blob: 6f70712db20bb3a4ffee6bb966eb20ccc03afda6 [file] [log] [blame]
/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.server.power;
import com.android.internal.app.IBatteryStats;
import com.android.server.BatteryService;
import com.android.server.EventLogTags;
import com.android.server.LightsService;
import com.android.server.TwilightService;
import com.android.server.Watchdog;
import com.android.server.am.ActivityManagerService;
import com.android.server.display.DisplayManagerService;
import com.android.server.dreams.DreamManagerService;
import android.Manifest;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.database.ContentObserver;
import android.hardware.SensorManager;
import android.hardware.SystemSensorManager;
import android.net.Uri;
import android.os.BatteryManager;
import android.os.Binder;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.IBinder;
import android.os.IPowerManager;
import android.os.Looper;
import android.os.Message;
import android.os.PowerManager;
import android.os.Process;
import android.os.RemoteException;
import android.os.SystemClock;
import android.os.SystemService;
import android.os.UserHandle;
import android.os.WorkSource;
import android.provider.Settings;
import android.util.EventLog;
import android.util.Log;
import android.util.Slog;
import android.util.TimeUtils;
import android.view.WindowManagerPolicy;
import java.io.FileDescriptor;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import libcore.util.Objects;
/**
* The power manager service is responsible for coordinating power management
* functions on the device.
*/
public final class PowerManagerService extends IPowerManager.Stub
implements Watchdog.Monitor {
private static final String TAG = "PowerManagerService";
private static final boolean DEBUG = false;
private static final boolean DEBUG_SPEW = DEBUG && true;
// Message: Sent when a user activity timeout occurs to update the power state.
private static final int MSG_USER_ACTIVITY_TIMEOUT = 1;
// Message: Sent when the device enters or exits a napping or dreaming state.
private static final int MSG_SANDMAN = 2;
// Message: Sent when the screen on blocker is released.
private static final int MSG_SCREEN_ON_BLOCKER_RELEASED = 3;
// Message: Sent to poll whether the boot animation has terminated.
private static final int MSG_CHECK_IF_BOOT_ANIMATION_FINISHED = 4;
// Dirty bit: mWakeLocks changed
private static final int DIRTY_WAKE_LOCKS = 1 << 0;
// Dirty bit: mWakefulness changed
private static final int DIRTY_WAKEFULNESS = 1 << 1;
// Dirty bit: user activity was poked or may have timed out
private static final int DIRTY_USER_ACTIVITY = 1 << 2;
// Dirty bit: actual display power state was updated asynchronously
private static final int DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED = 1 << 3;
// Dirty bit: mBootCompleted changed
private static final int DIRTY_BOOT_COMPLETED = 1 << 4;
// Dirty bit: settings changed
private static final int DIRTY_SETTINGS = 1 << 5;
// Dirty bit: mIsPowered changed
private static final int DIRTY_IS_POWERED = 1 << 6;
// Dirty bit: mStayOn changed
private static final int DIRTY_STAY_ON = 1 << 7;
// Dirty bit: battery state changed
private static final int DIRTY_BATTERY_STATE = 1 << 8;
// Dirty bit: proximity state changed
private static final int DIRTY_PROXIMITY_POSITIVE = 1 << 9;
// Dirty bit: screen on blocker state became held or unheld
private static final int DIRTY_SCREEN_ON_BLOCKER_RELEASED = 1 << 10;
// Dirty bit: dock state changed
private static final int DIRTY_DOCK_STATE = 1 << 11;
// Wakefulness: The device is asleep and can only be awoken by a call to wakeUp().
// The screen should be off or in the process of being turned off by the display controller.
private static final int WAKEFULNESS_ASLEEP = 0;
// Wakefulness: The device is fully awake. It can be put to sleep by a call to goToSleep().
// When the user activity timeout expires, the device may start napping or go to sleep.
private static final int WAKEFULNESS_AWAKE = 1;
// Wakefulness: The device is napping. It is deciding whether to dream or go to sleep
// but hasn't gotten around to it yet. It can be awoken by a call to wakeUp(), which
// ends the nap. User activity may brighten the screen but does not end the nap.
private static final int WAKEFULNESS_NAPPING = 2;
// Wakefulness: The device is dreaming. It can be awoken by a call to wakeUp(),
// which ends the dream. The device goes to sleep when goToSleep() is called, when
// the dream ends or when unplugged.
// User activity may brighten the screen but does not end the dream.
private static final int WAKEFULNESS_DREAMING = 3;
// Summarizes the state of all active wakelocks.
private static final int WAKE_LOCK_CPU = 1 << 0;
private static final int WAKE_LOCK_SCREEN_BRIGHT = 1 << 1;
private static final int WAKE_LOCK_SCREEN_DIM = 1 << 2;
private static final int WAKE_LOCK_BUTTON_BRIGHT = 1 << 3;
private static final int WAKE_LOCK_PROXIMITY_SCREEN_OFF = 1 << 4;
private static final int WAKE_LOCK_STAY_AWAKE = 1 << 5; // only set if already awake
// Summarizes the user activity state.
private static final int USER_ACTIVITY_SCREEN_BRIGHT = 1 << 0;
private static final int USER_ACTIVITY_SCREEN_DIM = 1 << 1;
// Default and minimum screen off timeout in milliseconds.
private static final int DEFAULT_SCREEN_OFF_TIMEOUT = 15 * 1000;
private static final int MINIMUM_SCREEN_OFF_TIMEOUT = 10 * 1000;
// The screen dim duration, in milliseconds.
// This is subtracted from the end of the screen off timeout so the
// minimum screen off timeout should be longer than this.
private static final int SCREEN_DIM_DURATION = 7 * 1000;
// The maximum screen dim time expressed as a ratio relative to the screen
// off timeout. If the screen off timeout is very short then we want the
// dim timeout to also be quite short so that most of the time is spent on.
// Otherwise the user won't get much screen on time before dimming occurs.
private static final float MAXIMUM_SCREEN_DIM_RATIO = 0.2f;
// The name of the boot animation service in init.rc.
private static final String BOOT_ANIMATION_SERVICE = "bootanim";
// Poll interval in milliseconds for watching boot animation finished.
private static final int BOOT_ANIMATION_POLL_INTERVAL = 200;
// If the battery level drops by this percentage and the user activity timeout
// has expired, then assume the device is receiving insufficient current to charge
// effectively and terminate the dream.
private static final int DREAM_BATTERY_LEVEL_DRAIN_CUTOFF = 5;
private Context mContext;
private LightsService mLightsService;
private BatteryService mBatteryService;
private DisplayManagerService mDisplayManagerService;
private IBatteryStats mBatteryStats;
private HandlerThread mHandlerThread;
private PowerManagerHandler mHandler;
private WindowManagerPolicy mPolicy;
private Notifier mNotifier;
private DisplayPowerController mDisplayPowerController;
private WirelessChargerDetector mWirelessChargerDetector;
private SettingsObserver mSettingsObserver;
private DreamManagerService mDreamManager;
private LightsService.Light mAttentionLight;
private final Object mLock = new Object();
// A bitfield that indicates what parts of the power state have
// changed and need to be recalculated.
private int mDirty;
// Indicates whether the device is awake or asleep or somewhere in between.
// This is distinct from the screen power state, which is managed separately.
private int mWakefulness;
// True if MSG_SANDMAN has been scheduled.
private boolean mSandmanScheduled;
// Table of all suspend blockers.
// There should only be a few of these.
private final ArrayList<SuspendBlocker> mSuspendBlockers = new ArrayList<SuspendBlocker>();
// Table of all wake locks acquired by applications.
private final ArrayList<WakeLock> mWakeLocks = new ArrayList<WakeLock>();
// A bitfield that summarizes the state of all active wakelocks.
private int mWakeLockSummary;
// If true, instructs the display controller to wait for the proximity sensor to
// go negative before turning the screen on.
private boolean mRequestWaitForNegativeProximity;
// Timestamp of the last time the device was awoken or put to sleep.
private long mLastWakeTime;
private long mLastSleepTime;
// True if we need to send a wake up or go to sleep finished notification
// when the display is ready.
private boolean mSendWakeUpFinishedNotificationWhenReady;
private boolean mSendGoToSleepFinishedNotificationWhenReady;
// Timestamp of the last call to user activity.
private long mLastUserActivityTime;
private long mLastUserActivityTimeNoChangeLights;
// A bitfield that summarizes the effect of the user activity timer.
// A zero value indicates that the user activity timer has expired.
private int mUserActivitySummary;
// The desired display power state. The actual state may lag behind the
// requested because it is updated asynchronously by the display power controller.
private final DisplayPowerRequest mDisplayPowerRequest = new DisplayPowerRequest();
// The time the screen was last turned off, in elapsedRealtime() timebase.
private long mLastScreenOffEventElapsedRealTime;
// True if the display power state has been fully applied, which means the display
// is actually on or actually off or whatever was requested.
private boolean mDisplayReady;
// The suspend blocker used to keep the CPU alive when an application has acquired
// a wake lock.
private final SuspendBlocker mWakeLockSuspendBlocker;
// True if the wake lock suspend blocker has been acquired.
private boolean mHoldingWakeLockSuspendBlocker;
// The suspend blocker used to keep the CPU alive when the display is on, the
// display is getting ready or there is user activity (in which case the display
// must be on).
private final SuspendBlocker mDisplaySuspendBlocker;
// True if the display suspend blocker has been acquired.
private boolean mHoldingDisplaySuspendBlocker;
// The screen on blocker used to keep the screen from turning on while the lock
// screen is coming up.
private final ScreenOnBlockerImpl mScreenOnBlocker;
// The display blanker used to turn the screen on or off.
private final DisplayBlankerImpl mDisplayBlanker;
// True if systemReady() has been called.
private boolean mSystemReady;
// True if boot completed occurred. We keep the screen on until this happens.
private boolean mBootCompleted;
// True if the device is plugged into a power source.
private boolean mIsPowered;
// The current plug type, such as BatteryManager.BATTERY_PLUGGED_WIRELESS.
private int mPlugType;
// The current battery level percentage.
private int mBatteryLevel;
// The battery level percentage at the time the dream started.
// This is used to terminate a dream and go to sleep if the battery is
// draining faster than it is charging and the user activity timeout has expired.
private int mBatteryLevelWhenDreamStarted;
// The current dock state.
private int mDockState = Intent.EXTRA_DOCK_STATE_UNDOCKED;
// True if the device should wake up when plugged or unplugged.
private boolean mWakeUpWhenPluggedOrUnpluggedConfig;
// True if dreams are supported on this device.
private boolean mDreamsSupportedConfig;
// Default value for dreams enabled
private boolean mDreamsEnabledByDefaultConfig;
// Default value for dreams activate-on-sleep
private boolean mDreamsActivatedOnSleepByDefaultConfig;
// Default value for dreams activate-on-dock
private boolean mDreamsActivatedOnDockByDefaultConfig;
// True if dreams are enabled by the user.
private boolean mDreamsEnabledSetting;
// True if dreams should be activated on sleep.
private boolean mDreamsActivateOnSleepSetting;
// True if dreams should be activated on dock.
private boolean mDreamsActivateOnDockSetting;
// The screen off timeout setting value in milliseconds.
private int mScreenOffTimeoutSetting;
// The maximum allowable screen off timeout according to the device
// administration policy. Overrides other settings.
private int mMaximumScreenOffTimeoutFromDeviceAdmin = Integer.MAX_VALUE;
// The stay on while plugged in setting.
