 * Sets DIRTY_IS_POWERED if a change occurred. 1279 */ 1280 private void updateIsPoweredLocked(int dirty) { 1281 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1282 final boolean wasPowered = mIsPowered; 1283 final int oldPlugType = mPlugType; 1284 final boolean oldLevelLow = mBatteryLevelLow; 1285 mIsPowered = mBatteryManagerInternal.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1286 mPlugType = mBatteryManagerInternal.getPlugType(); 1287 mBatteryLevel = mBatteryManagerInternal.getBatteryLevel(); 1288 mBatteryLevelLow = mBatteryManagerInternal.getBatteryLevelLow(); 1289 1290 if (DEBUG_SPEW) { 1291 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1292 + ", mIsPowered=" + mIsPowered 1293 + ", oldPlugType=" + oldPlugType 1294 + ", mPlugType=" + mPlugType 1295 + ", mBatteryLevel=" + mBatteryLevel); 1296 } 1297 1298 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1299 mDirty |= DIRTY_IS_POWERED; 1300 1301 // Update wireless dock detection state. 1302 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1303 mIsPowered, mPlugType, mBatteryLevel); 1304 1305 // Treat plugging and unplugging the devices as a user activity. 1306 // Users find it disconcerting when they plug or unplug the device 1307 // and it shuts off right away. 1308 // Some devices also wake the device when plugged or unplugged because 1309 // they don't have a charging LED. 1310 final long now = SystemClock.uptimeMillis(); 1311 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1312 dockedOnWirelessCharger)) { 1313 wakeUpNoUpdateLocked(now, Process.SYSTEM_UID); 1314 } 1315 userActivityNoUpdateLocked( 1316 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1317 1318 // Tell the notifier whether wireless charging has started so that 1319 // it can provide feedback to the user. 1320 if (dockedOnWirelessCharger) { 1321 mNotifier.onWirelessChargingStarted(); 1322 } 1323 } 1324 1325 if (wasPowered != mIsPowered || oldLevelLow != mBatteryLevelLow) { 1326 if (oldLevelLow != mBatteryLevelLow && !mBatteryLevelLow) { 1327 if (DEBUG_SPEW) { 1328 Slog.d(TAG, "updateIsPoweredLocked: resetting low power snooze"); 1329 } 1330 mAutoLowPowerModeSnoozing = false; 1331 } 1332 updateLowPowerModeLocked(); 1333 } 1334 } 1335 } 1336 1337 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1338 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1339 // Don't wake when powered unless configured to do so. 1340 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1341 return false; 1342 } 1343 1344 // Don't wake when undocked from wireless charger. 1345 // See WirelessChargerDetector for justification. 1346 if (wasPowered && !mIsPowered 1347 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1348 return false; 1349 } 1350 1351 // Don't wake when docked on wireless charger unless we are certain of it. 1352 // See WirelessChargerDetector for justification. 1353 if (!wasPowered && mIsPowered 1354 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1355 && !dockedOnWirelessCharger) { 1356 return false; 1357 } 1358 1359 // If already dreaming and becoming powered, then don't wake. 1360 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1361 return false; 1362 } 1363 1364 // Don't wake while theater mode is enabled. 1365 if (mTheaterModeEnabled && !mWakeUpWhenPluggedOrUnpluggedInTheaterModeConfig) { 1366 return false; 1367 } 1368 1369 // Otherwise wake up! 1370 return true; 1371 } 1372 1373 /** 1374 * Updates the value of mStayOn. 1375 * Sets DIRTY_STAY_ON if a change occurred. 1376 */ 1377 private void updateStayOnLocked(int dirty) { 1378 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1379 final boolean wasStayOn = mStayOn; 1380 if (mStayOnWhilePluggedInSetting != 0 1381 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1382 mStayOn = mBatteryManagerInternal.isPowered(mStayOnWhilePluggedInSetting); 1383 } else { 1384 mStayOn = false; 1385 } 1386 1387 if (mStayOn != wasStayOn) { 1388 mDirty |= DIRTY_STAY_ON; 1389 } 1390 } 1391 } 1392 1393 /** 1394 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1395 * Note that most wake-locks are ignored when the system is asleep. 1396 * 1397 * This function must have no other side-effects. 1398 */ 1399 @SuppressWarnings("deprecation") 1400 private void updateWakeLockSummaryLocked(int dirty) { 1401 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1402 mWakeLockSummary = 0; 1403 1404 final int numWakeLocks = mWakeLocks.size(); 1405 for (int i = 0; i < numWakeLocks; i++) { 1406 final WakeLock wakeLock = mWakeLocks.get(i); 1407 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1408 case PowerManager.PARTIAL_WAKE_LOCK: 1409 mWakeLockSummary |= WAKE_LOCK_CPU; 1410 break; 1411 case PowerManager.FULL_WAKE_LOCK: 1412 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1413 break; 1414 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1415 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1416 break; 1417 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1418 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1419 break; 1420 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1421 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1422 break; 1423 case PowerManager.DOZE_WAKE_LOCK: 1424 mWakeLockSummary |= WAKE_LOCK_DOZE; 1425 break; 1426 } 1427 } 1428 1429 // Cancel wake locks that make no sense based on the current state. 1430 if (mWakefulness != WAKEFULNESS_DOZING) { 1431 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1432 } 1433 if (mWakefulness == WAKEFULNESS_ASLEEP 1434 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1435 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1436 | WAKE_LOCK_BUTTON_BRIGHT); 1437 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1438 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1439 } 1440 } 1441 1442 // Infer implied wake locks where necessary based on the current state. 1443 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1444 if (mWakefulness == WAKEFULNESS_AWAKE) { 1445 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1446 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1447 mWakeLockSummary |= WAKE_LOCK_CPU; 1448 } 1449 } 1450 1451 if (DEBUG_SPEW) { 1452 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1453 + wakefulnessToString(mWakefulness) 1454 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1455 } 1456 } 1457 } 1458 1459 /** 1460 * Updates the value of mUserActivitySummary to summarize the user requested 1461 * state of the system such as whether the screen should be bright or dim. 1462 * Note that user activity is ignored when the system is asleep. 1463 * 1464 * This function must have no other side-effects. 1465 */ 1466 private void updateUserActivitySummaryLocked(long now, int dirty) { 1467 // Update the status of the user activity timeout timer. 1468 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1469 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1470 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1471 1472 long nextTimeout = 0; 1473 if (mWakefulness == WAKEFULNESS_AWAKE 1474 || mWakefulness == WAKEFULNESS_DREAMING 1475 || mWakefulness == WAKEFULNESS_DOZING) { 1476 final int sleepTimeout = getSleepTimeoutLocked(); 1477 final int screenOffTimeout = getScreenOffTimeoutLocked(sleepTimeout); 1478 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1479 1480 mUserActivitySummary = 0; 1481 if (mLastUserActivityTime >= mLastWakeTime) { 1482 nextTimeout = mLastUserActivityTime 1483 + screenOffTimeout - screenDimDuration; 1484 if (now < nextTimeout) { 1485 mUserActivitySummary = USER_ACTIVITY_SCREEN_BRIGHT; 1486 } else { 1487 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1488 if (now < nextTimeout) { 1489 mUserActivitySummary = USER_ACTIVITY_SCREEN_DIM; 1490 } 1491 } 1492 } 1493 if (mUserActivitySummary == 0 1494 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1495 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1496 if (now < nextTimeout) { 1497 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_BRIGHT) { 1498 mUserActivitySummary = USER_ACTIVITY_SCREEN_BRIGHT; 1499 } else if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DIM) { 1500 mUserActivitySummary = USER_ACTIVITY_SCREEN_DIM; 1501 } 1502 } 1503 } 1504 if (mUserActivitySummary == 0) { 1505 if (sleepTimeout >= 0) { 1506 final long anyUserActivity = Math.max(mLastUserActivityTime, 1507 mLastUserActivityTimeNoChangeLights); 1508 if (anyUserActivity >= mLastWakeTime) { 1509 nextTimeout = anyUserActivity + sleepTimeout; 1510 if (now < nextTimeout) { 1511 mUserActivitySummary = USER_ACTIVITY_SCREEN_DREAM; 1512 } 1513 } 1514 } else { 1515 mUserActivitySummary = USER_ACTIVITY_SCREEN_DREAM; 1516 nextTimeout = -1; 1517 } 1518 } 1519 if (mUserActivitySummary != 0 && nextTimeout >= 0) { 1520 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1521 msg.setAsynchronous(true); 1522 mHandler.sendMessageAtTime(msg, nextTimeout); 1523 } 1524 } else { 1525 mUserActivitySummary = 0; 1526 } 1527 1528 if (DEBUG_SPEW) { 1529 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1530 + wakefulnessToString(mWakefulness) 1531 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1532 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1533 } 1534 } 1535 } 1536 1537 /** 1538 * Called when a user activity timeout has occurred. 