PowerManagerService.java revision e333e674a758c39885d4d9779a1aad387fb0e6aa
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 1238 // Phase 1: Update wakefulness. 1239 // Loop because the wake lock and user activity computations are influenced 1240 // by changes in wakefulness. 1241 final long now = SystemClock.uptimeMillis(); 1242 int dirtyPhase2 = 0; 1243 for (;;) { 1244 int dirtyPhase1 = mDirty; 1245 dirtyPhase2 |= dirtyPhase1; 1246 mDirty = 0; 1247 1248 updateWakeLockSummaryLocked(dirtyPhase1); 1249 updateUserActivitySummaryLocked(now, dirtyPhase1); 1250 if (!updateWakefulnessLocked(dirtyPhase1)) { 1251 break; 1252 } 1253 } 1254 1255 // Phase 2: Update display power state. 1256 boolean displayBecameReady = updateDisplayPowerStateLocked(dirtyPhase2); 1257 1258 // Phase 3: Update dream state (depends on display ready signal). 1259 updateDreamLocked(dirtyPhase2, displayBecameReady); 1260 1261 // Phase 4: Send notifications, if needed. 1262 if (mDisplayReady) { 1263 finishInteractiveStateChangeLocked(); 1264 } 1265 1266 // Phase 5: Update suspend blocker. 1267 // Because we might release the last suspend blocker here, we need to make sure 1268 // we finished everything else first! 1269 updateSuspendBlockerLocked(); 1270 } finally { 1271 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1272 } 1273 } 1274 1275 /** 1276 * Updates the value of mIsPowered. 1277 * Sets DIRTY_IS_POWERED if a change occurred. 1278 */ 1279 private void updateIsPoweredLocked(int dirty) { 1280 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1281 final boolean wasPowered = mIsPowered; 1282 final int oldPlugType = mPlugType; 1283 final boolean oldLevelLow = mBatteryLevelLow; 1284 mIsPowered = mBatteryManagerInternal.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1285 mPlugType = mBatteryManagerInternal.getPlugType(); 1286 mBatteryLevel = mBatteryManagerInternal.getBatteryLevel(); 1287 mBatteryLevelLow = mBatteryManagerInternal.getBatteryLevelLow(); 1288 1289 if (DEBUG_SPEW) { 1290 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1291 + ", mIsPowered=" + mIsPowered 1292 + ", oldPlugType=" + oldPlugType 1293 + ", mPlugType=" + mPlugType 1294 + ", mBatteryLevel=" + mBatteryLevel); 1295 } 1296 1297 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1298 mDirty |= DIRTY_IS_POWERED; 1299 1300 // Update wireless dock detection state. 1301 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1302 mIsPowered, mPlugType, mBatteryLevel); 1303 1304 // Treat plugging and unplugging the devices as a user activity. 1305 // Users find it disconcerting when they plug or unplug the device 1306 // and it shuts off right away. 1307 // Some devices also wake the device when plugged or unplugged because 1308 // they don't have a charging LED. 1309 final long now = SystemClock.uptimeMillis(); 1310 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1311 dockedOnWirelessCharger)) { 1312 wakeUpNoUpdateLocked(now, Process.SYSTEM_UID); 1313 } 1314 userActivityNoUpdateLocked( 1315 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1316 1317 // Tell the notifier whether wireless charging has started so that 1318 // it can provide feedback to the user. 1319 if (dockedOnWirelessCharger) { 1320 mNotifier.onWirelessChargingStarted(); 1321 } 1322 } 1323 1324 if (wasPowered != mIsPowered || oldLevelLow != mBatteryLevelLow) { 1325 if (oldLevelLow != mBatteryLevelLow && !mBatteryLevelLow) { 1326 if (DEBUG_SPEW) { 1327 Slog.d(TAG, "updateIsPoweredLocked: resetting low power snooze"); 1328 } 1329 mAutoLowPowerModeSnoozing = false; 1330 } 1331 updateLowPowerModeLocked(); 1332 } 1333 } 1334 } 1335 1336 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1337 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1338 // Don't wake when powered unless configured to do so. 1339 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1340 return false; 1341 } 1342 1343 // Don't wake when undocked from wireless charger. 1344 // See WirelessChargerDetector for justification. 1345 if (wasPowered && !mIsPowered 1346 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1347 return false; 1348 } 1349 1350 // Don't wake when docked on wireless charger unless we are certain of it. 1351 // See WirelessChargerDetector for justification. 1352 if (!wasPowered && mIsPowered 1353 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1354 && !dockedOnWirelessCharger) { 1355 return false; 1356 } 1357 1358 // If already dreaming and becoming powered, then don't wake. 1359 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1360 return false; 1361 } 1362 1363 // Don't wake while theater mode is enabled. 1364 if (mTheaterModeEnabled && !mWakeUpWhenPluggedOrUnpluggedInTheaterModeConfig) { 1365 return false; 1366 } 1367 1368 // Otherwise wake up! 1369 return true; 1370 } 1371 1372 /** 1373 * Updates the value of mStayOn. 1374 * Sets DIRTY_STAY_ON if a change occurred. 1375 */ 1376 private void updateStayOnLocked(int dirty) { 1377 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1378 final boolean wasStayOn = mStayOn; 1379 if (mStayOnWhilePluggedInSetting != 0 1380 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1381 mStayOn = mBatteryManagerInternal.isPowered(mStayOnWhilePluggedInSetting); 1382 } else { 1383 mStayOn = false; 1384 } 1385 1386 if (mStayOn != wasStayOn) { 1387 mDirty |= DIRTY_STAY_ON; 1388 } 1389 } 1390 } 1391 1392 /** 1393 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1394 * Note that most wake-locks are ignored when the system is asleep. 1395 * 1396 * This function must have no other side-effects. 1397 */ 1398 @SuppressWarnings("deprecation") 1399 private void updateWakeLockSummaryLocked(int dirty) { 1400 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1401 mWakeLockSummary = 0; 1402 1403 final int numWakeLocks = mWakeLocks.size(); 1404 for (int i = 0; i < numWakeLocks; i++) { 1405 final WakeLock wakeLock = mWakeLocks.get(i); 1406 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1407 case PowerManager.PARTIAL_WAKE_LOCK: 1408 mWakeLockSummary |= WAKE_LOCK_CPU; 1409 break; 1410 case PowerManager.FULL_WAKE_LOCK: 1411 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1412 break; 1413 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1414 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1415 break; 1416 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1417 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1418 break; 1419 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1420 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1421 break; 1422 case PowerManager.DOZE_WAKE_LOCK: 1423 mWakeLockSummary |= WAKE_LOCK_DOZE; 1424 break; 1425 } 1426 } 1427 1428 // Cancel wake locks that make no sense based on the current state. 1429 if (mWakefulness != WAKEFULNESS_DOZING) { 1430 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1431 } 1432 if (mWakefulness == WAKEFULNESS_ASLEEP 1433 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1434 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1435 | WAKE_LOCK_BUTTON_BRIGHT); 1436 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1437 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1438 } 1439 } 1440 1441 // Infer implied wake locks where necessary based on the current state. 1442 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1443 if (mWakefulness == WAKEFULNESS_AWAKE) { 1444 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1445 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1446 mWakeLockSummary |= WAKE_LOCK_CPU; 1447 } 1448 } 1449 1450 if (DEBUG_SPEW) { 1451 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1452 + wakefulnessToString(mWakefulness) 1453 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1454 } 1455 } 1456 } 1457 1458 /** 1459 * Updates the value of mUserActivitySummary to summarize the user requested 1460 * state of the system such as whether the screen should be bright or dim. 1461 * Note that user activity is ignored when the system is asleep. 1462 * 1463 * This function must have no other side-effects. 1464 */ 1465 private void updateUserActivitySummaryLocked(long now, int dirty) { 1466 // Update the status of the user activity timeout timer. 