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; |
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; |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 23 | import android.os.Environment; |
| 24 | import android.os.FileUtils; |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 25 | import android.os.Process; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 26 | import android.os.SystemClock; |
| 27 | import android.util.ArraySet; |
| 28 | import android.util.AtomicFile; |
| 29 | import android.util.Slog; |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 30 | import android.util.SparseArray; |
| 31 | import android.util.SparseBooleanArray; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 32 | import android.util.Xml; |
Wale Ogunwale | 18795a2 | 2014-12-03 11:38:33 -0800 | [diff] [blame] | 33 | |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 34 | import com.android.internal.annotations.VisibleForTesting; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 35 | import com.android.internal.util.FastXmlSerializer; |
| 36 | import com.android.internal.util.XmlUtils; |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 37 | import libcore.io.IoUtils; |
| 38 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 39 | import org.xmlpull.v1.XmlPullParser; |
| 40 | import org.xmlpull.v1.XmlPullParserException; |
| 41 | import org.xmlpull.v1.XmlSerializer; |
| 42 | |
| 43 | import java.io.BufferedReader; |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 44 | import java.io.BufferedWriter; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 45 | import java.io.File; |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 46 | import java.io.FileNotFoundException; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 47 | import java.io.FileOutputStream; |
| 48 | import java.io.FileReader; |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 49 | import java.io.FileWriter; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 50 | import java.io.IOException; |
| 51 | import java.io.StringWriter; |
| 52 | import java.util.ArrayList; |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 53 | import java.util.Collections; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 54 | import java.util.Comparator; |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 55 | import java.util.List; |
Wale Ogunwale | 18795a2 | 2014-12-03 11:38:33 -0800 | [diff] [blame] | 56 | |
Winson Chung | 7900bee | 2017-03-10 08:59:25 -0800 | [diff] [blame] | 57 | import static com.android.server.am.ActivityStackSupervisor.MATCH_TASK_IN_STACKS_OR_RECENT_TASKS; |
Wale Ogunwale | 625ed0c | 2016-10-18 08:50:31 -0700 | [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 TASKS_DIRNAME = "recent_tasks"; |
Daichi Hirono | 4cb941e | 2017-03-31 14:30:41 +0900 | [diff] [blame] | 79 | private static final String TASK_FILENAME_SUFFIX = "_task.xml"; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 80 | private static final String IMAGES_DIRNAME = "recent_images"; |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 81 | private static final String PERSISTED_TASK_IDS_FILENAME = "persisted_taskIds.txt"; |
Craig Mautner | c0ffce5 | 2014-07-01 12:38:52 -0700 | [diff] [blame] | 82 | static final String IMAGE_EXTENSION = ".png"; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 83 | |
Winson Chung | 36f3f03 | 2016-09-08 23:29:43 +0000 | [diff] [blame] | 84 | private static final String TAG_TASK = "task"; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 85 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 86 | private final ActivityManagerService mService; |
| 87 | private final ActivityStackSupervisor mStackSupervisor; |
Wale Ogunwale | c82f2f5 | 2014-12-09 09:32:50 -0800 | [diff] [blame] | 88 | private final RecentTasks mRecentTasks; |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 89 | private final SparseArray<SparseBooleanArray> mTaskIdsInFile = new SparseArray<>(); |
Suprabh Shukla | f50b458 | 2016-02-23 17:44:22 -0800 | [diff] [blame] | 90 | private final File mTaskIdsDir; |
Suprabh Shukla | fd0bd4f | 2016-08-24 14:08:29 -0700 | [diff] [blame] | 91 | // To lock file operations in TaskPersister |
| 92 | private final Object mIoLock = new Object(); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 93 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 94 | /** |
| 95 | * Value determines write delay mode as follows: < 0 We are Flushing. No delays between writes |
| 96 | * until the image queue is drained and all tasks needing persisting are written to disk. There |
| 97 | * is no delay between writes. == 0 We are Idle. Next writes will be delayed by |
| 98 | * #PRE_TASK_DELAY_MS. > 0 We are Actively writing. Next write will be at this time. Subsequent |
| 99 | * writes will be delayed by #INTER_WRITE_DELAY_MS. |
| 100 | */ |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 101 | private long mNextWriteTime = 0; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 102 | |
| 103 | private final LazyTaskWriterThread mLazyTaskWriterThread; |
| 104 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 105 | private static class WriteQueueItem {} |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 106 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 107 | private static class TaskWriteQueueItem extends WriteQueueItem { |
| 108 | final TaskRecord mTask; |
Winson | c809cbb | 2015-11-02 12:06:15 -0800 | [diff] [blame] | 109 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 110 | TaskWriteQueueItem(TaskRecord task) { |
