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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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4
src/include/utils/lsyscache.h
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@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: lsyscache.h,v 1.26 2000/10/05 19:48:34 momjian Exp $
* $Id: lsyscache.h,v 1.27 2000/11/16 22:30:49 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -29,7 +29,6 @@ extern bool op_mergejoinable(Oid opno, Oid ltype, Oid rtype,
Oid *leftOp, Oid *rightOp);
extern Oid op_hashjoinable(Oid opno, Oid ltype, Oid rtype);
extern bool op_iscachable(Oid opno);
extern HeapTuple get_operator_tuple(Oid opno);
extern Oid get_commutator(Oid opno);
extern Oid get_negator(Oid opno);
extern RegProcedure get_oprrest(Oid opno);
@ -39,6 +38,7 @@ extern bool func_iscachable(Oid funcid);
extern char *get_rel_name(Oid relid);
extern int16 get_typlen(Oid typid);
extern bool get_typbyval(Oid typid);
extern void get_typlenbyval(Oid typid, int16 *typlen, bool *typbyval);
extern Datum get_typdefault(Oid typid);
#endif /* LSYSCACHE_H */