SystemServer.java revision c74a1b441490e5648ac4388baeccb78cae4ab364
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.server.sip.SipService; 21import com.android.internal.os.BinderInternal; 22import com.android.internal.os.SamplingProfilerIntegration; 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.Build; 37import android.os.Looper; 38import android.os.RemoteException; 39import android.os.ServiceManager; 40import android.os.StrictMode; 41import android.os.SystemClock; 42import android.os.SystemProperties; 43import android.provider.Settings; 44import android.server.BluetoothA2dpService; 45import android.server.BluetoothService; 46import android.server.search.SearchManagerService; 47import android.util.EventLog; 48import android.util.Slog; 49 50import java.io.File; 51import java.util.Timer; 52import java.util.TimerTask; 53 54class ServerThread extends Thread { 55 private static final String TAG = "SystemServer"; 56 57 ContentResolver mContentResolver; 58 59 private class AdbSettingsObserver extends ContentObserver { 60 public AdbSettingsObserver() { 61 super(null); 62 } 63 @Override 64 public void onChange(boolean selfChange) { 65 boolean enableAdb = (Settings.Secure.getInt(mContentResolver, 66 Settings.Secure.ADB_ENABLED, 0) > 0); 67 // setting this secure property will start or stop adbd 68 SystemProperties.set("persist.service.adb.enable", enableAdb ? "1" : "0"); 69 } 70 } 71 72 @Override 73 public void run() { 74 EventLog.writeEvent(EventLogTags.BOOT_PROGRESS_SYSTEM_RUN, 75 SystemClock.uptimeMillis()); 76 77 Looper.prepare(); 78 79 android.os.Process.setThreadPriority( 80 android.os.Process.THREAD_PRIORITY_FOREGROUND); 81 82 BinderInternal.disableBackgroundScheduling(true); 83 android.os.Process.setCanSelfBackground(false); 84 85 String factoryTestStr = SystemProperties.get("ro.factorytest"); 86 int factoryTest = "".equals(factoryTestStr) ? SystemServer.FACTORY_TEST_OFF 87 : Integer.parseInt(factoryTestStr); 88 89 LightsService lights = null; 90 PowerManagerService power = null; 91 BatteryService battery = null; 92 ConnectivityService connectivity = null; 93 IPackageManager pm = null; 94 Context context = null; 95 WindowManagerService wm = null; 96 BluetoothService bluetooth = null; 97 BluetoothA2dpService bluetoothA2dp = null; 98 HeadsetObserver headset = null; 99 DockObserver dock = null; 100 UsbObserver usb = null; 101 UiModeManagerService uiMode = null; 102 RecognitionManagerService recognition = null; 103 ThrottleService throttle = null; 104 105 // Critical services... 106 try { 107 Slog.i(TAG, "Entropy Service"); 108 ServiceManager.addService("entropy", new EntropyService()); 109 110 Slog.i(TAG, "Power Manager"); 111 power = new PowerManagerService(); 112 ServiceManager.addService(Context.POWER_SERVICE, power); 113 114 Slog.i(TAG, "Activity Manager"); 115 context = ActivityManagerService.main(factoryTest); 116 117 Slog.i(TAG, "Telephony Registry"); 118 ServiceManager.addService("telephony.registry", new TelephonyRegistry(context)); 119 120 AttributeCache.init(context); 121 122 Slog.i(TAG, "Package Manager"); 123 pm = PackageManagerService.main(context, 124 factoryTest != SystemServer.FACTORY_TEST_OFF); 125 126 ActivityManagerService.setSystemProcess(); 127 128 mContentResolver = context.getContentResolver(); 129 130 // The AccountManager must come before the ContentService 131 try { 132 Slog.i(TAG, "Account Manager"); 133 ServiceManager.addService(Context.ACCOUNT_SERVICE, 134 new AccountManagerService(context)); 135 } catch (Throwable e) { 136 Slog.e(TAG, "Failure starting