| /* |
| * Copyright (C) 2018 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.batterysaver; |
| |
| import static com.android.server.power.batterysaver.BatterySaverController.reasonToString; |
| |
| import android.annotation.NonNull; |
| import android.annotation.StringRes; |
| import android.app.Notification; |
| import android.app.NotificationChannel; |
| import android.app.NotificationManager; |
| import android.app.PendingIntent; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.res.Resources; |
| import android.database.ContentObserver; |
| import android.os.BatterySaverPolicyConfig; |
| import android.os.Handler; |
| import android.os.PowerManager; |
| import android.os.SystemClock; |
| import android.os.UserHandle; |
| import android.provider.Settings; |
| import android.util.IndentingPrintWriter; |
| import android.util.Slog; |
| import android.util.proto.ProtoOutputStream; |
| |
| import com.android.internal.R; |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.internal.os.BackgroundThread; |
| import com.android.server.EventLogTags; |
| import com.android.server.power.BatterySaverStateMachineProto; |
| |
| import java.io.PrintWriter; |
| |
| /** |
| * Decides when to enable / disable battery saver. |
| * |
| * IMPORTANT: This class shares the power manager lock, which is very low in the lock hierarchy. |
| * Do not call out with the lock held. (Settings provider is okay.) |
| * |
| * Test: atest com.android.server.power.batterysaver.BatterySaverStateMachineTest |
| * |
| * Current state machine. This can be visualized using Graphviz: |
| <pre> |
| |
| digraph { |
| STATE_OFF |
| STATE_MANUAL_ON [label="STATE_MANUAL_ON\nTurned on manually by the user"] |
| STATE_AUTOMATIC_ON [label="STATE_AUTOMATIC_ON\nTurned on automatically by the system"] |
| STATE_OFF_AUTOMATIC_SNOOZED [ |
| label="STATE_OFF_AUTOMATIC_SNOOZED\nTurned off manually by the user." |
| + " The system should not turn it back on automatically." |
| ] |
| STATE_PENDING_STICKY_ON [ |
| label="STATE_PENDING_STICKY_ON\n" |
| + " Turned on manually by the user and then plugged in. Will turn back on after unplug." |
| ] |
| |
| STATE_OFF -> STATE_MANUAL_ON [label="manual"] |
| STATE_OFF -> STATE_AUTOMATIC_ON [label="Auto on AND charge <= auto threshold"] |
| |
| STATE_MANUAL_ON -> STATE_OFF [label="manual\nOR\nPlugged & sticky disabled"] |
| STATE_MANUAL_ON -> STATE_PENDING_STICKY_ON [label="Plugged & sticky enabled"] |
| |
| STATE_PENDING_STICKY_ON -> STATE_MANUAL_ON [label="Unplugged & sticky enabled"] |
| STATE_PENDING_STICKY_ON -> STATE_OFF [ |
| label="Sticky disabled\nOR\nSticky auto off enabled AND charge >= sticky auto off threshold" |
| ] |
| |
| STATE_AUTOMATIC_ON -> STATE_OFF [label="Plugged"] |
| STATE_AUTOMATIC_ON -> STATE_OFF_AUTOMATIC_SNOOZED [label="Manual"] |
| |
| STATE_OFF_AUTOMATIC_SNOOZED -> STATE_OFF [label="Plug\nOR\nCharge > auto threshold"] |
| STATE_OFF_AUTOMATIC_SNOOZED -> STATE_MANUAL_ON [label="manual"] |
| |
| </pre> |
| } |
| */ |
| public class BatterySaverStateMachine { |
| private static final String TAG = "BatterySaverStateMachine"; |
| private static final String DYNAMIC_MODE_NOTIF_CHANNEL_ID = "dynamic_mode_notification"; |
| private static final String BATTERY_SAVER_NOTIF_CHANNEL_ID = "battery_saver_channel"; |
| private static final int DYNAMIC_MODE_NOTIFICATION_ID = 1992; |
| private static final int STICKY_AUTO_DISABLED_NOTIFICATION_ID = 1993; |
| private final Object mLock; |
| |
| private static final boolean DEBUG = BatterySaverPolicy.DEBUG; |
| |
| private static final long ADAPTIVE_CHANGE_TIMEOUT_MS = 24 * 60 * 60 * 1000L; |
| |
| /** Turn off adaptive battery saver if the device has charged above this level. */ |
| private static final int ADAPTIVE_AUTO_DISABLE_BATTERY_LEVEL = 80; |
| |
| private static final int STATE_OFF = BatterySaverStateMachineProto.STATE_OFF; |
| |
| /** Turned on manually by the user. */ |
| private static final int STATE_MANUAL_ON = BatterySaverStateMachineProto.STATE_MANUAL_ON; |
| |
| /** Turned on automatically by the system. */ |
| private static final int STATE_AUTOMATIC_ON = BatterySaverStateMachineProto.STATE_AUTOMATIC_ON; |
| |
| /** Turned off manually by the user. The system should not turn it back on automatically. */ |
| private static final int STATE_OFF_AUTOMATIC_SNOOZED = |
| BatterySaverStateMachineProto.STATE_OFF_AUTOMATIC_SNOOZED; |
| |
| /** Turned on manually by the user and then plugged in. Will turn back on after unplug. */ |
| private static final int STATE_PENDING_STICKY_ON = |
| BatterySaverStateMachineProto.STATE_PENDING_STICKY_ON; |
| |
| private final Context mContext; |
| private final BatterySaverController mBatterySaverController; |
| |
| /** Whether the system has booted. */ |
| @GuardedBy("mLock") |
| private boolean mBootCompleted; |
| |
| /** Whether global settings have been loaded already. */ |
| @GuardedBy("mLock") |
| private boolean mSettingsLoaded; |
| |
