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Change SearchSysCache coding conventions so that a reference count is

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maintained for each cache entry.  A cache entry will not be freed until
the matching ReleaseSysCache call has been executed.  This eliminates
worries about cache entries getting dropped while still in use.  See
my posting to pg-hackers of even date for more info.
This commit is contained in:
Tom Lane
2000-11-16 22:30:52 +00:00
parent cff23842a4
commit a933ee38bb
95 changed files with 2672 additions and 2314 deletions
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25
src/backend/nodes/makefuncs.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/makefuncs.c,v 1.22 2000/08/08 15:41:24 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/makefuncs.c,v 1.23 2000/11/16 22:30:23 tgl Exp $
*
* NOTES
* Creator functions in POSTGRES 4.2 are generated automatically. Most of
@ -20,7 +20,10 @@
* Andrew Yu Oct 20, 1994 file creation
*/
#include "postgres.h"
#include "nodes/makefuncs.h"
#include "utils/lsyscache.h"
/*
* makeOper -
@ -143,6 +146,26 @@ makeConst(Oid consttype,
return cnst;
}
/*
* makeNullConst -
* creates a Const node representing a NULL of the specified type
*/
Const *
makeNullConst(Oid consttype)
{
int16 typLen;
bool typByVal;
get_typlenbyval(consttype, &typLen, &typByVal);
return makeConst(consttype,
(int) typLen,
(Datum) 0,
true,
typByVal,
false,
false);
}
/*
* makeAttr -
* creates an Attr node

7
src/backend/nodes/outfuncs.c
View File

@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.133 2000/11/16 05:51:00 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.134 2000/11/16 22:30:23 tgl Exp $
*
* NOTES
* Every (plan) node in POSTGRES has an associated "out" routine which
@ -1236,8 +1236,8 @@ _outJoinInfo(StringInfo str, JoinInfo *node)
static void
_outDatum(StringInfo str, Datum value, Oid type)
{
int16 typeLength;
bool byValue;
int typeLength;
Size length;
char *s;
int i;
@ -1246,8 +1246,7 @@ _outDatum(StringInfo str, Datum value, Oid type)
* find some information about the type and the "real" length of the
* datum.
*/
byValue = get_typbyval(type);
typeLength = get_typlen(type);
get_typlenbyval(type, &typeLength, &byValue);
length = datumGetSize(value, byValue, typeLength);
if (byValue)