mirror of https://github.com/pvnis/srsRAN_4G.git
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
56 lines
1.6 KiB
C++
56 lines
1.6 KiB
C++
/**
|
|
* Copyright 2013-2021 Software Radio Systems Limited
|
|
*
|
|
* This file is part of srsLTE.
|
|
*
|
|
* srsLTE is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as
|
|
* published by the Free Software Foundation, either version 3 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* srsLTE is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* A copy of the GNU Affero General Public License can be found in
|
|
* the LICENSE file in the top-level directory of this distribution
|
|
* and at http://www.gnu.org/licenses/.
|
|
*
|
|
*/
|
|
|
|
#ifndef SRSRAN_SINGLETON_H
|
|
#define SRSRAN_SINGLETON_H
|
|
|
|
#include <memory>
|
|
|
|
// CRTP pattern to create class singletons
|
|
template <typename T>
|
|
class singleton_t
|
|
{
|
|
public:
|
|
singleton_t(const singleton_t<T>&) = delete;
|
|
singleton_t(singleton_t<T>&&) = delete;
|
|
singleton_t& operator=(const singleton_t<T>&) = delete;
|
|
singleton_t& operator=(singleton_t<T>&&) = delete;
|
|
|
|
static T* get_instance()
|
|
{
|
|
// this variable initialization is thread-safe since C++11
|
|
// instance dtor is called on program exit
|
|
static std::unique_ptr<T> instance{new T_instance{}};
|
|
return instance.get();
|
|
}
|
|
|
|
protected:
|
|
singleton_t() = default;
|
|
|
|
private:
|
|
// this class makes the protected T::T() accessible to the singleton
|
|
struct T_instance : public T {
|
|
T_instance() : T() {}
|
|
};
|
|
};
|
|
|
|
#endif // SRSRAN_SINGLETON_H
|