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-rw-r--r--src/backend/commands/vacuum.c8
-rw-r--r--src/backend/postmaster/autovacuum.c14
-rw-r--r--src/backend/postmaster/pgstat.c367
-rw-r--r--src/backend/storage/smgr/smgr.c6
-rw-r--r--src/include/pgstat.h30
5 files changed, 216 insertions, 209 deletions
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index 2d654c82233..4a66f10bd72 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -13,7 +13,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/commands/vacuum.c,v 1.320 2006/01/04 19:16:24 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/commands/vacuum.c,v 1.321 2006/01/18 20:35:05 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -35,6 +35,7 @@
#include "commands/vacuum.h"
#include "executor/executor.h"
#include "miscadmin.h"
+#include "postmaster/autovacuum.h"
#include "storage/freespace.h"
#include "storage/procarray.h"
#include "storage/smgr.h"
@@ -324,9 +325,10 @@ vacuum(VacuumStmt *vacstmt, List *relids)
errhint("Use VACUUM FULL, then VACUUM FREEZE.")));
/*
- * Send info about dead objects to the statistics collector
+ * Send info about dead objects to the statistics collector, unless
+ * we are in autovacuum --- autovacuum.c does this for itself.
*/
- if (vacstmt->vacuum)
+ if (vacstmt->vacuum && !IsAutoVacuumProcess())
pgstat_vacuum_tabstat();
/*
diff --git a/src/backend/postmaster/autovacuum.c b/src/backend/postmaster/autovacuum.c
index c2b6ac1a298..eb748f18409 100644
--- a/src/backend/postmaster/autovacuum.c
+++ b/src/backend/postmaster/autovacuum.c
@@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/postmaster/autovacuum.c,v 1.9 2006/01/04 21:06:31 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/postmaster/autovacuum.c,v 1.10 2006/01/18 20:35:05 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -508,6 +508,11 @@ process_whole_db(void)
/* functions in indexes may want a snapshot set */
ActiveSnapshot = CopySnapshot(GetTransactionSnapshot());
+ /*
+ * Clean up any dead statistics collector entries for this DB.
+ */
+ pgstat_vacuum_tabstat();
+
dbRel = heap_open(DatabaseRelationId, AccessShareLock);
/* Must use a table scan, since there's no syscache for pg_database */
@@ -573,6 +578,13 @@ do_autovacuum(PgStat_StatDBEntry *dbentry)
ActiveSnapshot = CopySnapshot(GetTransactionSnapshot());
/*
+ * Clean up any dead statistics collector entries for this DB.
+ * We always want to do this exactly once per DB-processing cycle,
+ * even if we find nothing worth vacuuming in the database.
+ */
+ pgstat_vacuum_tabstat();
+
+ /*
* StartTransactionCommand and CommitTransactionCommand will automatically
* switch to other contexts. We need this one to keep the list of
* relations to vacuum/analyze across transactions.
diff --git a/src/backend/postmaster/pgstat.c b/src/backend/postmaster/pgstat.c
index d4a07efce2f..1b7c851d255 100644
--- a/src/backend/postmaster/pgstat.c
+++ b/src/backend/postmaster/pgstat.c
@@ -13,7 +13,7 @@
*
* Copyright (c) 2001-2005, PostgreSQL Global Development Group
*
- * $PostgreSQL: pgsql/src/backend/postmaster/pgstat.c,v 1.119 2006/01/04 21:06:31 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/postmaster/pgstat.c,v 1.120 2006/01/18 20:35:05 tgl Exp $
* ----------
*/
#include "postgres.h"
@@ -728,7 +728,8 @@ pgstat_report_vacuum(Oid tableoid, bool shared,
{
PgStat_MsgVacuum msg;
- if (pgStatSock < 0)
+ if (pgStatSock < 0 ||
+ !pgstat_collect_tuplelevel)
return;
pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_VACUUM);
@@ -751,7 +752,8 @@ pgstat_report_analyze(Oid tableoid, bool shared, PgStat_Counter livetuples,
{
PgStat_MsgAnalyze msg;
- if (pgStatSock < 0)
+ if (pgStatSock < 0 ||
+ !pgstat_collect_tuplelevel)
return;
pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_ANALYZE);
@@ -880,26 +882,21 @@ pgstat_report_tabstat(void)
* Will tell the collector about objects he can get rid of.