1467 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1468 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1469 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1470 1471 long nextTimeout = 0; 1472 if (mWakefulness == WAKEFULNESS_AWAKE 1473 || mWakefulness == WAKEFULNESS_DREAMING 1474 || mWakefulness == WAKEFULNESS_DOZING) { 1475 final int sleepTimeout = getSleepTimeoutLocked(); 1476 final int screenOffTimeout = getScreenOffTimeoutLocked(sleepTimeout); 1477 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1478 1479 mUserActivitySummary = 0; 1480 if (mLastUserActivityTime >= mLastWakeTime) { 1481 nextTimeout = mLastUserActivityTime 1482 + screenOffTimeout - screenDimDuration; 1483 if (now < nextTimeout) { 1484 mUserActivitySummary = USER_ACTIVITY_SCREEN_BRIGHT; 1485 } else { 1486 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1487 if (now < nextTimeout) { 1488 mUserActivitySummary = USER_ACTIVITY_SCREEN_DIM; 1489 } 1490 } 1491 } 1492 if (mUserActivitySummary == 0 1493 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1494 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1495 if (now < nextTimeout) { 1496 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_BRIGHT) { 1497 mUserActivitySummary = USER_ACTIVITY_SCREEN_BRIGHT; 1498 } else if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DIM) { 1499 mUserActivitySummary = USER_ACTIVITY_SCREEN_DIM; 1500 } 1501 } 1502 } 1503 if (mUserActivitySummary == 0) { 1504 if (sleepTimeout >= 0) { 1505 final long anyUserActivity = Math.max(mLastUserActivityTime, 1506 mLastUserActivityTimeNoChangeLights); 1507 if (anyUserActivity >= mLastWakeTime) { 1508 nextTimeout = anyUserActivity + sleepTimeout; 1509 if (now < nextTimeout) { 1510 mUserActivitySummary = USER_ACTIVITY_SCREEN_DREAM; 1511 } 1512 } 1513 } else { 1514 mUserActivitySummary = USER_ACTIVITY_SCREEN_DREAM; 1515 nextTimeout = -1; 1516 } 1517 } 1518 if (mUserActivitySummary != 0 && nextTimeout >= 0) { 1519 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1520 msg.setAsynchronous(true); 1521 mHandler.sendMessageAtTime(msg, nextTimeout); 1522 } 1523 } else { 1524 mUserActivitySummary = 0; 1525 } 1526 1527 if (DEBUG_SPEW) { 1528 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1529 + wakefulnessToString(mWakefulness) 1530 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1531 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1532 } 1533 } 1534 } 1535 1536 /** 1537 * Called when a user activity timeout has occurred. 1538 * Simply indicates that something about user activity has changed so that the new 1539 * state can be recomputed when the power state is updated. 1540 * 1541 * This function must have no other side-effects besides setting the dirty 1542 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1543 */ 1544 private void handleUserActivityTimeout() { // runs on handler thread 1545 synchronized (mLock) { 1546 if (DEBUG_SPEW) { 1547 Slog.d(TAG, "handleUserActivityTimeout"); 1548 } 1549 1550 mDirty |= DIRTY_USER_ACTIVITY; 1551 updatePowerStateLocked(); 1552 } 1553 } 1554 1555 private int getSleepTimeoutLocked() { 1556 int timeout = mSleepTimeoutSetting; 1557 if (timeout <= 0) { 1558 return -1; 1559 } 1560 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1561 } 1562 1563 private int getScreenOffTimeoutLocked(int sleepTimeout) { 1564 int timeout = mScreenOffTimeoutSetting; 1565 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1566 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1567 } 1568 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1569 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1570 } 1571 if (sleepTimeout >= 0) { 1572 timeout = Math.min(timeout, sleepTimeout); 1573 } 1574 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1575 } 1576 1577 private int getScreenDimDurationLocked(int screenOffTimeout) { 1578 return Math.min(mMaximumScreenDimDurationConfig, 1579 (int)(screenOffTimeout * mMaximumScreenDimRatioConfig)); 1580 } 1581 1582 /** 1583 * Updates the wakefulness of the device. 1584 * 1585 * This is the function that decides whether the device should start dreaming 1586 * based on the current wake locks and user activity state. It may modify mDirty 1587 * if the wakefulness changes. 1588 * 1589 * Returns true if the wakefulness changed and we need to restart power state calculation. 1590 */ 1591 private boolean updateWakefulnessLocked(int dirty) { 1592 boolean changed = false; 1593 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1594 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1595 | DIRTY_DOCK_STATE)) != 0) { 1596 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1597 if (DEBUG_SPEW) { 1598 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1599 } 1600 final long time = SystemClock.uptimeMillis(); 1601 if (shouldNapAtBedTimeLocked()) { 1602 changed = napNoUpdateLocked(time, Process.SYSTEM_UID); 1603 } else { 1604 changed = goToSleepNoUpdateLocked(time, 1605 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0, Process.SYSTEM_UID); 1606 } 1607 } 1608 } 1609 return changed; 1610 } 1611 1612 /** 1613 * Returns true if the device should automatically nap and start dreaming when the user 1614 * activity timeout has expired and it's bedtime. 1615 */ 1616 private boolean shouldNapAtBedTimeLocked() { 1617 return mDreamsActivateOnSleepSetting 1618 || (mDreamsActivateOnDockSetting 1619 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1620 } 1621 1622 /** 1623 * Returns true if the device should go to sleep now. 1624 * Also used when exiting a dream to determine whether we should go back 1625 * to being fully awake or else go to sleep for good. 1626 */ 1627 private boolean isItBedTimeYetLocked() { 1628 return mBootCompleted && !isBeingKeptAwakeLocked(); 1629 } 1630 1631 /** 1632 * Returns true if the device is being kept awake by a wake lock, user activity 1633 * or the stay on while powered setting. We also keep the phone awake when 1634 * the proximity sensor returns a positive result so that the device does not 1635 * lock while in a phone call. This function only controls whether the device 1636 * will go to sleep or dream which is independent of whether it will be allowed 1637 * to suspend. 1638 */ 1639 private boolean isBeingKeptAwakeLocked() { 1640 return mStayOn 1641 || mProximityPositive 1642 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1643 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1644 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1645 } 1646 1647 /** 1648 * Determines whether to post a message to the sandman to update the dream state. 1649 */ 1650 private void updateDreamLocked(int dirty, boolean displayBecameReady) { 1651 if ((dirty & (DIRTY_WAKEFULNESS 1652 | DIRTY_USER_ACTIVITY 1653 | DIRTY_WAKE_LOCKS 1654 | DIRTY_BOOT_COMPLETED 1655 | DIRTY_SETTINGS 1656 | DIRTY_IS_POWERED 1657 | DIRTY_STAY_ON 1658 | DIRTY_PROXIMITY_POSITIVE 1659 | DIRTY_BATTERY_STATE)) != 0 || displayBecameReady) { 1660 if (mDisplayReady) { 1661 scheduleSandmanLocked(); 1662 } 1663 } 1664 } 1665 1666 private void scheduleSandmanLocked() { 1667 if (!mSandmanScheduled) { 1668 mSandmanScheduled = true; 1669 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1670 msg.setAsynchronous(true); 1671 mHandler.sendMessage(msg); 1672 } 1673 } 1674 1675 /** 1676 * Called when the device enters or exits a dreaming or dozing state. 1677 * 1678 * We do this asynchronously because we must call out of the power manager to start 1679 * the dream and we don't want to hold our lock while doing so. There is a risk that 1680 * the device will wake or go to sleep in the meantime so we have to handle that case. 1681 */ 1682 private void handleSandman() { // runs on handler thread 1683 // Handle preconditions. 1684 final boolean startDreaming; 1685 final int wakefulness; 1686 synchronized (mLock) { 1687 mSandmanScheduled = false; 1688 wakefulness = mWakefulness; 1689 if (mSandmanSummoned && mDisplayReady) { 1690 startDreaming = canDreamLocked() || canDozeLocked(); 1691 mSandmanSummoned = false; 1692 } else { 1693 startDreaming = false; 1694 } 1695 } 1696 1697 // Start dreaming if needed. 1698 // We only control the dream on the handler thread, so we don't need to worry about 1699 // concurrent attempts to start or stop the dream. 1700 final boolean isDreaming; 1701 if (mDreamManager != null) { 1702 // Restart the dream whenever the sandman is summoned. 1703 if (startDreaming) { 1704 mDreamManager.stopDream(false /*immediate*/); 1705 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1706 } 1707 isDreaming = mDreamManager.isDreaming(); 1708 } else { 1709 isDreaming = false; 1710 } 1711 1712 // Update dream state. 1713 synchronized (mLock) { 1714 // Remember the initial battery level when the dream started. 1715 if (startDreaming && isDreaming) { 1716 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1717 if (wakefulness == WAKEFULNESS_DOZING) { 1718 Slog.i(TAG, "Dozing..."); 1719 } else { 1720 Slog.i(TAG, "Dreaming..."); 1721 } 1722 } 1723 1724 // If preconditions changed, wait for the next iteration to determine 1725 // whether the dream should continue (or be restarted). 1726 if (mSandmanSummoned || mWakefulness != wakefulness) { 1727 return; // wait for next cycle 1728 } 1729 1730 // Determine whether the dream should continue. 