/*
 * Copyright (C) 2006 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.server;

import android.app.ActivityThread;
import android.app.INotificationManager;
import android.app.usage.UsageStatsManagerInternal;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageItemInfo;
import android.content.pm.PackageManager;
import android.content.res.Configuration;
import android.content.res.Resources.Theme;
import android.database.sqlite.SQLiteCompatibilityWalFlags;
import android.database.sqlite.SQLiteGlobal;
import android.hardware.display.DisplayManagerInternal;
import android.os.BaseBundle;
import android.os.Binder;
import android.os.Build;
import android.os.Environment;
import android.os.FactoryTest;
import android.os.FileUtils;
import android.os.IIncidentManager;
import android.os.Looper;
import android.os.Message;
import android.os.Parcel;
import android.os.PowerManager;
import android.os.Process;
import android.os.ServiceManager;
import android.os.StrictMode;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.os.Trace;
import android.os.UserHandle;
import android.os.storage.IStorageManager;
import android.util.DisplayMetrics;
import android.util.EventLog;
import android.util.Slog;
import android.util.TimingsTraceLog;
import android.view.WindowManager;

import com.android.internal.R;
import com.android.internal.app.ColorDisplayController;
import com.android.internal.logging.MetricsLogger;
import com.android.internal.notification.SystemNotificationChannels;
import com.android.internal.os.BinderInternal;
import com.android.internal.util.ConcurrentUtils;
import com.android.internal.util.EmergencyAffordanceManager;
import com.android.internal.widget.ILockSettings;
import com.android.server.accessibility.AccessibilityManagerService;
import com.android.server.am.ActivityManagerService;
import com.android.server.audio.AudioService;
import com.android.server.broadcastradio.BroadcastRadioService;
import com.android.server.camera.CameraServiceProxy;
import com.android.server.clipboard.ClipboardService;
import com.android.server.connectivity.IpConnectivityMetrics;
import com.android.server.coverage.CoverageService;
import com.android.server.devicepolicy.DevicePolicyManagerService;
import com.android.server.display.ColorDisplayService;
import com.android.server.display.DisplayManagerService;
import com.android.server.dreams.DreamManagerService;
import com.android.server.emergency.EmergencyAffordanceService;
import com.android.server.fingerprint.FingerprintService;
import com.android.server.hdmi.HdmiControlService;
import com.android.server.input.InputManagerService;
import com.android.server.job.JobSchedulerService;
import com.android.server.lights.LightsService;
import com.android.server.media.MediaResourceMonitorService;
import com.android.server.media.MediaRouterService;
import com.android.server.media.MediaUpdateService;
import com.android.server.media.MediaSessionService;
import com.android.server.media.projection.MediaProjectionManagerService;
import com.android.server.net.NetworkPolicyManagerService;
import com.android.server.net.NetworkStatsService;
import com.android.server.net.watchlist.NetworkWatchlistService;
import com.android.server.notification.NotificationManagerService;
import com.android.server.oemlock.OemLockService;
import com.android.server.om.OverlayManagerService;
import com.android.server.os.DeviceIdentifiersPolicyService;
import com.android.server.os.SchedulingPolicyService;
import com.android.server.pm.BackgroundDexOptService;
import com.android.server.pm.CrossProfileAppsService;
import com.android.server.pm.Installer;
import com.android.server.pm.LauncherAppsService;
import com.android.server.pm.OtaDexoptService;
import com.android.server.pm.PackageManagerService;
import com.android.server.pm.ShortcutService;
import com.android.server.pm.UserManagerService;
import com.android.server.policy.PhoneWindowManager;
import com.android.server.power.PowerManagerService;
import com.android.server.power.ShutdownThread;
import com.android.server.restrictions.RestrictionsManagerService;
import com.android.server.security.KeyAttestationApplicationIdProviderService;
import com.android.server.security.KeyChainSystemService;
import com.android.server.soundtrigger.SoundTriggerService;
import com.android.server.stats.StatsCompanionService;
import com.android.server.statusbar.StatusBarManagerService;
import com.android.server.storage.DeviceStorageMonitorService;
import com.android.server.telecom.TelecomLoaderService;
import com.android.server.textclassifier.TextClassificationManagerService;
import com.android.server.trust.TrustManagerService;
import com.android.server.tv.TvInputManagerService;
import com.android.server.tv.TvRemoteService;
import com.android.server.twilight.TwilightService;
import com.android.server.usage.UsageStatsService;
import com.android.server.vr.VrManagerService;
import com.android.server.webkit.WebViewUpdateService;
import com.android.server.wm.WindowManagerService;

import dalvik.system.VMRuntime;

import java.io.File;
import java.io.IOException;
import java.util.Locale;
import java.util.Timer;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Future;

import static android.os.IServiceManager.DUMP_FLAG_PRIORITY_CRITICAL;
import static android.os.IServiceManager.DUMP_FLAG_PRIORITY_HIGH;
import static android.os.IServiceManager.DUMP_FLAG_PRIORITY_NORMAL;
import static android.os.IServiceManager.DUMP_FLAG_PROTO;
import static android.view.Display.DEFAULT_DISPLAY;

public final class SystemServer {
    private static final String TAG = "SystemServer";

    // Tag for timing measurement of main thread.
    private static final String SYSTEM_SERVER_TIMING_TAG = "SystemServerTiming";
    // Tag for timing measurement of non-main asynchronous operations.
    private static final String SYSTEM_SERVER_TIMING_ASYNC_TAG = SYSTEM_SERVER_TIMING_TAG + "Async";

    private static final TimingsTraceLog BOOT_TIMINGS_TRACE_LOG
            = new TimingsTraceLog(SYSTEM_SERVER_TIMING_TAG, Trace.TRACE_TAG_SYSTEM_SERVER);

    private static final String ENCRYPTING_STATE = "trigger_restart_min_framework";
    private static final String ENCRYPTED_STATE = "1";

    private static final long SNAPSHOT_INTERVAL = 60 * 60 * 1000; // 1hr

    // The earliest supported time.  We pick one day into 1970, to
    // give any timezone code room without going into negative time.
    private static final long EARLIEST_SUPPORTED_TIME = 86400 * 1000;

    private static final long SLOW_DISPATCH_THRESHOLD_MS = 100;
    private static final long SLOW_DELIVERY_THRESHOLD_MS = 200;

    /*
     * Implementation class names. TODO: Move them to a codegen class or load
     * them from the build system somehow.
     */
    private static final String BACKUP_MANAGER_SERVICE_CLASS =
            "com.android.server.backup.BackupManagerService$Lifecycle";
    private static final String APPWIDGET_SERVICE_CLASS =
            "com.android.server.appwidget.AppWidgetService";
    private static final String VOICE_RECOGNITION_MANAGER_SERVICE_CLASS =
            "com.android.server.voiceinteraction.VoiceInteractionManagerService";
    private static final String PRINT_MANAGER_SERVICE_CLASS =
            "com.android.server.print.PrintManagerService";
    private static final String COMPANION_DEVICE_MANAGER_SERVICE_CLASS =
            "com.android.server.companion.CompanionDeviceManagerService";
    private static final String USB_SERVICE_CLASS =
            "com.android.server.usb.UsbService$Lifecycle";
    private static final String MIDI_SERVICE_CLASS =
            "com.android.server.midi.MidiService$Lifecycle";
    private static final String WIFI_SERVICE_CLASS =
            "com.android.server.wifi.WifiService";
    private static final String WIFI_AWARE_SERVICE_CLASS =
            "com.android.server.wifi.aware.WifiAwareService";
    private static final String WIFI_P2P_SERVICE_CLASS =
            "com.android.server.wifi.p2p.WifiP2pService";
    private static final String LOWPAN_SERVICE_CLASS =
            "com.android.server.lowpan.LowpanService";
    private static final String ETHERNET_SERVICE_CLASS =
            "com.android.server.ethernet.EthernetService";
    private static final String JOB_SCHEDULER_SERVICE_CLASS =
            "com.android.server.job.JobSchedulerService";
    private static final String LOCK_SETTINGS_SERVICE_CLASS =
            "com.android.server.locksettings.LockSettingsService$Lifecycle";
    private static final String STORAGE_MANAGER_SERVICE_CLASS =
            "com.android.server.StorageManagerService$Lifecycle";
    private static final String STORAGE_STATS_SERVICE_CLASS =
            "com.android.server.usage.StorageStatsService$Lifecycle";
    private static final String SEARCH_MANAGER_SERVICE_CLASS =
            "com.android.server.search.SearchManagerService$Lifecycle";
    private static final String THERMAL_OBSERVER_CLASS =
            "com.google.android.clockwork.ThermalObserver";
    private static final String WEAR_CONFIG_SERVICE_CLASS =
            "com.google.android.clockwork.WearConfigManagerService";
    private static final String WEAR_CONNECTIVITY_SERVICE_CLASS =
            "com.android.clockwork.connectivity.WearConnectivityService";
    private static final String WEAR_SIDEKICK_SERVICE_CLASS =
            "com.google.android.clockwork.sidekick.SidekickService";
    private static final String WEAR_DISPLAY_SERVICE_CLASS =
            "com.google.android.clockwork.display.WearDisplayService";
    private static final String WEAR_LEFTY_SERVICE_CLASS =
            "com.google.android.clockwork.lefty.WearLeftyService";
    private static final String WEAR_TIME_SERVICE_CLASS =
            "com.google.android.clockwork.time.WearTimeService";
    private static final String WEAR_GLOBAL_ACTIONS_SERVICE_CLASS =
            "com.android.clockwork.globalactions.GlobalActionsService";
    private static final String ACCOUNT_SERVICE_CLASS =
            "com.android.server.accounts.AccountManagerService$Lifecycle";
    private static final String CONTENT_SERVICE_CLASS =
            "com.android.server.content.ContentService$Lifecycle";
    private static final String WALLPAPER_SERVICE_CLASS =
            "com.android.server.wallpaper.WallpaperManagerService$Lifecycle";
    private static final String AUTO_FILL_MANAGER_SERVICE_CLASS =
            "com.android.server.autofill.AutofillManagerService";
    private static final String TIME_ZONE_RULES_MANAGER_SERVICE_CLASS =
            "com.android.server.timezone.RulesManagerService$Lifecycle";
    private static final String IOT_SERVICE_CLASS =
            "com.google.android.things.services.IoTSystemService";
    private static final String SLICE_MANAGER_SERVICE_CLASS =
            "com.android.server.slice.SliceManagerService$Lifecycle";
    private static final String CAR_SERVICE_HELPER_SERVICE_CLASS =
            "com.android.internal.car.CarServiceHelperService";