| 111 | mTask = task; |
| 112 | } |
| 113 | } |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 114 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 115 | private static class ImageWriteQueueItem extends WriteQueueItem { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 116 | final String mFilePath; |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 117 | Bitmap mImage; |
Winson | c809cbb | 2015-11-02 12:06:15 -0800 | [diff] [blame] | 118 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 119 | ImageWriteQueueItem(String filePath, Bitmap image) { |
| 120 | mFilePath = filePath; |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 121 | mImage = image; |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | ArrayList<WriteQueueItem> mWriteQueue = new ArrayList<WriteQueueItem>(); |
| 126 | |
Wale Ogunwale | c82f2f5 | 2014-12-09 09:32:50 -0800 | [diff] [blame] | 127 | TaskPersister(File systemDir, ActivityStackSupervisor stackSupervisor, |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 128 | ActivityManagerService service, RecentTasks recentTasks) { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 129 | |
| 130 | final File legacyImagesDir = new File(systemDir, IMAGES_DIRNAME); |
| 131 | if (legacyImagesDir.exists()) { |
| 132 | if (!FileUtils.deleteContents(legacyImagesDir) || !legacyImagesDir.delete()) { |
| 133 | Slog.i(TAG, "Failure deleting legacy images directory: " + legacyImagesDir); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 134 | } |
| 135 | } |
| 136 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 137 | final File legacyTasksDir = new File(systemDir, TASKS_DIRNAME); |
| 138 | if (legacyTasksDir.exists()) { |
| 139 | if (!FileUtils.deleteContents(legacyTasksDir) || !legacyTasksDir.delete()) { |
| 140 | Slog.i(TAG, "Failure deleting legacy tasks directory: " + legacyTasksDir); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 141 | } |
| 142 | } |
| 143 | |
Suprabh Shukla | f50b458 | 2016-02-23 17:44:22 -0800 | [diff] [blame] | 144 | mTaskIdsDir = new File(Environment.getDataDirectory(), "system_de"); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 145 | mStackSupervisor = stackSupervisor; |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 146 | mService = service; |
Wale Ogunwale | c82f2f5 | 2014-12-09 09:32:50 -0800 | [diff] [blame] | 147 | mRecentTasks = recentTasks; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 148 | mLazyTaskWriterThread = new LazyTaskWriterThread("LazyTaskWriterThread"); |
| 149 | } |
| 150 | |
Suprabh Shukla | f50b458 | 2016-02-23 17:44:22 -0800 | [diff] [blame] | 151 | @VisibleForTesting |
| 152 | TaskPersister(File workingDir) { |
| 153 | mTaskIdsDir = workingDir; |
| 154 | mStackSupervisor = null; |
| 155 | mService = null; |
| 156 | mRecentTasks = null; |
| 157 | mLazyTaskWriterThread = new LazyTaskWriterThread("LazyTaskWriterThreadTest"); |
| 158 | } |
| 159 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 160 | void startPersisting() { |
Wale Ogunwale | c82f2f5 | 2014-12-09 09:32:50 -0800 | [diff] [blame] | 161 | if (!mLazyTaskWriterThread.isAlive()) { |
| 162 | mLazyTaskWriterThread.start(); |
| 163 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 164 | } |
| 165 | |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 166 | private void removeThumbnails(TaskRecord task) { |
| 167 | final String taskString = Integer.toString(task.taskId); |
| 168 | for (int queueNdx = mWriteQueue.size() - 1; queueNdx >= 0; --queueNdx) { |
| 169 | final WriteQueueItem item = mWriteQueue.get(queueNdx); |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 170 | if (item instanceof ImageWriteQueueItem) { |
| 171 | final File thumbnailFile = new File(((ImageWriteQueueItem) item).mFilePath); |
| 172 | if (thumbnailFile.getName().startsWith(taskString)) { |
| 173 | if (DEBUG) { |
| 174 | Slog.d(TAG, "Removing " + ((ImageWriteQueueItem) item).mFilePath + |
| 175 | " from write queue"); |
| 176 | } |
| 177 | mWriteQueue.remove(queueNdx); |
| 178 | } |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 179 | } |
| 180 | } |
| 181 | } |
| 182 | |
| 183 | private void yieldIfQueueTooDeep() { |
| 184 | boolean stall = false; |
| 185 | synchronized (this) { |
| 186 | if (mNextWriteTime == FLUSH_QUEUE) { |
| 187 | stall = true; |
| 188 | } |
| 189 | } |
| 190 | if (stall) { |
| 191 | Thread.yield(); |
| 192 | } |
| 193 | } |
| 194 | |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 195 | @NonNull |
| 196 | SparseBooleanArray loadPersistedTaskIdsForUser(int userId) { |
| 197 | if (mTaskIdsInFile.get(userId) != null) { |
| 198 | return mTaskIdsInFile.get(userId).clone(); |
| 199 | } |
| 200 | final SparseBooleanArray persistedTaskIds = new SparseBooleanArray(); |
Suprabh Shukla | fd0bd4f | 2016-08-24 14:08:29 -0700 | [diff] [blame] | 201 | synchronized (mIoLock) { |
| 202 | BufferedReader reader = null; |
| 203 | String line; |
| 204 | try { |
| 205 | reader = new BufferedReader(new FileReader(getUserPersistedTaskIdsFile(userId))); |
| 206 | while ((line = reader.readLine()) != null) { |
| 207 | for (String taskIdString : line.split("\\s+")) { |
| 208 | int id = Integer.parseInt(taskIdString); |
| 209 | persistedTaskIds.put(id, true); |
| 210 | } |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 211 | } |
Suprabh Shukla | fd0bd4f | 2016-08-24 14:08:29 -0700 | [diff] [blame] | 212 | } catch (FileNotFoundException e) { |