// A bitfield of battery conditions under which to make the screen stay on.
private int mStayOnWhilePluggedInSetting;
// True if the device should stay on.
private boolean mStayOn;
// True if the proximity sensor reads a positive result.
private boolean mProximityPositive;
// Screen brightness setting limits.
private int mScreenBrightnessSettingMinimum;
private int mScreenBrightnessSettingMaximum;
private int mScreenBrightnessSettingDefault;
// The screen brightness setting, from 0 to 255.
// Use -1 if no value has been set.
private int mScreenBrightnessSetting;
// The screen auto-brightness adjustment setting, from -1 to 1.
// Use 0 if there is no adjustment.
private float mScreenAutoBrightnessAdjustmentSetting;
// The screen brightness mode.
// One of the Settings.System.SCREEN_BRIGHTNESS_MODE_* constants.
private int mScreenBrightnessModeSetting;
// The screen brightness setting override from the window manager
// to allow the current foreground activity to override the brightness.
// Use -1 to disable.
private int mScreenBrightnessOverrideFromWindowManager = -1;
// The user activity timeout override from the window manager
// to allow the current foreground activity to override the user activity timeout.
// Use -1 to disable.
private long mUserActivityTimeoutOverrideFromWindowManager = -1;
// The screen brightness setting override from the settings application
// to temporarily adjust the brightness until next updated,
// Use -1 to disable.
private int mTemporaryScreenBrightnessSettingOverride = -1;
// The screen brightness adjustment setting override from the settings
// application to temporarily adjust the auto-brightness adjustment factor
// until next updated, in the range -1..1.
// Use NaN to disable.
private float mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN;
// Time when we last logged a warning about calling userActivity() without permission.
private long mLastWarningAboutUserActivityPermission = Long.MIN_VALUE;
private native void nativeInit();
private static native void nativeShutdown();
private static native void nativeReboot(String reason) throws IOException;
private static native void nativeSetPowerState(boolean screenOn, boolean screenBright);
private static native void nativeAcquireSuspendBlocker(String name);
private static native void nativeReleaseSuspendBlocker(String name);
private static native void nativeSetInteractive(boolean enable);
private static native void nativeSetAutoSuspend(boolean enable);
public PowerManagerService() {
synchronized (mLock) {
mWakeLockSuspendBlocker = createSuspendBlockerLocked("PowerManagerService.WakeLocks");
mDisplaySuspendBlocker = createSuspendBlockerLocked("PowerManagerService.Display");
mDisplaySuspendBlocker.acquire();
mHoldingDisplaySuspendBlocker = true;
mScreenOnBlocker = new ScreenOnBlockerImpl();
mDisplayBlanker = new DisplayBlankerImpl();
mWakefulness = WAKEFULNESS_AWAKE;
}
nativeInit();
nativeSetPowerState(true, true);
}
/**
* Initialize the power manager.
* Must be called before any other functions within the power manager are called.
*/
public void init(Context context, LightsService ls,
ActivityManagerService am, BatteryService bs, IBatteryStats bss,
DisplayManagerService dm) {
mContext = context;
mLightsService = ls;
mBatteryService = bs;
mBatteryStats = bss;
mDisplayManagerService = dm;
mHandlerThread = new HandlerThread(TAG);
mHandlerThread.start();
mHandler = new PowerManagerHandler(mHandlerThread.getLooper());
Watchdog.getInstance().addMonitor(this);
// Forcibly turn the screen on at boot so that it is in a known power state.
// We do this in init() rather than in the constructor because setting the
// screen state requires a call into surface flinger which then needs to call back
// into the activity manager to check permissions. Unfortunately the
// activity manager is not running when the constructor is called, so we
// have to defer setting the screen state until this point.
mDisplayBlanker.unblankAllDisplays();
}
public void setPolicy(WindowManagerPolicy policy) {
synchronized (mLock) {
mPolicy = policy;
}
}
public void systemReady(TwilightService twilight, DreamManagerService dreamManager) {
synchronized (mLock) {
mSystemReady = true;
mDreamManager = dreamManager;
PowerManager pm = (PowerManager)mContext.getSystemService(Context.POWER_SERVICE);
mScreenBrightnessSettingMinimum = pm.getMinimumScreenBrightnessSetting();
mScreenBrightnessSettingMaximum = pm.getMaximumScreenBrightnessSetting();
mScreenBrightnessSettingDefault = pm.getDefaultScreenBrightnessSetting();
SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper());
// The notifier runs on the system server's main looper so as not to interfere
// with the animations and other critical functions of the power manager.
mNotifier = new Notifier(Looper.getMainLooper(), mContext, mBatteryStats,
createSuspendBlockerLocked("PowerManagerService.Broadcasts"),
mScreenOnBlocker, mPolicy);
// The display power controller runs on the power manager service's
// own handler thread to ensure timely operation.
mDisplayPowerController = new DisplayPowerController(mHandler.getLooper(),
mContext, mNotifier, mLightsService, twilight, sensorManager,
mDisplayManagerService, mDisplayBlanker,
mDisplayPowerControllerCallbacks, mHandler);
mWirelessChargerDetector = new WirelessChargerDetector(sensorManager,
createSuspendBlockerLocked("PowerManagerService.WirelessChargerDetector"));
mSettingsObserver = new SettingsObserver(mHandler);
mAttentionLight = mLightsService.getLight(LightsService.LIGHT_ID_ATTENTION);
// Register for broadcasts from other components of the system.
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_BATTERY_CHANGED);
mContext.registerReceiver(new BatteryReceiver(), filter, null, mHandler);
filter = new IntentFilter();
filter.addAction(Intent.ACTION_BOOT_COMPLETED);
mContext.registerReceiver(new BootCompletedReceiver(), filter, null, mHandler);
filter = new IntentFilter();
filter.addAction(Intent.ACTION_DREAMING_STARTED);
filter.addAction(Intent.ACTION_DREAMING_STOPPED);
mContext.registerReceiver(new DreamReceiver(), filter, null, mHandler);
filter = new IntentFilter();
filter.addAction(Intent.ACTION_USER_SWITCHED);
mContext.registerReceiver(new UserSwitchedReceiver(), filter, null, mHandler);
filter = new IntentFilter();
filter.addAction(Intent.ACTION_DOCK_EVENT);
mContext.registerReceiver(new DockReceiver(), filter, null, mHandler);
// Register for settings changes.
final ContentResolver resolver = mContext.getContentResolver();
resolver.registerContentObserver(Settings.Secure.getUriFor(
Settings.Secure.SCREENSAVER_ENABLED),
false, mSettingsObserver, UserHandle.USER_ALL);
resolver.registerContentObserver(Settings.Secure.getUriFor(
Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP),
false, mSettingsObserver, UserHandle.USER_ALL);
resolver.registerContentObserver(Settings.Secure.getUriFor(
Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK),
false, mSettingsObserver, UserHandle.USER_ALL);
resolver.registerContentObserver(Settings.System.getUriFor(
Settings.System.SCREEN_OFF_TIMEOUT),
false, mSettingsObserver, UserHandle.USER_ALL);
resolver.registerContentObserver(Settings.Global.getUriFor(
Settings.Global.STAY_ON_WHILE_PLUGGED_IN),
false, mSettingsObserver, UserHandle.USER_ALL);
resolver.registerContentObserver(Settings.System.getUriFor(
Settings.System.SCREEN_BRIGHTNESS),
false, mSettingsObserver, UserHandle.USER_ALL);
resolver.registerContentObserver(Settings.System.getUriFor(
Settings.System.SCREEN_BRIGHTNESS_MODE),
false, mSettingsObserver, UserHandle.USER_ALL);
// Go.
readConfigurationLocked();
updateSettingsLocked();
mDirty |= DIRTY_BATTERY_STATE;
updatePowerStateLocked();
}
}
private void readConfigurationLocked() {
final Resources resources = mContext.getResources();
mWakeUpWhenPluggedOrUnpluggedConfig = resources.getBoolean(
com.android.internal.R.bool.config_unplugTurnsOnScreen);
mDreamsSupportedConfig = resources.getBoolean(
com.android.internal.R.bool.config_dreamsSupported);
mDreamsEnabledByDefaultConfig = resources.getBoolean(
com.android.internal.R.bool.config_dreamsEnabledByDefault);
mDreamsActivatedOnSleepByDefaultConfig = resources.getBoolean(
com.android.internal.R.bool.config_dreamsActivatedOnSleepByDefault);
mDreamsActivatedOnDockByDefaultConfig = resources.getBoolean(
com.android.internal.R.bool.config_dreamsActivatedOnDockByDefault);
}
private void updateSettingsLocked() {
final ContentResolver resolver = mContext.getContentResolver();
mDreamsEnabledSetting = (Settings.Secure.getIntForUser(resolver,
Settings.Secure.SCREENSAVER_ENABLED,
mDreamsEnabledByDefaultConfig ? 1 : 0,
UserHandle.USER_CURRENT) != 0);
mDreamsActivateOnSleepSetting = (Settings.Secure.getIntForUser(resolver,
Settings.Secure.SCREENSAVER_ACTIVATE_ON_SLEEP,
mDreamsActivatedOnSleepByDefaultConfig ? 1 : 0,
UserHandle.USER_CURRENT) != 0);
mDreamsActivateOnDockSetting = (Settings.Secure.getIntForUser(resolver,
Settings.Secure.SCREENSAVER_ACTIVATE_ON_DOCK,
mDreamsActivatedOnDockByDefaultConfig ? 1 : 0,
UserHandle.USER_CURRENT) != 0);
mScreenOffTimeoutSetting = Settings.System.getIntForUser(resolver,
Settings.System.SCREEN_OFF_TIMEOUT, DEFAULT_SCREEN_OFF_TIMEOUT,
UserHandle.USER_CURRENT);
mStayOnWhilePluggedInSetting = Settings.Global.getInt(resolver,
Settings.Global.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_AC);
final int oldScreenBrightnessSetting = mScreenBrightnessSetting;
mScreenBrightnessSetting = Settings.System.getIntForUser(resolver,
Settings.System.SCREEN_BRIGHTNESS, mScreenBrightnessSettingDefault,
UserHandle.USER_CURRENT);
if (oldScreenBrightnessSetting != mScreenBrightnessSetting) {
mTemporaryScreenBrightnessSettingOverride = -1;
}
final float oldScreenAutoBrightnessAdjustmentSetting =
mScreenAutoBrightnessAdjustmentSetting;
mScreenAutoBrightnessAdjustmentSetting = Settings.System.getFloatForUser(resolver,
Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 0.0f,
UserHandle.USER_CURRENT);
if (oldScreenAutoBrightnessAdjustmentSetting != mScreenAutoBrightnessAdjustmentSetting) {
mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = Float.NaN;
}
mScreenBrightnessModeSetting = Settings.System.getIntForUser(resolver,
Settings.System.SCREEN_BRIGHTNESS_MODE,
Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL, UserHandle.USER_CURRENT);
mDirty |= DIRTY_SETTINGS;
}
private void handleSettingsChangedLocked() {
updateSettingsLocked();
updatePowerStateLocked();
}
@Override // Binder call
public void acquireWakeLock(IBinder lock, int flags, String tag, WorkSource ws) {
if (lock == null) {
throw new IllegalArgumentException("lock must not be null");
}
PowerManager.validateWakeLockParameters(flags, tag);
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null);
if (ws != null && ws.size() != 0) {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.UPDATE_DEVICE_STATS, null);
} else {
ws = null;
}
final int uid = Binder.getCallingUid();
final int pid = Binder.getCallingPid();
final long ident = Binder.clearCallingIdentity();
try {
acquireWakeLockInternal(lock, flags, tag, ws, uid, pid);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private void acquireWakeLockInternal(IBinder lock, int flags, String tag, WorkSource ws,
int uid, int pid) {
synchronized (mLock) {
if (DEBUG_SPEW) {
Slog.d(TAG, "acquireWakeLockInternal: lock=" + Objects.hashCode(lock)
+ ", flags=0x" + Integer.toHexString(flags)
+ ", tag=\"" + tag + "\", ws=" + ws + ", uid=" + uid + ", pid=" + pid);
}
WakeLock wakeLock;
int index = findWakeLockIndexLocked(lock);
if (index >= 0) {
wakeLock = mWakeLocks.get(index);
if (!wakeLock.hasSameProperties(flags, tag, ws, uid, pid)) {
// Update existing wake lock. This shouldn't happen but is harmless.
