diff --git a/doc/src/sgml/catalogs.sgml b/doc/src/sgml/catalogs.sgml
index fc81133f07..1714fd6b08 100644
--- a/doc/src/sgml/catalogs.sgml
+++ b/doc/src/sgml/catalogs.sgml
@@ -8228,6 +8228,11 @@ SCRAM-SHA-256$<iteration count>:&l
time zone names
+
+ pg_ts_shared_dictionaries
+ dictionaries currently in shared memory
+
+
pg_userdatabase users
@@ -10983,6 +10988,63 @@ SELECT * FROM pg_locks pl LEFT JOIN pg_prepared_xacts ppx
+
+ <structname>pg_ts_shared_dictionaries</structname>
+
+
+ pg_ts_shared_dictionaries
+
+
+
+ The pg_ts_shared_dictionaries view provides a
+ listing of all text search dictionaries that currently allocated in the
+ shared memory. The size of available space in shared memory is controlled by
+ . A dictionary may have an option which
+ controls allocation in shared memory (see ).
+
+
+
+ <structname>pg_ts_shared_dictionaries</structname> Columns
+
+
+
+
+ Name
+ Type
+ References
+ Description
+
+
+
+
+ dictoid
+ oid
+ pg_ts_dict.oid
+ The OID of the text search dictionary located in shared memory
+
+
+ schemaname
+ name
+ pg_namespace.nspname
+ The name of schema containing the text search dictionary
+
+
+ dictname
+ name
+ pg_ts_dict.dictname
+ The text search dictionary name
+
+
+ size
+ bigint
+
+ Size of the text search dictionary in bytes
+
+
+
+
+
+
<structname>pg_user</structname>
diff --git a/doc/src/sgml/textsearch.sgml b/doc/src/sgml/textsearch.sgml
index f3288fbb3f..02e8e8aa90 100644
--- a/doc/src/sgml/textsearch.sgml
+++ b/doc/src/sgml/textsearch.sgml
@@ -3047,6 +3047,12 @@ CREATE TEXT SEARCH DICTIONARY english_stem (
parameter to a value greater than zero or to a value -1.
+
+ List of dictionaries currently located in shared memory can be retreived by
+ pg_ts_shared_dictionaries
+ view.
+
+
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index 5e6e8a64f6..ab7ee973d9 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -506,6 +506,9 @@ CREATE VIEW pg_config AS
REVOKE ALL on pg_config FROM PUBLIC;
REVOKE EXECUTE ON FUNCTION pg_config() FROM PUBLIC;
+CREATE VIEW pg_ts_shared_dictionaries AS
+ SELECT * FROM pg_ts_shared_dictionaries();
+
-- Statistics views
CREATE VIEW pg_stat_all_tables AS
diff --git a/src/backend/tsearch/ts_shared.c b/src/backend/tsearch/ts_shared.c
index 2a8b80bce8..fe632ecf6f 100644
--- a/src/backend/tsearch/ts_shared.c
+++ b/src/backend/tsearch/ts_shared.c
@@ -13,11 +13,18 @@
*/
#include "postgres.h"
+#include "funcapi.h"
+#include "miscadmin.h"
+
+#include "access/htup_details.h"
+#include "catalog/pg_ts_dict.h"
#include "lib/dshash.h"
#include "storage/lwlock.h"
#include "storage/shmem.h"
#include "tsearch/ts_shared.h"
+#include "utils/builtins.h"
#include "utils/hashutils.h"
+#include "utils/lsyscache.h"
#include "utils/memutils.h"
@@ -377,3 +384,100 @@ recheck_table:
MemoryContextSwitchTo(old_context);
}
+
+/*
+ * pg_ts_shared_dictionaries - SQL SRF showing dictionaries currently in
+ * shared memory.
+ */
+Datum
+pg_ts_shared_dictionaries(PG_FUNCTION_ARGS)
+{
+ ReturnSetInfo *rsinfo = (ReturnSetInfo *) fcinfo->resultinfo;
+ MemoryContext oldcontext;
+ TupleDesc tupdesc;
+ Tuplestorestate *tupstore;
+ Relation rel;
+ HeapTuple tuple;
+ SysScanDesc scan;
+
+ /* check to see if caller supports us returning a tuplestore */
+ if (rsinfo == NULL || !IsA(rsinfo, ReturnSetInfo))
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("set-valued function called in context that cannot accept a set")));
+ if (!(rsinfo->allowedModes & SFRM_Materialize))
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("materialize mode required, but it is not " \
+ "allowed in this context")));
+
+ /* Build a tuple descriptor for our result type */
+ if (get_call_result_type(fcinfo, NULL, &tupdesc) != TYPEFUNC_COMPOSITE)
+ elog(ERROR, "return type must be a row type");
+
+ /* Build tuplestore to hold the result rows */
+ oldcontext = MemoryContextSwitchTo(rsinfo->econtext->ecxt_per_query_memory);
+
+ tupstore = tuplestore_begin_heap(true, false, work_mem);
+ rsinfo->returnMode = SFRM_Materialize;
+ rsinfo->setResult = tupstore;
+ rsinfo->setDesc = tupdesc;
+
+ MemoryContextSwitchTo(oldcontext);
+
+ init_dict_table();
+
+ /*
+ * If a hash table wasn't created return zero records.
