PowerManagerService.java revision 016ff14f12900a12499a434b297b2192b62ff2da
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.power; 18 19import com.android.internal.app.IBatteryStats; 20import com.android.server.BatteryService; 21import com.android.server.EventLogTags; 22import com.android.server.LightsService; 23import com.android.server.TwilightService; 24import com.android.server.Watchdog; 25import com.android.server.am.ActivityManagerService; 26import com.android.server.display.DisplayManagerService; 27import com.android.server.dreams.DreamManagerService; 28 29import android.Manifest; 30import android.content.BroadcastReceiver; 31import android.content.ContentResolver; 32import android.content.Context; 33import android.content.Intent; 34import android.content.IntentFilter; 35import android.content.pm.PackageManager; 36import android.content.res.Resources; 37import android.database.ContentObserver; 38import android.net.Uri; 39import android.os.BatteryManager; 40import android.os.Binder; 41import android.os.Handler; 42import android.os.HandlerThread; 43import android.os.IBinder; 44import android.os.IPowerManager; 45import android.os.Looper; 46import android.os.Message; 47import android.os.PowerManager; 48import android.os.Process; 49import android.os.RemoteException; 50import android.os.SystemClock; 51import android.os.SystemService; 52import android.os.UserHandle; 53import android.os.WorkSource; 54import android.provider.Settings; 55import android.util.EventLog; 56import android.util.Log; 57import android.util.Slog; 58import android.util.TimeUtils; 59import android.view.WindowManagerPolicy; 60 61import java.io.FileDescriptor; 62import java.io.IOException; 63import java.io.PrintWriter; 64import java.util.ArrayList; 65 66import libcore.util.Objects; 67 68/** 69 * The power manager service is responsible for coordinating power management 70 * functions on the device. 71 */ 72public final class PowerManagerService extends IPowerManager.Stub 73 implements Watchdog.Monitor { 74 private static final String TAG = "PowerManagerService"; 75 76 private static final boolean DEBUG = false; 77 private static final boolean DEBUG_SPEW = DEBUG && true; 78 79 // Message: Sent when a user activity timeout occurs to update the power state. 80 private static final int MSG_USER_ACTIVITY_TIMEOUT = 1; 81 // Message: Sent when the device enters or exits a napping or dreaming state. 82 private static final int MSG_SANDMAN = 2; 83 // Message: Sent when the screen on blocker is released. 84 private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3; 85 // Message: Sent to poll whether the boot animation has terminated. 86 private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4; 87 88 // Dirty bit: mWakeLocks changed 89 private static final int DIRTY_WAKE_LOCKS = 1 << 0; 90 // Dirty bit: mWakefulness changed 91 private static final int DIRTY_WAKEFULNESS = 1 << 1; 92 // Dirty bit: user activity was poked or may have timed out 93 private static final int DIRTY_USER_ACTIVITY = 1 << 2; 94 // Dirty bit: actual display power state was updated asynchronously 95 private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3; 96 // Dirty bit: mBootCompleted changed 97 private static final int DIRTY_BOOT_COMPLETED = 1 << 4; 98 // Dirty bit: settings changed 99 private static final int DIRTY_SETTINGS = 1 << 5; 100 // Dirty bit: mIsPowered changed 101 private static final int DIRTY_IS_POWERED = 1 << 6; 102 // Dirty bit: mStayOn changed 103 private static final int DIRTY_STAY_ON = 1 << 7; 104 // Dirty bit: battery state changed 105 private static final int DIRTY_BATTERY_STATE = 1 << 8; 106 // Dirty bit: proximity state changed 107 private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9; 108 // Dirty bit: screen on blocker state became held or unheld 109 private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10; 110 111 // Wakefulness: The device is asleep and can only be awoken by a call to wakeUp(). 112 // The screen should be off or in the process of being turned off by the display controller. 113 private static final int WAKEFULNESS_ASLEEP = 0; 114 // Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep(). 115 // When the user activity timeout expires, the device may start napping or go to sleep. 116 private static final int WAKEFULNESS_AWAKE = 1; 117 // Wakefulness: The device is napping. It is deciding whether to dream or go to sleep 118 // but hasn't gotten around to it yet. It can be awoken by a call to wakeUp(), which 119 // ends the nap. User activity may brighten the screen but does not end the nap. 120 private static final int WAKEFULNESS_NAPPING = 2; 121 // Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(), 122 // which ends the dream. The device goes to sleep when goToSleep() is called, when 123 // the dream ends or when unplugged. 124 // User activity may brighten the screen but does not end the dream. 125 private static final int WAKEFULNESS_DREAMING = 3; 126 127 // Summarizes the state of all active wakelocks. 128 private static final int WAKE_LOCK_CPU = 1 << 0; 129 private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1; 130 private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2; 131 private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3; 132 private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4; 133 private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake 134 135 // Summarizes the user activity state. 136 private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0; 137 private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1; 138 139 // Default and minimum screen off timeout in milliseconds. 140 private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000; 141 private static final int MINIMUM_SCREEN_OFF_TIMEOUT = 10 * 1000; 142 143 // The screen dim duration, in milliseconds. 144 // This is subtracted from the end of the screen off timeout so the 145 // minimum screen off timeout should be longer than this. 146 private static final int SCREEN_DIM_DURATION = 7 * 1000; 147 148 // The maximum screen dim time expressed as a ratio relative to the screen 149 // off timeout. If the screen off timeout is very short then we want the 150 // dim timeout to also be quite short so that most of the time is spent on. 151 // Otherwise the user won't get much screen on time before dimming occurs. 152 private static final float MAXIMUM_SCREEN_DIM_RATIO = 0.2f; 153 154 // Upper bound on the battery charge percentage in order to consider turning 155 // the screen on when the device starts charging wirelessly. 156 // See point of use for more details. 157 private static final int WIRELESS_CHARGER_TURN_ON_BATTERY_LEVEL_LIMIT = 95; 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 HandlerThread mHandlerThread; 176 private PowerManagerHandler mHandler; 177 private WindowManagerPolicy mPolicy; 178 private Notifier mNotifier; 179 private DisplayPowerController mDisplayPowerController; 180 private SettingsObserver mSettingsObserver; 181 private DreamManagerService mDreamManager; 182 private LightsService.Light mAttentionLight; 183 184 private final Object mLock = new Object(); 185 186 // A bitfield that indicates what parts of the power state have 187 // changed and need to be recalculated. 188 private int mDirty; 189 190 // Indicates whether the device is awake or asleep or somewhere in between. 191 // This is distinct from the screen power state, which is managed separately. 192 private int mWakefulness; 193 194 // True if MSG_SANDMAN has been scheduled. 195 private boolean mSandmanScheduled; 196 197 // Table of all suspend blockers. 198 // There should only be a few of these. 199 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 200 201 // Table of all wake locks acquired by applications. 202 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 203 204 // A bitfield that summarizes the state of all active wakelocks. 205 private int mWakeLockSummary; 206 207 // If true, instructs the display controller to wait for the proximity sensor to 208 // go negative before turning the screen on. 209 private boolean mRequestWaitForNegativeProximity; 210 211 // Timestamp of the last time the device was awoken or put to sleep. 212 private long mLastWakeTime; 213 private long mLastSleepTime; 214 215 // True if we need to send a wake up or go to sleep finished notification 216 // when the display is ready. 217 private boolean mSendWakeUpFinishedNotificationWhenReady; 218 private boolean mSendGoToSleepFinishedNotificationWhenReady; 219 220 // Timestamp of the last call to user activity. 221 private long mLastUserActivityTime; 222 private long mLastUserActivityTimeNoChangeLights; 223 224 // A bitfield that summarizes the effect of the user activity timer. 225 // A zero value indicates that the user activity timer has expired. 226 private int mUserActivitySummary; 227 228 // The desired display power state. The actual state may lag behind the 229 // requested because it is updated asynchronously by the display power controller. 230 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 231 232 // The time the screen was last turned off, in elapsedRealtime() timebase. 233 private long mLastScreenOffEventElapsedRealTime; 234 235 // True if the display power state has been fully applied, which means the display 236 // is actually on or actually off or whatever was requested. 237 private boolean mDisplayReady; 238 239 // True if holding a wake-lock to block suspend of the CPU. 240 private boolean mHoldingWakeLockSuspendBlocker; 241 242 // The suspend blocker used to keep the CPU alive when wake locks have been acquired. 243 private final SuspendBlocker mWakeLockSuspendBlocker; 244 245 // The screen on blocker used to keep the screen from turning on while the lock 246 // screen is coming up. 247 private final ScreenOnBlockerImpl mScreenOnBlocker; 248 249 // The display blanker used to turn the screen on or off. 250 private final DisplayBlankerImpl mDisplayBlanker; 251 252 // True if systemReady() has been called. 253 private boolean mSystemReady; 254 255 // True if boot completed occurred. We keep the screen on until this happens. 256 private boolean mBootCompleted; 257 258 // True if the device is plugged into a power source. 259 private boolean mIsPowered; 260 261 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 262 private int mPlugType; 263 264 // The current battery level percentage. 265 private int mBatteryLevel; 266 267 // The battery level percentage at the time the dream started. 268 // This is used to terminate a dream and go to sleep if the battery is 269 // draining faster than it is charging and the user activity timeout has expired. 