/**
 * @file
 * @brief Atomic signal implementation.
 *
 * Configuration:
 *     STA_STDLIB_HAS_ATOMIC: Enable module
 */
#ifndef STA_CORE_ATOMIC_SIGNAL_HPP
#define STA_CORE_ATOMIC_SIGNAL_HPP


#include <sta/config.hpp>
#ifdef STA_STDLIB_HAS_ATOMIC
#  define STA_ATOMIC_ENABLED
#endif // STA_STDLIB_HAS_ATOMIC


#if defined(STA_ATOMIC_ENABLED) || defined(DOXYGEN)

#include <sta/signal.hpp>

#include <atomic>


namespace sta
{
    /**
     * @brief Implementation of `Signal` interface using `std::atomic`.
     */
    class AtomicSignal : public Signal
    {
    public:
        AtomicSignal();

        void notify() override;
        bool peek() override;
        bool test() override;
        void wait() override;

    private:
        std::atomic<bool> signal_;  /**< Atomic bool used as signal */
    };
} // namespace sta


#endif // STA_ATOMIC_ENABLED

#endif // STA_CORE_ATOMIC_SIGNAL_HPP