Wrap some services into a SystemService

These services can now be excluded by modifying the list of REQUIRED_SERVICES (TB renamed)

Changed appwidget, devicepolicy, backup and print services.

Change-Id: Id8e2855d5c045cd57bdb02dca9ed75172803bce7

7 files changed, 905 insertions, 781 deletions

diff --git a/services/Android.mk b/services/Android.mk
index 6ee7fca..8bd7629 100644
--- a/services/Android.mk
+++ b/services/Android.mk
@@ -7,7 +7,7 @@ include $(CLEAR_VARS)
 LOCAL_SRC_FILES :=
 
 # TODO: Move this to the product makefiles
-REQUIRED_SERVICES := core appwidget backup devicepolicy accessibility print
+REQUIRED_SERVICES := core accessibility appwidget backup devicepolicy print
 
 include $(patsubst %,$(LOCAL_PATH)/%/java/service.mk,$(REQUIRED_SERVICES))
 
diff --git a/services/appwidget/java/com/android/server/appwidget/AppWidgetService.java b/services/appwidget/java/com/android/server/appwidget/AppWidgetService.java
index 6fd8871..3378e3d 100644
--- a/services/appwidget/java/com/android/server/appwidget/AppWidgetService.java
+++ b/services/appwidget/java/com/android/server/appwidget/AppWidgetService.java
@@ -38,6 +38,7 @@ import com.android.internal.appwidget.IAppWidgetHost;
 import com.android.internal.appwidget.IAppWidgetService;
 import com.android.internal.os.BackgroundThread;
 import com.android.internal.util.IndentingPrintWriter;
+import com.android.server.SystemService;
 
 import java.io.FileDescriptor;
 import java.io.PrintWriter;
@@ -46,21 +47,19 @@ import java.util.Locale;
 
 
 /**
- * Redirects calls to this service to the instance of the service for the appropriate user.
+ * SystemService that publishes an IAppWidgetService.
  */
-public class AppWidgetService extends IAppWidgetService.Stub
-{
-    private static final String TAG = "AppWidgetService";
+public class AppWidgetService extends SystemService {
+
+    static final String TAG = "AppWidgetService";
 
     Context mContext;
-    Locale mLocale;
-    PackageManager mPackageManager;
-    boolean mSafeMode;
-    private final Handler mSaveStateHandler;
+    Handler mSaveStateHandler;
 
-    private final SparseArray<AppWidgetServiceImpl> mAppWidgetServices;
+    SparseArray<AppWidgetServiceImpl> mAppWidgetServices;
 
-    public AppWidgetService(Context context) {
+    @Override
+    public void onCreate(Context context) {
         mContext = context;
 
         mSaveStateHandler = BackgroundThread.getHandler();
@@ -70,294 +69,316 @@ public class AppWidgetService extends IAppWidgetService.Stub
         mAppWidgetServices.append(0, primary);
     }
 
-    public void systemRunning(boolean safeMode) {
-        mSafeMode = safeMode;
-
-        mAppWidgetServices.get(0).systemReady(safeMode);
-
-        // Register for the boot completed broadcast, so we can send the
-        // ENABLE broacasts. If we try to send them now, they time out,
-        // because the system isn't ready to handle them yet.
-        mContext.registerReceiverAsUser(mBroadcastReceiver, UserHandle.ALL,
-                new IntentFilter(Intent.ACTION_BOOT_COMPLETED), null, null);
-
-        // Register for configuration changes so we can update the names
-        // of the widgets when the locale changes.
-        mContext.registerReceiverAsUser(mBroadcastReceiver, UserHandle.ALL,
-                new IntentFilter(Intent.ACTION_CONFIGURATION_CHANGED), null, null);
-
-        // Register for broadcasts about package install, etc., so we can
-        // update the provider list.
-        IntentFilter filter = new IntentFilter();
-        filter.addAction(Intent.ACTION_PACKAGE_ADDED);
-        filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
-        filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
-        filter.addDataScheme("package");
-        mContext.registerReceiverAsUser(mBroadcastReceiver, UserHandle.ALL,
-                filter, null, null);
-        // Register for events related to sdcard installation.
-        IntentFilter sdFilter = new IntentFilter();
-        sdFilter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE);
-        sdFilter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE);
-        mContext.registerReceiverAsUser(mBroadcastReceiver, UserHandle.ALL,
-                sdFilter, null, null);
-
-        IntentFilter userFilter = new IntentFilter();
-        userFilter.addAction(Intent.ACTION_USER_REMOVED);
-        userFilter.addAction(Intent.ACTION_USER_STOPPING);
-        mContext.registerReceiver(new BroadcastReceiver() {
-            @Override
-            public void onReceive(Context context, Intent intent) {
-                if (Intent.ACTION_USER_REMOVED.equals(intent.getAction())) {
-                    onUserRemoved(intent.getIntExtra(Intent.EXTRA_USER_HANDLE,
-                            UserHandle.USER_NULL));
-                } else if (Intent.ACTION_USER_STOPPING.equals(intent.getAction())) {
-                    onUserStopping(intent.getIntExtra(Intent.EXTRA_USER_HANDLE,
-                            UserHandle.USER_NULL));
-                }
-            }
-        }, userFilter);
-    }
-
     @Override
-    public int allocateAppWidgetId(String packageName, int hostId, int userId)
-            throws RemoteException {
-        return getImplForUser(userId).allocateAppWidgetId(packageName, hostId);
+    public void onStart() {
+        publishBinderService(Context.APPWIDGET_SERVICE, mServiceImpl);
     }
 
     @Override
-    public int[] getAppWidgetIdsForHost(int hostId, int userId) throws RemoteException {
-        return getImplForUser(userId).getAppWidgetIdsForHost(hostId);
+    public void onBootPhase(int phase) {
+        if (phase == PHASE_THIRD_PARTY_APPS_CAN_START) {
+            mServiceImpl.systemRunning(isSafeMode());
+        }
     }
 
-    @Override
-    public void deleteAppWidgetId(int appWidgetId, int userId) throws RemoteException {
-        getImplForUser(userId).deleteAppWidgetId(appWidgetId);
-    }
+    private final AppWidgetServiceStub mServiceImpl = new AppWidgetServiceStub();
+
+    private class AppWidgetServiceStub extends IAppWidgetService.Stub {
+
+        private boolean mSafeMode;
+        private Locale mLocale;
+        private PackageManager mPackageManager;
+
+        public void systemRunning(boolean safeMode) {
+            mSafeMode = safeMode;
+
+            mAppWidgetServices.get(0).systemReady(safeMode);
+
+            // Register for the boot completed broadcast, so we can send the
+            // ENABLE broacasts. If we try to send them now, they time out,
+            // because the system isn't ready to handle them yet.
+            mContext.registerReceiverAsUser(mBroadcastReceiver, UserHandle.ALL,
+                    new IntentFilter(Intent.ACTION_BOOT_COMPLETED), null, null);
+
+            // Register for configuration changes so we can update the names
+            // of the widgets when the locale changes.
+            mContext.registerReceiverAsUser(mBroadcastReceiver, UserHandle.ALL,
+                    new IntentFilter(Intent.ACTION_CONFIGURATION_CHANGED), null, null);
+
+            // Register for broadcasts about package install, etc., so we can
+            // update the provider list.
+            IntentFilter filter = new IntentFilter();
+            filter.addAction(Intent.ACTION_PACKAGE_ADDED);
+            filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
+            filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
+            filter.addDataScheme("package");
+            mContext.registerReceiverAsUser(mBroadcastReceiver, UserHandle.ALL,
+                    filter, null, null);
+            // Register for events related to sdcard installation.
+            IntentFilter sdFilter = new IntentFilter();
+            sdFilter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE);
+            sdFilter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE);
+            mContext.registerReceiverAsUser(mBroadcastReceiver, UserHandle.ALL,
+                    sdFilter, null, null);
+
+            IntentFilter userFilter = new IntentFilter();
+            userFilter.addAction(Intent.ACTION_USER_REMOVED);
+            userFilter.addAction(Intent.ACTION_USER_STOPPING);
+            mContext.registerReceiver(new BroadcastReceiver() {
+                @Override
+                public void onReceive(Context context, Intent intent) {
+                    if (Intent.ACTION_USER_REMOVED.equals(intent.getAction())) {
+                        onUserRemoved(intent.getIntExtra(Intent.EXTRA_USER_HANDLE,
+                                UserHandle.USER_NULL));
+                    } else if (Intent.ACTION_USER_STOPPING.equals(intent.getAction())) {
+                        onUserStopping(intent.getIntExtra(Intent.EXTRA_USER_HANDLE,
+                                UserHandle.USER_NULL));
+                    }
+                }
+            }, userFilter);
+        }
 
-    @Override
-    public void deleteHost(int hostId, int userId) throws RemoteException {
-        getImplForUser(userId).deleteHost(hostId);
-    }
+        @Override
+        public int allocateAppWidgetId(String packageName, int hostId, int userId)
+                throws RemoteException {
+            return getImplForUser(userId).allocateAppWidgetId(packageName, hostId);
+        }
 
-    @Override
-    public void deleteAllHosts(int userId) throws RemoteException {
-        getImplForUser(userId).deleteAllHosts();
-    }
+        @Override
+        public int[] getAppWidgetIdsForHost(int hostId, int userId) throws RemoteException {
+            return getImplForUser(userId).getAppWidgetIdsForHost(hostId);
+        }
 
-    @Override
-    public void bindAppWidgetId(int appWidgetId, ComponentName provider, Bundle options, int userId)
-            throws RemoteException {
-        getImplForUser(userId).bindAppWidgetId(appWidgetId, provider, options);
-    }
+        @Override
+        public void deleteAppWidgetId(int appWidgetId, int userId) throws RemoteException {
+            getImplForUser(userId).deleteAppWidgetId(appWidgetId);
+        }
 
