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Convert oidvector and int2vector into variable-length arrays. This

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change saves a great deal of space in pg_proc and its primary index,
and it eliminates the former requirement that INDEX_MAX_KEYS and
FUNC_MAX_ARGS have the same value.  INDEX_MAX_KEYS is still embedded
in the on-disk representation (because it affects index tuple header
size), but FUNC_MAX_ARGS is not.  I believe it would now be possible
to increase FUNC_MAX_ARGS at little cost, but haven't experimented yet.
There are still a lot of vestigial references to FUNC_MAX_ARGS, which
I will clean up in a separate pass.  However, getting rid of it
altogether would require changing the FunctionCallInfoData struct,
and I'm not sure I want to buy into that.
This commit is contained in:
Tom Lane
2005-03-29 00:17:27 +00:00
parent 119191609c
commit 70c9763d48
61 changed files with 819 additions and 581 deletions
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16
src/backend/access/nbtree/nbtcompare.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtcompare.c,v 1.50 2004/12/31 21:59:22 pgsql Exp $
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtcompare.c,v 1.51 2005/03/29 00:16:52 tgl Exp $
*
* NOTES
*
@@ -198,15 +198,19 @@ btoidcmp(PG_FUNCTION_ARGS)
Datum
btoidvectorcmp(PG_FUNCTION_ARGS)
{
Oid *a = (Oid *) PG_GETARG_POINTER(0);
Oid *b = (Oid *) PG_GETARG_POINTER(1);
oidvector *a = (oidvector *) PG_GETARG_POINTER(0);
oidvector *b = (oidvector *) PG_GETARG_POINTER(1);
int i;
for (i = 0; i < INDEX_MAX_KEYS; i++)
/* We arbitrarily choose to sort first by vector length */
if (a->dim1 != b->dim1)
PG_RETURN_INT32(a->dim1 - b->dim1);
for (i = 0; i < a->dim1; i++)
{
if (a[i] != b[i])
if (a->values[i] != b->values[i])
{
if (a[i] > b[i])
if (a->values[i] > b->values[i])
PG_RETURN_INT32(1);
else
PG_RETURN_INT32(-1);

4
src/backend/access/nbtree/nbtsearch.c
View File

@@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtsearch.c,v 1.90 2004/12/31 21:59:22 pgsql Exp $
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtsearch.c,v 1.91 2005/03/29 00:16:52 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -684,7 +684,7 @@ _bt_first(IndexScanDesc scan, ScanDirection dir)
{
RegProcedure cmp_proc;
cmp_proc = get_opclass_proc(rel->rd_index->indclass[i],
cmp_proc = get_opclass_proc(rel->rd_indclass->values[i],
cur->sk_subtype,
BTORDER_PROC);
ScanKeyEntryInitialize(scankeys + i,