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 17 package com.android.server.power; 18 19 import com.android.internal.app.IAppOpsService; 20 import com.android.internal.app.IBatteryStats; 21 import com.android.server.BatteryService; 22 import com.android.server.EventLogTags; 23 import com.android.server.LightsService; 24 import com.android.server.TwilightService; 25 import com.android.server.Watchdog; 26 import com.android.server.am.ActivityManagerService; 27 import com.android.server.display.DisplayManagerService; 28 import com.android.server.dreams.DreamManagerService; 29 30 import android.Manifest; 31 import android.content.BroadcastReceiver; 32 import android.content.ContentResolver; 33 import android.content.Context; 34 import android.content.Intent; 35 import android.content.IntentFilter; 36 import android.content.pm.PackageManager; 37 import android.content.res.Resources; 38 import android.database.ContentObserver; 39 import android.hardware.SensorManager; 40 import android.hardware.SystemSensorManager; 41 import android.net.Uri; 42 import android.os.BatteryManager; 43 import android.os.Binder; 44 import android.os.Handler; 45 import android.os.HandlerThread; 46 import android.os.IBinder; 47 import android.os.IPowerManager; 48 import android.os.Looper; 49 import android.os.Message; 50 import android.os.PowerManager; 51 import android.os.Process; 52 import android.os.RemoteException; 53 import android.os.SystemClock; 54 import android.os.SystemProperties; 55 import android.os.SystemService; 56 import android.os.UserHandle; 57 import android.os.WorkSource; 58 import android.provider.Settings; 59 import android.util.EventLog; 60 import android.util.Log; 61 import android.util.Slog; 62 import android.util.TimeUtils; 63 import android.view.WindowManagerPolicy; 64 65 import java.io.FileDescriptor; 66 import java.io.PrintWriter; 67 import java.util.ArrayList; 68 69 import libcore.util.Objects; 70 71 /** 72 * The power manager service is responsible for coordinating power management 73 * functions on the device. 74 */ 75 public final class PowerManagerService extends IPowerManager.Stub 76 implements Watchdog.Monitor { 77 private static final String TAG = "PowerManagerService"; 78 79 private static final boolean DEBUG = false; 80 private static final boolean DEBUG_SPEW = DEBUG && true; 81 82 // Message: Sent when a user activity timeout occurs to update the power state. 83 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 84 // Message: Sent when the device enters or exits a napping or dreaming state. 85 private static final int MSG_SANDMAN = 2; 86 // Message: Sent when the screen on blocker is released. 87 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 88 // Message: Sent to poll whether the boot animation has terminated. 89 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 90 91 // Dirty bit: mWakeLocks changed 92 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 93 // Dirty bit: mWakefulness changed 94 private static final int DIRTY_WAKEFULNESS = 1 << 1; 95 // Dirty bit: user activity was poked or may have timed out 96 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 97 // Dirty bit: actual display power state was updated asynchronously 98 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 99 // Dirty bit: mBootCompleted changed 100 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 101 // Dirty bit: settings changed 102 private static final int DIRTY_SETTINGS = 1 << 5; 103 // Dirty bit: mIsPowered changed 104 private static final int DIRTY_IS_POWERED = 1 << 6; 105 // Dirty bit: mStayOn changed 106 private static final int DIRTY_STAY_ON = 1 << 7; 107 // Dirty bit: battery state changed 108 private static final int DIRTY_BATTERY_STATE = 1 << 8; 109 // Dirty bit: proximity state changed 110 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 111 // Dirty bit: screen on blocker state became held or unheld 112 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 113 // Dirty bit: dock state changed 114 private static final int DIRTY_DOCK_STATE = 1 << 11; 115 116 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 117 // The screen should be off or in the process of being turned off by the display controller. 118 private static final int WAKEFULNESS_ASLEEP = 0; 119 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 120 // When the user activity timeout expires, the device may start napping or go to sleep. 121 private static final int WAKEFULNESS_AWAKE = 1; 122 // Wakefulness: The device is napping. It is deciding whether to dream or go to sleep 123 // but hasn't gotten around to it yet. It can be awoken by a call to wakeUp(), which 124 // ends the nap. User activity may brighten the screen but does not end the nap. 125 private static final int WAKEFULNESS_NAPPING = 2; 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 = 3; 131 132 // Summarizes the state of all active wakelocks. 133 private static final int WAKE_LOCK_CPU = 1 << 0; 134 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 135 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 136 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 137 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 138 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 139 140 // Summarizes the user activity state. 141 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 142 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 143 144 // Default and minimum screen off timeout in milliseconds. 145 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 146 private static final int MINIMUM_SCREEN_OFF_TIMEOUT = 10 * 1000; 147 148 // The screen dim duration, in milliseconds. 149 // This is subtracted from the end of the screen off timeout so the 150 // minimum screen off timeout should be longer than this. 151 private static final int SCREEN_DIM_DURATION = 7 * 1000; 152 153 // The maximum screen dim time expressed as a ratio relative to the screen 154 // off timeout. If the screen off timeout is very short then we want the 155 // dim timeout to also be quite short so that most of the time is spent on. 156 // Otherwise the user won't get much screen on time before dimming occurs. 157 private static final float MAXIMUM_SCREEN_DIM_RATIO = 0.2f; 158 159 // The name of the boot animation service in init.rc. 160 private static final String BOOT_ANIMATION_SERVICE = "bootanim"; 161 162 // Poll interval in milliseconds for watching boot animation finished. 163 private static final int BOOT_ANIMATION_POLL_INTERVAL = 200; 164 165 // If the battery level drops by this percentage and the user activity timeout 166 // has expired, then assume the device is receiving insufficient current to charge 167 // effectively and terminate the dream. 168 private static final int DREAM_BATTERY_LEVEL_DRAIN_CUTOFF = 5; 169 170 private Context mContext; 171 private LightsService mLightsService; 172 private BatteryService mBatteryService; 173 private DisplayManagerService mDisplayManagerService; 174 private IBatteryStats mBatteryStats; 175 private IAppOpsService mAppOps; 176 private HandlerThread mHandlerThread; 177 private PowerManagerHandler mHandler; 178 private WindowManagerPolicy mPolicy; 179 private Notifier mNotifier; 180 private DisplayPowerController mDisplayPowerController; 181 private WirelessChargerDetector mWirelessChargerDetector; 182 private SettingsObserver mSettingsObserver; 183 private DreamManagerService mDreamManager; 184 private LightsService.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 MSG_SANDMAN has been scheduled. 197 private boolean mSandmanScheduled; 198 199 // Table of all suspend blockers. 200 // There should only be a few of these. 201 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 202 203 // Table of all wake locks acquired by applications. 204 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 205 206 // A bitfield that summarizes the state of all active wakelocks. 207 private int mWakeLockSummary; 208 209 // If true, instructs the display controller to wait for the proximity sensor to 210 // go negative before turning the screen on. 211 private boolean mRequestWaitForNegativeProximity; 212 213 // Timestamp of the last time the device was awoken or put to sleep. 214 private long mLastWakeTime; 215 private long mLastSleepTime; 216 217 // True if we need to send a wake up or go to sleep finished notification 218 // when the display is ready. 219 private boolean mSendWakeUpFinishedNotificationWhenReady; 220 private boolean mSendGoToSleepFinishedNotificationWhenReady; 221 222 // Timestamp of the last call to user activity. 223 private long mLastUserActivityTime; 224 private long mLastUserActivityTimeNoChangeLights; 225 226 // A bitfield that summarizes the effect of the user activity timer. 227 // A zero value indicates that the user activity timer has expired. 228 private int mUserActivitySummary; 229 230 // The desired display power state. The actual state may lag behind the 231 // requested because it is updated asynchronously by the display power controller. 232 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 233 234 // The time the screen was last turned off, in elapsedRealtime() timebase. 235 private long mLastScreenOffEventElapsedRealTime; 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 // The display blanker used to turn the screen on or off. 261 private final DisplayBlankerImpl mDisplayBlanker; 262 263 // True if systemReady() has been called. 264 private boolean mSystemReady; 265 266 // True if boot completed occurred. We keep the screen on until this happens. 267 private boolean mBootCompleted; 268 269 // True if the device is plugged into a power source. 270 private boolean mIsPowered; 271 272 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 273 private int mPlugType; 274 275 // The current battery level percentage. 276 private int mBatteryLevel; 277 278 // The battery level percentage at the time the dream started. 279 // This is used to terminate a dream and go to sleep if the battery is 280 // draining faster than it is charging and the user activity timeout has expired. 281 private int mBatteryLevelWhenDreamStarted; 282 283 // The current dock state. 284 private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED; 285 286 // True if the device should wake up when plugged or unplugged. 287 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 288 289 // True if the device should suspend when the screen is off due to proximity. 290 private boolean mSuspendWhenScreenOffDueToProximityConfig; 291 292 // True if dreams are supported on this device. 293 private boolean mDreamsSupportedConfig; 294 295 // Default value for dreams enabled 296 private boolean mDreamsEnabledByDefaultConfig; 297 298 // Default value for dreams activate-on-sleep 299 private boolean mDreamsActivatedOnSleepByDefaultConfig; 300 301 // Default value for dreams activate-on-dock 302 private boolean mDreamsActivatedOnDockByDefaultConfig; 303 304 // True if dreams are enabled by the user. 305 private boolean mDreamsEnabledSetting; 306 307 // True if dreams should be activated on sleep. 308 private boolean mDreamsActivateOnSleepSetting; 309 310 // True if dreams should be activated on dock. 311 private boolean mDreamsActivateOnDockSetting; 312 313 // The screen off timeout setting value in milliseconds. 314 private int mScreenOffTimeoutSetting; 315 316 // The maximum allowable screen off timeout according to the device 317 // administration policy. Overrides other settings. 318 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 319 320 // The stay on while plugged in setting. 