/*++

Copyright (C) 1996-1999 Microsoft Corporation

Module Name:

    log_bin.h

Abstract:

    <abstract>

--*/

#ifndef _LOG_BIN_H_
#define _LOG_BIN_H_

// define record locations in the file
#define BINLOG_TYPE_ID_RECORD       ((DWORD)1)
#define BINLOG_HEADER_RECORD        ((DWORD)2)
#define BINLOG_FIRST_DATA_RECORD    ((DWORD)3)

// Record type definition
// low WORD of the type header field is "BL" to help re-sync records
// that may have been corrupted
#define BINLOG_START_WORD       ((WORD)0x4C42)
#define BINLOG_TYPE_HEADER      ((DWORD)(0x00010000 | (DWORD)(BINLOG_START_WORD)))
#define BINLOG_TYPE_CATALOG     ((DWORD)(0x00020000 | (DWORD)(BINLOG_START_WORD)))
#define BINLOG_TYPE_CATALOG_LIST ((DWORD)(0x01020000 | (DWORD)(BINLOG_START_WORD)))
#define BINLOG_TYPE_CATALOG_HEAD ((DWORD)(0x02020000 | (DWORD)(BINLOG_START_WORD)))
#define BINLOG_TYPE_CATALOG_ITEM ((DWORD)(0x03020000 | (DWORD)(BINLOG_START_WORD)))
#define BINLOG_TYPE_DATA        ((DWORD)(0x00030000 | (DWORD)(BINLOG_START_WORD)))
#define BINLOG_TYPE_DATA_SINGLE ((DWORD)(0x01030000 | (DWORD)(BINLOG_START_WORD)))
#define BINLOG_TYPE_DATA_MULTI  ((DWORD)(0x02030000 | (DWORD)(BINLOG_START_WORD)))
#define BINLOG_TYPE_DATA_PSEUDO ((DWORD)(0x03030000 | (DWORD)(BINLOG_START_WORD)))
#define BINLOG_TYPE_DATA_OBJECT ((DWORD)(0x04030000 | (DWORD)(BINLOG_START_WORD)))
#define BINLOG_TYPE_DATA_LOC_OBJECT ((DWORD)(0x05030000 | (DWORD)(BINLOG_START_WORD)))

#define BINLOG_VERSION          ((DWORD)(0x000005ff))  // debug value for now

//
//  this is the field at the beginning of each record in the log file
//  after the text log file type record
//
typedef struct _PDHI_BINARY_LOG_RECORD_HEADER {
    DWORD    dwType;
    DWORD   dwLength;
} PDHI_BINARY_LOG_RECORD_HEADER, *PPDHI_BINARY_LOG_RECORD_HEADER;

//
// the first data record after the log file type record is
// an information record followed by the list of counters contained in this
// log file. the record length is the size of the info header record and
// all the counter info blocks in bytes.
// note that this record can occur later in the log file if the query
// is changed or the log file is appended.
//
typedef struct _PDHI_BINARY_LOG_INFO {
    LONGLONG    FileLength;         // file space allocated (optional)
    DWORD       dwLogVersion;       // version stamp
    DWORD       dwFlags;            // option flags
    LONGLONG    StartTime;
    LONGLONG    EndTime;
    LONGLONG    CatalogOffset;      // offset in file to wild card catalog
    LONGLONG    CatalogChecksum;    // checksum of catalog header
    LONGLONG    CatalogDate;        // date/time catalog was updated
    LONGLONG    FirstRecordOffset;  // pointer to first record [to read] in log
    LONGLONG    LastRecordOffset;   // pointer to last record [to read] in log
    LONGLONG    NextRecordOffset;   // pointer to where next one goes
    LONGLONG    WrapOffset;         // pointer to last byte used in file
    LONGLONG    LastUpdateTime;     // date/time last record was written
    LONGLONG    FirstDataRecordOffset; // location of first data record in file
    // makes the info struct 256 bytes
    // and leaves room for future information
    DWORD       dwReserved[38];
} PDHI_BINARY_LOG_INFO, *PPDHI_BINARY_LOG_INFO;

typedef struct _PDHI_BINARY_LOG_HEADER_RECORD {
    PDHI_BINARY_LOG_RECORD_HEADER   RecHeader;
    PDHI_BINARY_LOG_INFO            Info;
} PDHI_BINARY_LOG_HEADER_RECORD, *PPDHI_BINARY_LOG_HEADER_RECORD;

typedef struct _PDHI_LOG_COUNTER_PATH {
    // this value is in bytes used by the entire structure & buffers
    DWORD   dwLength;           // total structure Length (including strings)
    DWORD   dwFlags;            // flags that describe the counter
    DWORD   dwUserData;       // user data from PDH Counter
    DWORD   dwCounterType;      // perflib counter type value
    LONGLONG llTimeBase;        // time base (freq) used by this counter
    LONG    lDefaultScale;      // default display scaling factor
    // the following values are in BYTES from the first byte in
    // the Buffer array.
    LONG    lMachineNameOffset; // offset to start of machine name
    LONG    lObjectNameOffset;  // offset to start of object name
    LONG    lInstanceOffset;    // offset to start of instance name
    LONG    lParentOffset;      // offset to start of parent instance name
    DWORD   dwIndex;            // index value for duplicate instances
    LONG    lCounterOffset;     // offset to start of counter name
    WCHAR   Buffer[1];          // start of string storage
} PDHI_LOG_COUNTER_PATH, *PPDHI_LOG_COUNTER_PATH;

