PowerManagerService.java revision 037c33eae74bee2774897d969d48947f9abe254f
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.server.BatteryService; 22import com.android.server.EventLogTags; 23import com.android.server.LocalServices; 24import com.android.server.ServiceThread; 25import com.android.server.lights.Light; 26import com.android.server.lights.LightsManager; 27import com.android.server.Watchdog; 28 29import android.Manifest; 30import android.content.BroadcastReceiver; 31import android.content.ContentResolver; 32import android.content.Context; 33import android.content.Intent; 34import android.content.IntentFilter; 35import android.content.pm.PackageManager; 36import android.content.res.Resources; 37import android.database.ContentObserver; 38import android.hardware.SensorManager; 39import android.hardware.SystemSensorManager; 40import android.hardware.display.DisplayManagerInternal; 41import android.hardware.display.DisplayManagerInternal.DisplayPowerRequest; 42import android.net.Uri; 43import android.os.BatteryManager; 44import android.os.Binder; 45import android.os.Handler; 46import android.os.IBinder; 47import android.os.IPowerManager; 48import android.os.Looper; 49import android.os.Message; 50import android.os.PowerManager; 51import android.os.PowerManagerInternal; 52import android.os.Process; 53import android.os.RemoteException; 54import android.os.SystemClock; 55import android.os.SystemProperties; 56import android.os.SystemService; 57import android.os.UserHandle; 58import android.os.WorkSource; 59import android.provider.Settings; 60import android.service.dreams.DreamManagerInternal; 61import android.util.EventLog; 62import android.util.Log; 63import android.util.Slog; 64import android.util.TimeUtils; 65import android.view.Display; 66import android.view.WindowManagerPolicy; 67 68import java.io.FileDescriptor; 69import java.io.PrintWriter; 70import java.util.ArrayList; 71 72import libcore.util.Objects; 73 74/** 75 * The power manager service is responsible for coordinating power management 76 * functions on the device. 77 */ 78public final class PowerManagerService extends com.android.server.SystemService 79 implements Watchdog.Monitor { 80 private static final String TAG = "PowerManagerService"; 81 82 private static final boolean DEBUG = false; 83 private static final boolean DEBUG_SPEW = DEBUG && true; 84 85 // Message: Sent when a user activity timeout occurs to update the power state. 86 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 87 // Message: Sent when the device enters or exits a dreaming or dozing state. 88 private static final int MSG_SANDMAN = 2; 89 // Message: Sent when the screen on blocker is released. 90 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 91 // Message: Sent to poll whether the boot animation has terminated. 92 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 93 94 // Dirty bit: mWakeLocks changed 95 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 96 // Dirty bit: mWakefulness changed 97 private static final int DIRTY_WAKEFULNESS = 1 << 1; 98 // Dirty bit: user activity was poked or may have timed out 99 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 100 // Dirty bit: actual display power state was updated asynchronously 101 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 102 // Dirty bit: mBootCompleted changed 103 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 104 // Dirty bit: settings changed 105 private static final int DIRTY_SETTINGS = 1 << 5; 106 // Dirty bit: mIsPowered changed 107 private static final int DIRTY_IS_POWERED = 1 << 6; 108 // Dirty bit: mStayOn changed 109 private static final int DIRTY_STAY_ON = 1 << 7; 110 // Dirty bit: battery state changed 111 private static final int DIRTY_BATTERY_STATE = 1 << 8; 112 // Dirty bit: proximity state changed 113 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 114 // Dirty bit: screen on blocker state became held or unheld 115 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 116 // Dirty bit: dock state changed 117 private static final int DIRTY_DOCK_STATE = 1 << 11; 118 119 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 120 // The screen should be off or in the process of being turned off by the display controller. 121 // The device typically passes through the dozing state first. 122 private static final int WAKEFULNESS_ASLEEP = 0; 123 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 124 // When the user activity timeout expires, the device may start dreaming or go to sleep. 125 private static final int WAKEFULNESS_AWAKE = 1; 126 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 127 // which ends the dream. The device goes to sleep when goToSleep() is called, when 128 // the dream ends or when unplugged. 129 // User activity may brighten the screen but does not end the dream. 130 private static final int WAKEFULNESS_DREAMING = 2; 131 // Wakefulness: The device is dozing. It is almost asleep but is allowing a special 132 // low-power "doze" dream to run which keeps the display on but lets the application 133 // processor be suspended. It can be awoken by a call to wakeUp() which ends the dream. 134 // The device fully goes to sleep if the dream cannot be started or ends on its own. 135 private static final int WAKEFULNESS_DOZING = 3; 136 137 // Summarizes the state of all active wakelocks. 138 private static final int WAKE_LOCK_CPU = 1 << 0; 139 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 140 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 141 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 142 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 143 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 144 private static final int WAKE_LOCK_DOZE = 1 << 6; 145 146 // Summarizes the user activity state. 147 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 148 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 149 150 // Default and minimum screen off timeout in milliseconds. 151 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 152 private static final int MINIMUM_SCREEN_OFF_TIMEOUT = 10 * 1000; 153 154 // The screen dim duration, in milliseconds. 155 // This is subtracted from the end of the screen off timeout so the 156 // minimum screen off timeout should be longer than this. 157 private static final int SCREEN_DIM_DURATION = 7 * 1000; 158 159 // The maximum screen dim time expressed as a ratio relative to the screen 160 // off timeout. If the screen off timeout is very short then we want the 161 // dim timeout to also be quite short so that most of the time is spent on. 162 // Otherwise the user won't get much screen on time before dimming occurs. 163 private static final float MAXIMUM_SCREEN_DIM_RATIO = 0.2f; 164 165 // The name of the boot animation service in init.rc. 166 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 167 168 // Poll interval in milliseconds for watching boot animation finished. 169 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 170 171 private final Context mContext; 172 private LightsManager mLightsManager; 173 private BatteryService mBatteryService; 174 private DisplayManagerInternal mDisplayManagerInternal; 175 private IBatteryStats mBatteryStats; 176 private IAppOpsService mAppOps; 177 private ServiceThread mHandlerThread; 178 private PowerManagerHandler mHandler; 179 private WindowManagerPolicy mPolicy; 180 private Notifier mNotifier; 181 private WirelessChargerDetector mWirelessChargerDetector; 182 private SettingsObserver mSettingsObserver; 183 private DreamManagerInternal mDreamManager; 184 private Light mAttentionLight; 185 186 private final Object mLock = new Object(); 187 188 // A bitfield that indicates what parts of the power state have 189 // changed and need to be recalculated. 190 private int mDirty; 191 192 // Indicates whether the device is awake or asleep or somewhere in between. 193 // This is distinct from the screen power state, which is managed separately. 194 private int mWakefulness; 195 196 // True if the sandman has just been summoned for the first time since entering the 197 // dreaming or dozing state. Indicates whether a new dream should begin. 198 private boolean mSandmanSummoned; 199 200 // True if MSG_SANDMAN has been scheduled. 201 private boolean mSandmanScheduled; 202 203 // Table of all suspend blockers. 204 // There should only be a few of these. 205 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 206 207 // Table of all wake locks acquired by applications. 208 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 209 210 // A bitfield that summarizes the state of all active wakelocks. 211 private int mWakeLockSummary; 212 213 // True if the device is in an interactive state. 214 private boolean mInteractive; 215 private boolean mInteractiveChanging; 216 217 // If true, instructs the display controller to wait for the proximity sensor to 218 // go negative before turning the screen on. 219 private boolean mRequestWaitForNegativeProximity; 220 221 // Timestamp of the last time the device was awoken or put to sleep. 222 private long mLastWakeTime; 223 private long mLastSleepTime; 224 225 // Timestamp of the last call to user activity. 226 private long mLastUserActivityTime; 227 private long mLastUserActivityTimeNoChangeLights; 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 screen off timeout setting value in milliseconds. 341 private int mScreenOffTimeoutSetting; 342 343 // The maximum allowable screen off timeout according to the device 344 // administration policy. Overrides other settings. 345 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 346 347 // The stay on while plugged in setting. 348 // A bitfield of battery conditions under which to make the screen stay on. 349 private int mStayOnWhilePluggedInSetting; 350 351 // True if the device should stay on. 352 private boolean mStayOn; 353 354 // True if the proximity sensor reads a positive result. 355 private boolean mProximityPositive; 356 357 // Screen brightness setting limits. 358 private int mScreenBrightnessSettingMinimum; 359 private int mScreenBrightnessSettingMaximum; 360 private int mScreenBrightnessSettingDefault; 361 362 // The screen brightness setting, from 0 to 255. 363 // Use -1 if no value has been set. 364 private int mScreenBrightnessSetting; 365 366 // The screen auto-brightness adjustment setting, from -1 to 1. 367 // Use 0 if there is no adjustment. 368 private float mScreenAutoBrightnessAdjustmentSetting; 369 370 // The screen brightness mode. 371 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 372 private int mScreenBrightnessModeSetting; 373 374 // The screen brightness setting override from the window manager 375 // to allow the current foreground activity to override the brightness. 376 // Use -1 to disable. 377 private int mScreenBrightnessOverrideFromWindowManager = -1; 378 379 // The user activity timeout override from the window manager 380 // to allow the current foreground activity to override the user activity timeout. 381 // Use -1 to disable. 382 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 383 384 // The screen brightness setting override from the settings application 385 // to temporarily adjust the brightness until next updated, 386 // Use -1 to disable. 387 private int mTemporaryScreenBrightnessSettingOverride = -1; 388 389 // The screen brightness adjustment setting override from the settings 390 // application to temporarily adjust the auto-brightness adjustment factor 391 // until next updated, in the range -1..1. 392 // Use NaN to disable. 393 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 394 395 // Time when we last logged a warning about calling userActivity() without permission. 