android启动流程
android启动流程
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一、整体
1.android 架构图
这个图应该不陌生，在学android时肯定见过。
2.android 启动流程概图
说明：
1. 关于init：
主要做了一下几件事：
1. 挂载和创建系统文件
2.解析init.rc配置文件
3.进入循环：
1.执行action -- zygote在这里启动
2.检测并重启进程
3.接受子进程的 sigchld 信号，执行相应方法
2. 关于zygote：
分两层
1. native层：
1.初始化android运行环境，即android runtime
2.注册jni
3.执行zygote.init的main方法，进入java层
2. java层：
1. 创建socket
2. 执行预加载
3. 通过fork创建 system_server 进程
4. 进入循环，等待AMS的通知，创建对应的进程。
3.关于system_server:
1. 创建 SystemServiceManager，用来管理系统服务的生命周期
2. 用 SystemServiceManager 启动各种服务（比如WMS、AMS、PMS等），并调用serviceManager的addService方法，将这些服务注册到ServiceManger中
3. 启动桌面进程，进入手机桌面
到此，手机启动完成。
二、源码级说明
以下带源码的说明，不想看可略过。
1.boot rom
电源按下开始，引导芯片代码开始从预定义的地方（固化在ROM）开始执行。加载引导程序到RAM，然后执行。
2.boot loader
Android 系统虽然也是基于 Linux 系统的，但是由于 Android 属于嵌入式设备，并没有像 PC 那样的 BIOS 程序。 取而代之的是 Bootloader —— 系统启动加载器。
Bootloader主要是在系统加载前，初始化硬件设备，建立内存空间的映像图，为最终调用系统内核准备好环境。
在 Android运行环境中里没有硬盘，而是 ROM，它类似于硬盘存放操作系统，用户程序等。
ROM 跟硬盘一样也会划分为不同的区域，用于放置不同的程序．
android系统分区：
| 系统分区 | 功能 |
|---|---|
| /boot | 存放引导程序，包括内核和内存操作程序 |
| /system | 相当于电脑c盘，存放Android系统及系统应用 |
| /recovery | 恢复分区，可以进入该分区进行系统恢复 |
| /data | 用户数据区，包含了用户的数据：联系人、短信、设置、用户安装的程序 |
| /cache | 安卓系统缓存区，保存系统最常访问的数据和应用程序 |
| /misc | 包含一些杂项内容，如系统设置和系统功能启用禁用设置 |
| /sdcard | 用户自己的存储区，可以存放照片，音乐，视频等文件 |
bootloader程序分两个阶段执行：
第一个阶段，检测外部的RAM以及加载对第二阶段有用的程序；
第二阶段，设置网络、内存等等。这些对于运行内核是必要的，为了达到特殊的目标，bootloader可以根据配置参数或者输入数据设置内核。
（bootloader程序可以在\bootable\bootloader\legacy\usbloader找到。）
3. idle
是android系统的第一个进程。他会初始化进程管理、内存管理、binder驱动、相机驱动等。从idle这里开始就开始分用户空间（init）和内核空间（kthreadd）：
kthreadd是所有内核空间的鼻祖：fork所有的内核进程（但在内核中没有进程线程之分，好像都是线程）；
init是所有用户空间的鼻祖：fork所有的用户进程
4. init
是用户空间的鼻祖，他主要做的事情是：
1、挂载和创建系统文件
2、设置selinux -- 安全策略
3、开启属性服务，注册到epoll中
4、解析init.rc文件
5、进入无限循环循环处理脚本：
①执行action（zygote进程就是在这里被启动的）；
②检测并重启进程；
③接收子进程的SIGCHLD信号，执行响应的方法。
最重要的是：init进程会fork出zygote进程。
5. zygote
是所有Java进程的鼻祖， 主要作用：创建Java虚拟机并为Java虚拟机注册JNI方法，创建服务器端Socket，启动SystemServer进程。
具体是分两层：
一、native层：执行一个叫app_progress的可执行文件：
1、初始化android运行时环境（ART，即android runtine），创建jvm；
2、注册jni，建立桥梁，将java本地方法和native的方法关联起来（native层的代码和java代码之间需要通过jni来通信）；
3、通过jni调用java层代码：执行zygoteinit.main()方法。从这里进入java世界。
二、java层：在main方法中：
1、创建ZygoteServer，就是socket；
2、预加载app启动时所依赖的一些资源和类（加快app进程启动）；
3、fork出SystemServer进程，初始化系统服务；
4、ZygoteServer启动loop的死循环(zygote要一直运行，不能退出。代码模拟杀死zygote进程，android手机会重启）。用来接收AMS发来的消息，用于启动其它进程。
也就是从这里开始进入了Java的世界。
6. system_server：
启动各种系统服务（在启动之前还会启动一个系统服务管理类SystemServiceManager：主要用于开机时的各种系统服务的初始化和配置工作。）
具体每一步启动那些服务的详细说明：
1.启动引导服务：startBootstrapServices()
这部分是android的引导服务的启动，包含android framework层的AMS、PMS等，也会启动一些比如传感器之类的服务，但需要通过调用 jni 实现（跟硬件有关了）
/**
* Start the sensor service.