notifyWakeLockReleasedLocked(wakeLock);
wakeLock.updateProperties(flags, tag, ws, uid, pid);
notifyWakeLockAcquiredLocked(wakeLock);
}
} else {
wakeLock = new WakeLock(lock, flags, tag, ws, uid, pid);
try {
lock.linkToDeath(wakeLock, 0);
} catch (RemoteException ex) {
throw new IllegalArgumentException("Wake lock is already dead.");
}
notifyWakeLockAcquiredLocked(wakeLock);
mWakeLocks.add(wakeLock);
}
applyWakeLockFlagsOnAcquireLocked(wakeLock);
mDirty |= DIRTY_WAKE_LOCKS;
updatePowerStateLocked();
}
}
private static boolean isScreenLock(final WakeLock wakeLock) {
switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) {
case PowerManager.FULL_WAKE_LOCK:
case PowerManager.SCREEN_BRIGHT_WAKE_LOCK:
case PowerManager.SCREEN_DIM_WAKE_LOCK:
return true;
}
return false;
}
private void applyWakeLockFlagsOnAcquireLocked(WakeLock wakeLock) {
if ((wakeLock.mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0 &&
isScreenLock(wakeLock)) {
wakeUpNoUpdateLocked(SystemClock.uptimeMillis());
}
}
@Override // Binder call
public void releaseWakeLock(IBinder lock, int flags) {
if (lock == null) {
throw new IllegalArgumentException("lock must not be null");
}
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null);
final long ident = Binder.clearCallingIdentity();
try {
releaseWakeLockInternal(lock, flags);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private void releaseWakeLockInternal(IBinder lock, int flags) {
synchronized (mLock) {
int index = findWakeLockIndexLocked(lock);
if (index < 0) {
if (DEBUG_SPEW) {
Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock)
+ " [not found], flags=0x" + Integer.toHexString(flags));
}
return;
}
WakeLock wakeLock = mWakeLocks.get(index);
if (DEBUG_SPEW) {
Slog.d(TAG, "releaseWakeLockInternal: lock=" + Objects.hashCode(lock)
+ " [" + wakeLock.mTag + "], flags=0x" + Integer.toHexString(flags));
}
mWakeLocks.remove(index);
notifyWakeLockReleasedLocked(wakeLock);
wakeLock.mLock.unlinkToDeath(wakeLock, 0);
if ((flags & PowerManager.WAIT_FOR_PROXIMITY_NEGATIVE) != 0) {
mRequestWaitForNegativeProximity = true;
}
applyWakeLockFlagsOnReleaseLocked(wakeLock);
mDirty |= DIRTY_WAKE_LOCKS;
updatePowerStateLocked();
}
}
private void handleWakeLockDeath(WakeLock wakeLock) {
synchronized (mLock) {
if (DEBUG_SPEW) {
Slog.d(TAG, "handleWakeLockDeath: lock=" + Objects.hashCode(wakeLock.mLock)
+ " [" + wakeLock.mTag + "]");
}
int index = mWakeLocks.indexOf(wakeLock);
if (index < 0) {
return;
}
mWakeLocks.remove(index);
notifyWakeLockReleasedLocked(wakeLock);
applyWakeLockFlagsOnReleaseLocked(wakeLock);
mDirty |= DIRTY_WAKE_LOCKS;
updatePowerStateLocked();
}
}
private void applyWakeLockFlagsOnReleaseLocked(WakeLock wakeLock) {
if ((wakeLock.mFlags & PowerManager.ON_AFTER_RELEASE) != 0) {
userActivityNoUpdateLocked(SystemClock.uptimeMillis(),
PowerManager.USER_ACTIVITY_EVENT_OTHER,
PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS,
wakeLock.mOwnerUid);
}
}
@Override // Binder call
public void updateWakeLockWorkSource(IBinder lock, WorkSource ws) {
if (lock == null) {
throw new IllegalArgumentException("lock must not be null");
}
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WAKE_LOCK, null);
if (ws != null && ws.size() != 0) {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.UPDATE_DEVICE_STATS, null);
} else {
ws = null;
}
final long ident = Binder.clearCallingIdentity();
try {
updateWakeLockWorkSourceInternal(lock, ws);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private void updateWakeLockWorkSourceInternal(IBinder lock, WorkSource ws) {
synchronized (mLock) {
int index = findWakeLockIndexLocked(lock);
if (index < 0) {
if (DEBUG_SPEW) {
Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock)
+ " [not found], ws=" + ws);
}
throw new IllegalArgumentException("Wake lock not active");
}
WakeLock wakeLock = mWakeLocks.get(index);
if (DEBUG_SPEW) {
Slog.d(TAG, "updateWakeLockWorkSourceInternal: lock=" + Objects.hashCode(lock)
+ " [" + wakeLock.mTag + "], ws=" + ws);
}
if (!wakeLock.hasSameWorkSource(ws)) {
notifyWakeLockReleasedLocked(wakeLock);
wakeLock.updateWorkSource(ws);
notifyWakeLockAcquiredLocked(wakeLock);
}
}
}
private int findWakeLockIndexLocked(IBinder lock) {
final int count = mWakeLocks.size();
for (int i = 0; i < count; i++) {
if (mWakeLocks.get(i).mLock == lock) {
return i;
}
}
return -1;
}
private void notifyWakeLockAcquiredLocked(WakeLock wakeLock) {
if (mSystemReady) {
mNotifier.onWakeLockAcquired(wakeLock.mFlags, wakeLock.mTag,
wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource);
}
}
private void notifyWakeLockReleasedLocked(WakeLock wakeLock) {
if (mSystemReady) {
mNotifier.onWakeLockReleased(wakeLock.mFlags, wakeLock.mTag,
wakeLock.mOwnerUid, wakeLock.mOwnerPid, wakeLock.mWorkSource);
}
}
@Override // Binder call
public boolean isWakeLockLevelSupported(int level) {
final long ident = Binder.clearCallingIdentity();
try {
return isWakeLockLevelSupportedInternal(level);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private boolean isWakeLockLevelSupportedInternal(int level) {
synchronized (mLock) {
switch (level) {
case PowerManager.PARTIAL_WAKE_LOCK:
case PowerManager.SCREEN_DIM_WAKE_LOCK:
case PowerManager.SCREEN_BRIGHT_WAKE_LOCK:
case PowerManager.FULL_WAKE_LOCK:
return true;
case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK:
return mSystemReady && mDisplayPowerController.isProximitySensorAvailable();
default:
return false;
}
}
}
@Override // Binder call
public void userActivity(long eventTime, int event, int flags) {
final long now = SystemClock.uptimeMillis();
if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER)
!= PackageManager.PERMISSION_GRANTED) {
// Once upon a time applications could call userActivity().
// Now we require the DEVICE_POWER permission. Log a warning and ignore the
// request instead of throwing a SecurityException so we don't break old apps.
synchronized (mLock) {
if (now >= mLastWarningAboutUserActivityPermission + (5 * 60 * 1000)) {
mLastWarningAboutUserActivityPermission = now;
Slog.w(TAG, "Ignoring call to PowerManager.userActivity() because the "
+ "caller does not have DEVICE_POWER permission. "
+ "Please fix your app! "
+ " pid=" + Binder.getCallingPid()
+ " uid=" + Binder.getCallingUid());
}
}
return;
}
if (eventTime > SystemClock.uptimeMillis()) {
throw new IllegalArgumentException("event time must not be in the future");
}
final int uid = Binder.getCallingUid();
final long ident = Binder.clearCallingIdentity();
try {
userActivityInternal(eventTime, event, flags, uid);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
// Called from native code.
private void userActivityFromNative(long eventTime, int event, int flags) {
userActivityInternal(eventTime, event, flags, Process.SYSTEM_UID);
}
private void userActivityInternal(long eventTime, int event, int flags, int uid) {
synchronized (mLock) {
if (userActivityNoUpdateLocked(eventTime, event, flags, uid)) {
updatePowerStateLocked();
}
}
}
private boolean userActivityNoUpdateLocked(long eventTime, int event, int flags, int uid) {
if (DEBUG_SPEW) {
Slog.d(TAG, "userActivityNoUpdateLocked: eventTime=" + eventTime
+ ", event=" + event + ", flags=0x" + Integer.toHexString(flags)
+ ", uid=" + uid);
}
if (eventTime < mLastSleepTime || eventTime < mLastWakeTime
|| mWakefulness == WAKEFULNESS_ASLEEP || !mBootCompleted || !mSystemReady) {
return false;
}
mNotifier.onUserActivity(event, uid);
if ((flags & PowerManager.USER_ACTIVITY_FLAG_NO_CHANGE_LIGHTS) != 0) {
if (eventTime > mLastUserActivityTimeNoChangeLights
&& eventTime > mLastUserActivityTime) {
mLastUserActivityTimeNoChangeLights = eventTime;
mDirty |= DIRTY_USER_ACTIVITY;
return true;
}
} else {
if (eventTime > mLastUserActivityTime) {
mLastUserActivityTime = eventTime;
mDirty |= DIRTY_USER_ACTIVITY;
return true;
}
}
return false;
}
@Override // Binder call
public void wakeUp(long eventTime) {
if (eventTime > SystemClock.uptimeMillis()) {
throw new IllegalArgumentException("event time must not be in the future");
}
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null);
final long ident = Binder.clearCallingIdentity();
try {
wakeUpInternal(eventTime);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
// Called from native code.