    private static final String PERSISTENT_DATA_BLOCK_PROP = "ro.frp.pst";

    private static final String UNCRYPT_PACKAGE_FILE = "/cache/recovery/uncrypt_file";
    private static final String BLOCK_MAP_FILE = "/cache/recovery/block.map";

    // maximum number of binder threads used for system_server
    // will be higher than the system default
    private static final int sMaxBinderThreads = 31;

    
Default theme used by the system context. This is used to style
system-provided dialogs, such as the Power Off dialog, and other
visual content.
/**
     * Default theme used by the system context. This is used to style
     * system-provided dialogs, such as the Power Off dialog, and other
     * visual content.
     */
    private static final int DEFAULT_SYSTEM_THEME =
            com.android.internal.R.style.Theme_DeviceDefault_System;

    private final int mFactoryTestMode;
    private Timer mProfilerSnapshotTimer;

    private Context mSystemContext;
    private SystemServiceManager mSystemServiceManager;

    // TODO: remove all of these references by improving dependency resolution and boot phases
    private PowerManagerService mPowerManagerService;
    private ActivityManagerService mActivityManagerService;
    private WebViewUpdateService mWebViewUpdateService;
    private DisplayManagerService mDisplayManagerService;
    private PackageManagerService mPackageManagerService;
    private PackageManager mPackageManager;
    private ContentResolver mContentResolver;
    private EntropyMixer mEntropyMixer;

    private boolean mOnlyCore;
    private boolean mFirstBoot;
    private final boolean mRuntimeRestart;
    private final long mRuntimeStartElapsedTime;
    private final long mRuntimeStartUptime;

    private static final String START_SENSOR_SERVICE = "StartSensorService";
    private static final String START_HIDL_SERVICES = "StartHidlServices";


    private Future<?> mSensorServiceStart;
    private Future<?> mZygotePreload;

    
Start the sensor service. This is a blocking call and can take time.
/**
     * Start the sensor service. This is a blocking call and can take time.
     */
    private static native void startSensorService();

    
Start all HIDL services that are run inside the system server. This
may take some time.
/**
     * Start all HIDL services that are run inside the system server. This
     * may take some time.
     */
    private static native void startHidlServices();

    
The main entry point from zygote.
/**
     * The main entry point from zygote.
     */
    public static void main(String[] args) {
        new SystemServer().run();
    }

    public SystemServer() {
        // Check for factory test mode.
        mFactoryTestMode = FactoryTest.getMode();
        // Remember if it's runtime restart(when sys.boot_completed is already set) or reboot
        mRuntimeRestart = "1".equals(SystemProperties.get("sys.boot_completed"));

        mRuntimeStartElapsedTime = SystemClock.elapsedRealtime();
        mRuntimeStartUptime = SystemClock.uptimeMillis();
    }

    private void run() {
        try {
            traceBeginAndSlog("InitBeforeStartServices");
            // If a device's clock is before 1970 (before 0), a lot of
            // APIs crash dealing with negative numbers, notably
            // java.io.File#setLastModified, so instead we fake it and
            // hope that time from cell towers or NTP fixes it shortly.
            if (System.currentTimeMillis() < EARLIEST_SUPPORTED_TIME) {
                Slog.w(TAG, "System clock is before 1970; setting to 1970.");
                SystemClock.setCurrentTimeMillis(EARLIEST_SUPPORTED_TIME);
            }

            //
            // Default the timezone property to GMT if not set.
            //
            String timezoneProperty =  SystemProperties.get("persist.sys.timezone");
            if (timezoneProperty == null || timezoneProperty.isEmpty()) {
                Slog.w(TAG, "Timezone not set; setting to GMT.");
                SystemProperties.set("persist.sys.timezone", "GMT");
            }

            // If the system has "persist.sys.language" and friends set, replace them with
            // "persist.sys.locale". Note that the default locale at this point is calculated
            // using the "-Duser.locale" command line flag. That flag is usually populated by
            // AndroidRuntime using the same set of system properties, but only the system_server
            // and system apps are allowed to set them.
            //
            // NOTE: Most changes made here will need an equivalent change to
            // core/jni/AndroidRuntime.cpp
            if (!SystemProperties.get("persist.sys.language").isEmpty()) {
                final String languageTag = Locale.getDefault().toLanguageTag();

                SystemProperties.set("persist.sys.locale", languageTag);
                SystemProperties.set("persist.sys.language", "");
                SystemProperties.set("persist.sys.country", "");
                SystemProperties.set("persist.sys.localevar", "");
            }

            // The system server should never make non-oneway calls
            Binder.setWarnOnBlocking(true);
            // The system server should always load safe labels
            PackageItemInfo.setForceSafeLabels(true);

            // Default to FULL within the system server.
            SQLiteGlobal.sDefaultSyncMode = SQLiteGlobal.SYNC_MODE_FULL;

            // Deactivate SQLiteCompatibilityWalFlags until settings provider is initialized
            SQLiteCompatibilityWalFlags.init(null);

            // Here we go!
            Slog.i(TAG, "Entered the Android system server!");
            int uptimeMillis = (int) SystemClock.elapsedRealtime();
            EventLog.writeEvent(EventLogTags.BOOT_PROGRESS_SYSTEM_RUN, uptimeMillis);
            if (!mRuntimeRestart) {
                MetricsLogger.histogram(null, "boot_system_server_init", uptimeMillis);
            }

            // In case the runtime switched since last boot (such as when
            // the old runtime was removed in an OTA), set the system
            // property so that it is in sync. We can | xq oqi't do this in
            // libnativehelper's JniInvocation::Init code where we already
            // had to fallback to a different runtime because it is
            // running as root and we need to be the system user to set
            // the property. http://b/11463182
            SystemProperties.set("persist.sys.dalvik.vm.lib.2", VMRuntime.getRuntime().vmLibrary());

            // Mmmmmm... more memory!
            VMRuntime.getRuntime().clearGrowthLimit();

            // The system server has to run all of the time, so it needs to be
            // as efficient as possible with its memory usage.
            VMRuntime.getRuntime().setTargetHeapUtilization(0.8f);

            // Some devices rely on runtime fingerprint generation, so make sure
            // we've defined it before booting further.
            Build.ensureFingerprintProperty();

            // Within the system server, it is an error to access Environment paths without
            // explicitly specifying a user.
            Environment.setUserRequired(true);

            // Within the system server, any incoming Bundles should be defused
            // to avoid throwing BadParcelableException.
            BaseBundle.setShouldDefuse(true);

            // Within the system server, when parceling exceptions, include the stack trace
            Parcel.setStackTraceParceling(true);

            // Ensure binder calls into the system always run at foreground priority.
            BinderInternal.disableBackgroundScheduling(true);

            // Increase the number of binder threads in system_server
            BinderInternal.setMaxThreads(sMaxBinderThreads);

            // Prepare the main looper thread (this thread).
            android.os.Process.setThreadPriority(
                android.os.Process.THREAD_PRIORITY_FOREGROUND);
            android.os.Process.setCanSelfBackground(false);
            Looper.prepareMainLooper();
            Looper.getMainLooper().setSlowLogThresholdMs(
                    SLOW_DISPATCH_THRESHOLD_MS, SLOW_DELIVERY_THRESHOLD_MS);

            // Initialize native services.
            System.loadLibrary("android_servers");

            // Check whether we failed to shut down last time we tried.
            // This call may not return.
            performPendingShutdown();

            // Initialize the system context.
            createSystemContext();

