1/*
2 * Copyright (c) 2021-2022 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_WM_SINGLE_INSTANCE_H
17#define OHOS_WM_SINGLE_INSTANCE_H
18namespace OHOS {
19namespace Rosen {
20#define WM_DECLARE_SINGLE_INSTANCE_BASE(className)          \
21public:                                                     \
22    static className& GetInstance();                        \
23    className(const className&) = delete;                   \
24    className& operator= (const className&) = delete;       \
25    className(className&&) = delete;                        \
26    className& operator= (className&&) = delete;            \
27
28#define WM_DECLARE_SINGLE_INSTANCE(className)  \
29    WM_DECLARE_SINGLE_INSTANCE_BASE(className) \
30protected:                                     \
31    className() = default;                     \
32    virtual ~className() = default;            \
33
34#define WM_IMPLEMENT_SINGLE_INSTANCE(className) \
35className& className::GetInstance()             \
36{                                               \
37    static className instance;                  \
38    return instance;                            \
39}                                               \
40
41} // namespace OHOS
42}
43#endif // OHOS_SINGLE_INSTANCE_H
44