270 private int mBatteryLevelWhenDreamStarted; 271 272 // True if the device should wake up when plugged or unplugged. 273 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 274 275 // True if dreams are supported on this device. 276 private boolean mDreamsSupportedConfig; 277 278 // True if dreams are enabled by the user. 279 private boolean mDreamsEnabledSetting; 280 281 // True if dreams should be activated on sleep. 282 private boolean mDreamsActivateOnSleepSetting; 283 284 // The screen off timeout setting value in milliseconds. 285 private int mScreenOffTimeoutSetting; 286 287 // The maximum allowable screen off timeout according to the device 288 // administration policy. Overrides other settings. 289 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 290 291 // The stay on while plugged in setting. 292 // A bitfield of battery conditions under which to make the screen stay on. 293 private int mStayOnWhilePluggedInSetting; 294 295 // True if the device should stay on. 296 private boolean mStayOn; 297 298 // True if the proximity sensor reads a positive result. 299 private boolean mProximityPositive; 300 301 // Screen brightness setting limits. 302 private int mScreenBrightnessSettingMinimum; 303 private int mScreenBrightnessSettingMaximum; 304 private int mScreenBrightnessSettingDefault; 305 306 // The screen brightness setting, from 0 to 255. 307 // Use -1 if no value has been set. 308 private int mScreenBrightnessSetting; 309 310 // The screen auto-brightness adjustment setting, from -1 to 1. 311 // Use 0 if there is no adjustment. 312 private float mScreenAutoBrightnessAdjustmentSetting; 313 314 // The screen brightness mode. 315 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 316 private int mScreenBrightnessModeSetting; 317 318 // The screen brightness setting override from the window manager 319 // to allow the current foreground activity to override the brightness. 320 // Use -1 to disable. 321 private int mScreenBrightnessOverrideFromWindowManager = -1; 322 323 // The user activity timeout override from the window manager 324 // to allow the current foreground activity to override the user activity timeout. 325 // Use -1 to disable. 326 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 327 328 // The screen brightness setting override from the settings application 329 // to temporarily adjust the brightness until next updated, 330 // Use -1 to disable. 331 private int mTemporaryScreenBrightnessSettingOverride = -1; 332 333 // The screen brightness adjustment setting override from the settings 334 // application to temporarily adjust the auto-brightness adjustment factor 335 // until next updated, in the range -1..1. 336 // Use NaN to disable. 337 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 338 339 // Time when we last logged a warning about calling userActivity() without permission. 340 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 341 342 private native void nativeInit(); 343 private static native void nativeShutdown(); 344 private static native void nativeReboot(String reason) throws IOException; 345 346 private static native void nativeSetPowerState(boolean screenOn, boolean screenBright); 347 private static native void nativeAcquireSuspendBlocker(String name); 348 private static native void nativeReleaseSuspendBlocker(String name); 349 private static native void nativeSetInteractive(boolean enable); 350 private static native void nativeSetAutoSuspend(boolean enable); 351 352 public PowerManagerService() { 353 synchronized (mLock) { 354 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService"); 355 mWakeLockSuspendBlocker.acquire(); 356 mScreenOnBlocker = new ScreenOnBlockerImpl(); 357 mDisplayBlanker = new DisplayBlankerImpl(); 358 mHoldingWakeLockSuspendBlocker = true; 359 mWakefulness = WAKEFULNESS_AWAKE; 360 } 361 362 nativeInit(); 363 nativeSetPowerState(true, true); 364 } 365 366 /** 367 * Initialize the power manager. 368 * Must be called before any other functions within the power manager are called. 369 */ 370 public void init(Context context, LightsService ls, 371 ActivityManagerService am, BatteryService bs, IBatteryStats bss, 372 DisplayManagerService dm) { 373 mContext = context; 374 mLightsService = ls; 375 mBatteryService = bs; 376 mBatteryStats = bss; 377 mDisplayManagerService = dm; 378 mHandlerThread = new HandlerThread(TAG); 379 mHandlerThread.start(); 380 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 381 382 Watchdog.getInstance().addMonitor(this); 383 384 // Forcibly turn the screen on at boot so that it is in a known power state. 385 // We do this in init() rather than in the constructor because setting the 386 // screen state requires a call into surface flinger which then needs to call back 387 // into the activity manager to check permissions. Unfortunately the 388 // activity manager is not running when the constructor is called, so we 389 // have to defer setting the screen state until this point. 390 mDisplayBlanker.unblankAllDisplays(); 391 } 392 393 public void setPolicy(WindowManagerPolicy policy) { 394 synchronized (mLock) { 395 mPolicy = policy; 396 } 397 } 398 399 public void systemReady(TwilightService twilight, DreamManagerService dreamManager) { 400 synchronized (mLock) { 401 mSystemReady = true; 402 mDreamManager = dreamManager; 403 404 PowerManager pm = (PowerManager)mContext.getSystemService(Context.POWER_SERVICE); 405 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 406 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 407 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 408 409 // The notifier runs on the system server's main looper so as not to interfere 410 // with the animations and other critical functions of the power manager. 411 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 412 createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 413 mScreenOnBlocker, mPolicy); 414 415 // The display power controller runs on the power manager service's 416 // own handler thread. 417 mDisplayPowerController = new DisplayPowerController(mHandler.getLooper(), 418 mContext, mNotifier, mLightsService, twilight, 419 createSuspendBlockerLocked("PowerManagerService.Display"), 420 mDisplayBlanker, mDisplayPowerControllerCallbacks, mHandler); 421 422 mSettingsObserver = new SettingsObserver(mHandler); 423 mAttentionLight = mLightsService.getLight(LightsService.LIGHT_ID_ATTENTION); 424 425 // Register for broadcasts from other components of the system. 426 IntentFilter filter = new IntentFilter(); 427 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 428 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 429 430 filter = new IntentFilter(); 431 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 432 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 433 434 filter = new IntentFilter(); 435 filter.addAction(Intent.ACTION_DREAMING_STARTED); 436 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 437 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 438 439 filter = new IntentFilter(); 440 filter.addAction(Intent.ACTION_USER_SWITCHED); 441 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 442 443 // Register for settings changes. 444 final ContentResolver resolver = mContext.getContentResolver(); 445 resolver.registerContentObserver(Settings.Secure.getUriFor( 446 Settings.Secure.SCREENSAVER_ENABLED), 447 false, mSettingsObserver, UserHandle.USER_ALL); 448 resolver.registerContentObserver(Settings.Secure.getUriFor( 449 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 450 false, mSettingsObserver, UserHandle.USER_ALL); 451 resolver.registerContentObserver(Settings.System.getUriFor( 452 Settings.System.SCREEN_OFF_TIMEOUT), 453 false, mSettingsObserver, UserHandle.USER_ALL); 454 resolver.registerContentObserver(Settings.Global.getUriFor( 455 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 456 false, mSettingsObserver, UserHandle.USER_ALL); 457 resolver.registerContentObserver(Settings.System.getUriFor( 458 Settings.System.SCREEN_BRIGHTNESS), 459 false, mSettingsObserver, UserHandle.USER_ALL); 460 resolver.registerContentObserver(Settings.System.getUriFor( 461 Settings.System.SCREEN_BRIGHTNESS_MODE), 462 false, mSettingsObserver, UserHandle.USER_ALL); 463 464 // Go. 465 readConfigurationLocked(); 466 updateSettingsLocked(); 467 mDirty |= DIRTY_BATTERY_STATE; 468 updatePowerStateLocked(); 469 } 470 } 471 472 private void readConfigurationLocked() { 473 final Resources resources = mContext.getResources(); 474 475 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 476 com.android.internal.R.bool.config_unplugTurnsOnScreen); 477 mDreamsSupportedConfig = resources.getBoolean( 478 com.android.internal.R.bool.config_enableDreams); 479 } 480 481 private void updateSettingsLocked() { 482 final ContentResolver resolver = mContext.getContentResolver(); 483 484 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 485 Settings.Secure.SCREENSAVER_ENABLED, 0, 486 UserHandle.USER_CURRENT) != 0); 487 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 488 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 0, 489 UserHandle.USER_CURRENT) != 0); 490 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 491 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 492 UserHandle.USER_CURRENT); 493 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 494 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 495 496 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 497 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 498 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 499 UserHandle.USER_CURRENT); 500 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 501 mTemporaryScreenBrightnessSettingOverride = -1; 502 } 503 504 final float oldScreenAutoBrightnessAdjustmentSetting = 505 mScreenAutoBrightnessAdjustmentSetting; 506 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 507 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 508 UserHandle.USER_CURRENT); 509 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 510 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 511 } 512 513 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 514 Settings.System.SCREEN_BRIGHTNESS_MODE, 515 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 516 517 mDirty |= DIRTY_SETTINGS; 518 } 519 520 private void handleSettingsChangedLocked() { 521 updateSettingsLocked(); 522 updatePowerStateLocked(); 523 } 524 525 @Override // Binder call 526 public void acquireWakeLock(IBinder lock, int flags, String tag, WorkSource ws) { 527 if (lock == null) { 528 throw new IllegalArgumentException("lock must not be null"); 529 } 530 PowerManager.validateWakeLockParameters(flags, tag); 531 532 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 533 if (ws != null && ws.size() != 0) { 534 mContext.enforceCallingOrSelfPermission( 535 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 536 } else { 537 ws = null; 538 } 539 540 final int uid = Binder.getCallingUid(); 541 final int pid = Binder.getCallingPid(); 542 final long ident = Binder.clearCallingIdentity(); 543 try { 544 acquireWakeLockInternal(lock, flags, tag, ws, uid, pid); 545 } finally { 546 Binder.restoreCallingIdentity(ident); 547 } 548 } 549 550 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, WorkSource ws, 551 int uid, int pid) { 552 synchronized (mLock) { 553 if (DEBUG_SPEW) { 554 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 555 + ", flags=0x" + Integer.toHexString(flags) 556 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 557 } 558 559 WakeLock wakeLock; 560 int index = findWakeLockIndexLocked(lock); 561 if (index >= 0) { 562 wakeLock = mWakeLocks.get(index); 563 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 564 // Update existing wake lock. This shouldn't happen but is harmless. 