1539 * Simply indicates that something about user activity has changed so that the new 1540 * state can be recomputed when the power state is updated. 1541 * 1542 * This function must have no other side-effects besides setting the dirty 1543 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1544 */ 1545 private void handleUserActivityTimeout() { // runs on handler thread 1546 synchronized (mLock) { 1547 if (DEBUG_SPEW) { 1548 Slog.d(TAG, "handleUserActivityTimeout"); 1549 } 1550 1551 mDirty |= DIRTY_USER_ACTIVITY; 1552 updatePowerStateLocked(); 1553 } 1554 } 1555 1556 private int getSleepTimeoutLocked() { 1557 int timeout = mSleepTimeoutSetting; 1558 if (timeout <= 0) { 1559 return -1; 1560 } 1561 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1562 } 1563 1564 private int getScreenOffTimeoutLocked(int sleepTimeout) { 1565 int timeout = mScreenOffTimeoutSetting; 1566 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1567 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1568 } 1569 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1570 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1571 } 1572 if (sleepTimeout >= 0) { 1573 timeout = Math.min(timeout, sleepTimeout); 1574 } 1575 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1576 } 1577 1578 private int getScreenDimDurationLocked(int screenOffTimeout) { 1579 return Math.min(mMaximumScreenDimDurationConfig, 1580 (int)(screenOffTimeout * mMaximumScreenDimRatioConfig)); 1581 } 1582 1583 /** 1584 * Updates the wakefulness of the device. 1585 * 1586 * This is the function that decides whether the device should start dreaming 1587 * based on the current wake locks and user activity state. It may modify mDirty 1588 * if the wakefulness changes. 1589 * 1590 * Returns true if the wakefulness changed and we need to restart power state calculation. 1591 */ 1592 private boolean updateWakefulnessLocked(int dirty) { 1593 boolean changed = false; 1594 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1595 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1596 | DIRTY_DOCK_STATE)) != 0) { 1597 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1598 if (DEBUG_SPEW) { 1599 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1600 } 1601 final long time = SystemClock.uptimeMillis(); 1602 if (shouldNapAtBedTimeLocked()) { 1603 changed = napNoUpdateLocked(time, Process.SYSTEM_UID); 1604 } else { 1605 changed = goToSleepNoUpdateLocked(time, 1606 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0, Process.SYSTEM_UID); 1607 } 1608 } 1609 } 1610 return changed; 1611 } 1612 1613 /** 1614 * Returns true if the device should automatically nap and start dreaming when the user 1615 * activity timeout has expired and it's bedtime. 1616 */ 1617 private boolean shouldNapAtBedTimeLocked() { 1618 return mDreamsActivateOnSleepSetting 1619 || (mDreamsActivateOnDockSetting 1620 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1621 } 1622 1623 /** 1624 * Returns true if the device should go to sleep now. 1625 * Also used when exiting a dream to determine whether we should go back 1626 * to being fully awake or else go to sleep for good. 1627 */ 1628 private boolean isItBedTimeYetLocked() { 1629 return mBootCompleted && !isBeingKeptAwakeLocked(); 1630 } 1631 1632 /** 1633 * Returns true if the device is being kept awake by a wake lock, user activity 1634 * or the stay on while powered setting. We also keep the phone awake when 1635 * the proximity sensor returns a positive result so that the device does not 1636 * lock while in a phone call. This function only controls whether the device 1637 * will go to sleep or dream which is independent of whether it will be allowed 1638 * to suspend. 1639 */ 1640 private boolean isBeingKeptAwakeLocked() { 1641 return mStayOn 1642 || mProximityPositive 1643 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1644 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1645 | USER_ACTIVITY_SCREEN_DIM)) != 0 1646 || mScreenBrightnessBoostInProgress; 1647 } 1648 1649 /** 1650 * Determines whether to post a message to the sandman to update the dream state. 1651 */ 1652 private void updateDreamLocked(int dirty, boolean displayBecameReady) { 1653 if ((dirty & (DIRTY_WAKEFULNESS 1654 | DIRTY_USER_ACTIVITY 1655 | DIRTY_WAKE_LOCKS 1656 | DIRTY_BOOT_COMPLETED 1657 | DIRTY_SETTINGS 1658 | DIRTY_IS_POWERED 1659 | DIRTY_STAY_ON 1660 | DIRTY_PROXIMITY_POSITIVE 1661 | DIRTY_BATTERY_STATE)) != 0 || displayBecameReady) { 1662 if (mDisplayReady) { 1663 scheduleSandmanLocked(); 1664 } 1665 } 1666 } 1667 1668 private void scheduleSandmanLocked() { 1669 if (!mSandmanScheduled) { 1670 mSandmanScheduled = true; 1671 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1672 msg.setAsynchronous(true); 1673 mHandler.sendMessage(msg); 1674 } 1675 } 1676 1677 /** 1678 * Called when the device enters or exits a dreaming or dozing state. 1679 * 1680 * We do this asynchronously because we must call out of the power manager to start 1681 * the dream and we don't want to hold our lock while doing so. There is a risk that 1682 * the device will wake or go to sleep in the meantime so we have to handle that case. 1683 */ 1684 private void handleSandman() { // runs on handler thread 1685 // Handle preconditions. 1686 final boolean startDreaming; 1687 final int wakefulness; 1688 synchronized (mLock) { 1689 mSandmanScheduled = false; 1690 wakefulness = mWakefulness; 1691 if (mSandmanSummoned && mDisplayReady) { 1692 startDreaming = canDreamLocked() || canDozeLocked(); 1693 mSandmanSummoned = false; 1694 } else { 1695 startDreaming = false; 1696 } 1697 } 1698 1699 // Start dreaming if needed. 1700 // We only control the dream on the handler thread, so we don't need to worry about 1701 // concurrent attempts to start or stop the dream. 1702 final boolean isDreaming; 1703 if (mDreamManager != null) { 1704 // Restart the dream whenever the sandman is summoned. 1705 if (startDreaming) { 1706 mDreamManager.stopDream(false /*immediate*/); 1707 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1708 } 1709 isDreaming = mDreamManager.isDreaming(); 1710 } else { 1711 isDreaming = false; 1712 } 1713 1714 // Update dream state. 1715 synchronized (mLock) { 1716 // Remember the initial battery level when the dream started. 1717 if (startDreaming && isDreaming) { 1718 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1719 if (wakefulness == WAKEFULNESS_DOZING) { 1720 Slog.i(TAG, "Dozing..."); 1721 } else { 1722 Slog.i(TAG, "Dreaming..."); 1723 } 1724 } 1725 1726 // If preconditions changed, wait for the next iteration to determine 1727 // whether the dream should continue (or be restarted). 1728 if (mSandmanSummoned || mWakefulness != wakefulness) { 1729 return; // wait for next cycle 1730 } 1731 1732 // Determine whether the dream should continue. 1733 if (wakefulness == WAKEFULNESS_DREAMING) { 1734 if (isDreaming && canDreamLocked()) { 1735 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1736 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1737 - mDreamsBatteryLevelDrainCutoffConfig 1738 && !isBeingKeptAwakeLocked()) { 1739 // If the user activity timeout expired and the battery appears 1740 // to be draining faster than it is charging then stop dreaming 1741 // and go to sleep. 1742 Slog.i(TAG, "Stopping dream because the battery appears to " 1743 + "be draining faster than it is charging. " 1744 + "Battery level when dream started: " 1745 + mBatteryLevelWhenDreamStarted + "%. " 1746 + "Battery level now: " + mBatteryLevel + "%."); 1747 } else { 1748 return; // continue dreaming 1749 } 1750 } 1751 1752 // Dream has ended or will be stopped. Update the power state. 1753 if (isItBedTimeYetLocked()) { 1754 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1755 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0, Process.SYSTEM_UID); 1756 updatePowerStateLocked(); 1757 } else { 1758 wakeUpNoUpdateLocked(SystemClock.uptimeMillis(), Process.SYSTEM_UID); 1759 updatePowerStateLocked(); 1760 } 1761 } else if (wakefulness == WAKEFULNESS_DOZING) { 1762 if (isDreaming) { 1763 return; // continue dozing 1764 } 1765 1766 // Doze has ended or will be stopped. Update the power state. 