| /* |
| * Copyright (C) 2014 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.wm; |
| |
| import static android.app.ActivityManager.FLAG_AND_UNLOCKED; |
| import static android.app.ActivityManager.RECENT_IGNORE_UNAVAILABLE; |
| import static android.app.ActivityManager.RECENT_WITH_EXCLUDED; |
| import static android.app.ActivityTaskManager.INVALID_TASK_ID; |
| import static android.app.WindowConfiguration.ACTIVITY_TYPE_ASSISTANT; |
| import static android.app.WindowConfiguration.ACTIVITY_TYPE_DREAM; |
| import static android.app.WindowConfiguration.ACTIVITY_TYPE_HOME; |
| import static android.app.WindowConfiguration.ACTIVITY_TYPE_RECENTS; |
| import static android.app.WindowConfiguration.ACTIVITY_TYPE_UNDEFINED; |
| import static android.app.WindowConfiguration.WINDOWING_MODE_MULTI_WINDOW; |
| import static android.app.WindowConfiguration.WINDOWING_MODE_PINNED; |
| import static android.app.WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_PRIMARY; |
| import static android.app.WindowConfiguration.WINDOWING_MODE_UNDEFINED; |
| import static android.content.Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS; |
| import static android.content.Intent.FLAG_ACTIVITY_MULTIPLE_TASK; |
| import static android.content.Intent.FLAG_ACTIVITY_NEW_DOCUMENT; |
| import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK; |
| import static android.os.Process.SYSTEM_UID; |
| |
| import static com.android.server.wm.ActivityStackSupervisor.REMOVE_FROM_RECENTS; |
| import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_RECENTS; |
| import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_RECENTS_TRIM_TASKS; |
| import static com.android.server.wm.ActivityTaskManagerDebugConfig.DEBUG_TASKS; |
| import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_RECENTS; |
| import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_TASKS; |
| import static com.android.server.wm.ActivityTaskManagerDebugConfig.TAG_ATM; |
| import static com.android.server.wm.ActivityTaskManagerDebugConfig.TAG_WITH_CLASS_NAME; |
| |
| import android.annotation.Nullable; |
| import android.app.ActivityManager; |
| import android.app.ActivityTaskManager; |
| import android.app.AppGlobals; |
| import android.content.ComponentName; |
| import android.content.Intent; |
| import android.content.pm.ActivityInfo; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.IPackageManager; |
| import android.content.pm.PackageManager; |
| import android.content.pm.ParceledListSlice; |
| import android.content.pm.UserInfo; |
| import android.content.res.Resources; |
| import android.graphics.Bitmap; |
| import android.os.Environment; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.os.SystemProperties; |
| import android.os.UserHandle; |
| import android.text.TextUtils; |
| import android.util.ArraySet; |
| import android.util.Slog; |
| import android.util.SparseArray; |
| import android.util.SparseBooleanArray; |
| import android.view.MotionEvent; |
| import android.view.WindowManagerPolicyConstants.PointerEventListener; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.internal.util.function.pooled.PooledLambda; |
| import com.android.server.am.ActivityManagerService; |
| |
| import com.google.android.collect.Sets; |
| |
| import java.io.File; |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.Comparator; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * Class for managing the recent tasks list. The list is ordered by most recent (index 0) to the |
| * least recent. |
| * |
| * The trimming logic can be boiled down to the following. For recent task list with a number of |
| * tasks, the visible tasks are an interleaving subset of tasks that would normally be presented to |
| * the user. Non-visible tasks are not considered for trimming. Of the visible tasks, only a |
| * sub-range are presented to the user, based on the device type, last task active time, or other |
| * task state. Tasks that are not in the visible range and are not returnable from the SystemUI |
| * (considering the back stack) are considered trimmable. If the device does not support recent |
| * tasks, then trimming is completely disabled. |
| * |
| * eg. |
| * L = [TTTTTTTTTTTTTTTTTTTTTTTTTT] // list of tasks |
| * [VVV VV VVVV V V V ] // Visible tasks |
| * [RRR RR XXXX X X X ] // Visible range tasks, eg. if the device only shows 5 tasks, |
| * // 'X' tasks are trimmed. |
| */ |
| class RecentTasks { |
| private static final String TAG = TAG_WITH_CLASS_NAME ? "RecentTasks" : TAG_ATM; |
| private static final String TAG_RECENTS = TAG + POSTFIX_RECENTS; |
| private static final String TAG_TASKS = TAG + POSTFIX_TASKS; |
| |
| private static final int DEFAULT_INITIAL_CAPACITY = 5; |
| |
| // The duration of time after freezing the recent tasks list where getRecentTasks() will return |
| // a stable ordering of the tasks. Upon the next call to getRecentTasks() beyond this duration, |
| // the task list will be unfrozen and committed (the current top task will be moved to the |
| // front of the list) |
| private static final long FREEZE_TASK_LIST_TIMEOUT_MS = TimeUnit.SECONDS.toMillis(5); |
| |
| // Comparator to sort by taskId |
| private static final Comparator<Task> TASK_ID_COMPARATOR = |
| (lhs, rhs) -> rhs.mTaskId - lhs.mTaskId; |
| |
| // Placeholder variables to keep track of activities/apps that are no longer avialble while |
| // iterating through the recents list |
| private static final ActivityInfo NO_ACTIVITY_INFO_TOKEN = new ActivityInfo(); |
| private static final ApplicationInfo NO_APPLICATION_INFO_TOKEN = new ApplicationInfo(); |
| private TaskChangeNotificationController mTaskNotificationController; |
| |
| /** |
| * Callbacks made when manipulating the list. |
| */ |
| interface Callbacks { |
| /** |
| * Called when a task is added to the recent tasks list. |
| */ |
| void onRecentTaskAdded(Task task); |
| |
| /** |
| * Called when a task is removed from the recent tasks list. |
| */ |
| void onRecentTaskRemoved(Task task, boolean wasTrimmed, boolean killProcess); |
| } |
| |
| /** |
| * Save recent tasks information across reboots. |
| */ |
| private final TaskPersister mTaskPersister; |
| private final ActivityTaskManagerService mService; |
| private final ActivityStackSupervisor mSupervisor; |
| |
| /** |
| * Keeps track of the static recents package/component which is granted additional permissions |
| * to call recents-related APIs. |
| */ |
| private int mRecentsUid = -1; |
| private ComponentName mRecentsComponent = null; |
| private @Nullable String mFeatureId; |
| |
| /** |
| * Mapping of user id -> whether recent tasks have been loaded for that user. |
| */ |
| private final SparseBooleanArray mUsersWithRecentsLoaded = new SparseBooleanArray( |
| DEFAULT_INITIAL_CAPACITY); |
| |
| /** |
| * Stores for each user task ids that are taken by tasks residing in persistent storage. These |
| * tasks may or may not currently be in memory. |
| */ |
| private final SparseArray<SparseBooleanArray> mPersistedTaskIds = new SparseArray<>( |
| DEFAULT_INITIAL_CAPACITY); |
| |
| // List of all active recent tasks |
| private final ArrayList<Task> mTasks = new ArrayList<>(); |
| private final ArrayList<Callbacks> mCallbacks = new ArrayList<>(); |
| |
| /** The non-empty tasks that are removed from recent tasks (see {@link #removeForAddTask}). */ |
| private final ArrayList<Task> mHiddenTasks = new ArrayList<>(); |
| |
| // These values are generally loaded from resources, but can be set dynamically in the tests |
| private boolean mHasVisibleRecentTasks; |
| private int mGlobalMaxNumTasks; |
| private int mMinNumVisibleTasks; |
| private int mMaxNumVisibleTasks; |
| private long mActiveTasksSessionDurationMs; |
| |
| // When set, the task list will not be reordered as tasks within the list are moved to the |
| // front. Newly created tasks, or tasks that are removed from the list will continue to change |
| // the list. This does not affect affiliated tasks. |
| private boolean mFreezeTaskListReordering; |
| private long mFreezeTaskListTimeoutMs = FREEZE_TASK_LIST_TIMEOUT_MS; |
| |
| // Mainly to avoid object recreation on multiple calls. |
| private final ArrayList<Task> mTmpRecents = new ArrayList<>(); |
| private final HashMap<ComponentName, ActivityInfo> mTmpAvailActCache = new HashMap<>(); |
