ServiceManager.java

位置: frameworks/base/core/java/android/os/ServiceManager.java

介绍：framework 核心类，保存所有service的 binder引用，提供service添加和查询接口。

主要接口：

public static void addService(String name, IBinder service) {        try {            getIServiceManager().addService(name, service, false);        } catch (RemoteException e) {            Log.e(TAG, "error in addService", e);        }    }

public static IBinder getService(String name) {        try {            IBinder service = sCache.get(name);            if (service != null) {                return service;            } else {                return getIServiceManager().getService(name);            }        } catch (RemoteException e) {            Log.e(TAG, "error in getService", e);        }        return null;    }

主要使用地方：

1. framework/base/services/java/com/android/server/SystemServer.java

private void startOtherServices() {

...

ServiceManager.addService("scheduling_policy", new SchedulingPolicyService());

ServiceManager.addService("telephony.registry", telephonyRegistry);

ServiceManager.addService("vibrator", vibrator);

ServiceManager.addService(Context.CONSUMER_IR_SERVICE, consumerIr);

ServiceManager.addService(Context.WINDOW_SERVICE, wm);
ServiceManager.addService(Context.INPUT_SERVICE, inputManager);

ServiceManager.addService(Context.ACCESSIBILITY_SERVICE,
                        new AccessibilityManagerService(context));

ServiceManager.addService(Context.STATUS_BAR_SERVICE, statusBar);

ServiceManager.addService(Context.CLIPBOARD_SERVICE,
                            new ClipboardService(context));

ServiceManager.addService(Context.NETWORKMANAGEMENT_SERVICE, networkManagement);

ServiceManager.addService(Context.NETWORK_SCORE_SERVICE, networkScore);

ServiceManager.addService(Context.NETWORK_STATS_SERVICE, networkStats);

ServiceManager.addService(Context.NETWORK_POLICY_SERVICE, networkPolicy);

ServiceManager.addService(Context.CONNECTIVITY_SERVICE, connectivity);

ServiceManager.addService(
                            Context.NSD_SERVICE, serviceDiscovery);

ServiceManager.addService(Context.UPDATE_LOCK_SERVICE,
                            new UpdateLockService(context));

ServiceManager.addService(Context.LOCATION_SERVICE, location);

ServiceManager.addService(Context.COUNTRY_DETECTOR, countryDetector);

ServiceManager.addService(Context.SEARCH_ENGINE_SERVICE,
                                new SearchEngineManagerService(context));

ServiceManager.addService(ISensorHubManager.SENSORHUB_SERVICE,
                            new SensorHubService(context));

ServiceManager.addService(Context.SERIAL_SERVICE, serial);

ServiceManager.addService(Context.HARDWARE_PROPERTIES_SERVICE,
                            hardwarePropertiesService);

ServiceManager.addService("diskstats", new DiskStatsService(context));

ServiceManager.addService("samplingprofiler",
                                new SamplingProfilerService(context));

ServiceManager.addService("network_time_update_service", networkTimeUpdater);

ServiceManager.addService("commontime_management", commonTimeMgmtService);

ServiceManager.addService(AssetAtlasService.ASSET_ATLAS_SERVICE, atlas);

ServiceManager.addService(GraphicsStatsService.GRAPHICS_STATS_SERVICE,
                        new GraphicsStatsService(context));

ServiceManager.addService(Context.MEDIA_ROUTER_SERVICE, mediaRouter);

...

}

private void startBootstrapServices() {

...

// Start the package manager.
        traceBeginAndSlog("StartPackageManagerService");
        mPackageManagerService = PackageManagerService.main(mSystemContext, installer,
                mFactoryTestMode != FactoryTest.FACTORY_TEST_OFF, mOnlyCore);
        mFirstBoot = mPackageManagerService.isFirstBoot();

// Set up the Application instance for the system process and get started.

...
    mActivityManagerService.setSystemProcess();

...

}

...

2. frameworks/base/services/core/java/com/android/server/am/ActivityManagerService.java

public void setSystemProcess() {        try {            ServiceManager.addService(Context.ACTIVITY_SERVICE, this, true);            ServiceManager.addService(ProcessStats.SERVICE_NAME, mProcessStats);            ServiceManager.addService("meminfo", new MemBinder(this));            ServiceManager.addService("gfxinfo", new GraphicsBinder(this));            ServiceManager.addService("dbinfo", new DbBinder(this));            if (MONITOR_CPU_USAGE) {                ServiceManager.addService("cpuinfo", new CpuBinder(this));            }            ServiceManager.addService("permission", new PermissionController(this));            ServiceManager.addService("processinfo", new ProcessInfoService(this));            /// M: ANRManager mechanism @{            ServiceManager.addService("anrmanager", mANRManager, true);            /// @}........}

3. frameworks/base/services/core/java/com/android/server/pm/PackageManagerService.java

public static PackageManagerService main(Context context, Installer installer,            boolean factoryTest, boolean onlyCore) {        // Self-check for initial settings.        PackageManagerServiceCompilerMapping.checkProperties();        PackageManagerService m = new PackageManagerService(context, installer,                factoryTest, onlyCore);        m.enableSystemUserPackages();        ServiceManager.addService("package", m);        return m;    }