321 // A bitfield of battery conditions under which to make the screen stay on. 322 private int mStayOnWhilePluggedInSetting; 323 324 // True if the device should stay on. 325 private boolean mStayOn; 326 327 // True if the proximity sensor reads a positive result. 328 private boolean mProximityPositive; 329 330 // Screen brightness setting limits. 331 private int mScreenBrightnessSettingMinimum; 332 private int mScreenBrightnessSettingMaximum; 333 private int mScreenBrightnessSettingDefault; 334 335 // The screen brightness setting, from 0 to 255. 336 // Use -1 if no value has been set. 337 private int mScreenBrightnessSetting; 338 339 // The screen auto-brightness adjustment setting, from -1 to 1. 340 // Use 0 if there is no adjustment. 341 private float mScreenAutoBrightnessAdjustmentSetting; 342 343 // The screen brightness mode. 344 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 345 private int mScreenBrightnessModeSetting; 346 347 // The screen brightness setting override from the window manager 348 // to allow the current foreground activity to override the brightness. 349 // Use -1 to disable. 350 private int mScreenBrightnessOverrideFromWindowManager = -1; 351 352 // The user activity timeout override from the window manager 353 // to allow the current foreground activity to override the user activity timeout. 354 // Use -1 to disable. 355 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 356 357 // The screen brightness setting override from the settings application 358 // to temporarily adjust the brightness until next updated, 359 // Use -1 to disable. 360 private int mTemporaryScreenBrightnessSettingOverride = -1; 361 362 // The screen brightness adjustment setting override from the settings 363 // application to temporarily adjust the auto-brightness adjustment factor 364 // until next updated, in the range -1..1. 365 // Use NaN to disable. 366 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 367 368 // Time when we last logged a warning about calling userActivity() without permission. 369 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 370 371 private native void nativeInit(); 372 373 private static native void nativeSetPowerState(boolean screenOn, boolean screenBright); 374 private static native void nativeAcquireSuspendBlocker(String name); 375 private static native void nativeReleaseSuspendBlocker(String name); 376 private static native void nativeSetInteractive(boolean enable); 377 private static native void nativeSetAutoSuspend(boolean enable); 378 379 public PowerManagerService() { 380 synchronized (mLock) { 381 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks"); 382 mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display"); 383 mDisplaySuspendBlocker.acquire(); 384 mHoldingDisplaySuspendBlocker = true; 385 386 mScreenOnBlocker = new ScreenOnBlockerImpl(); 387 mDisplayBlanker = new DisplayBlankerImpl(); 388 mWakefulness = WAKEFULNESS_AWAKE; 389 } 390 391 nativeInit(); 392 nativeSetPowerState(true, true); 393 } 394 395 /** 396 * Initialize the power manager. 397 * Must be called before any other functions within the power manager are called. 398 */ 399 public void init(Context context, LightsService ls, 400 ActivityManagerService am, BatteryService bs, IBatteryStats bss, 401 IAppOpsService appOps, DisplayManagerService dm) { 402 mContext = context; 403 mLightsService = ls; 404 mBatteryService = bs; 405 mBatteryStats = bss; 406 mAppOps = appOps; 407 mDisplayManagerService = dm; 408 mHandlerThread = new HandlerThread(TAG); 409 mHandlerThread.start(); 410 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 411 412 Watchdog.getInstance().addMonitor(this); 413 Watchdog.getInstance().addThread(mHandler, mHandlerThread.getName()); 414 415 // Forcibly turn the screen on at boot so that it is in a known power state. 416 // We do this in init() rather than in the constructor because setting the 417 // screen state requires a call into surface flinger which then needs to call back 418 // into the activity manager to check permissions. Unfortunately the 419 // activity manager is not running when the constructor is called, so we 420 // have to defer setting the screen state until this point. 421 mDisplayBlanker.unblankAllDisplays(); 422 } 423 424 public void setPolicy(WindowManagerPolicy policy) { 425 synchronized (mLock) { 426 mPolicy = policy; 427 } 428 } 429 430 public void systemReady(TwilightService twilight, DreamManagerService dreamManager) { 431 synchronized (mLock) { 432 mSystemReady = true; 433 mDreamManager = dreamManager; 434 435 PowerManager pm = (PowerManager)mContext.getSystemService(Context.POWER_SERVICE); 436 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 437 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 438 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 439 440 SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); 441 442 // The notifier runs on the system server's main looper so as not to interfere 443 // with the animations and other critical functions of the power manager. 444 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 445 mAppOps, createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 446 mScreenOnBlocker, mPolicy); 447 448 // The display power controller runs on the power manager service's 449 // own handler thread to ensure timely operation. 450 mDisplayPowerController = new DisplayPowerController(mHandler.getLooper(), 451 mContext, mNotifier, mLightsService, twilight, sensorManager, 452 mDisplayManagerService, mDisplaySuspendBlocker, mDisplayBlanker, 453 mDisplayPowerControllerCallbacks, mHandler); 454 455 mWirelessChargerDetector = new WirelessChargerDetector(sensorManager, 456 createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"), 457 mHandler); 458 mSettingsObserver = new SettingsObserver(mHandler); 459 mAttentionLight = mLightsService.getLight(LightsService.LIGHT_ID_ATTENTION); 460 461 // Register for broadcasts from other components of the system. 462 IntentFilter filter = new IntentFilter(); 463 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 464 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 465 466 filter = new IntentFilter(); 467 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 468 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 469 470 filter = new IntentFilter(); 471 filter.addAction(Intent.ACTION_DREAMING_STARTED); 472 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 473 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 474 475 filter = new IntentFilter(); 476 filter.addAction(Intent.ACTION_USER_SWITCHED); 477 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 478 479 filter = new IntentFilter(); 480 filter.addAction(Intent.ACTION_DOCK_EVENT); 481 mContext.registerReceiver(new DockReceiver(), filter, null, mHandler); 482 483 // Register for settings changes. 484 final ContentResolver resolver = mContext.getContentResolver(); 485 resolver.registerContentObserver(Settings.Secure.getUriFor( 486 Settings.Secure.SCREENSAVER_ENABLED), 487 false, mSettingsObserver, UserHandle.USER_ALL); 488 resolver.registerContentObserver(Settings.Secure.getUriFor( 489 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 490 false, mSettingsObserver, UserHandle.USER_ALL); 491 resolver.registerContentObserver(Settings.Secure.getUriFor( 492 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK), 493 false, mSettingsObserver, UserHandle.USER_ALL); 494 resolver.registerContentObserver(Settings.System.getUriFor( 495 Settings.System.SCREEN_OFF_TIMEOUT), 496 false, mSettingsObserver, UserHandle.USER_ALL); 497 resolver.registerContentObserver(Settings.Global.getUriFor( 498 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 499 false, mSettingsObserver, UserHandle.USER_ALL); 500 resolver.registerContentObserver(Settings.System.getUriFor( 501 Settings.System.SCREEN_BRIGHTNESS), 502 false, mSettingsObserver, UserHandle.USER_ALL); 503 resolver.registerContentObserver(Settings.System.getUriFor( 504 Settings.System.SCREEN_BRIGHTNESS_MODE), 505 false, mSettingsObserver, UserHandle.USER_ALL); 506 507 // Go. 508 readConfigurationLocked(); 509 updateSettingsLocked(); 510 mDirty |= DIRTY_BATTERY_STATE; 511 updatePowerStateLocked(); 512 } 513 } 514 515 private void readConfigurationLocked() { 516 final Resources resources = mContext.getResources(); 517 518 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 519 com.android.internal.R.bool.config_unplugTurnsOnScreen); 520 mSuspendWhenScreenOffDueToProximityConfig = resources.getBoolean( 521 com.android.internal.R.bool.config_suspendWhenScreenOffDueToProximity); 522 mDreamsSupportedConfig = resources.getBoolean( 523 com.android.internal.R.bool.config_dreamsSupported); 524 mDreamsEnabledByDefaultConfig = resources.getBoolean( 525 com.android.internal.R.bool.config_dreamsEnabledByDefault); 526 mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean( 527 com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault); 528 mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean( 529 com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault); 530 } 531 532 private void updateSettingsLocked() { 533 final ContentResolver resolver = mContext.getContentResolver(); 534 535 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 536 Settings.Secure.SCREENSAVER_ENABLED, 537 mDreamsEnabledByDefaultConfig ? 1 : 0, 538 UserHandle.USER_CURRENT) != 0); 539 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 540 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 541 mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0, 542 UserHandle.USER_CURRENT) != 0); 543 mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver, 544 Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK, 545 mDreamsActivatedOnDockByDefaultConfig ? 1 : 0, 546 UserHandle.USER_CURRENT) != 0); 547 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 548 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 549 UserHandle.USER_CURRENT); 550 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 551 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 552 553 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 554 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 555 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 556 UserHandle.USER_CURRENT); 557 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 558 mTemporaryScreenBrightnessSettingOverride = -1; 559 } 560 561 final float oldScreenAutoBrightnessAdjustmentSetting = 562 mScreenAutoBrightnessAdjustmentSetting; 563 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 564 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 565 UserHandle.USER_CURRENT); 566 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 567 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 568 } 569 570 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 571 Settings.System.SCREEN_BRIGHTNESS_MODE, 572 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 573 574 mDirty |= DIRTY_SETTINGS; 575 } 576 577 private void handleSettingsChangedLocked() { 578 updateSettingsLocked(); 579 updatePowerStateLocked(); 580 } 581 582 @Override // Binder call 583 public void acquireWakeLockWithUid(IBinder lock, int flags, String tag, String packageName, 584 int uid) { 585 acquireWakeLock(lock, flags, tag, packageName, new WorkSource(uid)); 586 } 587 588 @Override // Binder call 589 public void acquireWakeLock(IBinder lock, int flags, String tag, String packageName, 590 WorkSource ws) { 591 if (lock == null) { 592 throw new IllegalArgumentException("lock must not be null"); 593 } 594 if (packageName == null) { 595 throw new IllegalArgumentException("packageName must not be null"); 596 } 597 PowerManager.validateWakeLockParameters(flags, tag); 598 599 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 600 if (ws != null && ws.size() != 0) { 601 mContext.enforceCallingOrSelfPermission( 602 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 603 } else { 604 ws = null; 605 } 606 607 final int uid = Binder.getCallingUid(); 608 final int pid = Binder.getCallingPid(); 609 final long ident = Binder.clearCallingIdentity(); 610 try { 611 acquireWakeLockInternal(lock, flags, tag, packageName, ws, uid, pid); 612 } finally { 613 Binder.restoreCallingIdentity(ident); 614 } 615 } 616 617 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, String packageName, 618 WorkSource ws, int uid, int pid) { 619 synchronized (mLock) { 620 if (DEBUG_SPEW) { 621 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 622 + ", flags=0x" + Integer.toHexString(flags) 623 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 624 } 625 626 WakeLock wakeLock; 627 int index = findWakeLockIndexLocked(lock); 628 if (index >= 0) { 629 wakeLock = mWakeLocks.get(index); 630 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 631 // Update existing wake lock. This shouldn't happen but is harmless. 