1 /*
2  * Copyright 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 
17 #pragma once
18 
19 #include "pollable.h"
20 #include "result.h"
21 
22 #include <unordered_map>
23 #include <vector>
24 
25 class Command;
26 
27 class Commander : public Pollable {
28 public:
29     Commander();
30     ~Commander();
31 
32     Result init();
33 
34     void registerCommand(const char* commandStr, Command* command);
35 
36     void getPollData(std::vector<pollfd>* fds) const override;
37     Timestamp getTimeout() const override;
38     bool onReadAvailable(int fd, int* status) override;
39     bool onClose(int fd, int* status) override;
40     bool onTimeout(int* status) override;
41 private:
42     void openPipe();
43     void closePipe();
44 
45     int mPipeFd;
46     Pollable::Timestamp mDeadline;
47     std::vector<char> mReceiveBuffer;
48     std::unordered_map<std::string, Command*> mCommands;
49 };
50