Merge "Fixed a bug with public notifications" into nyc-dev
diff --git a/api/current.txt b/api/current.txt
index 2ccf5067..45869ad 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -22753,6 +22753,7 @@
     method public static final android.net.Uri buildProgramsUriForChannel(android.net.Uri, long, long);
     method public static final android.net.Uri buildRecordedProgramUri(long);
     field public static final java.lang.String AUTHORITY = "android.media.tv";
+    field public static final java.lang.String PERMISSION_READ_TV_LISTINGS = "android.permission.READ_TV_LISTINGS";
   }
 
   public static abstract interface TvContract.BaseTvColumns implements android.provider.BaseColumns {
diff --git a/api/system-current.txt b/api/system-current.txt
index c40b4f29..8345980 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -24376,6 +24376,7 @@
     method public static final android.net.Uri buildRecordedProgramUri(long);
     method public static final boolean isChannelUriForPassthroughInput(android.net.Uri);
     field public static final java.lang.String AUTHORITY = "android.media.tv";
+    field public static final java.lang.String PERMISSION_READ_TV_LISTINGS = "android.permission.READ_TV_LISTINGS";
   }
 
   public static abstract interface TvContract.BaseTvColumns implements android.provider.BaseColumns {
diff --git a/api/test-current.txt b/api/test-current.txt
index 4b6b9be..d0650ed 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -22762,6 +22762,7 @@
     method public static final android.net.Uri buildProgramsUriForChannel(android.net.Uri, long, long);
     method public static final android.net.Uri buildRecordedProgramUri(long);
     field public static final java.lang.String AUTHORITY = "android.media.tv";
+    field public static final java.lang.String PERMISSION_READ_TV_LISTINGS = "android.permission.READ_TV_LISTINGS";
   }
 
   public static abstract interface TvContract.BaseTvColumns implements android.provider.BaseColumns {
diff --git a/core/java/android/provider/BlockedNumberContract.java b/core/java/android/provider/BlockedNumberContract.java
index ed7c7c5..b921351 100644
--- a/core/java/android/provider/BlockedNumberContract.java
+++ b/core/java/android/provider/BlockedNumberContract.java
@@ -239,20 +239,20 @@
     public static class SystemContract {
         /**
          * A protected broadcast intent action for letting components with
-         * {@link android.Manifest.permission#READ_BLOCKED_NUMBERS} know that the block suppressal
-         * status as returned by {@link #getBlockSuppressalStatus(Context)} has been updated.
+         * {@link android.Manifest.permission#READ_BLOCKED_NUMBERS} know that the block suppression
+         * status as returned by {@link #getBlockSuppressionStatus(Context)} has been updated.
          */
-        public static final String ACTION_BLOCK_SUPPRESSAL_STATE_CHANGED =
-                "android.provider.action.BLOCK_SUPPRESSAL_STATE_CHANGED";
+        public static final String ACTION_BLOCK_SUPPRESSION_STATE_CHANGED =
+                "android.provider.action.BLOCK_SUPPRESSION_STATE_CHANGED";
 
         public static final String METHOD_NOTIFY_EMERGENCY_CONTACT = "notify_emergency_contact";
 
-        public static final String METHOD_END_BLOCK_SUPPRESSAL = "end_block_suppressal";
+        public static final String METHOD_END_BLOCK_SUPPRESSION = "end_block_suppression";
 
         public static final String METHOD_SHOULD_SYSTEM_BLOCK_NUMBER = "should_system_block_number";
 
-        public static final String METHOD_GET_BLOCK_SUPPRESSAL_STATUS =
-                "get_block_suppresal_status";
+        public static final String METHOD_GET_BLOCK_SUPPRESSION_STATUS =
+                "get_block_suppression_status";
 
         public static final String RES_IS_BLOCKING_SUPPRESSED = "blocking_suppressed";
 
@@ -264,7 +264,7 @@
          * <p> This results in {@link #shouldSystemBlockNumber} returning {@code false} independent
          * of the contents of the provider for a duration defined by
          * {@link android.telephony.CarrierConfigManager#KEY_DURATION_BLOCKING_DISABLED_AFTER_EMERGENCY_INT}
-         * the provider unless {@link #endBlockSuppressal(Context)} is called.
+         * the provider unless {@link #endBlockSuppression(Context)} is called.
          */
         public static void notifyEmergencyContact(Context context) {
             context.getContentResolver().call(
@@ -275,9 +275,9 @@
          * Notifies the provider to disable suppressing blocking. If emergency services were not
          * contacted recently at all, calling this method is a no-op.
          */
-        public static void endBlockSuppressal(Context context) {
+        public static void endBlockSuppression(Context context) {
             context.getContentResolver().call(
-                    AUTHORITY_URI, METHOD_END_BLOCK_SUPPRESSAL, null, null);
+                    AUTHORITY_URI, METHOD_END_BLOCK_SUPPRESSION, null, null);
         }
 
