singleton.hpp

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#pragma once
 
namespace condy {
 
template <typename T> class ThreadLocalSingleton {
public:
    ThreadLocalSingleton() = default;
    ThreadLocalSingleton(const ThreadLocalSingleton &) = delete;
    ThreadLocalSingleton &operator=(const ThreadLocalSingleton &) = delete;
    ThreadLocalSingleton(ThreadLocalSingleton &&) = delete;
    ThreadLocalSingleton &operator=(ThreadLocalSingleton &&) = delete;
 
    static T &current() {
        static thread_local T instance;
        return instance;
    }
};
 
} // namespace condy