SystemServer.java revision 038cabe0247ee46df62f9363f1a303bc5b9c1028 
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.os.BinderInternal;
21import com.android.internal.os.SamplingProfilerIntegration;
22import com.trustedlogic.trustednfc.android.server.NfcService;
23
24import dalvik.system.VMRuntime;
25import dalvik.system.Zygote;
26
27import android.app.ActivityManagerNative;
28import android.bluetooth.BluetoothAdapter;
29import android.content.ComponentName;
30import android.content.ContentResolver;
31import android.content.ContentService;
32import android.content.Context;
33import android.content.Intent;
34import android.content.pm.IPackageManager;
35import android.database.ContentObserver;
36import android.database.Cursor;
37import android.media.AudioService;
38import android.os.*;
39import android.provider.Contacts.People;
40import android.provider.Settings;
41import android.server.BluetoothA2dpService;
42import android.server.BluetoothService;
43import android.server.search.SearchManagerService;
44import android.util.EventLog;
45import android.util.Log;
46import android.util.Slog;
47import android.accounts.AccountManagerService;
48
49import java.io.File;
50import java.util.Timer;
51import java.util.TimerTask;
52
53class ServerThread extends Thread {
54    private static final String TAG = "SystemServer";
55    private final static boolean INCLUDE_DEMO = false;
56
57    private static final int LOG_BOOT_PROGRESS_SYSTEM_RUN = 3010;
58
59    private ContentResolver mContentResolver;
60
61    private class AdbSettingsObserver extends ContentObserver {
62        public AdbSettingsObserver() {
63            super(null);
64        }
65        @Override
66        public void onChange(boolean selfChange) {
67            boolean enableAdb = (Settings.Secure.getInt(mContentResolver,
68                Settings.Secure.ADB_ENABLED, 0) > 0);
69            // setting this secure property will start or stop adbd
70           SystemProperties.set("persist.service.adb.enable", enableAdb ? "1" : "0");
71        }
72    }
73
74    @Override
75    public void run() {
76        EventLog.writeEvent(EventLogTags.BOOT_PROGRESS_SYSTEM_RUN,
77            SystemClock.uptimeMillis());
78
79        Looper.prepare();
80
81        android.os.Process.setThreadPriority(
82                android.os.Process.THREAD_PRIORITY_FOREGROUND);
83
84        BinderInternal.disableBackgroundScheduling(true);
85        android.os.Process.setCanSelfBackground(false);
86
87        String factoryTestStr = SystemProperties.get("ro.factorytest");
88        int factoryTest = "".equals(factoryTestStr) ? SystemServer.FACTORY_TEST_OFF
89                : Integer.parseInt(factoryTestStr);
90
91        LightsService lights = null;
92        PowerManagerService power = null;
93        BatteryService battery = null;
94        ConnectivityService connectivity = null;
95        IPackageManager pm = null;
96        Context context = null;
97        WindowManagerService wm = null;
98        BluetoothService bluetooth = null;
99        BluetoothA2dpService bluetoothA2dp = null;
100        HeadsetObserver headset = null;
101        DockObserver dock = null;
102        UsbObserver usb = null;
103        UiModeManagerService uiMode = null;
104        RecognitionManagerService recognition = null;
105        ThrottleService throttle = null;
106
107        // Critical services...
108        try {
109            Slog.i(TAG, "Entropy Service");
110            ServiceManager.addService("entropy", new EntropyService());
111
112            Slog.i(TAG, "Power Manager");
113            power = new PowerManagerService();
114            ServiceManager.addService(Context.POWER_SERVICE, power);
115
116            Slog.i(TAG, "Activity Manager");
117            context = ActivityManagerService.main(factoryTest);
118
119            Slog.i(TAG, "Telephony Registry");
120            ServiceManager.addService("telephony.registry", new TelephonyRegistry(context));
121
122            AttributeCache.init(context);
123
124            Slog.i(TAG, "Package Manager");
125            pm = PackageManagerService.main(context,
126                    factoryTest != SystemServer.FACTORY_TEST_OFF);
127
128            ActivityManagerService.setSystemProcess();
129
130            mContentResolver = context.getContentResolver();
131
132            // The AccountManager must come before the ContentService
133            try {
134                Slog.i(TAG, "Account Manager");
135                ServiceManager.addService(Context.ACCOUNT_SERVICE,
136                        new AccountManagerService(context));
137            } catch (Throwable e) {
138                Slog.e(TAG, "Failure starting Account Manager", e);
139            }
140
141            Slog.i(TAG, "Content Manager");
142            ContentService.main(context,
143                    factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL);
144
145            Slog.i(TAG, "System Content Providers");
146            ActivityManagerService.installSystemProviders();
147
148            Slog.i(TAG, "Battery Service");
149            battery = new BatteryService(context);
150            ServiceManager.addService("battery", battery);
151
152            Slog.i(TAG, "Lights Service");
153            lights = new LightsService(context);
154
155            Slog.i(TAG, "Vibrator Service");
156            ServiceManager.addService("vibrator", new VibratorService(context));
157
158            // only initialize the power service after we have started the
159            // lights service, content providers and the battery service.
