Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server.am; |
| 18 | |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 19 | import android.annotation.NonNull; |
| 20 | import android.annotation.Nullable; |
| 21 | import android.app.ActivityManager; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 22 | import android.graphics.Bitmap; |
| 23 | import android.graphics.BitmapFactory; |
| 24 | import android.os.Debug; |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 25 | import android.os.Environment; |
| 26 | import android.os.FileUtils; |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 27 | import android.os.Process; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 28 | import android.os.SystemClock; |
| 29 | import android.util.ArraySet; |
| 30 | import android.util.AtomicFile; |
| 31 | import android.util.Slog; |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 32 | import android.util.SparseArray; |
| 33 | import android.util.SparseBooleanArray; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 34 | import android.util.Xml; |
Wale Ogunwale | 18795a2 | 2014-12-03 11:38:33 -0800 | [diff] [blame] | 35 | |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 36 | import com.android.internal.annotations.VisibleForTesting; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 37 | import com.android.internal.util.FastXmlSerializer; |
| 38 | import com.android.internal.util.XmlUtils; |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 39 | import libcore.io.IoUtils; |
| 40 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 41 | import org.xmlpull.v1.XmlPullParser; |
| 42 | import org.xmlpull.v1.XmlPullParserException; |
| 43 | import org.xmlpull.v1.XmlSerializer; |
| 44 | |
| 45 | import java.io.BufferedReader; |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 46 | import java.io.BufferedWriter; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 47 | import java.io.File; |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 48 | import java.io.FileNotFoundException; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 49 | import java.io.FileOutputStream; |
| 50 | import java.io.FileReader; |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 51 | import java.io.FileWriter; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 52 | import java.io.IOException; |
| 53 | import java.io.StringWriter; |
| 54 | import java.util.ArrayList; |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 55 | import java.util.Collections; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 56 | import java.util.Comparator; |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 57 | import java.util.List; |
Wale Ogunwale | 18795a2 | 2014-12-03 11:38:33 -0800 | [diff] [blame] | 58 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 59 | public class TaskPersister { |
| 60 | static final String TAG = "TaskPersister"; |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 61 | static final boolean DEBUG = false; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 62 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 63 | /** When not flushing don't write out files faster than this */ |
| 64 | private static final long INTER_WRITE_DELAY_MS = 500; |
| 65 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 66 | /** |
| 67 | * When not flushing delay this long before writing the first file out. This gives the next task |
| 68 | * being launched a chance to load its resources without this occupying IO bandwidth. |
| 69 | */ |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 70 | private static final long PRE_TASK_DELAY_MS = 3000; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 71 | |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 72 | /** The maximum number of entries to keep in the queue before draining it automatically. */ |
| 73 | private static final int MAX_WRITE_QUEUE_LENGTH = 6; |
| 74 | |
| 75 | /** Special value for mWriteTime to mean don't wait, just write */ |
| 76 | private static final long FLUSH_QUEUE = -1; |
| 77 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 78 | private static final String RECENTS_FILENAME = "_task"; |
| 79 | private static final String TASKS_DIRNAME = "recent_tasks"; |
| 80 | private static final String TASK_EXTENSION = ".xml"; |
| 81 | private static final String IMAGES_DIRNAME = "recent_images"; |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 82 | private static final String PERSISTED_TASK_IDS_FILENAME = "persisted_taskIds.txt"; |
Craig Mautner | c0ffce5 | 2014-07-01 12:38:52 -0700 | [diff] [blame] | 83 | static final String IMAGE_EXTENSION = ".png"; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 84 | |
| 85 | private static final String TAG_TASK = "task"; |
| 86 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 87 | private final ActivityManagerService mService; |
| 88 | private final ActivityStackSupervisor mStackSupervisor; |
Wale Ogunwale | c82f2f5 | 2014-12-09 09:32:50 -0800 | [diff] [blame] | 89 | private final RecentTasks mRecentTasks; |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 90 | private final SparseArray<SparseBooleanArray> mTaskIdsInFile = new SparseArray<>(); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 91 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 92 | /** |
