PostgreSQL Source Code git master
typcache.h File Reference
#include "access/tupdesc.h"
#include "fmgr.h"
#include "storage/dsm.h"
#include "utils/dsa.h"
Include dependency graph for typcache.h:
This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Data Structures

struct  TypeCacheEntry
 
struct  DomainConstraintRef
 

Macros

#define TYPECACHE_EQ_OPR   0x00001
 
#define TYPECACHE_LT_OPR   0x00002
 
#define TYPECACHE_GT_OPR   0x00004
 
#define TYPECACHE_CMP_PROC   0x00008
 
#define TYPECACHE_HASH_PROC   0x00010
 
#define TYPECACHE_EQ_OPR_FINFO   0x00020
 
#define TYPECACHE_CMP_PROC_FINFO   0x00040
 
#define TYPECACHE_HASH_PROC_FINFO   0x00080
 
#define TYPECACHE_TUPDESC   0x00100
 
#define TYPECACHE_BTREE_OPFAMILY   0x00200
 
#define TYPECACHE_HASH_OPFAMILY   0x00400
 
#define TYPECACHE_RANGE_INFO   0x00800
 
#define TYPECACHE_DOMAIN_BASE_INFO   0x01000
 
#define TYPECACHE_DOMAIN_CONSTR_INFO   0x02000
 
#define TYPECACHE_HASH_EXTENDED_PROC   0x04000
 
#define TYPECACHE_HASH_EXTENDED_PROC_FINFO   0x08000
 
#define TYPECACHE_MULTIRANGE_INFO   0x10000
 
#define INVALID_TUPLEDESC_IDENTIFIER   ((uint64) 1)
 

Typedefs

typedef struct DomainConstraintCache DomainConstraintCache
 
typedef struct TypeCacheEntry TypeCacheEntry
 
typedef struct DomainConstraintRef DomainConstraintRef
 
typedef struct SharedRecordTypmodRegistry SharedRecordTypmodRegistry
 

Functions

TypeCacheEntrylookup_type_cache (Oid type_id, int flags)
 
void InitDomainConstraintRef (Oid type_id, DomainConstraintRef *ref, MemoryContext refctx, bool need_exprstate)
 
void UpdateDomainConstraintRef (DomainConstraintRef *ref)
 
bool DomainHasConstraints (Oid type_id)
 
TupleDesc lookup_rowtype_tupdesc (Oid type_id, int32 typmod)
 
TupleDesc lookup_rowtype_tupdesc_noerror (Oid type_id, int32 typmod, bool noError)
 
TupleDesc lookup_rowtype_tupdesc_copy (Oid type_id, int32 typmod)
 
TupleDesc lookup_rowtype_tupdesc_domain (Oid type_id, int32 typmod, bool noError)
 
void assign_record_type_typmod (TupleDesc tupDesc)
 
uint64 assign_record_type_identifier (Oid type_id, int32 typmod)
 
int compare_values_of_enum (TypeCacheEntry *tcache, Oid arg1, Oid arg2)
 
size_t SharedRecordTypmodRegistryEstimate (void)
 
void SharedRecordTypmodRegistryInit (SharedRecordTypmodRegistry *, dsm_segment *segment, dsa_area *area)
 
void SharedRecordTypmodRegistryAttach (SharedRecordTypmodRegistry *)
 
void AtEOXact_TypeCache (void)
 
void AtEOSubXact_TypeCache (void)
 

Macro Definition Documentation

◆ INVALID_TUPLEDESC_IDENTIFIER

#define INVALID_TUPLEDESC_IDENTIFIER   ((uint64) 1)

Definition at line 156 of file typcache.h.

◆ TYPECACHE_BTREE_OPFAMILY

#define TYPECACHE_BTREE_OPFAMILY   0x00200

Definition at line 146 of file typcache.h.

◆ TYPECACHE_CMP_PROC

#define TYPECACHE_CMP_PROC   0x00008

Definition at line 140 of file typcache.h.

◆ TYPECACHE_CMP_PROC_FINFO

#define TYPECACHE_CMP_PROC_FINFO   0x00040

Definition at line 143 of file typcache.h.

◆ TYPECACHE_DOMAIN_BASE_INFO

#define TYPECACHE_DOMAIN_BASE_INFO   0x01000

Definition at line 149 of file typcache.h.

◆ TYPECACHE_DOMAIN_CONSTR_INFO

#define TYPECACHE_DOMAIN_CONSTR_INFO   0x02000

Definition at line 150 of file typcache.h.

◆ TYPECACHE_EQ_OPR

#define TYPECACHE_EQ_OPR   0x00001

Definition at line 137 of file typcache.h.

◆ TYPECACHE_EQ_OPR_FINFO

#define TYPECACHE_EQ_OPR_FINFO   0x00020

Definition at line 142 of file typcache.h.

◆ TYPECACHE_GT_OPR

#define TYPECACHE_GT_OPR   0x00004

Definition at line 139 of file typcache.h.

◆ TYPECACHE_HASH_EXTENDED_PROC

#define TYPECACHE_HASH_EXTENDED_PROC   0x04000

Definition at line 151 of file typcache.h.

◆ TYPECACHE_HASH_EXTENDED_PROC_FINFO

#define TYPECACHE_HASH_EXTENDED_PROC_FINFO   0x08000

Definition at line 152 of file typcache.h.

◆ TYPECACHE_HASH_OPFAMILY

#define TYPECACHE_HASH_OPFAMILY   0x00400

Definition at line 147 of file typcache.h.

◆ TYPECACHE_HASH_PROC

#define TYPECACHE_HASH_PROC   0x00010

Definition at line 141 of file typcache.h.

◆ TYPECACHE_HASH_PROC_FINFO

#define TYPECACHE_HASH_PROC_FINFO   0x00080

Definition at line 144 of file typcache.h.

◆ TYPECACHE_LT_OPR

#define TYPECACHE_LT_OPR   0x00002

Definition at line 138 of file typcache.h.

◆ TYPECACHE_MULTIRANGE_INFO

#define TYPECACHE_MULTIRANGE_INFO   0x10000

Definition at line 153 of file typcache.h.

◆ TYPECACHE_RANGE_INFO

#define TYPECACHE_RANGE_INFO   0x00800

Definition at line 148 of file typcache.h.

◆ TYPECACHE_TUPDESC

#define TYPECACHE_TUPDESC   0x00100

Definition at line 145 of file typcache.h.

Typedef Documentation

◆ DomainConstraintCache

Definition at line 26 of file typcache.h.

◆ DomainConstraintRef

◆ SharedRecordTypmodRegistry

Definition at line 176 of file typcache.h.

◆ TypeCacheEntry

Function Documentation

◆ assign_record_type_identifier()

uint64 assign_record_type_identifier ( Oid  type_id,
int32  typmod 
)

Definition at line 2132 of file typcache.c.

2133{
2134 if (type_id != RECORDOID)
2135 {
2136 /*
2137 * It's a named composite type, so use the regular typcache.
2138 */
2139 TypeCacheEntry *typentry;
2140
2141 typentry = lookup_type_cache(type_id, TYPECACHE_TUPDESC);
2142 if (typentry->tupDesc == NULL)
2143 ereport(ERROR,
2144 (errcode(ERRCODE_WRONG_OBJECT_TYPE),
2145 errmsg("type %s is not composite",
2146 format_type_be(type_id))));
2147 Assert(typentry->tupDesc_identifier != 0);
2148 return typentry->tupDesc_identifier;
2149 }
2150 else
2151 {
2152 /*
2153 * It's a transient record type, so look in our record-type table.
2154 */
2155 if (typmod >= 0 && typmod < RecordCacheArrayLen &&
2156 RecordCacheArray[typmod].tupdesc != NULL)
2157 {
2158 Assert(RecordCacheArray[typmod].id != 0);
2159 return RecordCacheArray[typmod].id;
2160 }
2161
2162 /* For anonymous or unrecognized record type, generate a new ID */
2163 return ++tupledesc_id_counter;
2164 }
2165}
int errcode(int sqlerrcode)
Definition: elog.c:853
int errmsg(const char *fmt,...)
Definition: elog.c:1070
#define ERROR
Definition: elog.h:39
#define ereport(elevel,...)
Definition: elog.h:149
char * format_type_be(Oid type_oid)
Definition: format_type.c:343
Assert(PointerIsAligned(start, uint64))
uint64 tupDesc_identifier
Definition: typcache.h:90
TupleDesc tupDesc
Definition: typcache.h:89
static RecordCacheArrayEntry * RecordCacheArray
Definition: typcache.c:304
static int32 RecordCacheArrayLen
Definition: typcache.c:305
static uint64 tupledesc_id_counter
Definition: typcache.c:313
TypeCacheEntry * lookup_type_cache(Oid type_id, int flags)
Definition: typcache.c:386
#define TYPECACHE_TUPDESC
Definition: typcache.h:145

References Assert(), ereport, errcode(), errmsg(), ERROR, format_type_be(), RecordCacheArrayEntry::id, lookup_type_cache(), RecordCacheArray, RecordCacheArrayLen, TypeCacheEntry::tupDesc, TypeCacheEntry::tupDesc_identifier, tupledesc_id_counter, and TYPECACHE_TUPDESC.

