| /* |
| * Copyright (C) 2015 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.car; |
| |
| import android.annotation.NonNull; |
| import android.annotation.UserIdInt; |
| import android.app.ActivityManager; |
| import android.car.Car; |
| import android.car.hardware.power.CarPowerManager.CarPowerStateListener; |
| import android.car.hardware.power.ICarPower; |
| import android.car.hardware.power.ICarPowerStateListener; |
| import android.car.userlib.HalCallback; |
| import android.car.userlib.InitialUserSetter; |
| import android.car.userlib.InitialUserSetter.InitialUserInfoType; |
| import android.car.userlib.UserHalHelper; |
| import android.car.userlib.UserHelper; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.UserInfo; |
| import android.content.res.Resources; |
| import android.hardware.automotive.vehicle.V2_0.InitialUserInfoRequestType; |
| import android.hardware.automotive.vehicle.V2_0.InitialUserInfoResponseAction; |
| import android.hardware.automotive.vehicle.V2_0.VehicleApPowerStateReq; |
| import android.net.wifi.WifiManager; |
| import android.os.Build; |
| import android.os.Handler; |
| import android.os.HandlerThread; |
| import android.os.IBinder; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.PowerManager; |
| import android.os.RemoteCallbackList; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.os.SystemClock; |
| import android.os.SystemProperties; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.sysprop.CarProperties; |
| import android.util.AtomicFile; |
| import android.util.Slog; |
| |
| import com.android.car.am.ContinuousBlankActivity; |
| import com.android.car.hal.PowerHalService; |
| import com.android.car.hal.PowerHalService.PowerState; |
| import com.android.car.systeminterface.SystemInterface; |
| import com.android.car.user.CarUserNoticeService; |
| import com.android.car.user.CarUserService; |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.internal.app.IVoiceInteractionManagerService; |
| |
| import java.io.BufferedReader; |
| import java.io.BufferedWriter; |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.io.OutputStreamWriter; |
| import java.io.PrintWriter; |
| import java.lang.ref.WeakReference; |
| import java.nio.charset.StandardCharsets; |
| import java.util.HashSet; |
| import java.util.LinkedList; |
| import java.util.Set; |
| import java.util.Timer; |
| import java.util.TimerTask; |
| |
| /** |
| * Power Management service class for cars. Controls the power states and interacts with other |
| * parts of the system to ensure its own state. |
| */ |
| public class CarPowerManagementService extends ICarPower.Stub implements |
| CarServiceBase, PowerHalService.PowerEventListener { |
| |
| // TODO: replace all usage |
| private static final String TAG = CarLog.TAG_POWER; |
| private static final String WIFI_STATE_FILENAME = "wifi_state"; |
| private static final String WIFI_STATE_MODIFIED = "forcibly_disabled"; |
| private static final String WIFI_STATE_ORIGINAL = "original"; |
| // If Suspend to RAM fails, we retry with an exponential back-off: |
| // The wait interval will be 10 msec, 20 msec, 40 msec, ... |
| // Once the wait interval goes beyond 1000 msec, it is fixed at 1000 msec. |
| private static final long INITIAL_SUSPEND_RETRY_INTERVAL_MS = 10; |
| private static final long MAX_RETRY_INTERVAL_MS = 1000; |
| // Minimum and maximum wait duration before the system goes into Suspend to RAM. |
| private static final long MIN_SUSPEND_WAIT_DURATION_MS = 0; |
| private static final long MAX_SUSPEND_WAIT_DURATION_MS = 3 * 60 * 1000; |
| |
| private final Object mLock = new Object(); |
| private final Object mSimulationWaitObject = new Object(); |
| |
| private final Context mContext; |
| private final PowerHalService mHal; |
| private final SystemInterface mSystemInterface; |
| // The listeners that complete simply by returning from onStateChanged() |
| private final PowerManagerCallbackList mPowerManagerListeners = new PowerManagerCallbackList(); |
| // The listeners that must indicate asynchronous completion by calling finished(). |
| private final PowerManagerCallbackList mPowerManagerListenersWithCompletion = |
| new PowerManagerCallbackList(); |
| |
| @GuardedBy("mSimulationWaitObject") |
| private boolean mWakeFromSimulatedSleep; |
| @GuardedBy("mSimulationWaitObject") |
| private boolean mInSimulatedDeepSleepMode; |
| |
| @GuardedBy("mLock") |
| private final Set<IBinder> mListenersWeAreWaitingFor = new HashSet<>(); |
| @GuardedBy("mLock") |
| private CpmsState mCurrentState; |
| @GuardedBy("mLock") |
| private Timer mTimer; |
| @GuardedBy("mLock") |
| private long mProcessingStartTime; |
| @GuardedBy("mLock") |
| private long mLastSleepEntryTime; |
| @GuardedBy("mLock") |
| private final LinkedList<CpmsState> mPendingPowerStates = new LinkedList<>(); |
| private final HandlerThread mHandlerThread = CarServiceUtils.getHandlerThread( |
| getClass().getSimpleName()); |
| private final PowerHandler mHandler = new PowerHandler(mHandlerThread.getLooper(), this); |
| |
| @GuardedBy("mLock") |
| private boolean mTimerActive; |
| @GuardedBy("mLock") |
| private int mNextWakeupSec; |
| @GuardedBy("mLock") |
| private boolean mShutdownOnFinish; |
| @GuardedBy("mLock") |
| private boolean mShutdownOnNextSuspend; |
| @GuardedBy("mLock") |
| private boolean mIsBooting = true; |
| @GuardedBy("mLock") |
| private boolean mIsResuming; |
| @GuardedBy("mLock") |
| private int mShutdownPrepareTimeMs = MIN_MAX_GARAGE_MODE_DURATION_MS; |
| @GuardedBy("mLock") |
| private int mShutdownPollingIntervalMs = SHUTDOWN_POLLING_INTERVAL_MS; |
| @GuardedBy("mLock") |
| private boolean mRebootAfterGarageMode; |
| @GuardedBy("mLock") |
| private boolean mGarageModeShouldExitImmediately; |
| private final boolean mDisableUserSwitchDuringResume; |
| |
| private final UserManager mUserManager; |
| private final CarUserService mUserService; |
| private final InitialUserSetter mInitialUserSetter; |
| |
| private final IVoiceInteractionManagerService mVoiceInteractionManagerService; |
| |
| private final WifiManager mWifiManager; |
| private final AtomicFile mWifiStateFile; |
| |
| // TODO: Make this OEM configurable. |
| private static final int SHUTDOWN_POLLING_INTERVAL_MS = 2000; |
| private static final int SHUTDOWN_EXTEND_MAX_MS = 5000; |
| |
| // maxGarageModeRunningDurationInSecs should be equal or greater than this. 15 min for now. |