         /**
@@ -292,26 +292,26 @@
             return res != null && res.getBoolean(RES_NUMBER_IS_BLOCKED, false);
         }
 
-        public static BlockSuppressalStatus getBlockSuppressalStatus(Context context) {
+        public static BlockSuppressionStatus getBlockSuppressionStatus(Context context) {
             final Bundle res = context.getContentResolver().call(
-                    AUTHORITY_URI, METHOD_GET_BLOCK_SUPPRESSAL_STATUS, null, null);
-            return new BlockSuppressalStatus(res.getBoolean(RES_IS_BLOCKING_SUPPRESSED, false),
+                    AUTHORITY_URI, METHOD_GET_BLOCK_SUPPRESSION_STATUS, null, null);
+            return new BlockSuppressionStatus(res.getBoolean(RES_IS_BLOCKING_SUPPRESSED, false),
                     res.getLong(RES_BLOCKING_SUPPRESSED_UNTIL_TIMESTAMP, 0));
         }
 
         /**
          * Represents the current status of {@link #shouldSystemBlockNumber(Context, String)}. If
          * emergency services have been contacted recently, {@link #isSuppressed} is {@code true},
-         *  and blocking is disabled until the timestamp {@link #untilTimestampMillis}.
+         * and blocking is disabled until the timestamp {@link #untilTimestampMillis}.
          */
-        public static class BlockSuppressalStatus {
+        public static class BlockSuppressionStatus {
             public final boolean isSuppressed;
             /**
              * Timestamp in milliseconds from epoch.
              */
             public final long untilTimestampMillis;
 
-            public BlockSuppressalStatus(boolean isSuppressed, long untilTimestampMillis) {
+            public BlockSuppressionStatus(boolean isSuppressed, long untilTimestampMillis) {
                 this.isSuppressed = isSuppressed;
                 this.untilTimestampMillis = untilTimestampMillis;
             }
diff --git a/libs/hwui/BakedOpDispatcher.cpp b/libs/hwui/BakedOpDispatcher.cpp
index f83e1fa..78764b5 100644
--- a/libs/hwui/BakedOpDispatcher.cpp
+++ b/libs/hwui/BakedOpDispatcher.cpp
@@ -334,15 +334,15 @@
 }
 
 static void renderPathTexture(BakedOpRenderer& renderer, const BakedOpState& state,
-        PathTexture& texture, const RecordedOp& op) {
+        float xOffset, float yOffset, PathTexture& texture, const SkPaint& paint) {
     Rect dest(texture.width(), texture.height());
-    dest.translate(texture.left - texture.offset,
-            texture.top - texture.offset);
+    dest.translate(xOffset + texture.left - texture.offset,
+            yOffset + texture.top - texture.offset);
     Glop glop;
     GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
             .setRoundRectClipState(state.roundRectClipState)
             .setMeshTexturedUnitQuad(nullptr)
-            .setFillPathTexturePaint(texture, *(op.paint), state.alpha)
+            .setFillPathTexturePaint(texture, paint, state.alpha)
             .setTransform(state.computedState.transform,  TransformFlags::None)
             .setModelViewMapUnitToRect(dest)
             .build();
@@ -368,7 +368,8 @@
                 op.startAngle, op.sweepAngle, op.useCenter, op.paint);
         const AutoTexture holder(texture);
         if (CC_LIKELY(holder.texture)) {
-            renderPathTexture(renderer, state, *texture, op);
+            renderPathTexture(renderer, state, op.unmappedBounds.left, op.unmappedBounds.right,
+                    *texture, *(op.paint));
         }
     } else {
         SkRect rect = getBoundsOfFill(op);
@@ -519,7 +520,8 @@
                 op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(), op.paint);
         const AutoTexture holder(texture);
         if (CC_LIKELY(holder.texture)) {
-            renderPathTexture(renderer, state, *texture, op);
+            renderPathTexture(renderer, state, op.unmappedBounds.left, op.unmappedBounds.right,
+                    *texture, *(op.paint));
         }
     } else {
         SkPath path;
@@ -562,7 +564,9 @@
     PathTexture* texture = renderer.caches().pathCache.get(op.path, op.paint);
     const AutoTexture holder(texture);
     if (CC_LIKELY(holder.texture)) {
-        renderPathTexture(renderer, state, *texture, op);
+        // Unlike other callers to renderPathTexture, no offsets are used because PathOp doesn't
+        // have any translate built in, other than what's in the SkPath itself
+        renderPathTexture(renderer, state, 0, 0, *texture, *(op.paint));
     }
 }
 
