source: source/ariba/utility/system/SystemEvent.h@ 12766

// [License]
// The Ariba-Underlay Copyright
//
// Copyright (c) 2008-2009, Institute of Telematics, UniversitÀt Karlsruhe (TH)
//
// Institute of Telematics
// UniversitÀt Karlsruhe (TH)
// Zirkel 2, 76128 Karlsruhe
// Germany
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE INSTITUTE OF TELEMATICS ``AS IS'' AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE ARIBA PROJECT OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// The views and conclusions contained in the software and documentation
// are those of the authors and should not be interpreted as representing
// official policies, either expressed or implied, of the Institute of
// Telematics.
// [License]

#ifndef SYSTEMEVENT_H_
#define SYSTEMEVENT_H_

#include <boost/date_time.hpp>
#include <iostream>
#include "SystemEventType.h"

using boost::posix_time::ptime;

namespace ariba {
namespace utility {

class SystemQueue;
class SystemEventListener;

class SystemEvent {
        friend class SystemQueue;
private:
        SystemEventListener* listener; //< handler of the event
        SystemEventType type; //< type of the event
        const void* data; //< data attached to the event

public:
        // TODO: these should be private, but the gcc 3.4 in scratchbox for cross-compiling
        // for Maemo (Nokia N810) gets confused when the friend class SystemQueue has a 
        // private class that accesses these variables. Therefore they are public for now.
        ptime scheduledTime; //< time the event was originally given to the queue
        ptime deadline; //< time when the event should be executed  TODO Mario 
        uint32_t delayTime; //< time the event is scheduled at, or 0 if it is to be fired immediately
        uint32_t remainingDelay; //< remaining delay time for sleeping

public:
        inline SystemEvent(SystemEventListener* mlistener, SystemEventType mtype =
                        SystemEventType::DEFAULT, void* mdata = NULL) :
                listener(mlistener), 
                type(mtype), 
                data(mdata), 
                scheduledTime(boost::posix_time::not_a_date_time),
                deadline(boost::posix_time::not_a_date_time),
                delayTime(0),
                remainingDelay(0)
        {
        }

        template<typename T>
        inline SystemEvent(SystemEventListener* mlistener, SystemEventType mtype =
                        SystemEventType::DEFAULT, T* mdata = NULL) :
                listener(mlistener), 
                type(mtype), 
                data((void*) mdata), 
                scheduledTime(boost::posix_time::not_a_date_time),
                deadline(boost::posix_time::not_a_date_time),
                delayTime(0),
                remainingDelay(0) {
        }

        inline SystemEvent(const SystemEvent& copy) {
                this->scheduledTime = copy.scheduledTime;
        this->deadline = copy.deadline;
                this->delayTime = copy.delayTime;
                this->remainingDelay = copy.remainingDelay;
                this->listener = copy.listener;
                this->type = copy.type;
                this->data = copy.data;
        }

        inline void operator=(const SystemEvent& right) {
                this->scheduledTime = right.scheduledTime;
        this->deadline = right.deadline;
                this->delayTime = right.delayTime;
                this->remainingDelay = right.remainingDelay;
                this->listener = right.listener;
                this->type = right.type;
                this->data = right.data;
        }

        inline ~SystemEvent() {
        }

        template<typename T>
        inline operator T() const {
                return (T) (data);
        }

        inline SystemEventListener* getListener() const {
                return listener;
        }

        template<typename T>
        inline T* getData() const {
                return (T*) *this;
        }

        inline const SystemEventType getType() const {
                return type;
        }

        inline const ptime getScheduledTime() const {
                return scheduledTime;
        }

        inline const uint32_t getRemainingDelay() const {
                return remainingDelay;
        }

        bool operator<(const SystemEvent& right) const
        {
                return this->deadline < right.deadline;
        }

    bool operator>(const SystemEvent& right) const
    {
        return this->deadline > right.deadline;
    }

};

}
} // spovnet, common

#endif /* SYSTEMEVENT_H_ */