PowerManagerService.java revision 20767b2d1ea7af5539e6d3be5e70ce245da34b42
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 private Context mContext; 166 private LightsService mLightsService; 167 private BatteryService mBatteryService; 168 private DisplayManagerService mDisplayManagerService; 169 private IBatteryStats mBatteryStats; 170 private HandlerThread mHandlerThread; 171 private PowerManagerHandler mHandler; 172 private WindowManagerPolicy mPolicy; 173 private Notifier mNotifier; 174 private DisplayPowerController mDisplayPowerController; 175 private SettingsObserver mSettingsObserver; 176 private DreamManagerService mDreamManager; 177 private LightsService.Light mAttentionLight; 178 179 private final Object mLock = new Object(); 180 181 // A bitfield that indicates what parts of the power state have 182 // changed and need to be recalculated. 183 private int mDirty; 184 185 // Indicates whether the device is awake or asleep or somewhere in between. 186 // This is distinct from the screen power state, which is managed separately. 187 private int mWakefulness; 188 189 // True if MSG_SANDMAN has been scheduled. 190 private boolean mSandmanScheduled; 191 192 // Table of all suspend blockers. 193 // There should only be a few of these. 194 private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>(); 195 196 // Table of all wake locks acquired by applications. 197 private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>(); 198 199 // A bitfield that summarizes the state of all active wakelocks. 200 private int mWakeLockSummary; 201 202 // If true, instructs the display controller to wait for the proximity sensor to 203 // go negative before turning the screen on. 204 private boolean mRequestWaitForNegativeProximity; 205 206 // Timestamp of the last time the device was awoken or put to sleep. 207 private long mLastWakeTime; 208 private long mLastSleepTime; 209 210 // True if we need to send a wake up or go to sleep finished notification 211 // when the display is ready. 212 private boolean mSendWakeUpFinishedNotificationWhenReady; 213 private boolean mSendGoToSleepFinishedNotificationWhenReady; 214 215 // Timestamp of the last call to user activity. 216 private long mLastUserActivityTime; 217 private long mLastUserActivityTimeNoChangeLights; 218 219 // A bitfield that summarizes the effect of the user activity timer. 220 // A zero value indicates that the user activity timer has expired. 221 private int mUserActivitySummary; 222 223 // The desired display power state. The actual state may lag behind the 224 // requested because it is updated asynchronously by the display power controller. 225 private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest(); 226 227 // The time the screen was last turned off, in elapsedRealtime() timebase. 228 private long mLastScreenOffEventElapsedRealTime; 229 230 // True if the display power state has been fully applied, which means the display 231 // is actually on or actually off or whatever was requested. 232 private boolean mDisplayReady; 233 234 // True if holding a wake-lock to block suspend of the CPU. 235 private boolean mHoldingWakeLockSuspendBlocker; 236 237 // The suspend blocker used to keep the CPU alive when wake locks have been acquired. 238 private final SuspendBlocker mWakeLockSuspendBlocker; 239 240 // The screen on blocker used to keep the screen from turning on while the lock 241 // screen is coming up. 242 private final ScreenOnBlockerImpl mScreenOnBlocker; 243 244 // The display blanker used to turn the screen on or off. 245 private final DisplayBlankerImpl mDisplayBlanker; 246 247 // True if systemReady() has been called. 248 private boolean mSystemReady; 249 250 // True if boot completed occurred. We keep the screen on until this happens. 251 private boolean mBootCompleted; 252 253 // True if the device is plugged into a power source. 254 private boolean mIsPowered; 255 256 // The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS. 257 private int mPlugType; 258 259 // True if the device should wake up when plugged or unplugged. 260 private boolean mWakeUpWhenPluggedOrUnpluggedConfig; 261 262 // True if dreams are supported on this device. 263 private boolean mDreamsSupportedConfig; 264 265 // True if dreams are enabled by the user. 266 private boolean mDreamsEnabledSetting; 267 268 // True if dreams should be activated on sleep. 269 private boolean mDreamsActivateOnSleepSetting; 270 271 // The screen off timeout setting value in milliseconds. 272 private int mScreenOffTimeoutSetting; 273 274 // The maximum allowable screen off timeout according to the device 275 // administration policy. Overrides other settings. 276 private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE; 277 278 // The stay on while plugged in setting. 279 // A bitfield of battery conditions under which to make the screen stay on. 280 private int mStayOnWhilePluggedInSetting; 281 282 // True if the device should stay on. 283 private boolean mStayOn; 284 285 // True if the proximity sensor reads a positive result. 286 private boolean mProximityPositive; 287 288 // Screen brightness setting limits. 289 private int mScreenBrightnessSettingMinimum; 290 private int mScreenBrightnessSettingMaximum; 291 private int mScreenBrightnessSettingDefault; 292 293 // The screen brightness setting, from 0 to 255. 294 // Use -1 if no value has been set. 295 private int mScreenBrightnessSetting; 296 297 // The screen auto-brightness adjustment setting, from -1 to 1. 298 // Use 0 if there is no adjustment. 299 private float mScreenAutoBrightnessAdjustmentSetting; 300 301 // The screen brightness mode. 302 // One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants. 303 private int mScreenBrightnessModeSetting; 304 305 // The screen brightness setting override from the window manager 306 // to allow the current foreground activity to override the brightness. 307 // Use -1 to disable. 308 private int mScreenBrightnessOverrideFromWindowManager = -1; 309 310 // The user activity timeout override from the window manager 311 // to allow the current foreground activity to override the user activity timeout. 312 // Use -1 to disable. 313 private long mUserActivityTimeoutOverrideFromWindowManager = -1; 314 315 // The screen brightness setting override from the settings application 316 // to temporarily adjust the brightness until next updated, 317 // Use -1 to disable. 318 private int mTemporaryScreenBrightnessSettingOverride = -1; 319 320 // The screen brightness adjustment setting override from the settings 321 // application to temporarily adjust the auto-brightness adjustment factor 322 // until next updated, in the range -1..1. 323 // Use NaN to disable. 324 private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 325 326 // Time when we last logged a warning about calling userActivity() without permission. 327 private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE; 328 329 private native void nativeInit(); 330 private static native void nativeShutdown(); 331 private static native void nativeReboot(String reason) throws IOException; 332 333 private static native void nativeSetPowerState(boolean screenOn, boolean screenBright); 334 private static native void nativeAcquireSuspendBlocker(String name); 335 private static native void nativeReleaseSuspendBlocker(String name); 336 private static native void nativeSetInteractive(boolean enable); 337 private static native void nativeSetAutoSuspend(boolean enable); 338 339 public PowerManagerService() { 340 synchronized (mLock) { 341 mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService"); 342 mWakeLockSuspendBlocker.acquire(); 343 mScreenOnBlocker = new ScreenOnBlockerImpl(); 344 mDisplayBlanker = new DisplayBlankerImpl(); 345 mHoldingWakeLockSuspendBlocker = true; 346 mWakefulness = WAKEFULNESS_AWAKE; 347 } 348 349 nativeInit(); 350 nativeSetPowerState(true, true); 351 } 352 353 /** 354 * Initialize the power manager. 355 * Must be called before any other functions within the power manager are called. 356 */ 357 public void init(Context context, LightsService ls, 358 ActivityManagerService am, BatteryService bs, IBatteryStats bss, 359 DisplayManagerService dm) { 360 mContext = context; 361 mLightsService = ls; 362 mBatteryService = bs; 363 mBatteryStats = bss; 364 mDisplayManagerService = dm; 365 mHandlerThread = new HandlerThread(TAG); 366 mHandlerThread.start(); 367 mHandler = new PowerManagerHandler(mHandlerThread.getLooper()); 368 369 Watchdog.getInstance().addMonitor(this); 370 371 // Forcibly turn the screen on at boot so that it is in a known power state. 372 // We do this in init() rather than in the constructor because setting the 373 // screen state requires a call into surface flinger which then needs to call back 374 // into the activity manager to check permissions. Unfortunately the 375 // activity manager is not running when the constructor is called, so we 376 // have to defer setting the screen state until this point. 377 mDisplayBlanker.unblankAllDisplays(); 378 } 379 380 public void setPolicy(WindowManagerPolicy policy) { 381 synchronized (mLock) { 382 mPolicy = policy; 383 } 384 } 385 386 public void systemReady(TwilightService twilight, DreamManagerService dreamManager) { 387 synchronized (mLock) { 388 mSystemReady = true; 389 mDreamManager = dreamManager; 390 391 PowerManager pm = (PowerManager)mContext.getSystemService(Context.POWER_SERVICE); 392 mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting(); 393 mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting(); 394 mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting(); 395 396 // The notifier runs on the system server's main looper so as not to interfere 397 // with the animations and other critical functions of the power manager. 