*/
private static native void startSensorService(); // jni
/**
* Starts the small tangle of critical services that are needed to get
* the system off the ground. These services have complex mutual dependencies
* which is why we initialize them all in one place here. Unless your service
* is also entwined in these dependencies, it should be initialized in one of
* the other functions.
*/
private void startBootstrapServices() {
// Wait for installd to finish starting up so that it has a chance to
// create critical directories such as /data/user with the appropriate
// permissions. We need this to complete before we initialize other services.
Installer installer = mSystemServiceManager.startService(Installer.class);
// Activity manager runs the show.
mActivityManagerService = mSystemServiceManager.startService(
ActivityManagerService.Lifecycle.class).getService();
mActivityManagerService.setSystemServiceManager(mSystemServiceManager);
mActivityManagerService.setInstaller(installer);
// Power manager needs to be started early because other services need it.
// Native daemons may be watching for it to be registered so it must be ready
// to handle incoming binder calls immediately (including being able to verify
// the permissions for those calls).
mPowerManagerService = mSystemServiceManager.startService(PowerManagerService.class);
// Now that the power manager has been started, let the activity manager
// initialize power management features.
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "InitPowerManagement");
mActivityManagerService.initPowerManagement();
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
// Manages LEDs and display backlight so we need it to bring up the display.
mSystemServiceManager.startService(LightsService.class);
// Display manager is needed to provide display metrics before package manager
// starts up.
mDisplayManagerService = mSystemServiceManager.startService(DisplayManagerService.class);
// We need the default display before we can initialize the package manager.
mSystemServiceManager.startBootPhase(SystemService.PHASE_WAIT_FOR_DEFAULT_DISPLAY);
// Only run "core" apps if we're encrypting the device.
String cryptState = SystemProperties.get("vold.decrypt");
if (ENCRYPTING_STATE.equals(cryptState)) {
Slog.w(TAG, "Detected encryption in progress - only parsing core apps");
mOnlyCore = true;
} else if (ENCRYPTED_STATE.equals(cryptState)) {
Slog.w(TAG, "Device encrypted - only parsing core apps");
mOnlyCore = true;
}
// Start the package manager.
traceBeginAndSlog("StartPackageManagerService");
mPackageManagerService = PackageManagerService.main(mSystemContext, installer,
mFactoryTestMode != FactoryTest.FACTORY_TEST_OFF, mOnlyCore);
mFirstBoot = mPackageManagerService.isFirstBoot();
mPackageManager = mSystemContext.getPackageManager();
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
// Manages A/B OTA dexopting. This is a bootstrap service as we need it to rename
// A/B artifacts after boot, before anything else might touch/need them.
// Note: this isn't needed during decryption (we don't have /data anyways).
if (!mOnlyCore) {
boolean disableOtaDexopt = SystemProperties.getBoolean("config.disable_otadexopt",
false);
if (!disableOtaDexopt) {
traceBeginAndSlog("StartOtaDexOptService");
try {
OtaDexoptService.main(mSystemContext, mPackageManagerService);
} catch (Throwable e) {
reportWtf("starting OtaDexOptService", e);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
}
}
traceBeginAndSlog("StartUserManagerService");
mSystemServiceManager.startService(UserManagerService.LifeCycle.class);
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
// Initialize attribute cache used to cache resources from packages.
AttributeCache.init(mSystemContext);
// Set up the Application instance for the system process and get started.
mActivityManagerService.setSystemProcess();
// The sensor service needs access to package manager service, app ops
// service, and permissions service, therefore we start it after them.
startSensorService();
}
2. 启动核心服务：startCoreServices()
这部分是Android的核心服务，包含了电池管理服务，应用使用管理服务以及WebView更新服务。
/**
* Starts some essential services that are not tangled up in the bootstrap process.
*/
private void startCoreServices() {
// Tracks the battery level. Requires LightService.
mSystemServiceManager.startService(BatteryService.class);
// Tracks application usage stats.
mSystemServiceManager.startService(UsageStatsService.class);
mActivityManagerService.setUsageStatsManager(
LocalServices.getService(UsageStatsManagerInternal.class));
// Tracks whether the updatable WebView is in a ready state and watches for update installs.
mWebViewUpdateService = mSystemServiceManager.startService(WebViewUpdateService.class);
}3. 启动其他服务：startOtherServices()
这个有点多
/**
* Starts a miscellaneous grab bag of stuff that has yet to be refactored
* and organized.