Referenced by expanded_record_fetch_tupdesc(), make_expanded_record_from_tupdesc(), and make_expanded_record_from_typeid().

◆ assign_record_type_typmod()

void assign_record_type_typmod ( TupleDesc  tupDesc)

Definition at line 2040 of file typcache.c.

2041{
2042 RecordCacheEntry *recentry;
2043 TupleDesc entDesc;
2044 bool found;
2045 MemoryContext oldcxt;
2046
2047 Assert(tupDesc->tdtypeid == RECORDOID);
2048
2049 if (RecordCacheHash == NULL)
2050 {
2051 /* First time through: initialize the hash table */
2052 HASHCTL ctl;
2053
2054 ctl.keysize = sizeof(TupleDesc); /* just the pointer */
2055 ctl.entrysize = sizeof(RecordCacheEntry);
2058 RecordCacheHash = hash_create("Record information cache", 64,
2059 &ctl,
2061
2062 /* Also make sure CacheMemoryContext exists */
2063 if (!CacheMemoryContext)
2065 }
2066
2067 /*
2068 * Find a hashtable entry for this tuple descriptor. We don't use
2069 * HASH_ENTER yet, because if it's missing, we need to make sure that all
2070 * the allocations succeed before we create the new entry.
2071 */
2073 &tupDesc,
2074 HASH_FIND, &found);
2075 if (found && recentry->tupdesc != NULL)
2076 {
2077 tupDesc->tdtypmod = recentry->tupdesc->tdtypmod;
2078 return;
2079 }
2080
2081 /* Not present, so need to manufacture an entry */
2083
2084 /* Look in the SharedRecordTypmodRegistry, if attached */
2085 entDesc = find_or_make_matching_shared_tupledesc(tupDesc);
2086 if (entDesc == NULL)
2087 {
2088 /*
2089 * Make sure we have room before we CreateTupleDescCopy() or advance
2090 * NextRecordTypmod.
2091 */
2093
2094 /* Reference-counted local cache only. */
2095 entDesc = CreateTupleDescCopy(tupDesc);
2096 entDesc->tdrefcount = 1;
2097 entDesc->tdtypmod = NextRecordTypmod++;
2098 }
2099 else
2100 {
2102 }
2103
2104 RecordCacheArray[entDesc->tdtypmod].tupdesc = entDesc;
2105
2106 /* Assign a unique tupdesc identifier, too. */
2108
2109 /* Fully initialized; create the hash table entry */
2111 &tupDesc,
2112 HASH_ENTER, NULL);
2113 recentry->tupdesc = entDesc;
2114
2115 /* Update the caller's tuple descriptor. */
2116 tupDesc->tdtypmod = entDesc->tdtypmod;
2117
2118 MemoryContextSwitchTo(oldcxt);
2119}
void CreateCacheMemoryContext(void)
Definition: catcache.c:708
void * hash_search(HTAB *hashp, const void *keyPtr, HASHACTION action, bool *foundPtr)
Definition: dynahash.c:955
HTAB * hash_create(const char *tabname, long nelem, const HASHCTL *info, int flags)
Definition: dynahash.c:352
@ HASH_FIND
Definition: hsearch.h:113
@ HASH_ENTER
Definition: hsearch.h:114
#define HASH_ELEM
Definition: hsearch.h:95
#define HASH_COMPARE
Definition: hsearch.h:99
#define HASH_FUNCTION
Definition: hsearch.h:98
MemoryContext CacheMemoryContext
Definition: mcxt.c:152
static MemoryContext MemoryContextSwitchTo(MemoryContext context)
Definition: palloc.h:124
tree ctl
Definition: radixtree.h:1838
TupleDesc tupdesc
Definition: typcache.c:174
int tdrefcount
Definition: tupdesc.h:134
int32 tdtypmod
Definition: tupdesc.h:133
Oid tdtypeid
Definition: tupdesc.h:132
TupleDesc CreateTupleDescCopy(TupleDesc tupdesc)
Definition: tupdesc.c:234
struct TupleDescData * TupleDesc
Definition: tupdesc.h:139
static TupleDesc find_or_make_matching_shared_tupledesc(TupleDesc tupdesc)
Definition: typcache.c:2929
static int32 NextRecordTypmod
Definition: typcache.c:306
static HTAB * RecordCacheHash
Definition: typcache.c:295
struct RecordCacheEntry RecordCacheEntry
static int record_type_typmod_compare(const void *a, const void *b, size_t size)
Definition: typcache.c:2024
static void ensure_record_cache_typmod_slot_exists(int32 typmod)
Definition: typcache.c:1797
static uint32 record_type_typmod_hash(const void *data, size_t size)
Definition: typcache.c:2013

References Assert(), CacheMemoryContext, CreateCacheMemoryContext(), CreateTupleDescCopy(), ctl, ensure_record_cache_typmod_slot_exists(), find_or_make_matching_shared_tupledesc(), HASH_COMPARE, hash_create(), HASH_ELEM, HASH_ENTER, HASH_FIND, HASH_FUNCTION, hash_search(), RecordCacheArrayEntry::id, MemoryContextSwitchTo(), NextRecordTypmod, record_type_typmod_compare(), record_type_typmod_hash(), RecordCacheArray, RecordCacheHash, TupleDescData::tdrefcount, TupleDescData::tdtypeid, TupleDescData::tdtypmod, RecordCacheEntry::tupdesc, RecordCacheArrayEntry::tupdesc, and tupledesc_id_counter.

Referenced by BlessTupleDesc(), ER_get_flat_size(), internal_get_result_type(), and SPI_returntuple().

◆ AtEOSubXact_TypeCache()

void AtEOSubXact_TypeCache ( void  )

Definition at line 3184 of file typcache.c.

3185{
3187}
static void finalize_in_progress_typentries(void)
Definition: typcache.c:3159

References finalize_in_progress_typentries().

Referenced by AbortSubTransaction(), and CommitSubTransaction().

◆ AtEOXact_TypeCache()

void AtEOXact_TypeCache ( void  )

◆ compare_values_of_enum()

int compare_values_of_enum ( TypeCacheEntry tcache,
Oid  arg1,
Oid  arg2 
)

Definition at line 2650 of file typcache.c.

2651{
2652 TypeCacheEnumData *enumdata;
2653 EnumItem *item1;
2654 EnumItem *item2;
2655
2656 /*
2657 * Equal OIDs are certainly equal --- this case was probably handled by
2658 * our caller, but we may as well check.
2659 */
2660 if (arg1 == arg2)
2661 return 0;
2662
2663 /* Load up the cache if first time through */
2664 if (tcache->enumData == NULL)
2665 load_enum_cache_data(tcache);
2666 enumdata = tcache->enumData;
2667
2668 /*
2669 * If both OIDs are known-sorted, we can just compare them directly.
2670 */
2671 if (enum_known_sorted(enumdata, arg1) &&
2672 enum_known_sorted(enumdata, arg2))
2673 {
2674 if (arg1 < arg2)
2675 return -1;
2676 else
2677 return 1;
2678 }
2679
2680 /*
2681 * Slow path: we have to identify their actual sort-order positions.
2682 */
2683 item1 = find_enumitem(enumdata, arg1);
2684 item2 = find_enumitem(enumdata, arg2);
2685
2686 if (item1 == NULL || item2 == NULL)
2687 {
2688 /*
2689 * We couldn't find one or both values. That means the enum has
2690 * changed under us, so re-initialize the cache and try again. We
2691 * don't bother retrying the known-sorted case in this path.
2692 */
2693 load_enum_cache_data(tcache);
2694 enumdata = tcache->enumData;
2695
2696 item1 = find_enumitem(enumdata, arg1);
2697 item2 = find_enumitem(enumdata, arg2);
2698
2699 /*
2700 * If we still can't find the values, complain: we must have corrupt
2701 * data.
2702 */
2703 if (item1 == NULL)
2704 elog(ERROR, "enum value %u not found in cache for enum %s",
2705 arg1, format_type_be(tcache->type_id));
2706 if (item2 == NULL)
2707 elog(ERROR, "enum value %u not found in cache for enum %s",
2708 arg2, format_type_be(tcache->type_id));
2709 }
2710
2711 if (item1->sort_order < item2->sort_order)
2712 return -1;
2713 else if (item1->sort_order > item2->sort_order)
2714 return 1;
2715 else
2716 return 0;
2717}
#define elog(elevel,...)
Definition: elog.h:225
float4 sort_order
Definition: typcache.c:150
struct TypeCacheEnumData * enumData
Definition: typcache.h:130
static void load_enum_cache_data(TypeCacheEntry *tcache)
Definition: typcache.c:2723
static EnumItem * find_enumitem(TypeCacheEnumData *enumdata, Oid arg)
Definition: typcache.c:2878
static bool enum_known_sorted(TypeCacheEnumData *enumdata, Oid arg)
Definition: typcache.c:2621

References elog, enum_known_sorted(), TypeCacheEntry::enumData, ERROR, find_enumitem(), format_type_be(), load_enum_cache_data(), EnumItem::sort_order, and TypeCacheEntry::type_id.

