SystemServer.java revision 54b6cfa9a9e5b861a9930af873580d6dc20f773c
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.app.ActivityManagerNative; 20import android.content.ContentResolver; 21import android.content.ContentService; 22import android.content.Context; 23import android.content.pm.IPackageManager; 24import android.database.ContentObserver; 25import android.database.Cursor; 26import android.media.AudioService; 27import android.os.Looper; 28import android.os.RemoteException; 29import android.os.ServiceManager; 30import android.os.SystemClock; 31import android.os.SystemProperties; 32import android.os.IBinder; 33import android.provider.Settings; 34import android.provider.Contacts.People; 35import android.server.BluetoothDeviceService; 36import android.server.checkin.FallbackCheckinService; 37import android.server.search.SearchManagerService; 38import android.util.EventLog; 39import android.util.Log; 40 41import dalvik.system.VMRuntime; 42 43import com.android.server.am.ActivityManagerService; 44import com.android.server.status.StatusBarService; 45 46import java.lang.reflect.Constructor; 47import java.lang.reflect.InvocationTargetException; 48 49 50class ServerThread extends Thread { 51 private static final String TAG = "SystemServer"; 52 private final static boolean INCLUDE_DEMO = false; 53 54 private static final int LOG_BOOT_PROGRESS_SYSTEM_RUN = 3010; 55 56 private ContentResolver mContentResolver; 57 58 private class AdbSettingsObserver extends ContentObserver { 59 public AdbSettingsObserver() { 60 super(null); 61 } 62 @Override 63 public void onChange(boolean selfChange) { 64 boolean enableAdb = (Settings.System.getInt(mContentResolver, 65 Settings.System.ADB_ENABLED, 0) > 0); 66 // setting this system property will start or stop adbd 67 SystemProperties.set("persist.service.adb.enable", enableAdb ? "1" : "0"); 68 } 69 } 70 71 @Override 72 public void run() { 73 EventLog.writeEvent(LOG_BOOT_PROGRESS_SYSTEM_RUN, 74 SystemClock.uptimeMillis()); 75 76 ActivityManagerService.prepareTraceFile(false); // create dir 77 78 Looper.prepare(); 79 80 android.os.Process.setThreadPriority( 81 android.os.Process.THREAD_PRIORITY_FOREGROUND); 82 83 String factoryTestStr = SystemProperties.get("ro.factorytest"); 84 int factoryTest = "".equals(factoryTestStr) ? SystemServer.FACTORY_TEST_OFF 85 : Integer.parseInt(factoryTestStr); 86 87 PowerManagerService power = null; 88 IPackageManager pm = null; 89 Context context = null; 90 WindowManagerService wm = null; 91 BluetoothDeviceService bluetooth = null; 92 HeadsetObserver headset = null; 93 94 // Critical services... 95 try { 96 Log.i(TAG, "Starting Power Manager."); 97 power = new PowerManagerService(); 98 ServiceManager.addService(Context.POWER_SERVICE, power); 99 100 Log.i(TAG, "Starting Activity Manager."); 101 context = ActivityManagerService.main(factoryTest); 102 103 Log.i(TAG, "Starting telephony registry"); 104 ServiceManager.addService("telephony.registry", new TelephonyRegistry(context)); 105 106 AttributeCache.init(context); 107 108 Log.i(TAG, "Starting Package Manager."); 109 pm = PackageManagerService.main(context, 110 factoryTest != SystemServer.FACTORY_TEST_OFF); 111 112 ActivityManagerService.setSystemProcess(); 113 114 mContentResolver = context.getContentResolver(); 115 116 Log.i(TAG, "Starting Content Manager."); 117 ContentService.main(context, 118 factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL); 119 120 Log.i(TAG, "Starting System Content Providers."); 121 ActivityManagerService.installSystemProviders(); 122 123 Log.i(TAG, "Starting Battery Service."); 124 BatteryService battery = new BatteryService(context); 125 ServiceManager.addService("battery", battery); 126 127 // only initialize the power service after we have started the 128 // content providers and the batter service. 