SystemServer.java revision fb3a35e586c08c74a8f9a0c332c9e40753c095c5
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.internal.os.BinderInternal; 20import com.android.internal.os.SamplingProfilerIntegration; 21import com.android.server.am.ActivityManagerService; 22import com.android.server.status.StatusBarManagerService; 23 24import dalvik.system.VMRuntime; 25import dalvik.system.Zygote; 26 27import android.accounts.AccountManagerService; 28import android.app.ActivityManagerNative; 29import android.bluetooth.BluetoothAdapter; 30import android.content.ContentResolver; 31import android.content.ContentService; 32import android.content.Context; 33import android.content.pm.IPackageManager; 34import android.database.ContentObserver; 35import android.media.AudioService; 36import android.os.Looper; 37import android.os.RemoteException; 38import android.os.ServiceManager; 39import android.os.SystemClock; 40import android.os.SystemProperties; 41import android.provider.Settings; 42import android.server.BluetoothA2dpService; 43import android.server.BluetoothService; 44import android.server.search.SearchManagerService; 45import android.util.EventLog; 46import android.util.Slog; 47 48import java.io.File; 49import java.util.Timer; 50import java.util.TimerTask; 51 52class ServerThread extends Thread { 53 private static final String TAG = "SystemServer"; 54 55 ContentResolver mContentResolver; 56 57 private class AdbSettingsObserver extends ContentObserver { 58 public AdbSettingsObserver() { 59 super(null); 60 } 61 @Override 62 public void onChange(boolean selfChange) { 63 boolean enableAdb = (Settings.Secure.getInt(mContentResolver, 64 Settings.Secure.ADB_ENABLED, 0) > 0); 65 // setting this secure property will start or stop adbd 66 SystemProperties.set("persist.service.adb.enable", enableAdb ? "1" : "0"); 67 } 68 } 69 70 @Override 71 public void run() { 72 EventLog.writeEvent(EventLogTags.BOOT_PROGRESS_SYSTEM_RUN, 73 SystemClock.uptimeMillis()); 74 75 Looper.prepare(); 76 77 android.os.Process.setThreadPriority( 78 android.os.Process.THREAD_PRIORITY_FOREGROUND); 79 80 BinderInternal.disableBackgroundScheduling(true); 81 82 String factoryTestStr = SystemProperties.get("ro.factorytest"); 83 int factoryTest = "".equals(factoryTestStr) ? SystemServer.FACTORY_TEST_OFF 84 : Integer.parseInt(factoryTestStr); 85 86 LightsService lights = null; 87 PowerManagerService power = null; 88 BatteryService battery = null; 89 ConnectivityService connectivity = null; 90 IPackageManager pm = null; 91 Context context = null; 92 WindowManagerService wm = null; 93 BluetoothService bluetooth = null; 94 BluetoothA2dpService bluetoothA2dp = null; 95 HeadsetObserver headset = null; 96 DockObserver dock = null; 97 UiModeManagerService uiMode = null; 98 RecognitionManagerService recognition = null; 99 ThrottleService throttle = null; 100 101 // Critical services... 102 try { 103 Slog.i(TAG, "Entropy Service"); 104 ServiceManager.addService("entropy", new EntropyService()); 105 106 Slog.i(TAG, "Power Manager"); 107 power = new PowerManagerService(); 108 ServiceManager.addService(Context.POWER_SERVICE, power); 109 110 Slog.i(TAG, "Activity Manager"); 111 context = ActivityManagerService.main(factoryTest); 112 113 Slog.i(TAG, "Telephony Registry"); 114 ServiceManager.addService("telephony.registry", new TelephonyRegistry(context)); 115 116 AttributeCache.init(context); 117 118 Slog.i(TAG, "Package Manager"); 119 pm = PackageManagerService.main(context, 120 factoryTest != SystemServer.FACTORY_TEST_OFF); 121 122 ActivityManagerService.setSystemProcess(); 123 124 mContentResolver = context.getContentResolver(); 