Referenced by enum_cmp_internal().

◆ DomainHasConstraints()

bool DomainHasConstraints ( Oid  type_id)

Definition at line 1487 of file typcache.c.

1488{
1489 TypeCacheEntry *typentry;
1490
1491 /*
1492 * Note: a side effect is to cause the typcache's domain data to become
1493 * valid. This is fine since we'll likely need it soon if there is any.
1494 */
1496
1497 return (typentry->domainData != NULL);
1498}
DomainConstraintCache * domainData
Definition: typcache.h:121
#define TYPECACHE_DOMAIN_CONSTR_INFO
Definition: typcache.h:150

References TypeCacheEntry::domainData, lookup_type_cache(), and TYPECACHE_DOMAIN_CONSTR_INFO.

Referenced by ATColumnChangeRequiresRewrite(), ATExecAddColumn(), eval_const_expressions_mutator(), ExecInitJsonCoercion(), and transformJsonFuncExpr().

◆ InitDomainConstraintRef()

void InitDomainConstraintRef ( Oid  type_id,
DomainConstraintRef ref,
MemoryContext  refctx,
bool  need_exprstate 
)

Definition at line 1400 of file typcache.c.

1402{
1403 /* Look up the typcache entry --- we assume it survives indefinitely */
1405 ref->need_exprstate = need_exprstate;
1406 /* For safety, establish the callback before acquiring a refcount */
1407 ref->refctx = refctx;
1408 ref->dcc = NULL;
1410 ref->callback.arg = ref;
1412 /* Acquire refcount if there are constraints, and set up exported list */
1413 if (ref->tcache->domainData)
1414 {
1415 ref->dcc = ref->tcache->domainData;
1416 ref->dcc->dccRefCount++;
1417 if (ref->need_exprstate)
1419 ref->refctx);
1420 else
1421 ref->constraints = ref->dcc->constraints;
1422 }
1423 else
1424 ref->constraints = NIL;
1425}
void MemoryContextRegisterResetCallback(MemoryContext context, MemoryContextCallback *cb)
Definition: mcxt.c:568
#define NIL
Definition: pg_list.h:68
DomainConstraintCache * dcc
Definition: typcache.h:172
MemoryContext refctx
Definition: typcache.h:167
MemoryContextCallback callback
Definition: typcache.h:173
TypeCacheEntry * tcache
Definition: typcache.h:168
MemoryContextCallbackFunction func
Definition: palloc.h:49
static List * prep_domain_constraints(List *constraints, MemoryContext execctx)
Definition: typcache.c:1362
static void dccref_deletion_callback(void *arg)
Definition: typcache.c:1341

References MemoryContextCallback::arg, DomainConstraintRef::callback, DomainConstraintCache::constraints, DomainConstraintRef::constraints, DomainConstraintRef::dcc, dccref_deletion_callback(), DomainConstraintCache::dccRefCount, TypeCacheEntry::domainData, MemoryContextCallback::func, lookup_type_cache(), MemoryContextRegisterResetCallback(), DomainConstraintRef::need_exprstate, NIL, prep_domain_constraints(), DomainConstraintRef::refctx, DomainConstraintRef::tcache, and TYPECACHE_DOMAIN_CONSTR_INFO.

Referenced by domain_state_setup(), and ExecInitCoerceToDomain().

◆ lookup_rowtype_tupdesc()

◆ lookup_rowtype_tupdesc_copy()

TupleDesc lookup_rowtype_tupdesc_copy ( Oid  type_id,
int32  typmod 
)

Definition at line 1954 of file typcache.c.

1955{
1956 TupleDesc tmp;
1957
1958 tmp = lookup_rowtype_tupdesc_internal(type_id, typmod, false);
1959 return CreateTupleDescCopyConstr(tmp);
1960}
TupleDesc CreateTupleDescCopyConstr(TupleDesc tupdesc)
Definition: tupdesc.c:322

References CreateTupleDescCopyConstr(), and lookup_rowtype_tupdesc_internal().

Referenced by ExecInitExprRec(), ExecMakeTableFunctionResult(), get_expr_result_type(), internal_get_result_type(), and TypeGetTupleDesc().

◆ lookup_rowtype_tupdesc_domain()

TupleDesc lookup_rowtype_tupdesc_domain ( Oid  type_id,
int32  typmod,
bool  noError 
)

Definition at line 1976 of file typcache.c.

1977{
1978 TupleDesc tupDesc;
1979
1980 if (type_id != RECORDOID)
1981 {
1982 /*
1983 * Check for domain or named composite type. We might as well load
1984 * whichever data is needed.
1985 */
1986 TypeCacheEntry *typentry;
1987
1988 typentry = lookup_type_cache(type_id,
1991 if (typentry->typtype == TYPTYPE_DOMAIN)
1993 typentry->domainBaseTypmod,
1994 noError);
1995 if (typentry->tupDesc == NULL && !noError)
1996 ereport(ERROR,
1997 (errcode(ERRCODE_WRONG_OBJECT_TYPE),
1998 errmsg("type %s is not composite",
1999 format_type_be(type_id))));
2000 tupDesc = typentry->tupDesc;
2001 }
2002 else
2003 tupDesc = lookup_rowtype_tupdesc_internal(type_id, typmod, noError);
2004 if (tupDesc != NULL)
2005 PinTupleDesc(tupDesc);
2006 return tupDesc;
2007}
int32 domainBaseTypmod
Definition: typcache.h:115
char typtype
Definition: typcache.h:43
Oid domainBaseType
Definition: typcache.h:114
TupleDesc lookup_rowtype_tupdesc_noerror(Oid type_id, int32 typmod, bool noError)
Definition: typcache.c:1937
#define TYPECACHE_DOMAIN_BASE_INFO
Definition: typcache.h:149

References TypeCacheEntry::domainBaseType, TypeCacheEntry::domainBaseTypmod, ereport, errcode(), errmsg(), ERROR, format_type_be(), lookup_rowtype_tupdesc_internal(), lookup_rowtype_tupdesc_noerror(), lookup_type_cache(), PinTupleDesc, TypeCacheEntry::tupDesc, TYPECACHE_DOMAIN_BASE_INFO, TYPECACHE_TUPDESC, and TypeCacheEntry::typtype.

Referenced by ExecEvalWholeRowVar(), hstore_from_record(), hstore_populate_record(), plperl_sv_to_datum(), and rowtype_field_matches().

◆ lookup_rowtype_tupdesc_noerror()

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

Definition at line 1937 of file typcache.c.

1938{
1939 TupleDesc tupDesc;
1940
1941 tupDesc = lookup_rowtype_tupdesc_internal(type_id, typmod, noError);
1942 if (tupDesc != NULL)
1943 PinTupleDesc(tupDesc);
1944 return tupDesc;
1945}

References lookup_rowtype_tupdesc_internal(), and PinTupleDesc.

Referenced by lookup_rowtype_tupdesc_domain().

◆ lookup_type_cache()

TypeCacheEntry * lookup_type_cache ( Oid  type_id,
int  flags 
)

Definition at line 386 of file typcache.c.

