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arangodb/arangod/Wal/Logger.h

112 lines
3.8 KiB
C++

////////////////////////////////////////////////////////////////////////////////
/// @brief Write-ahead log logger
///
/// @file
///
/// DISCLAIMER
///
/// Copyright 2004-2013 triAGENS GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
/// http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is triAGENS GmbH, Cologne, Germany
///
/// @author Jan Steemann
/// @author Copyright 2011-2013, triAGENS GmbH, Cologne, Germany
////////////////////////////////////////////////////////////////////////////////
#ifndef TRIAGENS_WAL_LOGGER_H
#define TRIAGENS_WAL_LOGGER_H 1
#include "Basics/Common.h"
#include "Wal/LogEntry.h"
namespace triagens {
namespace wal {
// -----------------------------------------------------------------------------
// --SECTION-- class Logger
// -----------------------------------------------------------------------------
class LogfileManager;
class Logger {
////////////////////////////////////////////////////////////////////////////////
/// @brief Logger
////////////////////////////////////////////////////////////////////////////////
private:
Logger (Logger const&);
Logger& operator= (Logger const&);
// -----------------------------------------------------------------------------
// --SECTION-- constructors and destructors
// -----------------------------------------------------------------------------
public:
////////////////////////////////////////////////////////////////////////////////
/// @brief create a logger component
////////////////////////////////////////////////////////////////////////////////
Logger (LogfileManager*);
////////////////////////////////////////////////////////////////////////////////
/// @brief destroy a logger component
////////////////////////////////////////////////////////////////////////////////
~Logger ();
// -----------------------------------------------------------------------------
// --SECTION-- public methods
// -----------------------------------------------------------------------------
public:
////////////////////////////////////////////////////////////////////////////////
/// @brief reserve space in a log file
////////////////////////////////////////////////////////////////////////////////
LogEntry reserve (size_t);
// -----------------------------------------------------------------------------
// --SECTION-- private methods
// -----------------------------------------------------------------------------
private:
// -----------------------------------------------------------------------------
// --SECTION-- private variables
// -----------------------------------------------------------------------------
private:
////////////////////////////////////////////////////////////////////////////////
/// @brief the log file manager
////////////////////////////////////////////////////////////////////////////////
LogfileManager* _manager;
};
}
}
#endif
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