Account Manager", e); 137 } 138 139 Slog.i(TAG, "Content Manager"); 140 ContentService.main(context, 141 factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL); 142 143 Slog.i(TAG, "System Content Providers"); 144 ActivityManagerService.installSystemProviders(); 145 146 Slog.i(TAG, "Battery Service"); 147 battery = new BatteryService(context); 148 ServiceManager.addService("battery", battery); 149 150 Slog.i(TAG, "Lights Service"); 151 lights = new LightsService(context); 152 153 Slog.i(TAG, "Vibrator Service"); 154 ServiceManager.addService("vibrator", new VibratorService(context)); 155 156 // only initialize the power service after we have started the 157 // lights service, content providers and the battery service. 158 power.init(context, lights, ActivityManagerService.getDefault(), battery); 159 160 Slog.i(TAG, "Alarm Manager"); 161 AlarmManagerService alarm = new AlarmManagerService(context); 162 ServiceManager.addService(Context.ALARM_SERVICE, alarm); 163 164 Slog.i(TAG, "Init Watchdog"); 165 Watchdog.getInstance().init(context, battery, power, alarm, 166 ActivityManagerService.self()); 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 CountryDetectorService countryDetector = null; 213 214 if (factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL) { 215 try { 216 Slog.i(TAG, "Device Policy"); 217 devicePolicy = new DevicePolicyManagerService(context); 218 ServiceManager.addService(Context.DEVICE_POLICY_SERVICE, devicePolicy); 219 } catch (Throwable e) { 220 Slog.e(TAG, "Failure starting DevicePolicyService", e); 221 } 222 223 try { 224 Slog.i(TAG, "Status Bar"); 225 statusBar = new StatusBarManagerService(context); 226 ServiceManager.addService(Context.STATUS_BAR_SERVICE, statusBar); 227 } catch (Throwable e) { 228 Slog.e(TAG, "Failure starting StatusBarManagerService", e); 229 } 230 231 try { 232 Slog.i(TAG, "Clipboard Service"); 233 ServiceManager.addService(Context.CLIPBOARD_SERVICE, 234 new ClipboardService(context)); 235 } catch (Throwable e) { 236 Slog.e(TAG, "Failure starting Clipboard Service", e); 237 } 238 239 try { 240 Slog.i(TAG, "Input Method Service"); 241 imm = new InputMethodManagerService(context, statusBar); 242 ServiceManager.addService(Context.INPUT_METHOD_SERVICE, imm); 243 } catch (Throwable e) { 244 Slog.e(TAG, "Failure starting Input Manager Service", e); 245 } 246 247 try { 248 Slog.i(TAG, "NetStat Service"); 249 ServiceManager.addService("netstat", new NetStatService(context)); 250 } catch (Throwable e) { 251 Slog.e(TAG, "Failure starting NetStat Service", e); 252 } 253 254 try { 255 Slog.i(TAG, "NetworkManagement Service"); 256 ServiceManager.addService( 257 Context.NETWORKMANAGEMENT_SERVICE, new NetworkManagementService(context)); 258 } catch (Throwable e) { 259 Slog.e(TAG, "Failure starting NetworkManagement Service", e); 260 } 261 262 try { 263 Slog.i(TAG, "Connectivity Service"); 264 connectivity = ConnectivityService.getInstance(context); 265 ServiceManager.addService(Context.CONNECTIVITY_SERVICE, connectivity); 266 } catch (Throwable e) { 267 Slog.e(TAG, "Failure starting Connectivity Service", e); 268 } 269 270 try { 271 Slog.i(TAG, "Throttle Service"); 272 throttle = new ThrottleService(context); 273 ServiceManager.addService( 274 Context.THROTTLE_SERVICE, throttle); 275 } catch (Throwable e) { 276 Slog.e(TAG, "Failure starting ThrottleService", e); 277 } 278 279 try { 280 Slog.i(TAG, "Accessibility Manager"); 281 ServiceManager.addService(Context.ACCESSIBILITY_SERVICE, 282 new AccessibilityManagerService(context)); 283 } catch (Throwable e) { 284 Slog.e(TAG, "Failure starting Accessibility Manager", e); 285 } 286 287 try { 288 /* 289 * NotificationManagerService is dependant on MountService, 290 * (for media / usb notifications) so we must start MountService first. 