398 mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats, 399 createSuspendBlockerLocked("PowerManagerService.Broadcasts"), 400 mScreenOnBlocker, mPolicy); 401 402 // The display power controller runs on the power manager service's 403 // own handler thread. 404 mDisplayPowerController = new DisplayPowerController(mHandler.getLooper(), 405 mContext, mNotifier, mLightsService, twilight, 406 createSuspendBlockerLocked("PowerManagerService.Display"), 407 mDisplayBlanker, mDisplayPowerControllerCallbacks, mHandler); 408 409 mSettingsObserver = new SettingsObserver(mHandler); 410 mAttentionLight = mLightsService.getLight(LightsService.LIGHT_ID_ATTENTION); 411 412 // Register for broadcasts from other components of the system. 413 IntentFilter filter = new IntentFilter(); 414 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 415 mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler); 416 417 filter = new IntentFilter(); 418 filter.addAction(Intent.ACTION_BOOT_COMPLETED); 419 mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler); 420 421 filter = new IntentFilter(); 422 filter.addAction(Intent.ACTION_DREAMING_STARTED); 423 filter.addAction(Intent.ACTION_DREAMING_STOPPED); 424 mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler); 425 426 filter = new IntentFilter(); 427 filter.addAction(Intent.ACTION_USER_SWITCHED); 428 mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler); 429 430 // Register for settings changes. 431 final ContentResolver resolver = mContext.getContentResolver(); 432 resolver.registerContentObserver(Settings.Secure.getUriFor( 433 Settings.Secure.SCREENSAVER_ENABLED), 434 false, mSettingsObserver, UserHandle.USER_ALL); 435 resolver.registerContentObserver(Settings.Secure.getUriFor( 436 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP), 437 false, mSettingsObserver, UserHandle.USER_ALL); 438 resolver.registerContentObserver(Settings.System.getUriFor( 439 Settings.System.SCREEN_OFF_TIMEOUT), 440 false, mSettingsObserver, UserHandle.USER_ALL); 441 resolver.registerContentObserver(Settings.Global.getUriFor( 442 Settings.Global.STAY_ON_WHILE_PLUGGED_IN), 443 false, mSettingsObserver, UserHandle.USER_ALL); 444 resolver.registerContentObserver(Settings.System.getUriFor( 445 Settings.System.SCREEN_BRIGHTNESS), 446 false, mSettingsObserver, UserHandle.USER_ALL); 447 resolver.registerContentObserver(Settings.System.getUriFor( 448 Settings.System.SCREEN_BRIGHTNESS_MODE), 449 false, mSettingsObserver, UserHandle.USER_ALL); 450 451 // Go. 452 readConfigurationLocked(); 453 updateSettingsLocked(); 454 mDirty |= DIRTY_BATTERY_STATE; 455 updatePowerStateLocked(); 456 } 457 } 458 459 private void readConfigurationLocked() { 460 final Resources resources = mContext.getResources(); 461 462 mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean( 463 com.android.internal.R.bool.config_unplugTurnsOnScreen); 464 mDreamsSupportedConfig = resources.getBoolean( 465 com.android.internal.R.bool.config_enableDreams); 466 } 467 468 private void updateSettingsLocked() { 469 final ContentResolver resolver = mContext.getContentResolver(); 470 471 mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver, 472 Settings.Secure.SCREENSAVER_ENABLED, 0, 473 UserHandle.USER_CURRENT) != 0); 474 mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver, 475 Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP, 0, 476 UserHandle.USER_CURRENT) != 0); 477 mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver, 478 Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT, 479 UserHandle.USER_CURRENT); 480 mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver, 481 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC); 482 483 final int oldScreenBrightnessSetting = mScreenBrightnessSetting; 484 mScreenBrightnessSetting = Settings.System.getIntForUser(resolver, 485 Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault, 486 UserHandle.USER_CURRENT); 487 if (oldScreenBrightnessSetting != mScreenBrightnessSetting) { 488 mTemporaryScreenBrightnessSettingOverride = -1; 489 } 490 491 final float oldScreenAutoBrightnessAdjustmentSetting = 492 mScreenAutoBrightnessAdjustmentSetting; 493 mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver, 494 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f, 495 UserHandle.USER_CURRENT); 496 if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) { 497 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN; 498 } 499 500 mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver, 501 Settings.System.SCREEN_BRIGHTNESS_MODE, 502 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT); 503 504 mDirty |= DIRTY_SETTINGS; 505 } 506 507 private void handleSettingsChangedLocked() { 508 updateSettingsLocked(); 509 updatePowerStateLocked(); 510 } 511 512 @Override // Binder call 513 public void acquireWakeLock(IBinder lock, int flags, String tag, WorkSource ws) { 514 if (lock == null) { 515 throw new IllegalArgumentException("lock must not be null"); 516 } 517 PowerManager.validateWakeLockParameters(flags, tag); 518 519 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 520 if (ws != null && ws.size() != 0) { 521 mContext.enforceCallingOrSelfPermission( 522 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 523 } else { 524 ws = null; 525 } 526 527 final int uid = Binder.getCallingUid(); 528 final int pid = Binder.getCallingPid(); 529 final long ident = Binder.clearCallingIdentity(); 530 try { 531 acquireWakeLockInternal(lock, flags, tag, ws, uid, pid); 532 } finally { 533 Binder.restoreCallingIdentity(ident); 534 } 535 } 536 537 private void acquireWakeLockInternal(IBinder lock, int flags, String tag, WorkSource ws, 538 int uid, int pid) { 539 synchronized (mLock) { 540 if (DEBUG_SPEW) { 541 Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock) 542 + ", flags=0x" + Integer.toHexString(flags) 543 + ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid); 544 } 545 546 WakeLock wakeLock; 547 int index = findWakeLockIndexLocked(lock); 548 if (index >= 0) { 549 wakeLock = mWakeLocks.get(index); 550 if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) { 551 // Update existing wake lock. This shouldn't happen but is harmless. 552 notifyWakeLockReleasedLocked(wakeLock); 553 wakeLock.updateProperties(flags, tag, ws, uid, pid); 554 notifyWakeLockAcquiredLocked(wakeLock); 555 } 556 } else { 557 wakeLock = new WakeLock(lock, flags, tag, ws, uid, pid); 558 try { 559 lock.linkToDeath(wakeLock, 0); 560 } catch (RemoteException ex) { 561 throw new IllegalArgumentException("Wake lock is already dead."); 562 } 563 notifyWakeLockAcquiredLocked(wakeLock); 564 mWakeLocks.add(wakeLock); 565 } 566 567 applyWakeLockFlagsOnAcquireLocked(wakeLock); 568 mDirty |= DIRTY_WAKE_LOCKS; 569 updatePowerStateLocked(); 570 } 571 } 572 573 private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) { 574 if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 575 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 576 } 577 } 578 579 @Override // Binder call 580 public void releaseWakeLock(IBinder lock, int flags) { 581 if (lock == null) { 582 throw new IllegalArgumentException("lock must not be null"); 583 } 584 585 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 586 587 final long ident = Binder.clearCallingIdentity(); 588 try { 589 releaseWakeLockInternal(lock, flags); 590 } finally { 591 Binder.restoreCallingIdentity(ident); 592 } 593 } 594 595 private void releaseWakeLockInternal(IBinder lock, int flags) { 596 synchronized (mLock) { 597 if (DEBUG_SPEW) { 598 Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock) 599 + ", flags=0x" + Integer.toHexString(flags)); 600 } 601 602 int index = findWakeLockIndexLocked(lock); 603 if (index < 0) { 604 return; 605 } 606 607 WakeLock wakeLock = mWakeLocks.get(index); 608 mWakeLocks.remove(index); 609 notifyWakeLockReleasedLocked(wakeLock); 610 wakeLock.mLock.unlinkToDeath(wakeLock, 0); 611 612 if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) { 613 mRequestWaitForNegativeProximity = true; 614 } 615 616 applyWakeLockFlagsOnReleaseLocked(wakeLock); 617 mDirty |= DIRTY_WAKE_LOCKS; 618 updatePowerStateLocked(); 619 } 620 } 621 622 private void handleWakeLockDeath(WakeLock wakeLock) { 623 synchronized (mLock) { 624 if (DEBUG_SPEW) { 625 Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock)); 626 } 627 628 int index = mWakeLocks.indexOf(wakeLock); 629 if (index < 0) { 630 return; 631 } 632 633 mWakeLocks.remove(index); 634 notifyWakeLockReleasedLocked(wakeLock); 635 636 applyWakeLockFlagsOnReleaseLocked(wakeLock); 637 mDirty |= DIRTY_WAKE_LOCKS; 638 updatePowerStateLocked(); 639 } 640 } 641 642 private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) { 643 if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 644 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 645 PowerManager.USER_ACTIVITY_EVENT_OTHER, 646 PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS, 647 wakeLock.mOwnerUid); 648 } 649 } 650 651 @Override // Binder call 652 public void updateWakeLockWorkSource(IBinder lock, WorkSource ws) { 653 if (lock == null) { 654 throw new IllegalArgumentException("lock must not be null"); 655 } 656 657 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null); 658 if (ws != null && ws.size() != 0) { 659 mContext.enforceCallingOrSelfPermission( 660 android.Manifest.permission.UPDATE_DEVICE_STATS, null); 661 } else { 662 ws = null; 663 } 664 665 final long ident = Binder.clearCallingIdentity(); 666 try { 667 updateWakeLockWorkSourceInternal(lock, ws); 668 } finally { 669 Binder.restoreCallingIdentity(ident); 670 } 671 } 672 673 private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws) { 674 synchronized (mLock) { 675 int index = findWakeLockIndexLocked(lock); 676 if (index < 0) { 677 throw new IllegalArgumentException("Wake lock not active"); 678 } 679 680 WakeLock wakeLock = mWakeLocks.get(index); 681 if (!wakeLock.hasSameWorkSource(ws)) { 682 notifyWakeLockReleasedLocked(wakeLock); 683 