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Name	Size	Permission
acl.h	12.79 KB	-rw-r--r--
array.h	10.97 KB	-rw-r--r--
ascii.h	579 B	-rw-r--r--
attoptcache.h	725 B	-rw-r--r--
builtins.h	47.77 KB	-rw-r--r--
bytea.h	1.58 KB	-rw-r--r--
cash.h	2.07 KB	-rw-r--r--
catcache.h	7.51 KB	-rw-r--r--
combocid.h	698 B	-rw-r--r--
date.h	7.73 KB	-rw-r--r--
datetime.h	9.92 KB	-rw-r--r--
datum.h	1.48 KB	-rw-r--r--
dynahash.h	498 B	-rw-r--r--
dynamic_loader.h	648 B	-rw-r--r--
elog.h	12.56 KB	-rw-r--r--
errcodes.h	19.61 KB	-rw-r--r--
fmgroids.h	61.09 KB	-rw-r--r--
fmgrtab.h	1.15 KB	-rw-r--r--
formatting.h	1.41 KB	-rw-r--r--
geo_decls.h	15.86 KB	-rw-r--r--
guc.h	13.19 KB	-rw-r--r--
guc_tables.h	7.15 KB	-rw-r--r--
help_config.h	432 B	-rw-r--r--
hsearch.h	5.51 KB	-rw-r--r--
inet.h	2.66 KB	-rw-r--r--
int8.h	4.03 KB	-rw-r--r--
inval.h	1.81 KB	-rw-r--r--
json.h	916 B	-rw-r--r--
logtape.h	1.5 KB	-rw-r--r--
lsyscache.h	6.51 KB	-rw-r--r--
memutils.h	5.2 KB	-rw-r--r--
nabstime.h	5.79 KB	-rw-r--r--
numeric.h	1.88 KB	-rw-r--r--
palloc.h	3.92 KB	-rw-r--r--
pg_crc.h	4.36 KB	-rw-r--r--
pg_crc_tables.h	19.73 KB	-rw-r--r--
pg_locale.h	2.59 KB	-rw-r--r--
pg_lzcompress.h	2.97 KB	-rw-r--r--
pg_rusage.h	847 B	-rw-r--r--
plancache.h	8.02 KB	-rw-r--r--
portal.h	9.22 KB	-rw-r--r--
probes.h	37.93 KB	-rw-r--r--
ps_status.h	668 B	-rw-r--r--
rangetypes.h	7.4 KB	-rw-r--r--
rbtree.h	2.26 KB	-rw-r--r--
rel.h	12.27 KB	-rw-r--r--
relcache.h	3.17 KB	-rw-r--r--
relmapper.h	1.68 KB	-rw-r--r--
reltrigger.h	1.95 KB	-rw-r--r--
resowner.h	5.07 KB	-rw-r--r--
selfuncs.h	7.5 KB	-rw-r--r--
snapmgr.h	1.59 KB	-rw-r--r--
snapshot.h	2.59 KB	-rw-r--r--
sortsupport.h	5.3 KB	-rw-r--r--
spccache.h	556 B	-rw-r--r--
syscache.h	5.51 KB	-rw-r--r--
timestamp.h	9.5 KB	-rw-r--r--
tqual.h	3.5 KB	-rw-r--r--
tuplesort.h	4.62 KB	-rw-r--r--
tuplestore.h	3.14 KB	-rw-r--r--
typcache.h	4.26 KB	-rw-r--r--
tzparser.h	1.13 KB	-rw-r--r--
uuid.h	861 B	-rw-r--r--
varbit.h	4.27 KB	-rw-r--r--
xml.h	3.89 KB	-rw-r--r--

Code Editor : typcache.h

/*-------------------------------------------------------------------------
 *
 * typcache.h
 *	  Type cache definitions.
 *
 * The type cache exists to speed lookup of certain information about data
 * types that is not directly available from a type's pg_type row.
 *
 * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/utils/typcache.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef TYPCACHE_H
#define TYPCACHE_H

#include "access/tupdesc.h"
#include "fmgr.h"

/* TypeCacheEnumData is an opaque struct known only within typcache.c */
struct TypeCacheEnumData;

typedef struct TypeCacheEntry
{
	/* typeId is the hash lookup key and MUST BE FIRST */
	Oid			type_id;		/* OID of the data type */

