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path: root/maximus/networkclock/src/NetworkClockEvtList.cpp
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/************************************************************************
                        NetworkClockEvtList.cpp - Copyright buret

Here you can write a license for your code, some comments or any other
information you want to have in your generated code. To to this simply
configure the "headings" directory in uml to point to a directory
where you have your heading files.

or you can just replace the contents of this file with your own.
If you want to do this, this file is located at

/usr/share/apps/umbrello/headings/heading.cpp

-->Code Generators searches for heading files based on the file extension
   i.e. it will look for a file name ending in ".h" to include in C++ header
   files, and for a file name ending in ".java" to include in all generated
   java code.
   If you name the file "heading.<extension>", Code Generator will always
   choose this file even if there are other files with the same extension in the
   directory. If you name the file something else, it must be the only one with that
   extension in the directory to guarantee that Code Generator will choose it.

you can use variables in your heading files which are replaced at generation
time. possible variables are : author, date, time, filename and filepath.
just write %variable_name%

This file was generated on %date% at %time%
The original location of this file is /home/buret/eclipse/maximus/networkclock/src/NetworkClockEvtList.cpp
**************************************************************************/

#include "NetworkClockEvtList.h"

#include "NetworkClockEvt.h"

#include "Error.h"
#include "Logger.h"

#include <iostream> // for 'cout', 'cerr' and 'clog'
using namespace std;


// Constructors/Destructors
//  


NetworkClockEvtList::NetworkClockEvtList ( )
{
  logFunction();
  
  initAttributes();
}


void NetworkClockEvtList::initAttributes ( )
{
  logFunction();
}


NetworkClockEvtList::~NetworkClockEvtList ( )
{
  logFunction();
  
  mListOfEvts.clear();
}


//  
// Methods
//  


// Other methods
//  


// public methods
//


bool NetworkClockEvtList::insertElement ( const Network_Clock_Tick tick_value, const NetworkClockEvt & evt_to_insert )
{
  logFunction();
  bool bInsert = false;

  // If the event to insert already exists in the list, it is an update
  // 1. Remove this event from the list
  //
  if (removeElement(evt_to_insert))
  {
    clog << logger(LOG_INFO) << "update tick at which the event has to be processed" << endl; 
  }
      
  // 2. Insert the event at the required tick
  // 
  mListOfEvts.insert(Multimap::value_type(tick_value, evt_to_insert)); // return Multimap::iterator
  
  displayListOfEvts (tick_value);
  bInsert = true;
  
  return bInsert;
}


bool NetworkClockEvtList::removeElement ( const NetworkClockEvt & evt_to_remove )
{
  logFunction();
  bool bRemove = false;
  
  for (Multimap::iterator it = mListOfEvts.begin(); it != mListOfEvts.end(); ++it)
  {
    if ( !bRemove && (evt_to_remove == it->second) )
    {
      clog << logger(LOG_INFO) << "remove element ";
      it->second.displayEvt();
      clog << " at tick " << it->first << endl;
      mListOfEvts.erase(it);
      bRemove = true;
    }
  }
  displayListOfEvts(); 
  
  return bRemove;
}


bool NetworkClockEvtList::removeElement ( const Network_Clock_Tick tick_value, const NetworkClockEvt & evt_to_remove )
{
  logFunction(); 
  bool bRemove = false;
  
  pair<Multimap::iterator, Multimap::iterator> evtsToRemove = mListOfEvts.equal_range(tick_value);
  
  for (Multimap::iterator it = evtsToRemove.first; it != evtsToRemove.second; ++it)
  {
    if ( !bRemove && (evt_to_remove == it->second) )
    {
      clog << logger(LOG_INFO) << "remove element ";
      it->second.displayEvt();
      clog << " at tick " << tick_value << endl;
      mListOfEvts.erase(it);
      bRemove = true; 
    }
  }
  displayListOfEvts();
  
  return bRemove;
}


bool NetworkClockEvtList::addElement ( const NetworkClockEvt & evt_to_add )
{
  return false;
}


// Return true while there are events to process at current tick, else return false
//
bool NetworkClockEvtList::getNextElement ( Network_Clock_Tick & tick_value, NetworkClockEvt & next_evt_to_process )
{
  static Network_Clock_Tick currentTickValue = -1;
  static Multimap::const_iterator evtIterator;
  static pair<Multimap::const_iterator, Multimap::const_iterator> evtsToProcess;
 
  bool bGet = false;
   
  if (!mListOfEvts.empty())
  {
    if (-1 == currentTickValue)
    {
      /* Finds the first element whose key greater than k. */
      evtIterator = mListOfEvts.upper_bound (tick_value);
               
      // update local current tick value
      currentTickValue = evtIterator->first;
    }
    
    /* Finds a range containing all elements whose key is k. */    
    evtsToProcess = mListOfEvts.equal_range(currentTickValue);
    
    if (evtIterator != evtsToProcess.second)
    {
      // set tick value to return
      tick_value = currentTickValue;
      
      // find next event to process
      next_evt_to_process = NetworkClockEvt(evtIterator->second);
        
      ++evtIterator;
      bGet = true;
    }
    else
    {
      // clear processed events
      mListOfEvts.erase(currentTickValue);
      
      // reset local current tick value
      currentTickValue = -1;
    }
  }
  
  return bGet;
}


void NetworkClockEvtList::displayListOfEvts ( ) const
{
  logFunction();
  clog << logger(LOG_INFO) << "list of events = ";

  if (!mListOfEvts.empty())
  {
    clog << endl;
    for (Multimap::const_iterator it = mListOfEvts.begin(); it != mListOfEvts.end(); ++it)
    {
      clog << "\t[" << it->first << ", ";
      const NetworkClockEvt evt = it->second;
      evt.displayEvt();
      clog << "]" << endl;
    }
  }
  else
  {
    clog << "empty!" << endl;
  }
} 


// private methods
//


bool NetworkClockEvtList::removePreviousElements ( const Network_Clock_Tick tick_value )
{
  logFunction();
  bool bRemove = false;
    
  if (!mListOfEvts.empty())
  {
    mListOfEvts.erase(tick_value);
    Multimap::size_type numberOfEvts = mListOfEvts.erase(tick_value);
    clog << logger(LOG_INFO) << "remove " << numberOfEvts << " element(s)" << endl;
    
    displayListOfEvts();
    bRemove = true;
  }
  else
  {
    clog << logger(LOG_INFO) << "no elements to remove!" << endl;
  }
  
  return bRemove;
}


void NetworkClockEvtList::displayListOfEvts ( const Network_Clock_Tick tick_value ) const
{
  logFunction();
  
  if (!mListOfEvts.empty())
  {
    clog << logger(LOG_INFO) << "number of elements at tick " << tick_value << ": " << mListOfEvts.count(tick_value) << endl;
  }
  else
  {
    clog << logger(LOG_INFO) << "list of events = empty!" << endl;
  }
}


// protected methods
//


// Accessor methods
//  


// public attribute accessor methods
//  


// protected attribute accessor methods
//  


// private attribute accessor methods
//  


bool NetworkClockEvtList::setListOfEvts ( Multimap & list_of_evts )
{
  logFunction();
  
  mListOfEvts = list_of_evts;
  displayListOfEvts();

  return true;
}


Multimap & NetworkClockEvtList::getListOfEvts ( )
{
  return mListOfEvts;
}