160            power.init(context, lights, ActivityManagerService.getDefault(), battery);
161
162            Slog.i(TAG, "Alarm Manager");
163            AlarmManagerService alarm = new AlarmManagerService(context);
164            ServiceManager.addService(Context.ALARM_SERVICE, alarm);
165
166            Slog.i(TAG, "Init Watchdog");
167            Watchdog.getInstance().init(context, battery, power, alarm,
168                    ActivityManagerService.self());
169
170            Slog.i(TAG, "Window Manager");
171            wm = WindowManagerService.main(context, power,
172                    factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL);
173            ServiceManager.addService(Context.WINDOW_SERVICE, wm);
174
175            ((ActivityManagerService)ServiceManager.getService("activity"))
176                    .setWindowManager(wm);
177
178            // Skip Bluetooth if we have an emulator kernel
179            // TODO: Use a more reliable check to see if this product should
180            // support Bluetooth - see bug 988521
181            if (SystemProperties.get("ro.kernel.qemu").equals("1")) {
182                Slog.i(TAG, "Registering null Bluetooth Service (emulator)");
183                ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, null);
184            } else if (factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL) {
185                Slog.i(TAG, "Registering null Bluetooth Service (factory test)");
186                ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, null);
187            } else {
188                Slog.i(TAG, "Bluetooth Service");
189                bluetooth = new BluetoothService(context);
190                ServiceManager.addService(BluetoothAdapter.BLUETOOTH_SERVICE, bluetooth);
191                bluetooth.initAfterRegistration();
192                bluetoothA2dp = new BluetoothA2dpService(context, bluetooth);
193                ServiceManager.addService(BluetoothA2dpService.BLUETOOTH_A2DP_SERVICE,
194                                          bluetoothA2dp);
195
196                int bluetoothOn = Settings.Secure.getInt(mContentResolver,
197                    Settings.Secure.BLUETOOTH_ON, 0);
198                if (bluetoothOn > 0) {
199                    bluetooth.enable();
200                }
201            }
202
203        } catch (RuntimeException e) {
204            Slog.e("System", "Failure starting core service", e);
205        }
206
207        DevicePolicyManagerService devicePolicy = null;
208        StatusBarManagerService statusBar = null;
209        InputMethodManagerService imm = null;
210        AppWidgetService appWidget = null;
211        NotificationManagerService notification = null;
212        WallpaperManagerService wallpaper = null;
213        LocationManagerService location = null;
214
215        if (factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL) {
216            try {
217                Slog.i(TAG, "Device Policy");
218                devicePolicy = new DevicePolicyManagerService(context);
219                ServiceManager.addService(Context.DEVICE_POLICY_SERVICE, devicePolicy);
220            } catch (Throwable e) {
221                Slog.e(TAG, "Failure starting DevicePolicyService", e);
222            }
223
224            try {
225                Slog.i(TAG, "Status Bar");
226                statusBar = new StatusBarManagerService(context);
227                ServiceManager.addService(Context.STATUS_BAR_SERVICE, statusBar);
228            } catch (Throwable e) {
229                Slog.e(TAG, "Failure starting StatusBarManagerService", e);
230            }
231
232            try {
233                Slog.i(TAG, "Clipboard Service");
234                ServiceManager.addService(Context.CLIPBOARD_SERVICE,
235                        new ClipboardService(context));
236            } catch (Throwable e) {
237                Slog.e(TAG, "Failure starting Clipboard Service", e);
238            }
239
240            try {
241                Slog.i(TAG, "Input Method Service");
242                imm = new InputMethodManagerService(context, statusBar);
243                ServiceManager.addService(Context.INPUT_METHOD_SERVICE, imm);
244            } catch (Throwable e) {
245                Slog.e(TAG, "Failure starting Input Manager Service", e);
246            }
247
248            try {
249                Slog.i(TAG, "NetStat Service");
250                ServiceManager.addService("netstat", new NetStatService(context));
251            } catch (Throwable e) {
252                Slog.e(TAG, "Failure starting NetStat Service", e);
253            }
254
255            try {
256                Slog.i(TAG, "NetworkManagement Service");
257                ServiceManager.addService(
