CommonMessaging.h

Go to the documentation of this file.

/*
 * CommonMessaging.h
 *
 *  Created on: Feb 20, 2009
 *      Author: Marco Clemencic
 */

#ifndef COMMONMESSAGING_H_
#define COMMONMESSAGING_H_
#include "GaudiKernel/IService.h"
#include "GaudiKernel/ISvcLocator.h"
#include "GaudiKernel/IMessageSvc.h"
#include "GaudiKernel/MsgStream.h"
#include "GaudiKernel/SmartIF.h"
#include "GaudiKernel/GaudiException.h"

#include <memory>

template <class BASE>
class GAUDI_API CommonMessaging: public BASE {
public:
  typedef CommonMessaging base_class;

  template <typename A1, typename A2, typename A3> CommonMessaging(const A1& a1, const A2& a2, const A3& a3):
    BASE(a1,a2,a3), m_streamWithService(false) {}
  template <typename A1, typename A2> CommonMessaging(const A1& a1, const A2& a2):
    BASE(a1, a2), m_streamWithService(false) {}
  template <typename A1> CommonMessaging(const A1& a1):
    BASE(a1), m_streamWithService(false) {}
  CommonMessaging():
    BASE(), m_streamWithService(false) {}

  virtual ~CommonMessaging() {}

  virtual SmartIF<ISvcLocator>& serviceLocator() const = 0;

  virtual const std::string&  name() const = 0;

  inline SmartIF<IMessageSvc>& msgSvc() const {
    if (!m_msgsvc.get()) {
      // Get default implementation of the message service.
      m_msgsvc = this->serviceLocator();
    }
    return m_msgsvc;
  }

#if defined(GAUDI_V20_COMPAT) && !defined(G21_NO_DEPRECATED)

  inline SmartIF<IMessageSvc>& messageService() const {
    return msgSvc();
  }
#endif

  inline MsgStream& msgStream() const {
    if (UNLIKELY((!m_msgStream.get()) || (!m_streamWithService))) {
      SmartIF<IMessageSvc>& ms = msgSvc();
      m_msgStream.reset(new MsgStream(ms, this->name()));
      m_streamWithService = ms.get() != 0;
    }
    return *m_msgStream;
  }

  inline MsgStream& msgStream(const MSG::Level level) const {
    return msgStream() << level;
  }

  inline MsgStream&  always() const { return msgStream(MSG::ALWAYS); }

  inline MsgStream&   fatal() const { return msgStream(MSG::FATAL); }

  inline MsgStream&     err() const { return msgStream(MSG::ERROR); }

  inline MsgStream&   error() const { return msgStream(MSG::ERROR); }

  inline MsgStream& warning() const { return msgStream(MSG::WARNING); }

  inline MsgStream&    info() const { return msgStream(MSG::INFO); }

  inline MsgStream&   debug() const { return msgStream(MSG::DEBUG); }

  inline MsgStream& verbose() const { return msgStream(MSG::VERBOSE); }

  inline MsgStream&     msg() const { return msgStream(MSG::INFO); }

  inline MSG::Level msgLevel() const {
    return msgStream().level();
  }

  inline bool msgLevel(MSG::Level lvl) const {
    return UNLIKELY(msgLevel() <= lvl);
  }

protected:
  mutable SmartIF<IMessageSvc> m_msgsvc;

  mutable std::auto_ptr<MsgStream> m_msgStream;

  mutable bool m_streamWithService;

  void updateMsgStreamOutputLevel(int level) {
    if (m_msgStream.get()) m_msgStream->setLevel(level);
  }

};


#endif /* COMMONMESSAGING_H_ */