/* -------------------------------------------------------------------------
 *  This file is part of the MindStudio project.
 * Copyright (c) 2025 Huawei Technologies Co.,Ltd.
 *
 * MindStudio is licensed under Mulan PSL v2.
 * You can use this software according to the terms and conditions of the Mulan PSL v2.
 * You may obtain a copy of Mulan PSL v2 at:
 *
 *          http://license.coscl.org.cn/MulanPSL2
 *
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PSL v2 for more details.
 * ------------------------------------------------------------------------- */


#ifndef __MSOPPROF_CPPUTILS_SINGLETON_H__
#define __MSOPPROF_CPPUTILS_SINGLETON_H__

template<class T>
class Singleton {
public:
    static T &Instance()
    {
        static T value;
        return value;
    }

protected:
    Singleton() = default;                    // ctor hidden
    Singleton(Singleton const &);             // copy ctor hidden
    Singleton &operator=(Singleton const &);  // assign op. hidden
    virtual ~Singleton() {}  // dtor hidden
};

#endif // __MSOPPROF_CPPUTILS_SINGLETON_H__