wakeLock.updateWorkSource(ws); 684 notifyWakeLockAcquiredLocked(wakeLock); 685 } 686 } 687 } 688 689 private int findWakeLockIndexLocked(IBinder lock) { 690 final int count = mWakeLocks.size(); 691 for (int i = 0; i < count; i++) { 692 if (mWakeLocks.get(i).mLock == lock) { 693 return i; 694 } 695 } 696 return -1; 697 } 698 699 private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) { 700 if (mSystemReady) { 701 mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag, 702 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 703 } 704 } 705 706 private void notifyWakeLockReleasedLocked(WakeLock wakeLock) { 707 if (mSystemReady) { 708 mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag, 709 wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource); 710 } 711 } 712 713 @Override // Binder call 714 public boolean isWakeLockLevelSupported(int level) { 715 final long ident = Binder.clearCallingIdentity(); 716 try { 717 return isWakeLockLevelSupportedInternal(level); 718 } finally { 719 Binder.restoreCallingIdentity(ident); 720 } 721 } 722 723 private boolean isWakeLockLevelSupportedInternal(int level) { 724 synchronized (mLock) { 725 switch (level) { 726 case PowerManager.PARTIAL_WAKE_LOCK: 727 case PowerManager.SCREEN_DIM_WAKE_LOCK: 728 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 729 case PowerManager.FULL_WAKE_LOCK: 730 return true; 731 732 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 733 return mSystemReady && mDisplayPowerController.isProximitySensorAvailable(); 734 735 default: 736 return false; 737 } 738 } 739 } 740 741 @Override // Binder call 742 public void userActivity(long eventTime, int event, int flags) { 743 final long now = SystemClock.uptimeMillis(); 744 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER) 745 != PackageManager.PERMISSION_GRANTED) { 746 // Once upon a time applications could call userActivity(). 747 // Now we require the DEVICE_POWER permission. Log a warning and ignore the 748 // request instead of throwing a SecurityException so we don't break old apps. 749 synchronized (mLock) { 750 if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) { 751 mLastWarningAboutUserActivityPermission = now; 752 Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the " 753 + "caller does not have DEVICE_POWER permission. " 754 + "Please fix your app! " 755 + " pid=" + Binder.getCallingPid() 756 + " uid=" + Binder.getCallingUid()); 757 } 758 } 759 return; 760 } 761 762 if (eventTime > SystemClock.uptimeMillis()) { 763 throw new IllegalArgumentException("event time must not be in the future"); 764 } 765 766 final int uid = Binder.getCallingUid(); 767 final long ident = Binder.clearCallingIdentity(); 768 try { 769 userActivityInternal(eventTime, event, flags, uid); 770 } finally { 771 Binder.restoreCallingIdentity(ident); 772 } 773 } 774 775 // Called from native code. 776 private void userActivityFromNative(long eventTime, int event, int flags) { 777 userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID); 778 } 779 780 private void userActivityInternal(long eventTime, int event, int flags, int uid) { 781 synchronized (mLock) { 782 if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) { 783 updatePowerStateLocked(); 784 } 785 } 786 } 787 788 private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) { 789 if (DEBUG_SPEW) { 790 Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime 791 + ", event=" + event + ", flags=0x" + Integer.toHexString(flags) 792 + ", uid=" + uid); 793 } 794 795 if (eventTime < mLastSleepTime || eventTime < mLastWakeTime 796 || mWakefulness == WAKEFULNESS_ASLEEP || !mBootCompleted || !mSystemReady) { 797 return false; 798 } 799 800 mNotifier.onUserActivity(event, uid); 801 802 if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) { 803 if (eventTime > mLastUserActivityTimeNoChangeLights 804 && eventTime > mLastUserActivityTime) { 805 mLastUserActivityTimeNoChangeLights = eventTime; 806 mDirty |= DIRTY_USER_ACTIVITY; 807 return true; 808 } 809 } else { 810 if (eventTime > mLastUserActivityTime) { 811 mLastUserActivityTime = eventTime; 812 mDirty |= DIRTY_USER_ACTIVITY; 813 return true; 814 } 815 } 816 return false; 817 } 818 819 @Override // Binder call 820 public void wakeUp(long eventTime) { 821 if (eventTime > SystemClock.uptimeMillis()) { 822 throw new IllegalArgumentException("event time must not be in the future"); 823 } 824 825 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 826 827 final long ident = Binder.clearCallingIdentity(); 828 try { 829 wakeUpInternal(eventTime); 830 } finally { 831 Binder.restoreCallingIdentity(ident); 832 } 833 } 834 835 // Called from native code. 836 private void wakeUpFromNative(long eventTime) { 837 wakeUpInternal(eventTime); 838 } 839 840 private void wakeUpInternal(long eventTime) { 841 synchronized (mLock) { 842 if (wakeUpNoUpdateLocked(eventTime)) { 843 updatePowerStateLocked(); 844 } 845 } 846 } 847 848 private boolean wakeUpNoUpdateLocked(long eventTime) { 849 if (DEBUG_SPEW) { 850 Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime); 851 } 852 853 if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE 854 || !mBootCompleted || !mSystemReady) { 855 return false; 856 } 857 858 switch (mWakefulness) { 859 case WAKEFULNESS_ASLEEP: 860 Slog.i(TAG, "Waking up from sleep..."); 861 sendPendingNotificationsLocked(); 862 mNotifier.onWakeUpStarted(); 863 mSendWakeUpFinishedNotificationWhenReady = true; 864 break; 865 case WAKEFULNESS_DREAMING: 866 Slog.i(TAG, "Waking up from dream..."); 867 break; 868 case WAKEFULNESS_NAPPING: 869 Slog.i(TAG, "Waking up from nap..."); 870 break; 871 } 872 873 mLastWakeTime = eventTime; 874 mWakefulness = WAKEFULNESS_AWAKE; 875 mDirty |= DIRTY_WAKEFULNESS; 876 877 userActivityNoUpdateLocked( 878 eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 879 return true; 880 } 881 882 @Override // Binder call 883 public void goToSleep(long eventTime, int reason) { 884 if (eventTime > SystemClock.uptimeMillis()) { 885 throw new IllegalArgumentException("event time must not be in the future"); 886 } 887 888 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 889 890 final long ident = Binder.clearCallingIdentity(); 891 try { 892 goToSleepInternal(eventTime, reason); 893 } finally { 894 Binder.restoreCallingIdentity(ident); 895 } 896 } 897 898 // Called from native code. 899 private void goToSleepFromNative(long eventTime, int reason) { 900 goToSleepInternal(eventTime, reason); 901 } 902 903 private void goToSleepInternal(long eventTime, int reason) { 904 synchronized (mLock) { 905 if (goToSleepNoUpdateLocked(eventTime, reason)) { 906 updatePowerStateLocked(); 907 } 908 } 909 } 910 911 private boolean goToSleepNoUpdateLocked(long eventTime, int reason) { 912 if (DEBUG_SPEW) { 913 Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime + ", reason=" + reason); 914 } 915 916 if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP 917 || !mBootCompleted || !mSystemReady) { 918 return false; 919 } 920 921 switch (reason) { 922 case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN: 923 Slog.i(TAG, "Going to sleep due to device administration policy..."); 924 break; 925 case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT: 926 Slog.i(TAG, "Going to sleep due to screen timeout..."); 927 break; 928 default: 929 Slog.i(TAG, "Going to sleep by user request..."); 930 reason = PowerManager.GO_TO_SLEEP_REASON_USER; 931 break; 932 } 933 934 sendPendingNotificationsLocked(); 935 mNotifier.onGoToSleepStarted(reason); 936 mSendGoToSleepFinishedNotificationWhenReady = true; 937 938 mLastSleepTime = eventTime; 939 mDirty |= DIRTY_WAKEFULNESS; 940 mWakefulness = WAKEFULNESS_ASLEEP; 941 942 // Report the number of wake locks that will be cleared by going to sleep. 943 int numWakeLocksCleared = 0; 944 final int numWakeLocks = mWakeLocks.size(); 945 for (int i = 0; i < numWakeLocks; i++) { 946 final WakeLock wakeLock = mWakeLocks.get(i); 947 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 948 case PowerManager.FULL_WAKE_LOCK: 949 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 950 case PowerManager.SCREEN_DIM_WAKE_LOCK: 951 numWakeLocksCleared += 1; 952 break; 953 } 954 } 955 EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared); 956 return true; 957 } 958 959 @Override // Binder call 960 public void nap(long eventTime) { 961 if (eventTime > SystemClock.uptimeMillis()) { 962 throw new IllegalArgumentException("event time must not be in the future"); 963 } 964 965 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 966 967 final long ident = Binder.clearCallingIdentity(); 968 try { 969 napInternal(eventTime); 970 } finally { 971 Binder.restoreCallingIdentity(ident); 972 } 973 } 974 975 private void napInternal(long eventTime) { 976 synchronized (mLock) { 977 if (napNoUpdateLocked(eventTime)) { 978 updatePowerStateLocked(); 979 } 980 } 981 } 982 983 private boolean napNoUpdateLocked(long eventTime) { 984 if (DEBUG_SPEW) { 985 Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime); 986 } 987 988 if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE 989 || !mBootCompleted || !mSystemReady) { 990 return false; 991 } 992 993 Slog.i(TAG, "Nap time..."); 994 995 mDirty |= DIRTY_WAKEFULNESS; 996 mWakefulness = WAKEFULNESS_NAPPING; 997 return true; 998 } 999 1000 /** 1001 * Updates the global power state based on dirty bits recorded in mDirty. 1002 * 1003 * This is the main function that performs power state transitions. 1004 * We centralize them here so that we can recompute the power state completely 1005 * each time something important changes, and ensure that we do it the same 1006 * way each time. The point is to gather all of the transition logic here. 1007 */ 1008 private void updatePowerStateLocked() { 1009 if (!mSystemReady || mDirty == 0) { 1010 return; 1011 } 1012 1013 // Phase 0: Basic state updates. 