291 */ 292 Slog.i(TAG, "Mount Service"); 293 ServiceManager.addService("mount", new MountService(context)); 294 } catch (Throwable e) { 295 Slog.e(TAG, "Failure starting Mount Service", e); 296 } 297 298 try { 299 Slog.i(TAG, "Notification Manager"); 300 notification = new NotificationManagerService(context, statusBar, lights); 301 ServiceManager.addService(Context.NOTIFICATION_SERVICE, notification); 302 } catch (Throwable e) { 303 Slog.e(TAG, "Failure starting Notification Manager", e); 304 } 305 306 try { 307 Slog.i(TAG, "Device Storage Monitor"); 308 ServiceManager.addService(DeviceStorageMonitorService.SERVICE, 309 new DeviceStorageMonitorService(context)); 310 } catch (Throwable e) { 311 Slog.e(TAG, "Failure starting DeviceStorageMonitor service", e); 312 } 313 314 try { 315 Slog.i(TAG, "Location Manager"); 316 location = new LocationManagerService(context); 317 ServiceManager.addService(Context.LOCATION_SERVICE, location); 318 } catch (Throwable e) { 319 Slog.e(TAG, "Failure starting Location Manager", e); 320 } 321 322 try { 323 Slog.i(TAG, "Country Detector"); 324 countryDetector = new CountryDetectorService(context); 325 ServiceManager.addService(Context.COUNTRY_DETECTOR, countryDetector); 326 } catch (Throwable e) { 327 Slog.e(TAG, "Failure starting Country Detector", e); 328 } 329 330 try { 331 Slog.i(TAG, "Search Service"); 332 ServiceManager.addService(Context.SEARCH_SERVICE, 333 new SearchManagerService(context)); 334 } catch (Throwable e) { 335 Slog.e(TAG, "Failure starting Search Service", e); 336 } 337 338 try { 339 Slog.i(TAG, "DropBox Service"); 340 ServiceManager.addService(Context.DROPBOX_SERVICE, 341 new DropBoxManagerService(context, new File("/data/system/dropbox"))); 342 } catch (Throwable e) { 343 Slog.e(TAG, "Failure starting DropBoxManagerService", e); 344 } 345 346 try { 347 Slog.i(TAG, "Wallpaper Service"); 348 wallpaper = new WallpaperManagerService(context); 349 ServiceManager.addService(Context.WALLPAPER_SERVICE, wallpaper); 350 } catch (Throwable e) { 351 Slog.e(TAG, "Failure starting Wallpaper Service", e); 352 } 353 354 try { 355 Slog.i(TAG, "Audio Service"); 356 ServiceManager.addService(Context.AUDIO_SERVICE, new AudioService(context)); 357 } catch (Throwable e) { 358 Slog.e(TAG, "Failure starting Audio Service", e); 359 } 360 361 try { 362 Slog.i(TAG, "Headset Observer"); 363 // Listen for wired headset changes 364 headset = new HeadsetObserver(context); 365 } catch (Throwable e) { 366 Slog.e(TAG, "Failure starting HeadsetObserver", e); 367 } 368 369 try { 370 Slog.i(TAG, "Dock Observer"); 371 // Listen for dock station changes 372 dock = new DockObserver(context, power); 373 } catch (Throwable e) { 374 Slog.e(TAG, "Failure starting DockObserver", e); 375 } 376 377 try { 378 Slog.i(TAG, "USB Observer"); 379 // Listen for USB changes 380 usb = new UsbObserver(context); 381 } catch (Throwable e) { 382 Slog.e(TAG, "Failure starting UsbObserver", e); 383 } 384 385 try { 386 Slog.i(TAG, "UI Mode Manager Service"); 387 // Listen for UI mode changes 388 uiMode = new UiModeManagerService(context); 389 } catch (Throwable e) { 390 Slog.e(TAG, "Failure starting UiModeManagerService", e); 391 } 392 393 try { 394 Slog.i(TAG, "Backup Service"); 395 ServiceManager.addService(Context.BACKUP_SERVICE, 396 new BackupManagerService(context)); 