396 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 397 398 private native void nativeInit(); 399 400 private static native void nativeAcquireSuspendBlocker(String name); 401 private static native void nativeReleaseSuspendBlocker(String name); 402 private static native void nativeSetInteractive(boolean enable); 403 private static native void nativeSetAutoSuspend(boolean enable); 404 405 public PowerManagerService(Context context) { 406 super(context); 407 mContext = context; 408 synchronized (mLock) { 409 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 410 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 411 mDisplaySuspendBlocker.acquire(); 412 mHoldingDisplaySuspendBlocker = true; 413 mHalAutoSuspendModeEnabled = false; 414 mHalInteractiveModeEnabled = true; 415 416 mScreenOnBlocker = new ScreenOnBlockerImpl(); 417 mWakefulness = WAKEFULNESS_AWAKE; 418 mInteractive = true; 419 420 nativeInit(); 421 nativeSetAutoSuspend(false); 422 nativeSetInteractive(true); 423 } 424 } 425 426 @Override 427 public void onStart() { 428 publishBinderService(Context.POWER_SERVICE, new BinderService()); 429 publishLocalService(PowerManagerInternal.class, new LocalService()); 430 } 431 432 /** 433 * Initialize the power manager. 434 * Must be called before any other functions within the power manager are called. 435 */ 436 public void init(LightsManager ls, 437 BatteryService bs, IBatteryStats bss, 438 IAppOpsService appOps) { 439 mLightsManager = ls; 440 mBatteryService = bs; 441 mBatteryStats = bss; 442 mAppOps = appOps; 443 mDisplayManagerInternal = getLocalService(DisplayManagerInternal.class); 444 mHandlerThread = new ServiceThread(TAG, 445 Process.THREAD_PRIORITY_DISPLAY, false /*allowIo*/); 446 mHandlerThread.start(); 447 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 448 449 Watchdog.getInstance().addMonitor(this); 450 Watchdog.getInstance().addThread(mHandler); 451 } 452 453 void setPolicy(WindowManagerPolicy policy) { 454 synchronized (mLock) { 455 mPolicy = policy; 456 } 457 } 458 459 public void systemReady() { 460 synchronized (mLock) { 461 mSystemReady = true; 462 mDreamManager = LocalServices.getService(DreamManagerInternal.class); 463 464 PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 465 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 466 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 467 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 468 469 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 470 471 // The notifier runs on the system server's main looper so as not to interfere 472 // with the animations and other critical functions of the power manager. 473 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 474 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 475 mScreenOnBlocker, mPolicy); 476 477 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 478 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 479 mHandler); 480 mSettingsObserver = new SettingsObserver(mHandler); 481 mAttentionLight = mLightsManager.getLight(LightsManager.LIGHT_ID_ATTENTION); 482 483 // Initialize display power management. 484 mDisplayManagerInternal.initPowerManagement( 485 mDisplayPowerCallbacks, mHandler, sensorManager); 486 487 // Register for broadcasts from other components of the system. 488 IntentFilter filter = new IntentFilter(); 489 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 490 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 491 492 filter = new IntentFilter(); 493 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 494 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 495 496 filter = new IntentFilter(); 497 filter.addAction(Intent.ACTION_DREAMING_STARTED); 498 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 499 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 500 501 filter = new IntentFilter(); 502 filter.addAction(Intent.ACTION_USER_SWITCHED); 503 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 504 505 filter = new IntentFilter(); 506 filter.addAction(Intent.ACTION_DOCK_EVENT); 507 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 508 509 // Register for settings changes. 510 final ContentResolver resolver = mContext.getContentResolver(); 511 resolver.registerContentObserver(Settings.Secure.getUriFor( 512 Settings.Secure.SCREENSAVER_ENABLED), 513 false, mSettingsObserver, UserHandle.USER_ALL); 514 resolver.registerContentObserver(Settings.Secure.getUriFor( 515 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 516 false, mSettingsObserver, UserHandle.USER_ALL); 517 resolver.registerContentObserver(Settings.Secure.getUriFor( 518 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 519 false, mSettingsObserver, UserHandle.USER_ALL); 520 resolver.registerContentObserver(Settings.System.getUriFor( 521 Settings.System.SCREEN_OFF_TIMEOUT), 522 false, mSettingsObserver, UserHandle.USER_ALL); 523 resolver.registerContentObserver(Settings.Global.getUriFor( 524 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 525 false, mSettingsObserver, UserHandle.USER_ALL); 526 resolver.registerContentObserver(Settings.System.getUriFor( 527 Settings.System.SCREEN_BRIGHTNESS), 528 false, mSettingsObserver, UserHandle.USER_ALL); 529 resolver.registerContentObserver(Settings.System.getUriFor( 530 Settings.System.SCREEN_BRIGHTNESS_MODE), 531 false, mSettingsObserver, UserHandle.USER_ALL); 532 533 // Go. 534 readConfigurationLocked(); 535 updateSettingsLocked(); 536 mDirty |= DIRTY_BATTERY_STATE; 537 updatePowerStateLocked(); 538 } 539 } 540 541 private void readConfigurationLocked() { 542 final Resources resources = mContext.getResources(); 543 544 mDecoupleHalAutoSuspendModeFromDisplayConfig = resources.getBoolean( 545 com.android.internal.R.bool.config_powerDecoupleAutoSuspendModeFromDisplay); 546 mDecoupleHalInteractiveModeFromDisplayConfig = resources.getBoolean( 547 com.android.internal.R.bool.config_powerDecoupleInteractiveModeFromDisplay); 548 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 549 com.android.internal.R.bool.config_unplugTurnsOnScreen); 550 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 551 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 552 mDreamsSupportedConfig = resources.getBoolean( 553 com.android.internal.R.bool.config_dreamsSupported); 554 mDreamsEnabledByDefaultConfig = resources.getBoolean( 555 com.android.internal.R.bool.config_dreamsEnabledByDefault); 556 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 557 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 558 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 559 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 560 mDreamsEnabledOnBatteryConfig = resources.getBoolean( 561 com.android.internal.R.bool.config_dreamsEnabledOnBattery); 562 mDreamsBatteryLevelMinimumWhenPoweredConfig = resources.getInteger( 563 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenPowered); 564 mDreamsBatteryLevelMinimumWhenNotPoweredConfig = resources.getInteger( 565 com.android.internal.R.integer.config_dreamsBatteryLevelMinimumWhenNotPowered); 566 mDreamsBatteryLevelDrainCutoffConfig = resources.getInteger( 567 com.android.internal.R.integer.config_dreamsBatteryLevelDrainCutoff); 568 } 569 570 private void updateSettingsLocked() { 571 final ContentResolver resolver = mContext.getContentResolver(); 572 573 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 574 Settings.Secure.SCREENSAVER_ENABLED, 575 mDreamsEnabledByDefaultConfig ? 1 : 0, 576 UserHandle.USER_CURRENT) != 0); 577 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 578 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 579 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 580 UserHandle.USER_CURRENT) != 0); 581 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 582 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 583 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 584 UserHandle.USER_CURRENT) != 0); 585 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 586 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 587 UserHandle.USER_CURRENT); 588 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 589 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 590 591 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 592 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 593 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 594 UserHandle.USER_CURRENT); 595 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 596 mTemporaryScreenBrightnessSettingOverride = -1; 597 } 598 599 final float oldScreenAutoBrightnessAdjustmentSetting = 600 mScreenAutoBrightnessAdjustmentSetting; 601 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 602 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 603 UserHandle.USER_CURRENT); 604 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 605 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 606 } 607 608 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 609 Settings.System.SCREEN_BRIGHTNESS_MODE, 610 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 611 612 mDirty |= DIRTY_SETTINGS; 613 } 614 615 private void handleSettingsChangedLocked() { 616 updateSettingsLocked(); 617 updatePowerStateLocked(); 618 } 619 620 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 621 WorkSource ws, int uid, int pid) { 622 synchronized (mLock) { 623 if (DEBUG_SPEW) { 624 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 625 + ", flags=0x" + Integer.toHexString(flags) 626 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 627 } 628 629 WakeLock wakeLock; 630 int index = findWakeLockIndexLocked(lock); 631 if (index >= 0) { 632 wakeLock = mWakeLocks.get(index); 633 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 634 // Update existing wake lock. This shouldn't happen but is harmless. 635 notifyWakeLockReleasedLocked(wakeLock); 636 wakeLock.updateProperties(flags, tag, packageName, ws, uid, pid); 637 notifyWakeLockAcquiredLocked(wakeLock); 638 } 639 } else { 640 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, uid, pid); 641 try { 642 lock.linkToDeath(wakeLock, 0); 643 } catch (RemoteException ex) { 644 throw new IllegalArgumentException("Wake lock is already dead."); 645 } 646 notifyWakeLockAcquiredLocked(wakeLock); 647 mWakeLocks.add(wakeLock); 648 } 649 650 applyWakeLockFlagsOnAcquireLocked(wakeLock); 651 mDirty |= DIRTY_WAKE_LOCKS; 652 updatePowerStateLocked(); 653 } 654 } 655 656 @SuppressWarnings("deprecation") 657 private static boolean isScreenLock(final WakeLock wakeLock) { 658 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 659 case PowerManager.FULL_WAKE_LOCK: 660 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 661 case PowerManager.SCREEN_DIM_WAKE_LOCK: 662 return true; 663 } 664 return false; 665 } 666 667 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 668 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 669 && isScreenLock(wakeLock)) { 670 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 671 } 672 } 673 674 private void releaseWakeLockInternal(IBinder lock, int flags) { 675 synchronized (mLock) { 676 int index = findWakeLockIndexLocked(lock); 677 if (index < 0) { 678 if (DEBUG_SPEW) { 679 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 680 + " [not found], flags=0x" + Integer.toHexString(flags)); 681 } 682 return; 683 } 684 685 WakeLock wakeLock = mWakeLocks.get(index); 686 if (DEBUG_SPEW) { 687 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 688 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 689 } 690 691 mWakeLocks.remove(index); 692 notifyWakeLockReleasedLocked(wakeLock); 693 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 694 695 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 696 mRequestWaitForNegativeProximity = true; 697 } 698 699 applyWakeLockFlagsOnReleaseLocked(wakeLock); 700 mDirty |= DIRTY_WAKE_LOCKS; 701 updatePowerStateLocked(); 702 } 703 } 704 705 private void handleWakeLockDeath(WakeLock wakeLock) { 706 synchronized (mLock) { 707 if (DEBUG_SPEW) { 708 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 709 + " [" + wakeLock.mTag + "]"); 