*/
private void startOtherServices() {
final Context context = mSystemContext;
VibratorService vibrator = null;
IMountService mountService = null;
NetworkManagementService networkManagement = null;
NetworkStatsService networkStats = null;
NetworkPolicyManagerService networkPolicy = null;
ConnectivityService connectivity = null;
NetworkScoreService networkScore = null;
NsdService serviceDiscovery= null;
WindowManagerService wm = null;
SerialService serial = null;
NetworkTimeUpdateService networkTimeUpdater = null;
CommonTimeManagementService commonTimeMgmtService = null;
InputManagerService inputManager = null;
TelephonyRegistry telephonyRegistry = null;
ConsumerIrService consumerIr = null;
MmsServiceBroker mmsService = null;
HardwarePropertiesManagerService hardwarePropertiesService = null;
boolean disableStorage = SystemProperties.getBoolean("config.disable_storage", false);
boolean disableBluetooth = SystemProperties.getBoolean("config.disable_bluetooth", false);
boolean disableLocation = SystemProperties.getBoolean("config.disable_location", false);
boolean disableSystemUI = SystemProperties.getBoolean("config.disable_systemui", false);
boolean disableNonCoreServices = SystemProperties.getBoolean("config.disable_noncore", false);
boolean disableNetwork = SystemProperties.getBoolean("config.disable_network", false);
boolean disableNetworkTime = SystemProperties.getBoolean("config.disable_networktime", false);
boolean disableRtt = SystemProperties.getBoolean("config.disable_rtt", false);
boolean disableMediaProjection = SystemProperties.getBoolean("config.disable_mediaproj",
false);
boolean disableSerial = SystemProperties.getBoolean("config.disable_serial", false);
boolean disableSearchManager = SystemProperties.getBoolean("config.disable_searchmanager",
false);
boolean disableTrustManager = SystemProperties.getBoolean("config.disable_trustmanager",
false);
boolean disableTextServices = SystemProperties.getBoolean("config.disable_textservices", false);
boolean disableSamplingProfiler = SystemProperties.getBoolean("config.disable_samplingprof",
false);
boolean isEmulator = SystemProperties.get("ro.kernel.qemu").equals("1");
try {
Slog.i(TAG, "Reading configuration...");
SystemConfig.getInstance();
traceBeginAndSlog("StartSchedulingPolicyService");
ServiceManager.addService("scheduling_policy", new SchedulingPolicyService());
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
mSystemServiceManager.startService(TelecomLoaderService.class);
traceBeginAndSlog("StartTelephonyRegistry");
telephonyRegistry = new TelephonyRegistry(context);
ServiceManager.addService("telephony.registry", telephonyRegistry);
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
traceBeginAndSlog("StartEntropyMixer");
mEntropyMixer = new EntropyMixer(context);
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
mContentResolver = context.getContentResolver();
Slog.i(TAG, "Camera Service");
mSystemServiceManager.startService(CameraService.class);
// The AccountManager must come before the ContentService
traceBeginAndSlog("StartAccountManagerService");
mSystemServiceManager.startService(ACCOUNT_SERVICE_CLASS);
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
traceBeginAndSlog("StartContentService");
mSystemServiceManager.startService(CONTENT_SERVICE_CLASS);
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
traceBeginAndSlog("InstallSystemProviders");
mActivityManagerService.installSystemProviders();
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
traceBeginAndSlog("StartVibratorService");
vibrator = new VibratorService(context);
ServiceManager.addService("vibrator", vibrator);
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
traceBeginAndSlog("StartConsumerIrService");
consumerIr = new ConsumerIrService(context);
ServiceManager.addService(Context.CONSUMER_IR_SERVICE, consumerIr);
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
traceBeginAndSlog("StartAlarmManagerService");
mSystemServiceManager.startService(AlarmManagerService.class);
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
traceBeginAndSlog("InitWatchdog");
final Watchdog watchdog = Watchdog.getInstance();
watchdog.init(context, mActivityManagerService);
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
traceBeginAndSlog("StartInputManagerService");
inputManager = new InputManagerService(context);
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
traceBeginAndSlog("StartWindowManagerService");
wm = WindowManagerService.main(context, inputManager,
mFactoryTestMode != FactoryTest.FACTORY_TEST_LOW_LEVEL,
!mFirstBoot, mOnlyCore);
ServiceManager.addService(Context.WINDOW_SERVICE, wm);
ServiceManager.addService(Context.INPUT_SERVICE, inputManager);
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
traceBeginAndSlog("StartVrManagerService");
mSystemServiceManager.startService(VrManagerService.class);
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
mActivityManagerService.setWindowManager(wm);
inputManager.setWindowManagerCallbacks(wm.getInputMonitor());
inputManager.start();
// TODO: Use service dependencies instead.
