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📄 acl.h(13.83 KB)
📄 aclchk_internal.h(1.42 KB)
📄 array.h(18.84 KB)
📄 arrayaccess.h(2.97 KB)
📄 ascii.h(579 B)
📄 attoptcache.h(725 B)
📄 builtins.h(56.08 KB)
📄 bytea.h(1.63 KB)
📄 cash.h(2.07 KB)
📄 catcache.h(7.4 KB)
📄 combocid.h(870 B)
📄 date.h(7.77 KB)
📄 datetime.h(10.59 KB)
📄 datum.h(1.88 KB)
📄 dynahash.h(498 B)
📄 dynamic_loader.h(648 B)
📄 elog.h(14.74 KB)
📄 errcodes.h(20.1 KB)
📄 evtcache.h(934 B)
📄 expandeddatum.h(6.89 KB)
📄 fmgroids.h(72.24 KB)
📄 fmgrtab.h(1.15 KB)
📄 formatting.h(1.41 KB)
📄 geo_decls.h(16.22 KB)
📄 guc.h(15.6 KB)
📄 guc_tables.h(7.22 KB)
📄 help_config.h(457 B)
📄 hsearch.h(5.97 KB)
📄 index_selfuncs.h(2.16 KB)
📄 inet.h(4.6 KB)
📄 int8.h(4.12 KB)
📄 inval.h(1.71 KB)
📄 json.h(3.26 KB)
📄 jsonapi.h(4.19 KB)
📄 jsonb.h(16.13 KB)
📄 logtape.h(1.5 KB)
📄 lsyscache.h(6.91 KB)
📄 memdebug.h(1.25 KB)
📄 memutils.h(6.16 KB)
📄 nabstime.h(5.79 KB)
📄 numeric.h(1.92 KB)
📄 palloc.h(5.04 KB)
📄 pg_crc.h(3.42 KB)
📄 pg_locale.h(2.63 KB)
📄 pg_lsn.h(1.29 KB)
📄 pg_rusage.h(847 B)
📄 plancache.h(8.36 KB)
📄 portal.h(9.64 KB)
📄 probes.h(6.54 KB)
📄 ps_status.h(668 B)
📄 rangetypes.h(8.31 KB)
📄 rel.h(18.18 KB)
📄 relcache.h(3.79 KB)
📄 relfilenodemap.h(561 B)
📄 relmapper.h(1.8 KB)
📄 reltrigger.h(1.95 KB)
📄 resowner.h(2.52 KB)
📄 resowner_private.h(3.42 KB)
📄 rls.h(1.73 KB)
📄 ruleutils.h(1.2 KB)
📄 sampling.h(1.96 KB)
📄 selfuncs.h(9.39 KB)
📄 snapmgr.h(4.13 KB)
📄 snapshot.h(4.2 KB)
📄 sortsupport.h(10.81 KB)
📄 spccache.h(604 B)
📄 syscache.h(5.91 KB)
📄 timeout.h(2.48 KB)
📄 timestamp.h(10.34 KB)
📄 tqual.h(4.11 KB)
📄 tuplesort.h(4.86 KB)
📄 tuplestore.h(3.23 KB)
📄 typcache.h(5.71 KB)
📄 tzparser.h(1.13 KB)
📄 uuid.h(861 B)
📄 varbit.h(4.31 KB)
📄 xml.h(3.89 KB)

Editing: 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) 1996-2016, 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"

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

/* 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 */

/*
	 * Domain constraint data if it's a domain type.  NULL if not domain, or
	 * if domain has no constraints, or if information hasn't been requested.
	 */
	DomainConstraintCache *domainData;

/* 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;

/* We also maintain a list of all known domain-type cache entries */
	struct TypeCacheEntry *nextDomain;
} 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
#define TYPECACHE_DOMAIN_INFO		0x1000

/*
 * Callers wishing to maintain a long-lived reference to a domain's constraint
 * set must store it in one of these.  Use InitDomainConstraintRef() and
 * UpdateDomainConstraintRef() to manage it.  Note: DomainConstraintState is
 * considered an executable expression type, so it's defined in execnodes.h.
 */
typedef struct DomainConstraintRef
{
	List	   *constraints;	/* list of DomainConstraintState nodes */
	MemoryContext refctx;		/* context holding DomainConstraintRef */
	TypeCacheEntry *tcache;		/* typcache entry for domain type */

/* Management data --- treat these fields as private to typcache.c */
	DomainConstraintCache *dcc; /* current constraints, or NULL if none */
	MemoryContextCallback callback;		/* used to release refcount when done */
} DomainConstraintRef;

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

extern void InitDomainConstraintRef(Oid type_id, DomainConstraintRef *ref,
						MemoryContext refctx);

extern void UpdateDomainConstraintRef(DomainConstraintRef *ref);

extern bool DomainHasConstraints(Oid type_id);

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 */

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Editing: typcache.h

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