387{
388 TypeCacheEntry *typentry;
389 bool found;
390 int in_progress_offset;
391
392 if (TypeCacheHash == NULL)
393 {
394 /* First time through: initialize the hash table */
395 HASHCTL ctl;
396 int allocsize;
397
398 ctl.keysize = sizeof(Oid);
399 ctl.entrysize = sizeof(TypeCacheEntry);
400
401 /*
402 * TypeCacheEntry takes hash value from the system cache. For
403 * TypeCacheHash we use the same hash in order to speedup search by
404 * hash value. This is used by hash_seq_init_with_hash_value().
405 */
406 ctl.hash = type_cache_syshash;
407
408 TypeCacheHash = hash_create("Type information cache", 64,
410
412
413 ctl.keysize = sizeof(Oid);
414 ctl.entrysize = sizeof(RelIdToTypeIdCacheEntry);
415 RelIdToTypeIdCacheHash = hash_create("Map from relid to OID of cached composite type", 64,
417
418 /* Also set up callbacks for SI invalidations */
423
424 /* Also make sure CacheMemoryContext exists */
427
428 /*
429 * reserve enough in_progress_list slots for many cases
430 */
431 allocsize = 4;
434 allocsize * sizeof(*in_progress_list));
435 in_progress_list_maxlen = allocsize;
436 }
437
438 Assert(TypeCacheHash != NULL && RelIdToTypeIdCacheHash != NULL);
439
440 /* Register to catch invalidation messages */
442 {
443 int allocsize;
444
445 allocsize = in_progress_list_maxlen * 2;
447 allocsize * sizeof(*in_progress_list));
448 in_progress_list_maxlen = allocsize;
449 }
450 in_progress_offset = in_progress_list_len++;
451 in_progress_list[in_progress_offset] = type_id;
452
453 /* Try to look up an existing entry */
455 &type_id,
456 HASH_FIND, NULL);
457 if (typentry == NULL)
458 {
459 /*
460 * If we didn't find one, we want to make one. But first look up the
461 * pg_type row, just to make sure we don't make a cache entry for an
462 * invalid type OID. If the type OID is not valid, present a
463 * user-facing error, since some code paths such as domain_in() allow
464 * this function to be reached with a user-supplied OID.
465 */
466 HeapTuple tp;
467 Form_pg_type typtup;
468
469 tp = SearchSysCache1(TYPEOID, ObjectIdGetDatum(type_id));
470 if (!HeapTupleIsValid(tp))
472 (errcode(ERRCODE_UNDEFINED_OBJECT),
473 errmsg("type with OID %u does not exist", type_id)));
474 typtup = (Form_pg_type) GETSTRUCT(tp);
475 if (!typtup->typisdefined)
477 (errcode(ERRCODE_UNDEFINED_OBJECT),
478 errmsg("type \"%s\" is only a shell",
479 NameStr(typtup->typname))));
480
481 /* Now make the typcache entry */
483 &type_id,
484 HASH_ENTER, &found);
485 Assert(!found); /* it wasn't there a moment ago */
486
487 MemSet(typentry, 0, sizeof(TypeCacheEntry));
488
489 /* These fields can never change, by definition */
490 typentry->type_id = type_id;
491 typentry->type_id_hash = get_hash_value(TypeCacheHash, &type_id);
492
493 /* Keep this part in sync with the code below */
494 typentry->typlen = typtup->typlen;
495 typentry->typbyval = typtup->typbyval;
496 typentry->typalign = typtup->typalign;
497 typentry->typstorage = typtup->typstorage;
498 typentry->typtype = typtup->typtype;
499 typentry->typrelid = typtup->typrelid;
500 typentry->typsubscript = typtup->typsubscript;
501 typentry->typelem = typtup->typelem;
502 typentry->typcollation = typtup->typcollation;
503 typentry->flags |= TCFLAGS_HAVE_PG_TYPE_DATA;
504
505 /* If it's a domain, immediately thread it into the domain cache list */
506 if (typentry->typtype == TYPTYPE_DOMAIN)
507 {
509 firstDomainTypeEntry = typentry;
510 }
511
512 ReleaseSysCache(tp);
513 }
514 else if (!(typentry->flags & TCFLAGS_HAVE_PG_TYPE_DATA))
515 {
516 /*
517 * We have an entry, but its pg_type row got changed, so reload the
518 * data obtained directly from pg_type.
519 */
520 HeapTuple tp;
521 Form_pg_type typtup;
522
523 tp = SearchSysCache1(TYPEOID, ObjectIdGetDatum(type_id));
524 if (!HeapTupleIsValid(tp))
526 (errcode(ERRCODE_UNDEFINED_OBJECT),
527 errmsg("type with OID %u does not exist", type_id)));
528 typtup = (Form_pg_type) GETSTRUCT(tp);
529 if (!typtup->typisdefined)
531 (errcode(ERRCODE_UNDEFINED_OBJECT),
532 errmsg("type \"%s\" is only a shell",
533 NameStr(typtup->typname))));
534
535 /*
536 * Keep this part in sync with the code above. Many of these fields
537 * shouldn't ever change, particularly typtype, but copy 'em anyway.
538 */
539 typentry->typlen = typtup->typlen;
540 typentry->typbyval = typtup->typbyval;
541 typentry->typalign = typtup->typalign;
542 typentry->typstorage = typtup->typstorage;
543 typentry->typtype = typtup->typtype;
544 typentry->typrelid = typtup->typrelid;
545 typentry->typsubscript = typtup->typsubscript;
546 typentry->typelem = typtup->typelem;
547 typentry->typcollation = typtup->typcollation;
548 typentry->flags |= TCFLAGS_HAVE_PG_TYPE_DATA;
549
550 ReleaseSysCache(tp);
551 }
552
553 /*
554 * Look up opclasses if we haven't already and any dependent info is
555 * requested.
556 */
562 {
563 Oid opclass;
564
565 opclass = GetDefaultOpClass(type_id, BTREE_AM_OID);
566 if (OidIsValid(opclass))
567 {
568 typentry->btree_opf = get_opclass_family(opclass);
569 typentry->btree_opintype = get_opclass_input_type(opclass);
570 }
571 else
572 {
573 typentry->btree_opf = typentry->btree_opintype = InvalidOid;
574 }
575
576 /*
577 * Reset information derived from btree opclass. Note in particular
578 * that we'll redetermine the eq_opr even if we previously found one;
579 * this matters in case a btree opclass has been added to a type that
580 * previously had only a hash opclass.
581 */
582 typentry->flags &= ~(TCFLAGS_CHECKED_EQ_OPR |
587 }
588
589 /*
590 * If we need to look up equality operator, and there's no btree opclass,
591 * force lookup of hash opclass.
592 */
593 if ((flags & (TYPECACHE_EQ_OPR | TYPECACHE_EQ_OPR_FINFO)) &&
594 !(typentry->flags & TCFLAGS_CHECKED_EQ_OPR) &&
595 typentry->btree_opf == InvalidOid)
597
602 !(typentry->flags & TCFLAGS_CHECKED_HASH_OPCLASS))
603 {
604 Oid opclass;
605
606 opclass = GetDefaultOpClass(type_id, HASH_AM_OID);
607 if (OidIsValid(opclass))
608 {
609 typentry->hash_opf = get_opclass_family(opclass);
610 typentry->hash_opintype = get_opclass_input_type(opclass);
611 }
612 else
613 {
614 typentry->hash_opf = typentry->hash_opintype = InvalidOid;
615 }
616
617 /*
618 * Reset information derived from hash opclass. We do *not* reset the
619 * eq_opr; if we already found one from the btree opclass, that
620 * decision is still good.
621 */
622 typentry->flags &= ~(TCFLAGS_CHECKED_HASH_PROC |
625 }
626
627 /*
628 * Look for requested operators and functions, if we haven't already.
629 */
630 if ((flags & (TYPECACHE_EQ_OPR | TYPECACHE_EQ_OPR_FINFO)) &&
631 !(typentry->flags & TCFLAGS_CHECKED_EQ_OPR))
632 {
633 Oid eq_opr = InvalidOid;
634
635 if (typentry->btree_opf != InvalidOid)
636 eq_opr = get_opfamily_member(typentry->btree_opf,
637 typentry->btree_opintype,
638 typentry->btree_opintype,
640 if (eq_opr == InvalidOid &&
641 typentry->hash_opf != InvalidOid)
642 eq_opr = get_opfamily_member(typentry->hash_opf,
643 typentry->hash_opintype,
644 typentry->hash_opintype,
646
647 /*
648 * If the proposed equality operator is array_eq or record_eq, check
649 * to see if the element type or column types support equality. If
650 * not, array_eq or record_eq would fail at runtime, so we don't want
651 * to report that the type has equality. (We can omit similar
652 * checking for ranges and multiranges because ranges can't be created
653 * in the first place unless their subtypes support equality.)
654 */
655 if (eq_opr == ARRAY_EQ_OP &&
657 eq_opr = InvalidOid;
658 else if (eq_opr == RECORD_EQ_OP &&
660 eq_opr = InvalidOid;
661
662 /* Force update of eq_opr_finfo only if we're changing state */
663 if (typentry->eq_opr != eq_opr)
664 typentry->eq_opr_finfo.fn_oid = InvalidOid;
665
666 typentry->eq_opr = eq_opr;
667
668 /*
669 * Reset info about hash functions whenever we pick up new info about
670 * equality operator. This is so we can ensure that the hash
671 * functions match the operator.
672 */
673 typentry->flags &= ~(TCFLAGS_CHECKED_HASH_PROC |
675 typentry->flags |= TCFLAGS_CHECKED_EQ_OPR;
676 }
677 if ((flags & TYPECACHE_LT_OPR) &&
678 !(typentry->flags & TCFLAGS_CHECKED_LT_OPR))
679 {
680 Oid lt_opr = InvalidOid;
681
682 if (typentry->btree_opf != InvalidOid)
683 lt_opr = get_opfamily_member(typentry->btree_opf,
684 typentry->btree_opintype,
685 typentry->btree_opintype,
687
688 /*
689 * As above, make sure array_cmp or record_cmp will succeed; but again
690 * we need no special check for ranges or multiranges.
691 */
692 if (lt_opr == ARRAY_LT_OP &&
693 !array_element_has_compare(typentry))
694 lt_opr = InvalidOid;
695 else if (lt_opr == RECORD_LT_OP &&
697 lt_opr = InvalidOid;
698
699 typentry->lt_opr = lt_opr;
700 typentry->flags |= TCFLAGS_CHECKED_LT_OPR;
701 }
702 if ((flags & TYPECACHE_GT_OPR) &&
703 !(typentry->flags & TCFLAGS_CHECKED_GT_OPR))
704 {
705 Oid gt_opr = InvalidOid;
706
707 if (typentry->btree_opf != InvalidOid)
708 gt_opr = get_opfamily_member(typentry->btree_opf,
709 typentry->btree_opintype,
710 typentry->btree_opintype,
712
713 /*
714 * As above, make sure array_cmp or record_cmp will succeed; but again
715 * we need no special check for ranges or multiranges.
716 */
717 if (gt_opr == ARRAY_GT_OP &&
718 !array_element_has_compare(typentry))
719 gt_opr = InvalidOid;
720 else if (gt_opr == RECORD_GT_OP &&
722 gt_opr = InvalidOid;
723
724 typentry->gt_opr = gt_opr;
725 typentry->flags |= TCFLAGS_CHECKED_GT_OPR;
726 }
728 !(typentry->flags & TCFLAGS_CHECKED_CMP_PROC))
729 {
730 Oid cmp_proc = InvalidOid;
731
732 if (typentry->btree_opf != InvalidOid)
733 cmp_proc = get_opfamily_proc(typentry->btree_opf,
734 typentry->btree_opintype,
735 typentry->btree_opintype,
737
738 /*
739 * As above, make sure array_cmp or record_cmp will succeed; but again
740 * we need no special check for ranges or multiranges.
741 */
742 if (cmp_proc == F_BTARRAYCMP &&
743 !array_element_has_compare(typentry))
744 cmp_proc = InvalidOid;
745 else if (cmp_proc == F_BTRECORDCMP &&
747 cmp_proc = InvalidOid;
748
749 /* Force update of cmp_proc_finfo only if we're changing state */
750 if (typentry->cmp_proc != cmp_proc)
751 typentry->cmp_proc_finfo.fn_oid = InvalidOid;
752
753 typentry->cmp_proc = cmp_proc;
754 typentry->flags |= TCFLAGS_CHECKED_CMP_PROC;
755 }
757 !(typentry->flags & TCFLAGS_CHECKED_HASH_PROC))
758 {
759 Oid hash_proc = InvalidOid;
760
761 /*
762 * We insist that the eq_opr, if one has been determined, match the
763 * hash opclass; else report there is no hash function.
764 */
765 if (typentry->hash_opf != InvalidOid &&
766 (!OidIsValid(typentry->eq_opr) ||
767 typentry->eq_opr == get_opfamily_member(typentry->hash_opf,
768 typentry->hash_opintype,
769 typentry->hash_opintype,
771 hash_proc = get_opfamily_proc(typentry->hash_opf,
772 typentry->hash_opintype,
773 typentry->hash_opintype,
775
776 /*
777 * As above, make sure hash_array, hash_record, or hash_range will
778 * succeed.
779 */
780 if (hash_proc == F_HASH_ARRAY &&
781 !array_element_has_hashing(typentry))
782 hash_proc = InvalidOid;
783 else if (hash_proc == F_HASH_RECORD &&
785 hash_proc = InvalidOid;
786 else if (hash_proc == F_HASH_RANGE &&
787 !range_element_has_hashing(typentry))
788 hash_proc = InvalidOid;
789
790 /*
791 * Likewise for hash_multirange.
792 */
793 if (hash_proc == F_HASH_MULTIRANGE &&
795 hash_proc = InvalidOid;
796
797 /* Force update of hash_proc_finfo only if we're changing state */
798 if (typentry->hash_proc != hash_proc)
800
801 typentry->hash_proc = hash_proc;
802 typentry->flags |= TCFLAGS_CHECKED_HASH_PROC;
803 }
804 if ((flags & (TYPECACHE_HASH_EXTENDED_PROC |
807 {
808 Oid hash_extended_proc = InvalidOid;
809
810 /*
811 * We insist that the eq_opr, if one has been determined, match the
812 * hash opclass; else report there is no hash function.
813 */
814 if (typentry->hash_opf != InvalidOid &&
815 (!OidIsValid(typentry->eq_opr) ||
816 typentry->eq_opr == get_opfamily_member(typentry->hash_opf,
817 typentry->hash_opintype,
818 typentry->hash_opintype,
820 hash_extended_proc = get_opfamily_proc(typentry->hash_opf,
821 typentry->hash_opintype,
822 typentry->hash_opintype,
824
825 /*
826 * As above, make sure hash_array_extended, hash_record_extended, or
827 * hash_range_extended will succeed.
828 */
829 if (hash_extended_proc == F_HASH_ARRAY_EXTENDED &&
831 hash_extended_proc = InvalidOid;
832 else if (hash_extended_proc == F_HASH_RECORD_EXTENDED &&
834 hash_extended_proc = InvalidOid;
835 else if (hash_extended_proc == F_HASH_RANGE_EXTENDED &&
837 hash_extended_proc = InvalidOid;
838
839 /*
840 * Likewise for hash_multirange_extended.
841 */
842 if (hash_extended_proc == F_HASH_MULTIRANGE_EXTENDED &&
844 hash_extended_proc = InvalidOid;
845
846 /* Force update of proc finfo only if we're changing state */
847 if (typentry->hash_extended_proc != hash_extended_proc)
849
850 typentry->hash_extended_proc = hash_extended_proc;
852 }
853
854 /*
855 * Set up fmgr lookup info as requested
856 *
857 * Note: we tell fmgr the finfo structures live in CacheMemoryContext,
858 * which is not quite right (they're really in the hash table's private
859 * memory context) but this will do for our purposes.
860 *
861 * Note: the code above avoids invalidating the finfo structs unless the
862 * referenced operator/function OID actually changes. This is to prevent
863 * unnecessary leakage of any subsidiary data attached to an finfo, since
864 * that would cause session-lifespan memory leaks.
865 */
866 if ((flags & TYPECACHE_EQ_OPR_FINFO) &&
867 typentry->eq_opr_finfo.fn_oid == InvalidOid &&
868 typentry->eq_opr != InvalidOid)
869 {
870 Oid eq_opr_func;
871
872 eq_opr_func = get_opcode(typentry->eq_opr);
873 if (eq_opr_func != InvalidOid)
874 fmgr_info_cxt(eq_opr_func, &typentry->eq_opr_finfo,
876 }
877 if ((flags & TYPECACHE_CMP_PROC_FINFO) &&
878 typentry->cmp_proc_finfo.fn_oid == InvalidOid &&
879 typentry->cmp_proc != InvalidOid)
880 {
881 fmgr_info_cxt(typentry->cmp_proc, &typentry->cmp_proc_finfo,
883 }
884 if ((flags & TYPECACHE_HASH_PROC_FINFO) &&
885 typentry->hash_proc_finfo.fn_oid == InvalidOid &&
886 typentry->hash_proc != InvalidOid)
887 {
888 fmgr_info_cxt(typentry->hash_proc, &typentry->hash_proc_finfo,
890 }
893 typentry->hash_extended_proc != InvalidOid)
894 {
896 &typentry->hash_extended_proc_finfo,
898 }
899
900 /*
901 * If it's a composite type (row type), get tupdesc if requested
902 */
903 if ((flags & TYPECACHE_TUPDESC) &&
904 typentry->tupDesc == NULL &&
905 typentry->typtype == TYPTYPE_COMPOSITE)
906 {
907 load_typcache_tupdesc(typentry);
908 }
909
910 /*
911 * If requested, get information about a range type
912 *
913 * This includes making sure that the basic info about the range element
914 * type is up-to-date.
915 */
916 if ((flags & TYPECACHE_RANGE_INFO) &&
917 typentry->typtype == TYPTYPE_RANGE)
918 {
919 if (typentry->rngelemtype == NULL)
920 load_rangetype_info(typentry);
921 else if (!(typentry->rngelemtype->flags & TCFLAGS_HAVE_PG_TYPE_DATA))
922 (void) lookup_type_cache(typentry->rngelemtype->type_id, 0);
923 }
924
925 /*
926 * If requested, get information about a multirange type
927 */
928 if ((flags & TYPECACHE_MULTIRANGE_INFO) &&
929 typentry->rngtype == NULL &&
930 typentry->typtype == TYPTYPE_MULTIRANGE)
931 {
932 load_multirangetype_info(typentry);
933 }
934
935 /*
936 * If requested, get information about a domain type
937 */
938 if ((flags & TYPECACHE_DOMAIN_BASE_INFO) &&
939 typentry->domainBaseType == InvalidOid &&
940 typentry->typtype == TYPTYPE_DOMAIN)
941 {
942 typentry->domainBaseTypmod = -1;
943 typentry->domainBaseType =
944 getBaseTypeAndTypmod(type_id, &typentry->domainBaseTypmod);
945 }
946 if ((flags & TYPECACHE_DOMAIN_CONSTR_INFO) &&
947 (typentry->flags & TCFLAGS_CHECKED_DOMAIN_CONSTRAINTS) == 0 &&
948 typentry->typtype == TYPTYPE_DOMAIN)
949 {
950 load_domaintype_info(typentry);
951 }
952
953 INJECTION_POINT("typecache-before-rel-type-cache-insert");
954
955 Assert(in_progress_offset + 1 == in_progress_list_len);
957
959
960 return typentry;
961}
#define NameStr(name)
Definition: c.h:717
#define MemSet(start, val, len)
Definition: c.h:991
#define OidIsValid(objectId)
Definition: c.h:746
uint32 get_hash_value(HTAB *hashp, const void *keyPtr)
Definition: dynahash.c:911
void fmgr_info_cxt(Oid functionId, FmgrInfo *finfo, MemoryContext mcxt)
Definition: fmgr.c:137
#define HASHSTANDARD_PROC
Definition: hash.h:355
#define HASHEXTENDED_PROC
Definition: hash.h:356
#define HASH_BLOBS
Definition: hsearch.h:97
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
static void * GETSTRUCT(const HeapTupleData *tuple)
Definition: htup_details.h:728
Oid GetDefaultOpClass(Oid type_id, Oid am_id)
Definition: indexcmds.c:2343
#define INJECTION_POINT(name)
void CacheRegisterRelcacheCallback(RelcacheCallbackFunction func, Datum arg)
Definition: inval.c:1844
void CacheRegisterSyscacheCallback(int cacheid, SyscacheCallbackFunction func, Datum arg)
Definition: inval.c:1802
Oid get_opclass_input_type(Oid opclass)
Definition: lsyscache.c:1247
Oid get_opclass_family(Oid opclass)
Definition: lsyscache.c:1225
Oid get_opfamily_proc(Oid opfamily, Oid lefttype, Oid righttype, int16 procnum)
Definition: lsyscache.c:831
RegProcedure get_opcode(Oid opno)
Definition: lsyscache.c:1368
Oid get_opfamily_member(Oid opfamily, Oid lefttype, Oid righttype, int16 strategy)
Definition: lsyscache.c:167
Oid getBaseTypeAndTypmod(Oid typid, int32 *typmod)
Definition: lsyscache.c:2621
void * MemoryContextAlloc(MemoryContext context, Size size)
Definition: mcxt.c:1181
void * repalloc(void *pointer, Size size)
Definition: mcxt.c:1544
#define BTORDER_PROC
Definition: nbtree.h:712
FormData_pg_type * Form_pg_type
Definition: pg_type.h:261
uintptr_t Datum
Definition: postgres.h:69
static Datum ObjectIdGetDatum(Oid X)
Definition: postgres.h:257
#define InvalidOid
Definition: postgres_ext.h:37
unsigned int Oid
Definition: postgres_ext.h:32
#define BTGreaterStrategyNumber
Definition: stratnum.h:33
#define HTEqualStrategyNumber
Definition: stratnum.h:41
#define BTLessStrategyNumber
Definition: stratnum.h:29
#define BTEqualStrategyNumber
Definition: stratnum.h:31
Oid fn_oid
Definition: fmgr.h:59
uint32 type_id_hash
Definition: typcache.h:36
FmgrInfo hash_proc_finfo
Definition: typcache.h:77
Oid hash_extended_proc
Definition: typcache.h:66
Oid typsubscript
Definition: typcache.h:45
FmgrInfo cmp_proc_finfo
Definition: typcache.h:76
char typalign
Definition: typcache.h:41
struct TypeCacheEntry * rngelemtype
Definition: typcache.h:98
FmgrInfo hash_extended_proc_finfo
Definition: typcache.h:78
struct TypeCacheEntry * rngtype
Definition: typcache.h:108
FmgrInfo eq_opr_finfo
Definition: typcache.h:75
Oid btree_opintype
Definition: typcache.h:58
struct TypeCacheEntry * nextDomain
Definition: typcache.h:133
bool typbyval
Definition: typcache.h:40
int16 typlen
Definition: typcache.h:39
Oid hash_opintype
Definition: typcache.h:60
Oid typcollation
Definition: typcache.h:47
char typstorage
Definition: typcache.h:42
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:269
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:221
#define TCFLAGS_CHECKED_BTREE_OPCLASS
Definition: typcache.c:100
#define TCFLAGS_CHECKED_HASH_OPCLASS
Definition: typcache.c:101
static bool range_element_has_hashing(TypeCacheEntry *typentry)
Definition: typcache.c:1713
static void insert_rel_type_cache_if_needed(TypeCacheEntry *typentry)
Definition: typcache.c:3061
static bool record_fields_have_hashing(TypeCacheEntry *typentry)
Definition: typcache.c:1592
static HTAB * RelIdToTypeIdCacheHash
Definition: typcache.c:87
static bool record_fields_have_extended_hashing(TypeCacheEntry *typentry)
Definition: typcache.c:1600
static int in_progress_list_maxlen
Definition: typcache.c:228
static Oid * in_progress_list
Definition: typcache.c:226
#define TCFLAGS_CHECKED_GT_OPR
Definition: typcache.c:104
static bool multirange_element_has_hashing(TypeCacheEntry *typentry)
Definition: typcache.c:1753
static bool record_fields_have_equality(TypeCacheEntry *typentry)
Definition: typcache.c:1576
#define TCFLAGS_CHECKED_LT_OPR
Definition: typcache.c:103
#define TCFLAGS_CHECKED_HASH_PROC
Definition: typcache.c:106
static bool array_element_has_extended_hashing(TypeCacheEntry *typentry)
Definition: typcache.c:1538
static bool array_element_has_hashing(TypeCacheEntry *typentry)
Definition: typcache.c:1530
static void load_multirangetype_info(TypeCacheEntry *typentry)
Definition: typcache.c:1059
static uint32 type_cache_syshash(const void *key, Size keysize)
Definition: typcache.c:359
#define TCFLAGS_CHECKED_CMP_PROC
Definition: typcache.c:105
static bool multirange_element_has_extended_hashing(TypeCacheEntry *typentry)
Definition: typcache.c:1761
static int in_progress_list_len
Definition: typcache.c:227
static bool array_element_has_equality(TypeCacheEntry *typentry)
Definition: typcache.c:1514
static void load_rangetype_info(TypeCacheEntry *typentry)
Definition: typcache.c:1001
static bool range_element_has_extended_hashing(TypeCacheEntry *typentry)
Definition: typcache.c:1721
static TypeCacheEntry * firstDomainTypeEntry
Definition: typcache.c:96
struct RelIdToTypeIdCacheEntry RelIdToTypeIdCacheEntry
#define TCFLAGS_CHECKED_HASH_EXTENDED_PROC
Definition: typcache.c:107
static void TypeCacheTypCallback(Datum arg, int cacheid, uint32 hashvalue)
Definition: typcache.c:2511
static void TypeCacheConstrCallback(Datum arg, int cacheid, uint32 hashvalue)
Definition: typcache.c:2597
static void TypeCacheOpcCallback(Datum arg, int cacheid, uint32 hashvalue)
Definition: typcache.c:2568
static void load_domaintype_info(TypeCacheEntry *typentry)
Definition: typcache.c:1081
static void TypeCacheRelCallback(Datum arg, Oid relid)
Definition: typcache.c:2415
static bool array_element_has_compare(TypeCacheEntry *typentry)
Definition: typcache.c:1522
#define TCFLAGS_HAVE_PG_TYPE_DATA
Definition: typcache.c:99
#define TCFLAGS_CHECKED_DOMAIN_CONSTRAINTS
Definition: typcache.c:118
static HTAB * TypeCacheHash
Definition: typcache.c:79
static bool record_fields_have_compare(TypeCacheEntry *typentry)
Definition: typcache.c:1584
#define TCFLAGS_CHECKED_EQ_OPR
Definition: typcache.c:102
static void load_typcache_tupdesc(TypeCacheEntry *typentry)
Definition: typcache.c:967
#define TYPECACHE_HASH_PROC_FINFO
Definition: typcache.h:144
#define TYPECACHE_EQ_OPR
Definition: typcache.h:137
#define TYPECACHE_HASH_OPFAMILY
Definition: typcache.h:147
#define TYPECACHE_MULTIRANGE_INFO
Definition: typcache.h:153
#define TYPECACHE_EQ_OPR_FINFO
Definition: typcache.h:142
#define TYPECACHE_HASH_EXTENDED_PROC
Definition: typcache.h:151
#define TYPECACHE_BTREE_OPFAMILY
Definition: typcache.h:146
#define TYPECACHE_RANGE_INFO
Definition: typcache.h:148
#define TYPECACHE_GT_OPR
Definition: typcache.h:139
#define TYPECACHE_CMP_PROC
Definition: typcache.h:140
struct TypeCacheEntry TypeCacheEntry
#define TYPECACHE_LT_OPR
Definition: typcache.h:138
#define TYPECACHE_HASH_EXTENDED_PROC_FINFO
Definition: typcache.h:152
#define TYPECACHE_CMP_PROC_FINFO
Definition: typcache.h:143
#define TYPECACHE_HASH_PROC
Definition: typcache.h:141