| 93 | * Value determines write delay mode as follows: < 0 We are Flushing. No delays between writes |
| 94 | * until the image queue is drained and all tasks needing persisting are written to disk. There |
| 95 | * is no delay between writes. == 0 We are Idle. Next writes will be delayed by |
| 96 | * #PRE_TASK_DELAY_MS. > 0 We are Actively writing. Next write will be at this time. Subsequent |
| 97 | * writes will be delayed by #INTER_WRITE_DELAY_MS. |
| 98 | */ |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 99 | private long mNextWriteTime = 0; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 100 | |
| 101 | private final LazyTaskWriterThread mLazyTaskWriterThread; |
| 102 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 103 | private static class WriteQueueItem {} |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 104 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 105 | private static class TaskWriteQueueItem extends WriteQueueItem { |
| 106 | final TaskRecord mTask; |
Winson | c809cbb | 2015-11-02 12:06:15 -0800 | [diff] [blame] | 107 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 108 | TaskWriteQueueItem(TaskRecord task) { |
| 109 | mTask = task; |
| 110 | } |
| 111 | } |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 112 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 113 | private static class ImageWriteQueueItem extends WriteQueueItem { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 114 | final String mFilePath; |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 115 | Bitmap mImage; |
Winson | c809cbb | 2015-11-02 12:06:15 -0800 | [diff] [blame] | 116 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 117 | ImageWriteQueueItem(String filePath, Bitmap image) { |
| 118 | mFilePath = filePath; |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 119 | mImage = image; |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | ArrayList<WriteQueueItem> mWriteQueue = new ArrayList<WriteQueueItem>(); |
| 124 | |
Wale Ogunwale | c82f2f5 | 2014-12-09 09:32:50 -0800 | [diff] [blame] | 125 | TaskPersister(File systemDir, ActivityStackSupervisor stackSupervisor, |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 126 | ActivityManagerService service, RecentTasks recentTasks) { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 127 | |
| 128 | final File legacyImagesDir = new File(systemDir, IMAGES_DIRNAME); |
| 129 | if (legacyImagesDir.exists()) { |
| 130 | if (!FileUtils.deleteContents(legacyImagesDir) || !legacyImagesDir.delete()) { |
| 131 | Slog.i(TAG, "Failure deleting legacy images directory: " + legacyImagesDir); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 132 | } |
| 133 | } |
| 134 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 135 | final File legacyTasksDir = new File(systemDir, TASKS_DIRNAME); |
| 136 | if (legacyTasksDir.exists()) { |
| 137 | if (!FileUtils.deleteContents(legacyTasksDir) || !legacyTasksDir.delete()) { |
| 138 | Slog.i(TAG, "Failure deleting legacy tasks directory: " + legacyTasksDir); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 139 | } |
| 140 | } |
| 141 | |
| 142 | mStackSupervisor = stackSupervisor; |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 143 | mService = service; |
Wale Ogunwale | c82f2f5 | 2014-12-09 09:32:50 -0800 | [diff] [blame] | 144 | mRecentTasks = recentTasks; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 145 | mLazyTaskWriterThread = new LazyTaskWriterThread("LazyTaskWriterThread"); |
| 146 | } |
| 147 | |
| 148 | void startPersisting() { |
Wale Ogunwale | c82f2f5 | 2014-12-09 09:32:50 -0800 | [diff] [blame] | 149 | if (!mLazyTaskWriterThread.isAlive()) { |
| 150 | mLazyTaskWriterThread.start(); |
| 151 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 152 | } |
| 153 | |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 154 | private void removeThumbnails(TaskRecord task) { |
| 155 | final String taskString = Integer.toString(task.taskId); |
| 156 | for (int queueNdx = mWriteQueue.size() - 1; queueNdx >= 0; --queueNdx) { |
| 157 | final WriteQueueItem item = mWriteQueue.get(queueNdx); |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 158 | if (item instanceof ImageWriteQueueItem) { |
| 159 | final File thumbnailFile = new File(((ImageWriteQueueItem) item).mFilePath); |
| 160 | if (thumbnailFile.getName().startsWith(taskString)) { |
| 161 | if (DEBUG) { |
| 162 | Slog.d(TAG, "Removing " + ((ImageWriteQueueItem) item).mFilePath + |
| 163 | " from write queue"); |
| 164 | } |
| 165 | mWriteQueue.remove(queueNdx); |
| 166 | } |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 167 | } |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | private void yieldIfQueueTooDeep() { |
| 172 | boolean stall = false; |
| 173 | synchronized (this) { |
| 174 | if (mNextWriteTime == FLUSH_QUEUE) { |
| 175 | stall = true; |
| 176 | } |
| 177 | } |
| 178 | if (stall) { |
| 179 | Thread.yield(); |
| 180 | } |
| 181 | } |
| 182 | |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 183 | @NonNull |
| 184 | SparseBooleanArray loadPersistedTaskIdsForUser(int userId) { |
| 185 | if (mTaskIdsInFile.get(userId) != null) { |
| 186 | return mTaskIdsInFile.get(userId).clone(); |
