#pragma once
#include "frame_result.hpp"
#include <atomic>
#include <stdexcept>

namespace cms {
// One immutable result variable. Readers neither remove nor acknowledge results.
class LatestResult {
public:
    void publish(FrameResultPtr result) {
        if(!result)throw std::invalid_argument("Cannot publish a null result");
        std::atomic_store_explicit(&latest_,std::move(result),std::memory_order_release);
    }
    FrameResultPtr load() const {
        return std::atomic_load_explicit(&latest_,std::memory_order_acquire);
    }
private:
    FrameResultPtr latest_;
};
}