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 | |
Wale Ogunwale | 18795a2 | 2014-12-03 11:38:33 -0800 | [diff] [blame] | 19 | import android.content.pm.IPackageManager; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 20 | import android.graphics.Bitmap; |
| 21 | import android.graphics.BitmapFactory; |
| 22 | import android.os.Debug; |
| 23 | import android.os.SystemClock; |
| 24 | import android.util.ArraySet; |
| 25 | import android.util.AtomicFile; |
| 26 | import android.util.Slog; |
| 27 | import android.util.Xml; |
Riley Andrews | f16c2e8 | 2015-06-02 18:24:48 -0700 | [diff] [blame] | 28 | import android.os.Process; |
Wale Ogunwale | 18795a2 | 2014-12-03 11:38:33 -0800 | [diff] [blame] | 29 | |
Amith Yamasani | 515d406 | 2015-09-28 11:30:06 -0700 | [diff] [blame] | 30 | import com.android.internal.util.ArrayUtils; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 31 | import com.android.internal.util.FastXmlSerializer; |
| 32 | import com.android.internal.util.XmlUtils; |
Wale Ogunwale | 18795a2 | 2014-12-03 11:38:33 -0800 | [diff] [blame] | 33 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 34 | import org.xmlpull.v1.XmlPullParser; |
| 35 | import org.xmlpull.v1.XmlPullParserException; |
| 36 | import org.xmlpull.v1.XmlSerializer; |
| 37 | |
| 38 | import java.io.BufferedReader; |
| 39 | import java.io.File; |
| 40 | import java.io.FileOutputStream; |
| 41 | import java.io.FileReader; |
| 42 | import java.io.IOException; |
| 43 | import java.io.StringWriter; |
| 44 | import java.util.ArrayList; |
| 45 | import java.util.Arrays; |
| 46 | import java.util.Comparator; |
Wale Ogunwale | 18795a2 | 2014-12-03 11:38:33 -0800 | [diff] [blame] | 47 | |
| 48 | import libcore.io.IoUtils; |
| 49 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 50 | public class TaskPersister { |
| 51 | static final String TAG = "TaskPersister"; |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 52 | static final boolean DEBUG = false; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 53 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 54 | /** When not flushing don't write out files faster than this */ |
| 55 | private static final long INTER_WRITE_DELAY_MS = 500; |
| 56 | |
| 57 | /** When not flushing delay this long before writing the first file out. This gives the next |
| 58 | * task being launched a chance to load its resources without this occupying IO bandwidth. */ |
| 59 | private static final long PRE_TASK_DELAY_MS = 3000; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 60 | |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 61 | /** The maximum number of entries to keep in the queue before draining it automatically. */ |
| 62 | private static final int MAX_WRITE_QUEUE_LENGTH = 6; |
| 63 | |
| 64 | /** Special value for mWriteTime to mean don't wait, just write */ |
| 65 | private static final long FLUSH_QUEUE = -1; |
| 66 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 67 | private static final String RECENTS_FILENAME = "_task"; |
| 68 | private static final String TASKS_DIRNAME = "recent_tasks"; |
| 69 | private static final String TASK_EXTENSION = ".xml"; |
| 70 | private static final String IMAGES_DIRNAME = "recent_images"; |
Craig Mautner | c0ffce5 | 2014-07-01 12:38:52 -0700 | [diff] [blame] | 71 | static final String IMAGE_EXTENSION = ".png"; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 72 | |
| 73 | private static final String TAG_TASK = "task"; |
| 74 | |
Craig Mautner | c0ffce5 | 2014-07-01 12:38:52 -0700 | [diff] [blame] | 75 | static File sImagesDir; |
| 76 | static File sTasksDir; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 77 | |
| 78 | private final ActivityManagerService mService; |
| 79 | private final ActivityStackSupervisor mStackSupervisor; |
Wale Ogunwale | c82f2f5 | 2014-12-09 09:32:50 -0800 | [diff] [blame] | 80 | private final RecentTasks mRecentTasks; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 81 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 82 | /** Value determines write delay mode as follows: |