| 213 | // File doesn't exist. Ignore. |
| 214 | } catch (Exception e) { |
| 215 | Slog.e(TAG, "Error while reading taskIds file for user " + userId, e); |
| 216 | } finally { |
| 217 | IoUtils.closeQuietly(reader); |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 218 | } |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 219 | } |
| 220 | mTaskIdsInFile.put(userId, persistedTaskIds); |
| 221 | return persistedTaskIds.clone(); |
| 222 | } |
| 223 | |
Suprabh Shukla | fd0bd4f | 2016-08-24 14:08:29 -0700 | [diff] [blame] | 224 | |
Suprabh Shukla | f50b458 | 2016-02-23 17:44:22 -0800 | [diff] [blame] | 225 | @VisibleForTesting |
Suprabh Shukla | fd0bd4f | 2016-08-24 14:08:29 -0700 | [diff] [blame] | 226 | void writePersistedTaskIdsForUser(@NonNull SparseBooleanArray taskIds, int userId) { |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 227 | if (userId < 0) { |
| 228 | return; |
| 229 | } |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 230 | final File persistedTaskIdsFile = getUserPersistedTaskIdsFile(userId); |
Suprabh Shukla | fd0bd4f | 2016-08-24 14:08:29 -0700 | [diff] [blame] | 231 | synchronized (mIoLock) { |
| 232 | BufferedWriter writer = null; |
| 233 | try { |
| 234 | writer = new BufferedWriter(new FileWriter(persistedTaskIdsFile)); |
| 235 | for (int i = 0; i < taskIds.size(); i++) { |
| 236 | if (taskIds.valueAt(i)) { |
| 237 | writer.write(String.valueOf(taskIds.keyAt(i))); |
| 238 | writer.newLine(); |
| 239 | } |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 240 | } |
Suprabh Shukla | fd0bd4f | 2016-08-24 14:08:29 -0700 | [diff] [blame] | 241 | } catch (Exception e) { |
| 242 | Slog.e(TAG, "Error while writing taskIds file for user " + userId, e); |
| 243 | } finally { |
| 244 | IoUtils.closeQuietly(writer); |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 245 | } |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 246 | } |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 247 | } |
| 248 | |
| 249 | void unloadUserDataFromMemory(int userId) { |
| 250 | mTaskIdsInFile.delete(userId); |
| 251 | } |
| 252 | |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 253 | void wakeup(TaskRecord task, boolean flush) { |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 254 | synchronized (this) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 255 | if (task != null) { |
| 256 | int queueNdx; |
| 257 | for (queueNdx = mWriteQueue.size() - 1; queueNdx >= 0; --queueNdx) { |
| 258 | final WriteQueueItem item = mWriteQueue.get(queueNdx); |
| 259 | if (item instanceof TaskWriteQueueItem && |
| 260 | ((TaskWriteQueueItem) item).mTask == task) { |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 261 | if (!task.inRecents) { |
| 262 | // This task is being removed. |
| 263 | removeThumbnails(task); |
| 264 | } |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 265 | break; |
| 266 | } |
| 267 | } |
Wale Ogunwale | be23ff4 | 2014-10-21 16:29:51 -0700 | [diff] [blame] | 268 | if (queueNdx < 0 && task.isPersistable) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 269 | mWriteQueue.add(new TaskWriteQueueItem(task)); |
| 270 | } |
| 271 | } else { |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 272 | // Dummy. Ensures removeObsoleteFiles is called when LazyTaskThreadWriter is |
| 273 | // notified. |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 274 | mWriteQueue.add(new WriteQueueItem()); |
| 275 | } |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 276 | if (flush || mWriteQueue.size() > MAX_WRITE_QUEUE_LENGTH) { |
| 277 | mNextWriteTime = FLUSH_QUEUE; |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 278 | } else if (mNextWriteTime == 0) { |
| 279 | mNextWriteTime = SystemClock.uptimeMillis() + PRE_TASK_DELAY_MS; |
| 280 | } |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 281 | if (DEBUG) Slog.d(TAG, "wakeup: task=" + task + " flush=" + flush + " mNextWriteTime=" |
| 282 | + mNextWriteTime + " mWriteQueue.size=" + mWriteQueue.size() |
| 283 | + " Callers=" + Debug.getCallers(4)); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 284 | notifyAll(); |
| 285 | } |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 286 | |
| 287 | yieldIfQueueTooDeep(); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 288 | } |
| 289 | |
Dianne Hackborn | ce0fd76 | 2014-09-19 12:58:15 -0700 | [diff] [blame] | 290 | void flush() { |
| 291 | synchronized (this) { |
| 292 | mNextWriteTime = FLUSH_QUEUE; |
| 293 | notifyAll(); |
| 294 | do { |
| 295 | try { |
| 296 | wait(); |
| 297 | } catch (InterruptedException e) { |
| 298 | } |
| 299 | } while (mNextWriteTime == FLUSH_QUEUE); |
| 300 | } |
| 301 | } |
| 302 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 303 | void saveImage(Bitmap image, String filePath) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 304 | synchronized (this) { |
| 305 | int queueNdx; |
| 306 | for (queueNdx = mWriteQueue.size() - 1; queueNdx >= 0; --queueNdx) { |
| 307 | final WriteQueueItem item = mWriteQueue.get(queueNdx); |
| 308 | if (item instanceof ImageWriteQueueItem) { |
| 309 | ImageWriteQueueItem imageWriteQueueItem = (ImageWriteQueueItem) item; |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 310 | if (imageWriteQueueItem.mFilePath.equals(filePath)) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 311 | // replace the Bitmap with the new one. |
| 312 | imageWriteQueueItem.mImage = image; |
| 313 | break; |
| 314 | } |
| 315 | } |