1767 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis(), Process.SYSTEM_UID); 1768 updatePowerStateLocked(); 1769 } 1770 } 1771 1772 // Stop dream. 1773 if (isDreaming) { 1774 mDreamManager.stopDream(false /*immediate*/); 1775 } 1776 } 1777 1778 /** 1779 * Returns true if the device is allowed to dream in its current state. 1780 */ 1781 private boolean canDreamLocked() { 1782 if (mWakefulness != WAKEFULNESS_DREAMING 1783 || !mDreamsSupportedConfig 1784 || !mDreamsEnabledSetting 1785 || !mDisplayPowerRequest.isBrightOrDim() 1786 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1787 | USER_ACTIVITY_SCREEN_DIM | USER_ACTIVITY_SCREEN_DREAM)) == 0 1788 || !mBootCompleted) { 1789 return false; 1790 } 1791 if (!isBeingKeptAwakeLocked()) { 1792 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1793 return false; 1794 } 1795 if (!mIsPowered 1796 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1797 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1798 return false; 1799 } 1800 if (mIsPowered 1801 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1802 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1803 return false; 1804 } 1805 } 1806 return true; 1807 } 1808 1809 /** 1810 * Returns true if the device is allowed to doze in its current state. 1811 */ 1812 private boolean canDozeLocked() { 1813 return mWakefulness == WAKEFULNESS_DOZING; 1814 } 1815 1816 /** 1817 * Updates the display power state asynchronously. 1818 * When the update is finished, mDisplayReady will be set to true. The display 1819 * controller posts a message to tell us when the actual display power state 1820 * has been updated so we come back here to double-check and finish up. 1821 * 1822 * This function recalculates the display power state each time. 1823 * 1824 * @return True if the display became ready. 1825 */ 1826 private boolean updateDisplayPowerStateLocked(int dirty) { 1827 final boolean oldDisplayReady = mDisplayReady; 1828 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1829 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1830 | DIRTY_SETTINGS | DIRTY_SCREEN_BRIGHTNESS_BOOST)) != 0) { 1831 mDisplayPowerRequest.policy = getDesiredScreenPolicyLocked(); 1832 1833 // Determine appropriate screen brightness and auto-brightness adjustments. 1834 int screenBrightness = mScreenBrightnessSettingDefault; 1835 float screenAutoBrightnessAdjustment = 0.0f; 1836 boolean autoBrightness = (mScreenBrightnessModeSetting == 1837 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1838 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1839 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1840 autoBrightness = false; 1841 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1842 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1843 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1844 screenBrightness = mScreenBrightnessSetting; 1845 } 1846 if (autoBrightness) { 1847 screenBrightness = mScreenBrightnessSettingDefault; 1848 if (isValidAutoBrightnessAdjustment( 1849 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1850 screenAutoBrightnessAdjustment = 1851 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1852 } else if (isValidAutoBrightnessAdjustment( 1853 mScreenAutoBrightnessAdjustmentSetting)) { 1854 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1855 } 1856 } 1857 screenBrightness = Math.max(Math.min(screenBrightness, 1858 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1859 screenAutoBrightnessAdjustment = Math.max(Math.min( 1860 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1861 1862 // Update display power request. 1863 mDisplayPowerRequest.screenBrightness = screenBrightness; 1864 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1865 screenAutoBrightnessAdjustment; 1866 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1867 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1868 mDisplayPowerRequest.lowPowerMode = mLowPowerModeEnabled; 1869 mDisplayPowerRequest.boostScreenBrightness = mScreenBrightnessBoostInProgress; 1870 1871 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DOZE) { 1872 mDisplayPowerRequest.dozeScreenState = mDozeScreenStateOverrideFromDreamManager; 1873 mDisplayPowerRequest.dozeScreenBrightness = 1874 mDozeScreenBrightnessOverrideFromDreamManager; 1875 } else { 1876 mDisplayPowerRequest.dozeScreenState = Display.STATE_UNKNOWN; 1877 mDisplayPowerRequest.dozeScreenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 1878 } 1879 1880 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1881 mRequestWaitForNegativeProximity); 1882 mRequestWaitForNegativeProximity = false; 1883 1884 if (DEBUG_SPEW) { 1885 Slog.d(TAG, "updateDisplayPowerStateLocked: mDisplayReady=" + mDisplayReady 1886 + ", policy=" + mDisplayPowerRequest.policy 1887 + ", mWakefulness=" + mWakefulness 1888 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1889 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1890 + ", mBootCompleted=" + mBootCompleted 1891 + ", mScreenBrightnessBoostInProgress=" 1892 + mScreenBrightnessBoostInProgress); 1893 } 1894 } 1895 return mDisplayReady && !oldDisplayReady; 1896 } 1897 1898 private void updateScreenBrightnessBoostLocked(int dirty) { 1899 if ((dirty & DIRTY_SCREEN_BRIGHTNESS_BOOST) != 0) { 1900 if (mScreenBrightnessBoostInProgress) { 1901 final long now = SystemClock.uptimeMillis(); 1902 mHandler.removeMessages(MSG_SCREEN_BRIGHTNESS_BOOST_TIMEOUT); 1903 if (mLastScreenBrightnessBoostTime > mLastSleepTime) { 1904 final long boostTimeout = mLastScreenBrightnessBoostTime + 1905 SCREEN_BRIGHTNESS_BOOST_TIMEOUT; 1906 if (boostTimeout > now) { 1907 Message msg = mHandler.obtainMessage(MSG_SCREEN_BRIGHTNESS_BOOST_TIMEOUT); 1908 msg.setAsynchronous(true); 1909 mHandler.sendMessageAtTime(msg, boostTimeout); 1910 return; 1911 } 1912 } 1913 mScreenBrightnessBoostInProgress = false; 1914 userActivityNoUpdateLocked(now, 1915 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1916 } 1917 } 1918 } 1919 1920 private static boolean isValidBrightness(int value) { 1921 return value >= 0 && value <= 255; 1922 } 1923 1924 private static boolean isValidAutoBrightnessAdjustment(float value) { 1925 // Handles NaN by always returning false. 1926 return value >= -1.0f && value <= 1.0f; 1927 } 1928 1929 private int getDesiredScreenPolicyLocked() { 1930 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1931 return DisplayPowerRequest.POLICY_OFF; 1932 } 1933 1934 if (mWakefulness == WAKEFULNESS_DOZING) { 1935 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1936 return DisplayPowerRequest.POLICY_DOZE; 1937 } 1938 if (mDozeAfterScreenOffConfig) { 1939 return DisplayPowerRequest.POLICY_OFF; 1940 } 1941 // Fall through and preserve the current screen policy if not configured to 1942 // doze after screen off. This causes the screen off transition to be skipped. 1943 } 1944 1945 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1946 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1947 || !mBootCompleted 1948 || mScreenBrightnessBoostInProgress) { 1949 return DisplayPowerRequest.POLICY_BRIGHT; 1950 } 1951 1952 return DisplayPowerRequest.POLICY_DIM; 1953 } 1954 1955 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1956 new DisplayManagerInternal.DisplayPowerCallbacks() { 1957 private int mDisplayState = Display.STATE_UNKNOWN; 1958 1959 @Override 1960 public void onStateChanged() { 1961 synchronized (mLock) { 1962 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1963 updatePowerStateLocked(); 1964 } 1965 } 1966 1967 @Override 1968 public void onProximityPositive() { 1969 synchronized (mLock) { 1970 mProximityPositive = true; 1971 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1972 updatePowerStateLocked(); 1973 } 1974 } 1975 1976 @Override 1977 public void onProximityNegative() { 1978 synchronized (mLock) { 1979 mProximityPositive = false; 1980 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1981 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1982 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1983 updatePowerStateLocked(); 1984 } 1985 } 1986 1987 @Override 1988 public void onDisplayStateChange(int state) { 1989 // This method is only needed to support legacy display blanking behavior 1990 // where the display's power state is coupled to suspend or to the power HAL. 1991 // The order of operations matters here. 1992 synchronized (mLock) { 1993 if (mDisplayState != state) { 1994 mDisplayState = state; 1995 if (state == Display.STATE_OFF) { 1996 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1997 setHalInteractiveModeLocked(false); 1998 } 1999 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 2000 setHalAutoSuspendModeLocked(true); 2001 } 2002 } else { 2003 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 2004 setHalAutoSuspendModeLocked(false); 2005 } 2006 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 2007 setHalInteractiveModeLocked(true); 2008 } 2009 } 2010 } 2011 } 2012 } 2013 2014 @Override 2015 public void acquireSuspendBlocker() { 2016 mDisplaySuspendBlocker.acquire(); 2017 } 2018 2019 @Override 2020 public void releaseSuspendBlocker() { 2021 mDisplaySuspendBlocker.release(); 2022 } 2023 2024 @Override 2025 public String toString() { 2026 synchronized (this) { 2027 return "state=" + Display.stateToString(mDisplayState); 2028 } 2029 } 2030 }; 2031 2032 private boolean shouldUseProximitySensorLocked() { 2033 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 2034 } 2035 2036 /** 2037 * Updates the suspend blocker that keeps the CPU alive. 