| private final HashMap<String, ApplicationInfo> mTmpAvailAppCache = new HashMap<>(); |
| private final SparseBooleanArray mTmpQuietProfileUserIds = new SparseBooleanArray(); |
| |
| // TODO(b/127498985): This is currently a rough heuristic for interaction inside an app |
| private final PointerEventListener mListener = new PointerEventListener() { |
| @Override |
| public void onPointerEvent(MotionEvent ev) { |
| if (!mFreezeTaskListReordering || ev.getAction() != MotionEvent.ACTION_DOWN) { |
| // Skip if we aren't freezing or starting a gesture |
| return; |
| } |
| int displayId = ev.getDisplayId(); |
| int x = (int) ev.getX(); |
| int y = (int) ev.getY(); |
| mService.mH.post(PooledLambda.obtainRunnable((nonArg) -> { |
| synchronized (mService.mGlobalLock) { |
| // Unfreeze the task list once we touch down in a task |
| final RootWindowContainer rac = mService.mRootWindowContainer; |
| final DisplayContent dc = rac.getDisplayContent(displayId).mDisplayContent; |
| if (dc.pointWithinAppWindow(x, y)) { |
| final ActivityStack stack = mService.getTopDisplayFocusedStack(); |
| final Task topTask = stack != null ? stack.getTopMostTask() : null; |
| resetFreezeTaskListReordering(topTask); |
| } |
| } |
| }, null).recycleOnUse()); |
| } |
| }; |
| |
| private final Runnable mResetFreezeTaskListOnTimeoutRunnable = |
| this::resetFreezeTaskListReorderingOnTimeout; |
| |
| @VisibleForTesting |
| RecentTasks(ActivityTaskManagerService service, TaskPersister taskPersister) { |
| mService = service; |
| mSupervisor = mService.mStackSupervisor; |
| mTaskPersister = taskPersister; |
| mGlobalMaxNumTasks = ActivityTaskManager.getMaxRecentTasksStatic(); |
| mHasVisibleRecentTasks = true; |
| mTaskNotificationController = service.getTaskChangeNotificationController(); |
| } |
| |
| RecentTasks(ActivityTaskManagerService service, ActivityStackSupervisor stackSupervisor) { |
| final File systemDir = Environment.getDataSystemDirectory(); |
| final Resources res = service.mContext.getResources(); |
| mService = service; |
| mSupervisor = mService.mStackSupervisor; |
| mTaskPersister = new TaskPersister(systemDir, stackSupervisor, service, this, |
| stackSupervisor.mPersisterQueue); |
| mGlobalMaxNumTasks = ActivityTaskManager.getMaxRecentTasksStatic(); |
| mTaskNotificationController = service.getTaskChangeNotificationController(); |
| mHasVisibleRecentTasks = res.getBoolean(com.android.internal.R.bool.config_hasRecents); |
| loadParametersFromResources(res); |
| } |
| |
| @VisibleForTesting |
| void setParameters(int minNumVisibleTasks, int maxNumVisibleTasks, |
| long activeSessionDurationMs) { |
| mMinNumVisibleTasks = minNumVisibleTasks; |
| mMaxNumVisibleTasks = maxNumVisibleTasks; |
| mActiveTasksSessionDurationMs = activeSessionDurationMs; |
| } |
| |
| @VisibleForTesting |
| void setGlobalMaxNumTasks(int globalMaxNumTasks) { |
| mGlobalMaxNumTasks = globalMaxNumTasks; |
| } |
| |
| @VisibleForTesting |
| void setFreezeTaskListTimeout(long timeoutMs) { |
| mFreezeTaskListTimeoutMs = timeoutMs; |
| } |
| |
| PointerEventListener getInputListener() { |
| return mListener; |
| } |
| |
| /** |
| * Freezes the current recent task list order until either a user interaction with the current |
| * app, or a timeout occurs. |
| */ |
| void setFreezeTaskListReordering() { |
| // Only fire the callback once per quickswitch session, not on every individual switch |
| if (!mFreezeTaskListReordering) { |
| mTaskNotificationController.notifyTaskListFrozen(true); |
| mFreezeTaskListReordering = true; |
| } |
| |
| // Always update the reordering time when this is called to ensure that the timeout |
| // is reset |
| mService.mH.removeCallbacks(mResetFreezeTaskListOnTimeoutRunnable); |
| mService.mH.postDelayed(mResetFreezeTaskListOnTimeoutRunnable, mFreezeTaskListTimeoutMs); |
| } |
| |
| /** |
| * Commits the frozen recent task list order, moving the provided {@param topTask} to the |
| * front of the list. |
| */ |
| void resetFreezeTaskListReordering(Task topTask) { |
| if (!mFreezeTaskListReordering) { |
| return; |
| } |
| |
| // Once we end freezing the task list, reset the existing task order to the stable state |
| mFreezeTaskListReordering = false; |
| mService.mH.removeCallbacks(mResetFreezeTaskListOnTimeoutRunnable); |
| |
| // If the top task is provided, then restore the top task to the front of the list |
| if (topTask != null) { |
| mTasks.remove(topTask); |
| mTasks.add(0, topTask); |
| } |
| |
| // Resume trimming tasks |
| trimInactiveRecentTasks(); |
| |
| mTaskNotificationController.notifyTaskStackChanged(); |
| mTaskNotificationController.notifyTaskListFrozen(false); |
| } |
| |
| /** |
| * Resets the frozen recent task list order if the timeout has passed. This should be called |
| * before we need to iterate the task list in order (either for purposes of returning the list |
| * to SystemUI or if we need to trim tasks in order) |
| */ |
| @VisibleForTesting |
| void resetFreezeTaskListReorderingOnTimeout() { |
| synchronized (mService.mGlobalLock) { |
| final ActivityStack focusedStack = mService.getTopDisplayFocusedStack(); |
| final Task topTask = focusedStack != null ? focusedStack.getTopMostTask() : null; |
| resetFreezeTaskListReordering(topTask); |
| } |
| } |
| |
| @VisibleForTesting |
| boolean isFreezeTaskListReorderingSet() { |
| return mFreezeTaskListReordering; |
| } |
| |
| /** |
| * Loads the parameters from the system resources. |
| */ |
| @VisibleForTesting |
| void loadParametersFromResources(Resources res) { |
| if (ActivityManager.isLowRamDeviceStatic()) { |
| mMinNumVisibleTasks = res.getInteger( |
| com.android.internal.R.integer.config_minNumVisibleRecentTasks_lowRam); |
| mMaxNumVisibleTasks = res.getInteger( |
| com.android.internal.R.integer.config_maxNumVisibleRecentTasks_lowRam); |
| } else if (SystemProperties.getBoolean("ro.recents.grid", false)) { |
| mMinNumVisibleTasks = res.getInteger( |
| com.android.internal.R.integer.config_minNumVisibleRecentTasks_grid); |
| mMaxNumVisibleTasks = res.getInteger( |
| com.android.internal.R.integer.config_maxNumVisibleRecentTasks_grid); |
| } else { |
| mMinNumVisibleTasks = res.getInteger( |
| com.android.internal.R.integer.config_minNumVisibleRecentTasks); |
| mMaxNumVisibleTasks = res.getInteger( |
| com.android.internal.R.integer.config_maxNumVisibleRecentTasks); |
| } |
| final int sessionDurationHrs = res.getInteger( |
| com.android.internal.R.integer.config_activeTaskDurationHours); |
| mActiveTasksSessionDurationMs = (sessionDurationHrs > 0) |
| ? TimeUnit.HOURS.toMillis(sessionDurationHrs) |
| : -1; |
| } |
| |
| /** |
| * Loads the static recents component. This is called after the system is ready, but before |
| * any dependent services (like SystemUI) is started. |
| */ |
| void loadRecentsComponent(Resources res) { |
| final String rawRecentsComponent = res.getString( |
| com.android.internal.R.string.config_recentsComponentName); |
| if (TextUtils.isEmpty(rawRecentsComponent)) { |
| return; |
| } |
| |
| final ComponentName cn = ComponentName.unflattenFromString(rawRecentsComponent); |
| if (cn != null) { |
| try { |
| final ApplicationInfo appInfo = AppGlobals.getPackageManager() |
| .getApplicationInfo(cn.getPackageName(), 0, mService.mContext.getUserId()); |
| if (appInfo != null) { |
| mRecentsUid = appInfo.uid; |
| mRecentsComponent = cn; |
| } |
| } catch (RemoteException e) { |
| Slog.w(TAG, "Could not load application info for recents component: " + cn); |
| } |
| } |
| } |
| |
| /** |
| * @return whether the current caller has the same uid as the recents component. |
| */ |
| boolean isCallerRecents(int callingUid) { |
| return UserHandle.isSameApp(callingUid, mRecentsUid); |
| } |
| |
| /** |
| * @return whether the given component is the recents component and shares the same uid as the |
| * recents component. |
| */ |
| boolean isRecentsComponent(ComponentName cn, int uid) { |
| return cn.equals(mRecentsComponent) && UserHandle.isSameApp(uid, mRecentsUid); |
| } |
| |
| /** |
| * @return whether the home app is also the active handler of recent tasks. |
| */ |
| boolean isRecentsComponentHomeActivity(int userId) { |
| final ComponentName defaultHomeActivity = mService.getPackageManagerInternalLocked() |
| .getDefaultHomeActivity(userId); |
| return defaultHomeActivity != null && mRecentsComponent != null && |