References array_element_has_compare(), array_element_has_equality(), array_element_has_extended_hashing(), array_element_has_hashing(), Assert(), BTEqualStrategyNumber, BTGreaterStrategyNumber, BTLessStrategyNumber, BTORDER_PROC, TypeCacheEntry::btree_opf, TypeCacheEntry::btree_opintype, CacheMemoryContext, CacheRegisterRelcacheCallback(), CacheRegisterSyscacheCallback(), TypeCacheEntry::cmp_proc, TypeCacheEntry::cmp_proc_finfo, CreateCacheMemoryContext(), ctl, TypeCacheEntry::domainBaseType, TypeCacheEntry::domainBaseTypmod, TypeCacheEntry::eq_opr, TypeCacheEntry::eq_opr_finfo, ereport, errcode(), errmsg(), ERROR, firstDomainTypeEntry, TypeCacheEntry::flags, fmgr_info_cxt(), FmgrInfo::fn_oid, get_hash_value(), get_opclass_family(), get_opclass_input_type(), get_opcode(), get_opfamily_member(), get_opfamily_proc(), getBaseTypeAndTypmod(), GetDefaultOpClass(), GETSTRUCT(), TypeCacheEntry::gt_opr, HASH_BLOBS, hash_create(), HASH_ELEM, HASH_ENTER, TypeCacheEntry::hash_extended_proc, TypeCacheEntry::hash_extended_proc_finfo, HASH_FIND, HASH_FUNCTION, TypeCacheEntry::hash_opf, TypeCacheEntry::hash_opintype, TypeCacheEntry::hash_proc, TypeCacheEntry::hash_proc_finfo, hash_search(), HASHEXTENDED_PROC, HASHSTANDARD_PROC, HeapTupleIsValid, HTEqualStrategyNumber, in_progress_list, in_progress_list_len, in_progress_list_maxlen, INJECTION_POINT, insert_rel_type_cache_if_needed(), InvalidOid, load_domaintype_info(), load_multirangetype_info(), load_rangetype_info(), load_typcache_tupdesc(), lookup_type_cache(), TypeCacheEntry::lt_opr, MemoryContextAlloc(), MemSet, multirange_element_has_extended_hashing(), multirange_element_has_hashing(), NameStr, TypeCacheEntry::nextDomain, ObjectIdGetDatum(), OidIsValid, range_element_has_extended_hashing(), range_element_has_hashing(), record_fields_have_compare(), record_fields_have_equality(), record_fields_have_extended_hashing(), record_fields_have_hashing(), ReleaseSysCache(), RelIdToTypeIdCacheHash, repalloc(), TypeCacheEntry::rngelemtype, TypeCacheEntry::rngtype, SearchSysCache1(), TCFLAGS_CHECKED_BTREE_OPCLASS, TCFLAGS_CHECKED_CMP_PROC, TCFLAGS_CHECKED_DOMAIN_CONSTRAINTS, TCFLAGS_CHECKED_EQ_OPR, TCFLAGS_CHECKED_GT_OPR, TCFLAGS_CHECKED_HASH_EXTENDED_PROC, TCFLAGS_CHECKED_HASH_OPCLASS, TCFLAGS_CHECKED_HASH_PROC, TCFLAGS_CHECKED_LT_OPR, TCFLAGS_HAVE_PG_TYPE_DATA, TypeCacheEntry::tupDesc, TypeCacheEntry::typalign, TypeCacheEntry::typbyval, TypeCacheEntry::typcollation, type_cache_syshash(), TypeCacheEntry::type_id, TypeCacheEntry::type_id_hash, TYPECACHE_BTREE_OPFAMILY, TYPECACHE_CMP_PROC, TYPECACHE_CMP_PROC_FINFO, TYPECACHE_DOMAIN_BASE_INFO, TYPECACHE_DOMAIN_CONSTR_INFO, TYPECACHE_EQ_OPR, TYPECACHE_EQ_OPR_FINFO, TYPECACHE_GT_OPR, TYPECACHE_HASH_EXTENDED_PROC, TYPECACHE_HASH_EXTENDED_PROC_FINFO, TYPECACHE_HASH_OPFAMILY, TYPECACHE_HASH_PROC, TYPECACHE_HASH_PROC_FINFO, TYPECACHE_LT_OPR, TYPECACHE_MULTIRANGE_INFO, TYPECACHE_RANGE_INFO, TYPECACHE_TUPDESC, TypeCacheConstrCallback(), TypeCacheHash, TypeCacheOpcCallback(), TypeCacheRelCallback(), TypeCacheTypCallback(), TypeCacheEntry::typelem, TypeCacheEntry::typlen, TypeCacheEntry::typrelid, TypeCacheEntry::typstorage, TypeCacheEntry::typsubscript, and TypeCacheEntry::typtype.