            // Create the system service manager.
            mSystemServiceManager = new SystemServiceManager(mSystemContext);
            mSystemServiceManager.setStartInfo(mRuntimeRestart,
                    mRuntimeStartElapsedTime, mRuntimeStartUptime);
            LocalServices.addService(SystemServiceManager.class, mSystemServiceManager);
            // Prepare the thread pool for init tasks that can be parallelized
            SystemServerInitThreadPool.get();
        } finally {
            traceEnd();  // InitBeforeStartServices
        }

        // Start services.
        try {
            traceBeginAndSlog("StartServices");
            startBootstrapServices();
            startCoreServices();
            startOtherServices();
            SystemServerInitThreadPool.shutdown();
        } catch (Throwable ex) {
            Slog.e("System", "******************************************");
            Slog.e("System", "************ Failure starting system services", ex);
            throw ex;
        } finally {
            traceEnd();
        }

        StrictMode.initVmDefaults(null);

        if (!mRuntimeRestart && !isFirstBootOrUpgrade()) {
            int uptimeMillis = (int) SystemClock.elapsedRealtime();
            MetricsLogger.histogram(null, "boot_system_server_ready", uptimeMillis);
            final int MAX_UPTIME_MILLIS = 60 * 1000;
            if (uptimeMillis > MAX_UPTIME_MILLIS) {
                Slog.wtf(SYSTEM_SERVER_TIMING_TAG,
                        "SystemServer init took too long. uptimeMillis=" + uptimeMillis);
            }
        }

        // Loop forever.
        Looper.loop();
        throw new RuntimeException("Main thread loop unexpectedly exited");
    }

    private boolean isFirstBootOrUpgrade() {
        return mPackageManagerService.isFirstBoot() || mPackageManagerService.isUpgrade();
    }

    private void reportWtf(String msg, Throwable e) {
        Slog.w(TAG, "***********************************************");
        Slog.wtf(TAG, "BOOT FAILURE " + msg, e);
    }

    private void performPendingShutdown() {
        final String shutdownAction = SystemProperties.get(
                ShutdownThread.SHUTDOWN_ACTION_PROPERTY, "");
        if (shutdownAction != null && shutdownAction.length() > 0) {
            boolean reboot = (shutdownAction.charAt(0) == '1');

            final String reason;
            if (shutdownAction.length() > 1) {
                reason = shutdownAction.substring(1, shutdownAction.length());
            } else {
                reason = null;
            }

            // If it's a pending reboot into recovery to apply an update,
            // always make sure uncrypt gets executed properly when needed.
            // If '/cache/recovery/block.map' hasn't been created, stop the
            // reboot which will fail for sure, and get a chance to capture a
            // bugreport when that's still feasible. (Bug: 26444951)
            if (reason != null && reason.startsWith(PowerManager.REBOOT_RECOVERY_UPDATE)) {
                File packageFile = new File(UNCRYPT_PACKAGE_FILE);
                if (packageFile.exists()) {
                    String filename = null;
                    try {
                        filename = FileUtils.readTextFile(packageFile, 0, null);
                    } catch (IOException e) {
                        Slog.e(TAG, "Error reading uncrypt package file", e);
                    }

                    if (filename != null && filename.startsWith("/data")) {
                        if (!new File(BLOCK_MAP_FILE).exists()) {
                            Slog.e(TAG, "Can't find block map file, uncrypt failed or " +
                                       "unexpected runtime restart?");
                            return;
                        }
                    }
                }
            }
            Runnable runnable = new Runnable() {
                @Override
                public void run() {
                    synchronized (this) {
                        ShutdownThread.rebootOrShutdown(null, reboot, reason);
                    }
                }
            };

            // ShutdownThread must run on a looper capable of displaying the UI.
            Message msg = Message.obtain(UiThread.getHandler(), runnable);
            msg.setAsynchronous(true);
            UiThread.getHandler().sendMessage(msg);

        }
    }

    private void createSystemContext() {
        ActivityThread activityThread = ActivityThread.systemMain();
        mSystemContext = activityThread.getSystemContext();
        mSystemContext.setTheme(DEFAULT_SYSTEM_THEME);

        final Context systemUiContext = activityThread.getSystemUiContext();
        systemUiContext.setTheme(DEFAULT_SYSTEM_THEME);
    }

    
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.
/**
     * 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() {
        Slog.i(TAG, "Reading configuration...");
        final String TAG_SYSTEM_CONFIG = "ReadingSystemConfig";
        traceBeginAndSlog(TAG_SYSTEM_CONFIG);
        SystemServerInitThreadPool.get().submit(SystemConfig::getInstance, TAG_SYSTEM_CONFIG);
        traceEnd();

        // 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.
        traceBeginAndSlog("StartInstaller");
        Installer installer = mSystemServiceManager.startService(Installer.class);
        traceEnd();

        // In some cases after launching an app we need to access device identifiers,
        // therefore register the device identifier policy before the activity manager.
        traceBeginAndSlog("DeviceIdentifiersPolicyService");
        mSystemServiceManager.startService(DeviceIdentifiersPolicyService.class);
        traceEnd();

        // Activity manager runs the show.
        traceBeginAndSlog("StartActivityManager");
        mActivityManagerService = mSystemServiceManager.startService(
                ActivityManagerService.Lifecycle.class).getService();
        mActivityManagerService.setSystemServiceManager(mSystemServiceManager);
        mActivityManagerService.setInstaller(installer);
        traceEnd();

        // 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).
        traceBeginAndSlog("StartPowerManager");
        mPowerManagerService = mSystemServiceManager.startService(PowerManagerService.class);
        traceEnd();

        // Now that the power manager has been started, let the activity manager
        // initialize power management features.
        traceBeginAndSlog("InitPowerManagement");
        mActivityManagerService.initPowerManagement();
        traceEnd();

        // Bring up recovery system in case a rescue party needs a reboot
        traceBeginAndSlog("StartRecoverySystemService");
        mSystemServiceManager.startService(RecoverySystemService.class);
        traceEnd();

        // Now that we have the bare essentials of the OS up and running, take
        // note that we just booted, which might send out a rescue party if
        // we're stuck in a runtime restart loop.
        RescueParty.noteBoot(mSystemContext);

        // Manages LEDs and display backlight so we need it to bring up the display.
        traceBeginAndSlog("StartLightsService");
        mSystemServiceManager.startService(LightsService.class);
        traceEnd();

        traceBeginAndSlog("StartSidekickService");
        // Package manager isn't started yet; need to use SysProp not hardware feature
        if (SystemProperties.getBoolean("config.enable_sidekick_graphics", false)) {
            mSystemServiceManager.startService(WEAR_SIDEKICK_SERVICE_CLASS);
        }
        traceEnd();

        // Display manager is needed to provide display metrics before package manager
        // starts up.
        traceBeginAndSlog("StartDisplayManager");
        mDisplayManagerService = mSystemServiceManager.startService(DisplayManagerService.class);
        traceEnd();

        // We need the default display before we can initialize the package manager.
        traceBeginAndSlog("WaitForDisplay");
        mSystemServiceManager.startBootPhase(SystemService.PHASE_WAIT_FOR_DEFAULT_DISPLAY);
        traceEnd();

        // 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.
        if (!mRuntimeRestart) {
            MetricsLogger.histogram(null, "boot_package_manager_init_start",
                    (int) SystemClock.elapsedRealtime());
        }
        traceBeginAndSlog("StartPackageManagerService");
        mPackageManagerService = PackageManagerService.main(mSystemContext, installer,
                mFactoryTestMode != FactoryTest.FACTORY_TEST_OFF, mOnlyCore);
        mFirstBoot = mPackageManagerService.isFirstBoot();
        mPackageManager = mSystemContext.getPackageManager();
        traceEnd();
        if (!mRuntimeRestart && !isFirstBootOrUpgrade()) {
            MetricsLogger.histogram(null, "boot_package_manager_init_ready",
                    (int) SystemClock.elapsedRealtime());
        }
        // 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 {
                    traceEnd();
                }
            }
        }

        traceBeginAndSlog("StartUserManagerService");
        mSystemServiceManager.startService(UserManagerService.LifeCycle.class);
        traceEnd();

        // Initialize attribute cache used to cache resources from packages.
        traceBeginAndSlog("InitAttributerCache");
        AttributeCache.init(mSystemContext);
        traceEnd();

        // Set up the Application instance for the system process and get started.
        traceBeginAndSlog("SetSystemProcess");
        mActivityManagerService.setSystemProcess();
        traceEnd();

        // DisplayManagerService needs to setup android.display scheduling related policies
        // since setSystemProcess() would have overridden policies due to setProcessGroup
        mDisplayManagerService.setupSchedulerPolicies();

        // Manages Overlay packages
        traceBeginAndSlog("StartOverlayManagerService");
        OverlayManagerService overlayManagerService = new OverlayManagerService(
                mSystemContext, installer);
        mSystemServiceManager.startService(overlayManagerService);
        traceEnd();

        if (SystemProperties.getInt("persist.sys.displayinset.top", 0) > 0) {
            // DisplayManager needs the overlay immediately.
            overlayManagerService.updateSystemUiContext();
            LocalServices.getService(DisplayManagerInternal.class).onOverlayChanged();
        }