mDisplayManagerService.windowManagerAndInputReady();
// Skip Bluetooth if we have an emulator kernel
// TODO: Use a more reliable check to see if this product should
// support Bluetooth - see bug 988521
if (isEmulator) {
Slog.i(TAG, "No Bluetooth Service (emulator)");
} else if (mFactoryTestMode == FactoryTest.FACTORY_TEST_LOW_LEVEL) {
Slog.i(TAG, "No Bluetooth Service (factory test)");
} else if (!context.getPackageManager().hasSystemFeature
(PackageManager.FEATURE_BLUETOOTH)) {
Slog.i(TAG, "No Bluetooth Service (Bluetooth Hardware Not Present)");
} else if (disableBluetooth) {
Slog.i(TAG, "Bluetooth Service disabled by config");
} else {
mSystemServiceManager.startService(BluetoothService.class);
}
traceBeginAndSlog("ConnectivityMetricsLoggerService");
mSystemServiceManager.startService(MetricsLoggerService.class);
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
traceBeginAndSlog("PinnerService");
mSystemServiceManager.startService(PinnerService.class);
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
} catch (RuntimeException e) {
Slog.e("System", "******************************************");
Slog.e("System", "************ Failure starting core service", e);
}
StatusBarManagerService statusBar = null;
INotificationManager notification = null;
LocationManagerService location = null;
CountryDetectorService countryDetector = null;
ILockSettings lockSettings = null;
AssetAtlasService atlas = null;
MediaRouterService mediaRouter = null;
// Bring up services needed for UI.
if (mFactoryTestMode != FactoryTest.FACTORY_TEST_LOW_LEVEL) {
mSystemServiceManager.startService(InputMethodManagerService.Lifecycle.class);
traceBeginAndSlog("StartAccessibilityManagerService");
try {
ServiceManager.addService(Context.ACCESSIBILITY_SERVICE,
new AccessibilityManagerService(context));
} catch (Throwable e) {
reportWtf("starting Accessibility Manager", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
try {
wm.displayReady();
} catch (Throwable e) {
reportWtf("making display ready", e);
}
if (mFactoryTestMode != FactoryTest.FACTORY_TEST_LOW_LEVEL) {
if (!disableStorage &&
!"0".equals(SystemProperties.get("system_init.startmountservice"))) {
try {
/*
* NotificationManagerService is dependant on MountService,
* (for media / usb notifications) so we must start MountService first.
*/
mSystemServiceManager.startService(MOUNT_SERVICE_CLASS);
mountService = IMountService.Stub.asInterface(
ServiceManager.getService("mount"));
} catch (Throwable e) {
reportWtf("starting Mount Service", e);
}
}
}
// We start this here so that we update our configuration to set watch or television
// as appropriate.
mSystemServiceManager.startService(UiModeManagerService.class);
if (!mOnlyCore) {
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "UpdatePackagesIfNeeded");
try {
mPackageManagerService.updatePackagesIfNeeded();
} catch (Throwable e) {
reportWtf("update packages", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "PerformFstrimIfNeeded");
try {
mPackageManagerService.performFstrimIfNeeded();
} catch (Throwable e) {
reportWtf("performing fstrim", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
try {
ActivityManagerNative.getDefault().showBootMessage(
context.getResources().getText(
com.android.internal.R.string.android_upgrading_starting_apps),
false);
} catch (RemoteException e) {
}
if (mFactoryTestMode != FactoryTest.FACTORY_TEST_LOW_LEVEL) {
if (!disableNonCoreServices) {
traceBeginAndSlog("StartLockSettingsService");
try {
mSystemServiceManager.startService(LOCK_SETTINGS_SERVICE_CLASS);
lockSettings = ILockSettings.Stub.asInterface(
ServiceManager.getService("lock_settings"));
} catch (Throwable e) {
reportWtf("starting LockSettingsService service", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
if (!SystemProperties.get(PERSISTENT_DATA_BLOCK_PROP).equals("")) {
mSystemServiceManager.startService(PersistentDataBlockService.class);
}
mSystemServiceManager.startService(DeviceIdleController.class);
// Always start the Device Policy Manager, so that the API is compatible with
// API8.