-    @Override
-    public boolean bindAppWidgetIdIfAllowed(
-            String packageName, int appWidgetId, ComponentName provider, Bundle options, int userId)
-                    throws RemoteException {
-        return getImplForUser(userId).bindAppWidgetIdIfAllowed(
-                packageName, appWidgetId, provider, options);
-    }
+        @Override
+        public void deleteHost(int hostId, int userId) throws RemoteException {
+            getImplForUser(userId).deleteHost(hostId);
+        }
 
-    @Override
-    public boolean hasBindAppWidgetPermission(String packageName, int userId)
-            throws RemoteException {
-        return getImplForUser(userId).hasBindAppWidgetPermission(packageName);
-    }
+        @Override
+        public void deleteAllHosts(int userId) throws RemoteException {
+            getImplForUser(userId).deleteAllHosts();
+        }
 
-    @Override
-    public void setBindAppWidgetPermission(String packageName, boolean permission, int userId)
-            throws RemoteException {
-        getImplForUser(userId).setBindAppWidgetPermission(packageName, permission);
-    }
+        @Override
+        public void bindAppWidgetId(int appWidgetId, ComponentName provider, Bundle options,
+                int userId) throws RemoteException {
+            getImplForUser(userId).bindAppWidgetId(appWidgetId, provider, options);
+        }
 
-    @Override
-    public void bindRemoteViewsService(int appWidgetId, Intent intent, IBinder connection,
-            int userId) throws RemoteException {
-        getImplForUser(userId).bindRemoteViewsService(appWidgetId, intent, connection);
-    }
+        @Override
+        public boolean bindAppWidgetIdIfAllowed(
+                String packageName, int appWidgetId, ComponentName provider, Bundle options,
+                int userId) throws RemoteException {
+            return getImplForUser(userId).bindAppWidgetIdIfAllowed(
+                    packageName, appWidgetId, provider, options);
+        }
 
-    @Override
-    public int[] startListening(IAppWidgetHost host, String packageName, int hostId,
-            List<RemoteViews> updatedViews, int userId) throws RemoteException {
-        return getImplForUser(userId).startListening(host, packageName, hostId, updatedViews);
-    }
+        @Override
+        public boolean hasBindAppWidgetPermission(String packageName, int userId)
+                throws RemoteException {
+            return getImplForUser(userId).hasBindAppWidgetPermission(packageName);
+        }
 
-    public void onUserRemoved(int userId) {
-        if (userId < 1) return;
-        synchronized (mAppWidgetServices) {
-            AppWidgetServiceImpl impl = mAppWidgetServices.get(userId);
-            mAppWidgetServices.remove(userId);
+        @Override
+        public void setBindAppWidgetPermission(String packageName, boolean permission, int userId)
+                throws RemoteException {
+            getImplForUser(userId).setBindAppWidgetPermission(packageName, permission);
+        }
 
-            if (impl == null) {
-                AppWidgetServiceImpl.getSettingsFile(userId).delete();
-            } else {
-                impl.onUserRemoved();
-            }
+        @Override
+        public void bindRemoteViewsService(int appWidgetId, Intent intent, IBinder connection,
+                int userId) throws RemoteException {
+            getImplForUser(userId).bindRemoteViewsService(appWidgetId, intent, connection);
+        }
+
+        @Override
+        public int[] startListening(IAppWidgetHost host, String packageName, int hostId,
+                List<RemoteViews> updatedViews, int userId) throws RemoteException {
+            return getImplForUser(userId).startListening(host, packageName, hostId, updatedViews);
         }
-    }
 
-    public void onUserStopping(int userId) {
-        if (userId < 1) return;
-        synchronized (mAppWidgetServices) {
-            AppWidgetServiceImpl impl = mAppWidgetServices.get(userId);
-            if (impl != null) {
+        public void onUserRemoved(int userId) {
+            if (userId < 1) return;
+            synchronized (mAppWidgetServices) {
+                AppWidgetServiceImpl impl = mAppWidgetServices.get(userId);
                 mAppWidgetServices.remove(userId);
-                impl.onUserStopping();
+
+                if (impl == null) {
+                    AppWidgetServiceImpl.getSettingsFile(userId).delete();
+                } else {
+                    impl.onUserRemoved();
+                }
             }
         }
-    }
 
-    private void checkPermission(int userId) {
-        int realUserId = ActivityManager.handleIncomingUser(
-                Binder.getCallingPid(),
-                Binder.getCallingUid(),
-                userId,
-                false, /* allowAll */
-                true, /* requireFull */
-                this.getClass().getSimpleName(),
-                this.getClass().getPackage().getName());
-    }
-
-    private AppWidgetServiceImpl getImplForUser(int userId) {
-        checkPermission(userId);
-        boolean sendInitial = false;
-        AppWidgetServiceImpl service;
-        synchronized (mAppWidgetServices) {
-            service = mAppWidgetServices.get(userId);
-            if (service == null) {
-                Slog.i(TAG, "Unable to find AppWidgetServiceImpl for user " + userId + ", adding");
-                // TODO: Verify that it's a valid user
-                service = new AppWidgetServiceImpl(mContext, userId, mSaveStateHandler);
-                service.systemReady(mSafeMode);
-                // Assume that BOOT_COMPLETED was received, as this is a non-primary user.
-                mAppWidgetServices.append(userId, service);
-                sendInitial = true;
+        public void onUserStopping(int userId) {
+            if (userId < 1) return;
+            synchronized (mAppWidgetServices) {
+                AppWidgetServiceImpl impl = mAppWidgetServices.get(userId);
+                if (impl != null) {
+                    mAppWidgetServices.remove(userId);
+                    impl.onUserStopping();
+                }
             }
         }
-        if (sendInitial) {
-            service.sendInitialBroadcasts();
+
+        private void checkPermission(int userId) {
+            int realUserId = ActivityManager.handleIncomingUser(
+                    Binder.getCallingPid(),
+                    Binder.getCallingUid(),
+                    userId,
+                    false, /* allowAll */
+                    true, /* requireFull */
+                    this.getClass().getSimpleName(),
+                    this.getClass().getPackage().getName());
         }
-        return service;
-    }
 
-    @Override
-    public int[] getAppWidgetIds(ComponentName provider, int userId) throws RemoteException {
-        return getImplForUser(userId).getAppWidgetIds(provider);
-    }
+        private AppWidgetServiceImpl getImplForUser(int userId) {
+            checkPermission(userId);
+            boolean sendInitial = false;
+            AppWidgetServiceImpl service;
+            synchronized (mAppWidgetServices) {
+                service = mAppWidgetServices.get(userId);
+                if (service == null) {
+                    Slog.i(TAG, "Unable to find AppWidgetServiceImpl for user " + userId
+                            + ", adding");
+                    // TODO: Verify that it's a valid user
+                    service = new AppWidgetServiceImpl(mContext, userId, mSaveStateHandler);
+                    service.systemReady(mSafeMode);
+                    // Assume that BOOT_COMPLETED was received, as this is a non-primary user.
+                    mAppWidgetServices.append(userId, service);
+                    sendInitial = true;
+                }
+            }
+            if (sendInitial) {
+                service.sendInitialBroadcasts();
+            }
+            return service;
+        }
 
-    @Override
-    public AppWidgetProviderInfo getAppWidgetInfo(int appWidgetId, int userId)
-            throws RemoteException {
-        return getImplForUser(userId).getAppWidgetInfo(appWidgetId);
-    }
+        @Override
+        public int[] getAppWidgetIds(ComponentName provider, int userId) throws RemoteException {
+            return getImplForUser(userId).getAppWidgetIds(provider);
+        }
 
-    @Override
-    public RemoteViews getAppWidgetViews(int appWidgetId, int userId) throws RemoteException {
-        return getImplForUser(userId).getAppWidgetViews(appWidgetId);
-    }
+        @Override
+        public AppWidgetProviderInfo getAppWidgetInfo(int appWidgetId, int userId)
+                throws RemoteException {
+            return getImplForUser(userId).getAppWidgetInfo(appWidgetId);
+        }
 
-    @Override
-    public void updateAppWidgetOptions(int appWidgetId, Bundle options, int userId) {
-        getImplForUser(userId).updateAppWidgetOptions(appWidgetId, options);
-    }
+        @Override
+        public RemoteViews getAppWidgetViews(int appWidgetId, int userId) throws RemoteException {
+            return getImplForUser(userId).getAppWidgetViews(appWidgetId);
+        }
 
-    @Override
-    public Bundle getAppWidgetOptions(int appWidgetId, int userId) {
-        return getImplForUser(userId).getAppWidgetOptions(appWidgetId);
-    }
+        @Override
+        public void updateAppWidgetOptions(int appWidgetId, Bundle options, int userId) {
+            getImplForUser(userId).updateAppWidgetOptions(appWidgetId, options);
+        }
 
-    @Override
-    public List<AppWidgetProviderInfo> getInstalledProviders(int categoryFilter, int userId)
-            throws RemoteException {
-        return getImplForUser(userId).getInstalledProviders(categoryFilter);
-    }
+        @Override
+        public Bundle getAppWidgetOptions(int appWidgetId, int userId) {
+            return getImplForUser(userId).getAppWidgetOptions(appWidgetId);
+        }
 
-    @Override
-    public void notifyAppWidgetViewDataChanged(int[] appWidgetIds, int viewId, int userId)
-            throws RemoteException {
-        getImplForUser(userId).notifyAppWidgetViewDataChanged(
-                appWidgetIds, viewId);
-    }
+        @Override
+        public List<AppWidgetProviderInfo> getInstalledProviders(int categoryFilter, int userId)
+                throws RemoteException {
+            return getImplForUser(userId).getInstalledProviders(categoryFilter);
+        }
 
-    @Override
-    public void partiallyUpdateAppWidgetIds(int[] appWidgetIds, RemoteViews views, int userId)
-            throws RemoteException {
-        getImplForUser(userId).partiallyUpdateAppWidgetIds(
-                appWidgetIds, views);
-    }
+        @Override
+        public void notifyAppWidgetViewDataChanged(int[] appWidgetIds, int viewId, int userId)
+                throws RemoteException {
+            getImplForUser(userId).notifyAppWidgetViewDataChanged(
+                    appWidgetIds, viewId);
+        }
 
