PowerManagerService.java revision 0a571123544058578b4ef1558c276a4050519652
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.power; 18 19import com.android.internal.app.IAppOpsService; 20import com.android.internal.app.IBatteryStats; 21import com.android.internal.os.BackgroundThread; 22import com.android.server.EventLogTags; 23import com.android.server.LocalServices; 24import com.android.server.ServiceThread; 25import com.android.server.am.BatteryStatsService; 26import com.android.server.lights.Light; 27import com.android.server.lights.LightsManager; 28import com.android.server.Watchdog; 29 30import android.Manifest; 31import android.content.BroadcastReceiver; 32import android.content.ContentResolver; 33import android.content.Context; 34import android.content.Intent; 35import android.content.IntentFilter; 36import android.content.pm.PackageManager; 37import android.content.res.Resources; 38import android.database.ContentObserver; 39import android.hardware.SensorManager; 40import android.hardware.SystemSensorManager; 41import android.hardware.display.DisplayManagerInternal; 42import android.hardware.display.DisplayManagerInternal.DisplayPowerRequest; 43import android.net.Uri; 44import android.os.BatteryManager; 45import android.os.BatteryManagerInternal; 46import android.os.Binder; 47import android.os.Handler; 48import android.os.IBinder; 49import android.os.IPowerManager; 50import android.os.Looper; 51import android.os.Message; 52import android.os.PowerManager; 53import android.os.PowerManagerInternal; 54import android.os.Process; 55import android.os.RemoteException; 56import android.os.SystemClock; 57import android.os.SystemProperties; 58import android.os.SystemService; 59import android.os.Trace; 60import android.os.UserHandle; 61import android.os.WorkSource; 62import android.provider.Settings; 63import android.service.dreams.DreamManagerInternal; 64import android.util.EventLog; 65import android.util.Log; 66import android.util.Slog; 67import android.util.TimeUtils; 68import android.view.Display; 69import android.view.WindowManagerPolicy; 70 71import java.io.FileDescriptor; 72import java.io.PrintWriter; 73import java.util.ArrayList; 74 75import libcore.util.Objects; 76 77/** 78 * The power manager service is responsible for coordinating power management 79 * functions on the device. 80 */ 81public final class PowerManagerService extends com.android.server.SystemService 82 implements Watchdog.Monitor { 83 private static final String TAG = "PowerManagerService"; 84 85 private static final boolean DEBUG = false; 86 private static final boolean DEBUG_SPEW = DEBUG && true; 87 88 // Message: Sent when a user activity timeout occurs to update the power state. 89 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 90 // Message: Sent when the device enters or exits a dreaming or dozing state. 91 private static final int MSG_SANDMAN = 2; 92 // Message: Sent when the screen on blocker is released. 93 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 94 // Message: Sent to poll whether the boot animation has terminated. 95 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 96 97 // Dirty bit: mWakeLocks changed 98 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 99 // Dirty bit: mWakefulness changed 100 private static final int DIRTY_WAKEFULNESS = 1 << 1; 101 // Dirty bit: user activity was poked or may have timed out 102 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 103 // Dirty bit: actual display power state was updated asynchronously 104 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 105 // Dirty bit: mBootCompleted changed 106 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 107 // Dirty bit: settings changed 108 private static final int DIRTY_SETTINGS = 1 << 5; 109 // Dirty bit: mIsPowered changed 110 private static final int DIRTY_IS_POWERED = 1 << 6; 111 // Dirty bit: mStayOn changed 112 private static final int DIRTY_STAY_ON = 1 << 7; 113 // Dirty bit: battery state changed 114 private static final int DIRTY_BATTERY_STATE = 1 << 8; 115 // Dirty bit: proximity state changed 116 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 117 // Dirty bit: screen on blocker state became held or unheld 118 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 119 // Dirty bit: dock state changed 120 private static final int DIRTY_DOCK_STATE = 1 << 11; 121 122 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 123 // The screen should be off or in the process of being turned off by the display controller. 124 // The device typically passes through the dozing state first. 125 private static final int WAKEFULNESS_ASLEEP = 0; 126 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 127 // When the user activity timeout expires, the device may start dreaming or go to sleep. 128 private static final int WAKEFULNESS_AWAKE = 1; 129 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 130 // which ends the dream. The device goes to sleep when goToSleep() is called, when 131 // the dream ends or when unplugged. 132 // User activity may brighten the screen but does not end the dream. 133 private static final int WAKEFULNESS_DREAMING = 2; 134 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 135 // low-power "doze" dream to run which keeps the display on but lets the application 136 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 137 // The device fully goes to sleep if the dream cannot be started or ends on its own. 138 private static final int WAKEFULNESS_DOZING = 3; 139 140 // Summarizes the state of all active wakelocks. 141 private static final int WAKE_LOCK_CPU = 1 << 0; 142 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 143 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 144 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 145 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 146 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 147 private static final int WAKE_LOCK_DOZE = 1 << 6; 148 149 // Summarizes the user activity state. 150 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 151 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 152 153 // Default timeout in milliseconds. This is only used until the settings 154 // provider populates the actual default value (R.integer.def_screen_off_timeout). 155 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 156 157 // The name of the boot animation service in init.rc. 158 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 159 160 // Poll interval in milliseconds for watching boot animation finished. 161 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 162 163 // Power hints defined in hardware/libhardware/include/hardware/power.h. 164 private static final int POWER_HINT_INTERACTION = 2; 165 private static final int POWER_HINT_LOW_POWER = 5; 166 167 private final Context mContext; 168 private final ServiceThread mHandlerThread; 169 private final PowerManagerHandler mHandler; 170 171 private LightsManager mLightsManager; 172 private BatteryManagerInternal mBatteryManagerInternal; 173 private DisplayManagerInternal mDisplayManagerInternal; 174 private IBatteryStats mBatteryStats; 175 private IAppOpsService mAppOps; 176 private WindowManagerPolicy mPolicy; 177 private Notifier mNotifier; 178 private WirelessChargerDetector mWirelessChargerDetector; 179 private SettingsObserver mSettingsObserver; 180 private DreamManagerInternal mDreamManager; 181 private Light mAttentionLight; 182 183 private final Object mLock = new Object(); 184 185 // A bitfield that indicates what parts of the power state have 186 // changed and need to be recalculated. 187 private int mDirty; 188 189 // Indicates whether the device is awake or asleep or somewhere in between. 190 // This is distinct from the screen power state, which is managed separately. 191 private int mWakefulness; 192 193 // True if the sandman has just been summoned for the first time since entering the 194 // dreaming or dozing state. Indicates whether a new dream should begin. 195 private boolean mSandmanSummoned; 196 197 // True if MSG_SANDMAN has been scheduled. 198 private boolean mSandmanScheduled; 199 200 // Table of all suspend blockers. 201 // There should only be a few of these. 202 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 203 204 // Table of all wake locks acquired by applications. 205 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 206 207 // A bitfield that summarizes the state of all active wakelocks. 208 private int mWakeLockSummary; 209 210 // True if the device is in an interactive state. 211 private boolean mInteractive; 212 private boolean mInteractiveChanging; 213 214 // If true, instructs the display controller to wait for the proximity sensor to 215 // go negative before turning the screen on. 216 private boolean mRequestWaitForNegativeProximity; 217 218 // Timestamp of the last time the device was awoken or put to sleep. 219 private long mLastWakeTime; 220 private long mLastSleepTime; 221 222 // Timestamp of the last call to user activity. 223 private long mLastUserActivityTime; 224 private long mLastUserActivityTimeNoChangeLights; 225 226 // Timestamp of last interactive power hint. 227 private long mLastInteractivePowerHintTime; 228 229 // A bitfield that summarizes the effect of the user activity timer. 230 // A zero value indicates that the user activity timer has expired. 231 private int mUserActivitySummary; 232 233 // The desired display power state. The actual state may lag behind the 234 // requested because it is updated asynchronously by the display power controller. 235 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 236 237 // True if the display power state has been fully applied, which means the display 238 // is actually on or actually off or whatever was requested. 239 private boolean mDisplayReady; 240 241 // The suspend blocker used to keep the CPU alive when an application has acquired 242 // a wake lock. 243 private final SuspendBlocker mWakeLockSuspendBlocker; 244 245 // True if the wake lock suspend blocker has been acquired. 246 private boolean mHoldingWakeLockSuspendBlocker; 247 248 // The suspend blocker used to keep the CPU alive when the display is on, the 249 // display is getting ready or there is user activity (in which case the display 250 // must be on). 251 private final SuspendBlocker mDisplaySuspendBlocker; 252 253 // True if the display suspend blocker has been acquired. 254 private boolean mHoldingDisplaySuspendBlocker; 255 256 // The screen on blocker used to keep the screen from turning on while the lock 257 // screen is coming up. 258 private final ScreenOnBlockerImpl mScreenOnBlocker; 259 260 // True if systemReady() has been called. 261 private boolean mSystemReady; 262 263 // True if boot completed occurred. We keep the screen on until this happens. 264 private boolean mBootCompleted; 265 266 // True if auto-suspend mode is enabled. 267 // Refer to autosuspend.h. 268 private boolean mHalAutoSuspendModeEnabled; 269 270 // True if interactive mode is enabled. 271 // Refer to power.h. 272 private boolean mHalInteractiveModeEnabled; 273 274 // True if the device is plugged into a power source. 275 private boolean mIsPowered; 276 277 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 278 private int mPlugType; 279 280 // The current battery level percentage. 281 private int mBatteryLevel; 282 283 // The battery level percentage at the time the dream started. 284 // This is used to terminate a dream and go to sleep if the battery is 285 // draining faster than it is charging and the user activity timeout has expired. 286 private int mBatteryLevelWhenDreamStarted; 287 288 // The current dock state. 289 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 290 291 // True to decouple auto-suspend mode from the display state. 292 private boolean mDecoupleHalAutoSuspendModeFromDisplayConfig; 293 294 // True to decouple interactive mode from the display state. 295 private boolean mDecoupleHalInteractiveModeFromDisplayConfig; 296 297 // True if the device should wake up when plugged or unplugged. 298 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 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 // The minimum screen off timeout, in milliseconds. 341 private int mMinimumScreenOffTimeoutConfig; 342 343 // The screen dim duration, in milliseconds. 344 // This is subtracted from the end of the screen off timeout so the 345 // minimum screen off timeout should be longer than this. 346 private int mMaximumScreenDimDurationConfig; 347 348 // The maximum screen dim time expressed as a ratio relative to the screen 349 // off timeout. If the screen off timeout is very short then we want the 350 // dim timeout to also be quite short so that most of the time is spent on. 351 // Otherwise the user won't get much screen on time before dimming occurs. 352 private float mMaximumScreenDimRatioConfig; 353 354 // The screen off timeout setting value in milliseconds. 355 private int mScreenOffTimeoutSetting; 356 357 // The maximum allowable screen off timeout according to the device 358 // administration policy. Overrides other settings. 359 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 360 361 // The stay on while plugged in setting. 362 // A bitfield of battery conditions under which to make the screen stay on. 363 private int mStayOnWhilePluggedInSetting; 364 365 // True if the device should stay on. 366 private boolean mStayOn; 367 368 // True if the proximity sensor reads a positive result. 369 private boolean mProximityPositive; 370 371 // Screen brightness setting limits. 372 private int mScreenBrightnessSettingMinimum; 373 private int mScreenBrightnessSettingMaximum; 374 private int mScreenBrightnessSettingDefault; 375 376 // The screen brightness setting, from 0 to 255. 377 // Use -1 if no value has been set. 378 private int mScreenBrightnessSetting; 379 380 // The screen auto-brightness adjustment setting, from -1 to 1. 