1731 if (wakefulness == WAKEFULNESS_DREAMING) { 1732 if (isDreaming && canDreamLocked()) { 1733 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1734 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1735 - mDreamsBatteryLevelDrainCutoffConfig 1736 && !isBeingKeptAwakeLocked()) { 1737 // If the user activity timeout expired and the battery appears 1738 // to be draining faster than it is charging then stop dreaming 1739 // and go to sleep. 1740 Slog.i(TAG, "Stopping dream because the battery appears to " 1741 + "be draining faster than it is charging. " 1742 + "Battery level when dream started: " 1743 + mBatteryLevelWhenDreamStarted + "%. " 1744 + "Battery level now: " + mBatteryLevel + "%."); 1745 } else { 1746 return; // continue dreaming 1747 } 1748 } 1749 1750 // Dream has ended or will be stopped. Update the power state. 1751 if (isItBedTimeYetLocked()) { 1752 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1753 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0, Process.SYSTEM_UID); 1754 updatePowerStateLocked(); 1755 } else { 1756 wakeUpNoUpdateLocked(SystemClock.uptimeMillis(), Process.SYSTEM_UID); 1757 updatePowerStateLocked(); 1758 } 1759 } else if (wakefulness == WAKEFULNESS_DOZING) { 1760 if (isDreaming) { 1761 return; // continue dozing 1762 } 1763 1764 // Doze has ended or will be stopped. Update the power state. 1765 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis(), Process.SYSTEM_UID); 1766 updatePowerStateLocked(); 1767 } 1768 } 1769 1770 // Stop dream. 1771 if (isDreaming) { 1772 mDreamManager.stopDream(false /*immediate*/); 1773 } 1774 } 1775 1776 /** 1777 * Returns true if the device is allowed to dream in its current state. 1778 */ 1779 private boolean canDreamLocked() { 1780 if (mWakefulness != WAKEFULNESS_DREAMING 1781 || !mDreamsSupportedConfig 1782 || !mDreamsEnabledSetting 1783 || !mDisplayPowerRequest.isBrightOrDim() 1784 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1785 | USER_ACTIVITY_SCREEN_DIM | USER_ACTIVITY_SCREEN_DREAM)) == 0 1786 || !mBootCompleted) { 1787 return false; 1788 } 1789 if (!isBeingKeptAwakeLocked()) { 1790 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1791 return false; 1792 } 1793 if (!mIsPowered 1794 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1795 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1796 return false; 1797 } 1798 if (mIsPowered 1799 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1800 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1801 return false; 1802 } 1803 } 1804 return true; 1805 } 1806 1807 /** 1808 * Returns true if the device is allowed to doze in its current state. 1809 */ 1810 private boolean canDozeLocked() { 1811 return mWakefulness == WAKEFULNESS_DOZING; 1812 } 1813 1814 /** 1815 * Updates the display power state asynchronously. 1816 * When the update is finished, mDisplayReady will be set to true. The display 1817 * controller posts a message to tell us when the actual display power state 1818 * has been updated so we come back here to double-check and finish up. 1819 * 1820 * This function recalculates the display power state each time. 1821 * 1822 * @return True if the display became ready. 1823 */ 1824 private boolean updateDisplayPowerStateLocked(int dirty) { 1825 final boolean oldDisplayReady = mDisplayReady; 1826 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1827 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1828 | DIRTY_SETTINGS | DIRTY_SCREEN_BRIGHTNESS_BOOST)) != 0) { 1829 mDisplayPowerRequest.policy = getDesiredScreenPolicyLocked(); 1830 1831 // Handle screen brightness boost timeout. 1832 updateScreenBrightnessBoostLocked(); 1833 1834 // Determine appropriate screen brightness and auto-brightness adjustments. 1835 int screenBrightness = mScreenBrightnessSettingDefault; 1836 float screenAutoBrightnessAdjustment = 0.0f; 1837 boolean autoBrightness = (mScreenBrightnessModeSetting == 1838 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1839 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1840 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1841 autoBrightness = false; 1842 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1843 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1844 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1845 screenBrightness = mScreenBrightnessSetting; 1846 } 1847 if (autoBrightness) { 1848 screenBrightness = mScreenBrightnessSettingDefault; 1849 if (isValidAutoBrightnessAdjustment( 1850 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1851 screenAutoBrightnessAdjustment = 1852 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1853 } else if (isValidAutoBrightnessAdjustment( 1854 mScreenAutoBrightnessAdjustmentSetting)) { 1855 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1856 } 1857 } 1858 screenBrightness = Math.max(Math.min(screenBrightness, 1859 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1860 screenAutoBrightnessAdjustment = Math.max(Math.min( 1861 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1862 1863 // Update display power request. 1864 mDisplayPowerRequest.screenBrightness = screenBrightness; 1865 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1866 screenAutoBrightnessAdjustment; 1867 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1868 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1869 mDisplayPowerRequest.lowPowerMode = mLowPowerModeEnabled; 1870 mDisplayPowerRequest.boostScreenBrightness = mScreenBrightnessBoostInProgress; 1871 1872 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DOZE) { 1873 mDisplayPowerRequest.dozeScreenState = mDozeScreenStateOverrideFromDreamManager; 1874 mDisplayPowerRequest.dozeScreenBrightness = 1875 mDozeScreenBrightnessOverrideFromDreamManager; 1876 } else { 1877 mDisplayPowerRequest.dozeScreenState = Display.STATE_UNKNOWN; 1878 mDisplayPowerRequest.dozeScreenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 1879 } 1880 1881 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1882 mRequestWaitForNegativeProximity) && !mScreenBrightnessBoostInProgress; 1883 mRequestWaitForNegativeProximity = false; 1884 1885 if (DEBUG_SPEW) { 1886 Slog.d(TAG, "updateDisplayPowerStateLocked: mDisplayReady=" + mDisplayReady 1887 + ", policy=" + mDisplayPowerRequest.policy 1888 + ", mWakefulness=" + mWakefulness 1889 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1890 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1891 + ", mBootCompleted=" + mBootCompleted 1892 + ", mScreenBrightnessBoostInProgress=" 1893 + mScreenBrightnessBoostInProgress); 1894 } 1895 } 1896 return mDisplayReady && !oldDisplayReady; 1897 } 1898 1899 private void updateScreenBrightnessBoostLocked() { 1900 if (mScreenBrightnessBoostInProgress) { 1901 mHandler.removeMessages(MSG_SCREEN_BRIGHTNESS_BOOST_TIMEOUT); 1902 if (mLastScreenBrightnessBoostTime > mLastSleepTime) { 1903 final long boostTimeout = mLastScreenBrightnessBoostTime + 1904 SCREEN_BRIGHTNESS_BOOST_TIMEOUT; 1905 if (boostTimeout > SystemClock.uptimeMillis()) { 1906 Message msg = mHandler.obtainMessage(MSG_SCREEN_BRIGHTNESS_BOOST_TIMEOUT); 1907 msg.setAsynchronous(true); 1908 mHandler.sendMessageAtTime(msg, boostTimeout); 1909 return; 1910 } 1911 } 1912 mScreenBrightnessBoostInProgress = false; 1913 } 1914 } 1915 1916 private static boolean isValidBrightness(int value) { 1917 return value >= 0 && value <= 255; 1918 } 1919 1920 private static boolean isValidAutoBrightnessAdjustment(float value) { 1921 // Handles NaN by always returning false. 1922 return value >= -1.0f && value <= 1.0f; 1923 } 1924 1925 private int getDesiredScreenPolicyLocked() { 1926 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1927 return DisplayPowerRequest.POLICY_OFF; 1928 } 1929 1930 if (mWakefulness == WAKEFULNESS_DOZING) { 1931 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1932 return DisplayPowerRequest.POLICY_DOZE; 1933 } 1934 if (mDozeAfterScreenOffConfig) { 1935 return DisplayPowerRequest.POLICY_OFF; 1936 } 1937 // Fall through and preserve the current screen policy if not configured to 1938 // doze after screen off. This causes the screen off transition to be skipped. 