258                        Context.NETWORKMANAGEMENT_SERVICE,
259                        NetworkManagementService.create(context));
260            } catch (Throwable e) {
261                Slog.e(TAG, "Failure starting NetworkManagement Service", e);
262            }
263
264            try {
265                Slog.i(TAG, "Connectivity Service");
266                connectivity = ConnectivityService.getInstance(context);
267                ServiceManager.addService(Context.CONNECTIVITY_SERVICE, connectivity);
268            } catch (Throwable e) {
269                Slog.e(TAG, "Failure starting Connectivity Service", e);
270            }
271
272            try {
273                Slog.i(TAG, "Throttle Service");
274                throttle = new ThrottleService(context);
275                ServiceManager.addService(
276                        Context.THROTTLE_SERVICE, throttle);
277            } catch (Throwable e) {
278                Slog.e(TAG, "Failure starting ThrottleService", e);
279            }
280
281            try {
282              Slog.i(TAG, "Accessibility Manager");
283              ServiceManager.addService(Context.ACCESSIBILITY_SERVICE,
284                      new AccessibilityManagerService(context));
285            } catch (Throwable e) {
286              Slog.e(TAG, "Failure starting Accessibility Manager", e);
287            }
288
289            try {
290                /*
291                 * NotificationManagerService is dependant on MountService,
292                 * (for media / usb notifications) so we must start MountService first.
293                 */
294                Slog.i(TAG, "Mount Service");
295                ServiceManager.addService("mount", new MountService(context));
296            } catch (Throwable e) {
297                Slog.e(TAG, "Failure starting Mount Service", e);
298            }
299
300            try {
301                Slog.i(TAG, "Notification Manager");
302                notification = new NotificationManagerService(context, statusBar, lights);
303                ServiceManager.addService(Context.NOTIFICATION_SERVICE, notification);
304            } catch (Throwable e) {
305                Slog.e(TAG, "Failure starting Notification Manager", e);
306            }
307
308            try {
309                Slog.i(TAG, "Device Storage Monitor");
310                ServiceManager.addService(DeviceStorageMonitorService.SERVICE,
311                        new DeviceStorageMonitorService(context));
312            } catch (Throwable e) {
313                Slog.e(TAG, "Failure starting DeviceStorageMonitor service", e);
314            }
315
316            try {
317                Slog.i(TAG, "Location Manager");
318                location = new LocationManagerService(context);
319                ServiceManager.addService(Context.LOCATION_SERVICE, location);
320            } catch (Throwable e) {
321                Slog.e(TAG, "Failure starting Location Manager", e);
322            }
323
324            try {
325                Slog.i(TAG, "Search Service");
326                ServiceManager.addService(Context.SEARCH_SERVICE,
327                        new SearchManagerService(context));
328            } catch (Throwable e) {
329                Slog.e(TAG, "Failure starting Search Service", e);
330            }
331
332            if (INCLUDE_DEMO) {
333                Slog.i(TAG, "Installing demo data...");
334                (new DemoThread(context)).start();
335            }
336
337            try {
338                Slog.i(TAG, "DropBox Service");
339                ServiceManager.addService(Context.DROPBOX_SERVICE,
340                        new DropBoxManagerService(context, new File("/data/system/dropbox")));
341            } catch (Throwable e) {
342                Slog.e(TAG, "Failure starting DropBoxManagerService", e);
343            }
344
345            try {
346                Slog.i(TAG, "Wallpaper Service");
347                wallpaper = new WallpaperManagerService(context);
348                ServiceManager.addService(Context.WALLPAPER_SERVICE, wallpaper);
349            } catch (Throwable e) {
350                Slog.e(TAG, "Failure starting Wallpaper Service", e);
351            }
352
353            try {
354                Slog.i(TAG, "Audio Service");
355                ServiceManager.addService(Context.AUDIO_SERVICE, new AudioService(context));
356            } catch (Throwable e) {
357                Slog.e(TAG, "Failure starting Audio Service", e);
358            }
359
360            try {
361                Slog.i(TAG, "Headset Observer");
362                // Listen for wired headset changes
363                headset = new HeadsetObserver(context);