* ----------
*/
-int
+void
pgstat_vacuum_tabstat(void)
{
- Relation dbrel;
- HeapScanDesc dbscan;
- HeapTuple dbtup;
- Oid *dbidlist;
- int dbidalloc;
- int dbidused;
+ List *oidlist;
+ Relation rel;
+ HeapScanDesc scan;
+ HeapTuple tup;
+ PgStat_MsgTabpurge msg;
HASH_SEQ_STATUS hstat;
PgStat_StatDBEntry *dbentry;
PgStat_StatTabEntry *tabentry;
- HeapTuple reltup;
- int nobjects = 0;
- PgStat_MsgTabpurge msg;
int len;
- int i;
if (pgStatSock < 0)
- return 0;
+ return;
/*
* If not done for this transaction, read the statistics collector stats
@@ -908,15 +905,55 @@ pgstat_vacuum_tabstat(void)
backend_read_statsfile();
/*
- * Lookup our own database entry; if not found, nothing to do.
+ * Read pg_database and make a list of OIDs of all existing databases
+ */
+ oidlist = NIL;
+ rel = heap_open(DatabaseRelationId, AccessShareLock);
+ scan = heap_beginscan(rel, SnapshotNow, 0, NULL);
+ while ((tup = heap_getnext(scan, ForwardScanDirection)) != NULL)
+ {
+ oidlist = lappend_oid(oidlist, HeapTupleGetOid(tup));
+ }
+ heap_endscan(scan);
+ heap_close(rel, AccessShareLock);
+
+ /*
+ * Search the database hash table for dead databases and tell the
+ * collector to drop them.
+ */
+ hash_seq_init(&hstat, pgStatDBHash);
+ while ((dbentry = (PgStat_StatDBEntry *) hash_seq_search(&hstat)) != NULL)
+ {
+ Oid dbid = dbentry->databaseid;
+
+ if (!list_member_oid(oidlist, dbid))
+ pgstat_drop_database(dbid);
+ }
+
+ /* Clean up */
+ list_free(oidlist);
+
+ /*
+ * Lookup our own database entry; if not found, nothing more to do.
*/
dbentry = (PgStat_StatDBEntry *) hash_search(pgStatDBHash,
(void *) &MyDatabaseId,
HASH_FIND, NULL);
- if (dbentry == NULL)
- return -1;
- if (dbentry->tables == NULL)
- return 0;
+ if (dbentry == NULL || dbentry->tables == NULL)
+ return;
+
+ /*
+ * Similarly to above, make a list of all known relations in this DB.
+ */
+ oidlist = NIL;
+ rel = heap_open(RelationRelationId, AccessShareLock);
+ scan = heap_beginscan(rel, SnapshotNow, 0, NULL);
+ while ((tup = heap_getnext(scan, ForwardScanDirection)) != NULL)
+ {
+ oidlist = lappend_oid(oidlist, HeapTupleGetOid(tup));
+ }
+ heap_endscan(scan);
+ heap_close(rel, AccessShareLock);
/*
* Initialize our messages table counter to zero
@@ -929,27 +966,16 @@ pgstat_vacuum_tabstat(void)
hash_seq_init(&hstat, dbentry->tables);
while ((tabentry = (PgStat_StatTabEntry *) hash_seq_search(&hstat)) != NULL)
{
- /*
- * Check if this relation is still alive by looking up it's pg_class
- * tuple in the system catalog cache.
- */
- reltup = SearchSysCache(RELOID,
- ObjectIdGetDatum(tabentry->tableid),
- 0, 0, 0);
- if (HeapTupleIsValid(reltup))
- {
- ReleaseSysCache(reltup);
+ if (list_member_oid(oidlist, tabentry->tableid))
continue;
- }
/*
- * Add this table's Oid to the message
+ * Not there, so add this table's Oid to the message
*/
msg.m_tableid[msg.m_nentries++] = tabentry->tableid;
- nobjects++;
/*
- * If the message is full, send it out and reinitialize to zero
+ * If the message is full, send it out and reinitialize to empty
*/
if (msg.m_nentries >= PGSTAT_NUM_TABPURGE)
{
@@ -977,62 +1003,8 @@ pgstat_vacuum_tabstat(void)
pgstat_send(&msg, len);
}
- /*
- * Read pg_database and remember the Oid's of all existing databases
- */
- dbidalloc = 256;
- dbidused = 0;
- dbidlist = (Oid *) palloc(sizeof(Oid) * dbidalloc);
-
- dbrel = heap_open(DatabaseRelationId, AccessShareLock);
- dbscan = heap_beginscan(dbrel, SnapshotNow, 0, NULL);
- while ((dbtup = heap_getnext(dbscan, ForwardScanDirection)) != NULL)
- {
- if (dbidused >= dbidalloc)
- {
- dbidalloc *= 2;
- dbidlist = (Oid *) repalloc((char *) dbidlist,
- sizeof(Oid) * dbidalloc);
- }
- dbidlist[dbidused++] = HeapTupleGetOid(dbtup);
- }
- heap_endscan(dbscan);
- heap_close(dbrel, AccessShareLock);
-
- /*
- * Search the database hash table for dead databases and tell the
- * collector to drop them as well.