| /** Whether the first battery status has arrived. */ |
| @GuardedBy("mLock") |
| private boolean mBatteryStatusSet; |
| |
| @GuardedBy("mLock") |
| private int mState; |
| |
| /** Whether the device is connected to any power source. */ |
| @GuardedBy("mLock") |
| private boolean mIsPowered; |
| |
| /** Current battery level in %, 0-100. (Currently only used in dumpsys.) */ |
| @GuardedBy("mLock") |
| private int mBatteryLevel; |
| |
| /** Whether the battery level is considered to be "low" or not. */ |
| @GuardedBy("mLock") |
| private boolean mIsBatteryLevelLow; |
| |
| /** Previously known value of Settings.Global.LOW_POWER_MODE. */ |
| @GuardedBy("mLock") |
| private boolean mSettingBatterySaverEnabled; |
| |
| /** Previously known value of Settings.Global.LOW_POWER_MODE_STICKY. */ |
| @GuardedBy("mLock") |
| private boolean mSettingBatterySaverEnabledSticky; |
| |
| /** Config flag to track if battery saver's sticky behaviour is disabled. */ |
| private final boolean mBatterySaverStickyBehaviourDisabled; |
| |
| /** |
| * Whether or not to end sticky battery saver upon reaching a level specified by |
| * {@link #mSettingBatterySaverStickyAutoDisableThreshold}. |
| */ |
| @GuardedBy("mLock") |
| private boolean mSettingBatterySaverStickyAutoDisableEnabled; |
| |
| /** |
| * The battery level at which to end sticky battery saver. Only useful if |
| * {@link #mSettingBatterySaverStickyAutoDisableEnabled} is {@code true}. |
| */ |
| @GuardedBy("mLock") |
| private int mSettingBatterySaverStickyAutoDisableThreshold; |
| |
| /** |
| * Config flag to track default disable threshold for Dynamic Power Savings enabled battery |
| * saver. |
| */ |
| @GuardedBy("mLock") |
| private final int mDynamicPowerSavingsDefaultDisableThreshold; |
| |
| /** |
| * Previously known value of Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL. |
| * (Currently only used in dumpsys.) |
| */ |
| @GuardedBy("mLock") |
| private int mSettingBatterySaverTriggerThreshold; |
| |
| /** Previously known value of Settings.Global.AUTOMATIC_POWER_SAVE_MODE. */ |
| @GuardedBy("mLock") |
| private int mSettingAutomaticBatterySaver; |
| |
| /** |
| * When to disable battery saver again if it was enabled due to an external suggestion. |
| * Corresponds to Settings.Global.DYNAMIC_POWER_SAVINGS_DISABLE_THRESHOLD. |
| */ |
| @GuardedBy("mLock") |
| private int mDynamicPowerSavingsDisableThreshold; |
| |
| /** |
| * Whether we've received a suggestion that battery saver should be on from an external app. |
| * Updates when Settings.Global.DYNAMIC_POWER_SAVINGS_ENABLED changes. |
| */ |
| @GuardedBy("mLock") |
| private boolean mDynamicPowerSavingsEnableBatterySaver; |
| |
| /** |
| * Last reason passed to {@link #enableBatterySaverLocked}. |
| */ |
| @GuardedBy("mLock") |
| private int mLastChangedIntReason; |
| |
| /** |
| * Last reason passed to {@link #enableBatterySaverLocked}. |
| */ |
| @GuardedBy("mLock") |
| private String mLastChangedStrReason; |
| |
| /** |
| * The last time adaptive battery saver was changed by an external service, using elapsed |
| * realtime as the timebase. |
| */ |
| @GuardedBy("mLock") |
| private long mLastAdaptiveBatterySaverChangedExternallyElapsed; |
| |
| private final ContentObserver mSettingsObserver = new ContentObserver(null) { |
| @Override |
| public void onChange(boolean selfChange) { |
| synchronized (mLock) { |
| refreshSettingsLocked(); |
| } |
| } |
| }; |
| |
| public BatterySaverStateMachine(Object lock, |
| Context context, BatterySaverController batterySaverController) { |
| mLock = lock; |
| mContext = context; |
| mBatterySaverController = batterySaverController; |
| mState = STATE_OFF; |
| |
| mBatterySaverStickyBehaviourDisabled = mContext.getResources().getBoolean( |
| com.android.internal.R.bool.config_batterySaverStickyBehaviourDisabled); |
| mDynamicPowerSavingsDefaultDisableThreshold = mContext.getResources().getInteger( |
| com.android.internal.R.integer.config_dynamicPowerSavingsDefaultDisableThreshold); |
| } |
| |
| /** @return true if the automatic percentage based mode should be used */ |
| private boolean isAutomaticModeActiveLocked() { |
| return mSettingAutomaticBatterySaver == PowerManager.POWER_SAVE_MODE_TRIGGER_PERCENTAGE |
| && mSettingBatterySaverTriggerThreshold > 0; |
| } |
| |
| /** |
| * The returned value won't necessarily make sense if {@link #isAutomaticModeActiveLocked()} |
| * returns {@code false}. |
| * |
| * @return true if the battery level is below automatic's threshold. |
| */ |
| private boolean isInAutomaticLowZoneLocked() { |
| return mIsBatteryLevelLow; |
| } |
| |
| /** @return true if the dynamic mode should be used */ |
| private boolean isDynamicModeActiveLocked() { |
| return mSettingAutomaticBatterySaver == PowerManager.POWER_SAVE_MODE_TRIGGER_DYNAMIC |
| && mDynamicPowerSavingsEnableBatterySaver; |
| } |
| |
| /** |
| * The returned value won't necessarily make sense if {@link #isDynamicModeActiveLocked()} |
