SystemServer.java revision 5132b37018c2445c74d930013c4bdaf75b20cabf
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 android.os.Process.setCanSelfBackground(false); 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 UsbObserver usb = null; 98 UiModeManagerService uiMode = null; 99 RecognitionManagerService recognition = null; 100 ThrottleService throttle = null; 101 102 // Critical services... 103 try { 104 Slog.i(TAG, "Entropy Service"); 105 ServiceManager.addService("entropy", new EntropyService()); 106 107 Slog.i(TAG, "Power Manager"); 108 power = new PowerManagerService(); 109 ServiceManager.addService(Context.POWER_SERVICE, power); 110 111 Slog.i(TAG, "Activity Manager"); 112 context = ActivityManagerService.main(factoryTest); 113 114 Slog.i(TAG, "Telephony Registry"); 115 ServiceManager.addService("telephony.registry", new TelephonyRegistry(context)); 116 117 AttributeCache.init(context); 118 119 Slog.i(TAG, "Package Manager"); 120 pm = PackageManagerService.main(context, 121 factoryTest != SystemServer.FACTORY_TEST_OFF); 122 123 ActivityManagerService.setSystemProcess(); 124 125 mContentResolver = context.getContentResolver(); 126 127 // The AccountManager must come before the ContentService 128 try { 129 Slog.i(TAG, "Account Manager"); 130 ServiceManager.addService(Context.ACCOUNT_SERVICE, 131 new AccountManagerService(context)); 132 } catch (Throwable e) { 133 Slog.e(TAG, "Failure starting Account Manager", e); 134 } 135 136 Slog.i(TAG, "Content Manager"); 137 ContentService.main(context, 138 factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL); 139 140 Slog.i(TAG, "System Content Providers"); 141 ActivityManagerService.installSystemProviders(); 142 143 Slog.i(TAG, "Battery Service"); 144 battery = new BatteryService(context); 145 ServiceManager.addService("battery", battery); 146 147 Slog.i(TAG, "Lights Service"); 148 lights = new LightsService(context); 149 150 Slog.i(TAG, "Vibrator Service"); 151 ServiceManager.addService("vibrator", new VibratorService(context)); 152 153 // only initialize the power service after we have started the 154 // lights service, content providers and the battery service. 155 power.init(context, lights, ActivityManagerService.getDefault(), battery); 156 157 Slog.i(TAG, "Alarm Manager"); 158 AlarmManagerService alarm = new AlarmManagerService(context); 159 ServiceManager.addService(Context.ALARM_SERVICE, alarm); 160 161 Slog.i(TAG, "Init Watchdog"); 162 Watchdog.getInstance().init(context, battery, power, alarm, 163 ActivityManagerService.self()); 164 165 Slog.i(TAG, "Window Manager"); 166 wm = WindowManagerService.main(context, power, 167 factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL); 168 ServiceManager.addService(Context.WINDOW_SERVICE, wm); 169 170 ((ActivityManagerService)ServiceManager.getService("activity")) 171 .setWindowManager(wm); 172 173 // Skip Bluetooth if we have an emulator kernel 174 // TODO: Use a more reliable check to see if this product should 175 // support Bluetooth - see bug 988521 176 if (SystemProperties.get("ro.kernel.qemu").equals("1")) { 177 Slog.i(TAG, "Registering null Bluetooth Service (emulator)"); 178 ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, null); 179 } else if (factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL) { 180 Slog.i(TAG, "Registering null Bluetooth Service (factory test)"); 181 ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, null); 182 } else { 183 Slog.i(TAG, "Bluetooth Service"); 184 bluetooth = new BluetoothService(context); 185 ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, bluetooth); 186 bluetooth.initAfterRegistration(); 187 bluetoothA2dp = new BluetoothA2dpService(context, bluetooth); 188 ServiceManager.addService(BluetoothA2dpService.BLUETOOTH_A2DP_SERVICE, 189 bluetoothA2dp); 190 191 int bluetoothOn = Settings.Secure.getInt(mContentResolver, 192 Settings.Secure.BLUETOOTH_ON, 0); 193 if (bluetoothOn > 0) { 194 bluetooth.enable(); 195 } 196 } 197 198 } catch (RuntimeException e) { 199 Slog.e("System", "Failure starting core service", e); 200 } 201 202 DevicePolicyManagerService devicePolicy = null; 203 StatusBarManagerService statusBar = null; 204 InputMethodManagerService