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vadim4ovadim4o
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WAL misc
1 parent 4b70629 commit db2faa9

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7 files changed

+281
-168
lines changed

7 files changed

+281
-168
lines changed

‎src/backend/access/heap/heapam.c‎

Lines changed: 125 additions & 50 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.90 2000/10/21 15:43:14 vadim Exp $
11+
* $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.91 2000/10/24 09:56:07 vadim Exp $
1212
*
1313
*
1414
* INTERFACE ROUTINES
@@ -93,9 +93,13 @@ void heap_redo(XLogRecPtr lsn, XLogRecord *record);
9393
void heap_undo(XLogRecPtr lsn, XLogRecord *record);
9494
void heap_desc(char *buf, uint8 xl_info, char* rec);
9595

96+
XLogRecPtr log_heap_move(Relation reln, ItemPointerData from, HeapTuple newtup);
97+
9698
/* comments are in heap_update */
9799
static xl_heaptid _locked_tuple_;
98100
static void _heap_unlock_tuple(void *data);
101+
static XLogRecPtr log_heap_update(Relation reln, ItemPointerData from,
102+
HeapTuple newtup, bool move);
99103

100104
static void HeapPageCleanup(Buffer buffer);
101105

@@ -1706,22 +1710,8 @@ heap_update(Relation relation, ItemPointer otid, HeapTuple newtup,
17061710
#ifdef XLOG
17071711
/* XLOG stuff */
17081712
{
1709-
xl_heap_update xlrec;
1710-
XLogRecPtr recptr;
1711-
1712-
xlrec.target.node = relation->rd_node;
1713-
xlrec.target.cid = GetCurrentCommandId();
1714-
xlrec.target.tid = oldtup.t_self;
1715-
xlrec.newtid = newtup->t_self;
1716-
xlrec.t_natts = newtup->t_data->t_natts;
1717-
xlrec.t_oid = newtup->t_data->t_oid;
1718-
xlrec.t_hoff = newtup->t_data->t_hoff;
1719-
xlrec.mask = newtup->t_data->t_infomask;
1720-
1721-
recptr = XLogInsert(RM_HEAP_ID, XLOG_HEAP_UPDATE,
1722-
(char*) &xlrec, SizeOfHeapUpdate,
1723-
(char*) newtup->t_data + offsetof(HeapTupleHeaderData, t_bits),
1724-
newtup->t_len - offsetof(HeapTupleHeaderData, t_bits));
1713+
XLogRecPtr recptr = log_heap_update(relation,
1714+
oldtup.t_self, newtup, false);
17251715

17261716
if (newbuf != buffer)
17271717
{
@@ -2019,6 +2009,54 @@ heap_restrpos(HeapScanDesc scan)
20192009

