CallBackID.icc

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/*
  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef SGTOOLS_CALLBACKID_ICC
#define SGTOOLS_CALLBACKID_ICC
 
/*****************************************************************************
 *
 *  CallBackID.h
 *  IOVSvc
 *
 *  Author: Charles Leggett
 *  $Id: CallBackID.icc,v 1.4 2005-11-08 22:01:30 ssnyder Exp $
 *
 *  Provides means to identify a callback function.
 *
 *****************************************************************************/
 
#include <sstream>
#include "GaudiKernel/System.h"
 
template<typename T>
void CallBackID::set( StatusCode (T::*updF)(IOVSVC_CALLBACK_ARGS), 
              const T *obj)
{
  union {
    StatusCode (T::*updF)(IOVSVC_CALLBACK_ARGS);
    long i;
  } u;
  u.updF = updF;
 
  p_obj = (void*) obj;
  m_offset = u.i;
  
  std::ostringstream ost;
  ost << std::hex << "[0x" << (long)p_obj << "]+" << m_offset;
  
  m_objName = System::typeinfoName(typeid(*obj));
  m_name = m_objName + ost.str();
  
}
 
#endif