| private static final int MIN_MAX_GARAGE_MODE_DURATION_MS = 15 * 60 * 1000; |
| |
| // in secs |
| private static final String PROP_MAX_GARAGE_MODE_DURATION_OVERRIDE = |
| "android.car.garagemodeduration"; |
| |
| // This is a temp work-around to reduce user switching delay after wake-up. |
| private final boolean mSwitchGuestUserBeforeSleep; |
| |
| // CPMS tries to enter Suspend to RAM within the duration specified at |
| // mMaxSuspendWaitDurationMs. The default max duration is MAX_SUSPEND_WAIT_DURATION, and can be |
| // overridden by setting config_maxSuspendWaitDuration in an overrlay resource. |
| // The valid range is MIN_SUSPEND_WAIT_DRATION to MAX_SUSPEND_WAIT_DURATION. |
| private final long mMaxSuspendWaitDurationMs; |
| |
| private class PowerManagerCallbackList extends RemoteCallbackList<ICarPowerStateListener> { |
| /** |
| * Old version of {@link #onCallbackDied(E, Object)} that |
| * does not provide a cookie. |
| */ |
| @Override |
| public void onCallbackDied(ICarPowerStateListener listener) { |
| Slog.i(TAG, "binderDied " + listener.asBinder()); |
| CarPowerManagementService.this.doUnregisterListener(listener); |
| } |
| } |
| |
| public CarPowerManagementService(Context context, PowerHalService powerHal, |
| SystemInterface systemInterface, CarUserService carUserService) { |
| this(context, context.getResources(), powerHal, systemInterface, UserManager.get(context), |
| carUserService, new InitialUserSetter(context, |
| (u) -> carUserService.setInitialUser(u), |
| context.getString(R.string.default_guest_name)), |
| IVoiceInteractionManagerService.Stub.asInterface( |
| ServiceManager.getService(Context.VOICE_INTERACTION_MANAGER_SERVICE))); |
| } |
| |
| @VisibleForTesting |
| public CarPowerManagementService(Context context, Resources resources, PowerHalService powerHal, |
| SystemInterface systemInterface, UserManager userManager, CarUserService carUserService, |
| InitialUserSetter initialUserSetter, |
| IVoiceInteractionManagerService voiceInteractionService) { |
| mContext = context; |
| mHal = powerHal; |
| mSystemInterface = systemInterface; |
| mUserManager = userManager; |
| mDisableUserSwitchDuringResume = resources |
| .getBoolean(R.bool.config_disableUserSwitchDuringResume); |
| mShutdownPrepareTimeMs = resources.getInteger( |
| R.integer.maxGarageModeRunningDurationInSecs) * 1000; |
| mSwitchGuestUserBeforeSleep = resources.getBoolean( |
| R.bool.config_switchGuestUserBeforeGoingSleep); |
| if (mShutdownPrepareTimeMs < MIN_MAX_GARAGE_MODE_DURATION_MS) { |
| Slog.w(TAG, |
| "maxGarageModeRunningDurationInSecs smaller than minimum required, resource:" |
| + mShutdownPrepareTimeMs + "(ms) while should exceed:" |
| + MIN_MAX_GARAGE_MODE_DURATION_MS + "(ms), Ignore resource."); |
| mShutdownPrepareTimeMs = MIN_MAX_GARAGE_MODE_DURATION_MS; |
| } |
| mUserService = carUserService; |
| mInitialUserSetter = initialUserSetter; |
| mVoiceInteractionManagerService = voiceInteractionService; |
| mWifiManager = context.getSystemService(WifiManager.class); |
| mWifiStateFile = new AtomicFile( |
| new File(mSystemInterface.getSystemCarDir(), WIFI_STATE_FILENAME)); |
| mMaxSuspendWaitDurationMs = Math.max(MIN_SUSPEND_WAIT_DURATION_MS, |
| Math.min(getMaxSuspendWaitDurationConfig(), MAX_SUSPEND_WAIT_DURATION_MS)); |
| } |
| |
| @VisibleForTesting |
| public void setShutdownTimersForTest(int pollingIntervalMs, int shutdownTimeoutMs) { |
| // Override timers to keep testing time short |
| // Passing in '0' resets the value to the default |
| synchronized (mLock) { |
| mShutdownPollingIntervalMs = |
| (pollingIntervalMs == 0) ? SHUTDOWN_POLLING_INTERVAL_MS : pollingIntervalMs; |
| mShutdownPrepareTimeMs = |
| (shutdownTimeoutMs == 0) ? SHUTDOWN_EXTEND_MAX_MS : shutdownTimeoutMs; |
| } |
| } |
| |
| @VisibleForTesting |
| protected HandlerThread getHandlerThread() { |
| return mHandlerThread; |
| } |
| |
| @Override |
| public void init() { |
| mHal.setListener(this); |
| if (mHal.isPowerStateSupported()) { |
| // Initialize CPMS in WAIT_FOR_VHAL state |
| onApPowerStateChange(CpmsState.WAIT_FOR_VHAL, CarPowerStateListener.WAIT_FOR_VHAL); |
| } else { |
| Slog.w(TAG, "Vehicle hal does not support power state yet."); |
| onApPowerStateChange(CpmsState.ON, CarPowerStateListener.ON); |
| } |
| mSystemInterface.startDisplayStateMonitoring(this); |
| } |
| |
| @Override |
| public void release() { |
| synchronized (mLock) { |
| releaseTimerLocked(); |
| mCurrentState = null; |
| mHandler.cancelAll(); |
| mListenersWeAreWaitingFor.clear(); |
| } |
| mSystemInterface.stopDisplayStateMonitoring(); |
| mPowerManagerListeners.kill(); |
| mSystemInterface.releaseAllWakeLocks(); |
| } |
| |
| @Override |
| public void dump(PrintWriter writer) { |
| synchronized (mLock) { |
| writer.println("*PowerManagementService*"); |
| // TODO: split it in multiple lines |
| // TODO: lock only what's needed |
| writer.print("mCurrentState:" + mCurrentState); |
| writer.print(",mProcessingStartTime:" + mProcessingStartTime); |
| writer.print(",mLastSleepEntryTime:" + mLastSleepEntryTime); |
| writer.print(",mNextWakeupSec:" + mNextWakeupSec); |
| writer.print(",mShutdownOnNextSuspend:" + mShutdownOnNextSuspend); |
| writer.print(",mShutdownOnFinish:" + mShutdownOnFinish); |
| writer.print(",mShutdownPollingIntervalMs:" + mShutdownPollingIntervalMs); |
| writer.print(",mShutdownPrepareTimeMs:" + mShutdownPrepareTimeMs); |
| writer.print(",mDisableUserSwitchDuringResume:" + mDisableUserSwitchDuringResume); |
| writer.println(",mRebootAfterGarageMode:" + mRebootAfterGarageMode); |
| writer.println("mSwitchGuestUserBeforeSleep:" + mSwitchGuestUserBeforeSleep); |
| writer.print("mMaxSuspendWaitDurationMs:" + mMaxSuspendWaitDurationMs); |
| writer.println(", config_maxSuspendWaitDuration:" + getMaxSuspendWaitDurationConfig()); |
| } |
| mInitialUserSetter.dump(writer); |
| } |
| |
| @Override |
| public void onApPowerStateChange(PowerState state) { |
| synchronized (mLock) { |
| mPendingPowerStates.addFirst(new CpmsState(state)); |
| mLock.notify(); |
| } |
| mHandler.handlePowerStateChange(); |
| } |
| |
| @VisibleForTesting |
| void setStateForTesting(boolean isBooting, boolean isResuming) { |
| synchronized (mLock) { |
| Slog.d(TAG, "setStateForTesting():" |
| + " booting(" + mIsBooting + ">" + isBooting + ")" |
| + " resuming(" + mIsResuming + ">" + isResuming + ")"); |
| mIsBooting = isBooting; |