| defaultHomeActivity.getPackageName().equals(mRecentsComponent.getPackageName()); |
| } |
| |
| /** |
| * @return the recents component. |
| */ |
| ComponentName getRecentsComponent() { |
| return mRecentsComponent; |
| } |
| |
| /** |
| * @return the featureId for the recents component. |
| */ |
| @Nullable String getRecentsComponentFeatureId() { |
| return mFeatureId; |
| } |
| |
| /** |
| * @return the uid for the recents component. |
| */ |
| int getRecentsComponentUid() { |
| return mRecentsUid; |
| } |
| |
| void registerCallback(Callbacks callback) { |
| mCallbacks.add(callback); |
| } |
| |
| void unregisterCallback(Callbacks callback) { |
| mCallbacks.remove(callback); |
| } |
| |
| private void notifyTaskAdded(Task task) { |
| for (int i = 0; i < mCallbacks.size(); i++) { |
| mCallbacks.get(i).onRecentTaskAdded(task); |
| } |
| mTaskNotificationController.notifyTaskListUpdated(); |
| } |
| |
| private void notifyTaskRemoved(Task task, boolean wasTrimmed, boolean killProcess) { |
| for (int i = 0; i < mCallbacks.size(); i++) { |
| mCallbacks.get(i).onRecentTaskRemoved(task, wasTrimmed, killProcess); |
| } |
| mTaskNotificationController.notifyTaskListUpdated(); |
| } |
| |
| /** |
| * Loads the persistent recentTasks for {@code userId} into this list from persistent storage. |
| * Does nothing if they are already loaded. |
| * |
| * @param userId the user Id |
| */ |
| void loadUserRecentsLocked(int userId) { |
| if (mUsersWithRecentsLoaded.get(userId)) { |
| // User already loaded, return early |
| return; |
| } |
| |
| // Load the task ids if not loaded. |
| loadPersistedTaskIdsForUserLocked(userId); |
| |
| // Check if any tasks are added before recents is loaded |
| final SparseBooleanArray preaddedTasks = new SparseBooleanArray(); |
| for (final Task task : mTasks) { |
| if (task.mUserId == userId && shouldPersistTaskLocked(task)) { |
| preaddedTasks.put(task.mTaskId, true); |
| } |
| } |
| |
| Slog.i(TAG, "Loading recents for user " + userId + " into memory."); |
| List<Task> tasks = mTaskPersister.restoreTasksForUserLocked(userId, preaddedTasks); |
| mTasks.addAll(tasks); |
| cleanupLocked(userId); |
| mUsersWithRecentsLoaded.put(userId, true); |
| |
| // If we have tasks added before loading recents, we need to update persistent task IDs. |
| if (preaddedTasks.size() > 0) { |
| syncPersistentTaskIdsLocked(); |
| } |
| } |
| |
| private void loadPersistedTaskIdsForUserLocked(int userId) { |
| // An empty instead of a null set here means that no persistent taskIds were present |
| // on file when we loaded them. |
| if (mPersistedTaskIds.get(userId) == null) { |
| mPersistedTaskIds.put(userId, mTaskPersister.loadPersistedTaskIdsForUser(userId)); |
| Slog.i(TAG, "Loaded persisted task ids for user " + userId); |
| } |
| } |
| |
| /** |
| * @return whether the {@param taskId} is currently in use for the given user. |
| */ |
| boolean containsTaskId(int taskId, int userId) { |
| loadPersistedTaskIdsForUserLocked(userId); |
| return mPersistedTaskIds.get(userId).get(taskId); |
| } |
| |
| /** |
| * @return all the task ids for the user with the given {@param userId}. |
| */ |
| SparseBooleanArray getTaskIdsForUser(int userId) { |
| loadPersistedTaskIdsForUserLocked(userId); |
| return mPersistedTaskIds.get(userId); |
| } |
| |
| /** |
| * Kicks off the task persister to write any pending tasks to disk. |
| */ |
| void notifyTaskPersisterLocked(Task task, boolean flush) { |
| final ActivityStack stack = task != null ? task.getStack() : null; |
| if (stack != null && stack.isHomeOrRecentsStack()) { |
| // Never persist the home or recents stack. |
| return; |
| } |
| syncPersistentTaskIdsLocked(); |
| mTaskPersister.wakeup(task, flush); |
| } |
| |
| private void syncPersistentTaskIdsLocked() { |
| for (int i = mPersistedTaskIds.size() - 1; i >= 0; i--) { |
| int userId = mPersistedTaskIds.keyAt(i); |
| if (mUsersWithRecentsLoaded.get(userId)) { |
| // Recents are loaded only after task ids are loaded. Therefore, the set of taskids |
| // referenced here should not be null. |
| mPersistedTaskIds.valueAt(i).clear(); |
| } |
| } |
| for (int i = mTasks.size() - 1; i >= 0; i--) { |
| final Task task = mTasks.get(i); |
| if (shouldPersistTaskLocked(task)) { |
| // Set of persisted taskIds for task.userId should not be null here |
| // TODO Investigate why it can happen. For now initialize with an empty set |
| if (mPersistedTaskIds.get(task.mUserId) == null) { |
| Slog.wtf(TAG, "No task ids found for userId " + task.mUserId + ". task=" + task |
| + " mPersistedTaskIds=" + mPersistedTaskIds); |
| mPersistedTaskIds.put(task.mUserId, new SparseBooleanArray()); |
| } |
| mPersistedTaskIds.get(task.mUserId).put(task.mTaskId, true); |
| } |
| } |
| } |
| |
| private static boolean shouldPersistTaskLocked(Task task) { |
| final ActivityStack stack = task.getStack(); |
| return task.isPersistable && (stack == null || !stack.isHomeOrRecentsStack()); |
| } |
| |
| void onSystemReadyLocked() { |
| loadRecentsComponent(mService.mContext.getResources()); |
| mTasks.clear(); |
| } |
| |
| Bitmap getTaskDescriptionIcon(String path) { |
| return mTaskPersister.getTaskDescriptionIcon(path); |
| } |
| |
| void saveImage(Bitmap image, String path) { |
| mTaskPersister.saveImage(image, path); |
| } |
| |
| void flush() { |
| synchronized (mService.mGlobalLock) { |
| syncPersistentTaskIdsLocked(); |
| } |
| mTaskPersister.flush(); |
| } |
| |
| /** |
| * Returns all userIds for which recents from persistent storage are loaded into this list. |
| * |
| * @return an array of userIds. |
| */ |
| int[] usersWithRecentsLoadedLocked() { |
| int[] usersWithRecentsLoaded = new int[mUsersWithRecentsLoaded.size()]; |
| int len = 0; |
| for (int i = 0; i < usersWithRecentsLoaded.length; i++) { |
| int userId = mUsersWithRecentsLoaded.keyAt(i); |
| if (mUsersWithRecentsLoaded.valueAt(i)) { |
| usersWithRecentsLoaded[len++] = userId; |
| } |
| } |
| if (len < usersWithRecentsLoaded.length) { |
| // should never happen. |
| return Arrays.copyOf(usersWithRecentsLoaded, len); |
| } |
| return usersWithRecentsLoaded; |
| } |
| |
| /** |
| * Removes recent tasks and any other state kept in memory for the passed in user. Does not |
| * touch the information present on persistent storage. |
| * |
| * @param userId the id of the user |
| */ |
| void unloadUserDataFromMemoryLocked(int userId) { |
| if (mUsersWithRecentsLoaded.get(userId)) { |
| Slog.i(TAG, "Unloading recents for user " + userId + " from memory."); |
| mUsersWithRecentsLoaded.delete(userId); |
| removeTasksForUserLocked(userId); |
| } |
| mPersistedTaskIds.delete(userId); |
| mTaskPersister.unloadUserDataFromMemory(userId); |
| } |
| |
| /** Remove recent tasks for a user. */ |
| private void removeTasksForUserLocked(int userId) { |
| if(userId <= 0) { |
| Slog.i(TAG, "Can't remove recent task on user " + userId); |
| return; |
| } |
| |
| for (int i = mTasks.size() - 1; i >= 0; --i) { |
| Task task = mTasks.get(i); |
| if (task.mUserId == userId) { |
| if(DEBUG_TASKS) Slog.i(TAG_TASKS, |
| "remove RecentTask " + task + " when finishing user" + userId); |
| remove(task); |
| } |
| } |
| } |
| |
| void onPackagesSuspendedChanged(String[] packages, boolean suspended, int userId) { |
| final Set<String> packageNames = Sets.newHashSet(packages); |
| for (int i = mTasks.size() - 1; i >= 0; --i) { |
| final Task task = mTasks.get(i); |
| if (task.realActivity != null |
| && packageNames.contains(task.realActivity.getPackageName()) |
| && task.mUserId == userId |
| && task.realActivitySuspended != suspended) { |
| task.realActivitySuspended = suspended; |
| if (suspended) { |
| mSupervisor.removeTask(task, false, REMOVE_FROM_RECENTS, "suspended-package"); |
| } |
| notifyTaskPersisterLocked(task, false); |
| } |
| } |
| } |
| |
| void onLockTaskModeStateChanged(int lockTaskModeState, int userId) { |
| if (lockTaskModeState != ActivityManager.LOCK_TASK_MODE_LOCKED) { |
| return; |
| } |
| for (int i = mTasks.size() - 1; i >= 0; --i) { |
| final Task task = mTasks.get(i); |
| if (task.mUserId == userId |
| && !mService.getLockTaskController().isTaskAllowlisted(task)) { |
| remove(task); |
| } |
| } |
| } |
| |
| void removeTasksByPackageName(String packageName, int userId) { |
| for (int i = mTasks.size() - 1; i >= 0; --i) { |
| final Task task = mTasks.get(i); |