125 126 // The AccountManager must come before the ContentService 127 try { 128 Slog.i(TAG, "Account Manager"); 129 ServiceManager.addService(Context.ACCOUNT_SERVICE, 130 new AccountManagerService(context)); 131 } catch (Throwable e) { 132 Slog.e(TAG, "Failure starting Account Manager", e); 133 } 134 135 Slog.i(TAG, "Content Manager"); 136 ContentService.main(context, 137 factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL); 138 139 Slog.i(TAG, "System Content Providers"); 140 ActivityManagerService.installSystemProviders(); 141 142 Slog.i(TAG, "Battery Service"); 143 battery = new BatteryService(context); 144 ServiceManager.addService("battery", battery); 145 146 Slog.i(TAG, "Lights Service"); 147 lights = new LightsService(context); 148 149 Slog.i(TAG, "Vibrator Service"); 150 ServiceManager.addService("vibrator", new VibratorService(context)); 151 152 // only initialize the power service after we have started the 153 // lights service, content providers and the battery service. 154 power.init(context, lights, ActivityManagerService.getDefault(), battery); 155 156 Slog.i(TAG, "Alarm Manager"); 157 AlarmManagerService alarm = new AlarmManagerService(context); 158 ServiceManager.addService(Context.ALARM_SERVICE, alarm); 159 160 Slog.i(TAG, "Init Watchdog"); 161 Watchdog.getInstance().init(context, battery, power, alarm, 162 ActivityManagerService.self()); 163 164 // Sensor Service is needed by Window Manager, so this goes first 165 Slog.i(TAG, "Sensor Service"); 166 ServiceManager.addService(Context.SENSOR_SERVICE, new SensorService(context)); 167 168 Slog.i(TAG, "Window Manager"); 169 wm = WindowManagerService.main(context, power, 170 factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL); 171 ServiceManager.addService(Context.WINDOW_SERVICE, wm); 172 173 ((ActivityManagerService)ServiceManager.getService("activity")) 174 .setWindowManager(wm); 175 176 // Skip Bluetooth if we have an emulator kernel 177 // TODO: Use a more reliable check to see if this product should 178 // support Bluetooth - see bug 988521 179 if (SystemProperties.get("ro.kernel.qemu").equals("1")) { 180 Slog.i(TAG, "Registering null Bluetooth Service (emulator)"); 181 ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, null); 182 } else if (factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL) { 183 Slog.i(TAG, "Registering null Bluetooth Service (factory test)"); 184 ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, null); 185 } else { 186 Slog.i(TAG, "Bluetooth Service"); 187 bluetooth = new BluetoothService(context); 188 ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, bluetooth); 189 bluetooth.initAfterRegistration(); 190 bluetoothA2dp = new BluetoothA2dpService(context, bluetooth); 191 ServiceManager.addService(BluetoothA2dpService.BLUETOOTH_A2DP_SERVICE, 192 bluetoothA2dp); 193 194 int bluetoothOn = Settings.Secure.getInt(mContentResolver, 195 Settings.Secure.BLUETOOTH_ON, 0); 196 if (bluetoothOn > 0) { 197 bluetooth.enable(); 198 } 199 } 200 201 } catch (RuntimeException e) { 202 Slog.e("System", "Failure starting core service", e); 203 } 204 205 DevicePolicyManagerService devicePolicy = null; 206 StatusBarManagerService statusBar = null; 207 InputMethodManagerService imm = null; 208 AppWidgetService appWidget = null; 209 NotificationManagerService notification = null; 210 WallpaperManagerService wallpaper = null; 211 LocationManagerService location = null; 212 213 if (factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL) { 214 try { 215 Slog.i(TAG, "Device Policy"); 216 devicePolicy = new DevicePolicyManagerService(context); 217 