Referenced by analyzeCTE(), appendOrderBySuffix(), array_cmp(), array_contain_compare(), array_eq(), array_position_common(), array_positions(), array_replace_internal(), array_reverse(), array_sample(), array_shuffle(), array_typanalyze(), assign_record_type_identifier(), brin_bloom_opcinfo(), brin_inclusion_opcinfo(), brin_minmax_multi_opcinfo(), brin_minmax_opcinfo(), build_datatype(), build_mss(), cache_array_element_properties(), cache_multirange_element_properties(), cache_range_element_properties(), cache_record_field_properties(), calc_arraycontsel(), check_exclusion_or_unique_constraint(), check_memoizable(), contain_leaked_vars_walker(), CreateStatistics(), dependency_degree(), domain_state_setup(), DomainHasConstraints(), enum_cmp_internal(), ExecInitExprRec(), find_simplified_clause(), foreign_expr_walker(), get_attr_stat_type(), get_cached_rowtype(), get_elem_stat_type(), get_multirange_io_data(), get_range_io_data(), get_rule_orderby(), get_sort_group_operators(), GinBufferInit(), hash_array(), hash_array_extended(), hash_multirange(), hash_multirange_extended(), hash_range(), hash_range_extended(), hash_record(), hash_record_extended(), InitDomainConstraintRef(), initGinState(), IsIndexUsableForReplicaIdentityFull(), load_multirangetype_info(), load_rangetype_info(), lookup_rowtype_tupdesc_domain(), lookup_rowtype_tupdesc_internal(), lookup_type_cache(), make_expanded_record_from_tupdesc(), make_expanded_record_from_typeid(), multirange_get_typcache(), multirange_unnest(), ndistinct_for_combination(), op_hashjoinable(), op_mergejoinable(), paraminfo_get_equal_hashops(), PLy_input_setup_func(), PLy_output_setup_func(), range_get_typcache(), record_cmp(), record_eq(), revalidate_rectypeid(), scalararraysel(), scalararraysel_containment(), show_sortorder_options(), statext_mcv_serialize(), tuples_equal(), tuplesort_begin_index_gin(), and width_bucket_array().

