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#ifndef ATOMIC_TIME_POINT_HH_
#define ATOMIC_TIME_POINT_HH_
#include <atomic>
#include <chrono>
// The purpose of this class is to provide a simple time point which may be read
// from atomically and without locks.
namespace low_latency {
class AtomicTimePoint final {
private:
std::atomic<std::int64_t> count{};
static_assert(decltype(count)::is_always_lock_free);
public:
AtomicTimePoint();
AtomicTimePoint(const AtomicTimePoint&) = delete;
AtomicTimePoint(AtomicTimePoint&&) = delete;
AtomicTimePoint operator=(const AtomicTimePoint&) = delete;
AtomicTimePoint operator=(AtomicTimePoint&&) = delete;
~AtomicTimePoint();
public:
bool has_value() const;
std::chrono::steady_clock::time_point get() const;
void set(const std::chrono::steady_clock::time_point target);
};
} // namespace low_latency
#endif
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