710 } 711 712 int index = mWakeLocks.indexOf(wakeLock); 713 if (index < 0) { 714 return; 715 } 716 717 mWakeLocks.remove(index); 718 notifyWakeLockReleasedLocked(wakeLock); 719 720 applyWakeLockFlagsOnReleaseLocked(wakeLock); 721 mDirty |= DIRTY_WAKE_LOCKS; 722 updatePowerStateLocked(); 723 } 724 } 725 726 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 727 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 728 && isScreenLock(wakeLock)) { 729 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 730 PowerManager.USER_ACTIVITY_EVENT_OTHER, 731 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 732 wakeLock.mOwnerUid); 733 } 734 } 735 736 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws) { 737 synchronized (mLock) { 738 int index = findWakeLockIndexLocked(lock); 739 if (index < 0) { 740 if (DEBUG_SPEW) { 741 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 742 + " [not found], ws=" + ws); 743 } 744 throw new IllegalArgumentException("Wake lock not active"); 745 } 746 747 WakeLock wakeLock = mWakeLocks.get(index); 748 if (DEBUG_SPEW) { 749 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 750 + " [" + wakeLock.mTag + "], ws=" + ws); 751 } 752 753 if (!wakeLock.hasSameWorkSource(ws)) { 754 notifyWakeLockReleasedLocked(wakeLock); 755 wakeLock.updateWorkSource(ws); 756 notifyWakeLockAcquiredLocked(wakeLock); 757 } 758 } 759 } 760 761 private int findWakeLockIndexLocked(IBinder lock) { 762 final int count = mWakeLocks.size(); 763 for (int i = 0; i < count; i++) { 764 if (mWakeLocks.get(i).mLock == lock) { 765 return i; 766 } 767 } 768 return -1; 769 } 770 771 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 772 if (mSystemReady) { 773 wakeLock.mNotifiedAcquired = true; 774 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 775 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 776 } 777 } 778 779 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 780 if (mSystemReady && wakeLock.mNotifiedAcquired) { 781 wakeLock.mNotifiedAcquired = false; 782 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 783 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 784 } 785 } 786 787 @SuppressWarnings("deprecation") 788 private boolean isWakeLockLevelSupportedInternal(int level) { 789 synchronized (mLock) { 790 switch (level) { 791 case PowerManager.PARTIAL_WAKE_LOCK: 792 case PowerManager.SCREEN_DIM_WAKE_LOCK: 793 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 794 case PowerManager.FULL_WAKE_LOCK: 795 case PowerManager.DOZE_WAKE_LOCK: 796 return true; 797 798 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 799 return mSystemReady && mDisplayManagerInternal.isProximitySensorAvailable(); 800 801 default: 802 return false; 803 } 804 } 805 } 806 807 // Called from native code. 808 private void userActivityFromNative(long eventTime, int event, int flags) { 809 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 810 } 811 812 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 813 synchronized (mLock) { 814 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 815 updatePowerStateLocked(); 816 } 817 } 818 } 819 820 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 821 if (DEBUG_SPEW) { 822 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 823 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 824 + ", uid=" + uid); 825 } 826 827 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 828 || mWakefulness == WAKEFULNESS_ASLEEP || mWakefulness == WAKEFULNESS_DOZING 829 || !mBootCompleted || !mSystemReady) { 830 return false; 831 } 832 833 mNotifier.onUserActivity(event, uid); 834 835 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 836 if (eventTime > mLastUserActivityTimeNoChangeLights 837 && eventTime > mLastUserActivityTime) { 838 mLastUserActivityTimeNoChangeLights = eventTime; 839 mDirty |= DIRTY_USER_ACTIVITY; 840 return true; 841 } 842 } else { 843 if (eventTime > mLastUserActivityTime) { 844 mLastUserActivityTime = eventTime; 845 mDirty |= DIRTY_USER_ACTIVITY; 846 return true; 847 } 848 } 849 return false; 850 } 851 852 private void wakeUpInternal(long eventTime) { 853 synchronized (mLock) { 854 if (wakeUpNoUpdateLocked(eventTime)) { 855 updatePowerStateLocked(); 856 } 857 } 858 } 859 860 private boolean wakeUpNoUpdateLocked(long eventTime) { 861 if (DEBUG_SPEW) { 862 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 863 } 864 865 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 866 || !mBootCompleted || !mSystemReady) { 867 return false; 868 } 869 870 switch (mWakefulness) { 871 case WAKEFULNESS_ASLEEP: 872 Slog.i(TAG, "Waking up from sleep..."); 873 break; 874 case WAKEFULNESS_DREAMING: 875 Slog.i(TAG, "Waking up from dream..."); 876 break; 877 case WAKEFULNESS_DOZING: 878 Slog.i(TAG, "Waking up from dozing..."); 879 break; 880 } 881 882 mLastWakeTime = eventTime; 883 mDirty |= DIRTY_WAKEFULNESS; 884 mWakefulness = WAKEFULNESS_AWAKE; 885 setInteractiveStateLocked(true, 0); 886 887 userActivityNoUpdateLocked( 888 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 889 return true; 890 } 891 892 private void goToSleepInternal(long eventTime, int reason) { 893 synchronized (mLock) { 894 if (goToSleepNoUpdateLocked(eventTime, reason)) { 895 updatePowerStateLocked(); 896 } 897 } 898 } 899 900 // This method is called goToSleep for historical reasons but we actually start 901 // dozing before really going to sleep. 902 @SuppressWarnings("deprecation") 903 private boolean goToSleepNoUpdateLocked(long eventTime, int reason) { 904 if (DEBUG_SPEW) { 905 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime + ", reason=" + reason); 906 } 907 908 if (eventTime < mLastWakeTime 909 || mWakefulness == WAKEFULNESS_ASLEEP 910 || mWakefulness == WAKEFULNESS_DOZING 911 || !mBootCompleted || !mSystemReady) { 912 return false; 913 } 914 915 switch (reason) { 916 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 917 Slog.i(TAG, "Going to sleep due to device administration policy..."); 918 break; 919 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 920 Slog.i(TAG, "Going to sleep due to screen timeout..."); 921 break; 922 default: 923 Slog.i(TAG, "Going to sleep by user request..."); 924 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 925 break; 926 } 927 928 mLastSleepTime = eventTime; 929 mDirty |= DIRTY_WAKEFULNESS; 930 mWakefulness = WAKEFULNESS_DOZING; 931 mSandmanSummoned = true; 932 setInteractiveStateLocked(false, reason); 933 934 // Report the number of wake locks that will be cleared by going to sleep. 935 int numWakeLocksCleared = 0; 936 final int numWakeLocks = mWakeLocks.size(); 937 for (int i = 0; i < numWakeLocks; i++) { 938 final WakeLock wakeLock = mWakeLocks.get(i); 939 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 940 case PowerManager.FULL_WAKE_LOCK: 941 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 942 case PowerManager.SCREEN_DIM_WAKE_LOCK: 943 numWakeLocksCleared += 1; 944 break; 945 } 946 } 947 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 948 return true; 949 } 950 951 private void napInternal(long eventTime) { 952 synchronized (mLock) { 953 if (napNoUpdateLocked(eventTime)) { 954 updatePowerStateLocked(); 955 } 956 } 957 } 958 959 private boolean napNoUpdateLocked(long eventTime) { 960 if (DEBUG_SPEW) { 961 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 962 } 963 964 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 965 || !mBootCompleted || !mSystemReady) { 966 return false; 967 } 968 969 Slog.i(TAG, "Nap time..."); 970 971 mDirty |= DIRTY_WAKEFULNESS; 972 mWakefulness = WAKEFULNESS_DREAMING; 973 mSandmanSummoned = true; 974 setInteractiveStateLocked(true, 0); 975 return true; 976 } 977 978 // Done dozing, drop everything and go to sleep. 979 private boolean reallyGoToSleepNoUpdateLocked(long eventTime) { 980 if (DEBUG_SPEW) { 981 Slog.d(TAG, "reallyGoToSleepNoUpdateLocked: eventTime=" + eventTime); 982 } 983 984 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 985 || !mBootCompleted || !mSystemReady) { 986 return false; 987 } 988 989 Slog.i(TAG, "Sleeping..."); 990 991 mDirty |= DIRTY_WAKEFULNESS; 992 mWakefulness = WAKEFULNESS_ASLEEP; 993 setInteractiveStateLocked(false, PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 994 return true; 995 } 996 997 private void setInteractiveStateLocked(boolean interactive, int reason) { 998 if (mInteractive != interactive) { 999 finishInteractiveStateChangeLocked(); 1000 1001 mInteractive = interactive; 1002 mInteractiveChanging = true; 1003 mNotifier.onInteractiveStateChangeStarted(interactive, reason); 1004 } 1005 } 1006 1007 private void finishInteractiveStateChangeLocked() { 1008 if (mInteractiveChanging) { 1009 mNotifier.onInteractiveStateChangeFinished(mInteractive); 1010 mInteractiveChanging = false; 1011 } 1012 } 1013 1014 /** 1015 * Updates the global power state based on dirty bits recorded in mDirty. 1016 * 1017 * This is the main function that performs power state transitions. 1018 * We centralize them here so that we can recompute the power state completely 1019 * each time something important changes, and ensure that we do it the same 1020 * way each time. The point is to gather all of the transition logic here. 1021 */ 1022 private void updatePowerStateLocked() { 1023 if (!mSystemReady || mDirty == 0) { 1024 return; 1025 } 1026 if (!Thread.holdsLock(mLock)) { 1027 Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked"); 1028 } 1029 1030 // Phase 0: Basic state updates. 1031 updateIsPoweredLocked(mDirty); 1032 updateStayOnLocked(mDirty); 1033 1034 // Phase 1: Update wakefulness. 1035 // Loop because the wake lock and user activity computations are influenced 1036 // by changes in wakefulness. 1037 final long now = SystemClock.uptimeMillis(); 1038 int dirtyPhase2 = 0; 1039 for (;;) { 1040 int dirtyPhase1 = mDirty; 1041 dirtyPhase2 |= dirtyPhase1; 1042 mDirty = 0; 1043 1044 updateWakeLockSummaryLocked(dirtyPhase1); 1045 updateUserActivitySummaryLocked(now, dirtyPhase1); 1046 if (!updateWakefulnessLocked(dirtyPhase1)) { 1047 break; 1048 } 1049 } 1050 1051 // Phase 2: Update dreams and display power state. 1052 updateDreamLocked(dirtyPhase2); 1053 updateDisplayPowerStateLocked(dirtyPhase2); 1054 1055 // Phase 3: Send notifications, if needed. 1056 if (mDisplayReady) { 1057 finishInteractiveStateChangeLocked(); 1058 } 1059 1060 // Phase 4: Update suspend blocker. 1061 // Because we might release the last suspend blocker here, we need to make sure 1062 // we finished everything else first! 1063 updateSuspendBlockerLocked(); 1064 } 1065 1066 /** 1067 * Updates the value of mIsPowered. 1068 * Sets DIRTY_IS_POWERED if a change occurred. 1069 */ 1070 private void updateIsPoweredLocked(int dirty) { 1071 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1072 final boolean wasPowered = mIsPowered; 1073 final int oldPlugType = mPlugType; 1074 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1075 mPlugType = mBatteryService.getPlugType(); 1076 mBatteryLevel = mBatteryService.getBatteryLevel(); 1077 1078 if (DEBUG_SPEW) { 1079 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1080 + ", mIsPowered=" + mIsPowered 1081 + ", oldPlugType=" + oldPlugType 1082 + ", mPlugType=" + mPlugType 1083 + ", mBatteryLevel=" + mBatteryLevel); 1084 } 1085 1086 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1087 mDirty |= DIRTY_IS_POWERED; 1088 1089 // Update wireless dock detection state. 1090 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1091 mIsPowered, mPlugType, mBatteryLevel); 1092 1093 // Treat plugging and unplugging the devices as a user activity. 