@@ -588,7 +592,8 @@
                      op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(), op.paint);
              const AutoTexture holder(texture);
              if (CC_LIKELY(holder.texture)) {
-                 renderPathTexture(renderer, state, *texture, op);
+                 renderPathTexture(renderer, state, op.unmappedBounds.left, op.unmappedBounds.top,
+                         *texture, *(op.paint));
              }
         } else {
             SkPath path;
@@ -622,7 +627,8 @@
                 op.rx, op.ry, op.paint);
         const AutoTexture holder(texture);
         if (CC_LIKELY(holder.texture)) {
-            renderPathTexture(renderer, state, *texture, op);
+            renderPathTexture(renderer, state, op.unmappedBounds.left, op.unmappedBounds.top,
+                    *texture, *(op.paint));
         }
     } else {
         const VertexBuffer* buffer = renderer.caches().tessellationCache.getRoundRect(
diff --git a/media/java/android/media/tv/TvContract.java b/media/java/android/media/tv/TvContract.java
index 1c11842..3e6aa9f 100644
--- a/media/java/android/media/tv/TvContract.java
+++ b/media/java/android/media/tv/TvContract.java
@@ -53,6 +53,12 @@
     /** The authority for the TV provider. */
     public static final String AUTHORITY = "android.media.tv";
 
+    /**
+     * Permission to read TV listings. This is required to read all the TV channel and program
+     * information available on the system.
+     */
+    public static final String PERMISSION_READ_TV_LISTINGS = "android.permission.READ_TV_LISTINGS";
+
     private static final String PATH_CHANNEL = "channel";
     private static final String PATH_PROGRAM = "program";
     private static final String PATH_RECORDED_PROGRAM = "recorded_program";
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index 8c04fbc..5ec2aca 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -1894,7 +1894,7 @@
             case SYSTEM_USER_UNLOCK_MSG: {
                 final int userId = msg.arg1;
                 mSystemServiceManager.unlockUser(userId);
-                mRecentTasks.cleanupLocked(userId);
+                mRecentTasks.loadUserRecentsLocked(userId);
                 installEncryptionUnawareProviders(userId);
                 break;
             }
@@ -2541,7 +2541,7 @@
     }
 
     void onUserStoppedLocked(int userId) {
-        mRecentTasks.unloadUserRecentsLocked(userId);
+        mRecentTasks.unloadUserDataFromMemoryLocked(userId);
     }
 
     public void initPowerManagement() {
@@ -8739,6 +8739,10 @@
                     android.Manifest.permission.GET_DETAILED_TASKS)
                     == PackageManager.PERMISSION_GRANTED;
 
+            if (!isUserRunning(userId, ActivityManager.FLAG_AND_UNLOCKED)) {
+                Slog.i(TAG, "user " + userId + " is still locked. Cannot load recents");
+                return Collections.emptyList();
+            }
             mRecentTasks.loadUserRecentsLocked(userId);
 
             final int recentsCount = mRecentTasks.size();
@@ -12560,7 +12564,7 @@
             // Make sure we have the current profile info, since it is needed for security checks.
             mUserController.onSystemReady();
 