565 notifyWakeLockReleasedLocked(wakeLock); 566 wakeLock.updateProperties(flags, tag, ws, uid, pid); 567 notifyWakeLockAcquiredLocked(wakeLock); 568 } 569 } else { 570 wakeLock = new WakeLock(lock, flags, tag, ws, uid, pid); 571 try { 572 lock.linkToDeath(wakeLock, 0); 573 } catch (RemoteException ex) { 574 throw new IllegalArgumentException("Wake lock is already dead."); 575 } 576 notifyWakeLockAcquiredLocked(wakeLock); 577 mWakeLocks.add(wakeLock); 578 } 579 580 applyWakeLockFlagsOnAcquireLocked(wakeLock); 581 mDirty |= DIRTY_WAKE_LOCKS; 582 updatePowerStateLocked(); 583 } 584 } 585 586 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 587 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 588 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 589 } 590 } 591 592 @Override // Binder call 593 public void releaseWakeLock(IBinder lock, int flags) { 594 if (lock == null) { 595 throw new IllegalArgumentException("lock must not be null"); 596 } 597 598 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 599 600 final long ident = Binder.clearCallingIdentity(); 601 try { 602 releaseWakeLockInternal(lock, flags); 603 } finally { 604 Binder.restoreCallingIdentity(ident); 605 } 606 } 607 608 private void releaseWakeLockInternal(IBinder lock, int flags) { 609 synchronized (mLock) { 610 if (DEBUG_SPEW) { 611 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 612 + ", flags=0x" + Integer.toHexString(flags)); 613 } 614 615 int index = findWakeLockIndexLocked(lock); 616 if (index < 0) { 617 return; 618 } 619 620 WakeLock wakeLock = mWakeLocks.get(index); 621 mWakeLocks.remove(index); 622 notifyWakeLockReleasedLocked(wakeLock); 623 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 624 625 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 626 mRequestWaitForNegativeProximity = true; 627 } 628 629 applyWakeLockFlagsOnReleaseLocked(wakeLock); 630 mDirty |= DIRTY_WAKE_LOCKS; 631 updatePowerStateLocked(); 632 } 633 } 634 635 private void handleWakeLockDeath(WakeLock wakeLock) { 636 synchronized (mLock) { 637 if (DEBUG_SPEW) { 638 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock)); 639 } 640 641 int index = mWakeLocks.indexOf(wakeLock); 642 if (index < 0) { 643 return; 644 } 645 646 mWakeLocks.remove(index); 647 notifyWakeLockReleasedLocked(wakeLock); 648 649 applyWakeLockFlagsOnReleaseLocked(wakeLock); 650 mDirty |= DIRTY_WAKE_LOCKS; 651 updatePowerStateLocked(); 652 } 653 } 654 655 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 656 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 657 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 658 PowerManager.USER_ACTIVITY_EVENT_OTHER, 659 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 660 wakeLock.mOwnerUid); 661 } 662 } 663 664 @Override // Binder call 665 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws) { 666 if (lock == null) { 667 throw new IllegalArgumentException("lock must not be null"); 668 } 669 670 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 671 if (ws != null && ws.size() != 0) { 672 mContext.enforceCallingOrSelfPermission( 673 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 674 } else { 675 ws = null; 676 } 677 678 final long ident = Binder.clearCallingIdentity(); 679 try { 680 updateWakeLockWorkSourceInternal(lock, ws); 681 } finally { 682 Binder.restoreCallingIdentity(ident); 683 } 684 } 685 686 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws) { 687 synchronized (mLock) { 688 int index = findWakeLockIndexLocked(lock); 689 if (index < 0) { 690 throw new IllegalArgumentException("Wake lock not active"); 691 } 692 693 WakeLock wakeLock = mWakeLocks.get(index); 694 if (!wakeLock.hasSameWorkSource(ws)) { 695 notifyWakeLockReleasedLocked(wakeLock); 696 wakeLock.updateWorkSource(ws); 697 notifyWakeLockAcquiredLocked(wakeLock); 698 } 699 } 700 } 701 702 private int findWakeLockIndexLocked(IBinder lock) { 703 final int count = mWakeLocks.size(); 704 for (int i = 0; i < count; i++) { 705 if (mWakeLocks.get(i).mLock == lock) { 706 return i; 707 } 708 } 709 return -1; 710 } 711 712 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 713 if (mSystemReady) { 714 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, 715 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 716 } 717 } 718 719 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 720 if (mSystemReady) { 721 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, 722 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 723 } 724 } 725 726 @Override // Binder call 727 public boolean isWakeLockLevelSupported(int level) { 728 final long ident = Binder.clearCallingIdentity(); 729 try { 730 return isWakeLockLevelSupportedInternal(level); 731 } finally { 732 Binder.restoreCallingIdentity(ident); 733 } 734 } 735 736 private boolean isWakeLockLevelSupportedInternal(int level) { 737 synchronized (mLock) { 738 switch (level) { 739 case PowerManager.PARTIAL_WAKE_LOCK: 740 case PowerManager.SCREEN_DIM_WAKE_LOCK: 741 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 742 case PowerManager.FULL_WAKE_LOCK: 743 return true; 744 745 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 746 return mSystemReady && mDisplayPowerController.isProximitySensorAvailable(); 747 748 default: 749 return false; 750 } 751 } 752 } 753 754 @Override // Binder call 755 public void userActivity(long eventTime, int event, int flags) { 756 final long now = SystemClock.uptimeMillis(); 757 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 758 != PackageManager.PERMISSION_GRANTED) { 759 // Once upon a time applications could call userActivity(). 760 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 761 // request instead of throwing a SecurityException so we don't break old apps. 762 synchronized (mLock) { 763 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 764 mLastWarningAboutUserActivityPermission = now; 765 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 766 + "caller does not have DEVICE_POWER permission. " 767 + "Please fix your app! " 768 + " pid=" + Binder.getCallingPid() 769 + " uid=" + Binder.getCallingUid()); 770 } 771 } 772 return; 773 } 774 775 if (eventTime > SystemClock.uptimeMillis()) { 776 throw new IllegalArgumentException("event time must not be in the future"); 777 } 778 779 final int uid = Binder.getCallingUid(); 780 final long ident = Binder.clearCallingIdentity(); 781 try { 782 userActivityInternal(eventTime, event, flags, uid); 783 } finally { 784 Binder.restoreCallingIdentity(ident); 785 } 786 } 787 788 // Called from native code. 789 private void userActivityFromNative(long eventTime, int event, int flags) { 790 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 791 } 792 793 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 794 synchronized (mLock) { 795 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 796 updatePowerStateLocked(); 797 } 798 } 799 } 800 801 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 802 if (DEBUG_SPEW) { 803 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 804 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 805 + ", uid=" + uid); 806 } 807 808 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 809 || mWakefulness == WAKEFULNESS_ASLEEP || !mBootCompleted || !mSystemReady) { 810 return false; 811 } 812 813 mNotifier.onUserActivity(event, uid); 814 815 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 816 if (eventTime > mLastUserActivityTimeNoChangeLights 817 && eventTime > mLastUserActivityTime) { 818 mLastUserActivityTimeNoChangeLights = eventTime; 819 mDirty |= DIRTY_USER_ACTIVITY; 820 return true; 821 } 822 } else { 823 if (eventTime > mLastUserActivityTime) { 824 mLastUserActivityTime = eventTime; 825 mDirty |= DIRTY_USER_ACTIVITY; 826 return true; 827 } 828 } 829 return false; 830 } 831 832 @Override // Binder call 833 public void wakeUp(long eventTime) { 834 if (eventTime > SystemClock.uptimeMillis()) { 835 throw new IllegalArgumentException("event time must not be in the future"); 836 } 837 838 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 839 840 final long ident = Binder.clearCallingIdentity(); 841 try { 842 wakeUpInternal(eventTime); 843 } finally { 844 Binder.restoreCallingIdentity(ident); 845 } 846 } 847 848 // Called from native code. 849 private void wakeUpFromNative(long eventTime) { 850 wakeUpInternal(eventTime); 851 } 852 853 private void wakeUpInternal(long eventTime) { 854 synchronized (mLock) { 855 if (wakeUpNoUpdateLocked(eventTime)) { 856 updatePowerStateLocked(); 857 } 858 } 859 } 860 861 private boolean wakeUpNoUpdateLocked(long eventTime) { 862 if (DEBUG_SPEW) { 863 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 864 } 865 866 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 867 || !mBootCompleted || !mSystemReady) { 868 return false; 869 } 870 871 switch (mWakefulness) { 872 case WAKEFULNESS_ASLEEP: 873 Slog.i(TAG, "Waking up from sleep..."); 874 sendPendingNotificationsLocked(); 875 mNotifier.onWakeUpStarted(); 876 mSendWakeUpFinishedNotificationWhenReady = true; 877 break; 878 case WAKEFULNESS_DREAMING: 879 Slog.i(TAG, "Waking up from dream..."); 880 break; 881 case WAKEFULNESS_NAPPING: 882 Slog.i(TAG, "Waking up from nap..."); 883 break; 884 } 885 886 mLastWakeTime = eventTime; 887 mWakefulness = WAKEFULNESS_AWAKE; 888 mDirty |= DIRTY_WAKEFULNESS; 889 890 userActivityNoUpdateLocked( 891 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 892 return true; 893 } 894 895 @Override // Binder call 896 public void goToSleep(long eventTime, int reason) { 897 if (eventTime > SystemClock.uptimeMillis()) { 898 throw new IllegalArgumentException("event time must not be in the future"); 899 } 900 901 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 902 903 final long ident = Binder.clearCallingIdentity(); 904 try { 905 goToSleepInternal(eventTime, reason); 906 } finally { 907 Binder.restoreCallingIdentity(ident); 908 } 909 } 910 911 // Called from native code. 912 private void goToSleepFromNative(long eventTime, int reason) { 913 goToSleepInternal(eventTime, reason); 914 } 915 916 private void goToSleepInternal(long eventTime, int reason) { 917 synchronized (mLock) { 918 if (goToSleepNoUpdateLocked(eventTime, reason)) { 919 updatePowerStateLocked(); 920 } 921 } 922 } 923 924 private boolean goToSleepNoUpdateLocked(long eventTime, int reason) { 925 if (DEBUG_SPEW) { 926 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime + ", reason=" + reason); 927 } 928 929 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 930 || !mBootCompleted || !mSystemReady) { 931 return false; 932 } 933 934 switch (reason) { 935 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 936 Slog.i(TAG, "Going to sleep due to device administration policy..."); 937 break; 938 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 939 Slog.i(TAG, "Going to sleep due to screen timeout..."); 940 break; 941 default: 942 Slog.i(TAG, "Going to sleep by user request..."); 943 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 944 break; 945 } 946 947 sendPendingNotificationsLocked(); 948 mNotifier.onGoToSleepStarted(reason); 949 mSendGoToSleepFinishedNotificationWhenReady = true; 950 951 mLastSleepTime = eventTime; 952 mDirty |= DIRTY_WAKEFULNESS; 953 mWakefulness = WAKEFULNESS_ASLEEP; 954 955 // Report the number of wake locks that will be cleared by going to sleep. 956 int numWakeLocksCleared = 0; 957 final int numWakeLocks = mWakeLocks.size(); 958 for (int i = 0; i < numWakeLocks; i++) { 959 final WakeLock wakeLock = mWakeLocks.get(i); 960 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 961 case PowerManager.FULL_WAKE_LOCK: 962 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 963 case PowerManager.SCREEN_DIM_WAKE_LOCK: 964 numWakeLocksCleared += 1; 965 break; 966 } 967 } 968 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 969 return true; 970 } 971 972 @Override // Binder call 973 public void nap(long eventTime) { 974 if (eventTime > SystemClock.uptimeMillis()) { 975 throw new IllegalArgumentException("event time must not be in the future"); 976 } 977 978 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 979 980 final long ident = Binder.clearCallingIdentity(); 981 try { 982 napInternal(eventTime); 983 } finally { 984 Binder.restoreCallingIdentity(ident); 985 } 986 } 987 988 private void napInternal(long eventTime) { 989 synchronized (mLock) { 990 if (napNoUpdateLocked(eventTime)) { 991 updatePowerStateLocked(); 992 } 993 } 994 } 995 996 private boolean napNoUpdateLocked(long eventTime) { 997 if (DEBUG_SPEW) { 998 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 999 } 1000 1001 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 1002 || !mBootCompleted || !mSystemReady) { 1003 return false; 1004 } 1005 1006 Slog.i(TAG, "Nap time..."); 1007 1008 mDirty |= DIRTY_WAKEFULNESS; 1009 mWakefulness = WAKEFULNESS_NAPPING; 1010 return true; 1011 } 1012 1013 /** 1014 * Updates the global power state based on dirty bits recorded in mDirty. 1015 * 1016 * This is the main function that performs power state transitions. 1017 * We centralize them here so that we can recompute the power state completely 1018 * each time something important changes, and ensure that we do it the same 1019 * way each time. The point is to gather all of the transition logic here. 1020 */ 1021 private void updatePowerStateLocked() { 1022 if (!mSystemReady || mDirty == 0) { 1023 return; 1024 } 1025 1026 // Phase 0: Basic state updates. 1027 updateIsPoweredLocked(mDirty); 1028 updateStayOnLocked(mDirty); 1029 1030 // Phase 1: Update wakefulness. 1031 // Loop because the wake lock and user activity computations are influenced 1032 // by changes in wakefulness. 1033 final long now = SystemClock.uptimeMillis(); 1034 int dirtyPhase2 = 0; 1035 for (;;) { 1036 int dirtyPhase1 = mDirty; 1037 dirtyPhase2 |= dirtyPhase1; 1038 mDirty = 0; 1039 1040 updateWakeLockSummaryLocked(dirtyPhase1); 1041 updateUserActivitySummaryLocked(now, dirtyPhase1); 1042 if (!updateWakefulnessLocked(dirtyPhase1)) { 1043 break; 1044 } 1045 } 1046 1047 // Phase 2: Update dreams and display power state. 1048 updateDreamLocked(dirtyPhase2); 1049 updateDisplayPowerStateLocked(dirtyPhase2); 1050 1051 // Phase 3: Send notifications, if needed. 1052 if (mDisplayReady) { 1053 sendPendingNotificationsLocked(); 1054 } 1055 1056 // Phase 4: Update suspend blocker. 1057 // Because we might release the last suspend blocker here, we need to make sure 1058 // we finished everything else first! 1059 updateSuspendBlockerLocked(); 1060 } 1061 1062 private void sendPendingNotificationsLocked() { 1063 if (mSendWakeUpFinishedNotificationWhenReady) { 1064 mSendWakeUpFinishedNotificationWhenReady = false; 1065 mNotifier.onWakeUpFinished(); 1066 } 1067 if (mSendGoToSleepFinishedNotificationWhenReady) { 1068 mSendGoToSleepFinishedNotificationWhenReady = false; 1069 mNotifier.onGoToSleepFinished(); 1070 } 1071 } 1072 1073 /** 1074 * Updates the value of mIsPowered. 1075 * Sets DIRTY_IS_POWERED if a change occurred. 1076 */ 1077 private void updateIsPoweredLocked(int dirty) { 1078 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1079 final boolean wasPowered = mIsPowered; 1080 final int oldPlugType = mPlugType; 1081 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1082 mPlugType = mBatteryService.getPlugType(); 1083 mBatteryLevel = mBatteryService.getBatteryLevel(); 1084 1085 if (DEBUG) { 1086 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1087 + ", mIsPowered=" + mIsPowered 1088 + ", oldPlugType=" + oldPlugType 1089 + ", mPlugType=" + mPlugType 1090 + ", mBatteryLevel=" + mBatteryLevel); 1091 } 1092 1093 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1094 mDirty |= DIRTY_IS_POWERED; 1095 1096 // Treat plugging and unplugging the devices as a user activity. 1097 // Users find it disconcerting when they plug or unplug the device 1098 // and it shuts off right away. 1099 // Some devices also wake the device when plugged or unplugged because 1100 // they don't have a charging LED. 1101 final long now = SystemClock.uptimeMillis(); 1102 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType)) { 1103 wakeUpNoUpdateLocked(now); 1104 } 1105 userActivityNoUpdateLocked( 1106 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1107 } 1108 } 1109 } 1110 1111 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked(boolean wasPowered, int oldPlugType) { 1112 // Don't wake when powered unless configured to do so. 1113 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1114 return false; 1115 } 1116 1117 // FIXME: Need more accurate detection of wireless chargers. 1118 // 1119 // We are unable to accurately detect whether the device is resting on the 1120 // charger unless it is actually receiving power. This causes us some grief 1121 // because the device might not appear to be plugged into the wireless charger 1122 // unless it actually charging. 1123 // 1124 // To avoid spuriously waking the screen, we apply a special policy to 1125 // wireless chargers. 1126 // 1127 // 1. Don't wake the device when unplugged from wireless charger because 1128 // it might be that the device is still resting on the wireless charger 1129 // but is not receiving power anymore because the battery is full. 1130 // 1131 // 2. Don't wake the device when plugged into a wireless charger if the 1132 // battery already appears to be mostly full. This situation may indicate 1133 // that the device was resting on the charger the whole time and simply 1134 // wasn't receiving power because the battery was full. We can't tell 1135 // whether the device was just placed on the charger or whether it has 1136 // been there for half of the night slowly discharging until it hit 1137 // the point where it needed to start charging again. 1138 if (wasPowered && !mIsPowered 1139 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1140 return false; 1141 } 1142 if (!wasPowered && mIsPowered 1143 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1144 && mBatteryLevel >= WIRELESS_CHARGER_TURN_ON_BATTERY_LEVEL_LIMIT) { 1145 return false; 1146 } 1147 1148 // If already dreaming and becoming powered, then don't wake. 1149 if (mIsPowered && (mWakefulness == WAKEFULNESS_NAPPING 1150 || mWakefulness == WAKEFULNESS_DREAMING)) { 1151 return false; 1152 } 1153 1154 // Otherwise wake up! 1155 return true; 1156 } 1157 1158 /** 1159 * Updates the value of mStayOn. 1160 * Sets DIRTY_STAY_ON if a change occurred. 1161 */ 1162 private void updateStayOnLocked(int dirty) { 1163 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1164 final boolean wasStayOn = mStayOn; 1165 if (mStayOnWhilePluggedInSetting != 0 1166 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1167 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1168 } else { 1169 mStayOn = false; 1170 } 1171 1172 if (mStayOn != wasStayOn) { 1173 mDirty |= DIRTY_STAY_ON; 1174 } 1175 } 1176 } 1177 1178 /** 1179 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1180 * Note that most wake-locks are ignored when the system is asleep. 1181 * 1182 * This function must have no other side-effects. 1183 */ 1184 private void updateWakeLockSummaryLocked(int dirty) { 1185 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1186 mWakeLockSummary = 0; 1187 1188 final int numWakeLocks = mWakeLocks.size(); 1189 for (int i = 0; i < numWakeLocks; i++) { 1190 final WakeLock wakeLock = mWakeLocks.get(i); 1191 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1192 case PowerManager.PARTIAL_WAKE_LOCK: 1193 mWakeLockSummary |= WAKE_LOCK_CPU; 1194 break; 1195 case PowerManager.FULL_WAKE_LOCK: 1196 if (mWakefulness != WAKEFULNESS_ASLEEP) { 1197 mWakeLockSummary |= WAKE_LOCK_CPU 1198 | WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1199 if (mWakefulness == WAKEFULNESS_AWAKE) { 1200 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1201 } 1202 } 1203 break; 1204 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1205 if (mWakefulness != WAKEFULNESS_ASLEEP) { 1206 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_SCREEN_BRIGHT; 1207 if (mWakefulness == WAKEFULNESS_AWAKE) { 1208 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1209 } 1210 } 1211 break; 1212 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1213 if (mWakefulness != WAKEFULNESS_ASLEEP) { 1214 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_SCREEN_DIM; 1215 if (mWakefulness == WAKEFULNESS_AWAKE) { 1216 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1217 } 1218 } 1219 break; 1220 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1221 if (mWakefulness != WAKEFULNESS_ASLEEP) { 1222 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1223 } 1224 break; 1225 } 1226 } 1227 1228 if (DEBUG_SPEW) { 1229 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1230 + wakefulnessToString(mWakefulness) 1231 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1232 } 1233 } 1234 } 1235 1236 /** 1237 * Updates the value of mUserActivitySummary to summarize the user requested 1238 * state of the system such as whether the screen should be bright or dim. 1239 * Note that user activity is ignored when the system is asleep. 