381 // Use 0 if there is no adjustment. 382 private float mScreenAutoBrightnessAdjustmentSetting; 383 384 // The screen brightness mode. 385 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 386 private int mScreenBrightnessModeSetting; 387 388 // The screen brightness setting override from the window manager 389 // to allow the current foreground activity to override the brightness. 390 // Use -1 to disable. 391 private int mScreenBrightnessOverrideFromWindowManager = -1; 392 393 // The user activity timeout override from the window manager 394 // to allow the current foreground activity to override the user activity timeout. 395 // Use -1 to disable. 396 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 397 398 // The screen brightness setting override from the settings application 399 // to temporarily adjust the brightness until next updated, 400 // Use -1 to disable. 401 private int mTemporaryScreenBrightnessSettingOverride = -1; 402 403 // The screen brightness adjustment setting override from the settings 404 // application to temporarily adjust the auto-brightness adjustment factor 405 // until next updated, in the range -1..1. 406 // Use NaN to disable. 407 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 408 409 // The screen state to use while dozing. 410 private int mDozeScreenStateOverrideFromDreamManager = Display.STATE_UNKNOWN; 411 412 // The screen brightness to use while dozing. 413 private int mDozeScreenBrightnessOverrideFromDreamManager = PowerManager.BRIGHTNESS_DEFAULT; 414 415 // Time when we last logged a warning about calling userActivity() without permission. 416 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 417 418 // If true, the device is in low power mode. 419 private boolean mLowPowerModeEnabled; 420 421 // Current state of the low power mode setting. 422 private boolean mLowPowerModeSetting; 423 424 // Current state of whether the settings are allowing auto low power mode. 425 private boolean mAutoLowPowerModeEnabled; 426 427 // The user turned off low power mode below the trigger level 428 private boolean mAutoLowPowerModeSnoozing; 429 430 // True if the battery level is currently considered low. 431 private boolean mBatteryLevelLow; 432 433 private final ArrayList<PowerManagerInternal.LowPowerModeListener> mLowPowerModeListeners 434 = new ArrayList<PowerManagerInternal.LowPowerModeListener>(); 435 436 private native void nativeInit(); 437 438 private static native void nativeAcquireSuspendBlocker(String name); 439 private static native void nativeReleaseSuspendBlocker(String name); 440 private static native void nativeSetInteractive(boolean enable); 441 private static native void nativeSetAutoSuspend(boolean enable); 442 private static native void nativeSendPowerHint(int hintId, int data); 443 444 public PowerManagerService(Context context) { 445 super(context); 446 mContext = context; 447 mHandlerThread = new ServiceThread(TAG, 448 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 449 mHandlerThread.start(); 450 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 451 452 synchronized (mLock) { 453 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 454 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 455 mDisplaySuspendBlocker.acquire(); 456 mHoldingDisplaySuspendBlocker = true; 457 mHalAutoSuspendModeEnabled = false; 458 mHalInteractiveModeEnabled = true; 459 460 mScreenOnBlocker = new ScreenOnBlockerImpl(); 461 mWakefulness = WAKEFULNESS_AWAKE; 462 mInteractive = true; 463 464 nativeInit(); 465 nativeSetAutoSuspend(false); 466 nativeSetInteractive(true); 467 } 468 } 469 470 @Override 471 public void onStart() { 472 publishBinderService(Context.POWER_SERVICE, new BinderService()); 473 publishLocalService(PowerManagerInternal.class, new LocalService()); 474 475 Watchdog.getInstance().addMonitor(this); 476 Watchdog.getInstance().addThread(mHandler); 477 } 478 479 @Override 480 public void onBootPhase(int phase) { 481 if (phase == PHASE_BOOT_COMPLETED) { 482 // This is our early signal that the system thinks it has finished booting. 483 // However, the boot animation may still be running for a few more seconds 484 // since it is ultimately in charge of when it terminates. 485 // Defer transitioning into the boot completed state until the animation exits. 486 // We do this so that the screen does not start to dim prematurely before 487 // the user has actually had a chance to interact with the device. 488 startWatchingForBootAnimationFinished(); 489 } 490 } 491 492 public void systemReady(IAppOpsService appOps) { 493 synchronized (mLock) { 494 mSystemReady = true; 495 mAppOps = appOps; 496 mDreamManager = getLocalService(DreamManagerInternal.class); 497 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 498 mPolicy = getLocalService(WindowManagerPolicy.class); 499 mBatteryManagerInternal = getLocalService(BatteryManagerInternal.class); 500 501 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 502 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 503 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 504 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 505 506 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 507 508 // The notifier runs on the system server's main looper so as not to interfere 509 // with the animations and other critical functions of the power manager. 510 mBatteryStats = BatteryStatsService.getService(); 511 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 512 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 513 mScreenOnBlocker, mPolicy); 514 515 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 516 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 517 mHandler); 518 mSettingsObserver = new SettingsObserver(mHandler); 519 520 mLightsManager = getLocalService(LightsManager.class); 521 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 522 523 // Initialize display power management. 524 mDisplayManagerInternal.initPowerManagement( 525 mDisplayPowerCallbacks, mHandler, sensorManager); 526 527 // Register for broadcasts from other components of the system. 528 IntentFilter filter = new IntentFilter(); 529 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 530 filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); 531 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 532 533 filter = new IntentFilter(); 534 filter.addAction(Intent.ACTION_DREAMING_STARTED); 535 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 536 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 537 538 filter = new IntentFilter(); 539 filter.addAction(Intent.ACTION_USER_SWITCHED); 540 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 541 542 filter = new IntentFilter(); 543 filter.addAction(Intent.ACTION_DOCK_EVENT); 544 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 545 546 // Register for settings changes. 547 final ContentResolver resolver = mContext.getContentResolver(); 548 resolver.registerContentObserver(Settings.Secure.getUriFor( 549 Settings.Secure.SCREENSAVER_ENABLED), 550 false, mSettingsObserver, UserHandle.USER_ALL); 551 resolver.registerContentObserver(Settings.Secure.getUriFor( 552 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 553 false, mSettingsObserver, UserHandle.USER_ALL); 554 resolver.registerContentObserver(Settings.Secure.getUriFor( 555 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 556 false, mSettingsObserver, UserHandle.USER_ALL); 557 resolver.registerContentObserver(Settings.System.getUriFor( 558 Settings.System.SCREEN_OFF_TIMEOUT), 559 false, mSettingsObserver, UserHandle.USER_ALL); 560 resolver.registerContentObserver(Settings.Global.getUriFor( 561 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 562 false, mSettingsObserver, UserHandle.USER_ALL); 563 resolver.registerContentObserver(Settings.System.getUriFor( 564 Settings.System.SCREEN_BRIGHTNESS), 565 false, mSettingsObserver, UserHandle.USER_ALL); 566 resolver.registerContentObserver(Settings.System.getUriFor( 567 Settings.System.SCREEN_BRIGHTNESS_MODE), 568 false, mSettingsObserver, UserHandle.USER_ALL); 569 resolver.registerContentObserver(Settings.System.getUriFor( 570 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ), 571 false, mSettingsObserver, UserHandle.USER_ALL); 572 resolver.registerContentObserver(Settings.Global.getUriFor( 573 Settings.Global.LOW_POWER_MODE), 574 false, mSettingsObserver, UserHandle.USER_ALL); 575 resolver.registerContentObserver(Settings.Global.getUriFor( 576 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL), 577 false, mSettingsObserver, UserHandle.USER_ALL); 578 // Go. 579 readConfigurationLocked(); 580 updateSettingsLocked(); 581 mDirty |= DIRTY_BATTERY_STATE; 582 updatePowerStateLocked(); 583 } 584 } 585 586 private void readConfigurationLocked() { 587 final Resources resources = mContext.getResources(); 588 589 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 590 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 591 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 592 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 593 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 594 com.android.internal.R.bool.config_unplugTurnsOnScreen); 595 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 596 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 597 mDreamsSupportedConfig = resources.getBoolean( 598 com.android.internal.R.bool.config_dreamsSupported); 599 mDreamsEnabledByDefaultConfig = resources.getBoolean( 600 com.android.internal.R.bool.config_dreamsEnabledByDefault); 601 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 602 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 603 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 604 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 605 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 606 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 607 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 608 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 609 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 610 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 611 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 612 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 613 mMinimumScreenOffTimeoutConfig = resources.getInteger( 614 com.android.internal.R.integer.config_minimumScreenOffTimeout); 615 mMaximumScreenDimDurationConfig = resources.getInteger( 616 com.android.internal.R.integer.config_maximumScreenDimDuration); 617 mMaximumScreenDimRatioConfig = resources.getFraction( 618 com.android.internal.R.fraction.config_maximumScreenDimRatio, 1, 1); 619 } 620 621 private void updateSettingsLocked() { 622 final ContentResolver resolver = mContext.getContentResolver(); 623 624 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 625 Settings.Secure.SCREENSAVER_ENABLED, 626 mDreamsEnabledByDefaultConfig ? 1 : 0, 627 UserHandle.USER_CURRENT) != 0); 628 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 629 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 630 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 631 UserHandle.USER_CURRENT) != 0); 632 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 633 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 634 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 635 UserHandle.USER_CURRENT) != 0); 636 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 637 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 638 UserHandle.USER_CURRENT); 639 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 640 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 641 642 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 643 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 644 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 645 UserHandle.USER_CURRENT); 646 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 647 mTemporaryScreenBrightnessSettingOverride = -1; 648 } 649 650 final float oldScreenAutoBrightnessAdjustmentSetting = 651 mScreenAutoBrightnessAdjustmentSetting; 652 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 653 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 654 UserHandle.USER_CURRENT); 655 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 656 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 657 } 658 659 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 660 Settings.System.SCREEN_BRIGHTNESS_MODE, 661 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 662 663 final boolean lowPowerModeEnabled = Settings.Global.getInt(resolver, 664 Settings.Global.LOW_POWER_MODE, 0) != 0; 665 final boolean autoLowPowerModeEnabled = Settings.Global.getInt(resolver, 666 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL, 0) != 0; 667 if (lowPowerModeEnabled != mLowPowerModeSetting 668 || autoLowPowerModeEnabled != mAutoLowPowerModeEnabled) { 669 if (lowPowerModeEnabled != mLowPowerModeSetting) { 670 if (!mAutoLowPowerModeSnoozing && !lowPowerModeEnabled && !mIsPowered 671 && mAutoLowPowerModeEnabled) { 672 if (DEBUG_SPEW) { 673 Slog.d(TAG, "updateSettingsLocked: snoozing low power mode"); 674 } 675 mAutoLowPowerModeSnoozing = true; 676 } else if (mAutoLowPowerModeSnoozing && lowPowerModeEnabled) { 677 if (DEBUG_SPEW) { 678 Slog.d(TAG, "updateSettingsLocked: no longer snoozing low power mode"); 679 } 680 mAutoLowPowerModeSnoozing = true; 681 } 682 } 683 mLowPowerModeSetting = lowPowerModeEnabled; 684 mAutoLowPowerModeEnabled = autoLowPowerModeEnabled; 685 updateLowPowerModeLocked(); 686 } 687 688 mDirty |= DIRTY_SETTINGS; 689 } 690 691 void updateLowPowerModeLocked() { 692 if (mIsPowered && mLowPowerModeSetting) { 693 if (DEBUG_SPEW) { 694 Slog.d(TAG, "updateLowPowerModeLocked: powered, turning setting off"); 695 } 696 // Turn setting off if powered 697 Settings.Global.putInt(mContext.getContentResolver(), 698 Settings.Global.LOW_POWER_MODE, 0); 699 mLowPowerModeSetting = false; 700 } else if (!mIsPowered && mAutoLowPowerModeEnabled && !mAutoLowPowerModeSnoozing 701 && mBatteryLevelLow && !mLowPowerModeSetting) { 702 if (DEBUG_SPEW) { 703 Slog.d(TAG, "updateLowPowerModeLocked: trigger level reached, turning setting on"); 704 } 705 // Turn setting on if trigger level is enabled, and we're now below it 706 Settings.Global.putInt(mContext.getContentResolver(), 707 Settings.Global.LOW_POWER_MODE, 1); 708 mLowPowerModeSetting = true; 709 } 710 final boolean lowPowerModeEnabled = mLowPowerModeSetting; 711 if (mLowPowerModeEnabled != lowPowerModeEnabled) { 712 mLowPowerModeEnabled = lowPowerModeEnabled; 713 powerHintInternal(POWER_HINT_LOW_POWER, lowPowerModeEnabled ? 