-            mRecentTasks.onSystemReady();
+            mRecentTasks.onSystemReadyLocked();
             // Check to see if there are any update receivers to run.
             if (!mDidUpdate) {
                 if (mWaitingUpdate) {
@@ -18629,8 +18633,15 @@
                             }
                         }
                         if ((cr.flags&Context.BIND_NOT_FOREGROUND) == 0) {
-                            if (client.curSchedGroup == Process.THREAD_GROUP_DEFAULT) {
-                                schedGroup = Process.THREAD_GROUP_DEFAULT;
+                            // This will treat important bound services identically to
+                            // the top app, which may behave differently than generic
+                            // foreground work.
+                            if (client.curSchedGroup > schedGroup) {
+                                if ((cr.flags&Context.BIND_IMPORTANT) != 0) {
+                                    schedGroup = client.curSchedGroup;
+                                } else {
+                                    schedGroup = Process.THREAD_GROUP_DEFAULT;
+                                }
                             }
                             if (clientProcState <= ActivityManager.PROCESS_STATE_TOP) {
                                 if (clientProcState == ActivityManager.PROCESS_STATE_TOP) {
@@ -18694,11 +18705,15 @@
                     final ActivityRecord a = cr.activity;
                     if ((cr.flags&Context.BIND_ADJUST_WITH_ACTIVITY) != 0) {
                         if (a != null && adj > ProcessList.FOREGROUND_APP_ADJ &&
-                                (a.visible || a.state == ActivityState.RESUMED
-                                 || a.state == ActivityState.PAUSING)) {
+                            (a.visible || a.state == ActivityState.RESUMED ||
+                             a.state == ActivityState.PAUSING)) {
                             adj = ProcessList.FOREGROUND_APP_ADJ;
                             if ((cr.flags&Context.BIND_NOT_FOREGROUND) == 0) {
-                                schedGroup = Process.THREAD_GROUP_DEFAULT;
+                                if ((cr.flags&Context.BIND_IMPORTANT) != 0) {
+                                    schedGroup = Process.THREAD_GROUP_TOP_APP;
+                                } else {
+                                    schedGroup = Process.THREAD_GROUP_DEFAULT;
+                                }
                             }
                             app.cached = false;
                             app.adjType = "service";
@@ -18778,7 +18793,7 @@
                 if (procState > clientProcState) {
                     procState = clientProcState;
                 }
-                if (client.curSchedGroup == Process.THREAD_GROUP_DEFAULT) {
+                if (client.curSchedGroup > schedGroup) {
                     schedGroup = Process.THREAD_GROUP_DEFAULT;
                 }
             }
diff --git a/services/core/java/com/android/server/am/ActivityStackSupervisor.java b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
index 9562f94..257e333 100644
--- a/services/core/java/com/android/server/am/ActivityStackSupervisor.java
+++ b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
@@ -719,14 +719,14 @@
     }
 
     int getNextTaskIdForUserLocked(int userId) {
-        mRecentTasks.loadUserRecentsLocked(userId);
         final int currentTaskId = mCurTaskIdForUser.get(userId, userId * MAX_TASK_IDS_PER_USER);
         // for a userId u, a taskId can only be in the range
         // [u*MAX_TASK_IDS_PER_USER, (u+1)*MAX_TASK_IDS_PER_USER-1], so if MAX_TASK_IDS_PER_USER
         // was 10, user 0 could only have taskIds 0 to 9, user 1: 10 to 19, user 2: 20 to 29, so on.
         int candidateTaskId = currentTaskId;
-        while (anyTaskForIdLocked(candidateTaskId, !RESTORE_FROM_RECENTS,
-                INVALID_STACK_ID) != null) {
+        while (mRecentTasks.taskIdTakenForUserLocked(candidateTaskId, userId)
+                || anyTaskForIdLocked(candidateTaskId, !RESTORE_FROM_RECENTS,
+                        INVALID_STACK_ID) != null) {
             candidateTaskId++;
             if (candidateTaskId == (userId + 1) * MAX_TASK_IDS_PER_USER) {
                 // Wrap around as there will be smaller task ids that are available now.
diff --git a/services/core/java/com/android/server/am/RecentTasks.java b/services/core/java/com/android/server/am/RecentTasks.java
index 9c139d5..7209814 100644
--- a/services/core/java/com/android/server/am/RecentTasks.java
+++ b/services/core/java/com/android/server/am/RecentTasks.java
@@ -37,8 +37,12 @@
 import android.graphics.Bitmap;
 import android.os.Environment;
 import android.os.RemoteException;
+import android.os.SystemClock;
 import android.os.UserHandle;
+import android.provider.Settings.System;
+import android.util.ArraySet;
 import android.util.Slog;
+import android.util.SparseArray;
 import android.util.SparseBooleanArray;
 
 import java.io.File;
@@ -59,12 +63,22 @@
 
     // Maximum number recent bitmaps to keep in memory.
     private static final int MAX_RECENT_BITMAPS = 3;
+    private static final int DEFAULT_INITIAL_CAPACITY = 5;
 
     /**
      * Save recent tasks information across reboots.
      */
     private final TaskPersister mTaskPersister;
-    private final SparseBooleanArray mUsersWithRecentsLoaded = new SparseBooleanArray(5);
+    private final ActivityManagerService mService;
+    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.
+     */
+    final SparseArray<SparseBooleanArray> mPersistedTaskIds = new SparseArray<>(
+            DEFAULT_INITIAL_CAPACITY);
 
