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Mark pg_stat_reset_shared as strict 

This is the proper fix for bug #6082 about
pg_stat_reset_shared(NULL) causing a crash, and it reverts
commit 79aa44536f on head.

The workaround of throwing an error from inside the function is
left on backbranches (including 9.1) since this change requires
a new initdb.
This commit is contained in:
Magnus Hagander 2011-07-03 13:15:58 +02:00
parent 426cafc46c
commit 24e2d4b6ba
3 changed files with 4 additions and 12 deletions
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12
src/backend/utils/adt/pgstatfuncs.c
View File

@ -1537,17 +1537,9 @@ pg_stat_reset(PG_FUNCTION_ARGS)
Datum
pg_stat_reset_shared(PG_FUNCTION_ARGS)
{
if (PG_ARGISNULL(0))
/*
* Same error message as in pgstat_reset_shared_counters(),
* to keep translations the same.
*/
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("unrecognized reset target: \"%s\"", "null"),
errhint("Target must be \"bgwriter\".")));
char *target = text_to_cstring(PG_GETARG_TEXT_PP(0));
pgstat_reset_shared_counters(text_to_cstring(PG_GETARG_TEXT_PP(0)));
pgstat_reset_shared_counters(target);
PG_RETURN_VOID();
}

2
src/include/catalog/catversion.h
View File

@ -53,6 +53,6 @@
*/
/* yyyymmddN */
#define CATALOG_VERSION_NO 201106211
#define CATALOG_VERSION_NO 201107031
#endif

2
src/include/catalog/pg_proc.h
View File

@ -2663,7 +2663,7 @@ DATA(insert OID = 2230 ( pg_stat_clear_snapshot PGNSP PGUID 12 1 0 0 0 f f f f
DESCR("statistics: discard current transaction's statistics snapshot");
DATA(insert OID = 2274 ( pg_stat_reset PGNSP PGUID 12 1 0 0 0 f f f f f v 0 0 2278 "" _null_ _null_ _null_ _null_ pg_stat_reset _null_ _null_ _null_ ));
DESCR("statistics: reset collected statistics for current database");
DATA(insert OID = 3775 ( pg_stat_reset_shared PGNSP PGUID 12 1 0 0 0 f f f f f v 1 0 2278 "25" _null_ _null_ _null_ _null_ pg_stat_reset_shared _null_ _null_ _null_ ));
DATA(insert OID = 3775 ( pg_stat_reset_shared PGNSP PGUID 12 1 0 0 0 f f f t f v 1 0 2278 "25" _null_ _null_ _null_ _null_ pg_stat_reset_shared _null_ _null_ _null_ ));
DESCR("statistics: reset collected statistics shared across the cluster");
DATA(insert OID = 3776 ( pg_stat_reset_single_table_counters PGNSP PGUID 12 1 0 0 0 f f f f f v 1 0 2278 "26" _null_ _null_ _null_ _null_ pg_stat_reset_single_table_counters _null_ _null_ _null_ ));
DESCR("statistics: reset collected statistics for a single table or index in the current database");