+ */
+ if (!DsaPointerIsValid(tsearch_ctl->dict_table_handle))
+ {
+ tuplestore_donestoring(tupstore);
+
+ PG_RETURN_VOID();
+ }
+
+ /* Start to scan pg_ts_dict */
+ rel = heap_open(TSDictionaryRelationId, AccessShareLock);
+ scan = systable_beginscan(rel, InvalidOid, false, NULL, 0, NULL);
+
+ while (HeapTupleIsValid(tuple = systable_getnext(scan)))
+ {
+ Datum values[4];
+ bool nulls[4];
+ Form_pg_ts_dict dict = (Form_pg_ts_dict) GETSTRUCT(tuple);
+ Oid dictid = HeapTupleGetOid(tuple);
+ TsearchDictEntry *entry;
+ NameData dict_name;
+
+ /* If dictionary isn't located in shared memory try following */
+ entry = (TsearchDictEntry *) dshash_find(dict_table, &dictid, false);
+ if (!entry)
+ continue;
+
+ namecpy(&dict_name, &dict->dictname);
+
+ memset(nulls, 0, sizeof(nulls));
+
+ values[0] = ObjectIdGetDatum(dictid);
+
+ if (OidIsValid(dict->dictnamespace))
+ values[1] = CStringGetDatum(get_namespace_name(dict->dictnamespace));
+ else
+ nulls[1] = true;
+
+ values[2] = NameGetDatum(&dict_name);
+ values[3] = Int64GetDatum(entry->dict_size);
+
+ dshash_release_lock(dict_table, entry);
+
+ tuplestore_putvalues(tupstore, tupdesc, values, nulls);
+ }
+
+ systable_endscan(scan);
+ heap_close(rel, AccessShareLock);
+
+ tuplestore_donestoring(tupstore);
+
+ PG_RETURN_VOID();
+}
diff --git a/src/include/catalog/pg_proc.h b/src/include/catalog/pg_proc.h
index bfc90098f8..6cd60f7110 100644
--- a/src/include/catalog/pg_proc.h
+++ b/src/include/catalog/pg_proc.h
@@ -4975,6 +4975,9 @@ DESCR("trigger for automatic update of tsvector column");
DATA(insert OID = 3759 ( get_current_ts_config PGNSP PGUID 12 1 0 0 0 f f f t f s s 0 0 3734 "" _null_ _null_ _null_ _null_ _null_ get_current_ts_config _null_ _null_ _null_ ));
DESCR("get current tsearch configuration");
+DATA(insert OID = 4213 ( pg_ts_shared_dictionaries PGNSP PGUID 12 1 10 0 0 f f f f t s s 0 0 2249 "" "{26,19,19,20}" "{o,o,o,o}" "{dictoid,schemaname,dictname,size}" _null_ _null_ pg_ts_shared_dictionaries _null_ _null_ _null_ ));
+DESCR("information about text search dictionaries currently in shared memory");
+
DATA(insert OID = 3736 ( regconfigin PGNSP PGUID 12 1 0 0 0 f f f t f s s 1 0 3734 "2275" _null_ _null_ _null_ _null_ _null_ regconfigin _null_ _null_ _null_ ));
DESCR("I/O");
DATA(insert OID = 3737 ( regconfigout PGNSP PGUID 12 1 0 0 0 f f f t f s s 1 0 2275 "3734" _null_ _null_ _null_ _null_ _null_ regconfigout _null_ _null_ _null_ ));
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 5149b72fe9..7e61b46419 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -2211,6 +2211,11 @@ pg_timezone_names| SELECT pg_timezone_names.name,
pg_timezone_names.utc_offset,
pg_timezone_names.is_dst
FROM pg_timezone_names() pg_timezone_names(name, abbrev, utc_offset, is_dst);
+pg_ts_shared_dictionaries| SELECT pg_ts_shared_dictionaries.dictoid,
+ pg_ts_shared_dictionaries.schemaname,
+ pg_ts_shared_dictionaries.dictname,
+ pg_ts_shared_dictionaries.size
+ FROM pg_ts_shared_dictionaries() pg_ts_shared_dictionaries(dictoid, schemaname, dictname, size);
pg_user| SELECT pg_shadow.usename,
pg_shadow.usesysid,
pg_shadow.usecreatedb,