ServiceManager.addService(Context.DEVICE_POLICY_SERVICE, devicePolicy); 218 } catch (Throwable e) { 219 Slog.e(TAG, "Failure starting DevicePolicyService", e); 220 } 221 222 try { 223 Slog.i(TAG, "Status Bar"); 224 statusBar = new StatusBarManagerService(context); 225 ServiceManager.addService(Context.STATUS_BAR_SERVICE, statusBar); 226 } catch (Throwable e) { 227 Slog.e(TAG, "Failure starting StatusBarManagerService", e); 228 } 229 230 try { 231 Slog.i(TAG, "Clipboard Service"); 232 ServiceManager.addService(Context.CLIPBOARD_SERVICE, 233 new ClipboardService(context)); 234 } catch (Throwable e) { 235 Slog.e(TAG, "Failure starting Clipboard Service", e); 236 } 237 238 try { 239 Slog.i(TAG, "Input Method Service"); 240 imm = new InputMethodManagerService(context, statusBar); 241 ServiceManager.addService(Context.INPUT_METHOD_SERVICE, imm); 242 } catch (Throwable e) { 243 Slog.e(TAG, "Failure starting Input Manager Service", e); 244 } 245 246 try { 247 Slog.i(TAG, "NetStat Service"); 248 ServiceManager.addService("netstat", new NetStatService(context)); 249 } catch (Throwable e) { 250 Slog.e(TAG, "Failure starting NetStat Service", e); 251 } 252 253 try { 254 Slog.i(TAG, "NetworkManagement Service"); 255 ServiceManager.addService( 256 Context.NETWORKMANAGEMENT_SERVICE, new NetworkManagementService(context)); 257 } catch (Throwable e) { 258 Slog.e(TAG, "Failure starting NetworkManagement Service", e); 259 } 260 261 try { 262 Slog.i(TAG, "Connectivity Service"); 263 connectivity = ConnectivityService.getInstance(context); 264 ServiceManager.addService(Context.CONNECTIVITY_SERVICE, connectivity); 265 } catch (Throwable e) { 266 Slog.e(TAG, "Failure starting Connectivity Service", e); 267 } 268 269 try { 270 Slog.i(TAG, "Throttle Service"); 271 throttle = new ThrottleService(context); 272 ServiceManager.addService( 273 Context.THROTTLE_SERVICE, throttle); 274 } catch (Throwable e) { 275 Slog.e(TAG, "Failure starting ThrottleService", e); 276 } 277 278 try { 279 Slog.i(TAG, "Accessibility Manager"); 280 ServiceManager.addService(Context.ACCESSIBILITY_SERVICE, 281 new AccessibilityManagerService(context)); 282 } catch (Throwable e) { 283 Slog.e(TAG, "Failure starting Accessibility Manager", e); 284 } 285 286 try { 287 /* 288 * NotificationManagerService is dependant on MountService, 289 * (for media / usb notifications) so we must start MountService first. 290 */ 291 Slog.i(TAG, "Mount Service"); 292 ServiceManager.addService("mount", new MountService(context)); 293 } catch (Throwable e) { 294 Slog.e(TAG, "Failure starting Mount Service", e); 295 } 296 297 try { 298 Slog.i(TAG, "Notification Manager"); 299 notification = new NotificationManagerService(context, statusBar, lights); 300 ServiceManager.addService(Context.NOTIFICATION_SERVICE, notification); 301 } catch (Throwable e) { 302 Slog.e(TAG, "Failure starting Notification Manager", e); 303 } 304 305 try { 306 Slog.i(TAG, "Device Storage Monitor"); 307 ServiceManager.addService(DeviceStorageMonitorService.SERVICE, 308 new DeviceStorageMonitorService(context)); 309 } catch (Throwable e) { 310 Slog.e(TAG, "Failure starting DeviceStorageMonitor service", e); 311 } 312 313 try { 314 Slog.i(TAG, "Location Manager"); 315 location = new LocationManagerService(context); 316 ServiceManager.addService(Context.LOCATION_SERVICE, location); 317 } catch (Throwable e) { 318 Slog.e(TAG, "Failure starting Location Manager", e); 319 } 320 321 try { 322 Slog.i(TAG, "Search Service"); 323 ServiceManager.addService(Context.SEARCH_SERVICE, 324 new SearchManagerService(context)); 325 } catch (Throwable e) { 326 Slog.e(TAG, "Failure starting