SystemServer.java revision cd0e839a2448deea50f79bddeba782c546b33893
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.app.ShutdownThread; 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.content.res.Configuration; 35import android.database.ContentObserver; 36import android.media.AudioService; 37import android.os.Build; 38import android.os.Looper; 39import android.os.RemoteException; 40import android.os.ServiceManager; 41import android.os.StrictMode; 42import android.os.SystemClock; 43import android.os.SystemProperties; 44import android.provider.Contacts.People; 45import android.provider.Settings; 46import android.server.BluetoothA2dpService; 47import android.server.BluetoothService; 48import android.server.search.SearchManagerService; 49import android.util.DisplayMetrics; 50import android.util.EventLog; 51import android.util.Log; 52import android.util.Slog; 53import android.view.Display; 54import android.view.WindowManager; 55 56import java.io.File; 57import java.util.Timer; 58import java.util.TimerTask; 59 60class ServerThread extends Thread { 61 private static final String TAG = "SystemServer"; 62 63 ContentResolver mContentResolver; 64 65 private class AdbSettingsObserver extends ContentObserver { 66 public AdbSettingsObserver() { 67 super(null); 68 } 69 @Override 70 public void onChange(boolean selfChange) { 71 boolean enableAdb = (Settings.Secure.getInt(mContentResolver, 72 Settings.Secure.ADB_ENABLED, 0) > 0); 73 // setting this secure property will start or stop adbd 74 SystemProperties.set("persist.service.adb.enable", enableAdb ? "1" : "0"); 75 } 76 } 77 78 @Override 79 public void run() { 80 EventLog.writeEvent(EventLogTags.BOOT_PROGRESS_SYSTEM_RUN, 81 SystemClock.uptimeMillis()); 82 83 Looper.prepare(); 84 85 android.os.Process.setThreadPriority( 86 android.os.Process.THREAD_PRIORITY_FOREGROUND); 87 88 BinderInternal.disableBackgroundScheduling(true); 89 android.os.Process.setCanSelfBackground(false); 90 91 // Check whether we failed to shut down last time we tried. 92 { 93 final String shutdownAction = SystemProperties.get( 94 ShutdownThread.SHUTDOWN_ACTION_PROPERTY, ""); 95 if (shutdownAction != null && shutdownAction.length() > 0) { 96 boolean reboot = (shutdownAction.charAt(0) == '1'); 97 98 final String reason; 99 if (shutdownAction.length() > 1) { 100 reason = shutdownAction.substring(1, shutdownAction.length()); 101 } else { 102 reason = null; 103 } 104 105 ShutdownThread.rebootOrShutdown(reboot, reason); 106 } 107 } 108 109 String factoryTestStr = SystemProperties.get("ro.factorytest"); 110 int factoryTest = "".equals(factoryTestStr) ? SystemServer.FACTORY_TEST_OFF 111 : Integer.parseInt(factoryTestStr); 112 113 LightsService lights = null; 114 PowerManagerService power = null; 115 BatteryService battery = null; 116 ConnectivityService connectivity = null; 117 IPackageManager pm = null; 118 Context context = null; 119 WindowManagerService wm = null; 120 BluetoothService bluetooth = null; 121 BluetoothA2dpService bluetoothA2dp = null; 122 HeadsetObserver headset = null; 123 DockObserver dock = null; 124 UsbObserver usb = null; 125 UiModeManagerService uiMode = null; 126 RecognitionManagerService recognition = null; 127 ThrottleService throttle = null; 128 NetworkTimeUpdateService networkTimeUpdater = null; 129 130 // Critical services... 