SystemServer.java revision d2a458750e5a3d490af09cecb5c28370baf0a913
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 android.accounts.AccountManagerService; 20import android.app.ActivityManagerNative; 21import android.bluetooth.BluetoothAdapter; 22import android.content.ComponentName; 23import android.content.ContentResolver; 24import android.content.ContentService; 25import android.content.Context; 26import android.content.Intent; 27import android.content.pm.IPackageManager; 28import android.content.res.Configuration; 29import android.database.ContentObserver; 30import android.media.AudioService; 31import android.os.Looper; 32import android.os.RemoteException; 33import android.os.ServiceManager; 34import android.os.StrictMode; 35import android.os.SystemClock; 36import android.os.SystemProperties; 37import android.provider.Settings; 38import android.server.BluetoothA2dpService; 39import android.server.BluetoothService; 40import android.server.search.SearchManagerService; 41import android.util.DisplayMetrics; 42import android.util.EventLog; 43import android.util.Slog; 44import android.view.WindowManager; 45 46import com.android.internal.app.ShutdownThread; 47import com.android.internal.os.BinderInternal; 48import com.android.internal.os.SamplingProfilerIntegration; 49import com.android.server.accessibility.AccessibilityManagerService; 50import com.android.server.am.ActivityManagerService; 51import com.android.server.net.NetworkPolicyManagerService; 52import com.android.server.net.NetworkStatsService; 53import com.android.server.pm.PackageManagerService; 54import com.android.server.usb.UsbService; 55import com.android.server.wm.WindowManagerService; 56 57import dalvik.system.VMRuntime; 58import dalvik.system.Zygote; 59 60import java.io.File; 61import java.util.Timer; 62import java.util.TimerTask; 63 64class ServerThread extends Thread { 65 private static final String TAG = "SystemServer"; 66 67 ContentResolver mContentResolver; 68 69 private class AdbSettingsObserver extends ContentObserver { 70 public AdbSettingsObserver() { 71 super(null); 72 } 73 @Override 74 public void onChange(boolean selfChange) { 75 boolean enableAdb = (Settings.Secure.getInt(mContentResolver, 76 Settings.Secure.ADB_ENABLED, 0) > 0); 77 // setting this secure property will start or stop adbd 78 SystemProperties.set("persist.service.adb.enable", enableAdb ? "1" : "0"); 79 } 80 } 81 82 @Override 83 public void run() { 84 EventLog.writeEvent(EventLogTags.BOOT_PROGRESS_SYSTEM_RUN, 85 SystemClock.uptimeMillis()); 86 87 Looper.prepare(); 88 89 android.os.Process.setThreadPriority( 90 android.os.Process.THREAD_PRIORITY_FOREGROUND); 91 92 BinderInternal.disableBackgroundScheduling(true); 93 android.os.Process.setCanSelfBackground(false); 94 95 // Check whether we failed to shut down last time we tried. 96 { 97 final String shutdownAction = SystemProperties.get( 98 ShutdownThread.SHUTDOWN_ACTION_PROPERTY, ""); 99 if (shutdownAction != null && shutdownAction.length() > 0) { 100 boolean reboot = (shutdownAction.charAt(0) == '1'); 101 102 final String reason; 103 if (shutdownAction.length() > 1) { 104 reason = shutdownAction.substring(1, shutdownAction.length()); 105 } else { 106 reason = null; 107 } 108 109 ShutdownThread.rebootOrShutdown(reboot, reason); 110 } 111 } 112 113 String factoryTestStr = SystemProperties.get("ro.factorytest"); 114 int factoryTest = "".equals(factoryTestStr) ? SystemServer.FACTORY_TEST_OFF 115 : Integer.parseInt(factoryTestStr); 116 117 LightsService lights = null; 118 PowerManagerService power = null; 119 BatteryService battery = null; 120 AlarmManagerService alarm = null; 121 NetworkManagementService networkManagement = null; 122 NetworkStatsService networkStats = null; 123 NetworkPolicyManagerService networkPolicy = null; 124 ConnectivityService connectivity = null; 125 IPackageManager pm = null; 126 Context context = null; 127 WindowManagerService wm = null; 128 BluetoothService bluetooth = null; 129 BluetoothA2dpService bluetoothA2dp = null; 130 WiredAccessoryObserver wiredAccessory = null; 131 DockObserver dock = null; 132 UsbService usb = null; 133 UiModeManagerService uiMode = null; 134 RecognitionManagerService recognition = null; 135 ThrottleService throttle = null; 136 NetworkTimeUpdateService networkTimeUpdater = null; 137 138 // Critical services... 