| mIsResuming = isResuming; |
| } |
| } |
| |
| /** |
| * Initiate state change from CPMS directly. |
| */ |
| private void onApPowerStateChange(int apState, int carPowerStateListenerState) { |
| CpmsState newState = new CpmsState(apState, carPowerStateListenerState); |
| synchronized (mLock) { |
| mPendingPowerStates.addFirst(newState); |
| mLock.notify(); |
| } |
| mHandler.handlePowerStateChange(); |
| } |
| |
| private void doHandlePowerStateChange() { |
| CpmsState state; |
| synchronized (mLock) { |
| state = mPendingPowerStates.peekFirst(); |
| mPendingPowerStates.clear(); |
| if (state == null) { |
| Slog.e(TAG, "Null power state was requested"); |
| return; |
| } |
| Slog.i(TAG, "doHandlePowerStateChange: newState=" + state.name()); |
| if (!needPowerStateChangeLocked(state)) { |
| return; |
| } |
| // now real power change happens. Whatever was queued before should be all cancelled. |
| releaseTimerLocked(); |
| } |
| mHandler.cancelProcessingComplete(); |
| Slog.i(TAG, "setCurrentState " + state.toString()); |
| CarStatsLogHelper.logPowerState(state.mState); |
| mCurrentState = state; |
| switch (state.mState) { |
| case CpmsState.WAIT_FOR_VHAL: |
| handleWaitForVhal(state); |
| break; |
| case CpmsState.ON: |
| handleOn(); |
| break; |
| case CpmsState.SHUTDOWN_PREPARE: |
| handleShutdownPrepare(state); |
| break; |
| case CpmsState.SIMULATE_SLEEP: |
| simulateShutdownPrepare(); |
| break; |
| case CpmsState.WAIT_FOR_FINISH: |
| handleWaitForFinish(state); |
| break; |
| case CpmsState.SUSPEND: |
| // Received FINISH from VHAL |
| handleFinish(); |
| break; |
| default: |
| // Illegal state |
| // TODO: Throw exception? |
| break; |
| } |
| } |
| |
| private void handleWaitForVhal(CpmsState state) { |
| int carPowerStateListenerState = state.mCarPowerStateListenerState; |
| sendPowerManagerEvent(carPowerStateListenerState); |
| // Inspect CarPowerStateListenerState to decide which message to send via VHAL |
| switch (carPowerStateListenerState) { |
| case CarPowerStateListener.WAIT_FOR_VHAL: |
| mHal.sendWaitForVhal(); |
| break; |
| case CarPowerStateListener.SHUTDOWN_CANCELLED: |
| mShutdownOnNextSuspend = false; // This cancels the "NextSuspend" |
| mHal.sendShutdownCancel(); |
| break; |
| case CarPowerStateListener.SUSPEND_EXIT: |
| mHal.sendSleepExit(); |
| break; |
| } |
| restoreWifi(); |
| } |
| |
| private void updateCarUserNoticeServiceIfNecessary() { |
| try { |
| int currentUserId = ActivityManager.getCurrentUser(); |
| UserInfo currentUserInfo = mUserManager.getUserInfo(currentUserId); |
| CarUserNoticeService carUserNoticeService = |
| CarLocalServices.getService(CarUserNoticeService.class); |
| if (currentUserInfo != null && currentUserInfo.isGuest() |
| && carUserNoticeService != null) { |
| Slog.i(TAG, "Car user notice service will ignore all messages before user switch."); |
| Intent intent = new Intent(); |
| intent.setComponent(new ComponentName(mContext.getPackageName(), |
| ContinuousBlankActivity.class.getName())); |
| intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); |
| mContext.startActivityAsUser(intent, UserHandle.CURRENT); |
| carUserNoticeService.ignoreUserNotice(currentUserId); |
| } |
| } catch (Exception e) { |
| Slog.w(TAG, "Cannot ignore user notice for current user", e); |
| } |
| } |
| |
| private void handleOn() { |
| // If current user is a Guest User, we want to inform CarUserNoticeService not to show |
| // notice for current user, and show user notice only for the target user. |
| if (!mSwitchGuestUserBeforeSleep) { |
| updateCarUserNoticeServiceIfNecessary(); |
| } |
| |
| // Some OEMs have their own user-switching logic, which may not be coordinated with this |
| // code. To avoid contention, we don't switch users when we coming alive. The OEM's code |
| // should do the switch. |
| boolean allowUserSwitch = true; |
| synchronized (mLock) { |
| if (mIsBooting) { |
| // The system is booting, so don't switch users |
| allowUserSwitch = false; |
| mIsBooting = false; |
| mIsResuming = false; |
| Slog.i(TAG, "User switch disallowed while booting"); |
| } else { |
| // The system is resuming after a suspension. Optionally disable user switching. |
| allowUserSwitch = !mDisableUserSwitchDuringResume; |
| mIsBooting = false; |
| mIsResuming = false; |
| if (!allowUserSwitch) { |
| Slog.i(TAG, "User switch disallowed while resuming"); |
| } |
| } |
| } |
| |
| mSystemInterface.setDisplayState(true); |
| sendPowerManagerEvent(CarPowerStateListener.ON); |
| |
| mHal.sendOn(); |
| |
| try { |
| switchUserOnResumeIfNecessary(allowUserSwitch); |
| } catch (Exception e) { |
| Slog.e(TAG, "Could not switch user on resume", e); |
| } |
| |
| setVoiceInteractionDisabled(false); |
| } |
| |
| @VisibleForTesting // Ideally it should not be exposed, but it speeds up the unit tests |
| void switchUserOnResumeIfNecessary(boolean allowSwitching) { |
| Slog.d(TAG, "switchUserOnResumeIfNecessary(): allowSwitching=" + allowSwitching |
| + ", mSwitchGuestUserBeforeSleep=" + mSwitchGuestUserBeforeSleep); |
| if (!allowSwitching) { |
| if (mSwitchGuestUserBeforeSleep) { // already handled |
| return; |
| } |
| switchToNewGuestIfNecessary(); |
| return; |
| } |
| |
| if (CarProperties.user_hal_enabled().orElse(false) && mUserService.isUserHalSupported()) { |
| switchUserOnResumeIfNecessaryUsingHal(); |
| return; |
| } |
| |
| executeDefaultInitialUserBehavior(!mSwitchGuestUserBeforeSleep); |
| } |
| |
| private void executeDefaultInitialUserBehavior(boolean replaceGuest) { |
| mInitialUserSetter.set(newInitialUserInfoBuilder(InitialUserSetter.TYPE_DEFAULT_BEHAVIOR) |
| .setReplaceGuest(replaceGuest) |
| .build()); |
| } |
| |
| /** |
| * Replaces the current user if it's a guest. |
| */ |
| private void switchToNewGuestIfNecessary() { |
| int currentUserId = ActivityManager.getCurrentUser(); |
| UserInfo currentUser = mUserManager.getUserInfo(currentUserId); |
| |
| if (!mInitialUserSetter.canReplaceGuestUser(currentUser)) return; // Not a guest |
| |
| mInitialUserSetter.set(newInitialUserInfoBuilder(InitialUserSetter.TYPE_REPLACE_GUEST) |
| .build()); |
| } |
| |
| private void switchUser(@UserIdInt int userId, boolean replaceGuest) { |
| mInitialUserSetter.set(newInitialUserInfoBuilder(InitialUserSetter.TYPE_SWITCH) |
| .setSwitchUserId(userId).setReplaceGuest(replaceGuest).build()); |
| } |
| |
| private InitialUserSetter.Builder newInitialUserInfoBuilder(@InitialUserInfoType int type) { |