-    @Override
-    public void stopListening(int hostId, int userId) throws RemoteException {
-        getImplForUser(userId).stopListening(hostId);
-    }
+        @Override
+        public void partiallyUpdateAppWidgetIds(int[] appWidgetIds, RemoteViews views, int userId)
+                throws RemoteException {
+            getImplForUser(userId).partiallyUpdateAppWidgetIds(
+                    appWidgetIds, views);
+        }
 
-    @Override
-    public void unbindRemoteViewsService(int appWidgetId, Intent intent, int userId)
-            throws RemoteException {
-        getImplForUser(userId).unbindRemoteViewsService(
-                appWidgetId, intent);
-    }
+        @Override
+        public void stopListening(int hostId, int userId) throws RemoteException {
+            getImplForUser(userId).stopListening(hostId);
+        }
 
-    @Override
-    public void updateAppWidgetIds(int[] appWidgetIds, RemoteViews views, int userId)
-            throws RemoteException {
-        getImplForUser(userId).updateAppWidgetIds(appWidgetIds, views);
-    }
+        @Override
+        public void unbindRemoteViewsService(int appWidgetId, Intent intent, int userId)
+                throws RemoteException {
+            getImplForUser(userId).unbindRemoteViewsService(
+                    appWidgetId, intent);
+        }
 
-    @Override
-    public void updateAppWidgetProvider(ComponentName provider, RemoteViews views, int userId)
-            throws RemoteException {
-        getImplForUser(userId).updateAppWidgetProvider(provider, views);
-    }
+        @Override
+        public void updateAppWidgetIds(int[] appWidgetIds, RemoteViews views, int userId)
+                throws RemoteException {
+            getImplForUser(userId).updateAppWidgetIds(appWidgetIds, views);
+        }
 
-    @Override
-    public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
-        mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DUMP, TAG);
-
-        // Dump the state of all the app widget providers
-        synchronized (mAppWidgetServices) {
-            IndentingPrintWriter ipw = new IndentingPrintWriter(pw, "  ");
-            for (int i = 0; i < mAppWidgetServices.size(); i++) {
-                pw.println("User: " + mAppWidgetServices.keyAt(i));
-                ipw.increaseIndent();
-                AppWidgetServiceImpl service = mAppWidgetServices.valueAt(i);
-                service.dump(fd, ipw, args);
-                ipw.decreaseIndent();
-            }
+        @Override
+        public void updateAppWidgetProvider(ComponentName provider, RemoteViews views, int userId)
+                throws RemoteException {
+            getImplForUser(userId).updateAppWidgetProvider(provider, views);
         }
-    }
 
-    BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
-        public void onReceive(Context context, Intent intent) {
-            String action = intent.getAction();
-            // Slog.d(TAG, "received " + action);
-            if (Intent.ACTION_BOOT_COMPLETED.equals(action)) {
-                int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL);
-                if (userId >= 0) {
-                    getImplForUser(userId).sendInitialBroadcasts();
-                } else {
-                    Slog.w(TAG, "Incorrect user handle supplied in " + intent);
-                }
-            } else if (Intent.ACTION_CONFIGURATION_CHANGED.equals(action)) {
+        @Override
+        public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
+            mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DUMP, TAG);
+
+            // Dump the state of all the app widget providers
+            synchronized (mAppWidgetServices) {
+                IndentingPrintWriter ipw = new IndentingPrintWriter(pw, "  ");
                 for (int i = 0; i < mAppWidgetServices.size(); i++) {
+                    pw.println("User: " + mAppWidgetServices.keyAt(i));
+                    ipw.increaseIndent();
                     AppWidgetServiceImpl service = mAppWidgetServices.valueAt(i);
-                    service.onConfigurationChanged();
+                    service.dump(fd, ipw, args);
+                    ipw.decreaseIndent();
                 }
-            } else {
-                int sendingUser = getSendingUserId();
-                if (sendingUser == UserHandle.USER_ALL) {
+            }
+        }
+
+        BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
+            public void onReceive(Context context, Intent intent) {
+                String action = intent.getAction();
+                // Slog.d(TAG, "received " + action);
+                if (Intent.ACTION_BOOT_COMPLETED.equals(action)) {
+                    int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL);
+                    if (userId >= 0) {
+                        getImplForUser(userId).sendInitialBroadcasts();
+                    } else {
+                        Slog.w(TAG, "Incorrect user handle supplied in " + intent);
+                    }
+                } else if (Intent.ACTION_CONFIGURATION_CHANGED.equals(action)) {
                     for (int i = 0; i < mAppWidgetServices.size(); i++) {
                         AppWidgetServiceImpl service = mAppWidgetServices.valueAt(i);
-                        service.onBroadcastReceived(intent);
+                        service.onConfigurationChanged();
                     }
                 } else {
-                    AppWidgetServiceImpl service = mAppWidgetServices.get(sendingUser);
-                    if (service != null) {
-                        service.onBroadcastReceived(intent);
+                    int sendingUser = getSendingUserId();
+                    if (sendingUser == UserHandle.USER_ALL) {
+                        for (int i = 0; i < mAppWidgetServices.size(); i++) {
+                            AppWidgetServiceImpl service = mAppWidgetServices.valueAt(i);
+                            service.onBroadcastReceived(intent);
+                        }
+                    } else {
+                        AppWidgetServiceImpl service = mAppWidgetServices.get(sendingUser);
+                        if (service != null) {
+                            service.onBroadcastReceived(intent);
+                        }
                     }
                 }
             }
-        }
-    };
+        };
+    }
 }
diff --git a/services/backup/java/com/android/server/backup/BackupManagerService.java b/services/backup/java/com/android/server/backup/BackupManagerService.java
index c2b0d10..c6dc5e6 100644
--- a/services/backup/java/com/android/server/backup/BackupManagerService.java
+++ b/services/backup/java/com/android/server/backup/BackupManagerService.java
@@ -84,6 +84,7 @@ import com.android.internal.backup.IBackupTransport;
 import com.android.internal.backup.IObbBackupService;
 import com.android.internal.backup.LocalTransport;
 import com.android.server.EventLogTags;
+import com.android.server.SystemService;
 import com.android.server.backup.PackageManagerBackupAgent.Metadata;
 
 import java.io.BufferedInputStream;
@@ -137,6 +138,7 @@ import javax.crypto.spec.PBEKeySpec;
 import javax.crypto.spec.SecretKeySpec;
 
 public class BackupManagerService extends IBackupManager.Stub {
+
     private static final String TAG = "BackupManagerService";
     private static final boolean DEBUG = true;
     private static final boolean MORE_DEBUG = false;
@@ -6089,7 +6091,7 @@ public class BackupManagerService extends IBackupManager.Stub {
                     }
                 }
 
-                // clean up the BackupManagerService side of the bookkeeping
+                // clean up the BackupManagerImpl side of the bookkeeping
                 // and cancel any pending timeout message
                 mBackupManager.clearRestoreSession(mSession);
             }
diff --git a/services/backup/java/com/android/server/backup/BackupManagerSystemService.java b/services/backup/java/com/android/server/backup/BackupManagerSystemService.java
new file mode 100644
index 0000000..db2c94a
--- /dev/null
+++ b/services/backup/java/com/android/server/backup/BackupManagerSystemService.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2013 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.backup;
+
+import android.content.Context;
+
+import com.android.server.SystemService;
+
+public class BackupManagerSystemService extends SystemService {
+    private BackupManagerService mBackupManagerImpl;
+
+    @Override
+    public void onCreate(Context context) {
+        mBackupManagerImpl = new BackupManagerService(context);
+    }
+
+    @Override
+    public void onStart() {
+        publishBinderService(Context.BACKUP_SERVICE, mBackupManagerImpl);
+    }
+}
+
diff --git a/services/core/java/com/android/server/SystemServer.java b/services/core/java/com/android/server/SystemServer.java
index 662df92..9ce41b2 100644
--- a/services/core/java/com/android/server/SystemServer.java
+++ b/services/core/java/com/android/server/SystemServer.java
@@ -32,6 +32,7 @@ import android.net.wifi.p2p.WifiP2pService;
 import android.os.Environment;
 import android.os.Handler;
 import android.os.HandlerThread;
+import android.os.IBinder;
 import android.os.Looper;
 import android.os.RemoteException;
 import android.os.ServiceManager;
@@ -53,11 +54,8 @@ import com.android.server.accessibility.AccessibilityManagerService;
 import com.android.server.accounts.AccountManagerService;
 import com.android.server.am.ActivityManagerService;
 import com.android.server.am.BatteryStatsService;
-import com.android.server.appwidget.AppWidgetService;
-import com.android.server.backup.BackupManagerService;
 import com.android.server.clipboard.ClipboardService;
 import com.android.server.content.ContentService;
-import com.android.server.devicepolicy.DevicePolicyManagerService;
 import com.android.server.display.DisplayManagerService;
 import com.android.server.dreams.DreamManagerService;
 import com.android.server.input.InputManagerService;
@@ -73,7 +71,6 @@ import com.android.server.pm.PackageManagerService;
 import com.android.server.pm.UserManagerService;
 import com.android.server.power.PowerManagerService;
 import com.android.server.power.ShutdownThread;
-import com.android.server.print.PrintManagerService;
 import com.android.server.search.SearchManagerService;
 import com.android.server.statusbar.StatusBarManagerService;
 import com.android.server.storage.DeviceStorageMonitorService;
@@ -98,6 +95,19 @@ class ServerThread {
 
     ContentResolver mContentResolver;
 
