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path: root/maximus/networkclock/src/NetworkClockProcessor.cpp
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/************************************************************************
                        NetworkClockProcessor.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/NetworkClockProcessor.cpp
**************************************************************************/

#include "NetworkClockProcessor.h"
#include "NetworkClockEvtList.h"
#include "NetworkClockEvt.h"
#include "ClockSciMsg.h"
#include "SciServer.h"
#include "SystemManager.h"
#include "FunctionCallManager.h"
#include "PhyProcessor.h"
#include "sci_types.h"
#include "Error.h"

#include <netinet/in.h> // for 'htonl' and 'htons' functions
#include <iomanip> // for 'std::setfill' and 'std::setw'
#include <iostream> // for 'cout', 'cerr' and 'clog'
using namespace std;

// For the 'processNextEvt' function
//
#define callMemberFunction(object, pMember) (object.*(pMember))
typedef bool (NetworkClockProcessor::*memberFunction)(NetworkClockEvt&);
memberFunction arrayProcess[NETWORK_CLOCK_TYPE_NB] = {  &NetworkClockProcessor::processEvtNone,
                                                        &NetworkClockProcessor::processEvtRemove,
                                                        &NetworkClockProcessor::processEvtStation,
                                                        &NetworkClockProcessor::processEvtFunctionCall,
                                                        &NetworkClockProcessor::processEvtPhy,
                                                        &NetworkClockProcessor::processEvtSystem  };


// Constructors/Destructors
//  


NetworkClockProcessor::NetworkClockProcessor ( ):
mCurrentTickValue(0),
mpNetworkClockEvtList(NULL),
mpSciServer(NULL),
mpSystemManager(NULL),
mpFunctionCallManager(NULL),
mpPhyProcessor(NULL)
{
  clog << "NetworkClockProcessor()" << endl;
  
  initAttributes ();
}


NetworkClockProcessor::NetworkClockProcessor (  SciServer * p_sci_server,
                                                SystemManager * p_system_manager,
                                                FunctionCallManager * p_function_call_manager,
                                                PhyProcessor * p_phy_processor   ):
mCurrentTickValue(0),
mpNetworkClockEvtList(NULL)
{
  clog << "NetworkClockProcessor(...)" << endl;
  
  if (  (NULL != p_sci_server)
        && (NULL != p_system_manager)
        && (NULL != p_function_call_manager)
        && (NULL != p_phy_processor)  )
  {
    mpSciServer = p_sci_server;
    mpSystemManager = p_system_manager;
    mpFunctionCallManager = p_function_call_manager;
    mpPhyProcessor = p_phy_processor;
    
    registerClockSciMsg ();
  } 
  else
  {
    throw Error("NetworkClockProcessor(...)", "At least one of the received pointers is NULL");
  }
  initAttributes ();
}


void NetworkClockProcessor::initAttributes ( )
{
  clog << "NetworkClockProcessor::initAttributes" << endl;
  
  mpNetworkClockEvtList = new  NetworkClockEvtList ();
  if (NULL == mpNetworkClockEvtList)
  {
    throw Error("NetworkClockProcessor::initAttributes", "Initialized NetworkClockEvtList pointer is NULL");  
  }
}


NetworkClockProcessor::~NetworkClockProcessor ( )
{
  clog << "~NetworkClockProcessor" << endl;
  
  if (NULL != mpNetworkClockEvtList)
  {
    delete (mpNetworkClockEvtList);
    mpNetworkClockEvtList = NULL;
  }
  if (NULL != mpSciServer)
  {
    mpSciServer = NULL;
  }
  if (NULL != mpSystemManager)
  {
    mpSystemManager = NULL;
  }
  if (NULL != mpFunctionCallManager)
  {
    mpFunctionCallManager = NULL;
  }
  if (NULL != mpPhyProcessor)
  {
    mpPhyProcessor = NULL;
  }
}


