1 /*
2  * Copyright (C) 2017 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 specic language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef ANDROID_LIBPERFMGR_FILENODE_H_
18 #define ANDROID_LIBPERFMGR_FILENODE_H_
19 
20 #include <android-base/unique_fd.h>
21 
22 #include <cstddef>
23 #include <string>
24 #include <vector>
25 
26 #include "perfmgr/Node.h"
27 
28 namespace android {
29 namespace perfmgr {
30 
31 // FileNode represents file
32 class FileNode : public Node {
33   public:
34     FileNode(std::string name, std::string node_path,
35              std::vector<RequestGroup> req_sorted, std::size_t default_val_index,
36              bool reset_on_init, bool hold_fd = false);
37 
38     std::chrono::milliseconds Update(bool log_error) override;
39 
40     bool GetHoldFd() const;
41 
42     void DumpToFd(int fd) const override;
43 
44   private:
45     FileNode(const Node& other) = delete;
46     FileNode& operator=(Node const&) = delete;
47 
48     const bool hold_fd_;
49     const std::chrono::milliseconds warn_timeout_;
50     android::base::unique_fd fd_;
51 };
52 
53 }  // namespace perfmgr
54 }  // namespace android
55 
56 #endif  // ANDROID_LIBPERFMGR_FILENODE_H_
57