| 83 | * < 0 We are Flushing. No delays between writes until the image queue is drained and all |
| 84 | * tasks needing persisting are written to disk. There is no delay between writes. |
| 85 | * == 0 We are Idle. Next writes will be delayed by #PRE_TASK_DELAY_MS. |
| 86 | * > 0 We are Actively writing. Next write will be at this time. Subsequent writes will be |
| 87 | * delayed by #INTER_WRITE_DELAY_MS. */ |
| 88 | private long mNextWriteTime = 0; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 89 | |
| 90 | private final LazyTaskWriterThread mLazyTaskWriterThread; |
| 91 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 92 | private static class WriteQueueItem {} |
| 93 | private static class TaskWriteQueueItem extends WriteQueueItem { |
| 94 | final TaskRecord mTask; |
Winson | c809cbb | 2015-11-02 12:06:15 -0800 | [diff] [blame^] | 95 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 96 | TaskWriteQueueItem(TaskRecord task) { |
| 97 | mTask = task; |
| 98 | } |
| 99 | } |
| 100 | private static class ImageWriteQueueItem extends WriteQueueItem { |
| 101 | final String mFilename; |
| 102 | Bitmap mImage; |
Winson | c809cbb | 2015-11-02 12:06:15 -0800 | [diff] [blame^] | 103 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 104 | ImageWriteQueueItem(String filename, Bitmap image) { |
| 105 | mFilename = filename; |
| 106 | mImage = image; |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | ArrayList<WriteQueueItem> mWriteQueue = new ArrayList<WriteQueueItem>(); |
| 111 | |
Wale Ogunwale | c82f2f5 | 2014-12-09 09:32:50 -0800 | [diff] [blame] | 112 | TaskPersister(File systemDir, ActivityStackSupervisor stackSupervisor, |
| 113 | RecentTasks recentTasks) { |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 114 | sTasksDir = new File(systemDir, TASKS_DIRNAME); |
| 115 | if (!sTasksDir.exists()) { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 116 | if (DEBUG) Slog.d(TAG, "Creating tasks directory " + sTasksDir); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 117 | if (!sTasksDir.mkdir()) { |
| 118 | Slog.e(TAG, "Failure creating tasks directory " + sTasksDir); |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | sImagesDir = new File(systemDir, IMAGES_DIRNAME); |
| 123 | if (!sImagesDir.exists()) { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 124 | if (DEBUG) Slog.d(TAG, "Creating images directory " + sTasksDir); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 125 | if (!sImagesDir.mkdir()) { |
| 126 | Slog.e(TAG, "Failure creating images directory " + sImagesDir); |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | mStackSupervisor = stackSupervisor; |
| 131 | mService = stackSupervisor.mService; |
Wale Ogunwale | c82f2f5 | 2014-12-09 09:32:50 -0800 | [diff] [blame] | 132 | mRecentTasks = recentTasks; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 133 | mLazyTaskWriterThread = new LazyTaskWriterThread("LazyTaskWriterThread"); |
| 134 | } |
| 135 | |
| 136 | void startPersisting() { |
Wale Ogunwale | c82f2f5 | 2014-12-09 09:32:50 -0800 | [diff] [blame] | 137 | if (!mLazyTaskWriterThread.isAlive()) { |
| 138 | mLazyTaskWriterThread.start(); |
| 139 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 140 | } |
| 141 | |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 142 | private void removeThumbnails(TaskRecord task) { |
| 143 | final String taskString = Integer.toString(task.taskId); |
| 144 | for (int queueNdx = mWriteQueue.size() - 1; queueNdx >= 0; --queueNdx) { |
| 145 | final WriteQueueItem item = mWriteQueue.get(queueNdx); |
| 146 | if (item instanceof ImageWriteQueueItem && |
| 147 | ((ImageWriteQueueItem) item).mFilename.startsWith(taskString)) { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 148 | if (DEBUG) Slog.d(TAG, "Removing " + ((ImageWriteQueueItem) item).mFilename + |
| 149 | " from write queue"); |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 150 | mWriteQueue.remove(queueNdx); |
| 151 | } |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | private void yieldIfQueueTooDeep() { |
| 156 | boolean stall = false; |
| 157 | synchronized (this) { |