129 power.init(context, ActivityManagerService.getDefault(), battery); 130 131 Log.i(TAG, "Starting Alarm Manager."); 132 AlarmManagerService alarm = new AlarmManagerService(context); 133 ServiceManager.addService(Context.ALARM_SERVICE, alarm); 134 135 Watchdog.getInstance().init(context, battery, power, alarm, 136 ActivityManagerService.self()); 137 138 // Sensor Service is needed by Window Manager, so this goes first 139 Log.i(TAG, "Starting Sensor Service."); 140 ServiceManager.addService(Context.SENSOR_SERVICE, new SensorService(context)); 141 142 Log.i(TAG, "Starting Window Manager."); 143 wm = WindowManagerService.main(context, power); 144 ServiceManager.addService(Context.WINDOW_SERVICE, wm); 145 146 ((ActivityManagerService)ServiceManager.getService("activity")) 147 .setWindowManager(wm); 148 149 // Skip Bluetooth if we have an emulator kernel 150 // TODO: Use a more reliable check to see if this product should 151 // support Bluetooth - see bug 988521 152 if (SystemProperties.get("ro.kernel.qemu").equals("1")) { 153 Log.i(TAG, "Registering null Bluetooth Service (emulator)"); 154 ServiceManager.addService(Context.BLUETOOTH_SERVICE, null); 155 } else if (factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL) { 156 Log.i(TAG, "Registering null Bluetooth Service (factory test)"); 157 ServiceManager.addService(Context.BLUETOOTH_SERVICE, null); 158 } else { 159 Log.i(TAG, "Starting Bluetooth Service."); 160 bluetooth = new BluetoothDeviceService(context); 161 bluetooth.init(); 162 ServiceManager.addService(Context.BLUETOOTH_SERVICE, bluetooth); 163 164 int bluetoothOn = Settings.System.getInt(mContentResolver, 165 Settings.System.BLUETOOTH_ON, 0); 166 if (bluetoothOn > 0) { 167 bluetooth.enable(null); 168 } 169 } 170 171 } catch (RuntimeException e) { 172 Log.e("System", "Failure starting core service", e); 173 } 174 175 if (factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL) { 176 StatusBarService statusBar = null; 177 try { 178 Log.i(TAG, "Starting Status Bar Service."); 179 statusBar = new StatusBarService(context); 180 ServiceManager.addService("statusbar", statusBar); 181 com.android.server.status.StatusBarPolicy.installIcons(context, statusBar); 182 } catch (Throwable e) { 183 Log.e(TAG, "Failure starting StatusBarService", e); 184 } 185 186 try { 187 Log.i(TAG, "Starting Hardware Service."); 188 ServiceManager.addService("hardware", new HardwareService(context)); 189 } catch (Throwable e) { 190 Log.e(TAG, "Failure starting Hardware Service", e); 191 } 192 193 try { 194 Log.i(TAG, "Starting NetStat Service."); 195 ServiceManager.addService("netstat", new NetStatService(context)); 196 } catch (Throwable e) { 197 Log.e(TAG, "Failure starting NetStat Service", e); 198 } 199 200 try { 201 Log.i(TAG, "Starting Connectivity Service."); 202 ServiceManager.addService(Context.CONNECTIVITY_SERVICE, 203 ConnectivityService.getInstance(context)); 204 } catch (Throwable e) { 205 Log.e(TAG, "Failure starting Connectivity Service", e); 206 } 207 208 try { 209 Log.i(TAG, "Starting Notification Manager."); 210 ServiceManager.addService(Context.NOTIFICATION_SERVICE, 211 new NotificationManagerService(context, statusBar)); 212 } catch (Throwable e) { 213 Log.e(TAG, "Failure starting Notification Manager", e); 214 } 215 216 try { 217 // MountService must start after NotificationManagerService 218 Log.i(TAG, "Starting Mount Service."); 219 ServiceManager.addService("mount", new MountService(context)); 220 221 } catch (Throwable e) { 222 Log.e(TAG, "Failure starting Mount Service", e); 223 } 224 225 try { 226 Log.i(TAG, "Starting DeviceMemoryMonitor service"); 227 ServiceManager.addService("devicememorymonitor", new DeviceMemoryMonitorService(context)); 228 } catch (Throwable e) { 229 Log.e(TAG, "Failure starting DeviceMemoryMonitor service", e); 230 } 231 232 try { 233 Log.i(TAG, "Starting Location Manager."); 234 ServiceManager.addService(Context.LOCATION_SERVICE, new LocationManagerService(context)); 235 } catch (Throwable e) { 236 Log.e(TAG, "Failure starting Location Manager", e); 237 } 238 239 try { 240 Log.i(TAG, "Starting Search Service."); 241 ServiceManager.addService( Context.SEARCH_SERVICE, new SearchManagerService(context) ); 242 } catch (Throwable e) { 243 Log.e(TAG, "Failure starting Search Service", e); 244 } 245 246 try { 247 Log.i(TAG, "Starting Clipboard Service."); 248 ServiceManager.addService("clipboard", new ClipboardService(context)); 249 } catch (Throwable e) { 250 Log.e(TAG, "Failure starting Clipboard Service", e); 251 } 252 253 if (INCLUDE_DEMO) { 254 Log.i(TAG, "Installing demo data..."); 255 (new DemoThread(context)).start(); 256 } 257 258 try { 259 Log.i(TAG, "Starting Checkin Service"); 260 addService(context, "checkin", "com.google.android.server.checkin.CheckinService", 261 FallbackCheckinService.class); 262 } catch (Throwable e) { 263 Log.e(TAG, "Failure starting Checkin Service", e); 264 } 265 266 try { 267 Log.i(TAG, "Starting Wallpaper Service"); 268 ServiceManager.addService(Context.WALLPAPER_SERVICE, new WallpaperService(context)); 269 } catch (Throwable e) { 270 Log.e(TAG, "Failure starting Wallpaper Service", e); 271 } 272 273 try { 274 Log.i(TAG, "Starting Audio Service"); 275 ServiceManager.addService(Context.AUDIO_SERVICE, new AudioService(context)); 276 } catch (Throwable e) { 277 Log.e(TAG, "Failure starting Volume Service", e); 278 } 279 280 try { 281 Log.i(TAG, "Starting HeadsetObserver"); 282 // Listen for wired headset changes 283 headset = new HeadsetObserver(context); 284 } catch (Throwable e) { 285 Log.e(TAG, "Failure starting HeadsetObserver", e); 286 } 287 } 288 289 // make sure the ADB_ENABLED setting value matches the system property value 290 Settings.System.putInt(mContentResolver, Settings.System.ADB_ENABLED, 291 "1".equals(SystemProperties.get("persist.service.adb.enable")) ? 1 : 0); 292 293 // register observer to listen for settings changes 294 mContentResolver.registerContentObserver(Settings.System.getUriFor(Settings.System.ADB_ENABLED), 295 false, new AdbSettingsObserver()); 296 297 // It is now time to start up the app processes... 298 wm.systemReady(); 299 power.systemReady(); 300 try { 301 pm.systemReady(); 302 } catch (RemoteException e) { 303 } 304 305 // After making the following code, third party code may be running... 306 try { 307 ActivityManagerNative.getDefault().systemReady(); 308 } catch (RemoteException e) { 309 } 310 311 Watchdog.getInstance().start(); 312 313 Looper.loop(); 314 Log.d(TAG, "System ServerThread is exiting!"); 315 } 316 317 private void addService(Context context, String name, String serviceClass, 318 Class<? extends IBinder> fallback) { 319 320 final IBinder service = findService(context, serviceClass, fallback); 321 if (service != null) { 322 ServiceManager.addService(name, service); 323 } else { 324 Log.e(TAG, "Failure starting service '" + name + "' with class " + serviceClass); 325 } 326 } 327 328 private IBinder findService(Context context, String serviceClass, 329 Class<? extends IBinder> fallback) { 330 331 IBinder service = null; 332 try { 333 Class<?> klass = Class.forName(serviceClass); 334 Constructor<?> c = klass.getConstructor(Context.class); 335 service = (IBinder) c.newInstance(context); 336 } catch (ClassNotFoundException e) { 337 // Ignore 338 } catch (IllegalAccessException e) { 339 // Ignore 340 } catch (NoSuchMethodException e) { 341 // Ignore 342 } catch (InvocationTargetException e) { 343 // Ignore 344 } catch (InstantiationException e) { 345 // Ignore 346 } 347 348 if (service == null && fallback != null) { 349 Log.w(TAG, "Could not find " + serviceClass + ", trying fallback"); 350 try { 351 service = fallback.newInstance(); 352 } catch (IllegalAccessException e) { 353 // Ignore 354 } catch (InstantiationException e) { 355 // Ignore 356 } 357 } 358 359 return service; 360 } 361} 362 363class DemoThread extends Thread 364{ 365 DemoThread(Context context) 366 { 367 mContext = context; 368 } 369 370 @Override 371 public void run() 372 { 373 try { 374 Cursor c = mContext.getContentResolver().query(People.CONTENT_URI, null, null, null, null); 375 boolean hasData = c != null && c.moveToFirst(); 376 if (c != null) { 377 c.deactivate(); 378 } 379 if (!hasData) { 380 DemoDataSet dataset = new DemoDataSet(); 381 dataset.add(mContext); 382 } 383 } catch (Throwable e) { 384 Log.e("SystemServer", "Failure installing demo data", e); 385 } 386 387 } 388 389 Context mContext; 390} 391 392public class SystemServer 393{ 394 private static final String TAG = "SystemServer"; 395 396 public static final int FACTORY_TEST_OFF = 0; 397 public static final int FACTORY_TEST_LOW_LEVEL = 1; 398 public static final int FACTORY_TEST_HIGH_LEVEL = 2; 399 400 /** 401 * This method is called from Zygote to initialize the system. This will cause the native 402 * services (SurfaceFlinger, AudioFlinger, etc..) to be started. After that it will call back 403 * up into init2() to start the Android services. 404 */ 405 native public static void init1(String[] args); 406 407 public static void main(String[] args) { 408 // The system server has to run all of the time, so it needs to be 409 // as efficient as possible with its memory usage. 410 VMRuntime.getRuntime().setTargetHeapUtilization(0.8f); 411 412 System.loadLibrary("android_servers"); 413 init1(args); 414 } 415 416 public static final void init2() { 417 Log.i(TAG, "Entered the Android system server!"); 418 Thread thr = new ServerThread(); 419 thr.setName("android.server.ServerThread"); 420 thr.start(); 421 } 422} 423