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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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6
src/include/utils/rel.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/utils/rel.h,v 1.82 2005/01/10 20:02:24 tgl Exp $
* $PostgreSQL: pgsql/src/include/utils/rel.h,v 1.83 2005/03/29 00:17:18 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -58,7 +58,8 @@ typedef struct Trigger
bool tgdeferrable;
bool tginitdeferred;
int16 tgnargs;
int16 tgattr[FUNC_MAX_ARGS];
int16 tgnattr;
int16 *tgattr;
char **tgargs;
} Trigger;
@@ -137,6 +138,7 @@ typedef struct RelationData
Form_pg_index rd_index; /* pg_index tuple describing this index */
struct HeapTupleData *rd_indextuple; /* all of pg_index tuple */
/* "struct HeapTupleData *" avoids need to include htup.h here */
oidvector *rd_indclass; /* extracted pointer to rd_index field */
Form_pg_am rd_am; /* pg_am tuple for index's AM */
/*