◆ SharedRecordTypmodRegistryAttach()

void SharedRecordTypmodRegistryAttach ( SharedRecordTypmodRegistry registry)

Definition at line 2294 of file typcache.c.

2295{
2296 MemoryContext old_context;
2297 dshash_table *record_table;
2298 dshash_table *typmod_table;
2299
2301
2302 /* We can't already be attached to a shared registry. */
2303 Assert(CurrentSession != NULL);
2304 Assert(CurrentSession->segment != NULL);
2305 Assert(CurrentSession->area != NULL);
2309
2310 /*
2311 * We can't already have typmods in our local cache, because they'd clash
2312 * with those imported by SharedRecordTypmodRegistryInit. This should be
2313 * a freshly started parallel worker. If we ever support worker
2314 * recycling, a worker would need to zap its local cache in between
2315 * servicing different queries, in order to be able to call this and
2316 * synchronize typmods with a new leader; but that's problematic because
2317 * we can't be very sure that record-typmod-related state hasn't escaped
2318 * to anywhere else in the process.
2319 */
2321
2323
2324 /* Attach to the two hash tables. */
2325 record_table = dshash_attach(CurrentSession->area,
2327 registry->record_table_handle,
2329 typmod_table = dshash_attach(CurrentSession->area,
2331 registry->typmod_table_handle,
2332 NULL);
2333
2334 MemoryContextSwitchTo(old_context);
2335
2336 /*
2337 * Set up detach hook to run at worker exit. Currently this is the same
2338 * as the leader's detach hook, but in future they might need to be
2339 * different.
2340 */
2343 PointerGetDatum(registry));
2344
2345 /*
2346 * Set up the session state that will tell assign_record_type_typmod and
2347 * lookup_rowtype_tupdesc_internal about the shared registry.
2348 */
2350 CurrentSession->shared_record_table = record_table;
2351 CurrentSession->shared_typmod_table = typmod_table;
2352}
dshash_table * dshash_attach(dsa_area *area, const dshash_parameters *params, dshash_table_handle handle, void *arg)
Definition: dshash.c:270
void on_dsm_detach(dsm_segment *seg, on_dsm_detach_callback function, Datum arg)
Definition: dsm.c:1132
#define IsParallelWorker()
Definition: parallel.h:60
MemoryContext TopMemoryContext
Definition: mcxt.c:149
static Datum PointerGetDatum(const void *X)
Definition: postgres.h:327
Session * CurrentSession
Definition: session.c:48
dsm_segment * segment
Definition: session.h:27
dshash_table * shared_record_table
Definition: session.h:32
struct SharedRecordTypmodRegistry * shared_typmod_registry
Definition: session.h:31
dsa_area * area
Definition: session.h:28
dshash_table * shared_typmod_table
Definition: session.h:33
dshash_table_handle typmod_table_handle
Definition: typcache.c:186
dshash_table_handle record_table_handle
Definition: typcache.c:184
static const dshash_parameters srtr_typmod_table_params
Definition: typcache.c:285
static void shared_record_typmod_registry_detach(dsm_segment *segment, Datum datum)
Definition: typcache.c:3041
static const dshash_parameters srtr_record_table_params
Definition: typcache.c:275

References Session::area, Assert(), CurrentSession, dshash_attach(), IsParallelWorker, MemoryContextSwitchTo(), NextRecordTypmod, on_dsm_detach(), PointerGetDatum(), SharedRecordTypmodRegistry::record_table_handle, Session::segment, Session::shared_record_table, shared_record_typmod_registry_detach(), Session::shared_typmod_registry, Session::shared_typmod_table, srtr_record_table_params, srtr_typmod_table_params, TopMemoryContext, and SharedRecordTypmodRegistry::typmod_table_handle.