     // Mainly to avoid object recreation on multiple calls.
     private final ArrayList<TaskRecord> mTmpRecents = new ArrayList<TaskRecord>();
@@ -75,6 +89,7 @@
 
     RecentTasks(ActivityManagerService service, ActivityStackSupervisor mStackSupervisor) {
         File systemDir = Environment.getDataSystemDirectory();
+        mService = service;
         mTaskPersister = new TaskPersister(systemDir, mStackSupervisor, service, this);
         mStackSupervisor.setRecentTasks(this);
     }
@@ -87,6 +102,8 @@
      */
     void loadUserRecentsLocked(int userId) {
         if (!mUsersWithRecentsLoaded.get(userId)) {
+            // Load the task ids if not loaded.
+            loadPersistedTaskIdsForUserLocked(userId);
             Slog.i(TAG, "Loading recents for user " + userId + " into memory.");
             addAll(mTaskPersister.restoreTasksForUserLocked(userId));
             cleanupLocked(userId);
@@ -94,21 +111,49 @@
         }
     }
 
+    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));
+        }
+    }
+
+    boolean taskIdTakenForUserLocked(int taskId, int userId) {
+        loadPersistedTaskIdsForUserLocked(userId);
+        return mPersistedTaskIds.get(userId).get(taskId);
+    }
+
     void notifyTaskPersisterLocked(TaskRecord task, boolean flush) {
         if (task != null && task.stack != null && task.stack.isHomeStack()) {
             // Never persist the home stack.
             return;
         }
+        syncPersistentTaskIdsLocked();
         mTaskPersister.wakeup(task, flush);
     }
 
-    void onSystemReady() {
-        clear();
-        loadUserRecentsLocked(UserHandle.USER_SYSTEM);
-        startPersisting();
+    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 = size() - 1; i >= 0; i--) {
+            TaskRecord task = get(i);
+            if (task.isPersistable && (task.stack == null || !task.stack.isHomeStack())) {
+                // Set of persisted taskIds for task.userId should not be null here
+                mPersistedTaskIds.get(task.userId).put(task.taskId, true);
+            }
+        }
     }
 
-    void startPersisting() {
+
+    void onSystemReadyLocked() {
+        clear();
         mTaskPersister.startPersisting();
     }
 
@@ -125,11 +170,14 @@
     }
 
     void flush() {
+        synchronized (mService) {
+            syncPersistentTaskIdsLocked();
+        }
         mTaskPersister.flush();
     }
 
     /**
-     * Returns all userIds for which recents from storage are loaded
+     * Returns all userIds for which recents from persistent storage are loaded into this list.
      *
      * @return an array of userIds.
      */
@@ -149,12 +197,7 @@
         return usersWithRecentsLoaded;
     }
 
-    /**
-     * Removes recent tasks for this user if they are loaded, does not do anything otherwise.
-     *
-     * @param userId the user id.
-     */
-    void unloadUserRecentsLocked(int userId) {
+    private void unloadUserRecentsLocked(int userId) {
         if (mUsersWithRecentsLoaded.get(userId)) {
             Slog.i(TAG, "Unloading recents for user " + userId + " from memory.");
             mUsersWithRecentsLoaded.delete(userId);
@@ -162,6 +205,18 @@
         }
     }
 
+    /**
+     * 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) {
+        unloadUserRecentsLocked(userId);
+        mPersistedTaskIds.delete(userId);
+        mTaskPersister.unloadUserDataFromMemory(userId);
+    }
+
     TaskRecord taskForIdLocked(int id) {
         final int recentsCount = size();
         for (int i = 0; i < recentsCount; i++) {
diff --git a/services/core/java/com/android/server/am/TaskPersister.java b/services/core/java/com/android/server/am/TaskPersister.java
index 283939e..11fd3bc 100644
--- a/services/core/java/com/android/server/am/TaskPersister.java
+++ b/services/core/java/com/android/server/am/TaskPersister.java
@@ -16,6 +16,9 @@
 
 package com.android.server.am;
 
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.app.ActivityManager;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.os.Debug;
@@ -26,11 +29,13 @@
 import android.util.ArraySet;
 import android.util.AtomicFile;
 import android.util.Slog;
+import android.util.SparseArray;
+import android.util.SparseBooleanArray;
 import android.util.Xml;
 