imm = null; 205 AppWidgetService appWidget = null; 206 NotificationManagerService notification = null; 207 WallpaperManagerService wallpaper = null; 208 LocationManagerService location = null; 209 CountryDetectorService countryDetector = null; 210 211 if (factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL) { 212 try { 213 Slog.i(TAG, "Device Policy"); 214 devicePolicy = new DevicePolicyManagerService(context); 215 ServiceManager.addService(Context.DEVICE_POLICY_SERVICE, devicePolicy); 216 } catch (Throwable e) { 217 Slog.e(TAG, "Failure starting DevicePolicyService", e); 218 } 219 220 try { 221 Slog.i(TAG, "Status Bar"); 222 statusBar = new StatusBarManagerService(context); 223 ServiceManager.addService(Context.STATUS_BAR_SERVICE, statusBar); 224 } catch (Throwable e) { 225 Slog.e(TAG, "Failure starting StatusBarManagerService", e); 226 } 227 228 try { 229 Slog.i(TAG, "Clipboard Service"); 230 ServiceManager.addService(Context.CLIPBOARD_SERVICE, 231 new ClipboardService(context)); 232 } catch (Throwable e) { 233 Slog.e(TAG, "Failure starting Clipboard Service", e); 234 } 235 236 try { 237 Slog.i(TAG, "Input Method Service"); 238 imm = new InputMethodManagerService(context, statusBar); 239 ServiceManager.addService(Context.INPUT_METHOD_SERVICE, imm); 240 } catch (Throwable e) { 241 Slog.e(TAG, "Failure starting Input Manager Service", e); 242 } 243 244 try { 245 Slog.i(TAG, "NetStat Service"); 246 ServiceManager.addService("netstat", new NetStatService(context)); 247 } catch (Throwable e) { 248 Slog.e(TAG, "Failure starting NetStat Service", e); 249 } 250 251 try { 252 Slog.i(TAG, "NetworkManagement Service"); 253 ServiceManager.addService( 254 Context.NETWORKMANAGEMENT_SERVICE, new NetworkManagementService(context)); 255 } catch (Throwable e) { 256 Slog.e(TAG, "Failure starting NetworkManagement Service", e); 257 } 258 259 try { 260 Slog.i(TAG, "Connectivity Service"); 261 connectivity = ConnectivityService.getInstance(context); 262 ServiceManager.addService(Context.CONNECTIVITY_SERVICE, connectivity); 263 } catch (Throwable e) { 264 Slog.e(TAG, "Failure starting Connectivity Service", e); 265 } 266 267 try { 268 Slog.i(TAG, "Throttle Service"); 269 throttle = new ThrottleService(context); 270 ServiceManager.addService( 271 Context.THROTTLE_SERVICE, throttle); 272 } catch (Throwable e) { 273 Slog.e(TAG, "Failure starting ThrottleService", e); 274 } 275 276 try { 277 Slog.i(TAG, "Accessibility Manager"); 278 ServiceManager.addService(Context.ACCESSIBILITY_SERVICE, 279 new AccessibilityManagerService(context)); 280 } catch (Throwable e) { 281 Slog.e(TAG, "Failure starting Accessibility Manager", e); 282 } 283 284 try { 285 /* 286 * NotificationManagerService is dependant on MountService, 287 * (for media / usb notifications) so we must start MountService first. 288 */ 289 Slog.i(TAG, "Mount Service"); 290 ServiceManager.addService("mount", new MountService(context)); 291 } catch (Throwable e) { 292 Slog.e(TAG, "Failure starting Mount Service", e); 293 } 294 295 try { 296 Slog.i(TAG, "Notification Manager"); 297 notification = new NotificationManagerService(context, statusBar, lights); 298 ServiceManager.addService(Context.NOTIFICATION_SERVICE, notification); 299 } catch (Throwable e) { 300 Slog.e(TAG, "Failure starting Notification Manager", e); 301 } 302 303 try { 304 Slog.i(TAG, "Device Storage Monitor"); 305 ServiceManager.addService(DeviceStorageMonitorService.SERVICE, 306 new DeviceStorageMonitorService(context)); 307 } catch (Throwable e) { 308 Slog.e(TAG, "Failure starting DeviceStorageMonitor service", e); 309 } 310 311 try { 312 Slog.i(TAG, "Location Manager"); 313 location = new LocationManagerService(context); 314 ServiceManager.addService(Context.LOCATION_SERVICE, location); 315 } catch (Throwable e) { 316 Slog.e(TAG, "Failure starting Location Manager", e); 317 } 318 319 try { 320 Slog.i(TAG, "Country Detector"); 321 countryDetector = new CountryDetectorService(context); 322 ServiceManager.addService(Context.COUNTRY_DETECTOR, countryDetector); 323 } catch (Throwable e) { 324 Slog.e(TAG, "Failure starting Country Detector", e); 325 } 326 327 try { 328 Slog.i(TAG, "Search Service"); 329 