139 try { 140 Slog.i(TAG, "Entropy Service"); 141 ServiceManager.addService("entropy", new EntropyService()); 142 143 Slog.i(TAG, "Power Manager"); 144 power = new PowerManagerService(); 145 ServiceManager.addService(Context.POWER_SERVICE, power); 146 147 Slog.i(TAG, "Activity Manager"); 148 context = ActivityManagerService.main(factoryTest); 149 150 Slog.i(TAG, "Telephony Registry"); 151 ServiceManager.addService("telephony.registry", new TelephonyRegistry(context)); 152 153 AttributeCache.init(context); 154 155 Slog.i(TAG, "Package Manager"); 156 pm = PackageManagerService.main(context, 157 factoryTest != SystemServer.FACTORY_TEST_OFF); 158 159 ActivityManagerService.setSystemProcess(); 160 161 mContentResolver = context.getContentResolver(); 162 163 // The AccountManager must come before the ContentService 164 try { 165 Slog.i(TAG, "Account Manager"); 166 ServiceManager.addService(Context.ACCOUNT_SERVICE, 167 new AccountManagerService(context)); 168 } catch (Throwable e) { 169 Slog.e(TAG, "Failure starting Account Manager", e); 170 } 171 172 Slog.i(TAG, "Content Manager"); 173 ContentService.main(context, 174 factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL); 175 176 Slog.i(TAG, "System Content Providers"); 177 ActivityManagerService.installSystemProviders(); 178 179 Slog.i(TAG, "Lights Service"); 180 lights = new LightsService(context); 181 182 Slog.i(TAG, "Battery Service"); 183 battery = new BatteryService(context, lights); 184 ServiceManager.addService("battery", battery); 185 186 Slog.i(TAG, "Vibrator Service"); 187 ServiceManager.addService("vibrator", new VibratorService(context)); 188 189 // only initialize the power service after we have started the 190 // lights service, content providers and the battery service. 191 power.init(context, lights, ActivityManagerService.getDefault(), battery); 192 193 Slog.i(TAG, "Alarm Manager"); 194 alarm = new AlarmManagerService(context); 195 ServiceManager.addService(Context.ALARM_SERVICE, alarm); 196 197 Slog.i(TAG, "Init Watchdog"); 198 Watchdog.getInstance().init(context, battery, power, alarm, 199 ActivityManagerService.self()); 200 201 Slog.i(TAG, "Window Manager"); 202 wm = WindowManagerService.main(context, power, 203 factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL); 204 ServiceManager.addService(Context.WINDOW_SERVICE, wm); 205 206 ((ActivityManagerService)ServiceManager.getService("activity")) 207 .setWindowManager(wm); 208 209 // Skip Bluetooth if we have an emulator kernel 210 // TODO: Use a more reliable check to see if this product should 211 // support Bluetooth - see bug 988521 212 if (SystemProperties.get("ro.kernel.qemu").equals("1")) { 213 Slog.i(TAG, "No Bluetooh Service (emulator)"); 214 } else if (factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL) { 215 Slog.i(TAG, "No Bluetooth Service (factory test)"); 216 } else { 217 Slog.i(TAG, "Bluetooth Service"); 218 bluetooth = new BluetoothService(context); 219 ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, bluetooth); 220 bluetooth.initAfterRegistration(); 221 bluetoothA2dp = new BluetoothA2dpService(context, bluetooth); 222 ServiceManager.addService(BluetoothA2dpService.BLUETOOTH_A2DP_SERVICE, 223 bluetoothA2dp); 224 bluetooth.initAfterA2dpRegistration(); 225 226 int bluetoothOn = Settings.Secure.getInt(mContentResolver, 227 Settings.Secure.BLUETOOTH_ON, 0); 228 if (bluetoothOn > 0) { 229 bluetooth.enable(); 230 } 231 } 232 233 } catch (RuntimeException e) { 234 Slog.e("System", "Failure