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_FORM_FWK_MEM_STATUS_LISTENER
17 #define OHOS_FORM_FWK_MEM_STATUS_LISTENER
18 
19 #ifdef MEM_MGR_ENABLE
20 
21 #include "app_state_subscriber.h"
22 
23 namespace OHOS {
24 namespace AppExecFwk {
25 /**
26  * @class MemStatusListener
27  * Monitor system memory changes.
28  */
29 class MemStatusListener : public Memory::AppStateSubscriber {
30 public:
31     void OnConnected() override;
32     void OnTrim(Memory::SystemMemoryLevel level) override;
33     void OnRemoteDied(const wptr<IRemoteObject> &object) override;
34     void ForceReclaim(int32_t pid, int32_t uid) override;
35 };
36 }
37 }
38 #endif // MEM_MGR_ENABLE
39 #endif // OHOS_FORM_FWK_MEM_STATUS_LISTENER