mSystemServiceManager.startService(DevicePolicyManagerService.Lifecycle.class);
}
if (!disableSystemUI) {
traceBeginAndSlog("StartStatusBarManagerService");
try {
statusBar = new StatusBarManagerService(context, wm);
ServiceManager.addService(Context.STATUS_BAR_SERVICE, statusBar);
} catch (Throwable e) {
reportWtf("starting StatusBarManagerService", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
if (!disableNonCoreServices) {
traceBeginAndSlog("StartClipboardService");
try {
ServiceManager.addService(Context.CLIPBOARD_SERVICE,
new ClipboardService(context));
} catch (Throwable e) {
reportWtf("starting Clipboard Service", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
if (!disableNetwork) {
traceBeginAndSlog("StartNetworkManagementService");
try {
networkManagement = NetworkManagementService.create(context);
ServiceManager.addService(Context.NETWORKMANAGEMENT_SERVICE, networkManagement);
} catch (Throwable e) {
reportWtf("starting NetworkManagement Service", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
if (!disableNonCoreServices && !disableTextServices) {
mSystemServiceManager.startService(TextServicesManagerService.Lifecycle.class);
}
if (!disableNetwork) {
traceBeginAndSlog("StartNetworkScoreService");
try {
networkScore = new NetworkScoreService(context);
ServiceManager.addService(Context.NETWORK_SCORE_SERVICE, networkScore);
} catch (Throwable e) {
reportWtf("starting Network Score Service", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
traceBeginAndSlog("StartNetworkStatsService");
try {
networkStats = NetworkStatsService.create(context, networkManagement);
ServiceManager.addService(Context.NETWORK_STATS_SERVICE, networkStats);
} catch (Throwable e) {
reportWtf("starting NetworkStats Service", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
traceBeginAndSlog("StartNetworkPolicyManagerService");
try {
networkPolicy = new NetworkPolicyManagerService(
context, mActivityManagerService,
(IPowerManager)ServiceManager.getService(Context.POWER_SERVICE),
networkStats, networkManagement);
ServiceManager.addService(Context.NETWORK_POLICY_SERVICE, networkPolicy);
} catch (Throwable e) {
reportWtf("starting NetworkPolicy Service", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_WIFI_NAN)) {
mSystemServiceManager.startService(WIFI_NAN_SERVICE_CLASS);
} else {
Slog.i(TAG, "No Wi-Fi NAN Service (NAN support Not Present)");
}
mSystemServiceManager.startService(WIFI_P2P_SERVICE_CLASS);
mSystemServiceManager.startService(WIFI_SERVICE_CLASS);
mSystemServiceManager.startService(
"com.android.server.wifi.scanner.WifiScanningService");
if (!disableRtt) {
mSystemServiceManager.startService("com.android.server.wifi.RttService");
}
if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_ETHERNET) ||
mPackageManager.hasSystemFeature(PackageManager.FEATURE_USB_HOST)) {
mSystemServiceManager.startService(ETHERNET_SERVICE_CLASS);
}
traceBeginAndSlog("StartConnectivityService");
try {
connectivity = new ConnectivityService(
context, networkManagement, networkStats, networkPolicy);
ServiceManager.addService(Context.CONNECTIVITY_SERVICE, connectivity);
networkStats.bindConnectivityManager(connectivity);
networkPolicy.bindConnectivityManager(connectivity);
} catch (Throwable e) {
reportWtf("starting Connectivity Service", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
traceBeginAndSlog("StartNsdService");
try {
serviceDiscovery = NsdService.create(context);
ServiceManager.addService(
Context.NSD_SERVICE, serviceDiscovery);
} catch (Throwable e) {
reportWtf("starting Service Discovery Service", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
if (!disableNonCoreServices) {
traceBeginAndSlog("StartUpdateLockService");
try {
ServiceManager.addService(Context.UPDATE_LOCK_SERVICE,
new UpdateLockService(context));
} catch (Throwable e) {
reportWtf("starting UpdateLockService", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
if (!disableNonCoreServices) {
mSystemServiceManager.startService(RecoverySystemService.class);
}
/*
* MountService has a few dependencies: Notification Manager and
* AppWidget Provider. Make sure MountService is completely started
* first before continuing.