| 316 | } |
| 317 | if (queueNdx < 0) { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 318 | mWriteQueue.add(new ImageWriteQueueItem(filePath, image)); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 319 | } |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 320 | if (mWriteQueue.size() > MAX_WRITE_QUEUE_LENGTH) { |
| 321 | mNextWriteTime = FLUSH_QUEUE; |
| 322 | } else if (mNextWriteTime == 0) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 323 | mNextWriteTime = SystemClock.uptimeMillis() + PRE_TASK_DELAY_MS; |
| 324 | } |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 325 | if (DEBUG) Slog.d(TAG, "saveImage: filePath=" + filePath + " now=" + |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 326 | SystemClock.uptimeMillis() + " mNextWriteTime=" + |
| 327 | mNextWriteTime + " Callers=" + Debug.getCallers(4)); |
| 328 | notifyAll(); |
| 329 | } |
Craig Mautner | 63f1090 | 2014-09-16 23:57:21 -0700 | [diff] [blame] | 330 | |
| 331 | yieldIfQueueTooDeep(); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 332 | } |
| 333 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 334 | Bitmap getTaskDescriptionIcon(String filePath) { |
Craig Mautner | 648f69b | 2014-09-18 14:16:26 -0700 | [diff] [blame] | 335 | // See if it is in the write queue |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 336 | final Bitmap icon = getImageFromWriteQueue(filePath); |
Craig Mautner | 648f69b | 2014-09-18 14:16:26 -0700 | [diff] [blame] | 337 | if (icon != null) { |
| 338 | return icon; |
| 339 | } |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 340 | return restoreImage(filePath); |
Craig Mautner | 648f69b | 2014-09-18 14:16:26 -0700 | [diff] [blame] | 341 | } |
| 342 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 343 | Bitmap getImageFromWriteQueue(String filePath) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 344 | synchronized (this) { |
| 345 | for (int queueNdx = mWriteQueue.size() - 1; queueNdx >= 0; --queueNdx) { |
| 346 | final WriteQueueItem item = mWriteQueue.get(queueNdx); |
| 347 | if (item instanceof ImageWriteQueueItem) { |
| 348 | ImageWriteQueueItem imageWriteQueueItem = (ImageWriteQueueItem) item; |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 349 | if (imageWriteQueueItem.mFilePath.equals(filePath)) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 350 | return imageWriteQueueItem.mImage; |
| 351 | } |
| 352 | } |
| 353 | } |
| 354 | return null; |
| 355 | } |
| 356 | } |
| 357 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 358 | private StringWriter saveToXml(TaskRecord task) throws IOException, XmlPullParserException { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 359 | if (DEBUG) Slog.d(TAG, "saveToXml: task=" + task); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 360 | final XmlSerializer xmlSerializer = new FastXmlSerializer(); |
| 361 | StringWriter stringWriter = new StringWriter(); |
| 362 | xmlSerializer.setOutput(stringWriter); |
| 363 | |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 364 | if (DEBUG) xmlSerializer.setFeature( |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 365 | "http://xmlpull.org/v1/doc/features.html#indent-output", true); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 366 | |
| 367 | // save task |
| 368 | xmlSerializer.startDocument(null, true); |
| 369 | |
| 370 | xmlSerializer.startTag(null, TAG_TASK); |
| 371 | task.saveToXml(xmlSerializer); |
| 372 | xmlSerializer.endTag(null, TAG_TASK); |
| 373 | |
| 374 | xmlSerializer.endDocument(); |
| 375 | xmlSerializer.flush(); |
| 376 | |
| 377 | return stringWriter; |
| 378 | } |
| 379 | |
Craig Mautner | 77b0426 | 2014-06-27 15:22:12 -0700 | [diff] [blame] | 380 | private String fileToString(File file) { |
| 381 | final String newline = System.lineSeparator(); |
| 382 | try { |
| 383 | BufferedReader reader = new BufferedReader(new FileReader(file)); |
| 384 | StringBuffer sb = new StringBuffer((int) file.length() * 2); |
| 385 | String line; |
| 386 | while ((line = reader.readLine()) != null) { |
| 387 | sb.append(line + newline); |
| 388 | } |
| 389 | reader.close(); |
| 390 | return sb.toString(); |
| 391 | } catch (IOException ioe) { |
| 392 | Slog.e(TAG, "Couldn't read file " + file.getName()); |
| 393 | return null; |
| 394 | } |
| 395 | } |
| 396 | |
Craig Mautner | a228ae9 | 2014-07-09 05:44:55 -0700 | [diff] [blame] | 397 | private TaskRecord taskIdToTask(int taskId, ArrayList<TaskRecord> tasks) { |
| 398 | if (taskId < 0) { |
| 399 | return null; |
| 400 | } |
| 401 | for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) { |
| 402 | final TaskRecord task = tasks.get(taskNdx); |
| 403 | if (task.taskId == taskId) { |
| 404 | return task; |
| 405 | } |
| 406 | } |
| 407 | Slog.e(TAG, "Restore affiliation error looking for taskId=" + taskId); |
| 408 | return null; |
| 409 | } |
| 410 | |
Daichi Hirono | 4cb941e | 2017-03-31 14:30:41 +0900 | [diff] [blame] | 411 | List<TaskRecord> restoreTasksForUserLocked(final int userId, SparseBooleanArray preaddedTasks) { |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 412 | final ArrayList<TaskRecord> tasks = new ArrayList<TaskRecord>(); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 413 | ArraySet<Integer> recoveredTaskIds = new ArraySet<Integer>(); |
| 414 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 415 | File userTasksDir = getUserTasksDir(userId); |