| 158 | if (mNextWriteTime == FLUSH_QUEUE) { |
| 159 | stall = true; |
| 160 | } |
| 161 | } |
| 162 | if (stall) { |
| 163 | Thread.yield(); |
| 164 | } |
| 165 | } |
| 166 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 167 | void wakeup(TaskRecord task, boolean flush) { |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 168 | synchronized (this) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 169 | if (task != null) { |
| 170 | int queueNdx; |
| 171 | for (queueNdx = mWriteQueue.size() - 1; queueNdx >= 0; --queueNdx) { |
| 172 | final WriteQueueItem item = mWriteQueue.get(queueNdx); |
| 173 | if (item instanceof TaskWriteQueueItem && |
| 174 | ((TaskWriteQueueItem) item).mTask == task) { |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 175 | if (!task.inRecents) { |
| 176 | // This task is being removed. |
| 177 | removeThumbnails(task); |
| 178 | } |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 179 | break; |
| 180 | } |
| 181 | } |
Wale Ogunwale | be23ff4 | 2014-10-21 16:29:51 -0700 | [diff] [blame] | 182 | if (queueNdx < 0 && task.isPersistable) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 183 | mWriteQueue.add(new TaskWriteQueueItem(task)); |
| 184 | } |
| 185 | } else { |
| 186 | // Dummy. |
| 187 | mWriteQueue.add(new WriteQueueItem()); |
| 188 | } |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 189 | if (flush || mWriteQueue.size() > MAX_WRITE_QUEUE_LENGTH) { |
| 190 | mNextWriteTime = FLUSH_QUEUE; |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 191 | } else if (mNextWriteTime == 0) { |
| 192 | mNextWriteTime = SystemClock.uptimeMillis() + PRE_TASK_DELAY_MS; |
| 193 | } |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 194 | if (DEBUG) Slog.d(TAG, "wakeup: task=" + task + " flush=" + flush + " mNextWriteTime=" |
| 195 | + mNextWriteTime + " mWriteQueue.size=" + mWriteQueue.size() |
| 196 | + " Callers=" + Debug.getCallers(4)); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 197 | notifyAll(); |
| 198 | } |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 199 | |
| 200 | yieldIfQueueTooDeep(); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 201 | } |
| 202 | |
Dianne Hackborn | ce0fd76 | 2014-09-19 12:58:15 -0700 | [diff] [blame] | 203 | void flush() { |
| 204 | synchronized (this) { |
| 205 | mNextWriteTime = FLUSH_QUEUE; |
| 206 | notifyAll(); |
| 207 | do { |
| 208 | try { |
| 209 | wait(); |
| 210 | } catch (InterruptedException e) { |
| 211 | } |
| 212 | } while (mNextWriteTime == FLUSH_QUEUE); |
| 213 | } |
| 214 | } |
| 215 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 216 | void saveImage(Bitmap image, String filename) { |
| 217 | synchronized (this) { |
| 218 | int queueNdx; |
| 219 | for (queueNdx = mWriteQueue.size() - 1; queueNdx >= 0; --queueNdx) { |
| 220 | final WriteQueueItem item = mWriteQueue.get(queueNdx); |
| 221 | if (item instanceof ImageWriteQueueItem) { |
| 222 | ImageWriteQueueItem imageWriteQueueItem = (ImageWriteQueueItem) item; |
| 223 | if (imageWriteQueueItem.mFilename.equals(filename)) { |
| 224 | // replace the Bitmap with the new one. |
| 225 | imageWriteQueueItem.mImage = image; |
| 226 | break; |
| 227 | } |
| 228 | } |
| 229 | } |
| 230 | if (queueNdx < 0) { |
| 231 | mWriteQueue.add(new ImageWriteQueueItem(filename, image)); |
| 232 | } |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 233 | if (mWriteQueue.size() > MAX_WRITE_QUEUE_LENGTH) { |
| 234 | mNextWriteTime = FLUSH_QUEUE; |
| 235 | } else if (mNextWriteTime == 0) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 236 | mNextWriteTime = SystemClock.uptimeMillis() + PRE_TASK_DELAY_MS; |
| 237 | } |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 238 | if (DEBUG) Slog.d(TAG, "saveImage: filename=" + filename + " now=" + |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 239 | SystemClock.uptimeMillis() + " mNextWriteTime=" + |
| 240 | mNextWriteTime + " Callers=" + Debug.getCallers(4)); |
| 241 | notifyAll(); |
| 242 | } |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 243 | |
| 244 | yieldIfQueueTooDeep(); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 245 | } |
