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 17 package com.android.server; 18 19 import com.android.server.am.ActivityManagerService; 20 import com.android.server.usb.UsbService; 21 import com.android.internal.app.ShutdownThread; 22 import com.android.internal.os.BinderInternal; 23 import com.android.internal.os.SamplingProfilerIntegration; 24 25 import dalvik.system.VMRuntime; 26 import dalvik.system.Zygote; 27 28 import android.app.ActivityManagerNative; 29 import android.bluetooth.BluetoothAdapter; 30 import android.content.ComponentName; 31 import android.content.ContentResolver; 32 import android.content.ContentService; 33 import android.content.Context; 34 import android.content.Intent; 35 import android.content.pm.IPackageManager; 36 import android.database.ContentObserver; 37 import android.database.Cursor; 38 import android.media.AudioService; 39 import android.os.Looper; 40 import android.os.RemoteException; 41 import android.os.ServiceManager; 42 import android.os.StrictMode; 43 import android.os.SystemClock; 44 import android.os.SystemProperties; 45 import android.provider.Contacts.People; 46 import android.provider.Settings; 47 import android.server.BluetoothA2dpService; 48 import android.server.BluetoothService; 49 import android.server.search.SearchManagerService; 50 import android.util.EventLog; 51 import android.util.Log; 52 import android.util.Slog; 53 import android.accounts.AccountManagerService; 54 55 import java.io.File; 56 import java.util.Timer; 57 import java.util.TimerTask; 58 59 class ServerThread extends Thread { 60 private static final String TAG = "SystemServer"; 61 private final static boolean INCLUDE_DEMO = false; 62 63 private static final int LOG_BOOT_PROGRESS_SYSTEM_RUN = 3010; 64 65 private ContentResolver mContentResolver; 66 67 private class AdbSettingsObserver extends ContentObserver { AdbSettingsObserver()68 public AdbSettingsObserver() { 69 super(null); 70 } 71 @Override onChange(boolean selfChange)72 public void onChange(boolean selfChange) { 73 boolean enableAdb = (Settings.Secure.getInt(mContentResolver, 74 Settings.Secure.ADB_ENABLED, 0) > 0); 75 // setting this secure property will start or stop adbd 76 SystemProperties.set("persist.service.adb.enable", enableAdb ? "1" : "0"); 77 } 78 } 79 80 @Override run()81 public void run() { 82 EventLog.writeEvent(EventLogTags.BOOT_PROGRESS_SYSTEM_RUN, 83 SystemClock.uptimeMillis()); 84 85 Looper.prepare(); 86 87 android.os.Process.setThreadPriority( 88 android.os.Process.THREAD_PRIORITY_FOREGROUND); 89 90 BinderInternal.disableBackgroundScheduling(true); 91 android.os.Process.setCanSelfBackground(false); 92 93 // Check whether we failed to shut down last time we tried. 94 { 95 final String shutdownAction = SystemProperties.get( 96 ShutdownThread.SHUTDOWN_ACTION_PROPERTY, ""); 97 if (shutdownAction != null && shutdownAction.length() > 0) { 98 boolean reboot = (shutdownAction.charAt(0) == '1'); 99 100 final String reason; 101 if (shutdownAction.length() > 1) { 102 reason = shutdownAction.substring(1, shutdownAction.length()); 103 } else { 104 reason = null; 105 } 106 107 ShutdownThread.rebootOrShutdown(reboot, reason); 108 } 109 } 110 111 String factoryTestStr = SystemProperties.get("ro.factorytest"); 112 int factoryTest = "".equals(factoryTestStr) ? SystemServer.FACTORY_TEST_OFF 113 : Integer.parseInt(factoryTestStr); 114 115 LightsService lights = null; 116 PowerManagerService power = null; 117 BatteryService battery = null; 118 ConnectivityService connectivity = null; 119 IPackageManager pm = null; 120 Context context = null; 121 WindowManagerService wm = null; 122 BluetoothService bluetooth = null; 123 BluetoothA2dpService bluetoothA2dp = null; 124 HeadsetObserver headset = null; 125 DockObserver dock = null; 126 UsbService usb = null; 127 UiModeManagerService uiMode = null; 128 RecognitionManagerService recognition = null; 129 ThrottleService throttle = null; 130 131 // Critical services... 