ServiceManager.addService(Context.SEARCH_SERVICE, 330 new SearchManagerService(context)); 331 } catch (Throwable e) { 332 Slog.e(TAG, "Failure starting Search Service", e); 333 } 334 335 try { 336 Slog.i(TAG, "DropBox Service"); 337 ServiceManager.addService(Context.DROPBOX_SERVICE, 338 new DropBoxManagerService(context, new File("/data/system/dropbox"))); 339 } catch (Throwable e) { 340 Slog.e(TAG, "Failure starting DropBoxManagerService", e); 341 } 342 343 try { 344 Slog.i(TAG, "Wallpaper Service"); 345 wallpaper = new WallpaperManagerService(context); 346 ServiceManager.addService(Context.WALLPAPER_SERVICE, wallpaper); 347 } catch (Throwable e) { 348 Slog.e(TAG, "Failure starting Wallpaper Service", e); 349 } 350 351 try { 352 Slog.i(TAG, "Audio Service"); 353 ServiceManager.addService(Context.AUDIO_SERVICE, new AudioService(context)); 354 } catch (Throwable e) { 355 Slog.e(TAG, "Failure starting Audio Service", e); 356 } 357 358 try { 359 Slog.i(TAG, "Headset Observer"); 360 // Listen for wired headset changes 361 headset = new HeadsetObserver(context); 362 } catch (Throwable e) { 363 Slog.e(TAG, "Failure starting HeadsetObserver", e); 364 } 365 366 try { 367 Slog.i(TAG, "Dock Observer"); 368 // Listen for dock station changes 369 dock = new DockObserver(context, power); 370 } catch (Throwable e) { 371 Slog.e(TAG, "Failure starting DockObserver", e); 372 } 373 374 try { 375 Slog.i(TAG, "USB Observer"); 376 // Listen for USB changes 377 usb = new UsbObserver(context); 378 } catch (Throwable e) { 379 Slog.e(TAG, "Failure starting UsbObserver", e); 380 } 381 382 try { 383 Slog.i(TAG, "UI Mode Manager Service"); 384 // Listen for UI mode changes 385 uiMode = new UiModeManagerService(context); 386 } catch (Throwable e) { 387 Slog.e(TAG, "Failure starting UiModeManagerService", e); 388 } 389 390 try { 391 Slog.i(TAG, "Backup Service"); 392 ServiceManager.addService(Context.BACKUP_SERVICE, 393 new BackupManagerService(context)); 394 } catch (Throwable e) { 395 Slog.e(TAG, "Failure starting Backup Service", e); 396 } 397 398 try { 399 Slog.i(TAG, "AppWidget Service"); 400 appWidget = new AppWidgetService(context); 401 ServiceManager.addService(Context.APPWIDGET_SERVICE, appWidget); 402 } catch (Throwable e) { 403 Slog.e(TAG, "Failure starting AppWidget Service", e); 404 } 405 406 try { 407 Slog.i(TAG, "Recognition Service"); 408 recognition = new RecognitionManagerService(context); 409 } catch (Throwable e) { 410 Slog.e(TAG, "Failure starting Recognition Service", e); 411 } 412 413 try { 414 Slog.i(TAG, "DiskStats Service"); 415 ServiceManager.addService("diskstats", new DiskStatsService(context)); 416 } catch (Throwable e) { 417 Slog.e(TAG, "Failure starting DiskStats Service", e); 418 } 419 420 try { 421 // need to add this service even if SamplingProfilerIntegration.isEnabled() 422 // is false, because it is this service that detects system property change and 423 // turns on SamplingProfilerIntegration. Plus, when sampling profiler doesn't work, 424 // there is little overhead for running this service. 425 Slog.i(TAG, "SamplingProfiler Service"); 426 ServiceManager.addService("samplingprofiler", 427 new SamplingProfilerService(context)); 428 } catch (Throwable e) { 429 Slog.e(TAG, "Failure starting SamplingProfiler Service", e); 430 } 431 } 432 433 // make sure the ADB_ENABLED setting value matches the secure property value 434 Settings.Secure.putInt(mContentResolver, Settings.Secure.ADB_ENABLED, 435 "1".equals(SystemProperties.get("persist.service.adb.enable")) ? 1 : 0); 436 437 // register observer to listen for settings changes 438 mContentResolver.registerContentObserver(Settings.Secure.getUriFor(Settings.Secure.ADB_ENABLED), 439 false, new AdbSettingsObserver()); 440 441 // Before things start rolling, be sure we have decided whether 442 // we are in safe mode. 443 final boolean safeMode = wm.detectSafeMode(); 444 if (safeMode) { 445 try { 446 ActivityManagerNative.getDefault().enterSafeMode(); 447 // Post the safe mode state in the Zygote class 448 Zygote.systemInSafeMode = true; 449 // Disable the JIT for the system_server process 450 VMRuntime.getRuntime().disableJitCompilation(); 451 } catch (RemoteException e) { 452 } 453 } else { 454 // Enable the JIT for the system_server process 455 VMRuntime.getRuntime().startJitCompilation(); 456 } 457 458 // It is now time to start up the app processes... 