| final String taskPackageName = |
| task.getBaseIntent().getComponent().getPackageName(); |
| if (task.mUserId != userId) continue; |
| if (!taskPackageName.equals(packageName)) continue; |
| |
| mSupervisor.removeTask(task, true, REMOVE_FROM_RECENTS, "remove-package-task"); |
| } |
| } |
| |
| void removeAllVisibleTasks(int userId) { |
| Set<Integer> profileIds = getProfileIds(userId); |
| for (int i = mTasks.size() - 1; i >= 0; --i) { |
| final Task task = mTasks.get(i); |
| if (!profileIds.contains(task.mUserId)) continue; |
| if (isVisibleRecentTask(task)) { |
| mTasks.remove(i); |
| notifyTaskRemoved(task, true /* wasTrimmed */, true /* killProcess */); |
| } |
| } |
| } |
| |
| void cleanupDisabledPackageTasksLocked(String packageName, Set<String> filterByClasses, |
| int userId) { |
| for (int i = mTasks.size() - 1; i >= 0; --i) { |
| final Task task = mTasks.get(i); |
| if (userId != UserHandle.USER_ALL && task.mUserId != userId) { |
| continue; |
| } |
| |
| ComponentName cn = task.intent != null ? task.intent.getComponent() : null; |
| final boolean sameComponent = cn != null && cn.getPackageName().equals(packageName) |
| && (filterByClasses == null || filterByClasses.contains(cn.getClassName())); |
| if (sameComponent) { |
| mSupervisor.removeTask(task, false, REMOVE_FROM_RECENTS, "disabled-package"); |
| } |
| } |
| } |
| |
| /** |
| * Update the recent tasks lists: make sure tasks should still be here (their |
| * applications / activities still exist), update their availability, fix-up ordering |
| * of affiliations. |
| */ |
| void cleanupLocked(int userId) { |
| int recentsCount = mTasks.size(); |
| if (recentsCount == 0) { |
| // Happens when called from the packagemanager broadcast before boot, |
| // or just any empty list. |
| return; |
| } |
| |
| // Clear the temp lists |
| mTmpAvailActCache.clear(); |
| mTmpAvailAppCache.clear(); |
| |
| final IPackageManager pm = AppGlobals.getPackageManager(); |
| for (int i = recentsCount - 1; i >= 0; i--) { |
| final Task task = mTasks.get(i); |
| if (userId != UserHandle.USER_ALL && task.mUserId != userId) { |
| // Only look at tasks for the user ID of interest. |
| continue; |
| } |
| if (task.autoRemoveRecents && task.getTopNonFinishingActivity() == null) { |
| // This situation is broken, and we should just get rid of it now. |
| remove(task); |
| Slog.w(TAG, "Removing auto-remove without activity: " + task); |
| continue; |
| } |
| // Check whether this activity is currently available. |
| if (task.realActivity != null) { |
| ActivityInfo ai = mTmpAvailActCache.get(task.realActivity); |
| if (ai == null) { |
| try { |
| // At this first cut, we're only interested in |
| // activities that are fully runnable based on |
| // current system state. |
| ai = pm.getActivityInfo(task.realActivity, |
| PackageManager.MATCH_DEBUG_TRIAGED_MISSING |
| | ActivityManagerService.STOCK_PM_FLAGS, userId); |
| } catch (RemoteException e) { |
| // Will never happen. |
| continue; |
| } |
| if (ai == null) { |
| ai = NO_ACTIVITY_INFO_TOKEN; |
| } |
| mTmpAvailActCache.put(task.realActivity, ai); |
| } |
| if (ai == NO_ACTIVITY_INFO_TOKEN) { |
| // This could be either because the activity no longer exists, or the |
| // app is temporarily gone. For the former we want to remove the recents |
| // entry; for the latter we want to mark it as unavailable. |
| ApplicationInfo app = mTmpAvailAppCache |
| .get(task.realActivity.getPackageName()); |
| if (app == null) { |
| try { |
| app = pm.getApplicationInfo(task.realActivity.getPackageName(), |
| PackageManager.MATCH_UNINSTALLED_PACKAGES, userId); |
| } catch (RemoteException e) { |
| // Will never happen. |
| continue; |
| } |
| if (app == null) { |
| app = NO_APPLICATION_INFO_TOKEN; |
| } |
| mTmpAvailAppCache.put(task.realActivity.getPackageName(), app); |
| } |
| if (app == NO_APPLICATION_INFO_TOKEN |
| || (app.flags & ApplicationInfo.FLAG_INSTALLED) == 0) { |
| // Doesn't exist any more! Good-bye. |
| remove(task); |
| Slog.w(TAG, "Removing no longer valid recent: " + task); |
| continue; |
| } else { |
| // Otherwise just not available for now. |
| if (DEBUG_RECENTS && task.isAvailable) Slog.d(TAG_RECENTS, |
| "Making recent unavailable: " + task); |
| task.isAvailable = false; |
| } |
| } else { |
| if (!ai.enabled || !ai.applicationInfo.enabled |
| || (ai.applicationInfo.flags |
| & ApplicationInfo.FLAG_INSTALLED) == 0) { |
| if (DEBUG_RECENTS && task.isAvailable) Slog.d(TAG_RECENTS, |
| "Making recent unavailable: " + task |
| + " (enabled=" + ai.enabled + "/" |
| + ai.applicationInfo.enabled |
| + " flags=" |
| + Integer.toHexString(ai.applicationInfo.flags) |
| + ")"); |
| task.isAvailable = false; |
| } else { |
| if (DEBUG_RECENTS && !task.isAvailable) Slog.d(TAG_RECENTS, |
| "Making recent available: " + task); |
| task.isAvailable = true; |
| } |
| } |
| } |
| } |
| |
| // Verify the affiliate chain for each task. |
| int i = 0; |
| recentsCount = mTasks.size(); |
| while (i < recentsCount) { |
| i = processNextAffiliateChainLocked(i); |
| } |
| // recent tasks are now in sorted, affiliated order. |
| } |
| |
| /** |
| * @return whether the given {@param task} can be added to the list without causing another |
| * task to be trimmed as a result of that add. |
| */ |
| private boolean canAddTaskWithoutTrim(Task task) { |
| return findRemoveIndexForAddTask(task) == -1; |
| } |
| |
| /** |
| * Returns the list of {@link ActivityManager.AppTask}s. |
| */ |
| ArrayList<IBinder> getAppTasksList(int callingUid, String callingPackage) { |
| final ArrayList<IBinder> list = new ArrayList<>(); |
| final int size = mTasks.size(); |
| for (int i = 0; i < size; i++) { |
| final Task task = mTasks.get(i); |
| // Skip tasks that do not match the caller. We don't need to verify |
| // callingPackage, because we are also limiting to callingUid and know |
| // that will limit to the correct security sandbox. |
| if (task.effectiveUid != callingUid) { |
| continue; |
| } |
| Intent intent = task.getBaseIntent(); |
| if (intent == null || !callingPackage.equals(intent.getComponent().getPackageName())) { |
| continue; |
| } |
| AppTaskImpl taskImpl = new AppTaskImpl(mService, task.mTaskId, callingUid); |
| list.add(taskImpl.asBinder()); |
| } |
| return list; |
| } |
| |
| @VisibleForTesting |
| Set<Integer> getProfileIds(int userId) { |
| Set<Integer> userIds = new ArraySet<>(); |
| int[] profileIds = mService.getUserManager().getProfileIds(userId, false /* enabledOnly */); |
| for (int i = 0; i < profileIds.length; i++) { |
| userIds.add(Integer.valueOf(profileIds[i])); |
| } |
| return userIds; |
| } |
| |
| @VisibleForTesting |
| UserInfo getUserInfo(int userId) { |
| return mService.getUserManager().getUserInfo(userId); |
| } |
| |
| @VisibleForTesting |
| int[] getCurrentProfileIds() { |
| return mService.mAmInternal.getCurrentProfileIds(); |
| } |
| |
| @VisibleForTesting |
| boolean isUserRunning(int userId, int flags) { |
| return mService.mAmInternal.isUserRunning(userId, flags); |
| } |
| |
| /** |
| * @return the list of recent tasks for presentation. |
| */ |
| ParceledListSlice<ActivityManager.RecentTaskInfo> getRecentTasks(int maxNum, int flags, |
| boolean getTasksAllowed, int userId, int callingUid) { |
| return new ParceledListSlice<>(getRecentTasksImpl(maxNum, flags, getTasksAllowed, |
| userId, callingUid)); |
| } |
| |
| /** |
| * @return the list of recent tasks for presentation. |
| */ |
| private ArrayList<ActivityManager.RecentTaskInfo> getRecentTasksImpl(int maxNum, int flags, |
| boolean getTasksAllowed, int userId, int callingUid) { |
| final boolean withExcluded = (flags & RECENT_WITH_EXCLUDED) != 0; |
| |
| if (!isUserRunning(userId, FLAG_AND_UNLOCKED)) { |
| Slog.i(TAG, "user " + userId + " is still locked. Cannot load recents"); |
| return new ArrayList<>(); |
| } |
| loadUserRecentsLocked(userId); |
| |
| final Set<Integer> includedUsers = getProfileIds(userId); |
| includedUsers.add(Integer.valueOf(userId)); |
| |
| final ArrayList<ActivityManager.RecentTaskInfo> res = new ArrayList<>(); |
| final int size = mTasks.size(); |
| int numVisibleTasks = 0; |
| for (int i = 0; i < size; i++) { |
| final Task task = mTasks.get(i); |
| |
| if (isVisibleRecentTask(task)) { |
| numVisibleTasks++; |
| if (isInVisibleRange(task, i, numVisibleTasks, withExcluded)) { |
