source: source/ariba/utility/system/Timer.cpp @ 8606

// [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
//
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// modification, are permitted provided that the following conditions are
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//
// 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.
//
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// 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,
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// 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