Skip to content

Commit f67e790

Browse files
Jan WieckJan Wieck
Jan Wieck
authored and
Jan Wieck
committed
2nd try for the index tuple toast hack. This time as suggested
by Tom. Jan
1 parent a5a1288 commit f67e790

File tree

4 files changed

+108
-206
lines changed

4 files changed

+108
-206
lines changed

‎src/backend/access/common/indextuple.c

Lines changed: 47 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -9,14 +9,15 @@
99
*
1010
*
1111
* IDENTIFICATION
12-
* $Header: /cvsroot/pgsql/src/backend/access/common/indextuple.c,v 1.43 2000/04/12 17:14:37 momjian Exp $
12+
* $Header: /cvsroot/pgsql/src/backend/access/common/indextuple.c,v 1.44 2000/07/22 11:18:45 wieck Exp $
1313
*
1414
*-------------------------------------------------------------------------
1515
*/
1616

1717
#include "postgres.h"
1818

1919
#include "access/heapam.h"
20+
#include "access/tuptoaster.h"
2021
#include "access/itup.h"
2122
#include "catalog/pg_type.h"
2223

@@ -44,11 +45,40 @@ index_formtuple(TupleDesc tupleDescriptor,
4445
bool hasnull = false;
4546
uint16 tupmask = 0;
4647
int numberOfAttributes = tupleDescriptor->natts;
48+
#ifdef TOAST_INDEX_HACK
49+
Datum untoasted_value[MaxHeapAttributeNumber];
50+
bool untoasted_free[MaxHeapAttributeNumber];
51+
#endif
4752

4853
if (numberOfAttributes > INDEX_MAX_KEYS)
4954
elog(ERROR, "index_formtuple: numberOfAttributes %d > %d",
5055
numberOfAttributes, INDEX_MAX_KEYS);
5156

57+
#ifdef TOAST_INDEX_HACK
58+
for (i = 0; i < numberOfAttributes; i++)
59+
{
60+
if (null[i] != ' ' || tupleDescriptor->attrs[i]->attlen >= 0)
61+
{
62+
untoasted_value[i] = value[i];
63+
untoasted_free[i] = false;
64+
}
65+
else
66+
{
67+
if (VARATT_IS_EXTERNAL(value[i]))
68+
{
69+
untoasted_value[i] = PointerGetDatum(
70+
heap_tuple_fetch_attr(
71+
(varattrib *)DatumGetPointer(value[i])));
72+
untoasted_free[i] = true;
73+
}
74+
else
75+
{
76+
untoasted_value[i] = value[i];
77+
untoasted_free[i] = false;
78+
}
79+
}
80+
}
81+
#endif
5282
for (i = 0; i < numberOfAttributes && !hasnull; i++)
5383
{
5484
if (null[i] != ' ')
@@ -59,7 +89,11 @@ index_formtuple(TupleDesc tupleDescriptor,
5989
infomask |= INDEX_NULL_MASK;
6090

6191
hoff = IndexInfoFindDataOffset(infomask);
92+
#ifdef TOAST_INDEX_HACK
93+
size = hoff + ComputeDataSize(tupleDescriptor, untoasted_value, null);
94+
#else
6295
size = hoff + ComputeDataSize(tupleDescriptor, value, null);
96+
#endif
6397
size = MAXALIGN(size); /* be conservative */
6498

6599
tp = (char *) palloc(size);
@@ -68,11 +102,23 @@ index_formtuple(TupleDesc tupleDescriptor,
68102

69103
DataFill((char *) tp + hoff,
70104
tupleDescriptor,
105+
#ifdef TOAST_INDEX_HACK
106+
untoasted_value,
107+
#else
71108
value,
109+
#endif
72110
null,
73111
&tupmask,
74112
(hasnull ? (bits8 *) tp + sizeof(*tuple) : NULL));
75113

114+
#ifdef TOAST_INDEX_HACK
115+
for (i = 0; i < numberOfAttributes; i++)
116+
{
117+
if (untoasted_free[i])
118+
pfree(DatumGetPointer(untoasted_value[i]));
119+
}
120+
#endif
121+
76122
/*
77123
* We do this because DataFill wants to initialize a "tupmask" which
78124
* is used for HeapTuples, but we want an indextuple infomask. The

‎src/backend/access/heap/heapam.c

Lines changed: 1 addition & 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 1.81 2000/07/21 11:18:51 wieck Exp $
11+
* $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.82 2000/07/22 11:18:46 wieck Exp $
1212
*
1313
*
1414
* INTERFACE ROUTINES
@@ -1274,10 +1274,6 @@ Oid
12741274
heap_insert(Relation relation, HeapTuple tup)
12751275
{
12761276
Buffer buffer;
1277-
#ifndef TOAST_INDICES
1278-
HeapTupleHeader plaintdata = NULL;
1279-
int32 plaintlen = 0;
1280-
#endif
12811277