        // The sensor service needs access to package manager service, app ops
        // service, and permissions service, therefore we start it after them.
        // Start sensor service in a separate thread. Completion should be checked
        // before using it.
        mSensorServiceStart = SystemServerInitThreadPool.get().submit(() -> {
            TimingsTraceLog traceLog = new TimingsTraceLog(
                    SYSTEM_SERVER_TIMING_ASYNC_TAG, Trace.TRACE_TAG_SYSTEM_SERVER);
            traceLog.traceBegin(START_SENSOR_SERVICE);
            startSensorService();
            traceLog.traceEnd();
        }, START_SENSOR_SERVICE);
    }

    
Starts some essential services that are not tangled up in the bootstrap process.
/**
     * Starts some essential services that are not tangled up in the bootstrap process.
     */
    private void startCoreServices() {
        traceBeginAndSlog("StartBatteryService");
        // Tracks the battery level.  Requires LightService.
        mSystemServiceManager.startService(BatteryService.class);
        traceEnd();

        // Tracks application usage stats.
        traceBeginAndSlog("StartUsageService");
        mSystemServiceManager.startService(UsageStatsService.class);
        mActivityManagerService.setUsageStatsManager(
                LocalServices.getService(UsageStatsManagerInternal.class));
        traceEnd();

        // Tracks whether the updatable WebView is in a ready state and watches for update installs.
        if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_WEBVIEW)) {
            traceBeginAndSlog("StartWebViewUpdateService");
            mWebViewUpdateService = mSystemServiceManager.startService(WebViewUpdateService.class);
            traceEnd();
        }

        // Tracks cpu time spent in binder calls
        traceBeginAndSlog("StartBinderCallsStatsService");
        BinderCallsStatsService.start();
        traceEnd();
    }

    
Starts a miscellaneous grab bag of stuff that has yet to be refactored
and organized.
/**
     * 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;
        IStorageManager storageManager = null;
        NetworkManagementService networkManagement = null;
        IpSecService ipSecService = null;
        NetworkStatsService networkStats = null;
        NetworkPolicyManagerService networkPolicy = null;
        ConnectivityService connectivity = 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 disableSystemTextClassifier = SystemProperties.getBoolean(
                "config.disable_systemtextclassifier", false);
        boolean disableCameraService = SystemProperties.getBoolean("config.disable_cameraservice",
                false);
        boolean disableSlices = SystemProperties.getBoolean("config.disable_slices", false);
        boolean enableLeftyService = SystemProperties.getBoolean("config.enable_lefty", false);

        boolean isEmulator = SystemProperties.get("ro.kernel.qemu").equals("1");

        boolean isWatch = context.getPackageManager().hasSystemFeature(
                PackageManager.FEATURE_WATCH);

        boolean enableVrService = context.getPackageManager().hasSystemFeature(
                PackageManager.FEATURE_VR_MODE_HIGH_PERFORMANCE);

        // For debugging RescueParty
        if (Build.IS_DEBUGGABLE && SystemProperties.getBoolean("debug.crash_system", false)) {
            throw new RuntimeException();
        }

        try {
            final String SECONDARY_ZYGOTE_PRELOAD = "SecondaryZygotePreload";
            // We start the preload ~1s before the webview factory preparation, to
            // ensure that it completes before the 32 bit relro process is forked
            // from the zygote. In the event that it takes too long, the webview
            // RELRO process will block, but it will do so without holding any locks.
            mZygotePreload = SystemServerInitThreadPool.get().submit(() -> {
                try {
                    Slog.i(TAG, SECONDARY_ZYGOTE_PRELOAD);
                    TimingsTraceLog traceLog = new TimingsTraceLog(
                            SYSTEM_SERVER_TIMING_ASYNC_TAG, Trace.TRACE_TAG_SYSTEM_SERVER);
                    traceLog.traceBegin(SECONDARY_ZYGOTE_PRELOAD);
                    if (!Process.zygoteProcess.preloadDefault(Build.SUPPORTED_32_BIT_ABIS[0])) {
                        Slog.e(TAG, "Unable to preload default resources");
                    }
                    traceLog.traceEnd();
                } catch (Exception ex) {
                    Slog.e(TAG, "Exception preloading default resources", ex);
                }
            }, SECONDARY_ZYGOTE_PRELOAD);

            traceBeginAndSlog("StartKeyAttestationApplicationIdProviderService");
            ServiceManager.addService("sec_key_att_app_id_provider",
                    new KeyAttestationApplicationIdProviderService(context));
            traceEnd();

            traceBeginAndSlog("StartKeyChainSystemService");
            mSystemServiceManager.startService(KeyChainSystemService.class);
            traceEnd();

            traceBeginAndSlog("StartSchedulingPolicyService");
            ServiceManager.addService("scheduling_policy", new SchedulingPolicyService());
            traceEnd();

            traceBeginAndSlog("StartTelecomLoaderService");
            mSystemServiceManager.startService(TelecomLoaderService.class);
            traceEnd();

            traceBeginAndSlog("StartTelephonyRegistry");
            telephonyRegistry = new TelephonyRegistry(context);
            ServiceManager.addService("telephony.registry", telephonyRegistry);
            traceEnd();

            traceBeginAndSlog("StartEntropyMixer");
            mEntropyMixer = new EntropyMixer(context);
            traceEnd();

            mContentResolver = context.getContentResolver();

            // The AccountManager must come before the ContentService
            traceBeginAndSlog("StartAccountManagerService");
            mSystemServiceManager.startService(ACCOUNT_SERVICE_CLASS);
            traceEnd();

            traceBeginAndSlog("StartContentService");
            mSystemServiceManager.startService(CONTENT_SERVICE_CLASS);
            traceEnd();

            traceBeginAndSlog("InstallSystemProviders");
            mActivityManagerService.installSystemProviders();
            // Now that SettingsProvider is ready, reactivate SQLiteCompatibilityWalFlags
            SQLiteCompatibilityWalFlags.reset();
            traceEnd();

            // Records errors and logs, for example wtf()
            // Currently this service indirectly depends on SettingsProvider so do this after
            // InstallSystemProviders.
            traceBeginAndSlog("StartDropBoxManager");
            mSystemServiceManager.startService(DropBoxManagerService.class);
            traceEnd();

            traceBeginAndSlog("StartVibratorService");
            vibrator = new VibratorService(context);
            ServiceManager.addService("vibrator", vibrator);
            traceEnd();

            if (!isWatch) {
                traceBeginAndSlog("StartConsumerIrService");
                consumerIr = new ConsumerIrService(context);
                ServiceManager.addService(Context.CONSUMER_IR_SERVICE, consumerIr);
                traceEnd();
            }

            traceBeginAndSlog("StartAlarmManagerService");
            mSystemServiceManager.startService(AlarmManagerService.class);
            traceEnd();

            traceBeginAndSlog("InitWatchdog");
            final Watchdog watchdog = Watchdog.getInstance();
            watchdog.init(context, mActivityManagerService);
            traceEnd();

            traceBeginAndSlog("StartInputManagerService");
            inputManager = new InputManagerService(context);
            traceEnd();

            traceBeginAndSlog("StartWindowManagerService");
            // WMS needs sensor service ready
            ConcurrentUtils.waitForFutureNoInterrupt(mSensorServiceStart, START_SENSOR_SERVICE);
            mSensorServiceStart = null;
            wm = WindowManagerService.main(context, inputManager,
                    mFactoryTestMode != FactoryTest.FACTORY_TEST_LOW_LEVEL,
                    !mFirstBoot, mOnlyCore, new PhoneWindowManager());
            ServiceManager.addService(Context.WINDOW_SERVICE, wm, /* allowIsolated= */ false,
                    DUMP_FLAG_PRIORITY_CRITICAL | DUMP_FLAG_PROTO);
            ServiceManager.addService(Context.INPUT_SERVICE, inputManager,
                    /* allowIsolated= */ false, DUMP_FLAG_PRIORITY_CRITICAL);
            traceEnd();

            traceBeginAndSlog("SetWindowManagerService");
            mActivityManagerService.setWindowManager(wm);
            traceEnd();

            traceBeginAndSlog("WindowManagerServiceOnInitReady");
            wm.onInitReady();
            traceEnd();

            // Start receiving calls from HIDL services. Start in in a separate thread
            // because it need to connect to SensorManager. This have to start
            // after START_SENSOR_SERVICE is done.
            SystemServerInitThreadPool.get().submit(() -> {
                TimingsTraceLog traceLog = new TimingsTraceLog(
                        SYSTEM_SERVER_TIMING_ASYNC_TAG, Trace.TRACE_TAG_SYSTEM_SERVER);
                traceLog.traceBegin(START_HIDL_SERVICES);
                startHidlServices();
                traceLog.traceEnd();
            }, START_HIDL_SERVICES);

            if (!isWatch && enableVrService) {
                traceBeginAndSlog("StartVrManagerService");
                mSystemServiceManager.startService(VrManagerService.class);
                traceEnd();
            }

            traceBeginAndSlog("StartInputManager");
            inputManager.setWindowManagerCallbacks(wm.getInputMonitor());
            inputManager.start();
            traceEnd();