132 try { 133 Slog.i(TAG, "Entropy Service"); 134 ServiceManager.addService("entropy", new EntropyService()); 135 136 Slog.i(TAG, "Power Manager"); 137 power = new PowerManagerService(); 138 ServiceManager.addService(Context.POWER_SERVICE, power); 139 140 Slog.i(TAG, "Activity Manager"); 141 context = ActivityManagerService.main(factoryTest); 142 143 Slog.i(TAG, "Telephony Registry"); 144 ServiceManager.addService("telephony.registry", new TelephonyRegistry(context)); 145 146 AttributeCache.init(context); 147 148 Slog.i(TAG, "Package Manager"); 149 pm = PackageManagerService.main(context, 150 factoryTest != SystemServer.FACTORY_TEST_OFF); 151 152 ActivityManagerService.setSystemProcess(); 153 154 mContentResolver = context.getContentResolver(); 155 156 // The AccountManager must come before the ContentService 157 try { 158 Slog.i(TAG, "Account Manager"); 159 ServiceManager.addService(Context.ACCOUNT_SERVICE, 160 new AccountManagerService(context)); 161 } catch (Throwable e) { 162 Slog.e(TAG, "Failure starting Account Manager", e); 163 } 164 165 Slog.i(TAG, "Content Manager"); 166 ContentService.main(context, 167 factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL); 168 169 Slog.i(TAG, "System Content Providers"); 170 ActivityManagerService.installSystemProviders(); 171 172 Slog.i(TAG, "Battery Service"); 173 battery = new BatteryService(context); 174 ServiceManager.addService("battery", battery); 175 176 Slog.i(TAG, "Lights Service"); 177 lights = new LightsService(context); 178 179 Slog.i(TAG, "Vibrator Service"); 180 ServiceManager.addService("vibrator", new VibratorService(context)); 181 182 // only initialize the power service after we have started the 183 // lights service, content providers and the battery service. 184 power.init(context, lights, ActivityManagerService.getDefault(), battery); 185 186 Slog.i(TAG, "Alarm Manager"); 187 AlarmManagerService alarm = new AlarmManagerService(context); 188 ServiceManager.addService(Context.ALARM_SERVICE, alarm); 189 190 Slog.i(TAG, "Init Watchdog"); 191 Watchdog.getInstance().init(context, battery, power, alarm, 192 ActivityManagerService.self()); 193 194 Slog.i(TAG, "Window Manager"); 195 wm = WindowManagerService.main(context, power, 196 factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL); 197 ServiceManager.addService(Context.WINDOW_SERVICE, wm); 198 199 ((ActivityManagerService)ServiceManager.getService("activity")) 200 .setWindowManager(wm); 201 202 // Skip Bluetooth if we have an emulator kernel 203 // TODO: Use a more reliable check to see if this product should 204 // support Bluetooth - see bug 988521 205 if (SystemProperties.get("ro.kernel.qemu").equals("1")) { 206 Slog.i(TAG, "Registering null Bluetooth Service (emulator)"); 207 ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, null); 208 } else if (factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL) { 209 Slog.i(TAG, "Registering null Bluetooth Service (factory test)"); 210 ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, null); 211 } else { 212 Slog.i(TAG, "Bluetooth Service"); 213 bluetooth = new BluetoothService(context); 214 ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, bluetooth); 215 bluetooth.initAfterRegistration(); 216 bluetoothA2dp = new BluetoothA2dpService(context, bluetooth); 217 ServiceManager.addService(BluetoothA2dpService.BLUETOOTH_A2DP_SERVICE, 218 bluetoothA2dp); 219 220 int bluetoothOn = Settings.Secure.getInt(mContentResolver, 221 Settings.Secure.BLUETOOTH_ON, 0); 222 if (bluetoothOn > 0) { 223 bluetooth.enable(); 224 } 225 } 226 227 } catch (RuntimeException e) { 228 Slog.e("System", "Failure starting core service", e); 229 } 230 231 DevicePolicyManagerService devicePolicy = null; 232 StatusBarManagerService statusBar = null; 233 InputMethodManagerService imm = null; 234 AppWidgetService appWidget = null; 235 NotificationManagerService notification = null; 236 WallpaperManagerService wallpaper = null; 237 LocationManagerService location = 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, "Search Service"); 350 ServiceManager.addService(Context.SEARCH_SERVICE, 351 new SearchManagerService(context)); 352 } catch (Throwable e) { 353 Slog.e(TAG, "Failure starting Search Service", e); 354 } 355 356 if (INCLUDE_DEMO) { 357 Slog.i(TAG, "Installing demo data..."); 358 (new DemoThread(context)).start(); 359 } 360 361 try { 362 Slog.i(TAG, "DropBox Service"); 363 ServiceManager.addService(Context.DROPBOX_SERVICE, 364 new DropBoxManagerService(context, new File("/data/system/dropbox"))); 365 } catch (Throwable e) { 366 Slog.e(TAG, "Failure starting DropBoxManagerService", e); 367 } 368 369 try { 370 Slog.i(TAG, "Wallpaper Service"); 371 wallpaper = new WallpaperManagerService(context); 372 