131 try { 132 Slog.i(TAG, "Entropy Service"); 133 ServiceManager.addService("entropy", new EntropyService()); 134 135 Slog.i(TAG, "Power Manager"); 136 power = new PowerManagerService(); 137 ServiceManager.addService(Context.POWER_SERVICE, power); 138 139 Slog.i(TAG, "Activity Manager"); 140 context = ActivityManagerService.main(factoryTest); 141 142 Slog.i(TAG, "Telephony Registry"); 143 ServiceManager.addService("telephony.registry", new TelephonyRegistry(context)); 144 145 AttributeCache.init(context); 146 147 Slog.i(TAG, "Package Manager"); 148 pm = PackageManagerService.main(context, 149 factoryTest != SystemServer.FACTORY_TEST_OFF); 150 151 ActivityManagerService.setSystemProcess(); 152 153 mContentResolver = context.getContentResolver(); 154 155 // The AccountManager must come before the ContentService 156 try { 157 Slog.i(TAG, "Account Manager"); 158 ServiceManager.addService(Context.ACCOUNT_SERVICE, 159 new AccountManagerService(context)); 160 } catch (Throwable e) { 161 Slog.e(TAG, "Failure starting Account Manager", e); 162 } 163 164 Slog.i(TAG, "Content Manager"); 165 ContentService.main(context, 166 factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL); 167 168 Slog.i(TAG, "System Content Providers"); 169 ActivityManagerService.installSystemProviders(); 170 171 Slog.i(TAG, "Battery Service"); 172 battery = new BatteryService(context); 173 ServiceManager.addService("battery", battery); 174 175 Slog.i(TAG, "Lights Service"); 176 lights = new LightsService(context); 177 178 Slog.i(TAG, "Vibrator Service"); 179 ServiceManager.addService("vibrator", new VibratorService(context)); 180 181 // only initialize the power service after we have started the 182 // lights service, content providers and the battery service. 183 power.init(context, lights, ActivityManagerService.getDefault(), battery); 184 185 Slog.i(TAG, "Alarm Manager"); 186 AlarmManagerService alarm = new AlarmManagerService(context); 187 ServiceManager.addService(Context.ALARM_SERVICE, alarm); 188 189 Slog.i(TAG, "Init Watchdog"); 190 Watchdog.getInstance().init(context, battery, power, alarm, 191 ActivityManagerService.self()); 192 193 Slog.i(TAG, "Window Manager"); 194 wm = WindowManagerService.main(context, power, 195 factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL); 196 ServiceManager.addService(Context.WINDOW_SERVICE, wm); 197 198 ((ActivityManagerService)ServiceManager.getService("activity")) 199 .setWindowManager(wm); 200 201 // Skip Bluetooth if we have an emulator kernel 202 // TODO: Use a more reliable check to see if this product should 203 // support Bluetooth - see bug 988521 204 if (SystemProperties.get("ro.kernel.qemu").equals("1")) { 205 Slog.i(TAG, "Registering null Bluetooth Service (emulator)"); 206 ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, null); 207 } else if (factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL) { 208 Slog.i(TAG, "Registering null Bluetooth Service (factory test)"); 209 ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, null); 210 } else { 211 Slog.i(TAG, "Bluetooth Service"); 212 bluetooth = new BluetoothService(context); 213 ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, bluetooth); 214 bluetooth.initAfterRegistration(); 215 bluetoothA2dp = new BluetoothA2dpService(context, bluetooth); 216 ServiceManager.addService(BluetoothA2dpService.BLUETOOTH_A2DP_SERVICE, 217 bluetoothA2dp); 218 219 int bluetoothOn = Settings.Secure.getInt(mContentResolver, 220 Settings.Secure.BLUETOOTH_ON, 0); 221 if (bluetoothOn > 0) { 222 bluetooth.enable(); 223 } 224 } 225 226 } catch (RuntimeException e) { 227 Slog.e("System", "Failure starting core service", e); 228 } 229 230 DevicePolicyManagerService devicePolicy = null; 231 StatusBarManagerService statusBar = null; 232 InputMethodManagerService imm = null; 233 