Referenced by AttachSession().

◆ SharedRecordTypmodRegistryEstimate()

size_t SharedRecordTypmodRegistryEstimate ( void  )

Definition at line 2173 of file typcache.c.

2174{
2175 return sizeof(SharedRecordTypmodRegistry);
2176}
struct SharedRecordTypmodRegistry SharedRecordTypmodRegistry
Definition: typcache.h:176

Referenced by GetSessionDsmHandle().

◆ SharedRecordTypmodRegistryInit()

void SharedRecordTypmodRegistryInit ( SharedRecordTypmodRegistry registry,
dsm_segment segment,
dsa_area area 
)

Definition at line 2195 of file typcache.c.

2198{
2199 MemoryContext old_context;
2200 dshash_table *record_table;
2201 dshash_table *typmod_table;
2202 int32 typmod;
2203
2205
2206 /* We can't already be attached to a shared registry. */
2210
2212
2213 /* Create the hash table of tuple descriptors indexed by themselves. */
2214 record_table = dshash_create(area, &srtr_record_table_params, area);
2215
2216 /* Create the hash table of tuple descriptors indexed by typmod. */
2217 typmod_table = dshash_create(area, &srtr_typmod_table_params, NULL);
2218
2219 MemoryContextSwitchTo(old_context);
2220
2221 /* Initialize the SharedRecordTypmodRegistry. */
2222 registry->record_table_handle = dshash_get_hash_table_handle(record_table);
2223 registry->typmod_table_handle = dshash_get_hash_table_handle(typmod_table);
2225
2226 /*
2227 * Copy all entries from this backend's private registry into the shared
2228 * registry.
2229 */
2230 for (typmod = 0; typmod < NextRecordTypmod; ++typmod)
2231 {
2232 SharedTypmodTableEntry *typmod_table_entry;
2233 SharedRecordTableEntry *record_table_entry;
2234 SharedRecordTableKey record_table_key;
2235 dsa_pointer shared_dp;
2236 TupleDesc tupdesc;
2237 bool found;
2238
2239 tupdesc = RecordCacheArray[typmod].tupdesc;
2240 if (tupdesc == NULL)
2241 continue;
2242
2243 /* Copy the TupleDesc into shared memory. */
2244 shared_dp = share_tupledesc(area, tupdesc, typmod);
2245
2246 /* Insert into the typmod table. */
2247 typmod_table_entry = dshash_find_or_insert(typmod_table,
2248 &tupdesc->tdtypmod,
2249 &found);
2250 if (found)
2251 elog(ERROR, "cannot create duplicate shared record typmod");
2252 typmod_table_entry->typmod = tupdesc->tdtypmod;
2253 typmod_table_entry->shared_tupdesc = shared_dp;
2254 dshash_release_lock(typmod_table, typmod_table_entry);
2255
2256 /* Insert into the record table. */
2257 record_table_key.shared = false;
2258 record_table_key.u.local_tupdesc = tupdesc;
2259 record_table_entry = dshash_find_or_insert(record_table,
2260 &record_table_key,
2261 &found);
2262 if (!found)
2263 {
2264 record_table_entry->key.shared = true;
2265 record_table_entry->key.u.shared_tupdesc = shared_dp;
2266 }
2267 dshash_release_lock(record_table, record_table_entry);
2268 }
2269
2270 /*
2271 * Set up the global state that will tell assign_record_type_typmod and
2272 * lookup_rowtype_tupdesc_internal about the shared registry.
2273 */
2274 CurrentSession->shared_record_table = record_table;
2275 CurrentSession->shared_typmod_table = typmod_table;
2277
2278 /*
2279 * We install a detach hook in the leader, but only to handle cleanup on
2280 * failure during GetSessionDsmHandle(). Once GetSessionDsmHandle() pins
2281 * the memory, the leader process will use a shared registry until it
2282 * exits.
2283 */
2285}
static void pg_atomic_init_u32(volatile pg_atomic_uint32 *ptr, uint32 val)
Definition: atomics.h:221
int32_t int32
Definition: c.h:498
uint64 dsa_pointer
Definition: dsa.h:62
void dshash_release_lock(dshash_table *hash_table, void *entry)
Definition: dshash.c:558
dshash_table_handle dshash_get_hash_table_handle(dshash_table *hash_table)
Definition: dshash.c:367
void * dshash_find_or_insert(dshash_table *hash_table, const void *key, bool *found)
Definition: dshash.c:433
dshash_table * dshash_create(dsa_area *area, const dshash_parameters *params, void *arg)
Definition: dshash.c:206
SharedRecordTableKey key
Definition: typcache.c:213
TupleDesc local_tupdesc
Definition: typcache.c:201
dsa_pointer shared_tupdesc
Definition: typcache.c:202
union SharedRecordTableKey::@31 u
pg_atomic_uint32 next_typmod
Definition: typcache.c:188
dsa_pointer shared_tupdesc
Definition: typcache.c:223
static dsa_pointer share_tupledesc(dsa_area *area, TupleDesc tupdesc, uint32 typmod)
Definition: typcache.c:2908

References Assert(), CurrentSession, dshash_create(), dshash_find_or_insert(), dshash_get_hash_table_handle(), dshash_release_lock(), elog, ERROR, IsParallelWorker, SharedRecordTableEntry::key, SharedRecordTableKey::local_tupdesc, MemoryContextSwitchTo(), SharedRecordTypmodRegistry::next_typmod, NextRecordTypmod, on_dsm_detach(), pg_atomic_init_u32(), SharedRecordTypmodRegistry::record_table_handle, RecordCacheArray, share_tupledesc(), SharedRecordTableKey::shared, Session::shared_record_table, shared_record_typmod_registry_detach(), SharedRecordTableKey::shared_tupdesc, SharedTypmodTableEntry::shared_tupdesc, Session::shared_typmod_registry, Session::shared_typmod_table, srtr_record_table_params, srtr_typmod_table_params, TupleDescData::tdtypmod, TopMemoryContext, RecordCacheArrayEntry::tupdesc, SharedTypmodTableEntry::typmod, SharedRecordTypmodRegistry::typmod_table_handle, and SharedRecordTableKey::u.

Referenced by GetSessionDsmHandle().

◆ UpdateDomainConstraintRef()

void UpdateDomainConstraintRef ( DomainConstraintRef ref)

Definition at line 1438 of file typcache.c.

1439{
1440 TypeCacheEntry *typentry = ref->tcache;
1441
1442 /* Make sure typcache entry's data is up to date */
1443 if ((typentry->flags & TCFLAGS_CHECKED_DOMAIN_CONSTRAINTS) == 0 &&
1444 typentry->typtype == TYPTYPE_DOMAIN)
1445 load_domaintype_info(typentry);
1446
1447 /* Transfer to ref object if there's new info, adjusting refcounts */
1448 if (ref->dcc != typentry->domainData)
1449 {
1450 /* Paranoia --- be sure link is nulled before trying to release */
1451 DomainConstraintCache *dcc = ref->dcc;
1452
1453 if (dcc)
1454 {
1455 /*
1456 * Note: we just leak the previous list of executable domain
1457 * constraints. Alternatively, we could keep those in a child
1458 * context of ref->refctx and free that context at this point.
1459 * However, in practice this code path will be taken so seldom
1460 * that the extra bookkeeping for a child context doesn't seem
1461 * worthwhile; we'll just allow a leak for the lifespan of refctx.
1462 */
1463 ref->constraints = NIL;
1464 ref->dcc = NULL;
1465 decr_dcc_refcount(dcc);
1466 }
1467 dcc = typentry->domainData;
1468 if (dcc)
1469 {
1470 ref->dcc = dcc;
1471 dcc->dccRefCount++;
1472 if (ref->need_exprstate)
1474 ref->refctx);
1475 else
1476 ref->constraints = dcc->constraints;
1477 }
1478 }
1479}
static void decr_dcc_refcount(DomainConstraintCache *dcc)
Definition: typcache.c:1330

References DomainConstraintCache::constraints, DomainConstraintRef::constraints, DomainConstraintRef::dcc, DomainConstraintCache::dccRefCount, decr_dcc_refcount(), TypeCacheEntry::domainData, TypeCacheEntry::flags, load_domaintype_info(), DomainConstraintRef::need_exprstate, NIL, prep_domain_constraints(), DomainConstraintRef::refctx, DomainConstraintRef::tcache, TCFLAGS_CHECKED_DOMAIN_CONSTRAINTS, and TypeCacheEntry::typtype.

Referenced by domain_check_input().