1094 // Users find it disconcerting when they plug or unplug the device 1095 // and it shuts off right away. 1096 // Some devices also wake the device when plugged or unplugged because 1097 // they don't have a charging LED. 1098 final long now = SystemClock.uptimeMillis(); 1099 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1100 dockedOnWirelessCharger)) { 1101 wakeUpNoUpdateLocked(now); 1102 } 1103 userActivityNoUpdateLocked( 1104 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1105 1106 // Tell the notifier whether wireless charging has started so that 1107 // it can provide feedback to the user. 1108 if (dockedOnWirelessCharger) { 1109 mNotifier.onWirelessChargingStarted(); 1110 } 1111 } 1112 } 1113 } 1114 1115 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1116 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1117 // Don't wake when powered unless configured to do so. 1118 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1119 return false; 1120 } 1121 1122 // Don't wake when undocked from wireless charger. 1123 // See WirelessChargerDetector for justification. 1124 if (wasPowered && !mIsPowered 1125 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1126 return false; 1127 } 1128 1129 // Don't wake when docked on wireless charger unless we are certain of it. 1130 // See WirelessChargerDetector for justification. 1131 if (!wasPowered && mIsPowered 1132 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1133 && !dockedOnWirelessCharger) { 1134 return false; 1135 } 1136 1137 // If already dreaming and becoming powered, then don't wake. 1138 if (mIsPowered && mWakefulness == WAKEFULNESS_DREAMING) { 1139 return false; 1140 } 1141 1142 // Otherwise wake up! 1143 return true; 1144 } 1145 1146 /** 1147 * Updates the value of mStayOn. 1148 * Sets DIRTY_STAY_ON if a change occurred. 1149 */ 1150 private void updateStayOnLocked(int dirty) { 1151 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1152 final boolean wasStayOn = mStayOn; 1153 if (mStayOnWhilePluggedInSetting != 0 1154 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1155 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1156 } else { 1157 mStayOn = false; 1158 } 1159 1160 if (mStayOn != wasStayOn) { 1161 mDirty |= DIRTY_STAY_ON; 1162 } 1163 } 1164 } 1165 1166 /** 1167 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1168 * Note that most wake-locks are ignored when the system is asleep. 1169 * 1170 * This function must have no other side-effects. 1171 */ 1172 @SuppressWarnings("deprecation") 1173 private void updateWakeLockSummaryLocked(int dirty) { 1174 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1175 mWakeLockSummary = 0; 1176 1177 final int numWakeLocks = mWakeLocks.size(); 1178 for (int i = 0; i < numWakeLocks; i++) { 1179 final WakeLock wakeLock = mWakeLocks.get(i); 1180 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1181 case PowerManager.PARTIAL_WAKE_LOCK: 1182 mWakeLockSummary |= WAKE_LOCK_CPU; 1183 break; 1184 case PowerManager.FULL_WAKE_LOCK: 1185 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1186 break; 1187 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1188 mWakeLockSummary |= WAKE_LOCK_SCREEN_BRIGHT; 1189 break; 1190 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1191 mWakeLockSummary |= WAKE_LOCK_SCREEN_DIM; 1192 break; 1193 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1194 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1195 break; 1196 case PowerManager.DOZE_WAKE_LOCK: 1197 mWakeLockSummary |= WAKE_LOCK_DOZE; 1198 break; 1199 } 1200 } 1201 1202 // Cancel wake locks that make no sense based on the current state. 1203 if (mWakefulness != WAKEFULNESS_DOZING) { 1204 mWakeLockSummary &= ~WAKE_LOCK_DOZE; 1205 } 1206 if (mWakefulness == WAKEFULNESS_ASLEEP 1207 || (mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1208 mWakeLockSummary &= ~(WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM 1209 | WAKE_LOCK_BUTTON_BRIGHT); 1210 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1211 mWakeLockSummary &= ~WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1212 } 1213 } 1214 1215 // Infer implied wake locks where necessary based on the current state. 1216 if ((mWakeLockSummary & (WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_SCREEN_DIM)) != 0) { 1217 if (mWakefulness == WAKEFULNESS_AWAKE) { 1218 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_STAY_AWAKE; 1219 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1220 mWakeLockSummary |= WAKE_LOCK_CPU; 1221 } 1222 } 1223 1224 if (DEBUG_SPEW) { 1225 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1226 + wakefulnessToString(mWakefulness) 1227 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1228 } 1229 } 1230 } 1231 1232 /** 1233 * Updates the value of mUserActivitySummary to summarize the user requested 1234 * state of the system such as whether the screen should be bright or dim. 1235 * Note that user activity is ignored when the system is asleep. 1236 * 1237 * This function must have no other side-effects. 1238 */ 1239 private void updateUserActivitySummaryLocked(long now, int dirty) { 1240 // Update the status of the user activity timeout timer. 1241 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY 1242 | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1243 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1244 1245 long nextTimeout = 0; 1246 if (mWakefulness == WAKEFULNESS_AWAKE 1247 || mWakefulness == WAKEFULNESS_DREAMING 1248 || mWakefulness == WAKEFULNESS_DOZING) { 1249 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1250 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1251 1252 mUserActivitySummary = 0; 1253 if (mLastUserActivityTime >= mLastWakeTime) { 1254 nextTimeout = mLastUserActivityTime 1255 + screenOffTimeout - screenDimDuration; 1256 if (now < nextTimeout) { 1257 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1258 } else { 1259 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1260 if (now < nextTimeout) { 1261 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1262 } 1263 } 1264 } 1265 if (mUserActivitySummary == 0 1266 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1267 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1268 if (now < nextTimeout 1269 && mDisplayPowerRequest.wantScreenOnNormal()) { 1270 mUserActivitySummary = mDisplayPowerRequest.screenState 1271 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1272 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1273 } 1274 } 1275 if (mUserActivitySummary != 0) { 1276 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1277 msg.setAsynchronous(true); 1278 mHandler.sendMessageAtTime(msg, nextTimeout); 1279 } 1280 } else { 1281 mUserActivitySummary = 0; 1282 } 1283 1284 if (DEBUG_SPEW) { 1285 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1286 + wakefulnessToString(mWakefulness) 1287 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1288 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1289 } 1290 } 1291 } 1292 1293 /** 1294 * Called when a user activity timeout has occurred. 1295 * Simply indicates that something about user activity has changed so that the new 1296 * state can be recomputed when the power state is updated. 1297 * 1298 * This function must have no other side-effects besides setting the dirty 1299 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1300 */ 1301 private void handleUserActivityTimeout() { // runs on handler thread 1302 synchronized (mLock) { 1303 if (DEBUG_SPEW) { 1304 Slog.d(TAG, "handleUserActivityTimeout"); 1305 } 1306 1307 mDirty |= DIRTY_USER_ACTIVITY; 1308 updatePowerStateLocked(); 1309 } 1310 } 1311 1312 private int getScreenOffTimeoutLocked() { 1313 int timeout = mScreenOffTimeoutSetting; 1314 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1315 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1316 } 1317 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1318 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1319 } 1320 return Math.max(timeout, MINIMUM_SCREEN_OFF_TIMEOUT); 1321 } 1322 1323 private int getScreenDimDurationLocked(int screenOffTimeout) { 1324 return Math.min(SCREEN_DIM_DURATION, 1325 (int)(screenOffTimeout * MAXIMUM_SCREEN_DIM_RATIO)); 1326 } 1327 1328 /** 1329 * Updates the wakefulness of the device. 1330 * 1331 * This is the function that decides whether the device should start dreaming 1332 * based on the current wake locks and user activity state. It may modify mDirty 1333 * if the wakefulness changes. 1334 * 1335 * Returns true if the wakefulness changed and we need to restart power state calculation. 1336 */ 1337 private boolean updateWakefulnessLocked(int dirty) { 1338 boolean changed = false; 1339 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1340 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1341 | DIRTY_DOCK_STATE)) != 0) { 1342 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1343 if (DEBUG_SPEW) { 1344 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1345 } 1346 final long time = SystemClock.uptimeMillis(); 1347 if (shouldNapAtBedTimeLocked()) { 1348 changed = napNoUpdateLocked(time); 1349 } else { 1350 changed = goToSleepNoUpdateLocked(time, 1351 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1352 } 1353 } 1354 } 1355 return changed; 1356 } 1357 1358 /** 1359 * Returns true if the device should automatically nap and start dreaming when the user 1360 * activity timeout has expired and it's bedtime. 1361 */ 1362 private boolean shouldNapAtBedTimeLocked() { 1363 return mDreamsActivateOnSleepSetting 1364 || (mDreamsActivateOnDockSetting 1365 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1366 } 1367 1368 /** 1369 * Returns true if the device should go to sleep now. 1370 * Also used when exiting a dream to determine whether we should go back 1371 * to being fully awake or else go to sleep for good. 1372 */ 1373 private boolean isItBedTimeYetLocked() { 1374 return mBootCompleted && !isBeingKeptAwakeLocked(); 1375 } 1376 1377 /** 1378 * Returns true if the device is being kept awake by a wake lock, user activity 1379 * or the stay on while powered setting. We also keep the phone awake when 1380 * the proximity sensor returns a positive result so that the device does not 1381 * lock while in a phone call. This function only controls whether the device 1382 * will go to sleep or dream which is independent of whether it will be allowed 1383 * to suspend. 1384 */ 1385 private boolean isBeingKeptAwakeLocked() { 1386 return mStayOn 1387 || mProximityPositive 1388 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1389 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1390 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1391 } 1392 1393 /** 1394 * Determines whether to post a message to the sandman to update the dream state. 1395 */ 1396 private void updateDreamLocked(int dirty) { 1397 if ((dirty & (DIRTY_WAKEFULNESS 1398 | DIRTY_USER_ACTIVITY 1399 | DIRTY_WAKE_LOCKS 1400 | DIRTY_BOOT_COMPLETED 1401 | DIRTY_SETTINGS 1402 | DIRTY_IS_POWERED 1403 | DIRTY_STAY_ON 1404 | DIRTY_PROXIMITY_POSITIVE 1405 | DIRTY_BATTERY_STATE)) != 0) { 1406 scheduleSandmanLocked(); 1407 } 1408 } 1409 1410 private void scheduleSandmanLocked() { 1411 if (!mSandmanScheduled) { 1412 mSandmanScheduled = true; 1413 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1414 msg.setAsynchronous(true); 1415 mHandler.sendMessage(msg); 1416 } 1417 } 1418 1419 /** 1420 * Called when the device enters or exits a dreaming or dozing state. 1421 * 1422 * We do this asynchronously because we must call out of the power manager to start 1423 * the dream and we don't want to hold our lock while doing so. There is a risk that 1424 * the device will wake or go to sleep in the meantime so we have to handle that case. 1425 */ 1426 private void handleSandman() { // runs on handler thread 1427 // Handle preconditions. 1428 final boolean startDreaming; 1429 final int wakefulness; 1430 synchronized (mLock) { 1431 mSandmanScheduled = false; 1432 wakefulness = mWakefulness; 1433 if (mSandmanSummoned) { 1434 startDreaming = ((wakefulness == WAKEFULNESS_DREAMING && canDreamLocked()) 1435 || wakefulness == WAKEFULNESS_DOZING); 1436 mSandmanSummoned = false; 1437 } else { 1438 startDreaming = false; 1439 } 1440 } 1441 1442 // Start dreaming if needed. 