private void wakeUpFromNative(long eventTime) {
wakeUpInternal(eventTime);
}
private void wakeUpInternal(long eventTime) {
synchronized (mLock) {
if (wakeUpNoUpdateLocked(eventTime)) {
updatePowerStateLocked();
}
}
}
private boolean wakeUpNoUpdateLocked(long eventTime) {
if (DEBUG_SPEW) {
Slog.d(TAG, "wakeUpNoUpdateLocked: eventTime=" + eventTime);
}
if (eventTime < mLastSleepTime || mWakefulness == WAKEFULNESS_AWAKE
|| !mBootCompleted || !mSystemReady) {
return false;
}
switch (mWakefulness) {
case WAKEFULNESS_ASLEEP:
Slog.i(TAG, "Waking up from sleep...");
sendPendingNotificationsLocked();
mNotifier.onWakeUpStarted();
mSendWakeUpFinishedNotificationWhenReady = true;
break;
case WAKEFULNESS_DREAMING:
Slog.i(TAG, "Waking up from dream...");
break;
case WAKEFULNESS_NAPPING:
Slog.i(TAG, "Waking up from nap...");
break;
}
mLastWakeTime = eventTime;
mWakefulness = WAKEFULNESS_AWAKE;
mDirty |= DIRTY_WAKEFULNESS;
userActivityNoUpdateLocked(
eventTime, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID);
return true;
}
@Override // Binder call
public void goToSleep(long eventTime, int reason) {
if (eventTime > SystemClock.uptimeMillis()) {
throw new IllegalArgumentException("event time must not be in the future");
}
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null);
final long ident = Binder.clearCallingIdentity();
try {
goToSleepInternal(eventTime, reason);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
// Called from native code.
private void goToSleepFromNative(long eventTime, int reason) {
goToSleepInternal(eventTime, reason);
}
private void goToSleepInternal(long eventTime, int reason) {
synchronized (mLock) {
if (goToSleepNoUpdateLocked(eventTime, reason)) {
updatePowerStateLocked();
}
}
}
private boolean goToSleepNoUpdateLocked(long eventTime, int reason) {
if (DEBUG_SPEW) {
Slog.d(TAG, "goToSleepNoUpdateLocked: eventTime=" + eventTime + ", reason=" + reason);
}
if (eventTime < mLastWakeTime || mWakefulness == WAKEFULNESS_ASLEEP
|| !mBootCompleted || !mSystemReady) {
return false;
}
switch (reason) {
case PowerManager.GO_TO_SLEEP_REASON_DEVICE_ADMIN:
Slog.i(TAG, "Going to sleep due to device administration policy...");
break;
case PowerManager.GO_TO_SLEEP_REASON_TIMEOUT:
Slog.i(TAG, "Going to sleep due to screen timeout...");
break;
default:
Slog.i(TAG, "Going to sleep by user request...");
reason = PowerManager.GO_TO_SLEEP_REASON_USER;
break;
}
sendPendingNotificationsLocked();
mNotifier.onGoToSleepStarted(reason);
mSendGoToSleepFinishedNotificationWhenReady = true;
mLastSleepTime = eventTime;
mDirty |= DIRTY_WAKEFULNESS;
mWakefulness = WAKEFULNESS_ASLEEP;
// Report the number of wake locks that will be cleared by going to sleep.
int numWakeLocksCleared = 0;
final int numWakeLocks = mWakeLocks.size();
for (int i = 0; i < numWakeLocks; i++) {
final WakeLock wakeLock = mWakeLocks.get(i);
switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) {
case PowerManager.FULL_WAKE_LOCK:
case PowerManager.SCREEN_BRIGHT_WAKE_LOCK:
case PowerManager.SCREEN_DIM_WAKE_LOCK:
numWakeLocksCleared += 1;
break;
}
}
EventLog.writeEvent(EventLogTags.POWER_SLEEP_REQUESTED, numWakeLocksCleared);
return true;
}
@Override // Binder call
public void nap(long eventTime) {
if (eventTime > SystemClock.uptimeMillis()) {
throw new IllegalArgumentException("event time must not be in the future");
}
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null);
final long ident = Binder.clearCallingIdentity();
try {
napInternal(eventTime);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private void napInternal(long eventTime) {
synchronized (mLock) {
if (napNoUpdateLocked(eventTime)) {
updatePowerStateLocked();
}
}
}
private boolean napNoUpdateLocked(long eventTime) {
if (DEBUG_SPEW) {
Slog.d(TAG, "napNoUpdateLocked: eventTime=" + eventTime);
}
if (eventTime < mLastWakeTime || mWakefulness != WAKEFULNESS_AWAKE
|| !mBootCompleted || !mSystemReady) {
return false;
}
Slog.i(TAG, "Nap time...");
mDirty |= DIRTY_WAKEFULNESS;
mWakefulness = WAKEFULNESS_NAPPING;
return true;
}
/**
* Updates the global power state based on dirty bits recorded in mDirty.
*
* This is the main function that performs power state transitions.
* We centralize them here so that we can recompute the power state completely
* each time something important changes, and ensure that we do it the same
* way each time. The point is to gather all of the transition logic here.
*/
private void updatePowerStateLocked() {
if (!mSystemReady || mDirty == 0) {
return;
}
// Phase 0: Basic state updates.
updateIsPoweredLocked(mDirty);
updateStayOnLocked(mDirty);
// Phase 1: Update wakefulness.
// Loop because the wake lock and user activity computations are influenced
// by changes in wakefulness.
final long now = SystemClock.uptimeMillis();
int dirtyPhase2 = 0;
for (;;) {
int dirtyPhase1 = mDirty;
dirtyPhase2 |= dirtyPhase1;
mDirty = 0;
updateWakeLockSummaryLocked(dirtyPhase1);
updateUserActivitySummaryLocked(now, dirtyPhase1);
if (!updateWakefulnessLocked(dirtyPhase1)) {
break;
}
}
// Phase 2: Update dreams and display power state.
updateDreamLocked(dirtyPhase2);
updateDisplayPowerStateLocked(dirtyPhase2);
// Phase 3: Send notifications, if needed.
if (mDisplayReady) {
sendPendingNotificationsLocked();
}
// Phase 4: Update suspend blocker.
// Because we might release the last suspend blocker here, we need to make sure
// we finished everything else first!
updateSuspendBlockerLocked();
}
private void sendPendingNotificationsLocked() {
if (mSendWakeUpFinishedNotificationWhenReady) {
mSendWakeUpFinishedNotificationWhenReady = false;
mNotifier.onWakeUpFinished();
}
if (mSendGoToSleepFinishedNotificationWhenReady) {
mSendGoToSleepFinishedNotificationWhenReady = false;
mNotifier.onGoToSleepFinished();
}
}
/**
* Updates the value of mIsPowered.
* Sets DIRTY_IS_POWERED if a change occurred.
*/
private void updateIsPoweredLocked(int dirty) {
if ((dirty & DIRTY_BATTERY_STATE) != 0) {
final boolean wasPowered = mIsPowered;
final int oldPlugType = mPlugType;
mIsPowered = mBatteryService.isPowered(BatteryManager.BATTERY_PLUGGED_ANY);
mPlugType = mBatteryService.getPlugType();
mBatteryLevel = mBatteryService.getBatteryLevel();
if (DEBUG) {
Slog.d(TAG, "updateIsPoweredLocked: wasPowered=" + wasPowered
+ ", mIsPowered=" + mIsPowered
+ ", oldPlugType=" + oldPlugType
+ ", mPlugType=" + mPlugType
+ ", mBatteryLevel=" + mBatteryLevel);
}
if (wasPowered != mIsPowered || oldPlugType != mPlugType) {
mDirty |= DIRTY_IS_POWERED;
// Update wireless dock detection state.
final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update(
mIsPowered, mPlugType, mBatteryLevel);
// Treat plugging and unplugging the devices as a user activity.
// Users find it disconcerting when they plug or unplug the device
// and it shuts off right away.
// Some devices also wake the device when plugged or unplugged because
// they don't have a charging LED.
final long now = SystemClock.uptimeMillis();
if (shouldWakeUpWhenPluggedOrUnpluggedLocked(wasPowered, oldPlugType,
dockedOnWirelessCharger)) {
wakeUpNoUpdateLocked(now);
}
userActivityNoUpdateLocked(
now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID);
// Tell the notifier whether wireless charging has started so that
// it can provide feedback to the user.
if (dockedOnWirelessCharger) {
mNotifier.onWirelessChargingStarted();
}
}
}
}
private boolean shouldWakeUpWhenPluggedOrUnpluggedLocked(
boolean wasPowered, int oldPlugType, boolean dockedOnWirelessCharger) {
// Don't wake when powered unless configured to do so.
if (!mWakeUpWhenPluggedOrUnpluggedConfig) {
return false;
}
// Don't wake when undocked from wireless charger.
// See WirelessChargerDetector for justification.
if (wasPowered && !mIsPowered
&& oldPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) {
return false;
}
// Don't wake when docked on wireless charger unless we are certain of it.
// See WirelessChargerDetector for justification.
if (!wasPowered && mIsPowered
&& mPlugType == BatteryManager.BATTERY_PLUGGED_WIRELESS
&& !dockedOnWirelessCharger) {
return false;
}
// If already dreaming and becoming powered, then don't wake.
if (mIsPowered && (mWakefulness == WAKEFULNESS_NAPPING
|| mWakefulness == WAKEFULNESS_DREAMING)) {
return false;
}
// Otherwise wake up!
return true;
}
/**
* Updates the value of mStayOn.
* Sets DIRTY_STAY_ON if a change occurred.
*/
private void updateStayOnLocked(int dirty) {
if ((dirty & (DIRTY_BATTERY_STATE | DIRTY_SETTINGS)) != 0) {
final boolean wasStayOn = mStayOn;
if (mStayOnWhilePluggedInSetting != 0
&& !isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) {
mStayOn = mBatteryService.isPowered(mStayOnWhilePluggedInSetting);
} else {
mStayOn = false;
}
if (mStayOn != wasStayOn) {
mDirty |= DIRTY_STAY_ON;
}
}
}
/**
* Updates the value of mWakeLockSummary to summarize the state of all active wake locks.