            // TODO: Use service dependencies instead.
            traceBeginAndSlog("DisplayManagerWindowManagerAndInputReady");
            mDisplayManagerService.windowManagerAndInputReady();
            traceEnd();

            // 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 {
                traceBeginAndSlog("StartBluetoothService");
                mSystemServiceManager.startService(BluetoothService.class);
                traceEnd();
            }

            traceBeginAndSlog("IpConnectivityMetrics");
            mSystemServiceManager.startService(IpConnectivityMetrics.class);
            traceEnd();

            traceBeginAndSlog("NetworkWatchlistService");
            mSystemServiceManager.startService(NetworkWatchlistService.Lifecycle.class);
            traceEnd();

            traceBeginAndSlog("PinnerService");
            mSystemServiceManager.startService(PinnerService.class);
            traceEnd();
        } 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;
        MediaRouterService mediaRouter = null;

        // Bring up services needed for UI.
        if (mFactoryTestMode != FactoryTest.FACTORY_TEST_LOW_LEVEL) {
            traceBeginAndSlog("StartInputMethodManagerLifecycle");
            mSystemServiceManager.startService(InputMethodManagerService.Lifecycle.class);
            traceEnd();

            traceBeginAndSlog("StartAccessibilityManagerService");
            try {
                ServiceManager.addService(Context.ACCESSIBILITY_SERVICE,
                        new AccessibilityManagerService(context));
            } catch (Throwable e) {
                reportWtf("starting Accessibility Manager", e);
            }
            traceEnd();
        }

        traceBeginAndSlog("MakeDisplayReady");
        try {
            wm.displayReady();
        } catch (Throwable e) {
            reportWtf("making display ready", e);
        }
        traceEnd();

        if (mFactoryTestMode != FactoryTest.FACTORY_TEST_LOW_LEVEL) {
            if (!"0".equals(SystemProperties.get("system_init.startmountservice"))) {
                traceBeginAndSlog("StartStorageManagerService");
                try {
                    /*
                     * NotificationManagerService is dependant on StorageManagerService,
                     * (for media / usb notifications) so we must start StorageManagerService first.
                     */
                    mSystemServiceManager.startService(STORAGE_MANAGER_SERVICE_CLASS);
                    storageManager = IStorageManager.Stub.asInterface(
                            ServiceManager.getService("mount"));
                } catch (Throwable e) {
                    reportWtf("starting StorageManagerService", e);
                }
                traceEnd();

                traceBeginAndSlog("StartStorageStatsService");
                try {
                    mSystemServiceManager.startService(STORAGE_STATS_SERVICE_CLASS);
                } catch (Throwable e) {
                    reportWtf("starting StorageStatsService", e);
                }
                traceEnd();
            }
        }

        // We start this here so that we update our configuration to set watch or television
        // as appropriate.
        traceBeginAndSlog("StartUiModeManager");
        mSystemServiceManager.startService(UiModeManagerService.class);
        traceEnd();

        if (!mOnlyCore) {
            traceBeginAndSlog("UpdatePackagesIfNeeded");
            try {
                mPackageManagerService.updatePackagesIfNeeded();
            } catch (Throwable e) {
                reportWtf("update packages", e);
            }
            traceEnd();
        }

        traceBeginAndSlog("PerformFstrimIfNeeded");
        try {
            mPackageManagerService.performFstrimIfNeeded();
        } catch (Throwable e) {
            reportWtf("performing fstrim", e);
        }
        traceEnd();

        if (mFactoryTestMode != FactoryTest.FACTORY_TEST_LOW_LEVEL) {
            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);
            }
            traceEnd();

            final boolean hasPdb = !SystemProperties.get(PERSISTENT_DATA_BLOCK_PROP).equals("");
            if (hasPdb) {
                traceBeginAndSlog("StartPersistentDataBlock");
                mSystemServiceManager.startService(PersistentDataBlockService.class);
                traceEnd();
            }

            if (hasPdb || OemLockService.isHalPresent()) {
                // Implementation depends on pdb or the OemLock HAL
                traceBeginAndSlog("StartOemLockService");
                mSystemServiceManager.startService(OemLockService.class);
                traceEnd();
            }

            traceBeginAndSlog("StartDeviceIdleController");
            mSystemServiceManager.startService(DeviceIdleController.class);
            traceEnd();

            // Always start the Device Policy Manager, so that the API is compatible with
            // API8.
            traceBeginAndSlog("StartDevicePolicyManager");
            mSystemServiceManager.startService(DevicePolicyManagerService.Lifecycle.class);
            traceEnd();

            if (!isWatch) {
                traceBeginAndSlog("StartStatusBarManagerService");
                try {
                    statusBar = new StatusBarManagerService(context, wm);
                    ServiceManager.addService(Context.STATUS_BAR_SERVICE, statusBar);
                } catch (Throwable e) {
                    reportWtf("starting StatusBarManagerService", e);
                }
                traceEnd();
            }

            traceBeginAndSlog("StartClipboardService");
            mSystemServiceManager.startService(ClipboardService.class);
            traceEnd();

            traceBeginAndSlog("StartNetworkManagementService");
            try {
                networkManagement = NetworkManagementService.create(context);
                ServiceManager.addService(Context.NETWORKMANAGEMENT_SERVICE, networkManagement);
            } catch (Throwable e) {
                reportWtf("starting NetworkManagement Service", e);
            }
            traceEnd();

            traceBeginAndSlog("StartIpSecService");
            try {
                ipSecService = IpSecService.create(context);
                ServiceManager.addService(Context.IPSEC_SERVICE, ipSecService);
            } catch (Throwable e) {
                reportWtf("starting IpSec Service", e);
            }
            traceEnd();

            traceBeginAndSlog("StartTextServicesManager");
            mSystemServiceManager.startService(TextServicesManagerService.Lifecycle.class);
            traceEnd();

            if (!disableSystemTextClassifier) {
                traceBeginAndSlog("StartTextClassificationManagerService");
                mSystemServiceManager.startService(TextClassificationManagerService.Lifecycle.class);
                traceEnd();
            }

            traceBeginAndSlog("StartNetworkScoreService");
            mSystemServiceManager.startService(NetworkScoreService.Lifecycle.class);
            traceEnd();

            traceBeginAndSlog("StartNetworkStatsService");
            try {
                networkStats = NetworkStatsService.create(context, networkManagement);
                ServiceManager.addService(Context.NETWORK_STATS_SERVICE, networkStats);
            } catch (Throwable e) {
                reportWtf("starting NetworkStats Service", e);
            }
            traceEnd();

            traceBeginAndSlog("StartNetworkPolicyManagerService");
            try {
                networkPolicy = new NetworkPolicyManagerService(context, mActivityManagerService,
                        networkManagement);
                ServiceManager.addService(Context.NETWORK_POLICY_SERVICE, networkPolicy);
            } catch (Throwable e) {
                reportWtf("starting NetworkPolicy Service", e);
            }
            traceEnd();

            if (!mOnlyCore) {
                if (context.getPackageManager().hasSystemFeature(
                            PackageManager.FEATURE_WIFI)) {
                    // Wifi Service must be started first for wifi-related services.
                    traceBeginAndSlog("StartWifi");
                    mSystemServiceManager.startService(WIFI_SERVICE_CLASS);
                    traceEnd();
                    traceBeginAndSlog("StartWifiScanning");
                    mSystemServiceManager.startService(
                        "com.android.server.wifi.scanner.WifiScanningService");
                    traceEnd();
                }

                if (context.getPackageManager().hasSystemFeature(
                    PackageManager.FEATURE_WIFI_RTT)) {
                    traceBeginAndSlog("StartRttService");
                    mSystemServiceManager.startService(
                        "com.android.server.wifi.rtt.RttService");
                    traceEnd();
                }

                if (context.getPackageManager().hasSystemFeature(
                    PackageManager.FEATURE_WIFI_AWARE)) {
                    traceBeginAndSlog("StartWifiAware");
                    mSystemServiceManager.startService(WIFI_AWARE_SERVICE_CLASS);
                    traceEnd();
                }

                if (context.getPackageManager().hasSystemFeature(
                    PackageManager.FEATURE_WIFI_DIRECT)) {
                    traceBeginAndSlog("StartWifiP2P");
                    mSystemServiceManager.startService(WIFI_P2P_SERVICE_CLASS);
                    traceEnd();
                }

                if (context.getPackageManager().hasSystemFeature(
                    PackageManager.FEATURE_LOWPAN)) {
                    traceBeginAndSlog("StartLowpan");
                    mSystemServiceManager.startService(LOWPAN_SERVICE_CLASS);
                    traceEnd();
                }
            }

            if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_ETHERNET) ||
                mPackageManager.hasSystemFeature(PackageManager.FEATURE_USB_HOST)) {
                traceBeginAndSlog("StartEthernet");
                mSystemServiceManager.startService(ETHERNET_SERVICE_CLASS);
                traceEnd();
            }

