database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-13 07:41:39 +03:00
Code Activity

Add start time to pg_stat_activity

Browse Source 
Neil Conway
This commit is contained in:
Bruce Momjian
2003-03-20 03:34:57 +00:00
parent ddd50a0bab
commit a18331004a
20 changed files with 208 additions and 91 deletions
Download Patch File Download Diff File Expand all files Collapse all files

46
src/backend/utils/adt/pgstatfuncs.c
View File

@ -25,6 +25,7 @@ extern Datum pg_stat_get_backend_pid(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_backend_dbid(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_backend_userid(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_backend_activity(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_backend_activity_start(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_db_numbackends(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_db_xact_commit(PG_FUNCTION_ARGS);
@ -221,7 +222,6 @@ pg_backend_pid(PG_FUNCTION_ARGS)
/*
* Built-in function for resetting the counters
*
*/
Datum
pg_stat_reset(PG_FUNCTION_ARGS)
@ -301,6 +301,50 @@ pg_stat_get_backend_activity(PG_FUNCTION_ARGS)
}
Datum
pg_stat_get_backend_activity_start(PG_FUNCTION_ARGS)
{
PgStat_StatBeEntry *beentry;
int32 beid;
AbsoluteTime sec;
int usec;
Timestamp result;
beid = PG_GETARG_INT32(0);
if (!superuser())
PG_RETURN_NULL();
if ((beentry = pgstat_fetch_stat_beentry(beid)) == NULL)
PG_RETURN_NULL();
sec = beentry->activity_start_sec;
usec = beentry->activity_start_usec;
/*
* No time recorded for start of current query -- this is the case
* if the user hasn't enabled query-level stats collection.
*/
if (sec == 0 && usec == 0)
PG_RETURN_NULL();
/*
* This method of converting "Unix time" (sec/usec since epoch) to a
* PostgreSQL timestamp is an ugly hack -- if you fix it, be sure to
* fix the similar hackery in timestamp.c
*/
#ifdef HAVE_INT64_TIMESTAMP
result = (((sec - ((date2j(2000, 1, 1) - date2j(1970, 1, 1)) * 86400))
* INT64CONST(1000000)) + usec);
#else
result = (sec + (usec * 1.0e-6) - ((date2j(2000, 1, 1) -
date2j(1970, 1, 1)) * 86400));
#endif
PG_RETURN_TIMESTAMP(result);
}
Datum
pg_stat_get_db_numbackends(PG_FUNCTION_ARGS)
{