AppWidgetService appWidget = null; 234 NotificationManagerService notification = null; 235 WallpaperManagerService wallpaper = null; 236 LocationManagerService location = null; 237 CountryDetectorService countryDetector = null; 238 239 if (factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL) { 240 try { 241 Slog.i(TAG, "Device Policy"); 242 devicePolicy = new DevicePolicyManagerService(context); 243 ServiceManager.addService(Context.DEVICE_POLICY_SERVICE, devicePolicy); 244 } catch (Throwable e) { 245 Slog.e(TAG, "Failure starting DevicePolicyService", e); 246 } 247 248 try { 249 Slog.i(TAG, "Status Bar"); 250 statusBar = new StatusBarManagerService(context); 251 ServiceManager.addService(Context.STATUS_BAR_SERVICE, statusBar); 252 } catch (Throwable e) { 253 Slog.e(TAG, "Failure starting StatusBarManagerService", e); 254 } 255 256 try { 257 Slog.i(TAG, "Clipboard Service"); 258 ServiceManager.addService(Context.CLIPBOARD_SERVICE, 259 new ClipboardService(context)); 260 } catch (Throwable e) { 261 Slog.e(TAG, "Failure starting Clipboard Service", e); 262 } 263 264 try { 265 Slog.i(TAG, "Input Method Service"); 266 imm = new InputMethodManagerService(context, statusBar); 267 ServiceManager.addService(Context.INPUT_METHOD_SERVICE, imm); 268 } catch (Throwable e) { 269 Slog.e(TAG, "Failure starting Input Manager Service", e); 270 } 271 272 try { 273 Slog.i(TAG, "NetStat Service"); 274 ServiceManager.addService("netstat", new NetStatService(context)); 275 } catch (Throwable e) { 276 Slog.e(TAG, "Failure starting NetStat Service", e); 277 } 278 279 try { 280 Slog.i(TAG, "NetworkManagement Service"); 281 ServiceManager.addService( 282 Context.NETWORKMANAGEMENT_SERVICE, 283 NetworkManagementService.create(context)); 284 } catch (Throwable e) { 285 Slog.e(TAG, "Failure starting NetworkManagement Service", e); 286 } 287 288 try { 289 Slog.i(TAG, "Connectivity Service"); 290 connectivity = ConnectivityService.getInstance(context); 291 ServiceManager.addService(Context.CONNECTIVITY_SERVICE, connectivity); 292 } catch (Throwable e) { 293 Slog.e(TAG, "Failure starting Connectivity Service", e); 294 } 295 296 try { 297 Slog.i(TAG, "Throttle Service"); 298 throttle = new ThrottleService(context); 299 ServiceManager.addService( 300 Context.THROTTLE_SERVICE, throttle); 301 } catch (Throwable e) { 302 Slog.e(TAG, "Failure starting ThrottleService", e); 303 } 304 305 try { 306 Slog.i(TAG, "Accessibility Manager"); 307 ServiceManager.addService(Context.ACCESSIBILITY_SERVICE, 308 new AccessibilityManagerService(context)); 309 } catch (Throwable e) { 310 Slog.e(TAG, "Failure starting Accessibility Manager", e); 311 } 312 313 try { 314 /* 315 * NotificationManagerService is dependant on MountService, 316 * (for media / usb notifications) so we must start MountService first. 317 */ 318 Slog.i(TAG, "Mount Service"); 319 ServiceManager.addService("mount", new MountService(context)); 320 } catch (Throwable e) { 321 Slog.e(TAG, "Failure starting Mount Service", e); 322 } 323 324 try { 325 Slog.i(TAG, "Notification Manager"); 326 notification = new NotificationManagerService(context, statusBar, lights); 327 ServiceManager.addService(Context.NOTIFICATION_SERVICE, notification); 328 } catch (Throwable e) { 329 Slog.e(TAG, "Failure starting Notification Manager", e); 330 } 331 332 try { 333 Slog.i(TAG, "Device Storage Monitor"); 334 ServiceManager.addService(DeviceStorageMonitorService.SERVICE, 335 new DeviceStorageMonitorService(context)); 336 } catch (Throwable e) { 337 Slog.e(TAG, "Failure starting DeviceStorageMonitor