1 : 0); 714 mLowPowerModeEnabled = lowPowerModeEnabled; 715 BackgroundThread.getHandler().post(new Runnable() { 716 @Override 717 public void run() { 718 Intent intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGING) 719 .putExtra(PowerManager.EXTRA_POWER_SAVE_MODE, mLowPowerModeEnabled) 720 .addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 721 mContext.sendBroadcast(intent); 722 ArrayList<PowerManagerInternal.LowPowerModeListener> listeners; 723 synchronized (mLock) { 724 listeners = new ArrayList<PowerManagerInternal.LowPowerModeListener>( 725 mLowPowerModeListeners); 726 } 727 for (int i=0; i<listeners.size(); i++) { 728 listeners.get(i).onLowPowerModeChanged(lowPowerModeEnabled); 729 } 730 intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED); 731 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 732 mContext.sendBroadcast(intent); 733 } 734 }); 735 } 736 } 737 738 private void handleSettingsChangedLocked() { 739 updateSettingsLocked(); 740 updatePowerStateLocked(); 741 } 742 743 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 744 WorkSource ws, String historyTag, int uid, int pid) { 745 synchronized (mLock) { 746 if (DEBUG_SPEW) { 747 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 748 + ", flags=0x" + Integer.toHexString(flags) 749 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 750 } 751 752 WakeLock wakeLock; 753 int index = findWakeLockIndexLocked(lock); 754 boolean notifyAcquire; 755 if (index >= 0) { 756 wakeLock = mWakeLocks.get(index); 757 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 758 // Update existing wake lock. This shouldn't happen but is harmless. 759 notifyWakeLockChangingLocked(wakeLock, flags, tag, packageName, 760 uid, pid, ws, historyTag); 761 wakeLock.updateProperties(flags, tag, packageName, ws, historyTag, uid, pid); 762 } 763 notifyAcquire = false; 764 } else { 765 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, historyTag, uid, pid); 766 try { 767 lock.linkToDeath(wakeLock, 0); 768 } catch (RemoteException ex) { 769 throw new IllegalArgumentException("Wake lock is already dead."); 770 } 771 mWakeLocks.add(wakeLock); 772 notifyAcquire = true; 773 } 774 775 applyWakeLockFlagsOnAcquireLocked(wakeLock, uid); 776 mDirty |= DIRTY_WAKE_LOCKS; 777 updatePowerStateLocked(); 778 if (notifyAcquire) { 779 // This needs to be done last so we are sure we have acquired the 780 // kernel wake lock. Otherwise we have a race where the system may 781 // go to sleep between the time we start the accounting in battery 782 // stats and when we actually get around to telling the kernel to 783 // stay awake. 784 notifyWakeLockAcquiredLocked(wakeLock); 785 } 786 } 787 } 788 789 @SuppressWarnings("deprecation") 790 private static boolean isScreenLock(final WakeLock wakeLock) { 791 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 792 case PowerManager.FULL_WAKE_LOCK: 793 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 794 case PowerManager.SCREEN_DIM_WAKE_LOCK: 795 return true; 796 } 797 return false; 798 } 799 800 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock, int uid) { 801 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 802 && isScreenLock(wakeLock)) { 803 wakeUpNoUpdateLocked(SystemClock.uptimeMillis(), uid); 804 } 805 } 806 807 private void releaseWakeLockInternal(IBinder lock, int flags) { 808 synchronized (mLock) { 809 int index = findWakeLockIndexLocked(lock); 810 if (index < 0) { 811 if (DEBUG_SPEW) { 812 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 813 + " [not found], flags=0x" + Integer.toHexString(flags)); 814 } 815 return; 816 } 817 818 WakeLock wakeLock = mWakeLocks.get(index); 819 if (DEBUG_SPEW) { 820 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 821 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 822 } 823 824 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 825 mRequestWaitForNegativeProximity = true; 826 } 827 828 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 829 removeWakeLockLocked(wakeLock, index); 830 } 831 } 832 833 private void handleWakeLockDeath(WakeLock wakeLock) { 834 synchronized (mLock) { 835 if (DEBUG_SPEW) { 836 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 837 + " [" + wakeLock.mTag + "]"); 838 } 839 840 int index = mWakeLocks.indexOf(wakeLock); 841 if (index < 0) { 842 return; 843 } 844 845 removeWakeLockLocked(wakeLock, index); 846 } 847 } 848 849 private void removeWakeLockLocked(WakeLock wakeLock, int index) { 850 mWakeLocks.remove(index); 851 notifyWakeLockReleasedLocked(wakeLock); 852 853 applyWakeLockFlagsOnReleaseLocked(wakeLock); 854 mDirty |= DIRTY_WAKE_LOCKS; 855 updatePowerStateLocked(); 856 } 857 858 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 859 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 860 && isScreenLock(wakeLock)) { 861 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 862 PowerManager.USER_ACTIVITY_EVENT_OTHER, 863 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 864 wakeLock.mOwnerUid); 865 } 866 } 867 868 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws, String historyTag, 869 int callingUid) { 870 synchronized (mLock) { 871 int index = findWakeLockIndexLocked(lock); 872 if (index < 0) { 873 if (DEBUG_SPEW) { 874 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 875 + " [not found], ws=" + ws); 876 } 877 throw new IllegalArgumentException("Wake lock not active: " + lock 878 + " from uid " + callingUid); 879 } 880 881 WakeLock wakeLock = mWakeLocks.get(index); 882 if (DEBUG_SPEW) { 883 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 884 + " [" + wakeLock.mTag + "], ws=" + ws); 885 } 886 887 if (!wakeLock.hasSameWorkSource(ws)) { 888 notifyWakeLockChangingLocked(wakeLock, wakeLock.mFlags, wakeLock.mTag, 889 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 890 ws, historyTag); 891 wakeLock.mHistoryTag = historyTag; 892 wakeLock.updateWorkSource(ws); 893 } 894 } 895 } 896 897 private int findWakeLockIndexLocked(IBinder lock) { 898 final int count = mWakeLocks.size(); 899 for (int i = 0; i < count; i++) { 900 if (mWakeLocks.get(i).mLock == lock) { 901 return i; 902 } 903 } 904 return -1; 905 } 906 907 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 908 if (mSystemReady) { 909 wakeLock.mNotifiedAcquired = true; 910 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 911 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 912 wakeLock.mHistoryTag); 913 } 914 } 915 916 private void notifyWakeLockChangingLocked(WakeLock wakeLock, int flags, String tag, 917 String packageName, int uid, int pid, WorkSource ws, String historyTag) { 918 if (mSystemReady && wakeLock.mNotifiedAcquired) { 919 mNotifier.onWakeLockChanging(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 920 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource, 921 wakeLock.mHistoryTag, flags, tag, packageName, uid, pid, ws, historyTag); 922 } 923 } 924 925 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 926 if (mSystemReady && wakeLock.mNotifiedAcquired) { 927 wakeLock.mNotifiedAcquired = false; 928 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, 929 wakeLock.mPackageName, wakeLock.mOwnerUid, wakeLock.mOwnerPid, 930 wakeLock.mWorkSource, wakeLock.mHistoryTag); 931 } 932 } 933 934 @SuppressWarnings("deprecation") 935 private boolean isWakeLockLevelSupportedInternal(int level) { 936 synchronized (mLock) { 937 switch (level) { 938 case PowerManager.PARTIAL_WAKE_LOCK: 939 case PowerManager.SCREEN_DIM_WAKE_LOCK: 940 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 941 case PowerManager.FULL_WAKE_LOCK: 942 case PowerManager.DOZE_WAKE_LOCK: 943 return true; 944 945 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 946 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 947 948 default: 949 return false; 950 } 951 } 952 } 953 954 // Called from native code. 955 private void userActivityFromNative(long eventTime, int event, int flags) { 956 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 957 } 958 959 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 960 synchronized (mLock) { 961 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 962 updatePowerStateLocked(); 963 } 964 } 965 } 966 967 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 968 if (DEBUG_SPEW) { 969 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 970 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 971 + ", uid=" + uid); 972 } 973 974 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 975 || !mBootCompleted || !mSystemReady) { 976 return false; 977 } 978 979 Trace.traceBegin(Trace.TRACE_TAG_POWER, "userActivity"); 980 try { 981 if (eventTime > mLastInteractivePowerHintTime) { 982 powerHintInternal(POWER_HINT_INTERACTION, 0); 983 mLastInteractivePowerHintTime = eventTime; 984 } 985 986 mNotifier.onUserActivity(event, uid); 987 988 if (mWakefulness == WAKEFULNESS_ASLEEP 989 || mWakefulness == WAKEFULNESS_DOZING 990 || (flags & PowerManager.USER_ACTIVITY_FLAG_INDIRECT) != 0) { 991 return false; 992 } 993 994 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 995 if (eventTime > mLastUserActivityTimeNoChangeLights 996 && eventTime > mLastUserActivityTime) { 997 mLastUserActivityTimeNoChangeLights = eventTime; 998 mDirty |= DIRTY_USER_ACTIVITY; 999 return true; 1000 } 1001 } else { 1002 if (eventTime > mLastUserActivityTime) { 1003 mLastUserActivityTime = eventTime; 1004 mDirty |= DIRTY_USER_ACTIVITY; 1005 return true; 1006 } 1007 } 1008 } finally { 1009 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1010 } 1011 return false; 1012 } 1013 1014 private void wakeUpInternal(long eventTime, int uid) { 1015 synchronized (mLock) { 1016 if (wakeUpNoUpdateLocked(eventTime, uid)) { 1017 updatePowerStateLocked(); 1018 } 1019 } 1020 } 1021 1022 private boolean wakeUpNoUpdateLocked(long eventTime, int uid) { 1023 if (DEBUG_SPEW) { 1024 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime + ", uid=" + uid); 1025 } 1026 1027 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 1028 || !mBootCompleted || !mSystemReady) { 1029 return false; 1030 } 1031 1032 Trace.traceBegin(Trace.TRACE_TAG_POWER, "wakeUp"); 1033 try { 1034 switch (mWakefulness) { 1035 case WAKEFULNESS_ASLEEP: 1036 Slog.i(TAG, "Waking up from sleep (uid " + uid +")..."); 1037 break; 1038 case WAKEFULNESS_DREAMING: 1039 Slog.i(TAG, "Waking up from dream (uid " + uid +")..."); 1040 break; 1041 case WAKEFULNESS_DOZING: 1042 Slog.i(TAG, "Waking up from dozing (uid " + uid +")..."); 1043 break; 1044 } 1045 1046 mLastWakeTime = eventTime; 1047 mDirty |= DIRTY_WAKEFULNESS; 1048 mWakefulness = WAKEFULNESS_AWAKE; 1049 setInteractiveStateLocked(true, 0); 1050 1051 userActivityNoUpdateLocked( 1052 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, uid); 1053 } finally { 1054 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1055 } 1056 return true; 1057 } 1058 1059 private void goToSleepInternal(long eventTime, int reason, int flags, int uid) { 1060 synchronized (mLock) { 1061 if (goToSleepNoUpdateLocked(eventTime, reason, flags, uid)) { 1062 updatePowerStateLocked(); 1063 } 1064 } 1065 } 1066 1067 // This method is called goToSleep for historical reasons but we actually start 1068 // dozing before really going to sleep. 1069 @SuppressWarnings("deprecation") 1070 private boolean goToSleepNoUpdateLocked(long eventTime, int reason, int flags, int uid) { 1071 if (DEBUG_SPEW) { 1072 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime 1073 + ", reason=" + reason + ", flags=" + flags + ", uid=" + uid); 1074 } 1075 1076 if (eventTime < mLastWakeTime 1077 || mWakefulness == WAKEFULNESS_ASLEEP 1078 || mWakefulness == WAKEFULNESS_DOZING 1079 || !mBootCompleted || !mSystemReady) { 1080 return false; 1081 } 1082 1083 Trace.traceBegin(Trace.TRACE_TAG_POWER, "goToSleep"); 1084 try { 1085 switch (reason) { 1086 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 1087 Slog.i(TAG, "Going to sleep due to device administration policy " 1088 + "(uid " + uid +")..."); 1089 break; 1090 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 1091 Slog.i(TAG, "Going to sleep due to screen timeout (uid " + uid +")..."); 1092 break; 1093 case PowerManager.GO_TO_SLEEP_REASON_LID_SWITCH: 1094 Slog.i(TAG, "Going to sleep due to lid switch (uid " + uid +")..."); 1095 break; 1096 case PowerManager.GO_TO_SLEEP_REASON_POWER_BUTTON: 1097 Slog.i(TAG, "Going to sleep due to power button (uid " + uid +")..."); 1098 break; 1099 case PowerManager.GO_TO_SLEEP_REASON_HDMI: 1100 Slog.i(TAG, "Going to sleep due to HDMI standby (uid " + uid +")..."); 1101 break; 1102 default: 1103 Slog.i(TAG, "Going to sleep by application request (uid " + uid +")..."); 1104 reason = PowerManager.GO_TO_SLEEP_REASON_APPLICATION; 1105 break; 1106 } 1107 1108 mLastSleepTime = eventTime; 1109 mDirty |= DIRTY_WAKEFULNESS; 1110 mWakefulness = WAKEFULNESS_DOZING; 1111 mSandmanSummoned = true; 1112 setInteractiveStateLocked(false, reason); 1113 1114 // Report the number of wake locks that will be cleared by going to sleep. 1115 int numWakeLocksCleared = 0; 1116 final int numWakeLocks = mWakeLocks.size(); 1117 for (int i = 0; i < numWakeLocks; i++) { 1118 final WakeLock wakeLock = mWakeLocks.get(i); 1119 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1120 case PowerManager.FULL_WAKE_LOCK: 1121 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1122 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1123 numWakeLocksCleared += 1; 1124 break; 1125 } 1126 } 1127 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 1128 1129 // Skip dozing if requested. 