1939 } 1940 1941 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1942 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1943 || !mBootCompleted) { 1944 return DisplayPowerRequest.POLICY_BRIGHT; 1945 } 1946 1947 return DisplayPowerRequest.POLICY_DIM; 1948 } 1949 1950 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1951 new DisplayManagerInternal.DisplayPowerCallbacks() { 1952 private int mDisplayState = Display.STATE_UNKNOWN; 1953 1954 @Override 1955 public void onStateChanged() { 1956 synchronized (mLock) { 1957 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1958 updatePowerStateLocked(); 1959 } 1960 } 1961 1962 @Override 1963 public void onProximityPositive() { 1964 synchronized (mLock) { 1965 mProximityPositive = true; 1966 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1967 updatePowerStateLocked(); 1968 } 1969 } 1970 1971 @Override 1972 public void onProximityNegative() { 1973 synchronized (mLock) { 1974 mProximityPositive = false; 1975 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1976 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1977 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1978 updatePowerStateLocked(); 1979 } 1980 } 1981 1982 @Override 1983 public void onDisplayStateChange(int state) { 1984 // This method is only needed to support legacy display blanking behavior 1985 // where the display's power state is coupled to suspend or to the power HAL. 1986 // The order of operations matters here. 1987 synchronized (mLock) { 1988 if (mDisplayState != state) { 1989 mDisplayState = state; 1990 if (state == Display.STATE_OFF) { 1991 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1992 setHalInteractiveModeLocked(false); 1993 } 1994 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1995 setHalAutoSuspendModeLocked(true); 1996 } 1997 } else { 1998 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1999 setHalAutoSuspendModeLocked(false); 2000 } 2001 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 2002 setHalInteractiveModeLocked(true); 2003 } 2004 } 2005 } 2006 } 2007 } 2008 2009 @Override 2010 public void acquireSuspendBlocker() { 2011 mDisplaySuspendBlocker.acquire(); 2012 } 2013 2014 @Override 2015 public void releaseSuspendBlocker() { 2016 mDisplaySuspendBlocker.release(); 2017 } 2018 2019 @Override 2020 public String toString() { 2021 synchronized (this) { 2022 return "state=" + Display.stateToString(mDisplayState); 2023 } 2024 } 2025 }; 2026 2027 private boolean shouldUseProximitySensorLocked() { 2028 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 2029 } 2030 2031 /** 2032 * Updates the suspend blocker that keeps the CPU alive. 2033 * 2034 * This function must have no other side-effects. 2035 */ 2036 private void updateSuspendBlockerLocked() { 2037 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 2038 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 2039 final boolean autoSuspend = !needDisplaySuspendBlocker; 2040 2041 // Disable auto-suspend if needed. 2042 if (!autoSuspend) { 2043 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 2044 setHalAutoSuspendModeLocked(false); 2045 } 2046 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 2047 setHalInteractiveModeLocked(true); 2048 } 2049 } 2050 2051 // First acquire suspend blockers if needed. 2052 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 2053 mWakeLockSuspendBlocker.acquire(); 2054 mHoldingWakeLockSuspendBlocker = true; 2055 } 2056 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 2057 mDisplaySuspendBlocker.acquire(); 2058 mHoldingDisplaySuspendBlocker = true; 2059 } 2060 2061 // Then release suspend blockers if needed. 2062 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 2063 mWakeLockSuspendBlocker.release(); 2064 mHoldingWakeLockSuspendBlocker = false; 2065 } 2066 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 2067 mDisplaySuspendBlocker.release(); 2068 mHoldingDisplaySuspendBlocker = false; 2069 } 2070 2071 // Enable auto-suspend if needed. 2072 if (autoSuspend) { 2073 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 2074 setHalInteractiveModeLocked(false); 2075 } 2076 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 2077 setHalAutoSuspendModeLocked(true); 2078 } 2079 } 2080 } 2081 2082 /** 2083 * Return true if we must keep a suspend blocker active on behalf of the display. 2084 * We do so if the screen is on or is in transition between states. 2085 */ 2086 private boolean needDisplaySuspendBlockerLocked() { 2087 if (!mDisplayReady) { 2088 return true; 2089 } 2090 if (mDisplayPowerRequest.isBrightOrDim()) { 2091 // If we asked for the screen to be on but it is off due to the proximity 2092 // sensor then we may suspend but only if the configuration allows it. 2093 // On some hardware it may not be safe to suspend because the proximity 2094 // sensor may not be correctly configured as a wake-up source. 2095 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 2096 || !mSuspendWhenScreenOffDueToProximityConfig) { 2097 return true; 2098 } 2099 } 2100 // Let the system suspend if the screen is off or dozing. 2101 return false; 2102 } 2103 2104 private void setHalAutoSuspendModeLocked(boolean enable) { 2105 if (enable != mHalAutoSuspendModeEnabled) { 2106 if (DEBUG) { 2107 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 2108 } 2109 mHalAutoSuspendModeEnabled = enable; 2110 Trace.traceBegin(Trace.TRACE_TAG_POWER, "setHalAutoSuspend(" + enable + ")"); 2111 try { 2112 nativeSetAutoSuspend(enable); 2113 } finally { 2114 Trace.traceEnd(Trace.TRACE_TAG_POWER); 2115 } 2116 } 2117 } 2118 2119 private void setHalInteractiveModeLocked(boolean enable) { 2120 if (enable != mHalInteractiveModeEnabled) { 2121 if (DEBUG) { 2122 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 2123 } 2124 mHalInteractiveModeEnabled = enable; 2125 Trace.traceBegin(Trace.TRACE_TAG_POWER, "setHalInteractive(" + enable + ")"); 2126 try { 2127 nativeSetInteractive(enable); 2128 } finally { 2129 Trace.traceEnd(Trace.TRACE_TAG_POWER); 2130 } 2131 } 2132 } 2133 2134 private boolean isInteractiveInternal() { 2135 synchronized (mLock) { 2136 return mInteractive; 2137 } 2138 } 2139 2140 private boolean isLowPowerModeInternal() { 2141 synchronized (mLock) { 2142 return mLowPowerModeEnabled; 2143 } 2144 } 2145 2146 private boolean setLowPowerModeInternal(boolean mode) { 2147 synchronized (mLock) { 2148 if (DEBUG) Slog.d(TAG, "setLowPowerModeInternal " + mode + " mIsPowered=" + mIsPowered); 2149 if (mIsPowered) { 2150 return false; 2151 } 2152 Settings.Global.putInt(mContext.getContentResolver(), 2153 Settings.Global.LOW_POWER_MODE, mode ? 1 : 0); 2154 mLowPowerModeSetting = mode; 2155 2156 if (mAutoLowPowerModeConfigured && mBatteryLevelLow) { 2157 if (mode && mAutoLowPowerModeSnoozing) { 2158 if (DEBUG_SPEW) { 2159 Slog.d(TAG, "setLowPowerModeInternal: clearing low power mode snooze"); 2160 } 2161 mAutoLowPowerModeSnoozing = false; 2162 } else if (!mode && !mAutoLowPowerModeSnoozing) { 2163 if (DEBUG_SPEW) { 2164 Slog.d(TAG, "setLowPowerModeInternal: snoozing low power mode"); 2165 } 2166 mAutoLowPowerModeSnoozing = true; 2167 } 2168 } 2169 2170 updateLowPowerModeLocked(); 2171 return true; 2172 } 2173 } 2174 2175 private void handleBatteryStateChangedLocked() { 2176 mDirty |= DIRTY_BATTERY_STATE; 2177 updatePowerStateLocked(); 2178 } 2179 2180 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 2181 final String reason, boolean wait) { 2182 if (mHandler == null || !mSystemReady) { 2183 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 2184 } 2185 2186 Runnable runnable = new Runnable() { 2187 @Override 2188 public void run() { 2189 synchronized (this) { 2190 if (shutdown) { 2191 ShutdownThread.shutdown(mContext, confirm); 2192 } else { 2193 ShutdownThread.reboot(mContext, reason, confirm); 2194 } 2195 } 2196 } 2197 }; 2198 2199 // ShutdownThread must run on a looper capable of displaying the UI. 2200 Message msg = Message.obtain(mHandler, runnable); 2201 msg.setAsynchronous(true); 2202 mHandler.sendMessage(msg); 2203 2204 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 2205 if (wait) { 2206 synchronized (runnable) { 2207 while (true) { 2208 try { 2209 runnable.wait(); 2210 } catch (InterruptedException e) { 2211 } 2212 } 2213 } 2214 } 2215 } 2216 2217 private void crashInternal(final String message) { 2218 Thread t = new Thread("PowerManagerService.crash()") { 2219 @Override 2220 public void run() { 2221 throw new RuntimeException(message); 2222 } 2223 }; 2224 try { 2225 t.start(); 2226 t.join(); 2227 } catch (InterruptedException e) { 2228 Slog.wtf(TAG, e); 2229 } 2230 } 2231 2232 private void setStayOnSettingInternal(int val) { 2233 Settings.Global.putInt(mContext.getContentResolver(), 2234 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 2235 } 2236 2237 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 2238 synchronized (mLock) { 2239 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 2240 mDirty |= DIRTY_SETTINGS; 2241 updatePowerStateLocked(); 2242 } 2243 } 2244 2245 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 2246 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 2247 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 2248 } 2249 2250 private void setAttentionLightInternal(boolean on, int color) { 2251 Light light; 2252 synchronized (mLock) { 2253 if (!mSystemReady) { 2254 return; 2255 } 2256 light = mAttentionLight; 2257 } 2258 2259 // Control light outside of lock. 2260 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 2261 } 2262 2263 private void boostScreenBrightnessInternal(long eventTime, int uid) { 2264 synchronized (mLock) { 2265 if (!mSystemReady || mWakefulness == WAKEFULNESS_ASLEEP 2266 || eventTime < mLastScreenBrightnessBoostTime) { 2267 return; 2268 } 2269 2270 Slog.i(TAG, "Brightness boost activated (uid " + uid +")..."); 2271 mLastScreenBrightnessBoostTime = eventTime; 2272 mScreenBrightnessBoostInProgress = true; 2273 mDirty |= DIRTY_SCREEN_BRIGHTNESS_BOOST; 2274 2275 userActivityNoUpdateLocked(eventTime, 2276 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, uid); 2277 updatePowerStateLocked(); 2278 } 2279 } 2280 2281 /** 2282 * Called when a screen brightness boost timeout has occurred. 