1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.os; 18 19 import android.annotation.SystemApi; 20 import android.annotation.TestApi; 21 22 /** @hide */ 23 @SystemApi 24 @TestApi 25 public interface IHwBinder { 26 /** 27 * Process a hwbinder transaction. 28 * 29 * @param code interface specific code for interface. 30 * @param request parceled transaction 31 * @param reply object to parcel reply into 32 * @param flags transaction flags to be chosen by wire protocol 33 */ transact( int code, HwParcel request, HwParcel reply, int flags)34 public void transact( 35 int code, HwParcel request, HwParcel reply, int flags) 36 throws RemoteException; 37 38 /** 39 * Return as IHwInterface instance only if this implements descriptor. 40 * 41 * @param descriptor for example foo.bar@1.0::IBaz 42 */ queryLocalInterface(String descriptor)43 public IHwInterface queryLocalInterface(String descriptor); 44 45 /** 46 * Interface for receiving a callback when the process hosting a service 47 * has gone away. 48 */ 49 public interface DeathRecipient { 50 /** 51 * Callback for a registered process dying. 52 * 53 * @param cookie cookie this death recipient was registered with. 54 */ serviceDied(long cookie)55 public void serviceDied(long cookie); 56 } 57 58 /** 59 * Notifies the death recipient with the cookie when the process containing 60 * this binder dies. 61 * 62 * @param recipient callback object to be called on object death. 63 * @param cookie value to be given to callback on object death. 64 */ linkToDeath(DeathRecipient recipient, long cookie)65 public boolean linkToDeath(DeathRecipient recipient, long cookie); 66 /** 67 * Unregisters the death recipient from this binder. 68 * 69 * @param recipient callback to no longer recieve death notifications on this binder. 70 */ unlinkToDeath(DeathRecipient recipient)71 public boolean unlinkToDeath(DeathRecipient recipient); 72 } 73