SystemServer.java revision bde75706592c77379fb6546283e733abaca6fe04
1/* 2 * Copyright (C) 2006 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 17package com.android.server; 18 19import com.android.server.am.ActivityManagerService; 20import com.android.internal.os.BinderInternal; 21import com.android.internal.os.SamplingProfilerIntegration; 22 23import dalvik.system.VMRuntime; 24import dalvik.system.Zygote; 25 26import android.accounts.AccountManagerService; 27import android.app.ActivityManagerNative; 28import android.bluetooth.BluetoothAdapter; 29import android.content.ContentResolver; 30import android.content.ContentService; 31import android.content.Context; 32import android.content.pm.IPackageManager; 33import android.database.ContentObserver; 34import android.media.AudioService; 35import android.os.Looper; 36import android.os.RemoteException; 37import android.os.ServiceManager; 38import android.os.SystemClock; 39import android.os.SystemProperties; 40import android.provider.Settings; 41import android.server.BluetoothA2dpService; 42import android.server.BluetoothService; 43import android.server.search.SearchManagerService; 44import android.util.EventLog; 45import android.util.Slog; 46 47import java.io.File; 48import java.util.Timer; 49import java.util.TimerTask; 50 51class ServerThread extends Thread { 52 private static final String TAG = "SystemServer"; 53 54 ContentResolver mContentResolver; 55 56 private class AdbSettingsObserver extends ContentObserver { 57 public AdbSettingsObserver() { 58 super(null); 59 } 60 @Override 61 public void onChange(boolean selfChange) { 62 boolean enableAdb = (Settings.Secure.getInt(mContentResolver, 63 Settings.Secure.ADB_ENABLED, 0) > 0); 64 // setting this secure property will start or stop adbd 65 SystemProperties.set("persist.service.adb.enable", enableAdb ? "1" : "0"); 66 } 67 } 68 69 @Override 70 public void run() { 71 EventLog.writeEvent(EventLogTags.BOOT_PROGRESS_SYSTEM_RUN, 72 SystemClock.uptimeMillis()); 73 74 Looper.prepare(); 75 76 android.os.Process.setThreadPriority( 77 android.os.Process.THREAD_PRIORITY_FOREGROUND); 78 79 BinderInternal.disableBackgroundScheduling(true); 80 81 String factoryTestStr = SystemProperties.get("ro.factorytest"); 82 int factoryTest = "".equals(factoryTestStr) ? SystemServer.FACTORY_TEST_OFF 83 : Integer.parseInt(factoryTestStr); 84 85 LightsService lights = null; 86 PowerManagerService power = null; 87 BatteryService battery = null; 88 ConnectivityService connectivity = null; 89 IPackageManager pm = null; 90 Context context = null; 91 WindowManagerService wm = null; 92 BluetoothService bluetooth = null; 93 BluetoothA2dpService bluetoothA2dp = null; 94 HeadsetObserver headset = null; 95 DockObserver dock = null; 96 UiModeManagerService uiMode = null; 97 RecognitionManagerService recognition = null; 98 ThrottleService throttle = null; 99 100 // Critical services... 101 try { 102 Slog.i(TAG, "Entropy Service"); 103 ServiceManager.addService("entropy", new EntropyService()); 104 105 Slog.i(TAG, "Power Manager"); 106 power = new PowerManagerService(); 107 ServiceManager.addService(Context.POWER_SERVICE, power); 108 109 Slog.i(TAG, "Activity Manager"); 110 context = ActivityManagerService.main(factoryTest); 111 112 Slog.i(TAG, "Telephony Registry"); 113 ServiceManager.addService("telephony.registry", new TelephonyRegistry(context)); 114 115 AttributeCache.init(context); 116 117 Slog.i(TAG, "Package Manager"); 118 pm = PackageManagerService.main(context, 119 factoryTest != SystemServer.FACTORY_TEST_OFF); 120 121 ActivityManagerService.setSystemProcess(); 122 123 mContentResolver = context.getContentResolver(); 124 125 // The AccountManager must come before the ContentService 126 try { 127 