1 /*
2  * Copyright (c) 2023 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef PREFERENCES_FILE_LOCK_H
17 #define PREFERENCES_FILE_LOCK_H
18 
19 #include <chrono>
20 #include <map>
21 #include <memory>
22 #include <mutex>
23 #include <string>
24 
25 #include "preferences_errno.h"
26 namespace OHOS {
27 namespace NativePreferences {
28 
29 class PreferencesLockManager {
30 public:
31     static std::shared_ptr<std::mutex> Get(const std::string fileName);
32 private:
33     static std::map<std::string, std::shared_ptr<std::mutex>> inProcessMutexs_;
34     static std::mutex mapMutex_;
35 };
36 class PreferencesFileLock final {
37 public:
38     PreferencesFileLock(const std::string &path, const std::string &dataGroupId);
39     ~PreferencesFileLock();
40 
41 private:
42     int fd_{ -1 };
43     std::shared_ptr<std::mutex> inProcessMutex_;
44 };
45 } // namespace NativePreferences
46 } // namespace OHOS
47 #endif