1014 updateIsPoweredLocked(mDirty); 1015 updateStayOnLocked(mDirty); 1016 1017 // Phase 1: Update wakefulness. 1018 // Loop because the wake lock and user activity computations are influenced 1019 // by changes in wakefulness. 1020 final long now = SystemClock.uptimeMillis(); 1021 int dirtyPhase2 = 0; 1022 for (;;) { 1023 int dirtyPhase1 = mDirty; 1024 dirtyPhase2 |= dirtyPhase1; 1025 mDirty = 0; 1026 1027 updateWakeLockSummaryLocked(dirtyPhase1); 1028 updateUserActivitySummaryLocked(now, dirtyPhase1); 1029 if (!updateWakefulnessLocked(dirtyPhase1)) { 1030 break; 1031 } 1032 } 1033 1034 // Phase 2: Update dreams and display power state. 1035 updateDreamLocked(dirtyPhase2); 1036 updateDisplayPowerStateLocked(dirtyPhase2); 1037 1038 // Phase 3: Send notifications, if needed. 1039 if (mDisplayReady) { 1040 sendPendingNotificationsLocked(); 1041 } 1042 1043 // Phase 4: Update suspend blocker. 1044 // Because we might release the last suspend blocker here, we need to make sure 1045 // we finished everything else first! 1046 updateSuspendBlockerLocked(); 1047 } 1048 1049 private void sendPendingNotificationsLocked() { 1050 if (mSendWakeUpFinishedNotificationWhenReady) { 1051 mSendWakeUpFinishedNotificationWhenReady = false; 1052 mNotifier.onWakeUpFinished(); 1053 } 1054 if (mSendGoToSleepFinishedNotificationWhenReady) { 1055 mSendGoToSleepFinishedNotificationWhenReady = false; 1056 mNotifier.onGoToSleepFinished(); 1057 } 1058 } 1059 1060 /** 1061 * Updates the value of mIsPowered. 1062 * Sets DIRTY_IS_POWERED if a change occurred. 1063 */ 1064 private void updateIsPoweredLocked(int dirty) { 1065 if ((dirty & DIRTY_BATTERY_STATE) != 0) { 1066 final boolean wasPowered = mIsPowered; 1067 final int oldPlugType = mPlugType; 1068 mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY); 1069 mPlugType = mBatteryService.getPlugType(); 1070 1071 if (DEBUG) { 1072 Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered 1073 + ", mIsPowered=" + mIsPowered 1074 + ", oldPlugType=" + oldPlugType 1075 + ", mPlugType=" + mPlugType); 1076 } 1077 1078 if (wasPowered != mIsPowered || oldPlugType != mPlugType) { 1079 mDirty |= DIRTY_IS_POWERED; 1080 1081 // Treat plugging and unplugging the devices as a user activity. 1082 // Users find it disconcerting when they plug or unplug the device 1083 // and it shuts off right away. 1084 // Some devices also wake the device when plugged or unplugged because 1085 // they don't have a charging LED. 1086 final long now = SystemClock.uptimeMillis(); 1087 if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType)) { 1088 wakeUpNoUpdateLocked(now); 1089 } 1090 userActivityNoUpdateLocked( 1091 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1092 } 1093 } 1094 } 1095 1096 private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked(boolean wasPowered, int oldPlugType) { 1097 // Don't wake when powered unless configured to do so. 1098 if (!mWakeUpWhenPluggedOrUnpluggedConfig) { 1099 return false; 1100 } 1101 1102 // FIXME: Need more accurate detection of wireless chargers. 1103 // 1104 // We are unable to accurately detect whether the device is resting on the 1105 // charger unless it is actually receiving power. This causes us some grief 1106 // because the device might not appear to be plugged into the wireless charger 1107 // unless it actually charging. 1108 // 1109 // To avoid spuriously waking the screen, we apply a special policy to 1110 // wireless chargers. 1111 // 1112 // 1. Don't wake the device when unplugged from wireless charger because 1113 // it might be that the device is still resting on the wireless charger 1114 // but is not receiving power anymore because the battery is full. 1115 // 1116 // 2. Don't wake the device when plugged into a wireless charger if the 1117 // battery already appears to be mostly full. This situation may indicate 1118 // that the device was resting on the charger the whole time and simply 1119 // wasn't receiving power because the battery was full. We can't tell 1120 // whether the device was just placed on the charger or whether it has 1121 // been there for half of the night slowly discharging until it hit 1122 // the point where it needed to start charging again. 1123 if (wasPowered && !mIsPowered 1124 && oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { 1125 return false; 1126 } 1127 if (!wasPowered && mIsPowered 1128 && mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS 1129 && mBatteryService.getBatteryLevel() >= 1130 WIRELESS_CHARGER_TURN_ON_BATTERY_LEVEL_LIMIT) { 1131 return false; 1132 } 1133 1134 // If already dreaming and becoming powered, then don't wake. 1135 if (mIsPowered && (mWakefulness == WAKEFULNESS_NAPPING 1136 || mWakefulness == WAKEFULNESS_DREAMING)) { 1137 return false; 1138 } 1139 1140 // Otherwise wake up! 1141 return true; 1142 } 1143 1144 /** 1145 * Updates the value of mStayOn. 1146 * Sets DIRTY_STAY_ON if a change occurred. 1147 */ 1148 private void updateStayOnLocked(int dirty) { 1149 if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) { 1150 final boolean wasStayOn = mStayOn; 1151 if (mStayOnWhilePluggedInSetting != 0 1152 && !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1153 mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting); 1154 } else { 1155 mStayOn = false; 1156 } 1157 1158 if (mStayOn != wasStayOn) { 1159 mDirty |= DIRTY_STAY_ON; 1160 } 1161 } 1162 } 1163 1164 /** 1165 * Updates the value of mWakeLockSummary to summarize the state of all active wake locks. 1166 * Note that most wake-locks are ignored when the system is asleep. 1167 * 1168 * This function must have no other side-effects. 1169 */ 1170 private void updateWakeLockSummaryLocked(int dirty) { 1171 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) { 1172 mWakeLockSummary = 0; 1173 1174 final int numWakeLocks = mWakeLocks.size(); 1175 for (int i = 0; i < numWakeLocks; i++) { 1176 final WakeLock wakeLock = mWakeLocks.get(i); 1177 switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 1178 case PowerManager.PARTIAL_WAKE_LOCK: 1179 mWakeLockSummary |= WAKE_LOCK_CPU; 1180 break; 1181 case PowerManager.FULL_WAKE_LOCK: 1182 if (mWakefulness != WAKEFULNESS_ASLEEP) { 1183 mWakeLockSummary |= WAKE_LOCK_CPU 1184 | WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT; 1185 if (mWakefulness == WAKEFULNESS_AWAKE) { 1186 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1187 } 1188 } 1189 break; 1190 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 1191 if (mWakefulness != WAKEFULNESS_ASLEEP) { 1192 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_SCREEN_BRIGHT; 1193 if (mWakefulness == WAKEFULNESS_AWAKE) { 1194 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1195 } 1196 } 1197 break; 1198 case PowerManager.SCREEN_DIM_WAKE_LOCK: 1199 if (mWakefulness != WAKEFULNESS_ASLEEP) { 1200 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_SCREEN_DIM; 1201 if (mWakefulness == WAKEFULNESS_AWAKE) { 1202 mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE; 1203 } 1204 } 1205 break; 1206 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 1207 if (mWakefulness != WAKEFULNESS_ASLEEP) { 1208 mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_PROXIMITY_SCREEN_OFF; 1209 } 1210 break; 1211 } 1212 } 1213 1214 if (DEBUG_SPEW) { 1215 Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness=" 1216 + wakefulnessToString(mWakefulness) 1217 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 1218 } 1219 } 1220 } 1221 1222 /** 1223 * Updates the value of mUserActivitySummary to summarize the user requested 1224 * state of the system such as whether the screen should be bright or dim. 1225 * Note that user activity is ignored when the system is asleep. 1226 * 1227 * This function must have no other side-effects. 1228 */ 1229 private void updateUserActivitySummaryLocked(long now, int dirty) { 1230 // Update the status of the user activity timeout timer. 1231 if ((dirty & (DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) { 1232 mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT); 1233 1234 long nextTimeout = 0; 1235 if (mWakefulness != WAKEFULNESS_ASLEEP) { 1236 final int screenOffTimeout = getScreenOffTimeoutLocked(); 1237 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 1238 1239 mUserActivitySummary = 0; 1240 if (mLastUserActivityTime >= mLastWakeTime) { 1241 nextTimeout = mLastUserActivityTime 1242 + screenOffTimeout - screenDimDuration; 1243 if (now < nextTimeout) { 1244 mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT; 1245 } else { 1246 nextTimeout = mLastUserActivityTime + screenOffTimeout; 1247 if (now < nextTimeout) { 1248 mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM; 1249 } 1250 } 1251 } 1252 if (mUserActivitySummary == 0 1253 && mLastUserActivityTimeNoChangeLights >= mLastWakeTime) { 1254 nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout; 1255 if (now < nextTimeout 1256 && mDisplayPowerRequest.screenState 1257 != DisplayPowerRequest.SCREEN_STATE_OFF) { 1258 mUserActivitySummary = mDisplayPowerRequest.screenState 1259 == DisplayPowerRequest.SCREEN_STATE_BRIGHT ? 1260 USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM; 1261 } 1262 } 1263 if (mUserActivitySummary != 0) { 1264 Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT); 1265 msg.setAsynchronous(true); 1266 mHandler.sendMessageAtTime(msg, nextTimeout); 1267 } 1268 } else { 1269 mUserActivitySummary = 0; 1270 } 1271 1272 if (DEBUG_SPEW) { 1273 Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness=" 1274 + wakefulnessToString(mWakefulness) 1275 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1276 + ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout)); 1277 } 1278 } 1279 } 1280 1281 /** 1282 * Called when a user activity timeout has occurred. 1283 * Simply indicates that something about user activity has changed so that the new 1284 * state can be recomputed when the power state is updated. 