1240 * 1241 * This function must have no other side-effects. 1242 */ 1243 private void updateUserActivitySummaryLocked(long now, int dirty) { 1244 // Update the status of the user activity timeout timer. 1245 if ((dirty & (DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1246 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1247 1248 long nextTimeout = 0; 1249 if (mWakefulness != WAKEFULNESS_ASLEEP) { 1250 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1251 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1252 1253 mUserActivitySummary = 0; 1254 if (mLastUserActivityTime >= mLastWakeTime) { 1255 nextTimeout = mLastUserActivityTime 1256 + screenOffTimeout - screenDimDuration; 1257 if (now < nextTimeout) { 1258 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1259 } else { 1260 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1261 if (now < nextTimeout) { 1262 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1263 } 1264 } 1265 } 1266 if (mUserActivitySummary == 0 1267 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1268 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1269 if (now < nextTimeout 1270 && mDisplayPowerRequest.screenState 1271 != DisplayPowerRequest.SCREEN_STATE_OFF) { 1272 mUserActivitySummary = mDisplayPowerRequest.screenState 1273 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1274 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1275 } 1276 } 1277 if (mUserActivitySummary != 0) { 1278 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1279 msg.setAsynchronous(true); 1280 mHandler.sendMessageAtTime(msg, nextTimeout); 1281 } 1282 } else { 1283 mUserActivitySummary = 0; 1284 } 1285 1286 if (DEBUG_SPEW) { 1287 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1288 + wakefulnessToString(mWakefulness) 1289 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1290 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1291 } 1292 } 1293 } 1294 1295 /** 1296 * Called when a user activity timeout has occurred. 1297 * Simply indicates that something about user activity has changed so that the new 1298 * state can be recomputed when the power state is updated. 1299 * 1300 * This function must have no other side-effects besides setting the dirty 1301 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1302 */ 1303 private void handleUserActivityTimeout() { // runs on handler thread 1304 synchronized (mLock) { 1305 if (DEBUG_SPEW) { 1306 Slog.d(TAG, "handleUserActivityTimeout"); 1307 } 1308 1309 mDirty |= DIRTY_USER_ACTIVITY; 1310 updatePowerStateLocked(); 1311 } 1312 } 1313 1314 private int getScreenOffTimeoutLocked() { 1315 int timeout = mScreenOffTimeoutSetting; 1316 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1317 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1318 } 1319 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1320 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1321 } 1322 return Math.max(timeout, MINIMUM_SCREEN_OFF_TIMEOUT); 1323 } 1324 1325 private int getScreenDimDurationLocked(int screenOffTimeout) { 1326 return Math.min(SCREEN_DIM_DURATION, 1327 (int)(screenOffTimeout * MAXIMUM_SCREEN_DIM_RATIO)); 1328 } 1329 1330 /** 1331 * Updates the wakefulness of the device. 1332 * 1333 * This is the function that decides whether the device should start napping 1334 * based on the current wake locks and user activity state. It may modify mDirty 1335 * if the wakefulness changes. 1336 * 1337 * Returns true if the wakefulness changed and we need to restart power state calculation. 1338 */ 1339 private boolean updateWakefulnessLocked(int dirty) { 1340 boolean changed = false; 1341 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1342 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE)) != 0) { 1343 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1344 if (DEBUG_SPEW) { 1345 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1346 } 1347 final long time = SystemClock.uptimeMillis(); 1348 if (mDreamsActivateOnSleepSetting) { 1349 changed = napNoUpdateLocked(time); 1350 } else { 1351 changed = goToSleepNoUpdateLocked(time, 1352 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1353 } 1354 } 1355 } 1356 return changed; 1357 } 1358 1359 /** 1360 * Returns true if the device should go to sleep now. 1361 * Also used when exiting a dream to determine whether we should go back 1362 * to being fully awake or else go to sleep for good. 1363 */ 1364 private boolean isItBedTimeYetLocked() { 1365 return mBootCompleted && !isBeingKeptAwakeLocked(); 1366 } 1367 1368 /** 1369 * Returns true if the device is being kept awake by a wake lock, user activity 1370 * or the stay on while powered setting. 1371 */ 1372 private boolean isBeingKeptAwakeLocked() { 1373 return mStayOn 1374 || mProximityPositive 1375 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1376 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1377 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1378 } 1379 1380 /** 1381 * Determines whether to post a message to the sandman to update the dream state. 1382 */ 1383 private void updateDreamLocked(int dirty) { 1384 if ((dirty & (DIRTY_WAKEFULNESS 1385 | DIRTY_USER_ACTIVITY 1386 | DIRTY_WAKE_LOCKS 1387 | DIRTY_BOOT_COMPLETED 1388 | DIRTY_SETTINGS 1389 | DIRTY_IS_POWERED 1390 | DIRTY_STAY_ON 1391 | DIRTY_PROXIMITY_POSITIVE 1392 | DIRTY_BATTERY_STATE)) != 0) { 1393 scheduleSandmanLocked(); 1394 } 1395 } 1396 1397 private void scheduleSandmanLocked() { 1398 if (!mSandmanScheduled) { 1399 mSandmanScheduled = true; 1400 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1401 msg.setAsynchronous(true); 1402 mHandler.sendMessage(msg); 1403 } 1404 } 1405 1406 /** 1407 * Called when the device enters or exits a napping or dreaming state. 1408 * 1409 * We do this asynchronously because we must call out of the power manager to start 1410 * the dream and we don't want to hold our lock while doing so. There is a risk that 1411 * the device will wake or go to sleep in the meantime so we have to handle that case. 1412 */ 1413 private void handleSandman() { // runs on handler thread 1414 // Handle preconditions. 1415 boolean startDreaming = false; 1416 synchronized (mLock) { 1417 mSandmanScheduled = false; 1418 boolean canDream = canDreamLocked(); 1419 if (DEBUG_SPEW) { 1420 Slog.d(TAG, "handleSandman: canDream=" + canDream 1421 + ", mWakefulness=" + wakefulnessToString(mWakefulness)); 1422 } 1423 1424 if (canDream && mWakefulness == WAKEFULNESS_NAPPING) { 1425 startDreaming = true; 1426 } 1427 } 1428 1429 // Start dreaming if needed. 1430 // We only control the dream on the handler thread, so we don't need to worry about 1431 // concurrent attempts to start or stop the dream. 1432 boolean isDreaming = false; 1433 if (mDreamManager != null) { 1434 if (startDreaming) { 1435 mDreamManager.startDream(); 1436 } 1437 isDreaming = mDreamManager.isDreaming(); 1438 } 1439 1440 // Update dream state. 1441 // We might need to stop the dream again if the preconditions changed. 1442 boolean continueDreaming = false; 1443 synchronized (mLock) { 1444 if (isDreaming && canDreamLocked()) { 1445 if (mWakefulness == WAKEFULNESS_NAPPING) { 1446 mWakefulness = WAKEFULNESS_DREAMING; 1447 mDirty |= DIRTY_WAKEFULNESS; 1448 mBatteryLevelWhenDreamStarted = mBatteryLevel; 1449 updatePowerStateLocked(); 1450 continueDreaming = true; 1451 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1452 if (!isBeingKeptAwakeLocked() 1453 && mBatteryLevel < mBatteryLevelWhenDreamStarted 1454 - DREAM_BATTERY_LEVEL_DRAIN_CUTOFF) { 1455 // If the user activity timeout expired and the battery appears 1456 // to be draining faster than it is charging then stop dreaming 1457 // and go to sleep. 1458 Slog.i(TAG, "Stopping dream because the battery appears to " 1459 + "be draining faster than it is charging. " 1460 + "Battery level when dream started: " 1461 + mBatteryLevelWhenDreamStarted + "%. " 1462 + "Battery level now: " + mBatteryLevel + "%."); 1463 } else { 1464 continueDreaming = true; 1465 } 1466 } 1467 } 1468 if (!continueDreaming) { 1469 handleDreamFinishedLocked(); 1470 } 1471 } 1472 1473 // Stop dreaming if needed. 1474 // It's possible that something else changed to make us need to start the dream again. 1475 // If so, then the power manager will have posted another message to the handler 1476 // to take care of it later. 1477 if (mDreamManager != null) { 1478 if (!continueDreaming) { 1479 mDreamManager.stopDream(); 1480 } 1481 } 1482 } 1483 1484 /** 1485 * Returns true if the device is allowed to dream in its current state 1486 * assuming that it is currently napping or dreaming. 1487 */ 1488 private boolean canDreamLocked() { 1489 return mDreamsSupportedConfig 1490 && mDreamsEnabledSetting 1491 && mDisplayPowerRequest.screenState != DisplayPowerRequest.SCREEN_STATE_OFF 1492 && mBootCompleted 1493 && (mIsPowered || isBeingKeptAwakeLocked()); 1494 } 1495 1496 /** 1497 * Called when a dream is ending to figure out what to do next. 1498 */ 1499 private void handleDreamFinishedLocked() { 1500 if (mWakefulness == WAKEFULNESS_NAPPING 1501 || mWakefulness == WAKEFULNESS_DREAMING) { 1502 if (isItBedTimeYetLocked()) { 1503 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1504 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1505 updatePowerStateLocked(); 1506 } else { 1507 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1508 updatePowerStateLocked(); 1509 } 1510 } 1511 } 1512 1513 private void handleScreenOnBlockerReleased() { 1514 synchronized (mLock) { 1515 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1516 updatePowerStateLocked(); 1517 } 1518 } 1519 1520 /** 1521 * Updates the display power state asynchronously. 