1 /*
2  * Copyright (C) 2010 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 #ifndef A_LOOPER_ROSTER_H_
18 
19 #define A_LOOPER_ROSTER_H_
20 
21 #include <media/stagefright/foundation/ALooper.h>
22 #include <utils/KeyedVector.h>
23 #include <utils/String16.h>
24 
25 namespace android {
26 
27 struct ALooperRoster {
28     ALooperRoster();
29 
30     ALooper::handler_id registerHandler(
31             const sp<ALooper> looper, const sp<AHandler> &handler);
32 
33     void unregisterHandler(ALooper::handler_id handlerID);
34     void unregisterStaleHandlers();
35 
36     void dump(int fd, const Vector<String16>& args);
37 
38 private:
39     struct HandlerInfo {
40         wp<ALooper> mLooper;
41         wp<AHandler> mHandler;
42     };
43 
44     Mutex mLock;
45     KeyedVector<ALooper::handler_id, HandlerInfo> mHandlers;
46     ALooper::handler_id mNextHandlerID;
47 
48     DISALLOW_EVIL_CONSTRUCTORS(ALooperRoster);
49 };
50 
51 }  // namespace android
52 
53 #endif  // A_LOOPER_ROSTER_H_
54