*/
if (mountService != null && !mOnlyCore) {
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "WaitForAsecScan");
try {
mountService.waitForAsecScan();
} catch (RemoteException ignored) {
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
mSystemServiceManager.startService(NotificationManagerService.class);
notification = INotificationManager.Stub.asInterface(
ServiceManager.getService(Context.NOTIFICATION_SERVICE));
networkPolicy.bindNotificationManager(notification);
mSystemServiceManager.startService(DeviceStorageMonitorService.class);
if (!disableLocation) {
traceBeginAndSlog("StartLocationManagerService");
try {
location = new LocationManagerService(context);
ServiceManager.addService(Context.LOCATION_SERVICE, location);
} catch (Throwable e) {
reportWtf("starting Location Manager", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
traceBeginAndSlog("StartCountryDetectorService");
try {
countryDetector = new CountryDetectorService(context);
ServiceManager.addService(Context.COUNTRY_DETECTOR, countryDetector);
} catch (Throwable e) {
reportWtf("starting Country Detector", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
if (!disableNonCoreServices && !disableSearchManager) {
traceBeginAndSlog("StartSearchManagerService");
try {
mSystemServiceManager.startService(SEARCH_MANAGER_SERVICE_CLASS);
} catch (Throwable e) {
reportWtf("starting Search Service", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
mSystemServiceManager.startService(DropBoxManagerService.class);
if (!disableNonCoreServices && context.getResources().getBoolean(
R.bool.config_enableWallpaperService)) {
traceBeginAndSlog("StartWallpaperManagerService");
mSystemServiceManager.startService(WALLPAPER_SERVICE_CLASS);
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
traceBeginAndSlog("StartAudioService");
mSystemServiceManager.startService(AudioService.Lifecycle.class);
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
if (!disableNonCoreServices) {
mSystemServiceManager.startService(DockObserver.class);
if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_WATCH)) {
mSystemServiceManager.startService(THERMAL_OBSERVER_CLASS);
}
}
traceBeginAndSlog("StartWiredAccessoryManager");
try {
// Listen for wired headset changes
inputManager.setWiredAccessoryCallbacks(
new WiredAccessoryManager(context, inputManager));
} catch (Throwable e) {
reportWtf("starting WiredAccessoryManager", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
if (!disableNonCoreServices) {
if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_MIDI)) {
// Start MIDI Manager service
mSystemServiceManager.startService(MIDI_SERVICE_CLASS);
}
if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_USB_HOST)
|| mPackageManager.hasSystemFeature(
PackageManager.FEATURE_USB_ACCESSORY)) {
// Manage USB host and device support
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "StartUsbService");
mSystemServiceManager.startService(USB_SERVICE_CLASS);
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
if (!disableSerial) {
traceBeginAndSlog("StartSerialService");
try {
// Serial port support
serial = new SerialService(context);
ServiceManager.addService(Context.SERIAL_SERVICE, serial);
} catch (Throwable e) {
Slog.e(TAG, "Failure starting SerialService", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER,
"StartHardwarePropertiesManagerService");
try {
hardwarePropertiesService = new HardwarePropertiesManagerService(context);
ServiceManager.addService(Context.HARDWARE_PROPERTIES_SERVICE,
hardwarePropertiesService);
} catch (Throwable e) {
Slog.e(TAG, "Failure starting HardwarePropertiesManagerService", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
mSystemServiceManager.startService(TwilightService.class);
mSystemServiceManager.startService(JobSchedulerService.class);
mSystemServiceManager.startService(SoundTriggerService.class);
if (!disableNonCoreServices) {
if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_BACKUP)) {
mSystemServiceManager.startService(BACKUP_MANAGER_SERVICE_CLASS);
}
if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_APP_WIDGETS)
|| context.getResources().getBoolean(R.bool.config_enableAppWidgetService)) {
mSystemServiceManager.startService(APPWIDGET_SERVICE_CLASS);
}
if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_VOICE_RECOGNIZERS)) {
mSystemServiceManager.startService(VOICE_RECOGNITION_MANAGER_SERVICE_CLASS);
}
if (GestureLauncherService.isGestureLauncherEnabled(context.getResources())) {
Slog.i(TAG, "Gesture Launcher Service");
mSystemServiceManager.startService(GestureLauncherService.class);
}
mSystemServiceManager.startService(SensorNotificationService.class);
mSystemServiceManager.startService(ContextHubSystemService.class);
}
traceBeginAndSlog("StartDiskStatsService");
try {
ServiceManager.addService("diskstats", new DiskStatsService(context));
} catch (Throwable e) {
reportWtf("starting DiskStats Service", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
if (!disableSamplingProfiler) {
traceBeginAndSlog("StartSamplingProfilerService");
try {
// need to add this service even if SamplingProfilerIntegration.isEnabled()
// is false, because it is this service that detects system property change and
// turns on SamplingProfilerIntegration. Plus, when sampling profiler doesn't work,
// there is little overhead for running this service.
