92 lines
3.4 KiB
C
92 lines
3.4 KiB
C
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/* critical section guards szDatabaseName and fWait,
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/* fWait gaurds hf open and close
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/* fLoggable is fFALSE if logging is currently OFF for database
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/* fDBLoggable FALSE if logging is always OFF for database
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/* logged modifications counter for database
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/**/
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typedef struct _fmp /* FILE MAP for database. */
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{
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HANDLE hf; /* File handle for read/write the file */
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BYTE *szDatabaseName; /* This database file name */
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BYTE *szRestorePath; /* Database restored to. */
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INT ffmp; /* Flags for FMP */
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CRIT critExtendDB;
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PIB *ppib; /* Exclusive open session */
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INT cdbidExclusive; /* Exclusive open count */
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BOOL fLogOn; /* Logging is on/off? used in createdb */
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BOOL fDBLoggable; /* Cache of pbRoot->loggable */
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ULONG ulDBTime; /* Timestamp from DB operations. */
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ULONG ulDBTimeCurrent; /* Timestamp from DB redo operations. */
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CHAR *szFirst; /* first db name shown in log redo. */
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BOOL fLogOnFirst; /* the status of first attached db */
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INT cDetach; /* detach operation counters. for Redo */
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HANDLE hfPatch; /* File handle for patch file */
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INT cpage; /* patch page count. */
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PGNO pgnoCopied; /* during backup, last copied page's # */
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/* 0 - no back up is going on. */
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#ifdef DEBUG
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LONG lBFFlushPattern; /* in-complete flush to simulate soft crash */
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BOOL fPrevVersion; /* previous release version database */
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#endif
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} FMP;
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extern FMP * __near rgfmp;
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/* flags for dbid
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/**/
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#define ffmpWait (1<<0)
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#define ffmpExclusive (1<<1)
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#define ffmpReadOnly (1<<2)
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#define ffmpAttached (1<<3)
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#define ffmpExtendingDB (1<<4)
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#ifdef DEBUG
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#define ffmpFlush (1<<5)
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#endif
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#define FDBIDWait( dbid ) ( rgfmp[dbid].ffmp & ffmpWait )
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#define DBIDSetWait( dbid ) ( rgfmp[dbid].ffmp |= ffmpWait )
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#define DBIDResetWait( dbid ) ( rgfmp[dbid].ffmp &= ~(ffmpWait) )
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#define FDBIDExclusive( dbid ) ( rgfmp[dbid].ffmp & ffmpExclusive )
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#define FDBIDExclusiveByAnotherSession( dbid, ppib ) \
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( ( FDBIDExclusive( dbid ) ) \
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&& ( rgfmp[dbid].ppib != ppib ) )
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#define FDBIDExclusiveBySession( dbid, ppib ) \
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( ( FDBIDExclusive( dbid ) ) \
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&& ( rgfmp[dbid].ppib == ppib ) )
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#define DBIDSetExclusive( dbid, ppib ) \
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rgfmp[dbid].ffmp |= ffmpExclusive; \
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rgfmp[dbid].ppib = ppib;
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#define DBIDResetExclusive( dbid ) ( rgfmp[dbid].ffmp &= ~(ffmpExclusive) )
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#define FDBIDReadOnly( dbid ) ( rgfmp[dbid].ffmp & ffmpReadOnly )
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#define DBIDSetReadOnly( dbid ) ( rgfmp[dbid].ffmp |= ffmpReadOnly )
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#define DBIDResetReadOnly( dbid ) ( rgfmp[dbid].ffmp &= ~(ffmpReadOnly) )
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#define FDBIDAttached( dbid ) ( rgfmp[dbid].ffmp & ffmpAttached )
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#define DBIDSetAttached( dbid ) ( rgfmp[dbid].ffmp |= ffmpAttached )
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#define DBIDResetAttached( dbid ) ( rgfmp[dbid].ffmp &= ~(ffmpAttached) )
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#define FDBIDExtendingDB( dbid ) ( rgfmp[dbid].ffmp & ffmpExtendingDB )
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#define DBIDSetExtendingDB( dbid ) ( rgfmp[dbid].ffmp |= ffmpExtendingDB )
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#define DBIDResetExtendingDB( dbid) ( rgfmp[dbid].ffmp &= ~(ffmpExtendingDB) )
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#define FDBIDFlush( dbid ) ( rgfmp[dbid].ffmp & ffmpFlush )
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#define DBIDSetFlush( dbid ) ( rgfmp[dbid].ffmp |= ffmpFlush )
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#define DBIDResetFlush( dbid ) ( rgfmp[dbid].ffmp &= ~(ffmpFlush) )
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#ifdef MULTI_PROCESS
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HANDLE Hf(DBID dbid);
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extern HANDLE *rghfUser;
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extern HANDLE __near hfLog;
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#else /* !MULTI_PROCESS */
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#define Hf(dbid) (rgfmp[dbid].hf)
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#endif
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