| // Fall through |
| } else { |
| // Not in visible range |
| continue; |
| } |
| } else { |
| // Not visible |
| continue; |
| } |
| |
| // Skip remaining tasks once we reach the requested size |
| if (res.size() >= maxNum) { |
| continue; |
| } |
| |
| // Only add calling user or related users recent tasks |
| if (!includedUsers.contains(Integer.valueOf(task.mUserId))) { |
| if (DEBUG_RECENTS) Slog.d(TAG_RECENTS, "Skipping, not user: " + task); |
| continue; |
| } |
| |
| if (task.realActivitySuspended) { |
| if (DEBUG_RECENTS) Slog.d(TAG_RECENTS, "Skipping, activity suspended: " + task); |
| continue; |
| } |
| |
| if (!getTasksAllowed) { |
| // If the caller doesn't have the GET_TASKS permission, then only |
| // allow them to see a small subset of tasks -- their own and home. |
| if (!task.isActivityTypeHome() && task.effectiveUid != callingUid) { |
| if (DEBUG_RECENTS) Slog.d(TAG_RECENTS, "Skipping, not allowed: " + task); |
| continue; |
| } |
| } |
| |
| if (task.autoRemoveRecents && task.getTopNonFinishingActivity() == null) { |
| // Don't include auto remove tasks that are finished or finishing. |
| if (DEBUG_RECENTS) { |
| Slog.d(TAG_RECENTS, "Skipping, auto-remove without activity: " + task); |
| } |
| continue; |
| } |
| if ((flags & RECENT_IGNORE_UNAVAILABLE) != 0 && !task.isAvailable) { |
| if (DEBUG_RECENTS) { |
| Slog.d(TAG_RECENTS, "Skipping, unavail real act: " + task); |
| } |
| continue; |
| } |
| |
| if (!task.mUserSetupComplete) { |
| // Don't include task launched while user is not done setting-up. |
| if (DEBUG_RECENTS) { |
| Slog.d(TAG_RECENTS, "Skipping, user setup not complete: " + task); |
| } |
| continue; |
| } |
| |
| res.add(createRecentTaskInfo(task, true /* stripExtras */)); |
| } |
| return res; |
| } |
| |
| /** |
| * @return the list of persistable task ids. |
| */ |
| void getPersistableTaskIds(ArraySet<Integer> persistentTaskIds) { |
| final int size = mTasks.size(); |
| for (int i = 0; i < size; i++) { |
| final Task task = mTasks.get(i); |
| if (TaskPersister.DEBUG) Slog.d(TAG, "LazyTaskWriter: task=" + task |
| + " persistable=" + task.isPersistable); |
| final ActivityStack stack = task.getStack(); |
| if ((task.isPersistable || task.inRecents) |
| && (stack == null || !stack.isHomeOrRecentsStack())) { |
| if (TaskPersister.DEBUG) Slog.d(TAG, "adding to persistentTaskIds task=" + task); |
| persistentTaskIds.add(task.mTaskId); |
| } else { |
| if (TaskPersister.DEBUG) Slog.d(TAG, "omitting from persistentTaskIds task=" |
| + task); |
| } |
| } |
| } |
| |
| @VisibleForTesting |
| ArrayList<Task> getRawTasks() { |
| return mTasks; |
| } |
| |
| /** |
| * @return ids of tasks that are presented in Recents UI. |
| */ |
| SparseBooleanArray getRecentTaskIds() { |
| final SparseBooleanArray res = new SparseBooleanArray(); |
| final int size = mTasks.size(); |
| int numVisibleTasks = 0; |
| for (int i = 0; i < size; i++) { |
| final Task task = mTasks.get(i); |
| if (isVisibleRecentTask(task)) { |
| numVisibleTasks++; |
| if (isInVisibleRange(task, i, numVisibleTasks, false /* skipExcludedCheck */)) { |
| res.put(task.mTaskId, true); |
| } |
| } |
| } |
| return res; |
| } |
| |
| /** |
| * @return the task in the task list with the given {@param id} if one exists. |
| */ |
| Task getTask(int id) { |
| final int recentsCount = mTasks.size(); |
| for (int i = 0; i < recentsCount; i++) { |
| Task task = mTasks.get(i); |
| if (task.mTaskId == id) { |
| return task; |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Add a new task to the recent tasks list. |
| */ |
| void add(Task task) { |
| if (DEBUG_RECENTS_TRIM_TASKS) Slog.d(TAG, "add: task=" + task); |
| |
| // Only allow trimming task if it is not updating visibility for activities, so the caller |
| // doesn't need to handle unexpected size and index when looping task containers. |
| final boolean canTrimTask = !mSupervisor.inActivityVisibilityUpdate(); |
| |
| // Clean up the hidden tasks when going to home because the user may not be unable to return |
| // to the task from recents. |
| if (canTrimTask && !mHiddenTasks.isEmpty() && task.isActivityTypeHome()) { |
| removeUnreachableHiddenTasks(task.getWindowingMode()); |
| } |
| |
| final boolean isAffiliated = task.mAffiliatedTaskId != task.mTaskId |
| || task.mNextAffiliateTaskId != INVALID_TASK_ID |
| || task.mPrevAffiliateTaskId != INVALID_TASK_ID; |
| |
| int recentsCount = mTasks.size(); |
| // Quick case: never add voice sessions. |
| // TODO: VI what about if it's just an activity? |
| // Probably nothing to do here |
| if (task.voiceSession != null) { |
| if (DEBUG_RECENTS) Slog.d(TAG_RECENTS, |
| "addRecent: not adding voice interaction " + task); |
| return; |
| } |
| // Another quick case: check if the top-most recent task is the same. |
| if (!isAffiliated && recentsCount > 0 && mTasks.get(0) == task) { |
| if (DEBUG_RECENTS) Slog.d(TAG_RECENTS, "addRecent: already at top: " + task); |
| return; |
| } |
| // Another quick case: check if this is part of a set of affiliated |
| // tasks that are at the top. |
| if (isAffiliated && recentsCount > 0 && task.inRecents |
| && task.mAffiliatedTaskId == mTasks.get(0).mAffiliatedTaskId) { |
| if (DEBUG_RECENTS) Slog.d(TAG_RECENTS, "addRecent: affiliated " + mTasks.get(0) |
| + " at top when adding " + task); |
| return; |
| } |
| |
| boolean needAffiliationFix = false; |
| |
| // Slightly less quick case: the task is already in recents, so all we need |
| // to do is move it. |
| if (task.inRecents) { |
| int taskIndex = mTasks.indexOf(task); |
| if (taskIndex >= 0) { |
| if (!isAffiliated) { |
| if (!mFreezeTaskListReordering) { |
| // Simple case: this is not an affiliated task, so we just move it to the |
| // front unless overridden by the provided activity options |
| mTasks.remove(taskIndex); |
| mTasks.add(0, task); |
| |
| if (DEBUG_RECENTS) { |
| Slog.d(TAG_RECENTS, "addRecent: moving to top " + task |
| + " from " + taskIndex); |
| } |
| } |
| notifyTaskPersisterLocked(task, false); |
| return; |
| } |
| } else { |
| Slog.wtf(TAG, "Task with inRecent not in recents: " + task); |
| needAffiliationFix = true; |
| } |
| } |
| |
| if (DEBUG_RECENTS) Slog.d(TAG_RECENTS, "addRecent: trimming tasks for " + task); |
| removeForAddTask(task); |
| |
| task.inRecents = true; |
| if (!isAffiliated || needAffiliationFix) { |
| // If this is a simple non-affiliated task, or we had some failure trying to |
| // handle it as part of an affilated task, then just place it at the top. |
| mTasks.add(0, task); |
| notifyTaskAdded(task); |
| if (DEBUG_RECENTS) Slog.d(TAG_RECENTS, "addRecent: adding " + task); |
| } else if (isAffiliated) { |
| // If this is a new affiliated task, then move all of the affiliated tasks |
| // to the front and insert this new one. |
| Task other = task.mNextAffiliate; |
| if (other == null) { |
| other = task.mPrevAffiliate; |
| } |
| if (other != null) { |
| int otherIndex = mTasks.indexOf(other); |
| if (otherIndex >= 0) { |
| // Insert new task at appropriate location. |
| int taskIndex; |
| if (other == task.mNextAffiliate) { |
| // We found the index of our next affiliation, which is who is |
| // before us in the list, so add after that point. |
| taskIndex = otherIndex+1; |
| } else { |
| // We found the index of our previous affiliation, which is who is |
| // after us in the list, so add at their position. |
| taskIndex = otherIndex; |
| } |
| if (DEBUG_RECENTS) Slog.d(TAG_RECENTS, |
| "addRecent: new affiliated task added at " + taskIndex + ": " + task); |
| mTasks.add(taskIndex, task); |
| notifyTaskAdded(task); |
| |
| // Now move everything to the front. |
| if (moveAffiliatedTasksToFront(task, taskIndex)) { |
| // All went well. |
| return; |
| } |
| |
| // Uh oh... something bad in the affiliation chain, try to rebuild |
| // everything and then go through our general path of adding a new task. |
| needAffiliationFix = true; |
| } else { |
| if (DEBUG_RECENTS) Slog.d(TAG_RECENTS, |
| "addRecent: couldn't find other affiliation " + other); |
| needAffiliationFix = true; |
| } |
| } else { |
| if (DEBUG_RECENTS) Slog.d(TAG_RECENTS, |
| "addRecent: adding affiliated task without next/prev:" + task); |
| needAffiliationFix = true; |
| } |
| } |
| |
| if (needAffiliationFix) { |
| if (DEBUG_RECENTS) Slog.d(TAG_RECENTS, "addRecent: regrouping affiliations"); |