| 246 | |
Craig Mautner | 648f69b | 2014-09-18 14:16:26 -0700 | [diff] [blame] | 247 | Bitmap getTaskDescriptionIcon(String filename) { |
| 248 | // See if it is in the write queue |
| 249 | final Bitmap icon = getImageFromWriteQueue(filename); |
| 250 | if (icon != null) { |
| 251 | return icon; |
| 252 | } |
| 253 | return restoreImage(filename); |
| 254 | } |
| 255 | |
| 256 | Bitmap getImageFromWriteQueue(String filename) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 257 | synchronized (this) { |
| 258 | for (int queueNdx = mWriteQueue.size() - 1; queueNdx >= 0; --queueNdx) { |
| 259 | final WriteQueueItem item = mWriteQueue.get(queueNdx); |
| 260 | if (item instanceof ImageWriteQueueItem) { |
| 261 | ImageWriteQueueItem imageWriteQueueItem = (ImageWriteQueueItem) item; |
| 262 | if (imageWriteQueueItem.mFilename.equals(filename)) { |
| 263 | return imageWriteQueueItem.mImage; |
| 264 | } |
| 265 | } |
| 266 | } |
| 267 | return null; |
| 268 | } |
| 269 | } |
| 270 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 271 | private StringWriter saveToXml(TaskRecord task) throws IOException, XmlPullParserException { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 272 | if (DEBUG) Slog.d(TAG, "saveToXml: task=" + task); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 273 | final XmlSerializer xmlSerializer = new FastXmlSerializer(); |
| 274 | StringWriter stringWriter = new StringWriter(); |
| 275 | xmlSerializer.setOutput(stringWriter); |
| 276 | |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 277 | if (DEBUG) xmlSerializer.setFeature( |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 278 | "http://xmlpull.org/v1/doc/features.html#indent-output", true); |
| 279 | |
| 280 | // save task |
| 281 | xmlSerializer.startDocument(null, true); |
| 282 | |
| 283 | xmlSerializer.startTag(null, TAG_TASK); |
| 284 | task.saveToXml(xmlSerializer); |
| 285 | xmlSerializer.endTag(null, TAG_TASK); |
| 286 | |
| 287 | xmlSerializer.endDocument(); |
| 288 | xmlSerializer.flush(); |
| 289 | |
| 290 | return stringWriter; |
| 291 | } |
| 292 | |
Craig Mautner | 77b0426 | 2014-06-27 15:22:12 -0700 | [diff] [blame] | 293 | private String fileToString(File file) { |
| 294 | final String newline = System.lineSeparator(); |
| 295 | try { |
| 296 | BufferedReader reader = new BufferedReader(new FileReader(file)); |
| 297 | StringBuffer sb = new StringBuffer((int) file.length() * 2); |
| 298 | String line; |
| 299 | while ((line = reader.readLine()) != null) { |
| 300 | sb.append(line + newline); |
| 301 | } |
| 302 | reader.close(); |
| 303 | return sb.toString(); |
| 304 | } catch (IOException ioe) { |
| 305 | Slog.e(TAG, "Couldn't read file " + file.getName()); |
| 306 | return null; |
| 307 | } |
| 308 | } |
| 309 | |
Craig Mautner | a228ae9 | 2014-07-09 05:44:55 -0700 | [diff] [blame] | 310 | private TaskRecord taskIdToTask(int taskId, ArrayList<TaskRecord> tasks) { |
| 311 | if (taskId < 0) { |
| 312 | return null; |
| 313 | } |
| 314 | for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) { |
| 315 | final TaskRecord task = tasks.get(taskNdx); |
| 316 | if (task.taskId == taskId) { |
| 317 | return task; |
| 318 | } |
| 319 | } |
| 320 | Slog.e(TAG, "Restore affiliation error looking for taskId=" + taskId); |
| 321 | return null; |
| 322 | } |
| 323 | |
Amith Yamasani | 515d406 | 2015-09-28 11:30:06 -0700 | [diff] [blame] | 324 | ArrayList<TaskRecord> restoreTasksLocked(final int [] validUserIds) { |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 325 | final ArrayList<TaskRecord> tasks = new ArrayList<TaskRecord>(); |
| 326 | ArraySet<Integer> recoveredTaskIds = new ArraySet<Integer>(); |
| 327 | |
| 328 | File[] recentFiles = sTasksDir.listFiles(); |
| 329 | if (recentFiles == null) { |
| 330 | Slog.e(TAG, "Unable to list files from " + sTasksDir); |
| 331 | return tasks; |
| 332 | } |
| 333 | |
| 334 | for (int taskNdx = 0; taskNdx < recentFiles.length; ++taskNdx) { |