1285 * 1286 * This function must have no other side-effects besides setting the dirty 1287 * bit and calling update power state. Wakefulness transitions are handled elsewhere. 1288 */ 1289 private void handleUserActivityTimeout() { // runs on handler thread 1290 synchronized (mLock) { 1291 if (DEBUG_SPEW) { 1292 Slog.d(TAG, "handleUserActivityTimeout"); 1293 } 1294 1295 mDirty |= DIRTY_USER_ACTIVITY; 1296 updatePowerStateLocked(); 1297 } 1298 } 1299 1300 private int getScreenOffTimeoutLocked() { 1301 int timeout = mScreenOffTimeoutSetting; 1302 if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) { 1303 timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin); 1304 } 1305 if (mUserActivityTimeoutOverrideFromWindowManager >= 0) { 1306 timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager); 1307 } 1308 return Math.max(timeout, MINIMUM_SCREEN_OFF_TIMEOUT); 1309 } 1310 1311 private int getScreenDimDurationLocked(int screenOffTimeout) { 1312 return Math.min(SCREEN_DIM_DURATION, 1313 (int)(screenOffTimeout * MAXIMUM_SCREEN_DIM_RATIO)); 1314 } 1315 1316 /** 1317 * Updates the wakefulness of the device. 1318 * 1319 * This is the function that decides whether the device should start napping 1320 * based on the current wake locks and user activity state. It may modify mDirty 1321 * if the wakefulness changes. 1322 * 1323 * Returns true if the wakefulness changed and we need to restart power state calculation. 1324 */ 1325 private boolean updateWakefulnessLocked(int dirty) { 1326 boolean changed = false; 1327 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED 1328 | DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE)) != 0) { 1329 if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) { 1330 if (DEBUG_SPEW) { 1331 Slog.d(TAG, "updateWakefulnessLocked: Bed time..."); 1332 } 1333 final long time = SystemClock.uptimeMillis(); 1334 if (mDreamsActivateOnSleepSetting) { 1335 changed = napNoUpdateLocked(time); 1336 } else { 1337 changed = goToSleepNoUpdateLocked(time, 1338 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1339 } 1340 } 1341 } 1342 return changed; 1343 } 1344 1345 /** 1346 * Returns true if the device should go to sleep now. 1347 * Also used when exiting a dream to determine whether we should go back 1348 * to being fully awake or else go to sleep for good. 1349 */ 1350 private boolean isItBedTimeYetLocked() { 1351 return mBootCompleted && !isBeingKeptAwakeLocked(); 1352 } 1353 1354 /** 1355 * Returns true if the device is being kept awake by a wake lock, user activity 1356 * or the stay on while powered setting. 1357 */ 1358 private boolean isBeingKeptAwakeLocked() { 1359 return mStayOn 1360 || mProximityPositive 1361 || (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0 1362 || (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT 1363 | USER_ACTIVITY_SCREEN_DIM)) != 0; 1364 } 1365 1366 /** 1367 * Determines whether to post a message to the sandman to update the dream state. 1368 */ 1369 private void updateDreamLocked(int dirty) { 1370 if ((dirty & (DIRTY_WAKEFULNESS 1371 | DIRTY_USER_ACTIVITY 1372 | DIRTY_WAKE_LOCKS 1373 | DIRTY_BOOT_COMPLETED 1374 | DIRTY_SETTINGS 1375 | DIRTY_IS_POWERED 1376 | DIRTY_STAY_ON 1377 | DIRTY_PROXIMITY_POSITIVE 1378 | DIRTY_BATTERY_STATE)) != 0) { 1379 scheduleSandmanLocked(); 1380 } 1381 } 1382 1383 private void scheduleSandmanLocked() { 1384 if (!mSandmanScheduled) { 1385 mSandmanScheduled = true; 1386 Message msg = mHandler.obtainMessage(MSG_SANDMAN); 1387 msg.setAsynchronous(true); 1388 mHandler.sendMessage(msg); 1389 } 1390 } 1391 1392 /** 1393 * Called when the device enters or exits a napping or dreaming state. 1394 * 1395 * We do this asynchronously because we must call out of the power manager to start 1396 * the dream and we don't want to hold our lock while doing so. There is a risk that 1397 * the device will wake or go to sleep in the meantime so we have to handle that case. 1398 */ 1399 private void handleSandman() { // runs on handler thread 1400 // Handle preconditions. 1401 boolean startDreaming = false; 1402 synchronized (mLock) { 1403 mSandmanScheduled = false; 1404 boolean canDream = canDreamLocked(); 1405 if (DEBUG_SPEW) { 1406 Log.d(TAG, "handleSandman: canDream=" + canDream 1407 + ", mWakefulness=" + wakefulnessToString(mWakefulness)); 1408 } 1409 1410 if (canDream && mWakefulness == WAKEFULNESS_NAPPING) { 1411 startDreaming = true; 1412 } 1413 } 1414 1415 // Start dreaming if needed. 1416 // We only control the dream on the handler thread, so we don't need to worry about 1417 // concurrent attempts to start or stop the dream. 1418 boolean isDreaming = false; 1419 if (mDreamManager != null) { 1420 if (startDreaming) { 1421 mDreamManager.startDream(); 1422 } 1423 isDreaming = mDreamManager.isDreaming(); 1424 } 1425 1426 // Update dream state. 1427 // We might need to stop the dream again if the preconditions changed. 1428 boolean continueDreaming = false; 1429 synchronized (mLock) { 1430 if (isDreaming && canDreamLocked()) { 1431 if (mWakefulness == WAKEFULNESS_NAPPING) { 1432 mWakefulness = WAKEFULNESS_DREAMING; 1433 mDirty |= DIRTY_WAKEFULNESS; 1434 updatePowerStateLocked(); 1435 continueDreaming = true; 1436 } else if (mWakefulness == WAKEFULNESS_DREAMING) { 1437 continueDreaming = true; 1438 } 1439 } 1440 if (!continueDreaming) { 1441 handleDreamFinishedLocked(); 1442 } 1443 } 1444 1445 // Stop dreaming if needed. 1446 // It's possible that something else changed to make us need to start the dream again. 1447 // If so, then the power manager will have posted another message to the handler 1448 // to take care of it later. 1449 if (mDreamManager != null) { 1450 if (!continueDreaming) { 1451 mDreamManager.stopDream(); 1452 } 1453 } 1454 } 1455 1456 /** 1457 * Returns true if the device is allowed to dream in its current state 1458 * assuming that it is currently napping or dreaming. 1459 */ 1460 private boolean canDreamLocked() { 1461 return mDreamsSupportedConfig 1462 && mDreamsEnabledSetting 1463 && mDisplayPowerRequest.screenState != DisplayPowerRequest.SCREEN_STATE_OFF 1464 && mBootCompleted 1465 && (mIsPowered || isBeingKeptAwakeLocked()); 1466 } 1467 1468 /** 1469 * Called when a dream is ending to figure out what to do next. 1470 */ 1471 private void handleDreamFinishedLocked() { 1472 if (mWakefulness == WAKEFULNESS_NAPPING 1473 || mWakefulness == WAKEFULNESS_DREAMING) { 1474 if (isItBedTimeYetLocked()) { 1475 goToSleepNoUpdateLocked(SystemClock.uptimeMillis(), 1476 PowerManager.GO_TO_SLEEP_REASON_TIMEOUT); 1477 updatePowerStateLocked(); 1478 } else { 1479 wakeUpNoUpdateLocked(SystemClock.uptimeMillis()); 1480 updatePowerStateLocked(); 1481 } 1482 } 1483 } 1484 1485 private void handleScreenOnBlockerReleased() { 1486 synchronized (mLock) { 1487 mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED; 1488 updatePowerStateLocked(); 1489 } 1490 } 1491 1492 /** 1493 * Updates the display power state asynchronously. 1494 * When the update is finished, mDisplayReady will be set to true. The display 1495 * controller posts a message to tell us when the actual display power state 1496 * has been updated so we come back here to double-check and finish up. 1497 * 1498 * This function recalculates the display power state each time. 1499 */ 1500 private void updateDisplayPowerStateLocked(int dirty) { 1501 if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS 1502 | DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED 1503 | DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) { 1504 int newScreenState = getDesiredScreenPowerStateLocked(); 1505 if (newScreenState != mDisplayPowerRequest.screenState) { 1506 if (newScreenState == DisplayPowerRequest.SCREEN_STATE_OFF 1507 && mDisplayPowerRequest.screenState 1508 != DisplayPowerRequest.SCREEN_STATE_OFF) { 1509 mLastScreenOffEventElapsedRealTime = SystemClock.elapsedRealtime(); 1510 } 1511 1512 mDisplayPowerRequest.screenState = newScreenState; 1513 nativeSetPowerState( 1514 newScreenState != DisplayPowerRequest.SCREEN_STATE_OFF, 1515 newScreenState == DisplayPowerRequest.SCREEN_STATE_BRIGHT); 1516 } 1517 1518 int screenBrightness = mScreenBrightnessSettingDefault; 1519 float screenAutoBrightnessAdjustment = 0.0f; 1520 boolean autoBrightness = (mScreenBrightnessModeSetting == 1521 Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC); 1522 if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) { 1523 screenBrightness = mScreenBrightnessOverrideFromWindowManager; 1524 autoBrightness = false; 1525 } else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) { 1526 screenBrightness = mTemporaryScreenBrightnessSettingOverride; 1527 } else if (isValidBrightness(mScreenBrightnessSetting)) { 1528 screenBrightness = mScreenBrightnessSetting; 1529 } 1530 if (autoBrightness) { 1531 screenBrightness = mScreenBrightnessSettingDefault; 1532 if (isValidAutoBrightnessAdjustment( 1533 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) { 1534 screenAutoBrightnessAdjustment = 1535 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride; 1536 } else if (isValidAutoBrightnessAdjustment( 1537 mScreenAutoBrightnessAdjustmentSetting)) { 1538 screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting; 1539 } 1540 } 1541 screenBrightness = Math.max(Math.min(screenBrightness, 1542 mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum); 1543 screenAutoBrightnessAdjustment = Math.max(Math.min( 1544 screenAutoBrightnessAdjustment, 1.0f), -1.0f); 1545 mDisplayPowerRequest.screenBrightness = screenBrightness; 1546 mDisplayPowerRequest.screenAutoBrightnessAdjustment = 1547 screenAutoBrightnessAdjustment; 1548 mDisplayPowerRequest.useAutoBrightness = autoBrightness; 1549 1550 mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked(); 1551 1552 mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld(); 1553 1554 mDisplayReady = mDisplayPowerController.requestPowerState(mDisplayPowerRequest, 1555 mRequestWaitForNegativeProximity); 1556 mRequestWaitForNegativeProximity = false; 1557 1558 if (DEBUG_SPEW) { 1559 Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady 1560 + ", newScreenState=" + newScreenState 1561 + ", mWakefulness=" + mWakefulness 1562 + ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary) 1563 + ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary) 1564 + ", mBootCompleted=" + mBootCompleted); 1565 } 1566 } 1567 } 1568 1569 private static boolean isValidBrightness(int value) { 1570 return value >= 0 && value <= 255; 1571 } 1572 1573 private static boolean isValidAutoBrightnessAdjustment(float value) { 1574 // Handles NaN by always returning false. 