Slog.i(TAG, "Account Manager"); 128 ServiceManager.addService(Context.ACCOUNT_SERVICE, 129 new AccountManagerService(context)); 130 } catch (Throwable e) { 131 Slog.e(TAG, "Failure starting Account Manager", e); 132 } 133 134 Slog.i(TAG, "Content Manager"); 135 ContentService.main(context, 136 factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL); 137 138 Slog.i(TAG, "System Content Providers"); 139 ActivityManagerService.installSystemProviders(); 140 141 Slog.i(TAG, "Battery Service"); 142 battery = new BatteryService(context); 143 ServiceManager.addService("battery", battery); 144 145 Slog.i(TAG, "Lights Service"); 146 lights = new LightsService(context); 147 148 Slog.i(TAG, "Vibrator Service"); 149 ServiceManager.addService("vibrator", new VibratorService(context)); 150 151 // only initialize the power service after we have started the 152 // lights service, content providers and the battery service. 153 power.init(context, lights, ActivityManagerService.getDefault(), battery); 154 155 Slog.i(TAG, "Alarm Manager"); 156 AlarmManagerService alarm = new AlarmManagerService(context); 157 ServiceManager.addService(Context.ALARM_SERVICE, alarm); 158 159 Slog.i(TAG, "Init Watchdog"); 160 Watchdog.getInstance().init(context, battery, power, alarm, 161 ActivityManagerService.self()); 162 163 // Sensor Service is needed by Window Manager, so this goes first 164 Slog.i(TAG, "Sensor Service"); 165 ServiceManager.addService(Context.SENSOR_SERVICE, new SensorService(context)); 166 167 Slog.i(TAG, "Window Manager"); 168 wm = WindowManagerService.main(context, power, 169 factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL); 170 ServiceManager.addService(Context.WINDOW_SERVICE, wm); 171 172 ((ActivityManagerService)ServiceManager.getService("activity")) 173 .setWindowManager(wm); 174 175 // Skip Bluetooth if we have an emulator kernel 176 // TODO: Use a more reliable check to see if this product should 177 // support Bluetooth - see bug 988521 178 if (SystemProperties.get("ro.kernel.qemu").equals("1")) { 179 Slog.i(TAG, "Registering null Bluetooth Service (emulator)"); 180 ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, null); 181 } else if (factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL) { 182 Slog.i(TAG, "Registering null Bluetooth Service (factory test)"); 183 ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, null); 184 } else { 185 Slog.i(TAG, "Bluetooth Service"); 186 bluetooth = new BluetoothService(context); 187 ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, bluetooth); 188 bluetooth.initAfterRegistration(); 189 bluetoothA2dp = new BluetoothA2dpService(context, bluetooth); 190 ServiceManager.addService(BluetoothA2dpService.BLUETOOTH_A2DP_SERVICE, 191 bluetoothA2dp); 192 193 int bluetoothOn = Settings.Secure.getInt(mContentResolver, 194 Settings.Secure.BLUETOOTH_ON, 0); 195 if (bluetoothOn > 0) { 196 bluetooth.enable(); 197 } 198 } 199 200 } catch (RuntimeException e) { 201 Slog.e("System", "Failure starting core service", e); 202 } 203 204 DevicePolicyManagerService devicePolicy = null; 205 StatusBarManagerService statusBar = null; 206 InputMethodManagerService imm = null; 207 AppWidgetService appWidget = null; 208 NotificationManagerService notification = null; 209 WallpaperManagerService wallpaper = null; 210 LocationManagerService location = null; 211 212 if (factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL) { 213 try { 214 Slog.i(TAG, "Device Policy"); 215 devicePolicy = new DevicePolicyManagerService(context); 216 ServiceManager.addService(Context.DEVICE_POLICY_SERVICE, devicePolicy); 217 } catch (Throwable e) { 218 Slog.e(TAG, "Failure starting DevicePolicyService", e); 219 } 220 221 try { 222 Slog.i(TAG, "Status Bar"); 223 statusBar = new StatusBarManagerService(context); 224 ServiceManager.addService(Context.STATUS_BAR_SERVICE, statusBar); 225 } catch (Throwable e) { 226 Slog.e(TAG, "Failure starting StatusBarManagerService", e); 227 } 228 229 try { 230 Slog.i(TAG, "Clipboard Service"); 231 ServiceManager.addService(Context.CLIPBOARD_SERVICE, 232 new ClipboardService(context)); 233 } catch (Throwable e) { 234 Slog.e(TAG, "Failure starting Clipboard Service", e); 235 } 236 237 try { 238 Slog.i(TAG, "Input Method Service"); 239 imm = new InputMethodManagerService(context, statusBar); 240 ServiceManager.addService(Context.INPUT_METHOD_SERVICE, imm); 241 } catch (Throwable e) { 242 Slog.e(TAG, "Failure starting Input Manager Service", e); 243 } 244 245 try { 246 Slog.i(TAG, "NetStat Service"); 247 ServiceManager.addService("netstat", new NetStatService(context)); 248 } catch (Throwable e) { 249 Slog.e(TAG, "Failure starting NetStat Service", e); 250 } 251 252 try { 253 Slog.i(TAG, "NetworkManagement Service"); 254 ServiceManager.addService( 255 Context.NETWORKMANAGEMENT_SERVICE, new NetworkManagementService(context)); 256 } catch (Throwable e) { 257 Slog.e(TAG, "Failure starting NetworkManagement Service", e); 258 } 259 260 try { 261 Slog.i(TAG, "Connectivity Service"); 262 connectivity = ConnectivityService.getInstance(context); 263 ServiceManager.addService(Context.CONNECTIVITY_SERVICE, connectivity); 264 } catch (Throwable e) { 265 Slog.e(TAG, "Failure starting Connectivity Service", e); 266 } 267 268 try { 269 Slog.i(TAG, "Throttle Service"); 270 throttle = new ThrottleService(context); 271 ServiceManager.addService( 272 Context.THROTTLE_SERVICE, throttle); 273 } catch (Throwable e) { 274 Slog.e(TAG, "Failure starting ThrottleService", e); 275 } 276 277 try { 278 Slog.i(TAG, "Accessibility Manager"); 279 ServiceManager.addService(Context.ACCESSIBILITY_SERVICE, 280 new AccessibilityManagerService(context)); 281 } catch (Throwable e) { 282 Slog.e(TAG, "Failure starting Accessibility Manager", e); 283 } 284 285 try { 286 /* 287 * NotificationManagerService is dependant on MountService, 288 * (for media / usb notifications) so we must start MountService first. 289 */ 290 Slog.i(TAG, "Mount Service"); 291 ServiceManager.addService("mount", new MountService(context)); 292 } catch (Throwable e) { 293 Slog.e(TAG, "Failure starting Mount Service", e); 294 } 295 296 try { 297 Slog.i(TAG, "Notification Manager"); 298 notification = new NotificationManagerService(context, statusBar, lights); 299 ServiceManager.addService(Context.NOTIFICATION_SERVICE, notification); 300 } catch (Throwable e) { 301 Slog.e(TAG, "Failure starting Notification Manager", e); 302 } 303 304 try { 305 Slog.i(TAG, "Device Storage Monitor"); 306 ServiceManager.addService(DeviceStorageMonitorService.SERVICE, 307 new DeviceStorageMonitorService(context)); 308 } catch (Throwable e) { 309 Slog.e(TAG, "Failure starting DeviceStorageMonitor service", e); 310 } 311 312 try { 313 Slog.i(TAG, "Location Manager"); 314 location = new LocationManagerService(context); 315 ServiceManager.addService(Context.LOCATION_SERVICE, location); 316 } catch (Throwable e) { 317 Slog.e(TAG, "Failure starting Location Manager", e); 318 } 319 320 try { 321 Slog.i(TAG, "Search Service"); 322 ServiceManager.addService(Context.SEARCH_SERVICE, 323 new SearchManagerService(context)); 324 } catch (Throwable e) { 325 Slog.e(TAG, "Failure starting Search Service", e); 326 } 327 328 try { 329 Slog.i(TAG, "DropBox Service"); 330 ServiceManager.addService(Context.DROPBOX_SERVICE, 331 new DropBoxManagerService(context, new File("/data/system/dropbox"))); 332 } catch (Throwable e) { 333 Slog.e(TAG, "Failure starting DropBoxManagerService", e); 334 } 335 336 try { 337 Slog.i(TAG, "Wallpaper