2283 * 2284 * This function must have no other side-effects besides setting the dirty 2285 * bit and calling update power state. 2286 */ 2287 private void handleScreenBrightnessBoostTimeout() { // runs on handler thread 2288 synchronized (mLock) { 2289 if (DEBUG_SPEW) { 2290 Slog.d(TAG, "handleScreenBrightnessBoostTimeout"); 2291 } 2292 2293 mDirty |= DIRTY_SCREEN_BRIGHTNESS_BOOST; 2294 updatePowerStateLocked(); 2295 } 2296 } 2297 2298 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 2299 synchronized (mLock) { 2300 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 2301 mScreenBrightnessOverrideFromWindowManager = brightness; 2302 mDirty |= DIRTY_SETTINGS; 2303 updatePowerStateLocked(); 2304 } 2305 } 2306 } 2307 2308 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 2309 synchronized (mLock) { 2310 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 2311 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 2312 mDirty |= DIRTY_SETTINGS; 2313 updatePowerStateLocked(); 2314 } 2315 } 2316 } 2317 2318 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2319 synchronized (mLock) { 2320 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2321 mTemporaryScreenBrightnessSettingOverride = brightness; 2322 mDirty |= DIRTY_SETTINGS; 2323 updatePowerStateLocked(); 2324 } 2325 } 2326 } 2327 2328 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2329 synchronized (mLock) { 2330 // Note: This condition handles NaN because NaN is not equal to any other 2331 // value, including itself. 2332 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2333 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2334 mDirty |= DIRTY_SETTINGS; 2335 updatePowerStateLocked(); 2336 } 2337 } 2338 } 2339 2340 private void setDozeOverrideFromDreamManagerInternal( 2341 int screenState, int screenBrightness) { 2342 synchronized (mLock) { 2343 if (mDozeScreenStateOverrideFromDreamManager != screenState 2344 || mDozeScreenBrightnessOverrideFromDreamManager != screenBrightness) { 2345 mDozeScreenStateOverrideFromDreamManager = screenState; 2346 mDozeScreenBrightnessOverrideFromDreamManager = screenBrightness; 2347 mDirty |= DIRTY_SETTINGS; 2348 updatePowerStateLocked(); 2349 } 2350 } 2351 } 2352 2353 private void powerHintInternal(int hintId, int data) { 2354 nativeSendPowerHint(hintId, data); 2355 } 2356 2357 /** 2358 * Low-level function turn the device off immediately, without trying 2359 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2360 */ 2361 public static void lowLevelShutdown() { 2362 SystemProperties.set("sys.powerctl", "shutdown"); 2363 } 2364 2365 /** 2366 * Low-level function to reboot the device. On success, this 2367 * function doesn't return. If more than 20 seconds passes from 2368 * the time a reboot is requested (120 seconds for reboot to 2369 * recovery), this method returns. 2370 * 2371 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2372 */ 2373 public static void lowLevelReboot(String reason) { 2374 if (reason == null) { 2375 reason = ""; 2376 } 2377 long duration; 2378 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2379 // If we are rebooting to go into recovery, instead of 2380 // setting sys.powerctl directly we'll start the 2381 // pre-recovery service which will do some preparation for 2382 // recovery and then reboot for us. 2383 // 2384 // This preparation can take more than 20 seconds if 2385 // there's a very large update package, so lengthen the 2386 // timeout. 2387 SystemProperties.set("ctl.start", "pre-recovery"); 2388 duration = 120 * 1000L; 2389 } else { 2390 SystemProperties.set("sys.powerctl", "reboot," + reason); 2391 duration = 20 * 1000L; 2392 } 2393 try { 2394 Thread.sleep(duration); 2395 } catch (InterruptedException e) { 2396 Thread.currentThread().interrupt(); 2397 } 2398 } 2399 2400 @Override // Watchdog.Monitor implementation 2401 public void monitor() { 2402 // Grab and release lock for watchdog monitor to detect deadlocks. 2403 synchronized (mLock) { 2404 } 2405 } 2406 2407 private void dumpInternal(PrintWriter pw) { 2408 pw.println("POWER MANAGER (dumpsys power)\n"); 2409 2410 final WirelessChargerDetector wcd; 2411 synchronized (mLock) { 2412 pw.println("Power Manager State:"); 2413 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2414 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2415 pw.println(" mInteractive=" + mInteractive); 2416 pw.println(" mIsPowered=" + mIsPowered); 2417 pw.println(" mPlugType=" + mPlugType); 2418 pw.println(" mBatteryLevel=" + mBatteryLevel); 2419 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2420 pw.println(" mDockState=" + mDockState); 2421 pw.println(" mStayOn=" + mStayOn); 2422 pw.println(" mProximityPositive=" + mProximityPositive); 2423 pw.println(" mBootCompleted=" + mBootCompleted); 2424 pw.println(" mSystemReady=" + mSystemReady); 2425 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2426 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2427 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2428 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2429 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2430 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2431 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2432 pw.println(" mLowPowerModeEnabled=" + mLowPowerModeEnabled); 2433 pw.println(" mBatteryLevelLow=" + mBatteryLevelLow); 2434 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2435 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2436 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2437 pw.println(" mLastUserActivityTimeNoChangeLights=" 2438 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2439 pw.println(" mLastInteractivePowerHintTime=" 2440 + TimeUtils.formatUptime(mLastInteractivePowerHintTime)); 2441 pw.println(" mLastScreenBrightnessBoostTime=" 2442 + TimeUtils.formatUptime(mLastScreenBrightnessBoostTime)); 2443 pw.println(" mScreenBrightnessBoostInProgress=" 2444 + mScreenBrightnessBoostInProgress); 2445 pw.println(" mDisplayReady=" + mDisplayReady); 2446 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2447 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2448 2449 pw.println(); 2450 pw.println("Settings and Configuration:"); 2451 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2452 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2453 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2454 + mDecoupleHalInteractiveModeFromDisplayConfig); 2455 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2456 + mWakeUpWhenPluggedOrUnpluggedConfig); 2457 pw.println(" mWakeUpWhenPluggedOrUnpluggedInTheaterModeConfig=" 2458 + mWakeUpWhenPluggedOrUnpluggedInTheaterModeConfig); 2459 pw.println(" mTheaterModeEnabled=" 2460 + mTheaterModeEnabled); 2461 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2462 + mSuspendWhenScreenOffDueToProximityConfig); 2463 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2464 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2465 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2466 + mDreamsActivatedOnSleepByDefaultConfig); 2467 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2468 + mDreamsActivatedOnDockByDefaultConfig); 2469 pw.println(" mDreamsEnabledOnBatteryConfig=" 2470 + mDreamsEnabledOnBatteryConfig); 2471 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2472 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2473 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2474 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2475 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2476 + mDreamsBatteryLevelDrainCutoffConfig); 2477 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2478 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2479 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2480 pw.println(" mDozeAfterScreenOffConfig=" + mDozeAfterScreenOffConfig); 2481 pw.println(" mLowPowerModeSetting=" + mLowPowerModeSetting); 2482 pw.println(" mAutoLowPowerModeConfigured=" + mAutoLowPowerModeConfigured); 2483 pw.println(" mAutoLowPowerModeSnoozing=" + mAutoLowPowerModeSnoozing); 2484 pw.println(" mMinimumScreenOffTimeoutConfig=" + mMinimumScreenOffTimeoutConfig); 2485 pw.println(" mMaximumScreenDimDurationConfig=" + mMaximumScreenDimDurationConfig); 2486 