starting core service", e); 235 } 236 237 DevicePolicyManagerService devicePolicy = null; 238 StatusBarManagerService statusBar = null; 239 InputMethodManagerService imm = null; 240 AppWidgetService appWidget = null; 241 NotificationManagerService notification = null; 242 WallpaperManagerService wallpaper = null; 243 LocationManagerService location = null; 244 CountryDetectorService countryDetector = null; 245 246 if (factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL) { 247 try { 248 Slog.i(TAG, "Device Policy"); 249 devicePolicy = new DevicePolicyManagerService(context); 250 ServiceManager.addService(Context.DEVICE_POLICY_SERVICE, devicePolicy); 251 } catch (Throwable e) { 252 Slog.e(TAG, "Failure starting DevicePolicyService", e); 253 } 254 255 try { 256 Slog.i(TAG, "Status Bar"); 257 statusBar = new StatusBarManagerService(context, wm); 258 ServiceManager.addService(Context.STATUS_BAR_SERVICE, statusBar); 259 } catch (Throwable e) { 260 Slog.e(TAG, "Failure starting StatusBarManagerService", e); 261 } 262 263 try { 264 Slog.i(TAG, "Clipboard Service"); 265 ServiceManager.addService(Context.CLIPBOARD_SERVICE, 266 new ClipboardService(context)); 267 } catch (Throwable e) { 268 Slog.e(TAG, "Failure starting Clipboard Service", e); 269 } 270 271 try { 272 Slog.i(TAG, "Input Method Service"); 273 imm = new InputMethodManagerService(context, statusBar); 274 ServiceManager.addService(Context.INPUT_METHOD_SERVICE, imm); 275 } catch (Throwable e) { 276 Slog.e(TAG, "Failure starting Input Manager Service", e); 277 } 278 279 try { 280 Slog.i(TAG, "NetworkManagement Service"); 281 networkManagement = NetworkManagementService.create(context); 282 ServiceManager.addService(Context.NETWORKMANAGEMENT_SERVICE, networkManagement); 283 } catch (Throwable e) { 284 Slog.e(TAG, "Failure starting NetworkManagement Service", e); 285 } 286 287 try { 288 Slog.i(TAG, "NetworkStats Service"); 289 networkStats = new NetworkStatsService(context, networkManagement, alarm); 290 ServiceManager.addService(Context.NETWORK_STATS_SERVICE, networkStats); 291 } catch (Throwable e) { 292 Slog.e(TAG, "Failure starting NetworkStats Service", e); 293 } 294 295 try { 296 Slog.i(TAG, "NetworkPolicy Service"); 297 networkPolicy = new NetworkPolicyManagerService( 298 context, ActivityManagerService.self(), power, networkStats); 299 ServiceManager.addService(Context.NETWORK_POLICY_SERVICE, networkPolicy); 300 } catch (Throwable e) { 301 Slog.e(TAG, "Failure starting NetworkPolicy Service", e); 302 } 303 304 try { 305 Slog.i(TAG, "Connectivity Service"); 306 connectivity = new ConnectivityService(context, networkManagement, networkPolicy); 307 ServiceManager.addService(Context.CONNECTIVITY_SERVICE, connectivity); 308 networkStats.bindConnectivityManager(connectivity); 309 } catch (Throwable e) { 310 Slog.e(TAG, "Failure starting Connectivity Service", e); 311 } 312 313 try { 314 Slog.i(TAG, "Throttle Service"); 315 throttle = new ThrottleService(context); 316 ServiceManager.addService( 317 Context.THROTTLE_SERVICE, throttle); 318 } catch (Throwable e) { 319 Slog.e(TAG, "Failure starting ThrottleService", e); 320 } 321 322 try { 323 Slog.i(TAG, "Accessibility Manager"); 324 ServiceManager.addService(Context.ACCESSIBILITY_SERVICE, 325 new AccessibilityManagerService(context)); 326 } catch (Throwable e) { 327 Slog.e(TAG, "Failure starting Accessibility Manager", e); 328 } 329 330 try { 331 /* 332 * NotificationManagerService is dependant on MountService, 333 * (for media / usb notifications) so we must start MountService first. 