1 /*
2  * Copyright (C) 2015 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 #define LOG_TAG "ResultReceiver"
18 
19 #include <binder/IResultReceiver.h>
20 
21 #include <utils/Log.h>
22 #include <binder/Parcel.h>
23 #include <utils/String8.h>
24 
25 namespace android {
26 
27 // ----------------------------------------------------------------------
28 
29 class BpResultReceiver : public BpInterface<IResultReceiver>
30 {
31 public:
BpResultReceiver(const sp<IBinder> & impl)32     explicit BpResultReceiver(const sp<IBinder>& impl)
33         : BpInterface<IResultReceiver>(impl)
34     {
35     }
36 
send(int32_t resultCode)37     virtual void send(int32_t resultCode) {
38         Parcel data;
39         data.writeInterfaceToken(IResultReceiver::getInterfaceDescriptor());
40         data.writeInt32(resultCode);
41         remote()->transact(OP_SEND, data, nullptr, IBinder::FLAG_ONEWAY);
42     }
43 };
44 
45 IMPLEMENT_META_INTERFACE(ResultReceiver, "com.android.internal.os.IResultReceiver")
46 
47 // ----------------------------------------------------------------------
48 
49 // NOLINTNEXTLINE(google-default-arguments)
50 status_t BnResultReceiver::onTransact(
51     uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
52 {
53     switch(code) {
54         case OP_SEND: {
55             CHECK_INTERFACE(IResultReceiver, data, reply);
56             int32_t resultCode = data.readInt32();
57             send(resultCode);
58             if (reply != nullptr) {
59                 reply->writeNoException();
60             }
61             return NO_ERROR;
62         } break;
63         default:
64             return BBinder::onTransact(code, data, reply, flags);
65     }
66 }
67 
68 } // namespace android
69