Winson Chung | 36f3f03 | 2016-09-08 23:29:43 +0000 | [diff] [blame] | 416 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 417 | File[] recentFiles = userTasksDir.listFiles(); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 418 | if (recentFiles == null) { |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 419 | Slog.e(TAG, "restoreTasksForUserLocked: Unable to list files from " + userTasksDir); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 420 | return tasks; |
| 421 | } |
| 422 | |
| 423 | for (int taskNdx = 0; taskNdx < recentFiles.length; ++taskNdx) { |
| 424 | File taskFile = recentFiles[taskNdx]; |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 425 | if (DEBUG) { |
| 426 | Slog.d(TAG, "restoreTasksForUserLocked: userId=" + userId |
| 427 | + ", taskFile=" + taskFile.getName()); |
| 428 | } |
Daichi Hirono | 4cb941e | 2017-03-31 14:30:41 +0900 | [diff] [blame] | 429 | |
| 430 | if (!taskFile.getName().endsWith(TASK_FILENAME_SUFFIX)) { |
| 431 | continue; |
| 432 | } |
| 433 | try { |
| 434 | final int taskId = Integer.parseInt(taskFile.getName().substring( |
| 435 | 0 /* beginIndex */, |
| 436 | taskFile.getName().length() - TASK_FILENAME_SUFFIX.length())); |
| 437 | if (preaddedTasks.get(taskId, false)) { |
| 438 | Slog.w(TAG, "Task #" + taskId + |
| 439 | " has already been created so we don't restore again"); |
| 440 | continue; |
| 441 | } |
| 442 | } catch (NumberFormatException e) { |
| 443 | Slog.w(TAG, "Unexpected task file name", e); |
| 444 | continue; |
| 445 | } |
| 446 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 447 | BufferedReader reader = null; |
Craig Mautner | e0129b3 | 2014-05-25 16:41:09 -0700 | [diff] [blame] | 448 | boolean deleteFile = false; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 449 | try { |
| 450 | reader = new BufferedReader(new FileReader(taskFile)); |
| 451 | final XmlPullParser in = Xml.newPullParser(); |
| 452 | in.setInput(reader); |
| 453 | |
| 454 | int event; |
| 455 | while (((event = in.next()) != XmlPullParser.END_DOCUMENT) && |
| 456 | event != XmlPullParser.END_TAG) { |
| 457 | final String name = in.getName(); |
| 458 | if (event == XmlPullParser.START_TAG) { |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 459 | if (DEBUG) Slog.d(TAG, "restoreTasksForUserLocked: START_TAG name=" + name); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 460 | if (TAG_TASK.equals(name)) { |
Winson Chung | 36f3f03 | 2016-09-08 23:29:43 +0000 | [diff] [blame] | 461 | final TaskRecord task = TaskRecord.restoreFromXml(in, mStackSupervisor); |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 462 | if (DEBUG) Slog.d(TAG, "restoreTasksForUserLocked: restored task=" |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 463 | + task); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 464 | if (task != null) { |
Winson Chung | 36f3f03 | 2016-09-08 23:29:43 +0000 | [diff] [blame] | 465 | // XXX Don't add to write queue... there is no reason to write |
| 466 | // out the stuff we just read, if we don't write it we will |
| 467 | // read the same thing again. |
| 468 | // mWriteQueue.add(new TaskWriteQueueItem(task)); |
| 469 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 470 | final int taskId = task.taskId; |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 471 | if (mStackSupervisor.anyTaskForIdLocked(taskId, |
Wale Ogunwale | 0568aed | 2017-09-08 13:29:37 -0700 | [diff] [blame] | 472 | MATCH_TASK_IN_STACKS_OR_RECENT_TASKS) != null) { |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 473 | // Should not happen. |
| 474 | Slog.wtf(TAG, "Existing task with taskId " + taskId + "found"); |
| 475 | } else if (userId != task.userId) { |
| 476 | // Should not happen. |
| 477 | Slog.wtf(TAG, "Task with userId " + task.userId + " found in " |
| 478 | + userTasksDir.getAbsolutePath()); |
| 479 | } else { |
| 480 | // Looks fine. |
| 481 | mStackSupervisor.setNextTaskIdForUserLocked(taskId, userId); |
Amith Yamasani | 515d406 | 2015-09-28 11:30:06 -0700 | [diff] [blame] | 482 | task.isPersistable = true; |
| 483 | tasks.add(task); |
| 484 | recoveredTaskIds.add(taskId); |
| 485 | } |
Craig Mautner | 77b0426 | 2014-06-27 15:22:12 -0700 | [diff] [blame] | 486 | } else { |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 487 | Slog.e(TAG, "restoreTasksForUserLocked: Unable to restore taskFile=" |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 488 | + taskFile + ": " + fileToString(taskFile)); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 489 | } |
| 490 | } else { |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 491 | Slog.wtf(TAG, "restoreTasksForUserLocked: Unknown xml event=" + event |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 492 | + " name=" + name); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 493 | } |
| 494 | } |
| 495 | XmlUtils.skipCurrentTag(in); |
| 496 | } |
Craig Mautner | e0129b3 | 2014-05-25 16:41:09 -0700 | [diff] [blame] | 497 | } catch (Exception e) { |
Craig Mautner | a228ae9 | 2014-07-09 05:44:55 -0700 | [diff] [blame] | 498 | Slog.wtf(TAG, "Unable to parse " + taskFile + ". Error ", e); |
Craig Mautner | 77b0426 | 2014-06-27 15:22:12 -0700 | [diff] [blame] | 499 | Slog.e(TAG, "Failing file: " + fileToString(taskFile)); |
Craig Mautner | e0129b3 | 2014-05-25 16:41:09 -0700 | [diff] [blame] | 500 | deleteFile = true; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 501 | } finally { |
