fio_permDBinfo_t Struct Reference
[Classes for large file i/o, relative file, and DataBase]

#include <fio_PermDBinfoMgr.h>

Collaboration diagram for fio_permDBinfo_t:

Detailed Description

Definition at line 44 of file fio_PermDBinfoMgr.h.


Public Member Functions
void IVD_FILEIO_DECL_d	Init (fio_DataBaseID_t a_DataBaseID, ivd_Time32_t a_JourDate)
void	CheckValidation (fio_DataBaseID_t a_dbID)
bool	IsSynchonized ()
Public Attributes
UInt16_t	recordStructVersion
UInt16_t	recordSize
fio_DataBaseID_t	DataBaseID
	IVD system unique number. In case of FSC PartitionID is used.
ivd_Time32_t	JourDate
	Time of journal file creation.
ivd_TransNumber_t	LastTransNumber
	Which transaction is already committed. It's reset after archive.
ivd_FileID_t	LastJourFileID
	Journal file ID, used to know into which jourfile is last transaction commited.
ivd_FilePosition_t	PostTransPosition
	pointer to the end of last transaction commited
ivd_FileID_t	LastSyncJourFileID
	Last synchronization Journal file ID.
ivd_FilePosition_t	LastSyncPosition
	Last synchronization pointer into journal file.
UInt32_t	ArchivedSyncJourFileID
	Archived journal File ID.
ivd_FilePosition_t	ArchivedSyncPosition
	Archived Sync position.
	log_CLASSID_m
Friends
IVD_FILEIO_DECL_d ostream &	operator<< (ostream &a_os, fio_permDBinfo_t &a_pdbi)

Member Function Documentation

void fio_permDBinfo_t::Init	(	fio_DataBaseID_t	a_DataBaseID,
		ivd_Time32_t	a_JourDate
	)

Definition at line 60 of file fio_permDBinfoMgr.cpp.

References ArchivedSyncJourFileID, ArchivedSyncPosition, DataBaseID, fio_PERM_DB_INFO_STRUCT_VERSION_d, JourDate, LastJourFileID, LastSyncJourFileID, LastSyncPosition, LastTransNumber, log_FUNC_m, PostTransPosition, recordSize, and recordStructVersion.

Referenced by ClearPDBI(), and fio_PermDBinfoMgr::fio_PermDBinfoMgr().

00066           {
00067     log_FUNC_m(Init);
00068 
00069     recordStructVersion = fio_PERM_DB_INFO_STRUCT_VERSION_d;
00070     recordSize          = sizeof(fio_permDBinfo_t);
00071     DataBaseID          = a_DataBaseID;
00072     JourDate            = a_JourDate;
00073     LastTransNumber         = 0;
00074     LastJourFileID          = 0;
00075     PostTransPosition       = 0;
00076     LastSyncJourFileID      = 0;
00077     LastSyncPosition        = 0;
00078     ArchivedSyncJourFileID        = 0;
00079     ArchivedSyncPosition = 0;
00080 
00081 
00082 //    LastTransNumber     = a_LastTransNumber;
00083 
00084 }

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void fio_permDBinfo_t::CheckValidation ( fio_DataBaseID_t a_dbID )

Definition at line 89 of file fio_permDBinfoMgr.cpp.

References DataBaseID, dbg_LOW, fio_PERM_DB_INFO_STRUCT_VERSION_d, ie_PERM_DB_INFO_HEADER_INV, ivd_Error, log_DBG_m, log_FUNC_m, recordSize, and recordStructVersion.

Referenced by fio_PermDBinfoMgr::fio_PermDBinfoMgr().

00089                                                               {
00090     log_FUNC_m(CheckValidation);
00091     
00092     if (recordStructVersion != fio_PERM_DB_INFO_STRUCT_VERSION_d) {
00093         throw ivd_Error(ie_PERM_DB_INFO_HEADER_INV, 
00094             "Record structure version mismatch.", true);
00095     }
00096     
00097     if (recordSize != sizeof(fio_permDBinfo_t) ) {
00098         throw ivd_Error(ie_PERM_DB_INFO_HEADER_INV, 
00099             "Record size mismatch.", true);
00100     }
00101 
00102     if (!(DataBaseID == a_dbID)) {
00103         log_DBG_m(dbg_LOW,"DataBaseID:" << DataBaseID <<
00104                             " a_dbID:" << a_dbID);
00105 
00106         throw ivd_Error(ie_PERM_DB_INFO_HEADER_INV, 
00107             "Database ID mismatch.", true);
00108     }
00109 }

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bool fio_permDBinfo_t::IsSynchonized ( ) [inline]

Definition at line 53 of file fio_PermDBinfoMgr.h.

References LastJourFileID, LastSyncJourFileID, LastSyncPosition, and PostTransPosition.