pw.println(" mMaximumScreenDimRatioConfig=" + mMaximumScreenDimRatioConfig); 2487 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2488 pw.println(" mSleepTimeoutSetting=" + mSleepTimeoutSetting); 2489 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2490 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2491 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2492 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2493 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2494 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2495 + mScreenAutoBrightnessAdjustmentSetting); 2496 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2497 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2498 + mScreenBrightnessOverrideFromWindowManager); 2499 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2500 + mUserActivityTimeoutOverrideFromWindowManager); 2501 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2502 + mTemporaryScreenBrightnessSettingOverride); 2503 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2504 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2505 pw.println(" mDozeScreenStateOverrideFromDreamManager=" 2506 + mDozeScreenStateOverrideFromDreamManager); 2507 pw.println(" mDozeScreenBrightnessOverrideFromDreamManager=" 2508 + mDozeScreenBrightnessOverrideFromDreamManager); 2509 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2510 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2511 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2512 2513 final int sleepTimeout = getSleepTimeoutLocked(); 2514 final int screenOffTimeout = getScreenOffTimeoutLocked(sleepTimeout); 2515 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2516 pw.println(); 2517 pw.println("Sleep timeout: " + sleepTimeout + " ms"); 2518 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2519 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2520 2521 pw.println(); 2522 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2523 for (WakeLock wl : mWakeLocks) { 2524 pw.println(" " + wl); 2525 } 2526 2527 pw.println(); 2528 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2529 for (SuspendBlocker sb : mSuspendBlockers) { 2530 pw.println(" " + sb); 2531 } 2532 2533 pw.println(); 2534 pw.println("Display Power: " + mDisplayPowerCallbacks); 2535 2536 wcd = mWirelessChargerDetector; 2537 } 2538 2539 if (wcd != null) { 2540 wcd.dump(pw); 2541 } 2542 } 2543 2544 private SuspendBlocker createSuspendBlockerLocked(String name) { 2545 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2546 mSuspendBlockers.add(suspendBlocker); 2547 return suspendBlocker; 2548 } 2549 2550 private static String wakefulnessToString(int wakefulness) { 2551 switch (wakefulness) { 2552 case WAKEFULNESS_ASLEEP: 2553 return "Asleep"; 2554 case WAKEFULNESS_AWAKE: 2555 return "Awake"; 2556 case WAKEFULNESS_DREAMING: 2557 return "Dreaming"; 2558 case WAKEFULNESS_DOZING: 2559 return "Dozing"; 2560 default: 2561 return Integer.toString(wakefulness); 2562 } 2563 } 2564 2565 private static WorkSource copyWorkSource(WorkSource workSource) { 2566 return workSource != null ? new WorkSource(workSource) : null; 2567 } 2568 2569 private final class BatteryReceiver extends BroadcastReceiver { 2570 @Override 2571 public void onReceive(Context context, Intent intent) { 2572 synchronized (mLock) { 2573 handleBatteryStateChangedLocked(); 2574 } 2575 } 2576 } 2577 2578 private final class DreamReceiver extends BroadcastReceiver { 2579 @Override 2580 public void onReceive(Context context, Intent intent) { 2581 synchronized (mLock) { 2582 scheduleSandmanLocked(); 2583 } 2584 } 2585 } 2586 2587 private final class UserSwitchedReceiver extends BroadcastReceiver { 2588 @Override 2589 public void onReceive(Context context, Intent intent) { 2590 synchronized (mLock) { 2591 handleSettingsChangedLocked(); 2592 } 2593 } 2594 } 2595 2596 private final class DockReceiver extends BroadcastReceiver { 2597 @Override 2598 public void onReceive(Context context, Intent intent) { 2599 synchronized (mLock) { 2600 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2601 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2602 if (mDockState != dockState) { 2603 mDockState = dockState; 2604 mDirty |= DIRTY_DOCK_STATE; 2605 updatePowerStateLocked(); 2606 } 2607 } 2608 } 2609 } 2610 2611 private final class SettingsObserver extends ContentObserver { 2612 public SettingsObserver(Handler handler) { 2613 super(handler); 2614 } 2615 2616 @Override 2617 public void onChange(boolean selfChange, Uri uri) { 2618 synchronized (mLock) { 2619 handleSettingsChangedLocked(); 2620 } 2621 } 2622 } 2623 2624 /** 2625 * Handler for asynchronous operations performed by the power manager. 2626 */ 2627 private final class PowerManagerHandler extends Handler { 2628 public PowerManagerHandler(Looper looper) { 2629 super(looper, null, true /*async*/); 2630 } 2631 2632 @Override 2633 public void handleMessage(Message msg) { 2634 switch (msg.what) { 2635 case MSG_USER_ACTIVITY_TIMEOUT: 2636 handleUserActivityTimeout(); 2637 break; 2638 case MSG_SANDMAN: 2639 handleSandman(); 2640 break; 2641 case MSG_SCREEN_BRIGHTNESS_BOOST_TIMEOUT: 2642 handleScreenBrightnessBoostTimeout(); 2643 break; 2644 } 2645 } 2646 } 2647 2648 /** 2649 * Represents a wake lock that has been acquired by an application. 2650 */ 2651 private final class WakeLock implements IBinder.DeathRecipient { 2652 public final IBinder mLock; 2653 public int mFlags; 2654 public String mTag; 2655 public final String mPackageName; 2656 public WorkSource mWorkSource; 2657 public String mHistoryTag; 2658 public final int mOwnerUid; 2659 public final int mOwnerPid; 2660 public boolean mNotifiedAcquired; 2661 2662 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2663 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2664 mLock = lock; 2665 mFlags = flags; 2666 mTag = tag; 2667 mPackageName = packageName; 2668 mWorkSource = copyWorkSource(workSource); 2669 mHistoryTag = historyTag; 2670 mOwnerUid = ownerUid; 2671 mOwnerPid = ownerPid; 2672 } 2673 2674 @Override 2675 public void binderDied() { 2676 PowerManagerService.this.handleWakeLockDeath(this); 2677 } 2678 2679 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2680 int ownerUid, int ownerPid) { 2681 return mFlags == flags 2682 && mTag.equals(tag) 2683 && hasSameWorkSource(workSource) 2684 && mOwnerUid == ownerUid 2685 && mOwnerPid == ownerPid; 2686 } 2687 2688 public void updateProperties(int flags, String tag, String packageName, 2689 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2690 if (!mPackageName.equals(packageName)) { 2691 throw new IllegalStateException("Existing wake lock package name changed: " 2692 + mPackageName + " to " + packageName); 2693 } 2694 if (mOwnerUid != ownerUid) { 2695 throw new IllegalStateException("Existing wake lock uid changed: " 2696 + mOwnerUid + " to " + ownerUid); 2697 } 2698 if (mOwnerPid != ownerPid) { 2699 throw new IllegalStateException("Existing wake lock pid changed: " 2700 + mOwnerPid + " to " + ownerPid); 2701 } 2702 mFlags = flags; 2703 mTag = tag; 2704 updateWorkSource(workSource); 2705 mHistoryTag = historyTag; 2706 } 2707 2708 public boolean hasSameWorkSource(WorkSource workSource) { 2709 return Objects.equal(mWorkSource, workSource); 2710 } 2711 2712 public void updateWorkSource(WorkSource workSource) { 2713 mWorkSource = copyWorkSource(workSource); 2714 } 2715 2716 @Override 2717 public String toString() { 2718 return getLockLevelString() 2719 + " '" + mTag + "'" + getLockFlagsString() 2720 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2721 } 2722 2723 @SuppressWarnings("deprecation") 2724 private String getLockLevelString() { 2725 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2726 case PowerManager.FULL_WAKE_LOCK: 2727 return "FULL_WAKE_LOCK "; 2728 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2729 return "SCREEN_BRIGHT_WAKE_LOCK "; 2730 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2731 return "SCREEN_DIM_WAKE_LOCK "; 2732 case PowerManager.PARTIAL_WAKE_LOCK: 2733 return "PARTIAL_WAKE_LOCK "; 2734 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2735 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2736 case PowerManager.DOZE_WAKE_LOCK: 2737 return "DOZE_WAKE_LOCK "; 2738 default: 2739 return "??? "; 2740 } 2741 } 2742 2743 private String getLockFlagsString() { 2744 String result = ""; 2745 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2746 result += " ACQUIRE_CAUSES_WAKEUP"; 2747 } 2748 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2749 result += " ON_AFTER_RELEASE"; 2750 } 2751 return result; 2752 } 2753 } 2754 2755 private final class SuspendBlockerImpl implements SuspendBlocker { 2756 private final String mName; 2757 private final String mTraceName; 2758 private int mReferenceCount; 2759 2760 public SuspendBlockerImpl(String