| cleanupLocked(task.mUserId); |
| } |
| |
| // Trim the set of tasks to the active set |
| if (canTrimTask) { |
| trimInactiveRecentTasks(); |
| } |
| notifyTaskPersisterLocked(task, false /* flush */); |
| } |
| |
| /** |
| * Add the task to the bottom if possible. |
| */ |
| boolean addToBottom(Task task) { |
| if (!canAddTaskWithoutTrim(task)) { |
| // Adding this task would cause the task to be removed (since it's appended at |
| // the bottom and would be trimmed) so just return now |
| return false; |
| } |
| |
| add(task); |
| return true; |
| } |
| |
| /** |
| * Remove a task from the recent tasks list. |
| */ |
| void remove(Task task) { |
| mTasks.remove(task); |
| notifyTaskRemoved(task, false /* wasTrimmed */, false /* killProcess */); |
| } |
| |
| /** |
| * Trims the recents task list to the global max number of recents. |
| */ |
| private void trimInactiveRecentTasks() { |
| if (mFreezeTaskListReordering) { |
| // Defer trimming inactive recent tasks until we are unfrozen |
| return; |
| } |
| |
| int recentsCount = mTasks.size(); |
| |
| // Remove from the end of the list until we reach the max number of recents |
| while (recentsCount > mGlobalMaxNumTasks) { |
| final Task task = mTasks.remove(recentsCount - 1); |
| notifyTaskRemoved(task, true /* wasTrimmed */, false /* killProcess */); |
| recentsCount--; |
| if (DEBUG_RECENTS_TRIM_TASKS) Slog.d(TAG, "Trimming over max-recents task=" + task |
| + " max=" + mGlobalMaxNumTasks); |
| } |
| |
| // Remove any tasks that belong to currently quiet profiles |
| final int[] profileUserIds = getCurrentProfileIds(); |
| mTmpQuietProfileUserIds.clear(); |
| for (int userId : profileUserIds) { |
| final UserInfo userInfo = getUserInfo(userId); |
| if (userInfo != null && userInfo.isManagedProfile() && userInfo.isQuietModeEnabled()) { |
| mTmpQuietProfileUserIds.put(userId, true); |
| } |
| if (DEBUG_RECENTS_TRIM_TASKS) Slog.d(TAG, "User: " + userInfo |
| + " quiet=" + mTmpQuietProfileUserIds.get(userId)); |
| } |
| |
| // Remove any inactive tasks, calculate the latest set of visible tasks. |
| int numVisibleTasks = 0; |
| for (int i = 0; i < mTasks.size();) { |
| final Task task = mTasks.get(i); |
| |
| if (isActiveRecentTask(task, mTmpQuietProfileUserIds)) { |
| if (!mHasVisibleRecentTasks) { |
| // Keep all active tasks if visible recent tasks is not supported |
| i++; |
| continue; |
| } |
| |
| if (!isVisibleRecentTask(task)) { |
| // Keep all active-but-invisible tasks |
| i++; |
| continue; |
| } else { |
| numVisibleTasks++; |
| if (isInVisibleRange(task, i, numVisibleTasks, false /* skipExcludedCheck */) |
| || !isTrimmable(task)) { |
| // Keep visible tasks in range |
| i++; |
| continue; |
| } else { |
| // Fall through to trim visible tasks that are no longer in range and |
| // trimmable |
| if (DEBUG_RECENTS_TRIM_TASKS) Slog.d(TAG, |
| "Trimming out-of-range visible task=" + task); |
| } |
| } |
| } else { |
| // Fall through to trim inactive tasks |
| if (DEBUG_RECENTS_TRIM_TASKS) Slog.d(TAG, "Trimming inactive task=" + task); |
| } |
| |
| // Task is no longer active, trim it from the list |
| mTasks.remove(task); |
| notifyTaskRemoved(task, true /* wasTrimmed */, false /* killProcess */); |
| notifyTaskPersisterLocked(task, false /* flush */); |
| } |
| } |
| |
| /** |
| * @return whether the given task should be considered active. |
| */ |
| private boolean isActiveRecentTask(Task task, SparseBooleanArray quietProfileUserIds) { |
| if (DEBUG_RECENTS_TRIM_TASKS) Slog.d(TAG, "isActiveRecentTask: task=" + task |
| + " globalMax=" + mGlobalMaxNumTasks); |
| |
| if (quietProfileUserIds.get(task.mUserId)) { |
| // Quiet profile user's tasks are never active |
| if (DEBUG_RECENTS_TRIM_TASKS) Slog.d(TAG, "\tisQuietProfileTask=true"); |
| return false; |
| } |
| |
| if (task.mAffiliatedTaskId != INVALID_TASK_ID && task.mAffiliatedTaskId != task.mTaskId) { |
| // Keep the task active if its affiliated task is also active |
| final Task affiliatedTask = getTask(task.mAffiliatedTaskId); |
| if (affiliatedTask != null) { |
| if (!isActiveRecentTask(affiliatedTask, quietProfileUserIds)) { |
| if (DEBUG_RECENTS_TRIM_TASKS) Slog.d(TAG, |
| "\taffiliatedWithTask=" + affiliatedTask + " is not active"); |
| return false; |
| } |
| } |
| } |
| |
| // All other tasks are considered active |
| return true; |
| } |
| |
| /** |
| * @return whether the given active task should be presented to the user through SystemUI. |
| */ |
| @VisibleForTesting |
| boolean isVisibleRecentTask(Task task) { |
| if (DEBUG_RECENTS_TRIM_TASKS) Slog.d(TAG, "isVisibleRecentTask: task=" + task |
| + " minVis=" + mMinNumVisibleTasks + " maxVis=" + mMaxNumVisibleTasks |
| + " sessionDuration=" + mActiveTasksSessionDurationMs |
| + " inactiveDuration=" + task.getInactiveDuration() |
| + " activityType=" + task.getActivityType() |
| + " windowingMode=" + task.getWindowingMode() |
| + " intentFlags=" + task.getBaseIntent().getFlags()); |
| |
| switch (task.getActivityType()) { |
| case ACTIVITY_TYPE_HOME: |
| case ACTIVITY_TYPE_RECENTS: |
| case ACTIVITY_TYPE_DREAM: |
| // Ignore certain activity types completely |
| return false; |
| case ACTIVITY_TYPE_ASSISTANT: |
| // Ignore assistant that chose to be excluded from Recents, even if it's a top |
| // task. |
| if ((task.getBaseIntent().getFlags() & FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) |
| == FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) { |
| return false; |
| } |
| break; |
| } |
| |
| // Ignore certain windowing modes |
| switch (task.getWindowingMode()) { |
| case WINDOWING_MODE_PINNED: |
| return false; |
| case WINDOWING_MODE_SPLIT_SCREEN_PRIMARY: |
| if (DEBUG_RECENTS_TRIM_TASKS) { |
| Slog.d(TAG, "\ttop=" + task.getStack().getTopMostTask()); |
| } |
| final ActivityStack stack = task.getStack(); |
| if (stack != null && stack.getTopMostTask() == task) { |
| // Only the non-top task of the primary split screen mode is visible |
| return false; |
| } |
| break; |
| case WINDOWING_MODE_MULTI_WINDOW: |
| // Ignore tasks that are always on top |
| if (task.isAlwaysOnTop()) { |
| return false; |
| } |
| break; |
| } |
| |
| // Tasks managed by/associated with an ActivityView should be excluded from recents. |
| // singleTaskInstance is set on the VirtualDisplay managed by ActivityView |
| // TODO(b/126185105): Find a different signal to use besides isSingleTaskInstance |
| final ActivityStack stack = task.getStack(); |
| if (stack != null) { |
| DisplayContent display = stack.getDisplay(); |
| if (display != null && display.isSingleTaskInstance()) { |
| return false; |
| } |
| } |
| |
| // If we're in lock task mode, ignore the root task |
| if (task == mService.getLockTaskController().getRootTask()) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /** |
| * @return whether the given visible task is within the policy range. |
| */ |
| private boolean isInVisibleRange(Task task, int taskIndex, int numVisibleTasks, |
| boolean skipExcludedCheck) { |
| if (!skipExcludedCheck) { |
| // Keep the most recent task even if it is excluded from recents |
| final boolean isExcludeFromRecents = |
| (task.getBaseIntent().getFlags() & FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) |
| == FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS; |
| if (isExcludeFromRecents) { |
| if (DEBUG_RECENTS_TRIM_TASKS) Slog.d(TAG, "\texcludeFromRecents=true"); |
| return taskIndex == 0; |
| } |
| } |
| |
| if (mMinNumVisibleTasks >= 0 && numVisibleTasks <= mMinNumVisibleTasks) { |
| // Always keep up to the min number of recent tasks, after that fall through to the |
| // checks below |
| return true; |
| } |
| |
| if (mMaxNumVisibleTasks >= 0) { |
| // Always keep up to the max number of recent tasks, but return false afterwards |
| return numVisibleTasks <= mMaxNumVisibleTasks; |
| } |
| |
| if (mActiveTasksSessionDurationMs > 0) { |
| // Keep the task if the inactive time is within the session window, this check must come |
| // after the checks for the min/max visible task range |
| if (task.getInactiveDuration() <= mActiveTasksSessionDurationMs) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| /** @return whether the given task can be trimmed even if it is outside the visible range. */ |
| protected boolean isTrimmable(Task task) { |
| final ActivityStack stack = task.getStack(); |