| * returns {@code false}. |
| * |
| * @return true if the battery level is below dynamic's threshold. |
| */ |
| private boolean isInDynamicLowZoneLocked() { |
| return mBatteryLevel <= mDynamicPowerSavingsDisableThreshold; |
| } |
| |
| /** |
| * {@link com.android.server.power.PowerManagerService} calls it when the system is booted. |
| */ |
| public void onBootCompleted() { |
| if (DEBUG) { |
| Slog.d(TAG, "onBootCompleted"); |
| } |
| // Just booted. We don't want LOW_POWER_MODE to be persisted, so just always clear it. |
| putGlobalSetting(Settings.Global.LOW_POWER_MODE, 0); |
| |
| // This is called with the power manager lock held. Don't do anything that may call to |
| // upper services. (e.g. don't call into AM directly) |
| // So use a BG thread. |
| runOnBgThread(() -> { |
| |
| final ContentResolver cr = mContext.getContentResolver(); |
| cr.registerContentObserver(Settings.Global.getUriFor( |
| Settings.Global.LOW_POWER_MODE), |
| false, mSettingsObserver, UserHandle.USER_SYSTEM); |
| cr.registerContentObserver(Settings.Global.getUriFor( |
| Settings.Global.LOW_POWER_MODE_STICKY), |
| false, mSettingsObserver, UserHandle.USER_SYSTEM); |
| cr.registerContentObserver(Settings.Global.getUriFor( |
| Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL), |
| false, mSettingsObserver, UserHandle.USER_SYSTEM); |
| cr.registerContentObserver(Settings.Global.getUriFor( |
| Settings.Global.AUTOMATIC_POWER_SAVE_MODE), |
| false, mSettingsObserver, UserHandle.USER_SYSTEM); |
| cr.registerContentObserver(Settings.Global.getUriFor( |
| Settings.Global.DYNAMIC_POWER_SAVINGS_ENABLED), |
| false, mSettingsObserver, UserHandle.USER_SYSTEM); |
| cr.registerContentObserver(Settings.Global.getUriFor( |
| Settings.Global.DYNAMIC_POWER_SAVINGS_DISABLE_THRESHOLD), |
| false, mSettingsObserver, UserHandle.USER_SYSTEM); |
| cr.registerContentObserver(Settings.Global.getUriFor( |
| Settings.Global.LOW_POWER_MODE_STICKY_AUTO_DISABLE_ENABLED), |
| false, mSettingsObserver, UserHandle.USER_SYSTEM); |
| cr.registerContentObserver(Settings.Global.getUriFor( |
| Settings.Global.LOW_POWER_MODE_STICKY_AUTO_DISABLE_LEVEL), |
| false, mSettingsObserver, UserHandle.USER_SYSTEM); |
| |
| |
| synchronized (mLock) { |
| final boolean lowPowerModeEnabledSticky = getGlobalSetting( |
| Settings.Global.LOW_POWER_MODE_STICKY, 0) != 0; |
| |
| if (lowPowerModeEnabledSticky) { |
| mState = STATE_PENDING_STICKY_ON; |
| } |
| |
| mBootCompleted = true; |
| |
| refreshSettingsLocked(); |
| |
| doAutoBatterySaverLocked(); |
| } |
| }); |
| } |
| |
| /** |
| * Run a {@link Runnable} on a background handler. |
| */ |
| @VisibleForTesting |
| void runOnBgThread(Runnable r) { |
| BackgroundThread.getHandler().post(r); |
| } |
| |
| /** |
| * Run a {@link Runnable} on a background handler, but lazily. If the same {@link Runnable} is |
| * already registered, it'll be first removed before being re-posted. |
| */ |
| @VisibleForTesting |
| void runOnBgThreadLazy(Runnable r, int delayMillis) { |
| final Handler h = BackgroundThread.getHandler(); |
| h.removeCallbacks(r); |
| h.postDelayed(r, delayMillis); |
| } |
| |
| @GuardedBy("mLock") |
| private void refreshSettingsLocked() { |
| final boolean lowPowerModeEnabled = getGlobalSetting( |
| Settings.Global.LOW_POWER_MODE, 0) != 0; |
| final boolean lowPowerModeEnabledSticky = getGlobalSetting( |
| Settings.Global.LOW_POWER_MODE_STICKY, 0) != 0; |
| final boolean dynamicPowerSavingsBatterySaver = getGlobalSetting( |
| Settings.Global.DYNAMIC_POWER_SAVINGS_ENABLED, 0) != 0; |
| final int lowPowerModeTriggerLevel = getGlobalSetting( |
| Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL, 0); |
| final int automaticBatterySaverMode = getGlobalSetting( |
| Settings.Global.AUTOMATIC_POWER_SAVE_MODE, |
| PowerManager.POWER_SAVE_MODE_TRIGGER_PERCENTAGE); |
| final int dynamicPowerSavingsDisableThreshold = getGlobalSetting( |
| Settings.Global.DYNAMIC_POWER_SAVINGS_DISABLE_THRESHOLD, |
| mDynamicPowerSavingsDefaultDisableThreshold); |
| final boolean isStickyAutoDisableEnabled = getGlobalSetting( |
| Settings.Global.LOW_POWER_MODE_STICKY_AUTO_DISABLE_ENABLED, 1) != 0; |
| final int stickyAutoDisableThreshold = getGlobalSetting( |
| Settings.Global.LOW_POWER_MODE_STICKY_AUTO_DISABLE_LEVEL, 90); |
| |
| setSettingsLocked(lowPowerModeEnabled, lowPowerModeEnabledSticky, |
| lowPowerModeTriggerLevel, |
| isStickyAutoDisableEnabled, stickyAutoDisableThreshold, |
| automaticBatterySaverMode, |
| dynamicPowerSavingsBatterySaver, dynamicPowerSavingsDisableThreshold); |
| } |
| |
| /** |
| * {@link com.android.server.power.PowerManagerService} calls it when relevant global settings |
| * have changed. |
| * |
| * Note this will be called before {@link #onBootCompleted} too. |
| */ |
| @GuardedBy("mLock") |
| @VisibleForTesting |
| void setSettingsLocked(boolean batterySaverEnabled, boolean batterySaverEnabledSticky, |
| int batterySaverTriggerThreshold, |