| return new InitialUserSetter.Builder(type) |
| .setSupportsOverrideUserIdProperty(!mUserService.isUserHalSupported()); |
| } |
| |
| /** |
| * Tells Garage Mode if it should run normally, or just |
| * exit immediately without indicating 'idle' |
| * @return True if no idle jobs should be run |
| * @hide |
| */ |
| public boolean garageModeShouldExitImmediately() { |
| synchronized (mLock) { |
| return mGarageModeShouldExitImmediately; |
| } |
| } |
| |
| /** |
| * Switches the initial user by calling the User HAL to define the behavior. |
| */ |
| private void switchUserOnResumeIfNecessaryUsingHal() { |
| Slog.i(TAG, "Using User HAL to define initial user behavior"); |
| mUserService.getInitialUserInfo(InitialUserInfoRequestType.RESUME, (status, response) -> { |
| switch (status) { |
| case HalCallback.STATUS_HAL_RESPONSE_TIMEOUT: |
| case HalCallback.STATUS_HAL_SET_TIMEOUT: |
| switchUserOnResumeUserHalFallback("timeout"); |
| return; |
| case HalCallback.STATUS_CONCURRENT_OPERATION: |
| switchUserOnResumeUserHalFallback("concurrent call"); |
| return; |
| case HalCallback.STATUS_WRONG_HAL_RESPONSE: |
| switchUserOnResumeUserHalFallback("wrong response"); |
| return; |
| case HalCallback.STATUS_HAL_NOT_SUPPORTED: |
| switchUserOnResumeUserHalFallback("Hal not supported"); |
| return; |
| case HalCallback.STATUS_OK: |
| if (response == null) { |
| switchUserOnResumeUserHalFallback("no response"); |
| return; |
| } |
| boolean replaceGuest = !mSwitchGuestUserBeforeSleep; |
| switch (response.action) { |
| case InitialUserInfoResponseAction.DEFAULT: |
| Slog.i(TAG, "HAL requested default initial user behavior"); |
| executeDefaultInitialUserBehavior(replaceGuest); |
| return; |
| case InitialUserInfoResponseAction.SWITCH: |
| int userId = response.userToSwitchOrCreate.userId; |
| Slog.i(TAG, "HAL requested switch to user " + userId); |
| // If guest was replaced on shutdown, it doesn't need to be replaced |
| // again |
| switchUser(userId, replaceGuest); |
| return; |
| case InitialUserInfoResponseAction.CREATE: |
| int halFlags = response.userToSwitchOrCreate.flags; |
| String name = response.userNameToCreate; |
| Slog.i(TAG, "HAL requested new user (name=" |
| + UserHelper.safeName(name) + ", flags=" |
| + UserHalHelper.userFlagsToString(halFlags) + ")"); |
| mInitialUserSetter |
| .set(newInitialUserInfoBuilder(InitialUserSetter.TYPE_CREATE) |
| .setNewUserName(name) |
| .setNewUserFlags(halFlags) |
| .build()); |
| return; |
| default: |
| switchUserOnResumeUserHalFallback( |
| "invalid response action: " + response.action); |
| return; |
| } |
| default: |
| switchUserOnResumeUserHalFallback("invalid status: " + status); |
| } |
| }); |
| } |
| |
| /** |
| * Switches the initial user directly when the User HAL call failed. |
| */ |
| private void switchUserOnResumeUserHalFallback(String reason) { |
| Slog.w(TAG, "Failed to set initial user based on User Hal (" + reason |
| + "); falling back to default behavior"); |
| executeDefaultInitialUserBehavior(!mSwitchGuestUserBeforeSleep); |
| } |
| |
| private void handleShutdownPrepare(CpmsState newState) { |
| setVoiceInteractionDisabled(true); |
| mSystemInterface.setDisplayState(false); |
| // Shutdown on finish if the system doesn't support deep sleep or doesn't allow it. |
| synchronized (mLock) { |
| mShutdownOnFinish = mShutdownOnNextSuspend |
| || !mHal.isDeepSleepAllowed() |
| || !mSystemInterface.isSystemSupportingDeepSleep() |
| || !newState.mCanSleep; |
| mGarageModeShouldExitImmediately = !newState.mCanPostpone; |
| } |
| Slog.i(TAG, |
| (newState.mCanPostpone |
| ? "starting shutdown prepare with Garage Mode" |
| : "starting shutdown prepare without Garage Mode")); |
| sendPowerManagerEvent(CarPowerStateListener.SHUTDOWN_PREPARE); |
| mHal.sendShutdownPrepare(); |
| doHandlePreprocessing(); |
| } |
| |
| // Simulate system shutdown to Deep Sleep |
| private void simulateShutdownPrepare() { |
| mSystemInterface.setDisplayState(false); |
| Slog.i(TAG, "starting shutdown prepare"); |
| sendPowerManagerEvent(CarPowerStateListener.SHUTDOWN_PREPARE); |
| mHal.sendShutdownPrepare(); |
| doHandlePreprocessing(); |
| } |
| |
| private void handleWaitForFinish(CpmsState state) { |
| sendPowerManagerEvent(state.mCarPowerStateListenerState); |
| int wakeupSec; |
| synchronized (mLock) { |
| // If we're shutting down immediately, don't schedule |
| // a wakeup time. |
| wakeupSec = mGarageModeShouldExitImmediately ? 0 : mNextWakeupSec; |
| } |
| switch (state.mCarPowerStateListenerState) { |
| case CarPowerStateListener.SUSPEND_ENTER: |
| mHal.sendSleepEntry(wakeupSec); |
| break; |
| case CarPowerStateListener.SHUTDOWN_ENTER: |
| mHal.sendShutdownStart(wakeupSec); |
| break; |
| } |
| } |
| |
| private void handleFinish() { |
| boolean simulatedMode; |
| synchronized (mSimulationWaitObject) { |
| simulatedMode = mInSimulatedDeepSleepMode; |
| } |
| boolean mustShutDown; |
| boolean forceReboot; |
| synchronized (mLock) { |
| mustShutDown = mShutdownOnFinish && !simulatedMode; |
| forceReboot = mRebootAfterGarageMode; |
| mRebootAfterGarageMode = false; |
| } |
| if (forceReboot) { |
| PowerManager powerManager = mContext.getSystemService(PowerManager.class); |
| if (powerManager == null) { |
| Slog.wtf(TAG, "No PowerManager. Cannot reboot."); |
| } else { |
| Slog.i(TAG, "GarageMode has completed. Forcing reboot."); |
| powerManager.reboot("GarageModeReboot"); |
| throw new AssertionError("Should not return from PowerManager.reboot()"); |
| } |
| } |
| setVoiceInteractionDisabled(true); |
| |
| // To make Kernel implementation simpler when going into sleep. |
| disableWifi(); |
| |
| if (mustShutDown) { |
| // shutdown HU |
| mSystemInterface.shutdown(); |
| } else { |
| doHandleDeepSleep(simulatedMode); |
| } |
| mShutdownOnNextSuspend = false; |
| } |
| |
| private void setVoiceInteractionDisabled(boolean disabled) { |
| try { |
| mVoiceInteractionManagerService.setDisabled(disabled); |
| } catch (RemoteException e) { |
| Slog.w(TAG, "setVoiceIntefactionDisabled(" + disabled + ") failed", e); |
| } |
| } |
| |
| private void restoreWifi() { |
| boolean needToRestore = readWifiModifiedState(); |
| if (needToRestore) { |
| if (!mWifiManager.isWifiEnabled()) { |
| Slog.i(TAG, "Wifi has been enabled to restore the last setting"); |
| mWifiManager.setWifiEnabled(true); |
| } |