typedef struct _PDHI_LOG_CAT_ENTRY {
    DWORD    dwEntrySize;            // size of this machine\object entry
    DWORD    dwStringSize;            // size of MSZ containing instance strings
    DWORD    dwMachineObjNameOffset;    // offset from the base of this struct to the machine name
    DWORD    dwInstanceStringOffset;    // offset to the first object entry in the list
} PDHI_LOG_CAT_ENTRY, *PPDHI_LOG_CAT_ENTRY;


PDH_FUNCTION
PdhiOpenInputBinaryLog (
    IN  PPDHI_LOG   pLog
);

PDH_FUNCTION
PdhiOpenOutputBinaryLog (
    IN  PPDHI_LOG   pLog
);

PDH_FUNCTION
PdhiOpenUpdateBinaryLog (
    IN  PPDHI_LOG   pLog
);

PDH_FUNCTION
PdhiUpdateBinaryLogFileCatalog (
    IN  PPDHI_LOG   pLog
);

PDH_FUNCTION
PdhiCloseBinaryLog (
    IN  PPDHI_LOG   pLog,
    IN    DWORD        dwFlags
);

PDH_FUNCTION
PdhiGetBinaryLogCounterInfo (
    IN  PPDHI_LOG       pLog,
    IN  PPDHI_COUNTER   pCounter
);

PDH_FUNCTION
PdhiWriteBinaryLogHeader (
    IN  PPDHI_LOG   pLog,
    IN  LPCWSTR     szUserCaption
);

PDH_FUNCTION
PdhiWriteBinaryLogRecord (
    IN  PPDHI_LOG   pLog,
    IN  SYSTEMTIME  *stTimeStamp,
    IN  LPCWSTR     szUserString
);

PDH_FUNCTION
PdhiEnumMachinesFromBinaryLog (
    PPDHI_LOG   pLog,
    LPVOID      pBuffer,
    LPDWORD     lpdwBufferSize,
    BOOL        bUnicodeDest
);

PDH_FUNCTION
PdhiEnumObjectsFromBinaryLog (
    IN  PPDHI_LOG   pLog,
    IN  LPCWSTR     szMachineName,
    IN  LPVOID      mszObjectList,
    IN  LPDWORD     pcchBufferSize,
    IN  DWORD       dwDetailLevel,
    IN  BOOL        bUnicode
);

PDH_FUNCTION
PdhiEnumObjectItemsFromBinaryLog (
    IN  PPDHI_LOG          hDataSource,
    IN  LPCWSTR            szMachineName,
    IN  LPCWSTR            szObjectName,
    IN  PDHI_COUNTER_TABLE CounterTable,
    IN  DWORD              dwDetailLevel,
    IN  DWORD              dwFlags
);

PDH_FUNCTION
PdhiGetMatchingBinaryLogRecord (
    IN  PPDHI_LOG   pLog,
    IN  LONGLONG    *pStartTime,
    IN  LPDWORD     pdwIndex
);

PDH_FUNCTION
PdhiGetCounterValueFromBinaryLog (
    IN  PPDHI_LOG     hLog,
    IN  DWORD         dwIndex,
    IN  PPDHI_COUNTER pCounter
);

PDH_FUNCTION
PdhiGetTimeRangeFromBinaryLog (
    IN  PPDHI_LOG       hLog,
    IN  LPDWORD         pdwNumEntries,
    IN  PPDH_TIME_INFO  pInfo,
    IN  LPDWORD         dwBufferSize
);

PDH_FUNCTION
PdhiReadRawBinaryLogRecord (
    IN  PPDHI_LOG    pLog,
    IN  FILETIME     *ftRecord,
    IN  PPDH_RAW_LOG_RECORD     pBuffer,
    IN  LPDWORD                 pdwBufferLength
);


PDH_FUNCTION
PdhiListHeaderFromBinaryLog (
    IN  PPDHI_LOG   pLogFile,
    IN  LPVOID      pBufferArg,
    IN  LPDWORD     pcchBufferSize,
    IN  BOOL        bUnicode
);

PDH_FUNCTION
PdhiGetCounterArrayFromBinaryLog (
    IN PPDHI_LOG                        pLog,
    IN DWORD                            dwIndex,
    IN PPDHI_COUNTER                    pCounter,
    IN OUT PPDHI_RAW_COUNTER_ITEM_BLOCK     *ppValue
);

PPDHI_BINARY_LOG_RECORD_HEADER
PdhiGetSubRecord (
    IN  PPDHI_BINARY_LOG_RECORD_HEADER  pRecord,
    IN  DWORD                           dwRecordId
);

#endif   // _LOG_BIN_H_