            traceBeginAndSlog("StartConnectivityService");
            try {
                connectivity = new ConnectivityService(
                    context, networkManagement, networkStats, networkPolicy);
                ServiceManager.addService(Context.CONNECTIVITY_SERVICE, connectivity,
                            /* allowIsolated= */ false,
                    DUMP_FLAG_PRIORITY_HIGH | DUMP_FLAG_PRIORITY_NORMAL);
                networkStats.bindConnectivityManager(connectivity);
                networkPolicy.bindConnectivityManager(connectivity);
            } catch (Throwable e) {
                reportWtf("starting Connectivity Service", e);
            }
            traceEnd();

            traceBeginAndSlog("StartNsdService");
            try {
                serviceDiscovery = NsdService.create(context);
                ServiceManager.addService(
                    Context.NSD_SERVICE, serviceDiscovery);
            } catch (Throwable e) {
                reportWtf("starting Service Discovery Service", e);
            }
            traceEnd();

            traceBeginAndSlog("StartSystemUpdateManagerService");
            try {
                ServiceManager.addService(Context.SYSTEM_UPDATE_SERVICE,
                        new SystemUpdateManagerService(context));
            } catch (Throwable e) {
                reportWtf("starting SystemUpdateManagerService", e);
            }
            traceEnd();

            traceBeginAndSlog("StartUpdateLockService");
            try {
                ServiceManager.addService(Context.UPDATE_LOCK_SERVICE,
                    new UpdateLockService(context));
            } catch (Throwable e) {
                reportWtf("starting UpdateLockService", e);
            }
            traceEnd();

            traceBeginAndSlog("StartNotificationManager");
            mSystemServiceManager.startService(NotificationManagerService.class);
            SystemNotificationChannels.createAll(context);
            notification = INotificationManager.Stub.asInterface(
                    ServiceManager.getService(Context.NOTIFICATION_SERVICE));
            traceEnd();

            traceBeginAndSlog("StartDeviceMonitor");
            mSystemServiceManager.startService(DeviceStorageMonitorService.class);
            traceEnd();

            traceBeginAndSlog("StartLocationManagerService");
            try {
                location = new LocationManagerService(context);
                ServiceManager.addService(Context.LOCATION_SERVICE, location);
            } catch (Throwable e) {
                reportWtf("starting Location Manager", e);
            }
            traceEnd();

            traceBeginAndSlog("StartCountryDetectorService");
            try {
                countryDetector = new CountryDetectorService(context);
                ServiceManager.addService(Context.COUNTRY_DETECTOR, countryDetector);
            } catch (Throwable e) {
                reportWtf("starting Country Detector", e);
            }
            traceEnd();

            if (!isWatch) {
                traceBeginAndSlog("StartSearchManagerService");
                try {
                    mSystemServiceManager.startService(SEARCH_MANAGER_SERVICE_CLASS);
                } catch (Throwable e) {
                    reportWtf("starting Search Service", e);
                }
                traceEnd();
            }

            if (context.getResources().getBoolean(R.bool.config_enableWallpaperService)) {
                traceBeginAndSlog("StartWallpaperManagerService");
                mSystemServiceManager.startService(WALLPAPER_SERVICE_CLASS);
                traceEnd();
            }

            traceBeginAndSlog("StartAudioService");
            mSystemServiceManager.startService(AudioService.Lifecycle.class);
            traceEnd();

            if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_BROADCAST_RADIO)) {
                traceBeginAndSlog("StartBroadcastRadioService");
                mSystemServiceManager.startService(BroadcastRadioService.class);
                traceEnd();
            }

            traceBeginAndSlog("StartDockObserver");
            mSystemServiceManager.startService(DockObserver.class);
            traceEnd();

            if (isWatch) {
                traceBeginAndSlog("StartThermalObserver");
                mSystemServiceManager.startService(THERMAL_OBSERVER_CLASS);
                traceEnd();
            }

            traceBeginAndSlog("StartWiredAccessoryManager");
            try {
                // Listen for wired headset changes
                inputManager.setWiredAccessoryCallbacks(
                        new WiredAccessoryManager(context, inputManager));
            } catch (Throwable e) {
                reportWtf("starting WiredAccessoryManager", e);
            }
            traceEnd();

            if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_MIDI)) {
                // Start MIDI Manager service
                traceBeginAndSlog("StartMidiManager");
                mSystemServiceManager.startService(MIDI_SERVICE_CLASS);
                traceEnd();
            }

            if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_USB_HOST)
                || mPackageManager.hasSystemFeature(
                PackageManager.FEATURE_USB_ACCESSORY)
                || isEmulator) {
                // Manage USB host and device support
                traceBeginAndSlog("StartUsbService");
                mSystemServiceManager.startService(USB_SERVICE_CLASS);
                traceEnd();
            }

            if (!isWatch) {
                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);
                }
                traceEnd();
            }

            traceBeginAndSlog("StartHardwarePropertiesManagerService");
            try {
                hardwarePropertiesService = new HardwarePropertiesManagerService(context);
                ServiceManager.addService(Context.HARDWARE_PROPERTIES_SERVICE,
                    hardwarePropertiesService);
            } catch (Throwable e) {
                Slog.e(TAG, "Failure starting HardwarePropertiesManagerService", e);
            }
            traceEnd();

            traceBeginAndSlog("StartTwilightService");
            mSystemServiceManager.startService(TwilightService.class);
            traceEnd();

            if (ColorDisplayController.isAvailable(context)) {
                traceBeginAndSlog("StartNightDisplay");
                mSystemServiceManager.startService(ColorDisplayService.class);
                traceEnd();
            }

            traceBeginAndSlog("StartJobScheduler");
            mSystemServiceManager.startService(JobSchedulerService.class);
            traceEnd();

            traceBeginAndSlog("StartSoundTrigger");
            mSystemServiceManager.startService(SoundTriggerService.class);
            traceEnd();

            traceBeginAndSlog("StartTrustManager");
            mSystemServiceManager.startService(TrustManagerService.class);
            traceEnd();

            if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_BACKUP)) {
                traceBeginAndSlog("StartBackupManager");
                mSystemServiceManager.startService(BACKUP_MANAGER_SERVICE_CLASS);
                traceEnd();
            }

            if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_APP_WIDGETS)
                || context.getResources().getBoolean(R.bool.config_enableAppWidgetService)) {
                traceBeginAndSlog("StartAppWidgerService");
                mSystemServiceManager.startService(APPWIDGET_SERVICE_CLASS);
                traceEnd();
            }

            // We need to always start this service, regardless of whether the
            // FEATURE_VOICE_RECOGNIZERS feature is set, because it needs to take care
            // of initializing various settings.  It will internally modify its behavior
            // based on that feature.
            traceBeginAndSlog("StartVoiceRecognitionManager");
            mSystemServiceManager.startService(VOICE_RECOGNITION_MANAGER_SERVICE_CLASS);
            traceEnd();

            if (GestureLauncherService.isGestureLauncherEnabled(context.getResources())) {
                traceBeginAndSlog("StartGestureLauncher");
                mSystemServiceManager.startService(GestureLauncherService.class);
                traceEnd();
            }
            traceBeginAndSlog("StartSensorNotification");
            mSystemServiceManager.startService(SensorNotificationService.class);
            traceEnd();

            traceBeginAndSlog("StartContextHubSystemService");
            mSystemServiceManager.startService(ContextHubSystemService.class);
            traceEnd();

            traceBeginAndSlog("StartDiskStatsService");
            try {
                ServiceManager.addService("diskstats", new DiskStatsService(context));
            } catch (Throwable e) {
                reportWtf("starting DiskStats Service", e);
            }
            traceEnd();

            // timezone.RulesManagerService will prevent a device starting up if the chain of trust
            // required for safe time zone updates might be broken. RuleManagerService cannot do
            // this check when mOnlyCore == true, so we don't enable the service in this case.
            // This service requires that JobSchedulerService is already started when it starts.
            final boolean startRulesManagerService =
                    !mOnlyCore && context.getResources().getBoolean(
                            R.bool.config_enableUpdateableTimeZoneRules);
            if (startRulesManagerService) {
                traceBeginAndSlog("StartTimeZoneRulesManagerService");
                mSystemServiceManager.startService(TIME_ZONE_RULES_MANAGER_SERVICE_CLASS);
                traceEnd();
            }

            if (!isWatch) {
                traceBeginAndSlog("StartNetworkTimeUpdateService");
                try {
                    networkTimeUpdater = new NetworkTimeUpdateService(context);
                    ServiceManager.addService("network_time_update_service", networkTimeUpdater);
                } catch (Throwable e) {
                    reportWtf("starting NetworkTimeUpdate service", e);
                }
                traceEnd();
            }

            traceBeginAndSlog("StartCommonTimeManagementService");
            try {
                commonTimeMgmtService = new CommonTimeManagementService(context);
                ServiceManager.addService("commontime_management", commonTimeMgmtService);
            } catch (Throwable e) {
                reportWtf("starting CommonTimeManagementService service", e);
            }
            traceEnd();

            traceBeginAndSlog("CertBlacklister");
            try {
                CertBlacklister blacklister = new CertBlacklister(context);
            } catch (Throwable e) {
                reportWtf("starting CertBlacklister", e);
            }
            traceEnd();

            if (EmergencyAffordanceManager.ENABLED) {
                // EmergencyMode service
                traceBeginAndSlog("StartEmergencyAffordanceService");
                mSystemServiceManager.startService(EmergencyAffordanceService.class);
                traceEnd();
            }

