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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2006-06-27 02:51:40 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2006-06-27 02:51:40 +0000 |
| commit | 3f50ba27cf417eb57fd310c2a88f76a6ea6b966e (patch) | |
| tree | e9dec4aaac793ed8efab65488e62532057f91704 /src/include/access/heapam.h | |
| parent | fe491fb9afd07f3cc9b8aabb17f43049b79258a9 (diff) | |
| download | postgresql-3f50ba27cf417eb57fd310c2a88f76a6ea6b966e.tar.gz postgresql-3f50ba27cf417eb57fd310c2a88f76a6ea6b966e.zip | |
Create infrastructure for 'MinimalTuple' representation of in-memory
tuples with less header overhead than a regular HeapTuple, per my
recent proposal. Teach TupleTableSlot code how to deal with these.
As proof of concept, change tuplestore.c to store MinimalTuples instead
of HeapTuples. Future patches will expand the concept to other places
where it is useful.
Diffstat (limited to 'src/include/access/heapam.h')
| -rw-r--r-- | src/include/access/heapam.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/include/access/heapam.h b/src/include/access/heapam.h index e016a527403..7301be4ae34 100644 --- a/src/include/access/heapam.h +++ b/src/include/access/heapam.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/access/heapam.h,v 1.111 2006/05/10 23:18:39 tgl Exp $ + * $PostgreSQL: pgsql/src/include/access/heapam.h,v 1.112 2006/06/27 02:51:39 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -217,7 +217,13 @@ extern void heap_deform_tuple(HeapTuple tuple, TupleDesc tupleDesc, Datum *values, bool *isnull); extern void heap_deformtuple(HeapTuple tuple, TupleDesc tupleDesc, Datum *values, char *nulls); -extern void heap_freetuple(HeapTuple tuple); +extern void heap_freetuple(HeapTuple htup); +extern MinimalTuple heap_form_minimal_tuple(TupleDesc tupleDescriptor, + Datum *values, bool *isnull); +extern void heap_free_minimal_tuple(MinimalTuple mtup); +extern MinimalTuple heap_copy_minimal_tuple(MinimalTuple mtup); +extern HeapTuple heap_tuple_from_minimal_tuple(MinimalTuple mtup); +extern MinimalTuple minimal_tuple_from_heap_tuple(HeapTuple htup); extern HeapTuple heap_addheader(int natts, bool withoid, Size structlen, void *structure); |