Wale Ogunwale | 18795a2 | 2014-12-03 11:38:33 -0800 | [diff] [blame] | 502 | IoUtils.closeQuietly(reader); |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 503 | if (deleteFile) { |
| 504 | if (DEBUG) Slog.d(TAG, "Deleting file=" + taskFile.getName()); |
Craig Mautner | e0129b3 | 2014-05-25 16:41:09 -0700 | [diff] [blame] | 505 | taskFile.delete(); |
| 506 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 507 | } |
| 508 | } |
| 509 | |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 510 | if (!DEBUG) { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 511 | removeObsoleteFiles(recoveredTaskIds, userTasksDir.listFiles()); |
| 512 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 513 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 514 | // Fix up task affiliation from taskIds |
Craig Mautner | a228ae9 | 2014-07-09 05:44:55 -0700 | [diff] [blame] | 515 | for (int taskNdx = tasks.size() - 1; taskNdx >= 0; --taskNdx) { |
| 516 | final TaskRecord task = tasks.get(taskNdx); |
| 517 | task.setPrevAffiliate(taskIdToTask(task.mPrevAffiliateTaskId, tasks)); |
| 518 | task.setNextAffiliate(taskIdToTask(task.mNextAffiliateTaskId, tasks)); |
| 519 | } |
| 520 | |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 521 | Collections.sort(tasks, new Comparator<TaskRecord>() { |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 522 | @Override |
| 523 | public int compare(TaskRecord lhs, TaskRecord rhs) { |
Craig Mautner | 43e52ed | 2014-06-16 17:18:52 -0700 | [diff] [blame] | 524 | final long diff = rhs.mLastTimeMoved - lhs.mLastTimeMoved; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 525 | if (diff < 0) { |
| 526 | return -1; |
| 527 | } else if (diff > 0) { |
| 528 | return +1; |
| 529 | } else { |
| 530 | return 0; |
| 531 | } |
| 532 | } |
| 533 | }); |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 534 | return tasks; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 535 | } |
| 536 | |
Craig Mautner | e0129b3 | 2014-05-25 16:41:09 -0700 | [diff] [blame] | 537 | private static void removeObsoleteFiles(ArraySet<Integer> persistentTaskIds, File[] files) { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 538 | if (DEBUG) Slog.d(TAG, "removeObsoleteFiles: persistentTaskIds=" + persistentTaskIds + |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 539 | " files=" + files); |
Craig Mautner | a5badf0 | 2014-09-11 12:47:03 -0700 | [diff] [blame] | 540 | if (files == null) { |
Suprabh Shukla | dc4b80d | 2016-04-20 15:24:31 -0700 | [diff] [blame] | 541 | Slog.e(TAG, "File error accessing recents directory (directory doesn't exist?)."); |
Craig Mautner | a5badf0 | 2014-09-11 12:47:03 -0700 | [diff] [blame] | 542 | return; |
| 543 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 544 | for (int fileNdx = 0; fileNdx < files.length; ++fileNdx) { |
| 545 | File file = files[fileNdx]; |
| 546 | String filename = file.getName(); |
Craig Mautner | ffcfcaa | 2014-06-05 09:54:38 -0700 | [diff] [blame] | 547 | final int taskIdEnd = filename.indexOf('_'); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 548 | if (taskIdEnd > 0) { |
| 549 | final int taskId; |
| 550 | try { |
Narayan Kamath | a09b4d2 | 2016-04-15 18:32:45 +0100 | [diff] [blame] | 551 | taskId = Integer.parseInt(filename.substring(0, taskIdEnd)); |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 552 | if (DEBUG) Slog.d(TAG, "removeObsoleteFiles: Found taskId=" + taskId); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 553 | } catch (Exception e) { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 554 | Slog.wtf(TAG, "removeObsoleteFiles: Can't parse file=" + file.getName()); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 555 | file.delete(); |
| 556 | continue; |
| 557 | } |
| 558 | if (!persistentTaskIds.contains(taskId)) { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 559 | if (DEBUG) Slog.d(TAG, "removeObsoleteFiles: deleting file=" + file.getName()); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 560 | file.delete(); |
| 561 | } |
| 562 | } |
| 563 | } |
| 564 | } |
| 565 | |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 566 | private void writeTaskIdsFiles() { |
Suprabh Shukla | fd0bd4f | 2016-08-24 14:08:29 -0700 | [diff] [blame] | 567 | SparseArray<SparseBooleanArray> changedTaskIdsPerUser = new SparseArray<>(); |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 568 | synchronized (mService) { |
Suprabh Shukla | fd0bd4f | 2016-08-24 14:08:29 -0700 | [diff] [blame] | 569 | for (int userId : mRecentTasks.usersWithRecentsLoadedLocked()) { |
Winson Chung | 1dbc811 | 2017-09-28 18:05:31 -0700 | [diff] [blame] | 570 | SparseBooleanArray taskIdsToSave = mRecentTasks.getTaskIdsForUser(userId); |
Suprabh Shukla | fd0bd4f | 2016-08-24 14:08:29 -0700 | [diff] [blame] | 571 | SparseBooleanArray persistedIdsInFile = mTaskIdsInFile.get(userId); |
| 572 | if (persistedIdsInFile != null && persistedIdsInFile.equals(taskIdsToSave)) { |
| 573 | continue; |
| 574 | } else { |
| 575 | SparseBooleanArray taskIdsToSaveCopy = taskIdsToSave.clone(); |
| 576 | mTaskIdsInFile.put(userId, taskIdsToSaveCopy); |
| 577 | changedTaskIdsPerUser.put(userId, taskIdsToSaveCopy); |
| 578 | } |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 579 | } |
Suprabh Shukla | fd0bd4f | 2016-08-24 14:08:29 -0700 | [diff] [blame] | 580 | } |
| 581 | for (int i = 0; i < changedTaskIdsPerUser.size(); i++) { |
| 582 | writePersistedTaskIdsForUser(changedTaskIdsPerUser.valueAt(i), |
| 583 | changedTaskIdsPerUser.keyAt(i)); |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 584 | } |
