48 lines
1.8 KiB
C
48 lines
1.8 KiB
C
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/*
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* Copyright (c) 2023 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef OHOS_EDM_SINGLE_INSTANCE_H
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#define OHOS_EDM_SINGLE_INSTANCE_H
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namespace OHOS {
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namespace ExternalDeviceManager {
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#define DECLARE_SINGLE_INSTANCE_BASE(className) \
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public: \
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static className &GetInstance(); \
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\
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private: \
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className(const className &) = delete; \
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className &operator=(const className &) = delete; \
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className(className &&) = delete; \
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className &operator=(className &&) = delete;
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#define DECLARE_SINGLE_INSTANCE(className) \
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DECLARE_SINGLE_INSTANCE_BASE(className) \
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\
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private: \
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className() = default; \
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~className() = default;
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// please remeber release instance
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#define IMPLEMENT_SINGLE_INSTANCE(className) \
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className &className::GetInstance() \
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{ \
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static auto instance = new className(); \
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return *instance; \
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}
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}; // namespace ExternalDeviceManager
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}; // namespace OHOS
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#endif
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