1575 return value >= -1.0f && value <= 1.0f; 1576 } 1577 1578 private int getDesiredScreenPowerStateLocked() { 1579 if (mWakefulness == WAKEFULNESS_ASLEEP) { 1580 return DisplayPowerRequest.SCREEN_STATE_OFF; 1581 } 1582 1583 if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0 1584 || (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0 1585 || !mBootCompleted) { 1586 return DisplayPowerRequest.SCREEN_STATE_BRIGHT; 1587 } 1588 1589 return DisplayPowerRequest.SCREEN_STATE_DIM; 1590 } 1591 1592 private final DisplayPowerController.Callbacks mDisplayPowerControllerCallbacks = 1593 new DisplayPowerController.Callbacks() { 1594 @Override 1595 public void onStateChanged() { 1596 mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED; 1597 updatePowerStateLocked(); 1598 } 1599 1600 @Override 1601 public void onProximityPositive() { 1602 mProximityPositive = true; 1603 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1604 updatePowerStateLocked(); 1605 } 1606 1607 @Override 1608 public void onProximityNegative() { 1609 mProximityPositive = false; 1610 mDirty |= DIRTY_PROXIMITY_POSITIVE; 1611 userActivityNoUpdateLocked(SystemClock.uptimeMillis(), 1612 PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1613 updatePowerStateLocked(); 1614 } 1615 }; 1616 1617 private boolean shouldUseProximitySensorLocked() { 1618 return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0; 1619 } 1620 1621 /** 1622 * Updates the suspend blocker that keeps the CPU alive. 1623 * 1624 * This function must have no other side-effects. 1625 */ 1626 private void updateSuspendBlockerLocked() { 1627 boolean wantCpu = isCpuNeededLocked(); 1628 if (wantCpu != mHoldingWakeLockSuspendBlocker) { 1629 mHoldingWakeLockSuspendBlocker = wantCpu; 1630 if (wantCpu) { 1631 if (DEBUG) { 1632 Slog.d(TAG, "updateSuspendBlockerLocked: Acquiring suspend blocker."); 1633 } 1634 mWakeLockSuspendBlocker.acquire(); 1635 } else { 1636 if (DEBUG) { 1637 Slog.d(TAG, "updateSuspendBlockerLocked: Releasing suspend blocker."); 1638 } 1639 mWakeLockSuspendBlocker.release(); 1640 } 1641 } 1642 } 1643 1644 private boolean isCpuNeededLocked() { 1645 return !mBootCompleted 1646 || mWakeLockSummary != 0 1647 || mUserActivitySummary != 0 1648 || mDisplayPowerRequest.screenState != DisplayPowerRequest.SCREEN_STATE_OFF 1649 || !mDisplayReady; 1650 } 1651 1652 @Override // Binder call 1653 public boolean isScreenOn() { 1654 final long ident = Binder.clearCallingIdentity(); 1655 try { 1656 return isScreenOnInternal(); 1657 } finally { 1658 Binder.restoreCallingIdentity(ident); 1659 } 1660 } 1661 1662 private boolean isScreenOnInternal() { 1663 synchronized (mLock) { 1664 return !mSystemReady 1665 || mDisplayPowerRequest.screenState != DisplayPowerRequest.SCREEN_STATE_OFF; 1666 } 1667 } 1668 1669 private void handleBatteryStateChangedLocked() { 1670 mDirty |= DIRTY_BATTERY_STATE; 1671 updatePowerStateLocked(); 1672 } 1673 1674 private void startWatchingForBootAnimationFinished() { 1675 mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED); 1676 } 1677 1678 private void checkIfBootAnimationFinished() { 1679 if (DEBUG) { 1680 Slog.d(TAG, "Check if boot animation finished..."); 1681 } 1682 1683 if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) { 1684 mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED, 1685 BOOT_ANIMATION_POLL_INTERVAL); 1686 return; 1687 } 1688 1689 synchronized (mLock) { 1690 if (!mBootCompleted) { 1691 Slog.i(TAG, "Boot animation finished."); 1692 handleBootCompletedLocked(); 1693 } 1694 } 1695 } 1696 1697 private void handleBootCompletedLocked() { 1698 final long now = SystemClock.uptimeMillis(); 1699 mBootCompleted = true; 1700 mDirty |= DIRTY_BOOT_COMPLETED; 1701 userActivityNoUpdateLocked( 1702 now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID); 1703 updatePowerStateLocked(); 1704 } 1705 1706 /** 1707 * Reboot the device, passing 'reason' (may be null) 1708 * to the underlying __reboot system call. Should not return. 1709 */ 1710 @Override // Binder call 1711 public void reboot(boolean confirm, String reason, boolean wait) { 1712 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 1713 1714 final long ident = Binder.clearCallingIdentity(); 1715 try { 1716 rebootInternal(false, confirm, reason, wait); 1717 } finally { 1718 Binder.restoreCallingIdentity(ident); 1719 } 1720 } 1721 1722 /** 1723 * Shutdown the devic, passing 'reason' (may be null) 1724 * to the underlying __reboot system call. Should not return. 1725 */ 1726 @Override // Binder call 1727 public void shutdown(boolean confirm, boolean wait) { 1728 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 1729 1730 final long ident = Binder.clearCallingIdentity(); 1731 try { 1732 rebootInternal(true, confirm, null, wait); 1733 } finally { 1734 Binder.restoreCallingIdentity(ident); 1735 } 1736 } 1737 1738 private void rebootInternal(final boolean shutdown, final boolean confirm, 1739 final String reason, boolean wait) { 1740 if (mHandler == null || !mSystemReady) { 1741 throw new IllegalStateException("Too early to call reboot()"); 1742 } 1743 1744 Runnable runnable = new Runnable() { 1745 public void run() { 1746 synchronized (this) { 1747 if (shutdown) { 1748 ShutdownThread.shutdown(mContext, confirm); 1749 } else { 1750 ShutdownThread.reboot(mContext, reason, confirm); 1751 } 1752 } 1753 } 1754 }; 1755 1756 // ShutdownThread must run on a looper capable of displaying the UI. 1757 Message msg = Message.obtain(mHandler, runnable); 1758 msg.setAsynchronous(true); 1759 mHandler.sendMessage(msg); 1760 1761 // PowerManager.reboot() is documented not to return so just wait for the inevitable. 1762 if (wait) { 1763 synchronized (runnable) { 1764 while (true) { 1765 try { 1766 runnable.wait(); 1767 } catch (InterruptedException e) { 1768 } 1769 } 1770 } 1771 } 1772 } 1773 1774 /** 1775 * Crash the runtime (causing a complete restart of the Android framework). 1776 * Requires REBOOT permission. Mostly for testing. Should not return. 1777 */ 1778 @Override // Binder call 1779 public void crash(String message) { 1780 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null); 1781 1782 final long ident = Binder.clearCallingIdentity(); 1783 try { 1784 crashInternal(message); 1785 } finally { 1786 Binder.restoreCallingIdentity(ident); 1787 } 1788 } 1789 1790 private void crashInternal(final String message) { 1791 Thread t = new Thread("PowerManagerService.crash()") { 1792 public void run() { 1793 throw new RuntimeException(message); 1794 } 1795 }; 1796 try { 1797 t.start(); 1798 t.join(); 1799 } catch (InterruptedException e) { 1800 Log.wtf(TAG, e); 1801 } 1802 } 1803 1804 /** 1805 * Set the setting that determines whether the device stays on when plugged in. 1806 * The argument is a bit string, with each bit specifying a power source that, 1807 * when the device is connected to that source, causes the device to stay on. 1808 * See {@link android.os.BatteryManager} for the list of power sources that 1809 * can be specified. Current values include {@link android.os.BatteryManager#BATTERY_PLUGGED_AC} 1810 * and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB} 1811 * 1812 * Used by "adb shell svc power stayon ..." 1813 * 1814 * @param val an {@code int} containing the bits that specify which power sources 1815 * should cause the device to stay on. 1816 */ 1817 @Override // Binder call 1818 public void setStayOnSetting(int val) { 1819 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WRITE_SETTINGS, null); 1820 1821 final long ident = Binder.clearCallingIdentity(); 1822 try { 1823 setStayOnSettingInternal(val); 1824 } finally { 1825 Binder.restoreCallingIdentity(ident); 1826 } 1827 } 1828 1829 private void setStayOnSettingInternal(int val) { 1830 Settings.Global.putInt(mContext.getContentResolver(), 1831 Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val); 1832 } 1833 1834 /** 1835 * Used by device administration to set the maximum screen off timeout. 1836 * 1837 * This method must only be called by the device administration policy manager. 1838 */ 1839 @Override // Binder call 1840 public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) { 1841 final long ident = Binder.clearCallingIdentity(); 1842 try { 1843 setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs); 1844 } finally { 1845 Binder.restoreCallingIdentity(ident); 1846 } 1847 } 1848 1849 private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) { 1850 synchronized (mLock) { 1851 mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs; 1852 mDirty |= DIRTY_SETTINGS; 1853 updatePowerStateLocked(); 1854 } 1855 } 1856 1857 private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() { 1858 return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0 1859 && mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE; 1860 } 1861 1862 /** 1863 * Used by the phone application to make the attention LED flash when ringing. 