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 UTIL_SINGLETON_H
17#define UTIL_SINGLETON_H
18
19#include "cb_func.h"
20namespace ffrt {
21template <typename T>
22class SingletonRegister {
23public:
24    static SingletonRegister<T> &Instance_()
25    {
26        static SingletonRegister<T> ins;
27        return ins;
28    }
29
30    static T &Instance()
31    {
32        return Instance_().cb_();
33    }
34
35    static void RegistInsCb(typename SingleInsCB<T>::Instance &&cb)
36    {
37        Instance_().cb_ = std::move(cb);
38    }
39
40private:
41    typename SingleInsCB<T>::Instance cb_;
42};
43} // namespace ffrt
44#endif