singleton.h

/*
 * Copyright (c) 2017-2019 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#pragma once
 
#include <hicn/transport/utils/noncopyable.h>
 
namespace utils {
 
template <typename T>
class Singleton : NonCopyable {
 public:
  static T& getInstance() {
    static T instance;
    return instance;
  }
 
 protected:
  Singleton() {}
  ~Singleton() {}
};
 
}  // namespace utils