- */
- hash_seq_init(&hstat, pgStatDBHash);
- while ((dbentry = (PgStat_StatDBEntry *) hash_seq_search(&hstat)) != NULL)
- {
- Oid dbid = dbentry->databaseid;
-
- for (i = 0; i < dbidused; i++)
- {
- if (dbidlist[i] == dbid)
- {
- dbid = InvalidOid;
- break;
- }
- }
-
- if (dbid != InvalidOid)
- {
- pgstat_drop_database(dbid);
- nobjects++;
- }
- }
-
- /*
- * Free the dbid list.
- */
- pfree(dbidlist);
-
- /*
- * Tell the caller how many removeable objects we found
- */
- return nobjects;
+ /* Clean up */
+ list_free(oidlist);
}
@@ -1040,9 +1012,8 @@ pgstat_vacuum_tabstat(void)
* pgstat_drop_database() -
*
* Tell the collector that we just dropped a database.
- * This is the only message that shouldn't get lost in space. Otherwise
- * the collector will keep the statistics for the dead DB until his
- * stats file got removed while the postmaster is down.
+ * (If the message gets lost, we will still clean the dead DB eventually
+ * via future invocations of pgstat_vacuum_tabstat().)
* ----------
*/
static void
@@ -1060,6 +1031,34 @@ pgstat_drop_database(Oid databaseid)
/* ----------
+ * pgstat_drop_relation() -
+ *
+ * Tell the collector that we just dropped a relation.
+ * (If the message gets lost, we will still clean the dead entry eventually
+ * via future invocations of pgstat_vacuum_tabstat().)
+ * ----------
+ */
+void
+pgstat_drop_relation(Oid relid)
+{
+ PgStat_MsgTabpurge msg;
+ int len;
+
+ if (pgStatSock < 0)
+ return;
+
+ msg.m_tableid[0] = relid;
+ msg.m_nentries = 1;
+
+ len = offsetof(PgStat_MsgTabpurge, m_tableid[0]) + sizeof(Oid);
+
+ pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_TABPURGE);
+ msg.m_databaseid = MyDatabaseId;
+ pgstat_send(&msg, len);
+}
+
+
+/* ----------
* pgstat_reset_counters() -
*
* Tell the statistics collector to reset counters for our database.
@@ -2327,13 +2326,15 @@ pgstat_write_statsfile(void)
}
/*
- * Write out the DB line including the number of live backends.
+ * Write out the DB entry including the number of live backends.
+ * We don't write the tables pointer since it's of no use to any
+ * other process.
*/
fputc('D', fpout);
- fwrite(dbentry, sizeof(PgStat_StatDBEntry), 1, fpout);
+ fwrite(dbentry, offsetof(PgStat_StatDBEntry, tables), 1, fpout);
/*
- * Walk through the databases access stats per table.
+ * Walk through the database's access stats per table.
*/
hash_seq_init(&tstat, dbentry->tables);
while ((tabentry = (PgStat_StatTabEntry *) hash_seq_search(&tstat)) != NULL)
@@ -2349,19 +2350,17 @@ pgstat_write_statsfile(void)
if (hash_search(dbentry->tables,
(void *) &(tabentry->tableid),
HASH_REMOVE, NULL) == NULL)
- {
ereport(ERROR,
(errmsg("tables hash table for "
"database %u corrupted during "
"cleanup --- abort",
dbentry->databaseid)));
- }
}
continue;
}
/*
- * At least we think this is still a live table. Print its access
+ * At least we think this is still a live table. Emit its access
* stats.