632 notifyWakeLockReleasedLocked(wakeLock); 633 wakeLock.updateProperties(flags, tag, packageName, ws, uid, pid); 634 notifyWakeLockAcquiredLocked(wakeLock); 635 } 636 } else { 637 wakeLock = new WakeLock(lock, flags, tag, packageName, ws, uid, pid); 638 try { 639 lock.linkToDeath(wakeLock, 0); 640 } catch (RemoteException ex) { 641 throw new IllegalArgumentException("Wake lock is already dead."); 642 } 643 notifyWakeLockAcquiredLocked(wakeLock); 644 mWakeLocks.add(wakeLock); 645 } 646 647 applyWakeLockFlagsOnAcquireLocked(wakeLock); 648 mDirty |= DIRTY_WAKE_LOCKS; 649 updatePowerStateLocked(); 650 } 651 } 652 653 @SuppressWarnings("deprecation") 654 private static boolean isScreenLock(final WakeLock wakeLock) { 655 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 656 case PowerManager.FULL_WAKE_LOCK: 657 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 658 case PowerManager.SCREEN_DIM_WAKE_LOCK: 659 return true; 660 } 661 return false; 662 } 663 664 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 665 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 666 && isScreenLock(wakeLock)) { 667 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 668 } 669 } 670 671 @Override // Binder call 672 public void releaseWakeLock(IBinder lock, int flags) { 673 if (lock == null) { 674 throw new IllegalArgumentException("lock must not be null"); 675 } 676 677 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 678 679 final long ident = Binder.clearCallingIdentity(); 680 try { 681 releaseWakeLockInternal(lock, flags); 682 } finally { 683 Binder.restoreCallingIdentity(ident); 684 } 685 } 686 687 private void releaseWakeLockInternal(IBinder lock, int flags) { 688 synchronized (mLock) { 689 int index = findWakeLockIndexLocked(lock); 690 if (index < 0) { 691 if (DEBUG_SPEW) { 692 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 693 + " [not found], flags=0x" + Integer.toHexString(flags)); 694 } 695 return; 696 } 697 698 WakeLock wakeLock = mWakeLocks.get(index); 699 if (DEBUG_SPEW) { 700 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 701 + " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags)); 702 } 703 704 mWakeLocks.remove(index); 705 notifyWakeLockReleasedLocked(wakeLock); 706 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 707 708 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 709 mRequestWaitForNegativeProximity = true; 710 } 711 712 applyWakeLockFlagsOnReleaseLocked(wakeLock); 713 mDirty |= DIRTY_WAKE_LOCKS; 714 updatePowerStateLocked(); 715 } 716 } 717 718 private void handleWakeLockDeath(WakeLock wakeLock) { 719 synchronized (mLock) { 720 if (DEBUG_SPEW) { 721 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock) 722 + " [" + wakeLock.mTag + "]"); 723 } 724 725 int index = mWakeLocks.indexOf(wakeLock); 726 if (index < 0) { 727 return; 728 } 729 730 mWakeLocks.remove(index); 731 notifyWakeLockReleasedLocked(wakeLock); 732 733 applyWakeLockFlagsOnReleaseLocked(wakeLock); 734 mDirty |= DIRTY_WAKE_LOCKS; 735 updatePowerStateLocked(); 736 } 737 } 738 739 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 740 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0 741 && isScreenLock(wakeLock)) { 742 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 743 PowerManager.USER_ACTIVITY_EVENT_OTHER, 744 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 745 wakeLock.mOwnerUid); 746 } 747 } 748 749 @Override // Binder call 750 public void updateWakeLockUids(IBinder lock, int[] uids) { 751 WorkSource ws = null; 752 753 if (uids != null) { 754 ws = new WorkSource(); 755 // XXX should WorkSource have a way to set uids as an int[] instead of adding them 756 // one at a time? 757 for (int i = 0; i < uids.length; i++) { 758 ws.add(uids[i]); 759 } 760 } 761 updateWakeLockWorkSource(lock, ws); 762 } 763 764 @Override // Binder call 765 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws) { 766 if (lock == null) { 767 throw new IllegalArgumentException("lock must not be null"); 768 } 769 770 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 771 if (ws != null && ws.size() != 0) { 772 mContext.enforceCallingOrSelfPermission( 773 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 774 } else { 775 ws = null; 776 } 777 778 final long ident = Binder.clearCallingIdentity(); 779 try { 780 updateWakeLockWorkSourceInternal(lock, ws); 781 } finally { 782 Binder.restoreCallingIdentity(ident); 783 } 784 } 785 786 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws) { 787 synchronized (mLock) { 788 int index = findWakeLockIndexLocked(lock); 789 if (index < 0) { 790 if (DEBUG_SPEW) { 791 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 792 + " [not found], ws=" + ws); 793 } 794 throw new IllegalArgumentException("Wake lock not active"); 795 } 796 797 WakeLock wakeLock = mWakeLocks.get(index); 798 if (DEBUG_SPEW) { 799 Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock) 800 + " [" + wakeLock.mTag + "], ws=" + ws); 801 } 802 803 if (!wakeLock.hasSameWorkSource(ws)) { 804 notifyWakeLockReleasedLocked(wakeLock); 805 wakeLock.updateWorkSource(ws); 806 notifyWakeLockAcquiredLocked(wakeLock); 807 } 808 } 809 } 810 811 private int findWakeLockIndexLocked(IBinder lock) { 812 final int count = mWakeLocks.size(); 813 for (int i = 0; i < count; i++) { 814 if (mWakeLocks.get(i).mLock == lock) { 815 return i; 816 } 817 } 818 return -1; 819 } 820 821 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 822 if (mSystemReady) { 823 wakeLock.mNotifiedAcquired = true; 824 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 825 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 826 } 827 } 828 829 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 830 if (mSystemReady && wakeLock.mNotifiedAcquired) { 831 wakeLock.mNotifiedAcquired = false; 832 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, wakeLock.mPackageName, 833 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 834 } 835 } 836 837 @Override // Binder call 838 public boolean isWakeLockLevelSupported(int level) { 839 final long ident = Binder.clearCallingIdentity(); 840 try { 841 return isWakeLockLevelSupportedInternal(level); 842 } finally { 843 Binder.restoreCallingIdentity(ident); 844 } 845 } 846 847 @SuppressWarnings("deprecation") 848 private boolean isWakeLockLevelSupportedInternal(int level) { 849 synchronized (mLock) { 850 switch (level) { 851 case PowerManager.PARTIAL_WAKE_LOCK: 852 case PowerManager.SCREEN_DIM_WAKE_LOCK: 853 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 854 case PowerManager.FULL_WAKE_LOCK: 855 return true; 856 857 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 858 return mSystemReady && mDisplayPowerController.isProximitySensorAvailable(); 859 860 default: 861 return false; 862 } 863 } 864 } 865 866 @Override // Binder call 867 public void userActivity(long eventTime, int event, int flags) { 868 final long now = SystemClock.uptimeMillis(); 869 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 870 != PackageManager.PERMISSION_GRANTED) { 871 // Once upon a time applications could call userActivity(). 872 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 873 // request instead of throwing a SecurityException so we don't break old apps. 874 synchronized (mLock) { 875 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 876 mLastWarningAboutUserActivityPermission = now; 877 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 878 + "caller does not have DEVICE_POWER permission. " 879 + "Please fix your app! " 880 + " pid=" + Binder.getCallingPid() 881 + " uid=" + Binder.getCallingUid()); 882 } 883 } 884 return; 885 } 886 887 if (eventTime > SystemClock.uptimeMillis()) { 888 throw new IllegalArgumentException("event time must not be in the future"); 889 } 890 891 final int uid = Binder.getCallingUid(); 892 final long ident = Binder.clearCallingIdentity(); 893 try { 894 userActivityInternal(eventTime, event, flags, uid); 895 } finally { 896 Binder.restoreCallingIdentity(ident); 897 } 898 } 899 900 // Called from native code. 901 private void userActivityFromNative(long eventTime, int event, int flags) { 902 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 903 } 904 905 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 906 synchronized (mLock) { 907 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 908 updatePowerStateLocked(); 909 } 910 } 911 } 912 913 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 914 if (DEBUG_SPEW) { 915 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 916 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 917 + ", uid=" + uid); 918 } 919 920 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 921 || mWakefulness == WAKEFULNESS_ASLEEP || !mBootCompleted || !mSystemReady) { 922 return false; 923 } 924 925 mNotifier.onUserActivity(event, uid); 926 927 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 928 if (eventTime > mLastUserActivityTimeNoChangeLights 929 && eventTime > mLastUserActivityTime) { 930 mLastUserActivityTimeNoChangeLights = eventTime; 931 mDirty |= DIRTY_USER_ACTIVITY; 932 return true; 933 } 934 } else { 935 if (eventTime > mLastUserActivityTime) { 936 mLastUserActivityTime = eventTime; 937 mDirty |= DIRTY_USER_ACTIVITY; 938 return true; 939 } 940 } 941 return false; 942 } 943 944 @Override // Binder call 945 public void wakeUp(long eventTime) { 946 if (eventTime > SystemClock.uptimeMillis()) { 947 throw new IllegalArgumentException("event time must not be in the future"); 948 } 949 950 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 951 952 final long ident = Binder.clearCallingIdentity(); 953 try { 954 wakeUpInternal(eventTime); 955 } finally { 956 Binder.restoreCallingIdentity(ident); 957 } 958 } 959 960 // Called from native code. 961 private void wakeUpFromNative(long eventTime) { 962 wakeUpInternal(eventTime); 963 } 964 965 private void wakeUpInternal(long eventTime) { 966 synchronized (mLock) { 967 if (wakeUpNoUpdateLocked(eventTime)) { 968 updatePowerStateLocked(); 969 } 970 } 971 } 972 973 private boolean wakeUpNoUpdateLocked(long eventTime) { 974 if (DEBUG_SPEW) { 975 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 976 } 977 978 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 979 || !mBootCompleted || !mSystemReady) { 980 return