Leaked source code of windows server 2003
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/*++
Copyright (c) 1995-1996 Microsoft Corporation
Module Name :
ilogfile.hxx
Abstract:
This module defines the classes and functions for file buffering used by File logger.
Author:
Murali R. Krishnan ( MuraliK ) 21-Feb-1996
Environment:
User Mode - Win32
Project:
Internet Server DLL
Revision History:
--*/
# ifndef _ILOGFILE_HXX_
# define _ILOGFILE_HXX_
// 20 is for 2^20 that is one meg
#define GRANULARITY_OF_FILE_SIZE_REPORT_SHIFT (20)
#define FILE_SIZE_LOW_MAX (0xFFFFFFFF)
class ILOG_FILE {
public:
ILOG_FILE(VOID); ~ILOG_FILE(VOID);
BOOL Write( IN PCHAR pvData, IN DWORD cbData); BOOL Open( IN LPCSTR pszFileName, IN DWORD dwTruncationSize, IN BOOL fLogEvent); VOID QueryFileSize(ULARGE_INTEGER *qwSize) { qwSize->QuadPart = m_qwFilePos.QuadPart; } BOOL CloseFile(VOID);
private: BOOL PositionToEOF(ULARGE_INTEGER *pFilePos); BOOL CreateMapping(VOID); VOID DestroyMapping(VOID); BOOL ExpandMapping( ); BOOL OpenFile( IN LPCSTR pszFileName, IN BOOL fLogEvent);
private: HANDLE m_hFile; // handle for current log file.
HANDLE m_hMemFile; DWORD m_nGranules; DWORD m_dwAllocationGranularity; LPVOID m_pvBuffer; // buffer for batched up records
DWORD m_cbBufferUsed;
ULARGE_INTEGER m_qwFilePos; ULARGE_INTEGER m_qwTruncateSize; ULARGE_INTEGER m_mapSize; STR m_strFileName; // Log file name
}; // class ILOG_FILE
typedef ILOG_FILE * PILOG_FILE;
# endif // _ILOGFILE_HXX_
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