2038 * 2039 * This function must have no other side-effects. 2040 */ 2041 private void updateSuspendBlockerLocked() { 2042 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 2043 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 2044 final boolean autoSuspend = !needDisplaySuspendBlocker; 2045 final boolean interactive = mDisplayPowerRequest.isBrightOrDim(); 2046 2047 // Disable auto-suspend if needed. 2048 // FIXME We should consider just leaving auto-suspend enabled forever since 2049 // we already hold the necessary wakelocks. 2050 if (!autoSuspend && mDecoupleHalAutoSuspendModeFromDisplayConfig) { 2051 setHalAutoSuspendModeLocked(false); 2052 } 2053 2054 // First acquire suspend blockers if needed. 2055 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 2056 mWakeLockSuspendBlocker.acquire(); 2057 mHoldingWakeLockSuspendBlocker = true; 2058 } 2059 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 2060 mDisplaySuspendBlocker.acquire(); 2061 mHoldingDisplaySuspendBlocker = true; 2062 } 2063 2064 // Inform the power HAL about interactive mode. 2065 // Although we could set interactive strictly based on the wakefulness 2066 // as reported by isInteractive(), it is actually more desirable to track 2067 // the display policy state instead so that the interactive state observed 2068 // by the HAL more accurately tracks transitions between AWAKE and DOZING. 2069 // Refer to getDesiredScreenPolicyLocked() for details. 2070 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 2071 // When becoming non-interactive, we want to defer sending this signal 2072 // until the display is actually ready so that all transitions have 2073 // completed. This is probably a good sign that things have gotten 2074 // too tangled over here... 2075 if (interactive || mDisplayReady) { 2076 setHalInteractiveModeLocked(interactive); 2077 } 2078 } 2079 2080 // Then release suspend blockers if needed. 2081 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 2082 mWakeLockSuspendBlocker.release(); 2083 mHoldingWakeLockSuspendBlocker = false; 2084 } 2085 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 2086 mDisplaySuspendBlocker.release(); 2087 mHoldingDisplaySuspendBlocker = false; 2088 } 2089 2090 // Enable auto-suspend if needed. 2091 if (autoSuspend && mDecoupleHalAutoSuspendModeFromDisplayConfig) { 2092 setHalAutoSuspendModeLocked(true); 2093 } 2094 } 2095 2096 /** 2097 * Return true if we must keep a suspend blocker active on behalf of the display. 2098 * We do so if the screen is on or is in transition between states. 2099 */ 2100 private boolean needDisplaySuspendBlockerLocked() { 2101 if (!mDisplayReady) { 2102 return true; 2103 } 2104 if (mDisplayPowerRequest.isBrightOrDim()) { 2105 // If we asked for the screen to be on but it is off due to the proximity 2106 // sensor then we may suspend but only if the configuration allows it. 2107 // On some hardware it may not be safe to suspend because the proximity 2108 // sensor may not be correctly configured as a wake-up source. 2109 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 2110 || !mSuspendWhenScreenOffDueToProximityConfig) { 2111 return true; 2112 } 2113 } 2114 if (mScreenBrightnessBoostInProgress) { 2115 return true; 2116 } 2117 // Let the system suspend if the screen is off or dozing. 2118 return false; 2119 } 2120 2121 private void setHalAutoSuspendModeLocked(boolean enable) { 2122 if (enable != mHalAutoSuspendModeEnabled) { 2123 if (DEBUG) { 2124 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 2125 } 2126 mHalAutoSuspendModeEnabled = enable; 2127 Trace.traceBegin(Trace.TRACE_TAG_POWER, "setHalAutoSuspend(" + enable + ")"); 2128 try { 2129 nativeSetAutoSuspend(enable); 2130 } finally { 2131 Trace.traceEnd(Trace.TRACE_TAG_POWER); 2132 } 2133 } 2134 } 2135 2136 private void setHalInteractiveModeLocked(boolean enable) { 2137 if (enable != mHalInteractiveModeEnabled) { 2138 if (DEBUG) { 2139 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 2140 } 2141 mHalInteractiveModeEnabled = enable; 2142 Trace.traceBegin(Trace.TRACE_TAG_POWER, "setHalInteractive(" + enable + ")"); 2143 try { 2144 nativeSetInteractive(enable); 2145 } finally { 2146 Trace.traceEnd(Trace.TRACE_TAG_POWER); 2147 } 2148 } 2149 } 2150 2151 private boolean isInteractiveInternal() { 2152 synchronized (mLock) { 2153 return mInteractive; 2154 } 2155 } 2156 2157 private boolean isLowPowerModeInternal() { 2158 synchronized (mLock) { 2159 return mLowPowerModeEnabled; 2160 } 2161 } 2162 2163 private boolean setLowPowerModeInternal(boolean mode) { 2164 synchronized (mLock) { 2165 if (DEBUG) Slog.d(TAG, "setLowPowerModeInternal " + mode + " mIsPowered=" + mIsPowered); 2166 if (mIsPowered) { 2167 return false; 2168 } 2169 Settings.Global.putInt(mContext.getContentResolver(), 2170 Settings.Global.LOW_POWER_MODE, mode ? 1 : 0); 2171 mLowPowerModeSetting = mode; 2172 2173 if (mAutoLowPowerModeConfigured && mBatteryLevelLow) { 2174 if (mode && mAutoLowPowerModeSnoozing) { 2175 if (DEBUG_SPEW) { 2176 Slog.d(TAG, "setLowPowerModeInternal: clearing low power mode snooze"); 2177 } 2178 mAutoLowPowerModeSnoozing = false; 2179 } else if (!mode && !mAutoLowPowerModeSnoozing) { 2180 if (DEBUG_SPEW) { 2181 Slog.d(TAG, "setLowPowerModeInternal: snoozing low power mode"); 2182 } 2183 mAutoLowPowerModeSnoozing = true; 2184 } 2185 } 2186 2187 updateLowPowerModeLocked(); 2188 return true; 2189 } 2190 } 2191 2192 private void handleBatteryStateChangedLocked() { 2193 mDirty |= DIRTY_BATTERY_STATE; 2194 updatePowerStateLocked(); 2195 } 2196 2197 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 2198 final String reason, boolean wait) { 2199 if (mHandler == null || !mSystemReady) { 2200 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 2201 } 2202 2203 Runnable runnable = new Runnable() { 2204 @Override 2205 public void run() { 2206 synchronized (this) { 2207 if (shutdown) { 2208 ShutdownThread.shutdown(mContext, confirm); 2209 } else { 2210 ShutdownThread.reboot(mContext, reason, confirm); 2211 } 2212 } 2213 } 2214 }; 2215 2216 // ShutdownThread must run on a looper capable of displaying the UI. 2217 Message msg = Message.obtain(mHandler, runnable); 2218 msg.setAsynchronous(true); 2219 mHandler.sendMessage(msg); 2220 2221 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 2222 if (wait) { 2223 synchronized (runnable) { 2224 while (true) { 2225 try { 2226 runnable.wait(); 2227 } catch (InterruptedException e) { 2228 } 2229 } 2230 } 2231 } 2232 } 2233 2234 private void crashInternal(final String message) { 2235 Thread t = new Thread("PowerManagerService.crash()") { 2236 @Override 2237 public void run() { 2238 throw new RuntimeException(message); 2239 } 2240 }; 2241 try { 2242 t.start(); 2243 t.join(); 2244 } catch (InterruptedException e) { 2245 Slog.wtf(TAG, e); 2246 } 2247 } 2248 2249 private void setStayOnSettingInternal(int val) { 2250 Settings.Global.putInt(mContext.getContentResolver(), 2251 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 2252 } 2253 2254 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 2255 synchronized (mLock) { 2256 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 2257 mDirty |= DIRTY_SETTINGS; 2258 updatePowerStateLocked(); 2259 } 2260 } 2261 2262 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 2263 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 2264 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 2265 } 2266 2267 private void setAttentionLightInternal(boolean on, int color) { 2268 Light light; 2269 synchronized (mLock) { 2270 if (!mSystemReady) { 2271 return; 2272 } 2273 light = mAttentionLight; 2274 } 2275 2276 // Control light outside of lock. 2277 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 2278 } 2279 2280 private void boostScreenBrightnessInternal(long eventTime, int uid) { 2281 synchronized (mLock) { 2282 if (!mSystemReady || mWakefulness == WAKEFULNESS_ASLEEP 2283 || eventTime < mLastScreenBrightnessBoostTime) { 2284 return; 2285 } 2286 2287 Slog.i(TAG, "Brightness boost activated (uid " + uid +")..."); 2288 mLastScreenBrightnessBoostTime = eventTime; 2289 mScreenBrightnessBoostInProgress = true; 2290 mDirty |= DIRTY_SCREEN_BRIGHTNESS_BOOST; 2291 2292 userActivityNoUpdateLocked(eventTime, 2293 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, uid); 2294 updatePowerStateLocked(); 2295 } 2296 } 2297 2298 /** 2299 * Called when a screen brightness boost timeout has occurred. 