1864 */ 1865 @Override // Binder call 1866 public void setAttentionLight(boolean on, int color) { 1867 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 1868 1869 final long ident = Binder.clearCallingIdentity(); 1870 try { 1871 setAttentionLightInternal(on, color); 1872 } finally { 1873 Binder.restoreCallingIdentity(ident); 1874 } 1875 } 1876 1877 private void setAttentionLightInternal(boolean on, int color) { 1878 LightsService.Light light; 1879 synchronized (mLock) { 1880 if (!mSystemReady) { 1881 return; 1882 } 1883 light = mAttentionLight; 1884 } 1885 1886 // Control light outside of lock. 1887 light.setFlashing(color, LightsService.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0); 1888 } 1889 1890 /** 1891 * Used by the Watchdog. 1892 */ 1893 public long timeSinceScreenWasLastOn() { 1894 synchronized (mLock) { 1895 if (mDisplayPowerRequest.screenState != DisplayPowerRequest.SCREEN_STATE_OFF) { 1896 return 0; 1897 } 1898 return SystemClock.elapsedRealtime() - mLastScreenOffEventElapsedRealTime; 1899 } 1900 } 1901 1902 /** 1903 * Used by the window manager to override the screen brightness based on the 1904 * current foreground activity. 1905 * 1906 * This method must only be called by the window manager. 1907 * 1908 * @param brightness The overridden brightness, or -1 to disable the override. 1909 */ 1910 public void setScreenBrightnessOverrideFromWindowManager(int brightness) { 1911 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 1912 1913 final long ident = Binder.clearCallingIdentity(); 1914 try { 1915 setScreenBrightnessOverrideFromWindowManagerInternal(brightness); 1916 } finally { 1917 Binder.restoreCallingIdentity(ident); 1918 } 1919 } 1920 1921 private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) { 1922 synchronized (mLock) { 1923 if (mScreenBrightnessOverrideFromWindowManager != brightness) { 1924 mScreenBrightnessOverrideFromWindowManager = brightness; 1925 mDirty |= DIRTY_SETTINGS; 1926 updatePowerStateLocked(); 1927 } 1928 } 1929 } 1930 1931 /** 1932 * Used by the window manager to override the button brightness based on the 1933 * current foreground activity. 1934 * 1935 * This method must only be called by the window manager. 1936 * 1937 * @param brightness The overridden brightness, or -1 to disable the override. 1938 */ 1939 public void setButtonBrightnessOverrideFromWindowManager(int brightness) { 1940 // Do nothing. 1941 // Button lights are not currently supported in the new implementation. 1942 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 1943 } 1944 1945 /** 1946 * Used by the window manager to override the user activity timeout based on the 1947 * current foreground activity. It can only be used to make the timeout shorter 1948 * than usual, not longer. 1949 * 1950 * This method must only be called by the window manager. 1951 * 1952 * @param timeoutMillis The overridden timeout, or -1 to disable the override. 1953 */ 1954 public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) { 1955 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 1956 1957 final long ident = Binder.clearCallingIdentity(); 1958 try { 1959 setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis); 1960 } finally { 1961 Binder.restoreCallingIdentity(ident); 1962 } 1963 } 1964 1965 private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) { 1966 synchronized (mLock) { 1967 if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) { 1968 mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis; 1969 mDirty |= DIRTY_SETTINGS; 1970 updatePowerStateLocked(); 1971 } 1972 } 1973 } 1974 1975 /** 1976 * Used by the settings application and brightness control widgets to 1977 * temporarily override the current screen brightness setting so that the 1978 * user can observe the effect of an intended settings change without applying 1979 * it immediately. 1980 * 1981 * The override will be canceled when the setting value is next updated. 1982 * 1983 * @param brightness The overridden brightness. 1984 * 1985 * @see Settings.System#SCREEN_BRIGHTNESS 1986 */ 1987 @Override // Binder call 1988 public void setTemporaryScreenBrightnessSettingOverride(int brightness) { 1989 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 1990 1991 final long ident = Binder.clearCallingIdentity(); 1992 try { 1993 setTemporaryScreenBrightnessSettingOverrideInternal(brightness); 1994 } finally { 1995 Binder.restoreCallingIdentity(ident); 1996 } 1997 } 1998 1999 private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) { 2000 synchronized (mLock) { 2001 if (mTemporaryScreenBrightnessSettingOverride != brightness) { 2002 mTemporaryScreenBrightnessSettingOverride = brightness; 2003 mDirty |= DIRTY_SETTINGS; 2004 updatePowerStateLocked(); 2005 } 2006 } 2007 } 2008 2009 /** 2010 * Used by the settings application and brightness control widgets to 2011 * temporarily override the current screen auto-brightness adjustment setting so that the 2012 * user can observe the effect of an intended settings change without applying 2013 * it immediately. 2014 * 2015 * The override will be canceled when the setting value is next updated. 2016 * 2017 * @param adj The overridden brightness, or Float.NaN to disable the override. 2018 * 2019 * @see Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ 2020 */ 2021 @Override // Binder call 2022 public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) { 2023 mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null); 2024 2025 final long ident = Binder.clearCallingIdentity(); 2026 try { 2027 setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj); 2028 } finally { 2029 Binder.restoreCallingIdentity(ident); 2030 } 2031 } 2032 2033 private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) { 2034 synchronized (mLock) { 2035 // Note: This condition handles NaN because NaN is not equal to any other 2036 // value, including itself. 2037 if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) { 2038 mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj; 2039 mDirty |= DIRTY_SETTINGS; 2040 updatePowerStateLocked(); 2041 } 2042 } 2043 } 2044 2045 /** 2046 * Low-level function turn the device off immediately, without trying 2047 * to be clean. Most people should use {@link ShutdownThread} for a clean shutdown. 2048 */ 2049 public static void lowLevelShutdown() { 2050 nativeShutdown(); 2051 } 2052 2053 /** 2054 * Low-level function to reboot the device. 2055 * 2056 * @param reason code to pass to the kernel (e.g. "recovery"), or null. 2057 * @throws IOException if reboot fails for some reason (eg, lack of 2058 * permission) 2059 */ 2060 public static void lowLevelReboot(String reason) throws IOException { 2061 nativeReboot(reason); 2062 } 2063 2064 @Override // Watchdog.Monitor implementation 2065 public void monitor() { 2066 // Grab and release lock for watchdog monitor to detect deadlocks. 2067 synchronized (mLock) { 2068 } 2069 } 2070 2071 @Override // Binder call 2072 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2073 if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP) 2074 != PackageManager.PERMISSION_GRANTED) { 2075 pw.println("Permission Denial: can't dump PowerManager from from pid=" 2076 + Binder.getCallingPid() 2077 + ", uid=" + Binder.getCallingUid()); 2078 return; 2079 } 2080 2081 pw.println("POWER MANAGER (dumpsys power)\n"); 2082 2083 final DisplayPowerController dpc; 2084 synchronized (mLock) { 2085 pw.println("Power Manager State:"); 2086 pw.println(" mDirty=0x" + Integer.toHexString(mDirty)); 2087 pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness)); 2088 pw.println(" mIsPowered=" + mIsPowered); 2089 pw.println(" mPlugType=" + mPlugType); 2090 pw.println(" mStayOn=" + mStayOn); 2091 pw.println(" mProximityPositive=" + mProximityPositive); 2092 pw.println(" mBootCompleted=" + mBootCompleted); 2093 pw.println(" mSystemReady=" + mSystemReady); 2094 pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)); 2095 pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)); 2096 pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity); 2097 pw.println(" mSandmanScheduled=" + mSandmanScheduled); 2098 pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime)); 2099 pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime)); 2100 pw.println(" mSendWakeUpFinishedNotificationWhenReady=" 2101 + mSendWakeUpFinishedNotificationWhenReady); 2102 pw.println(" mSendGoToSleepFinishedNotificationWhenReady=" 2103 + mSendGoToSleepFinishedNotificationWhenReady); 2104 pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime)); 2105 pw.println(" mLastUserActivityTimeNoChangeLights=" 2106 + TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights)); 2107 pw.println(" mDisplayReady=" + mDisplayReady); 2108 pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker); 2109 2110 pw.println(); 2111 pw.println("Settings and Configuration:"); 2112 pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig); 2113 pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting); 2114 pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting); 2115 pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting); 2116 pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin=" 2117 + mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced=" 2118 + isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")"); 2119 pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting); 2120 pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting); 2121 pw.println(" mScreenAutoBrightnessAdjustmentSetting=" 2122 + mScreenAutoBrightnessAdjustmentSetting); 2123 pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting); 2124 pw.println(" mScreenBrightnessOverrideFromWindowManager=" 2125 + mScreenBrightnessOverrideFromWindowManager); 2126 pw.println(" mUserActivityTimeoutOverrideFromWindowManager=" 2127 + mUserActivityTimeoutOverrideFromWindowManager); 2128 pw.println(" mTemporaryScreenBrightnessSettingOverride=" 2129 + mTemporaryScreenBrightnessSettingOverride); 2130 pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=" 2131 + mTemporaryScreenAutoBrightnessAdjustmentSettingOverride); 2132 pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum); 2133 pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum); 