| 187 | } |
| 188 | final SparseBooleanArray persistedTaskIds = new SparseBooleanArray(); |
| 189 | BufferedReader reader = null; |
| 190 | String line; |
| 191 | try { |
| 192 | reader = new BufferedReader(new FileReader(getUserPersistedTaskIdsFile(userId))); |
| 193 | while ((line = reader.readLine()) != null) { |
| 194 | for (String taskIdString : line.split("\\s+")) { |
| 195 | int id = Integer.parseInt(taskIdString); |
| 196 | persistedTaskIds.put(id, true); |
| 197 | } |
| 198 | } |
| 199 | } catch (FileNotFoundException e) { |
| 200 | // File doesn't exist. Ignore. |
| 201 | } catch (Exception e) { |
| 202 | Slog.e(TAG, "Error while reading taskIds file for user " + userId, e); |
| 203 | } finally { |
| 204 | IoUtils.closeQuietly(reader); |
| 205 | } |
| 206 | mTaskIdsInFile.put(userId, persistedTaskIds); |
| 207 | return persistedTaskIds.clone(); |
| 208 | } |
| 209 | |
| 210 | private void maybeWritePersistedTaskIdsForUser(@NonNull SparseBooleanArray taskIds, |
| 211 | int userId) { |
| 212 | if (userId < 0) { |
| 213 | return; |
| 214 | } |
| 215 | SparseBooleanArray persistedIdsInFile = mTaskIdsInFile.get(userId); |
| 216 | if (persistedIdsInFile != null && persistedIdsInFile.equals(taskIds)) { |
| 217 | return; |
| 218 | } |
| 219 | final File persistedTaskIdsFile = getUserPersistedTaskIdsFile(userId); |
| 220 | BufferedWriter writer = null; |
| 221 | try { |
| 222 | writer = new BufferedWriter(new FileWriter(persistedTaskIdsFile)); |
| 223 | for (int i = 0; i < taskIds.size(); i++) { |
| 224 | if (taskIds.valueAt(i)) { |
| 225 | writer.write(String.valueOf(taskIds.keyAt(i))); |
| 226 | writer.newLine(); |
| 227 | } |
| 228 | } |
| 229 | } catch (Exception e) { |
| 230 | Slog.e(TAG, "Error while writing taskIds file for user " + userId, e); |
| 231 | } finally { |
| 232 | IoUtils.closeQuietly(writer); |
| 233 | } |
| 234 | mTaskIdsInFile.put(userId, taskIds.clone()); |
| 235 | } |
| 236 | |
| 237 | void unloadUserDataFromMemory(int userId) { |
| 238 | mTaskIdsInFile.delete(userId); |
| 239 | } |
| 240 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 241 | void wakeup(TaskRecord task, boolean flush) { |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 242 | synchronized (this) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 243 | if (task != null) { |
| 244 | int queueNdx; |
| 245 | for (queueNdx = mWriteQueue.size() - 1; queueNdx >= 0; --queueNdx) { |
| 246 | final WriteQueueItem item = mWriteQueue.get(queueNdx); |
| 247 | if (item instanceof TaskWriteQueueItem && |
| 248 | ((TaskWriteQueueItem) item).mTask == task) { |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 249 | if (!task.inRecents) { |
| 250 | // This task is being removed. |
| 251 | removeThumbnails(task); |
| 252 | } |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 253 | break; |
| 254 | } |
| 255 | } |
Wale Ogunwale | be23ff4 | 2014-10-21 16:29:51 -0700 | [diff] [blame] | 256 | if (queueNdx < 0 && task.isPersistable) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 257 | mWriteQueue.add(new TaskWriteQueueItem(task)); |
| 258 | } |
| 259 | } else { |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 260 | // Dummy. Ensures removeObsoleteFiles is called when LazyTaskThreadWriter is |
| 261 | // notified. |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 262 | mWriteQueue.add(new WriteQueueItem()); |
| 263 | } |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 264 | if (flush || mWriteQueue.size() > MAX_WRITE_QUEUE_LENGTH) { |
| 265 | mNextWriteTime = FLUSH_QUEUE; |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 266 | } else if (mNextWriteTime == 0) { |
| 267 | mNextWriteTime = SystemClock.uptimeMillis() + PRE_TASK_DELAY_MS; |
| 268 | } |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 269 | if (DEBUG) Slog.d(TAG, "wakeup: task=" + task + " flush=" + flush + " mNextWriteTime=" |
| 270 | + mNextWriteTime + " mWriteQueue.size=" + mWriteQueue.size() |
| 271 | + " Callers=" + Debug.getCallers(4)); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 272 | notifyAll(); |
| 273 | } |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 274 | |
| 275 | yieldIfQueueTooDeep(); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 276 | } |
| 277 | |
Dianne Hackborn | ce0fd76 | 2014-09-19 12:58:15 -0700 | [diff] [blame] | 278 | void flush() { |
| 279 | synchronized (this) { |
| 280 | mNextWriteTime = FLUSH_QUEUE; |
| 281 | notifyAll(); |
| 282 | do { |
| 283 | try { |
| 284 | wait(); |
| 285 | } catch (InterruptedException e) { |
| 286 | } |
| 287 | } while (mNextWriteTime == FLUSH_QUEUE); |
| 288 | } |
| 289 | } |
| 290 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 291 | void saveImage(Bitmap image, String filePath) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 292 | synchronized (this) { |
| 293 | int queueNdx; |
| 294 | for (queueNdx = mWriteQueue.size() - 1; queueNdx >= 0; --queueNdx) { |
| 295 | final WriteQueueItem item = mWriteQueue.get(queueNdx); |
| 296 | if (item instanceof ImageWriteQueueItem) { |
| 297 | ImageWriteQueueItem imageWriteQueueItem = (ImageWriteQueueItem) item; |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 298 | if (imageWriteQueueItem.mFilePath.equals(filePath)) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 299 | // replace the Bitmap with the new one. |
