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Adjust creation/destruction of TupleDesc data structure to reduce the

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number of palloc calls.  This has a salutory impact on plpgsql operations
with record variables (which create and destroy tupdescs constantly)
and probably helps a bit in some other cases too.
This commit is contained in:
Tom Lane
2005-03-07 04:42:17 +00:00
parent e3d7de6b99
commit a52b4fb131
4 changed files with 82 additions and 104 deletions
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9
src/backend/catalog/index.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/catalog/index.c,v 1.245 2005/03/04 20:21:05 tgl Exp $
* $PostgreSQL: pgsql/src/backend/catalog/index.c,v 1.246 2005/03/07 04:42:16 tgl Exp $
*
*
* INTERFACE ROUTINES
@@ -97,14 +97,11 @@ ConstructTupleDescriptor(Relation heapRelation,
for (i = 0; i < numatts; i++)
{
AttrNumber atnum = indexInfo->ii_KeyAttrNumbers[i];
Form_pg_attribute to;
Form_pg_attribute to = indexTupDesc->attrs[i];
HeapTuple tuple;
Form_pg_type typeTup;
Oid keyType;
indexTupDesc->attrs[i] = to =
(Form_pg_attribute) palloc0(ATTRIBUTE_TUPLE_SIZE);
if (atnum != 0)
{
/* Simple index column */
@@ -152,6 +149,8 @@ ConstructTupleDescriptor(Relation heapRelation,
/* Expressional index */
Node *indexkey;
MemSet(to, 0, ATTRIBUTE_TUPLE_SIZE);
if (indexpr_item == NULL) /* shouldn't happen */
elog(ERROR, "too few entries in indexprs list");
indexkey = (Node *) lfirst(indexpr_item);