| boolean isStickyAutoDisableEnabled, int stickyAutoDisableThreshold, |
| int automaticBatterySaver, |
| boolean dynamicPowerSavingsBatterySaver, int dynamicPowerSavingsDisableThreshold) { |
| if (DEBUG) { |
| Slog.d(TAG, "setSettings: enabled=" + batterySaverEnabled |
| + " sticky=" + batterySaverEnabledSticky |
| + " threshold=" + batterySaverTriggerThreshold |
| + " stickyAutoDisableEnabled=" + isStickyAutoDisableEnabled |
| + " stickyAutoDisableThreshold=" + stickyAutoDisableThreshold |
| + " automaticBatterySaver=" + automaticBatterySaver |
| + " dynamicPowerSavingsBatterySaver=" + dynamicPowerSavingsBatterySaver |
| + " dynamicPowerSavingsDisableThreshold=" |
| + dynamicPowerSavingsDisableThreshold); |
| } |
| |
| mSettingsLoaded = true; |
| |
| // Set sensible limits. |
| stickyAutoDisableThreshold = Math.max(stickyAutoDisableThreshold, |
| batterySaverTriggerThreshold); |
| |
| final boolean enabledChanged = mSettingBatterySaverEnabled != batterySaverEnabled; |
| final boolean stickyChanged = |
| mSettingBatterySaverEnabledSticky != batterySaverEnabledSticky; |
| final boolean thresholdChanged |
| = mSettingBatterySaverTriggerThreshold != batterySaverTriggerThreshold; |
| final boolean stickyAutoDisableEnabledChanged = |
| mSettingBatterySaverStickyAutoDisableEnabled != isStickyAutoDisableEnabled; |
| final boolean stickyAutoDisableThresholdChanged = |
| mSettingBatterySaverStickyAutoDisableThreshold != stickyAutoDisableThreshold; |
| final boolean automaticModeChanged = mSettingAutomaticBatterySaver != automaticBatterySaver; |
| final boolean dynamicPowerSavingsThresholdChanged = |
| mDynamicPowerSavingsDisableThreshold != dynamicPowerSavingsDisableThreshold; |
| final boolean dynamicPowerSavingsBatterySaverChanged = |
| mDynamicPowerSavingsEnableBatterySaver != dynamicPowerSavingsBatterySaver; |
| |
| if (!(enabledChanged || stickyChanged || thresholdChanged || automaticModeChanged |
| || stickyAutoDisableEnabledChanged || stickyAutoDisableThresholdChanged |
| || dynamicPowerSavingsThresholdChanged || dynamicPowerSavingsBatterySaverChanged)) { |
| return; |
| } |
| |
| mSettingBatterySaverEnabled = batterySaverEnabled; |
| mSettingBatterySaverEnabledSticky = batterySaverEnabledSticky; |
| mSettingBatterySaverTriggerThreshold = batterySaverTriggerThreshold; |
| mSettingBatterySaverStickyAutoDisableEnabled = isStickyAutoDisableEnabled; |
| mSettingBatterySaverStickyAutoDisableThreshold = stickyAutoDisableThreshold; |
| mSettingAutomaticBatterySaver = automaticBatterySaver; |
| mDynamicPowerSavingsDisableThreshold = dynamicPowerSavingsDisableThreshold; |
| mDynamicPowerSavingsEnableBatterySaver = dynamicPowerSavingsBatterySaver; |
| |
| if (thresholdChanged) { |
| // To avoid spamming the event log, we throttle logging here. |
| runOnBgThreadLazy(mThresholdChangeLogger, 2000); |
| } |
| |
| if (!mSettingBatterySaverStickyAutoDisableEnabled) { |
| hideStickyDisabledNotification(); |
| } |
| |
| if (enabledChanged) { |
| final String reason = batterySaverEnabled |
| ? "Global.low_power changed to 1" : "Global.low_power changed to 0"; |
| enableBatterySaverLocked(/*enable=*/ batterySaverEnabled, /*manual=*/ true, |
| BatterySaverController.REASON_SETTING_CHANGED, reason); |
| } else { |
| doAutoBatterySaverLocked(); |
| } |
| } |
| |
| private final Runnable mThresholdChangeLogger = () -> { |
| EventLogTags.writeBatterySaverSetting(mSettingBatterySaverTriggerThreshold); |
| }; |
| |
| /** |
| * {@link com.android.server.power.PowerManagerService} calls it when battery state changes. |
| * |
| * Note this may be called before {@link #onBootCompleted} too. |
| */ |
| public void setBatteryStatus(boolean newPowered, int newLevel, boolean newBatteryLevelLow) { |
| if (DEBUG) { |
| Slog.d(TAG, "setBatteryStatus: powered=" + newPowered + " level=" + newLevel |
| + " low=" + newBatteryLevelLow); |
| } |
| synchronized (mLock) { |
| mBatteryStatusSet = true; |
| |
| final boolean poweredChanged = mIsPowered != newPowered; |
| final boolean levelChanged = mBatteryLevel != newLevel; |
| final boolean lowChanged = mIsBatteryLevelLow != newBatteryLevelLow; |
| |
| if (!(poweredChanged || levelChanged || lowChanged)) { |
| return; |
| } |
| |
| mIsPowered = newPowered; |
| mBatteryLevel = newLevel; |
| mIsBatteryLevelLow = newBatteryLevelLow; |
| |
| doAutoBatterySaverLocked(); |
| } |
| } |
| |
| /** |
| * Change the full battery saver policy. |
| */ |
| public BatterySaverPolicyConfig getFullBatterySaverPolicy() { |
| if (DEBUG) { |
| Slog.d(TAG, "getFullBatterySaverPolicy"); |
| } |
| |
| synchronized (mLock) { |
| return mBatterySaverController.getPolicyLocked(BatterySaverPolicy.POLICY_LEVEL_FULL); |
| } |
| } |
| |
| /** |
| * Change the full battery saver policy. |
| */ |
| public boolean setFullBatterySaverPolicy(BatterySaverPolicyConfig config) { |
| if (DEBUG) { |
| Slog.d(TAG, "setFullBatterySaverPolicy: config=" + config); |
| } |
| |
| synchronized (mLock) { |
