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; 
        virtual timeout_t getCurrent() const noexcept override;  
        virtual timeout_t getInterval() const noexcept override;

        virtual void terminate() noexcept; 
    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::high_resolution_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_