* Note that most wake-locks are ignored when the system is asleep.
*
* This function must have no other side-effects.
*/
private void updateWakeLockSummaryLocked(int dirty) {
if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_WAKEFULNESS)) != 0) {
mWakeLockSummary = 0;
final int numWakeLocks = mWakeLocks.size();
for (int i = 0; i < numWakeLocks; i++) {
final WakeLock wakeLock = mWakeLocks.get(i);
switch (wakeLock.mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) {
case PowerManager.PARTIAL_WAKE_LOCK:
mWakeLockSummary |= WAKE_LOCK_CPU;
break;
case PowerManager.FULL_WAKE_LOCK:
if (mWakefulness != WAKEFULNESS_ASLEEP) {
mWakeLockSummary |= WAKE_LOCK_CPU
| WAKE_LOCK_SCREEN_BRIGHT | WAKE_LOCK_BUTTON_BRIGHT;
if (mWakefulness == WAKEFULNESS_AWAKE) {
mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE;
}
}
break;
case PowerManager.SCREEN_BRIGHT_WAKE_LOCK:
if (mWakefulness != WAKEFULNESS_ASLEEP) {
mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_SCREEN_BRIGHT;
if (mWakefulness == WAKEFULNESS_AWAKE) {
mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE;
}
}
break;
case PowerManager.SCREEN_DIM_WAKE_LOCK:
if (mWakefulness != WAKEFULNESS_ASLEEP) {
mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_SCREEN_DIM;
if (mWakefulness == WAKEFULNESS_AWAKE) {
mWakeLockSummary |= WAKE_LOCK_STAY_AWAKE;
}
}
break;
case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK:
if (mWakefulness != WAKEFULNESS_ASLEEP) {
mWakeLockSummary |= WAKE_LOCK_CPU | WAKE_LOCK_PROXIMITY_SCREEN_OFF;
}
break;
}
}
if (DEBUG_SPEW) {
Slog.d(TAG, "updateWakeLockSummaryLocked: mWakefulness="
+ wakefulnessToString(mWakefulness)
+ ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary));
}
}
}
/**
* Updates the value of mUserActivitySummary to summarize the user requested
* state of the system such as whether the screen should be bright or dim.
* Note that user activity is ignored when the system is asleep.
*
* This function must have no other side-effects.
*/
private void updateUserActivitySummaryLocked(long now, int dirty) {
// Update the status of the user activity timeout timer.
if ((dirty & (DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) {
mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT);
long nextTimeout = 0;
if (mWakefulness != WAKEFULNESS_ASLEEP) {
final int screenOffTimeout = getScreenOffTimeoutLocked();
final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout);
mUserActivitySummary = 0;
if (mLastUserActivityTime >= mLastWakeTime) {
nextTimeout = mLastUserActivityTime
+ screenOffTimeout - screenDimDuration;
if (now < nextTimeout) {
mUserActivitySummary |= USER_ACTIVITY_SCREEN_BRIGHT;
} else {
nextTimeout = mLastUserActivityTime + screenOffTimeout;
if (now < nextTimeout) {
mUserActivitySummary |= USER_ACTIVITY_SCREEN_DIM;
}
}
}
if (mUserActivitySummary == 0
&& mLastUserActivityTimeNoChangeLights >= mLastWakeTime) {
nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout;
if (now < nextTimeout
&& mDisplayPowerRequest.screenState
!= DisplayPowerRequest.SCREEN_STATE_OFF) {
mUserActivitySummary = mDisplayPowerRequest.screenState
== DisplayPowerRequest.SCREEN_STATE_BRIGHT ?
USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM;
}
}
if (mUserActivitySummary != 0) {
Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT);
msg.setAsynchronous(true);
mHandler.sendMessageAtTime(msg, nextTimeout);
}
} else {
mUserActivitySummary = 0;
}
if (DEBUG_SPEW) {
Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness="
+ wakefulnessToString(mWakefulness)
+ ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)
+ ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout));
}
}
}
/**
* Called when a user activity timeout has occurred.
* Simply indicates that something about user activity has changed so that the new
* state can be recomputed when the power state is updated.
*
* This function must have no other side-effects besides setting the dirty
* bit and calling update power state. Wakefulness transitions are handled elsewhere.
*/
private void handleUserActivityTimeout() { // runs on handler thread
synchronized (mLock) {
if (DEBUG_SPEW) {
Slog.d(TAG, "handleUserActivityTimeout");
}
mDirty |= DIRTY_USER_ACTIVITY;
updatePowerStateLocked();
}
}
private int getScreenOffTimeoutLocked() {
int timeout = mScreenOffTimeoutSetting;
if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) {
timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin);
}
if (mUserActivityTimeoutOverrideFromWindowManager >= 0) {
timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager);
}
return Math.max(timeout, MINIMUM_SCREEN_OFF_TIMEOUT);
}
private int getScreenDimDurationLocked(int screenOffTimeout) {
return Math.min(SCREEN_DIM_DURATION,
(int)(screenOffTimeout * MAXIMUM_SCREEN_DIM_RATIO));
}
/**
* Updates the wakefulness of the device.
*
* This is the function that decides whether the device should start napping
* based on the current wake locks and user activity state. It may modify mDirty
* if the wakefulness changes.
*
* Returns true if the wakefulness changed and we need to restart power state calculation.
*/
private boolean updateWakefulnessLocked(int dirty) {
boolean changed = false;
if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED
| DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE
| DIRTY_DOCK_STATE)) != 0) {
if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) {
if (DEBUG_SPEW) {
Slog.d(TAG, "updateWakefulnessLocked: Bed time...");
}
final long time = SystemClock.uptimeMillis();
if (shouldNapAtBedTimeLocked()) {
changed = napNoUpdateLocked(time);
} else {
changed = goToSleepNoUpdateLocked(time,
PowerManager.GO_TO_SLEEP_REASON_TIMEOUT);
}
}
}
return changed;
}
/**
* Returns true if the device should automatically nap and start dreaming when the user
* activity timeout has expired and it's bedtime.
*/
private boolean shouldNapAtBedTimeLocked() {
return mDreamsActivateOnSleepSetting
|| (mDreamsActivateOnDockSetting
&& mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED);
}
/**
* Returns true if the device should go to sleep now.
* Also used when exiting a dream to determine whether we should go back
* to being fully awake or else go to sleep for good.
*/
private boolean isItBedTimeYetLocked() {
return mBootCompleted && !isBeingKeptAwakeLocked();
}
/**
* Returns true if the device is being kept awake by a wake lock, user activity
* or the stay on while powered setting.
*/
private boolean isBeingKeptAwakeLocked() {
return mStayOn
|| mProximityPositive
|| (mWakeLockSummary & WAKE_LOCK_STAY_AWAKE) != 0
|| (mUserActivitySummary & (USER_ACTIVITY_SCREEN_BRIGHT
| USER_ACTIVITY_SCREEN_DIM)) != 0;
}
/**
* Determines whether to post a message to the sandman to update the dream state.
*/
private void updateDreamLocked(int dirty) {
if ((dirty & (DIRTY_WAKEFULNESS
| DIRTY_USER_ACTIVITY
| DIRTY_WAKE_LOCKS
| DIRTY_BOOT_COMPLETED
| DIRTY_SETTINGS
| DIRTY_IS_POWERED
| DIRTY_STAY_ON
| DIRTY_PROXIMITY_POSITIVE
| DIRTY_BATTERY_STATE)) != 0) {
scheduleSandmanLocked();
}
}
private void scheduleSandmanLocked() {
if (!mSandmanScheduled) {
mSandmanScheduled = true;
Message msg = mHandler.obtainMessage(MSG_SANDMAN);
msg.setAsynchronous(true);
mHandler.sendMessage(msg);
}
}
/**
* Called when the device enters or exits a napping or dreaming state.
*
* We do this asynchronously because we must call out of the power manager to start
* the dream and we don't want to hold our lock while doing so. There is a risk that
* the device will wake or go to sleep in the meantime so we have to handle that case.
*/
private void handleSandman() { // runs on handler thread
// Handle preconditions.
boolean startDreaming = false;
synchronized (mLock) {
mSandmanScheduled = false;
boolean canDream = canDreamLocked();
if (DEBUG_SPEW) {
Slog.d(TAG, "handleSandman: canDream=" + canDream
+ ", mWakefulness=" + wakefulnessToString(mWakefulness));
}
if (canDream && mWakefulness == WAKEFULNESS_NAPPING) {
startDreaming = true;
}
}
// Start dreaming if needed.
// We only control the dream on the handler thread, so we don't need to worry about
// concurrent attempts to start or stop the dream.
boolean isDreaming = false;
if (mDreamManager != null) {
if (startDreaming) {
mDreamManager.startDream();
}
isDreaming = mDreamManager.isDreaming();
}
// Update dream state.
// We might need to stop the dream again if the preconditions changed.
boolean continueDreaming = false;
synchronized (mLock) {
if (isDreaming && canDreamLocked()) {
if (mWakefulness == WAKEFULNESS_NAPPING) {
mWakefulness = WAKEFULNESS_DREAMING;
mDirty |= DIRTY_WAKEFULNESS;
mBatteryLevelWhenDreamStarted = mBatteryLevel;
updatePowerStateLocked();
continueDreaming = true;
} else if (mWakefulness == WAKEFULNESS_DREAMING) {
if (!isBeingKeptAwakeLocked()
&& mBatteryLevel < mBatteryLevelWhenDreamStarted
- DREAM_BATTERY_LEVEL_DRAIN_CUTOFF) {
// If the user activity timeout expired and the battery appears
// to be draining faster than it is charging then stop dreaming
// and go to sleep.
Slog.i(TAG, "Stopping dream because the battery appears to "
+ "be draining faster than it is charging. "
+ "Battery level when dream started: "
+ mBatteryLevelWhenDreamStarted + "%. "
+ "Battery level now: " + mBatteryLevel + "%.");
} else {
continueDreaming = true;
}
}
}
if (!continueDreaming) {
handleDreamFinishedLocked();
}
}
// Stop dreaming if needed.
// It's possible that something else changed to make us need to start the dream again.
// If so, then the power manager will have posted another message to the handler
// to take care of it later.
if (mDreamManager != null) {
if (!continueDreaming) {
mDreamManager.stopDream();
}
}
}
/**
* Returns true if the device is allowed to dream in its current state
* assuming that it is currently napping or dreaming.
*/
private boolean canDreamLocked() {
return mDreamsSupportedConfig
&& mDreamsEnabledSetting
&& mDisplayPowerRequest.screenState != DisplayPowerRequest.SCREEN_STATE_OFF
&& mBootCompleted
&& (mIsPowered || isBeingKeptAwakeLocked());
}
/**
* Called when a dream is ending to figure out what to do next.
