From 61cb8c5abb9235c3106af6c6a6e60d94cb1eee80 Mon Sep 17 00:00:00 2001 From: Magnus Hagander Date: Thu, 26 Jan 2012 15:58:19 +0100 Subject: Add deadlock counter to pg_stat_database Adds a counter that tracks number of deadlocks that occurred in each database to pg_stat_database. Magnus Hagander, reviewed by Jaime Casanova --- src/backend/utils/adt/pgstatfuncs.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'src/backend/utils/adt/pgstatfuncs.c') diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c index c7b91a8c825..68b25274e38 100644 --- a/src/backend/utils/adt/pgstatfuncs.c +++ b/src/backend/utils/adt/pgstatfuncs.c @@ -78,6 +78,7 @@ extern Datum pg_stat_get_db_conflict_snapshot(PG_FUNCTION_ARGS); extern Datum pg_stat_get_db_conflict_bufferpin(PG_FUNCTION_ARGS); extern Datum pg_stat_get_db_conflict_startup_deadlock(PG_FUNCTION_ARGS); extern Datum pg_stat_get_db_conflict_all(PG_FUNCTION_ARGS); +extern Datum pg_stat_get_db_deadlocks(PG_FUNCTION_ARGS); extern Datum pg_stat_get_db_stat_reset_time(PG_FUNCTION_ARGS); extern Datum pg_stat_get_db_temp_files(PG_FUNCTION_ARGS); extern Datum pg_stat_get_db_temp_bytes(PG_FUNCTION_ARGS); @@ -1341,6 +1342,21 @@ pg_stat_get_db_conflict_all(PG_FUNCTION_ARGS) PG_RETURN_INT64(result); } +Datum +pg_stat_get_db_deadlocks(PG_FUNCTION_ARGS) +{ + Oid dbid = PG_GETARG_OID(0); + int64 result; + PgStat_StatDBEntry *dbentry; + + if ((dbentry = pgstat_fetch_stat_dbentry(dbid)) == NULL) + result = 0; + else + result = (int64) (dbentry->n_deadlocks); + + PG_RETURN_INT64(result); +} + Datum pg_stat_get_bgwriter_timed_checkpoints(PG_FUNCTION_ARGS) { -- cgit v1.2.3