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.util.FastXmlSerializer;
 import com.android.internal.util.XmlUtils;
-
 import libcore.io.IoUtils;
 
 import org.xmlpull.v1.XmlPullParser;
@@ -38,9 +43,12 @@
 import org.xmlpull.v1.XmlSerializer;
 
 import java.io.BufferedReader;
+import java.io.BufferedWriter;
 import java.io.File;
+import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.FileReader;
+import java.io.FileWriter;
 import java.io.IOException;
 import java.io.StringWriter;
 import java.util.ArrayList;
@@ -71,6 +79,7 @@
     private static final String TASKS_DIRNAME = "recent_tasks";
     private static final String TASK_EXTENSION = ".xml";
     private static final String IMAGES_DIRNAME = "recent_images";
+    private static final String PERSISTED_TASK_IDS_FILENAME = "persisted_taskIds.txt";
     static final String IMAGE_EXTENSION = ".png";
 
     private static final String TAG_TASK = "task";
@@ -78,6 +87,7 @@
     private final ActivityManagerService mService;
     private final ActivityStackSupervisor mStackSupervisor;
     private final RecentTasks mRecentTasks;
+    private final SparseArray<SparseBooleanArray> mTaskIdsInFile = new SparseArray<>();
 
     /**
      * Value determines write delay mode as follows: < 0 We are Flushing. No delays between writes
@@ -170,6 +180,64 @@
         }
     }
 
+    @NonNull
+    SparseBooleanArray loadPersistedTaskIdsForUser(int userId) {
+        if (mTaskIdsInFile.get(userId) != null) {
+            return mTaskIdsInFile.get(userId).clone();
+        }
+        final SparseBooleanArray persistedTaskIds = new SparseBooleanArray();
+        BufferedReader reader = null;
+        String line;
+        try {
+            reader = new BufferedReader(new FileReader(getUserPersistedTaskIdsFile(userId)));
+            while ((line = reader.readLine()) != null) {
+                for (String taskIdString : line.split("\\s+")) {
+                    int id = Integer.parseInt(taskIdString);
+                    persistedTaskIds.put(id, true);
+                }
+            }
+        } catch (FileNotFoundException e) {
+            // File doesn't exist. Ignore.
+        } catch (Exception e) {
+            Slog.e(TAG, "Error while reading taskIds file for user " + userId, e);
+        } finally {
+            IoUtils.closeQuietly(reader);
+        }
+        mTaskIdsInFile.put(userId, persistedTaskIds);
+        return persistedTaskIds.clone();
+    }
+
+    private void maybeWritePersistedTaskIdsForUser(@NonNull SparseBooleanArray taskIds,
+            int userId) {
+        if (userId < 0) {
+            return;
+        }
+        SparseBooleanArray persistedIdsInFile = mTaskIdsInFile.get(userId);
+        if (persistedIdsInFile != null && persistedIdsInFile.equals(taskIds)) {
+            return;
+        }
+        final File persistedTaskIdsFile = getUserPersistedTaskIdsFile(userId);
+        BufferedWriter writer = null;
+        try {
+            writer = new BufferedWriter(new FileWriter(persistedTaskIdsFile));
+            for (int i = 0; i < taskIds.size(); i++) {
+                if (taskIds.valueAt(i)) {
+                    writer.write(String.valueOf(taskIds.keyAt(i)));
+                    writer.newLine();
+                }
+            }
+        } catch (Exception e) {
+            Slog.e(TAG, "Error while writing taskIds file for user " + userId, e);
+        } finally {
+            IoUtils.closeQuietly(writer);
+        }
+        mTaskIdsInFile.put(userId, taskIds.clone());
+    }
+
+    void unloadUserDataFromMemory(int userId) {
+        mTaskIdsInFile.delete(userId);
+    }
+
     void wakeup(TaskRecord task, boolean flush) {
         synchronized (this) {
             if (task != null) {
@@ -336,14 +404,16 @@
 
         File[] recentFiles = userTasksDir.listFiles();
         if (recentFiles == null) {
-            Slog.e(TAG, "restoreTasksForUser: Unable to list files from " + userTasksDir);
+            Slog.e(TAG, "restoreTasksForUserLocked: Unable to list files from " + userTasksDir);
             return tasks;
         }
 