+    /*
+     * 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.BackupManagerSystemService";
+    private static final String DEVICE_POLICY_MANAGER_SERVICE_CLASS =
+            "com.android.server.devicepolicy.DevicePolicyManagerSystemService";
+    private static final String APPWIDGET_SERVICE_CLASS =
+            "com.android.server.appwidget.AppWidgetService";
+    private static final String PRINT_MANAGER_SERVICE_CLASS =
+            "com.android.server.print.PrintManagerService";
+
     void reportWtf(String msg, Throwable e) {
         Slog.w(TAG, "***********************************************");
         Log.wtf(TAG, "BOOT FAILURE " + msg, e);
@@ -357,11 +367,9 @@ class ServerThread {
             Slog.e("System", "************ Failure starting core service", e);
         }
 
-        DevicePolicyManagerService devicePolicy = null;
         StatusBarManagerService statusBar = null;
         INotificationManager notification = null;
         InputMethodManagerService imm = null;
-        AppWidgetService appWidget = null;
         WallpaperManagerService wallpaper = null;
         LocationManagerService location = null;
         CountryDetectorService countryDetector = null;
@@ -369,7 +377,6 @@ class ServerThread {
         LockSettingsService lockSettings = null;
         DreamManagerService dreamy = null;
         AssetAtlasService atlas = null;
-        PrintManagerService printManager = null;
         MediaRouterService mediaRouter = null;
 
         // Bring up services needed for UI.
@@ -441,8 +448,7 @@ class ServerThread {
 
                 try {
                     Slog.i(TAG, "Device Policy");
-                    devicePolicy = new DevicePolicyManagerService(context);
-                    ServiceManager.addService(Context.DEVICE_POLICY_SERVICE, devicePolicy);
+                    systemServiceManager.startService(DEVICE_POLICY_MANAGER_SERVICE_CLASS);
                 } catch (Throwable e) {
                     reportWtf("starting DevicePolicyService", e);
                 }
@@ -692,16 +698,14 @@ class ServerThread {
             if (!disableNonCoreServices) {
                 try {
                     Slog.i(TAG, "Backup Service");
-                    ServiceManager.addService(Context.BACKUP_SERVICE,
-                            new BackupManagerService(context));
+                    systemServiceManager.startService(BACKUP_MANAGER_SERVICE_CLASS);
                 } catch (Throwable e) {
                     Slog.e(TAG, "Failure starting Backup Service", e);
                 }
 
                 try {
                     Slog.i(TAG, "AppWidget Service");
-                    appWidget = new AppWidgetService(context);
-                    ServiceManager.addService(Context.APPWIDGET_SERVICE, appWidget);
+                    systemServiceManager.startService(APPWIDGET_SERVICE_CLASS);
                 } catch (Throwable e) {
                     reportWtf("starting AppWidget Service", e);
                 }
@@ -792,8 +796,7 @@ class ServerThread {
 
             try {
                 Slog.i(TAG, "Print Service");
-                printManager = new PrintManagerService(context);
-                ServiceManager.addService(Context.PRINT_SERVICE, printManager);
+                systemServiceManager.startService(PRINT_MANAGER_SERVICE_CLASS);
             } catch (Throwable e) {
                 reportWtf("starting Print Service", e);
             }
@@ -839,13 +842,8 @@ class ServerThread {
             }
         }
 
-        if (devicePolicy != null) {
-            try {
-                devicePolicy.systemReady();
-            } catch (Throwable e) {
-                reportWtf("making Device Policy Service ready", e);
-            }
-        }
+        // Needed by DevicePolicyManager for initialization
+        systemServiceManager.startBootPhase(SystemService.PHASE_LOCK_SETTINGS_READY);
 
         systemServiceManager.startBootPhase(SystemService.PHASE_SYSTEM_SERVICES_READY);
 
@@ -896,7 +894,6 @@ class ServerThread {
         final ConnectivityService connectivityF = connectivity;
         final DockObserver dockF = dock;
         final UsbService usbF = usb;
-        final AppWidgetService appWidgetF = appWidget;
         final WallpaperManagerService wallpaperF = wallpaper;
         final InputMethodManagerService immF = imm;
         final RecognitionManagerService recognitionF = recognition;
@@ -910,7 +907,6 @@ class ServerThread {
         final AssetAtlasService atlasF = atlas;
         final InputManagerService inputManagerF = inputManager;
         final TelephonyRegistry telephonyRegistryF = telephonyRegistry;
-        final PrintManagerService printManagerF = printManager;
         final MediaRouterService mediaRouterF = mediaRouter;
 
         // We now tell the activity manager it is okay to run third party
@@ -984,11 +980,6 @@ class ServerThread {
                 systemServiceManager.startBootPhase(SystemService.PHASE_THIRD_PARTY_APPS_CAN_START);
 
                 try {
-                    if (appWidgetF != null) appWidgetF.systemRunning(safeMode);
-                } catch (Throwable e) {
-                    reportWtf("Notifying AppWidgetService running", e);
-                }
-                try {
                     if (wallpaperF != null) wallpaperF.systemRunning();
                 } catch (Throwable e) {
                     reportWtf("Notifying WallpaperService running", e);
@@ -1048,12 +1039,6 @@ class ServerThread {
                 }
 
                 try {
-                    if (printManagerF != null) printManagerF.systemRuning();
-                } catch (Throwable e) {
-                    reportWtf("Notifying PrintManagerService running", e);
-                }
-
-                try {
                     if (mediaRouterF != null) mediaRouterF.systemRunning();
                 } catch (Throwable e) {
                     reportWtf("Notifying MediaRouterService running", e);
diff --git a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerSystemService.java b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerSystemService.java
new file mode 100644
index 0000000..160aa39
--- /dev/null
+++ b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerSystemService.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2013 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.devicepolicy;
+
+import android.content.Context;
+
+import com.android.server.SystemService;
+
+/**
+ * SystemService wrapper for the DevicePolicyManager implementation. Publishes
+ * Context.DEVICE_POLICY_SERVICE.
+ */
+public final class DevicePolicyManagerSystemService extends SystemService {
+    private DevicePolicyManagerService mDevicePolicyManagerImpl;
+
+    @Override
+    public void onCreate(Context context) {
+        mDevicePolicyManagerImpl = new DevicePolicyManagerService(context);
+    }
+
+    @Override
+    public void onStart() {
+        publishBinderService(Context.DEVICE_POLICY_SERVICE, mDevicePolicyManagerImpl);
+    }
+
+    @Override
+    public void onBootPhase(int phase) {
+        if (phase == PHASE_LOCK_SETTINGS_READY) {
+            mDevicePolicyManagerImpl.systemReady();
+        }
+    }
+}
\ No newline at end of file
diff --git a/services/print/java/com/android/server/print/PrintManagerService.java b/services/print/java/com/android/server/print/PrintManagerService.java
index 98acc27..852736b 100644
--- a/services/print/java/com/android/server/print/PrintManagerService.java
+++ b/services/print/java/com/android/server/print/PrintManagerService.java
@@ -51,6 +51,8 @@ import android.util.SparseArray;
 import com.android.internal.R;
 import com.android.internal.content.PackageMonitor;
 import com.android.internal.os.BackgroundThread;
+import com.android.server.SystemService;
+import com.android.server.devicepolicy.DevicePolicyManagerService;
 
 import java.io.FileDescriptor;
 import java.io.PrintWriter;
@@ -58,599 +60,631 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.Set;
 
-public final class PrintManagerService extends IPrintManager.Stub {
-
-    private static final char COMPONENT_NAME_SEPARATOR = ':';
-
-    private static final String EXTRA_PRINT_SERVICE_COMPONENT_NAME =
-            "EXTRA_PRINT_SERVICE_COMPONENT_NAME";
-
-    private final Object mLock = new Object();
-
-    private final Context mContext;
-
-    private final SparseArray<UserState> mUserStates = new SparseArray<UserState>();
+/**
+ * SystemService wrapper for the PrintManager implementation. Publishes
+ * Context.PRINT_SERVICE.
+ * PrintManager implementation is contained within.
+ */
 
-    private int mCurrentUserId = UserHandle.USER_OWNER;
+public final class PrintManagerService extends SystemService {
 
-    public PrintManagerService(Context context) {
-        mContext = context;
-        registerContentObservers();
-        registerBoradcastReceivers();
-    }
-
-    public void systemRuning() {
-        BackgroundThread.getHandler().post(new Runnable() {
-            @Override
-            public void run() {
-                final UserState userState;
-                synchronized (mLock) {
-                    userState = getCurrentUserStateLocked();
-                    userState.updateIfNeededLocked();
-                }
-                // This is the first time we switch to this user after boot, so
-                // now is the time to remove obsolete print jobs since they
-                // are from the last boot and no application would query them.
-                userState.removeObsoletePrintJobs();
-            }
-        });
-    }
+    private PrintManagerImpl mPrintManagerImpl;
 
     @Override
-    public Bundle print(String printJobName, IPrintDocumentAdapter adapter,
-            PrintAttributes attributes, String packageName, int appId, int userId) {
-        final int resolvedAppId = resolveCallingAppEnforcingPermissions(appId);
-        final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
-        String resolvedPackageName = resolveCallingPackageNameEnforcingSecurity(packageName);
-        final UserState userState;
-        synchronized (mLock) {
-            userState = getOrCreateUserStateLocked(resolvedUserId);
-        }
-        final long identity = Binder.clearCallingIdentity();
-        try {
-            return userState.print(printJobName, adapter, attributes,
-                    resolvedPackageName, resolvedAppId);
-        } finally {
-            Binder.restoreCallingIdentity(identity);
-        }
+    public void onCreate(Context context) {
+        mPrintManagerImpl = new PrintManagerImpl(context);
     }
-
     @Override
-    public List<PrintJobInfo> getPrintJobInfos(int appId, int userId) {
-        final int resolvedAppId = resolveCallingAppEnforcingPermissions(appId);
-        final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
-        final UserState userState;
-        synchronized (mLock) {
-            userState = getOrCreateUserStateLocked(resolvedUserId);
-        }
-        final long identity = Binder.clearCallingIdentity();
-        try {
-            return userState.getPrintJobInfos(resolvedAppId);
-        } finally {
-            Binder.restoreCallingIdentity(identity);
-        }
+    public void onStart() {
+        publishBinderService(Context.PRINT_SERVICE, mPrintManagerImpl);
     }
 