1522 * When the update is finished, mDisplayReady will be set to true. The display 1523 * controller posts a message to tell us when the actual display power state 1524 * has been updated so we come back here to double-check and finish up. 1525 * 1526 * This function recalculates the display power state each time. 1527 */ 1528 private void updateDisplayPowerStateLocked(int dirty) { 1529 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1530 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1531 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1532 int newScreenState = getDesiredScreenPowerStateLocked(); 1533 if (newScreenState != mDisplayPowerRequest.screenState) { 1534 if (newScreenState == DisplayPowerRequest.SCREEN_STATE_OFF 1535 && mDisplayPowerRequest.screenState 1536 != DisplayPowerRequest.SCREEN_STATE_OFF) { 1537 mLastScreenOffEventElapsedRealTime = SystemClock.elapsedRealtime(); 1538 } 1539 1540 mDisplayPowerRequest.screenState = newScreenState; 1541 nativeSetPowerState( 1542 newScreenState != DisplayPowerRequest.SCREEN_STATE_OFF, 1543 newScreenState == DisplayPowerRequest.SCREEN_STATE_BRIGHT); 1544 } 1545 1546 int screenBrightness = mScreenBrightnessSettingDefault; 1547 float screenAutoBrightnessAdjustment = 0.0f; 1548 boolean autoBrightness = (mScreenBrightnessModeSetting == 1549 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1550 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1551 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1552 autoBrightness = false; 1553 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1554 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1555 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1556 screenBrightness = mScreenBrightnessSetting; 1557 } 1558 if (autoBrightness) { 1559 screenBrightness = mScreenBrightnessSettingDefault; 1560 if (isValidAutoBrightnessAdjustment( 1561 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1562 screenAutoBrightnessAdjustment = 1563 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1564 } else if (isValidAutoBrightnessAdjustment( 1565 mScreenAutoBrightnessAdjustmentSetting)) { 1566 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1567 } 1568 } 1569 screenBrightness = Math.max(Math.min(screenBrightness, 1570 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1571 screenAutoBrightnessAdjustment = Math.max(Math.min( 1572 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1573 mDisplayPowerRequest.screenBrightness = screenBrightness; 1574 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1575 screenAutoBrightnessAdjustment; 1576 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1577 1578 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1579 1580 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1581 1582 mDisplayReady = mDisplayPowerController.requestPowerState(mDisplayPowerRequest, 1583 mRequestWaitForNegativeProximity); 1584 mRequestWaitForNegativeProximity = false; 1585 1586 if (DEBUG_SPEW) { 1587 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1588 + ", newScreenState=" + newScreenState 1589 + ", mWakefulness=" + mWakefulness 1590 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1591 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1592 + ", mBootCompleted=" + mBootCompleted); 1593 } 1594 } 1595 } 1596 1597 private static boolean isValidBrightness(int value) { 1598 return value >= 0 && value <= 255; 1599 } 1600 1601 private static boolean isValidAutoBrightnessAdjustment(float value) { 1602 // Handles NaN by always returning false. 1603 return value >= -1.0f && value <= 1.0f; 1604 } 1605 1606 private int getDesiredScreenPowerStateLocked() { 1607 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1608 return DisplayPowerRequest.SCREEN_STATE_OFF; 1609 } 1610 1611 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1612 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1613 || !mBootCompleted) { 1614 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1615 } 1616 1617 return DisplayPowerRequest.SCREEN_STATE_DIM; 1618 } 1619 1620 private final DisplayPowerController.Callbacks mDisplayPowerControllerCallbacks = 1621 new DisplayPowerController.Callbacks() { 1622 @Override 1623 public void onStateChanged() { 1624 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1625 updatePowerStateLocked(); 1626 } 1627 1628 @Override 1629 public void onProximityPositive() { 1630 mProximityPositive = true; 1631 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1632 updatePowerStateLocked(); 1633 } 1634 1635 @Override 1636 public void onProximityNegative() { 1637 mProximityPositive = false; 1638 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1639 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1640 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1641 updatePowerStateLocked(); 1642 } 1643 }; 1644 1645 private boolean shouldUseProximitySensorLocked() { 1646 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1647 } 1648 1649 /** 1650 * Updates the suspend blocker that keeps the CPU alive. 1651 * 1652 * This function must have no other side-effects. 1653 */ 1654 private void updateSuspendBlockerLocked() { 1655 boolean wantCpu = isCpuNeededLocked(); 1656 if (wantCpu != mHoldingWakeLockSuspendBlocker) { 1657 mHoldingWakeLockSuspendBlocker = wantCpu; 1658 if (wantCpu) { 1659 if (DEBUG) { 1660 Slog.d(TAG, "updateSuspendBlockerLocked: Acquiring suspend blocker."); 1661 } 1662 mWakeLockSuspendBlocker.acquire(); 1663 } else { 1664 if (DEBUG) { 1665 Slog.d(TAG, "updateSuspendBlockerLocked: Releasing suspend blocker."); 1666 } 1667 mWakeLockSuspendBlocker.release(); 1668 } 1669 } 1670 } 1671 1672 private boolean isCpuNeededLocked() { 1673 return !mBootCompleted 1674 || mWakeLockSummary != 0 1675 || mUserActivitySummary != 0 1676 || mDisplayPowerRequest.screenState != DisplayPowerRequest.SCREEN_STATE_OFF 1677 || !mDisplayReady; 1678 } 1679 1680 @Override // Binder call 1681 public boolean isScreenOn() { 1682 final long ident = Binder.clearCallingIdentity(); 1683 try { 1684 return isScreenOnInternal(); 1685 } finally { 1686 Binder.restoreCallingIdentity(ident); 1687 } 1688 } 1689 1690 private boolean isScreenOnInternal() { 1691 synchronized (mLock) { 1692 return !mSystemReady 1693 || mDisplayPowerRequest.screenState != DisplayPowerRequest.SCREEN_STATE_OFF; 1694 } 1695 } 1696 1697 private void handleBatteryStateChangedLocked() { 1698 mDirty |= DIRTY_BATTERY_STATE; 1699 updatePowerStateLocked(); 1700 } 1701 1702 private void startWatchingForBootAnimationFinished() { 1703 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1704 } 1705 1706 private void checkIfBootAnimationFinished() { 1707 if (DEBUG) { 1708 Slog.d(TAG, "Check if boot animation finished..."); 1709 } 1710 1711 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1712 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1713 BOOT_ANIMATION_POLL_INTERVAL); 1714 return; 1715 } 1716 1717 synchronized (mLock) { 1718 if (!mBootCompleted) { 1719 Slog.i(TAG, "Boot animation finished."); 1720 handleBootCompletedLocked(); 1721 } 1722 } 1723 } 1724 1725 private void handleBootCompletedLocked() { 1726 final long now = SystemClock.uptimeMillis(); 1727 mBootCompleted = true; 1728 mDirty |= DIRTY_BOOT_COMPLETED; 1729 userActivityNoUpdateLocked( 1730 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1731 updatePowerStateLocked(); 1732 } 1733 1734 /** 1735 * Reboots the device. 1736 * 1737 * @param confirm If true, shows a reboot confirmation dialog. 1738 * @param reason The reason for the reboot, or null if none. 1739 * @param wait If true, this call waits for the reboot to complete and does not return. 1740 */ 1741 @Override // Binder call 1742 public void reboot(boolean confirm, String reason, boolean wait) { 1743 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 1744 1745 final long ident = Binder.clearCallingIdentity(); 1746 try { 1747 shutdownOrRebootInternal(false, confirm, reason, wait); 1748 } finally { 1749 Binder.restoreCallingIdentity(ident); 1750 } 1751 } 1752 1753 /** 1754 * Shuts down the device. 1755 * 1756 * @param confirm If true, shows a shutdown confirmation dialog. 1757 * @param wait If true, this call waits for the shutdown to complete and does not return. 1758 */ 1759 @Override // Binder call 1760 public void shutdown(boolean confirm, boolean wait) { 1761 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 1762 1763 final long ident = Binder.clearCallingIdentity(); 1764 try { 1765 shutdownOrRebootInternal(true, confirm, null, wait); 1766 } finally { 1767 Binder.restoreCallingIdentity(ident); 1768 } 1769 } 1770 1771 private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm, 1772 final String reason, boolean wait) { 1773 if (mHandler == null || !mSystemReady) { 1774 throw new IllegalStateException("Too early to call shutdown() or reboot()"); 1775 } 1776 1777 Runnable runnable = new Runnable() { 1778 @Override 1779 public void run() { 1780 synchronized (this) { 1781 if (shutdown) { 1782 ShutdownThread.shutdown(mContext, confirm); 1783 } else { 1784 ShutdownThread.reboot(mContext, reason, confirm); 1785 } 1786 } 1787 } 1788 }; 1789 1790 // ShutdownThread must run on a looper capable of displaying the UI. 1791 Message msg = Message.obtain(mHandler, runnable); 1792 msg.setAsynchronous(true); 1793 mHandler.sendMessage(msg); 1794 1795 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 1796 if (wait) { 1797 synchronized (runnable) { 1798 while (true) { 1799 try { 1800 runnable.wait(); 1801 } catch (InterruptedException e) { 1802 } 1803 } 1804 } 1805 } 1806 } 1807 1808 /** 1809 * Crash the runtime (causing a complete restart of the Android framework). 1810 * Requires REBOOT permission. Mostly for testing. Should not return. 1811 */ 1812 @Override // Binder call 1813 public void crash(String message) { 1814 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 1815 1816 final long ident = Binder.clearCallingIdentity(); 1817 try { 1818 crashInternal(message); 1819 } finally { 1820 Binder.restoreCallingIdentity(ident); 1821 } 1822 } 1823 1824 private void crashInternal(final String message) { 1825 Thread t = new Thread("PowerManagerService.crash()") { 1826 @Override 1827 public void run() { 1828 throw new RuntimeException(message); 1829 } 1830 }; 1831 try { 1832 t.start(); 1833 t.join(); 1834 } catch (InterruptedException e) { 1835 Log.wtf(TAG, e); 1836 } 1837 } 1838 1839 /** 1840 * Set the setting that determines whether the device stays on when plugged in. 1841 * The argument is a bit string, with each bit specifying a power source that, 1842 * when the device is connected to that source, causes the device to stay on. 1843 * See {@link android.os.BatteryManager} for the list of power sources that 1844 * can be specified. Current values include {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 1845 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 1846 * 1847 * Used by "adb shell svc power stayon ..." 