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Commitdd218ae

Browse files
committed
Remove the t_datamcxt field of HeapTupleData. This was introduced for
the convenience of tuptoaster.c and is no longer needed, so may as wellget rid of some small amount of overhead.
1 parent40314f2 commitdd218ae

File tree

13 files changed

+24
-66
lines changed

13 files changed

+24
-66
lines changed

‎src/backend/access/common/heaptuple.c‎

Lines changed: 1 addition & 11 deletions
Original file line numberDiff line numberDiff line change
@@ -16,7 +16,7 @@
1616
*
1717
*
1818
* IDENTIFICATION
19-
* $PostgreSQL: pgsql/src/backend/access/common/heaptuple.c,v 1.102 2005/10/19 22:30:30 tgl Exp $
19+
* $PostgreSQL: pgsql/src/backend/access/common/heaptuple.c,v 1.103 2005/11/20 19:49:06 tgl Exp $
2020
*
2121
*-------------------------------------------------------------------------
2222
*/
@@ -623,7 +623,6 @@ heap_copytuple(HeapTuple tuple)
623623
newTuple->t_len=tuple->t_len;
624624
newTuple->t_self=tuple->t_self;
625625
newTuple->t_tableOid=tuple->t_tableOid;
626-
newTuple->t_datamcxt=CurrentMemoryContext;
627626
newTuple->t_data= (HeapTupleHeader) ((char*)newTuple+HEAPTUPLESIZE);
628627
memcpy((char*)newTuple->t_data, (char*)tuple->t_data,tuple->t_len);
629628
returnnewTuple;
@@ -647,7 +646,6 @@ heap_copytuple_with_tuple(HeapTuple src, HeapTuple dest)
647646
dest->t_len=src->t_len;
648647
dest->t_self=src->t_self;
649648
dest->t_tableOid=src->t_tableOid;
650-
dest->t_datamcxt=CurrentMemoryContext;
651649
dest->t_data= (HeapTupleHeader)palloc(src->t_len);
652650
memcpy((char*)dest->t_data, (char*)src->t_data,src->t_len);
653651
}
@@ -725,7 +723,6 @@ heap_form_tuple(TupleDesc tupleDescriptor,
725723
* HeapTupleData management structure are allocated in one chunk.
726724
*/
727725
tuple= (HeapTuple)palloc0(HEAPTUPLESIZE+len);
728-
tuple->t_datamcxt=CurrentMemoryContext;
729726
tuple->t_data=td= (HeapTupleHeader) ((char*)tuple+HEAPTUPLESIZE);
730727

731728
/*
@@ -833,7 +830,6 @@ heap_formtuple(TupleDesc tupleDescriptor,
833830
* HeapTupleData management structure are allocated in one chunk.
834831
*/
835832
tuple= (HeapTuple)palloc0(HEAPTUPLESIZE+len);
836-
tuple->t_datamcxt=CurrentMemoryContext;
837833
tuple->t_data=td= (HeapTupleHeader) ((char*)tuple+HEAPTUPLESIZE);
838834

839835
/*
@@ -1516,11 +1512,6 @@ slot_attisnull(TupleTableSlot *slot, int attnum)
15161512
void
15171513
heap_freetuple(HeapTuplehtup)
15181514
{
1519-
if (htup->t_data!=NULL)
1520-
if (htup->t_datamcxt!=NULL&& (char*) (htup->t_data)!=
1521-
((char*)htup+HEAPTUPLESIZE))
1522-
pfree(htup->t_data);
1523-
15241515
pfree(htup);
15251516
}
15261517

@@ -1559,7 +1550,6 @@ heap_addheader(int natts,/* max domain index */
15591550
len=hoff+structlen;
15601551

15611552
tuple= (HeapTuple)palloc0(HEAPTUPLESIZE+len);
1562-
tuple->t_datamcxt=CurrentMemoryContext;
15631553
tuple->t_data=td= (HeapTupleHeader) ((char*)tuple+HEAPTUPLESIZE);
15641554

15651555
tuple->t_len=len;