1443 // We only control the dream on the handler thread, so we don't need to worry about 1444 // concurrent attempts to start or stop the dream. 1445 final boolean isDreaming; 1446 if (mDreamManager != null) { 1447 // Restart the dream whenever the sandman is summoned. 1448 if (startDreaming) { 1449 mDreamManager.stopDream(); 1450 mDreamManager.startDream(wakefulness == WAKEFULNESS_DOZING); 1451 } 1452 isDreaming = mDreamManager.isDreaming(); 1453 } else { 1454 isDreaming = false; 1455 } 1456 1457 // Update dream state. 1458 synchronized (mLock) { 1459 // Remember the initial battery level when the dream started. 1460 if (startDreaming && isDreaming) { 1461 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1462 if (wakefulness == WAKEFULNESS_DOZING) { 1463 Slog.i(TAG, "Dozing..."); 1464 } else { 1465 Slog.i(TAG, "Dreaming..."); 1466 } 1467 } 1468 1469 // If preconditions changed, wait for the next iteration to determine 1470 // whether the dream should continue (or be restarted). 1471 if (mSandmanSummoned || mWakefulness != wakefulness) { 1472 return; // wait for next cycle 1473 } 1474 1475 // Determine whether the dream should continue. 1476 if (wakefulness == WAKEFULNESS_DREAMING) { 1477 if (isDreaming && canDreamLocked()) { 1478 if (mDreamsBatteryLevelDrainCutoffConfig >= 0 1479 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1480 - mDreamsBatteryLevelDrainCutoffConfig 1481 && !isBeingKeptAwakeLocked()) { 1482 // If the user activity timeout expired and the battery appears 1483 // to be draining faster than it is charging then stop dreaming 1484 // and go to sleep. 1485 Slog.i(TAG, "Stopping dream because the battery appears to " 1486 + "be draining faster than it is charging. " 1487 + "Battery level when dream started: " 1488 + mBatteryLevelWhenDreamStarted + "%. " 1489 + "Battery level now: " + mBatteryLevel + "%."); 1490 } else { 1491 return; // continue dreaming 1492 } 1493 } 1494 1495 // Dream has ended or will be stopped. Update the power state. 1496 if (isItBedTimeYetLocked()) { 1497 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1498 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1499 updatePowerStateLocked(); 1500 } else { 1501 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1502 updatePowerStateLocked(); 1503 } 1504 } else if (wakefulness == WAKEFULNESS_DOZING) { 1505 if (isDreaming) { 1506 return; // continue dozing 1507 } 1508 1509 // Doze has ended or will be stopped. Update the power state. 1510 reallyGoToSleepNoUpdateLocked(SystemClock.uptimeMillis()); 1511 updatePowerStateLocked(); 1512 } 1513 } 1514 1515 // Stop dream. 1516 if (isDreaming) { 1517 mDreamManager.stopDream(); 1518 } 1519 } 1520 1521 /** 1522 * Returns true if the device is allowed to dream in its current state. 1523 * This function is not called when dozing. 1524 */ 1525 private boolean canDreamLocked() { 1526 if (mWakefulness != WAKEFULNESS_DREAMING 1527 || !mDreamsSupportedConfig 1528 || !mDreamsEnabledSetting 1529 || !mDisplayPowerRequest.wantScreenOnNormal() 1530 || !mBootCompleted) { 1531 return false; 1532 } 1533 if (!isBeingKeptAwakeLocked()) { 1534 if (!mIsPowered && !mDreamsEnabledOnBatteryConfig) { 1535 return false; 1536 } 1537 if (!mIsPowered 1538 && mDreamsBatteryLevelMinimumWhenNotPoweredConfig >= 0 1539 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenNotPoweredConfig) { 1540 return false; 1541 } 1542 if (mIsPowered 1543 && mDreamsBatteryLevelMinimumWhenPoweredConfig >= 0 1544 && mBatteryLevel < mDreamsBatteryLevelMinimumWhenPoweredConfig) { 1545 return false; 1546 } 1547 } 1548 return true; 1549 } 1550 1551 private void handleScreenOnBlockerReleased() { 1552 synchronized (mLock) { 1553 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1554 updatePowerStateLocked(); 1555 } 1556 } 1557 1558 /** 1559 * Updates the display power state asynchronously. 1560 * When the update is finished, mDisplayReady will be set to true. The display 1561 * controller posts a message to tell us when the actual display power state 1562 * has been updated so we come back here to double-check and finish up. 1563 * 1564 * This function recalculates the display power state each time. 1565 */ 1566 private void updateDisplayPowerStateLocked(int dirty) { 1567 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1568 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1569 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1570 final int newScreenState = getDesiredScreenPowerStateLocked(); 1571 mDisplayPowerRequest.screenState = newScreenState; 1572 1573 int screenBrightness = mScreenBrightnessSettingDefault; 1574 float screenAutoBrightnessAdjustment = 0.0f; 1575 boolean autoBrightness = (mScreenBrightnessModeSetting == 1576 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1577 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1578 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1579 autoBrightness = false; 1580 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1581 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1582 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1583 screenBrightness = mScreenBrightnessSetting; 1584 } 1585 if (autoBrightness) { 1586 screenBrightness = mScreenBrightnessSettingDefault; 1587 if (isValidAutoBrightnessAdjustment( 1588 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1589 screenAutoBrightnessAdjustment = 1590 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1591 } else if (isValidAutoBrightnessAdjustment( 1592 mScreenAutoBrightnessAdjustmentSetting)) { 1593 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1594 } 1595 } 1596 screenBrightness = Math.max(Math.min(screenBrightness, 1597 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1598 screenAutoBrightnessAdjustment = Math.max(Math.min( 1599 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1600 mDisplayPowerRequest.screenBrightness = screenBrightness; 1601 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1602 screenAutoBrightnessAdjustment; 1603 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1604 1605 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1606 1607 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1608 1609 mDisplayReady = mDisplayManagerInternal.requestPowerState(mDisplayPowerRequest, 1610 mRequestWaitForNegativeProximity); 1611 mRequestWaitForNegativeProximity = false; 1612 1613 if (DEBUG_SPEW) { 1614 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1615 + ", newScreenState=" + newScreenState 1616 + ", mWakefulness=" + mWakefulness 1617 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1618 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1619 + ", mBootCompleted=" + mBootCompleted); 1620 } 1621 } 1622 } 1623 1624 private static boolean isValidBrightness(int value) { 1625 return value >= 0 && value <= 255; 1626 } 1627 1628 private static boolean isValidAutoBrightnessAdjustment(float value) { 1629 // Handles NaN by always returning false. 1630 return value >= -1.0f && value <= 1.0f; 1631 } 1632 1633 private int getDesiredScreenPowerStateLocked() { 1634 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1635 return DisplayPowerRequest.SCREEN_STATE_OFF; 1636 } 1637 1638 if ((mWakeLockSummary & WAKE_LOCK_DOZE) != 0) { 1639 return DisplayPowerRequest.SCREEN_STATE_DOZE; 1640 } 1641 1642 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1643 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1644 || !mBootCompleted) { 1645 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1646 } 1647 1648 return DisplayPowerRequest.SCREEN_STATE_DIM; 1649 } 1650 1651 private final DisplayManagerInternal.DisplayPowerCallbacks mDisplayPowerCallbacks = 1652 new DisplayManagerInternal.DisplayPowerCallbacks() { 1653 private int mDisplayState = Display.STATE_UNKNOWN; 1654 1655 @Override 1656 public void onStateChanged() { 1657 synchronized (mLock) { 1658 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1659 updatePowerStateLocked(); 1660 } 1661 } 1662 1663 @Override 1664 public void onProximityPositive() { 1665 synchronized (mLock) { 1666 mProximityPositive = true; 1667 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1668 updatePowerStateLocked(); 1669 } 1670 } 1671 1672 @Override 1673 public void onProximityNegative() { 1674 synchronized (mLock) { 1675 mProximityPositive = false; 1676 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1677 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1678 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1679 updatePowerStateLocked(); 1680 } 1681 } 1682 1683 @Override 1684 public void onDisplayStateChange(int state) { 1685 // This method is only needed to support legacy display blanking behavior 1686 // where the display's power state is coupled to suspend or to the power HAL. 1687 // The order of operations matters here. 1688 synchronized (mLock) { 1689 if (mDisplayState != state) { 1690 mDisplayState = state; 1691 if (state == Display.STATE_OFF) { 1692 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1693 setHalInteractiveModeLocked(false); 1694 } 1695 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1696 setHalAutoSuspendModeLocked(true); 1697 } 1698 } else { 1699 if (!mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1700 setHalAutoSuspendModeLocked(false); 1701 } 1702 if (!mDecoupleHalInteractiveModeFromDisplayConfig) { 1703 setHalInteractiveModeLocked(true); 1704 } 1705 } 1706 } 1707 } 1708 } 1709 1710 @Override 1711 public void acquireSuspendBlocker() { 1712 mDisplaySuspendBlocker.acquire(); 1713 } 1714 1715 @Override 1716 public void releaseSuspendBlocker() { 1717 mDisplaySuspendBlocker.release(); 1718 } 1719 1720 @Override 1721 public String toString() { 1722 synchronized (this) { 1723 return "state=" + Display.stateToString(mDisplayState); 1724 } 1725 } 1726 }; 1727 1728 private boolean shouldUseProximitySensorLocked() { 1729 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1730 } 1731 1732 /** 1733 * Updates the suspend blocker that keeps the CPU alive. 1734 * 1735 * This function must have no other side-effects. 1736 */ 1737 private void updateSuspendBlockerLocked() { 1738 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1739 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlockerLocked(); 1740 final boolean autoSuspend = !needDisplaySuspendBlocker; 1741 1742 // Disable auto-suspend if needed. 1743 if (!autoSuspend) { 1744 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1745 setHalAutoSuspendModeLocked(false); 1746 } 1747 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1748 setHalInteractiveModeLocked(true); 1749 } 1750 } 1751 1752 // First acquire suspend blockers if needed. 1753 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1754 mWakeLockSuspendBlocker.acquire(); 1755 mHoldingWakeLockSuspendBlocker = true; 1756 } 1757 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1758 mDisplaySuspendBlocker.acquire(); 1759 mHoldingDisplaySuspendBlocker = true; 1760 } 1761 1762 // Then release suspend blockers if needed. 1763 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1764 mWakeLockSuspendBlocker.release(); 1765 mHoldingWakeLockSuspendBlocker = false; 1766 } 1767 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1768 mDisplaySuspendBlocker.release(); 1769 mHoldingDisplaySuspendBlocker = false; 1770 } 1771 1772 // Enable auto-suspend if needed. 1773 if (autoSuspend) { 1774 if (mDecoupleHalInteractiveModeFromDisplayConfig) { 1775 setHalInteractiveModeLocked(false); 1776 } 1777 if (mDecoupleHalAutoSuspendModeFromDisplayConfig) { 1778 setHalAutoSuspendModeLocked(true); 1779 } 1780 } 1781 } 1782 1783 /** 1784 * Return true if we must keep a suspend blocker active on behalf of the display. 1785 * We do so if the screen is on or is in transition between states. 