service", e); 338 } 339 340 try { 341 Slog.i(TAG, "Location Manager"); 342 location = new LocationManagerService(context); 343 ServiceManager.addService(Context.LOCATION_SERVICE, location); 344 } catch (Throwable e) { 345 Slog.e(TAG, "Failure starting Location Manager", e); 346 } 347 348 try { 349 Slog.i(TAG, "Country Detector"); 350 countryDetector = new CountryDetectorService(context); 351 ServiceManager.addService(Context.COUNTRY_DETECTOR, countryDetector); 352 } catch (Throwable e) { 353 Slog.e(TAG, "Failure starting Country Detector", e); 354 } 355 356 try { 357 Slog.i(TAG, "Search Service"); 358 ServiceManager.addService(Context.SEARCH_SERVICE, 359 new SearchManagerService(context)); 360 } catch (Throwable e) { 361 Slog.e(TAG, "Failure starting Search Service", e); 362 } 363 364 try { 365 Slog.i(TAG, "DropBox Service"); 366 ServiceManager.addService(Context.DROPBOX_SERVICE, 367 new DropBoxManagerService(context, new File("/data/system/dropbox"))); 368 } catch (Throwable e) { 369 Slog.e(TAG, "Failure starting DropBoxManagerService", e); 370 } 371 372 try { 373 Slog.i(TAG, "Wallpaper Service"); 374 wallpaper = new WallpaperManagerService(context); 375 ServiceManager.addService(Context.WALLPAPER_SERVICE, wallpaper); 376 } catch (Throwable e) { 377 Slog.e(TAG, "Failure starting Wallpaper Service", e); 378 } 379 380 try { 381 Slog.i(TAG, "Audio Service"); 382 ServiceManager.addService(Context.AUDIO_SERVICE, new AudioService(context)); 383 } catch (Throwable e) { 384 Slog.e(TAG, "Failure starting Audio Service", e); 385 } 386 387 try { 388 Slog.i(TAG, "Headset Observer"); 389 // Listen for wired headset changes 390 headset = new HeadsetObserver(context); 391 } catch (Throwable e) { 392 Slog.e(TAG, "Failure starting HeadsetObserver", e); 393 } 394 395 try { 396 Slog.i(TAG, "Dock Observer"); 397 // Listen for dock station changes 398 dock = new DockObserver(context, power); 399 } catch (Throwable e) { 400 Slog.e(TAG, "Failure starting DockObserver", e); 401 } 402 403 try { 404 Slog.i(TAG, "USB Observer"); 405 // Listen for USB changes 406 usb = new UsbObserver(context); 407 } catch (Throwable e) { 408 Slog.e(TAG, "Failure starting UsbObserver", e); 409 } 410 411 try { 412 Slog.i(TAG, "UI Mode Manager Service"); 413 // Listen for UI mode changes 414 uiMode = new UiModeManagerService(context); 415 } catch (Throwable e) { 416 Slog.e(TAG, "Failure starting UiModeManagerService", e); 417 } 418 419 try { 420 Slog.i(TAG, "Backup Service"); 421 ServiceManager.addService(Context.BACKUP_SERVICE, 422 new BackupManagerService(context)); 423 } catch (Throwable e) { 424 Slog.e(TAG, "Failure starting Backup Service", e); 425 } 426 427 try { 428 Slog.i(TAG, "AppWidget Service"); 429 appWidget = new AppWidgetService(context); 430 ServiceManager.addService(Context.APPWIDGET_SERVICE, appWidget); 431 } catch (Throwable e) { 432 Slog.e(TAG, "Failure starting AppWidget Service", e); 433 } 434 435 try { 436 Slog.i(TAG, "Recognition Service"); 437 recognition = new RecognitionManagerService(context); 438 } catch (Throwable e) { 439 Slog.e(TAG, "Failure starting Recognition Service", e); 440 } 441 442 try { 443 Slog.i(TAG, "DiskStats Service"); 444 ServiceManager.addService("diskstats", new DiskStatsService(context)); 445 } catch (Throwable e) { 446 Slog.e(TAG, "Failure starting DiskStats Service", e); 447 } 448 449 try { 450 // need to add this service even if SamplingProfilerIntegration.isEnabled() 451 // is false, because it is this service that detects system property change and 452 // turns on SamplingProfilerIntegration. Plus, when sampling profiler doesn't work, 453 // there is little overhead for running this service. 