            // Dreams (interactive idle-time views, a/k/a screen savers, and doze mode)
            traceBeginAndSlog("StartDreamManager");
            mSystemServiceManager.startService(DreamManagerService.class);
            traceEnd();

            traceBeginAndSlog("AddGraphicsStatsService");
            ServiceManager.addService(GraphicsStatsService.GRAPHICS_STATS_SERVICE,
                new GraphicsStatsService(context));
            traceEnd();

            if (CoverageService.ENABLED) {
                traceBeginAndSlog("AddCoverageService");
                ServiceManager.addService(CoverageService.COVERAGE_SERVICE, new CoverageService());
                traceEnd();
            }

            if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_PRINTING)) {
                traceBeginAndSlog("StartPrintManager");
                mSystemServiceManager.startService(PRINT_MANAGER_SERVICE_CLASS);
                traceEnd();
            }

            if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_COMPANION_DEVICE_SETUP)) {
                traceBeginAndSlog("StartCompanionDeviceManager");
                mSystemServiceManager.startService(COMPANION_DEVICE_MANAGER_SERVICE_CLASS);
                traceEnd();
            }

            traceBeginAndSlog("StartRestrictionManager");
            mSystemServiceManager.startService(RestrictionsManagerService.class);
            traceEnd();

            traceBeginAndSlog("StartMediaSessionService");
            mSystemServiceManager.startService(MediaSessionService.class);
            traceEnd();

            traceBeginAndSlog("StartMediaUpdateService");
            mSystemServiceManager.startService(MediaUpdateService.class);
            traceEnd();

            if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_HDMI_CEC)) {
                traceBeginAndSlog("StartHdmiControlService");
                mSystemServiceManager.startService(HdmiControlService.class);
                traceEnd();
            }

            if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_LIVE_TV)
                    || mPackageManager.hasSystemFeature(PackageManager.FEATURE_LEANBACK)) {
                traceBeginAndSlog("StartTvInputManager");
                mSystemServiceManager.startService(TvInputManagerService.class);
                traceEnd();
            }

            if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_PICTURE_IN_PICTURE)) {
                traceBeginAndSlog("StartMediaResourceMonitor");
                mSystemServiceManager.startService(MediaResourceMonitorService.class);
                traceEnd();
            }

            if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_LEANBACK)) {
                traceBeginAndSlog("StartTvRemoteService");
                mSystemServiceManager.startService(TvRemoteService.class);
                traceEnd();
            }

            traceBeginAndSlog("StartMediaRouterService");
            try {
                mediaRouter = new MediaRouterService(context);
                ServiceManager.addService(Context.MEDIA_ROUTER_SERVICE, mediaRouter);
            } catch (Throwable e) {
                reportWtf("starting MediaRouterService", e);
            }
            traceEnd();

            if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_FINGERPRINT)) {
                traceBeginAndSlog("StartFingerprintSensor");
                mSystemServiceManager.startService(FingerprintService.class);
                traceEnd();
            }

            traceBeginAndSlog("StartBackgroundDexOptService");
            try {
                BackgroundDexOptService.schedule(context);
            } catch (Throwable e) {
                reportWtf("starting StartBackgroundDexOptService", e);
            }
            traceEnd();

            traceBeginAndSlog("StartPruneInstantAppsJobService");
            try {
                PruneInstantAppsJobService.schedule(context);
            } catch (Throwable e) {
                reportWtf("StartPruneInstantAppsJobService", e);
            }
            traceEnd();

            // LauncherAppsService uses ShortcutService.
            traceBeginAndSlog("StartShortcutServiceLifecycle");
            mSystemServiceManager.startService(ShortcutService.Lifecycle.class);
            traceEnd();

            traceBeginAndSlog("StartLauncherAppsService");
            mSystemServiceManager.startService(LauncherAppsService.class);
            traceEnd();

            traceBeginAndSlog("StartCrossProfileAppsService");
            mSystemServiceManager.startService(CrossProfileAppsService.class);
            traceEnd();
        }

        if (!isWatch) {
            traceBeginAndSlog("StartMediaProjectionManager");
            mSystemServiceManager.startService(MediaProjectionManagerService.class);
            traceEnd();
        }

        if (isWatch) {
            traceBeginAndSlog("StartWearConfigService");
            mSystemServiceManager.startService(WEAR_CONFIG_SERVICE_CLASS);
            traceEnd();

            traceBeginAndSlog("StartWearConnectivityService");
            mSystemServiceManager.startService(WEAR_CONNECTIVITY_SERVICE_CLASS);
            traceEnd();

            traceBeginAndSlog("StartWearTimeService");
            mSystemServiceManager.startService(WEAR_DISPLAY_SERVICE_CLASS);
            mSystemServiceManager.startService(WEAR_TIME_SERVICE_CLASS);
            traceEnd();

            if (enableLeftyService) {
                traceBeginAndSlog("StartWearLeftyService");
                mSystemServiceManager.startService(WEAR_LEFTY_SERVICE_CLASS);
                traceEnd();
            }

            traceBeginAndSlog("StartWearGlobalActionsService");
            mSystemServiceManager.startService(WEAR_GLOBAL_ACTIONS_SERVICE_CLASS);
            traceEnd();
        }

        if (!disableSlices) {
            traceBeginAndSlog("StartSliceManagerService");
            mSystemServiceManager.startService(SLICE_MANAGER_SERVICE_CLASS);
            traceEnd();
        }

        if (!disableCameraService) {
            traceBeginAndSlog("StartCameraServiceProxy");
            mSystemServiceManager.startService(CameraServiceProxy.class);
            traceEnd();
        }

        if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_EMBEDDED)) {
            traceBeginAndSlog("StartIoTSystemService");
            mSystemServiceManager.startService(IOT_SERVICE_CLASS);
            traceEnd();
        }

        // Statsd helper
        traceBeginAndSlog("StartStatsCompanionService");
        mSystemServiceManager.startService(StatsCompanionService.Lifecycle.class);
        traceEnd();

        // Before things start rolling, be sure we have decided whether
        // we are in safe mode.
        final boolean safeMode = wm.detectSafeMode();
        if (safeMode) {
            traceBeginAndSlog("EnterSafeModeAndDisableJitCompilation");
            mActivityManagerService.enterSafeMode();
            // Disable the JIT for the system_server process
            VMRuntime.getRuntime().disableJitCompilation();
            traceEnd();
        } else {
            // Enable the JIT for the system_server process
            traceBeginAndSlog("StartJitCompilation");
            VMRuntime.getRuntime().startJitCompilation();
            traceEnd();
        }

        // MMS service broker
        traceBeginAndSlog("StartMmsService");
        mmsService = mSystemServiceManager.startService(MmsServiceBroker.class);
        traceEnd();

        if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_AUTOFILL)) {
            traceBeginAndSlog("StartAutoFillService");
            mSystemServiceManager.startService(AUTO_FILL_MANAGER_SERVICE_CLASS);
            traceEnd();
        }

        // It is now time to start up the app processes...

        traceBeginAndSlog("MakeVibratorServiceReady");
        try {
            vibrator.systemReady();
        } catch (Throwable e) {
            reportWtf("making Vibrator Service ready", e);
        }
        traceEnd();

        traceBeginAndSlog("MakeLockSettingsServiceReady");
        if (lockSettings != null) {
            try {
                lockSettings.systemReady();
            } catch (Throwable e) {
                reportWtf("making Lock Settings Service ready", e);
            }
        }
        traceEnd();

        // Needed by DevicePolicyManager for initialization
        traceBeginAndSlog("StartBootPhaseLockSettingsReady");
        mSystemServiceManager.startBootPhase(SystemService.PHASE_LOCK_SETTINGS_READY);
        traceEnd();

        traceBeginAndSlog("StartBootPhaseSystemServicesReady");
        mSystemServiceManager.startBootPhase(SystemService.PHASE_SYSTEM_SERVICES_READY);
        traceEnd();

        traceBeginAndSlog("MakeWindowManagerServiceReady");
        try {
            wm.systemReady();
        } catch (Throwable e) {
            reportWtf("making Window Manager Service ready", e);
        }
        traceEnd();

        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.
        final Configuration config = wm.computeNewConfiguration(DEFAULT_DISPLAY);
        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();
        }

        traceBeginAndSlog("MakePowerManagerServiceReady");
        try {
            // TODO: use boot phase
            mPowerManagerService.systemReady(mActivityManagerService.getAppOpsService());
        } catch (Throwable e) {
            reportWtf("making Power Manager Service ready", e);
        }
        traceEnd();

        traceBeginAndSlog("MakePackageManagerServiceReady");
        mPackageManagerService.systemReady();
        traceEnd();

        traceBeginAndSlog("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);
        }
        traceEnd();

        mSystemServiceManager.setSafeMode(safeMode);