| // Update the persistent data as wifi is not modified by car framework. |
| saveWifiModifiedState(false); |
| } |
| } |
| |
| private void disableWifi() { |
| boolean wifiEnabled = mWifiManager.isWifiEnabled(); |
| boolean wifiModifiedState = readWifiModifiedState(); |
| if (wifiEnabled != wifiModifiedState) { |
| saveWifiModifiedState(wifiEnabled); |
| } |
| if (!wifiEnabled) return; |
| |
| mWifiManager.setWifiEnabled(false); |
| wifiEnabled = mWifiManager.isWifiEnabled(); |
| Slog.i(TAG, "Wifi has been disabled and the last setting was saved"); |
| } |
| |
| private void saveWifiModifiedState(boolean forciblyDisabled) { |
| FileOutputStream fos; |
| try { |
| fos = mWifiStateFile.startWrite(); |
| } catch (IOException e) { |
| Slog.e(TAG, "Cannot create " + WIFI_STATE_FILENAME, e); |
| return; |
| } |
| |
| try (BufferedWriter writer = new BufferedWriter( |
| new OutputStreamWriter(fos, StandardCharsets.UTF_8))) { |
| writer.write(forciblyDisabled ? WIFI_STATE_MODIFIED : WIFI_STATE_ORIGINAL); |
| writer.newLine(); |
| writer.flush(); |
| mWifiStateFile.finishWrite(fos); |
| } catch (IOException e) { |
| mWifiStateFile.failWrite(fos); |
| Slog.e(TAG, "Writing " + WIFI_STATE_FILENAME + " failed", e); |
| } |
| } |
| |
| private boolean readWifiModifiedState() { |
| boolean needToRestore = false; |
| boolean invalidState = false; |
| |
| try (BufferedReader reader = new BufferedReader( |
| new InputStreamReader(mWifiStateFile.openRead(), StandardCharsets.UTF_8))) { |
| String line = reader.readLine(); |
| if (line == null) { |
| needToRestore = false; |
| invalidState = true; |
| } else { |
| line = line.trim(); |
| needToRestore = WIFI_STATE_MODIFIED.equals(line); |
| invalidState = !(needToRestore || WIFI_STATE_ORIGINAL.equals(line)); |
| } |
| } catch (IOException e) { |
| // If a file named wifi_state doesn't exist, we will not modify Wifi at system start. |
| Slog.w(TAG, "Failed to read " + WIFI_STATE_FILENAME + ": " + e); |
| return false; |
| } |
| if (invalidState) { |
| mWifiStateFile.delete(); |
| } |
| |
| return needToRestore; |
| } |
| |
| @GuardedBy("mLock") |
| private void releaseTimerLocked() { |
| if (mTimer != null) { |
| mTimer.cancel(); |
| } |
| mTimer = null; |
| mTimerActive = false; |
| } |
| |
| private void doHandlePreprocessing() { |
| int intervalMs; |
| int pollingCount; |
| synchronized (mLock) { |
| intervalMs = mShutdownPollingIntervalMs; |
| pollingCount = (mShutdownPrepareTimeMs / mShutdownPollingIntervalMs) + 1; |
| } |
| if (Build.IS_USERDEBUG || Build.IS_ENG) { |
| int shutdownPrepareTimeOverrideInSecs = |
| SystemProperties.getInt(PROP_MAX_GARAGE_MODE_DURATION_OVERRIDE, -1); |
| if (shutdownPrepareTimeOverrideInSecs >= 0) { |
| pollingCount = |
| (shutdownPrepareTimeOverrideInSecs * 1000 / intervalMs) |
| + 1; |
| Slog.i(TAG, "Garage mode duration overridden secs:" |
| + shutdownPrepareTimeOverrideInSecs); |
| } |
| } |
| Slog.i(TAG, "processing before shutdown expected for: " |
| + mShutdownPrepareTimeMs + " ms, adding polling:" + pollingCount); |
| synchronized (mLock) { |
| mProcessingStartTime = SystemClock.elapsedRealtime(); |
| releaseTimerLocked(); |
| mTimer = new Timer(); |
| mTimerActive = true; |
| mTimer.scheduleAtFixedRate( |
| new ShutdownProcessingTimerTask(pollingCount), |
| 0 /*delay*/, |
| intervalMs); |
| } |
| if (mSwitchGuestUserBeforeSleep) { |
| switchToNewGuestIfNecessary(); |
| } |
| } |
| |
| private void sendPowerManagerEvent(int newState) { |
| // Broadcast to the listeners that do not signal completion |
| notifyListeners(mPowerManagerListeners, newState); |
| |
| // SHUTDOWN_PREPARE is the only state where we need |
| // to maintain callbacks from listener components. |
| boolean allowCompletion = (newState == CarPowerStateListener.SHUTDOWN_PREPARE); |
| |
| // Fully populate mListenersWeAreWaitingFor before calling any onStateChanged() |
| // for the listeners that signal completion. |
| // Otherwise, if the first listener calls finish() synchronously, we will |
| // see the list go empty and we will think that we are done. |
| boolean haveSomeCompleters = false; |
| PowerManagerCallbackList completingListeners = new PowerManagerCallbackList(); |
| synchronized (mLock) { |
| mListenersWeAreWaitingFor.clear(); |
| int idx = mPowerManagerListenersWithCompletion.beginBroadcast(); |
| while (idx-- > 0) { |
| ICarPowerStateListener listener = |
| mPowerManagerListenersWithCompletion.getBroadcastItem(idx); |
| completingListeners.register(listener); |
| if (allowCompletion) { |
| mListenersWeAreWaitingFor.add(listener.asBinder()); |
| haveSomeCompleters = true; |
| } |
| } |
| mPowerManagerListenersWithCompletion.finishBroadcast(); |
| } |
| // Broadcast to the listeners that DO signal completion |
| notifyListeners(completingListeners, newState); |
| |
| if (allowCompletion && !haveSomeCompleters) { |
| // No jobs need to signal completion. So we are now complete. |
| signalComplete(); |
| } |
| } |
| |
| private void notifyListeners(PowerManagerCallbackList listenerList, int newState) { |
| int idx = listenerList.beginBroadcast(); |
| while (idx-- > 0) { |
| ICarPowerStateListener listener = listenerList.getBroadcastItem(idx); |
| try { |
| listener.onStateChanged(newState); |
| } catch (RemoteException e) { |
| // It's likely the connection snapped. Let binder death handle the situation. |
| Slog.e(TAG, "onStateChanged() call failed", e); |
| } |
| } |
| listenerList.finishBroadcast(); |
| } |
| |
| private void doHandleDeepSleep(boolean simulatedMode) { |
| // keep holding partial wakelock to prevent entering sleep before enterDeepSleep call |
| // enterDeepSleep should force sleep entry even if wake lock is kept. |
| mSystemInterface.switchToPartialWakeLock(); |
| mHandler.cancelProcessingComplete(); |
| synchronized (mLock) { |
| mLastSleepEntryTime = SystemClock.elapsedRealtime(); |
| } |
| int nextListenerState; |
| if (simulatedMode) { |
| simulateSleepByWaiting(); |
| nextListenerState = CarPowerStateListener.SHUTDOWN_CANCELLED; |
| } else { |
| boolean sleepSucceeded = suspendWithRetries(); |
| if (!sleepSucceeded) { |
| // Suspend failed and we shut down instead. |
| // We either won't get here at all or we will power off very soon. |
| return; |
| } |
| // We suspended and have now resumed |
| nextListenerState = CarPowerStateListener.SUSPEND_EXIT; |
| } |
| synchronized (mLock) { |
| mIsResuming = true; |