     @Override
-    public PrintJobInfo getPrintJobInfo(PrintJobId printJobId, int appId, int userId) {
-        final int resolvedAppId = resolveCallingAppEnforcingPermissions(appId);
-        final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
-        final UserState userState;
-        synchronized (mLock) {
-            userState = getOrCreateUserStateLocked(resolvedUserId);
-        }
-        final long identity = Binder.clearCallingIdentity();
-        try {
-            return userState.getPrintJobInfo(printJobId, resolvedAppId);
-        } finally {
-            Binder.restoreCallingIdentity(identity);
+    public void onBootPhase(int phase) {
+        if (phase == PHASE_THIRD_PARTY_APPS_CAN_START) {
+            mPrintManagerImpl.systemRunning();
         }
     }
 
-    @Override
-    public void cancelPrintJob(PrintJobId printJobId, int appId, int userId) {
-        final int resolvedAppId = resolveCallingAppEnforcingPermissions(appId);
-        final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
-        final UserState userState;
-        synchronized (mLock) {
-            userState = getOrCreateUserStateLocked(resolvedUserId);
-        }
-        final long identity = Binder.clearCallingIdentity();
-        try {
-            userState.cancelPrintJob(printJobId, resolvedAppId);
-        } finally {
-            Binder.restoreCallingIdentity(identity);
-        }
-    }
+    class PrintManagerImpl extends IPrintManager.Stub {
+        private static final char COMPONENT_NAME_SEPARATOR = ':';
 
-    @Override
-    public void restartPrintJob(PrintJobId printJobId, int appId, int userId) {
-        final int resolvedAppId = resolveCallingAppEnforcingPermissions(appId);
-        final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
-        final UserState userState;
-        synchronized (mLock) {
-            userState = getOrCreateUserStateLocked(resolvedUserId);
-        }
-        final long identity = Binder.clearCallingIdentity();
-        try {
-            userState.restartPrintJob(printJobId, resolvedAppId);
-        } finally {
-            Binder.restoreCallingIdentity(identity);
-        }
-    }
+        private static final String EXTRA_PRINT_SERVICE_COMPONENT_NAME =
+                "EXTRA_PRINT_SERVICE_COMPONENT_NAME";
 
-    @Override
-    public List<PrintServiceInfo> getEnabledPrintServices(int userId) {
-        final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
-        final UserState userState;
-        synchronized (mLock) {
-            userState = getOrCreateUserStateLocked(resolvedUserId);
-        }
-        final long identity = Binder.clearCallingIdentity();
-        try {
-            return userState.getEnabledPrintServices();
-        } finally {
-            Binder.restoreCallingIdentity(identity);
-        }
-    }
+        private final Object mLock = new Object();
 
-    @Override
-    public List<PrintServiceInfo> getInstalledPrintServices(int userId) {
-        final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
-        final UserState userState;
-        synchronized (mLock) {
-            userState = getOrCreateUserStateLocked(resolvedUserId);
-        }
-        final long identity = Binder.clearCallingIdentity();
-        try {
-            return userState.getInstalledPrintServices();
-        } finally {
-            Binder.restoreCallingIdentity(identity);
-        }
-    }
+        private final Context mContext;
 
-    @Override
-    public void createPrinterDiscoverySession(IPrinterDiscoveryObserver observer,
-            int userId) {
-        final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
-        final UserState userState;
-        synchronized (mLock) {
-            userState = getOrCreateUserStateLocked(resolvedUserId);
-        }
-        final long identity = Binder.clearCallingIdentity();
-        try {
-            userState.createPrinterDiscoverySession(observer);
-        } finally {
-            Binder.restoreCallingIdentity(identity);
-        }
-    }
+        private final SparseArray<UserState> mUserStates = new SparseArray<UserState>();
 
-    @Override
-    public void destroyPrinterDiscoverySession(IPrinterDiscoveryObserver observer,
-            int userId) {
-        final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
-        final UserState userState;
-        synchronized (mLock) {
-            userState = getOrCreateUserStateLocked(resolvedUserId);
-        }
-        final long identity = Binder.clearCallingIdentity();
-        try {
-            userState.destroyPrinterDiscoverySession(observer);
-        } finally {
-            Binder.restoreCallingIdentity(identity);
+        private int mCurrentUserId = UserHandle.USER_OWNER;
+
+        PrintManagerImpl(Context context) {
+            mContext = context;
+            registerContentObservers();
+            registerBoradcastReceivers();
         }
-    }
 
-    @Override
-    public void startPrinterDiscovery(IPrinterDiscoveryObserver observer,
-            List<PrinterId> priorityList, int userId) {
-        final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
-        final UserState userState;
-        synchronized (mLock) {
-            userState = getOrCreateUserStateLocked(resolvedUserId);
+        public void systemRunning() {
+            BackgroundThread.getHandler().post(new Runnable() {
+                @Override
+                public void run() {
+                    final UserState userState;
+                    synchronized (mLock) {
+                        userState = getCurrentUserStateLocked();
+                        userState.updateIfNeededLocked();
+                    }
+                    // This is the first time we switch to this user after boot, so
+                    // now is the time to remove obsolete print jobs since they
+                    // are from the last boot and no application would query them.
+                    userState.removeObsoletePrintJobs();
+                }
+            });
+        }
+
+        @Override
+        public Bundle print(String printJobName, IPrintDocumentAdapter adapter,
+                PrintAttributes attributes, String packageName, int appId, int userId) {
+            final int resolvedAppId = resolveCallingAppEnforcingPermissions(appId);
+            final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
+            String resolvedPackageName = resolveCallingPackageNameEnforcingSecurity(packageName);
+            final UserState userState;
+            synchronized (mLock) {
+                userState = getOrCreateUserStateLocked(resolvedUserId);
+            }
+            final long identity = Binder.clearCallingIdentity();
+            try {
+                return userState.print(printJobName, adapter, attributes,
+                        resolvedPackageName, resolvedAppId);
+            } finally {
+                Binder.restoreCallingIdentity(identity);
+            }
         }
-        final long identity = Binder.clearCallingIdentity();
-        try {
-            userState.startPrinterDiscovery(observer, priorityList);
-        } finally {
-            Binder.restoreCallingIdentity(identity);
+
+        @Override
+        public List<PrintJobInfo> getPrintJobInfos(int appId, int userId) {
+            final int resolvedAppId = resolveCallingAppEnforcingPermissions(appId);
+            final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
+            final UserState userState;
+            synchronized (mLock) {
+                userState = getOrCreateUserStateLocked(resolvedUserId);
+            }
+            final long identity = Binder.clearCallingIdentity();
+            try {
+                return userState.getPrintJobInfos(resolvedAppId);
+            } finally {
+                Binder.restoreCallingIdentity(identity);
+            }
         }
-    }
 
-    @Override
-    public void stopPrinterDiscovery(IPrinterDiscoveryObserver observer, int userId) {
-        final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
-        final UserState userState;
-        synchronized (mLock) {
-            userState = getOrCreateUserStateLocked(resolvedUserId);
+        @Override
+        public PrintJobInfo getPrintJobInfo(PrintJobId printJobId, int appId, int userId) {
+            final int resolvedAppId = resolveCallingAppEnforcingPermissions(appId);
+            final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
+            final UserState userState;
+            synchronized (mLock) {
+                userState = getOrCreateUserStateLocked(resolvedUserId);
+            }
+            final long identity = Binder.clearCallingIdentity();
+            try {
+                return userState.getPrintJobInfo(printJobId, resolvedAppId);
+            } finally {
+                Binder.restoreCallingIdentity(identity);
+            }
         }
-        final long identity = Binder.clearCallingIdentity();
-        try {
-            userState.stopPrinterDiscovery(observer);
-        } finally {
-            Binder.restoreCallingIdentity(identity);
+
+        @Override
+        public void cancelPrintJob(PrintJobId printJobId, int appId, int userId) {
+            final int resolvedAppId = resolveCallingAppEnforcingPermissions(appId);
+            final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
+            final UserState userState;
+            synchronized (mLock) {
+                userState = getOrCreateUserStateLocked(resolvedUserId);
+            }
+            final long identity = Binder.clearCallingIdentity();
+            try {
+                userState.cancelPrintJob(printJobId, resolvedAppId);
+            } finally {
+                Binder.restoreCallingIdentity(identity);
+            }
         }
-    }
 
-    @Override
-    public void validatePrinters(List<PrinterId> printerIds, int userId) {
-        final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
-        final UserState userState;
-        synchronized (mLock) {
-            userState = getOrCreateUserStateLocked(resolvedUserId);
+        @Override
+        public void restartPrintJob(PrintJobId printJobId, int appId, int userId) {
+            final int resolvedAppId = resolveCallingAppEnforcingPermissions(appId);
+            final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
+            final UserState userState;
+            synchronized (mLock) {
+                userState = getOrCreateUserStateLocked(resolvedUserId);
+            }
+            final long identity = Binder.clearCallingIdentity();
+            try {
+                userState.restartPrintJob(printJobId, resolvedAppId);
+            } finally {
+                Binder.restoreCallingIdentity(identity);
+            }
         }
-        final long identity = Binder.clearCallingIdentity();
-        try {
-            userState.validatePrinters(printerIds);
-        } finally {
-            Binder.restoreCallingIdentity(identity);
+
+        @Override
+        public List<PrintServiceInfo> getEnabledPrintServices(int userId) {
+            final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
+            final UserState userState;
+            synchronized (mLock) {
+                userState = getOrCreateUserStateLocked(resolvedUserId);
+            }
+            final long identity = Binder.clearCallingIdentity();
+            try {
+                return userState.getEnabledPrintServices();
+            } finally {
+                Binder.restoreCallingIdentity(identity);
+            }
         }
-    }
 