‎src/backend/access/heap/heapam.c‎

Lines changed: 4 additions & 18 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $PostgreSQL: pgsql/src/backend/access/heap/heapam.c,v 1.201 2005/11/2018:38:20 tgl Exp $
11+
* $PostgreSQL: pgsql/src/backend/access/heap/heapam.c,v 1.202 2005/11/2019:49:07 tgl Exp $
1212
*
1313
*
1414
* INTERFACE ROUTINES
@@ -78,7 +78,6 @@ initscan(HeapScanDesc scan, ScanKey key)
7878
*/
7979
scan->rs_nblocks=RelationGetNumberOfBlocks(scan->rs_rd);
8080

81-
scan->rs_ctup.t_datamcxt=NULL;
8281
scan->rs_ctup.t_data=NULL;
8382
scan->rs_cbuf=InvalidBuffer;
8483

@@ -129,8 +128,9 @@ heapgettup(Relation relation,
129128
/*
130129
* debugging stuff
131130
*
132-
* check validity of arguments, here and for other functions too Note: no
133-
* locking manipulations needed--this is a local function
131+
* check validity of arguments, here and for other functions too
132+
*
133+
* Note: no locking manipulations needed--this is a local function
134134
*/
135135
#ifdefHEAPDEBUGALL
136136
if (ItemPointerIsValid(tid))
@@ -164,7 +164,6 @@ heapgettup(Relation relation,
164164
if (BufferIsValid(*buffer))
165165
ReleaseBuffer(*buffer);
166166
*buffer=InvalidBuffer;
167-
tuple->t_datamcxt=NULL;
168167
tuple->t_data=NULL;
169168
return;
170169
}
@@ -182,7 +181,6 @@ heapgettup(Relation relation,
182181
if (BufferIsValid(*buffer))
183182
ReleaseBuffer(*buffer);
184183
*buffer=InvalidBuffer;
185-
tuple->t_datamcxt=NULL;
186184
tuple->t_data=NULL;
187185
return;
188186
}
@@ -197,7 +195,6 @@ heapgettup(Relation relation,
197195
lineoff=ItemPointerGetOffsetNumber(tid);
198196
lpp=PageGetItemId(dp,lineoff);
199197

200-
tuple->t_datamcxt=NULL;
201198
tuple->t_data= (HeapTupleHeader)PageGetItem((Page)dp,lpp);
202199
tuple->t_len=ItemIdGetLength(lpp);
203200
LockBuffer(*buffer,BUFFER_LOCK_UNLOCK);
@@ -293,7 +290,6 @@ heapgettup(Relation relation,
293290
{
294291
boolvalid;
295292

296-
tuple->t_datamcxt=NULL;
297293
tuple->t_data= (HeapTupleHeader)PageGetItem((Page)dp,lpp);
298294
tuple->t_len=ItemIdGetLength(lpp);
299295
ItemPointerSet(&(tuple->t_self),page,lineoff);
@@ -340,7 +336,6 @@ heapgettup(Relation relation,
340336
if (BufferIsValid(*buffer))
341337
ReleaseBuffer(*buffer);
342338
*buffer=InvalidBuffer;
343-
tuple->t_datamcxt=NULL;
344339
tuple->t_data=NULL;
345340
return;
346341
}
@@ -872,7 +867,6 @@ heap_release_fetch(Relation relation,
872867
ReleaseBuffer(buffer);
873868
*userbuf=InvalidBuffer;
874869
}
875-
tuple->t_datamcxt=NULL;
876870
tuple->t_data=NULL;
877871
return false;
878872
}
@@ -895,15 +889,13 @@ heap_release_fetch(Relation relation,
895889
ReleaseBuffer(buffer);
896890
*userbuf=InvalidBuffer;
897891
}
898-
tuple->t_datamcxt=NULL;
899892
tuple->t_data=NULL;
900893
return false;
901894
}
902895

903896
/*
904897
* fill in *tuple fields
905898
*/
906-
tuple->t_datamcxt=NULL;
907899
tuple->t_data= (HeapTupleHeader)PageGetItem((Page)dp,lp);
908900
tuple->t_len=ItemIdGetLength(lp);
909901
tuple->t_tableOid=RelationGetRelid(relation);
@@ -1027,7 +1019,6 @@ heap_get_latest_tid(Relation relation,
10271019

10281020
/* OK to access the tuple */
10291021
tp.t_self=ctid;
1030-
tp.t_datamcxt=NULL;
10311022
tp.t_data= (HeapTupleHeader)PageGetItem(dp,lp);
10321023
tp.t_len=ItemIdGetLength(lp);
10331024