| 300 | imageWriteQueueItem.mImage = image; |
| 301 | break; |
| 302 | } |
| 303 | } |
| 304 | } |
| 305 | if (queueNdx < 0) { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 306 | mWriteQueue.add(new ImageWriteQueueItem(filePath, image)); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 307 | } |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 308 | if (mWriteQueue.size() > MAX_WRITE_QUEUE_LENGTH) { |
| 309 | mNextWriteTime = FLUSH_QUEUE; |
| 310 | } else if (mNextWriteTime == 0) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 311 | mNextWriteTime = SystemClock.uptimeMillis() + PRE_TASK_DELAY_MS; |
| 312 | } |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 313 | if (DEBUG) Slog.d(TAG, "saveImage: filePath=" + filePath + " now=" + |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 314 | SystemClock.uptimeMillis() + " mNextWriteTime=" + |
| 315 | mNextWriteTime + " Callers=" + Debug.getCallers(4)); |
| 316 | notifyAll(); |
| 317 | } |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 318 | |
| 319 | yieldIfQueueTooDeep(); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 320 | } |
| 321 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 322 | Bitmap getTaskDescriptionIcon(String filePath) { |
Craig Mautner | 648f69b | 2014-09-18 14:16:26 -0700 | [diff] [blame] | 323 | // See if it is in the write queue |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 324 | final Bitmap icon = getImageFromWriteQueue(filePath); |
Craig Mautner | 648f69b | 2014-09-18 14:16:26 -0700 | [diff] [blame] | 325 | if (icon != null) { |
| 326 | return icon; |
| 327 | } |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 328 | return restoreImage(filePath); |
Craig Mautner | 648f69b | 2014-09-18 14:16:26 -0700 | [diff] [blame] | 329 | } |
| 330 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 331 | Bitmap getImageFromWriteQueue(String filePath) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 332 | synchronized (this) { |
| 333 | for (int queueNdx = mWriteQueue.size() - 1; queueNdx >= 0; --queueNdx) { |
| 334 | final WriteQueueItem item = mWriteQueue.get(queueNdx); |
| 335 | if (item instanceof ImageWriteQueueItem) { |
| 336 | ImageWriteQueueItem imageWriteQueueItem = (ImageWriteQueueItem) item; |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 337 | if (imageWriteQueueItem.mFilePath.equals(filePath)) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 338 | return imageWriteQueueItem.mImage; |
| 339 | } |
| 340 | } |
| 341 | } |
| 342 | return null; |
| 343 | } |
| 344 | } |
| 345 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 346 | private StringWriter saveToXml(TaskRecord task) throws IOException, XmlPullParserException { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 347 | if (DEBUG) Slog.d(TAG, "saveToXml: task=" + task); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 348 | final XmlSerializer xmlSerializer = new FastXmlSerializer(); |
| 349 | StringWriter stringWriter = new StringWriter(); |
| 350 | xmlSerializer.setOutput(stringWriter); |
| 351 | |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 352 | if (DEBUG) xmlSerializer.setFeature( |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 353 | "http://xmlpull.org/v1/doc/features.html#indent-output", true); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 354 | |
| 355 | // save task |
| 356 | xmlSerializer.startDocument(null, true); |
| 357 | |
| 358 | xmlSerializer.startTag(null, TAG_TASK); |
| 359 | task.saveToXml(xmlSerializer); |
| 360 | xmlSerializer.endTag(null, TAG_TASK); |
| 361 | |
| 362 | xmlSerializer.endDocument(); |
| 363 | xmlSerializer.flush(); |
| 364 | |
| 365 | return stringWriter; |
| 366 | } |
| 367 | |
Craig Mautner | 77b0426 | 2014-06-27 15:22:12 -0700 | [diff] [blame] | 368 | private String fileToString(File file) { |
| 369 | final String newline = System.lineSeparator(); |
| 370 | try { |
| 371 | BufferedReader reader = new BufferedReader(new FileReader(file)); |
| 372 | StringBuffer sb = new StringBuffer((int) file.length() * 2); |
| 373 | String line; |
| 374 | while ((line = reader.readLine()) != null) { |
| 375 | sb.append(line + newline); |
| 376 | } |
| 377 | reader.close(); |
| 378 | return sb.toString(); |
| 379 | } catch (IOException ioe) { |
| 380 | Slog.e(TAG, "Couldn't read file " + file.getName()); |
| 381 | return null; |
| 382 | } |
| 383 | } |
| 384 | |
Craig Mautner | a228ae9 | 2014-07-09 05:44:55 -0700 | [diff] [blame] | 385 | private TaskRecord taskIdToTask(int taskId, ArrayList<TaskRecord> tasks) { |
| 386 | if (taskId < 0) { |
| 387 | return null; |
| 388 | } |
| 389 | for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) { |
| 390 | final TaskRecord task = tasks.get(taskNdx); |
| 391 | if (task.taskId == taskId) { |
| 392 | return task; |
| 393 | } |
| 394 | } |
| 395 | Slog.e(TAG, "Restore affiliation error looking for taskId=" + taskId); |
| 396 | return null; |
| 397 | } |
| 398 | |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 399 | List<TaskRecord> restoreTasksForUserLocked(final int userId) { |
| 400 | final ArrayList<TaskRecord> tasks = new ArrayList<TaskRecord>(); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 401 | ArraySet<Integer> recoveredTaskIds = new ArraySet<Integer>(); |