-    @Override
-    public void startPrinterStateTracking(PrinterId printerId, int userId) {
-        final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
-        final UserState userState;
-        synchronized (mLock) {
-            userState = getOrCreateUserStateLocked(resolvedUserId);
+        @Override
+        public List<PrintServiceInfo> getInstalledPrintServices(int userId) {
+            final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
+            final UserState userState;
+            synchronized (mLock) {
+                userState = getOrCreateUserStateLocked(resolvedUserId);
+            }
+            final long identity = Binder.clearCallingIdentity();
+            try {
+                return userState.getInstalledPrintServices();
+            } finally {
+                Binder.restoreCallingIdentity(identity);
+            }
         }
-        final long identity = Binder.clearCallingIdentity();
-        try {
-            userState.startPrinterStateTracking(printerId);
-        } finally {
-            Binder.restoreCallingIdentity(identity);
+
+        @Override
+        public void createPrinterDiscoverySession(IPrinterDiscoveryObserver observer,
+                int userId) {
+            final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
+            final UserState userState;
+            synchronized (mLock) {
+                userState = getOrCreateUserStateLocked(resolvedUserId);
+            }
+            final long identity = Binder.clearCallingIdentity();
+            try {
+                userState.createPrinterDiscoverySession(observer);
+            } finally {
+                Binder.restoreCallingIdentity(identity);
+            }
         }
-    }
 
-    @Override
-    public void stopPrinterStateTracking(PrinterId printerId, int userId) {
-        final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
-        final UserState userState;
-        synchronized (mLock) {
-            userState = getOrCreateUserStateLocked(resolvedUserId);
+        @Override
+        public void destroyPrinterDiscoverySession(IPrinterDiscoveryObserver observer,
+                int userId) {
+            final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
+            final UserState userState;
+            synchronized (mLock) {
+                userState = getOrCreateUserStateLocked(resolvedUserId);
+            }
+            final long identity = Binder.clearCallingIdentity();
+            try {
+                userState.destroyPrinterDiscoverySession(observer);
+            } finally {
+                Binder.restoreCallingIdentity(identity);
+            }
         }
-        final long identity = Binder.clearCallingIdentity();
-        try {
-            userState.stopPrinterStateTracking(printerId);
-        } finally {
-            Binder.restoreCallingIdentity(identity);
+
+        @Override
+        public void startPrinterDiscovery(IPrinterDiscoveryObserver observer,
+                List<PrinterId> priorityList, int userId) {
+            final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
+            final UserState userState;
+            synchronized (mLock) {
+                userState = getOrCreateUserStateLocked(resolvedUserId);
+            }
+            final long identity = Binder.clearCallingIdentity();
+            try {
+                userState.startPrinterDiscovery(observer, priorityList);
+            } finally {
+                Binder.restoreCallingIdentity(identity);
+            }
         }
-    }
 
-    @Override
-    public void addPrintJobStateChangeListener(IPrintJobStateChangeListener listener,
-            int appId, int userId) throws RemoteException {
-        final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
-        final int resolvedAppId = resolveCallingAppEnforcingPermissions(appId);
-        final UserState userState;
-        synchronized (mLock) {
-            userState = getOrCreateUserStateLocked(resolvedUserId);
+        @Override
+        public void stopPrinterDiscovery(IPrinterDiscoveryObserver observer, int userId) {
+            final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
+            final UserState userState;
+            synchronized (mLock) {
+                userState = getOrCreateUserStateLocked(resolvedUserId);
+            }
+            final long identity = Binder.clearCallingIdentity();
+            try {
+                userState.stopPrinterDiscovery(observer);
+            } finally {
+                Binder.restoreCallingIdentity(identity);
+            }
         }
-        final long identity = Binder.clearCallingIdentity();
-        try {
-            userState.addPrintJobStateChangeListener(listener, resolvedAppId);
-        } finally {
-            Binder.restoreCallingIdentity(identity);
+
+        @Override
+        public void validatePrinters(List<PrinterId> printerIds, int userId) {
+            final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
+            final UserState userState;
+            synchronized (mLock) {
+                userState = getOrCreateUserStateLocked(resolvedUserId);
+            }
+            final long identity = Binder.clearCallingIdentity();
+            try {
+                userState.validatePrinters(printerIds);
+            } finally {
+                Binder.restoreCallingIdentity(identity);
+            }
         }
-    }
 
-    @Override
-    public void removePrintJobStateChangeListener(IPrintJobStateChangeListener listener,
-            int userId) {
-        final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
-        final UserState userState;
-        synchronized (mLock) {
-            userState = getOrCreateUserStateLocked(resolvedUserId);
+        @Override
+        public void startPrinterStateTracking(PrinterId printerId, int userId) {
+            final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
+            final UserState userState;
+            synchronized (mLock) {
+                userState = getOrCreateUserStateLocked(resolvedUserId);
+            }
+            final long identity = Binder.clearCallingIdentity();
+            try {
+                userState.startPrinterStateTracking(printerId);
+            } finally {
+                Binder.restoreCallingIdentity(identity);
+            }
         }
-        final long identity = Binder.clearCallingIdentity();
-        try {
-            userState.removePrintJobStateChangeListener(listener);
-        } finally {
-            Binder.restoreCallingIdentity(identity);
+
+        @Override
+        public void stopPrinterStateTracking(PrinterId printerId, int userId) {
+            final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
+            final UserState userState;
+            synchronized (mLock) {
+                userState = getOrCreateUserStateLocked(resolvedUserId);
+            }
+            final long identity = Binder.clearCallingIdentity();
+            try {
+                userState.stopPrinterStateTracking(printerId);
+            } finally {
+                Binder.restoreCallingIdentity(identity);
+            }
         }
-    }
 
-    @Override
-    public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
-        if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP)
-                != PackageManager.PERMISSION_GRANTED) {
-            pw.println("Permission Denial: can't dump PrintManager from from pid="
-                    + Binder.getCallingPid()
-                    + ", uid=" + Binder.getCallingUid());
-            return;
+        @Override
+        public void addPrintJobStateChangeListener(IPrintJobStateChangeListener listener,
+                int appId, int userId) throws RemoteException {
+            final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
+            final int resolvedAppId = resolveCallingAppEnforcingPermissions(appId);
+            final UserState userState;
+            synchronized (mLock) {
+                userState = getOrCreateUserStateLocked(resolvedUserId);
+            }
+            final long identity = Binder.clearCallingIdentity();
+            try {
+                userState.addPrintJobStateChangeListener(listener, resolvedAppId);
+            } finally {
+                Binder.restoreCallingIdentity(identity);
+            }
         }
 
-        synchronized (mLock) {
+        @Override
+        public void removePrintJobStateChangeListener(IPrintJobStateChangeListener listener,
+                int userId) {
+            final int resolvedUserId = resolveCallingUserEnforcingPermissions(userId);
+            final UserState userState;
+            synchronized (mLock) {
+                userState = getOrCreateUserStateLocked(resolvedUserId);
+            }
             final long identity = Binder.clearCallingIdentity();
             try {
-                pw.println("PRINT MANAGER STATE (dumpsys print)");
-                final int userStateCount = mUserStates.size();
-                for (int i = 0; i < userStateCount; i++) {
-                    UserState userState = mUserStates.valueAt(i);
-                    userState.dump(fd, pw, "");
-                    pw.println();
-                }
+                userState.removePrintJobStateChangeListener(listener);
             } finally {
                 Binder.restoreCallingIdentity(identity);
             }
         }
-    }
 
-    private void registerContentObservers() {
-        final Uri enabledPrintServicesUri = Settings.Secure.getUriFor(
-                Settings.Secure.ENABLED_PRINT_SERVICES);
+        @Override
+        public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
+            if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP)
+                    != PackageManager.PERMISSION_GRANTED) {
+                pw.println("Permission Denial: can't dump PrintManager from from pid="
+                        + Binder.getCallingPid()
+                        + ", uid=" + Binder.getCallingUid());
+                return;
+            }
 
-        ContentObserver observer = new ContentObserver(BackgroundThread.getHandler()) {
-            @Override
-            public void onChange(boolean selfChange, Uri uri) {
-                if (enabledPrintServicesUri.equals(uri)) {
-                    synchronized (mLock) {
-                        UserState userState = getCurrentUserStateLocked();
-                        userState.updateIfNeededLocked();
+            synchronized (mLock) {
+                final long identity = Binder.clearCallingIdentity();
+                try {
+                    pw.println("PRINT MANAGER STATE (dumpsys print)");
+                    final int userStateCount = mUserStates.size();
+                    for (int i = 0; i < userStateCount; i++) {
+                        UserState userState = mUserStates.valueAt(i);
+                        userState.dump(fd, pw, "");
+                        pw.println();
                     }
+                } finally {
+                    Binder.restoreCallingIdentity(identity);
                 }
             }
-        };
+        }
 
-        mContext.getContentResolver().registerContentObserver(enabledPrintServicesUri,
-                false, observer, UserHandle.USER_ALL);
-    }
+        private void registerContentObservers() {
+            final Uri enabledPrintServicesUri = Settings.Secure.getUriFor(
+                    Settings.Secure.ENABLED_PRINT_SERVICES);
 