//  
// Methods
//  


// Other methods
//  


// public methods
//  


void NetworkClockProcessor::createEvt ( const Network_Clock_Tick tick_value, const NetworkClockEvt & evt_to_send )
{
  clog << "NetworkClockProcessor::createEvt" << endl;
  
  if ( !insertEvt (tick_value, evt_to_send) )
  {
    throw Error("NetworkClockProcessor::createEvt", "cannot insert event");
  }
}


bool NetworkClockProcessor::insertEvt ( const Network_Clock_Tick tick_value, const NetworkClockEvt & evt_to_insert )
{
  clog << "NetworkClockProcessor::insertEvt" << endl;
  bool bInsert = false;
  
  NetworkClockEvt evtToInsert = NetworkClockEvt (evt_to_insert);
  
  if (NULL != mpNetworkClockEvtList)
  {
    if ( mpNetworkClockEvtList->insertElement (tick_value, evtToInsert) )
    {
      bInsert = true;
    }
  }
  else
  {
    throw Error("NetworkClockProcessor::insertEvt", "NULL pointer");
  }
  
  return bInsert;
}


bool NetworkClockProcessor::removeEvt ( const Network_Clock_Tick tick_value, const NetworkClockEvt & evt_to_remove )
{
  clog << "NetworkClockProcessor::removeEvt" << endl;
  bool bRemove = false;
  
  if (NULL != mpNetworkClockEvtList)
  {
    if ( mpNetworkClockEvtList->removeElement (tick_value, evt_to_remove) )
    {
      bRemove = true;
    }
  }
  else
  {
    throw Error("NetworkClockProcessor::removeEvt", "NULL pointer");
  }
  
  return bRemove;
}


bool NetworkClockProcessor::processNextEvt ( )
{
  bool bProcess = true;
  
  // Get the next event in the NetworkClockEvtList
  // If there is no more event to process at the current tick, the tick value is incremented depending on the stations state
  // It there is still no event to process at the incremented tick, return false
  //
  if ( (NULL != mpNetworkClockEvtList) && (NULL != mpSystemManager) )
  {
    if (mpSystemManager->areAllActiveStationsIdle())
    {
      NetworkClockEvt evtToProcess;
      Network_Clock_Tick currentTickValue = getCurrentTickValue();
      if ( mpNetworkClockEvtList->getNextElement (currentTickValue, evtToProcess) )
      {
        // If an event has been get, update tick and process evt
        //
        bProcess = setCurrentTickValue(currentTickValue);
        clog << "\tprocessing evt at tick " << getCurrentTickValue() << "..." << endl;
        bProcess &= callMemberFunction (*this, arrayProcess[evtToProcess.getNetworkClockType()]) (evtToProcess);
      }
      else
      {
        // FOR TESTS PURPOSE ONLY, TO REMOVE
        //
        sleep (10);
        bProcess = false; 
      }
    }    
  }
  else
  {
    throw Error("NetworkClockProcessor::processNextEvt", "NULL pointer");
  }
  
  return bProcess;
}


bool NetworkClockProcessor::processEvtNone ( NetworkClockEvt & evt_to_process )
{
  //clog << "NetworkClockProcessor::processEvtNone" << endl;
  bool bProcessNone = false;
  
  throw Error("NetworkClockProcessor::processEvtNone", "Event cannot be sent because type is not set");
  
  return bProcessNone;
}


bool NetworkClockProcessor::processEvtRemove ( NetworkClockEvt & evt_to_process )
{
  //clog << "NetworkClockProcessor::processEvtRemove" << endl;
  bool bProcessRemove = false;
  
  throw Error("NetworkClockProcessor::processEvtRemove", "Event cannot be processed because type is set to REMOVE");
  
  return bProcessRemove;
}


// Goal of this method is to fill SCI msg data that have to be sent on an output pipe
//
bool NetworkClockProcessor::processEvtStation ( NetworkClockEvt & evt_to_process )
{
  clog << "NetworkClockProcessor::processEvtStation" << endl;
  bool bProcessStation = false;
  