2300 * 2301 * This function must have no other side-effects besides setting the dirty 2302 * bit and calling update power state. 2303 */ 2304 private void handleScreenBrightnessBoostTimeout() { // runs on handler thread 2305 synchronized (mLock) { 2306 if (DEBUG_SPEW) { 2307 Slog.d(TAG, "handleScreenBrightnessBoostTimeout"); 2308 } 2309 2310 mDirty |= DIRTY_SCREEN_BRIGHTNESS_BOOST; 2311 updatePowerStateLocked(); 2312 } 2313 } 2314 2315 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 2316 synchronized (mLock) { 2317 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 2318 mScreenBrightnessOverrideFromWindowManager = brightness; 2319 mDirty |= DIRTY_SETTINGS; 2320 updatePowerStateLocked(); 2321 } 2322 } 2323 } 2324 2325 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 2326 synchronized (mLock) { 2327 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 2328 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 2329 mDirty |= DIRTY_SETTINGS; 2330 updatePowerStateLocked(); 2331 } 2332 } 2333 } 2334 2335 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2336 synchronized (mLock) { 2337 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2338 mTemporaryScreenBrightnessSettingOverride = brightness; 2339 mDirty |= DIRTY_SETTINGS; 2340 updatePowerStateLocked(); 2341 } 2342 } 2343 } 2344 2345 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2346 synchronized (mLock) { 2347 // Note: This condition handles NaN because NaN is not equal to any other 2348 // value, including itself. 2349 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2350 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2351 mDirty |= DIRTY_SETTINGS; 2352 updatePowerStateLocked(); 2353 } 2354 } 2355 } 2356 2357 private void setDozeOverrideFromDreamManagerInternal( 2358 int screenState, int screenBrightness) { 2359 synchronized (mLock) { 2360 if (mDozeScreenStateOverrideFromDreamManager != screenState 2361 || mDozeScreenBrightnessOverrideFromDreamManager != screenBrightness) { 2362 mDozeScreenStateOverrideFromDreamManager = screenState; 2363 mDozeScreenBrightnessOverrideFromDreamManager = screenBrightness; 2364 mDirty |= DIRTY_SETTINGS; 2365 updatePowerStateLocked(); 2366 } 2367 } 2368 } 2369 2370 private void powerHintInternal(int hintId, int data) { 2371 nativeSendPowerHint(hintId, data); 2372 } 2373 2374 /** 2375 * Low-level function turn the device off immediately, without trying 2376 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2377 */ 2378 public static void lowLevelShutdown() { 2379 SystemProperties.set("sys.powerctl", "shutdown"); 2380 } 2381 2382 /** 2383 * Low-level function to reboot the device. On success, this 2384 * function doesn't return. If more than 20 seconds passes from 2385 * the time a reboot is requested (120 seconds for reboot to 2386 * recovery), this method returns. 2387 * 2388 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2389 */ 2390 public static void lowLevelReboot(String reason) { 2391 if (reason == null) { 2392 reason = ""; 2393 } 2394 long duration; 2395 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2396 // If we are rebooting to go into recovery, instead of 2397 // setting sys.powerctl directly we'll start the 2398 // pre-recovery service which will do some preparation for 2399 // recovery and then reboot for us. 2400 // 2401 // This preparation can take more than 20 seconds if 2402 // there's a very large update package, so lengthen the 2403 // timeout. 2404 SystemProperties.set("ctl.start", "pre-recovery"); 2405 duration = 120 * 1000L; 2406 } else { 2407 SystemProperties.set("sys.powerctl", "reboot," + reason); 2408 duration = 20 * 1000L; 2409 } 2410 try { 2411 Thread.sleep(duration); 2412 } catch (InterruptedException e) { 2413 Thread.currentThread().interrupt(); 2414 } 2415 } 2416 2417 @Override // Watchdog.Monitor implementation 2418 public void monitor() { 2419 // Grab and release lock for watchdog monitor to detect deadlocks. 2420 synchronized (mLock) { 2421 } 2422 } 2423 2424 private void dumpInternal(PrintWriter pw) { 2425 pw.println("POWER MANAGER (dumpsys power)\n"); 2426 2427 final WirelessChargerDetector wcd; 2428 synchronized (mLock) { 2429 pw.println("Power Manager State:"); 2430 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2431 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2432 pw.println(" mInteractive=" + mInteractive); 2433 pw.println(" mIsPowered=" + mIsPowered); 2434 pw.println(" mPlugType=" + mPlugType); 2435 pw.println(" mBatteryLevel=" + mBatteryLevel); 2436 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2437 pw.println(" mDockState=" + mDockState); 2438 pw.println(" mStayOn=" + mStayOn); 2439 pw.println(" mProximityPositive=" + mProximityPositive); 2440 pw.println(" mBootCompleted=" + mBootCompleted); 2441 pw.println(" mSystemReady=" + mSystemReady); 2442 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2443 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2444 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2445 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2446 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2447 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2448 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2449 pw.println(" mLowPowerModeEnabled=" + mLowPowerModeEnabled); 2450 pw.println(" mBatteryLevelLow=" + mBatteryLevelLow); 2451 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2452 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2453 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2454 pw.println(" mLastUserActivityTimeNoChangeLights=" 2455 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2456 pw.println(" mLastInteractivePowerHintTime=" 2457 + TimeUtils.formatUptime(mLastInteractivePowerHintTime)); 2458 pw.println(" mLastScreenBrightnessBoostTime=" 2459 + TimeUtils.formatUptime(mLastScreenBrightnessBoostTime)); 2460 pw.println(" mScreenBrightnessBoostInProgress=" 2461 + mScreenBrightnessBoostInProgress); 2462 pw.println(" mDisplayReady=" + mDisplayReady); 2463 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2464 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2465 2466 pw.println(); 2467 pw.println("Settings and Configuration:"); 2468 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2469 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2470 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2471 + mDecoupleHalInteractiveModeFromDisplayConfig); 2472 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2473 + mWakeUpWhenPluggedOrUnpluggedConfig); 2474 pw.println(" mWakeUpWhenPluggedOrUnpluggedInTheaterModeConfig=" 2475 + mWakeUpWhenPluggedOrUnpluggedInTheaterModeConfig); 2476 pw.println(" mTheaterModeEnabled=" 2477 + mTheaterModeEnabled); 2478 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2479 + mSuspendWhenScreenOffDueToProximityConfig); 2480 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2481 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2482 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2483 + mDreamsActivatedOnSleepByDefaultConfig); 2484 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2485 + mDreamsActivatedOnDockByDefaultConfig); 2486 pw.println(" mDreamsEnabledOnBatteryConfig=" 2487 + mDreamsEnabledOnBatteryConfig); 2488 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2489 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2490 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2491 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2492 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2493 + mDreamsBatteryLevelDrainCutoffConfig); 2494 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2495 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2496 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2497 pw.println(" mDozeAfterScreenOffConfig=" + mDozeAfterScreenOffConfig); 2498 pw.println(" mLowPowerModeSetting=" + mLowPowerModeSetting); 2499 pw.println(" mAutoLowPowerModeConfigured=" + mAutoLowPowerModeConfigured); 2500 pw.println(" mAutoLowPowerModeSnoozing=" + mAutoLowPowerModeSnoozing); 2501 pw.println(" mMinimumScreenOffTimeoutConfig=" + mMinimumScreenOffTimeoutConfig); 2502 pw.println(" mMaximumScreenDimDurationConfig=" + mMaximumScreenDimDurationConfig); 2503 pw.println(" mMaximumScreenDimRatioConfig=" + mMaximumScreenDimRatioConfig); 2504 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2505 pw.println(" mSleepTimeoutSetting=" + mSleepTimeoutSetting); 