Service"); 338 wallpaper = new WallpaperManagerService(context); 339 ServiceManager.addService(Context.WALLPAPER_SERVICE, wallpaper); 340 } catch (Throwable e) { 341 Slog.e(TAG, "Failure starting Wallpaper Service", e); 342 } 343 344 try { 345 Slog.i(TAG, "Audio Service"); 346 ServiceManager.addService(Context.AUDIO_SERVICE, new AudioService(context)); 347 } catch (Throwable e) { 348 Slog.e(TAG, "Failure starting Audio Service", e); 349 } 350 351 try { 352 Slog.i(TAG, "Headset Observer"); 353 // Listen for wired headset changes 354 headset = new HeadsetObserver(context); 355 } catch (Throwable e) { 356 Slog.e(TAG, "Failure starting HeadsetObserver", e); 357 } 358 359 try { 360 Slog.i(TAG, "Dock Observer"); 361 // Listen for dock station changes 362 dock = new DockObserver(context, power); 363 } catch (Throwable e) { 364 Slog.e(TAG, "Failure starting DockObserver", e); 365 } 366 367 try { 368 Slog.i(TAG, "UI Mode Manager Service"); 369 // Listen for dock station changes 370 uiMode = new UiModeManagerService(context); 371 } catch (Throwable e) { 372 Slog.e(TAG, "Failure starting UiModeManagerService", e); 373 } 374 375 try { 376 Slog.i(TAG, "Backup Service"); 377 ServiceManager.addService(Context.BACKUP_SERVICE, 378 new BackupManagerService(context)); 379 } catch (Throwable e) { 380 Slog.e(TAG, "Failure starting Backup Service", e); 381 } 382 383 try { 384 Slog.i(TAG, "AppWidget Service"); 385 appWidget = new AppWidgetService(context); 386 ServiceManager.addService(Context.APPWIDGET_SERVICE, appWidget); 387 } catch (Throwable e) { 388 Slog.e(TAG, "Failure starting AppWidget Service", e); 389 } 390 391 try { 392 Slog.i(TAG, "Recognition Service"); 393 recognition = new RecognitionManagerService(context); 394 } catch (Throwable e) { 395 Slog.e(TAG, "Failure starting Recognition Service", e); 396 } 397 398 try { 399 Slog.i(TAG, "DiskStats Service"); 400 ServiceManager.addService("diskstats", new DiskStatsService(context)); 401 } catch (Throwable e) { 402 Slog.e(TAG, "Failure starting DiskStats Service", e); 403 } 404 405 try { 406 // need to add this service even if SamplingProfilerIntegration.isEnabled() 407 // is false, because it is this service that detects system property change and 408 // turns on SamplingProfilerIntegration. Plus, when sampling profiler doesn't work, 409 // there is little overhead for running this service. 410 Slog.i(TAG, "SamplingProfiler Service"); 411 ServiceManager.addService("samplingprofiler", 412 new SamplingProfilerService(context)); 413 } catch (Throwable e) { 414 Slog.e(TAG, "Failure starting SamplingProfiler Service", e); 415 } 416 } 417 418 // make sure the ADB_ENABLED setting value matches the secure property value 419 Settings.Secure.putInt(mContentResolver, Settings.Secure.ADB_ENABLED, 420 "1".equals(SystemProperties.get("persist.service.adb.enable")) ? 1 : 0); 421 422 // register observer to listen for settings changes 423 mContentResolver.registerContentObserver(Settings.Secure.getUriFor(Settings.Secure.ADB_ENABLED), 424 false, new AdbSettingsObserver()); 425 426 // Before things start rolling, be sure we have decided whether 427 // we are in safe mode. 428 final boolean safeMode = wm.detectSafeMode(); 429 if (safeMode) { 430 try { 431 ActivityManagerNative.getDefault().enterSafeMode(); 432 // Post the safe mode state in the Zygote class 433 Zygote.systemInSafeMode = true; 434 // Disable the JIT for the system_server process 435 VMRuntime.getRuntime().disableJitCompilation(); 436 } catch (RemoteException e) { 437 } 438 } else { 439 // Enable the JIT for the system_server process 440 VMRuntime.getRuntime().startJitCompilation(); 441 } 442 443 // It is now time to start up the app processes... 