  ClockSciMsg clockSciMsgToSend;
  
  // Decompose current tick value into two uint32_t values
  //
  uint32_t netclockHigh=0, netclockLow=0;
  netclockLow = (uint32_t)(getCurrentTickValue());
  netclockHigh = (uint32_t)(((uint64_t)(getCurrentTickValue()) >> 32));
  
  // Fill specialized SCI msg header
  // As specialized SCI msg header will be sent on an output pipe, 'hton' functions have to be called
  //
  struct Network_Clock_Header clockSciMsgHeader = { NETWORK_CLOCK_VERSION,
                                                    static_cast<uint8_t>(evt_to_process.getNetworkClockType()),
                                                    htons(evt_to_process.getNetworkClockId()),
                                                    htons(0x0000), // flags
                                                    htons(0x0000), // reserved
                                                    htonl(netclockHigh),
                                                    htonl(netclockLow) };
  bProcessStation = clockSciMsgToSend.setSpecializedSciMsgHeader(&clockSciMsgHeader);
  
  // Fill specialized SCI msg header size
  //
  bProcessStation &= clockSciMsgToSend.setSpecializedSciMsgHeaderSize(static_cast<unsigned long>(sizeof(Network_Clock_Header)));  
  
  // Fill specialized SCI msg data length and specialized SCI msg data
  // When sending a clock SCI msg, there is no clock SCI msg data
  //
  bProcessStation &= clockSciMsgToSend.setSpecializedSciMsgDataLength(0);
  bProcessStation &= clockSciMsgToSend.setSpecializedSciMsgData(NULL);

  // Fill SCI msg data length
  // When sending a SCI msg, SCI msg data contain:
  // - SCI msg header,
  // - specialized SCI msg header,
  // - and specialized SCI msg data
  //
  bProcessStation &= clockSciMsgToSend.setSciMsgDataLength(static_cast<unsigned long>(sizeof(struct Sci_Msg_Header)) + clockSciMsgToSend.getSpecializedSciMsgHeaderSize() + clockSciMsgToSend.getSpecializedSciMsgDataLength());
    
  // Fill SCI msg header
  // As SCI msg header will be sent on an output pipe, 'hton' functions have to be called
  //
  bProcessStation &= clockSciMsgToSend.incrementSciMsgId(); // to have an updated msg id
  struct Sci_Msg_Header sciMsgHeader = { htonl(clockSciMsgToSend.getDefinedSciMsgMagicId()),
                                         clockSciMsgToSend.getDefinedSciMsgVersion(),
                                         SCI_MSG_TYPE_NETWORK_CLOCK,
                                         htons(static_cast<uint16_t>(clockSciMsgToSend.getSciMsgDataLength())),
                                         htons(evt_to_process.getStationId()),
                                         htons(clockSciMsgToSend.getSciMsgId()),
                                         htonl(netclockHigh),
                                         htonl(netclockLow),
                                         htons(0), // flags
                                         htons(0) }; // reserved
  bProcessStation &= clockSciMsgToSend.setSciMsgHeader(&sciMsgHeader);
   
  // Fill SCI msg data
  // When sending a SCI msg, since only SCI msg data will be sent on an output pipe,
  // SCI msg header and specialized SCI msg header have to be copied into SCI msg data
  // Then, specialized SCI msg data have to be copied into SCI msg data
  //
  unsigned char * pTempData = new unsigned char [clockSciMsgToSend.getSciMsgDataLength()];
  if (NULL != pTempData)
  {
    memcpy(pTempData, (unsigned char *)&sciMsgHeader, sizeof(struct Sci_Msg_Header));
    memcpy(pTempData+sizeof(Sci_Msg_Header), (unsigned char *)&clockSciMsgHeader, sizeof(struct Network_Clock_Header));
    memcpy(pTempData+sizeof(Sci_Msg_Header)+sizeof(struct Network_Clock_Header), clockSciMsgToSend.getSpecializedSciMsgData(), clockSciMsgToSend.getSpecializedSciMsgDataLength());
  }
  bProcessStation &= clockSciMsgToSend.setSciMsgData(pTempData);
  
