AtomicSharedPtr.h

#pragma once
 
#include <atomic>
#include <memory>
 
namespace marenv
{
template<typename T>
class AtomicSharedPtr
{
public:
    [[nodiscard]] std::shared_ptr<T> load() const
    {
#if defined(__cpp_lib_atomic_shared_ptr)
        return m_ptr.load();
#else
#    pragma clang diagnostic push
#    pragma clang diagnostic ignored "-Wdeprecated-declarations"
        return std::atomic_load(&m_ptr);
#    pragma clang diagnostic pop
#endif
    }
 
    void store(std::shared_ptr<T> ptr)
    {
#if defined(__cpp_lib_atomic_shared_ptr)
        m_ptr.store(std::move(ptr));
#else
#    pragma clang diagnostic push
#    pragma clang diagnostic ignored "-Wdeprecated-declarations"
        std::atomic_store(&m_ptr, std::move(ptr));
#    pragma clang diagnostic pop
#endif
    }
 
private:
#if defined(__cpp_lib_atomic_shared_ptr)
    std::atomic<std::shared_ptr<T>> m_ptr;
#else
    std::shared_ptr<T> m_ptr;
#endif
};
} // namespace marenv