ServiceManager.addService("samplingprofiler",
new SamplingProfilerService(context));
} catch (Throwable e) {
reportWtf("starting SamplingProfiler Service", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
if (!disableNetwork && !disableNetworkTime) {
traceBeginAndSlog("StartNetworkTimeUpdateService");
try {
networkTimeUpdater = new NetworkTimeUpdateService(context);
ServiceManager.addService("network_time_update_service", networkTimeUpdater);
} catch (Throwable e) {
reportWtf("starting NetworkTimeUpdate service", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
traceBeginAndSlog("StartCommonTimeManagementService");
try {
commonTimeMgmtService = new CommonTimeManagementService(context);
ServiceManager.addService("commontime_management", commonTimeMgmtService);
} catch (Throwable e) {
reportWtf("starting CommonTimeManagementService service", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
if (!disableNetwork) {
traceBeginAndSlog("CertBlacklister");
try {
CertBlacklister blacklister = new CertBlacklister(context);
} catch (Throwable e) {
reportWtf("starting CertBlacklister", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
if (!disableNonCoreServices) {
// Dreams (interactive idle-time views, a/k/a screen savers, and doze mode)
mSystemServiceManager.startService(DreamManagerService.class);
}
if (!disableNonCoreServices && ZygoteInit.PRELOAD_RESOURCES) {
traceBeginAndSlog("StartAssetAtlasService");
try {
atlas = new AssetAtlasService(context);
ServiceManager.addService(AssetAtlasService.ASSET_ATLAS_SERVICE, atlas);
} catch (Throwable e) {
reportWtf("starting AssetAtlasService", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
if (!disableNonCoreServices) {
ServiceManager.addService(GraphicsStatsService.GRAPHICS_STATS_SERVICE,
new GraphicsStatsService(context));
}
if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_PRINTING)) {
mSystemServiceManager.startService(PRINT_MANAGER_SERVICE_CLASS);
}
mSystemServiceManager.startService(RestrictionsManagerService.class);
mSystemServiceManager.startService(MediaSessionService.class);
if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_HDMI_CEC)) {
mSystemServiceManager.startService(HdmiControlService.class);
}
if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_LIVE_TV)) {
mSystemServiceManager.startService(TvInputManagerService.class);
}
if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_PICTURE_IN_PICTURE)) {
mSystemServiceManager.startService(MediaResourceMonitorService.class);
}
if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_LEANBACK)) {
mSystemServiceManager.startService(TvRemoteService.class);
}
if (!disableNonCoreServices) {
traceBeginAndSlog("StartMediaRouterService");
try {
mediaRouter = new MediaRouterService(context);
ServiceManager.addService(Context.MEDIA_ROUTER_SERVICE, mediaRouter);
} catch (Throwable e) {
reportWtf("starting MediaRouterService", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
if (!disableTrustManager) {
mSystemServiceManager.startService(TrustManagerService.class);
}
if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_FINGERPRINT)) {
mSystemServiceManager.startService(FingerprintService.class);
}
traceBeginAndSlog("StartBackgroundDexOptService");
try {
BackgroundDexOptService.schedule(context);
} catch (Throwable e) {
reportWtf("starting BackgroundDexOptService", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
// LauncherAppsService uses ShortcutService.
mSystemServiceManager.startService(ShortcutService.Lifecycle.class);
mSystemServiceManager.startService(LauncherAppsService.class);
}
if (!disableNonCoreServices && !disableMediaProjection) {
mSystemServiceManager.startService(MediaProjectionManagerService.class);
}
if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_WATCH)) {
mSystemServiceManager.startService(WEAR_BLUETOOTH_SERVICE_CLASS);
}
// Before things start rolling, be sure we have decided whether
// we are in safe mode.
final boolean safeMode = wm.detectSafeMode();
if (safeMode) {
mActivityManagerService.enterSafeMode();
// Disable the JIT for the system_server process
VMRuntime.getRuntime().disableJitCompilation();
} else {
// Enable the JIT for the system_server process
VMRuntime.getRuntime().startJitCompilation();
}
// MMS service broker
mmsService = mSystemServiceManager.startService(MmsServiceBroker.class);
// It is now time to start up the app processes...
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "MakeVibratorServiceReady");
try {
vibrator.systemReady();
} catch (Throwable e) {
reportWtf("making Vibrator Service ready", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "MakeLockSettingsServiceReady");
if (lockSettings != null) {
try {
lockSettings.systemReady();
} catch (Throwable e) {
reportWtf("making Lock Settings Service ready", e);
}
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
// Needed by DevicePolicyManager for initialization
mSystemServiceManager.startBootPhase(SystemService.PHASE_LOCK_SETTINGS_READY);
mSystemServiceManager.startBootPhase(SystemService.PHASE_SYSTEM_SERVICES_READY);
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "MakeWindowManagerServiceReady");
try {
wm.systemReady();
} catch (Throwable e) {
reportWtf("making Window Manager Service ready", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
if (safeMode) {
mActivityManagerService.showSafeModeOverlay();
}
// Update the configuration for this context by hand, because we're going
// to start using it before the config change done in wm.systemReady() will
// propagate to it.