-    private void registerBoradcastReceivers() {
-        PackageMonitor monitor = new PackageMonitor() {
-            @Override
-            public boolean onPackageChanged(String packageName, int uid, String[] components) {
-                synchronized (mLock) {
-                    UserState userState = getOrCreateUserStateLocked(getChangingUserId());
-                    Iterator<ComponentName> iterator = userState.getEnabledServices().iterator();
-                    while (iterator.hasNext()) {
-                        ComponentName componentName = iterator.next();
-                        if (packageName.equals(componentName.getPackageName())) {
+            ContentObserver observer = new ContentObserver(BackgroundThread.getHandler()) {
+                @Override
+                public void onChange(boolean selfChange, Uri uri) {
+                    if (enabledPrintServicesUri.equals(uri)) {
+                        synchronized (mLock) {
+                            UserState userState = getCurrentUserStateLocked();
                             userState.updateIfNeededLocked();
-                            return true;
                         }
                     }
                 }
-                return false;
-            }
-
-            @Override
-            public void onPackageRemoved(String packageName, int uid) {
-                synchronized (mLock) {
-                    UserState userState = getOrCreateUserStateLocked(getChangingUserId());
-                    Iterator<ComponentName> iterator = userState.getEnabledServices().iterator();
-                    while (iterator.hasNext()) {
-                        ComponentName componentName = iterator.next();
-                        if (packageName.equals(componentName.getPackageName())) {
-                            iterator.remove();
-                            persistComponentNamesToSettingLocked(
-                                    Settings.Secure.ENABLED_PRINT_SERVICES,
-                                    userState.getEnabledServices(), getChangingUserId());
-                            userState.updateIfNeededLocked();
-                            return;
+            };
+
+            mContext.getContentResolver().registerContentObserver(enabledPrintServicesUri,
+                    false, observer, UserHandle.USER_ALL);
+        }
+
+        private void registerBoradcastReceivers() {
+            PackageMonitor monitor = new PackageMonitor() {
+                @Override
+                public boolean onPackageChanged(String packageName, int uid, String[] components) {
+                    synchronized (mLock) {
+                        UserState userState = getOrCreateUserStateLocked(getChangingUserId());
+                        Iterator<ComponentName> iterator = userState.getEnabledServices()
+                                .iterator();
+                        while (iterator.hasNext()) {
+                            ComponentName componentName = iterator.next();
+                            if (packageName.equals(componentName.getPackageName())) {
+                                userState.updateIfNeededLocked();
+                                return true;
+                            }
                         }
                     }
+                    return false;
                 }
-            }
 
-            @Override
-            public boolean onHandleForceStop(Intent intent, String[] stoppedPackages,
-                    int uid, boolean doit) {
-                synchronized (mLock) {
-                    UserState userState = getOrCreateUserStateLocked(getChangingUserId());
-                    boolean stoppedSomePackages = false;
-                    Iterator<ComponentName> iterator = userState.getEnabledServices().iterator();
-                    while (iterator.hasNext()) {
-                        ComponentName componentName = iterator.next();
-                        String componentPackage = componentName.getPackageName();
-                        for (String stoppedPackage : stoppedPackages) {
-                            if (componentPackage.equals(stoppedPackage)) {
-                                if (!doit) {
-                                    return true;
-                                }
-                                stoppedSomePackages = true;
-                                break;
+                @Override
+                public void onPackageRemoved(String packageName, int uid) {
+                    synchronized (mLock) {
+                        UserState userState = getOrCreateUserStateLocked(getChangingUserId());
+                        Iterator<ComponentName> iterator = userState.getEnabledServices()
+                                .iterator();
+                        while (iterator.hasNext()) {
+                            ComponentName componentName = iterator.next();
+                            if (packageName.equals(componentName.getPackageName())) {
+                                iterator.remove();
+                                persistComponentNamesToSettingLocked(
+                                        Settings.Secure.ENABLED_PRINT_SERVICES,
+                                        userState.getEnabledServices(), getChangingUserId());
+                                userState.updateIfNeededLocked();
+                                return;
                             }
                         }
                     }
-                    if (stoppedSomePackages) {
-                        userState.updateIfNeededLocked();
+                }
+
+                @Override
+                public boolean onHandleForceStop(Intent intent, String[] stoppedPackages,
+                        int uid, boolean doit) {
+                    synchronized (mLock) {
+                        UserState userState = getOrCreateUserStateLocked(getChangingUserId());
+                        boolean stoppedSomePackages = false;
+                        Iterator<ComponentName> iterator = userState.getEnabledServices()
+                                .iterator();
+                        while (iterator.hasNext()) {
+                            ComponentName componentName = iterator.next();
+                            String componentPackage = componentName.getPackageName();
+                            for (String stoppedPackage : stoppedPackages) {
+                                if (componentPackage.equals(stoppedPackage)) {
+                                    if (!doit) {
+                                        return true;
+                                    }
+                                    stoppedSomePackages = true;
+                                    break;
+                                }
+                            }
+                        }
+                        if (stoppedSomePackages) {
+                            userState.updateIfNeededLocked();
+                        }
+                        return false;
                     }
-                    return false;
                 }
-            }
 
-            @Override
-            public void onPackageAdded(String packageName, int uid) {
-                Intent intent = new Intent(android.printservice.PrintService.SERVICE_INTERFACE);
-                intent.setPackage(packageName);
+                @Override
+                public void onPackageAdded(String packageName, int uid) {
+                    Intent intent = new Intent(android.printservice.PrintService.SERVICE_INTERFACE);
+                    intent.setPackage(packageName);
 
-                List<ResolveInfo> installedServices = mContext.getPackageManager()
-                        .queryIntentServicesAsUser(intent, PackageManager.GET_SERVICES,
-                                getChangingUserId());
+                    List<ResolveInfo> installedServices = mContext.getPackageManager()
+                            .queryIntentServicesAsUser(intent, PackageManager.GET_SERVICES,
+                                    getChangingUserId());
 
-                if (installedServices == null) {
-                    return;
-                }
+                    if (installedServices == null) {
+                        return;
+                    }
 
-                final int installedServiceCount = installedServices.size();
-                for (int i = 0; i < installedServiceCount; i++) {
-                    ServiceInfo serviceInfo = installedServices.get(i).serviceInfo;
-                    ComponentName component = new ComponentName(serviceInfo.packageName,
-                            serviceInfo.name);
-                    String label = serviceInfo.loadLabel(mContext.getPackageManager()).toString();
-                    showEnableInstalledPrintServiceNotification(component, label,
-                            getChangingUserId());
+                    final int installedServiceCount = installedServices.size();
+                    for (int i = 0; i < installedServiceCount; i++) {
+                        ServiceInfo serviceInfo = installedServices.get(i).serviceInfo;
+                        ComponentName component = new ComponentName(serviceInfo.packageName,
+                                serviceInfo.name);
+                        String label = serviceInfo.loadLabel(mContext.getPackageManager())
+                                .toString();
+                        showEnableInstalledPrintServiceNotification(component, label,
+                                getChangingUserId());
+                    }
                 }
-            }
 
-            private void persistComponentNamesToSettingLocked(String settingName,
-                    Set<ComponentName> componentNames, int userId) {
-                StringBuilder builder = new StringBuilder();
-                for (ComponentName componentName : componentNames) {
-                    if (builder.length() > 0) {
-                        builder.append(COMPONENT_NAME_SEPARATOR);
+                private void persistComponentNamesToSettingLocked(String settingName,
+                        Set<ComponentName> componentNames, int userId) {
+                    StringBuilder builder = new StringBuilder();
+                    for (ComponentName componentName : componentNames) {
+                        if (builder.length() > 0) {
+                            builder.append(COMPONENT_NAME_SEPARATOR);
+                        }
+                        builder.append(componentName.flattenToShortString());
                     }
-                    builder.append(componentName.flattenToShortString());
+                    Settings.Secure.putStringForUser(mContext.getContentResolver(),
+                            settingName, builder.toString(), userId);
                 }
-                Settings.Secure.putStringForUser(mContext.getContentResolver(),
-                        settingName, builder.toString(), userId);
-            }
-        };
-
-        // package changes
-        monitor.register(mContext, BackgroundThread.getHandler().getLooper(),
-                UserHandle.ALL, true);
-
-        // user changes
-        IntentFilter intentFilter = new IntentFilter();
-        intentFilter.addAction(Intent.ACTION_USER_SWITCHED);
-        intentFilter.addAction(Intent.ACTION_USER_REMOVED);
-
-        mContext.registerReceiverAsUser(new BroadcastReceiver() {
-            @Override
-            public void onReceive(Context context, Intent intent) {
-                String action = intent.getAction();
-                if (Intent.ACTION_USER_SWITCHED.equals(action)) {
-                    switchUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0));
-                } else if (Intent.ACTION_USER_REMOVED.equals(action)) {
-                    removeUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0));
+            };
+
+            // package changes
+            monitor.register(mContext, BackgroundThread.getHandler().getLooper(),
+                    UserHandle.ALL, true);
+
+            // user changes
+            IntentFilter intentFilter = new IntentFilter();
+            intentFilter.addAction(Intent.ACTION_USER_SWITCHED);
+            intentFilter.addAction(Intent.ACTION_USER_REMOVED);
+
+            mContext.registerReceiverAsUser(new BroadcastReceiver() {
+                @Override
+                public void onReceive(Context context, Intent intent) {
+                    String action = intent.getAction();
+                    if (Intent.ACTION_USER_SWITCHED.equals(action)) {
+                        switchUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0));
+                    } else if (Intent.ACTION_USER_REMOVED.equals(action)) {
+                        removeUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0));
+                    }
                 }
-            }
-        }, UserHandle.ALL, intentFilter, null, BackgroundThread.getHandler());
-    }
-
-    private UserState getCurrentUserStateLocked() {
-        return getOrCreateUserStateLocked(mCurrentUserId);
-    }
+            }, UserHandle.ALL, intentFilter, null, BackgroundThread.getHandler());
+        }
 
-    private UserState getOrCreateUserStateLocked(int userId) {
-        UserState userState = mUserStates.get(userId);
-        if (userState == null) {
-            userState = new UserState(mContext, userId, mLock);
-            mUserStates.put(userId, userState);
+        private UserState getCurrentUserStateLocked() {
+            return getOrCreateUserStateLocked(mCurrentUserId);
         }
-        return userState;
-    }
 