397 } catch (Throwable e) { 398 Slog.e(TAG, "Failure starting Backup Service", e); 399 } 400 401 try { 402 Slog.i(TAG, "AppWidget Service"); 403 appWidget = new AppWidgetService(context); 404 ServiceManager.addService(Context.APPWIDGET_SERVICE, appWidget); 405 } catch (Throwable e) { 406 Slog.e(TAG, "Failure starting AppWidget Service", e); 407 } 408 409 try { 410 Slog.i(TAG, "Recognition Service"); 411 recognition = new RecognitionManagerService(context); 412 } catch (Throwable e) { 413 Slog.e(TAG, "Failure starting Recognition Service", e); 414 } 415 416 try { 417 Slog.i(TAG, "DiskStats Service"); 418 ServiceManager.addService("diskstats", new DiskStatsService(context)); 419 } catch (Throwable e) { 420 Slog.e(TAG, "Failure starting DiskStats Service", e); 421 } 422 423 try { 424 // need to add this service even if SamplingProfilerIntegration.isEnabled() 425 // is false, because it is this service that detects system property change and 426 // turns on SamplingProfilerIntegration. Plus, when sampling profiler doesn't work, 427 // there is little overhead for running this service. 428 Slog.i(TAG, "SamplingProfiler Service"); 429 ServiceManager.addService("samplingprofiler", 430 new SamplingProfilerService(context)); 431 } catch (Throwable e) { 432 Slog.e(TAG, "Failure starting SamplingProfiler Service", e); 433 } 434 435 try { 436 SipService sipService = SipService.create(context); 437 if (sipService != null) { 438 Slog.i(TAG, "Sip Service"); 439 ServiceManager.addService("sip", sipService); 440 } 441 } catch (Throwable e) { 442 Slog.e(TAG, "Failure starting SIP Service", e); 443 } 444 } 445 446 // make sure the ADB_ENABLED setting value matches the secure property value 447 Settings.Secure.putInt(mContentResolver, Settings.Secure.ADB_ENABLED, 448 "1".equals(SystemProperties.get("persist.service.adb.enable")) ? 1 : 0); 449 450 // register observer to listen for settings changes 451 mContentResolver.registerContentObserver(Settings.Secure.getUriFor(Settings.Secure.ADB_ENABLED), 452 false, new AdbSettingsObserver()); 453 454 // Before things start rolling, be sure we have decided whether 455 // we are in safe mode. 456 final boolean safeMode = wm.detectSafeMode(); 457 if (safeMode) { 458 try { 459 ActivityManagerNative.getDefault().enterSafeMode(); 460 // Post the safe mode state in the Zygote class 461 Zygote.systemInSafeMode = true; 462 // Disable the JIT for the system_server process 463 VMRuntime.getRuntime().disableJitCompilation(); 464 } catch (RemoteException e) { 465 } 466 } else { 467 // Enable the JIT for the system_server process 468 VMRuntime.getRuntime().startJitCompilation(); 469 } 470 471 // It is now time to start up the app processes... 472 473 if (devicePolicy != null) { 474 devicePolicy.systemReady(); 475 } 476 477 if (notification != null) { 478 notification.systemReady(); 479 } 480 481 if (statusBar != null) { 482 statusBar.systemReady(); 483 } 484 wm.systemReady(); 485 power.systemReady(); 486 try { 487 pm.systemReady(); 488 } catch (RemoteException e) { 489 } 490 491 // These are needed to propagate to the runnable below. 