| 402 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 403 | File userTasksDir = getUserTasksDir(userId); |
| 404 | |
| 405 | File[] recentFiles = userTasksDir.listFiles(); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 406 | if (recentFiles == null) { |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 407 | Slog.e(TAG, "restoreTasksForUserLocked: Unable to list files from " + userTasksDir); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 408 | return tasks; |
| 409 | } |
| 410 | |
| 411 | for (int taskNdx = 0; taskNdx < recentFiles.length; ++taskNdx) { |
| 412 | File taskFile = recentFiles[taskNdx]; |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 413 | if (DEBUG) { |
| 414 | Slog.d(TAG, "restoreTasksForUserLocked: userId=" + userId |
| 415 | + ", taskFile=" + taskFile.getName()); |
| 416 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 417 | BufferedReader reader = null; |
Craig Mautner | e0129b3 | 2014-05-25 16:41:09 -0700 | [diff] [blame] | 418 | boolean deleteFile = false; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 419 | try { |
| 420 | reader = new BufferedReader(new FileReader(taskFile)); |
| 421 | final XmlPullParser in = Xml.newPullParser(); |
| 422 | in.setInput(reader); |
| 423 | |
| 424 | int event; |
| 425 | while (((event = in.next()) != XmlPullParser.END_DOCUMENT) && |
| 426 | event != XmlPullParser.END_TAG) { |
| 427 | final String name = in.getName(); |
| 428 | if (event == XmlPullParser.START_TAG) { |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 429 | if (DEBUG) Slog.d(TAG, "restoreTasksForUserLocked: START_TAG name=" + name); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 430 | if (TAG_TASK.equals(name)) { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 431 | final TaskRecord task = TaskRecord.restoreFromXml(in, mStackSupervisor); |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 432 | if (DEBUG) Slog.d(TAG, "restoreTasksForUserLocked: restored task=" |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 433 | + task); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 434 | if (task != null) { |
Dianne Hackborn | 852975d | 2014-08-22 17:42:43 -0700 | [diff] [blame] | 435 | // XXX Don't add to write queue... there is no reason to write |
| 436 | // out the stuff we just read, if we don't write it we will |
| 437 | // read the same thing again. |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 438 | // mWriteQueue.add(new TaskWriteQueueItem(task)); |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 439 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 440 | final int taskId = task.taskId; |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 441 | if (mStackSupervisor.anyTaskForIdLocked(taskId, |
| 442 | /* restoreFromRecents= */ false, 0) != null) { |
| 443 | // Should not happen. |
| 444 | Slog.wtf(TAG, "Existing task with taskId " + taskId + "found"); |
| 445 | } else if (userId != task.userId) { |
| 446 | // Should not happen. |
| 447 | Slog.wtf(TAG, "Task with userId " + task.userId + " found in " |
| 448 | + userTasksDir.getAbsolutePath()); |
| 449 | } else { |
| 450 | // Looks fine. |
| 451 | mStackSupervisor.setNextTaskIdForUserLocked(taskId, userId); |
Amith Yamasani | 515d406 | 2015-09-28 11:30:06 -0700 | [diff] [blame] | 452 | task.isPersistable = true; |
| 453 | tasks.add(task); |
| 454 | recoveredTaskIds.add(taskId); |
| 455 | } |
Craig Mautner | 77b0426 | 2014-06-27 15:22:12 -0700 | [diff] [blame] | 456 | } else { |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 457 | Slog.e(TAG, "restoreTasksForUserLocked: Unable to restore taskFile=" |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 458 | + taskFile + ": " + fileToString(taskFile)); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 459 | } |
| 460 | } else { |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 461 | Slog.wtf(TAG, "restoreTasksForUserLocked: Unknown xml event=" + event |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 462 | + " name=" + name); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 463 | } |
| 464 | } |
| 465 | XmlUtils.skipCurrentTag(in); |
| 466 | } |
Craig Mautner | e0129b3 | 2014-05-25 16:41:09 -0700 | [diff] [blame] | 467 | } catch (Exception e) { |
Craig Mautner | a228ae9 | 2014-07-09 05:44:55 -0700 | [diff] [blame] | 468 | Slog.wtf(TAG, "Unable to parse " + taskFile + ". Error ", e); |
Craig Mautner | 77b0426 | 2014-06-27 15:22:12 -0700 | [diff] [blame] | 469 | Slog.e(TAG, "Failing file: " + fileToString(taskFile)); |
Craig Mautner | e0129b3 | 2014-05-25 16:41:09 -0700 | [diff] [blame] | 470 | deleteFile = true; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 471 | } finally { |
Wale Ogunwale | 18795a2 | 2014-12-03 11:38:33 -0800 | [diff] [blame] | 472 | IoUtils.closeQuietly(reader); |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 473 | if (deleteFile) { |
| 474 | if (DEBUG) Slog.d(TAG, "Deleting file=" + taskFile.getName()); |
Craig Mautner | e0129b3 | 2014-05-25 16:41:09 -0700 | [diff] [blame] | 475 | taskFile.delete(); |
| 476 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 477 | } |
| 478 | } |