@@ -1303,7 +1294,6 @@ heap_delete(Relation relation, ItemPointer tid,
13031294
dp= (PageHeader)BufferGetPage(buffer);
13041295
lp=PageGetItemId(dp,ItemPointerGetOffsetNumber(tid));
13051296

1306-
tp.t_datamcxt=NULL;
13071297
tp.t_data= (HeapTupleHeader)PageGetItem(dp,lp);
13081298
tp.t_len=ItemIdGetLength(lp);
13091299
tp.t_self=*tid;
@@ -1612,7 +1602,6 @@ heap_update(Relation relation, ItemPointer otid, HeapTuple newtup,
16121602
dp= (PageHeader)BufferGetPage(buffer);
16131603
lp=PageGetItemId(dp,ItemPointerGetOffsetNumber(otid));
16141604

1615-
oldtup.t_datamcxt=NULL;
16161605
oldtup.t_data= (HeapTupleHeader)PageGetItem(dp,lp);
16171606
oldtup.t_len=ItemIdGetLength(lp);
16181607
oldtup.t_self=*otid;
@@ -2093,7 +2082,6 @@ heap_lock_tuple(Relation relation, HeapTuple tuple, Buffer *buffer,
20932082
lp=PageGetItemId(dp,ItemPointerGetOffsetNumber(tid));
20942083
Assert(ItemIdIsUsed(lp));
20952084

2096-
tuple->t_datamcxt=NULL;
20972085
tuple->t_data= (HeapTupleHeader)PageGetItem((Page)dp,lp);
20982086
tuple->t_len=ItemIdGetLength(lp);
20992087
tuple->t_tableOid=RelationGetRelid(relation);
@@ -2476,13 +2464,11 @@ heap_restrpos(HeapScanDesc scan)
24762464

24772465
if (!ItemPointerIsValid(&scan->rs_mctid))
24782466
{
2479-
scan->rs_ctup.t_datamcxt=NULL;
24802467
scan->rs_ctup.t_data=NULL;
24812468
}
24822469
else
24832470
{
24842471
scan->rs_ctup.t_self=scan->rs_mctid;
2485-
scan->rs_ctup.t_datamcxt=NULL;
24862472
scan->rs_ctup.t_data= (HeapTupleHeader)0x1;/* for heapgettup */
24872473
heapgettup(scan->rs_rd,
24882474
0,

‎src/backend/access/heap/tuptoaster.c‎

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $PostgreSQL: pgsql/src/backend/access/heap/tuptoaster.c,v 1.54 2005/11/2018:38:20 tgl Exp $
11+
* $PostgreSQL: pgsql/src/backend/access/heap/tuptoaster.c,v 1.55 2005/11/2019:49:07 tgl Exp $
1212
*
1313
*
1414
* INTERFACE ROUTINES
@@ -774,7 +774,6 @@ toast_insert_or_update(Relation rel, HeapTuple newtup, HeapTuple oldtup)
774774
result_tuple->t_len=new_len;
775775
result_tuple->t_self=newtup->t_self;
776776
result_tuple->t_tableOid=newtup->t_tableOid;
777-
result_tuple->t_datamcxt=CurrentMemoryContext;
778777
new_data= (HeapTupleHeader) ((char*)result_tuple+HEAPTUPLESIZE);
779778
result_tuple->t_data=new_data;
780779

‎src/backend/access/index/genam.c‎

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $PostgreSQL: pgsql/src/backend/access/index/genam.c,v 1.49 2005/10/15 02:49:09 momjian Exp $
11+
* $PostgreSQL: pgsql/src/backend/access/index/genam.c,v 1.50 2005/11/20 19:49:07 tgl Exp $
1212
*
1313
* NOTES
1414
* many of the old access method routines have been turned into
@@ -98,7 +98,6 @@ RelationGetIndexScan(Relation indexRelation,
9898
ItemPointerSetInvalid(&scan->currentMarkData);
9999

100100
ItemPointerSetInvalid(&scan->xs_ctup.t_self);
101-
scan->xs_ctup.t_datamcxt=NULL;
102101
scan->xs_ctup.t_data=NULL;
103102
scan->xs_cbuf=InvalidBuffer;
104103

