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// -*- C++ -*-
//=============================================================================
/**
* @file Log_Msg_Backend.h
*
* $Id$
*
* @author Douglas C. Schmidt <schmidt@cs.wustl.edu>
*/
//=============================================================================
#ifndef ACE_LOG_MSG_BACKEND_H
#define ACE_LOG_MSG_BACKEND_H
#include "ace/pre.h"
#include "ace/ACE_export.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
class ACE_Log_Record;
/**
* @class ACE_Log_Msg_Backend
*
* @brief Define the interface for ACE_Log_Msg backend strategies.
*
* The ACE_Log_Msg class can log to multiple backend strategies, for
* example, some send messages to a remote logger, others dump to a
* file, or simply to stderr. In the future we could define
* interfaces that log to the syslog daemon (on UNIX), the Event log
* (on NT) a temporary ring buffer, etc.
*/
class ACE_Export ACE_Log_Msg_Backend
{
public:
/// No-op virtual destructor.
virtual ~ACE_Log_Msg_Backend (void);
/// Open a new connection
virtual int open (const ACE_TCHAR *logger_key) = 0;
/*
* Reset the backend. When changing the logging destination the
* backend may need to properly disconnect from the remote logging
* daemon and reclaim some local resources. But we try to reduce
* the number of local allocations/deallocations.
*/
virtual int reset (void) = 0;
/// Close the backend completely.
virtual int close (void) = 0;
/// Backend routine. This is called when we want to log a message.
/// Since this routine is pure virtual, it must be overwritten by the
/// subclass.
virtual int log (ACE_Log_Record &log_record) = 0;
};
#include "ace/post.h"
#endif /* ACE_LOG_MSG_BACKEND_H */
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