false; 981 } 982 983 switch (mWakefulness) { 984 case WAKEFULNESS_ASLEEP: 985 Slog.i(TAG, "Waking up from sleep..."); 986 sendPendingNotificationsLocked(); 987 mNotifier.onWakeUpStarted(); 988 mSendWakeUpFinishedNotificationWhenReady = true; 989 break; 990 case WAKEFULNESS_DREAMING: 991 Slog.i(TAG, "Waking up from dream..."); 992 break; 993 case WAKEFULNESS_NAPPING: 994 Slog.i(TAG, "Waking up from nap..."); 995 break; 996 } 997 998 mLastWakeTime = eventTime; 999 mWakefulness = WAKEFULNESS_AWAKE; 1000 mDirty |= DIRTY_WAKEFULNESS; 1001 1002 userActivityNoUpdateLocked( 1003 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1004 return true; 1005 } 1006 1007 @Override // Binder call 1008 public void goToSleep(long eventTime, int reason) { 1009 if (eventTime > SystemClock.uptimeMillis()) { 1010 throw new IllegalArgumentException("event time must not be in the future"); 1011 } 1012 1013 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 1014 1015 final long ident = Binder.clearCallingIdentity(); 1016 try { 1017 goToSleepInternal(eventTime, reason); 1018 } finally { 1019 Binder.restoreCallingIdentity(ident); 1020 } 1021 } 1022 1023 // Called from native code. 1024 private void goToSleepFromNative(long eventTime, int reason) { 1025 goToSleepInternal(eventTime, reason); 1026 } 1027 1028 private void goToSleepInternal(long eventTime, int reason) { 1029 synchronized (mLock) { 1030 if (goToSleepNoUpdateLocked(eventTime, reason)) { 1031 updatePowerStateLocked(); 1032 } 1033 } 1034 } 1035 1036 @SuppressWarnings("deprecation") 1037 private boolean goToSleepNoUpdateLocked(long eventTime, int reason) { 1038 if (DEBUG_SPEW) { 1039 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime + ", reason=" + reason); 1040 } 1041 1042 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 1043 || !mBootCompleted || !mSystemReady) { 1044 return false; 1045 } 1046 1047 switch (reason) { 1048 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 1049 Slog.i(TAG, "Going to sleep due to device administration policy..."); 1050 break; 1051 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 1052 Slog.i(TAG, "Going to sleep due to screen timeout..."); 1053 break; 1054 default: 1055 Slog.i(TAG, "Going to sleep by user request..."); 1056 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 1057 break; 1058 } 1059 1060 sendPendingNotificationsLocked(); 1061 mNotifier.onGoToSleepStarted(reason); 1062 mSendGoToSleepFinishedNotificationWhenReady = true; 1063 1064 mLastSleepTime = eventTime; 1065 mDirty |= DIRTY_WAKEFULNESS; 1066 mWakefulness = WAKEFULNESS_ASLEEP; 1067 1068 // Report the number of wake locks that will be cleared by going to sleep. 1069 int numWakeLocksCleared = 0; 1070 final int numWakeLocks = mWakeLocks.size(); 1071 for (int i = 0; i < numWakeLocks; i++) { 1072 final WakeLock wakeLock = mWakeLocks.get(i); 1073 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1074 case PowerManager.FULL_WAKE_LOCK: 1075 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1076 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1077 numWakeLocksCleared += 1; 1078 break; 1079 } 1080 } 1081 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 1082 return true; 1083 } 1084 1085 @Override // Binder call 1086 public void nap(long eventTime) { 1087 if (eventTime > SystemClock.uptimeMillis()) { 1088 throw new IllegalArgumentException("event time must not be in the future"); 1089 } 1090 1091 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 1092 1093 final long ident = Binder.clearCallingIdentity(); 1094 try { 1095 napInternal(eventTime); 1096 } finally { 1097 Binder.restoreCallingIdentity(ident); 1098 } 1099 } 1100 1101 private void napInternal(long eventTime) { 1102 synchronized (mLock) { 1103 if (napNoUpdateLocked(eventTime)) { 1104 updatePowerStateLocked(); 1105 } 1106 } 1107 } 1108 1109 private boolean napNoUpdateLocked(long eventTime) { 1110 if (DEBUG_SPEW) { 1111 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 1112 } 1113 1114 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1115 || !mBootCompleted || !mSystemReady) { 1116 return false; 1117 } 1118 1119 Slog.i(TAG, "Nap time..."); 1120 1121 mDirty |= DIRTY_WAKEFULNESS; 1122 mWakefulness = WAKEFULNESS_NAPPING; 1123 return true; 1124 } 1125 1126 /** 1127 * Updates the global power state based on dirty bits recorded in mDirty. 1128 * 1129 * This is the main function that performs power state transitions. 1130 * We centralize them here so that we can recompute the power state completely 1131 * each time something important changes, and ensure that we do it the same 1132 * way each time. The point is to gather all of the transition logic here. 1133 */ 1134 private void updatePowerStateLocked() { 1135 if (!mSystemReady || mDirty == 0) { 1136 return; 1137 } 1138 1139 // Phase 0: Basic state updates. 1140 updateIsPoweredLocked(mDirty); 1141 updateStayOnLocked(mDirty); 1142 1143 // Phase 1: Update wakefulness. 1144 // Loop because the wake lock and user activity computations are influenced 1145 // by changes in wakefulness. 1146 final long now = SystemClock.uptimeMillis(); 1147 int dirtyPhase2 = 0; 1148 for (;;) { 1149 int dirtyPhase1 = mDirty; 1150 dirtyPhase2 |= dirtyPhase1; 1151 mDirty = 0; 1152 1153 updateWakeLockSummaryLocked(dirtyPhase1); 1154 updateUserActivitySummaryLocked(now, dirtyPhase1); 1155 if (!updateWakefulnessLocked(dirtyPhase1)) { 1156 break; 1157 } 1158 } 1159 1160 // Phase 2: Update dreams and display power state. 1161 updateDreamLocked(dirtyPhase2); 1162 updateDisplayPowerStateLocked(dirtyPhase2); 1163 1164 // Phase 3: Send notifications, if needed. 1165 if (mDisplayReady) { 1166 sendPendingNotificationsLocked(); 1167 } 1168 1169 // Phase 4: Update suspend blocker. 1170 // Because we might release the last suspend blocker here, we need to make sure 1171 // we finished everything else first! 1172 updateSuspendBlockerLocked(); 1173 } 1174 1175 private void sendPendingNotificationsLocked() { 1176 if (mSendWakeUpFinishedNotificationWhenReady) { 1177 mSendWakeUpFinishedNotificationWhenReady = false; 1178 mNotifier.onWakeUpFinished(); 1179 } 1180 if (mSendGoToSleepFinishedNotificationWhenReady) { 1181 mSendGoToSleepFinishedNotificationWhenReady = false; 1182 mNotifier.onGoToSleepFinished(); 1183 } 1184 } 1185 1186 /** 1187 * Updates the value of mIsPowered. 1188 * Sets DIRTY_IS_POWERED if a change occurred. 1189 */ 1190 private void updateIsPoweredLocked(int dirty) { 1191 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1192 final boolean wasPowered = mIsPowered; 1193 final int oldPlugType = mPlugType; 1194 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1195 mPlugType = mBatteryService.getPlugType(); 1196 mBatteryLevel = mBatteryService.getBatteryLevel(); 1197 1198 if (DEBUG) { 1199 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1200 + ", mIsPowered=" + mIsPowered 1201 + ", oldPlugType=" + oldPlugType 1202 + ", mPlugType=" + mPlugType 1203 + ", mBatteryLevel=" + mBatteryLevel); 1204 } 1205 1206 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1207 mDirty |= DIRTY_IS_POWERED; 1208 1209 // Update wireless dock detection state. 1210 final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update( 1211 mIsPowered, mPlugType, mBatteryLevel); 1212 1213 // Treat plugging and unplugging the devices as a user activity. 1214 // Users find it disconcerting when they plug or unplug the device 1215 // and it shuts off right away. 1216 // Some devices also wake the device when plugged or unplugged because 1217 // they don't have a charging LED. 1218 final long now = SystemClock.uptimeMillis(); 1219 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType, 1220 dockedOnWirelessCharger)) { 1221 wakeUpNoUpdateLocked(now); 1222 } 1223 userActivityNoUpdateLocked( 1224 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1225 1226 // Tell the notifier whether wireless charging has started so that 1227 // it can provide feedback to the user. 1228 if (dockedOnWirelessCharger) { 1229 mNotifier.onWirelessChargingStarted(); 1230 } 1231 } 1232 } 1233 } 1234 1235 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked( 1236 boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) { 1237 // Don't wake when powered unless configured to do so. 1238 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1239 return false; 1240 } 1241 1242 // Don't wake when undocked from wireless charger. 1243 // See WirelessChargerDetector for justification. 1244 if (wasPowered && !mIsPowered 1245 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1246 return false; 1247 } 1248 1249 // Don't wake when docked on wireless charger unless we are certain of it. 1250 // See WirelessChargerDetector for justification. 1251 if (!wasPowered && mIsPowered 1252 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1253 && !dockedOnWirelessCharger) { 1254 return false; 1255 } 1256 1257 // If already dreaming and becoming powered, then don't wake. 1258 if (mIsPowered && (mWakefulness == WAKEFULNESS_NAPPING 1259 || mWakefulness == WAKEFULNESS_DREAMING)) { 1260 return false; 1261 } 1262 1263 // Otherwise wake up! 1264 return true; 1265 } 1266 1267 /** 1268 * Updates the value of mStayOn. 1269 * Sets DIRTY_STAY_ON if a change occurred. 1270 */ 1271 private void updateStayOnLocked(int dirty) { 1272 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1273 final boolean wasStayOn = mStayOn; 1274 if (mStayOnWhilePluggedInSetting != 0 1275 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1276 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1277 } else { 1278 mStayOn = false; 1279 } 1280 1281 if (mStayOn != wasStayOn) { 1282 mDirty |= DIRTY_STAY_ON; 1283 } 1284 } 1285 } 1286 1287 /** 1288 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1289 * Note that most wake-locks are ignored when the system is asleep. 1290 * 1291 * This function must have no other side-effects. 1292 */ 1293 @SuppressWarnings("deprecation") 1294 private void updateWakeLockSummaryLocked(int dirty) { 1295 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1296 mWakeLockSummary = 0; 1297 1298 final int numWakeLocks = mWakeLocks.size(); 1299 for (int i = 0; i < numWakeLocks; i++) { 1300 final WakeLock wakeLock = mWakeLocks.get(i); 1301 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1302 case PowerManager.PARTIAL_WAKE_LOCK: 1303 mWakeLockSummary |= WAKE_LOCK_CPU; 1304 break; 1305 case PowerManager.FULL_WAKE_LOCK: 1306 if (mWakefulness != WAKEFULNESS_ASLEEP) { 1307 mWakeLockSummary |= WAKE_LOCK_CPU 1308 | WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1309 if (mWakefulness == WAKEFULNESS_AWAKE) { 1310 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1311 } 1312 } 1313 break; 1314 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1315 if (mWakefulness != WAKEFULNESS_ASLEEP) { 1316 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_SCREEN_BRIGHT; 1317 if (mWakefulness == WAKEFULNESS_AWAKE) { 1318 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1319 } 1320 } 1321 break; 1322 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1323 if (mWakefulness != WAKEFULNESS_ASLEEP) { 1324 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_SCREEN_DIM; 1325 if (mWakefulness == WAKEFULNESS_AWAKE) { 1326 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1327 } 1328 } 1329 break; 1330 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1331 if (mWakefulness != WAKEFULNESS_ASLEEP) { 1332 mWakeLockSummary |= WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1333 } 1334 break; 1335 } 1336 } 1337 1338 if (DEBUG_SPEW) { 1339 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1340 + wakefulnessToString(mWakefulness) 1341 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1342 } 1343 } 1344 } 1345 1346 /** 1347 * Updates the value of mUserActivitySummary to summarize the user requested 1348 * state of the system such as whether the screen should be bright or dim. 1349 * Note that user activity is ignored when the system is asleep. 