1 /*
2  * Copyright (c) 2022 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_EVENT_CENTER_H
17 #define OHOS_MEMORY_MEMMGR_EVENT_CENTER_H
18 
19 #include "account_observer.h"
20 #include "common_event_observer.h"
21 #include "event_handler.h"
22 #include "extension_connection_observer.h"
23 #include "kswapd_observer.h"
24 #include "memory_pressure_observer.h"
25 #include "single_instance.h"
26 #ifdef CONFIG_BGTASK_MGR
27 #include "bg_task_observer.h"
28 #endif
29 #include "app_mgr_client.h"
30 #include "app_mgr_interface.h"
31 #include "app_process_data.h"
32 #include "app_state_observer.h"
33 #include "iservice_registry.h"
34 #include "system_ability_definition.h"
35 
36 namespace OHOS {
37 namespace Memory {
38     enum RegisterEvent : int64_t {
39         REG_ALLOBS_EVENT = 0,
40         REG_MEMPRESSOBS_EVENT,
41         REG_APPOBS_EVENT,
42         REG_EXTOBS_EVENT,
43         REG_ACCOUNTOBS_EVENT,
44         REG_COMMONOBS_EVENT,
45         REG_BGTASKOBS_EVENT,
46     };
47 
48 class MemMgrEventCenter {
49     DECLARE_SINGLE_INSTANCE_BASE(MemMgrEventCenter);
50 
51 public:
52     ~MemMgrEventCenter();
53     bool Init();
54     void RetryRegisterEventObserver(int32_t systemAbilityId);
55     void Dump(int fd);
56     void RemoveEventObserver(int32_t systemAbilityId);
57     void OnProcessDied(int pid);
58     void OnExtensionServiceDied();
59 
60 private:
61     MemMgrEventCenter();
62     bool CreateRegisterHandler();
63     void UnregisterEventObserver();
64     bool RegisterEventObserver();
65     void RegisterBgTaskObserver();
66     void RegisterAccountObserver();
67     void RegisterExtConnObserver();
68     void RegisterAppStateObserver();
69     void RegisterCommonEventObserver();
70     void RegisterMemoryPressureObserver();
71     void RegisterKswapdObserver();
72     void HandlerRegisterEvent(int64_t registerEventId);
73     int regAccountObsRetry_ = 0;
74     int regAppStatusObsRetry_ = 0;
75     std::unique_ptr<AppExecFwk::AppMgrClient> appMgrClient_;
76     std::shared_ptr<AppExecFwk::EventHandler> regObsHandler_;
77     std::shared_ptr<ExtensionConnectionObserver> extConnObserver_;
78     std::shared_ptr<AccountObserver> accountObserver_;
79     std::shared_ptr<CommonEventObserver> commonEventObserver_;
80 #ifdef CONFIG_BGTASK_MGR
81     std::shared_ptr<BgTaskObserver> bgTaskObserver_;
82 #endif
83     std::shared_ptr<MemoryPressureObserver> memoryPressureObserver_;
84     std::shared_ptr<KswapdObserver> kswapdObserver_;
85     sptr<AppStateObserver> appStateObserver_;
86 };
87 } // namespace Memory
88 } // namespace OHOS
89 #endif // OHOS_MEMORY_MEMMGR_EVENT_CENTER_H
90