        // Start device specific services
        traceBeginAndSlog("StartDeviceSpecificServices");
        final String[] classes = mSystemContext.getResources().getStringArray(
                R.array.config_deviceSpecificSystemServices);
        for (final String className : classes) {
            traceBeginAndSlog("StartDeviceSpecificServices " + className);
            try {
                mSystemServiceManager.startService(className);
            } catch (Throwable e) {
                reportWtf("starting " + className, e);
            }
            traceEnd();
        }
        traceEnd();

        traceBeginAndSlog("StartBootPhaseDeviceSpecificServicesReady");
        mSystemServiceManager.startBootPhase(SystemService.PHASE_DEVICE_SPECIFIC_SERVICES_READY);
        traceEnd();

        // 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 LocationManagerService locationF = location;
        final CountryDetectorService countryDetectorF = countryDetector;
        final NetworkTimeUpdateService networkTimeUpdaterF = networkTimeUpdater;
        final CommonTimeManagementService commonTimeMgmtServiceF = commonTimeMgmtService;
        final InputManagerService inputManagerF = inputManager;
        final TelephonyRegistry telephonyRegistryF = telephonyRegistry;
        final MediaRouterService mediaRouterF = mediaRouter;
        final MmsServiceBroker mmsServiceF = mmsService;
        final IpSecService ipSecServiceF = ipSecService;
        final WindowManagerService windowManagerF = wm;

        // 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(() -> {
            Slog.i(TAG, "Making services ready");
            traceBeginAndSlog("StartActivityManagerReadyPhase");
            mSystemServiceManager.startBootPhase(
                    SystemService.PHASE_ACTIVITY_MANAGER_READY);
            traceEnd();
            traceBeginAndSlog("StartObservingNativeCrashes");
            try {
                mActivityManagerService.startObservingNativeCrashes();
            } catch (Throwable e) {
                reportWtf("observing native crashes", e);
            }
            traceEnd();

            // No dependency on Webview preparation in system server. But this should
            // be completed before allowing 3rd party
            final String WEBVIEW_PREPARATION = "WebViewFactoryPreparation";
            Future<?> webviewPrep = null;
            if (!mOnlyCore && mWebViewUpdateService != null) {
                webviewPrep = SystemServerInitThreadPool.get().submit(() -> {
                    Slog.i(TAG, WEBVIEW_PREPARATION);
                    TimingsTraceLog traceLog = new TimingsTraceLog(
                            SYSTEM_SERVER_TIMING_ASYNC_TAG, Trace.TRACE_TAG_SYSTEM_SERVER);
                    traceLog.traceBegin(WEBVIEW_PREPARATION);
                    ConcurrentUtils.waitForFutureNoInterrupt(mZygotePreload, "Zygote preload");
                    mZygotePreload = null;
                    mWebViewUpdateService.prepareWebViewInSystemServer();
                    traceLog.traceEnd();
                }, WEBVIEW_PREPARATION);
            }

            if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_AUTOMOTIVE)) {
                traceBeginAndSlog("StartCarServiceHelperService");
                mSystemServiceManager.startService(CAR_SERVICE_HELPER_SERVICE_CLASS);
                traceEnd();
            }

            traceBeginAndSlog("StartSystemUI");
            try {
                startSystemUi(context, windowManagerF);
            } catch (Throwable e) {
                reportWtf("starting System UI", e);
            }
            traceEnd();
            traceBeginAndSlog("MakeNetworkManagementServiceReady");
            try {
                if (networkManagementF != null) networkManagementF.systemReady();
            } catch (Throwable e) {
                reportWtf("making Network Managment Service ready", e);
            }
            CountDownLatch networkPolicyInitReadySignal = null;
            if (networkPolicyF != null) {
                networkPolicyInitReadySignal = networkPolicyF
                        .networkScoreAndNetworkManagementServiceReady();
            }
            traceEnd();
            traceBeginAndSlog("MakeIpSecServiceReady");
            try {
                if (ipSecServiceF != null) ipSecServiceF.systemReady();
            } catch (Throwable e) {
                reportWtf("making IpSec Service ready", e);
            }
            traceEnd();
            traceBeginAndSlog("MakeNetworkStatsServiceReady");
            try {
                if (networkStatsF != null) networkStatsF.systemReady();
            } catch (Throwable e) {
                reportWtf("making Network Stats Service ready", e);
            }
            traceEnd();
            traceBeginAndSlog("MakeConnectivityServiceReady");
            try {
                if (connectivityF != null) connectivityF.systemReady();
            } catch (Throwable e) {
                reportWtf("making Connectivity Service ready", e);
            }
            traceEnd();
            traceBeginAndSlog("MakeNetworkPolicyServiceReady");
            try {
                if (networkPolicyF != null) {
                    networkPolicyF.systemReady(networkPolicyInitReadySignal);
                }
            } catch (Throwable e) {
                reportWtf("making Network Policy Service ready", e);
            }
            traceEnd();

            traceBeginAndSlog("StartWatchdog");
            Watchdog.getInstance().start();
            traceEnd();

            // Wait for all packages to be prepared
            mPackageManagerService.waitForAppDataPrepared();

            // It is now okay to let the various system services start their
            // third party code...
            traceBeginAndSlog("PhaseThirdPartyAppsCanStart");
            // confirm webview completion before starting 3rd party
            if (webviewPrep != null) {
                ConcurrentUtils.waitForFutureNoInterrupt(webviewPrep, WEBVIEW_PREPARATION);
            }
            mSystemServiceManager.startBootPhase(
                    SystemService.PHASE_THIRD_PARTY_APPS_CAN_START);
            traceEnd();

            traceBeginAndSlog("MakeLocationServiceReady");
            try {
                if (locationF != null) locationF.systemRunning();
            } catch (Throwable e) {
                reportWtf("Notifying Location Service running", e);
            }
            traceEnd();
            traceBeginAndSlog("MakeCountryDetectionServiceReady");
            try {
                if (countryDetectorF != null) countryDetectorF.systemRunning();
            } catch (Throwable e) {
                reportWtf("Notifying CountryDetectorService running", e);
            }
            traceEnd();
            traceBeginAndSlog("MakeNetworkTimeUpdateReady");
            try {
                if (networkTimeUpdaterF != null) networkTimeUpdaterF.systemRunning();
            } catch (Throwable e) {
                reportWtf("Notifying NetworkTimeService running", e);
            }
            traceEnd();
            traceBeginAndSlog("MakeCommonTimeManagementServiceReady");
            try {
                if (commonTimeMgmtServiceF != null) {
                    commonTimeMgmtServiceF.systemRunning();
                }
            } catch (Throwable e) {
                reportWtf("Notifying CommonTimeManagementService running", e);
            }
            traceEnd();
            traceBeginAndSlog("MakeInputManagerServiceReady");
            try {
                // TODO(BT) Pass parameter to input manager
                if (inputManagerF != null) inputManagerF.systemRunning();
            } catch (Throwable e) {
                reportWtf("Notifying InputManagerService running", e);
            }
            traceEnd();
            traceBeginAndSlog("MakeTelephonyRegistryReady");
            try {
                if (telephonyRegistryF != null) telephonyRegistryF.systemRunning();
            } catch (Throwable e) {
                reportWtf("Notifying TelephonyRegistry running", e);
            }
            traceEnd();
            traceBeginAndSlog("MakeMediaRouterServiceReady");
            try {
                if (mediaRouterF != null) mediaRouterF.systemRunning();
            } catch (Throwable e) {
                reportWtf("Notifying MediaRouterService running", e);
            }
            traceEnd();
            traceBeginAndSlog("MakeMmsServiceReady");
            try {
                if (mmsServiceF != null) mmsServiceF.systemRunning();
            } catch (Throwable e) {
                reportWtf("Notifying MmsService running", e);
            }
            traceEnd();

            traceBeginAndSlog("IncidentDaemonReady");
            try {
                // TODO: Switch from checkService to getService once it's always
                // in the build and should reliably be there.
                final IIncidentManager incident = IIncidentManager.Stub.asInterface(
                        ServiceManager.getService(Context.INCIDENT_SERVICE));
                if (incident != null) incident.systemRunning();
            } catch (Throwable e) {
                reportWtf("Notifying incident daemon running", e);
            }
            traceEnd();
        }, BOOT_TIMINGS_TRACE_LOG);
    }

    static final void startSystemUi(Context context, WindowManagerService windowManager) {
        Intent intent = new Intent();
        intent.setComponent(new ComponentName("com.android.systemui",
                    "com.android.systemui.SystemUIService"));
        intent.addFlags(Intent.FLAG_DEBUG_TRIAGED_MISSING);
        //Slog.d(TAG, "Starting service: " + intent);
        context.startServiceAsUser(intent, UserHandle.SYSTEM);
        windowManager.onSystemUiStarted();
    }

    private static void traceBeginAndSlog(String name) {
        Slog.i(TAG, name);
        BOOT_TIMINGS_TRACE_LOG.traceBegin(name);
    }

    private static void traceEnd() {
        BOOT_TIMINGS_TRACE_LOG.traceEnd();
    }
}