ServiceManager.addService(Context.WALLPAPER_SERVICE, wallpaper); 373 } catch (Throwable e) { 374 Slog.e(TAG, "Failure starting Wallpaper Service", e); 375 } 376 377 try { 378 Slog.i(TAG, "Audio Service"); 379 ServiceManager.addService(Context.AUDIO_SERVICE, new AudioService(context)); 380 } catch (Throwable e) { 381 Slog.e(TAG, "Failure starting Audio Service", e); 382 } 383 384 try { 385 Slog.i(TAG, "Headset Observer"); 386 // Listen for wired headset changes 387 headset = new HeadsetObserver(context); 388 } catch (Throwable e) { 389 Slog.e(TAG, "Failure starting HeadsetObserver", e); 390 } 391 392 try { 393 Slog.i(TAG, "Dock Observer"); 394 // Listen for dock station changes 395 dock = new DockObserver(context, power); 396 } catch (Throwable e) { 397 Slog.e(TAG, "Failure starting DockObserver", e); 398 } 399 400 try { 401 Slog.i(TAG, "USB Service"); 402 // Listen for USB changes 403 usb = new UsbService(context); 404 ServiceManager.addService(Context.USB_SERVICE, usb); 405 } catch (Throwable e) { 406 Slog.e(TAG, "Failure starting UsbService", e); 407 } 408 409 try { 410 Slog.i(TAG, "UI Mode Manager Service"); 411 // Listen for UI mode changes 412 uiMode = new UiModeManagerService(context); 413 } catch (Throwable e) { 414 Slog.e(TAG, "Failure starting UiModeManagerService", e); 415 } 416 417 try { 418 Slog.i(TAG, "Backup Service"); 419 ServiceManager.addService(Context.BACKUP_SERVICE, 420 new BackupManagerService(context)); 421 } catch (Throwable e) { 422 Slog.e(TAG, "Failure starting Backup Service", e); 423 } 424 425 try { 426 Slog.i(TAG, "AppWidget Service"); 427 appWidget = new AppWidgetService(context); 428 ServiceManager.addService(Context.APPWIDGET_SERVICE, appWidget); 429 } catch (Throwable e) { 430 Slog.e(TAG, "Failure starting AppWidget Service", e); 431 } 432 433 try { 434 Slog.i(TAG, "Recognition Service"); 435 recognition = new RecognitionManagerService(context); 436 } catch (Throwable e) { 437 Slog.e(TAG, "Failure starting Recognition Service", e); 438 } 439 440 try { 441 Slog.i(TAG, "DiskStats Service"); 442 ServiceManager.addService("diskstats", new DiskStatsService(context)); 443 } catch (Throwable e) { 444 Slog.e(TAG, "Failure starting DiskStats Service", e); 445 } 446 } 447 448 // make sure the ADB_ENABLED setting value matches the secure property value 449 Settings.Secure.putInt(mContentResolver, Settings.Secure.ADB_ENABLED, 450 "1".equals(SystemProperties.get("persist.service.adb.enable")) ? 1 : 0); 451 452 // register observer to listen for settings changes 453 mContentResolver.registerContentObserver(Settings.Secure.getUriFor(Settings.Secure.ADB_ENABLED), 454 false, new AdbSettingsObserver()); 455 456 // Before things start rolling, be sure we have decided whether 457 // we are in safe mode. 458 final boolean safeMode = wm.detectSafeMode(); 459 if (safeMode) { 460 try { 461 ActivityManagerNative.getDefault().enterSafeMode(); 462 // Post the safe mode state in the Zygote class 463 Zygote.systemInSafeMode = true; 464 // Disable the JIT for the system_server process 465 VMRuntime.getRuntime().disableJitCompilation(); 466 } catch (RemoteException e) { 467 } 468 } else { 469 // Enable the JIT for the system_server process 470 VMRuntime.getRuntime().startJitCompilation(); 471 } 472 473 // It is now time to start up the app processes... 474 475 if (devicePolicy != null) { 476 devicePolicy.systemReady(); 477 } 478 479 if (notification != null) { 480 notification.systemReady(); 481 } 482 483 if (statusBar != null) { 484 statusBar.systemReady(); 485 } 486 wm.systemReady(); 487 power.systemReady(); 488 try { 489 pm.systemReady(); 490 } catch (RemoteException e) { 491 } 492 493 // These are needed to propagate to the runnable below. 494 final StatusBarManagerService statusBarF = statusBar; 495 final BatteryService batteryF = battery; 496 final ConnectivityService connectivityF = connectivity; 497 final DockObserver dockF = dock; 498 final UsbService usbF = usb; 499 final ThrottleService throttleF = throttle; 500 final UiModeManagerService uiModeF = uiMode; 501 final AppWidgetService appWidgetF = appWidget; 502 final WallpaperManagerService wallpaperF = wallpaper; 503 final InputMethodManagerService immF = imm; 504 final RecognitionManagerService recognitionF = recognition; 505 final LocationManagerService locationF = location; 506 507 // We now tell the activity manager it is okay to run third party 508 // code. It will call back into us once it has gotten to the state 509 // where third party code can really run (but before it has actually 510 // started launching the initial applications), for us to complete our 511 // initialization. 