364            } catch (Throwable e) {
365                Slog.e(TAG, "Failure starting HeadsetObserver", e);
366            }
367
368            try {
369                Slog.i(TAG, "Dock Observer");
370                // Listen for dock station changes
371                dock = new DockObserver(context, power);
372            } catch (Throwable e) {
373                Slog.e(TAG, "Failure starting DockObserver", e);
374            }
375
376            try {
377                Slog.i(TAG, "USB Observer");
378                // Listen for USB changes
379                usb = new UsbObserver(context);
380            } catch (Throwable e) {
381                Slog.e(TAG, "Failure starting UsbObserver", e);
382            }
383
384            try {
385                Slog.i(TAG, "UI Mode Manager Service");
386                // Listen for UI mode changes
387                uiMode = new UiModeManagerService(context);
388            } catch (Throwable e) {
389                Slog.e(TAG, "Failure starting UiModeManagerService", e);
390            }
391
392            try {
393                Slog.i(TAG, "Backup Service");
394                ServiceManager.addService(Context.BACKUP_SERVICE,
395                        new BackupManagerService(context));
396            } catch (Throwable e) {
397                Slog.e(TAG, "Failure starting Backup Service", e);
398            }
399
400            try {
401                Slog.i(TAG, "AppWidget Service");
402                appWidget = new AppWidgetService(context);
403                ServiceManager.addService(Context.APPWIDGET_SERVICE, appWidget);
404            } catch (Throwable e) {
405                Slog.e(TAG, "Failure starting AppWidget Service", e);
406            }
407
408            try {
409                Slog.i(TAG, "Recognition Service");
410                recognition = new RecognitionManagerService(context);
411            } catch (Throwable e) {
412                Slog.e(TAG, "Failure starting Recognition Service", e);
413            }
414
415            try {
416                Slog.i(TAG, "Nfc Service");
417                NfcService nfc;
418                try {
419                    nfc = new NfcService(context);
420                } catch (UnsatisfiedLinkError e) { // gross hack to detect NFC
421                    nfc = null;
422                    Slog.w(TAG, "No NFC support");
423                }
424                ServiceManager.addService(Context.NFC_SERVICE, nfc);
425            } catch (Throwable e) {
426                Slog.e(TAG, "Failure starting NFC Service", e);
427            }
428
429            try {
430                Slog.i(TAG, "DiskStats Service");
431                ServiceManager.addService("diskstats", new DiskStatsService(context));
432            } catch (Throwable e) {
433                Slog.e(TAG, "Failure starting DiskStats Service", e);
434            }
435        }
436
437        // make sure the ADB_ENABLED setting value matches the secure property value
438        Settings.Secure.putInt(mContentResolver, Settings.Secure.ADB_ENABLED,
439                "1".equals(SystemProperties.get("persist.service.adb.enable")) ? 1 : 0);
440
441        // register observer to listen for settings changes
442        mContentResolver.registerContentObserver(Settings.Secure.getUriFor(Settings.Secure.ADB_ENABLED),
443                false, new AdbSettingsObserver());
444
445        // Before things start rolling, be sure we have decided whether
446        // we are in safe mode.
447        final boolean safeMode = wm.detectSafeMode();
448        if (safeMode) {
449            try {
450                ActivityManagerNative.getDefault().enterSafeMode();
451                // Post the safe mode state in the Zygote class
452                Zygote.systemInSafeMode = true;
453                // Disable the JIT for the system_server process
454                VMRuntime.getRuntime().disableJitCompilation();
455            } catch (RemoteException e) {
456            }
457        } else {
458            // Enable the JIT for the system_server process
459            VMRuntime.getRuntime().startJitCompilation();
460        }
461
462        // It is now time to start up the app processes...
463
464        if (devicePolicy != null) {
465            devicePolicy.systemReady();
466        }
467
468        if (notification != null) {
469            notification.systemReady();
470        }
471
472        if (statusBar != null) {
473            statusBar.systemReady();
474        }
475        wm.systemReady();
476        power.systemReady();
477        try {
478            pm.systemReady();
479        } catch (RemoteException e) {
480        }
481
482        // These are needed to propagate to the runnable below.