1786 */ 1787 private boolean needDisplaySuspendBlockerLocked() { 1788 if (!mDisplayReady) { 1789 return true; 1790 } 1791 if (mDisplayPowerRequest.wantScreenOnNormal()) { 1792 // If we asked for the screen to be on but it is off due to the proximity 1793 // sensor then we may suspend but only if the configuration allows it. 1794 // On some hardware it may not be safe to suspend because the proximity 1795 // sensor may not be correctly configured as a wake-up source. 1796 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1797 || !mSuspendWhenScreenOffDueToProximityConfig) { 1798 return true; 1799 } 1800 } 1801 // Let the system suspend if the screen is off or dozing. 1802 return false; 1803 } 1804 1805 private void setHalAutoSuspendModeLocked(boolean enable) { 1806 if (enable != mHalAutoSuspendModeEnabled) { 1807 if (DEBUG) { 1808 Slog.d(TAG, "Setting HAL auto-suspend mode to " + enable); 1809 } 1810 mHalAutoSuspendModeEnabled = enable; 1811 nativeSetAutoSuspend(enable); 1812 } 1813 } 1814 1815 private void setHalInteractiveModeLocked(boolean enable) { 1816 if (enable != mHalInteractiveModeEnabled) { 1817 if (DEBUG) { 1818 Slog.d(TAG, "Setting HAL interactive mode to " + enable); 1819 } 1820 mHalInteractiveModeEnabled = enable; 1821 nativeSetInteractive(enable); 1822 } 1823 } 1824 1825 private boolean isInteractiveInternal() { 1826 synchronized (mLock) { 1827 return mInteractive; 1828 } 1829 } 1830 1831 private void handleBatteryStateChangedLocked() { 1832 mDirty |= DIRTY_BATTERY_STATE; 1833 updatePowerStateLocked(); 1834 } 1835 1836 private void startWatchingForBootAnimationFinished() { 1837 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1838 } 1839 1840 private void checkIfBootAnimationFinished() { 1841 if (DEBUG) { 1842 Slog.d(TAG, "Check if boot animation finished..."); 1843 } 1844 1845 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1846 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1847 BOOT_ANIMATION_POLL_INTERVAL); 1848 return; 1849 } 1850 1851 synchronized (mLock) { 1852 if (!mBootCompleted) { 1853 Slog.i(TAG, "Boot animation finished."); 1854 handleBootCompletedLocked(); 1855 } 1856 } 1857 } 1858 1859 private void handleBootCompletedLocked() { 1860 final long now = SystemClock.uptimeMillis(); 1861 mBootCompleted = true; 1862 mDirty |= DIRTY_BOOT_COMPLETED; 1863 userActivityNoUpdateLocked( 1864 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1865 updatePowerStateLocked(); 1866 } 1867 1868 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1869 final String reason, boolean wait) { 1870 if (mHandler == null || !mSystemReady) { 1871 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1872 } 1873 1874 Runnable runnable = new Runnable() { 1875 @Override 1876 public void run() { 1877 synchronized (this) { 1878 if (shutdown) { 1879 ShutdownThread.shutdown(mContext, confirm); 1880 } else { 1881 ShutdownThread.reboot(mContext, reason, confirm); 1882 } 1883 } 1884 } 1885 }; 1886 1887 // ShutdownThread must run on a looper capable of displaying the UI. 1888 Message msg = Message.obtain(mHandler, runnable); 1889 msg.setAsynchronous(true); 1890 mHandler.sendMessage(msg); 1891 1892 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 1893 if (wait) { 1894 synchronized (runnable) { 1895 while (true) { 1896 try { 1897 runnable.wait(); 1898 } catch (InterruptedException e) { 1899 } 1900 } 1901 } 1902 } 1903 } 1904 1905 private void crashInternal(final String message) { 1906 Thread t = new Thread("PowerManagerService.crash()") { 1907 @Override 1908 public void run() { 1909 throw new RuntimeException(message); 1910 } 1911 }; 1912 try { 1913 t.start(); 1914 t.join(); 1915 } catch (InterruptedException e) { 1916 Log.wtf(TAG, e); 1917 } 1918 } 1919 1920 private void setStayOnSettingInternal(int val) { 1921 Settings.Global.putInt(mContext.getContentResolver(), 1922 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 1923 } 1924 1925 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 1926 synchronized (mLock) { 1927 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 1928 mDirty |= DIRTY_SETTINGS; 1929 updatePowerStateLocked(); 1930 } 1931 } 1932 1933 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 1934 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 1935 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 1936 } 1937 1938 private void setAttentionLightInternal(boolean on, int color) { 1939 Light light; 1940 synchronized (mLock) { 1941 if (!mSystemReady) { 1942 return; 1943 } 1944 light = mAttentionLight; 1945 } 1946 1947 // Control light outside of lock. 1948 light.setFlashing(color, Light.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 1949 } 1950 1951 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 1952 synchronized (mLock) { 1953 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 1954 mScreenBrightnessOverrideFromWindowManager = brightness; 1955 mDirty |= DIRTY_SETTINGS; 1956 updatePowerStateLocked(); 1957 } 1958 } 1959 } 1960 1961 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 1962 synchronized (mLock) { 1963 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 1964 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 1965 mDirty |= DIRTY_SETTINGS; 1966 updatePowerStateLocked(); 1967 } 1968 } 1969 } 1970 1971 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 1972 synchronized (mLock) { 1973 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 1974 mTemporaryScreenBrightnessSettingOverride = brightness; 1975 mDirty |= DIRTY_SETTINGS; 1976 updatePowerStateLocked(); 1977 } 1978 } 1979 } 1980 1981 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 1982 synchronized (mLock) { 1983 // Note: This condition handles NaN because NaN is not equal to any other 1984 // value, including itself. 1985 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 1986 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 1987 mDirty |= DIRTY_SETTINGS; 1988 updatePowerStateLocked(); 1989 } 1990 } 1991 } 1992 1993 /** 1994 * Low-level function turn the device off immediately, without trying 1995 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 1996 */ 1997 public static void lowLevelShutdown() { 1998 SystemProperties.set("sys.powerctl", "shutdown"); 1999 } 2000 2001 /** 2002 * Low-level function to reboot the device. On success, this function 2003 * doesn't return. If more than 5 seconds passes from the time, 2004 * a reboot is requested, this method returns. 2005 * 2006 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2007 */ 2008 public static void lowLevelReboot(String reason) { 2009 if (reason == null) { 2010 reason = ""; 2011 } 2012 SystemProperties.set("sys.powerctl", "reboot," + reason); 2013 try { 2014 Thread.sleep(20000); 2015 } catch (InterruptedException e) { 2016 Thread.currentThread().interrupt(); 2017 } 2018 } 2019 2020 @Override // Watchdog.Monitor implementation 2021 public void monitor() { 2022 // Grab and release lock for watchdog monitor to detect deadlocks. 2023 synchronized (mLock) { 2024 } 2025 } 2026 2027 private void dumpInternal(PrintWriter pw) { 2028 pw.println("POWER MANAGER (dumpsys power)\n"); 2029 2030 final WirelessChargerDetector wcd; 2031 synchronized (mLock) { 2032 pw.println("Power Manager State:"); 2033 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2034 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2035 pw.println(" mInteractive=" + mInteractive); 2036 pw.println(" mIsPowered=" + mIsPowered); 2037 pw.println(" mPlugType=" + mPlugType); 2038 pw.println(" mBatteryLevel=" + mBatteryLevel); 2039 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2040 pw.println(" mDockState=" + mDockState); 2041 pw.println(" mStayOn=" + mStayOn); 2042 pw.println(" mProximityPositive=" + mProximityPositive); 2043 pw.println(" mBootCompleted=" + mBootCompleted); 2044 pw.println(" mSystemReady=" + mSystemReady); 2045 pw.println(" mHalAutoSuspendModeEnabled=" + mHalAutoSuspendModeEnabled); 2046 pw.println(" mHalInteractiveModeEnabled=" + mHalInteractiveModeEnabled); 2047 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2048 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2049 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2050 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2051 pw.println(" mSandmanSummoned=" + mSandmanSummoned); 2052 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2053 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2054 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2055 pw.println(" mLastUserActivityTimeNoChangeLights=" 2056 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2057 pw.println(" mDisplayReady=" + mDisplayReady); 2058 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2059 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2060 2061 pw.println(); 2062 pw.println("Settings and Configuration:"); 2063 pw.println(" mDecoupleHalAutoSuspendModeFromDisplayConfig=" 2064 + mDecoupleHalAutoSuspendModeFromDisplayConfig); 2065 pw.println(" mDecoupleHalInteractiveModeFromDisplayConfig=" 2066 + mDecoupleHalInteractiveModeFromDisplayConfig); 2067 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2068 + mWakeUpWhenPluggedOrUnpluggedConfig); 2069 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2070 + mSuspendWhenScreenOffDueToProximityConfig); 2071 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2072 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2073 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2074 + mDreamsActivatedOnSleepByDefaultConfig); 2075 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2076 + mDreamsActivatedOnDockByDefaultConfig); 2077 pw.println(" mDreamsEnabledOnBatteryConfig=" 2078 + mDreamsEnabledOnBatteryConfig); 2079 pw.println(" mDreamsBatteryLevelMinimumWhenPoweredConfig=" 2080 + mDreamsBatteryLevelMinimumWhenPoweredConfig); 2081 pw.println(" mDreamsBatteryLevelMinimumWhenNotPoweredConfig=" 2082 + mDreamsBatteryLevelMinimumWhenNotPoweredConfig); 2083 pw.println(" mDreamsBatteryLevelDrainCutoffConfig=" 2084 + mDreamsBatteryLevelDrainCutoffConfig); 2085 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2086 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2087 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2088 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2089 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2090 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2091 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2092 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2093 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2094 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2095 + mScreenAutoBrightnessAdjustmentSetting); 2096 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2097 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2098 + mScreenBrightnessOverrideFromWindowManager); 2099 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2100 + mUserActivityTimeoutOverrideFromWindowManager); 2101 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2102 + mTemporaryScreenBrightnessSettingOverride); 2103 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2104 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2105 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2106 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2107 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2108 2109 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2110 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2111 pw.println(); 2112 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2113 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2114 2115 pw.println(); 2116 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2117 for (WakeLock wl : mWakeLocks) { 2118 pw.println(" " + wl); 2119 } 2120 2121 pw.println(); 2122 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2123 for (SuspendBlocker sb : mSuspendBlockers) { 2124 pw.println(" " + sb); 2125 } 2126 2127 pw.println(); 2128 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2129 2130 pw.println(); 2131 pw.println("Display Power: " + mDisplayPowerCallbacks); 2132 2133 wcd = mWirelessChargerDetector; 2134 } 2135 2136 if (wcd != null) { 2137 wcd.dump(pw); 2138 } 2139 } 2140 2141 private SuspendBlocker createSuspendBlockerLocked(String name) { 2142 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2143 mSuspendBlockers.add(suspendBlocker); 2144 return suspendBlocker; 2145 } 2146 2147 private static String wakefulnessToString(int wakefulness) { 2148 switch (wakefulness) { 2149 case WAKEFULNESS_ASLEEP: 2150 return "Asleep"; 2151 case WAKEFULNESS_AWAKE: 2152 return "Awake"; 2153 case WAKEFULNESS_DREAMING: 2154 return "Dreaming"; 2155 case WAKEFULNESS_DOZING: 2156 return "Dozing"; 2157 default: 2158 return Integer.toString(wakefulness); 2159 } 2160 } 2161 2162 private static WorkSource copyWorkSource(WorkSource workSource) { 2163 return workSource != null ? new WorkSource(workSource) : null; 2164 } 2165 2166 private final class BatteryReceiver extends BroadcastReceiver { 2167 @Override 2168 public void onReceive(Context context, Intent intent) { 2169 synchronized (mLock) { 2170 handleBatteryStateChangedLocked(); 2171 } 2172 } 2173 } 2174 2175 private final class BootCompletedReceiver extends BroadcastReceiver { 2176 @Override 2177 public void onReceive(Context context, Intent intent) { 2178 // This is our early signal that the system thinks it has finished booting. 