459 460 if (devicePolicy != null) { 461 devicePolicy.systemReady(); 462 } 463 464 if (notification != null) { 465 notification.systemReady(); 466 } 467 468 if (statusBar != null) { 469 statusBar.systemReady(); 470 } 471 wm.systemReady(); 472 power.systemReady(); 473 try { 474 pm.systemReady(); 475 } catch (RemoteException e) { 476 } 477 478 wm.initDisplay(); 479 480 // These are needed to propagate to the runnable below. 481 final StatusBarManagerService statusBarF = statusBar; 482 final BatteryService batteryF = battery; 483 final ConnectivityService connectivityF = connectivity; 484 final DockObserver dockF = dock; 485 final UsbObserver usbF = usb; 486 final ThrottleService throttleF = throttle; 487 final UiModeManagerService uiModeF = uiMode; 488 final AppWidgetService appWidgetF = appWidget; 489 final WallpaperManagerService wallpaperF = wallpaper; 490 final InputMethodManagerService immF = imm; 491 final RecognitionManagerService recognitionF = recognition; 492 final LocationManagerService locationF = location; 493 final CountryDetectorService countryDetectorF = countryDetector; 494 495 // We now tell the activity manager it is okay to run third party 496 // code. It will call back into us once it has gotten to the state 497 // where third party code can really run (but before it has actually 498 // started launching the initial applications), for us to complete our 499 // initialization. 500 ((ActivityManagerService)ActivityManagerNative.getDefault()) 501 .systemReady(new Runnable() { 502 public void run() { 503 Slog.i(TAG, "Making services ready"); 504 505 if (statusBarF != null) statusBarF.systemReady2(); 506 if (batteryF != null) batteryF.systemReady(); 507 if (connectivityF != null) connectivityF.systemReady(); 508 if (dockF != null) dockF.systemReady(); 509 if (usbF != null) usbF.systemReady(); 510 if (uiModeF != null) uiModeF.systemReady(); 511 if (recognitionF != null) recognitionF.systemReady(); 512 Watchdog.getInstance().start(); 513 514 // It is now okay to let the various system services start their 515 // third party code... 516 517 if (appWidgetF != null) appWidgetF.systemReady(safeMode); 518 if (wallpaperF != null) wallpaperF.systemReady(); 519 if (immF != null) immF.systemReady(); 520 if (locationF != null) locationF.systemReady(); 521 if (countryDetectorF != null) countryDetectorF.systemReady(); 522 if (throttleF != null) throttleF.systemReady(); 523 } 524 }); 525 526 Looper.loop(); 527 Slog.d(TAG, "System ServerThread is exiting!"); 528 } 529} 530 531public class SystemServer { 532 private static final String TAG = "SystemServer"; 533 534 public static final int FACTORY_TEST_OFF = 0; 535 public static final int FACTORY_TEST_LOW_LEVEL = 1; 536 public static final int FACTORY_TEST_HIGH_LEVEL = 2; 537 538 static Timer timer; 539 static final long SNAPSHOT_INTERVAL = 60 * 60 * 1000; // 1hr 540 541 /** 542 * This method is called from Zygote to initialize the system. This will cause the native 543 * services (SurfaceFlinger, AudioFlinger, etc..) to be started. After that it will call back 544 * up into init2() to start the Android services. 545 */ 546 native public static void init1(String[] args); 547 548 public static void main(String[] args) { 549 if (SamplingProfilerIntegration.isEnabled()) { 550 SamplingProfilerIntegration.start(); 551 timer = new Timer(); 552 timer.schedule(new TimerTask() { 553 @Override 554 public void run() { 555 SamplingProfilerIntegration.writeSnapshot("system_server", null); 556 } 557 }, SNAPSHOT_INTERVAL, SNAPSHOT_INTERVAL); 558 } 559 560 // The system server has to run all of the time, so it needs to be 561 // as efficient as possible with its memory usage. 562 VMRuntime.getRuntime().setTargetHeapUtilization(0.8f); 563 564 System.loadLibrary("android_servers"); 565 init1(args); 566 } 567 568 public static final void init2() { 569 Slog.i(TAG, "Entered the Android system server!"); 570 Thread thr = new ServerThread(); 571 thr.setName("android.server.ServerThread"); 572 thr.start(); 573 } 574} 575