| return mBatterySaverController.setFullPolicyLocked(config, |
| BatterySaverController.REASON_FULL_POWER_SAVINGS_CHANGED); |
| } |
| } |
| |
| /** |
| * Enable or disable the current adaptive battery saver policy. This may not change what's in |
| * effect if full battery saver is also enabled. |
| */ |
| public boolean setAdaptiveBatterySaverEnabled(boolean enabled) { |
| if (DEBUG) { |
| Slog.d(TAG, "setAdaptiveBatterySaverEnabled: enabled=" + enabled); |
| } |
| synchronized (mLock) { |
| mLastAdaptiveBatterySaverChangedExternallyElapsed = SystemClock.elapsedRealtime(); |
| return mBatterySaverController.setAdaptivePolicyEnabledLocked( |
| enabled, BatterySaverController.REASON_ADAPTIVE_DYNAMIC_POWER_SAVINGS_CHANGED); |
| } |
| } |
| |
| /** |
| * Change the adaptive battery saver policy. |
| */ |
| public boolean setAdaptiveBatterySaverPolicy(BatterySaverPolicyConfig config) { |
| if (DEBUG) { |
| Slog.d(TAG, "setAdaptiveBatterySaverPolicy: config=" + config); |
| } |
| |
| synchronized (mLock) { |
| mLastAdaptiveBatterySaverChangedExternallyElapsed = SystemClock.elapsedRealtime(); |
| return mBatterySaverController.setAdaptivePolicyLocked(config, |
| BatterySaverController.REASON_ADAPTIVE_DYNAMIC_POWER_SAVINGS_CHANGED); |
| } |
| } |
| |
| /** |
| * Decide whether to auto-start / stop battery saver. |
| */ |
| @GuardedBy("mLock") |
| private void doAutoBatterySaverLocked() { |
| if (DEBUG) { |
| Slog.d(TAG, "doAutoBatterySaverLocked: mBootCompleted=" + mBootCompleted |
| + " mSettingsLoaded=" + mSettingsLoaded |
| + " mBatteryStatusSet=" + mBatteryStatusSet |
| + " mState=" + mState |
| + " mIsBatteryLevelLow=" + mIsBatteryLevelLow |
| + " mIsPowered=" + mIsPowered |
| + " mSettingAutomaticBatterySaver=" + mSettingAutomaticBatterySaver |
| + " mSettingBatterySaverEnabledSticky=" + mSettingBatterySaverEnabledSticky |
| + " mSettingBatterySaverStickyAutoDisableEnabled=" |
| + mSettingBatterySaverStickyAutoDisableEnabled); |
| } |
| if (!(mBootCompleted && mSettingsLoaded && mBatteryStatusSet)) { |
| return; // Not fully initialized yet. |
| } |
| |
| updateStateLocked(false, false); |
| |
| // Adaptive control. |
| if (SystemClock.elapsedRealtime() - mLastAdaptiveBatterySaverChangedExternallyElapsed |
| > ADAPTIVE_CHANGE_TIMEOUT_MS) { |
| mBatterySaverController.setAdaptivePolicyEnabledLocked( |
| false, BatterySaverController.REASON_TIMEOUT); |
| mBatterySaverController.resetAdaptivePolicyLocked( |
| BatterySaverController.REASON_TIMEOUT); |
| } else if (mIsPowered && mBatteryLevel >= ADAPTIVE_AUTO_DISABLE_BATTERY_LEVEL) { |
| mBatterySaverController.setAdaptivePolicyEnabledLocked(false, |
| BatterySaverController.REASON_PLUGGED_IN); |
| } |
| } |
| |
| /** |
| * Update the state machine based on the current settings and battery/charge status. |
| * |
| * @param manual Whether the change was made by the user. |
| * @param enable Whether the user wants to turn battery saver on or off. Is only used if {@param |
| * manual} is true. |
| */ |
| @GuardedBy("mLock") |
| private void updateStateLocked(boolean manual, boolean enable) { |
| if (!manual && !(mBootCompleted && mSettingsLoaded && mBatteryStatusSet)) { |
| return; // Not fully initialized yet. |
| } |
| |
| switch (mState) { |
| case STATE_OFF: { |
| if (!mIsPowered) { |
| if (manual) { |
| if (!enable) { |
| Slog.e(TAG, "Tried to disable BS when it's already OFF"); |
| return; |
| } |
| enableBatterySaverLocked(/*enable*/ true, /*manual*/ true, |
| BatterySaverController.REASON_MANUAL_ON); |
| hideStickyDisabledNotification(); |
| mState = STATE_MANUAL_ON; |
| } else if (isAutomaticModeActiveLocked() && isInAutomaticLowZoneLocked()) { |
| enableBatterySaverLocked(/*enable*/ true, /*manual*/ false, |
| BatterySaverController.REASON_PERCENTAGE_AUTOMATIC_ON); |
| hideStickyDisabledNotification(); |
| mState = STATE_AUTOMATIC_ON; |
| } else if (isDynamicModeActiveLocked() && isInDynamicLowZoneLocked()) { |
| enableBatterySaverLocked(/*enable*/ true, /*manual*/ false, |
| BatterySaverController.REASON_DYNAMIC_POWER_SAVINGS_AUTOMATIC_ON); |
| hideStickyDisabledNotification(); |
| mState = STATE_AUTOMATIC_ON; |
| } |
| } |
| break; |
| } |
| |
| case STATE_MANUAL_ON: { |
| if (manual) { |
| if (enable) { |
| Slog.e(TAG, "Tried to enable BS when it's already MANUAL_ON"); |
| return; |
| } |
| enableBatterySaverLocked(/*enable*/ false, /*manual*/ true, |
| BatterySaverController.REASON_MANUAL_OFF); |
| mState = STATE_OFF; |
| } else if (mIsPowered) { |
| enableBatterySaverLocked(/*enable*/ false, /*manual*/ false, |
| BatterySaverController.REASON_PLUGGED_IN); |
| if (mSettingBatterySaverEnabledSticky |
| && !mBatterySaverStickyBehaviourDisabled) { |
| mState = STATE_PENDING_STICKY_ON; |
| } else { |
| mState = STATE_OFF; |
| } |
| } |
| break; |
| } |
| |
| case STATE_AUTOMATIC_ON: { |
| if (mIsPowered) { |
| enableBatterySaverLocked(/*enable*/ false, /*manual*/ false, |
| BatterySaverController.REASON_PLUGGED_IN); |