1848 * 1849 * @param val an {@code int} containing the bits that specify which power sources 1850 * should cause the device to stay on. 1851 */ 1852 @Override // Binder call 1853 public void setStayOnSetting(int val) { 1854 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WRITE_SETTINGS, null); 1855 1856 final long ident = Binder.clearCallingIdentity(); 1857 try { 1858 setStayOnSettingInternal(val); 1859 } finally { 1860 Binder.restoreCallingIdentity(ident); 1861 } 1862 } 1863 1864 private void setStayOnSettingInternal(int val) { 1865 Settings.Global.putInt(mContext.getContentResolver(), 1866 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 1867 } 1868 1869 /** 1870 * Used by device administration to set the maximum screen off timeout. 1871 * 1872 * This method must only be called by the device administration policy manager. 1873 */ 1874 @Override // Binder call 1875 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 1876 final long ident = Binder.clearCallingIdentity(); 1877 try { 1878 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 1879 } finally { 1880 Binder.restoreCallingIdentity(ident); 1881 } 1882 } 1883 1884 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 1885 synchronized (mLock) { 1886 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 1887 mDirty |= DIRTY_SETTINGS; 1888 updatePowerStateLocked(); 1889 } 1890 } 1891 1892 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 1893 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 1894 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 1895 } 1896 1897 /** 1898 * Used by the phone application to make the attention LED flash when ringing. 1899 */ 1900 @Override // Binder call 1901 public void setAttentionLight(boolean on, int color) { 1902 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 1903 1904 final long ident = Binder.clearCallingIdentity(); 1905 try { 1906 setAttentionLightInternal(on, color); 1907 } finally { 1908 Binder.restoreCallingIdentity(ident); 1909 } 1910 } 1911 1912 private void setAttentionLightInternal(boolean on, int color) { 1913 LightsService.Light light; 1914 synchronized (mLock) { 1915 if (!mSystemReady) { 1916 return; 1917 } 1918 light = mAttentionLight; 1919 } 1920 1921 // Control light outside of lock. 1922 light.setFlashing(color, LightsService.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 1923 } 1924 1925 /** 1926 * Used by the Watchdog. 1927 */ 1928 public long timeSinceScreenWasLastOn() { 1929 synchronized (mLock) { 1930 if (mDisplayPowerRequest.screenState != DisplayPowerRequest.SCREEN_STATE_OFF) { 1931 return 0; 1932 } 1933 return SystemClock.elapsedRealtime() - mLastScreenOffEventElapsedRealTime; 1934 } 1935 } 1936 1937 /** 1938 * Used by the window manager to override the screen brightness based on the 1939 * current foreground activity. 1940 * 1941 * This method must only be called by the window manager. 1942 * 1943 * @param brightness The overridden brightness, or -1 to disable the override. 1944 */ 1945 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 1946 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 1947 1948 final long ident = Binder.clearCallingIdentity(); 1949 try { 1950 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 1951 } finally { 1952 Binder.restoreCallingIdentity(ident); 1953 } 1954 } 1955 1956 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 1957 synchronized (mLock) { 1958 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 1959 mScreenBrightnessOverrideFromWindowManager = brightness; 1960 mDirty |= DIRTY_SETTINGS; 1961 updatePowerStateLocked(); 1962 } 1963 } 1964 } 1965 1966 /** 1967 * Used by the window manager to override the button brightness based on the 1968 * current foreground activity. 1969 * 1970 * This method must only be called by the window manager. 1971 * 1972 * @param brightness The overridden brightness, or -1 to disable the override. 1973 */ 1974 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 1975 // Do nothing. 1976 // Button lights are not currently supported in the new implementation. 1977 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 1978 } 1979 1980 /** 1981 * Used by the window manager to override the user activity timeout based on the 1982 * current foreground activity. It can only be used to make the timeout shorter 1983 * than usual, not longer. 1984 * 1985 * This method must only be called by the window manager. 1986 * 1987 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 1988 */ 1989 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 1990 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 1991 1992 final long ident = Binder.clearCallingIdentity(); 1993 try { 1994 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 1995 } finally { 1996 Binder.restoreCallingIdentity(ident); 1997 } 1998 } 1999 2000 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 2001 synchronized (mLock) { 2002 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 2003 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 2004 mDirty |= DIRTY_SETTINGS; 2005 updatePowerStateLocked(); 2006 } 2007 } 2008 } 2009 2010 /** 2011 * Used by the settings application and brightness control widgets to 2012 * temporarily override the current screen brightness setting so that the 2013 * user can observe the effect of an intended settings change without applying 2014 * it immediately. 2015 * 2016 * The override will be canceled when the setting value is next updated. 2017 * 2018 * @param brightness The overridden brightness. 2019 * 2020 * @see Settings.System#SCREEN_BRIGHTNESS 2021 */ 2022 @Override // Binder call 2023 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 2024 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2025 2026 final long ident = Binder.clearCallingIdentity(); 2027 try { 2028 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 2029 } finally { 2030 Binder.restoreCallingIdentity(ident); 2031 } 2032 } 2033 2034 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2035 synchronized (mLock) { 2036 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2037 mTemporaryScreenBrightnessSettingOverride = brightness; 2038 mDirty |= DIRTY_SETTINGS; 2039 updatePowerStateLocked(); 2040 } 2041 } 2042 } 2043 2044 /** 2045 * Used by the settings application and brightness control widgets to 2046 * temporarily override the current screen auto-brightness adjustment setting so that the 2047 * user can observe the effect of an intended settings change without applying 2048 * it immediately. 2049 * 2050 * The override will be canceled when the setting value is next updated. 2051 * 2052 * @param adj The overridden brightness, or Float.NaN to disable the override. 2053 * 2054 * @see Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2055 */ 2056 @Override // Binder call 2057 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2058 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2059 2060 final long ident = Binder.clearCallingIdentity(); 2061 try { 2062 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2063 } finally { 2064 Binder.restoreCallingIdentity(ident); 2065 } 2066 } 2067 2068 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2069 synchronized (mLock) { 2070 // Note: This condition handles NaN because NaN is not equal to any other 2071 // value, including itself. 2072 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2073 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2074 mDirty |= DIRTY_SETTINGS; 2075 updatePowerStateLocked(); 2076 } 2077 } 2078 } 2079 2080 /** 2081 * Low-level function turn the device off immediately, without trying 2082 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2083 */ 2084 public static void lowLevelShutdown() { 2085 nativeShutdown(); 2086 } 2087 2088 /** 2089 * Low-level function to reboot the device. 2090 * 2091 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2092 * @throws IOException if reboot fails for some reason (eg, lack of 2093 * permission) 2094 */ 2095 public static void lowLevelReboot(String reason) throws IOException { 2096 nativeReboot(reason); 2097 } 2098 2099 @Override // Watchdog.Monitor implementation 2100 public void monitor() { 2101 // Grab and release lock for watchdog monitor to detect deadlocks. 2102 synchronized (mLock) { 2103 } 2104 } 2105 2106 @Override // Binder call 2107 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2108 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2109 != PackageManager.PERMISSION_GRANTED) { 2110 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2111 + Binder.getCallingPid() 2112 + ", uid=" + Binder.getCallingUid()); 2113 return; 2114 } 2115 2116 pw.println("POWER MANAGER (dumpsys power)\n"); 2117 2118 final DisplayPowerController dpc; 2119 synchronized (mLock) { 2120 pw.println("Power Manager State:"); 2121 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2122 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2123 pw.println(" mIsPowered=" + mIsPowered); 2124 pw.println(" mPlugType=" + mPlugType); 2125 pw.println(" mBatteryLevel=" + mBatteryLevel); 2126 pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted); 2127 pw.println(" mStayOn=" + mStayOn); 2128 pw.println(" mProximityPositive=" + mProximityPositive); 2129 pw.println(" mBootCompleted=" + mBootCompleted); 2130 pw.println(" mSystemReady=" + mSystemReady); 2131 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2132 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2133 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2134 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2135 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2136 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2137 pw.println(" mSendWakeUpFinishedNotificationWhenReady=" 2138 + mSendWakeUpFinishedNotificationWhenReady); 2139 pw.println(" mSendGoToSleepFinishedNotificationWhenReady=" 2140 + mSendGoToSleepFinishedNotificationWhenReady); 2141 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2142 pw.println(" mLastUserActivityTimeNoChangeLights=" 2143 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2144 pw.println(" mDisplayReady=" + mDisplayReady); 2145 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2146 2147 pw.println(); 2148 pw.println("Settings and Configuration:"); 2149 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2150 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2151 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2152 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2153 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2154 