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Replace TupleTableSlot convention for whole-row variables and function

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results with tuples as ordinary varlena Datums.  This commit does not
in itself do much for us, except eliminate the horrid memory leak
associated with evaluation of whole-row variables.  However, it lays the
groundwork for allowing composite types as table columns, and perhaps
some other useful features as well.  Per my proposal of a few days ago.
This commit is contained in:
Tom Lane
2004-04-01 21:28:47 +00:00
parent 8590a62b75
commit 375369acd1
60 changed files with 1779 additions and 1733 deletions
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10
contrib/pgstattuple/pgstattuple.c
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@ -1,5 +1,5 @@
/*
* $PostgreSQL: pgsql/contrib/pgstattuple/pgstattuple.c,v 1.13 2003/11/29 19:51:35 pgsql Exp $
* $PostgreSQL: pgsql/contrib/pgstattuple/pgstattuple.c,v 1.14 2004/04/01 21:28:43 tgl Exp $
*
* Copyright (c) 2001,2002 Tatsuo Ishii
*
@ -111,7 +111,6 @@ pgstattuple_real(Relation rel)
uint64 free_space = 0; /* free/reusable space in bytes */
double free_percent; /* free/reusable space in % */
TupleDesc tupdesc;
TupleTableSlot *slot;
AttInMetadata *attinmeta;
char **values;
int i;
@ -122,9 +121,6 @@ pgstattuple_real(Relation rel)
*/
tupdesc = RelationNameGetTupleDesc(DUMMY_TUPLE);
/* allocate a slot for a tuple with this tupdesc */
slot = TupleDescGetSlot(tupdesc);
/*
* Generate attribute metadata needed later to produce tuples from raw
* C strings
@ -192,7 +188,7 @@ pgstattuple_real(Relation rel)
}
/*
* Prepare a values array for storage in our slot. This should be an
* Prepare a values array for constructing the tuple. This should be an
* array of C strings which will be processed later by the appropriate
* "in" functions.
*/
@ -214,7 +210,7 @@ pgstattuple_real(Relation rel)
tuple = BuildTupleFromCStrings(attinmeta, values);
/* make the tuple into a datum */
result = TupleGetDatum(slot, tuple);
result = HeapTupleGetDatum(tuple);
/* Clean up */
for (i = 0; i < NCOLUMNS; i++)