name) { 2761 mName = name; 2762 mTraceName = "SuspendBlocker (" + name + ")"; 2763 } 2764 2765 @Override 2766 protected void finalize() throws Throwable { 2767 try { 2768 if (mReferenceCount != 0) { 2769 Slog.wtf(TAG, "Suspend blocker \"" + mName 2770 + "\" was finalized without being released!"); 2771 mReferenceCount = 0; 2772 nativeReleaseSuspendBlocker(mName); 2773 Trace.asyncTraceEnd(Trace.TRACE_TAG_POWER, mTraceName, 0); 2774 } 2775 } finally { 2776 super.finalize(); 2777 } 2778 } 2779 2780 @Override 2781 public void acquire() { 2782 synchronized (this) { 2783 mReferenceCount += 1; 2784 if (mReferenceCount == 1) { 2785 if (DEBUG_SPEW) { 2786 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2787 } 2788 Trace.asyncTraceBegin(Trace.TRACE_TAG_POWER, mTraceName, 0); 2789 nativeAcquireSuspendBlocker(mName); 2790 } 2791 } 2792 } 2793 2794 @Override 2795 public void release() { 2796 synchronized (this) { 2797 mReferenceCount -= 1; 2798 if (mReferenceCount == 0) { 2799 if (DEBUG_SPEW) { 2800 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2801 } 2802 nativeReleaseSuspendBlocker(mName); 2803 Trace.asyncTraceEnd(Trace.TRACE_TAG_POWER, mTraceName, 0); 2804 } else if (mReferenceCount < 0) { 2805 Slog.wtf(TAG, "Suspend blocker \"" + mName 2806 + "\" was released without being acquired!", new Throwable()); 2807 mReferenceCount = 0; 2808 } 2809 } 2810 } 2811 2812 @Override 2813 public String toString() { 2814 synchronized (this) { 2815 return mName + ": ref count=" + mReferenceCount; 2816 } 2817 } 2818 } 2819 2820 private final class BinderService extends IPowerManager.Stub { 2821 @Override // Binder call 2822 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2823 String packageName, int uid) { 2824 if (uid < 0) { 2825 uid = Binder.getCallingUid(); 2826 } 2827 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2828 } 2829 2830 @Override // Binder call 2831 public void powerHint(int hintId, int data) { 2832 if (!mSystemReady) { 2833 // Service not ready yet, so who the heck cares about power hints, bah. 2834 return; 2835 } 2836 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2837 powerHintInternal(hintId, data); 2838 } 2839 2840 @Override // Binder call 2841 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2842 WorkSource ws, String historyTag) { 2843 if (lock == null) { 2844 throw new IllegalArgumentException("lock must not be null"); 2845 } 2846 if (packageName == null) { 2847 throw new IllegalArgumentException("packageName must not be null"); 2848 } 2849 PowerManager.validateWakeLockParameters(flags, tag); 2850 2851 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2852 if ((flags & PowerManager.DOZE_WAKE_LOCK) != 0) { 2853 mContext.enforceCallingOrSelfPermission( 2854 android.Manifest.permission.DEVICE_POWER, null); 2855 } 2856 if (ws != null && ws.size() != 0) { 2857 mContext.enforceCallingOrSelfPermission( 2858 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2859 } else { 2860 ws = null; 2861 } 2862 2863 final int uid = Binder.getCallingUid(); 2864 final int pid = Binder.getCallingPid(); 2865 final long ident = Binder.clearCallingIdentity(); 2866 try { 2867 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2868 } finally { 2869 Binder.restoreCallingIdentity(ident); 2870 } 2871 } 2872 2873 @Override // Binder call 2874 public void releaseWakeLock(IBinder lock, int flags) { 2875 if (lock == null) { 2876 throw new IllegalArgumentException("lock must not be null"); 2877 } 2878 2879 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2880 2881 final long ident = Binder.clearCallingIdentity(); 2882 try { 2883 releaseWakeLockInternal(lock, flags); 2884 } finally { 2885 Binder.restoreCallingIdentity(ident); 2886 } 2887 } 2888 2889 @Override // Binder call 2890 public void updateWakeLockUids(IBinder lock, int[] uids) { 2891 WorkSource ws = null; 2892 2893 if (uids != null) { 2894 ws = new WorkSource(); 2895 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2896 // one at a time? 2897 for (int i = 0; i < uids.length; i++) { 2898 ws.add(uids[i]); 2899 } 2900 } 2901 updateWakeLockWorkSource(lock, ws, null); 2902 } 2903 2904 @Override // Binder call 2905 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2906 if (lock == null) { 2907 throw new IllegalArgumentException("lock must not be null"); 2908 } 2909 2910 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2911 if (ws != null && ws.size() != 0) { 2912 mContext.enforceCallingOrSelfPermission( 2913 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2914 } else { 2915 ws = null; 2916 } 2917 2918 final int callingUid = Binder.getCallingUid(); 2919 final long ident = Binder.clearCallingIdentity(); 2920 try { 2921 updateWakeLockWorkSourceInternal(lock, ws, historyTag, callingUid); 2922 } finally { 2923 Binder.restoreCallingIdentity(ident); 2924 } 2925 } 2926 2927 @Override // Binder call 2928 public boolean isWakeLockLevelSupported(int level) { 2929 final long ident = Binder.clearCallingIdentity(); 2930 try { 2931 return isWakeLockLevelSupportedInternal(level); 2932 } finally { 2933 Binder.restoreCallingIdentity(ident); 2934 } 2935 } 2936 2937 @Override // Binder call 2938 public void userActivity(long eventTime, int event, int flags) { 2939 final long now = SystemClock.uptimeMillis(); 2940 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2941 != PackageManager.PERMISSION_GRANTED 2942 && mContext.checkCallingOrSelfPermission( 2943 android.Manifest.permission.USER_ACTIVITY) 2944 != PackageManager.PERMISSION_GRANTED) { 2945 // Once upon a time applications could call userActivity(). 2946 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2947 // request instead of throwing a SecurityException so we don't break old apps. 2948 synchronized (mLock) { 2949 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2950 mLastWarningAboutUserActivityPermission = now; 2951 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2952 + "caller does not have DEVICE_POWER or USER_ACTIVITY " 2953 + "permission. Please fix your app! " 2954 + " pid=" + Binder.getCallingPid() 2955 + " uid=" + Binder.getCallingUid()); 2956 } 2957 } 2958 return; 2959 } 2960 2961 if (eventTime > SystemClock.uptimeMillis()) { 2962 throw new IllegalArgumentException("event time must not be in the future"); 2963 } 2964 2965 final int uid = Binder.getCallingUid(); 2966 final long ident = Binder.clearCallingIdentity(); 2967 try { 2968 userActivityInternal(eventTime, event, flags, uid); 2969 } finally { 2970 Binder.restoreCallingIdentity(ident); 2971 } 2972 } 2973 2974 @Override // Binder call 2975 public void wakeUp(long eventTime) { 2976 if (eventTime > SystemClock.uptimeMillis()) { 2977 throw new IllegalArgumentException("event time must not be in the future"); 2978 } 2979 2980 mContext.enforceCallingOrSelfPermission( 2981 android.Manifest.permission.DEVICE_POWER, null); 2982 2983 final int uid = Binder.getCallingUid(); 2984 final long ident = Binder.clearCallingIdentity(); 2985 try { 2986 wakeUpInternal(eventTime, uid); 2987 } finally { 2988 Binder.restoreCallingIdentity(ident); 2989 } 2990 } 2991 2992 @Override // Binder call 2993 public void goToSleep(long eventTime, int reason, int flags) { 2994 if (eventTime > SystemClock.uptimeMillis()) { 2995 throw new IllegalArgumentException("event time must not be in the future"); 2996 } 2997 2998 mContext.enforceCallingOrSelfPermission( 2999 android.Manifest.permission.DEVICE_POWER, null); 3000 3001 final int uid = Binder.getCallingUid(); 3002 final long ident = Binder.clearCallingIdentity(); 3003 try { 3004 goToSleepInternal(eventTime, reason, flags, uid); 3005 } finally { 3006 Binder.restoreCallingIdentity(ident); 3007 } 3008 } 3009 3010 @Override // Binder call 3011 public void nap(long eventTime) { 3012 if (eventTime > SystemClock.uptimeMillis()) { 3013 throw new IllegalArgumentException("event time must not be in the future"); 3014 } 3015 3016 mContext.enforceCallingOrSelfPermission( 3017 android.Manifest.permission.DEVICE_POWER, null); 3018 3019 final int uid = Binder.getCallingUid(); 3020 final long ident = Binder.clearCallingIdentity(); 3021 try { 3022 napInternal(eventTime, uid); 3023 } finally { 3024 Binder.restoreCallingIdentity(ident); 3025 } 3026 } 3027 3028 @Override // Binder call 3029 public boolean isInteractive() { 3030 final long ident = Binder.clearCallingIdentity(); 3031 try { 3032 return isInteractiveInternal(); 3033 } finally { 3034 Binder.restoreCallingIdentity(ident); 3035 } 3036 } 3037 3038 @Override // Binder call 3039 public boolean isPowerSaveMode() { 3040 final long ident = Binder.clearCallingIdentity(); 3041 try { 3042 return isLowPowerModeInternal(); 3043 } finally { 3044 Binder.restoreCallingIdentity(ident); 3045 } 3046 } 3047 3048 @Override // Binder call 3049 public boolean setPowerSaveMode(boolean mode) { 3050 mContext.enforceCallingOrSelfPermission( 3051 android.Manifest.permission.DEVICE_POWER, null); 3052 final long ident = Binder.clearCallingIdentity(); 3053 try { 3054 return setLowPowerModeInternal(mode); 3055 } finally { 3056 Binder.restoreCallingIdentity(ident); 3057 } 3058 } 3059 3060 /** 3061 * Reboots the device. 