/**
 * @file
 * @brief Mutex interface definition.
 */
#ifndef STA_CORE_MUTEX_HPP
#define STA_CORE_MUTEX_HPP

#include <mutex>


namespace sta
{
	/**
	 * @brief Hippity hoppity, this is now namespace sta's property.
	 */
	using std::lock_guard;

    /**
     * @brief Interface for mutex objects.
     *
     * @ingroup sta_core
     */
    class Mutex
    {
    public:
        /**
         * @brief Block until mutex has been acquired.
         */
        virtual void acquire() = 0;
        /**
         * @brief Release mutex.
         */
        virtual void release() = 0;

        /**
         * @brief Identical to acquire(). Added for compatibility with std::lock_guard.
         */
        void lock();

        /**
		 * @brief Identical to release(). Added for compatibility with std::lock_guard.
		 */
        void unlock();

        static Mutex * ALWAYS_FREE; /**< Fake mutex that can always be acquired */
    };
} // namespace sta


#endif // STA_CORE_MUTEX_HPP