444 445 if (devicePolicy != null) { 446 devicePolicy.systemReady(); 447 } 448 449 if (notification != null) { 450 notification.systemReady(); 451 } 452 453 if (statusBar != null) { 454 statusBar.systemReady(); 455 } 456 wm.systemReady(); 457 power.systemReady(); 458 try { 459 pm.systemReady(); 460 } catch (RemoteException e) { 461 } 462 463 // These are needed to propagate to the runnable below. 464 final StatusBarManagerService statusBarF = statusBar; 465 final BatteryService batteryF = battery; 466 final ConnectivityService connectivityF = connectivity; 467 final DockObserver dockF = dock; 468 final ThrottleService throttleF = throttle; 469 final UiModeManagerService uiModeF = uiMode; 470 final AppWidgetService appWidgetF = appWidget; 471 final WallpaperManagerService wallpaperF = wallpaper; 472 final InputMethodManagerService immF = imm; 473 final RecognitionManagerService recognitionF = recognition; 474 final LocationManagerService locationF = location; 475 476 // We now tell the activity manager it is okay to run third party 477 // code. It will call back into us once it has gotten to the state 478 // where third party code can really run (but before it has actually 479 // started launching the initial applications), for us to complete our 480 // initialization. 481 ((ActivityManagerService)ActivityManagerNative.getDefault()) 482 .systemReady(new Runnable() { 483 public void run() { 484 Slog.i(TAG, "Making services ready"); 485 486 if (statusBarF != null) statusBarF.systemReady2(); 487 if (batteryF != null) batteryF.systemReady(); 488 if (connectivityF != null) connectivityF.systemReady(); 489 if (dockF != null) dockF.systemReady(); 490 if (uiModeF != null) uiModeF.systemReady(); 491 if (recognitionF != null) recognitionF.systemReady(); 492 Watchdog.getInstance().start(); 493 494 // It is now okay to let the various system services start their 495 // third party code... 496 497 if (appWidgetF != null) appWidgetF.systemReady(safeMode); 498 if (wallpaperF != null) wallpaperF.systemReady(); 499 if (immF != null) immF.systemReady(); 500 if (locationF != null) locationF.systemReady(); 501 if (throttleF != null) throttleF.systemReady(); 502 } 503 }); 504 505 Looper.loop(); 506 Slog.d(TAG, "System ServerThread is exiting!"); 507 } 508} 509 510public class SystemServer { 511 private static final String TAG = "SystemServer"; 512 513 public static final int FACTORY_TEST_OFF = 0; 514 public static final int FACTORY_TEST_LOW_LEVEL = 1; 515 public static final int FACTORY_TEST_HIGH_LEVEL = 2; 516 517 static Timer timer; 518 static final long SNAPSHOT_INTERVAL = 60 * 60 * 1000; // 1hr 519 520 /** 521 * This method is called from Zygote to initialize the system. This will cause the native 522 * services (SurfaceFlinger, AudioFlinger, etc..) to be started. After that it will call back 523 * up into init2() to start the Android services. 524 */ 525 native public static void init1(String[] args); 526 527 public static void main(String[] args) { 528 if (SamplingProfilerIntegration.isEnabled()) { 529 SamplingProfilerIntegration.start(); 530 timer = new Timer(); 531 timer.schedule(new TimerTask() { 532 @Override 533 public void run() { 534 SamplingProfilerIntegration.writeSnapshot("system_server", null); 535 } 536 }, SNAPSHOT_INTERVAL, SNAPSHOT_INTERVAL); 537 } 538 539 // The system server has to run all of the time, so it needs to be 540 // as efficient as possible with its memory usage. 541 VMRuntime.getRuntime().setTargetHeapUtilization(0.8f); 542 543 System.loadLibrary("android_servers"); 544 init1(args); 545 } 546 547 public static final void init2() { 548 Slog.i(TAG, "Entered the Android system server!"); 549 Thread thr = new ServerThread(); 550 thr.setName("android.server.ServerThread"); 551 thr.start(); 552 } 553} 554