         for (int taskNdx = 0; taskNdx < recentFiles.length; ++taskNdx) {
             File taskFile = recentFiles[taskNdx];
-            if (DEBUG) Slog.d(TAG, "restoreTasksForUser: userId=" + userId
-                    + ", taskFile=" + taskFile.getName());
+            if (DEBUG) {
+                Slog.d(TAG, "restoreTasksForUserLocked: userId=" + userId
+                        + ", taskFile=" + taskFile.getName());
+            }
             BufferedReader reader = null;
             boolean deleteFile = false;
             try {
@@ -366,20 +436,29 @@
                                 // out the stuff we just read, if we don't write it we will
                                 // read the same thing again.
                                 // mWriteQueue.add(new TaskWriteQueueItem(task));
+
                                 final int taskId = task.taskId;
-                                mStackSupervisor.setNextTaskIdForUserLocked(taskId, userId);
-                                // Check if it's a valid user id. Don't add tasks for removed users.
-                                if (userId == task.userId) {
+                                if (mStackSupervisor.anyTaskForIdLocked(taskId,
+                                        /* restoreFromRecents= */ false, 0) != null) {
+                                    // Should not happen.
+                                    Slog.wtf(TAG, "Existing task with taskId " + taskId + "found");
+                                } else if (userId != task.userId) {
+                                    // Should not happen.
+                                    Slog.wtf(TAG, "Task with userId " + task.userId + " found in "
+                                            + userTasksDir.getAbsolutePath());
+                                } else {
+                                    // Looks fine.
+                                    mStackSupervisor.setNextTaskIdForUserLocked(taskId, userId);
                                     task.isPersistable = true;
                                     tasks.add(task);
                                     recoveredTaskIds.add(taskId);
                                 }
                             } else {
-                                Slog.e(TAG, "restoreTasksForUser: Unable to restore taskFile="
+                                Slog.e(TAG, "restoreTasksForUserLocked: Unable to restore taskFile="
                                         + taskFile + ": " + fileToString(taskFile));
                             }
                         } else {
-                            Slog.wtf(TAG, "restoreTasksForUser: Unknown xml event=" + event
+                            Slog.wtf(TAG, "restoreTasksForUserLocked: Unknown xml event=" + event
                                     + " name=" + name);
                         }
                     }
@@ -454,6 +533,20 @@
         }
     }
 
+    private void writeTaskIdsFiles() {
+        int candidateUserIds[];
+        synchronized (mService) {
+            candidateUserIds = mRecentTasks.usersWithRecentsLoadedLocked();
+        }
+        SparseBooleanArray taskIdsToSave;
+        for (int userId : candidateUserIds) {
+            synchronized (mService) {
+                taskIdsToSave = mRecentTasks.mPersistedTaskIds.get(userId).clone();
+            }
+            maybeWritePersistedTaskIdsForUser(taskIdsToSave, userId);
+        }
+    }
+
     private void removeObsoleteFiles(ArraySet<Integer> persistentTaskIds) {
         int[] candidateUserIds;
         synchronized (mService) {
@@ -472,8 +565,12 @@
         return BitmapFactory.decodeFile(filename);
     }
 
+    static File getUserPersistedTaskIdsFile(int userId) {
+        return new File(Environment.getDataSystemDeDirectory(userId), PERSISTED_TASK_IDS_FILENAME);
+    }
+
     static File getUserTasksDir(int userId) {
-        File userTasksDir = new File(Environment.getUserSystemDirectory(userId), TASKS_DIRNAME);
+        File userTasksDir = new File(Environment.getDataSystemCeDirectory(userId), TASKS_DIRNAME);
 
         if (!userTasksDir.exists()) {
             if (!userTasksDir.mkdir()) {
@@ -485,7 +582,7 @@
     }
 
     static File getUserImagesDir(int userId) {
-        File userImagesDir = new File(Environment.getUserSystemDirectory(userId), IMAGES_DIRNAME);
+        File userImagesDir = new File(Environment.getDataSystemCeDirectory(userId), IMAGES_DIRNAME);
 
         if (!userImagesDir.exists()) {
             if (!userImagesDir.mkdir()) {
@@ -535,6 +632,7 @@
                     }
                     removeObsoleteFiles(persistentTaskIds);
                 }
+                writeTaskIdsFiles();
 
                 // If mNextWriteTime, then don't delay between each call to saveToXml().
                 final WriteQueueItem item;
diff --git a/services/core/java/com/android/server/tv/TvInputHardwareManager.java b/services/core/java/com/android/server/tv/TvInputHardwareManager.java
index 4e96d71..bf281d6 100644
--- a/services/core/java/com/android/server/tv/TvInputHardwareManager.java
+++ b/services/core/java/com/android/server/tv/TvInputHardwareManager.java
@@ -24,6 +24,7 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.content.pm.PackageManager;
 import android.hardware.hdmi.HdmiControlManager;
 import android.hardware.hdmi.HdmiDeviceInfo;
 import android.hardware.hdmi.HdmiHotplugEvent;
@@ -45,6 +46,7 @@
 import android.media.tv.TvInputHardwareInfo;
 import android.media.tv.TvInputInfo;
 import android.media.tv.TvStreamConfig;
+import android.os.Binder;
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.Message;
@@ -57,9 +59,13 @@
 import android.view.KeyEvent;
 import android.view.Surface;
 
