mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-28 00:37:20 +02:00
378 lines
7.4 KiB
C
378 lines
7.4 KiB
C
#include "postgres.h"
|
|
|
|
#include "fmgr.h"
|
|
#include "miscadmin.h"
|
|
#include "utils/hsearch.h"
|
|
#include "access/xact.h"
|
|
#include "catalog/pg_shadow.h"
|
|
#include "nodes/execnodes.h"
|
|
|
|
#include "pgstat.h"
|
|
|
|
extern Datum pg_stat_get_numscans(PG_FUNCTION_ARGS);
|
|
extern Datum pg_stat_get_tuples_returned(PG_FUNCTION_ARGS);
|
|
extern Datum pg_stat_get_tuples_fetched(PG_FUNCTION_ARGS);
|
|
extern Datum pg_stat_get_tuples_inserted(PG_FUNCTION_ARGS);
|
|
extern Datum pg_stat_get_tuples_updated(PG_FUNCTION_ARGS);
|
|
extern Datum pg_stat_get_tuples_deleted(PG_FUNCTION_ARGS);
|
|
extern Datum pg_stat_get_blocks_fetched(PG_FUNCTION_ARGS);
|
|
extern Datum pg_stat_get_blocks_hit(PG_FUNCTION_ARGS);
|
|
|
|
extern Datum pg_stat_get_backend_idset(PG_FUNCTION_ARGS);
|
|
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_db_numbackends(PG_FUNCTION_ARGS);
|
|
extern Datum pg_stat_get_db_xact_commit(PG_FUNCTION_ARGS);
|
|
extern Datum pg_stat_get_db_xact_rollback(PG_FUNCTION_ARGS);
|
|
extern Datum pg_stat_get_db_blocks_fetched(PG_FUNCTION_ARGS);
|
|
extern Datum pg_stat_get_db_blocks_hit(PG_FUNCTION_ARGS);
|
|
|
|
|
|
Datum
|
|
pg_stat_get_numscans(PG_FUNCTION_ARGS)
|
|
{
|
|
PgStat_StatTabEntry *tabentry;
|
|
Oid relid;
|
|
int64 result;
|
|
|
|
relid = PG_GETARG_OID(0);
|
|
|
|
if ((tabentry = pgstat_fetch_stat_tabentry(relid)) == NULL)
|
|
result = 0;
|
|
else
|
|
result = (int64)(tabentry->numscans);
|
|
|
|
PG_RETURN_INT64(result);
|
|
}
|
|
|
|
|
|
Datum
|
|
pg_stat_get_tuples_returned(PG_FUNCTION_ARGS)
|
|
{
|
|
PgStat_StatTabEntry *tabentry;
|
|
Oid relid;
|
|
int64 result;
|
|
|
|
relid = PG_GETARG_OID(0);
|
|
|
|
if ((tabentry = pgstat_fetch_stat_tabentry(relid)) == NULL)
|
|
result = 0;
|
|
else
|
|
result = (int64)(tabentry->tuples_returned);
|
|
|
|
PG_RETURN_INT64(result);
|
|
}
|
|
|
|
|
|
Datum
|
|
pg_stat_get_tuples_fetched(PG_FUNCTION_ARGS)
|
|
{
|
|
PgStat_StatTabEntry *tabentry;
|
|
Oid relid;
|
|
int64 result;
|
|
|
|
relid = PG_GETARG_OID(0);
|
|
|
|
if ((tabentry = pgstat_fetch_stat_tabentry(relid)) == NULL)
|
|
result = 0;
|
|
else
|
|
result = (int64)(tabentry->tuples_fetched);
|
|
|
|
PG_RETURN_INT64(result);
|
|
}
|
|
|
|
|
|
Datum
|
|
pg_stat_get_tuples_inserted(PG_FUNCTION_ARGS)
|
|
{
|
|
PgStat_StatTabEntry *tabentry;
|
|
Oid relid;
|
|
int64 result;
|
|
|
|
relid = PG_GETARG_OID(0);
|
|
|
|
if ((tabentry = pgstat_fetch_stat_tabentry(relid)) == NULL)
|
|
result = 0;
|
|
else
|
|
result = (int64)(tabentry->tuples_inserted);
|
|
|
|
PG_RETURN_INT64(result);
|
|
}
|
|
|
|
|
|
Datum
|
|
pg_stat_get_tuples_updated(PG_FUNCTION_ARGS)
|
|
{
|
|
PgStat_StatTabEntry *tabentry;
|
|
Oid relid;
|
|
int64 result;
|
|
