1 /*
2  * Copyright (c) 2024 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 WINDOW_WINDOW_MANAGER_SCREEN_CACHE_H
17 #define WINDOW_WINDOW_MANAGER_SCREEN_CACHE_H
18 
19 #include <unordered_map>
20 #include <list>
21 #include <mutex>
22 
23 namespace OHOS::Rosen {
24 class ScreenCache {
25 public:
26     ScreenCache(size_t capacity, int32_t errorCode);
27     void Set(int32_t key, int32_t value);
28     int32_t Get(int32_t key);
29 
30 private:
31     std::unordered_map<int32_t, int32_t> Map_;
32     std::list<int32_t> accessOrder_;
33     const size_t capacity_;
34     const int32_t errorCode_;
35     std::mutex mtx_;
36 };
37 } // namespace OHOS::Rosen
38 #endif // WINDOW_WINDOW_MANAGER_SCREEN_CACHE_H