1 /*
2  * Copyright (C) 2024 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 ANDROID_LIBPERFMGR_EVENTNODE_H_
18 #define ANDROID_LIBPERFMGR_EVENTNODE_H_
19 
20 #include <cstddef>
21 #include <string>
22 #include <vector>
23 
24 #include "perfmgr/Node.h"
25 
26 namespace android {
27 namespace perfmgr {
28 
29 // EventNode represents to handle events by callback function.
30 class EventNode : public Node {
31   public:
32     EventNode(std::string name, std::string node_path, std::vector<RequestGroup> req_sorted,
33               std::size_t default_val_index, bool reset_on_init,
34               std::function<void(const std::string &, const std::string &, const std::string &)>
35                       update_callback);
36 
37     std::chrono::milliseconds Update(bool log_error) override;
38     void DumpToFd(int fd) const override;
39 
40   private:
41     EventNode(const Node &other) = delete;
42     EventNode &operator=(Node const &) = delete;
43     const std::function<void(const std::string &name, const std::string &path,
44                              const std::string &value)>
45             update_callback_;
46 };
47 
48 }  // namespace perfmgr
49 }  // namespace android
50 
51 #endif  // ANDROID_LIBPERFMGR_EVENTNODE_H_
52