| 335 | File taskFile = recentFiles[taskNdx]; |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 336 | if (DEBUG) Slog.d(TAG, "restoreTasksLocked: taskFile=" + taskFile.getName()); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 337 | BufferedReader reader = null; |
Craig Mautner | e0129b3 | 2014-05-25 16:41:09 -0700 | [diff] [blame] | 338 | boolean deleteFile = false; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 339 | try { |
| 340 | reader = new BufferedReader(new FileReader(taskFile)); |
| 341 | final XmlPullParser in = Xml.newPullParser(); |
| 342 | in.setInput(reader); |
| 343 | |
| 344 | int event; |
| 345 | while (((event = in.next()) != XmlPullParser.END_DOCUMENT) && |
| 346 | event != XmlPullParser.END_TAG) { |
| 347 | final String name = in.getName(); |
| 348 | if (event == XmlPullParser.START_TAG) { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 349 | if (DEBUG) Slog.d(TAG, "restoreTasksLocked: START_TAG name=" + name); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 350 | if (TAG_TASK.equals(name)) { |
| 351 | final TaskRecord task = |
| 352 | TaskRecord.restoreFromXml(in, mStackSupervisor); |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 353 | if (DEBUG) Slog.d(TAG, "restoreTasksLocked: restored task=" + |
Craig Mautner | 77b0426 | 2014-06-27 15:22:12 -0700 | [diff] [blame] | 354 | task); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 355 | if (task != null) { |
Dianne Hackborn | 852975d | 2014-08-22 17:42:43 -0700 | [diff] [blame] | 356 | // XXX Don't add to write queue... there is no reason to write |
| 357 | // out the stuff we just read, if we don't write it we will |
| 358 | // read the same thing again. |
| 359 | //mWriteQueue.add(new TaskWriteQueueItem(task)); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 360 | final int taskId = task.taskId; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 361 | mStackSupervisor.setNextTaskId(taskId); |
Amith Yamasani | 515d406 | 2015-09-28 11:30:06 -0700 | [diff] [blame] | 362 | // Check if it's a valid user id. Don't add tasks for removed users. |
| 363 | if (ArrayUtils.contains(validUserIds, task.userId)) { |
| 364 | task.isPersistable = true; |
| 365 | tasks.add(task); |
| 366 | recoveredTaskIds.add(taskId); |
| 367 | } |
Craig Mautner | 77b0426 | 2014-06-27 15:22:12 -0700 | [diff] [blame] | 368 | } else { |
| 369 | Slog.e(TAG, "Unable to restore taskFile=" + taskFile + ": " + |
| 370 | fileToString(taskFile)); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 371 | } |
| 372 | } else { |
Craig Mautner | 43e52ed | 2014-06-16 17:18:52 -0700 | [diff] [blame] | 373 | Slog.wtf(TAG, "restoreTasksLocked Unknown xml event=" + event + |
| 374 | " name=" + name); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 375 | } |
| 376 | } |
| 377 | XmlUtils.skipCurrentTag(in); |
| 378 | } |
Craig Mautner | e0129b3 | 2014-05-25 16:41:09 -0700 | [diff] [blame] | 379 | } catch (Exception e) { |
Craig Mautner | a228ae9 | 2014-07-09 05:44:55 -0700 | [diff] [blame] | 380 | Slog.wtf(TAG, "Unable to parse " + taskFile + ". Error ", e); |
Craig Mautner | 77b0426 | 2014-06-27 15:22:12 -0700 | [diff] [blame] | 381 | Slog.e(TAG, "Failing file: " + fileToString(taskFile)); |
Craig Mautner | e0129b3 | 2014-05-25 16:41:09 -0700 | [diff] [blame] | 382 | deleteFile = true; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 383 | } finally { |
Wale Ogunwale | 18795a2 | 2014-12-03 11:38:33 -0800 | [diff] [blame] | 384 | IoUtils.closeQuietly(reader); |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 385 | if (deleteFile) { |
| 386 | if (DEBUG) Slog.d(TAG, "Deleting file=" + taskFile.getName()); |
Craig Mautner | e0129b3 | 2014-05-25 16:41:09 -0700 | [diff] [blame] | 387 | taskFile.delete(); |
| 388 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 389 | } |
| 390 | } |
| 391 | |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 392 | if (!DEBUG) { |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 393 | removeObsoleteFiles(recoveredTaskIds); |
| 394 | } |
| 395 | |
Craig Mautner | a228ae9 | 2014-07-09 05:44:55 -0700 | [diff] [blame] | 396 | // Fixup task affiliation from taskIds |
| 397 | for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) { |
