Method migrateToCurrentThread

src/iocore/net/UnixNetVConnection.cc:1356–1392

* Close down the current netVC. Save aside the socket and SSL information * and create new netVC in the current thread/netVC */

 * and create new netVC in the current thread/netVC
 */
UnixNetVConnection *
UnixNetVConnection::migrateToCurrentThread(Continuation *cont, EThread *t)
{
  NetHandler *client_nh = get_NetHandler(t);
  ink_assert(client_nh);
  if (this->nh == client_nh) {
    // We're already there!
    return this;
  }

  Connection hold_con;
  hold_con.move(this->con);

  void *arg = this->_prepareForMigration();

  // Do_io_close will signal the VC to be freed on the original thread
  // Since we moved the con context, the fd will not be closed
  // Go ahead and remove the fd from the original thread's epoll structure, so it is not
  // processed on two threads simultaneously
  this->ep.stop();

  // Create new VC:
  UnixNetVConnection *newvc = static_cast<UnixNetVConnection *>(this->_getNetProcessor()->allocate_vc(t));
  ink_assert(newvc != nullptr);
  if (newvc->populate(hold_con, cont, arg) != EVENT_DONE) {
    newvc->do_io_close();
    newvc = nullptr;
  }
  if (newvc) {
    newvc->set_context(get_context());
    newvc->options = this->options;
  }

  // Do not mark this closed until the end so it does not get freed by the other thread too soon
  this->do_io_close();
  return newvc;
}

void *
UnixNetVConnection::_prepareForMigration()