| mState = STATE_OFF; |
| } else if (manual) { |
| if (enable) { |
| Slog.e(TAG, "Tried to enable BS when it's already AUTO_ON"); |
| return; |
| } |
| enableBatterySaverLocked(/*enable*/ false, /*manual*/ true, |
| BatterySaverController.REASON_MANUAL_OFF); |
| // When battery saver is disabled manually (while battery saver is enabled) |
| // when the battery level is low, we "snooze" BS -- i.e. disable auto battery |
| // saver. |
| // We resume auto-BS once the battery level is not low, or the device is |
| // plugged in. |
| mState = STATE_OFF_AUTOMATIC_SNOOZED; |
| } else if (isAutomaticModeActiveLocked() && !isInAutomaticLowZoneLocked()) { |
| enableBatterySaverLocked(/*enable*/ false, /*manual*/ false, |
| BatterySaverController.REASON_PERCENTAGE_AUTOMATIC_OFF); |
| mState = STATE_OFF; |
| } else if (isDynamicModeActiveLocked() && !isInDynamicLowZoneLocked()) { |
| enableBatterySaverLocked(/*enable*/ false, /*manual*/ false, |
| BatterySaverController.REASON_DYNAMIC_POWER_SAVINGS_AUTOMATIC_OFF); |
| mState = STATE_OFF; |
| } else if (!isAutomaticModeActiveLocked() && !isDynamicModeActiveLocked()) { |
| enableBatterySaverLocked(/*enable*/ false, /*manual*/ false, |
| BatterySaverController.REASON_SETTING_CHANGED); |
| mState = STATE_OFF; |
| } |
| break; |
| } |
| |
| case STATE_OFF_AUTOMATIC_SNOOZED: { |
| if (manual) { |
| if (!enable) { |
| Slog.e(TAG, "Tried to disable BS when it's already AUTO_SNOOZED"); |
| return; |
| } |
| enableBatterySaverLocked(/*enable*/ true, /*manual*/ true, |
| BatterySaverController.REASON_MANUAL_ON); |
| mState = STATE_MANUAL_ON; |
| } else if (mIsPowered // Plugging in resets snooze. |
| || (isAutomaticModeActiveLocked() && !isInAutomaticLowZoneLocked()) |
| || (isDynamicModeActiveLocked() && !isInDynamicLowZoneLocked()) |
| || (!isAutomaticModeActiveLocked() && !isDynamicModeActiveLocked())) { |
| mState = STATE_OFF; |
| } |
| break; |
| } |
| |
| case STATE_PENDING_STICKY_ON: { |
| if (manual) { |
| // This shouldn't be possible. We'll only be in this state when the device is |
| // plugged in, so the user shouldn't be able to manually change state. |
| Slog.e(TAG, "Tried to manually change BS state from PENDING_STICKY_ON"); |
| return; |
| } |
| final boolean shouldTurnOffSticky = mSettingBatterySaverStickyAutoDisableEnabled |
| && mBatteryLevel >= mSettingBatterySaverStickyAutoDisableThreshold; |
| final boolean isStickyDisabled = |
| mBatterySaverStickyBehaviourDisabled || !mSettingBatterySaverEnabledSticky; |
| if (isStickyDisabled || shouldTurnOffSticky) { |
| mState = STATE_OFF; |
| setStickyActive(false); |
| triggerStickyDisabledNotification(); |
| } else if (!mIsPowered) { |
| // Re-enable BS. |
| enableBatterySaverLocked(/*enable*/ true, /*manual*/ true, |
| BatterySaverController.REASON_STICKY_RESTORE); |
| mState = STATE_MANUAL_ON; |
| } |
| break; |
| } |
| |
| default: |
| Slog.wtf(TAG, "Unknown state: " + mState); |
| break; |
| } |
| } |
| |
| @VisibleForTesting |
| int getState() { |
| synchronized (mLock) { |
| return mState; |
| } |
| } |
| |
| /** |
| * {@link com.android.server.power.PowerManagerService} calls it when |
| * {@link android.os.PowerManager#setPowerSaveModeEnabled} is called. |
| * |
| * Note this could? be called before {@link #onBootCompleted} too. |
| */ |
| public void setBatterySaverEnabledManually(boolean enabled) { |
| if (DEBUG) { |
| Slog.d(TAG, "setBatterySaverEnabledManually: enabled=" + enabled); |
| } |
| synchronized (mLock) { |
| updateStateLocked(true, enabled); |
| // TODO: maybe turn off adaptive if it's on and advertiseIsEnabled is true and |
| // enabled is false |
| } |
| } |
| |
| @GuardedBy("mLock") |
| private void enableBatterySaverLocked(boolean enable, boolean manual, int intReason) { |
| enableBatterySaverLocked(enable, manual, intReason, reasonToString(intReason)); |
| } |
| |
| /** |
| * Actually enable / disable battery saver. Write the new state to the global settings |
| * and propagate it to {@link #mBatterySaverController}. |
| */ |
| @GuardedBy("mLock") |
| private void enableBatterySaverLocked(boolean enable, boolean manual, int intReason, |
| String strReason) { |
| if (DEBUG) { |
| Slog.d(TAG, "enableBatterySaver: enable=" + enable + " manual=" + manual |
| + " reason=" + strReason + "(" + intReason + ")"); |
| } |
| final boolean wasEnabled = mBatterySaverController.isFullEnabled(); |
| |
| if (wasEnabled == enable) { |
| if (DEBUG) { |
| Slog.d(TAG, "Already " + (enable ? "enabled" : "disabled")); |
| } |
| return; |
| } |
| if (enable && mIsPowered) { |
| if (DEBUG) Slog.d(TAG, "Can't enable: isPowered"); |
| return; |
| } |
| mLastChangedIntReason = intReason; |
| mLastChangedStrReason = strReason; |
| |
| mSettingBatterySaverEnabled = enable; |
| putGlobalSetting(Settings.Global.LOW_POWER_MODE, enable ? 1 : 0); |
| |
| if (manual) { |
| setStickyActive(!mBatterySaverStickyBehaviourDisabled && enable); |
| } |
| mBatterySaverController.enableBatterySaver(enable, intReason); |