00053                          {
00054         return (   (LastSyncPosition   == PostTransPosition)
00055                &&  (LastSyncJourFileID == LastJourFileID));
00056     };

Friends And Related Function Documentation

IVD_FILEIO_DECL_d ostream& operator<<	(	ostream &	a_os,
		fio_permDBinfo_t &	a_pdbi
	)			`[friend]`

Definition at line 218 of file fio_permDBinfoMgr.cpp.

00218                                                               {
00219     cmn_Time tjd(a_pdbi.JourDate, 0);
00220     
00221     a_os << "***** Permanent Database Information ***************"              << endl;
00222     a_os << "Structure version          = " << a_pdbi.recordStructVersion  << endl;
00223     a_os << "Record size                = " << a_pdbi.recordSize  << endl;
00224     a_os << "Database ID                = " << a_pdbi.DataBaseID  << endl;
00225     a_os << "Journal date               = " << tjd.Time2YMDhms()  << endl;
00226     a_os << "Num. of last trans. in DB  = " << a_pdbi.LastTransNumber  << endl;
00227     a_os << "Last journal file ID       = 0x" << hex << a_pdbi.LastJourFileID << dec << endl;
00228     a_os << "Pos. after last trans in DB= " << a_pdbi.PostTransPosition  << endl;
00229     a_os << "Last jou fileID after sync = 0x" << hex << a_pdbi.LastSyncJourFileID << dec << endl;
00230     a_os << "Pos. where last sync occure= " << a_pdbi.LastSyncPosition  << endl;
00231     a_os << "Archive sync jour file ID  = 0x" << hex << a_pdbi.ArchivedSyncJourFileID << dec << endl;
00232     a_os << "Archive sync position      = " << a_pdbi.ArchivedSyncPosition  << endl;
00233     a_os << "***** End Of Permanent Database Information ********"              << endl;
00234     return a_os;
00235 }

Member Data Documentation

UInt16_t fio_permDBinfo_t::recordStructVersion

Definition at line 56 of file fio_PermDBinfoMgr.h.

Referenced by CheckValidation(), Init(), main(), and operator<<().

UInt16_t fio_permDBinfo_t::recordSize

Definition at line 59 of file fio_PermDBinfoMgr.h.

Referenced by CheckValidation(), Init(), main(), and operator<<().

fio_DataBaseID_t fio_permDBinfo_t::DataBaseID

IVD system unique number. In case of FSC PartitionID is used.

Definition at line 61 of file fio_PermDBinfoMgr.h.

Referenced by CheckValidation(), ClearPDBI(), fio_PermDBinfoMgr::GetDataBaseID(), Init(), fio_PermJourInfo_t::Init(), main(), and operator<<().

ivd_Time32_t fio_permDBinfo_t::JourDate

Time of journal file creation.

Definition at line 64 of file fio_PermDBinfoMgr.h.

Referenced by fio_PermDBinfoMgr::GetJourDate(), Init(), fio_PermJourInfo_t::Init(), main(), operator<<(), and fio_PermDBinfoMgr::SetJourDate().

ivd_TransNumber_t fio_permDBinfo_t::LastTransNumber

Which transaction is already committed. It's reset after archive.

Definition at line 67 of file fio_PermDBinfoMgr.h.

Referenced by fio_PermDBinfoMgr::GetLastTransNumber(), Init(), main(), operator<<(), and fio_PermDBinfoMgr::SetLastTransaction().

ivd_FileID_t fio_permDBinfo_t::LastJourFileID

Journal file ID, used to know into which jourfile is last transaction commited.

Definition at line 70 of file fio_PermDBinfoMgr.h.

Referenced by fio_PermDBinfoMgr::GetLastJourFileID(), Init(), IsSynchonized(), main(), operator<<(), and fio_PermDBinfoMgr::SetLastTransaction().

ivd_FilePosition_t fio_permDBinfo_t::PostTransPosition

pointer to the end of last transaction commited

Definition at line 73 of file fio_PermDBinfoMgr.h.

Referenced by fio_PermDBinfoMgr::GetPostTransPosition(), Init(), IsSynchonized(), main(), operator<<(), and fio_PermDBinfoMgr::SetLastTransaction().

ivd_FileID_t fio_permDBinfo_t::LastSyncJourFileID

Last synchronization Journal file ID.

The last sync info is useful for startup while UV buffers need to be created. There is no UV in buffer at sync time. Thus, traversing journal file could be startet at lastsync pointers.

Definition at line 80 of file fio_PermDBinfoMgr.h.

Referenced by fio_PermDBinfoMgr::GetLastSyncJourFileID(), Init(), IsSynchonized(), main(), operator<<(), and fio_PermDBinfoMgr::SetLastSyncPosition().