| // Any wakeup time from before is no longer valid. |
| mNextWakeupSec = 0; |
| } |
| Slog.i(TAG, "Resuming after suspending"); |
| mSystemInterface.refreshDisplayBrightness(); |
| onApPowerStateChange(CpmsState.WAIT_FOR_VHAL, nextListenerState); |
| } |
| |
| private boolean needPowerStateChangeLocked(@NonNull CpmsState newState) { |
| if (mCurrentState == null) { |
| return true; |
| } else if (mCurrentState.equals(newState)) { |
| Slog.d(TAG, "Requested state is already in effect: " + newState.name()); |
| return false; |
| } |
| |
| // The following switch/case enforces the allowed state transitions. |
| boolean transitionAllowed = false; |
| switch (mCurrentState.mState) { |
| case CpmsState.WAIT_FOR_VHAL: |
| transitionAllowed = (newState.mState == CpmsState.ON) |
| || (newState.mState == CpmsState.SHUTDOWN_PREPARE); |
| break; |
| case CpmsState.SUSPEND: |
| transitionAllowed = newState.mState == CpmsState.WAIT_FOR_VHAL; |
| break; |
| case CpmsState.ON: |
| transitionAllowed = (newState.mState == CpmsState.SHUTDOWN_PREPARE) |
| || (newState.mState == CpmsState.SIMULATE_SLEEP); |
| break; |
| case CpmsState.SHUTDOWN_PREPARE: |
| // If VHAL sends SHUTDOWN_IMMEDIATELY or SLEEP_IMMEDIATELY while in |
| // SHUTDOWN_PREPARE state, do it. |
| transitionAllowed = |
| ((newState.mState == CpmsState.SHUTDOWN_PREPARE) && !newState.mCanPostpone) |
| || (newState.mState == CpmsState.WAIT_FOR_FINISH) |
| || (newState.mState == CpmsState.WAIT_FOR_VHAL); |
| break; |
| case CpmsState.SIMULATE_SLEEP: |
| transitionAllowed = true; |
| break; |
| case CpmsState.WAIT_FOR_FINISH: |
| transitionAllowed = (newState.mState == CpmsState.SUSPEND |
| || newState.mState == CpmsState.WAIT_FOR_VHAL); |
| break; |
| default: |
| Slog.e(TAG, "Unexpected current state: currentState=" |
| + mCurrentState.name() + ", newState=" + newState.name()); |
| transitionAllowed = true; |
| } |
| if (!transitionAllowed) { |
| Slog.e(TAG, "Requested power transition is not allowed: " |
| + mCurrentState.name() + " --> " + newState.name()); |
| } |
| return transitionAllowed; |
| } |
| |
| private void doHandleProcessingComplete() { |
| int listenerState; |
| synchronized (mLock) { |
| releaseTimerLocked(); |
| if (!mShutdownOnFinish && mLastSleepEntryTime > mProcessingStartTime) { |
| // entered sleep after processing start. So this could be duplicate request. |
| Slog.w(TAG, "Duplicate sleep entry request, ignore"); |
| return; |
| } |
| listenerState = mShutdownOnFinish |
| ? CarPowerStateListener.SHUTDOWN_ENTER : CarPowerStateListener.SUSPEND_ENTER; |
| } |
| |
| onApPowerStateChange(CpmsState.WAIT_FOR_FINISH, listenerState); |
| } |
| |
| @Override |
| public void onDisplayBrightnessChange(int brightness) { |
| mHandler.handleDisplayBrightnessChange(brightness); |
| } |
| |
| private void doHandleDisplayBrightnessChange(int brightness) { |
| mSystemInterface.setDisplayBrightness(brightness); |
| } |
| |
| private void doHandleMainDisplayStateChange(boolean on) { |
| Slog.w(TAG, "Unimplemented: doHandleMainDisplayStateChange() - on = " + on); |
| } |
| |
| public void handleMainDisplayChanged(boolean on) { |
| mHandler.handleMainDisplayStateChange(on); |
| } |
| |
| /** |
| * Send display brightness to VHAL. |
| * @param brightness value 0-100% |
| */ |
| public void sendDisplayBrightness(int brightness) { |
| mHal.sendDisplayBrightness(brightness); |
| } |
| |
| /** |
| * Get the PowerHandler that we use to change power states |
| */ |
| public Handler getHandler() { |
| return mHandler; |
| |
| } |
| |
| // Binder interface for general use. |
| // The listener is not required (or allowed) to call finished(). |
| @Override |
| public void registerListener(ICarPowerStateListener listener) { |
| ICarImpl.assertPermission(mContext, Car.PERMISSION_CAR_POWER); |
| mPowerManagerListeners.register(listener); |
| } |
| |
| // Binder interface for Car services only. |
| // After the listener completes its processing, it must call finished(). |
| @Override |
| public void registerListenerWithCompletion(ICarPowerStateListener listener) { |
| ICarImpl.assertPermission(mContext, Car.PERMISSION_CAR_POWER); |
| ICarImpl.assertCallingFromSystemProcessOrSelf(); |
| |
| mPowerManagerListenersWithCompletion.register(listener); |
| // TODO: Need to send current state to newly registered listener? If so, need to handle |
| // completion for SHUTDOWN_PREPARE state |
| } |
| |
| @Override |
| public void unregisterListener(ICarPowerStateListener listener) { |
| ICarImpl.assertPermission(mContext, Car.PERMISSION_CAR_POWER); |
| doUnregisterListener(listener); |
| } |
| |
| private void doUnregisterListener(ICarPowerStateListener listener) { |
| mPowerManagerListeners.unregister(listener); |
| boolean found = mPowerManagerListenersWithCompletion.unregister(listener); |
| if (found) { |
| // Remove this from the completion list (if it's there) |
| finishedImpl(listener.asBinder()); |
| } |
| } |
| |
| @Override |
| public void requestShutdownOnNextSuspend() { |
| ICarImpl.assertPermission(mContext, Car.PERMISSION_CAR_POWER); |
| synchronized (mLock) { |
| mShutdownOnNextSuspend = true; |
| } |
| } |
| |
| @Override |
| public void finished(ICarPowerStateListener listener) { |
| ICarImpl.assertPermission(mContext, Car.PERMISSION_CAR_POWER); |
| ICarImpl.assertCallingFromSystemProcessOrSelf(); |
| finishedImpl(listener.asBinder()); |
| } |
| |
| @Override |
| public void scheduleNextWakeupTime(int seconds) { |
| ICarImpl.assertPermission(mContext, Car.PERMISSION_CAR_POWER); |
| if (seconds < 0) { |
| Slog.w(TAG, "Next wake up time is negative. Ignoring!"); |
| return; |
| } |
| boolean timedWakeupAllowed = mHal.isTimedWakeupAllowed(); |
| synchronized (mLock) { |
| if (!timedWakeupAllowed) { |
| Slog.w(TAG, "Setting timed wakeups are disabled in HAL. Skipping"); |
| mNextWakeupSec = 0; |
| return; |
| } |
| if (mNextWakeupSec == 0 || mNextWakeupSec > seconds) { |
| // The new value is sooner than the old value. Take the new value. |
| mNextWakeupSec = seconds; |
| } else { |
| Slog.d(TAG, "Tried to schedule next wake up, but already had shorter " |
| + "scheduled time"); |
| } |
| } |
| } |
| |
| @Override |
| public int getPowerState() { |
| ICarImpl.assertPermission(mContext, Car.PERMISSION_CAR_POWER); |
| synchronized (mLock) { |
| return (mCurrentState == null) ? CarPowerStateListener.INVALID |
| : mCurrentState.mCarPowerStateListenerState; |
| } |
