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Add support for tracking call counts and elapsed runtime for user-defined

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functions.

Note that because this patch changes FmgrInfo, any external C functions
you might be testing with 8.4 will need to be recompiled.

Patch by Martin Pihlak, some editorialization by me (principally, removing
tracking of getrusage() numbers)
This commit is contained in:
Tom Lane
2008-05-15 00:17:41 +00:00
parent 3bc25384d7
commit 93c701edc6
20 changed files with 830 additions and 67 deletions
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41
src/backend/utils/adt/pgstatfuncs.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/pgstatfuncs.c,v 1.51 2008/05/12 00:00:51 alvherre Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/pgstatfuncs.c,v 1.52 2008/05/15 00:17:40 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -39,6 +39,10 @@ extern Datum pg_stat_get_last_autovacuum_time(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_last_analyze_time(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_last_autoanalyze_time(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_function_calls(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_function_time(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_function_self_time(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_backend_idset(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_activity(PG_FUNCTION_ARGS);
extern Datum pg_backend_pid(PG_FUNCTION_ARGS);
@ -325,6 +329,39 @@ pg_stat_get_last_autoanalyze_time(PG_FUNCTION_ARGS)
PG_RETURN_TIMESTAMPTZ(result);
}
Datum
pg_stat_get_function_calls(PG_FUNCTION_ARGS)
{
Oid funcid = PG_GETARG_OID(0);
PgStat_StatFuncEntry *funcentry;
if ((funcentry = pgstat_fetch_stat_funcentry(funcid)) == NULL)
PG_RETURN_NULL();
PG_RETURN_INT64(funcentry->f_numcalls);
}
Datum
pg_stat_get_function_time(PG_FUNCTION_ARGS)
{
Oid funcid = PG_GETARG_OID(0);
PgStat_StatFuncEntry *funcentry;
if ((funcentry = pgstat_fetch_stat_funcentry(funcid)) == NULL)
PG_RETURN_NULL();
PG_RETURN_INT64(funcentry->f_time);
}
Datum
pg_stat_get_function_self_time(PG_FUNCTION_ARGS)
{
Oid funcid = PG_GETARG_OID(0);
PgStat_StatFuncEntry *funcentry;
if ((funcentry = pgstat_fetch_stat_funcentry(funcid)) == NULL)
PG_RETURN_NULL();
PG_RETURN_INT64(funcentry->f_time_self);
}
Datum
pg_stat_get_backend_idset(PG_FUNCTION_ARGS)
{
@ -401,7 +438,7 @@ pg_stat_get_activity(PG_FUNCTION_ARGS)
}
else
{
/*
/*
* Get one backend - locate by pid.
*
* We lookup the backend early, so we can return zero rows if it doesn't