+import com.android.internal.util.IndentingPrintWriter;
 import com.android.server.SystemService;
 
+import java.io.FileDescriptor;
+import java.io.PrintWriter;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.Iterator;
 import java.util.LinkedList;
@@ -549,6 +555,70 @@
         return (float) mCurrentIndex / (float) mCurrentMaxIndex;
     }
 
+    public void dump(FileDescriptor fd, final PrintWriter writer, String[] args) {
+        final IndentingPrintWriter pw = new IndentingPrintWriter(writer, "  ");
+        if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP)
+                != PackageManager.PERMISSION_GRANTED) {
+            pw.println("Permission Denial: can't dump TvInputHardwareManager from pid="
+                    + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid());
+            return;
+        }
+
+        synchronized (mLock) {
+            pw.println("TvInputHardwareManager Info:");
+            pw.increaseIndent();
+            pw.println("mConnections: deviceId -> Connection");
+            pw.increaseIndent();
+            for (int i = 0; i < mConnections.size(); i++) {
+                int deviceId = mConnections.keyAt(i);
+                Connection mConnection = mConnections.valueAt(i);
+                pw.println(deviceId + ": " + mConnection);
+
+            }
+            pw.decreaseIndent();
+
+            pw.println("mHardwareList:");
+            pw.increaseIndent();
+            for (TvInputHardwareInfo tvInputHardwareInfo : mHardwareList) {
+                pw.println(tvInputHardwareInfo);
+            }
+            pw.decreaseIndent();
+
+            pw.println("mHdmiDeviceList:");
+            pw.increaseIndent();
+            for (HdmiDeviceInfo hdmiDeviceInfo : mHdmiDeviceList) {
+                pw.println(hdmiDeviceInfo);
+            }
+            pw.decreaseIndent();
+
+            pw.println("mHardwareInputIdMap: deviceId -> inputId");
+            pw.increaseIndent();
+            for (int i = 0 ; i < mHardwareInputIdMap.size(); i++) {
+                int deviceId = mHardwareInputIdMap.keyAt(i);
+                String inputId = mHardwareInputIdMap.valueAt(i);
+                pw.println(deviceId + ": " + inputId);
+            }
+            pw.decreaseIndent();
+
+            pw.println("mHdmiInputIdMap: id -> inputId");
+            pw.increaseIndent();
+            for (int i = 0; i < mHdmiInputIdMap.size(); i++) {
+                int id = mHdmiInputIdMap.keyAt(i);
+                String inputId = mHdmiInputIdMap.valueAt(i);
+                pw.println(id + ": " + inputId);
+            }
+            pw.decreaseIndent();
+
+            pw.println("mInputMap: inputId -> inputInfo");
+            pw.increaseIndent();
+            for(Map.Entry<String, TvInputInfo> entry : mInputMap.entrySet()) {
+                pw.println(entry.getKey() + ": " + entry.getValue());
+            }
+            pw.decreaseIndent();
+            pw.decreaseIndent();
+        }
+    }
+
     private class Connection implements IBinder.DeathRecipient {
         private final TvInputHardwareInfo mHardwareInfo;
         private TvInputInfo mInfo;
@@ -641,6 +711,17 @@
                 resetLocked(null, null, null, null, null);
             }
         }
+
+        public String toString() {
+            return "Connection{"
+                    + " mHardwareInfo: " + mHardwareInfo
+                    + ", mInfo: " + mInfo
+                    + ", mCallback: " + mCallback
+                    + ", mConfigs: " + Arrays.toString(mConfigs)
+                    + ", mCallingUid: " + mCallingUid
+                    + ", mResolvedUserId: " + mResolvedUserId
+                    + " }";
+        }
     }
 
     private class TvInputHardwareImpl extends ITvInputHardware.Stub {
diff --git a/services/core/java/com/android/server/tv/TvInputManagerService.java b/services/core/java/com/android/server/tv/TvInputManagerService.java
index 628c627..8a2729e 100644
--- a/services/core/java/com/android/server/tv/TvInputManagerService.java
+++ b/services/core/java/com/android/server/tv/TvInputManagerService.java
@@ -1923,6 +1923,7 @@
                     pw.decreaseIndent();
                 }
             }
+            mTvInputHardwareManager.dump(fd, writer, args);
         }
     }