1130 if ((flags & PowerManager.GO_TO_SLEEP_FLAG_NO_DOZE) != 0) { 1131 reallyGoToSleepNoUpdateLocked(eventTime, uid); 1132 } 1133 } finally { 1134 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1135 } 1136 return true; 1137 } 1138 1139 private void napInternal(long eventTime, int uid) { 1140 synchronized (mLock) { 1141 if (napNoUpdateLocked(eventTime, uid)) { 1142 updatePowerStateLocked(); 1143 } 1144 } 1145 } 1146 1147 private boolean napNoUpdateLocked(long eventTime, int uid) { 1148 if (DEBUG_SPEW) { 1149 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime + ", uid=" + uid); 1150 } 1151 1152 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1153 || !mBootCompleted || !mSystemReady) { 1154 return false; 1155 } 1156 1157 Trace.traceBegin(Trace.TRACE_TAG_POWER, "nap"); 1158 try { 1159 Slog.i(TAG, "Nap time (uid " + uid +")..."); 1160 1161 mDirty |= DIRTY_WAKEFULNESS; 1162 mWakefulness = WAKEFULNESS_DREAMING; 1163 mSandmanSummoned = true; 1164 setInteractiveStateLocked(true, 0); 1165 } finally { 1166 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1167 } 1168 return true; 1169 } 1170 1171 // Done dozing, drop everything and go to sleep. 1172 private boolean reallyGoToSleepNoUpdateLocked(long eventTime, int uid) { 1173 if (DEBUG_SPEW) { 1174 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime 1175 + ", uid=" + uid); 1176 } 1177 1178 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1179 || !mBootCompleted || !mSystemReady) { 1180 return false; 1181 } 1182 1183 Trace.traceBegin(Trace.TRACE_TAG_POWER, "reallyGoToSleep"); 1184 try { 1185 Slog.i(TAG, "Sleeping (uid " + uid +")..."); 1186 1187 mDirty |= DIRTY_WAKEFULNESS; 1188 mWakefulness = WAKEFULNESS_ASLEEP; 1189 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1190 } finally { 1191 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1192 } 1193 return true; 1194 } 1195 1196 private void setInteractiveStateLocked(boolean interactive, int reason) { 1197 if (mInteractive != interactive) { 1198 finishInteractiveStateChangeLocked(); 1199 1200 mInteractive = interactive; 1201 mInteractiveChanging = true; 1202 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1203 } 1204 } 1205 1206 private void finishInteractiveStateChangeLocked() { 1207 if (mInteractiveChanging) { 1208 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1209 mInteractiveChanging = false; 1210 } 1211 } 1212 1213 /** 1214 * Updates the global power state based on dirty bits recorded in mDirty. 1215 * 1216 * This is the main function that performs power state transitions. 1217 * We centralize them here so that we can recompute the power state completely 1218 * each time something important changes, and ensure that we do it the same 1219 * way each time. The point is to gather all of the transition logic here. 1220 */ 1221 private void updatePowerStateLocked() { 1222 if (!mSystemReady || mDirty == 0) { 1223 return; 1224 } 1225 if (!Thread.holdsLock(mLock)) { 1226 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1227 } 1228 1229 Trace.traceBegin(Trace.TRACE_TAG_POWER, "updatePowerState"); 1230 try { 1231 // Phase 0: Basic state updates. 1232 updateIsPoweredLocked(mDirty); 1233 updateStayOnLocked(mDirty); 1234 1235 // Phase 1: Update wakefulness. 1236 // Loop because the wake lock and user activity computations are influenced 1237 // by changes in wakefulness. 1238 final long now = SystemClock.uptimeMillis(); 1239 int dirtyPhase2 = 0; 1240 for (;;) { 1241 int dirtyPhase1 = mDirty; 1242 dirtyPhase2 |= dirtyPhase1; 1243 mDirty = 0; 1244 1245 updateWakeLockSummaryLocked(dirtyPhase1); 1246 updateUserActivitySummaryLocked(now, dirtyPhase1); 1247 if (!updateWakefulnessLocked(dirtyPhase1)) { 1248 break; 1249 } 1250 } 1251 1252 // Phase 2: Update dreams and display power state. 1253 updateDreamLocked(dirtyPhase2); 1254 updateDisplayPowerStateLocked(dirtyPhase2); 1255 1256 // Phase 3: Send notifications, if needed. 1257 if (mDisplayReady) { 1258 finishInteractiveStateChangeLocked(); 1259 } 1260 1261 // Phase 4: Update suspend blocker. 1262 // Because we might release the last suspend blocker here, we need to make sure 1263 // we finished everything else first! 1264 updateSuspendBlockerLocked(); 1265 } finally { 1266 Trace.traceEnd(Trace.TRACE_TAG_POWER); 1267 } 1268 } 1269 1270 /** 1271 * Updates the value of mIsPowered. 1272 * Sets DIRTY_IS_POWERED if a change occurred. 1273 */ 1274 private void updateIsPoweredLocked(int dirty) { 1275 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1276 final boolean wasPowered = mIsPowered; 1277 final int oldPlugType = mPlugType; 1278 final boolean oldLevelLow = mBatteryLevelLow; 1279 mIsPowered = mBatteryManagerInternal.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1280 mPlugType = mBatteryManagerInternal.getPlugType(); 1281 mBatteryLevel = mBatteryManagerInternal.getBatteryLevel(); 1282 mBatteryLevelLow = mBatteryManagerInternal.getBatteryLevelLow(); 1283 1284 if (DEBUG_SPEW) { 1285 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1286 + ", mIsPowered=" + mIsPowered 1287 + ", oldPlugType=" + oldPlugType 1288 + ", mPlugType=" + mPlugType 1289 + ", mBatteryLevel=" + mBatteryLevel); 1290 } 1291 1292 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1293 mDirty |= DIRTY_IS_POWERED; 1294 1295 // Update wireless dock detection state. 1296 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1297 mIsPowered, mPlugType, mBatteryLevel); 1298 1299 // Treat plugging and unplugging the devices as a user activity. 1300 // Users find it disconcerting when they plug or unplug the device 1301 // and it shuts off right away. 1302 // Some devices also wake the device when plugged or unplugged because 1303 // they don't have a charging LED. 1304 final long now = SystemClock.uptimeMillis(); 1305 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1306 dockedOnWirelessCharger)) { 1307 wakeUpNoUpdateLocked(now, Process.SYSTEM_UID); 1308 } 1309 userActivityNoUpdateLocked( 1310 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1311 1312 // Tell the notifier whether wireless charging has started so that 1313 // it can provide feedback to the user. 1314 if (dockedOnWirelessCharger) { 1315 mNotifier.onWirelessChargingStarted(); 1316 } 1317 } 1318 1319 if (wasPowered != mIsPowered || oldLevelLow != mBatteryLevelLow) { 1320 if (oldLevelLow != mBatteryLevelLow && !mBatteryLevelLow) { 1321 if (DEBUG_SPEW) { 1322 Slog.d(TAG, "updateIsPoweredLocked: resetting low power snooze"); 1323 } 1324 mAutoLowPowerModeSnoozing = false; 1325 } 1326 updateLowPowerModeLocked(); 1327 } 1328 } 1329 } 1330 1331 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1332 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1333 // Don't wake when powered unless configured to do so. 1334 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1335 return false; 1336 } 1337 1338 // Don't wake when undocked from wireless charger. 1339 // See WirelessChargerDetector for justification. 1340 if (wasPowered && !mIsPowered 1341 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1342 return false; 1343 } 1344 1345 // Don't wake when docked on wireless charger unless we are certain of it. 1346 // See WirelessChargerDetector for justification. 1347 if (!wasPowered && mIsPowered 1348 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1349 && !dockedOnWirelessCharger) { 1350 return false; 1351 } 1352 1353 // If already dreaming and becoming powered, then don't wake. 1354 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1355 return false; 1356 } 1357 1358 // Otherwise wake up! 1359 return true; 1360 } 1361 1362 /** 1363 * Updates the value of mStayOn. 1364 * Sets DIRTY_STAY_ON if a change occurred. 1365 */ 1366 private void updateStayOnLocked(int dirty) { 1367 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1368 final boolean wasStayOn = mStayOn; 1369 if (mStayOnWhilePluggedInSetting != 0 1370 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1371 mStayOn = mBatteryManagerInternal.isPowered(mStayOnWhilePluggedInSetting); 1372 } else { 1373 mStayOn = false; 1374 } 1375 1376 if (mStayOn != wasStayOn) { 1377 mDirty |= DIRTY_STAY_ON; 1378 } 1379 } 1380 } 1381 1382 /** 1383 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1384 * Note that most wake-locks are ignored when the system is asleep. 1385 * 1386 * This function must have no other side-effects. 1387 */ 1388 @SuppressWarnings("deprecation") 1389 private void updateWakeLockSummaryLocked(int dirty) { 1390 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1391 mWakeLockSummary = 0; 1392 1393 final int numWakeLocks = mWakeLocks.size(); 1394 for (int i = 0; i < numWakeLocks; i++) { 1395 final WakeLock wakeLock = mWakeLocks.get(i); 1396 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1397 case PowerManager.PARTIAL_WAKE_LOCK: 1398 mWakeLockSummary |= WAKE_LOCK_CPU; 1399 break; 1400 case PowerManager.FULL_WAKE_LOCK: 1401 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1402 break; 1403 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1404 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1405 break; 1406 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1407 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1408 break; 1409 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1410 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1411 break; 1412 case PowerManager.DOZE_WAKE_LOCK: 1413 mWakeLockSummary |= WAKE_LOCK_DOZE; 1414 break; 1415 } 1416 } 1417 1418 // Cancel wake locks that make no sense based on the current state. 1419 if (mWakefulness != WAKEFULNESS_DOZING) { 1420 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1421 } 1422 if (mWakefulness == WAKEFULNESS_ASLEEP 1423 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1424 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1425 | WAKE_LOCK_BUTTON_BRIGHT); 1426 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1427 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1428 } 1429 } 1430 1431 // Infer implied wake locks where necessary based on the current state. 1432 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1433 if (mWakefulness == WAKEFULNESS_AWAKE) { 1434 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1435 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1436 mWakeLockSummary |= WAKE_LOCK_CPU; 1437 } 1438 } 1439 1440 if (DEBUG_SPEW) { 1441 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1442 + wakefulnessToString(mWakefulness) 1443 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1444 } 1445 } 1446 } 1447 1448 /** 1449 * Updates the value of mUserActivitySummary to summarize the user requested 1450 * state of the system such as whether the screen should be bright or dim. 1451 * Note that user activity is ignored when the system is asleep. 1452 * 1453 * This function must have no other side-effects. 1454 */ 1455 private void updateUserActivitySummaryLocked(long now, int dirty) { 1456 // Update the status of the user activity timeout timer. 1457 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1458 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1459 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1460 1461 long nextTimeout = 0; 1462 if (mWakefulness == WAKEFULNESS_AWAKE 1463 || mWakefulness == WAKEFULNESS_DREAMING 1464 || mWakefulness == WAKEFULNESS_DOZING) { 1465 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1466 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1467 1468 mUserActivitySummary = 0; 1469 if (mLastUserActivityTime >= mLastWakeTime) { 1470 nextTimeout = mLastUserActivityTime 1471 + screenOffTimeout - screenDimDuration; 1472 if (now < nextTimeout) { 1473 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1474 } else { 1475 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1476 if (now < nextTimeout) { 1477 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1478 } 1479 } 1480 } 1481 if (mUserActivitySummary == 0 1482 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1483 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1484 if (now < nextTimeout) { 1485 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_BRIGHT) { 1486 mUserActivitySummary = USER_ACTIVITY_SCREEN_BRIGHT; 1487 } else if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DIM) { 1488 mUserActivitySummary = USER_ACTIVITY_SCREEN_DIM; 1489 } 1490 } 1491 } 1492 if (mUserActivitySummary != 0) { 1493 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1494 msg.setAsynchronous(true); 1495 mHandler.sendMessageAtTime(msg, nextTimeout); 1496 } 1497 } else { 1498 mUserActivitySummary = 0; 1499 } 1500 1501 if (DEBUG_SPEW) { 1502 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1503 + wakefulnessToString(mWakefulness) 1504 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1505 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1506 } 1507 } 1508 } 1509 1510 /** 1511 * Called when a user activity timeout has occurred. 1512 * Simply indicates that something about user activity has changed so that the new 1513 * state can be recomputed when the power state is updated. 1514 * 1515 * This function must have no other side-effects besides setting the dirty 1516 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1517 */ 1518 private void handleUserActivityTimeout() { // runs on handler thread 1519 synchronized (mLock) { 1520 if (DEBUG_SPEW) { 1521 Slog.d(TAG, "handleUserActivityTimeout"); 1522 } 1523 1524 mDirty |= DIRTY_USER_ACTIVITY; 1525 updatePowerStateLocked(); 1526 } 1527 } 1528 1529 private int getScreenOffTimeoutLocked() { 1530 int timeout = mScreenOffTimeoutSetting; 1531 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1532 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1533 } 1534 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1535 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1536 } 1537 return Math.max(timeout, mMinimumScreenOffTimeoutConfig); 1538 } 1539 1540 private int getScreenDimDurationLocked(int screenOffTimeout) { 1541 return Math.min(mMaximumScreenDimDurationConfig, 1542 (int)(screenOffTimeout * mMaximumScreenDimRatioConfig)); 1543 } 1544 1545 /** 1546 * Updates the wakefulness of the device. 