| 479 | |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 480 | if (!DEBUG) { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 481 | removeObsoleteFiles(recoveredTaskIds, userTasksDir.listFiles()); |
| 482 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 483 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 484 | // Fix up task affiliation from taskIds |
Craig Mautner | a228ae9 | 2014-07-09 05:44:55 -0700 | [diff] [blame] | 485 | for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) { |
| 486 | final TaskRecord task = tasks.get(taskNdx); |
| 487 | task.setPrevAffiliate(taskIdToTask(task.mPrevAffiliateTaskId, tasks)); |
| 488 | task.setNextAffiliate(taskIdToTask(task.mNextAffiliateTaskId, tasks)); |
| 489 | } |
| 490 | |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 491 | Collections.sort(tasks, new Comparator<TaskRecord>() { |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 492 | @Override |
| 493 | public int compare(TaskRecord lhs, TaskRecord rhs) { |
Craig Mautner | 43e52ed | 2014-06-16 17:18:52 -0700 | [diff] [blame] | 494 | final long diff = rhs.mLastTimeMoved - lhs.mLastTimeMoved; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 495 | if (diff < 0) { |
| 496 | return -1; |
| 497 | } else if (diff > 0) { |
| 498 | return +1; |
| 499 | } else { |
| 500 | return 0; |
| 501 | } |
| 502 | } |
| 503 | }); |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 504 | return tasks; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 505 | } |
| 506 | |
Craig Mautner | e0129b3 | 2014-05-25 16:41:09 -0700 | [diff] [blame] | 507 | private static void removeObsoleteFiles(ArraySet<Integer> persistentTaskIds, File[] files) { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 508 | if (DEBUG) Slog.d(TAG, "removeObsoleteFiles: persistentTaskIds=" + persistentTaskIds + |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 509 | " files=" + files); |
Craig Mautner | a5badf0 | 2014-09-11 12:47:03 -0700 | [diff] [blame] | 510 | if (files == null) { |
| 511 | Slog.e(TAG, "File error accessing recents directory (too many files open?)."); |
| 512 | return; |
| 513 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 514 | for (int fileNdx = 0; fileNdx < files.length; ++fileNdx) { |
| 515 | File file = files[fileNdx]; |
| 516 | String filename = file.getName(); |
Craig Mautner | ffcfcaa | 2014-06-05 09:54:38 -0700 | [diff] [blame] | 517 | final int taskIdEnd = filename.indexOf('_'); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 518 | if (taskIdEnd > 0) { |
| 519 | final int taskId; |
| 520 | try { |
| 521 | taskId = Integer.valueOf(filename.substring(0, taskIdEnd)); |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 522 | if (DEBUG) Slog.d(TAG, "removeObsoleteFiles: Found taskId=" + taskId); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 523 | } catch (Exception e) { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 524 | Slog.wtf(TAG, "removeObsoleteFiles: Can't parse file=" + file.getName()); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 525 | file.delete(); |
| 526 | continue; |
| 527 | } |
| 528 | if (!persistentTaskIds.contains(taskId)) { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 529 | if (DEBUG) Slog.d(TAG, "removeObsoleteFiles: deleting file=" + file.getName()); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 530 | file.delete(); |
| 531 | } |
| 532 | } |
| 533 | } |
| 534 | } |
| 535 | |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 536 | private void writeTaskIdsFiles() { |
| 537 | int candidateUserIds[]; |
| 538 | synchronized (mService) { |
| 539 | candidateUserIds = mRecentTasks.usersWithRecentsLoadedLocked(); |
| 540 | } |
| 541 | SparseBooleanArray taskIdsToSave; |
| 542 | for (int userId : candidateUserIds) { |
| 543 | synchronized (mService) { |
| 544 | taskIdsToSave = mRecentTasks.mPersistedTaskIds.get(userId).clone(); |
| 545 | } |
| 546 | maybeWritePersistedTaskIdsForUser(taskIdsToSave, userId); |
| 547 | } |
| 548 | } |
| 549 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 550 | private void removeObsoleteFiles(ArraySet<Integer> persistentTaskIds) { |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 551 | int[] candidateUserIds; |
| 552 | synchronized (mService) { |
| 553 | // Remove only from directories of the users who have recents in memory synchronized |
| 554 | // with persistent storage. |
| 555 | candidateUserIds = mRecentTasks.usersWithRecentsLoadedLocked(); |
| 556 | } |
| 557 | for (int userId : candidateUserIds) { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 558 | removeObsoleteFiles(persistentTaskIds, getUserImagesDir(userId).listFiles()); |
| 559 | removeObsoleteFiles(persistentTaskIds, getUserTasksDir(userId).listFiles()); |
| 560 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 561 | } |
| 562 | |
| 563 | static Bitmap restoreImage(String filename) { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 564 | if (DEBUG) Slog.d(TAG, "restoreImage: restoring " + filename); |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 565 | return BitmapFactory.decodeFile(filename); |
| 566 | } |
| 567 | |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 568 | static File getUserPersistedTaskIdsFile(int userId) { |
| 569 | return new File(Environment.getDataSystemDeDirectory(userId), PERSISTED_TASK_IDS_FILENAME); |