*/
private void handleDreamFinishedLocked() {
if (mWakefulness == WAKEFULNESS_NAPPING
|| mWakefulness == WAKEFULNESS_DREAMING) {
if (isItBedTimeYetLocked()) {
goToSleepNoUpdateLocked(SystemClock.uptimeMillis(),
PowerManager.GO_TO_SLEEP_REASON_TIMEOUT);
updatePowerStateLocked();
} else {
wakeUpNoUpdateLocked(SystemClock.uptimeMillis());
updatePowerStateLocked();
}
}
}
private void handleScreenOnBlockerReleased() {
synchronized (mLock) {
mDirty |= DIRTY_SCREEN_ON_BLOCKER_RELEASED;
updatePowerStateLocked();
}
}
/**
* Updates the display power state asynchronously.
* When the update is finished, mDisplayReady will be set to true. The display
* controller posts a message to tell us when the actual display power state
* has been updated so we come back here to double-check and finish up.
*
* This function recalculates the display power state each time.
*/
private void updateDisplayPowerStateLocked(int dirty) {
if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_WAKEFULNESS
| DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED | DIRTY_BOOT_COMPLETED
| DIRTY_SETTINGS | DIRTY_SCREEN_ON_BLOCKER_RELEASED)) != 0) {
int newScreenState = getDesiredScreenPowerStateLocked();
if (newScreenState != mDisplayPowerRequest.screenState) {
if (newScreenState == DisplayPowerRequest.SCREEN_STATE_OFF
&& mDisplayPowerRequest.screenState
!= DisplayPowerRequest.SCREEN_STATE_OFF) {
mLastScreenOffEventElapsedRealTime = SystemClock.elapsedRealtime();
}
mDisplayPowerRequest.screenState = newScreenState;
nativeSetPowerState(
newScreenState != DisplayPowerRequest.SCREEN_STATE_OFF,
newScreenState == DisplayPowerRequest.SCREEN_STATE_BRIGHT);
}
int screenBrightness = mScreenBrightnessSettingDefault;
float screenAutoBrightnessAdjustment = 0.0f;
boolean autoBrightness = (mScreenBrightnessModeSetting ==
Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC);
if (isValidBrightness(mScreenBrightnessOverrideFromWindowManager)) {
screenBrightness = mScreenBrightnessOverrideFromWindowManager;
autoBrightness = false;
} else if (isValidBrightness(mTemporaryScreenBrightnessSettingOverride)) {
screenBrightness = mTemporaryScreenBrightnessSettingOverride;
} else if (isValidBrightness(mScreenBrightnessSetting)) {
screenBrightness = mScreenBrightnessSetting;
}
if (autoBrightness) {
screenBrightness = mScreenBrightnessSettingDefault;
if (isValidAutoBrightnessAdjustment(
mTemporaryScreenAutoBrightnessAdjustmentSettingOverride)) {
screenAutoBrightnessAdjustment =
mTemporaryScreenAutoBrightnessAdjustmentSettingOverride;
} else if (isValidAutoBrightnessAdjustment(
mScreenAutoBrightnessAdjustmentSetting)) {
screenAutoBrightnessAdjustment = mScreenAutoBrightnessAdjustmentSetting;
}
}
screenBrightness = Math.max(Math.min(screenBrightness,
mScreenBrightnessSettingMaximum), mScreenBrightnessSettingMinimum);
screenAutoBrightnessAdjustment = Math.max(Math.min(
screenAutoBrightnessAdjustment, 1.0f), -1.0f);
mDisplayPowerRequest.screenBrightness = screenBrightness;
mDisplayPowerRequest.screenAutoBrightnessAdjustment =
screenAutoBrightnessAdjustment;
mDisplayPowerRequest.useAutoBrightness = autoBrightness;
mDisplayPowerRequest.useProximitySensor = shouldUseProximitySensorLocked();
mDisplayPowerRequest.blockScreenOn = mScreenOnBlocker.isHeld();
mDisplayReady = mDisplayPowerController.requestPowerState(mDisplayPowerRequest,
mRequestWaitForNegativeProximity);
mRequestWaitForNegativeProximity = false;
if (DEBUG_SPEW) {
Slog.d(TAG, "updateScreenStateLocked: mDisplayReady=" + mDisplayReady
+ ", newScreenState=" + newScreenState
+ ", mWakefulness=" + mWakefulness
+ ", mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary)
+ ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)
+ ", mBootCompleted=" + mBootCompleted);
}
}
}
private static boolean isValidBrightness(int value) {
return value >= 0 && value <= 255;
}
private static boolean isValidAutoBrightnessAdjustment(float value) {
// Handles NaN by always returning false.
return value >= -1.0f && value <= 1.0f;
}
private int getDesiredScreenPowerStateLocked() {
if (mWakefulness == WAKEFULNESS_ASLEEP) {
return DisplayPowerRequest.SCREEN_STATE_OFF;
}
if ((mWakeLockSummary & WAKE_LOCK_SCREEN_BRIGHT) != 0
|| (mUserActivitySummary & USER_ACTIVITY_SCREEN_BRIGHT) != 0
|| !mBootCompleted) {
return DisplayPowerRequest.SCREEN_STATE_BRIGHT;
}
return DisplayPowerRequest.SCREEN_STATE_DIM;
}
private final DisplayPowerController.Callbacks mDisplayPowerControllerCallbacks =
new DisplayPowerController.Callbacks() {
@Override
public void onStateChanged() {
synchronized (mLock) {
mDirty |= DIRTY_ACTUAL_DISPLAY_POWER_STATE_UPDATED;
updatePowerStateLocked();
}
}
@Override
public void onProximityPositive() {
synchronized (mLock) {
mProximityPositive = true;
mDirty |= DIRTY_PROXIMITY_POSITIVE;
updatePowerStateLocked();
}
}
@Override
public void onProximityNegative() {
synchronized (mLock) {
mProximityPositive = false;
mDirty |= DIRTY_PROXIMITY_POSITIVE;
userActivityNoUpdateLocked(SystemClock.uptimeMillis(),
PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID);
updatePowerStateLocked();
}
}
};
private boolean shouldUseProximitySensorLocked() {
return (mWakeLockSummary & WAKE_LOCK_PROXIMITY_SCREEN_OFF) != 0;
}
/**
* Updates the suspend blocker that keeps the CPU alive.
*
* This function must have no other side-effects.
*/
private void updateSuspendBlockerLocked() {
final boolean needWakeLockSuspendBlocker = (mWakeLockSummary != 0);
final boolean needDisplaySuspendBlocker = (mUserActivitySummary != 0
|| mDisplayPowerRequest.screenState != DisplayPowerRequest.SCREEN_STATE_OFF
|| !mDisplayReady || !mBootCompleted);
// First acquire suspend blockers if needed.
if (needWakeLockSuspendBlocker && !mHoldingWakeLockSuspendBlocker) {
mWakeLockSuspendBlocker.acquire();
mHoldingWakeLockSuspendBlocker = true;
}
if (needDisplaySuspendBlocker && !mHoldingDisplaySuspendBlocker) {
mDisplaySuspendBlocker.acquire();
mHoldingDisplaySuspendBlocker = true;
}
// Then release suspend blockers if needed.
if (!needWakeLockSuspendBlocker && mHoldingWakeLockSuspendBlocker) {
mWakeLockSuspendBlocker.release();
mHoldingWakeLockSuspendBlocker = false;
}
if (!needDisplaySuspendBlocker && mHoldingDisplaySuspendBlocker) {
mDisplaySuspendBlocker.release();
mHoldingDisplaySuspendBlocker = false;
}
}
@Override // Binder call
public boolean isScreenOn() {
final long ident = Binder.clearCallingIdentity();
try {
return isScreenOnInternal();
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private boolean isScreenOnInternal() {
synchronized (mLock) {
return !mSystemReady
|| mDisplayPowerRequest.screenState != DisplayPowerRequest.SCREEN_STATE_OFF;
}
}
private void handleBatteryStateChangedLocked() {
mDirty |= DIRTY_BATTERY_STATE;
updatePowerStateLocked();
}
private void startWatchingForBootAnimationFinished() {
mHandler.sendEmptyMessage(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED);
}
private void checkIfBootAnimationFinished() {
if (DEBUG) {
Slog.d(TAG, "Check if boot animation finished...");
}
if (SystemService.isRunning(BOOT_ANIMATION_SERVICE)) {
mHandler.sendEmptyMessageDelayed(MSG_CHECK_IF_BOOT_ANIMATION_FINISHED,
BOOT_ANIMATION_POLL_INTERVAL);
return;
}
synchronized (mLock) {
if (!mBootCompleted) {
Slog.i(TAG, "Boot animation finished.");
handleBootCompletedLocked();
}
}
}
private void handleBootCompletedLocked() {
final long now = SystemClock.uptimeMillis();
mBootCompleted = true;
mDirty |= DIRTY_BOOT_COMPLETED;
userActivityNoUpdateLocked(
now, PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID);
updatePowerStateLocked();
}
/**
* Reboots the device.
*
* @param confirm If true, shows a reboot confirmation dialog.
* @param reason The reason for the reboot, or null if none.
* @param wait If true, this call waits for the reboot to complete and does not return.
*/
@Override // Binder call
public void reboot(boolean confirm, String reason, boolean wait) {
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null);
final long ident = Binder.clearCallingIdentity();
try {
shutdownOrRebootInternal(false, confirm, reason, wait);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
/**
* Shuts down the device.
*
* @param confirm If true, shows a shutdown confirmation dialog.
* @param wait If true, this call waits for the shutdown to complete and does not return.
*/
@Override // Binder call
public void shutdown(boolean confirm, boolean wait) {
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null);
final long ident = Binder.clearCallingIdentity();
try {
shutdownOrRebootInternal(true, confirm, null, wait);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private void shutdownOrRebootInternal(final boolean shutdown, final boolean confirm,
final String reason, boolean wait) {
if (mHandler == null || !mSystemReady) {
throw new IllegalStateException("Too early to call shutdown() or reboot()");
}
Runnable runnable = new Runnable() {
@Override
public void run() {
synchronized (this) {
if (shutdown) {
ShutdownThread.shutdown(mContext, confirm);
} else {
ShutdownThread.reboot(mContext, reason, confirm);
}
}
}
};
// ShutdownThread must run on a looper capable of displaying the UI.
Message msg = Message.obtain(mHandler, runnable);
msg.setAsynchronous(true);
mHandler.sendMessage(msg);
// PowerManager.reboot() is documented not to return so just wait for the inevitable.
if (wait) {
synchronized (runnable) {
while (true) {
try {
runnable.wait();
} catch (InterruptedException e) {
}
}
}
}
}
/**
* Crash the runtime (causing a complete restart of the Android framework).
* Requires REBOOT permission. Mostly for testing. Should not return.