334 */ 335 Slog.i(TAG, "Mount Service"); 336 ServiceManager.addService("mount", new MountService(context)); 337 } catch (Throwable e) { 338 Slog.e(TAG, "Failure starting Mount Service", e); 339 } 340 341 try { 342 Slog.i(TAG, "Notification Manager"); 343 notification = new NotificationManagerService(context, statusBar, lights); 344 ServiceManager.addService(Context.NOTIFICATION_SERVICE, notification); 345 } catch (Throwable e) { 346 Slog.e(TAG, "Failure starting Notification Manager", e); 347 } 348 349 try { 350 Slog.i(TAG, "Device Storage Monitor"); 351 ServiceManager.addService(DeviceStorageMonitorService.SERVICE, 352 new DeviceStorageMonitorService(context)); 353 } catch (Throwable e) { 354 Slog.e(TAG, "Failure starting DeviceStorageMonitor service", e); 355 } 356 357 try { 358 Slog.i(TAG, "Location Manager"); 359 location = new LocationManagerService(context); 360 ServiceManager.addService(Context.LOCATION_SERVICE, location); 361 } catch (Throwable e) { 362 Slog.e(TAG, "Failure starting Location Manager", e); 363 } 364 365 try { 366 Slog.i(TAG, "Country Detector"); 367 countryDetector = new CountryDetectorService(context); 368 ServiceManager.addService(Context.COUNTRY_DETECTOR, countryDetector); 369 } catch (Throwable e) { 370 Slog.e(TAG, "Failure starting Country Detector", e); 371 } 372 373 try { 374 Slog.i(TAG, "Search Service"); 375 ServiceManager.addService(Context.SEARCH_SERVICE, 376 new SearchManagerService(context)); 377 } catch (Throwable e) { 378 Slog.e(TAG, "Failure starting Search Service", e); 379 } 380 381 try { 382 Slog.i(TAG, "DropBox Service"); 383 ServiceManager.addService(Context.DROPBOX_SERVICE, 384 new DropBoxManagerService(context, new File("/data/system/dropbox"))); 385 } catch (Throwable e) { 386 Slog.e(TAG, "Failure starting DropBoxManagerService", e); 387 } 388 389 try { 390 Slog.i(TAG, "Wallpaper Service"); 391 wallpaper = new WallpaperManagerService(context); 392 ServiceManager.addService(Context.WALLPAPER_SERVICE, wallpaper); 393 } catch (Throwable e) { 394 Slog.e(TAG, "Failure starting Wallpaper Service", e); 395 } 396 397 try { 398 Slog.i(TAG, "Audio Service"); 399 ServiceManager.addService(Context.AUDIO_SERVICE, new AudioService(context)); 400 } catch (Throwable e) { 401 Slog.e(TAG, "Failure starting Audio Service", e); 402 } 403 404 try { 405 Slog.i(TAG, "Dock Observer"); 406 // Listen for dock station changes 407 dock = new DockObserver(context, power); 408 } catch (Throwable e) { 409 Slog.e(TAG, "Failure starting DockObserver", e); 410 } 411 412 try { 413 Slog.i(TAG, "Wired Accessory Observer"); 414 // Listen for wired headset changes 415 wiredAccessory = new WiredAccessoryObserver(context); 416 } catch (Throwable e) { 417 Slog.e(TAG, "Failure starting WiredAccessoryObserver", e); 418 } 419 420 try { 421 Slog.i(TAG, "USB Observer"); 422 // Listen for USB changes 423 usb = new UsbService(context); 424 ServiceManager.addService(Context.USB_SERVICE, usb); 425 } catch (Throwable e) { 426 Slog.e(TAG, "Failure starting UsbService", e); 427 } 428 429 try { 430 Slog.i(TAG, "UI Mode Manager Service"); 431 // Listen for UI mode changes 432 uiMode = new UiModeManagerService(context); 433 } catch (Throwable e) { 434 Slog.e(TAG, "Failure starting UiModeManagerService", e); 435 } 436 437 try { 438 Slog.i(TAG, "Backup Service"); 439 ServiceManager.addService(Context.BACKUP_SERVICE, 440 new BackupManagerService(context)); 441 } catch (Throwable e) { 442 Slog.e(TAG, "Failure starting Backup Service", e); 443 } 444 445 try { 446 Slog.i(TAG, "AppWidget Service"); 447 appWidget = new AppWidgetService(context); 448 ServiceManager.addService(Context.APPWIDGET_SERVICE, appWidget); 449 } catch (Throwable e) { 450 Slog.e(TAG, "Failure starting AppWidget Service", e); 451 } 452 453 try { 454 Slog.i(TAG, "Recognition Service"); 455 recognition = new RecognitionManagerService(context); 456 } catch (Throwable e) { 457 Slog.e(TAG, "Failure starting Recognition Service", e); 458 } 459 460 try { 461 Slog.i(TAG, "DiskStats Service"); 462 ServiceManager.addService("diskstats", new DiskStatsService(context)); 463 } catch (Throwable e) { 464 Slog.e(TAG, "Failure starting DiskStats Service", e); 465 } 466 467 try { 468 // need to add this service even if SamplingProfilerIntegration.isEnabled() 469 // is false, because it is this service that detects system property change and 470 // turns on SamplingProfilerIntegration. Plus, when sampling profiler doesn't work, 471 // there is little overhead for running this service. 