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 FOUNDATION_RESOURCESCHEDULE_STANDBY_SERVICE_UTILS_SINGLE_INSTANCE_H
17 #define FOUNDATION_RESOURCESCHEDULE_STANDBY_SERVICE_UTILS_SINGLE_INSTANCE_H
18 
19 #include <memory>
20 #include "singleton.h"
21 
22 namespace OHOS {
23 namespace DevStandbyMgr {
24 #define DECLARE_SINGLE_INSTANCE_BASE(className)       \
25 public:                                               \
26     static std::shared_ptr<className> GetInstance();  \
27 private:                                              \
28     className(const className&) = delete;             \
29     className& operator= (const className&) = delete; \
30     className(className&&) = delete;                  \
31     className& operator= (className&&) = delete;      \
32 
33 #define DECLARE_SINGLE_INSTANCE(className)  \
34     DECLARE_DELAYED_SINGLETON(className)    \
35     DECLARE_SINGLE_INSTANCE_BASE(className) \
36 
37 #define IMPLEMENT_SINGLE_INSTANCE(className)                 \
38 std::shared_ptr<className> className::GetInstance()          \
39 {                                                            \
40     return DelayedSingleton<className>::GetInstance();       \
41 }
42 } // namespace DevStandbyMgr
43 } // namespace OHOS
44 #endif // FOUNDATION_RESOURCESCHEDULE_STANDBY_SERVICE_UTILS_SINGLE_INSTANCE_H
45