PassiveTimer.h

/*
 * Copyright (c) 2015 Pavel Vainerman.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, version 2.1.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Lesser Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
// --------------------------------------------------------------------------
//----------------------------------------------------------------------------
# ifndef PASSIVETIMER_H_
# define PASSIVETIMER_H_
//----------------------------------------------------------------------------
#include <signal.h>
#include <condition_variable>
#include <thread>
#include <mutex>
#include <atomic>
#include <chrono>
#include <limits>
#include <Poco/Timespan.h>
#include "Mutex.h"
//----------------------------------------------------------------------------------------
namespace uniset
{
    //----------------------------------------------------------------------------------------
    typedef Poco::Timespan::TimeDiff timeout_t;
    //----------------------------------------------------------------------------------------
    class UniSetTimer
    {
        public:
            virtual ~UniSetTimer() {}
 
            virtual bool checkTime() const noexcept = 0;                
            virtual timeout_t setTiming( timeout_t msec ) noexcept = 0; 
            virtual void reset() noexcept = 0;                          
            virtual timeout_t getCurrent() const noexcept = 0;  
            virtual timeout_t getInterval() const noexcept = 0; 
            timeout_t getLeft( timeout_t timeout ) const noexcept;   
            // объявлены не чисто виртуальными т.к.
            // некоторые классы могут не иметь подобных
            // свойств.
            virtual bool wait(timeout_t timeMS);   
            virtual void terminate() {}           
            virtual void stop() noexcept;
 
            static const timeout_t WaitUpTime = std::numeric_limits<timeout_t>::max();
 
            // преобразование в Poco::Timespan с учётом WaitUpTime
            static const Poco::Timespan millisecToPoco( const timeout_t msec ) noexcept;
            static const Poco::Timespan microsecToPoco( const timeout_t usec ) noexcept;
 
            static const timeout_t MinQuantityTime = 10;
    };
    //----------------------------------------------------------------------------------------
    class PassiveTimer:
        public UniSetTimer
    {
        public:
            PassiveTimer() noexcept;
            PassiveTimer( timeout_t msec ) noexcept; 
            virtual ~PassiveTimer() noexcept;
 
            virtual bool checkTime() const noexcept override; 
            virtual timeout_t setTiming( timeout_t msec ) noexcept override;     
            virtual void reset() noexcept override; 
            virtual timeout_t getCurrent() const noexcept override;  
            virtual timeout_t getInterval() const noexcept override;
 
            virtual void terminate() noexcept override; 
        protected:
            timeout_t t_msec = { 0 };  
            // Т.к. НЕ ВЕСЬ КОД переведён на использование std::chrono
            // везде используется timeout_t (и WaitUpTime)
            // отделяем внутреннее (теперь уже стандартное >= c++11)
            // представление для работы со временем (std::chrono)
            // и тип (t_msec) для "пользователей"
            std::chrono::steady_clock::time_point t_start; 
            std::chrono::milliseconds t_inner_msec; 
        private:
    };
 
    //----------------------------------------------------------------------------------------
    class PassiveCondTimer:
        public PassiveTimer
    {
        public:
 
            PassiveCondTimer() noexcept;
            virtual ~PassiveCondTimer() noexcept;
 
            virtual bool wait(timeout_t t_msec) noexcept override; 
            virtual void terminate() noexcept override;  
        protected:
 
        private:
            std::atomic_bool terminated;
            std::mutex    m_working;
            std::condition_variable cv_working;
    };
    // -------------------------------------------------------------------------
} // end of uniset namespace
//----------------------------------------------------------------------------------------
# endif //PASSIVETIMER_H_