2179 // However, the boot animation may still be running for a few more seconds 2180 // since it is ultimately in charge of when it terminates. 2181 // Defer transitioning into the boot completed state until the animation exits. 2182 // We do this so that the screen does not start to dim prematurely before 2183 // the user has actually had a chance to interact with the device. 2184 startWatchingForBootAnimationFinished(); 2185 } 2186 } 2187 2188 private final class DreamReceiver extends BroadcastReceiver { 2189 @Override 2190 public void onReceive(Context context, Intent intent) { 2191 synchronized (mLock) { 2192 scheduleSandmanLocked(); 2193 } 2194 } 2195 } 2196 2197 private final class UserSwitchedReceiver extends BroadcastReceiver { 2198 @Override 2199 public void onReceive(Context context, Intent intent) { 2200 synchronized (mLock) { 2201 handleSettingsChangedLocked(); 2202 } 2203 } 2204 } 2205 2206 private final class DockReceiver extends BroadcastReceiver { 2207 @Override 2208 public void onReceive(Context context, Intent intent) { 2209 synchronized (mLock) { 2210 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2211 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2212 if (mDockState != dockState) { 2213 mDockState = dockState; 2214 mDirty |= DIRTY_DOCK_STATE; 2215 updatePowerStateLocked(); 2216 } 2217 } 2218 } 2219 } 2220 2221 private final class SettingsObserver extends ContentObserver { 2222 public SettingsObserver(Handler handler) { 2223 super(handler); 2224 } 2225 2226 @Override 2227 public void onChange(boolean selfChange, Uri uri) { 2228 synchronized (mLock) { 2229 handleSettingsChangedLocked(); 2230 } 2231 } 2232 } 2233 2234 /** 2235 * Handler for asynchronous operations performed by the power manager. 2236 */ 2237 private final class PowerManagerHandler extends Handler { 2238 public PowerManagerHandler(Looper looper) { 2239 super(looper, null, true /*async*/); 2240 } 2241 2242 @Override 2243 public void handleMessage(Message msg) { 2244 switch (msg.what) { 2245 case MSG_USER_ACTIVITY_TIMEOUT: 2246 handleUserActivityTimeout(); 2247 break; 2248 case MSG_SANDMAN: 2249 handleSandman(); 2250 break; 2251 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2252 handleScreenOnBlockerReleased(); 2253 break; 2254 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2255 checkIfBootAnimationFinished(); 2256 break; 2257 } 2258 } 2259 } 2260 2261 /** 2262 * Represents a wake lock that has been acquired by an application. 2263 */ 2264 private final class WakeLock implements IBinder.DeathRecipient { 2265 public final IBinder mLock; 2266 public int mFlags; 2267 public String mTag; 2268 public final String mPackageName; 2269 public WorkSource mWorkSource; 2270 public final int mOwnerUid; 2271 public final int mOwnerPid; 2272 public boolean mNotifiedAcquired; 2273 2274 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2275 WorkSource workSource, int ownerUid, int ownerPid) { 2276 mLock = lock; 2277 mFlags = flags; 2278 mTag = tag; 2279 mPackageName = packageName; 2280 mWorkSource = copyWorkSource(workSource); 2281 mOwnerUid = ownerUid; 2282 mOwnerPid = ownerPid; 2283 } 2284 2285 @Override 2286 public void binderDied() { 2287 PowerManagerService.this.handleWakeLockDeath(this); 2288 } 2289 2290 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2291 int ownerUid, int ownerPid) { 2292 return mFlags == flags 2293 && mTag.equals(tag) 2294 && hasSameWorkSource(workSource) 2295 && mOwnerUid == ownerUid 2296 && mOwnerPid == ownerPid; 2297 } 2298 2299 public void updateProperties(int flags, String tag, String packageName, 2300 WorkSource workSource, int ownerUid, int ownerPid) { 2301 if (!mPackageName.equals(packageName)) { 2302 throw new IllegalStateException("Existing wake lock package name changed: " 2303 + mPackageName + " to " + packageName); 2304 } 2305 if (mOwnerUid != ownerUid) { 2306 throw new IllegalStateException("Existing wake lock uid changed: " 2307 + mOwnerUid + " to " + ownerUid); 2308 } 2309 if (mOwnerPid != ownerPid) { 2310 throw new IllegalStateException("Existing wake lock pid changed: " 2311 + mOwnerPid + " to " + ownerPid); 2312 } 2313 mFlags = flags; 2314 mTag = tag; 2315 updateWorkSource(workSource); 2316 } 2317 2318 public boolean hasSameWorkSource(WorkSource workSource) { 2319 return Objects.equal(mWorkSource, workSource); 2320 } 2321 2322 public void updateWorkSource(WorkSource workSource) { 2323 mWorkSource = copyWorkSource(workSource); 2324 } 2325 2326 @Override 2327 public String toString() { 2328 return getLockLevelString() 2329 + " '" + mTag + "'" + getLockFlagsString() 2330 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2331 } 2332 2333 @SuppressWarnings("deprecation") 2334 private String getLockLevelString() { 2335 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2336 case PowerManager.FULL_WAKE_LOCK: 2337 return "FULL_WAKE_LOCK "; 2338 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2339 return "SCREEN_BRIGHT_WAKE_LOCK "; 2340 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2341 return "SCREEN_DIM_WAKE_LOCK "; 2342 case PowerManager.PARTIAL_WAKE_LOCK: 2343 return "PARTIAL_WAKE_LOCK "; 2344 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2345 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2346 case PowerManager.DOZE_WAKE_LOCK: 2347 return "DOZE_WAKE_LOCK "; 2348 default: 2349 return "??? "; 2350 } 2351 } 2352 2353 private String getLockFlagsString() { 2354 String result = ""; 2355 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2356 result += " ACQUIRE_CAUSES_WAKEUP"; 2357 } 2358 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2359 result += " ON_AFTER_RELEASE"; 2360 } 2361 return result; 2362 } 2363 } 2364 2365 private final class SuspendBlockerImpl implements SuspendBlocker { 2366 private final String mName; 2367 private int mReferenceCount; 2368 2369 public SuspendBlockerImpl(String name) { 2370 mName = name; 2371 } 2372 2373 @Override 2374 protected void finalize() throws Throwable { 2375 try { 2376 if (mReferenceCount != 0) { 2377 Log.wtf(TAG, "Suspend blocker \"" + mName 2378 + "\" was finalized without being released!"); 2379 mReferenceCount = 0; 2380 nativeReleaseSuspendBlocker(mName); 2381 } 2382 } finally { 2383 super.finalize(); 2384 } 2385 } 2386 2387 @Override 2388 public void acquire() { 2389 synchronized (this) { 2390 mReferenceCount += 1; 2391 if (mReferenceCount == 1) { 2392 if (DEBUG_SPEW) { 2393 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2394 } 2395 nativeAcquireSuspendBlocker(mName); 2396 } 2397 } 2398 } 2399 2400 @Override 2401 public void release() { 2402 synchronized (this) { 2403 mReferenceCount -= 1; 2404 if (mReferenceCount == 0) { 2405 if (DEBUG_SPEW) { 2406 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2407 } 2408 nativeReleaseSuspendBlocker(mName); 2409 } else if (mReferenceCount < 0) { 2410 Log.wtf(TAG, "Suspend blocker \"" + mName 2411 + "\" was released without being acquired!", new Throwable()); 2412 mReferenceCount = 0; 2413 } 2414 } 2415 } 2416 2417 @Override 2418 public String toString() { 2419 synchronized (this) { 2420 return mName + ": ref count=" + mReferenceCount; 2421 } 2422 } 2423 } 2424 2425 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2426 private int mNestCount; 2427 2428 public boolean isHeld() { 2429 synchronized (this) { 2430 return mNestCount != 0; 2431 } 2432 } 2433 2434 @Override 2435 public void acquire() { 2436 synchronized (this) { 2437 mNestCount += 1; 2438 if (DEBUG) { 2439 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2440 } 2441 } 2442 } 2443 2444 @Override 2445 public void release() { 2446 synchronized (this) { 2447 mNestCount -= 1; 2448 if (mNestCount < 0) { 2449 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2450 new Throwable()); 2451 mNestCount = 0; 2452 } 2453 if (mNestCount == 0) { 2454 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2455 } 2456 if (DEBUG) { 2457 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2458 } 2459 } 2460 } 2461 2462 @Override 2463 public String toString() { 2464 synchronized (this) { 2465 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2466 } 2467 } 2468 } 2469 2470 private final class BinderService extends IPowerManager.Stub { 2471 @Override // Binder call 2472 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, 2473 String packageName, int uid) { 2474 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid)); 2475 } 2476 2477 @Override // Binder call 2478 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 2479 WorkSource ws) { 2480 if (lock == null) { 2481 throw new IllegalArgumentException("lock must not be null"); 2482 } 2483 if (packageName == null) { 2484 throw new IllegalArgumentException("packageName must not be null"); 2485 } 2486 PowerManager.validateWakeLockParameters(flags, tag); 2487 2488 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2489 if (ws != null && ws.size() != 0) { 2490 mContext.enforceCallingOrSelfPermission( 2491 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2492 } else { 2493 ws = null; 2494 } 2495 2496 final int uid = Binder.getCallingUid(); 2497 final int pid = Binder.getCallingPid(); 2498 final long ident = Binder.clearCallingIdentity(); 2499 try { 2500 acquireWakeLockInternal(lock, flags, tag, packageName, ws, uid, pid); 2501 } finally { 2502 Binder.restoreCallingIdentity(ident); 2503 } 2504 } 2505 2506 @Override // Binder call 2507 public void releaseWakeLock(IBinder lock, int flags) { 2508 if (lock == null) { 2509 throw new IllegalArgumentException("lock must not be null"); 2510 } 2511 2512 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2513 2514 final long ident = Binder.clearCallingIdentity(); 2515 try { 2516 releaseWakeLockInternal(lock, flags); 2517 } finally { 2518 Binder.restoreCallingIdentity(ident); 2519 } 2520 } 2521 2522 @Override // Binder call 2523 public void updateWakeLockUids(IBinder lock, int[] uids) { 2524 WorkSource ws = null; 2525 2526 if (uids != null) { 2527 ws = new WorkSource(); 2528 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 2529 // one at a time? 2530 for (int i = 0; i < uids.length; i++) { 2531 ws.add(uids[i]); 2532 } 2533 } 2534 updateWakeLockWorkSource(lock, ws); 2535 } 2536 2537 @Override // Binder call 2538 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws) { 2539 if (lock == null) { 2540 throw new IllegalArgumentException("lock must not be null"); 2541 } 2542 2543 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 2544 if (ws != null && ws.size() != 0) { 2545 mContext.enforceCallingOrSelfPermission( 2546 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 2547 } else { 2548 ws = null; 2549 } 2550 2551 final long ident = Binder.clearCallingIdentity(); 2552 try { 2553 updateWakeLockWorkSourceInternal(lock, ws); 2554 } finally { 2555 Binder.restoreCallingIdentity(ident); 2556 } 2557 } 2558 2559 @Override // Binder call 2560 public boolean isWakeLockLevelSupported(int level) { 2561 final long ident = Binder.clearCallingIdentity(); 2562 try { 2563 return isWakeLockLevelSupportedInternal(level); 2564 } finally { 2565 Binder.restoreCallingIdentity(ident); 2566 } 2567 } 2568 2569 @Override // Binder call 2570 public void userActivity(long eventTime, int event, int flags) { 2571 final long now = SystemClock.uptimeMillis(); 2572 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 2573 != PackageManager.PERMISSION_GRANTED) { 2574 // Once upon a time applications could call userActivity(). 