3062 * 3063 * @param confirm If true, shows a reboot confirmation dialog. 3064 * @param reason The reason for the reboot, or null if none. 3065 * @param wait If true, this call waits for the reboot to complete and does not return. 3066 */ 3067 @Override // Binder call 3068 public void reboot(boolean confirm, String reason, boolean wait) { 3069 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 3070 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 3071 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 3072 } 3073 3074 final long ident = Binder.clearCallingIdentity(); 3075 try { 3076 shutdownOrRebootInternal(false, confirm, reason, wait); 3077 } finally { 3078 Binder.restoreCallingIdentity(ident); 3079 } 3080 } 3081 3082 /** 3083 * Shuts down the device. 3084 * 3085 * @param confirm If true, shows a shutdown confirmation dialog. 3086 * @param wait If true, this call waits for the shutdown to complete and does not return. 3087 */ 3088 @Override // Binder call 3089 public void shutdown(boolean confirm, boolean wait) { 3090 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 3091 3092 final long ident = Binder.clearCallingIdentity(); 3093 try { 3094 shutdownOrRebootInternal(true, confirm, null, wait); 3095 } finally { 3096 Binder.restoreCallingIdentity(ident); 3097 } 3098 } 3099 3100 /** 3101 * Crash the runtime (causing a complete restart of the Android framework). 3102 * Requires REBOOT permission. Mostly for testing. Should not return. 3103 */ 3104 @Override // Binder call 3105 public void crash(String message) { 3106 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 3107 3108 final long ident = Binder.clearCallingIdentity(); 3109 try { 3110 crashInternal(message); 3111 } finally { 3112 Binder.restoreCallingIdentity(ident); 3113 } 3114 } 3115 3116 /** 3117 * Set the setting that determines whether the device stays on when plugged in. 3118 * The argument is a bit string, with each bit specifying a power source that, 3119 * when the device is connected to that source, causes the device to stay on. 3120 * See {@link android.os.BatteryManager} for the list of power sources that 3121 * can be specified. Current values include 3122 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 3123 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 3124 * 3125 * Used by "adb shell svc power stayon ..." 3126 * 3127 * @param val an {@code int} containing the bits that specify which power sources 3128 * should cause the device to stay on. 3129 */ 3130 @Override // Binder call 3131 public void setStayOnSetting(int val) { 3132 mContext.enforceCallingOrSelfPermission( 3133 android.Manifest.permission.WRITE_SETTINGS, null); 3134 3135 final long ident = Binder.clearCallingIdentity(); 3136 try { 3137 setStayOnSettingInternal(val); 3138 } finally { 3139 Binder.restoreCallingIdentity(ident); 3140 } 3141 } 3142 3143 /** 3144 * Used by device administration to set the maximum screen off timeout. 3145 * 3146 * This method must only be called by the device administration policy manager. 3147 */ 3148 @Override // Binder call 3149 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 3150 final long ident = Binder.clearCallingIdentity(); 3151 try { 3152 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 3153 } finally { 3154 Binder.restoreCallingIdentity(ident); 3155 } 3156 } 3157 3158 /** 3159 * Used by the settings application and brightness control widgets to 3160 * temporarily override the current screen brightness setting so that the 3161 * user can observe the effect of an intended settings change without applying 3162 * it immediately. 3163 * 3164 * The override will be canceled when the setting value is next updated. 3165 * 3166 * @param brightness The overridden brightness. 3167 * 3168 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 3169 */ 3170 @Override // Binder call 3171 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 3172 mContext.enforceCallingOrSelfPermission( 3173 android.Manifest.permission.DEVICE_POWER, null); 3174 3175 final long ident = Binder.clearCallingIdentity(); 3176 try { 3177 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 3178 } finally { 3179 Binder.restoreCallingIdentity(ident); 3180 } 3181 } 3182 3183 /** 3184 * Used by the settings application and brightness control widgets to 3185 * temporarily override the current screen auto-brightness adjustment setting so that the 3186 * user can observe the effect of an intended settings change without applying 3187 * it immediately. 3188 * 3189 * The override will be canceled when the setting value is next updated. 3190 * 3191 * @param adj The overridden brightness, or Float.NaN to disable the override. 3192 * 3193 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 3194 */ 3195 @Override // Binder call 3196 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 3197 mContext.enforceCallingOrSelfPermission( 3198 android.Manifest.permission.DEVICE_POWER, null); 3199 3200 final long ident = Binder.clearCallingIdentity(); 3201 try { 3202 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 3203 } finally { 3204 Binder.restoreCallingIdentity(ident); 3205 } 3206 } 3207 3208 /** 3209 * Used by the phone application to make the attention LED flash when ringing. 3210 */ 3211 @Override // Binder call 3212 public void setAttentionLight(boolean on, int color) { 3213 mContext.enforceCallingOrSelfPermission( 3214 android.Manifest.permission.DEVICE_POWER, null); 3215 3216 final long ident = Binder.clearCallingIdentity(); 3217 try { 3218 setAttentionLightInternal(on, color); 3219 } finally { 3220 Binder.restoreCallingIdentity(ident); 3221 } 3222 } 3223 3224 @Override // Binder call 3225 public void boostScreenBrightness(long eventTime) { 3226 if (eventTime > SystemClock.uptimeMillis()) { 3227 throw new IllegalArgumentException("event time must not be in the future"); 3228 } 3229 3230 mContext.enforceCallingOrSelfPermission( 3231 android.Manifest.permission.DEVICE_POWER, null); 3232 3233 final int uid = Binder.getCallingUid(); 3234 final long ident = Binder.clearCallingIdentity(); 3235 try { 3236 boostScreenBrightnessInternal(eventTime, uid); 3237 } finally { 3238 Binder.restoreCallingIdentity(ident); 3239 } 3240 } 3241 3242 @Override // Binder call 3243 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3244 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 3245 != PackageManager.PERMISSION_GRANTED) { 3246 pw.println("Permission Denial: can't dump PowerManager from from pid=" 3247 + Binder.getCallingPid() 3248 + ", uid=" + Binder.getCallingUid()); 3249 return; 3250 } 3251 3252 final long ident = Binder.clearCallingIdentity(); 3253 try { 3254 dumpInternal(pw); 3255 } finally { 3256 Binder.restoreCallingIdentity(ident); 3257 } 3258 } 3259 } 3260 3261 private final class LocalService extends PowerManagerInternal { 3262 @Override 3263 public void setScreenBrightnessOverrideFromWindowManager(int screenBrightness) { 3264 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3265 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3266 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3267 } 3268 setScreenBrightnessOverrideFromWindowManagerInternal(screenBrightness); 3269 } 3270 3271 @Override 3272 public void setButtonBrightnessOverrideFromWindowManager(int screenBrightness) { 3273 // Do nothing. 3274 // Button lights are not currently supported in the new implementation. 3275 } 3276 3277 @Override 3278 public void setDozeOverrideFromDreamManager(int screenState, int screenBrightness) { 3279 switch (screenState) { 3280 case Display.STATE_UNKNOWN: 3281 case Display.STATE_OFF: 3282 case Display.STATE_DOZE: 3283 case Display.STATE_DOZE_SUSPEND: 3284 case Display.STATE_ON: 3285 break; 3286 default: 3287 screenState = Display.STATE_UNKNOWN; 3288 break; 3289 } 3290 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3291 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3292 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3293 } 3294 setDozeOverrideFromDreamManagerInternal(screenState, screenBrightness); 3295 } 3296 3297 @Override 3298 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 3299 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 3300 } 3301 3302 @Override 3303 public boolean getLowPowerModeEnabled() { 3304 synchronized (mLock) { 3305 return mLowPowerModeEnabled; 3306 } 3307 } 3308 3309 @Override 3310 public void registerLowPowerModeObserver(LowPowerModeListener listener) { 3311 synchronized (mLock) { 3312 mLowPowerModeListeners.add(listener); 3313 } 3314 } 3315 } 3316} 3317