1547 * 1548 * This is the function that decides whether the device should start dreaming 1549 * based on the current wake locks and user activity state. It may modify mDirty 1550 * if the wakefulness changes. 1551 * 1552 * Returns true if the wakefulness changed and we need to restart power state calculation. 1553 */ 1554 private boolean updateWakefulnessLocked(int dirty) { 1555 boolean changed = false; 1556 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1557 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1558 | DIRTY_DOCK_STATE)) != 0) { 1559 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1560 if (DEBUG_SPEW) { 1561 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1562 } 1563 final long time = SystemClock.uptimeMillis(); 1564 if (shouldNapAtBedTimeLocked()) { 1565 changed = napNoUpdateLocked(time, Process.SYSTEM_UID); 1566 } else { 1567 changed = goToSleepNoUpdateLocked(time, 1568 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0, Process.SYSTEM_UID); 1569 } 1570 } 1571 } 1572 return changed; 1573 } 1574 1575 /** 1576 * Returns true if the device should automatically nap and start dreaming when the user 1577 * activity timeout has expired and it's bedtime. 1578 */ 1579 private boolean shouldNapAtBedTimeLocked() { 1580 return mDreamsActivateOnSleepSetting 1581 || (mDreamsActivateOnDockSetting 1582 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1583 } 1584 1585 /** 1586 * Returns true if the device should go to sleep now. 1587 * Also used when exiting a dream to determine whether we should go back 1588 * to being fully awake or else go to sleep for good. 1589 */ 1590 private boolean isItBedTimeYetLocked() { 1591 return mBootCompleted && !isBeingKeptAwakeLocked(); 1592 } 1593 1594 /** 1595 * Returns true if the device is being kept awake by a wake lock, user activity 1596 * or the stay on while powered setting. We also keep the phone awake when 1597 * the proximity sensor returns a positive result so that the device does not 1598 * lock while in a phone call. This function only controls whether the device 1599 * will go to sleep or dream which is independent of whether it will be allowed 1600 * to suspend. 1601 */ 1602 private boolean isBeingKeptAwakeLocked() { 1603 return mStayOn 1604 || mProximityPositive 1605 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1606 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1607 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1608 } 1609 1610 /** 1611 * Determines whether to post a message to the sandman to update the dream state. 1612 */ 1613 private void updateDreamLocked(int dirty) { 1614 if ((dirty & (DIRTY_WAKEFULNESS 1615 | DIRTY_USER_ACTIVITY 1616 | DIRTY_WAKE_LOCKS 1617 | DIRTY_BOOT_COMPLETED 1618 | DIRTY_SETTINGS 1619 | DIRTY_IS_POWERED 1620 | DIRTY_STAY_ON 1621 | DIRTY_PROXIMITY_POSITIVE 1622 | DIRTY_BATTERY_STATE)) != 0) { 1623 scheduleSandmanLocked(); 1624 } 1625 } 1626 1627 private void scheduleSandmanLocked() { 1628 if (!mSandmanScheduled) { 1629 mSandmanScheduled = true; 1630 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1631 msg.setAsynchronous(true); 1632 mHandler.sendMessage(msg); 1633 } 1634 } 1635 1636 /** 1637 * Called when the device enters or exits a dreaming or dozing state. 1638 * 1639 * We do this asynchronously because we must call out of the power manager to start 1640 * the dream and we don't want to hold our lock while doing so. There is a risk that 1641 * the device will wake or go to sleep in the meantime so we have to handle that case. 1642 */ 1643 private void handleSandman() { // runs on handler thread 1644 // Handle preconditions. 1645 final boolean startDreaming; 1646 final int wakefulness; 1647 synchronized (mLock) { 1648 mSandmanScheduled = false; 1649 wakefulness = mWakefulness; 1650 if (mSandmanSummoned) { 1651 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1652 || wakefulness == WAKEFULNESS_DOZING); 1653 mSandmanSummoned = false; 1654 } else { 1655 startDreaming = false; 1656 } 1657 } 1658 1659 // Start dreaming if needed. 1660 // We only control the dream on the handler thread, so we don't need to worry about 1661 // concurrent attempts to start or stop the dream. 1662 final boolean isDreaming; 1663 if (mDreamManager != null) { 1664 // Restart the dream whenever the sandman is summoned. 1665 if (startDreaming) { 1666 mDreamManager.stopDream(false /*immediate*/); 1667 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1668 } 1669 isDreaming = mDreamManager.isDreaming(); 1670 } else { 1671 isDreaming = false; 1672 } 1673 1674 // Update dream state. 1675 synchronized (mLock) { 1676 // Remember the initial battery level when the dream started. 1677 if (startDreaming && isDreaming) { 1678 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1679 if (wakefulness == WAKEFULNESS_DOZING) { 1680 Slog.i(TAG, "Dozing..."); 1681 } else { 1682 Slog.i(TAG, "Dreaming..."); 1683 } 1684 } 1685 1686 // If preconditions changed, wait for the next iteration to determine 1687 // whether the dream should continue (or be restarted). 1688 if (mSandmanSummoned || mWakefulness != wakefulness) { 1689 return; // wait for next cycle 1690 } 1691 1692 // Determine whether the dream should continue. 1693 if (wakefulness == WAKEFULNESS_DREAMING) { 1694 if (isDreaming && canDreamLocked()) { 1695 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1696 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1697 - mDreamsBatteryLevelDrainCutoffConfig 1698 && !isBeingKeptAwakeLocked()) { 1699 // If the user activity timeout expired and the battery appears 1700 // to be draining faster than it is charging then stop dreaming 1701 // and go to sleep. 1702 Slog.i(TAG, "Stopping dream because the battery appears to " 1703 + "be draining faster than it is charging. " 1704 + "Battery level when dream started: " 1705 + mBatteryLevelWhenDreamStarted + "%. " 1706 + "Battery level now: " + mBatteryLevel + "%."); 1707 } else { 1708 return; // continue dreaming 1709 } 1710 } 1711 1712 // Dream has ended or will be stopped. Update the power state. 1713 if (isItBedTimeYetLocked()) { 1714 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1715 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0, Process.SYSTEM_UID); 1716 updatePowerStateLocked(); 1717 } else { 1718 wakeUpNoUpdateLocked(SystemClock.uptimeMillis(), Process.SYSTEM_UID); 1719 updatePowerStateLocked(); 1720 } 1721 } else if (wakefulness == WAKEFULNESS_DOZING) { 1722 if (isDreaming) { 1723 return; // continue dozing 1724 } 1725 1726 // Doze has ended or will be stopped. Update the power state. 1727 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis(), Process.SYSTEM_UID); 1728 updatePowerStateLocked(); 1729 } 1730 } 1731 1732 // Stop dream. 1733 if (isDreaming) { 1734 mDreamManager.stopDream(false /*immediate*/); 1735 } 1736 } 1737 1738 /** 1739 * Returns true if the device is allowed to dream in its current state. 1740 * This function is not called when dozing. 1741 */ 1742 private boolean canDreamLocked() { 1743 if (mWakefulness != WAKEFULNESS_DREAMING 1744 || !mDreamsSupportedConfig 1745 || !mDreamsEnabledSetting 1746 || !mDisplayPowerRequest.isBrightOrDim() 1747 || !mBootCompleted) { 1748 return false; 1749 } 1750 if (!isBeingKeptAwakeLocked()) { 1751 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1752 return false; 1753 } 1754 if (!mIsPowered 1755 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1756 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1757 return false; 1758 } 1759 if (mIsPowered 1760 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1761 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1762 return false; 1763 } 1764 } 1765 return true; 1766 } 1767 1768 private void handleScreenOnBlockerReleased() { 1769 synchronized (mLock) { 1770 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1771 updatePowerStateLocked(); 1772 } 1773 } 1774 1775 /** 1776 * Updates the display power state asynchronously. 1777 * When the update is finished, mDisplayReady will be set to true. The display 1778 * controller posts a message to tell us when the actual display power state 1779 * has been updated so we come back here to double-check and finish up. 1780 * 1781 * This function recalculates the display power state each time. 1782 */ 1783 private void updateDisplayPowerStateLocked(int dirty) { 1784 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1785 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1786 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1787 mDisplayPowerRequest.policy = getDesiredScreenPolicyLocked(); 1788 1789 int screenBrightness = mScreenBrightnessSettingDefault; 1790 float screenAutoBrightnessAdjustment = 0.0f; 1791 boolean autoBrightness = (mScreenBrightnessModeSetting == 1792 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1793 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1794 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1795 autoBrightness = false; 1796 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1797 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1798 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1799 screenBrightness = mScreenBrightnessSetting; 1800 } 1801 if (autoBrightness) { 1802 screenBrightness = mScreenBrightnessSettingDefault; 1803 if (isValidAutoBrightnessAdjustment( 1804 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1805 screenAutoBrightnessAdjustment = 1806 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1807 } else if (isValidAutoBrightnessAdjustment( 1808 mScreenAutoBrightnessAdjustmentSetting)) { 1809 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1810 } 1811 } 1812 screenBrightness = Math.max(Math.min(screenBrightness, 1813 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1814 screenAutoBrightnessAdjustment = Math.max(Math.min( 1815 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1816 mDisplayPowerRequest.screenBrightness = screenBrightness; 1817 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1818 screenAutoBrightnessAdjustment; 1819 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1820 1821 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1822 1823 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1824 1825 mDisplayPowerRequest.lowPowerMode = mLowPowerModeEnabled; 1826 1827 if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DOZE) { 1828 mDisplayPowerRequest.dozeScreenState = mDozeScreenStateOverrideFromDreamManager; 1829 mDisplayPowerRequest.dozeScreenBrightness = 1830 mDozeScreenBrightnessOverrideFromDreamManager; 1831 } else { 1832 mDisplayPowerRequest.dozeScreenState = Display.STATE_UNKNOWN; 1833 mDisplayPowerRequest.dozeScreenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 1834 } 1835 1836 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1837 mRequestWaitForNegativeProximity); 1838 mRequestWaitForNegativeProximity = false; 1839 1840 if (DEBUG_SPEW) { 1841 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1842 + ", policy=" + mDisplayPowerRequest.policy 1843 + ", mWakefulness=" + mWakefulness 1844 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1845 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1846 + ", mBootCompleted=" + mBootCompleted); 1847 } 1848 } 1849 } 1850 1851 private static boolean isValidBrightness(int value) { 1852 return value >= 0 && value <= 255; 1853 } 1854 1855 private static boolean isValidAutoBrightnessAdjustment(float value) { 1856 // Handles NaN by always returning false. 1857 return value >= -1.0f && value <= 1.0f; 1858 } 1859 1860 private int getDesiredScreenPolicyLocked() { 1861 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1862 return DisplayPowerRequest.POLICY_OFF; 1863 } 1864 1865 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1866 return DisplayPowerRequest.POLICY_DOZE; 1867 } 1868 1869 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1870 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1871 || !mBootCompleted) { 1872 return DisplayPowerRequest.POLICY_BRIGHT; 1873 } 1874 1875 return DisplayPowerRequest.POLICY_DIM; 1876 } 1877 1878 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1879 new DisplayManagerInternal.DisplayPowerCallbacks() { 1880 private int mDisplayState = Display.STATE_UNKNOWN; 1881 1882 @Override 1883 public void onStateChanged() { 1884 synchronized (mLock) { 1885 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1886 updatePowerStateLocked(); 1887 } 1888 } 1889 1890 @Override 1891 public void onProximityPositive() { 1892 synchronized (mLock) { 1893 mProximityPositive = true; 1894 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1895 updatePowerStateLocked(); 1896 } 1897 } 1898 1899 @Override 1900 public void onProximityNegative() { 1901 synchronized (mLock) { 1902 mProximityPositive = false; 1903 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1904 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1905 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1906 updatePowerStateLocked(); 1907 } 1908 } 1909 1910 @Override 1911 public void onDisplayStateChange(int state) { 1912 // This method is only needed to support legacy display blanking behavior 1913 // where the display's power state is coupled to suspend or to the power HAL. 1914 // The order of operations matters here. 1915 synchronized (mLock) { 1916 if (mDisplayState != state) { 1917 mDisplayState = state; 1918 if (state == Display.STATE_OFF) { 1919 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1920 setHalInteractiveModeLocked(false); 1921 } 1922 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1923 setHalAutoSuspendModeLocked(true); 1924 } 1925 } else { 1926 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1927 setHalAutoSuspendModeLocked(false); 1928 } 1929 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1930 setHalInteractiveModeLocked(true); 1931 } 1932 } 1933 } 1934 } 1935 } 1936 1937 @Override 1938 public void acquireSuspendBlocker() { 1939 mDisplaySuspendBlocker.acquire(); 1940 } 1941 1942 @Override 1943 public void releaseSuspendBlocker() { 1944 mDisplaySuspendBlocker.release(); 1945 } 1946 1947 @Override 1948 public String toString() { 1949 synchronized (this) { 1950 return "state=" + Display.stateToString(mDisplayState); 1951 } 1952 } 1953 }; 1954 1955 private boolean shouldUseProximitySensorLocked() { 1956 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1957 } 1958 1959 /** 1960 * Updates the suspend blocker that keeps the CPU alive. 