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/**
* This file is part of GPGFrontend.
*
* GPGFrontend is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Foobar 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Foobar. If not, see <https://www.gnu.org/licenses/>.
*
* The initial version of the source code is inherited from gpg4usb-team.
* Their source code version also complies with GNU General Public License.
*
* The source code version of this software was modified and released
* by Saturneric<[email protected]> starting on May 12, 2021.
*
*/
#ifndef GPGFRONTEND_ZH_CN_TS_FUNCTIONOBJECT_H
#define GPGFRONTEND_ZH_CN_TS_FUNCTIONOBJECT_H
#include <memory>
#include <mutex>
#include <easyloggingpp/easylogging++.h>
namespace GpgFrontend {
template <typename T> class SingletonFunctionObject {
public:
static T &GetInstance() {
LOG(INFO) << "SingletonFunctionObject GetInstance Calling "
<< typeid(T).name();
std::lock_guard<std::mutex> guard(_instance_mutex);
if (_instance == nullptr)
_instance = std::make_unique<T>();
return *_instance;
}
SingletonFunctionObject(T &&) = delete;
SingletonFunctionObject(const T &) = delete;
void operator=(const T &) = delete;
protected:
SingletonFunctionObject() = default;
virtual ~SingletonFunctionObject() = default;
private:
static std::mutex _instance_mutex;
static std::unique_ptr<T> _instance;
};
template <typename T> std::mutex SingletonFunctionObject<T>::_instance_mutex;
template <typename T>
std::unique_ptr<T> SingletonFunctionObject<T>::_instance = nullptr;
} // namespace GpgFrontend
#endif // GPGFRONTEND_ZH_CN_TS_FUNCTIONOBJECT_H
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