| 398 | final TaskRecord task = tasks.get(taskNdx); |
| 399 | task.setPrevAffiliate(taskIdToTask(task.mPrevAffiliateTaskId, tasks)); |
| 400 | task.setNextAffiliate(taskIdToTask(task.mNextAffiliateTaskId, tasks)); |
| 401 | } |
| 402 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 403 | TaskRecord[] tasksArray = new TaskRecord[tasks.size()]; |
| 404 | tasks.toArray(tasksArray); |
| 405 | Arrays.sort(tasksArray, new Comparator<TaskRecord>() { |
| 406 | @Override |
| 407 | public int compare(TaskRecord lhs, TaskRecord rhs) { |
Craig Mautner | 43e52ed | 2014-06-16 17:18:52 -0700 | [diff] [blame] | 408 | final long diff = rhs.mLastTimeMoved - lhs.mLastTimeMoved; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 409 | if (diff < 0) { |
| 410 | return -1; |
| 411 | } else if (diff > 0) { |
| 412 | return +1; |
| 413 | } else { |
| 414 | return 0; |
| 415 | } |
| 416 | } |
| 417 | }); |
| 418 | |
| 419 | return new ArrayList<TaskRecord>(Arrays.asList(tasksArray)); |
| 420 | } |
| 421 | |
Craig Mautner | e0129b3 | 2014-05-25 16:41:09 -0700 | [diff] [blame] | 422 | private static void removeObsoleteFiles(ArraySet<Integer> persistentTaskIds, File[] files) { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 423 | if (DEBUG) Slog.d(TAG, "removeObsoleteFile: persistentTaskIds=" + persistentTaskIds + |
| 424 | " files=" + files); |
Craig Mautner | a5badf0 | 2014-09-11 12:47:03 -0700 | [diff] [blame] | 425 | if (files == null) { |
| 426 | Slog.e(TAG, "File error accessing recents directory (too many files open?)."); |
| 427 | return; |
| 428 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 429 | for (int fileNdx = 0; fileNdx < files.length; ++fileNdx) { |
| 430 | File file = files[fileNdx]; |
| 431 | String filename = file.getName(); |
Craig Mautner | ffcfcaa | 2014-06-05 09:54:38 -0700 | [diff] [blame] | 432 | final int taskIdEnd = filename.indexOf('_'); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 433 | if (taskIdEnd > 0) { |
| 434 | final int taskId; |
| 435 | try { |
| 436 | taskId = Integer.valueOf(filename.substring(0, taskIdEnd)); |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 437 | if (DEBUG) Slog.d(TAG, "removeObsoleteFile: Found taskId=" + taskId); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 438 | } catch (Exception e) { |
Craig Mautner | 43e52ed | 2014-06-16 17:18:52 -0700 | [diff] [blame] | 439 | Slog.wtf(TAG, "removeObsoleteFile: Can't parse file=" + file.getName()); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 440 | file.delete(); |
| 441 | continue; |
| 442 | } |
| 443 | if (!persistentTaskIds.contains(taskId)) { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 444 | if (DEBUG) Slog.d(TAG, "removeObsoleteFile: deleting file=" + file.getName()); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 445 | file.delete(); |
| 446 | } |
| 447 | } |
| 448 | } |
| 449 | } |
| 450 | |
| 451 | private void removeObsoleteFiles(ArraySet<Integer> persistentTaskIds) { |
| 452 | removeObsoleteFiles(persistentTaskIds, sTasksDir.listFiles()); |
| 453 | removeObsoleteFiles(persistentTaskIds, sImagesDir.listFiles()); |
| 454 | } |
| 455 | |
| 456 | static Bitmap restoreImage(String filename) { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 457 | if (DEBUG) Slog.d(TAG, "restoreImage: restoring " + filename); |
Craig Mautner | c0ffce5 | 2014-07-01 12:38:52 -0700 | [diff] [blame] | 458 | return BitmapFactory.decodeFile(sImagesDir + File.separator + filename); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 459 | } |
| 460 | |
| 461 | private class LazyTaskWriterThread extends Thread { |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 462 | |
| 463 | LazyTaskWriterThread(String name) { |
| 464 | super(name); |
| 465 | } |
| 466 | |
| 467 | @Override |
| 468 | public void run() { |
Riley Andrews | f16c2e8 | 2015-06-02 18:24:48 -0700 | [diff] [blame] | 469 | Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 470 | ArraySet<Integer> persistentTaskIds = new ArraySet<Integer>(); |
| 471 | while (true) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 472 | // We can't lock mService while holding TaskPersister.this, but we don't want to |