| } |
| |
| private void finishedImpl(IBinder binder) { |
| boolean allAreComplete; |
| synchronized (mLock) { |
| mListenersWeAreWaitingFor.remove(binder); |
| allAreComplete = mListenersWeAreWaitingFor.isEmpty(); |
| } |
| if (allAreComplete) { |
| signalComplete(); |
| } |
| } |
| |
| private void signalComplete() { |
| if (mCurrentState.mState == CpmsState.SHUTDOWN_PREPARE |
| || mCurrentState.mState == CpmsState.SIMULATE_SLEEP) { |
| PowerHandler powerHandler; |
| // All apps are ready to shutdown/suspend. |
| synchronized (mLock) { |
| if (!mShutdownOnFinish) { |
| if (mLastSleepEntryTime > mProcessingStartTime |
| && mLastSleepEntryTime < SystemClock.elapsedRealtime()) { |
| Slog.i(TAG, "signalComplete: Already slept!"); |
| return; |
| } |
| } |
| powerHandler = mHandler; |
| } |
| Slog.i(TAG, "Apps are finished, call handleProcessingComplete()"); |
| powerHandler.handleProcessingComplete(); |
| } |
| } |
| |
| private static final class PowerHandler extends Handler { |
| private static final String TAG = PowerHandler.class.getSimpleName(); |
| |
| private final int MSG_POWER_STATE_CHANGE = 0; |
| private final int MSG_DISPLAY_BRIGHTNESS_CHANGE = 1; |
| private final int MSG_MAIN_DISPLAY_STATE_CHANGE = 2; |
| private final int MSG_PROCESSING_COMPLETE = 3; |
| |
| // Do not handle this immediately but with some delay as there can be a race between |
| // display off due to rear view camera and delivery to here. |
| private final long MAIN_DISPLAY_EVENT_DELAY_MS = 500; |
| |
| private final WeakReference<CarPowerManagementService> mService; |
| |
| private PowerHandler(Looper looper, CarPowerManagementService service) { |
| super(looper); |
| mService = new WeakReference<CarPowerManagementService>(service); |
| } |
| |
| private void handlePowerStateChange() { |
| Message msg = obtainMessage(MSG_POWER_STATE_CHANGE); |
| sendMessage(msg); |
| } |
| |
| private void handleDisplayBrightnessChange(int brightness) { |
| Message msg = obtainMessage(MSG_DISPLAY_BRIGHTNESS_CHANGE, brightness, 0); |
| sendMessage(msg); |
| } |
| |
| private void handleMainDisplayStateChange(boolean on) { |
| removeMessages(MSG_MAIN_DISPLAY_STATE_CHANGE); |
| Message msg = obtainMessage(MSG_MAIN_DISPLAY_STATE_CHANGE, Boolean.valueOf(on)); |
| sendMessageDelayed(msg, MAIN_DISPLAY_EVENT_DELAY_MS); |
| } |
| |
| private void handleProcessingComplete() { |
| removeMessages(MSG_PROCESSING_COMPLETE); |
| Message msg = obtainMessage(MSG_PROCESSING_COMPLETE); |
| sendMessage(msg); |
| } |
| |
| private void cancelProcessingComplete() { |
| removeMessages(MSG_PROCESSING_COMPLETE); |
| } |
| |
| private void cancelAll() { |
| removeMessages(MSG_POWER_STATE_CHANGE); |
| removeMessages(MSG_DISPLAY_BRIGHTNESS_CHANGE); |
| removeMessages(MSG_MAIN_DISPLAY_STATE_CHANGE); |
| removeMessages(MSG_PROCESSING_COMPLETE); |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| CarPowerManagementService service = mService.get(); |
| if (service == null) { |
| Slog.i(TAG, "handleMessage null service"); |
| return; |
| } |
| switch (msg.what) { |
| case MSG_POWER_STATE_CHANGE: |
| service.doHandlePowerStateChange(); |
| break; |
| case MSG_DISPLAY_BRIGHTNESS_CHANGE: |
| service.doHandleDisplayBrightnessChange(msg.arg1); |
| break; |
| case MSG_MAIN_DISPLAY_STATE_CHANGE: |
| service.doHandleMainDisplayStateChange((Boolean) msg.obj); |
| break; |
| case MSG_PROCESSING_COMPLETE: |
| service.doHandleProcessingComplete(); |
| break; |
| } |
| } |
| } |
| |
| private class ShutdownProcessingTimerTask extends TimerTask { |
| private final int mExpirationCount; |
| private int mCurrentCount; |
| |
| private ShutdownProcessingTimerTask(int expirationCount) { |
| mExpirationCount = expirationCount; |
| mCurrentCount = 0; |
| } |
| |
| @Override |
| public void run() { |
| synchronized (mLock) { |
| if (!mTimerActive) { |
| // Ignore timer expiration since we got cancelled |
| return; |
| } |
| mCurrentCount++; |
| if (mCurrentCount > mExpirationCount) { |
| PowerHandler handler; |
| releaseTimerLocked(); |
| handler = mHandler; |
| handler.handleProcessingComplete(); |
| } else { |
| mHal.sendShutdownPostpone(SHUTDOWN_EXTEND_MAX_MS); |
| } |
| } |
| } |
| } |
| |
| // Send the command to enter Suspend to RAM. |
| // If the command is not successful, try again with an exponential back-off. |
| // If it fails repeatedly, send the command to shut down. |
| // If we decide to go to a different power state, abort this retry mechanism. |
| // Returns true if we successfully suspended. |
| private boolean suspendWithRetries() { |
| long retryIntervalMs = INITIAL_SUSPEND_RETRY_INTERVAL_MS; |
| long totalWaitDurationMs = 0; |
| |
| while (true) { |
| Slog.i(TAG, "Entering Suspend to RAM"); |
| boolean suspendSucceeded = mSystemInterface.enterDeepSleep(); |
| if (suspendSucceeded) { |
| return true; |
| } |
| if (totalWaitDurationMs >= mMaxSuspendWaitDurationMs) { |
| break; |
| } |
| // We failed to suspend. Block the thread briefly and try again. |
| synchronized (mLock) { |
| if (mPendingPowerStates.isEmpty()) { |
| Slog.w(TAG, "Failed to Suspend; will retry after " + retryIntervalMs + "ms."); |
| try { |
| mLock.wait(retryIntervalMs); |
| } catch (InterruptedException ignored) { |
| Thread.currentThread().interrupt(); |
| } |
| totalWaitDurationMs += retryIntervalMs; |
| retryIntervalMs = Math.min(retryIntervalMs * 2, MAX_RETRY_INTERVAL_MS); |
| } |
| // Check for a new power state now, before going around the loop again |
| if (!mPendingPowerStates.isEmpty()) { |
| Slog.i(TAG, "Terminating the attempt to Suspend to RAM"); |
| return false; |
| } |
| } |
| } |
| // Too many failures trying to suspend. Shut down. |
| Slog.w(TAG, "Could not Suspend to RAM after " + totalWaitDurationMs |
| + "ms long trial. Shutting down."); |
| mSystemInterface.shutdown(); |
| return false; |
| } |
| |
| private static class CpmsState { |
| // NOTE: When modifying states below, make sure to update CarPowerStateChanged.State in |
| // frameworks/base/cmds/statsd/src/atoms.proto also. |
| public static final int WAIT_FOR_VHAL = 0; |
| public static final int ON = 1; |
| public static final int SHUTDOWN_PREPARE = 2; |
| public static final int WAIT_FOR_FINISH = 3; |
| public static final int SUSPEND = 4; |
| public static final int SIMULATE_SLEEP = 5; |
| |
| /* Config values from AP_POWER_STATE_REQ */ |
| public final boolean mCanPostpone; |
| public final boolean mCanSleep; |