Search Service", e); 327 } 328 329 try { 330 Slog.i(TAG, "DropBox Service"); 331 ServiceManager.addService(Context.DROPBOX_SERVICE, 332 new DropBoxManagerService(context, new File("/data/system/dropbox"))); 333 } catch (Throwable e) { 334 Slog.e(TAG, "Failure starting DropBoxManagerService", e); 335 } 336 337 try { 338 Slog.i(TAG, "Wallpaper Service"); 339 wallpaper = new WallpaperManagerService(context); 340 ServiceManager.addService(Context.WALLPAPER_SERVICE, wallpaper); 341 } catch (Throwable e) { 342 Slog.e(TAG, "Failure starting Wallpaper Service", e); 343 } 344 345 try { 346 Slog.i(TAG, "Audio Service"); 347 ServiceManager.addService(Context.AUDIO_SERVICE, new AudioService(context)); 348 } catch (Throwable e) { 349 Slog.e(TAG, "Failure starting Audio Service", e); 350 } 351 352 try { 353 Slog.i(TAG, "Headset Observer"); 354 // Listen for wired headset changes 355 headset = new HeadsetObserver(context); 356 } catch (Throwable e) { 357 Slog.e(TAG, "Failure starting HeadsetObserver", e); 358 } 359 360 try { 361 Slog.i(TAG, "Dock Observer"); 362 // Listen for dock station changes 363 dock = new DockObserver(context, power); 364 } catch (Throwable e) { 365 Slog.e(TAG, "Failure starting DockObserver", e); 366 } 367 368 try { 369 Slog.i(TAG, "UI Mode Manager Service"); 370 // Listen for dock station changes 371 uiMode = new UiModeManagerService(context); 372 } catch (Throwable e) { 373 Slog.e(TAG, "Failure starting UiModeManagerService", e); 374 } 375 376 try { 377 Slog.i(TAG, "Backup Service"); 378 ServiceManager.addService(Context.BACKUP_SERVICE, 379 new BackupManagerService(context)); 380 } catch (Throwable e) { 381 Slog.e(TAG, "Failure starting Backup Service", e); 382 } 383 384 try { 385 Slog.i(TAG, "AppWidget Service"); 386 appWidget = new AppWidgetService(context); 387 ServiceManager.addService(Context.APPWIDGET_SERVICE, appWidget); 388 } catch (Throwable e) { 389 Slog.e(TAG, "Failure starting AppWidget Service", e); 390 } 391 392 try { 393 Slog.i(TAG, "Recognition Service"); 394 recognition = new RecognitionManagerService(context); 395 } catch (Throwable e) { 396 Slog.e(TAG, "Failure starting Recognition Service", e); 397 } 398 399 try { 400 Slog.i(TAG, "DiskStats Service"); 401 ServiceManager.addService("diskstats", new DiskStatsService(context)); 402 } catch (Throwable e) { 403 Slog.e(TAG, "Failure starting DiskStats Service", e); 404 } 405 } 406 407 // make sure the ADB_ENABLED setting value matches the secure property value 408 Settings.Secure.putInt(mContentResolver, Settings.Secure.ADB_ENABLED, 409 "1".equals(SystemProperties.get("persist.service.adb.enable")) ? 1 : 0); 410 411 // register observer to listen for settings changes 412 mContentResolver.registerContentObserver(Settings.Secure.getUriFor(Settings.Secure.ADB_ENABLED), 413 false, new AdbSettingsObserver()); 414 415 // Before things start rolling, be sure we have decided whether 416 // we are in safe mode. 417 final boolean safeMode = wm.detectSafeMode(); 418 if (safeMode) { 419 try { 420 ActivityManagerNative.getDefault().enterSafeMode(); 421 // Post the safe mode state in the Zygote class 422 Zygote.systemInSafeMode = true; 423 // Disable the JIT for the system_server process 424 VMRuntime.getRuntime().disableJitCompilation(); 425 } catch (RemoteException e) { 426 } 427 } else { 428 // Enable the JIT for the system_server process 429 VMRuntime.getRuntime().startJitCompilation(); 430 } 431 432 // It is now time to start up the app processes... 