  // Free temporary allocated memory
  //
  if (NULL != pTempData)
  {
    delete [] pTempData;
    pTempData = NULL; 
  }
    
  if (0 != bProcessStation)
  {
    // SCI msg is sent on an output pipe by the SCI server
    //
    bProcessStation = sendEvtMsg (clockSciMsgToSend);
  }
  else
  {
    throw Error("NetworkClockProcessor::processEvtStation", "Event cannot be sent because it is not correctly filled in");
  }
  
  return bProcessStation;
}


bool NetworkClockProcessor::processEvtFunctionCall ( NetworkClockEvt & evt_to_process )
{
  //clog << "NetworkClockProcessor::processEvtFunctionCall" << endl;
  bool bProcessFunction = false;
  
  throw Error("NetworkClockProcessor::processEvtFunctionCall", "Event cannot be processed because type is set to FUNCTION_CALL"); 
  
  return bProcessFunction;
}


bool NetworkClockProcessor::processEvtPhy ( NetworkClockEvt & evt_to_process )
{
  //clog << "NetworkClockProcessor::processEvtPhy" << endl;
  bool bProcessPhy = false;
  
  // ...
  
  return bProcessPhy;
}


bool NetworkClockProcessor::processEvtSystem ( NetworkClockEvt & evt_to_process )
{
  //clog << "NetworkClockProcessor::processEvtSystem" << endl;
  bool bProcessSystem = false;
  
  bProcessSystem = mpSystemManager->updateStationStatus(evt_to_process.getStationId(), MAXIMUS_STATION_STATUS_IDLE);
  
  return bProcessSystem;  
}


// private methods
//  

 
bool NetworkClockProcessor::incrementCurrentTickValue ( )
{
  bool bTick = false;
  
  mCurrentTickValue++;
  bTick = mpFunctionCallManager->updateTickValue(mCurrentTickValue);
  bTick &= mpPhyProcessor->updateTickValue(mCurrentTickValue);
  
  return bTick;
}


bool NetworkClockProcessor::sendEvtMsg ( ClockSciMsg & clock_sci_msg_to_send )
{
  //clog << "NetworkClockProcessor::sendEvtMsg" << endl;
  bool bSend = false;
  
  if (NULL != mpSciServer)
  {
    bSend = mpSciServer->sendSciMsg (&clock_sci_msg_to_send);
  }
  else
  {
    throw Error("NetworkClockProcessor::sendEvtMsg", "NULL pointer");
  }
    
  return bSend;
}


void NetworkClockProcessor::registerClockSciMsg ( )
{
  clog << "NetworkClockProcessor::registerClockSciMsg" << endl;
  
  if (NULL != mpSciServer)
  {
    mpSciServer->registerSpecializedSciMsg(SCI_MSG_TYPE_NETWORK_CLOCK, new ClockSciMsg(this));
  }
  else
  {
    throw Error("NetworkClockProcessor::registerClockSciMsg", "SciServer pointer is NULL");
  }
}


// protected methods
//  


// Accessor methods
//  


// public attribute accessor methods
//  


// private attribute accessor methods
//  


Network_Clock_Tick NetworkClockProcessor::getCurrentTickValue ( ) const
{
  return mCurrentTickValue;
}


bool NetworkClockProcessor::setCurrentTickValue ( const Network_Clock_Tick tick_value )
{
  mCurrentTickValue = tick_value;
  
  return true;
}


NetworkClockEvtList * NetworkClockProcessor::getNetworkClockEvtList ( )
{
  return mpNetworkClockEvtList;
}


// protected attribute accessor methods
//