1350 * 1351 * This function must have no other side-effects. 1352 */ 1353 private void updateUserActivitySummaryLocked(long now, int dirty) { 1354 // Update the status of the user activity timeout timer. 1355 if ((dirty & (DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1356 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1357 1358 long nextTimeout = 0; 1359 if (mWakefulness != WAKEFULNESS_ASLEEP) { 1360 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1361 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1362 1363 mUserActivitySummary = 0; 1364 if (mLastUserActivityTime >= mLastWakeTime) { 1365 nextTimeout = mLastUserActivityTime 1366 + screenOffTimeout - screenDimDuration; 1367 if (now < nextTimeout) { 1368 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1369 } else { 1370 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1371 if (now < nextTimeout) { 1372 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1373 } 1374 } 1375 } 1376 if (mUserActivitySummary == 0 1377 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1378 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1379 if (now < nextTimeout 1380 && mDisplayPowerRequest.screenState 1381 != DisplayPowerRequest.SCREEN_STATE_OFF) { 1382 mUserActivitySummary = mDisplayPowerRequest.screenState 1383 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1384 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1385 } 1386 } 1387 if (mUserActivitySummary != 0) { 1388 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1389 msg.setAsynchronous(true); 1390 mHandler.sendMessageAtTime(msg, nextTimeout); 1391 } 1392 } else { 1393 mUserActivitySummary = 0; 1394 } 1395 1396 if (DEBUG_SPEW) { 1397 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1398 + wakefulnessToString(mWakefulness) 1399 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1400 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1401 } 1402 } 1403 } 1404 1405 /** 1406 * Called when a user activity timeout has occurred. 1407 * Simply indicates that something about user activity has changed so that the new 1408 * state can be recomputed when the power state is updated. 1409 * 1410 * This function must have no other side-effects besides setting the dirty 1411 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1412 */ 1413 private void handleUserActivityTimeout() { // runs on handler thread 1414 synchronized (mLock) { 1415 if (DEBUG_SPEW) { 1416 Slog.d(TAG, "handleUserActivityTimeout"); 1417 } 1418 1419 mDirty |= DIRTY_USER_ACTIVITY; 1420 updatePowerStateLocked(); 1421 } 1422 } 1423 1424 private int getScreenOffTimeoutLocked() { 1425 int timeout = mScreenOffTimeoutSetting; 1426 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1427 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1428 } 1429 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1430 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1431 } 1432 return Math.max(timeout, MINIMUM_SCREEN_OFF_TIMEOUT); 1433 } 1434 1435 private int getScreenDimDurationLocked(int screenOffTimeout) { 1436 return Math.min(SCREEN_DIM_DURATION, 1437 (int)(screenOffTimeout * MAXIMUM_SCREEN_DIM_RATIO)); 1438 } 1439 1440 /** 1441 * Updates the wakefulness of the device. 1442 * 1443 * This is the function that decides whether the device should start napping 1444 * based on the current wake locks and user activity state. It may modify mDirty 1445 * if the wakefulness changes. 1446 * 1447 * Returns true if the wakefulness changed and we need to restart power state calculation. 1448 */ 1449 private boolean updateWakefulnessLocked(int dirty) { 1450 boolean changed = false; 1451 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1452 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE 1453 | DIRTY_DOCK_STATE)) != 0) { 1454 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1455 if (DEBUG_SPEW) { 1456 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1457 } 1458 final long time = SystemClock.uptimeMillis(); 1459 if (shouldNapAtBedTimeLocked()) { 1460 changed = napNoUpdateLocked(time); 1461 } else { 1462 changed = goToSleepNoUpdateLocked(time, 1463 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1464 } 1465 } 1466 } 1467 return changed; 1468 } 1469 1470 /** 1471 * Returns true if the device should automatically nap and start dreaming when the user 1472 * activity timeout has expired and it's bedtime. 1473 */ 1474 private boolean shouldNapAtBedTimeLocked() { 1475 return mDreamsActivateOnSleepSetting 1476 || (mDreamsActivateOnDockSetting 1477 && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED); 1478 } 1479 1480 /** 1481 * Returns true if the device should go to sleep now. 1482 * Also used when exiting a dream to determine whether we should go back 1483 * to being fully awake or else go to sleep for good. 1484 */ 1485 private boolean isItBedTimeYetLocked() { 1486 return mBootCompleted && !isBeingKeptAwakeLocked(); 1487 } 1488 1489 /** 1490 * Returns true if the device is being kept awake by a wake lock, user activity 1491 * or the stay on while powered setting. We also keep the phone awake when 1492 * the proximity sensor returns a positive result so that the device does not 1493 * lock while in a phone call. This function only controls whether the device 1494 * will go to sleep or dream which is independent of whether it will be allowed 1495 * to suspend. 1496 */ 1497 private boolean isBeingKeptAwakeLocked() { 1498 return mStayOn 1499 || mProximityPositive 1500 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1501 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1502 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1503 } 1504 1505 /** 1506 * Determines whether to post a message to the sandman to update the dream state. 1507 */ 1508 private void updateDreamLocked(int dirty) { 1509 if ((dirty & (DIRTY_WAKEFULNESS 1510 | DIRTY_USER_ACTIVITY 1511 | DIRTY_WAKE_LOCKS 1512 | DIRTY_BOOT_COMPLETED 1513 | DIRTY_SETTINGS 1514 | DIRTY_IS_POWERED 1515 | DIRTY_STAY_ON 1516 | DIRTY_PROXIMITY_POSITIVE 1517 | DIRTY_BATTERY_STATE)) != 0) { 1518 scheduleSandmanLocked(); 1519 } 1520 } 1521 1522 private void scheduleSandmanLocked() { 1523 if (!mSandmanScheduled) { 1524 mSandmanScheduled = true; 1525 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1526 msg.setAsynchronous(true); 1527 mHandler.sendMessage(msg); 1528 } 1529 } 1530 1531 /** 1532 * Called when the device enters or exits a napping or dreaming state. 1533 * 1534 * We do this asynchronously because we must call out of the power manager to start 1535 * the dream and we don't want to hold our lock while doing so. There is a risk that 1536 * the device will wake or go to sleep in the meantime so we have to handle that case. 1537 */ 1538 private void handleSandman() { // runs on handler thread 1539 // Handle preconditions. 1540 boolean startDreaming = false; 1541 synchronized (mLock) { 1542 mSandmanScheduled = false; 1543 boolean canDream = canDreamLocked(); 1544 if (DEBUG_SPEW) { 1545 Slog.d(TAG, "handleSandman: canDream=" + canDream 1546 + ", mWakefulness=" + wakefulnessToString(mWakefulness)); 1547 } 1548 1549 if (canDream && mWakefulness == WAKEFULNESS_NAPPING) { 1550 startDreaming = true; 1551 } 1552 } 1553 1554 // Start dreaming if needed. 1555 // We only control the dream on the handler thread, so we don't need to worry about 1556 // concurrent attempts to start or stop the dream. 1557 boolean isDreaming = false; 1558 if (mDreamManager != null) { 1559 if (startDreaming) { 1560 mDreamManager.startDream(); 1561 } 1562 isDreaming = mDreamManager.isDreaming(); 1563 } 1564 1565 // Update dream state. 1566 // We might need to stop the dream again if the preconditions changed. 1567 boolean continueDreaming = false; 1568 synchronized (mLock) { 1569 if (isDreaming && canDreamLocked()) { 1570 if (mWakefulness == WAKEFULNESS_NAPPING) { 1571 mWakefulness = WAKEFULNESS_DREAMING; 1572 mDirty |= DIRTY_WAKEFULNESS; 1573 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1574 updatePowerStateLocked(); 1575 continueDreaming = true; 1576 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1577 if (!isBeingKeptAwakeLocked() 1578 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1579 - DREAM_BATTERY_LEVEL_DRAIN_CUTOFF) { 1580 // If the user activity timeout expired and the battery appears 1581 // to be draining faster than it is charging then stop dreaming 1582 // and go to sleep. 1583 Slog.i(TAG, "Stopping dream because the battery appears to " 1584 + "be draining faster than it is charging. " 1585 + "Battery level when dream started: " 1586 + mBatteryLevelWhenDreamStarted + "%. " 1587 + "Battery level now: " + mBatteryLevel + "%."); 1588 } else { 1589 continueDreaming = true; 1590 } 1591 } 1592 } 1593 if (!continueDreaming) { 1594 handleDreamFinishedLocked(); 1595 } 1596 } 1597 1598 // Stop dreaming if needed. 1599 // It's possible that something else changed to make us need to start the dream again. 1600 // If so, then the power manager will have posted another message to the handler 1601 // to take care of it later. 1602 if (mDreamManager != null) { 1603 if (!continueDreaming) { 1604 mDreamManager.stopDream(); 1605 } 1606 } 1607 } 1608 1609 /** 1610 * Returns true if the device is allowed to dream in its current state 1611 * assuming that it is currently napping or dreaming. 1612 */ 1613 private boolean canDreamLocked() { 1614 return mDreamsSupportedConfig 1615 && mDreamsEnabledSetting 1616 && mDisplayPowerRequest.screenState != DisplayPowerRequest.SCREEN_STATE_OFF 1617 && mBootCompleted 1618 && (mIsPowered || isBeingKeptAwakeLocked()); 1619 } 1620 1621 /** 1622 * Called when a dream is ending to figure out what to do next. 1623 */ 1624 private void handleDreamFinishedLocked() { 1625 if (mWakefulness == WAKEFULNESS_NAPPING 1626 || mWakefulness == WAKEFULNESS_DREAMING) { 1627 if (isItBedTimeYetLocked()) { 1628 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1629 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1630 updatePowerStateLocked(); 1631 } else { 1632 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1633 updatePowerStateLocked(); 1634 } 1635 } 1636 } 1637 1638 private void handleScreenOnBlockerReleased() { 1639 synchronized (mLock) { 1640 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1641 updatePowerStateLocked(); 1642 } 1643 } 1644 1645 /** 1646 * Updates the display power state asynchronously. 