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Commit88dc31e

Browse files
committed
First cut at recycling space in btree indexes. Still some rough edges
to fix, but it seems to basically work...
1 parent2785491 commit88dc31e

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8 files changed

+745
-32
lines changed

8 files changed

+745
-32
lines changed

‎src/backend/access/common/indextuple.c

Lines changed: 8 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -9,7 +9,7 @@
99
*
1010
*
1111
* IDENTIFICATION
12-
* $Header: /cvsroot/pgsql/src/backend/access/common/indextuple.c,v 1.63 2002/11/13 00:39:46 momjian Exp $
12+
* $Header: /cvsroot/pgsql/src/backend/access/common/indextuple.c,v 1.64 2003/02/23 06:17:12 tgl Exp $
1313
*
1414
*-------------------------------------------------------------------------
1515
*/
@@ -394,17 +394,16 @@ nocache_index_getattr(IndexTuple tup,
394394
}
395395

396396
/*
397-
* Copies source into target. If *target == NULL, we palloc space; otherwise
398-
* we assume we have space that is already palloc'ed.
397+
* Create a palloc'd copy of an index tuple.
399398
*/
400-
void
401-
CopyIndexTuple(IndexTuplesource,IndexTuple*target)
399+
IndexTuple
400+
CopyIndexTuple(IndexTuplesource)
402401
{
402+
IndexTupleresult;
403403
Sizesize;
404404

405405
size=IndexTupleSize(source);
406-
if (*target==NULL)
407-
*target= (IndexTuple)palloc(size);
408-
409-
memmove((char*)*target, (char*)source,size);
406+
result= (IndexTuple)palloc(size);
407+
memcpy(result,source,size);
408+
returnresult;
410409
}

‎src/backend/access/nbtree/nbtinsert.c

Lines changed: 2 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.98 2003/02/22 00:45:03 tgl Exp $
11+
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.99 2003/02/23 06:17:13 tgl Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -58,7 +58,6 @@ static OffsetNumber _bt_findsplitloc(Relation rel, Page page,
5858
staticvoid_bt_checksplitloc(FindSplitData*state,OffsetNumberfirstright,
5959
intleftfree,intrightfree,
6060
boolnewitemonleft,Sizefirstrightitemsz);
61-
staticBuffer_bt_getstackbuf(Relationrel,BTStackstack,intaccess);
6261
staticvoid_bt_pgaddtup(Relationrel,Pagepage,
6362
Sizeitemsize,BTItembtitem,
6463
OffsetNumberitup_off,constchar*where);
@@ -666,7 +665,6 @@ _bt_split(Relation rel, Buffer buf, OffsetNumber firstright,
666665
rightoff;
667666
OffsetNumbermaxoff;
668667
OffsetNumberi;
669-
BTItemlhikey;
670668

671669
rbuf=_bt_getbuf(rel,P_NEW,BT_WRITE);
672670
origpage=BufferGetPage(buf);
@@ -730,7 +728,6 @@ _bt_split(Relation rel, Buffer buf, OffsetNumber firstright,
730728
itemsz=ItemIdGetLength(itemid);
731729
item= (BTItem)PageGetItem(origpage,itemid);
732730
}
733-
lhikey=item;
734731
if (PageAddItem(leftpage, (Item)item,itemsz,leftoff,
735732
LP_USED)==InvalidOffsetNumber)
736733
elog(PANIC,"btree: failed to add hikey to the left sibling");
@@ -1262,7 +1259,7 @@ _bt_insert_parent(Relation rel,
12621259
*
12631260
*Returns InvalidBuffer if item not found (should not happen).
12641261
*/
1265-
staticBuffer
1262+
Buffer
12661263
_bt_getstackbuf(Relationrel,BTStackstack,intaccess)
12671264
{
12681265
BlockNumberblkno;

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