*/
@Override // Binder call
public void crash(String message) {
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.REBOOT, null);
final long ident = Binder.clearCallingIdentity();
try {
crashInternal(message);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private void crashInternal(final String message) {
Thread t = new Thread("PowerManagerService.crash()") {
@Override
public void run() {
throw new RuntimeException(message);
}
};
try {
t.start();
t.join();
} catch (InterruptedException e) {
Log.wtf(TAG, e);
}
}
/**
* Set the setting that determines whether the device stays on when plugged in.
* The argument is a bit string, with each bit specifying a power source that,
* when the device is connected to that source, causes the device to stay on.
* See {@link android.os.BatteryManager} for the list of power sources that
* can be specified. Current values include {@link android.os.BatteryManager#BATTERY_PLUGGED_AC}
* and {@link android.os.BatteryManager#BATTERY_PLUGGED_USB}
*
* Used by "adb shell svc power stayon ..."
*
* @param val an {@code int} containing the bits that specify which power sources
* should cause the device to stay on.
*/
@Override // Binder call
public void setStayOnSetting(int val) {
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.WRITE_SETTINGS, null);
final long ident = Binder.clearCallingIdentity();
try {
setStayOnSettingInternal(val);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private void setStayOnSettingInternal(int val) {
Settings.Global.putInt(mContext.getContentResolver(),
Settings.Global.STAY_ON_WHILE_PLUGGED_IN, val);
}
/**
* Used by device administration to set the maximum screen off timeout.
*
* This method must only be called by the device administration policy manager.
*/
@Override // Binder call
public void setMaximumScreenOffTimeoutFromDeviceAdmin(int timeMs) {
final long ident = Binder.clearCallingIdentity();
try {
setMaximumScreenOffTimeoutFromDeviceAdminInternal(timeMs);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private void setMaximumScreenOffTimeoutFromDeviceAdminInternal(int timeMs) {
synchronized (mLock) {
mMaximumScreenOffTimeoutFromDeviceAdmin = timeMs;
mDirty |= DIRTY_SETTINGS;
updatePowerStateLocked();
}
}
private boolean isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() {
return mMaximumScreenOffTimeoutFromDeviceAdmin >= 0
&& mMaximumScreenOffTimeoutFromDeviceAdmin < Integer.MAX_VALUE;
}
/**
* Used by the phone application to make the attention LED flash when ringing.
*/
@Override // Binder call
public void setAttentionLight(boolean on, int color) {
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null);
final long ident = Binder.clearCallingIdentity();
try {
setAttentionLightInternal(on, color);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private void setAttentionLightInternal(boolean on, int color) {
LightsService.Light light;
synchronized (mLock) {
if (!mSystemReady) {
return;
}
light = mAttentionLight;
}
// Control light outside of lock.
light.setFlashing(color, LightsService.LIGHT_FLASH_HARDWARE, (on ? 3 : 0), 0);
}
/**
* Used by the Watchdog.
*/
public long timeSinceScreenWasLastOn() {
synchronized (mLock) {
if (mDisplayPowerRequest.screenState != DisplayPowerRequest.SCREEN_STATE_OFF) {
return 0;
}
return SystemClock.elapsedRealtime() - mLastScreenOffEventElapsedRealTime;
}
}
/**
* Used by the window manager to override the screen brightness based on the
* current foreground activity.
*
* This method must only be called by the window manager.
*
* @param brightness The overridden brightness, or -1 to disable the override.
*/
public void setScreenBrightnessOverrideFromWindowManager(int brightness) {
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null);
final long ident = Binder.clearCallingIdentity();
try {
setScreenBrightnessOverrideFromWindowManagerInternal(brightness);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private void setScreenBrightnessOverrideFromWindowManagerInternal(int brightness) {
synchronized (mLock) {
if (mScreenBrightnessOverrideFromWindowManager != brightness) {
mScreenBrightnessOverrideFromWindowManager = brightness;
mDirty |= DIRTY_SETTINGS;
updatePowerStateLocked();
}
}
}
/**
* Used by the window manager to override the button brightness based on the
* current foreground activity.
*
* This method must only be called by the window manager.
*
* @param brightness The overridden brightness, or -1 to disable the override.
*/
public void setButtonBrightnessOverrideFromWindowManager(int brightness) {
// Do nothing.
// Button lights are not currently supported in the new implementation.
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null);
}
/**
* Used by the window manager to override the user activity timeout based on the
* current foreground activity. It can only be used to make the timeout shorter
* than usual, not longer.
*
* This method must only be called by the window manager.
*
* @param timeoutMillis The overridden timeout, or -1 to disable the override.
*/
public void setUserActivityTimeoutOverrideFromWindowManager(long timeoutMillis) {
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null);
final long ident = Binder.clearCallingIdentity();
try {
setUserActivityTimeoutOverrideFromWindowManagerInternal(timeoutMillis);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private void setUserActivityTimeoutOverrideFromWindowManagerInternal(long timeoutMillis) {
synchronized (mLock) {
if (mUserActivityTimeoutOverrideFromWindowManager != timeoutMillis) {
mUserActivityTimeoutOverrideFromWindowManager = timeoutMillis;
mDirty |= DIRTY_SETTINGS;
updatePowerStateLocked();
}
}
}
/**
* Used by the settings application and brightness control widgets to
* temporarily override the current screen brightness setting so that the
* user can observe the effect of an intended settings change without applying
* it immediately.
*
* The override will be canceled when the setting value is next updated.
*
* @param brightness The overridden brightness.
*
* @see Settings.System#SCREEN_BRIGHTNESS
*/
@Override // Binder call
public void setTemporaryScreenBrightnessSettingOverride(int brightness) {
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null);
final long ident = Binder.clearCallingIdentity();
try {
setTemporaryScreenBrightnessSettingOverrideInternal(brightness);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private void setTemporaryScreenBrightnessSettingOverrideInternal(int brightness) {
synchronized (mLock) {
if (mTemporaryScreenBrightnessSettingOverride != brightness) {
mTemporaryScreenBrightnessSettingOverride = brightness;
mDirty |= DIRTY_SETTINGS;
updatePowerStateLocked();
}
}
}
/**
* Used by the settings application and brightness control widgets to
* temporarily override the current screen auto-brightness adjustment setting so that the
* user can observe the effect of an intended settings change without applying
* it immediately.
*
* The override will be canceled when the setting value is next updated.
*
* @param adj The overridden brightness, or Float.NaN to disable the override.
*
* @see Settings.System#SCREEN_AUTO_BRIGHTNESS_ADJ
*/
@Override // Binder call
public void setTemporaryScreenAutoBrightnessAdjustmentSettingOverride(float adj) {
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DEVICE_POWER, null);
final long ident = Binder.clearCallingIdentity();
try {
setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(adj);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private void setTemporaryScreenAutoBrightnessAdjustmentSettingOverrideInternal(float adj) {
synchronized (mLock) {
// Note: This condition handles NaN because NaN is not equal to any other
// value, including itself.
if (mTemporaryScreenAutoBrightnessAdjustmentSettingOverride != adj) {
mTemporaryScreenAutoBrightnessAdjustmentSettingOverride = adj;
mDirty |= DIRTY_SETTINGS;
updatePowerStateLocked();
}
}
}
/**
* Low-level function turn the device off immediately, without trying
* to be clean. Most people should use {@link ShutdownThread} for a clean shutdown.
*/
public static void lowLevelShutdown() {
nativeShutdown();
}
/**
* Low-level function to reboot the device.
*
* @param reason code to pass to the kernel (e.g. "recovery"), or null.
* @throws IOException if reboot fails for some reason (eg, lack of
* permission)
*/
public static void lowLevelReboot(String reason) throws IOException {
nativeReboot(reason);
}
@Override // Watchdog.Monitor implementation
public void monitor() {
// Grab and release lock for watchdog monitor to detect deadlocks.
