/**
 * @file
 * @brief Signal interface definition.
 */
#ifndef STA_CORE_SIGNAL_HPP
#define STA_CORE_SIGNAL_HPP


namespace sta
{
    /**
     * @brief Interface for signal objects.
     *
     * @ingroup sta_core
     */
    class Signal
    {
    public:
        /**
         * @brief Enter signaled state.
         */
        virtual void notify() = 0;
        /**
         * @brief Check signal state w/o changing it.
         *
         * @return True if in signaled state
         */
        virtual bool peek() = 0;
        /**
         * @brief Check signal state.
         *
         * @return True if in signaled state
         */
        virtual bool test() = 0;
        /**
         * @brief Wait until signaled state is entered.
         */
        virtual void wait() = 0;
    };
} // namespace sta


#endif // STA_CORE_SIGNAL_HPP