472 Slog.i(TAG, "SamplingProfiler Service"); 473 ServiceManager.addService("samplingprofiler", 474 new SamplingProfilerService(context)); 475 } catch (Throwable e) { 476 Slog.e(TAG, "Failure starting SamplingProfiler Service", e); 477 } 478 479 try { 480 Slog.i(TAG, "NetworkTimeUpdateService"); 481 networkTimeUpdater = new NetworkTimeUpdateService(context); 482 } catch (Throwable e) { 483 Slog.e(TAG, "Failure starting NetworkTimeUpdate service"); 484 } 485 } 486 487 // make sure the ADB_ENABLED setting value matches the secure property value 488 Settings.Secure.putInt(mContentResolver, Settings.Secure.ADB_ENABLED, 489 "1".equals(SystemProperties.get("persist.service.adb.enable")) ? 1 : 0); 490 491 // register observer to listen for settings changes 492 mContentResolver.registerContentObserver(Settings.Secure.getUriFor(Settings.Secure.ADB_ENABLED), 493 false, new AdbSettingsObserver()); 494 495 // Before things start rolling, be sure we have decided whether 496 // we are in safe mode. 497 final boolean safeMode = wm.detectSafeMode(); 498 if (safeMode) { 499 ActivityManagerService.self().enterSafeMode(); 500 // Post the safe mode state in the Zygote class 501 Zygote.systemInSafeMode = true; 502 // Disable the JIT for the system_server process 503 VMRuntime.getRuntime().disableJitCompilation(); 504 } else { 505 // Enable the JIT for the system_server process 506 VMRuntime.getRuntime().startJitCompilation(); 507 } 508 509 // It is now time to start up the app processes... 510 511 if (devicePolicy != null) { 512 devicePolicy.systemReady(); 513 } 514 515 if (notification != null) { 516 notification.systemReady(); 517 } 518 519 wm.systemReady(); 520 521 if (safeMode) { 522 ActivityManagerService.self().showSafeModeOverlay(); 523 } 524 525 // Update the configuration for this context by hand, because we're going 526 // to start using it before the config change done in wm.systemReady() will 527 // propagate to it. 528 Configuration config = wm.computeNewConfiguration(); 529 DisplayMetrics metrics = new DisplayMetrics(); 530 WindowManager w = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE); 531 w.getDefaultDisplay().getMetrics(metrics); 532 context.getResources().updateConfiguration(config, metrics); 533 534 power.systemReady(); 535 try { 536 pm.systemReady(); 537 } catch (RemoteException e) { 538 } 539 540 // These are needed to propagate to the runnable below. 541 final Context contextF = context; 542 final BatteryService batteryF = battery; 543 final NetworkStatsService networkStatsF = networkStats; 544 final NetworkPolicyManagerService networkPolicyF = networkPolicy; 545 final ConnectivityService connectivityF = connectivity; 546 final DockObserver dockF = dock; 547 final UsbService usbF = usb; 548 final ThrottleService throttleF = throttle; 549 final UiModeManagerService uiModeF = uiMode; 550 final AppWidgetService appWidgetF = appWidget; 551 final WallpaperManagerService wallpaperF = wallpaper; 552 final InputMethodManagerService immF = imm; 553 final RecognitionManagerService recognitionF = recognition; 554 final LocationManagerService locationF = location; 555 final CountryDetectorService countryDetectorF = countryDetector; 556 final NetworkTimeUpdateService networkTimeUpdaterF = networkTimeUpdater; 557 558 // We now tell the activity manager it is okay to run third party 559 // code. It will call back into us once it has gotten to the state 560 // where third party code can really run (but before it has actually 561 // started launching the initial applications), for us to complete our 562 // initialization. 