| 585 | } |
| 586 | |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 587 | private void removeObsoleteFiles(ArraySet<Integer> persistentTaskIds) { |
Suprabh Shukla | 09a88f5 | 2015-12-02 14:36:31 -0800 | [diff] [blame] | 588 | int[] candidateUserIds; |
| 589 | synchronized (mService) { |
| 590 | // Remove only from directories of the users who have recents in memory synchronized |
| 591 | // with persistent storage. |
| 592 | candidateUserIds = mRecentTasks.usersWithRecentsLoadedLocked(); |
| 593 | } |
| 594 | for (int userId : candidateUserIds) { |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 595 | removeObsoleteFiles(persistentTaskIds, getUserImagesDir(userId).listFiles()); |
| 596 | removeObsoleteFiles(persistentTaskIds, getUserTasksDir(userId).listFiles()); |
| 597 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 598 | } |
| 599 | |
| 600 | static Bitmap restoreImage(String filename) { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 601 | if (DEBUG) Slog.d(TAG, "restoreImage: restoring " + filename); |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 602 | return BitmapFactory.decodeFile(filename); |
| 603 | } |
| 604 | |
Suprabh Shukla | f50b458 | 2016-02-23 17:44:22 -0800 | [diff] [blame] | 605 | private File getUserPersistedTaskIdsFile(int userId) { |
| 606 | File userTaskIdsDir = new File(mTaskIdsDir, String.valueOf(userId)); |
| 607 | if (!userTaskIdsDir.exists() && !userTaskIdsDir.mkdirs()) { |
| 608 | Slog.e(TAG, "Error while creating user directory: " + userTaskIdsDir); |
| 609 | } |
| 610 | return new File(userTaskIdsDir, PERSISTED_TASK_IDS_FILENAME); |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 611 | } |
| 612 | |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 613 | static File getUserTasksDir(int userId) { |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 614 | File userTasksDir = new File(Environment.getDataSystemCeDirectory(userId), TASKS_DIRNAME); |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 615 | |
| 616 | if (!userTasksDir.exists()) { |
| 617 | if (!userTasksDir.mkdir()) { |
| 618 | Slog.e(TAG, "Failure creating tasks directory for user " + userId + ": " |
| 619 | + userTasksDir); |
| 620 | } |
| 621 | } |
| 622 | return userTasksDir; |
| 623 | } |
| 624 | |
| 625 | static File getUserImagesDir(int userId) { |
Suprabh Shukla | dc4b80d | 2016-04-20 15:24:31 -0700 | [diff] [blame] | 626 | return new File(Environment.getDataSystemCeDirectory(userId), IMAGES_DIRNAME); |
| 627 | } |
Suprabh Shukla | 2359314 | 2015-11-03 17:31:15 -0800 | [diff] [blame] | 628 | |
Suprabh Shukla | dc4b80d | 2016-04-20 15:24:31 -0700 | [diff] [blame] | 629 | private static boolean createParentDirectory(String filePath) { |
| 630 | File parentDir = new File(filePath).getParentFile(); |
| 631 | return parentDir.exists() || parentDir.mkdirs(); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 632 | } |
| 633 | |
| 634 | private class LazyTaskWriterThread extends Thread { |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 635 | |
| 636 | LazyTaskWriterThread(String name) { |
| 637 | super(name); |
| 638 | } |
| 639 | |
| 640 | @Override |
| 641 | public void run() { |
Riley Andrews | f16c2e8 | 2015-06-02 18:24:48 -0700 | [diff] [blame] | 642 | Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND); |
Winson Chung | 1dbc811 | 2017-09-28 18:05:31 -0700 | [diff] [blame] | 643 | ArraySet<Integer> persistentTaskIds = new ArraySet<>(); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 644 | while (true) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 645 | // We can't lock mService while holding TaskPersister.this, but we don't want to |
| 646 | // call removeObsoleteFiles every time through the loop, only the last time before |
| 647 | // going to sleep. The risk is that we call removeObsoleteFiles() successively. |
| 648 | final boolean probablyDone; |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 649 | synchronized (TaskPersister.this) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 650 | probablyDone = mWriteQueue.isEmpty(); |
| 651 | } |
| 652 | if (probablyDone) { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 653 | if (DEBUG) Slog.d(TAG, "Looking for obsolete files."); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 654 | persistentTaskIds.clear(); |
| 655 | synchronized (mService) { |
Stefan Kuhne | e88d1e5 | 2015-05-18 10:33:45 -0700 | [diff] [blame] | 656 | if (DEBUG) Slog.d(TAG, "mRecents=" + mRecentTasks); |
Winson Chung | 1dbc811 | 2017-09-28 18:05:31 -0700 | [diff] [blame] | 657 | mRecentTasks.getPersistableTaskIds(persistentTaskIds); |
Jorim Jaggi | f9084ec | 2017-01-16 13:16:59 +0100 | [diff] [blame] | 658 | mService.mWindowManager.removeObsoleteTaskFiles(persistentTaskIds, |
| 659 | mRecentTasks.usersWithRecentsLoadedLocked()); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 660 | } |
| 661 | removeObsoleteFiles(persistentTaskIds); |
| 662 | } |
Suprabh Shukla | 4bccb46 | 2016-02-10 18:45:12 -0800 | [diff] [blame] | 663 | writeTaskIdsFiles(); |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 664 | |
Makoto Onuki | 62a93aa | 2017-08-08 10:24:59 -0700 | [diff] [blame] | 665 | processNextItem(); |
| 666 | } |
| 667 | } |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 668 | |
Makoto Onuki | 62a93aa | 2017-08-08 10:24:59 -0700 | [diff] [blame] | 669 | private void processNextItem() { |