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2155 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2156 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2157 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2158 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2159 + mScreenAutoBrightnessAdjustmentSetting); 2160 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2161 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2162 + mScreenBrightnessOverrideFromWindowManager); 2163 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2164 + mUserActivityTimeoutOverrideFromWindowManager); 2165 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2166 + mTemporaryScreenBrightnessSettingOverride); 2167 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2168 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2169 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2170 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2171 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2172 2173 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2174 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2175 pw.println(); 2176 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2177 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2178 2179 pw.println(); 2180 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2181 for (WakeLock wl : mWakeLocks) { 2182 pw.println(" " + wl); 2183 } 2184 2185 pw.println(); 2186 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2187 for (SuspendBlocker sb : mSuspendBlockers) { 2188 pw.println(" " + sb); 2189 } 2190 2191 pw.println(); 2192 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2193 2194 pw.println(); 2195 pw.println("Display Blanker: " + mDisplayBlanker); 2196 2197 dpc = mDisplayPowerController; 2198 } 2199 2200 if (dpc != null) { 2201 dpc.dump(pw); 2202 } 2203 } 2204 2205 private SuspendBlocker createSuspendBlockerLocked(String name) { 2206 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2207 mSuspendBlockers.add(suspendBlocker); 2208 return suspendBlocker; 2209 } 2210 2211 private static String wakefulnessToString(int wakefulness) { 2212 switch (wakefulness) { 2213 case WAKEFULNESS_ASLEEP: 2214 return "Asleep"; 2215 case WAKEFULNESS_AWAKE: 2216 return "Awake"; 2217 case WAKEFULNESS_DREAMING: 2218 return "Dreaming"; 2219 case WAKEFULNESS_NAPPING: 2220 return "Napping"; 2221 default: 2222 return Integer.toString(wakefulness); 2223 } 2224 } 2225 2226 private static WorkSource copyWorkSource(WorkSource workSource) { 2227 return workSource != null ? new WorkSource(workSource) : null; 2228 } 2229 2230 private final class BatteryReceiver extends BroadcastReceiver { 2231 @Override 2232 public void onReceive(Context context, Intent intent) { 2233 synchronized (mLock) { 2234 handleBatteryStateChangedLocked(); 2235 } 2236 } 2237 } 2238 2239 private final class BootCompletedReceiver extends BroadcastReceiver { 2240 @Override 2241 public void onReceive(Context context, Intent intent) { 2242 // This is our early signal that the system thinks it has finished booting. 2243 // However, the boot animation may still be running for a few more seconds 2244 // since it is ultimately in charge of when it terminates. 2245 // Defer transitioning into the boot completed state until the animation exits. 2246 // We do this so that the screen does not start to dim prematurely before 2247 // the user has actually had a chance to interact with the device. 2248 startWatchingForBootAnimationFinished(); 2249 } 2250 } 2251 2252 private final class DreamReceiver extends BroadcastReceiver { 2253 @Override 2254 public void onReceive(Context context, Intent intent) { 2255 synchronized (mLock) { 2256 scheduleSandmanLocked(); 2257 } 2258 } 2259 } 2260 2261 private final class UserSwitchedReceiver extends BroadcastReceiver { 2262 @Override 2263 public void onReceive(Context context, Intent intent) { 2264 synchronized (mLock) { 2265 handleSettingsChangedLocked(); 2266 } 2267 } 2268 } 2269 2270 private final class SettingsObserver extends ContentObserver { 2271 public SettingsObserver(Handler handler) { 2272 super(handler); 2273 } 2274 2275 @Override 2276 public void onChange(boolean selfChange, Uri uri) { 2277 synchronized (mLock) { 2278 handleSettingsChangedLocked(); 2279 } 2280 } 2281 } 2282 2283 /** 2284 * Handler for asynchronous operations performed by the power manager. 2285 */ 2286 private final class PowerManagerHandler extends Handler { 2287 public PowerManagerHandler(Looper looper) { 2288 super(looper, null, true /*async*/); 2289 } 2290 2291 @Override 2292 public void handleMessage(Message msg) { 2293 switch (msg.what) { 2294 case MSG_USER_ACTIVITY_TIMEOUT: 2295 handleUserActivityTimeout(); 2296 break; 2297 case MSG_SANDMAN: 2298 handleSandman(); 2299 break; 2300 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2301 handleScreenOnBlockerReleased(); 2302 break; 2303 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2304 checkIfBootAnimationFinished(); 2305 break; 2306 } 2307 } 2308 } 2309 2310 /** 2311 * Represents a wake lock that has been acquired by an application. 2312 */ 2313 private final class WakeLock implements IBinder.DeathRecipient { 2314 public final IBinder mLock; 2315 public int mFlags; 2316 public String mTag; 2317 public WorkSource mWorkSource; 2318 public int mOwnerUid; 2319 public int mOwnerPid; 2320 2321 public WakeLock(IBinder lock, int flags, String tag, WorkSource workSource, 2322 int ownerUid, int ownerPid) { 2323 mLock = lock; 2324 mFlags = flags; 2325 mTag = tag; 2326 mWorkSource = copyWorkSource(workSource); 2327 mOwnerUid = ownerUid; 2328 mOwnerPid = ownerPid; 2329 } 2330 2331 @Override 2332 public void binderDied() { 2333 PowerManagerService.this.handleWakeLockDeath(this); 2334 } 2335 2336 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2337 int ownerUid, int ownerPid) { 2338 return mFlags == flags 2339 && mTag.equals(tag) 2340 && hasSameWorkSource(workSource) 2341 && mOwnerUid == ownerUid 2342 && mOwnerPid == ownerPid; 2343 } 2344 2345 public void updateProperties(int flags, String tag, WorkSource workSource, 2346 int ownerUid, int ownerPid) { 2347 mFlags = flags; 2348 mTag = tag; 2349 updateWorkSource(workSource); 2350 mOwnerUid = ownerUid; 2351 mOwnerPid = ownerPid; 2352 } 2353 2354 public boolean hasSameWorkSource(WorkSource workSource) { 2355 return Objects.equal(mWorkSource, workSource); 2356 } 2357 2358 public void updateWorkSource(WorkSource workSource) { 2359 mWorkSource = copyWorkSource(workSource); 2360 } 2361 2362 @Override 2363 public String toString() { 2364 return getLockLevelString() 2365 + " '" + mTag + "'" + getLockFlagsString() 2366 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2367 } 2368 2369 private String getLockLevelString() { 2370 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2371 case PowerManager.FULL_WAKE_LOCK: 2372 return "FULL_WAKE_LOCK "; 2373 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2374 return "SCREEN_BRIGHT_WAKE_LOCK "; 2375 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2376 return "SCREEN_DIM_WAKE_LOCK "; 2377 case PowerManager.PARTIAL_WAKE_LOCK: 2378 return "PARTIAL_WAKE_LOCK "; 2379 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2380 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2381 default: 2382 return "??? "; 2383 } 2384 } 2385 2386 private String getLockFlagsString() { 2387 String result = ""; 2388 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2389 result += " ACQUIRE_CAUSES_WAKEUP"; 2390 } 2391 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2392 result += " ON_AFTER_RELEASE"; 2393 } 2394 return result; 2395 } 2396 } 2397 2398 private final class SuspendBlockerImpl implements SuspendBlocker { 2399 private final String mName; 2400 private int mReferenceCount; 2401 2402 public SuspendBlockerImpl(String name) { 2403 mName = name; 2404 } 2405 2406 @Override 2407 protected void finalize() throws Throwable { 2408 try { 2409 if (mReferenceCount != 0) { 2410 Log.wtf(TAG, "Suspend blocker \"" + mName 2411 + "\" was finalized without being released!"); 2412 mReferenceCount = 0; 2413 nativeReleaseSuspendBlocker(mName); 2414 } 2415 } finally { 2416 super.finalize(); 2417 } 2418 } 2419 2420 @Override 2421 public void acquire() { 2422 synchronized (this) { 2423 mReferenceCount += 1; 2424 if (mReferenceCount == 1) { 2425 nativeAcquireSuspendBlocker(mName); 2426 } 2427 } 2428 } 2429 2430 @Override 2431 public void release() { 2432 synchronized (this) { 2433 mReferenceCount -= 1; 2434 if (mReferenceCount == 0) { 2435 nativeReleaseSuspendBlocker(mName); 2436 } else if (mReferenceCount < 0) { 2437 Log.wtf(TAG, "Suspend blocker \"" + mName 2438 + "\" was released without being acquired!", new Throwable()); 2439 mReferenceCount = 0; 2440 } 2441 } 2442 } 2443 2444 @Override 2445 public String toString() { 2446 synchronized (this) { 2447 return mName + ": ref count=" + mReferenceCount; 2448 } 2449 } 2450 } 2451 2452 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2453 private int mNestCount; 2454 2455 public boolean isHeld() { 2456 synchronized (this) { 2457 return mNestCount != 0; 2458 } 2459 } 2460 2461 @Override 2462 public void acquire() { 2463 synchronized (this) { 2464 mNestCount += 1; 2465 if (DEBUG) { 2466 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2467 } 2468 } 2469 } 2470 2471 @Override 2472 public void release() { 2473 synchronized (this) { 2474 mNestCount -= 1; 2475 if (mNestCount < 0) { 2476 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2477 new Throwable()); 2478 mNestCount = 0; 2479 } 2480 if (mNestCount == 0) { 2481 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2482 } 2483 if (DEBUG) { 2484 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2485 } 2486 } 2487 } 2488 2489 @Override 2490 public String toString() { 2491 synchronized (this) { 2492 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2493 } 2494 } 2495 } 2496 2497 private final class DisplayBlankerImpl implements DisplayBlanker { 2498 private boolean mBlanked; 2499 2500 @Override 2501 public void blankAllDisplays() { 2502 synchronized (this) { 2503 mBlanked = true; 2504 mDisplayManagerService.blankAllDisplaysFromPowerManager(); 2505 nativeSetInteractive(false); 2506 nativeSetAutoSuspend(true); 2507 } 2508 } 2509 2510 @Override 2511 public void unblankAllDisplays() { 2512 synchronized (this) { 2513 nativeSetAutoSuspend(false); 2514 nativeSetInteractive(true); 2515 mDisplayManagerService.unblankAllDisplaysFromPowerManager(); 2516 mBlanked = false; 2517 } 2518 } 2519 2520 @Override 2521 public String toString() { 2522 synchronized (this) { 2523 return "blanked=" + mBlanked; 2524 } 2525 } 2526 } 2527} 2528