483        final StatusBarManagerService statusBarF = statusBar;
484        final BatteryService batteryF = battery;
485        final ConnectivityService connectivityF = connectivity;
486        final DockObserver dockF = dock;
487        final UsbObserver usbF = usb;
488        final ThrottleService throttleF = throttle;
489        final UiModeManagerService uiModeF = uiMode;
490        final AppWidgetService appWidgetF = appWidget;
491        final WallpaperManagerService wallpaperF = wallpaper;
492        final InputMethodManagerService immF = imm;
493        final RecognitionManagerService recognitionF = recognition;
494        final LocationManagerService locationF = location;
495
496        // We now tell the activity manager it is okay to run third party
497        // code.  It will call back into us once it has gotten to the state
498        // where third party code can really run (but before it has actually
499        // started launching the initial applications), for us to complete our
500        // initialization.
501        ((ActivityManagerService)ActivityManagerNative.getDefault())
502                .systemReady(new Runnable() {
503            public void run() {
504                Slog.i(TAG, "Making services ready");
505
506                if (statusBarF != null) statusBarF.systemReady2();
507                if (batteryF != null) batteryF.systemReady();
508                if (connectivityF != null) connectivityF.systemReady();
509                if (dockF != null) dockF.systemReady();
510                if (usbF != null) usbF.systemReady();
511                if (uiModeF != null) uiModeF.systemReady();
512                if (recognitionF != null) recognitionF.systemReady();
513                Watchdog.getInstance().start();
514
515                // It is now okay to let the various system services start their
516                // third party code...
517
518                if (appWidgetF != null) appWidgetF.systemReady(safeMode);
519                if (wallpaperF != null) wallpaperF.systemReady();
520                if (immF != null) immF.systemReady();
521                if (locationF != null) locationF.systemReady();
522                if (throttleF != null) throttleF.systemReady();
523            }
524        });
525
526        // For debug builds, log event loop stalls to dropbox for analysis.
527        if (StrictMode.conditionallyEnableDebugLogging()) {
528            Slog.i(TAG, "Enabled StrictMode for system server main thread.");
529        }
530
531        Looper.loop();
532        Slog.d(TAG, "System ServerThread is exiting!");
533    }
534}
535
536class DemoThread extends Thread
537{
538    DemoThread(Context context)
539    {
540        mContext = context;
541    }
542
543    @Override
544    public void run()
545    {
546        try {
547            Cursor c = mContext.getContentResolver().query(People.CONTENT_URI, null, null, null, null);
548            boolean hasData = c != null && c.moveToFirst();
549            if (c != null) {
550                c.deactivate();
551            }
552            if (!hasData) {
553                DemoDataSet dataset = new DemoDataSet();
554                dataset.add(mContext);
555            }
556        } catch (Throwable e) {
557            Slog.e("SystemServer", "Failure installing demo data", e);
558        }
559
560    }
561
562    Context mContext;
563}
564
565public class SystemServer
566{
567    private static final String TAG = "SystemServer";
568
569    public static final int FACTORY_TEST_OFF = 0;
570    public static final int FACTORY_TEST_LOW_LEVEL = 1;
571    public static final int FACTORY_TEST_HIGH_LEVEL = 2;
572
573    static Timer timer;
574    static final long SNAPSHOT_INTERVAL = 60 * 60 * 1000; // 1hr
575
576    /**
577     * This method is called from Zygote to initialize the system. This will cause the native
578     * services (SurfaceFlinger, AudioFlinger, etc..) to be started. After that it will call back
579     * up into init2() to start the Android services.
580     */
581    native public static void init1(String[] args);
582
583    public static void main(String[] args) {
584        if (SamplingProfilerIntegration.isEnabled()) {
585            SamplingProfilerIntegration.start();
586            timer = new Timer();
587            timer.schedule(new TimerTask() {
588                @Override
589                public void run() {
590                    SamplingProfilerIntegration.writeSnapshot("system_server");
591                }
592            }, SNAPSHOT_INTERVAL, SNAPSHOT_INTERVAL);
593        }
594
595        // The system server has to run all of the time, so it needs to be
596        // as efficient as possible with its memory usage.
597        VMRuntime.getRuntime().setTargetHeapUtilization(0.8f);
598
599        System.loadLibrary("android_servers");
600        init1(args);
601    }
602
603    public static final void init2() {
604        Slog.i(TAG, "Entered the Android system server!");
605        Thread thr = new ServerThread();
606        thr.setName("android.server.ServerThread");
607        thr.start();
608    }
609}
610