From 7e40cdc07585d5f93dd1f35ce1d402eba55e425b Mon Sep 17 00:00:00 2001
From: Magnus Hagander <magnus@hagander.net>
Date: Tue, 19 Jan 2010 14:11:32 +0000
Subject: Add pg_stat_reset_shared('bgwriter') to reset the cluster-wide shared
 statistics of the bgwriter.

Greg Smith
---
 src/backend/utils/adt/pgstatfuncs.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

(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 16fa10f2cd9..06dfd3bc93b 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/adt/pgstatfuncs.c,v 1.57 2010/01/02 16:57:54 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/adt/pgstatfuncs.c,v 1.58 2010/01/19 14:11:31 mha Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -78,6 +78,7 @@ extern Datum pg_stat_get_buf_alloc(PG_FUNCTION_ARGS);
 
 extern Datum pg_stat_clear_snapshot(PG_FUNCTION_ARGS);
 extern Datum pg_stat_reset(PG_FUNCTION_ARGS);
+extern Datum pg_stat_reset_shared(PG_FUNCTION_ARGS);
 
 /* Global bgwriter statistics, from bgwriter.c */
 extern PgStat_MsgBgWriter bgwriterStats;
@@ -1108,3 +1109,14 @@ pg_stat_reset(PG_FUNCTION_ARGS)
 
 	PG_RETURN_VOID();
 }
+
+/* Reset some shared cluster-wide counters */
+Datum
+pg_stat_reset_shared(PG_FUNCTION_ARGS)
+{
+	char	*target = text_to_cstring(PG_GETARG_TEXT_PP(0));
+
+	pgstat_reset_shared_counters(target);
+
+	PG_RETURN_VOID();
+}
-- 
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