2506 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2507 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2508 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2509 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2510 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2511 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2512 + mScreenAutoBrightnessAdjustmentSetting); 2513 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2514 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2515 + mScreenBrightnessOverrideFromWindowManager); 2516 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2517 + mUserActivityTimeoutOverrideFromWindowManager); 2518 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2519 + mTemporaryScreenBrightnessSettingOverride); 2520 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2521 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2522 pw.println(" mDozeScreenStateOverrideFromDreamManager=" 2523 + mDozeScreenStateOverrideFromDreamManager); 2524 pw.println(" mDozeScreenBrightnessOverrideFromDreamManager=" 2525 + mDozeScreenBrightnessOverrideFromDreamManager); 2526 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2527 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2528 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2529 2530 final int sleepTimeout = getSleepTimeoutLocked(); 2531 final int screenOffTimeout = getScreenOffTimeoutLocked(sleepTimeout); 2532 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2533 pw.println(); 2534 pw.println("Sleep timeout: " + sleepTimeout + " ms"); 2535 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2536 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2537 2538 pw.println(); 2539 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2540 for (WakeLock wl : mWakeLocks) { 2541 pw.println(" " + wl); 2542 } 2543 2544 pw.println(); 2545 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2546 for (SuspendBlocker sb : mSuspendBlockers) { 2547 pw.println(" " + sb); 2548 } 2549 2550 pw.println(); 2551 pw.println("Display Power: " + mDisplayPowerCallbacks); 2552 2553 wcd = mWirelessChargerDetector; 2554 } 2555 2556 if (wcd != null) { 2557 wcd.dump(pw); 2558 } 2559 } 2560 2561 private SuspendBlocker createSuspendBlockerLocked(String name) { 2562 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2563 mSuspendBlockers.add(suspendBlocker); 2564 return suspendBlocker; 2565 } 2566 2567 private static String wakefulnessToString(int wakefulness) { 2568 switch (wakefulness) { 2569 case WAKEFULNESS_ASLEEP: 2570 return "Asleep"; 2571 case WAKEFULNESS_AWAKE: 2572 return "Awake"; 2573 case WAKEFULNESS_DREAMING: 2574 return "Dreaming"; 2575 case WAKEFULNESS_DOZING: 2576 return "Dozing"; 2577 default: 2578 return Integer.toString(wakefulness); 2579 } 2580 } 2581 2582 private static WorkSource copyWorkSource(WorkSource workSource) { 2583 return workSource != null ? new WorkSource(workSource) : null; 2584 } 2585 2586 private final class BatteryReceiver extends BroadcastReceiver { 2587 @Override 2588 public void onReceive(Context context, Intent intent) { 2589 synchronized (mLock) { 2590 handleBatteryStateChangedLocked(); 2591 } 2592 } 2593 } 2594 2595 private final class DreamReceiver extends BroadcastReceiver { 2596 @Override 2597 public void onReceive(Context context, Intent intent) { 2598 synchronized (mLock) { 2599 scheduleSandmanLocked(); 2600 } 2601 } 2602 } 2603 2604 private final class UserSwitchedReceiver extends BroadcastReceiver { 2605 @Override 2606 public void onReceive(Context context, Intent intent) { 2607 synchronized (mLock) { 2608 handleSettingsChangedLocked(); 2609 } 2610 } 2611 } 2612 2613 private final class DockReceiver extends BroadcastReceiver { 2614 @Override 2615 public void onReceive(Context context, Intent intent) { 2616 synchronized (mLock) { 2617 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2618 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2619 if (mDockState != dockState) { 2620 mDockState = dockState; 2621 mDirty |= DIRTY_DOCK_STATE; 2622 updatePowerStateLocked(); 2623 } 2624 } 2625 } 2626 } 2627 2628 private final class SettingsObserver extends ContentObserver { 2629 public SettingsObserver(Handler handler) { 2630 super(handler); 2631 } 2632 2633 @Override 2634 public void onChange(boolean selfChange, Uri uri) { 2635 synchronized (mLock) { 2636 handleSettingsChangedLocked(); 2637 } 2638 } 2639 } 2640 2641 /** 2642 * Handler for asynchronous operations performed by the power manager. 2643 */ 2644 private final class PowerManagerHandler extends Handler { 2645 public PowerManagerHandler(Looper looper) { 2646 super(looper, null, true /*async*/); 2647 } 2648 2649 @Override 2650 public void handleMessage(Message msg) { 2651 switch (msg.what) { 2652 case MSG_USER_ACTIVITY_TIMEOUT: 2653 handleUserActivityTimeout(); 2654 break; 2655 case MSG_SANDMAN: 2656 handleSandman(); 2657 break; 2658 case MSG_SCREEN_BRIGHTNESS_BOOST_TIMEOUT: 2659 handleScreenBrightnessBoostTimeout(); 2660 break; 2661 } 2662 } 2663 } 2664 2665 /** 2666 * Represents a wake lock that has been acquired by an application. 2667 */ 2668 private final class WakeLock implements IBinder.DeathRecipient { 2669 public final IBinder mLock; 2670 public int mFlags; 2671 public String mTag; 2672 public final String mPackageName; 2673 public WorkSource mWorkSource; 2674 public String mHistoryTag; 2675 public final int mOwnerUid; 2676 public final int mOwnerPid; 2677 public boolean mNotifiedAcquired; 2678 2679 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2680 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2681 mLock = lock; 2682 mFlags = flags; 2683 mTag = tag; 2684 mPackageName = packageName; 2685 mWorkSource = copyWorkSource(workSource); 2686 mHistoryTag = historyTag; 2687 mOwnerUid = ownerUid; 2688 mOwnerPid = ownerPid; 2689 } 2690 2691 @Override 2692 public void binderDied() { 2693 PowerManagerService.this.handleWakeLockDeath(this); 2694 } 2695 2696 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2697 int ownerUid, int ownerPid) { 2698 return mFlags == flags 2699 && mTag.equals(tag) 2700 && hasSameWorkSource(workSource) 2701 && mOwnerUid == ownerUid 2702 && mOwnerPid == ownerPid; 2703 } 2704 2705 public void updateProperties(int flags, String tag, String packageName, 2706 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2707 if (!mPackageName.equals(packageName)) { 2708 throw new IllegalStateException("Existing wake lock package name changed: " 2709 + mPackageName + " to " + packageName); 2710 } 2711 if (mOwnerUid != ownerUid) { 2712 throw new IllegalStateException("Existing wake lock uid changed: " 2713 + mOwnerUid + " to " + ownerUid); 2714 } 2715 if (mOwnerPid != ownerPid) { 2716 throw new IllegalStateException("Existing wake lock pid changed: " 2717 + mOwnerPid + " to " + ownerPid); 2718 } 2719 mFlags = flags; 2720 mTag = tag; 2721 updateWorkSource(workSource); 2722 mHistoryTag = historyTag; 2723 } 2724 2725 public boolean hasSameWorkSource(WorkSource workSource) { 2726 return Objects.equal(mWorkSource, workSource); 2727 } 2728 2729 public void updateWorkSource(WorkSource workSource) { 2730 mWorkSource = copyWorkSource(workSource); 2731 } 2732 2733 @Override 2734 public String toString() { 2735 return getLockLevelString() 2736 + " '" + mTag + "'" + getLockFlagsString() 2737 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2738 } 2739 2740 @SuppressWarnings("deprecation") 2741 private String getLockLevelString() { 2742 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2743 case PowerManager.FULL_WAKE_LOCK: 2744 return "FULL_WAKE_LOCK "; 2745 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2746 return "SCREEN_BRIGHT_WAKE_LOCK "; 2747 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2748 return "SCREEN_DIM_WAKE_LOCK "; 2749 case PowerManager.PARTIAL_WAKE_LOCK: 2750 return "PARTIAL_WAKE_LOCK "; 2751 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2752 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2753 case PowerManager.DOZE_WAKE_LOCK: 2754 return "DOZE_WAKE_LOCK "; 2755 default: 2756 return "??? "; 2757 } 2758 } 2759 2760 private String getLockFlagsString() { 2761 String result = ""; 2762 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2763 result += " ACQUIRE_CAUSES_WAKEUP"; 2764 } 2765 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2766 result += " ON_AFTER_RELEASE"; 2767 } 2768 return result; 2769 } 2770 } 2771 2772 private final class SuspendBlockerImpl implements SuspendBlocker { 2773 private final String mName; 2774 private final String mTraceName; 2775 private int mReferenceCount; 2776 2777 public SuspendBlockerImpl(String name) { 2778 mName = name; 2779 mTraceName = "SuspendBlocker (" + name + ")"; 2780 } 2781 2782 @Override 2783 protected void finalize() throws Throwable { 2784 try { 2785 if (mReferenceCount != 0) { 2786 Slog.wtf(TAG, "Suspend blocker \"" + mName 2787 + "\" was finalized without being released!"); 2788 mReferenceCount = 0; 2789 nativeReleaseSuspendBlocker(mName); 2790 Trace.asyncTraceEnd(Trace.TRACE_TAG_POWER, mTraceName, 0); 2791 } 2792 } finally { 2793 super.finalize(); 2794 } 2795 } 2796 2797 @Override 2798 public void acquire() { 2799 synchronized (this) { 2800 mReferenceCount += 1; 2801 if (mReferenceCount == 1) { 2802 if (DEBUG_SPEW) { 2803 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2804 } 2805 Trace.asyncTraceBegin(Trace.TRACE_TAG_POWER, mTraceName, 0); 2806 nativeAcquireSuspendBlocker(mName); 2807 } 2808 } 2809 } 2810 2811 @Override 2812 public void release() { 2813 synchronized (this) { 2814 mReferenceCount -= 1; 2815 if (mReferenceCount == 0) { 2816 if (DEBUG_SPEW) { 2817 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2818 } 2819 nativeReleaseSuspendBlocker(mName); 2820 Trace.asyncTraceEnd(Trace.TRACE_TAG_POWER, mTraceName, 0); 2821 } else if (mReferenceCount < 0) { 2822 Slog.wtf(TAG, "Suspend blocker \"" + mName 2823 + "\" was released without being acquired!", new Throwable()); 2824 mReferenceCount = 0; 2825 } 2826 } 2827 } 2828 2829 @Override 2830 public String toString() { 2831 synchronized (this) { 2832 return mName + ": ref count=" + mReferenceCount; 2833 } 2834 } 2835 } 2836 2837 private final class BinderService extends IPowerManager.Stub { 2838 @Override // Binder call 2839 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2840 String packageName, int uid) { 2841 if (uid < 0) { 2842 uid = Binder.getCallingUid(); 2843 } 2844 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2845 } 2846 2847 @Override // Binder call 2848 public void powerHint(int hintId, int data) { 2849 if (!mSystemReady) { 2850 // Service not ready yet, so who the heck cares about power hints, bah. 2851 return; 2852 } 2853 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2854 powerHintInternal(hintId, data); 2855 } 2856 2857 @Override // Binder call 2858 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2859 WorkSource ws, String historyTag) { 2860 if (lock == null) { 2861 throw new IllegalArgumentException("lock must not be null"); 2862 } 2863 if (packageName == null) { 2864 throw new IllegalArgumentException("packageName must not be null"); 2865 } 2866 PowerManager.validateWakeLockParameters(flags, tag); 2867 2868 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2869 if ((flags & PowerManager.DOZE_WAKE_LOCK) != 0) { 2870 mContext.enforceCallingOrSelfPermission( 2871 android.Manifest.permission.DEVICE_POWER, null); 2872 } 2873 if (ws != null && ws.size() != 0) { 2874 mContext.enforceCallingOrSelfPermission( 2875 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2876 } else { 2877 ws = null; 2878 } 2879 2880 final int uid = Binder.getCallingUid(); 2881 final int pid = Binder.getCallingPid(); 2882 final long ident = Binder.clearCallingIdentity(); 2883 try { 2884 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2885 } finally { 2886 Binder.restoreCallingIdentity(ident); 2887 } 2888 } 2889 2890 @Override // Binder call 2891 public void releaseWakeLock(IBinder lock, int flags) { 2892 if (lock == null) { 2893 throw new IllegalArgumentException("lock must not be null"); 2894 } 2895 2896 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2897 2898 final long ident = Binder.clearCallingIdentity(); 2899 try { 2900 releaseWakeLockInternal(lock, flags); 2901 } finally { 2902 Binder.restoreCallingIdentity(ident); 2903 } 2904 } 2905 2906 @Override // Binder call 2907 public void updateWakeLockUids(IBinder lock, int[] uids) { 2908 WorkSource ws = null; 2909 2910 if (uids != null) { 2911 ws = new WorkSource(); 2912 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2913 // one at a time? 2914 for (int i = 0; i < uids.length; i++) { 2915 ws.add(uids[i]); 2916 } 2917 } 2918 updateWakeLockWorkSource(lock, ws, null); 2919 } 2920 2921 @Override // Binder call 2922 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2923 if (lock == null) { 2924 throw new IllegalArgumentException("lock must not be null"); 2925 } 2926 2927 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2928 if (ws != null && ws.size() != 0) { 2929 mContext.enforceCallingOrSelfPermission( 2930 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2931 } else { 2932 ws = null; 2933 } 2934 2935 final int callingUid = Binder.getCallingUid(); 2936 final long ident = Binder.clearCallingIdentity(); 2937 try { 2938 updateWakeLockWorkSourceInternal(lock, ws, historyTag, callingUid); 2939 } finally { 2940 Binder.restoreCallingIdentity(ident); 2941 } 2942 } 2943 2944 @Override // Binder call 2945 public boolean isWakeLockLevelSupported(int level) { 2946 final long ident = Binder.clearCallingIdentity(); 2947 try { 2948 return isWakeLockLevelSupportedInternal(level); 2949 } finally { 2950 Binder.restoreCallingIdentity(ident); 2951 } 2952 } 2953 2954 @Override // Binder call 2955 public void userActivity(long eventTime, int event, int flags) { 2956 final long now = SystemClock.uptimeMillis(); 2957 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2958 != PackageManager.PERMISSION_GRANTED 2959 && mContext.checkCallingOrSelfPermission( 2960 android.Manifest.permission.USER_ACTIVITY) 2961 != PackageManager.PERMISSION_GRANTED) { 2962 // Once upon a time applications could call userActivity(). 2963 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2964 // request instead of throwing a SecurityException so we don't break old apps. 2965 synchronized (mLock) { 2966 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2967 mLastWarningAboutUserActivityPermission = now; 2968 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2969 + "caller does not have DEVICE_POWER or USER_ACTIVITY " 2970 + "permission. Please fix your app! " 2971 + " pid=" + Binder.getCallingPid() 2972 + " uid=" + Binder.getCallingUid()); 2973 } 2974 } 2975 return; 2976 } 2977 2978 if (eventTime > SystemClock.uptimeMillis()) { 2979 throw new IllegalArgumentException("event time must not be in the future"); 2980 } 2981 2982 final int uid = Binder.getCallingUid(); 2983 final long ident = Binder.clearCallingIdentity(); 2984 try { 2985 userActivityInternal(eventTime, event, flags, uid); 2986 } finally { 2987 Binder.restoreCallingIdentity(ident); 2988 } 2989 } 2990 2991 @Override // Binder call 2992 public void wakeUp(long eventTime) { 2993 if (eventTime > SystemClock.uptimeMillis()) { 2994 throw new IllegalArgumentException("event time must not be in the future"); 2995 } 2996 2997 mContext.enforceCallingOrSelfPermission( 2998 android.Manifest.permission.DEVICE_POWER, null); 2999 3000 final int uid = Binder.getCallingUid(); 3001 final long ident = Binder.clearCallingIdentity(); 3002 try { 3003 wakeUpInternal(eventTime, uid); 3004 } finally { 3005 Binder.restoreCallingIdentity(ident); 3006 } 3007 } 3008 3009 @Override // Binder call 3010 public void goToSleep(long eventTime, int reason, int flags) { 3011 if (eventTime > SystemClock.uptimeMillis()) { 3012 throw new IllegalArgumentException("event time must not be in the future"); 3013 } 3014 3015 mContext.enforceCallingOrSelfPermission( 3016 android.Manifest.permission.DEVICE_POWER, null); 3017 3018 final int uid = Binder.getCallingUid(); 3019 final long ident = Binder.clearCallingIdentity(); 3020 try { 3021 goToSleepInternal(eventTime, reason, flags, uid); 3022 } finally { 3023 Binder.restoreCallingIdentity(ident); 3024 } 3025 } 3026 3027 @Override // Binder call 3028 public void nap(long eventTime) { 3029 if (eventTime > SystemClock.uptimeMillis()) { 3030 throw new IllegalArgumentException("event time must not be in the future"); 3031 } 3032 3033 mContext.enforceCallingOrSelfPermission( 3034 android.Manifest.permission.DEVICE_POWER, null); 3035 3036 final int uid = Binder.getCallingUid(); 3037 final long ident = Binder.clearCallingIdentity(); 3038 try { 3039 napInternal(eventTime, uid); 3040 } finally { 3041 Binder.restoreCallingIdentity(ident); 3042 } 3043 } 3044 3045 @Override // Binder call 3046 public boolean isInteractive() { 3047 final long ident = Binder.clearCallingIdentity(); 3048 try { 3049 return isInteractiveInternal(); 3050 } finally { 3051 Binder.restoreCallingIdentity(ident); 3052 } 3053 } 3054 3055 @Override // Binder call 3056 public boolean isPowerSaveMode() { 3057 final long ident = Binder.clearCallingIdentity(); 3058 try { 3059 return isLowPowerModeInternal(); 3060 } finally { 3061 Binder.restoreCallingIdentity(ident); 3062 } 3063 } 3064 3065 @Override // Binder call 3066 public boolean setPowerSaveMode(boolean mode) { 3067 mContext.enforceCallingOrSelfPermission( 3068 android.Manifest.permission.DEVICE_POWER, null); 3069 final long ident = Binder.clearCallingIdentity(); 3070 try { 3071 return setLowPowerModeInternal(mode); 3072 } finally { 3073 Binder.restoreCallingIdentity(ident); 3074 } 3075 } 3076 3077 /** 3078 * Reboots the device. 