492 final StatusBarManagerService statusBarF = statusBar; 493 final BatteryService batteryF = battery; 494 final ConnectivityService connectivityF = connectivity; 495 final DockObserver dockF = dock; 496 final UsbObserver usbF = usb; 497 final ThrottleService throttleF = throttle; 498 final UiModeManagerService uiModeF = uiMode; 499 final AppWidgetService appWidgetF = appWidget; 500 final WallpaperManagerService wallpaperF = wallpaper; 501 final InputMethodManagerService immF = imm; 502 final RecognitionManagerService recognitionF = recognition; 503 final LocationManagerService locationF = location; 504 final CountryDetectorService countryDetectorF = countryDetector; 505 506 // We now tell the activity manager it is okay to run third party 507 // code. It will call back into us once it has gotten to the state 508 // where third party code can really run (but before it has actually 509 // started launching the initial applications), for us to complete our 510 // initialization. 511 ((ActivityManagerService)ActivityManagerNative.getDefault()) 512 .systemReady(new Runnable() { 513 public void run() { 514 Slog.i(TAG, "Making services ready"); 515 516 if (statusBarF != null) statusBarF.systemReady2(); 517 if (batteryF != null) batteryF.systemReady(); 518 if (connectivityF != null) connectivityF.systemReady(); 519 if (dockF != null) dockF.systemReady(); 520 if (usbF != null) usbF.systemReady(); 521 if (uiModeF != null) uiModeF.systemReady(); 522 if (recognitionF != null) recognitionF.systemReady(); 523 Watchdog.getInstance().start(); 524 525 // It is now okay to let the various system services start their 526 // third party code... 527 528 if (appWidgetF != null) appWidgetF.systemReady(safeMode); 529 if (wallpaperF != null) wallpaperF.systemReady(); 530 if (immF != null) immF.systemReady(); 531 if (locationF != null) locationF.systemReady(); 532 if (countryDetectorF != null) countryDetectorF.systemReady(); 533 if (throttleF != null) throttleF.systemReady(); 534 } 535 }); 536 537 // For debug builds, log event loop stalls to dropbox for analysis. 538 // Similar logic also appears in ActivityThread.java for system apps. 539 if (!"user".equals(Build.TYPE)) { 540 Slog.i(TAG, "Enabling StrictMode for system server."); 541 StrictMode.setThreadPolicy( 542 StrictMode.DISALLOW_DISK_WRITE | 543 StrictMode.DISALLOW_DISK_READ | 544 StrictMode.DISALLOW_NETWORK | 545 StrictMode.PENALTY_DROPBOX); 546 } 547 548 Looper.loop(); 549 Slog.d(TAG, "System ServerThread is exiting!"); 550 } 551} 552 553public class SystemServer { 554 private static final String TAG = "SystemServer"; 555 556 public static final int FACTORY_TEST_OFF = 0; 557 public static final int FACTORY_TEST_LOW_LEVEL = 1; 558 public static final int FACTORY_TEST_HIGH_LEVEL = 2; 559 560 static Timer timer; 561 static final long SNAPSHOT_INTERVAL = 60 * 60 * 1000; // 1hr 562 563 /** 564 * This method is called from Zygote to initialize the system. This will cause the native 565 * services (SurfaceFlinger, AudioFlinger, etc..) to be started. After that it will call back 566 * up into init2() to start the Android services. 567 */ 568 native public static void init1(String[] args); 569 570 public static void main(String[] args) { 571 if (SamplingProfilerIntegration.isEnabled()) { 572 SamplingProfilerIntegration.start(); 573 timer = new Timer(); 574 timer.schedule(new TimerTask() { 575 @Override 576 public void run() { 577 SamplingProfilerIntegration.writeSnapshot("system_server", null); 578 } 579 }, SNAPSHOT_INTERVAL, SNAPSHOT_INTERVAL); 580 } 581 582 // The system server has to run all of the time, so it needs to be 583 // as efficient as possible with its memory usage. 584 VMRuntime.getRuntime().setTargetHeapUtilization(0.8f); 585 586 System.loadLibrary("android_servers"); 587 init1(args); 588 } 589 590 public static final void init2() { 591 Slog.i(TAG, "Entered the Android system server!"); 592 Thread thr = new ServerThread(); 593 thr.setName("android.server.ServerThread"); 594 thr.start(); 595 } 596} 597