433 434 if (devicePolicy != null) { 435 devicePolicy.systemReady(); 436 } 437 438 if (notification != null) { 439 notification.systemReady(); 440 } 441 442 if (statusBar != null) { 443 statusBar.systemReady(); 444 } 445 wm.systemReady(); 446 power.systemReady(); 447 try { 448 pm.systemReady(); 449 } catch (RemoteException e) { 450 } 451 452 // These are needed to propagate to the runnable below. 453 final StatusBarManagerService statusBarF = statusBar; 454 final BatteryService batteryF = battery; 455 final ConnectivityService connectivityF = connectivity; 456 final DockObserver dockF = dock; 457 final ThrottleService throttleF = throttle; 458 final UiModeManagerService uiModeF = uiMode; 459 final AppWidgetService appWidgetF = appWidget; 460 final WallpaperManagerService wallpaperF = wallpaper; 461 final InputMethodManagerService immF = imm; 462 final RecognitionManagerService recognitionF = recognition; 463 final LocationManagerService locationF = location; 464 465 // We now tell the activity manager it is okay to run third party 466 // code. It will call back into us once it has gotten to the state 467 // where third party code can really run (but before it has actually 468 // started launching the initial applications), for us to complete our 469 // initialization. 470 ((ActivityManagerService)ActivityManagerNative.getDefault()) 471 .systemReady(new Runnable() { 472 public void run() { 473 Slog.i(TAG, "Making services ready"); 474 475 if (statusBarF != null) statusBarF.systemReady2(); 476 if (batteryF != null) batteryF.systemReady(); 477 if (connectivityF != null) connectivityF.systemReady(); 478 if (dockF != null) dockF.systemReady(); 479 if (uiModeF != null) uiModeF.systemReady(); 480 if (recognitionF != null) recognitionF.systemReady(); 481 Watchdog.getInstance().start(); 482 483 // It is now okay to let the various system services start their 484 // third party code... 485 486 if (appWidgetF != null) appWidgetF.systemReady(safeMode); 487 if (wallpaperF != null) wallpaperF.systemReady(); 488 if (immF != null) immF.systemReady(); 489 if (locationF != null) locationF.systemReady(); 490 if (throttleF != null) throttleF.systemReady(); 491 } 492 }); 493 494 Looper.loop(); 495 Slog.d(TAG, "System ServerThread is exiting!"); 496 } 497} 498 499public class SystemServer { 500 private static final String TAG = "SystemServer"; 501 502 public static final int FACTORY_TEST_OFF = 0; 503 public static final int FACTORY_TEST_LOW_LEVEL = 1; 504 public static final int FACTORY_TEST_HIGH_LEVEL = 2; 505 506 static Timer timer; 507 static final long SNAPSHOT_INTERVAL = 60 * 60 * 1000; // 1hr 508 509 /** 510 * This method is called from Zygote to initialize the system. This will cause the native 511 * services (SurfaceFlinger, AudioFlinger, etc..) to be started. After that it will call back 512 * up into init2() to start the Android services. 513 */ 514 native public static void init1(String[] args); 515 516 public static void main(String[] args) { 517 if (SamplingProfilerIntegration.isEnabled()) { 518 SamplingProfilerIntegration.start(); 519 timer = new Timer(); 520 timer.schedule(new TimerTask() { 521 @Override 522 public void run() { 523 SamplingProfilerIntegration.writeSnapshot("system_server"); 524 } 525 }, SNAPSHOT_INTERVAL, SNAPSHOT_INTERVAL); 526 } 527 528 // The system server has to run all of the time, so it needs to be 529 // as efficient as possible with its memory usage. 530 VMRuntime.getRuntime().setTargetHeapUtilization(0.8f); 531 532 System.loadLibrary("android_servers"); 533 init1(args); 534 } 535 536 public static final void init2() { 537 Slog.i(TAG, "Entered the Android system server!"); 538 Thread thr = new ServerThread(); 539 thr.setName("android.server.ServerThread"); 540 thr.start(); 541 } 542} 543