| 670 | // This part is extracted into a method so that the GC can clearly see the end of the |
| 671 | // scope of the variable 'item'. If this part was in the loop above, the last item |
| 672 | // it processed would always "leak". |
| 673 | // See https://b.corp.google.com/issues/64438652#comment7 |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 674 | |
Makoto Onuki | 62a93aa | 2017-08-08 10:24:59 -0700 | [diff] [blame] | 675 | // If mNextWriteTime, then don't delay between each call to saveToXml(). |
| 676 | final WriteQueueItem item; |
| 677 | synchronized (TaskPersister.this) { |
| 678 | if (mNextWriteTime != FLUSH_QUEUE) { |
| 679 | // The next write we don't have to wait so long. |
| 680 | mNextWriteTime = SystemClock.uptimeMillis() + INTER_WRITE_DELAY_MS; |
| 681 | if (DEBUG) Slog.d(TAG, "Next write time may be in " + |
| 682 | INTER_WRITE_DELAY_MS + " msec. (" + mNextWriteTime + ")"); |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 683 | } |
| 684 | |
Makoto Onuki | 62a93aa | 2017-08-08 10:24:59 -0700 | [diff] [blame] | 685 | while (mWriteQueue.isEmpty()) { |
| 686 | if (mNextWriteTime != 0) { |
| 687 | mNextWriteTime = 0; // idle. |
| 688 | TaskPersister.this.notifyAll(); // wake up flush() if needed. |
Suprabh Shukla | dc4b80d | 2016-04-20 15:24:31 -0700 | [diff] [blame] | 689 | } |
Craig Mautner | c0ffce5 | 2014-07-01 12:38:52 -0700 | [diff] [blame] | 690 | try { |
Makoto Onuki | 62a93aa | 2017-08-08 10:24:59 -0700 | [diff] [blame] | 691 | if (DEBUG) Slog.d(TAG, "LazyTaskWriter: waiting indefinitely."); |
| 692 | TaskPersister.this.wait(); |
| 693 | } catch (InterruptedException e) { |
Craig Mautner | c0ffce5 | 2014-07-01 12:38:52 -0700 | [diff] [blame] | 694 | } |
Makoto Onuki | 62a93aa | 2017-08-08 10:24:59 -0700 | [diff] [blame] | 695 | // Invariant: mNextWriteTime is either FLUSH_QUEUE or PRE_WRITE_DELAY_MS |
| 696 | // from now. |
| 697 | } |
| 698 | item = mWriteQueue.remove(0); |
| 699 | |
| 700 | long now = SystemClock.uptimeMillis(); |
| 701 | if (DEBUG) Slog.d(TAG, "LazyTaskWriter: now=" + now + " mNextWriteTime=" + |
| 702 | mNextWriteTime + " mWriteQueue.size=" + mWriteQueue.size()); |
| 703 | while (now < mNextWriteTime) { |
| 704 | try { |
| 705 | if (DEBUG) Slog.d(TAG, "LazyTaskWriter: waiting " + |
| 706 | (mNextWriteTime - now)); |
| 707 | TaskPersister.this.wait(mNextWriteTime - now); |
| 708 | } catch (InterruptedException e) { |
Dianne Hackborn | 852975d | 2014-08-22 17:42:43 -0700 | [diff] [blame] | 709 | } |
Makoto Onuki | 62a93aa | 2017-08-08 10:24:59 -0700 | [diff] [blame] | 710 | now = SystemClock.uptimeMillis(); |
| 711 | } |
| 712 | |
| 713 | // Got something to do. |
| 714 | } |
| 715 | |
| 716 | if (item instanceof ImageWriteQueueItem) { |
| 717 | ImageWriteQueueItem imageWriteQueueItem = (ImageWriteQueueItem) item; |
| 718 | final String filePath = imageWriteQueueItem.mFilePath; |
| 719 | if (!createParentDirectory(filePath)) { |
| 720 | Slog.e(TAG, "Error while creating images directory for file: " + filePath); |
| 721 | return; |
| 722 | } |
| 723 | final Bitmap bitmap = imageWriteQueueItem.mImage; |
| 724 | if (DEBUG) Slog.d(TAG, "writing bitmap: filename=" + filePath); |
| 725 | FileOutputStream imageFile = null; |
| 726 | try { |
| 727 | imageFile = new FileOutputStream(new File(filePath)); |
| 728 | bitmap.compress(Bitmap.CompressFormat.PNG, 100, imageFile); |
| 729 | } catch (Exception e) { |
| 730 | Slog.e(TAG, "saveImage: unable to save " + filePath, e); |
| 731 | } finally { |
| 732 | IoUtils.closeQuietly(imageFile); |
| 733 | } |
| 734 | } else if (item instanceof TaskWriteQueueItem) { |
| 735 | // Write out one task. |
| 736 | StringWriter stringWriter = null; |
| 737 | TaskRecord task = ((TaskWriteQueueItem) item).mTask; |
| 738 | if (DEBUG) Slog.d(TAG, "Writing task=" + task); |
| 739 | synchronized (mService) { |
| 740 | if (task.inRecents) { |
| 741 | // Still there. |
Dianne Hackborn | 852975d | 2014-08-22 17:42:43 -0700 | [diff] [blame] | 742 | try { |
Makoto Onuki | 62a93aa | 2017-08-08 10:24:59 -0700 | [diff] [blame] | 743 | if (DEBUG) Slog.d(TAG, "Saving task=" + task); |
| 744 | stringWriter = saveToXml(task); |
Dianne Hackborn | 852975d | 2014-08-22 17:42:43 -0700 | [diff] [blame] | 745 | } catch (IOException e) { |
Makoto Onuki | 62a93aa | 2017-08-08 10:24:59 -0700 | [diff] [blame] | 746 | } catch (XmlPullParserException e) { |
Craig Mautner | f4f8bb7 | 2014-07-29 10:41:40 -0700 | [diff] [blame] | 747 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 748 | } |
| 749 | } |
Makoto Onuki | 62a93aa | 2017-08-08 10:24:59 -0700 | [diff] [blame] | 750 | if (stringWriter != null) { |
| 751 | // Write out xml file while not holding mService lock. |
| 752 | FileOutputStream file = null; |
| 753 | AtomicFile atomicFile = null; |
| 754 | try { |
| 755 | atomicFile = new AtomicFile(new File( |
| 756 | getUserTasksDir(task.userId), |
| 757 | String.valueOf(task.taskId) + TASK_FILENAME_SUFFIX)); |
| 758 | file = atomicFile.startWrite(); |
| 759 | file.write(stringWriter.toString().getBytes()); |
| 760 | file.write('\n'); |
| 761 | atomicFile.finishWrite(file); |
| 762 | } catch (IOException e) { |
| 763 | if (file != null) { |
| 764 | atomicFile.failWrite(file); |
| 765 | } |
| 766 | Slog.e(TAG, |
| 767 | "Unable to open " + atomicFile + " for persisting. " + e); |
| 768 | } |
| 769 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 770 | } |
| 771 | } |
| 772 | } |
Craig Mautner | 21d24a2 | 2014-04-23 11:45:37 -0700 | [diff] [blame] | 773 | } |