| |
| // Handle triggering the notification to show/hide when appropriate |
| if (intReason == BatterySaverController.REASON_DYNAMIC_POWER_SAVINGS_AUTOMATIC_ON) { |
| triggerDynamicModeNotification(); |
| } else if (!enable) { |
| hideDynamicModeNotification(); |
| } |
| |
| if (DEBUG) { |
| Slog.d(TAG, "Battery saver: Enabled=" + enable |
| + " manual=" + manual |
| + " reason=" + strReason + "(" + intReason + ")"); |
| } |
| } |
| |
| @VisibleForTesting |
| void triggerDynamicModeNotification() { |
| // The current lock is the PowerManager lock, which sits very low in the service lock |
| // hierarchy. We shouldn't call out to NotificationManager with the PowerManager lock. |
| runOnBgThread(() -> { |
| NotificationManager manager = mContext.getSystemService(NotificationManager.class); |
| ensureNotificationChannelExists(manager, DYNAMIC_MODE_NOTIF_CHANNEL_ID, |
| R.string.dynamic_mode_notification_channel_name); |
| |
| manager.notifyAsUser(TAG, DYNAMIC_MODE_NOTIFICATION_ID, |
| buildNotification(DYNAMIC_MODE_NOTIF_CHANNEL_ID, |
| R.string.dynamic_mode_notification_title, |
| R.string.dynamic_mode_notification_summary, |
| Intent.ACTION_POWER_USAGE_SUMMARY), |
| UserHandle.ALL); |
| }); |
| } |
| |
| @VisibleForTesting |
| void triggerStickyDisabledNotification() { |
| // The current lock is the PowerManager lock, which sits very low in the service lock |
| // hierarchy. We shouldn't call out to NotificationManager with the PowerManager lock. |
| runOnBgThread(() -> { |
| NotificationManager manager = mContext.getSystemService(NotificationManager.class); |
| ensureNotificationChannelExists(manager, BATTERY_SAVER_NOTIF_CHANNEL_ID, |
| R.string.battery_saver_notification_channel_name); |
| |
| manager.notifyAsUser(TAG, STICKY_AUTO_DISABLED_NOTIFICATION_ID, |
| buildNotification(BATTERY_SAVER_NOTIF_CHANNEL_ID, |
| R.string.battery_saver_off_notification_title, |
| R.string.battery_saver_charged_notification_summary, |
| Settings.ACTION_BATTERY_SAVER_SETTINGS), |
| UserHandle.ALL); |
| }); |
| } |
| |
| private void ensureNotificationChannelExists(NotificationManager manager, |
| @NonNull String channelId, @StringRes int nameId) { |
| NotificationChannel channel = new NotificationChannel( |
| channelId, mContext.getText(nameId), NotificationManager.IMPORTANCE_DEFAULT); |
| channel.setSound(null, null); |
| channel.setBlockable(true); |
| manager.createNotificationChannel(channel); |
| } |
| |
| private Notification buildNotification(@NonNull String channelId, @StringRes int titleId, |
| @StringRes int summaryId, @NonNull String intentAction) { |
| Resources res = mContext.getResources(); |
| Intent intent = new Intent(intentAction); |
| intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK); |
| PendingIntent batterySaverIntent = PendingIntent.getActivity( |
| mContext, 0 /* requestCode */, intent, |
| PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_UPDATE_CURRENT); |
| final String title = res.getString(titleId); |
| final String summary = res.getString(summaryId); |
| |
| return new Notification.Builder(mContext, channelId) |
| .setSmallIcon(R.drawable.ic_battery) |
| .setContentTitle(title) |
| .setContentText(summary) |
| .setContentIntent(batterySaverIntent) |
| .setStyle(new Notification.BigTextStyle().bigText(summary)) |
| .setOnlyAlertOnce(true) |
| .setAutoCancel(true) |
| .build(); |
| } |
| |
| private void hideDynamicModeNotification() { |
| hideNotification(DYNAMIC_MODE_NOTIFICATION_ID); |
| } |
| |
| private void hideStickyDisabledNotification() { |
| hideNotification(STICKY_AUTO_DISABLED_NOTIFICATION_ID); |
| } |
| |
| private void hideNotification(int notificationId) { |
| // The current lock is the PowerManager lock, which sits very low in the service lock |
| // hierarchy. We shouldn't call out to NotificationManager with the PowerManager lock. |
| runOnBgThread(() -> { |
| NotificationManager manager = mContext.getSystemService(NotificationManager.class); |
| manager.cancelAsUser(TAG, notificationId, UserHandle.ALL); |
| }); |
| } |
| |
| private void setStickyActive(boolean active) { |
| mSettingBatterySaverEnabledSticky = active; |
| putGlobalSetting(Settings.Global.LOW_POWER_MODE_STICKY, |
| mSettingBatterySaverEnabledSticky ? 1 : 0); |
| } |
| |
| @VisibleForTesting |
| protected void putGlobalSetting(String key, int value) { |
| Settings.Global.putInt(mContext.getContentResolver(), key, value); |
| } |
| |
| @VisibleForTesting |
| protected int getGlobalSetting(String key, int defValue) { |
| return Settings.Global.getInt(mContext.getContentResolver(), key, defValue); |
| } |
| |
| public void dump(PrintWriter pw) { |
| final IndentingPrintWriter ipw = new IndentingPrintWriter(pw, " "); |
| |
| ipw.println(); |
| ipw.println("Battery saver state machine:"); |
| ipw.increaseIndent(); |
| synchronized (mLock) { |
| ipw.print("Enabled="); |
| ipw.println(mBatterySaverController.isEnabled()); |
| ipw.increaseIndent(); |