1961 * 1962 * This function must have no other side-effects. 1963 */ 1964 private void updateSuspendBlockerLocked() { 1965 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1966 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1967 final boolean autoSuspend = !needDisplaySuspendBlocker; 1968 1969 // Disable auto-suspend if needed. 1970 if (!autoSuspend) { 1971 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1972 setHalAutoSuspendModeLocked(false); 1973 } 1974 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1975 setHalInteractiveModeLocked(true); 1976 } 1977 } 1978 1979 // First acquire suspend blockers if needed. 1980 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1981 mWakeLockSuspendBlocker.acquire(); 1982 mHoldingWakeLockSuspendBlocker = true; 1983 } 1984 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1985 mDisplaySuspendBlocker.acquire(); 1986 mHoldingDisplaySuspendBlocker = true; 1987 } 1988 1989 // Then release suspend blockers if needed. 1990 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1991 mWakeLockSuspendBlocker.release(); 1992 mHoldingWakeLockSuspendBlocker = false; 1993 } 1994 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1995 mDisplaySuspendBlocker.release(); 1996 mHoldingDisplaySuspendBlocker = false; 1997 } 1998 1999 // Enable auto-suspend if needed. 2000 if (autoSuspend) { 2001 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 2002 setHalInteractiveModeLocked(false); 2003 } 2004 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 2005 setHalAutoSuspendModeLocked(true); 2006 } 2007 } 2008 } 2009 2010 /** 2011 * Return true if we must keep a suspend blocker active on behalf of the display. 2012 * We do so if the screen is on or is in transition between states. 2013 */ 2014 private boolean needDisplaySuspendBlockerLocked() { 2015 if (!mDisplayReady) { 2016 return true; 2017 } 2018 if (mDisplayPowerRequest.isBrightOrDim()) { 2019 // If we asked for the screen to be on but it is off due to the proximity 2020 // sensor then we may suspend but only if the configuration allows it. 2021 // On some hardware it may not be safe to suspend because the proximity 2022 // sensor may not be correctly configured as a wake-up source. 2023 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 2024 || !mSuspendWhenScreenOffDueToProximityConfig) { 2025 return true; 2026 } 2027 } 2028 // Let the system suspend if the screen is off or dozing. 2029 return false; 2030 } 2031 2032 private void setHalAutoSuspendModeLocked(boolean enable) { 2033 if (enable != mHalAutoSuspendModeEnabled) { 2034 if (DEBUG) { 2035 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 2036 } 2037 mHalAutoSuspendModeEnabled = enable; 2038 Trace.traceBegin(Trace.TRACE_TAG_POWER, "setHalAutoSuspend(" + enable + ")"); 2039 try { 2040 nativeSetAutoSuspend(enable); 2041 } finally { 2042 Trace.traceEnd(Trace.TRACE_TAG_POWER); 2043 } 2044 } 2045 } 2046 2047 private void setHalInteractiveModeLocked(boolean enable) { 2048 if (enable != mHalInteractiveModeEnabled) { 2049 if (DEBUG) { 2050 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 2051 } 2052 mHalInteractiveModeEnabled = enable; 2053 Trace.traceBegin(Trace.TRACE_TAG_POWER, "setHalInteractive(" + enable + ")"); 2054 try { 2055 nativeSetInteractive(enable); 2056 } finally { 2057 Trace.traceEnd(Trace.TRACE_TAG_POWER); 2058 } 2059 } 2060 } 2061 2062 private boolean isInteractiveInternal() { 2063 synchronized (mLock) { 2064 return mInteractive; 2065 } 2066 } 2067 2068 private boolean isLowPowerModeInternal() { 2069 synchronized (mLock) { 2070 return mLowPowerModeEnabled; 2071 } 2072 } 2073 2074 private void handleBatteryStateChangedLocked() { 2075 mDirty |= DIRTY_BATTERY_STATE; 2076 updatePowerStateLocked(); 2077 } 2078 2079 private void startWatchingForBootAnimationFinished() { 2080 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 2081 } 2082 2083 private void checkIfBootAnimationFinished() { 2084 if (DEBUG) { 2085 Slog.d(TAG, "Check if boot animation finished..."); 2086 } 2087 2088 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 2089 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 2090 BOOT_ANIMATION_POLL_INTERVAL); 2091 return; 2092 } 2093 2094 synchronized (mLock) { 2095 if (!mBootCompleted) { 2096 Slog.i(TAG, "Boot animation finished."); 2097 handleBootCompletedLocked(); 2098 } 2099 } 2100 } 2101 2102 private void handleBootCompletedLocked() { 2103 final long now = SystemClock.uptimeMillis(); 2104 mBootCompleted = true; 2105 mDirty |= DIRTY_BOOT_COMPLETED; 2106 userActivityNoUpdateLocked( 2107 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 2108 updatePowerStateLocked(); 2109 } 2110 2111 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 2112 final String reason, boolean wait) { 2113 if (mHandler == null || !mSystemReady) { 2114 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 2115 } 2116 2117 Runnable runnable = new Runnable() { 2118 @Override 2119 public void run() { 2120 synchronized (this) { 2121 if (shutdown) { 2122 ShutdownThread.shutdown(mContext, confirm); 2123 } else { 2124 ShutdownThread.reboot(mContext, reason, confirm); 2125 } 2126 } 2127 } 2128 }; 2129 2130 // ShutdownThread must run on a looper capable of displaying the UI. 2131 Message msg = Message.obtain(mHandler, runnable); 2132 msg.setAsynchronous(true); 2133 mHandler.sendMessage(msg); 2134 2135 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 2136 if (wait) { 2137 synchronized (runnable) { 2138 while (true) { 2139 try { 2140 runnable.wait(); 2141 } catch (InterruptedException e) { 2142 } 2143 } 2144 } 2145 } 2146 } 2147 2148 private void crashInternal(final String message) { 2149 Thread t = new Thread("PowerManagerService.crash()") { 2150 @Override 2151 public void run() { 2152 throw new RuntimeException(message); 2153 } 2154 }; 2155 try { 2156 t.start(); 2157 t.join(); 2158 } catch (InterruptedException e) { 2159 Log.wtf(TAG, e); 2160 } 2161 } 2162 2163 private void setStayOnSettingInternal(int val) { 2164 Settings.Global.putInt(mContext.getContentResolver(), 2165 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 2166 } 2167 2168 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 2169 synchronized (mLock) { 2170 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 2171 mDirty |= DIRTY_SETTINGS; 2172 updatePowerStateLocked(); 2173 } 2174 } 2175 2176 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 2177 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 2178 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 2179 } 2180 2181 private void setAttentionLightInternal(boolean on, int color) { 2182 Light light; 2183 synchronized (mLock) { 2184 if (!mSystemReady) { 2185 return; 2186 } 2187 light = mAttentionLight; 2188 } 2189 2190 // Control light outside of lock. 2191 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 2192 } 2193 2194 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 2195 synchronized (mLock) { 2196 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 2197 mScreenBrightnessOverrideFromWindowManager = brightness; 2198 mDirty |= DIRTY_SETTINGS; 2199 updatePowerStateLocked(); 2200 } 2201 } 2202 } 2203 2204 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 2205 synchronized (mLock) { 2206 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 2207 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 2208 mDirty |= DIRTY_SETTINGS; 2209 updatePowerStateLocked(); 2210 } 2211 } 2212 } 2213 2214 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2215 synchronized (mLock) { 2216 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2217 mTemporaryScreenBrightnessSettingOverride = brightness; 2218 mDirty |= DIRTY_SETTINGS; 2219 updatePowerStateLocked(); 2220 } 2221 } 2222 } 2223 2224 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2225 synchronized (mLock) { 2226 // Note: This condition handles NaN because NaN is not equal to any other 2227 // value, including itself. 2228 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2229 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2230 mDirty |= DIRTY_SETTINGS; 2231 updatePowerStateLocked(); 2232 } 2233 } 2234 } 2235 2236 private void setDozeOverrideFromDreamManagerInternal( 2237 int screenState, int screenBrightness) { 2238 synchronized (mLock) { 2239 if (mDozeScreenStateOverrideFromDreamManager != screenState 2240 || mDozeScreenBrightnessOverrideFromDreamManager != screenBrightness) { 2241 mDozeScreenStateOverrideFromDreamManager = screenState; 2242 mDozeScreenBrightnessOverrideFromDreamManager = screenBrightness; 2243 mDirty |= DIRTY_SETTINGS; 2244 updatePowerStateLocked(); 2245 } 2246 } 2247 } 2248 2249 private void powerHintInternal(int hintId, int data) { 2250 nativeSendPowerHint(hintId, data); 2251 } 2252 2253 /** 2254 * Low-level function turn the device off immediately, without trying 2255 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2256 */ 2257 public static void lowLevelShutdown() { 2258 SystemProperties.set("sys.powerctl", "shutdown"); 2259 } 2260 2261 /** 2262 * Low-level function to reboot the device. On success, this 2263 * function doesn't return. If more than 20 seconds passes from 2264 * the time a reboot is requested (120 seconds for reboot to 2265 * recovery), this method returns. 2266 * 2267 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2268 */ 2269 public static void lowLevelReboot(String reason) { 2270 if (reason == null) { 2271 reason = ""; 2272 } 2273 long duration; 2274 if (reason.equals(PowerManager.REBOOT_RECOVERY)) { 2275 // If we are rebooting to go into recovery, instead of 2276 // setting sys.powerctl directly we'll start the 2277 // pre-recovery service which will do some preparation for 2278 // recovery and then reboot for us. 2279 // 2280 // This preparation can take more than 20 seconds if 2281 // there's a very large update package, so lengthen the 2282 // timeout. 2283 SystemProperties.set("ctl.start", "pre-recovery"); 2284 duration = 120 * 1000L; 2285 } else { 2286 SystemProperties.set("sys.powerctl", "reboot," + reason); 2287 duration = 20 * 1000L; 2288 } 2289 try { 2290 Thread.sleep(duration); 2291 } catch (InterruptedException e) { 2292 Thread.currentThread().interrupt(); 2293 } 2294 } 2295 2296 @Override // Watchdog.Monitor implementation 2297 public void monitor() { 2298 // Grab and release lock for watchdog monitor to detect deadlocks. 2299 synchronized (mLock) { 2300 } 2301 } 2302 2303 private void dumpInternal(PrintWriter pw) { 2304 pw.println("POWER MANAGER (dumpsys power)\n"); 2305 2306 final WirelessChargerDetector wcd; 2307 synchronized (mLock) { 2308 pw.println("Power Manager State:"); 2309 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2310 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2311 pw.println(" mInteractive=" + mInteractive); 2312 pw.println(" mIsPowered=" + mIsPowered); 2313 pw.println(" mPlugType=" + mPlugType); 2314 pw.println(" mBatteryLevel=" + mBatteryLevel); 2315 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2316 pw.println(" mDockState=" + mDockState); 2317 pw.println(" mStayOn=" + mStayOn); 2318 pw.println(" mProximityPositive=" + mProximityPositive); 2319 pw.println(" mBootCompleted=" + mBootCompleted); 2320 pw.println(" mSystemReady=" + mSystemReady); 2321 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2322 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2323 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2324 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2325 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2326 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2327 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2328 pw.println(" mLowPowerModeEnabled=" + mLowPowerModeEnabled); 2329 pw.println(" mBatteryLevelLow=" + mBatteryLevelLow); 2330 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2331 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2332 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2333 pw.println(" mLastUserActivityTimeNoChangeLights=" 2334 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2335 pw.println(" mLastInteractivePowerHintTime=" 2336 + TimeUtils.formatUptime(mLastInteractivePowerHintTime)); 2337 pw.println(" mDisplayReady=" + mDisplayReady); 2338 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2339 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2340 2341 pw.println(); 2342 pw.println("Settings and Configuration:"); 2343 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2344 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2345 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2346 + mDecoupleHalInteractiveModeFromDisplayConfig); 2347 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2348 + mWakeUpWhenPluggedOrUnpluggedConfig); 2349 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2350 + mSuspendWhenScreenOffDueToProximityConfig); 2351 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2352 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2353 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2354 + mDreamsActivatedOnSleepByDefaultConfig); 2355 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2356 + mDreamsActivatedOnDockByDefaultConfig); 2357 pw.println(" mDreamsEnabledOnBatteryConfig=" 2358 + mDreamsEnabledOnBatteryConfig); 2359 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2360 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2361 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2362 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2363 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2364 + mDreamsBatteryLevelDrainCutoffConfig); 2365 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2366 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2367 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2368 pw.println(" mLowPowerModeSetting=" + mLowPowerModeSetting); 2369 pw.println(" mAutoLowPowerModeEnabled=" + mAutoLowPowerModeEnabled); 2370 pw.println(" mAutoLowPowerModeSnoozing=" + mAutoLowPowerModeSnoozing); 2371 pw.println(" mMinimumScreenOffTimeoutConfig=" + mMinimumScreenOffTimeoutConfig); 2372 pw.println(" mMaximumScreenDimDurationConfig=" + mMaximumScreenDimDurationConfig); 2373 pw.println(" mMaximumScreenDimRatioConfig=" + mMaximumScreenDimRatioConfig); 2374 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2375 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2376 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2377 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2378 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2379 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2380 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2381 + mScreenAutoBrightnessAdjustmentSetting); 2382 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2383 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2384 + mScreenBrightnessOverrideFromWindowManager); 2385 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2386 + mUserActivityTimeoutOverrideFromWindowManager); 2387 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2388 + mTemporaryScreenBrightnessSettingOverride); 2389 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2390 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2391 pw.println(" mDozeScreenStateOverrideFromDreamManager=" 2392 + mDozeScreenStateOverrideFromDreamManager); 2393 pw.println(" mDozeScreenBrightnessOverrideFromDreamManager=" 2394 + mDozeScreenBrightnessOverrideFromDreamManager); 2395 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2396 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2397 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2398 2399 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2400 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2401 pw.println(); 2402 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2403 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2404 2405 pw.println(); 2406 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2407 for (WakeLock wl : mWakeLocks) { 2408 pw.println(" " + wl); 2409 } 2410 2411 pw.println(); 2412 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2413 for (SuspendBlocker sb : mSuspendBlockers) { 2414 pw.println(" " + sb); 2415 } 2416 2417 pw.println(); 2418 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2419 2420 pw.println(); 2421 pw.println("Display Power: " + mDisplayPowerCallbacks); 2422 2423 wcd = mWirelessChargerDetector; 2424 } 2425 2426 if (wcd != null) { 2427 wcd.dump(pw); 2428 } 2429 } 2430 2431 private SuspendBlocker createSuspendBlockerLocked(String name) { 2432 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2433 mSuspendBlockers.add(suspendBlocker); 2434 return suspendBlocker; 2435 } 2436 2437 private static String wakefulnessToString(int wakefulness) { 2438 switch (wakefulness) { 2439 case WAKEFULNESS_ASLEEP: 2440 return "Asleep"; 2441 case WAKEFULNESS_AWAKE: 2442 return "Awake"; 2443 case WAKEFULNESS_DREAMING: 2444 return "Dreaming"; 2445 case WAKEFULNESS_DOZING: 2446 return "Dozing"; 2447 default: 2448 return Integer.toString(wakefulness); 2449 } 2450 } 2451 2452 private static WorkSource copyWorkSource(WorkSource workSource) { 2453 return workSource != null ? new WorkSource(workSource) : null; 2454 } 2455 2456 private final class BatteryReceiver extends BroadcastReceiver { 2457 @Override 2458 public void onReceive(Context context, Intent intent) { 2459 synchronized (mLock) { 2460 handleBatteryStateChangedLocked(); 2461 } 2462 } 2463 } 2464 2465 private final class DreamReceiver extends BroadcastReceiver { 2466 @Override 2467 public void onReceive(Context context, Intent intent) { 2468 synchronized (mLock) { 2469 scheduleSandmanLocked(); 2470 } 2471 } 2472 } 2473 2474 private final class UserSwitchedReceiver extends BroadcastReceiver { 2475 @Override 2476 public void onReceive(Context context, Intent intent) { 2477 synchronized (mLock) { 2478 handleSettingsChangedLocked(); 2479 } 2480 } 2481 } 2482 2483 private final class DockReceiver extends BroadcastReceiver { 2484 @Override 2485 public void onReceive(Context context, Intent intent) { 2486 synchronized (mLock) { 2487 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2488 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2489 if (mDockState != dockState) { 2490 mDockState = dockState; 2491 mDirty |= DIRTY_DOCK_STATE; 2492 updatePowerStateLocked(); 2493 } 2494 } 2495 } 2496 } 2497 2498 private final class SettingsObserver extends ContentObserver { 2499 public SettingsObserver(Handler handler) { 2500 super(handler); 2501 } 2502 2503 @Override 2504 public void onChange(boolean selfChange, Uri uri) { 2505 synchronized (mLock) { 2506 handleSettingsChangedLocked(); 2507 } 2508 } 2509 } 2510 2511 /** 2512 * Handler for asynchronous operations performed by the power manager. 2513 */ 2514 private final class PowerManagerHandler extends Handler { 2515 public PowerManagerHandler(Looper looper) { 2516 super(looper, null, true /*async*/); 2517 } 2518 2519 @Override 2520 public void handleMessage(Message msg) { 2521 switch (msg.what) { 2522 case MSG_USER_ACTIVITY_TIMEOUT: 2523 handleUserActivityTimeout(); 2524 break; 2525 case MSG_SANDMAN: 2526 handleSandman(); 2527 break; 2528 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2529 handleScreenOnBlockerReleased(); 2530 break; 2531 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2532 checkIfBootAnimationFinished(); 2533 break; 2534 } 2535 } 2536 } 2537 2538 /** 2539 * Represents a wake lock that has been acquired by an application. 2540 */ 2541 private final class WakeLock implements IBinder.DeathRecipient { 2542 public final IBinder mLock; 2543 public int mFlags; 2544 public String mTag; 2545 public final String mPackageName; 2546 public WorkSource mWorkSource; 2547 public String mHistoryTag; 2548 public final int mOwnerUid; 2549 public final int mOwnerPid; 2550 public boolean mNotifiedAcquired; 2551 2552 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2553 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2554 mLock = lock; 2555 mFlags = flags; 2556 mTag = tag; 2557 mPackageName = packageName; 2558 mWorkSource = copyWorkSource(workSource); 2559 mHistoryTag = historyTag; 2560 mOwnerUid = ownerUid; 2561 mOwnerPid = ownerPid; 2562 } 2563 2564 @Override 2565 public void binderDied() { 2566 PowerManagerService.this.handleWakeLockDeath(this); 2567 } 2568 2569 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2570 int ownerUid, int ownerPid) { 2571 return mFlags == flags 2572 && mTag.equals(tag) 2573 && hasSameWorkSource(workSource) 2574 && mOwnerUid == ownerUid 2575 && mOwnerPid == ownerPid; 2576 } 2577 2578 public void updateProperties(int flags, String tag, String packageName, 2579 WorkSource workSource, String historyTag, int ownerUid, int ownerPid) { 2580 if (!mPackageName.equals(packageName)) { 2581 throw new IllegalStateException("Existing wake lock package name changed: " 2582 + mPackageName + " to " + packageName); 2583 } 2584 if (mOwnerUid != ownerUid) { 2585 throw new IllegalStateException("Existing wake lock uid changed: " 2586 + mOwnerUid + " to " + ownerUid); 2587 } 2588 if (mOwnerPid != ownerPid) { 2589 throw new IllegalStateException("Existing wake lock pid changed: " 2590 + mOwnerPid + " to " + ownerPid); 2591 } 2592 mFlags = flags; 2593 mTag = tag; 2594 updateWorkSource(workSource); 2595 mHistoryTag = historyTag; 2596 } 2597 2598 public boolean hasSameWorkSource(WorkSource workSource) { 2599 return Objects.equal(mWorkSource, workSource); 2600 } 2601 2602 public void updateWorkSource(WorkSource workSource) { 2603 mWorkSource = copyWorkSource(workSource); 2604 } 2605 2606 @Override 2607 public String toString() { 2608 return getLockLevelString() 2609 + " '" + mTag + "'" + getLockFlagsString() 2610 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2611 } 2612 2613 @SuppressWarnings("deprecation") 2614 private String getLockLevelString() { 2615 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2616 case PowerManager.FULL_WAKE_LOCK: 2617 return "FULL_WAKE_LOCK "; 2618 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2619 return "SCREEN_BRIGHT_WAKE_LOCK "; 2620 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2621 return "SCREEN_DIM_WAKE_LOCK "; 2622 case PowerManager.PARTIAL_WAKE_LOCK: 2623 return "PARTIAL_WAKE_LOCK "; 2624 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2625 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2626 case PowerManager.DOZE_WAKE_LOCK: 2627 return "DOZE_WAKE_LOCK "; 2628 default: 2629 return "??? "; 2630 } 2631 } 2632 2633 private String getLockFlagsString() { 2634 String result = ""; 2635 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2636 result += " ACQUIRE_CAUSES_WAKEUP"; 2637 } 2638 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2639 result += " ON_AFTER_RELEASE"; 2640 } 2641 return result; 2642 } 2643 } 2644 2645 private final class SuspendBlockerImpl implements SuspendBlocker { 2646 private final String mName; 2647 private final String mTraceName; 2648 private int mReferenceCount; 2649 2650 public SuspendBlockerImpl(String name) { 2651 mName = name; 2652 mTraceName = "SuspendBlocker (" + name + ")"; 2653 } 2654 2655 @Override 2656 protected void finalize() throws Throwable { 2657 try { 2658 if (mReferenceCount != 0) { 2659 Slog.wtf(TAG, "Suspend blocker \"" + mName 2660 + "\" was finalized without being released!"); 2661 mReferenceCount = 0; 2662 nativeReleaseSuspendBlocker(mName); 2663 Trace.asyncTraceEnd(Trace.TRACE_TAG_POWER, mTraceName, 0); 2664 } 2665 } finally { 2666 super.finalize(); 2667 } 2668 } 2669 2670 @Override 2671 public void acquire() { 2672 synchronized (this) { 2673 mReferenceCount += 1; 2674 if (mReferenceCount == 1) { 2675 if (DEBUG_SPEW) { 2676 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2677 } 2678 Trace.asyncTraceBegin(Trace.TRACE_TAG_POWER, mTraceName, 0); 2679 nativeAcquireSuspendBlocker(mName); 2680 } 2681 } 2682 } 2683 2684 @Override 2685 public void release() { 2686 synchronized (this) { 2687 mReferenceCount -= 1; 2688 if (mReferenceCount == 0) { 2689 if (DEBUG_SPEW) { 2690 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2691 } 2692 nativeReleaseSuspendBlocker(mName); 2693 Trace.asyncTraceEnd(Trace.TRACE_TAG_POWER, mTraceName, 0); 2694 } else if (mReferenceCount < 0) { 2695 Slog.wtf(TAG, "Suspend blocker \"" + mName 2696 + "\" was released without being acquired!", new Throwable()); 2697 mReferenceCount = 0; 2698 } 2699 } 2700 } 2701 2702 @Override 2703 public String toString() { 2704 synchronized (this) { 2705 return mName + ": ref count=" + mReferenceCount; 2706 } 2707 } 2708 } 2709 2710 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2711 private static final String TRACE_NAME = "ScreenOnBlocker"; 2712 2713 private int mNestCount; 2714 2715 public boolean isHeld() { 2716 synchronized (this) { 2717 return mNestCount != 0; 2718 } 2719 } 2720 2721 @Override 2722 public void acquire() { 2723 synchronized (this) { 2724 mNestCount += 1; 2725 if (DEBUG || true) { 2726 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2727 } 2728 if (mNestCount == 1) { 2729 Trace.asyncTraceBegin(Trace.TRACE_TAG_POWER, TRACE_NAME, 0); 2730 } 2731 } 2732 } 2733 2734 @Override 2735 public void release() { 2736 synchronized (this) { 2737 mNestCount -= 1; 2738 if (mNestCount == 0) { 2739 if (DEBUG || true) { 2740 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2741 } 2742 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2743 Trace.asyncTraceEnd(Trace.TRACE_TAG_POWER, TRACE_NAME, 0); 2744 } else if (mNestCount < 0) { 2745 Slog.wtf(TAG, "Screen on blocker was released without being acquired!", 2746 new Throwable()); 2747 mNestCount = 0; 2748 } 2749 } 2750 } 2751 2752 @Override 2753 public String toString() { 2754 synchronized (this) { 2755 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2756 } 2757 } 2758 } 2759 2760 private final class BinderService extends IPowerManager.Stub { 2761 @Override // Binder call 2762 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2763 String packageName, int uid) { 2764 if (uid < 0) { 2765 uid = Binder.getCallingUid(); 2766 } 2767 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid), null); 2768 } 2769 2770 @Override // Binder call 2771 public void powerHint(int hintId, int data) { 2772 if (!mSystemReady) { 2773 // Service not ready yet, so who the heck cares about power hints, bah. 2774 return; 2775 } 2776 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2777 powerHintInternal(hintId, data); 2778 } 2779 2780 @Override // Binder call 2781 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2782 WorkSource ws, String historyTag) { 2783 if (lock == null) { 2784 throw new IllegalArgumentException("lock must not be null"); 2785 } 2786 if (packageName == null) { 2787 throw new IllegalArgumentException("packageName must not be null"); 2788 } 2789 PowerManager.validateWakeLockParameters(flags, tag); 2790 2791 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2792 if ((flags & PowerManager.DOZE_WAKE_LOCK) != 0) { 2793 mContext.enforceCallingOrSelfPermission( 2794 android.Manifest.permission.DEVICE_POWER, null); 2795 } 2796 