Configuration config = wm.computeNewConfiguration();
DisplayMetrics metrics = new DisplayMetrics();
WindowManager w = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE);
w.getDefaultDisplay().getMetrics(metrics);
context.getResources().updateConfiguration(config, metrics);
// The system context's theme may be configuration-dependent.
final Theme systemTheme = context.getTheme();
if (systemTheme.getChangingConfigurations() != 0) {
systemTheme.rebase();
}
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "MakePowerManagerServiceReady");
try {
// TODO: use boot phase
mPowerManagerService.systemReady(mActivityManagerService.getAppOpsService());
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
} catch (Throwable e) {
reportWtf("making Power Manager Service ready", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "MakePackageManagerServiceReady");
try {
mPackageManagerService.systemReady();
} catch (Throwable e) {
reportWtf("making Package Manager Service ready", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "MakeDisplayManagerServiceReady");
try {
// TODO: use boot phase and communicate these flags some other way
mDisplayManagerService.systemReady(safeMode, mOnlyCore);
} catch (Throwable e) {
reportWtf("making Display Manager Service ready", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
// These are needed to propagate to the runnable below.
final NetworkManagementService networkManagementF = networkManagement;
final NetworkStatsService networkStatsF = networkStats;
final NetworkPolicyManagerService networkPolicyF = networkPolicy;
final ConnectivityService connectivityF = connectivity;
final NetworkScoreService networkScoreF = networkScore;
final LocationManagerService locationF = location;
final CountryDetectorService countryDetectorF = countryDetector;
final NetworkTimeUpdateService networkTimeUpdaterF = networkTimeUpdater;
final CommonTimeManagementService commonTimeMgmtServiceF = commonTimeMgmtService;
final AssetAtlasService atlasF = atlas;
final InputManagerService inputManagerF = inputManager;
final TelephonyRegistry telephonyRegistryF = telephonyRegistry;
final MediaRouterService mediaRouterF = mediaRouter;
final MmsServiceBroker mmsServiceF = mmsService;
// We now tell the activity manager it is okay to run third party
// code. It will call back into us once it has gotten to the state
// where third party code can really run (but before it has actually
// started launching the initial applications), for us to complete our
// initialization.
mActivityManagerService.systemReady(new Runnable() {
@Override
public void run() {
Slog.i(TAG, "Making services ready");
mSystemServiceManager.startBootPhase(
SystemService.PHASE_ACTIVITY_MANAGER_READY);
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "PhaseActivityManagerReady");
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "StartObservingNativeCrashes");
try {
mActivityManagerService.startObservingNativeCrashes();
} catch (Throwable e) {
reportWtf("observing native crashes", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
if (!mOnlyCore) {
Slog.i(TAG, "WebViewFactory preparation");
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "WebViewFactoryPreparation");
mWebViewUpdateService.prepareWebViewInSystemServer();
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "StartSystemUI");
try {
startSystemUi(context);
} catch (Throwable e) {
reportWtf("starting System UI", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "MakeNetworkScoreReady");
try {
if (networkScoreF != null) networkScoreF.systemReady();
} catch (Throwable e) {
reportWtf("making Network Score Service ready", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "MakeNetworkManagementServiceReady");
try {
if (networkManagementF != null) networkManagementF.systemReady();
} catch (Throwable e) {
reportWtf("making Network Managment Service ready", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "MakeNetworkStatsServiceReady");
try {
if (networkStatsF != null) networkStatsF.systemReady();
} catch (Throwable e) {
reportWtf("making Network Stats Service ready", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "MakeNetworkPolicyServiceReady");
try {
if (networkPolicyF != null) networkPolicyF.systemReady();
} catch (Throwable e) {
reportWtf("making Network Policy Service ready", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "MakeConnectivityServiceReady");
try {
if (connectivityF != null) connectivityF.systemReady();
} catch (Throwable e) {
reportWtf("making Connectivity Service ready", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
Watchdog.getInstance().start();
// It is now okay to let the various system services start their
// third party code...
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "PhaseThirdPartyAppsCanStart");
mSystemServiceManager.startBootPhase(
SystemService.PHASE_THIRD_PARTY_APPS_CAN_START);
try {
if (locationF != null) locationF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying Location Service running", e);
}
try {
if (countryDetectorF != null) countryDetectorF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying CountryDetectorService running", e);
}
try {
if (networkTimeUpdaterF != null) networkTimeUpdaterF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying NetworkTimeService running", e);
}
try {
if (commonTimeMgmtServiceF != null) {
commonTimeMgmtServiceF.systemRunning();
}
} catch (Throwable e) {
reportWtf("Notifying CommonTimeManagementService running", e);
}
try {
if (atlasF != null) atlasF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying AssetAtlasService running", e);
}
try {
// TODO(BT) Pass parameter to input manager
if (inputManagerF != null) inputManagerF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying InputManagerService running", e);
}
try {
if (telephonyRegistryF != null) telephonyRegistryF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying TelephonyRegistry running", e);
}
try {
if (mediaRouterF != null) mediaRouterF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying MediaRouterService running", e);
}
try {
if (mmsServiceF != null) mmsServiceF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying MmsService running", e);
}
try {
if (networkScoreF != null) networkScoreF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying NetworkScoreService running", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
});
}
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