source: source/ariba/utility/system/Timer.cpp@ 9745

// [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]



#include "Timer.h"



namespace ariba {

namespace utility {



use_logging_cpp(Timer);

SystemEventType TimerEventType("Timer");



Timer::Timer() {

        running = false;



#ifndef UNDERLAY_OMNET

        timerThread = NULL;

#endif // UNDERLAY_OMNET

}



Timer::~Timer() {

#ifndef UNDERLAY_OMNET

        stop();

        if(timerThread != NULL){

                delete timerThread;

                timerThread = NULL;

        }

#endif // UNDERLAY_OMNET

}



void Timer::setInterval(unsigned int millis, bool oneshot) {

        this->millis = millis;

        this->oneshot = oneshot;

}



void Timer::start() {

        if( running ) return;



#ifndef UNDERLAY_OMNET

        // running var will be set in the thread function

        if( timerThread == NULL )

                timerThread = new boost::thread(boost::bind(&Timer::threadFunc, this) );

#else

        running = true;

        SystemQueue::instance().scheduleEvent(

                SystemEvent( this, TimerEventType, NULL), millis );

#endif

}



void Timer::reset(){

#ifndef UNDERLAY_OMNET

        if(timerThread == NULL) return;

        timerThread->interrupt();

#else

        #error timer interruption not implemented for omnet

#endif

}



bool Timer::isRunning(){

        return running;

}



void Timer::stop() {

        running = false;

        reset(); // cause the sleep to abort

        SystemQueue::instance().dropAll(this);

        if(timerThread != NULL)

                timerThread->join();

}



void Timer::eventFunction() {

        //std::cout << "unimplemented eventFunction Timer(" << millis << ")" << std::endl;

}



#ifndef UNDERLAY_OMNET

void Timer::threadFunc( Timer* obj ) {

        obj->running = true;



        while( obj->running ) {



                try{



                        boost::this_thread::sleep( boost::posix_time::milliseconds(obj->millis) );

                        if (obj->running)

                                SystemQueue::instance().scheduleEvent( SystemEvent( obj, TimerEventType, NULL), 0 );



                }catch(boost::thread_interrupted e){

                        // exception called when Timer::reset is called

                        // don't need to handle the exception

                }



                if( obj->oneshot ) break;

        }



        if(! obj->oneshot )

                obj->running = false;

}

#endif // UNDERLAY_OMNET



void Timer::handleSystemEvent( const SystemEvent& event ) {

        if( running ){

                if( oneshot ) running = false;

                eventFunction();

        }



#ifdef UNDERLAY_OMNET

        if( ! oneshot && running )

                SystemQueue::instance().scheduleEvent(

                        SystemEvent( this, TimerEventType, NULL), millis );

#endif

}



}} // namespace ariba, common