12821278
/* increment access statistics */
12831279
tup->tableOid = relation->rd_id;
@@ -1313,11 +1309,7 @@ heap_insert(Relation relation, HeapTuple tup)
13131309
*/
13141310
if (HeapTupleHasExtended(tup) ||
13151311
(MAXALIGN(tup->t_len) > (MaxTupleSize / 4)))
1316-
#ifdef TOAST_INDICES
13171312
heap_tuple_toast_attrs(relation, tup, NULL);
1318-
#else
1319-
heap_tuple_toast_attrs(relation, tup, NULL, &plaintdata, &plaintlen);
1320-
#endif
13211313
#endif
13221314

13231315
/* Find buffer for this tuple */
@@ -1355,20 +1347,6 @@ heap_insert(Relation relation, HeapTuple tup)
13551347
if (IsSystemRelationName(RelationGetRelationName(relation)))
13561348
RelationMark4RollbackHeapTuple(relation, tup);
13571349

1358-
#ifndef TOAST_INDICES
1359-
if (plaintdata != NULL && tup->t_data != plaintdata)
1360-
{
1361-
if (tup->t_datamcxt != NULL && (char *) (tup->t_data) !=
1362-
((char *) tup + HEAPTUPLESIZE))
1363-
{
1364-
MemoryContext oldcxt = MemoryContextSwitchTo(tup->t_datamcxt);
1365-
pfree(tup->t_data);
1366-
MemoryContextSwitchTo(oldcxt);
1367-
}
1368-
tup->t_data = plaintdata;
1369-
tup->t_len = plaintlen;
1370-
}
1371-
#endif
13721350
return tup->t_data->t_oid;
13731351
}
13741352

@@ -1483,11 +1461,7 @@ heap_delete(Relation relation, ItemPointer tid, ItemPointer ctid)
14831461
* ----------
14841462
*/
14851463
if (HeapTupleHasExtended(&tp))
1486-
#ifdef TOAST_INDICES
14871464
heap_tuple_toast_attrs(relation, NULL, &(tp));
1488-
#else
1489-
heap_tuple_toast_attrs(relation, NULL, &(tp), NULL, NULL);
1490-
#endif
14911465
#endif
14921466

14931467
LockBuffer(buffer, BUFFER_LOCK_UNLOCK);
@@ -1512,10 +1486,6 @@ heap_update(Relation relation, ItemPointer otid, HeapTuple newtup,
15121486
PageHeader dp;
15131487
Buffer buffer, newbuf;
15141488
int result;
1515-
#ifndef TOAST_INDICES
1516-
HeapTupleHeader plaintdata = NULL;
1517-
int32 plaintlen = 0;
1518-
#endif
15191489

15201490
newtup->tableOid = relation->rd_id;
15211491
/* increment access statistics */
@@ -1604,11 +1574,7 @@ heap_update(Relation relation, ItemPointer otid, HeapTuple newtup,
16041574
if (HeapTupleHasExtended(&oldtup) ||
16051575
HeapTupleHasExtended(newtup) ||
16061576
(MAXALIGN(newtup->t_len) > (MaxTupleSize / 4)))
1607-
#ifdef TOAST_INDICES
16081577
heap_tuple_toast_attrs(relation, newtup, &oldtup);
1609-
#else
1610-
heap_tuple_toast_attrs(relation, newtup, &oldtup, &plaintdata, &plaintlen);
1611-
#endif
16121578
#endif
16131579

16141580
/* Find buffer for new tuple */
@@ -1671,21 +1637,6 @@ heap_update(Relation relation, ItemPointer otid, HeapTuple newtup,
16711637
RelationInvalidateHeapTuple(relation, &oldtup);
16721638
RelationMark4RollbackHeapTuple(relation, newtup);
16731639

1674-
#ifndef TOAST_INDICES
1675-
if (plaintdata != NULL && newtup->t_data != plaintdata)
1676-
{
1677-
if (newtup->t_datamcxt != NULL && (char *) (newtup->t_data) !=
1678-
((char *) newtup + HEAPTUPLESIZE))
1679-
{
1680-
MemoryContext oldcxt = MemoryContextSwitchTo(newtup->t_datamcxt);
1681-
pfree(newtup->t_data);
1682-
MemoryContextSwitchTo(oldcxt);
1683-
}
1684-
newtup->t_data = plaintdata;
1685-
newtup->t_len = plaintlen;
1686-
}
1687-
#endif
1688-
16891640
return HeapTupleMayBeUpdated;
16901641
}
16911642

0 commit comments

Comments
 (0)
pFad - Phonifier reborn

Pfad - The Proxy pFad of © 2024 Garber Painting. All rights reserved.

Note: This service is not intended for secure transactions such as banking, social media, email, or purchasing. Use at your own risk. We assume no liability whatsoever for broken pages.


Alternative Proxies:

Alternative Proxy

pFad Proxy

pFad v3 Proxy

pFad v4 Proxy