| |
| // No stack for task, just trim it |
| if (stack == null) { |
| return true; |
| } |
| |
| // Ignore tasks from different displays |
| // TODO (b/115289124): No Recents on non-default displays. |
| if (!stack.isOnHomeDisplay()) { |
| return false; |
| } |
| |
| final ActivityStack rootHomeTask = stack.getDisplayArea().getRootHomeTask(); |
| // Home stack does not exist. Don't trim the task. |
| if (rootHomeTask == null) { |
| return false; |
| } |
| // Trim tasks that are behind the home task. |
| return task.compareTo(rootHomeTask) < 0; |
| } |
| |
| /** Remove the tasks that user may not be able to return. */ |
| private void removeUnreachableHiddenTasks(int windowingMode) { |
| for (int i = mHiddenTasks.size() - 1; i >= 0; i--) { |
| final Task hiddenTask = mHiddenTasks.get(i); |
| if (!hiddenTask.hasChild() || hiddenTask.inRecents) { |
| // The task was removed by other path or it became reachable (added to recents). |
| mHiddenTasks.remove(i); |
| continue; |
| } |
| if (hiddenTask.getWindowingMode() != windowingMode |
| || hiddenTask.getTopVisibleActivity() != null) { |
| // The task may be reachable from the back stack of other windowing mode or it is |
| // currently in use. Keep the task in the hidden list to avoid losing track, e.g. |
| // after dismissing primary split screen. |
| continue; |
| } |
| mHiddenTasks.remove(i); |
| mSupervisor.removeTask(hiddenTask, false /* killProcess */, |
| !REMOVE_FROM_RECENTS, "remove-hidden-task"); |
| } |
| } |
| |
| /** |
| * If needed, remove oldest existing entries in recents that are for the same kind |
| * of task as the given one. |
| */ |
| private void removeForAddTask(Task task) { |
| // The adding task will be in recents so it is not hidden. |
| mHiddenTasks.remove(task); |
| |
| final int removeIndex = findRemoveIndexForAddTask(task); |
| if (removeIndex == -1) { |
| // Nothing to trim |
| return; |
| } |
| |
| // There is a similar task that will be removed for the addition of {@param task}, but it |
| // can be the same task, and if so, the task will be re-added in add(), so skip the |
| // callbacks here. |
| final Task removedTask = mTasks.remove(removeIndex); |
| if (removedTask != task) { |
| if (removedTask.hasChild()) { |
| // A non-empty task is replaced by a new task. Because the removed task is no longer |
| // managed by the recent tasks list, add it to the hidden list to prevent the task |
| // from becoming dangling. |
| mHiddenTasks.add(removedTask); |
| } |
| notifyTaskRemoved(removedTask, false /* wasTrimmed */, false /* killProcess */); |
| if (DEBUG_RECENTS_TRIM_TASKS) Slog.d(TAG, "Trimming task=" + removedTask |
| + " for addition of task=" + task); |
| } |
| notifyTaskPersisterLocked(removedTask, false /* flush */); |
| } |
| |
| /** |
| * Find the task that would be removed if the given {@param task} is added to the recent tasks |
| * list (if any). |
| */ |
| private int findRemoveIndexForAddTask(Task task) { |
| if (mFreezeTaskListReordering) { |
| // Defer removing tasks due to the addition of new tasks until the task list is unfrozen |
| return -1; |
| } |
| |
| final int recentsCount = mTasks.size(); |
| final Intent intent = task.intent; |
| final boolean document = intent != null && intent.isDocument(); |
| int maxRecents = task.maxRecents - 1; |
| for (int i = 0; i < recentsCount; i++) { |
| final Task t = mTasks.get(i); |
| if (task != t) { |
| if (!hasCompatibleActivityTypeAndWindowingMode(task, t) |
| || task.mUserId != t.mUserId) { |
| continue; |
| } |
| final Intent trIntent = t.intent; |
| final boolean sameAffinity = |
| task.affinity != null && task.affinity.equals(t.affinity); |
| final boolean sameIntent = intent != null && intent.filterEquals(trIntent); |
| boolean multiTasksAllowed = false; |
| final int flags = intent.getFlags(); |
| if ((flags & (FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_NEW_DOCUMENT)) != 0 |
| && (flags & FLAG_ACTIVITY_MULTIPLE_TASK) != 0) { |
| multiTasksAllowed = true; |
| } |
| final boolean trIsDocument = trIntent != null && trIntent.isDocument(); |
| final boolean bothDocuments = document && trIsDocument; |
| if (!sameAffinity && !sameIntent && !bothDocuments) { |
| continue; |
| } |
| |
| if (bothDocuments) { |
| // Do these documents belong to the same activity? |
| final boolean sameActivity = task.realActivity != null |
| && t.realActivity != null |
| && task.realActivity.equals(t.realActivity); |
| if (!sameActivity) { |
| // If the document is open in another app or is not the same document, we |
| // don't need to trim it. |
| continue; |
| } else if (maxRecents > 0) { |
| --maxRecents; |
| if (!sameIntent || multiTasksAllowed) { |
| // We don't want to trim if we are not over the max allowed entries and |
| // the tasks are not of the same intent filter, or multiple entries for |
| // the task is allowed. |
| continue; |
| } |
| } |
| // Hit the maximum number of documents for this task. Fall through |
| // and remove this document from recents. |
| } else if (document || trIsDocument) { |
| // Only one of these is a document. Not the droid we're looking for. |
| continue; |
| } |
| } |
| return i; |
| } |
| return -1; |
| } |
| |
| // Extract the affiliates of the chain containing recent at index start. |
| private int processNextAffiliateChainLocked(int start) { |
| final Task startTask = mTasks.get(start); |
| final int affiliateId = startTask.mAffiliatedTaskId; |
| |
| // Quick identification of isolated tasks. I.e. those not launched behind. |
| if (startTask.mTaskId == affiliateId && startTask.mPrevAffiliate == null && |
| startTask.mNextAffiliate == null) { |
| // There is still a slim chance that there are other tasks that point to this task |
| // and that the chain is so messed up that this task no longer points to them but |
| // the gain of this optimization outweighs the risk. |
| startTask.inRecents = true; |
| return start + 1; |
| } |
| |
| // Remove all tasks that are affiliated to affiliateId and put them in mTmpRecents. |
| mTmpRecents.clear(); |
| for (int i = mTasks.size() - 1; i >= start; --i) { |
| final Task task = mTasks.get(i); |
| if (task.mAffiliatedTaskId == affiliateId) { |
| mTasks.remove(i); |
| mTmpRecents.add(task); |
| } |
| } |
| |
| // Sort them all by taskId. That is the order they were create in and that order will |
| // always be correct. |
| Collections.sort(mTmpRecents, TASK_ID_COMPARATOR); |
| |
| // Go through and fix up the linked list. |
| // The first one is the end of the chain and has no next. |
| final Task first = mTmpRecents.get(0); |
| first.inRecents = true; |
| if (first.mNextAffiliate != null) { |
| Slog.w(TAG, "Link error 1 first.next=" + first.mNextAffiliate); |
| first.setNextAffiliate(null); |
| notifyTaskPersisterLocked(first, false); |
| } |
| // Everything in the middle is doubly linked from next to prev. |
| final int tmpSize = mTmpRecents.size(); |
| for (int i = 0; i < tmpSize - 1; ++i) { |
| final Task next = mTmpRecents.get(i); |
| final Task prev = mTmpRecents.get(i + 1); |
| if (next.mPrevAffiliate != prev) { |
| Slog.w(TAG, "Link error 2 next=" + next + " prev=" + next.mPrevAffiliate + |
| " setting prev=" + prev); |
| next.setPrevAffiliate(prev); |
| notifyTaskPersisterLocked(next, false); |
| } |
| if (prev.mNextAffiliate != next) { |
| Slog.w(TAG, "Link error 3 prev=" + prev + " next=" + prev.mNextAffiliate + |
| " setting next=" + next); |
| prev.setNextAffiliate(next); |
| notifyTaskPersisterLocked(prev, false); |
| } |
| prev.inRecents = true; |
| } |
| // The last one is the beginning of the list and has no prev. |
| final Task last = mTmpRecents.get(tmpSize - 1); |
| if (last.mPrevAffiliate != null) { |
| Slog.w(TAG, "Link error 4 last.prev=" + last.mPrevAffiliate); |
| last.setPrevAffiliate(null); |
| notifyTaskPersisterLocked(last, false); |
| } |
| |
| // Insert the group back into mTmpTasks at start. |
| mTasks.addAll(start, mTmpRecents); |
| mTmpRecents.clear(); |
| |
| // Let the caller know where we left off. |
| return start + tmpSize; |
| } |
| |
| private boolean moveAffiliatedTasksToFront(Task task, int taskIndex) { |
| int recentsCount = mTasks.size(); |
| Task top = task; |
| int topIndex = taskIndex; |
| while (top.mNextAffiliate != null && topIndex > 0) { |
| top = top.mNextAffiliate; |
| topIndex--; |
| } |