if (ws != null && ws.size() != 0) { 2797 mContext.enforceCallingOrSelfPermission( 2798 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2799 } else { 2800 ws = null; 2801 } 2802 2803 final int uid = Binder.getCallingUid(); 2804 final int pid = Binder.getCallingPid(); 2805 final long ident = Binder.clearCallingIdentity(); 2806 try { 2807 acquireWakeLockInternal(lock, flags, tag, packageName, ws, historyTag, uid, pid); 2808 } finally { 2809 Binder.restoreCallingIdentity(ident); 2810 } 2811 } 2812 2813 @Override // Binder call 2814 public void releaseWakeLock(IBinder lock, int flags) { 2815 if (lock == null) { 2816 throw new IllegalArgumentException("lock must not be null"); 2817 } 2818 2819 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2820 2821 final long ident = Binder.clearCallingIdentity(); 2822 try { 2823 releaseWakeLockInternal(lock, flags); 2824 } finally { 2825 Binder.restoreCallingIdentity(ident); 2826 } 2827 } 2828 2829 @Override // Binder call 2830 public void updateWakeLockUids(IBinder lock, int[] uids) { 2831 WorkSource ws = null; 2832 2833 if (uids != null) { 2834 ws = new WorkSource(); 2835 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2836 // one at a time? 2837 for (int i = 0; i < uids.length; i++) { 2838 ws.add(uids[i]); 2839 } 2840 } 2841 updateWakeLockWorkSource(lock, ws, null); 2842 } 2843 2844 @Override // Binder call 2845 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws, String historyTag) { 2846 if (lock == null) { 2847 throw new IllegalArgumentException("lock must not be null"); 2848 } 2849 2850 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2851 if (ws != null && ws.size() != 0) { 2852 mContext.enforceCallingOrSelfPermission( 2853 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2854 } else { 2855 ws = null; 2856 } 2857 2858 final int callingUid = Binder.getCallingUid(); 2859 final long ident = Binder.clearCallingIdentity(); 2860 try { 2861 updateWakeLockWorkSourceInternal(lock, ws, historyTag, callingUid); 2862 } finally { 2863 Binder.restoreCallingIdentity(ident); 2864 } 2865 } 2866 2867 @Override // Binder call 2868 public boolean isWakeLockLevelSupported(int level) { 2869 final long ident = Binder.clearCallingIdentity(); 2870 try { 2871 return isWakeLockLevelSupportedInternal(level); 2872 } finally { 2873 Binder.restoreCallingIdentity(ident); 2874 } 2875 } 2876 2877 @Override // Binder call 2878 public void userActivity(long eventTime, int event, int flags) { 2879 final long now = SystemClock.uptimeMillis(); 2880 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2881 != PackageManager.PERMISSION_GRANTED 2882 && mContext.checkCallingOrSelfPermission( 2883 android.Manifest.permission.USER_ACTIVITY) 2884 != PackageManager.PERMISSION_GRANTED) { 2885 // Once upon a time applications could call userActivity(). 2886 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2887 // request instead of throwing a SecurityException so we don't break old apps. 2888 synchronized (mLock) { 2889 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2890 mLastWarningAboutUserActivityPermission = now; 2891 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2892 + "caller does not have DEVICE_POWER or USER_ACTIVITY " 2893 + "permission. Please fix your app! " 2894 + " pid=" + Binder.getCallingPid() 2895 + " uid=" + Binder.getCallingUid()); 2896 } 2897 } 2898 return; 2899 } 2900 2901 if (eventTime > SystemClock.uptimeMillis()) { 2902 throw new IllegalArgumentException("event time must not be in the future"); 2903 } 2904 2905 final int uid = Binder.getCallingUid(); 2906 final long ident = Binder.clearCallingIdentity(); 2907 try { 2908 userActivityInternal(eventTime, event, flags, uid); 2909 } finally { 2910 Binder.restoreCallingIdentity(ident); 2911 } 2912 } 2913 2914 @Override // Binder call 2915 public void wakeUp(long eventTime) { 2916 if (eventTime > SystemClock.uptimeMillis()) { 2917 throw new IllegalArgumentException("event time must not be in the future"); 2918 } 2919 2920 mContext.enforceCallingOrSelfPermission( 2921 android.Manifest.permission.DEVICE_POWER, null); 2922 2923 final int uid = Binder.getCallingUid(); 2924 final long ident = Binder.clearCallingIdentity(); 2925 try { 2926 wakeUpInternal(eventTime, uid); 2927 } finally { 2928 Binder.restoreCallingIdentity(ident); 2929 } 2930 } 2931 2932 @Override // Binder call 2933 public void goToSleep(long eventTime, int reason, int flags) { 2934 if (eventTime > SystemClock.uptimeMillis()) { 2935 throw new IllegalArgumentException("event time must not be in the future"); 2936 } 2937 2938 mContext.enforceCallingOrSelfPermission( 2939 android.Manifest.permission.DEVICE_POWER, null); 2940 2941 final int uid = Binder.getCallingUid(); 2942 final long ident = Binder.clearCallingIdentity(); 2943 try { 2944 goToSleepInternal(eventTime, reason, flags, uid); 2945 } finally { 2946 Binder.restoreCallingIdentity(ident); 2947 } 2948 } 2949 2950 @Override // Binder call 2951 public void nap(long eventTime) { 2952 if (eventTime > SystemClock.uptimeMillis()) { 2953 throw new IllegalArgumentException("event time must not be in the future"); 2954 } 2955 2956 mContext.enforceCallingOrSelfPermission( 2957 android.Manifest.permission.DEVICE_POWER, null); 2958 2959 final int uid = Binder.getCallingUid(); 2960 final long ident = Binder.clearCallingIdentity(); 2961 try { 2962 napInternal(eventTime, uid); 2963 } finally { 2964 Binder.restoreCallingIdentity(ident); 2965 } 2966 } 2967 2968 @Override // Binder call 2969 public boolean isInteractive() { 2970 final long ident = Binder.clearCallingIdentity(); 2971 try { 2972 return isInteractiveInternal(); 2973 } finally { 2974 Binder.restoreCallingIdentity(ident); 2975 } 2976 } 2977 2978 @Override // Binder call 2979 public boolean isPowerSaveMode() { 2980 final long ident = Binder.clearCallingIdentity(); 2981 try { 2982 return isLowPowerModeInternal(); 2983 } finally { 2984 Binder.restoreCallingIdentity(ident); 2985 } 2986 } 2987 2988 /** 2989 * Reboots the device. 2990 * 2991 * @param confirm If true, shows a reboot confirmation dialog. 2992 * @param reason The reason for the reboot, or null if none. 2993 * @param wait If true, this call waits for the reboot to complete and does not return. 2994 */ 2995 @Override // Binder call 2996 public void reboot(boolean confirm, String reason, boolean wait) { 2997 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2998 if (PowerManager.REBOOT_RECOVERY.equals(reason)) { 2999 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.RECOVERY, null); 3000 } 3001 3002 final long ident = Binder.clearCallingIdentity(); 3003 try { 3004 shutdownOrRebootInternal(false, confirm, reason, wait); 3005 } finally { 3006 Binder.restoreCallingIdentity(ident); 3007 } 3008 } 3009 3010 /** 3011 * Shuts down the device. 3012 * 3013 * @param confirm If true, shows a shutdown confirmation dialog. 3014 * @param wait If true, this call waits for the shutdown to complete and does not return. 3015 */ 3016 @Override // Binder call 3017 public void shutdown(boolean confirm, boolean wait) { 3018 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 3019 3020 final long ident = Binder.clearCallingIdentity(); 3021 try { 3022 shutdownOrRebootInternal(true, confirm, null, wait); 3023 } finally { 3024 Binder.restoreCallingIdentity(ident); 3025 } 3026 } 3027 3028 /** 3029 * Crash the runtime (causing a complete restart of the Android framework). 3030 * Requires REBOOT permission. Mostly for testing. Should not return. 3031 */ 3032 @Override // Binder call 3033 public void crash(String message) { 3034 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 3035 3036 final long ident = Binder.clearCallingIdentity(); 3037 try { 3038 crashInternal(message); 3039 } finally { 3040 Binder.restoreCallingIdentity(ident); 3041 } 3042 } 3043 3044 /** 3045 * Set the setting that determines whether the device stays on when plugged in. 3046 * The argument is a bit string, with each bit specifying a power source that, 3047 * when the device is connected to that source, causes the device to stay on. 3048 * See {@link android.os.BatteryManager} for the list of power sources that 3049 * can be specified. Current values include 3050 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 3051 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 3052 * 3053 * Used by "adb shell svc power stayon ..." 3054 * 3055 * @param val an {@code int} containing the bits that specify which power sources 3056 * should cause the device to stay on. 3057 */ 3058 @Override // Binder call 3059 public void setStayOnSetting(int val) { 3060 mContext.enforceCallingOrSelfPermission( 3061 android.Manifest.permission.WRITE_SETTINGS, null); 3062 3063 final long ident = Binder.clearCallingIdentity(); 3064 try { 3065 setStayOnSettingInternal(val); 3066 } finally { 3067 Binder.restoreCallingIdentity(ident); 3068 } 3069 } 3070 3071 /** 3072 * Used by device administration to set the maximum screen off timeout. 3073 * 3074 * This method must only be called by the device administration policy manager. 3075 */ 3076 @Override // Binder call 3077 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 3078 final long ident = Binder.clearCallingIdentity(); 3079 try { 3080 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 3081 } finally { 3082 Binder.restoreCallingIdentity(ident); 3083 } 3084 } 3085 3086 /** 3087 * Used by the settings application and brightness control widgets to 3088 * temporarily override the current screen brightness setting so that the 3089 * user can observe the effect of an intended settings change without applying 3090 * it immediately. 3091 * 3092 * The override will be canceled when the setting value is next updated. 3093 * 3094 * @param brightness The overridden brightness. 3095 * 3096 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 3097 */ 3098 @Override // Binder call 3099 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 3100 mContext.enforceCallingOrSelfPermission( 3101 android.Manifest.permission.DEVICE_POWER, null); 3102 3103 final long ident = Binder.clearCallingIdentity(); 3104 try { 3105 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 3106 } finally { 3107 Binder.restoreCallingIdentity(ident); 3108 } 3109 } 3110 3111 /** 3112 * Used by the settings application and brightness control widgets to 3113 * temporarily override the current screen auto-brightness adjustment setting so that the 3114 * user can observe the effect of an intended settings change without applying 3115 * it immediately. 3116 * 3117 * The override will be canceled when the setting value is next updated. 3118 * 3119 * @param adj The overridden brightness, or Float.NaN to disable the override. 3120 * 3121 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 3122 */ 3123 @Override // Binder call 3124 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 3125 mContext.enforceCallingOrSelfPermission( 3126 android.Manifest.permission.DEVICE_POWER, null); 3127 3128 final long ident = Binder.clearCallingIdentity(); 3129 try { 3130 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 3131 } finally { 3132 Binder.restoreCallingIdentity(ident); 3133 } 3134 } 3135 3136 /** 3137 * Used by the phone application to make the attention LED flash when ringing. 3138 */ 3139 @Override // Binder call 3140 public void setAttentionLight(boolean on, int color) { 3141 mContext.enforceCallingOrSelfPermission( 3142 android.Manifest.permission.DEVICE_POWER, null); 3143 3144 final long ident = Binder.clearCallingIdentity(); 3145 try { 3146 setAttentionLightInternal(on, color); 3147 } finally { 3148 Binder.restoreCallingIdentity(ident); 3149 } 3150 } 3151 3152 @Override // Binder call 3153 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 3154 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 3155 != PackageManager.PERMISSION_GRANTED) { 3156 pw.println("Permission Denial: can't dump PowerManager from from pid=" 3157 + Binder.getCallingPid() 3158 + ", uid=" + Binder.getCallingUid()); 3159 return; 3160 } 3161 3162 final long ident = Binder.clearCallingIdentity(); 3163 try { 3164 dumpInternal(pw); 3165 } finally { 3166 Binder.restoreCallingIdentity(ident); 3167 } 3168 } 3169 } 3170 3171 private final class LocalService extends PowerManagerInternal { 3172 @Override 3173 public void setScreenBrightnessOverrideFromWindowManager(int screenBrightness) { 3174 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3175 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3176 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3177 } 3178 setScreenBrightnessOverrideFromWindowManagerInternal(screenBrightness); 3179 } 3180 3181 @Override 3182 public void setButtonBrightnessOverrideFromWindowManager(int screenBrightness) { 3183 // Do nothing. 3184 // Button lights are not currently supported in the new implementation. 3185 } 3186 3187 @Override 3188 public void setDozeOverrideFromDreamManager(int screenState, int screenBrightness) { 3189 switch (screenState) { 3190 case Display.STATE_UNKNOWN: 3191 case Display.STATE_OFF: 3192 case Display.STATE_DOZE: 3193 case Display.STATE_DOZE_SUSPEND: 3194 case Display.STATE_ON: 3195 break; 3196 default: 3197 screenState = Display.STATE_UNKNOWN; 3198 break; 3199 } 3200 if (screenBrightness < PowerManager.BRIGHTNESS_DEFAULT 3201 || screenBrightness > PowerManager.BRIGHTNESS_ON) { 3202 screenBrightness = PowerManager.BRIGHTNESS_DEFAULT; 3203 } 3204 setDozeOverrideFromDreamManagerInternal(screenState, screenBrightness); 3205 } 3206 3207 @Override 3208 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 3209 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 3210 } 3211 3212 @Override 3213 public boolean getLowPowerModeEnabled() { 3214 synchronized (mLock) { 3215 return mLowPowerModeEnabled; 3216 } 3217 } 3218 3219 @Override 3220 public void registerLowPowerModeObserver(LowPowerModeListener listener) { 3221 synchronized (mLock) { 3222 mLowPowerModeListeners.add(listener); 3223 } 3224 } 3225 } 3226} 3227