|
|
relid = PG_GETARG_OID(0);
|
|
|
|
if ((tabentry = pgstat_fetch_stat_tabentry(relid)) == NULL)
|
|
result = 0;
|
|
else
|
|
result = (int64)(tabentry->tuples_updated);
|
|
|
|
PG_RETURN_INT64(result);
|
|
}
|
|
|
|
|
|
Datum
|
|
pg_stat_get_tuples_deleted(PG_FUNCTION_ARGS)
|
|
{
|
|
PgStat_StatTabEntry *tabentry;
|
|
Oid relid;
|
|
int64 result;
|
|
|
|
relid = PG_GETARG_OID(0);
|
|
|
|
if ((tabentry = pgstat_fetch_stat_tabentry(relid)) == NULL)
|
|
result = 0;
|
|
else
|
|
result = (int64)(tabentry->tuples_deleted);
|
|
|
|
PG_RETURN_INT64(result);
|
|
}
|
|
|
|
|
|
Datum
|
|
pg_stat_get_blocks_fetched(PG_FUNCTION_ARGS)
|
|
{
|
|
PgStat_StatTabEntry *tabentry;
|
|
Oid relid;
|
|
int64 result;
|
|
|
|
relid = PG_GETARG_OID(0);
|
|
|
|
if ((tabentry = pgstat_fetch_stat_tabentry(relid)) == NULL)
|
|
result = 0;
|
|
else
|
|
result = (int64)(tabentry->blocks_fetched);
|
|
|
|
PG_RETURN_INT64(result);
|
|
}
|
|
|
|
|
|
Datum
|
|
pg_stat_get_blocks_hit(PG_FUNCTION_ARGS)
|
|
{
|
|
PgStat_StatTabEntry *tabentry;
|
|
Oid relid;
|
|
int64 result;
|
|
|
|
relid = PG_GETARG_OID(0);
|
|
|
|
if ((tabentry = pgstat_fetch_stat_tabentry(relid)) == NULL)
|
|
result = 0;
|
|
else
|
|
result = (int64)(tabentry->blocks_hit);
|
|
|
|
PG_RETURN_INT64(result);
|
|
}
|
|
|
|
|
|
Datum
|
|
pg_stat_get_backend_idset(PG_FUNCTION_ARGS)
|
|
{
|
|
FmgrInfo *fmgr_info = fcinfo->flinfo;
|
|
MemoryContext oldcxt;
|
|
int32 result;
|
|
|
|
if (fcinfo->resultinfo == NULL)
|
|
elog(ERROR, "called in context that does not accept a set result (1)");
|
|
if (!IsA(fcinfo->resultinfo, ReturnSetInfo))
|
|
elog(ERROR, "called in context that does not accept a set result (2)");
|
|
|
|
if (fmgr_info->fn_extra == NULL)
|
|
{
|
|
if (fmgr_info->fn_mcxt == NULL)
|
|
elog(ERROR, "No function memory context in set-function");
|
|
|
|
oldcxt = MemoryContextSwitchTo(fmgr_info->fn_mcxt);
|
|
fmgr_info->fn_extra = palloc(sizeof(int32) * 2);
|
|
((int32 *)(fmgr_info->fn_extra))[0] = 0;
|
|
((int32 *)(fmgr_info->fn_extra))[1] =
|
|
(int32)pgstat_fetch_stat_numbackends();
|
|
MemoryContextSwitchTo(oldcxt);
|
|
}
|
|
|
|
((int32 *)(fmgr_info->fn_extra))[0] += 1;
|
|
result = ((int32 *)(fmgr_info->fn_extra))[0];
|
|
|
|
|
|
if (result > ((int32 *)(fmgr_info->fn_extra))[1])
|
|
{
|
|
((ReturnSetInfo *)(fcinfo->resultinfo))->isDone = ExprEndResult;
|
|
PG_RETURN_NULL();
|
|
}
|
|
|
|
((ReturnSetInfo *)(fcinfo->resultinfo))->isDone = ExprMultipleResult;
|
|
PG_RETURN_INT32(result);
|
|
}
|
|
|
|
|
|
Datum
|
|
pg_stat_get_backend_pid(PG_FUNCTION_ARGS)
|
|
{
|
|
PgStat_StatBeEntry *beentry;
|
|
int32 beid;
|
|
|
|
beid = PG_GETARG_INT32(0);
|
|
|
|
if ((beentry = pgstat_fetch_stat_beentry(beid)) == NULL)
|
|
PG_RETURN_NULL();
|
|
|
|
PG_RETURN_INT32(beentry->procpid);
|
|
}
|
|
|
|
|
|
Datum
|
|
pg_stat_get_backend_dbid(PG_FUNCTION_ARGS)