| 473 | // call removeObsoleteFiles every time through the loop, only the last time before |
| 474 | // going to sleep. The risk is that we call removeObsoleteFiles() successively. |
| 475 | final boolean probablyDone; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 476 | synchronized (TaskPersister.this) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 477 | probablyDone = mWriteQueue.isEmpty(); |
| 478 | } |
| 479 | if (probablyDone) { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 480 | if (DEBUG) Slog.d(TAG, "Looking for obsolete files."); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 481 | persistentTaskIds.clear(); |
| 482 | synchronized (mService) { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 483 | if (DEBUG) Slog.d(TAG, "mRecents=" + mRecentTasks); |
Wale Ogunwale | c82f2f5 | 2014-12-09 09:32:50 -0800 | [diff] [blame] | 484 | for (int taskNdx = mRecentTasks.size() - 1; taskNdx >= 0; --taskNdx) { |
| 485 | final TaskRecord task = mRecentTasks.get(taskNdx); |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 486 | if (DEBUG) Slog.d(TAG, "LazyTaskWriter: task=" + task + |
Wale Ogunwale | be23ff4 | 2014-10-21 16:29:51 -0700 | [diff] [blame] | 487 | " persistable=" + task.isPersistable); |
| 488 | if ((task.isPersistable || task.inRecents) |
Wale Ogunwale | 18795a2 | 2014-12-03 11:38:33 -0800 | [diff] [blame] | 489 | && (task.stack == null || !task.stack.isHomeStack())) { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 490 | if (DEBUG) Slog.d(TAG, "adding to persistentTaskIds task=" + task); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 491 | persistentTaskIds.add(task.taskId); |
| 492 | } else { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 493 | if (DEBUG) Slog.d(TAG, |
Wale Ogunwale | be23ff4 | 2014-10-21 16:29:51 -0700 | [diff] [blame] | 494 | "omitting from persistentTaskIds task=" + task); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 495 | } |
| 496 | } |
| 497 | } |
| 498 | removeObsoleteFiles(persistentTaskIds); |
| 499 | } |
| 500 | |
| 501 | // If mNextWriteTime, then don't delay between each call to saveToXml(). |
| 502 | final WriteQueueItem item; |
| 503 | synchronized (TaskPersister.this) { |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 504 | if (mNextWriteTime != FLUSH_QUEUE) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 505 | // The next write we don't have to wait so long. |
| 506 | mNextWriteTime = SystemClock.uptimeMillis() + INTER_WRITE_DELAY_MS; |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 507 | if (DEBUG) Slog.d(TAG, "Next write time may be in " + |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 508 | INTER_WRITE_DELAY_MS + " msec. (" + mNextWriteTime + ")"); |
| 509 | } |
| 510 | |
Dianne Hackborn | ce0fd76 | 2014-09-19 12:58:15 -0700 | [diff] [blame] | 511 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 512 | while (mWriteQueue.isEmpty()) { |
Dianne Hackborn | ce0fd76 | 2014-09-19 12:58:15 -0700 | [diff] [blame] | 513 | if (mNextWriteTime != 0) { |
| 514 | mNextWriteTime = 0; // idle. |
| 515 | TaskPersister.this.notifyAll(); // wake up flush() if needed. |
| 516 | } |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 517 | try { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 518 | if (DEBUG) Slog.d(TAG, "LazyTaskWriter: waiting indefinitely."); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 519 | TaskPersister.this.wait(); |
| 520 | } catch (InterruptedException e) { |
| 521 | } |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 522 | // Invariant: mNextWriteTime is either FLUSH_QUEUE or PRE_WRITE_DELAY_MS |
| 523 | // from now. |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 524 | } |
| 525 | item = mWriteQueue.remove(0); |
| 526 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 527 | long now = SystemClock.uptimeMillis(); |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 528 | if (DEBUG) Slog.d(TAG, "LazyTaskWriter: now=" + now + " mNextWriteTime=" + |