20202010
#ifdef XLOG
20212011

2012+
static XLogRecPtr
2013+
log_heap_update(Relation reln, ItemPointerData from,
2014+
HeapTuple newtup, bool move)
2015+
{
2016+
char tbuf[sizeof(xl_heap_update) + 2 * sizeof(TransactionId)];
2017+
xl_heap_update *xlrec = (xl_heap_update*) tbuf;
2018+
int hsize = SizeOfHeapUpdate;
2019+
XLogRecPtr recptr;
2020+
2021+
xlrec->target.node = reln->rd_node;
2022+
xlrec->target.tid = from;
2023+
xlrec->newtid = newtup->t_self;
2024+
xlrec->t_natts = newtup->t_data->t_natts;
2025+
xlrec->t_oid = newtup->t_data->t_oid;
2026+
xlrec->t_hoff = newtup->t_data->t_hoff;
2027+
xlrec->mask = newtup->t_data->t_infomask;
2028+
2029+
if (move) /* remember xmin & xmax */
2030+
{
2031+
TransactionId xmax;
2032+
2033+
xlrec->target.cid = (CommandId) newtup->t_data->t_xmin;
2034+
if (newtup->t_data->t_infomask & HEAP_XMAX_INVALID ||
2035+
newtup->t_data->t_infomask & HEAP_MARKED_FOR_UPDATE)
2036+
xmax = InvalidTransactionId;
2037+
else
2038+
xmax = newtup->t_data->t_xmax;
2039+
memcpy(tbuf + hsize, &xmax, sizeof(TransactionId));
2040+
hsize += sizeof(TransactionId);
2041+
}
2042+
else
2043+
xlrec->target.cid = GetCurrentCommandId();
2044+
2045+
recptr = XLogInsert(RM_HEAP_ID,
2046+
(move) ? XLOG_HEAP_MOVE : XLOG_HEAP_UPDATE,
2047+
tbuf, hsize,
2048+
(char*) newtup->t_data + offsetof(HeapTupleHeaderData, t_bits),
2049+
newtup->t_len - offsetof(HeapTupleHeaderData, t_bits));
2050+
2051+
return(recptr);
2052+
}
2053+
2054+
XLogRecPtr
2055+
log_heap_move(Relation reln, ItemPointerData from, HeapTuple newtup)
2056+
{
2057+
return(log_heap_update(reln, from, newtup, true));
2058+
}
2059+
20222060
static void
20232061
heap_xlog_delete(bool redo, XLogRecPtr lsn, XLogRecord *record)
20242062
{
@@ -2159,6 +2197,7 @@ heap_xlog_insert(bool redo, XLogRecPtr lsn, XLogRecord *record)
21592197
htup->t_hoff = xlrec->t_hoff;
21602198
htup->t_xmin = record->xl_xid;
21612199
htup->t_cmin = xlrec->target.cid;
2200+
htup->t_xmax = htup->t_cmax = 0;
21622201
htup->t_infomask = HEAP_XMAX_INVALID | HEAP_XMIN_COMMITTED | xlrec->mask;
21632202

21642203
offnum = PageAddItem(page, (Item)htup, newlen,
@@ -2210,8 +2249,11 @@ heap_xlog_insert(bool redo, XLogRecPtr lsn, XLogRecord *record)
22102249

22112250
}
22122251

2252+
/*
2253+
* Handles UPDATE & MOVE
2254+
*/
22132255
static void
2214-
heap_xlog_update(bool redo, XLogRecPtr lsn, XLogRecord *record)
2256+
heap_xlog_update(bool redo, XLogRecPtr lsn, XLogRecord *record, bool move)
22152257
{
22162258
xl_heap_update *xlrec = (xl_heap_update*) XLogRecGetData(record);
22172259
Relation reln = XLogOpenRelation(redo, RM_HEAP_ID, xlrec->target.node);
@@ -2282,26 +2324,46 @@ heap_xlog_update(bool redo, XLogRecPtr lsn, XLogRecord *record)
22822324

22832325
if (redo)
22842326
{
2285-
htup->t_xmax = record->xl_xid;
2286-
htup->t_cmax = xlrec->target.cid;
2287-
htup->t_infomask &= ~(HEAP_XMAX_INVALID | HEAP_MARKED_FOR_UPDATE);
2288-
htup->t_infomask |= HEAP_XMAX_COMMITTED;
2327+
if (move)
2328+
{
2329+
TransactionIdStore(record->xl_xid, (TransactionId *) &(htup->t_cmin));
2330+
htup->t_infomask &=
2331+
~(HEAP_XMIN_COMMITTED | HEAP_XMIN_INVALID | HEAP_MOVED_IN);
2332+
htup->t_infomask |= HEAP_MOVED_OFF;
2333+
}
2334+
else
2335+
{
2336+
htup->t_xmax = record->xl_xid;
2337+
htup->t_cmax = xlrec->target.cid;
2338+
htup->t_infomask &= ~(HEAP_XMAX_COMMITTED |
2339+
HEAP_XMAX_INVALID | HEAP_MARKED_FOR_UPDATE);
2340+
}
22892341
PageSetLSN(page, lsn);
22902342
PageSetSUI(page, ThisStartUpID);
22912343
UnlockAndWriteBuffer(buffer);
22922344
goto newt;
22932345
}
22942346