2575 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 2576 // request instead of throwing a SecurityException so we don't break old apps. 2577 synchronized (mLock) { 2578 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 2579 mLastWarningAboutUserActivityPermission = now; 2580 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 2581 + "caller does not have DEVICE_POWER permission. " 2582 + "Please fix your app! " 2583 + " pid=" + Binder.getCallingPid() 2584 + " uid=" + Binder.getCallingUid()); 2585 } 2586 } 2587 return; 2588 } 2589 2590 if (eventTime > SystemClock.uptimeMillis()) { 2591 throw new IllegalArgumentException("event time must not be in the future"); 2592 } 2593 2594 final int uid = Binder.getCallingUid(); 2595 final long ident = Binder.clearCallingIdentity(); 2596 try { 2597 userActivityInternal(eventTime, event, flags, uid); 2598 } finally { 2599 Binder.restoreCallingIdentity(ident); 2600 } 2601 } 2602 2603 @Override // Binder call 2604 public void wakeUp(long eventTime) { 2605 if (eventTime > SystemClock.uptimeMillis()) { 2606 throw new IllegalArgumentException("event time must not be in the future"); 2607 } 2608 2609 mContext.enforceCallingOrSelfPermission( 2610 android.Manifest.permission.DEVICE_POWER, null); 2611 2612 final long ident = Binder.clearCallingIdentity(); 2613 try { 2614 wakeUpInternal(eventTime); 2615 } finally { 2616 Binder.restoreCallingIdentity(ident); 2617 } 2618 } 2619 2620 @Override // Binder call 2621 public void goToSleep(long eventTime, int reason) { 2622 if (eventTime > SystemClock.uptimeMillis()) { 2623 throw new IllegalArgumentException("event time must not be in the future"); 2624 } 2625 2626 mContext.enforceCallingOrSelfPermission( 2627 android.Manifest.permission.DEVICE_POWER, null); 2628 2629 final long ident = Binder.clearCallingIdentity(); 2630 try { 2631 goToSleepInternal(eventTime, reason); 2632 } finally { 2633 Binder.restoreCallingIdentity(ident); 2634 } 2635 } 2636 2637 @Override // Binder call 2638 public void nap(long eventTime) { 2639 if (eventTime > SystemClock.uptimeMillis()) { 2640 throw new IllegalArgumentException("event time must not be in the future"); 2641 } 2642 2643 mContext.enforceCallingOrSelfPermission( 2644 android.Manifest.permission.DEVICE_POWER, null); 2645 2646 final long ident = Binder.clearCallingIdentity(); 2647 try { 2648 napInternal(eventTime); 2649 } finally { 2650 Binder.restoreCallingIdentity(ident); 2651 } 2652 } 2653 2654 @Override // Binder call 2655 public boolean isInteractive() { 2656 final long ident = Binder.clearCallingIdentity(); 2657 try { 2658 return isInteractiveInternal(); 2659 } finally { 2660 Binder.restoreCallingIdentity(ident); 2661 } 2662 } 2663 2664 /** 2665 * Reboots the device. 2666 * 2667 * @param confirm If true, shows a reboot confirmation dialog. 2668 * @param reason The reason for the reboot, or null if none. 2669 * @param wait If true, this call waits for the reboot to complete and does not return. 2670 */ 2671 @Override // Binder call 2672 public void reboot(boolean confirm, String reason, boolean wait) { 2673 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2674 2675 final long ident = Binder.clearCallingIdentity(); 2676 try { 2677 shutdownOrRebootInternal(false, confirm, reason, wait); 2678 } finally { 2679 Binder.restoreCallingIdentity(ident); 2680 } 2681 } 2682 2683 /** 2684 * Shuts down the device. 2685 * 2686 * @param confirm If true, shows a shutdown confirmation dialog. 2687 * @param wait If true, this call waits for the shutdown to complete and does not return. 2688 */ 2689 @Override // Binder call 2690 public void shutdown(boolean confirm, boolean wait) { 2691 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2692 2693 final long ident = Binder.clearCallingIdentity(); 2694 try { 2695 shutdownOrRebootInternal(true, confirm, null, wait); 2696 } finally { 2697 Binder.restoreCallingIdentity(ident); 2698 } 2699 } 2700 2701 /** 2702 * Crash the runtime (causing a complete restart of the Android framework). 2703 * Requires REBOOT permission. Mostly for testing. Should not return. 2704 */ 2705 @Override // Binder call 2706 public void crash(String message) { 2707 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 2708 2709 final long ident = Binder.clearCallingIdentity(); 2710 try { 2711 crashInternal(message); 2712 } finally { 2713 Binder.restoreCallingIdentity(ident); 2714 } 2715 } 2716 2717 /** 2718 * Set the setting that determines whether the device stays on when plugged in. 2719 * The argument is a bit string, with each bit specifying a power source that, 2720 * when the device is connected to that source, causes the device to stay on. 2721 * See {@link android.os.BatteryManager} for the list of power sources that 2722 * can be specified. Current values include 2723 * {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 2724 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 2725 * 2726 * Used by "adb shell svc power stayon ..." 2727 * 2728 * @param val an {@code int} containing the bits that specify which power sources 2729 * should cause the device to stay on. 2730 */ 2731 @Override // Binder call 2732 public void setStayOnSetting(int val) { 2733 mContext.enforceCallingOrSelfPermission( 2734 android.Manifest.permission.WRITE_SETTINGS, null); 2735 2736 final long ident = Binder.clearCallingIdentity(); 2737 try { 2738 setStayOnSettingInternal(val); 2739 } finally { 2740 Binder.restoreCallingIdentity(ident); 2741 } 2742 } 2743 2744 /** 2745 * Used by device administration to set the maximum screen off timeout. 2746 * 2747 * This method must only be called by the device administration policy manager. 2748 */ 2749 @Override // Binder call 2750 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2751 final long ident = Binder.clearCallingIdentity(); 2752 try { 2753 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2754 } finally { 2755 Binder.restoreCallingIdentity(ident); 2756 } 2757 } 2758 2759 /** 2760 * Used by the settings application and brightness control widgets to 2761 * temporarily override the current screen brightness setting so that the 2762 * user can observe the effect of an intended settings change without applying 2763 * it immediately. 2764 * 2765 * The override will be canceled when the setting value is next updated. 2766 * 2767 * @param brightness The overridden brightness. 2768 * 2769 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2770 */ 2771 @Override // Binder call 2772 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2773 mContext.enforceCallingOrSelfPermission( 2774 android.Manifest.permission.DEVICE_POWER, null); 2775 2776 final long ident = Binder.clearCallingIdentity(); 2777 try { 2778 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2779 } finally { 2780 Binder.restoreCallingIdentity(ident); 2781 } 2782 } 2783 2784 /** 2785 * Used by the settings application and brightness control widgets to 2786 * temporarily override the current screen auto-brightness adjustment setting so that the 2787 * user can observe the effect of an intended settings change without applying 2788 * it immediately. 2789 * 2790 * The override will be canceled when the setting value is next updated. 2791 * 2792 * @param adj The overridden brightness, or Float.NaN to disable the override. 2793 * 2794 * @see android.provider.Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2795 */ 2796 @Override // Binder call 2797 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2798 mContext.enforceCallingOrSelfPermission( 2799 android.Manifest.permission.DEVICE_POWER, null); 2800 2801 final long ident = Binder.clearCallingIdentity(); 2802 try { 2803 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2804 } finally { 2805 Binder.restoreCallingIdentity(ident); 2806 } 2807 } 2808 2809 /** 2810 * Used by the phone application to make the attention LED flash when ringing. 2811 */ 2812 @Override // Binder call 2813 public void setAttentionLight(boolean on, int color) { 2814 mContext.enforceCallingOrSelfPermission( 2815 android.Manifest.permission.DEVICE_POWER, null); 2816 2817 final long ident = Binder.clearCallingIdentity(); 2818 try { 2819 setAttentionLightInternal(on, color); 2820 } finally { 2821 Binder.restoreCallingIdentity(ident); 2822 } 2823 } 2824 2825 @Override // Binder call 2826 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2827 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2828 != PackageManager.PERMISSION_GRANTED) { 2829 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2830 + Binder.getCallingPid() 2831 + ", uid=" + Binder.getCallingUid()); 2832 return; 2833 } 2834 2835 final long ident = Binder.clearCallingIdentity(); 2836 try { 2837 dumpInternal(pw); 2838 } finally { 2839 Binder.restoreCallingIdentity(ident); 2840 } 2841 } 2842 } 2843 2844 private final class LocalService extends PowerManagerInternal { 2845 /** 2846 * Used by the window manager to override the screen brightness based on the 2847 * current foreground activity. 2848 * 2849 * This method must only be called by the window manager. 2850 * 2851 * @param brightness The overridden brightness, or -1 to disable the override. 2852 */ 2853 @Override 2854 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 2855 mContext.enforceCallingOrSelfPermission( 2856 android.Manifest.permission.DEVICE_POWER, null); 2857 2858 final long ident = Binder.clearCallingIdentity(); 2859 try { 2860 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 2861 } finally { 2862 Binder.restoreCallingIdentity(ident); 2863 } 2864 } 2865 2866 /** 2867 * Used by the window manager to override the button brightness based on the 2868 * current foreground activity. 2869 * 2870 * This method must only be called by the window manager. 2871 * 2872 * @param brightness The overridden brightness, or -1 to disable the override. 2873 */ 2874 @Override 2875 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 2876 // Do nothing. 2877 // Button lights are not currently supported in the new implementation. 2878 mContext.enforceCallingOrSelfPermission( 2879 android.Manifest.permission.DEVICE_POWER, null); 2880 } 2881 2882 /** 2883 * Used by the window manager to override the user activity timeout based on the 2884 * current foreground activity. It can only be used to make the timeout shorter 2885 * than usual, not longer. 2886 * 2887 * This method must only be called by the window manager. 2888 * 2889 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 2890 */ 2891 @Override 2892 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 2893 mContext.enforceCallingOrSelfPermission( 2894 android.Manifest.permission.DEVICE_POWER, null); 2895 2896 final long ident = Binder.clearCallingIdentity(); 2897 try { 2898 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 2899 } finally { 2900 Binder.restoreCallingIdentity(ident); 2901 } 2902 } 2903 2904 @Override 2905 public void setPolicy(WindowManagerPolicy policy) { 2906 PowerManagerService.this.setPolicy(policy); 2907 } 2908 } 2909} 2910