| 529 | mNextWriteTime + " mWriteQueue.size=" + mWriteQueue.size()); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 530 | while (now < mNextWriteTime) { |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 531 | try { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 532 | if (DEBUG) Slog.d(TAG, "LazyTaskWriter: waiting " + |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 533 | (mNextWriteTime - now)); |
| 534 | TaskPersister.this.wait(mNextWriteTime - now); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 535 | } catch (InterruptedException e) { |
| 536 | } |
| 537 | now = SystemClock.uptimeMillis(); |
| 538 | } |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 539 | |
| 540 | // Got something to do. |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 541 | } |
| 542 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 543 | if (item instanceof ImageWriteQueueItem) { |
| 544 | ImageWriteQueueItem imageWriteQueueItem = (ImageWriteQueueItem) item; |
| 545 | final String filename = imageWriteQueueItem.mFilename; |
| 546 | final Bitmap bitmap = imageWriteQueueItem.mImage; |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 547 | if (DEBUG) Slog.d(TAG, "writing bitmap: filename=" + filename); |
Craig Mautner | c0ffce5 | 2014-07-01 12:38:52 -0700 | [diff] [blame] | 548 | FileOutputStream imageFile = null; |
| 549 | try { |
| 550 | imageFile = new FileOutputStream(new File(sImagesDir, filename)); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 551 | bitmap.compress(Bitmap.CompressFormat.PNG, 100, imageFile); |
Craig Mautner | c0ffce5 | 2014-07-01 12:38:52 -0700 | [diff] [blame] | 552 | } catch (Exception e) { |
| 553 | Slog.e(TAG, "saveImage: unable to save " + filename, e); |
| 554 | } finally { |
Wale Ogunwale | 18795a2 | 2014-12-03 11:38:33 -0800 | [diff] [blame] | 555 | IoUtils.closeQuietly(imageFile); |
Craig Mautner | c0ffce5 | 2014-07-01 12:38:52 -0700 | [diff] [blame] | 556 | } |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 557 | } else if (item instanceof TaskWriteQueueItem) { |
| 558 | // Write out one task. |
| 559 | StringWriter stringWriter = null; |
| 560 | TaskRecord task = ((TaskWriteQueueItem) item).mTask; |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 561 | if (DEBUG) Slog.d(TAG, "Writing task=" + task); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 562 | synchronized (mService) { |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 563 | if (task.inRecents) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 564 | // Still there. |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 565 | try { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 566 | if (DEBUG) Slog.d(TAG, "Saving task=" + task); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 567 | stringWriter = saveToXml(task); |
| 568 | } catch (IOException e) { |
| 569 | } catch (XmlPullParserException e) { |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 570 | } |
| 571 | } |
Dianne Hackborn | 852975d | 2014-08-22 17:42:43 -0700 | [diff] [blame] | 572 | } |
| 573 | if (stringWriter != null) { |
| 574 | // Write out xml file while not holding mService lock. |
| 575 | FileOutputStream file = null; |
| 576 | AtomicFile atomicFile = null; |
| 577 | try { |
| 578 | atomicFile = new AtomicFile(new File(sTasksDir, String.valueOf( |
| 579 | task.taskId) + RECENTS_FILENAME + TASK_EXTENSION)); |
| 580 | file = atomicFile.startWrite(); |
| 581 | file.write(stringWriter.toString().getBytes()); |
| 582 | file.write('\n'); |
| 583 | atomicFile.finishWrite(file); |
| 584 | } catch (IOException e) { |
| 585 | if (file != null) { |
| 586 | atomicFile.failWrite(file); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 587 | } |
Dianne Hackborn | 852975d | 2014-08-22 17:42:43 -0700 | [diff] [blame] | 588 | Slog.e(TAG, "Unable to open " + atomicFile + " for persisting. " + |
| 589 | e); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 590 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 591 | } |
| 592 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 593 | } |
| 594 | } |
| 595 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 596 | } |