| ipw.print("full="); |
| ipw.println(mBatterySaverController.isFullEnabled()); |
| ipw.print("adaptive="); |
| ipw.print(mBatterySaverController.isAdaptiveEnabled()); |
| if (mBatterySaverController.isAdaptiveEnabled()) { |
| ipw.print(" (advertise="); |
| ipw.print( |
| mBatterySaverController.getBatterySaverPolicy().shouldAdvertiseIsEnabled()); |
| ipw.print(")"); |
| } |
| ipw.decreaseIndent(); |
| ipw.println(); |
| ipw.print("mState="); |
| ipw.println(mState); |
| |
| ipw.print("mLastChangedIntReason="); |
| ipw.println(mLastChangedIntReason); |
| ipw.print("mLastChangedStrReason="); |
| ipw.println(mLastChangedStrReason); |
| |
| ipw.print("mBootCompleted="); |
| ipw.println(mBootCompleted); |
| ipw.print("mSettingsLoaded="); |
| ipw.println(mSettingsLoaded); |
| ipw.print("mBatteryStatusSet="); |
| ipw.println(mBatteryStatusSet); |
| |
| ipw.print("mIsPowered="); |
| ipw.println(mIsPowered); |
| ipw.print("mBatteryLevel="); |
| ipw.println(mBatteryLevel); |
| ipw.print("mIsBatteryLevelLow="); |
| ipw.println(mIsBatteryLevelLow); |
| |
| ipw.print("mSettingAutomaticBatterySaver="); |
| ipw.println(mSettingAutomaticBatterySaver); |
| ipw.print("mSettingBatterySaverEnabled="); |
| ipw.println(mSettingBatterySaverEnabled); |
| ipw.print("mSettingBatterySaverEnabledSticky="); |
| ipw.println(mSettingBatterySaverEnabledSticky); |
| ipw.print("mSettingBatterySaverStickyAutoDisableEnabled="); |
| ipw.println(mSettingBatterySaverStickyAutoDisableEnabled); |
| ipw.print("mSettingBatterySaverStickyAutoDisableThreshold="); |
| ipw.println(mSettingBatterySaverStickyAutoDisableThreshold); |
| ipw.print("mSettingBatterySaverTriggerThreshold="); |
| ipw.println(mSettingBatterySaverTriggerThreshold); |
| ipw.print("mBatterySaverStickyBehaviourDisabled="); |
| ipw.println(mBatterySaverStickyBehaviourDisabled); |
| |
| ipw.print("mDynamicPowerSavingsDefaultDisableThreshold="); |
| ipw.println(mDynamicPowerSavingsDefaultDisableThreshold); |
| ipw.print("mDynamicPowerSavingsDisableThreshold="); |
| ipw.println(mDynamicPowerSavingsDisableThreshold); |
| ipw.print("mDynamicPowerSavingsEnableBatterySaver="); |
| ipw.println(mDynamicPowerSavingsEnableBatterySaver); |
| |
| ipw.print("mLastAdaptiveBatterySaverChangedExternallyElapsed="); |
| ipw.println(mLastAdaptiveBatterySaverChangedExternallyElapsed); |
| } |
| ipw.decreaseIndent(); |
| } |
| |
| public void dumpProto(ProtoOutputStream proto, long tag) { |
| synchronized (mLock) { |
| final long token = proto.start(tag); |
| |
| proto.write(BatterySaverStateMachineProto.ENABLED, |
| mBatterySaverController.isEnabled()); |
| proto.write(BatterySaverStateMachineProto.STATE, mState); |
| proto.write(BatterySaverStateMachineProto.IS_FULL_ENABLED, |
| mBatterySaverController.isFullEnabled()); |
| proto.write(BatterySaverStateMachineProto.IS_ADAPTIVE_ENABLED, |
| mBatterySaverController.isAdaptiveEnabled()); |
| proto.write(BatterySaverStateMachineProto.SHOULD_ADVERTISE_IS_ENABLED, |
| mBatterySaverController.getBatterySaverPolicy().shouldAdvertiseIsEnabled()); |
| |
| proto.write(BatterySaverStateMachineProto.BOOT_COMPLETED, mBootCompleted); |
| proto.write(BatterySaverStateMachineProto.SETTINGS_LOADED, mSettingsLoaded); |
| proto.write(BatterySaverStateMachineProto.BATTERY_STATUS_SET, mBatteryStatusSet); |
| |
| |
| proto.write(BatterySaverStateMachineProto.IS_POWERED, mIsPowered); |
| proto.write(BatterySaverStateMachineProto.BATTERY_LEVEL, mBatteryLevel); |
| proto.write(BatterySaverStateMachineProto.IS_BATTERY_LEVEL_LOW, mIsBatteryLevelLow); |
| |
| proto.write(BatterySaverStateMachineProto.SETTING_AUTOMATIC_TRIGGER, |
| mSettingAutomaticBatterySaver); |
| proto.write(BatterySaverStateMachineProto.SETTING_BATTERY_SAVER_ENABLED, |
| mSettingBatterySaverEnabled); |
| proto.write(BatterySaverStateMachineProto.SETTING_BATTERY_SAVER_ENABLED_STICKY, |
| mSettingBatterySaverEnabledSticky); |
| proto.write(BatterySaverStateMachineProto.SETTING_BATTERY_SAVER_TRIGGER_THRESHOLD, |
| mSettingBatterySaverTriggerThreshold); |
| proto.write( |
| BatterySaverStateMachineProto.SETTING_BATTERY_SAVER_STICKY_AUTO_DISABLE_ENABLED, |
| mSettingBatterySaverStickyAutoDisableEnabled); |
| proto.write( |
| BatterySaverStateMachineProto |
| .SETTING_BATTERY_SAVER_STICKY_AUTO_DISABLE_THRESHOLD, |
| mSettingBatterySaverStickyAutoDisableThreshold); |
| |
| proto.write( |
| BatterySaverStateMachineProto.DEFAULT_DYNAMIC_DISABLE_THRESHOLD, |
| mDynamicPowerSavingsDefaultDisableThreshold); |
| proto.write( |
| BatterySaverStateMachineProto.DYNAMIC_DISABLE_THRESHOLD, |
| mDynamicPowerSavingsDisableThreshold); |
| proto.write( |
| BatterySaverStateMachineProto.DYNAMIC_BATTERY_SAVER_ENABLED, |
| mDynamicPowerSavingsEnableBatterySaver); |
| |
| proto.write( |
| BatterySaverStateMachineProto |
| .LAST_ADAPTIVE_BATTERY_SAVER_CHANGED_EXTERNALLY_ELAPSED, |
| mLastAdaptiveBatterySaverChangedExternallyElapsed); |
| |
| proto.end(token); |
| } |
| } |
| } |
