179a732c7Sopenharmony_ci/*
279a732c7Sopenharmony_ci * Copyright (c) 2022-2024 Huawei Device Co., Ltd.
379a732c7Sopenharmony_ci * Licensed under the Apache License, Version 2.0 (the "License");
479a732c7Sopenharmony_ci * you may not use this file except in compliance with the License.
579a732c7Sopenharmony_ci * You may obtain a copy of the License at
679a732c7Sopenharmony_ci *
779a732c7Sopenharmony_ci * http://www.apache.org/licenses/LICENSE-2.0
879a732c7Sopenharmony_ci *
979a732c7Sopenharmony_ci * Unless required by applicable law or agreed to in writing, software
1079a732c7Sopenharmony_ci * distributed under the License is distributed on an "AS IS" BASIS,
1179a732c7Sopenharmony_ci * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
1279a732c7Sopenharmony_ci * See the License for the specific language governing permissions and
1379a732c7Sopenharmony_ci * limitations under the License.
1479a732c7Sopenharmony_ci */
1579a732c7Sopenharmony_ci
1679a732c7Sopenharmony_ci#ifndef OHOS_DM_SINGLE_INSTANCE_H
1779a732c7Sopenharmony_ci#define OHOS_DM_SINGLE_INSTANCE_H
1879a732c7Sopenharmony_ci
1979a732c7Sopenharmony_cinamespace OHOS {
2079a732c7Sopenharmony_cinamespace DistributedHardware {
2179a732c7Sopenharmony_ci#define DM_DECLARE_SINGLE_INSTANCE_BASE(className)       \
2279a732c7Sopenharmony_cipublic:                                               \
2379a732c7Sopenharmony_ci    static className &GetInstance();                  \
2479a732c7Sopenharmony_ci                                                      \
2579a732c7Sopenharmony_ciprivate:                                              \
2679a732c7Sopenharmony_ci    className(const className &) = delete;            \
2779a732c7Sopenharmony_ci    className &operator=(const className &) = delete; \
2879a732c7Sopenharmony_ci    className(className &&) = delete;                 \
2979a732c7Sopenharmony_ci    className &operator=(className &&) = delete;
3079a732c7Sopenharmony_ci
3179a732c7Sopenharmony_ci#define DM_DECLARE_SINGLE_INSTANCE(className)  \
3279a732c7Sopenharmony_ci    DM_DECLARE_SINGLE_INSTANCE_BASE(className) \
3379a732c7Sopenharmony_ci                                            \
3479a732c7Sopenharmony_ciprivate:                                    \
3579a732c7Sopenharmony_ci    className() = default;                  \
3679a732c7Sopenharmony_ci    ~className() = default;
3779a732c7Sopenharmony_ci
3879a732c7Sopenharmony_ci#define DM_IMPLEMENT_SINGLE_INSTANCE(className)    \
3979a732c7Sopenharmony_ci    className &className::GetInstance()         \
4079a732c7Sopenharmony_ci    {                                           \
4179a732c7Sopenharmony_ci        static auto instance = new className(); \
4279a732c7Sopenharmony_ci        return *instance;                       \
4379a732c7Sopenharmony_ci    }
4479a732c7Sopenharmony_ci}; // namespace DistributedHardware
4579a732c7Sopenharmony_ci}; // namespace OHOS
4679a732c7Sopenharmony_ci#endif // OHOS_DM_SINGLE_INSTANCE_H
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