2134 pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault); 2135 2136 final int screenOffTimeout = getScreenOffTimeoutLocked(); 2137 final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout); 2138 pw.println(); 2139 pw.println("Screen off timeout: " + screenOffTimeout + " ms"); 2140 pw.println("Screen dim duration: " + screenDimDuration + " ms"); 2141 2142 pw.println(); 2143 pw.println("Wake Locks: size=" + mWakeLocks.size()); 2144 for (WakeLock wl : mWakeLocks) { 2145 pw.println(" " + wl); 2146 } 2147 2148 pw.println(); 2149 pw.println("Suspend Blockers: size=" + mSuspendBlockers.size()); 2150 for (SuspendBlocker sb : mSuspendBlockers) { 2151 pw.println(" " + sb); 2152 } 2153 2154 pw.println(); 2155 pw.println("Screen On Blocker: " + mScreenOnBlocker); 2156 2157 pw.println(); 2158 pw.println("Display Blanker: " + mDisplayBlanker); 2159 2160 dpc = mDisplayPowerController; 2161 } 2162 2163 if (dpc != null) { 2164 dpc.dump(pw); 2165 } 2166 } 2167 2168 private SuspendBlocker createSuspendBlockerLocked(String name) { 2169 SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name); 2170 mSuspendBlockers.add(suspendBlocker); 2171 return suspendBlocker; 2172 } 2173 2174 private static String wakefulnessToString(int wakefulness) { 2175 switch (wakefulness) { 2176 case WAKEFULNESS_ASLEEP: 2177 return "Asleep"; 2178 case WAKEFULNESS_AWAKE: 2179 return "Awake"; 2180 case WAKEFULNESS_DREAMING: 2181 return "Dreaming"; 2182 case WAKEFULNESS_NAPPING: 2183 return "Napping"; 2184 default: 2185 return Integer.toString(wakefulness); 2186 } 2187 } 2188 2189 private static WorkSource copyWorkSource(WorkSource workSource) { 2190 return workSource != null ? new WorkSource(workSource) : null; 2191 } 2192 2193 private final class BatteryReceiver extends BroadcastReceiver { 2194 @Override 2195 public void onReceive(Context context, Intent intent) { 2196 synchronized (mLock) { 2197 handleBatteryStateChangedLocked(); 2198 } 2199 } 2200 } 2201 2202 private final class BootCompletedReceiver extends BroadcastReceiver { 2203 @Override 2204 public void onReceive(Context context, Intent intent) { 2205 // This is our early signal that the system thinks it has finished booting. 2206 // However, the boot animation may still be running for a few more seconds 2207 // since it is ultimately in charge of when it terminates. 2208 // Defer transitioning into the boot completed state until the animation exits. 2209 // We do this so that the screen does not start to dim prematurely before 2210 // the user has actually had a chance to interact with the device. 2211 startWatchingForBootAnimationFinished(); 2212 } 2213 } 2214 2215 private final class DreamReceiver extends BroadcastReceiver { 2216 @Override 2217 public void onReceive(Context context, Intent intent) { 2218 synchronized (mLock) { 2219 scheduleSandmanLocked(); 2220 } 2221 } 2222 } 2223 2224 private final class UserSwitchedReceiver extends BroadcastReceiver { 2225 @Override 2226 public void onReceive(Context context, Intent intent) { 2227 synchronized (mLock) { 2228 handleSettingsChangedLocked(); 2229 } 2230 } 2231 } 2232 2233 private final class SettingsObserver extends ContentObserver { 2234 public SettingsObserver(Handler handler) { 2235 super(handler); 2236 } 2237 2238 @Override 2239 public void onChange(boolean selfChange, Uri uri) { 2240 synchronized (mLock) { 2241 handleSettingsChangedLocked(); 2242 } 2243 } 2244 } 2245 2246 /** 2247 * Handler for asynchronous operations performed by the power manager. 2248 */ 2249 private final class PowerManagerHandler extends Handler { 2250 public PowerManagerHandler(Looper looper) { 2251 super(looper, null, true /*async*/); 2252 } 2253 2254 @Override 2255 public void handleMessage(Message msg) { 2256 switch (msg.what) { 2257 case MSG_USER_ACTIVITY_TIMEOUT: 2258 handleUserActivityTimeout(); 2259 break; 2260 case MSG_SANDMAN: 2261 handleSandman(); 2262 break; 2263 case MSG_SCREEN_ON_BLOCKER_RELEASED: 2264 handleScreenOnBlockerReleased(); 2265 break; 2266 case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED: 2267 checkIfBootAnimationFinished(); 2268 break; 2269 } 2270 } 2271 } 2272 2273 /** 2274 * Represents a wake lock that has been acquired by an application. 2275 */ 2276 private final class WakeLock implements IBinder.DeathRecipient { 2277 public final IBinder mLock; 2278 public int mFlags; 2279 public String mTag; 2280 public WorkSource mWorkSource; 2281 public int mOwnerUid; 2282 public int mOwnerPid; 2283 2284 public WakeLock(IBinder lock, int flags, String tag, WorkSource workSource, 2285 int ownerUid, int ownerPid) { 2286 mLock = lock; 2287 mFlags = flags; 2288 mTag = tag; 2289 mWorkSource = copyWorkSource(workSource); 2290 mOwnerUid = ownerUid; 2291 mOwnerPid = ownerPid; 2292 } 2293 2294 @Override 2295 public void binderDied() { 2296 PowerManagerService.this.handleWakeLockDeath(this); 2297 } 2298 2299 public boolean hasSameProperties(int flags, String tag, WorkSource workSource, 2300 int ownerUid, int ownerPid) { 2301 return mFlags == flags 2302 && mTag.equals(tag) 2303 && hasSameWorkSource(workSource) 2304 && mOwnerUid == ownerUid 2305 && mOwnerPid == ownerPid; 2306 } 2307 2308 public void updateProperties(int flags, String tag, WorkSource workSource, 2309 int ownerUid, int ownerPid) { 2310 mFlags = flags; 2311 mTag = tag; 2312 updateWorkSource(workSource); 2313 mOwnerUid = ownerUid; 2314 mOwnerPid = ownerPid; 2315 } 2316 2317 public boolean hasSameWorkSource(WorkSource workSource) { 2318 return Objects.equal(mWorkSource, workSource); 2319 } 2320 2321 public void updateWorkSource(WorkSource workSource) { 2322 mWorkSource = copyWorkSource(workSource); 2323 } 2324 2325 @Override 2326 public String toString() { 2327 return getLockLevelString() 2328 + " '" + mTag + "'" + getLockFlagsString() 2329 + " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")"; 2330 } 2331 2332 private String getLockLevelString() { 2333 switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) { 2334 case PowerManager.FULL_WAKE_LOCK: 2335 return "FULL_WAKE_LOCK "; 2336 case PowerManager.SCREEN_BRIGHT_WAKE_LOCK: 2337 return "SCREEN_BRIGHT_WAKE_LOCK "; 2338 case PowerManager.SCREEN_DIM_WAKE_LOCK: 2339 return "SCREEN_DIM_WAKE_LOCK "; 2340 case PowerManager.PARTIAL_WAKE_LOCK: 2341 return "PARTIAL_WAKE_LOCK "; 2342 case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK: 2343 return "PROXIMITY_SCREEN_OFF_WAKE_LOCK"; 2344 default: 2345 return "??? "; 2346 } 2347 } 2348 2349 private String getLockFlagsString() { 2350 String result = ""; 2351 if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) { 2352 result += " ACQUIRE_CAUSES_WAKEUP"; 2353 } 2354 if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) { 2355 result += " ON_AFTER_RELEASE"; 2356 } 2357 return result; 2358 } 2359 } 2360 2361 private final class SuspendBlockerImpl implements SuspendBlocker { 2362 private final String mName; 2363 private int mReferenceCount; 2364 2365 public SuspendBlockerImpl(String name) { 2366 mName = name; 2367 } 2368 2369 @Override 2370 protected void finalize() throws Throwable { 2371 try { 2372 if (mReferenceCount != 0) { 2373 Log.wtf(TAG, "Suspend blocker \"" + mName 2374 + "\" was finalized without being released!"); 2375 mReferenceCount = 0; 2376 nativeReleaseSuspendBlocker(mName); 2377 } 2378 } finally { 2379 super.finalize(); 2380 } 2381 } 2382 2383 @Override 2384 public void acquire() { 2385 synchronized (this) { 2386 mReferenceCount += 1; 2387 if (mReferenceCount == 1) { 2388 nativeAcquireSuspendBlocker(mName); 2389 } 2390 } 2391 } 2392 2393 @Override 2394 public void release() { 2395 synchronized (this) { 2396 mReferenceCount -= 1; 2397 if (mReferenceCount == 0) { 2398 nativeReleaseSuspendBlocker(mName); 2399 } else if (mReferenceCount < 0) { 2400 Log.wtf(TAG, "Suspend blocker \"" + mName 2401 + "\" was released without being acquired!", new Throwable()); 2402 mReferenceCount = 0; 2403 } 2404 } 2405 } 2406 2407 @Override 2408 public String toString() { 2409 synchronized (this) { 2410 return mName + ": ref count=" + mReferenceCount; 2411 } 2412 } 2413 } 2414 2415 private final class ScreenOnBlockerImpl implements ScreenOnBlocker { 2416 private int mNestCount; 2417 2418 public boolean isHeld() { 2419 synchronized (this) { 2420 return mNestCount != 0; 2421 } 2422 } 2423 2424 @Override 2425 public void acquire() { 2426 synchronized (this) { 2427 mNestCount += 1; 2428 if (DEBUG) { 2429 Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount); 2430 } 2431 } 2432 } 2433 2434 @Override 2435 public void release() { 2436 synchronized (this) { 2437 mNestCount -= 1; 2438 if (mNestCount < 0) { 2439 Log.wtf(TAG, "Screen on blocker was released without being acquired!", 2440 new Throwable()); 2441 mNestCount = 0; 2442 } 2443 if (mNestCount == 0) { 2444 mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED); 2445 } 2446 if (DEBUG) { 2447 Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount); 2448 } 2449 } 2450 } 2451 2452 @Override 2453 public String toString() { 2454 synchronized (this) { 2455 return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount; 2456 } 2457 } 2458 } 2459 2460 private final class DisplayBlankerImpl implements DisplayBlanker { 2461 private boolean mBlanked; 2462 2463 @Override 2464 public void blankAllDisplays() { 2465 synchronized (this) { 2466 mBlanked = true; 2467 mDisplayManagerService.blankAllDisplaysFromPowerManager(); 2468 nativeSetInteractive(false); 2469 nativeSetAutoSuspend(true); 2470 } 2471 } 2472 2473 @Override 2474 public void unblankAllDisplays() { 2475 synchronized (this) { 2476 nativeSetAutoSuspend(false); 2477 nativeSetInteractive(true); 2478 mDisplayManagerService.unblankAllDisplaysFromPowerManager(); 2479 mBlanked = false; 2480 } 2481 } 2482 2483 @Override 2484 public String toString() { 2485 synchronized (this) { 2486 return "blanked=" + mBlanked; 2487 } 2488 } 2489 } 2490} 2491