1647 * When the update is finished, mDisplayReady will be set to true. The display 1648 * controller posts a message to tell us when the actual display power state 1649 * has been updated so we come back here to double-check and finish up. 1650 * 1651 * This function recalculates the display power state each time. 1652 */ 1653 private void updateDisplayPowerStateLocked(int dirty) { 1654 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1655 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1656 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1657 int newScreenState = getDesiredScreenPowerStateLocked(); 1658 if (newScreenState != mDisplayPowerRequest.screenState) { 1659 if (newScreenState == DisplayPowerRequest.SCREEN_STATE_OFF 1660 && mDisplayPowerRequest.screenState 1661 != DisplayPowerRequest.SCREEN_STATE_OFF) { 1662 mLastScreenOffEventElapsedRealTime = SystemClock.elapsedRealtime(); 1663 } 1664 1665 mDisplayPowerRequest.screenState = newScreenState; 1666 nativeSetPowerState( 1667 newScreenState != DisplayPowerRequest.SCREEN_STATE_OFF, 1668 newScreenState == DisplayPowerRequest.SCREEN_STATE_BRIGHT); 1669 } 1670 1671 int screenBrightness = mScreenBrightnessSettingDefault; 1672 float screenAutoBrightnessAdjustment = 0.0f; 1673 boolean autoBrightness = (mScreenBrightnessModeSetting == 1674 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1675 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1676 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1677 autoBrightness = false; 1678 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1679 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1680 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1681 screenBrightness = mScreenBrightnessSetting; 1682 } 1683 if (autoBrightness) { 1684 screenBrightness = mScreenBrightnessSettingDefault; 1685 if (isValidAutoBrightnessAdjustment( 1686 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1687 screenAutoBrightnessAdjustment = 1688 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1689 } else if (isValidAutoBrightnessAdjustment( 1690 mScreenAutoBrightnessAdjustmentSetting)) { 1691 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1692 } 1693 } 1694 screenBrightness = Math.max(Math.min(screenBrightness, 1695 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1696 screenAutoBrightnessAdjustment = Math.max(Math.min( 1697 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1698 mDisplayPowerRequest.screenBrightness = screenBrightness; 1699 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1700 screenAutoBrightnessAdjustment; 1701 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1702 1703 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1704 1705 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1706 1707 mDisplayReady = mDisplayPowerController.requestPowerState(mDisplayPowerRequest, 1708 mRequestWaitForNegativeProximity); 1709 mRequestWaitForNegativeProximity = false; 1710 1711 if (DEBUG_SPEW) { 1712 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1713 + ", newScreenState=" + newScreenState 1714 + ", mWakefulness=" + mWakefulness 1715 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1716 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1717 + ", mBootCompleted=" + mBootCompleted); 1718 } 1719 } 1720 } 1721 1722 private static boolean isValidBrightness(int value) { 1723 return value >= 0 && value <= 255; 1724 } 1725 1726 private static boolean isValidAutoBrightnessAdjustment(float value) { 1727 // Handles NaN by always returning false. 1728 return value >= -1.0f && value <= 1.0f; 1729 } 1730 1731 private int getDesiredScreenPowerStateLocked() { 1732 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1733 return DisplayPowerRequest.SCREEN_STATE_OFF; 1734 } 1735 1736 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1737 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1738 || !mBootCompleted) { 1739 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1740 } 1741 1742 return DisplayPowerRequest.SCREEN_STATE_DIM; 1743 } 1744 1745 private final DisplayPowerController.Callbacks mDisplayPowerControllerCallbacks = 1746 new DisplayPowerController.Callbacks() { 1747 @Override 1748 public void onStateChanged() { 1749 synchronized (mLock) { 1750 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1751 updatePowerStateLocked(); 1752 } 1753 } 1754 1755 @Override 1756 public void onProximityPositive() { 1757 synchronized (mLock) { 1758 mProximityPositive = true; 1759 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1760 updatePowerStateLocked(); 1761 } 1762 } 1763 1764 @Override 1765 public void onProximityNegative() { 1766 synchronized (mLock) { 1767 mProximityPositive = false; 1768 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1769 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1770 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1771 updatePowerStateLocked(); 1772 } 1773 } 1774 }; 1775 1776 private boolean shouldUseProximitySensorLocked() { 1777 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1778 } 1779 1780 /** 1781 * Updates the suspend blocker that keeps the CPU alive. 1782 * 1783 * This function must have no other side-effects. 1784 */ 1785 private void updateSuspendBlockerLocked() { 1786 final boolean needWakeLockSuspendBlocker = ((mWakeLockSummary & WAKE_LOCK_CPU) != 0); 1787 final boolean needDisplaySuspendBlocker = needDisplaySuspendBlocker(); 1788 1789 // First acquire suspend blockers if needed. 1790 if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) { 1791 mWakeLockSuspendBlocker.acquire(); 1792 mHoldingWakeLockSuspendBlocker = true; 1793 } 1794 if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) { 1795 mDisplaySuspendBlocker.acquire(); 1796 mHoldingDisplaySuspendBlocker = true; 1797 } 1798 1799 // Then release suspend blockers if needed. 1800 if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) { 1801 mWakeLockSuspendBlocker.release(); 1802 mHoldingWakeLockSuspendBlocker = false; 1803 } 1804 if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) { 1805 mDisplaySuspendBlocker.release(); 1806 mHoldingDisplaySuspendBlocker = false; 1807 } 1808 } 1809 1810 /** 1811 * Return true if we must keep a suspend blocker active on behalf of the display. 1812 * We do so if the screen is on or is in transition between states. 1813 */ 1814 private boolean needDisplaySuspendBlocker() { 1815 if (!mDisplayReady) { 1816 return true; 1817 } 1818 if (mDisplayPowerRequest.screenState != DisplayPowerRequest.SCREEN_STATE_OFF) { 1819 // If we asked for the screen to be on but it is off due to the proximity 1820 // sensor then we may suspend but only if the configuration allows it. 1821 // On some hardware it may not be safe to suspend because the proximity 1822 // sensor may not be correctly configured as a wake-up source. 1823 if (!mDisplayPowerRequest.useProximitySensor || !mProximityPositive 1824 || !mSuspendWhenScreenOffDueToProximityConfig) { 1825 return true; 1826 } 1827 } 1828 return false; 1829 } 1830 1831 @Override // Binder call 1832 public boolean isScreenOn() { 1833 final long ident = Binder.clearCallingIdentity(); 1834 try { 1835 return isScreenOnInternal(); 1836 } finally { 1837 Binder.restoreCallingIdentity(ident); 1838 } 1839 } 1840 1841 private boolean isScreenOnInternal() { 1842 synchronized (mLock) { 1843 return !mSystemReady 1844 || mDisplayPowerRequest.screenState != DisplayPowerRequest.SCREEN_STATE_OFF; 1845 } 1846 } 1847 1848 private void handleBatteryStateChangedLocked() { 1849 mDirty |= DIRTY_BATTERY_STATE; 1850 updatePowerStateLocked(); 1851 } 1852 1853 private void startWatchingForBootAnimationFinished() { 1854 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1855 } 1856 1857 private void checkIfBootAnimationFinished() { 1858 if (DEBUG) { 1859 Slog.d(TAG, "Check if boot animation finished..."); 1860 } 1861 1862 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1863 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1864 BOOT_ANIMATION_POLL_INTERVAL); 1865 return; 1866 } 1867 1868 synchronized (mLock) { 1869 if (!mBootCompleted) { 1870 Slog.i(TAG, "Boot animation finished."); 1871 handleBootCompletedLocked(); 1872 } 1873 } 1874 } 1875 1876 private void handleBootCompletedLocked() { 1877 final long now = SystemClock.uptimeMillis(); 1878 mBootCompleted = true; 1879 mDirty |= DIRTY_BOOT_COMPLETED; 1880 userActivityNoUpdateLocked( 1881 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1882 updatePowerStateLocked(); 1883 } 1884 1885 /** 1886 * Reboots the device. 1887 * 1888 * @param confirm If true, shows a reboot confirmation dialog. 1889 * @param reason The reason for the reboot, or null if none. 1890 * @param wait If true, this call waits for the reboot to complete and does not return. 1891 */ 1892 @Override // Binder call 1893 public void reboot(boolean confirm, String reason, boolean wait) { 1894 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 1895 1896 final long ident = Binder.clearCallingIdentity(); 1897 try { 1898 shutdownOrRebootInternal(false, confirm, reason, wait); 1899 } finally { 1900 Binder.restoreCallingIdentity(ident); 1901 } 1902 } 1903 1904 /** 1905 * Shuts down the device. 1906 * 1907 * @param confirm If true, shows a shutdown confirmation dialog. 1908 * @param wait If true, this call waits for the shutdown to complete and does not return. 1909 */ 1910 @Override // Binder call 1911 public void shutdown(boolean confirm, boolean wait) { 1912 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 1913 1914 final long ident = Binder.clearCallingIdentity(); 1915 try { 1916 shutdownOrRebootInternal(true, confirm, null, wait); 1917 } finally { 1918 Binder.restoreCallingIdentity(ident); 1919 } 1920 } 1921 1922 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1923 final String reason, boolean wait) { 1924 if (mHandler == null || !mSystemReady) { 1925 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1926 } 1927 1928 Runnable runnable = new Runnable() { 1929 @Override 1930 public void run() { 1931 synchronized (this) { 1932 if (shutdown) { 1933 ShutdownThread.shutdown(mContext, confirm); 1934 } else { 1935 ShutdownThread.reboot(mContext, reason, confirm); 1936 } 1937 } 1938 } 1939 }; 1940 1941 // ShutdownThread must run on a looper capable of displaying the UI. 1942 Message msg = Message.obtain(mHandler, runnable); 1943 msg.setAsynchronous(true); 1944 mHandler.sendMessage(msg); 1945 1946 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 1947 if (wait) { 1948 synchronized (runnable) { 1949 while (true) { 1950 try { 1951 runnable.wait(); 1952 } catch (InterruptedException e) { 1953 } 1954 } 1955 } 1956 } 1957 } 1958 1959 /** 1960 * Crash the runtime (causing a complete restart of the Android framework). 1961 * Requires REBOOT permission. Mostly for testing. Should not return. 1962 */ 1963 @Override // Binder call 1964 public void crash(String message) { 1965 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 1966 1967 final long ident = Binder.clearCallingIdentity(); 1968 try { 1969 crashInternal(message); 1970 } finally { 1971 Binder.restoreCallingIdentity(ident); 1972 } 1973 } 1974 1975 private void crashInternal(final String message) { 1976 Thread t = new Thread("PowerManagerService.crash()") { 1977 @Override 1978 public void run() { 1979 throw new RuntimeException(message); 1980 } 1981 }; 1982 try { 1983 t.start(); 1984 t.join(); 1985 } catch (InterruptedException e) { 1986 Log.wtf(TAG, e); 1987 } 1988 } 1989 1990 /** 1991 * Set the setting that determines whether the device stays on when plugged in. 1992 * The argument is a bit string, with each bit specifying a power source that, 1993 * when the device is connected to that source, causes the device to stay on. 1994 * See {@link android.os.BatteryManager} for the list of power sources that 1995 * can be specified. Current values include {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 1996 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 1997 * 1998 * Used by "adb shell svc power stayon ..." 1999 * 2000 * @param val an {@code int} containing the bits that specify which power sources 2001 * should cause the device to stay on. 2002 */ 2003 @Override // Binder call 2004 public void setStayOnSetting(int val) { 2005 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WRITE_SETTINGS, null); 2006 2007 final long ident = Binder.clearCallingIdentity(); 2008 try { 2009 setStayOnSettingInternal(val); 2010 } finally { 2011 Binder.restoreCallingIdentity(ident); 2012 } 2013 } 2014 2015 private void setStayOnSettingInternal(int val) { 2016 Settings.Global.putInt(mContext.getContentResolver(), 2017 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 2018 } 2019 2020 /** 2021 * Used by device administration to set the maximum screen off timeout. 