| 570 | } |
| 571 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 572 | static File getUserTasksDir(int userId) { |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 573 | File userTasksDir = new File(Environment.getDataSystemCeDirectory(userId), TASKS_DIRNAME); |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 574 | |
| 575 | if (!userTasksDir.exists()) { |
| 576 | if (!userTasksDir.mkdir()) { |
| 577 | Slog.e(TAG, "Failure creating tasks directory for user " + userId + ": " |
| 578 | + userTasksDir); |
| 579 | } |
| 580 | } |
| 581 | return userTasksDir; |
| 582 | } |
| 583 | |
| 584 | static File getUserImagesDir(int userId) { |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 585 | File userImagesDir = new File(Environment.getDataSystemCeDirectory(userId), IMAGES_DIRNAME); |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 586 | |
| 587 | if (!userImagesDir.exists()) { |
| 588 | if (!userImagesDir.mkdir()) { |
| 589 | Slog.e(TAG, "Failure creating images directory for user " + userId + ": " |
| 590 | + userImagesDir); |
| 591 | } |
| 592 | } |
| 593 | return userImagesDir; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 594 | } |
| 595 | |
| 596 | private class LazyTaskWriterThread extends Thread { |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 597 | |
| 598 | LazyTaskWriterThread(String name) { |
| 599 | super(name); |
| 600 | } |
| 601 | |
| 602 | @Override |
| 603 | public void run() { |
Riley Andrews | f16c2e8 | 2015-06-02 18:24:48 -0700 | [diff] [blame] | 604 | Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 605 | ArraySet<Integer> persistentTaskIds = new ArraySet<Integer>(); |
| 606 | while (true) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 607 | // We can't lock mService while holding TaskPersister.this, but we don't want to |
| 608 | // call removeObsoleteFiles every time through the loop, only the last time before |
| 609 | // going to sleep. The risk is that we call removeObsoleteFiles() successively. |
| 610 | final boolean probablyDone; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 611 | synchronized (TaskPersister.this) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 612 | probablyDone = mWriteQueue.isEmpty(); |
| 613 | } |
| 614 | if (probablyDone) { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 615 | if (DEBUG) Slog.d(TAG, "Looking for obsolete files."); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 616 | persistentTaskIds.clear(); |
| 617 | synchronized (mService) { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 618 | if (DEBUG) Slog.d(TAG, "mRecents=" + mRecentTasks); |
Wale Ogunwale | c82f2f5 | 2014-12-09 09:32:50 -0800 | [diff] [blame] | 619 | for (int taskNdx = mRecentTasks.size() - 1; taskNdx >= 0; --taskNdx) { |
| 620 | final TaskRecord task = mRecentTasks.get(taskNdx); |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 621 | if (DEBUG) Slog.d(TAG, "LazyTaskWriter: task=" + task + |
Wale Ogunwale | be23ff4 | 2014-10-21 16:29:51 -0700 | [diff] [blame] | 622 | " persistable=" + task.isPersistable); |
| 623 | if ((task.isPersistable || task.inRecents) |
Wale Ogunwale | 18795a2 | 2014-12-03 11:38:33 -0800 | [diff] [blame] | 624 | && (task.stack == null || !task.stack.isHomeStack())) { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 625 | if (DEBUG) Slog.d(TAG, "adding to persistentTaskIds task=" + task); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 626 | persistentTaskIds.add(task.taskId); |
| 627 | } else { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 628 | if (DEBUG) Slog.d(TAG, |
Wale Ogunwale | be23ff4 | 2014-10-21 16:29:51 -0700 | [diff] [blame] | 629 | "omitting from persistentTaskIds task=" + task); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 630 | } |
| 631 | } |
| 632 | } |
| 633 | removeObsoleteFiles(persistentTaskIds); |
| 634 | } |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame^] | 635 | writeTaskIdsFiles(); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 636 | |
| 637 | // If mNextWriteTime, then don't delay between each call to saveToXml(). |
| 638 | final WriteQueueItem item; |
| 639 | synchronized (TaskPersister.this) { |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 640 | if (mNextWriteTime != FLUSH_QUEUE) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 641 | // The next write we don't have to wait so long. |
| 642 | mNextWriteTime = SystemClock.uptimeMillis() + INTER_WRITE_DELAY_MS; |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 643 | if (DEBUG) Slog.d(TAG, "Next write time may be in " + |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 644 | INTER_WRITE_DELAY_MS + " msec. (" + mNextWriteTime + ")"); |
| 645 | } |
| 646 | |
| 647 | while (mWriteQueue.isEmpty()) { |
Dianne Hackborn | ce0fd76 | 2014-09-19 12:58:15 -0700 | [diff] [blame] | 648 | if (mNextWriteTime != 0) { |
| 649 | mNextWriteTime = 0; // idle. |
| 650 | TaskPersister.this.notifyAll(); // wake up flush() if needed. |
| 651 | } |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 652 | try { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 653 | if (DEBUG) Slog.d(TAG, "LazyTaskWriter: waiting indefinitely."); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 654 | TaskPersister.this.wait(); |