22952347
/* undo... is it our tuple ? */
2296-
if (htup->t_xmax != record->xl_xid || htup->t_cmax != xlrec->target.cid)
2348+
if ((! move && (htup->t_xmax != record->xl_xid ||
2349+
htup->t_cmax != xlrec->target.cid)) ||
2350+
xlrec->target.cid != (CommandId) htup->t_xmin ||
2351+
htup->t_cmin != (CommandId) record->xl_xid)
22972352
{
22982353
if (!InRecovery)
22992354
elog(STOP, "heap_update_undo: invalid old tuple in rollback");
23002355
UnlockAndReleaseBuffer(buffer);
23012356
}
23022357
else /* undo */
23032358
{
2304-
htup->t_infomask |= HEAP_XMAX_INVALID;
2359+
if (move)
2360+
{
2361+
htup->t_infomask &= ~(HEAP_XMIN_INVALID |
2362+
HEAP_MOVED_IN | HEAP_MOVED_OFF);
2363+
htup->t_infomask |= HEAP_XMIN_COMMITTED;
2364+
}
2365+
else
2366+
htup->t_infomask |= HEAP_XMAX_INVALID;
23052367
UnlockAndWriteBuffer(buffer);
23062368
}
23072369

@@ -2329,25 +2391,45 @@ newt:;
23292391

23302392
if (redo)
23312393
{
2332-
char tbuf[MaxTupleSize];
2333-
uint32 newlen = record->xl_len - SizeOfHeapUpdate;
2394+
char tbuf[MaxTupleSize];
2395+
int hsize;
2396+
uint32 newlen;
23342397

23352398
if (XLByteLE(lsn, PageGetLSN(page))) /* changes are applied */
23362399
{
23372400
UnlockAndReleaseBuffer(buffer);
23382401
return;
23392402
}
23402403

2404+
hsize = SizeOfHeapUpdate;
2405+
if (move)
2406+
hsize += sizeof(TransactionId);
2407+
newlen = record->xl_len - hsize;
2408+
23412409
htup = (HeapTupleHeader) tbuf;
23422410
memcpy(tbuf + offsetof(HeapTupleHeaderData, t_bits),
2343-
(char*)xlrec + SizeOfHeapUpdate, newlen);
2411+
(char*)xlrec + hsize, newlen);
23442412
newlen += offsetof(HeapTupleHeaderData, t_bits);
23452413
htup->t_oid = xlrec->t_oid;
23462414
htup->t_natts = xlrec->t_natts;
23472415
htup->t_hoff = xlrec->t_hoff;
2348-
htup->t_xmin = record->xl_xid;
2349-
htup->t_cmin = xlrec->target.cid;
2350-
htup->t_infomask = HEAP_XMAX_INVALID | HEAP_XMIN_COMMITTED | xlrec->mask;
2416+
if (move)
2417+
{
2418+
htup->t_xmin = (TransactionId) xlrec->target.cid;
2419+
memcpy(&(htup->t_xmax),
2420+
(char*)xlrec + SizeOfHeapUpdate, sizeof(TransactionId));
2421+
htup->t_infomask = xlrec->mask;
2422+
htup->t_infomask &= ~(HEAP_XMIN_COMMITTED |
2423+
HEAP_XMIN_INVALID | HEAP_MOVED_OFF);
2424+
htup->t_infomask |= HEAP_MOVED_IN;
2425+
}
2426+
else
2427+
{
2428+
htup->t_xmin = record->xl_xid;
2429+
htup->t_cmin = xlrec->target.cid;
2430+
htup->t_xmax = htup->t_cmax = 0;
2431+
htup->t_infomask = HEAP_XMAX_INVALID | xlrec->mask;
2432+
}
23512433

