EventServer.cc

/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
 
#include "daq/expreco/EventServer.h"
#include <framework/pcore/MsgHandler.h>
 
#include <unistd.h>
 
using namespace Belle2;
using namespace std;
 
// constructor/destructor
 
EventServer::EventServer(string rbufname, int port) : m_port(port)
{
  // Attach to RingBuffer
  m_rbuf = new RingBuffer(rbufname.c_str());
 
  // Open EvtSocket
  m_sock = new EvtSocketRecv(m_port, false);
  m_man = new EvtSocketManager(m_sock);
}
 
EventServer::~EventServer()
{
  delete m_rbuf;
  delete m_sock;
  delete m_man;
}
 
int EventServer::server()
{
  SocketIO sio;
  MsgHandler msghdl(0);
  char* evtbuffer = new char[MAXEVTSIZE];
 
  //  vector<int> recvsock;
  int loop_counter [[maybe_unused]] = 0;
  while (m_force_exit == 0) {
    // Pick up a event from RingBuffer (non blocking)
    int size = m_rbuf->remq((int*)evtbuffer);
    //    if ( size > 0 )
    //      printf ( "From RB : event size = %d\n", size );
 
    // Check connection request
    int exam_stat = m_man->examine();
    //    printf("Examine: exam_stat = %d\n", exam_stat);
    if (exam_stat == 0) {
      printf("Initial connection request detected!\n");
      //      int fd = recvsock[;
    } else if (exam_stat == 1 && size > 0) { //
      //      printf ( "Event data data ready on socket\n" );
      vector<int>& recvsock = m_man->connected_socket_list();
      //      printf ( "size of recvsock = %d\n", recvsock.size() );
      for (vector<int>::iterator it = recvsock.begin();
           it != recvsock.end(); ++it) {
        int fd = *it;
        if (m_man->connected(fd, true)) {
          int is = sio.put(fd, evtbuffer, size * 4);
          //    printf ( "data put on socket : %d\n", is );
          if (is <= 0) {
            printf("EventServer: fd %d disconnected\n", fd);
            m_man->remove(fd);
            break;
          }
        }
      }
    }
    usleep(1000);
    loop_counter++;
  }
  return 0;
}