2022 * 2023 * This method must only be called by the device administration policy manager. 2024 */ 2025 @Override // Binder call 2026 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 2027 final long ident = Binder.clearCallingIdentity(); 2028 try { 2029 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 2030 } finally { 2031 Binder.restoreCallingIdentity(ident); 2032 } 2033 } 2034 2035 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 2036 synchronized (mLock) { 2037 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 2038 mDirty |= DIRTY_SETTINGS; 2039 updatePowerStateLocked(); 2040 } 2041 } 2042 2043 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 2044 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 2045 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 2046 } 2047 2048 /** 2049 * Used by the phone application to make the attention LED flash when ringing. 2050 */ 2051 @Override // Binder call 2052 public void setAttentionLight(boolean on, int color) { 2053 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2054 2055 final long ident = Binder.clearCallingIdentity(); 2056 try { 2057 setAttentionLightInternal(on, color); 2058 } finally { 2059 Binder.restoreCallingIdentity(ident); 2060 } 2061 } 2062 2063 private void setAttentionLightInternal(boolean on, int color) { 2064 LightsService.Light light; 2065 synchronized (mLock) { 2066 if (!mSystemReady) { 2067 return; 2068 } 2069 light = mAttentionLight; 2070 } 2071 2072 // Control light outside of lock. 2073 light.setFlashing(color, LightsService.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 2074 } 2075 2076 /** 2077 * Used by the Watchdog. 2078 */ 2079 public long timeSinceScreenWasLastOn() { 2080 synchronized (mLock) { 2081 if (mDisplayPowerRequest.screenState != DisplayPowerRequest.SCREEN_STATE_OFF) { 2082 return 0; 2083 } 2084 return SystemClock.elapsedRealtime() - mLastScreenOffEventElapsedRealTime; 2085 } 2086 } 2087 2088 /** 2089 * Used by the window manager to override the screen brightness based on the 2090 * current foreground activity. 2091 * 2092 * This method must only be called by the window manager. 2093 * 2094 * @param brightness The overridden brightness, or -1 to disable the override. 2095 */ 2096 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 2097 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2098 2099 final long ident = Binder.clearCallingIdentity(); 2100 try { 2101 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 2102 } finally { 2103 Binder.restoreCallingIdentity(ident); 2104 } 2105 } 2106 2107 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 2108 synchronized (mLock) { 2109 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 2110 mScreenBrightnessOverrideFromWindowManager = brightness; 2111 mDirty |= DIRTY_SETTINGS; 2112 updatePowerStateLocked(); 2113 } 2114 } 2115 } 2116 2117 /** 2118 * Used by the window manager to override the button brightness based on the 2119 * current foreground activity. 2120 * 2121 * This method must only be called by the window manager. 2122 * 2123 * @param brightness The overridden brightness, or -1 to disable the override. 2124 */ 2125 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 2126 // Do nothing. 2127 // Button lights are not currently supported in the new implementation. 2128 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2129 } 2130 2131 /** 2132 * Used by the window manager to override the user activity timeout based on the 2133 * current foreground activity. It can only be used to make the timeout shorter 2134 * than usual, not longer. 2135 * 2136 * This method must only be called by the window manager. 2137 * 2138 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 2139 */ 2140 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 2141 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2142 2143 final long ident = Binder.clearCallingIdentity(); 2144 try { 2145 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 2146 } finally { 2147 Binder.restoreCallingIdentity(ident); 2148 } 2149 } 2150 2151 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 2152 synchronized (mLock) { 2153 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 2154 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 2155 mDirty |= DIRTY_SETTINGS; 2156 updatePowerStateLocked(); 2157 } 2158 } 2159 } 2160 2161 /** 2162 * Used by the settings application and brightness control widgets to 2163 * temporarily override the current screen brightness setting so that the 2164 * user can observe the effect of an intended settings change without applying 2165 * it immediately. 2166 * 2167 * The override will be canceled when the setting value is next updated. 2168 * 2169 * @param brightness The overridden brightness. 2170 * 2171 * @see android.provider.Settings.System#SCREEN_BRIGHTNESS 2172 */ 2173 @Override // Binder call 2174 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2175 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2176 2177 final long ident = Binder.clearCallingIdentity(); 2178 try { 2179 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2180 } finally { 2181 Binder.restoreCallingIdentity(ident); 2182 } 2183 } 2184 2185 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2186 synchronized (mLock) { 2187 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2188 mTemporaryScreenBrightnessSettingOverride = brightness; 2189 mDirty |= DIRTY_SETTINGS; 2190 updatePowerStateLocked(); 2191 } 2192 } 2193 } 2194 2195 /** 2196 * Used by the settings application and brightness control widgets to 2197 * temporarily override the current screen auto-brightness adjustment setting so that the 2198 * user can observe the effect of an intended settings change without applying 2199 * it immediately. 2200 * 2201 * The override will be canceled when the setting value is next updated. 2202 * 2203 * @param adj The overridden brightness, or Float.NaN to disable the override. 2204 * 2205 * @see Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2206 */ 2207 @Override // Binder call 2208 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2209 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2210 2211 final long ident = Binder.clearCallingIdentity(); 2212 try { 2213 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2214 } finally { 2215 Binder.restoreCallingIdentity(ident); 2216 } 2217 } 2218 2219 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2220 synchronized (mLock) { 2221 // Note: This condition handles NaN because NaN is not equal to any other 2222 // value, including itself. 2223 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2224 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2225 mDirty |= DIRTY_SETTINGS; 2226 updatePowerStateLocked(); 2227 } 2228 } 2229 } 2230 2231 /** 2232 * Low-level function turn the device off immediately, without trying 2233 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2234 */ 2235 public static void lowLevelShutdown() { 2236 SystemProperties.set("sys.powerctl", "shutdown"); 2237 } 2238 2239 /** 2240 * Low-level function to reboot the device. On success, this function 2241 * doesn't return. If more than 5 seconds passes from the time, 2242 * a reboot is requested, this method returns. 2243 * 2244 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2245 */ 2246 public static void lowLevelReboot(String reason) { 2247 if (reason == null) { 2248 reason = ""; 2249 } 2250 SystemProperties.set("sys.powerctl", "reboot," + reason); 2251 try { 2252 Thread.sleep(20000); 2253 } catch (InterruptedException e) { 2254 Thread.currentThread().interrupt(); 2255 } 2256 } 2257 2258 @Override // Watchdog.Monitor implementation 2259 public void monitor() { 2260 // Grab and release lock for watchdog monitor to detect deadlocks. 2261 synchronized (mLock) { 2262 } 2263 } 2264 2265 @Override // Binder call 2266 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2267 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2268 != PackageManager.PERMISSION_GRANTED) { 2269 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2270 + Binder.getCallingPid() 2271 + ", uid=" + Binder.getCallingUid()); 2272 return; 2273 } 2274 2275 pw.println("POWER MANAGER (dumpsys power)\n"); 2276 2277 final DisplayPowerController dpc; 2278 final WirelessChargerDetector wcd; 2279 synchronized (mLock) { 2280 pw.println("Power Manager State:"); 2281 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2282 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2283 pw.println(" mIsPowered=" + mIsPowered); 2284 pw.println(" mPlugType=" + mPlugType); 2285 pw.println(" mBatteryLevel=" + mBatteryLevel); 2286 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2287 pw.println(" mDockState=" + mDockState); 2288 pw.println(" mStayOn=" + mStayOn); 2289 pw.println(" mProximityPositive=" + mProximityPositive); 2290 pw.println(" mBootCompleted=" + mBootCompleted); 2291 pw.println(" mSystemReady=" + mSystemReady); 2292 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2293 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2294 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2295 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2296 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2297 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2298 pw.println(" mSendWakeUpFinishedNotificationWhenReady=" 2299 + mSendWakeUpFinishedNotificationWhenReady); 2300 pw.println(" mSendGoToSleepFinishedNotificationWhenReady=" 2301 + mSendGoToSleepFinishedNotificationWhenReady); 2302 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2303 pw.println(" mLastUserActivityTimeNoChangeLights=" 2304 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2305 pw.println(" mDisplayReady=" + mDisplayReady); 2306 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2307 pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker); 2308 2309 pw.println(); 2310 pw.println("Settings and Configuration:"); 2311 pw.println(" mWakeUpWhenPluggedOrUnpluggedConfig=" 2312 + mWakeUpWhenPluggedOrUnpluggedConfig); 2313 pw.println(" mSuspendWhenScreenOffDueToProximityConfig=" 2314 + mSuspendWhenScreenOffDueToProximityConfig); 2315 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2316 pw.println(" mDreamsEnabledByDefaultConfig=" + mDreamsEnabledByDefaultConfig); 2317 pw.println(" mDreamsActivatedOnSleepByDefaultConfig=" 2318 + mDreamsActivatedOnSleepByDefaultConfig); 2319 pw.println(" mDreamsActivatedOnDockByDefaultConfig=" 2320 + mDreamsActivatedOnDockByDefaultConfig); 2321 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2322 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2323 pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting); 2324 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2325 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2326 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2327 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2328 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2329 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2330 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2331 + mScreenAutoBrightnessAdjustmentSetting); 2332 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2333 