‎src/backend/commands/trigger.c‎

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
* Portions Copyright (c) 1994, Regents of the University of California
88
*
99
* IDENTIFICATION
10-
* $PostgreSQL: pgsql/src/backend/commands/trigger.c,v 1.195 2005/10/15 02:49:15 momjian Exp $
10+
* $PostgreSQL: pgsql/src/backend/commands/trigger.c,v 1.196 2005/11/20 19:49:07 tgl Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -1769,7 +1769,6 @@ ltrmark:;
17691769

17701770
Assert(ItemIdIsUsed(lp));
17711771

1772-
tuple.t_datamcxt=NULL;
17731772
tuple.t_data= (HeapTupleHeader)PageGetItem((Page)dp,lp);
17741773
tuple.t_len=ItemIdGetLength(lp);
17751774
tuple.t_self=*tid;

‎src/backend/commands/vacuum.c‎

Lines changed: 1 addition & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -13,7 +13,7 @@
1313
*
1414
*
1515
* IDENTIFICATION
16-
* $PostgreSQL: pgsql/src/backend/commands/vacuum.c,v 1.317 2005/10/15 02:49:16 momjian Exp $
16+
* $PostgreSQL: pgsql/src/backend/commands/vacuum.c,v 1.318 2005/11/20 19:49:07 tgl Exp $
1717
*
1818
*-------------------------------------------------------------------------
1919
*/
@@ -1338,7 +1338,6 @@ scan_heap(VRelStats *vacrelstats, Relation onerel,
13381338
continue;
13391339
}
13401340

1341-
tuple.t_datamcxt=NULL;
13421341
tuple.t_data= (HeapTupleHeader)PageGetItem(page,itemid);
13431342
tuple.t_len=ItemIdGetLength(itemid);
13441343
ItemPointerSet(&(tuple.t_self),blkno,offnum);
@@ -1758,7 +1757,6 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
17581757
if (!ItemIdIsUsed(itemid))
17591758
continue;
17601759

1761-
tuple.t_datamcxt=NULL;
17621760
tuple.t_data= (HeapTupleHeader)PageGetItem(page,itemid);
17631761
tuple_len=tuple.t_len=ItemIdGetLength(itemid);
17641762
ItemPointerSet(&(tuple.t_self),blkno,offnum);
@@ -1937,7 +1935,6 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
19371935
break;
19381936
}
19391937
/* OK, switch our attention to the next tuple in chain */
1940-
tp.t_datamcxt=NULL;
19411938
tp.t_data=nextTdata;
19421939
tp.t_self=nextTid;
19431940
tlen=tp.t_len=ItemIdGetLength(nextItemid);
@@ -2064,7 +2061,6 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
20642061
chain_move_failed= true;
20652062
break;/* out of check-all-items loop */
20662063
}
2067-
tp.t_datamcxt=NULL;
20682064
tp.t_data=PTdata;
20692065
tlen=tp.t_len=ItemIdGetLength(Pitemid);
20702066
if (freeCbuf)
@@ -2122,7 +2118,6 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
21222118

21232119
Citemid=PageGetItemId(Cpage,
21242120
ItemPointerGetOffsetNumber(&(tuple.t_self)));
2125-
tuple.t_datamcxt=NULL;
21262121
tuple.t_data= (HeapTupleHeader)PageGetItem(Cpage,Citemid);
21272122
tuple_len=tuple.t_len=ItemIdGetLength(Citemid);
21282123

@@ -2582,7 +2577,6 @@ move_chain_tuple(Relation rel,
25822577
newitemid=PageGetItemId(dst_page,newoff);
25832578
/* drop temporary copy, and point to the version on the dest page */
25842579
pfree(newtup.t_data);
2585-
newtup.t_datamcxt=NULL;
25862580
newtup.t_data= (HeapTupleHeader)PageGetItem(dst_page,newitemid);
25872581

25882582
ItemPointerSet(&(newtup.t_self),dst_vacpage->blkno,newoff);
@@ -2692,7 +2686,6 @@ move_plain_tuple(Relation rel,
26922686
dst_vacpage->offsets_used,dst_vacpage->offsets_free);
26932687
newitemid=PageGetItemId(dst_page,newoff);
26942688
pfree(newtup.t_data);
2695-
newtup.t_datamcxt=NULL;
26962689
newtup.t_data= (HeapTupleHeader)PageGetItem(dst_page,newitemid);
26972690
ItemPointerSet(&(newtup.t_data->t_ctid),dst_vacpage->blkno,newoff);
26982691
newtup.t_self=newtup.t_data->t_ctid;