23522434
offnum = PageAddItem(page, (Item)htup, newlen,
23532435
ItemPointerGetOffsetNumber(&(xlrec->newtid)),
@@ -2385,7 +2467,10 @@ newt:;
23852467

23862468
/* is it our tuple ? */
23872469
Assert(PageGetSUI(page) == ThisStartUpID);
2388-
if (htup->t_xmin != record->xl_xid || htup->t_cmin != xlrec->target.cid)
2470+
if ((! move && (htup->t_xmin != record->xl_xid ||
2471+
htup->t_cmin != xlrec->target.cid)) ||
2472+
xlrec->target.cid != (CommandId) htup->t_xmin ||
2473+
htup->t_cmin != (CommandId) record->xl_xid)
23892474
{
23902475
if (!InRecovery)
23912476
elog(STOP, "heap_update_undo: invalid new tuple in rollback");
@@ -2448,11 +2533,9 @@ void heap_redo(XLogRecPtr lsn, XLogRecord *record)
24482533
else if (info == XLOG_HEAP_DELETE)
24492534
heap_xlog_delete(true, lsn, record);
24502535
else if (info == XLOG_HEAP_UPDATE)
2451-
heap_xlog_update(true, lsn, record);
2452-
#ifdef NOT_USED
2536+
heap_xlog_update(true, lsn, record, false);
24532537
else if (info == XLOG_HEAP_MOVE)
2454-
heap_xlog_move(true, lsn, record);
2455-
#endif
2538+
heap_xlog_update(true, lsn, record, true);
24562539
else
24572540
elog(STOP, "heap_redo: unknown op code %u", info);
24582541
}
@@ -2466,11 +2549,9 @@ void heap_undo(XLogRecPtr lsn, XLogRecord *record)
24662549
else if (info == XLOG_HEAP_DELETE)
24672550
heap_xlog_delete(false, lsn, record);
24682551
else if (info == XLOG_HEAP_UPDATE)
2469-
heap_xlog_update(false, lsn, record);
2470-
#ifdef NOT_USED
2552+
heap_xlog_update(false, lsn, record, false);
24712553
else if (info == XLOG_HEAP_MOVE)
2472-
heap_xlog_move(false, lsn, record);
2473-
#endif
2554+
heap_xlog_update(false, lsn, record, true);
24742555
else
24752556
elog(STOP, "heap_undo: unknown op code %u", info);
24762557
}
@@ -2509,19 +2590,13 @@ heap_desc(char *buf, uint8 xl_info, char* rec)
25092590
strcat(buf, "delete: ");
25102591
out_target(buf, &(xlrec->target));
25112592
}
2512-
else if (info == XLOG_HEAP_UPDATE)
2593+
else if (info == XLOG_HEAP_UPDATE || info == XLOG_HEAP_MOVE)
25132594
{
25142595
xl_heap_update *xlrec = (xl_heap_update*) rec;
2515-
strcat(buf, "update: ");
2516-
out_target(buf, &(xlrec->target));
2517-
sprintf(buf + strlen(buf), "; new %u/%u",
2518-
ItemPointerGetBlockNumber(&(xlrec->newtid)),
2519-
ItemPointerGetOffsetNumber(&(xlrec->newtid)));
2520-
}
2521-
else if (info == XLOG_HEAP_MOVE)
2522-
{
2523-
xl_heap_move *xlrec = (xl_heap_move*) rec;
2524-
strcat(buf, "move: ");
2596+
if (info == XLOG_HEAP_UPDATE)
2597+
strcat(buf, "update: ");
2598+
else
2599+
strcat(buf, "move: ");
25252600
out_target(buf, &(xlrec->target));
25262601
sprintf(buf + strlen(buf), "; new %u/%u",
25272602
ItemPointerGetBlockNumber(&(xlrec->newtid)),

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