synchronized (mLock) {
}
}
@Override // Binder call
protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP)
!= PackageManager.PERMISSION_GRANTED) {
pw.println("Permission Denial: can't dump PowerManager from from pid="
+ Binder.getCallingPid()
+ ", uid=" + Binder.getCallingUid());
return;
}
pw.println("POWER MANAGER (dumpsys power)\n");
final DisplayPowerController dpc;
final WirelessChargerDetector wcd;
synchronized (mLock) {
pw.println("Power Manager State:");
pw.println(" mDirty=0x" + Integer.toHexString(mDirty));
pw.println(" mWakefulness=" + wakefulnessToString(mWakefulness));
pw.println(" mIsPowered=" + mIsPowered);
pw.println(" mPlugType=" + mPlugType);
pw.println(" mBatteryLevel=" + mBatteryLevel);
pw.println(" mBatteryLevelWhenDreamStarted=" + mBatteryLevelWhenDreamStarted);
pw.println(" mDockState=" + mDockState);
pw.println(" mStayOn=" + mStayOn);
pw.println(" mProximityPositive=" + mProximityPositive);
pw.println(" mBootCompleted=" + mBootCompleted);
pw.println(" mSystemReady=" + mSystemReady);
pw.println(" mWakeLockSummary=0x" + Integer.toHexString(mWakeLockSummary));
pw.println(" mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary));
pw.println(" mRequestWaitForNegativeProximity=" + mRequestWaitForNegativeProximity);
pw.println(" mSandmanScheduled=" + mSandmanScheduled);
pw.println(" mLastWakeTime=" + TimeUtils.formatUptime(mLastWakeTime));
pw.println(" mLastSleepTime=" + TimeUtils.formatUptime(mLastSleepTime));
pw.println(" mSendWakeUpFinishedNotificationWhenReady="
+ mSendWakeUpFinishedNotificationWhenReady);
pw.println(" mSendGoToSleepFinishedNotificationWhenReady="
+ mSendGoToSleepFinishedNotificationWhenReady);
pw.println(" mLastUserActivityTime=" + TimeUtils.formatUptime(mLastUserActivityTime));
pw.println(" mLastUserActivityTimeNoChangeLights="
+ TimeUtils.formatUptime(mLastUserActivityTimeNoChangeLights));
pw.println(" mDisplayReady=" + mDisplayReady);
pw.println(" mHoldingWakeLockSuspendBlocker=" + mHoldingWakeLockSuspendBlocker);
pw.println(" mHoldingDisplaySuspendBlocker=" + mHoldingDisplaySuspendBlocker);
pw.println();
pw.println("Settings and Configuration:");
pw.println(" mDreamsSupportedConfig=" + mDreamsSupportedConfig);
pw.println(" mDreamsEnabledSetting=" + mDreamsEnabledSetting);
pw.println(" mDreamsActivateOnSleepSetting=" + mDreamsActivateOnSleepSetting);
pw.println(" mDreamsActivateOnDockSetting=" + mDreamsActivateOnDockSetting);
pw.println(" mScreenOffTimeoutSetting=" + mScreenOffTimeoutSetting);
pw.println(" mMaximumScreenOffTimeoutFromDeviceAdmin="
+ mMaximumScreenOffTimeoutFromDeviceAdmin + " (enforced="
+ isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked() + ")");
pw.println(" mStayOnWhilePluggedInSetting=" + mStayOnWhilePluggedInSetting);
pw.println(" mScreenBrightnessSetting=" + mScreenBrightnessSetting);
pw.println(" mScreenAutoBrightnessAdjustmentSetting="
+ mScreenAutoBrightnessAdjustmentSetting);
pw.println(" mScreenBrightnessModeSetting=" + mScreenBrightnessModeSetting);
pw.println(" mScreenBrightnessOverrideFromWindowManager="
+ mScreenBrightnessOverrideFromWindowManager);
pw.println(" mUserActivityTimeoutOverrideFromWindowManager="
+ mUserActivityTimeoutOverrideFromWindowManager);
pw.println(" mTemporaryScreenBrightnessSettingOverride="
+ mTemporaryScreenBrightnessSettingOverride);
pw.println(" mTemporaryScreenAutoBrightnessAdjustmentSettingOverride="
+ mTemporaryScreenAutoBrightnessAdjustmentSettingOverride);
pw.println(" mScreenBrightnessSettingMinimum=" + mScreenBrightnessSettingMinimum);
pw.println(" mScreenBrightnessSettingMaximum=" + mScreenBrightnessSettingMaximum);
pw.println(" mScreenBrightnessSettingDefault=" + mScreenBrightnessSettingDefault);
final int screenOffTimeout = getScreenOffTimeoutLocked();
final int screenDimDuration = getScreenDimDurationLocked(screenOffTimeout);
pw.println();
pw.println("Screen off timeout: " + screenOffTimeout + " ms");
pw.println("Screen dim duration: " + screenDimDuration + " ms");
pw.println();
pw.println("Wake Locks: size=" + mWakeLocks.size());
for (WakeLock wl : mWakeLocks) {
pw.println(" " + wl);
}
pw.println();
pw.println("Suspend Blockers: size=" + mSuspendBlockers.size());
for (SuspendBlocker sb : mSuspendBlockers) {
pw.println(" " + sb);
}
pw.println();
pw.println("Screen On Blocker: " + mScreenOnBlocker);
pw.println();
pw.println("Display Blanker: " + mDisplayBlanker);
dpc = mDisplayPowerController;
wcd = mWirelessChargerDetector;
}
if (dpc != null) {
dpc.dump(pw);
}
if (wcd != null) {
wcd.dump(pw);
}
}
private SuspendBlocker createSuspendBlockerLocked(String name) {
SuspendBlocker suspendBlocker = new SuspendBlockerImpl(name);
mSuspendBlockers.add(suspendBlocker);
return suspendBlocker;
}
private static String wakefulnessToString(int wakefulness) {
switch (wakefulness) {
case WAKEFULNESS_ASLEEP:
return "Asleep";
case WAKEFULNESS_AWAKE:
return "Awake";
case WAKEFULNESS_DREAMING:
return "Dreaming";
case WAKEFULNESS_NAPPING:
return "Napping";
default:
return Integer.toString(wakefulness);
}
}
private static WorkSource copyWorkSource(WorkSource workSource) {
return workSource != null ? new WorkSource(workSource) : null;
}
private final class BatteryReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
synchronized (mLock) {
handleBatteryStateChangedLocked();
}
}
}
private final class BootCompletedReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
// This is our early signal that the system thinks it has finished booting.
// However, the boot animation may still be running for a few more seconds
// since it is ultimately in charge of when it terminates.
// Defer transitioning into the boot completed state until the animation exits.
// We do this so that the screen does not start to dim prematurely before
// the user has actually had a chance to interact with the device.
startWatchingForBootAnimationFinished();
}
}
private final class DreamReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
synchronized (mLock) {
scheduleSandmanLocked();
}
}
}
private final class UserSwitchedReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
synchronized (mLock) {
handleSettingsChangedLocked();
}
}
}
private final class DockReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
synchronized (mLock) {
int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE,
Intent.EXTRA_DOCK_STATE_UNDOCKED);
if (mDockState != dockState) {
mDockState = dockState;
mDirty |= DIRTY_DOCK_STATE;
updatePowerStateLocked();
}
}
}
}
private final class SettingsObserver extends ContentObserver {
public SettingsObserver(Handler handler) {
super(handler);
}
@Override
public void onChange(boolean selfChange, Uri uri) {
synchronized (mLock) {
handleSettingsChangedLocked();
}
}
}
/**
* Handler for asynchronous operations performed by the power manager.
*/
private final class PowerManagerHandler extends Handler {
public PowerManagerHandler(Looper looper) {
super(looper, null, true /*async*/);
}
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_USER_ACTIVITY_TIMEOUT:
handleUserActivityTimeout();
break;
case MSG_SANDMAN:
handleSandman();
break;
case MSG_SCREEN_ON_BLOCKER_RELEASED:
handleScreenOnBlockerReleased();
break;
case MSG_CHECK_IF_BOOT_ANIMATION_FINISHED:
checkIfBootAnimationFinished();
break;
}
}
}
/**
* Represents a wake lock that has been acquired by an application.
*/
private final class WakeLock implements IBinder.DeathRecipient {
public final IBinder mLock;
public int mFlags;
public String mTag;
public WorkSource mWorkSource;
public int mOwnerUid;
public int mOwnerPid;
public WakeLock(IBinder lock, int flags, String tag, WorkSource workSource,
int ownerUid, int ownerPid) {
mLock = lock;
mFlags = flags;
mTag = tag;
mWorkSource = copyWorkSource(workSource);
mOwnerUid = ownerUid;
mOwnerPid = ownerPid;
}
@Override
public void binderDied() {
PowerManagerService.this.handleWakeLockDeath(this);
}
public boolean hasSameProperties(int flags, String tag, WorkSource workSource,
int ownerUid, int ownerPid) {
return mFlags == flags
&& mTag.equals(tag)
&& hasSameWorkSource(workSource)
&& mOwnerUid == ownerUid
&& mOwnerPid == ownerPid;
}
public void updateProperties(int flags, String tag, WorkSource workSource,
int ownerUid, int ownerPid) {
mFlags = flags;
mTag = tag;
updateWorkSource(workSource);
mOwnerUid = ownerUid;
mOwnerPid = ownerPid;
}
public boolean hasSameWorkSource(WorkSource workSource) {
return Objects.equal(mWorkSource, workSource);
}
public void updateWorkSource(WorkSource workSource) {
mWorkSource = copyWorkSource(workSource);
}
@Override
public String toString() {
return getLockLevelString()
+ " '" + mTag + "'" + getLockFlagsString()
+ " (uid=" + mOwnerUid + ", pid=" + mOwnerPid + ", ws=" + mWorkSource + ")";
}
private String getLockLevelString() {
switch (mFlags & PowerManager.WAKE_LOCK_LEVEL_MASK) {
case PowerManager.FULL_WAKE_LOCK:
return "FULL_WAKE_LOCK ";
case PowerManager.SCREEN_BRIGHT_WAKE_LOCK:
return "SCREEN_BRIGHT_WAKE_LOCK ";
case PowerManager.SCREEN_DIM_WAKE_LOCK:
return "SCREEN_DIM_WAKE_LOCK ";
case PowerManager.PARTIAL_WAKE_LOCK:
return "PARTIAL_WAKE_LOCK ";
case PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK:
return "PROXIMITY_SCREEN_OFF_WAKE_LOCK";
default:
return "??? ";
}
}
private String getLockFlagsString() {
String result = "";
if ((mFlags & PowerManager.ACQUIRE_CAUSES_WAKEUP) != 0) {
result += " ACQUIRE_CAUSES_WAKEUP";
}
if ((mFlags & PowerManager.ON_AFTER_RELEASE) != 0) {
result += " ON_AFTER_RELEASE";
}
return result;
}
}
private final class SuspendBlockerImpl implements SuspendBlocker {
private final String mName;
private int mReferenceCount;
public SuspendBlockerImpl(String name) {
mName = name;
}
@Override
protected void finalize() throws Throwable {
try {
if (mReferenceCount != 0) {
Log.wtf(TAG, "Suspend blocker \"" + mName
+ "\" was finalized without being released!");
mReferenceCount = 0;
nativeReleaseSuspendBlocker(mName);
}
} finally {
super.finalize();
}
}
@Override
public void acquire() {
synchronized (this) {
mReferenceCount += 1;
if (mReferenceCount == 1) {
if (DEBUG_SPEW) {
Slog.d(TAG, "Acquiring suspend blocker \"" + mName + "\".");
}
nativeAcquireSuspendBlocker(mName);
}
}
}
@Override
public void release() {
synchronized (this) {
mReferenceCount -= 1;
if (mReferenceCount == 0) {
if (DEBUG_SPEW) {
Slog.d(TAG, "Releasing suspend blocker \"" + mName + "\".");
}
nativeReleaseSuspendBlocker(mName);
} else if (mReferenceCount < 0) {
Log.wtf(TAG, "Suspend blocker \"" + mName
+ "\" was released without being acquired!", new Throwable());
mReferenceCount = 0;
}
}
}
@Override
public String toString() {
synchronized (this) {
return mName + ": ref count=" + mReferenceCount;
}
}
}
private final class ScreenOnBlockerImpl implements ScreenOnBlocker {
private int mNestCount;
public boolean isHeld() {
synchronized (this) {
return mNestCount != 0;
}
}
@Override
public void acquire() {
synchronized (this) {
mNestCount += 1;
if (DEBUG) {
Slog.d(TAG, "Screen on blocked: mNestCount=" + mNestCount);
}
}
}
@Override
public void release() {
synchronized (this) {
mNestCount -= 1;
if (mNestCount < 0) {
Log.wtf(TAG, "Screen on blocker was released without being acquired!",
new Throwable());
mNestCount = 0;
}
if (mNestCount == 0) {
mHandler.sendEmptyMessage(MSG_SCREEN_ON_BLOCKER_RELEASED);
}
if (DEBUG) {
Slog.d(TAG, "Screen on unblocked: mNestCount=" + mNestCount);
}
}
}
@Override
public String toString() {
synchronized (this) {
return "held=" + (mNestCount != 0) + ", mNestCount=" + mNestCount;
}
}
}
private final class DisplayBlankerImpl implements DisplayBlanker {
private boolean mBlanked;
@Override
public void blankAllDisplays() {
synchronized (this) {
mBlanked = true;
mDisplayManagerService.blankAllDisplaysFromPowerManager();
nativeSetInteractive(false);
nativeSetAutoSuspend(true);
}
}
@Override
public void unblankAllDisplays() {
synchronized (this) {
nativeSetAutoSuspend(false);
nativeSetInteractive(true);
mDisplayManagerService.unblankAllDisplaysFromPowerManager();
mBlanked = false