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redo/undo support functions and cleanups.

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This commit is contained in:
Vadim B. Mikheev
2000-10-20 11:01:21 +00:00
parent e18a862d46
commit b58c0411ba
15 changed files with 726 additions and 167 deletions
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7
src/include/access/htup.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: htup.h,v 1.35 2000/09/07 09:58:35 vadim Exp $
* $Id: htup.h,v 1.36 2000/10/20 11:01:14 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -95,7 +95,7 @@ typedef struct xl_heap_delete
xl_heaptid target; /* deleted tuple id */
} xl_heap_delete;
#define SizeOfHeapDelete (offsetof(xl_heaptid, tid) + SizeOfIptrData))
#define SizeOfHeapDelete (offsetof(xl_heaptid, tid) + SizeOfIptrData)
/* This is what we need to know about insert - 26 + data */
typedef struct xl_heap_insert
@@ -111,12 +111,13 @@ typedef struct xl_heap_insert
#define SizeOfHeapInsert (offsetof(xl_heap_insert, mask) + sizeof(uint8))
/* This is what we need to know about update - 28 + data */
/* This is what we need to know about update - 32 + data */
typedef struct xl_heap_update
{
xl_heaptid target; /* deleted tuple id */
ItemPointerData newtid; /* new inserted tuple id */
/* something from header of new tuple version */
Oid t_oid;
int16 t_natts;
uint8 t_hoff;
uint8 mask; /* low 8 bits of t_infomask */

34
src/include/access/xact.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: xact.h,v 1.27 2000/07/28 01:04:40 tgl Exp $
* $Id: xact.h,v 1.28 2000/10/20 11:01:14 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -78,6 +78,35 @@ typedef TransactionStateData *TransactionState;
(*((TransactionId*) (dest)) = NullTransactionId)
#ifdef XLOG
/*
* XLOG allows to store some information in high 4 bits of log
* record xl_info field
*/
#define XLOG_XACT_COMMIT 0x00
#define XLOG_XACT_ABORT 0x20
typedef struct xl_xact_commit
{
time_t xtime;
/*
* Array of RelFileNode-s to drop may follow
* at the end of struct
*/
} xl_xact_commit;
#define SizeOfXactCommit ((offsetof(xl_xact_commit, xtime) + sizeof(time_t)))
typedef struct xl_xact_abort
{
time_t xtime;
} xl_xact_abort;
#define SizeOfXactAbort ((offsetof(xl_xact_abort, xtime) + sizeof(time_t)))
#endif
/* ----------------
* extern definitions
* ----------------
@@ -108,6 +137,9 @@ extern void AbortOutOfAnyTransaction(void);
extern TransactionId DisabledTransactionId;
extern void XactPushRollback(void (*func) (void *), void* data);
extern void XactPopRollback(void);
/* defined in xid.c */
extern Datum xidin(PG_FUNCTION_ARGS);
extern Datum xidout(PG_FUNCTION_ARGS);

12
src/include/access/xlog.h
View File

@@ -72,12 +72,24 @@ typedef XLogPageHeaderData *XLogPageHeader;
#define XLP_FIRST_IS_SUBRECORD 0x0001
#define XLByteLT(left, right) \
(right.xlogid > left.xlogid || \
(right.xlogid == left.xlogid && right.xrecoff > left.xrecoff))
#define XLByteLE(left, right) \
(right.xlogid > left.xlogid || \
(right.xlogid == left.xlogid && right.xrecoff >= left.xrecoff))
#define XLByteEQ(left, right) \
(right.xlogid == left.xlogid && right.xrecoff == left.xrecoff)
/*
* StartUpID (SUI) - system startups counter.
* It's to allow removing pg_log after shutdown.
*/
typedef uint32 StartUpID;
extern StartUpID ThisStartUpID;
extern bool InRecovery;
extern XLogRecPtr XLogInsert(RmgrId rmid, uint8 info,
char *hdr, uint32 hdrlen,