1/* 2 * Copyright (C) 2018 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 17package android.hidl.manager@1.2; 18 19interface IClientCallback { 20 /** 21 * This is called when there is a transition between having >= 1 clients and having 0 clients 22 * (or vice versa). 23 * 24 * Upon receiving hasClients false, if the process decides to exit, it is recommended to try to 25 * unregister using @1.2::IServiceManager's tryUnregister before quiting in case another client 26 * associates. 27 * 28 * @param registered binder 'server' registered with IServiceManager's registerClientCallback 29 * @param hasClients whether there are currently clients 30 * true - when there are >= 1 clients. This must be called as soon as IServiceManager::get 31 * is called (no race). 32 * false - when there are 0 clients. This may be delayed if it is thought that another 33 * may be used again soon. 34 */ 35 oneway onClients(interface registered, bool hasClients); 36}; 37