512 ((ActivityManagerService)ActivityManagerNative.getDefault()) 513 .systemReady(new Runnable() { 514 public void run() { 515 Slog.i(TAG, "Making services ready"); 516 517 if (statusBarF != null) statusBarF.systemReady2(); 518 if (batteryF != null) batteryF.systemReady(); 519 if (connectivityF != null) connectivityF.systemReady(); 520 if (dockF != null) dockF.systemReady(); 521 if (usbF != null) usbF.systemReady(); 522 if (uiModeF != null) uiModeF.systemReady(); 523 if (recognitionF != null) recognitionF.systemReady(); 524 Watchdog.getInstance().start(); 525 526 // It is now okay to let the various system services start their 527 // third party code... 528 529 if (appWidgetF != null) appWidgetF.systemReady(safeMode); 530 if (wallpaperF != null) wallpaperF.systemReady(); 531 if (immF != null) immF.systemReady(); 532 if (locationF != null) locationF.systemReady(); 533 if (throttleF != null) throttleF.systemReady(); 534 } 535 }); 536 537 // For debug builds, log event loop stalls to dropbox for analysis. 538 if (StrictMode.conditionallyEnableDebugLogging()) { 539 Slog.i(TAG, "Enabled StrictMode for system server main thread."); 540 } 541 542 Looper.loop(); 543 Slog.d(TAG, "System ServerThread is exiting!"); 544 } 545 } 546 547 class DemoThread extends Thread 548 { DemoThread(Context context)549 DemoThread(Context context) 550 { 551 mContext = context; 552 } 553 554 @Override run()555 public void run() 556 { 557 try { 558 Cursor c = mContext.getContentResolver().query(People.CONTENT_URI, null, null, null, null); 559 boolean hasData = c != null && c.moveToFirst(); 560 if (c != null) { 561 c.deactivate(); 562 } 563 if (!hasData) { 564 DemoDataSet dataset = new DemoDataSet(); 565 dataset.add(mContext); 566 } 567 } catch (Throwable e) { 568 Slog.e("SystemServer", "Failure installing demo data", e); 569 } 570 571 } 572 573 Context mContext; 574 } 575 576 public class SystemServer 577 { 578 private static final String TAG = "SystemServer"; 579 580 public static final int FACTORY_TEST_OFF = 0; 581 public static final int FACTORY_TEST_LOW_LEVEL = 1; 582 public static final int FACTORY_TEST_HIGH_LEVEL = 2; 583 584 static Timer timer; 585 static final long SNAPSHOT_INTERVAL = 60 * 60 * 1000; // 1hr 586 587 // The earliest supported time. We pick one day into 1970, to 588 // give any timezone code room without going into negative time. 589 private static final long EARLIEST_SUPPORTED_TIME = 86400 * 1000; 590 591 /** 592 * This method is called from Zygote to initialize the system. This will cause the native 593 * services (SurfaceFlinger, AudioFlinger, etc..) to be started. After that it will call back 594 * up into init2() to start the Android services. 595 */ init1(String[] args)596 native public static void init1(String[] args); 597 main(String[] args)598 public static void main(String[] args) { 599 if (System.currentTimeMillis() < EARLIEST_SUPPORTED_TIME) { 600 // If a device's clock is before 1970 (before 0), a lot of 601 // APIs crash dealing with negative numbers, notably 602 // java.io.File#setLastModified, so instead we fake it and 603 // hope that time from cell towers or NTP fixes it 604 // shortly. 605 Slog.w(TAG, "System clock is before 1970; setting to 1970."); 606 SystemClock.setCurrentTimeMillis(EARLIEST_SUPPORTED_TIME); 607 } 608 609 if (SamplingProfilerIntegration.isEnabled()) { 610 SamplingProfilerIntegration.start(); 611 timer = new Timer(); 612 timer.schedule(new TimerTask() { 613 @Override 614 public void run() { 615 SamplingProfilerIntegration.writeSnapshot("system_server"); 616 } 617 }, SNAPSHOT_INTERVAL, SNAPSHOT_INTERVAL); 618 } 619 620 // The system server has to run all of the time, so it needs to be 621 // as efficient as possible with its memory usage. 622 VMRuntime.getRuntime().setTargetHeapUtilization(0.8f); 623 624 System.loadLibrary("android_servers"); 625 init1(args); 626 } 627 init2()628 public static final void init2() { 629 Slog.i(TAG, "Entered the Android system server!"); 630 Thread thr = new ServerThread(); 631 thr.setName("android.server.ServerThread"); 632 thr.start(); 633 } 634 } 635