| if (DEBUG_RECENTS) Slog.d(TAG_RECENTS, "addRecent: adding affilliates starting at " |
| + topIndex + " from intial " + taskIndex); |
| // Find the end of the chain, doing a sanity check along the way. |
| boolean sane = top.mAffiliatedTaskId == task.mAffiliatedTaskId; |
| int endIndex = topIndex; |
| Task prev = top; |
| while (endIndex < recentsCount) { |
| Task cur = mTasks.get(endIndex); |
| if (DEBUG_RECENTS) Slog.d(TAG_RECENTS, "addRecent: looking at next chain @" |
| + endIndex + " " + cur); |
| if (cur == top) { |
| // Verify start of the chain. |
| if (cur.mNextAffiliate != null || cur.mNextAffiliateTaskId != INVALID_TASK_ID) { |
| Slog.wtf(TAG, "Bad chain @" + endIndex |
| + ": first task has next affiliate: " + prev); |
| sane = false; |
| break; |
| } |
| } else { |
| // Verify middle of the chain's next points back to the one before. |
| if (cur.mNextAffiliate != prev |
| || cur.mNextAffiliateTaskId != prev.mTaskId) { |
| Slog.wtf(TAG, "Bad chain @" + endIndex |
| + ": middle task " + cur + " @" + endIndex |
| + " has bad next affiliate " |
| + cur.mNextAffiliate + " id " + cur.mNextAffiliateTaskId |
| + ", expected " + prev); |
| sane = false; |
| break; |
| } |
| } |
| if (cur.mPrevAffiliateTaskId == INVALID_TASK_ID) { |
| // Chain ends here. |
| if (cur.mPrevAffiliate != null) { |
| Slog.wtf(TAG, "Bad chain @" + endIndex |
| + ": last task " + cur + " has previous affiliate " |
| + cur.mPrevAffiliate); |
| sane = false; |
| } |
| if (DEBUG_RECENTS) Slog.d(TAG_RECENTS, "addRecent: end of chain @" + endIndex); |
| break; |
| } else { |
| // Verify middle of the chain's prev points to a valid item. |
| if (cur.mPrevAffiliate == null) { |
| Slog.wtf(TAG, "Bad chain @" + endIndex |
| + ": task " + cur + " has previous affiliate " |
| + cur.mPrevAffiliate + " but should be id " |
| + cur.mPrevAffiliate); |
| sane = false; |
| break; |
| } |
| } |
| if (cur.mAffiliatedTaskId != task.mAffiliatedTaskId) { |
| Slog.wtf(TAG, "Bad chain @" + endIndex |
| + ": task " + cur + " has affiliated id " |
| + cur.mAffiliatedTaskId + " but should be " |
| + task.mAffiliatedTaskId); |
| sane = false; |
| break; |
| } |
| prev = cur; |
| endIndex++; |
| if (endIndex >= recentsCount) { |
| Slog.wtf(TAG, "Bad chain ran off index " + endIndex |
| + ": last task " + prev); |
| sane = false; |
| break; |
| } |
| } |
| if (sane) { |
| if (endIndex < taskIndex) { |
| Slog.wtf(TAG, "Bad chain @" + endIndex |
| + ": did not extend to task " + task + " @" + taskIndex); |
| sane = false; |
| } |
| } |
| if (sane) { |
| // All looks good, we can just move all of the affiliated tasks |
| // to the top. |
| for (int i=topIndex; i<=endIndex; i++) { |
| if (DEBUG_RECENTS) Slog.d(TAG_RECENTS, "addRecent: moving affiliated " + task |
| + " from " + i + " to " + (i-topIndex)); |
| Task cur = mTasks.remove(i); |
| mTasks.add(i - topIndex, cur); |
| } |
| if (DEBUG_RECENTS) Slog.d(TAG_RECENTS, "addRecent: done moving tasks " + topIndex |
| + " to " + endIndex); |
| return true; |
| } |
| |
| // Whoops, couldn't do it. |
| return false; |
| } |
| |
| void dump(PrintWriter pw, boolean dumpAll, String dumpPackage) { |
| pw.println("ACTIVITY MANAGER RECENT TASKS (dumpsys activity recents)"); |
| pw.println("mRecentsUid=" + mRecentsUid); |
| pw.println("mRecentsComponent=" + mRecentsComponent); |
| pw.println("mFreezeTaskListReordering=" + mFreezeTaskListReordering); |
| pw.println("mFreezeTaskListReorderingPendingTimeout=" |
| + mService.mH.hasCallbacks(mResetFreezeTaskListOnTimeoutRunnable)); |
| if (!mHiddenTasks.isEmpty()) { |
| pw.println("mHiddenTasks=" + mHiddenTasks); |
| } |
| if (mTasks.isEmpty()) { |
| return; |
| } |
| |
| // Dump raw recent task list |
| boolean printedAnything = false; |
| boolean printedHeader = false; |
| final int size = mTasks.size(); |
| for (int i = 0; i < size; i++) { |
| final Task task = mTasks.get(i); |
| if (dumpPackage != null) { |
| boolean match = task.intent != null |
| && task.intent.getComponent() != null |
| && dumpPackage.equals( |
| task.intent.getComponent().getPackageName()); |
| if (!match) { |
| match |= task.affinityIntent != null |
| && task.affinityIntent.getComponent() != null |
| && dumpPackage.equals( |
| task.affinityIntent.getComponent().getPackageName()); |
| } |
| if (!match) { |
| match |= task.origActivity != null |
| && dumpPackage.equals(task.origActivity.getPackageName()); |
| } |
| if (!match) { |
| match |= task.realActivity != null |
| && dumpPackage.equals(task.realActivity.getPackageName()); |
| } |
| if (!match) { |
| match |= dumpPackage.equals(task.mCallingPackage); |
| } |
| if (!match) { |
| continue; |
| } |
| } |
| |
| if (!printedHeader) { |
| pw.println(" Recent tasks:"); |
| printedHeader = true; |
| printedAnything = true; |
| } |
| pw.print(" * Recent #"); pw.print(i); pw.print(": "); |
| pw.println(task); |
| if (dumpAll) { |
| task.dump(pw, " "); |
| } |
| } |
| |
| // Dump visible recent task list |
| if (mHasVisibleRecentTasks) { |
| // Reset the header flag for the next block |
| printedHeader = false; |
| ArrayList<ActivityManager.RecentTaskInfo> tasks = getRecentTasksImpl(Integer.MAX_VALUE, |
| 0, true /* getTasksAllowed */, mService.getCurrentUserId(), SYSTEM_UID); |
| for (int i = 0; i < tasks.size(); i++) { |
| final ActivityManager.RecentTaskInfo taskInfo = tasks.get(i); |
| if (dumpPackage != null) { |
| boolean match = taskInfo.baseIntent != null |
| && taskInfo.baseIntent.getComponent() != null |
| && dumpPackage.equals( |
| taskInfo.baseIntent.getComponent().getPackageName()); |
| if (!match) { |
| match |= taskInfo.baseActivity != null |
| && dumpPackage.equals(taskInfo.baseActivity.getPackageName()); |
| } |
| if (!match) { |
| match |= taskInfo.topActivity != null |
| && dumpPackage.equals(taskInfo.topActivity.getPackageName()); |
| } |
| if (!match) { |
| match |= taskInfo.origActivity != null |
| && dumpPackage.equals(taskInfo.origActivity.getPackageName()); |
| } |
| if (!match) { |
| match |= taskInfo.realActivity != null |
| && dumpPackage.equals(taskInfo.realActivity.getPackageName()); |
| } |
| if (!match) { |
| continue; |
| } |
| } |
| if (!printedHeader) { |
| if (printedAnything) { |
| // Separate from the last block if it printed |
| pw.println(); |
| } |
| pw.println(" Visible recent tasks (most recent first):"); |
| printedHeader = true; |
| printedAnything = true; |
| } |
| |
| pw.print(" * RecentTaskInfo #"); pw.print(i); pw.print(": "); |
| taskInfo.dump(pw, " "); |
| } |
| } |
| |
| if (!printedAnything) { |
| pw.println(" (nothing)"); |
| } |
| } |
| |
| /** |
| * Creates a new RecentTaskInfo from a Task. |
| */ |
| ActivityManager.RecentTaskInfo createRecentTaskInfo(Task tr, boolean stripExtras) { |
| ActivityManager.RecentTaskInfo rti = new ActivityManager.RecentTaskInfo(); |
| tr.fillTaskInfo(rti, stripExtras); |
| // Fill in some deprecated values |
| rti.id = rti.isRunning ? rti.taskId : INVALID_TASK_ID; |
| rti.persistentId = rti.taskId; |
| return rti; |
| } |
| |
| /** |
| * @return Whether the activity types and windowing modes of the two tasks are considered |
| * compatible. This is necessary because we currently don't persist the activity type |
| * or the windowing mode with the task, so they can be undefined when restored. |
| */ |
| private boolean hasCompatibleActivityTypeAndWindowingMode(Task t1, Task t2) { |
| final int activityType = t1.getActivityType(); |
| final int windowingMode = t1.getWindowingMode(); |
| final boolean isUndefinedType = activityType == ACTIVITY_TYPE_UNDEFINED; |
| final boolean isUndefinedMode = windowingMode == WINDOWING_MODE_UNDEFINED; |
| final int otherActivityType = t2.getActivityType(); |
| final int otherWindowingMode = t2.getWindowingMode(); |
| final boolean isOtherUndefinedType = otherActivityType == ACTIVITY_TYPE_UNDEFINED; |
| final boolean isOtherUndefinedMode = otherWindowingMode == WINDOWING_MODE_UNDEFINED; |
| |
| // An activity type and windowing mode is compatible if they are the exact same type/mode, |
| // or if one of the type/modes is undefined |
| final boolean isCompatibleType = activityType == otherActivityType |
| || isUndefinedType || isOtherUndefinedType; |
| final boolean isCompatibleMode = windowingMode == otherWindowingMode |
| || isUndefinedMode || isOtherUndefinedMode; |
| |
| return isCompatibleType && isCompatibleMode; |
| } |
| } |