| /* Message sent to CarPowerStateListener in response to this state */ |
| public final int mCarPowerStateListenerState; |
| /* One of the above state variables */ |
| public final int mState; |
| |
| /** |
| * This constructor takes a PowerHalService.PowerState object and creates the corresponding |
| * CPMS state from it. |
| */ |
| CpmsState(PowerState halPowerState) { |
| switch (halPowerState.mState) { |
| case VehicleApPowerStateReq.ON: |
| this.mCanPostpone = false; |
| this.mCanSleep = false; |
| this.mCarPowerStateListenerState = cpmsStateToPowerStateListenerState(ON); |
| this.mState = ON; |
| break; |
| case VehicleApPowerStateReq.SHUTDOWN_PREPARE: |
| this.mCanPostpone = halPowerState.canPostponeShutdown(); |
| this.mCanSleep = halPowerState.canEnterDeepSleep(); |
| this.mCarPowerStateListenerState = cpmsStateToPowerStateListenerState( |
| SHUTDOWN_PREPARE); |
| this.mState = SHUTDOWN_PREPARE; |
| break; |
| case VehicleApPowerStateReq.CANCEL_SHUTDOWN: |
| this.mCanPostpone = false; |
| this.mCanSleep = false; |
| this.mCarPowerStateListenerState = CarPowerStateListener.SHUTDOWN_CANCELLED; |
| this.mState = WAIT_FOR_VHAL; |
| break; |
| case VehicleApPowerStateReq.FINISHED: |
| this.mCanPostpone = false; |
| this.mCanSleep = false; |
| this.mCarPowerStateListenerState = cpmsStateToPowerStateListenerState(SUSPEND); |
| this.mState = SUSPEND; |
| break; |
| default: |
| // Illegal state from PowerState. Throw an exception? |
| this.mCanPostpone = false; |
| this.mCanSleep = false; |
| this.mCarPowerStateListenerState = 0; |
| this.mState = 0; |
| break; |
| } |
| } |
| |
| CpmsState(int state) { |
| this(state, cpmsStateToPowerStateListenerState(state)); |
| } |
| |
| CpmsState(int state, int carPowerStateListenerState) { |
| this.mCanPostpone = (state == SIMULATE_SLEEP); |
| this.mCanSleep = (state == SIMULATE_SLEEP); |
| this.mCarPowerStateListenerState = carPowerStateListenerState; |
| this.mState = state; |
| } |
| |
| public String name() { |
| String baseName; |
| switch(mState) { |
| case WAIT_FOR_VHAL: baseName = "WAIT_FOR_VHAL"; break; |
| case ON: baseName = "ON"; break; |
| case SHUTDOWN_PREPARE: baseName = "SHUTDOWN_PREPARE"; break; |
| case WAIT_FOR_FINISH: baseName = "WAIT_FOR_FINISH"; break; |
| case SUSPEND: baseName = "SUSPEND"; break; |
| case SIMULATE_SLEEP: baseName = "SIMULATE_SLEEP"; break; |
| default: baseName = "<unknown>"; break; |
| } |
| return baseName + "(" + mState + ")"; |
| } |
| |
| private static int cpmsStateToPowerStateListenerState(int state) { |
| int powerStateListenerState = 0; |
| |
| // Set the CarPowerStateListenerState based on current state |
| switch (state) { |
| case ON: |
| powerStateListenerState = CarPowerStateListener.ON; |
| break; |
| case SHUTDOWN_PREPARE: |
| powerStateListenerState = CarPowerStateListener.SHUTDOWN_PREPARE; |
| break; |
| case SUSPEND: |
| powerStateListenerState = CarPowerStateListener.SUSPEND_ENTER; |
| break; |
| case WAIT_FOR_VHAL: |
| case WAIT_FOR_FINISH: |
| default: |
| // Illegal state for this constructor. Throw an exception? |
| break; |
| } |
| return powerStateListenerState; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (!(o instanceof CpmsState)) { |
| return false; |
| } |
| CpmsState that = (CpmsState) o; |
| return this.mState == that.mState |
| && this.mCanSleep == that.mCanSleep |
| && this.mCanPostpone == that.mCanPostpone |
| && this.mCarPowerStateListenerState == that.mCarPowerStateListenerState; |
| } |
| |
| @Override |
| public String toString() { |
| return "CpmsState canSleep:" + mCanSleep + ", canPostpone=" + mCanPostpone |
| + ", carPowerStateListenerState=" + mCarPowerStateListenerState |
| + ", CpmsState=" + this.name(); |
| } |
| } |
| |
| /** |
| * Resume after a manually-invoked suspend. |
| * Invoked using "adb shell dumpsys activity service com.android.car resume". |
| */ |
| public void forceSimulatedResume() { |
| PowerHandler handler; |
| synchronized (mLock) { |
| // Cancel Garage Mode in case it's running |
| mPendingPowerStates.addFirst(new CpmsState(CpmsState.WAIT_FOR_VHAL, |
| CarPowerStateListener.SHUTDOWN_CANCELLED)); |
| mLock.notify(); |
| handler = mHandler; |
| } |
| handler.handlePowerStateChange(); |
| |
| synchronized (mSimulationWaitObject) { |
| mWakeFromSimulatedSleep = true; |
| mSimulationWaitObject.notify(); |
| } |
| } |
| |
| /** |
| * Manually enter simulated suspend (Deep Sleep) mode, trigging Garage mode. |
| * If the parameter is 'true', reboot the system when Garage Mode completes. |
| * |
| * Invoked using "adb shell dumpsys activity service com.android.car suspend" or |
| * "adb shell dumpsys activity service com.android.car garage-mode reboot". |
| * This is similar to 'onApPowerStateChange()' except that it needs to create a CpmsState |
| * that is not directly derived from a VehicleApPowerStateReq. |
| */ |
| @VisibleForTesting |
| void forceSuspendAndMaybeReboot(boolean shouldReboot) { |
| synchronized (mSimulationWaitObject) { |
| mInSimulatedDeepSleepMode = true; |
| mWakeFromSimulatedSleep = false; |
| mGarageModeShouldExitImmediately = false; |
| } |
| PowerHandler handler; |
| synchronized (mLock) { |
| mRebootAfterGarageMode = shouldReboot; |
| mPendingPowerStates.addFirst(new CpmsState(CpmsState.SIMULATE_SLEEP, |
| CarPowerStateListener.SHUTDOWN_PREPARE)); |
| handler = mHandler; |
| } |
| handler.handlePowerStateChange(); |
| } |
| |
| // In a real Deep Sleep, the hardware removes power from the CPU (but retains power |
| // on the RAM). This puts the processor to sleep. Upon some external signal, power |
| // is re-applied to the CPU, and processing resumes right where it left off. |
| // We simulate this behavior by calling wait(). |
| // We continue from wait() when forceSimulatedResume() is called. |
| private void simulateSleepByWaiting() { |
| Slog.i(TAG, "Starting to simulate Deep Sleep by waiting"); |
| synchronized (mSimulationWaitObject) { |
| while (!mWakeFromSimulatedSleep) { |
| try { |
| mSimulationWaitObject.wait(); |
| } catch (InterruptedException ignored) { |
| Thread.currentThread().interrupt(); // Restore interrupted status |
| } |
| } |
| mInSimulatedDeepSleepMode = false; |
| } |
| Slog.i(TAG, "Exit Deep Sleep simulation"); |
| } |
| |
| private int getMaxSuspendWaitDurationConfig() { |
| return mContext.getResources().getInteger(R.integer.config_maxSuspendWaitDuration); |
| } |
| } |