‎src/backend/commands/vacuumlazy.c‎

Lines changed: 1 addition & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -31,7 +31,7 @@
3131
*
3232
*
3333
* IDENTIFICATION
34-
* $PostgreSQL: pgsql/src/backend/commands/vacuumlazy.c,v 1.61 2005/10/15 02:49:16 momjian Exp $
34+
* $PostgreSQL: pgsql/src/backend/commands/vacuumlazy.c,v 1.62 2005/11/20 19:49:07 tgl Exp $
3535
*
3636
*-------------------------------------------------------------------------
3737
*/
@@ -349,7 +349,6 @@ lazy_scan_heap(Relation onerel, LVRelStats *vacrelstats,
349349
continue;
350350
}
351351

352-
tuple.t_datamcxt=NULL;
353352
tuple.t_data= (HeapTupleHeader)PageGetItem(page,itemid);
354353
tuple.t_len=ItemIdGetLength(itemid);
355354
ItemPointerSet(&(tuple.t_self),blkno,offnum);
@@ -885,7 +884,6 @@ count_nondeletable_pages(Relation onerel, LVRelStats *vacrelstats)
885884
if (!ItemIdIsUsed(itemid))
886885
continue;
887886

888-
tuple.t_datamcxt=NULL;
889887
tuple.t_data= (HeapTupleHeader)PageGetItem(page,itemid);
890888
tuple.t_len=ItemIdGetLength(itemid);
891889
ItemPointerSet(&(tuple.t_self),blkno,offnum);

‎src/backend/executor/nodeHash.c‎

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $PostgreSQL: pgsql/src/backend/executor/nodeHash.c,v 1.96 2005/10/15 02:49:17 momjian Exp $
11+
* $PostgreSQL: pgsql/src/backend/executor/nodeHash.c,v 1.97 2005/11/20 19:49:07 tgl Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -621,7 +621,6 @@ ExecHashTableInsert(HashJoinTable hashtable,
621621
memcpy((char*)&hashTuple->htup,
622622
(char*)tuple,
623623
sizeof(hashTuple->htup));
624-
hashTuple->htup.t_datamcxt=hashtable->batchCxt;
625624
hashTuple->htup.t_data= (HeapTupleHeader)
626625
(((char*)hashTuple)+MAXALIGN(sizeof(HashJoinTupleData)));
627626
memcpy((char*)hashTuple->htup.t_data,

‎src/backend/executor/nodeHashjoin.c‎

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $PostgreSQL: pgsql/src/backend/executor/nodeHashjoin.c,v 1.75 2005/10/18 01:06:24 tgl Exp $
11+
* $PostgreSQL: pgsql/src/backend/executor/nodeHashjoin.c,v 1.76 2005/11/20 19:49:07 tgl Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -789,7 +789,6 @@ ExecHashJoinGetSavedTuple(HashJoinState *hjstate,
789789
errmsg("could not read from hash-join temporary file: %m")));
790790
heapTuple=palloc(HEAPTUPLESIZE+htup.t_len);
791791
memcpy((char*)heapTuple, (char*)&htup,sizeof(HeapTupleData));
792-
heapTuple->t_datamcxt=CurrentMemoryContext;
793792
heapTuple->t_data= (HeapTupleHeader)
794793
((char*)heapTuple+HEAPTUPLESIZE);
795794
nread=BufFileRead(file, (void*)heapTuple->t_data,htup.t_len);

‎src/backend/utils/cache/relcache.c‎

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $PostgreSQL: pgsql/src/backend/utils/cache/relcache.c,v 1.230 2005/10/15 02:49:31 momjian Exp $
11+
* $PostgreSQL: pgsql/src/backend/utils/cache/relcache.c,v 1.231 2005/11/20 19:49:07 tgl Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -2998,7 +2998,6 @@ load_relcache_init_file(void)
29982998
gotoread_failed;
29992999

30003000
/* Fix up internal pointers in the tuple -- see heap_copytuple */
3001-
rel->rd_indextuple->t_datamcxt=CurrentMemoryContext;
30023001
rel->rd_indextuple->t_data= (HeapTupleHeader) ((char*)rel->rd_indextuple+HEAPTUPLESIZE);
30033002
rel->rd_index= (Form_pg_index)GETSTRUCT(rel->rd_indextuple);
30043003

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