454 Slog.i(TAG, "SamplingProfiler Service"); 455 ServiceManager.addService("samplingprofiler", 456 new SamplingProfilerService(context)); 457 } catch (Throwable e) { 458 Slog.e(TAG, "Failure starting SamplingProfiler Service", e); 459 } 460 461 try { 462 Slog.i(TAG, "NetworkTimeUpdateService"); 463 networkTimeUpdater = new NetworkTimeUpdateService(context); 464 } catch (Throwable e) { 465 Slog.e(TAG, "Failure starting NetworkTimeUpdate service"); 466 } 467 } 468 469 // make sure the ADB_ENABLED setting value matches the secure property value 470 Settings.Secure.putInt(mContentResolver, Settings.Secure.ADB_ENABLED, 471 "1".equals(SystemProperties.get("persist.service.adb.enable")) ? 1 : 0); 472 473 // register observer to listen for settings changes 474 mContentResolver.registerContentObserver(Settings.Secure.getUriFor(Settings.Secure.ADB_ENABLED), 475 false, new AdbSettingsObserver()); 476 477 // Before things start rolling, be sure we have decided whether 478 // we are in safe mode. 479 final boolean safeMode = wm.detectSafeMode(); 480 if (safeMode) { 481 try { 482 ActivityManagerNative.getDefault().enterSafeMode(); 483 // Post the safe mode state in the Zygote class 484 Zygote.systemInSafeMode = true; 485 // Disable the JIT for the system_server process 486 VMRuntime.getRuntime().disableJitCompilation(); 487 } catch (RemoteException e) { 488 } 489 } else { 490 // Enable the JIT for the system_server process 491 VMRuntime.getRuntime().startJitCompilation(); 492 } 493 494 // It is now time to start up the app processes... 495 496 if (devicePolicy != null) { 497 devicePolicy.systemReady(); 498 } 499 500 if (notification != null) { 501 notification.systemReady(); 502 } 503 504 if (statusBar != null) { 505 statusBar.systemReady(); 506 } 507 wm.systemReady(); 508 509 // Update the configuration for this context by hand, because we're going 510 // to start using it before the config change done in wm.systemReady() will 511 // propagate to it. 512 Configuration config = wm.computeNewConfiguration(); 513 DisplayMetrics metrics = new DisplayMetrics(); 514 WindowManager w = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE); 515 w.getDefaultDisplay().getMetrics(metrics); 516 context.getResources().updateConfiguration(config, metrics); 517 518 power.systemReady(); 519 try { 520 pm.systemReady(); 521 } catch (RemoteException e) { 522 } 523 524 // These are needed to propagate to the runnable below. 525 final StatusBarManagerService statusBarF = statusBar; 526 final BatteryService batteryF = battery; 527 final ConnectivityService connectivityF = connectivity; 528 final DockObserver dockF = dock; 529 final UsbObserver usbF = usb; 530 final ThrottleService throttleF = throttle; 531 final UiModeManagerService uiModeF = uiMode; 532 final AppWidgetService appWidgetF = appWidget; 533 final WallpaperManagerService wallpaperF = wallpaper; 534 final InputMethodManagerService immF = imm; 535 final RecognitionManagerService recognitionF = recognition; 536 final LocationManagerService locationF = location; 537 final CountryDetectorService countryDetectorF = countryDetector; 538 final NetworkTimeUpdateService networkTimeUpdaterF = networkTimeUpdater; 539 540 // We now tell the activity manager it is okay to run third party 541 // code. It will call back into us once it has gotten to the state 542 // where third party code can really run (but before it has actually 543 // started launching the initial applications), for us to complete our 544 // initialization. 