-    private void switchUser(int newUserId) {
-        UserState userState;
-        synchronized (mLock) {
-            if (newUserId == mCurrentUserId) {
-                return;
-            }
-            mCurrentUserId = newUserId;
-            userState = mUserStates.get(mCurrentUserId);
+        private UserState getOrCreateUserStateLocked(int userId) {
+            UserState userState = mUserStates.get(userId);
             if (userState == null) {
-                userState = getCurrentUserStateLocked();
-                userState.updateIfNeededLocked();
-            } else {
-                userState.updateIfNeededLocked();
+                userState = new UserState(mContext, userId, mLock);
+                mUserStates.put(userId, userState);
             }
+            return userState;
         }
-        // This is the first time we switch to this user after boot, so
-        // now is the time to remove obsolete print jobs since they
-        // are from the last boot and no application would query them.
-        userState.removeObsoletePrintJobs();
-    }
 
-    private void removeUser(int removedUserId) {
-        synchronized (mLock) {
-            UserState userState = mUserStates.get(removedUserId);
-            if (userState != null) {
-                userState.destroyLocked();
-                mUserStates.remove(removedUserId);
+        private void switchUser(int newUserId) {
+            UserState userState;
+            synchronized (mLock) {
+                if (newUserId == mCurrentUserId) {
+                    return;
+                }
+                mCurrentUserId = newUserId;
+                userState = mUserStates.get(mCurrentUserId);
+                if (userState == null) {
+                    userState = getCurrentUserStateLocked();
+                    userState.updateIfNeededLocked();
+                } else {
+                    userState.updateIfNeededLocked();
+                }
+            }
+            // This is the first time we switch to this user after boot, so
+            // now is the time to remove obsolete print jobs since they
+            // are from the last boot and no application would query them.
+            userState.removeObsoletePrintJobs();
+        }
+
+        private void removeUser(int removedUserId) {
+            synchronized (mLock) {
+                UserState userState = mUserStates.get(removedUserId);
+                if (userState != null) {
+                    userState.destroyLocked();
+                    mUserStates.remove(removedUserId);
+                }
             }
         }
-    }
 
-    private int resolveCallingAppEnforcingPermissions(int appId) {
-        final int callingUid = Binder.getCallingUid();
-        if (callingUid == 0 || callingUid == Process.SYSTEM_UID
-                || callingUid == Process.SHELL_UID) {
-            return appId;
-        }
-        final int callingAppId = UserHandle.getAppId(callingUid);
-        if (appId == callingAppId) {
+        private int resolveCallingAppEnforcingPermissions(int appId) {
+            final int callingUid = Binder.getCallingUid();
+            if (callingUid == 0 || callingUid == Process.SYSTEM_UID
+                    || callingUid == Process.SHELL_UID) {
+                return appId;
+            }
+            final int callingAppId = UserHandle.getAppId(callingUid);
+            if (appId == callingAppId) {
+                return appId;
+            }
+            if (mContext.checkCallingPermission(
+                    "com.android.printspooler.permission.ACCESS_ALL_PRINT_JOBS")
+                    != PackageManager.PERMISSION_GRANTED) {
+                throw new SecurityException("Call from app " + callingAppId + " as app "
+                        + appId + " without com.android.printspooler.permission"
+                        + ".ACCESS_ALL_PRINT_JOBS");
+            }
             return appId;
         }
-        if (mContext.checkCallingPermission(
-                "com.android.printspooler.permission.ACCESS_ALL_PRINT_JOBS")
-                != PackageManager.PERMISSION_GRANTED) {
-            throw new SecurityException("Call from app " + callingAppId + " as app "
-                    + appId + " without com.android.printspooler.permission"
-                    + ".ACCESS_ALL_PRINT_JOBS");
-        }
-        return appId;
-    }
 
-    private int resolveCallingUserEnforcingPermissions(int userId) {
-        final int callingUid = Binder.getCallingUid();
-        if (callingUid == 0 || callingUid == Process.SYSTEM_UID
-                || callingUid == Process.SHELL_UID) {
-            return userId;
-        }
-        final int callingUserId = UserHandle.getUserId(callingUid);
-        if (callingUserId == userId) {
-            return userId;
-        }
-        if (mContext.checkCallingPermission(Manifest.permission.INTERACT_ACROSS_USERS_FULL)
-                != PackageManager.PERMISSION_GRANTED
-            ||  mContext.checkCallingPermission(Manifest.permission.INTERACT_ACROSS_USERS)
-                != PackageManager.PERMISSION_GRANTED) {
-            if (userId == UserHandle.USER_CURRENT_OR_SELF) {
-                return callingUserId;
-            }
-            throw new SecurityException("Call from user " + callingUserId + " as user "
-                + userId + " without permission INTERACT_ACROSS_USERS or "
-                + "INTERACT_ACROSS_USERS_FULL not allowed.");
-        }
-        if (userId == UserHandle.USER_CURRENT || userId == UserHandle.USER_CURRENT_OR_SELF) {
-            return mCurrentUserId;
+        private int resolveCallingUserEnforcingPermissions(int userId) {
+            final int callingUid = Binder.getCallingUid();
+            if (callingUid == 0 || callingUid == Process.SYSTEM_UID
+                    || callingUid == Process.SHELL_UID) {
+                return userId;
+            }
+            final int callingUserId = UserHandle.getUserId(callingUid);
+            if (callingUserId == userId) {
+                return userId;
+            }
+            if (mContext.checkCallingPermission(Manifest.permission.INTERACT_ACROSS_USERS_FULL)
+                    != PackageManager.PERMISSION_GRANTED
+                ||  mContext.checkCallingPermission(Manifest.permission.INTERACT_ACROSS_USERS)
+                    != PackageManager.PERMISSION_GRANTED) {
+                if (userId == UserHandle.USER_CURRENT_OR_SELF) {
+                    return callingUserId;
+                }
+                throw new SecurityException("Call from user " + callingUserId + " as user "
+                    + userId + " without permission INTERACT_ACROSS_USERS or "
+                    + "INTERACT_ACROSS_USERS_FULL not allowed.");
+            }
+            if (userId == UserHandle.USER_CURRENT || userId == UserHandle.USER_CURRENT_OR_SELF) {
+                return mCurrentUserId;
+            }
+            throw new IllegalArgumentException("Calling user can be changed to only "
+                    + "UserHandle.USER_CURRENT or UserHandle.USER_CURRENT_OR_SELF.");
         }
-        throw new IllegalArgumentException("Calling user can be changed to only "
-                + "UserHandle.USER_CURRENT or UserHandle.USER_CURRENT_OR_SELF.");
-    }
 
-    private String resolveCallingPackageNameEnforcingSecurity(String packageName) {
-        if (TextUtils.isEmpty(packageName)) {
-            return null;
-        }
-        String[] packages = mContext.getPackageManager().getPackagesForUid(
-                Binder.getCallingUid());
-        final int packageCount = packages.length;
-        for (int i = 0; i < packageCount; i++) {
-            if (packageName.equals(packages[i])) {
-                return packageName;
+        private String resolveCallingPackageNameEnforcingSecurity(String packageName) {
+            if (TextUtils.isEmpty(packageName)) {
+                return null;
+            }
+            String[] packages = mContext.getPackageManager().getPackagesForUid(
+                    Binder.getCallingUid());
+            final int packageCount = packages.length;
+            for (int i = 0; i < packageCount; i++) {
+                if (packageName.equals(packages[i])) {
+                    return packageName;
+                }
             }
+            return null;
         }
-        return null;
-    }
 
-    private void showEnableInstalledPrintServiceNotification(ComponentName component,
-            String label, int userId) {
-        UserHandle userHandle = new UserHandle(userId);
+        private void showEnableInstalledPrintServiceNotification(ComponentName component,
+                String label, int userId) {
+            UserHandle userHandle = new UserHandle(userId);
 
-        Intent intent = new Intent(Settings.ACTION_PRINT_SETTINGS);
-        intent.putExtra(EXTRA_PRINT_SERVICE_COMPONENT_NAME, component.flattenToString());
+            Intent intent = new Intent(Settings.ACTION_PRINT_SETTINGS);
+            intent.putExtra(EXTRA_PRINT_SERVICE_COMPONENT_NAME, component.flattenToString());
 
-        PendingIntent pendingIntent = PendingIntent.getActivityAsUser(mContext, 0, intent,
-                PendingIntent.FLAG_ONE_SHOT | PendingIntent.FLAG_CANCEL_CURRENT, null, userHandle);
+            PendingIntent pendingIntent = PendingIntent.getActivityAsUser(mContext, 0, intent,
+                    PendingIntent.FLAG_ONE_SHOT | PendingIntent.FLAG_CANCEL_CURRENT, null,
+                    userHandle);
 
-        Notification.Builder builder = new Notification.Builder(mContext)
-                .setSmallIcon(R.drawable.ic_print)
-                .setContentTitle(mContext.getString(R.string.print_service_installed_title, label))
-                .setContentText(mContext.getString(R.string.print_service_installed_message))
-                .setContentIntent(pendingIntent)
-                .setWhen(System.currentTimeMillis())
-                .setAutoCancel(true)
-                .setShowWhen(true);
+            Notification.Builder builder = new Notification.Builder(mContext)
+                    .setSmallIcon(R.drawable.ic_print)
+                    .setContentTitle(mContext.getString(R.string.print_service_installed_title,
+                            label))
+                    .setContentText(mContext.getString(R.string.print_service_installed_message))
+                    .setContentIntent(pendingIntent)
+                    .setWhen(System.currentTimeMillis())
+                    .setAutoCancel(true)
+                    .setShowWhen(true);
 
-        NotificationManager notificationManager = (NotificationManager) mContext
-                .getSystemService(Context.NOTIFICATION_SERVICE);
+            NotificationManager notificationManager = (NotificationManager) mContext
+                    .getSystemService(Context.NOTIFICATION_SERVICE);
 
-        String notificationTag = getClass().getName() + ":" + component.flattenToString();
-        notificationManager.notifyAsUser(notificationTag, 0, builder.build(),
-                userHandle);
+            String notificationTag = getClass().getName() + ":" + component.flattenToString();
+            notificationManager.notifyAsUser(notificationTag, 0, builder.build(),
+                    userHandle);
+        }
     }
 }