| 655 | } catch (InterruptedException e) { |
| 656 | } |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 657 | // Invariant: mNextWriteTime is either FLUSH_QUEUE or PRE_WRITE_DELAY_MS |
| 658 | // from now. |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 659 | } |
| 660 | item = mWriteQueue.remove(0); |
| 661 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 662 | long now = SystemClock.uptimeMillis(); |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 663 | if (DEBUG) Slog.d(TAG, "LazyTaskWriter: now=" + now + " mNextWriteTime=" + |
| 664 | mNextWriteTime + " mWriteQueue.size=" + mWriteQueue.size()); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 665 | while (now < mNextWriteTime) { |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 666 | try { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 667 | if (DEBUG) Slog.d(TAG, "LazyTaskWriter: waiting " + |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 668 | (mNextWriteTime - now)); |
| 669 | TaskPersister.this.wait(mNextWriteTime - now); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 670 | } catch (InterruptedException e) { |
| 671 | } |
| 672 | now = SystemClock.uptimeMillis(); |
| 673 | } |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 674 | |
| 675 | // Got something to do. |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 676 | } |
| 677 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 678 | if (item instanceof ImageWriteQueueItem) { |
| 679 | ImageWriteQueueItem imageWriteQueueItem = (ImageWriteQueueItem) item; |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 680 | final String filePath = imageWriteQueueItem.mFilePath; |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 681 | final Bitmap bitmap = imageWriteQueueItem.mImage; |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 682 | if (DEBUG) Slog.d(TAG, "writing bitmap: filename=" + filePath); |
Craig Mautner | c0ffce5 | 2014-07-01 12:38:52 -0700 | [diff] [blame] | 683 | FileOutputStream imageFile = null; |
| 684 | try { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 685 | imageFile = new FileOutputStream(new File(filePath)); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 686 | bitmap.compress(Bitmap.CompressFormat.PNG, 100, imageFile); |
Craig Mautner | c0ffce5 | 2014-07-01 12:38:52 -0700 | [diff] [blame] | 687 | } catch (Exception e) { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 688 | Slog.e(TAG, "saveImage: unable to save " + filePath, e); |
Craig Mautner | c0ffce5 | 2014-07-01 12:38:52 -0700 | [diff] [blame] | 689 | } finally { |
Wale Ogunwale | 18795a2 | 2014-12-03 11:38:33 -0800 | [diff] [blame] | 690 | IoUtils.closeQuietly(imageFile); |
Craig Mautner | c0ffce5 | 2014-07-01 12:38:52 -0700 | [diff] [blame] | 691 | } |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 692 | } else if (item instanceof TaskWriteQueueItem) { |
| 693 | // Write out one task. |
| 694 | StringWriter stringWriter = null; |
| 695 | TaskRecord task = ((TaskWriteQueueItem) item).mTask; |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 696 | if (DEBUG) Slog.d(TAG, "Writing task=" + task); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 697 | synchronized (mService) { |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 698 | if (task.inRecents) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 699 | // Still there. |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 700 | try { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 701 | if (DEBUG) Slog.d(TAG, "Saving task=" + task); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 702 | stringWriter = saveToXml(task); |
| 703 | } catch (IOException e) { |
| 704 | } catch (XmlPullParserException e) { |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 705 | } |
| 706 | } |
Dianne Hackborn | 852975d | 2014-08-22 17:42:43 -0700 | [diff] [blame] | 707 | } |
| 708 | if (stringWriter != null) { |
| 709 | // Write out xml file while not holding mService lock. |
| 710 | FileOutputStream file = null; |
| 711 | AtomicFile atomicFile = null; |
| 712 | try { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 713 | atomicFile = new AtomicFile(new File( |
| 714 | getUserTasksDir(task.userId), |
| 715 | String.valueOf(task.taskId) + RECENTS_FILENAME |
| 716 | + TASK_EXTENSION)); |
Dianne Hackborn | 852975d | 2014-08-22 17:42:43 -0700 | [diff] [blame] | 717 | file = atomicFile.startWrite(); |
| 718 | file.write(stringWriter.toString().getBytes()); |
| 719 | file.write('\n'); |
| 720 | atomicFile.finishWrite(file); |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 721 | |
Dianne Hackborn | 852975d | 2014-08-22 17:42:43 -0700 | [diff] [blame] | 722 | } catch (IOException e) { |
| 723 | if (file != null) { |
| 724 | atomicFile.failWrite(file); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 725 | } |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 726 | Slog.e(TAG, |
| 727 | "Unable to open " + atomicFile + " for persisting. " + e); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 728 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 729 | } |
| 730 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 731 | } |
| 732 | } |
| 733 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 734 | } |