545 ((ActivityManagerService)ActivityManagerNative.getDefault()) 546 .systemReady(new Runnable() { 547 public void run() { 548 Slog.i(TAG, "Making services ready"); 549 550 if (statusBarF != null) statusBarF.systemReady2(); 551 if (batteryF != null) batteryF.systemReady(); 552 if (connectivityF != null) connectivityF.systemReady(); 553 if (dockF != null) dockF.systemReady(); 554 if (usbF != null) usbF.systemReady(); 555 if (uiModeF != null) uiModeF.systemReady(); 556 if (recognitionF != null) recognitionF.systemReady(); 557 Watchdog.getInstance().start(); 558 559 // It is now okay to let the various system services start their 560 // third party code... 561 562 if (appWidgetF != null) appWidgetF.systemReady(safeMode); 563 if (wallpaperF != null) wallpaperF.systemReady(); 564 if (immF != null) immF.systemReady(); 565 if (locationF != null) locationF.systemReady(); 566 if (countryDetectorF != null) countryDetectorF.systemReady(); 567 if (throttleF != null) throttleF.systemReady(); 568 if (networkTimeUpdaterF != null) networkTimeUpdaterF.systemReady(); 569 } 570 }); 571 572 // For debug builds, log event loop stalls to dropbox for analysis. 573 if (StrictMode.conditionallyEnableDebugLogging()) { 574 Slog.i(TAG, "Enabled StrictMode for system server main thread."); 575 } 576 577 Looper.loop(); 578 Slog.d(TAG, "System ServerThread is exiting!"); 579 } 580} 581 582public class SystemServer { 583 private static final String TAG = "SystemServer"; 584 585 public static final int FACTORY_TEST_OFF = 0; 586 public static final int FACTORY_TEST_LOW_LEVEL = 1; 587 public static final int FACTORY_TEST_HIGH_LEVEL = 2; 588 589 static Timer timer; 590 static final long SNAPSHOT_INTERVAL = 60 * 60 * 1000; // 1hr 591 592 // The earliest supported time. We pick one day into 1970, to 593 // give any timezone code room without going into negative time. 594 private static final long EARLIEST_SUPPORTED_TIME = 86400 * 1000; 595 596 /** 597 * This method is called from Zygote to initialize the system. This will cause the native 598 * services (SurfaceFlinger, AudioFlinger, etc..) to be started. After that it will call back 599 * up into init2() to start the Android services. 600 */ 601 native public static void init1(String[] args); 602 603 public static void main(String[] args) { 604 if (System.currentTimeMillis() < EARLIEST_SUPPORTED_TIME) { 605 // If a device's clock is before 1970 (before 0), a lot of 606 // APIs crash dealing with negative numbers, notably 607 // java.io.File#setLastModified, so instead we fake it and 608 // hope that time from cell towers or NTP fixes it 609 // shortly. 610 Slog.w(TAG, "System clock is before 1970; setting to 1970."); 611 SystemClock.setCurrentTimeMillis(EARLIEST_SUPPORTED_TIME); 612 } 613 614 if (SamplingProfilerIntegration.isEnabled()) { 615 SamplingProfilerIntegration.start(); 616 timer = new Timer(); 617 timer.schedule(new TimerTask() { 618 @Override 619 public void run() { 620 SamplingProfilerIntegration.writeSnapshot("system_server", null); 621 } 622 }, SNAPSHOT_INTERVAL, SNAPSHOT_INTERVAL); 623 } 624 625 // The system server has to run all of the time, so it needs to be 626 // as efficient as possible with its memory usage. 627 VMRuntime.getRuntime().setTargetHeapUtilization(0.8f); 628 629 System.loadLibrary("android_servers"); 630 init1(args); 631 } 632 633 public static final void init2() { 634 Slog.i(TAG, "Entered the Android system server!"); 635 Thread thr = new ServerThread(); 636 thr.setName("android.server.ServerThread"); 637 thr.start(); 638 } 639} 640