|
|
{
|
|
PgStat_StatBeEntry *beentry;
|
|
int32 beid;
|
|
|
|
beid = PG_GETARG_INT32(0);
|
|
|
|
if ((beentry = pgstat_fetch_stat_beentry(beid)) == NULL)
|
|
PG_RETURN_NULL();
|
|
|
|
PG_RETURN_OID(beentry->databaseid);
|
|
}
|
|
|
|
|
|
Datum
|
|
pg_stat_get_backend_userid(PG_FUNCTION_ARGS)
|
|
{
|
|
PgStat_StatBeEntry *beentry;
|
|
int32 beid;
|
|
|
|
beid = PG_GETARG_INT32(0);
|
|
|
|
if ((beentry = pgstat_fetch_stat_beentry(beid)) == NULL)
|
|
PG_RETURN_NULL();
|
|
|
|
PG_RETURN_OID(beentry->userid);
|
|
}
|
|
|
|
|
|
Datum
|
|
pg_stat_get_backend_activity(PG_FUNCTION_ARGS)
|
|
{
|
|
PgStat_StatBeEntry *beentry;
|
|
int32 beid;
|
|
int len;
|
|
text *result;
|
|
|
|
if (!superuser())
|
|
PG_RETURN_NULL();
|
|
|
|
beid = PG_GETARG_INT32(0);
|
|
|
|
if ((beentry = pgstat_fetch_stat_beentry(beid)) == NULL)
|
|
PG_RETURN_NULL();
|
|
|
|
len = strlen(beentry->activity);
|
|
result = palloc(VARHDRSZ + len);
|
|
VARATT_SIZEP(result) = VARHDRSZ + len;
|
|
memcpy(VARDATA(result), beentry->activity, len);
|
|
|
|
PG_RETURN_TEXT_P(result);
|
|
}
|
|
|
|
|
|
Datum
|
|
pg_stat_get_db_numbackends(PG_FUNCTION_ARGS)
|
|
{
|
|
PgStat_StatDBEntry *dbentry;
|
|
Oid dbid;
|
|
int32 result;
|
|
|
|
dbid = PG_GETARG_OID(0);
|
|
|
|
if ((dbentry = pgstat_fetch_stat_dbentry(dbid)) == NULL)
|
|
result = 0;
|
|
else
|
|
result = (int32)(dbentry->n_backends);
|
|
|
|
PG_RETURN_INT32(result);
|
|
}
|
|
|
|
|
|
Datum
|
|
pg_stat_get_db_xact_commit(PG_FUNCTION_ARGS)
|
|
{
|
|
PgStat_StatDBEntry *dbentry;
|
|
Oid dbid;
|
|
int64 result;
|
|
|
|
dbid = PG_GETARG_OID(0);
|
|
|
|
if ((dbentry = pgstat_fetch_stat_dbentry(dbid)) == NULL)
|
|
result = 0;
|
|
else
|
|
result = (int64)(dbentry->n_xact_commit);
|
|
|
|
PG_RETURN_INT64(result);
|
|
}
|
|
|
|
|
|
Datum
|
|
pg_stat_get_db_xact_rollback(PG_FUNCTION_ARGS)
|
|
{
|
|
PgStat_StatDBEntry *dbentry;
|
|
Oid dbid;
|
|
int64 result;
|
|
|
|
dbid = PG_GETARG_OID(0);
|
|
|
|
if ((dbentry = pgstat_fetch_stat_dbentry(dbid)) == NULL)
|
|
result = 0;
|
|
else
|
|
result = (int64)(dbentry->n_xact_rollback);
|
|
|
|
PG_RETURN_INT64(result);
|
|
}
|
|
|
|
|
|
Datum
|
|
pg_stat_get_db_blocks_fetched(PG_FUNCTION_ARGS)
|
|
{
|
|
PgStat_StatDBEntry *dbentry;
|
|
Oid dbid;
|
|
int64 result;
|
|
|
|
dbid = PG_GETARG_OID(0);
|
|
|
|
if ((dbentry = pgstat_fetch_stat_dbentry(dbid)) == NULL)
|
|
result = 0;
|
|
else
|
|
result = (int64)(dbentry->n_blocks_fetched);
|
|
|
|
PG_RETURN_INT64(result);
|
|
}
|
|
|
|
|
|
Datum
|
|
pg_stat_get_db_blocks_hit(PG_FUNCTION_ARGS)
|
|
{
|
|
PgStat_StatDBEntry *dbentry;
|
|
Oid dbid;
|
|
int64 result;
|
|
|
|
dbid = PG_GETARG_OID(0);
|
|
|
|
if ((dbentry = pgstat_fetch_stat_dbentry(dbid)) == NULL)
|
|
result = 0;
|
|
else
|
|
result = (int64)(dbentry->n_blocks_hit);
|
|
|
|
PG_RETURN_INT64(result);
|
|
}
|
|
|
|
|