| /* |
| * Copyright (C) 2006 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.os; |
| |
| import android.annotation.UnsupportedAppUsage; |
| |
| import java.util.ArrayList; |
| |
| /** |
| * Native implementation of the service manager. Most clients will only |
| * care about asInterface(). |
| * |
| * @hide |
| */ |
| public final class ServiceManagerNative { |
| private ServiceManagerNative() {} |
| |
| /** |
| * Cast a Binder object into a service manager interface, generating |
| * a proxy if needed. |
| */ |
| @UnsupportedAppUsage |
| static public IServiceManager asInterface(IBinder obj) |
| { |
| if (obj == null) { |
| return null; |
| } |
| IServiceManager in = |
| (IServiceManager) obj.queryLocalInterface(IServiceManager.descriptor); |
| if (in != null) { |
| return in; |
| } |
| |
| return new ServiceManagerProxy(obj); |
| } |
| } |
| |
| class ServiceManagerProxy implements IServiceManager { |
| public ServiceManagerProxy(IBinder remote) { |
| mRemote = remote; |
| } |
| |
| public IBinder asBinder() { |
| return mRemote; |
| } |
| |
| @UnsupportedAppUsage |
| public IBinder getService(String name) throws RemoteException { |
| Parcel data = Parcel.obtain(); |
| Parcel reply = Parcel.obtain(); |
| data.writeInterfaceToken(IServiceManager.descriptor); |
| data.writeString(name); |
| mRemote.transact(GET_SERVICE_TRANSACTION, data, reply, 0); |
| IBinder binder = reply.readStrongBinder(); |
| reply.recycle(); |
| data.recycle(); |
| return binder; |
| } |
| |
| public IBinder checkService(String name) throws RemoteException { |
| Parcel data = Parcel.obtain(); |
| Parcel reply = Parcel.obtain(); |
| data.writeInterfaceToken(IServiceManager.descriptor); |
| data.writeString(name); |
| mRemote.transact(CHECK_SERVICE_TRANSACTION, data, reply, 0); |
| IBinder binder = reply.readStrongBinder(); |
| reply.recycle(); |
| data.recycle(); |
| return binder; |
| } |
| |
| public void addService(String name, IBinder service, boolean allowIsolated, int dumpPriority) |
| throws RemoteException { |
| Parcel data = Parcel.obtain(); |
| Parcel reply = Parcel.obtain(); |
| data.writeInterfaceToken(IServiceManager.descriptor); |
| data.writeString(name); |
| data.writeStrongBinder(service); |
| data.writeInt(allowIsolated ? 1 : 0); |
| data.writeInt(dumpPriority); |
| mRemote.transact(ADD_SERVICE_TRANSACTION, data, reply, 0); |
| reply.recycle(); |
| data.recycle(); |
| } |
| |
| public String[] listServices(int dumpPriority) throws RemoteException { |
| ArrayList<String> services = new ArrayList<String>(); |
| int n = 0; |
| while (true) { |
| Parcel data = Parcel.obtain(); |
| Parcel reply = Parcel.obtain(); |
| data.writeInterfaceToken(IServiceManager.descriptor); |
| data.writeInt(n); |
| data.writeInt(dumpPriority); |
| n++; |
| try { |
| boolean res = mRemote.transact(LIST_SERVICES_TRANSACTION, data, reply, 0); |
| if (!res) { |
| break; |
| } |
| } catch (RuntimeException e) { |
| // The result code that is returned by the C++ code can |
| // cause the call to throw an exception back instead of |
| // returning a nice result... so eat it here and go on. |
| break; |
| } |
| services.add(reply.readString()); |
| reply.recycle(); |
| data.recycle(); |
| } |
| String[] array = new String[services.size()]; |
| services.toArray(array); |
| return array; |
| } |
| |
| @UnsupportedAppUsage |
| private IBinder mRemote; |
| } |