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 OHOS_MEMORY_MEMMGR_WINDOW_VISIBILITY_OBSERVER_H
17 #define OHOS_MEMORY_MEMMGR_WINDOW_VISIBILITY_OBSERVER_H
18 
19 #include <sys/types.h>
20 #include <map>
21 #include <mutex>
22 #include <set>
23 
24 #include "event_handler.h"
25 #include "iremote_object.h"
26 #include "i_mem_mgr.h"
27 #include "mem_mgr_window_info.h"
28 #include "reclaim_priority_manager.h"
29 #include "single_instance.h"
30 
31 namespace OHOS {
32 namespace Memory {
33 struct ProcessWindowVisibilityInfo {
34     bool visible;
35     int uid;
36     std::set<uint32_t> visibleWindowIds;
37 };
38 
39 typedef struct ProcessWindowVisibilityInfo ProcessWindowVisibilityInfo;
40 
41 class WindowVisibilityObserver {
42     DECLARE_SINGLE_INSTANCE_BASE(WindowVisibilityObserver);
43 public:
44     void UpdateWindowVisibilityPriority(const std::vector<sptr<MemMgrWindowInfo>> &memMgrWindowInfo);
45     void OnProcessDied(int pid);
46 
47 private:
48     WindowVisibilityObserver();
49     ~WindowVisibilityObserver();
50     std::shared_ptr<AppExecFwk::EventHandler> handler_;
51     std::function<void()> timerFunc_;
52     std::map<int32_t, ProcessWindowVisibilityInfo> windowVisibleMap_;
53     std::mutex mutex_ {};
54 
55     void SetTimer();
56     void CheckMapSize(int type);
57     void UpdatePriorityForVisible(std::map<int32_t, ProcessWindowVisibilityInfo> &windowVisibleMap_);
58     void UpdateWindowVisibilityPriorityInner(const std::vector<sptr<MemMgrWindowInfo>> &MemMgrWindowInfo);
59 };
60 } // namespace Memory
61 } // namespace OHOS
62 #endif // OHOS_MEMORY_MEMMGR_WINDOW_VISIBILITY_H
63