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2334 + mScreenBrightnessOverrideFromWindowManager); 2335 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2336 + mUserActivityTimeoutOverrideFromWindowManager); 2337 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2338 + mTemporaryScreenBrightnessSettingOverride); 2339 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2340 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2341 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2342 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2343 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2344 2345 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2346 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2347 pw.println(); 2348 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2349 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2350 2351 pw.println(); 2352 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2353 for (WakeLock wl : mWakeLocks) { 2354 pw.println(" " + wl); 2355 } 2356 2357 pw.println(); 2358 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2359 for (SuspendBlocker sb : mSuspendBlockers) { 2360 pw.println(" " + sb); 2361 } 2362 2363 pw.println(); 2364 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2365 2366 pw.println(); 2367 pw.println("Display Blanker: " + mDisplayBlanker); 2368 2369 dpc = mDisplayPowerController; 2370 wcd = mWirelessChargerDetector; 2371 } 2372 2373 if (dpc != null) { 2374 dpc.dump(pw); 2375 } 2376 2377 if (wcd != null) { 2378 wcd.dump(pw); 2379 } 2380 } 2381 2382 private SuspendBlocker createSuspendBlockerLocked(String name) { 2383 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2384 mSuspendBlockers.add(suspendBlocker); 2385 return suspendBlocker; 2386 } 2387 2388 private static String wakefulnessToString(int wakefulness) { 2389 switch (wakefulness) { 2390 case WAKEFULNESS_ASLEEP: 2391 return "Asleep"; 2392 case WAKEFULNESS_AWAKE: 2393 return "Awake"; 2394 case WAKEFULNESS_DREAMING: 2395 return "Dreaming"; 2396 case WAKEFULNESS_NAPPING: 2397 return "Napping"; 2398 default: 2399 return Integer.toString(wakefulness); 2400 } 2401 } 2402 2403 private static WorkSource copyWorkSource(WorkSource workSource) { 2404 return workSource != null ? new WorkSource(workSource) : null; 2405 } 2406 2407 private final class BatteryReceiver extends BroadcastReceiver { 2408 @Override 2409 public void onReceive(Context context, Intent intent) { 2410 synchronized (mLock) { 2411 handleBatteryStateChangedLocked(); 2412 } 2413 } 2414 } 2415 2416 private final class BootCompletedReceiver extends BroadcastReceiver { 2417 @Override 2418 public void onReceive(Context context, Intent intent) { 2419 // This is our early signal that the system thinks it has finished booting. 2420 // However, the boot animation may still be running for a few more seconds 2421 // since it is ultimately in charge of when it terminates. 2422 // Defer transitioning into the boot completed state until the animation exits. 2423 // We do this so that the screen does not start to dim prematurely before 2424 // the user has actually had a chance to interact with the device. 2425 startWatchingForBootAnimationFinished(); 2426 } 2427 } 2428 2429 private final class DreamReceiver extends BroadcastReceiver { 2430 @Override 2431 public void onReceive(Context context, Intent intent) { 2432 synchronized (mLock) { 2433 scheduleSandmanLocked(); 2434 } 2435 } 2436 } 2437 2438 private final class UserSwitchedReceiver extends BroadcastReceiver { 2439 @Override 2440 public void onReceive(Context context, Intent intent) { 2441 synchronized (mLock) { 2442 handleSettingsChangedLocked(); 2443 } 2444 } 2445 } 2446 2447 private final class DockReceiver extends BroadcastReceiver { 2448 @Override 2449 public void onReceive(Context context, Intent intent) { 2450 synchronized (mLock) { 2451 int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 2452 Intent.EXTRA_DOCK_STATE_UNDOCKED); 2453 if (mDockState != dockState) { 2454 mDockState = dockState; 2455 mDirty |= DIRTY_DOCK_STATE; 2456 updatePowerStateLocked(); 2457 } 2458 } 2459 } 2460 } 2461 2462 private final class SettingsObserver extends ContentObserver { 2463 public SettingsObserver(Handler handler) { 2464 super(handler); 2465 } 2466 2467 @Override 2468 public void onChange(boolean selfChange, Uri uri) { 2469 synchronized (mLock) { 2470 handleSettingsChangedLocked(); 2471 } 2472 } 2473 } 2474 2475 /** 2476 * Handler for asynchronous operations performed by the power manager. 2477 */ 2478 private final class PowerManagerHandler extends Handler { 2479 public PowerManagerHandler(Looper looper) { 2480 super(looper, null, true /*async*/); 2481 } 2482 2483 @Override 2484 public void handleMessage(Message msg) { 2485 switch (msg.what) { 2486 case MSG_USER_ACTIVITY_TIMEOUT: 2487 handleUserActivityTimeout(); 2488 break; 2489 case MSG_SANDMAN: 2490 handleSandman(); 2491 break; 2492 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2493 handleScreenOnBlockerReleased(); 2494 break; 2495 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2496 checkIfBootAnimationFinished(); 2497 break; 2498 } 2499 } 2500 } 2501 2502 /** 2503 * Represents a wake lock that has been acquired by an application. 2504 */ 2505 private final class WakeLock implements IBinder.DeathRecipient { 2506 public final IBinder mLock; 2507 public int mFlags; 2508 public String mTag; 2509 public final String mPackageName; 2510 public WorkSource mWorkSource; 2511 public final int mOwnerUid; 2512 public final int mOwnerPid; 2513 public boolean mNotifiedAcquired; 2514 2515 public WakeLock(IBinder lock, int flags, String tag, String packageName, 2516 WorkSource workSource, int ownerUid, int ownerPid) { 2517 mLock = lock; 2518 mFlags = flags; 2519 mTag = tag; 2520 mPackageName = packageName; 2521 mWorkSource = copyWorkSource(workSource); 2522 mOwnerUid = ownerUid; 2523 mOwnerPid = ownerPid; 2524 } 2525 2526 @Override 2527 public void binderDied() { 2528 PowerManagerService.this.handleWakeLockDeath(this); 2529 } 2530 2531 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2532 int ownerUid, int ownerPid) { 2533 return mFlags == flags 2534 && mTag.equals(tag) 2535 && hasSameWorkSource(workSource) 2536 && mOwnerUid == ownerUid 2537 && mOwnerPid == ownerPid; 2538 } 2539 2540 public void updateProperties(int flags, String tag, String packageName, 2541 WorkSource workSource, int ownerUid, int ownerPid) { 2542 if (!mPackageName.equals(packageName)) { 2543 throw new IllegalStateException("Existing wake lock package name changed: " 2544 + mPackageName + " to " + packageName); 2545 } 2546 if (mOwnerUid != ownerUid) { 2547 throw new IllegalStateException("Existing wake lock uid changed: " 2548 + mOwnerUid + " to " + ownerUid); 2549 } 2550 if (mOwnerPid != ownerPid) { 2551 throw new IllegalStateException("Existing wake lock pid changed: " 2552 + mOwnerPid + " to " + ownerPid); 2553 } 2554 mFlags = flags; 2555 mTag = tag; 2556 updateWorkSource(workSource); 2557 } 2558 2559 public boolean hasSameWorkSource(WorkSource workSource) { 2560 return Objects.equal(mWorkSource, workSource); 2561 } 2562 2563 public void updateWorkSource(WorkSource workSource) { 2564 mWorkSource = copyWorkSource(workSource); 2565 } 2566 2567 @Override 2568 public String toString() { 2569 return getLockLevelString() 2570 + " '" + mTag + "'" + getLockFlagsString() 2571 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2572 } 2573 2574 private String getLockLevelString() { 2575 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2576 case PowerManager.FULL_WAKE_LOCK: 2577 return "FULL_WAKE_LOCK "; 2578 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2579 return "SCREEN_BRIGHT_WAKE_LOCK "; 2580 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2581 return "SCREEN_DIM_WAKE_LOCK "; 2582 case PowerManager.PARTIAL_WAKE_LOCK: 2583 return "PARTIAL_WAKE_LOCK "; 2584 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2585 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2586 default: 2587 return "??? "; 2588 } 2589 } 2590 2591 private String getLockFlagsString() { 2592 String result = ""; 2593 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2594 result += " ACQUIRE_CAUSES_WAKEUP"; 2595 } 2596 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2597 result += " ON_AFTER_RELEASE"; 2598 } 2599 return result; 2600 } 2601 } 2602 2603 private final class SuspendBlockerImpl implements SuspendBlocker { 2604 private final String mName; 2605 private int mReferenceCount; 2606 2607 public SuspendBlockerImpl(String name) { 2608 mName = name; 2609 } 2610 2611 @Override 2612 protected void finalize() throws Throwable { 2613 try { 2614 if (mReferenceCount != 0) { 2615 Log.wtf(TAG, "Suspend blocker \"" + mName 2616 + "\" was finalized without being released!"); 2617 mReferenceCount = 0; 2618 nativeReleaseSuspendBlocker(mName); 2619 } 2620 } finally { 2621 super.finalize(); 2622 } 2623 } 2624 2625 @Override 2626 public void acquire() { 2627 synchronized (this) { 2628 mReferenceCount += 1; 2629 if (mReferenceCount == 1) { 2630 if (DEBUG_SPEW) { 2631 Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\"."); 2632 } 2633 nativeAcquireSuspendBlocker(mName); 2634 } 2635 } 2636 } 2637 2638 @Override 2639 public void release() { 2640 synchronized (this) { 2641 mReferenceCount -= 1; 2642 if (mReferenceCount == 0) { 2643 if (DEBUG_SPEW) { 2644 Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\"."); 2645 } 2646 nativeReleaseSuspendBlocker(mName); 2647 } else if (mReferenceCount < 0) { 2648 Log.wtf(TAG, "Suspend blocker \"" + mName 2649 + "\" was released without being acquired!", new Throwable()); 2650 mReferenceCount = 0; 2651 } 2652 } 2653 } 2654 2655 @Override 2656 public String toString() { 2657 synchronized (this) { 2658 return mName + ": ref count=" + mReferenceCount; 2659 } 2660 } 2661 } 2662 2663 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2664 private int mNestCount; 2665 2666 public boolean isHeld() { 2667 synchronized (this) { 2668 return mNestCount != 0; 2669 } 2670 } 2671 2672 @Override 2673 public void acquire() { 2674 synchronized (this) { 2675 mNestCount += 1; 2676 if (DEBUG) { 2677 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2678 } 2679 } 2680 } 2681 2682 @Override 2683 public void release() { 2684 synchronized (this) { 2685 mNestCount -= 1; 2686 if (mNestCount < 0) { 2687 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2688 new Throwable()); 2689 mNestCount = 0; 2690 } 2691 if (mNestCount == 0) { 2692 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2693 } 2694 if (DEBUG) { 2695 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2696 } 2697 } 2698 } 2699 2700 @Override 2701 public String toString() { 2702 synchronized (this) { 2703 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2704 } 2705 } 2706 } 2707 2708 private final class DisplayBlankerImpl implements DisplayBlanker { 2709 private boolean mBlanked; 2710 2711 @Override 2712 public void blankAllDisplays() { 2713 synchronized (this) { 2714 mBlanked = true; 2715 mDisplayManagerService.blankAllDisplaysFromPowerManager(); 2716 nativeSetInteractive(false); 2717 nativeSetAutoSuspend(true); 2718 } 2719 } 2720 2721 @Override 2722 public void unblankAllDisplays() { 2723 synchronized (this) { 2724 nativeSetAutoSuspend(false); 2725 nativeSetInteractive(true); 2726 mDisplayManagerService.unblankAllDisplaysFromPowerManager(); 2727 mBlanked = false; 2728 } 2729 } 2730 2731 @Override 2732 public String toString() { 2733 synchronized (this) { 2734 return "blanked=" + mBlanked; 2735 } 2736 } 2737 } 2738 } 2739