3079 * 3080 * @param confirm If true, shows a reboot confirmation dialog. 3081 * @param reason The reason for the reboot, or null if none. 3082 * @param wait If true, this call waits for the reboot to complete and does not return. 3083 */ 3084 @Override // Binder call 3085 public void reboot(boolean confirm, String reason, boolean wait) { 3086 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 3087 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 3088 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 3089 } 3090 3091 final long ident = Binder.clearCallingIdentity(); 3092 try { 3093 shutdownOrRebootInternal(false, confirm, reason, wait); 3094 } finally { 3095 Binder.restoreCallingIdentity(ident); 3096 } 3097 } 3098 3099 /** 3100 * Shuts down the device. 3101 * 3102 * @param confirm If true, shows a shutdown confirmation dialog. 3103 * @param wait If true, this call waits for the shutdown to complete and does not return. 3104 */ 3105 @Override // Binder call 3106 public void shutdown(boolean confirm, boolean wait) { 3107 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 3108 3109 final long ident = Binder.clearCallingIdentity(); 3110 try { 3111 shutdownOrRebootInternal(true, confirm, null, wait); 3112 } finally { 3113 Binder.restoreCallingIdentity(ident); 3114 } 3115 } 3116 3117 /** 3118 * Crash the runtime (causing a complete restart of the Android framework). 3119 * Requires REBOOT permission. Mostly for testing. Should not return. 3120 */ 3121 @Override // Binder call 3122 public void crash(String message) { 3123 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 3124 3125 final long ident = Binder.clearCallingIdentity(); 3126 try { 3127 crashInternal(message); 3128 } finally { 3129 Binder.restoreCallingIdentity(ident); 3130 } 3131 } 3132 3133 /** 3134 * Set the setting that determines whether the device stays on when plugged in. 3135 * The argument is a bit string, with each bit specifying a power source that, 3136 * when the device is connected to that source, causes the device to stay on. 3137 * See {@link android.os.BatteryManager} for the list of power sources that 3138 * can be specified. Current values include 3139 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 3140 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 3141 * 3142 * Used by "adb shell svc power stayon ..." 3143 * 3144 * @param val an {@code int} containing the bits that specify which power sources 3145 * should cause the device to stay on. 3146 */ 3147 @Override // Binder call 3148 public void setStayOnSetting(int val) { 3149 mContext.enforceCallingOrSelfPermission( 3150 android.Manifest.permission.WRITE_SETTINGS, null); 3151 3152 final long ident = Binder.clearCallingIdentity(); 3153 try { 3154 setStayOnSettingInternal(val); 3155 } finally { 3156 Binder.restoreCallingIdentity(ident); 3157 } 3158 } 3159 3160 /** 3161 * Used by device administration to set the maximum screen off timeout. 3162 * 3163 * This method must only be called by the device administration policy manager. 3164 */ 3165 @Override // Binder call 3166 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 3167 final long ident = Binder.clearCallingIdentity(); 3168 try { 3169 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 3170 } finally { 3171 Binder.restoreCallingIdentity(ident); 3172 } 3173 } 3174 3175 /** 3176 * Used by the settings application and brightness control widgets to 3177 * temporarily override the current screen brightness setting so that the 3178 * user can observe the effect of an intended settings change without applying 3179 * it immediately. 3180 * 3181 * The override will be canceled when the setting value is next updated. 3182 * 3183 * @param brightness The overridden brightness. 3184 * 3185 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 3186 */ 3187 @Override // Binder call 3188 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 3189 mContext.enforceCallingOrSelfPermission( 3190 android.Manifest.permission.DEVICE_POWER, null); 3191 3192 final long ident = Binder.clearCallingIdentity(); 3193 try { 3194 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 3195 } finally { 3196 Binder.restoreCallingIdentity(ident); 3197 } 3198 } 3199 3200 /** 3201 * Used by the settings application and brightness control widgets to 3202 * temporarily override the current screen auto-brightness adjustment setting so that the 3203 * user can observe the effect of an intended settings change without applying 3204 * it immediately. 3205 * 3206 * The override will be canceled when the setting value is next updated. 3207 * 3208 * @param adj The overridden brightness, or Float.NaN to disable the override. 3209 * 3210 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 3211 */ 3212 @Override // Binder call 3213 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 3214 mContext.enforceCallingOrSelfPermission( 3215 android.Manifest.permission.DEVICE_POWER, null); 3216 3217 final long ident = Binder.clearCallingIdentity(); 3218 try { 3219 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 3220 } finally { 3221 Binder.restoreCallingIdentity(ident); 3222 } 3223 } 3224 3225 /** 3226 * Used by the phone application to make the attention LED flash when ringing. 3227 */ 3228 @Override // Binder call 3229 public void setAttentionLight(boolean on, int color) { 3230 mContext.enforceCallingOrSelfPermission( 3231 android.Manifest.permission.DEVICE_POWER, null); 3232 3233 final long ident = Binder.clearCallingIdentity(); 3234 try { 3235 setAttentionLightInternal(on, color); 3236 } finally { 3237 Binder.restoreCallingIdentity(ident); 3238 } 3239 } 3240 3241 @Override // Binder call 3242 public void boostScreenBrightness(long eventTime) { 3243 if (eventTime > SystemClock.uptimeMillis()) { 3244 throw new IllegalArgumentException("event time must not be in the future"); 3245 } 3246 3247 mContext.enforceCallingOrSelfPermission( 3248 android.Manifest.permission.DEVICE_POWER, null); 3249 3250 final int uid = Binder.getCallingUid(); 3251 final long ident = Binder.clearCallingIdentity(); 3252 try { 3253 boostScreenBrightnessInternal(eventTime, uid); 3254 } finally { 3255 Binder.restoreCallingIdentity(ident); 3256 } 3257 } 3258 3259 @Override // Binder call 3260 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3261 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 3262 != PackageManager.PERMISSION_GRANTED) { 3263 pw.println("Permission Denial: can't dump PowerManager from from pid=" 3264 + Binder.getCallingPid() 3265 + ", uid=" + Binder.getCallingUid()); 3266 return; 3267 } 3268 3269 final long ident = Binder.clearCallingIdentity(); 3270 try { 3271 dumpInternal(pw); 3272 } finally { 3273 Binder.restoreCallingIdentity(ident); 3274 } 3275 } 3276 } 3277 3278 private final class LocalService extends PowerManagerInternal { 3279 @Override 3280 public void setScreenBrightnessOverrideFromWindowManager(int screenBrightness) { 3281 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3282 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3283 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3284 } 3285 setScreenBrightnessOverrideFromWindowManagerInternal(screenBrightness); 3286 } 3287 3288 @Override 3289 public void setButtonBrightnessOverrideFromWindowManager(int screenBrightness) { 3290 // Do nothing. 3291 // Button lights are not currently supported in the new implementation. 3292 } 3293 3294 @Override 3295 public void setDozeOverrideFromDreamManager(int screenState, int screenBrightness) { 3296 switch (screenState) { 3297 case Display.STATE_UNKNOWN: 3298 case Display.STATE_OFF: 3299 case Display.STATE_DOZE: 3300 case Display.STATE_DOZE_SUSPEND: 3301 case Display.STATE_ON: 3302 break; 3303 default: 3304 screenState = Display.STATE_UNKNOWN; 3305 break; 3306 } 3307 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3308 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3309 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3310 } 3311 setDozeOverrideFromDreamManagerInternal(screenState, screenBrightness); 3312 } 3313 3314 @Override 3315 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 3316 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 3317 } 3318 3319 @Override 3320 public boolean getLowPowerModeEnabled() { 3321 synchronized (mLock) { 3322 return mLowPowerModeEnabled; 3323 } 3324 } 3325 3326 @Override 3327 public void registerLowPowerModeObserver(LowPowerModeListener listener) { 3328 synchronized (mLock) { 3329 mLowPowerModeListeners.add(listener); 3330 } 3331 } 3332 } 3333} 3334