/**
 * @file
 * @brief Atomic mutex implementation.
 *
 * Configuration:
 *     STA_STDLIB_HAS_ATOMIC: Enable module
 */
#ifndef STA_CORE_ATOMIC_MUTEX_HPP
#define STA_CORE_ATOMIC_MUTEX_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/mutex.hpp>

#include <atomic>


namespace sta
{
	/**
	 * @brief Implementation of `Mutex` interface using `std::atomic_flag`.
	 */
	class AtomicMutex : public Mutex
	{
	public:
		AtomicMutex();

		void acquire() override;
		void release() override;

	private:
		std::atomic_flag lock_; /**< Atomic flag used as lock */
	};
} // namespace sta


#endif // STA_ATOMIC_ENABLED

#endif // STA_CORE_ATOMIC_MUTEX_HPP