563 ((ActivityManagerService)ActivityManagerNative.getDefault()) 564 .systemReady(new Runnable() { 565 public void run() { 566 Slog.i(TAG, "Making services ready"); 567 568 startSystemUi(contextF); 569 if (batteryF != null) batteryF.systemReady(); 570 if (networkStatsF != null) networkStatsF.systemReady(); 571 if (networkPolicyF != null) networkPolicyF.systemReady(); 572 if (connectivityF != null) connectivityF.systemReady(); 573 if (dockF != null) dockF.systemReady(); 574 if (usbF != null) usbF.systemReady(); 575 if (uiModeF != null) uiModeF.systemReady(); 576 if (recognitionF != null) recognitionF.systemReady(); 577 Watchdog.getInstance().start(); 578 579 // It is now okay to let the various system services start their 580 // third party code... 581 582 if (appWidgetF != null) appWidgetF.systemReady(safeMode); 583 if (wallpaperF != null) wallpaperF.systemReady(); 584 if (immF != null) immF.systemReady(); 585 if (locationF != null) locationF.systemReady(); 586 if (countryDetectorF != null) countryDetectorF.systemReady(); 587 if (throttleF != null) throttleF.systemReady(); 588 if (networkTimeUpdaterF != null) networkTimeUpdaterF.systemReady(); 589 } 590 }); 591 592 // For debug builds, log event loop stalls to dropbox for analysis. 593 if (StrictMode.conditionallyEnableDebugLogging()) { 594 Slog.i(TAG, "Enabled StrictMode for system server main thread."); 595 } 596 597 Looper.loop(); 598 Slog.d(TAG, "System ServerThread is exiting!"); 599 } 600 601 static final void startSystemUi(Context context) { 602 Intent intent = new Intent(); 603 intent.setComponent(new ComponentName("com.android.systemui", 604 "com.android.systemui.SystemUIService")); 605 Slog.d(TAG, "Starting service: " + intent); 606 context.startService(intent); 607 } 608} 609 610public class SystemServer { 611 private static final String TAG = "SystemServer"; 612 613 public static final int FACTORY_TEST_OFF = 0; 614 public static final int FACTORY_TEST_LOW_LEVEL = 1; 615 public static final int FACTORY_TEST_HIGH_LEVEL = 2; 616 617 static Timer timer; 618 static final long SNAPSHOT_INTERVAL = 60 * 60 * 1000; // 1hr 619 620 // The earliest supported time. We pick one day into 1970, to 621 // give any timezone code room without going into negative time. 622 private static final long EARLIEST_SUPPORTED_TIME = 86400 * 1000; 623 624 /** 625 * This method is called from Zygote to initialize the system. This will cause the native 626 * services (SurfaceFlinger, AudioFlinger, etc..) to be started. After that it will call back 627 * up into init2() to start the Android services. 628 */ 629 native public static void init1(String[] args); 630 631 public static void main(String[] args) { 632 if (System.currentTimeMillis() < EARLIEST_SUPPORTED_TIME) { 633 // If a device's clock is before 1970 (before 0), a lot of 634 // APIs crash dealing with negative numbers, notably 635 // java.io.File#setLastModified, so instead we fake it and 636 // hope that time from cell towers or NTP fixes it 637 // shortly. 638 Slog.w(TAG, "System clock is before 1970; setting to 1970."); 639 SystemClock.setCurrentTimeMillis(EARLIEST_SUPPORTED_TIME); 640 } 641 642 if (SamplingProfilerIntegration.isEnabled()) { 643 SamplingProfilerIntegration.start(); 644 timer = new Timer(); 645 timer.schedule(new TimerTask() { 646 @Override 647 public void run() { 648 SamplingProfilerIntegration.writeSnapshot("system_server", null); 649 } 650 }, SNAPSHOT_INTERVAL, SNAPSHOT_INTERVAL); 651 } 652 653 // Mmmmmm... more memory! 654 dalvik.system.VMRuntime.getRuntime().clearGrowthLimit(); 655 656 // The system server has to run all of the time, so it needs to be 657 // as efficient as possible with its memory usage. 658 VMRuntime.getRuntime().setTargetHeapUtilization(0.8f); 659 660 System.loadLibrary("android_servers"); 661 init1(args); 662 } 663 664 public static final void init2() { 665 Slog.i(TAG, "Entered the Android system server!"); 666 Thread thr = new ServerThread(); 667 thr.setName("android.server.ServerThread"); 668 thr.start(); 669 } 670} 671