1 /*
2  * Copyright (C) 2019 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 /**
20  * @hide
21  */
22 oneway interface IClientCallback {
23     /**
24      * This is called when there is a transition between having >= 1 clients and having 0 clients
25      * (or vice versa).
26      *
27      * Upon receiving hasClients false, if the process decides to exit, it is recommended to try to
28      * unregister using IServiceManager's tryUnregister before quitting in case another client
29      * associates.
30      *
31      * @param registered binder 'server' registered with IServiceManager's registerClientCallback
32      * @param hasClients whether there are currently clients
33      *     true - when there are >= 1 clients. This must be called as soon as IServiceManager::get
34      *         is called (no race).
35      *     false - when there are 0 clients. This may be delayed if it is thought that another
36      *         may be used again soon.
37      */
onClients(IBinder registered, boolean hasClients)38     void onClients(IBinder registered, boolean hasClients);
39 }
40