/* some subsidiary information copied from the pg_type row */
	int16		typlen;
	bool		typbyval;
	char		typalign;
	char		typstorage;
	char		typtype;
	Oid			typrelid;

/*
	 * Information obtained from opfamily entries
	 *
	 * These will be InvalidOid if no match could be found, or if the
	 * information hasn't yet been requested.  Also note that for array and
	 * composite types, typcache.c checks that the contained types are
	 * comparable or hashable before allowing eq_opr etc to become set.
	 */
	Oid			btree_opf;		/* the default btree opclass' family */
	Oid			btree_opintype; /* the default btree opclass' opcintype */
	Oid			hash_opf;		/* the default hash opclass' family */
	Oid			hash_opintype;	/* the default hash opclass' opcintype */
	Oid			eq_opr;			/* the equality operator */
	Oid			lt_opr;			/* the less-than operator */
	Oid			gt_opr;			/* the greater-than operator */
	Oid			cmp_proc;		/* the btree comparison function */
	Oid			hash_proc;		/* the hash calculation function */

/*
	 * Pre-set-up fmgr call info for the equality operator, the btree
	 * comparison function, and the hash calculation function.  These are kept
	 * in the type cache to avoid problems with memory leaks in repeated calls
	 * to functions such as array_eq, array_cmp, hash_array.  There is not
	 * currently a need to maintain call info for the lt_opr or gt_opr.
	 */
	FmgrInfo	eq_opr_finfo;
	FmgrInfo	cmp_proc_finfo;
	FmgrInfo	hash_proc_finfo;

/*
	 * Tuple descriptor if it's a composite type (row type).  NULL if not
	 * composite or information hasn't yet been requested.  (NOTE: this is a
	 * reference-counted tupledesc.)
	 */
	TupleDesc	tupDesc;

/*
	 * Fields computed when TYPECACHE_RANGE_INFO is requested.  Zeroes if not
	 * a range type or information hasn't yet been requested.  Note that
	 * rng_cmp_proc_finfo could be different from the element type's default
	 * btree comparison function.
	 */
	struct TypeCacheEntry *rngelemtype; /* range's element type */
	Oid			rng_collation;	/* collation for comparisons, if any */
	FmgrInfo	rng_cmp_proc_finfo;		/* comparison function */
	FmgrInfo	rng_canonical_finfo;	/* canonicalization function, if any */
	FmgrInfo	rng_subdiff_finfo;		/* difference function, if any */

/* Private data, for internal use of typcache.c only */
	int			flags;			/* flags about what we've computed */

/*
	 * Private information about an enum type.  NULL if not enum or
	 * information hasn't been requested.
	 */
	struct TypeCacheEnumData *enumData;
} TypeCacheEntry;

/* Bit flags to indicate which fields a given caller needs to have set */
#define TYPECACHE_EQ_OPR			0x0001
#define TYPECACHE_LT_OPR			0x0002
#define TYPECACHE_GT_OPR			0x0004
#define TYPECACHE_CMP_PROC			0x0008
#define TYPECACHE_HASH_PROC			0x0010
#define TYPECACHE_EQ_OPR_FINFO		0x0020
#define TYPECACHE_CMP_PROC_FINFO	0x0040
#define TYPECACHE_HASH_PROC_FINFO	0x0080
#define TYPECACHE_TUPDESC			0x0100
#define TYPECACHE_BTREE_OPFAMILY	0x0200
#define TYPECACHE_HASH_OPFAMILY		0x0400
#define TYPECACHE_RANGE_INFO		0x0800

extern TypeCacheEntry *lookup_type_cache(Oid type_id, int flags);

extern TupleDesc lookup_rowtype_tupdesc(Oid type_id, int32 typmod);

extern TupleDesc lookup_rowtype_tupdesc_noerror(Oid type_id, int32 typmod,
							   bool noError);

extern TupleDesc lookup_rowtype_tupdesc_copy(Oid type_id, int32 typmod);

extern void assign_record_type_typmod(TupleDesc tupDesc);

extern int	compare_values_of_enum(TypeCacheEntry *tcache, Oid arg1, Oid arg2);

#endif   /* TYPCACHE_H */

${this.title}

Code Editor : typcache.h