*/
fputc('T', fpout);
@@ -2383,34 +2382,51 @@ pgstat_write_statsfile(void)
for (i = 0; i < MaxBackends; i++)
{
- if (pgStatBeTable[i].procpid > 0)
+ PgStat_StatBeEntry *beentry = &pgStatBeTable[i];
+
+ if (beentry->procpid > 0)
{
+ int len;
+
+ len = offsetof(PgStat_StatBeEntry, activity) +
+ strlen(beentry->activity) + 1;
fputc('B', fpout);
- fwrite(&pgStatBeTable[i], sizeof(PgStat_StatBeEntry), 1, fpout);
+ fwrite(&len, sizeof(len), 1, fpout);
+ fwrite(beentry, len, 1, fpout);
}
}
/*
* No more output to be done. Close the temp file and replace the old
- * pgstat.stat with it.
+ * pgstat.stat with it. The ferror() check replaces testing for error
+ * after each individual fputc or fwrite above.
*/
fputc('E', fpout);
- if (fclose(fpout) < 0)
+
+ if (ferror(fpout))
+ {
+ ereport(LOG,
+ (errcode_for_file_access(),
+ errmsg("could not write temporary statistics file \"%s\": %m",
+ PGSTAT_STAT_TMPFILE)));
+ fclose(fpout);
+ unlink(PGSTAT_STAT_TMPFILE);
+ }
+ else if (fclose(fpout) < 0)
{
ereport(LOG,
(errcode_for_file_access(),
errmsg("could not close temporary statistics file \"%s\": %m",
PGSTAT_STAT_TMPFILE)));
+ unlink(PGSTAT_STAT_TMPFILE);
}
- else
+ else if (rename(PGSTAT_STAT_TMPFILE, PGSTAT_STAT_FILENAME) < 0)
{
- if (rename(PGSTAT_STAT_TMPFILE, PGSTAT_STAT_FILENAME) < 0)
- {
- ereport(LOG,
- (errcode_for_file_access(),
- errmsg("could not rename temporary statistics file \"%s\" to \"%s\": %m",
- PGSTAT_STAT_TMPFILE, PGSTAT_STAT_FILENAME)));
- }
+ ereport(LOG,
+ (errcode_for_file_access(),
+ errmsg("could not rename temporary statistics file \"%s\" to \"%s\": %m",
+ PGSTAT_STAT_TMPFILE, PGSTAT_STAT_FILENAME)));
+ unlink(PGSTAT_STAT_TMPFILE);
}
/*
@@ -2427,11 +2443,9 @@ pgstat_write_statsfile(void)
if (hash_search(pgStatBeDead,
(void *) &(deadbe->procpid),
HASH_REMOVE, NULL) == NULL)
- {
ereport(ERROR,
(errmsg("dead-server-process hash table corrupted "
"during cleanup --- abort")));
- }
}
}
}
@@ -2468,6 +2482,7 @@ pgstat_read_statsfile(HTAB **dbhash, Oid onlydb,
HTAB *tabhash = NULL;
FILE *fpin;
int32 format_id;
+ int len;
int maxbackends = 0;
int havebackends = 0;
bool found;
@@ -2556,7 +2571,8 @@ pgstat_read_statsfile(HTAB **dbhash, Oid onlydb,
* until a 'd' is encountered.
*/
case 'D':
- if (fread(&dbbuf, 1, sizeof(dbbuf), fpin) != sizeof(dbbuf))
+ if (fread(&dbbuf, 1, offsetof(PgStat_StatDBEntry, tables),
+ fpin) != offsetof(PgStat_StatDBEntry, tables))
{
ereport(pgStatRunningInCollector ? LOG : WARNING,
(errmsg("corrupted pgstat.stat file")));
@@ -2604,7 +2620,7 @@ pgstat_read_statsfile(HTAB **dbhash, Oid onlydb,
HASH_ELEM | HASH_FUNCTION | mcxt_flags);
/*
- * Arrange that following 'T's add entries to this databases
+ * Arrange that following 'T's add entries to this database's
* tables hash table.
*/
tabhash = dbentry->tables;
@@ -2621,7 +2637,8 @@ pgstat_read_statsfile(HTAB **dbhash, Oid onlydb,
* 'T' A PgStat_StatTabEntry follows.
*/
case 'T':
- if (fread(&tabbuf, 1, sizeof(tabbuf), fpin) != sizeof(tabbuf))
+ if (fread(&tabbuf, 1, sizeof(PgStat_StatTabEntry),
+ fpin) != sizeof(PgStat_StatTabEntry))
{
ereport(pgStatRunningInCollector ? LOG : WARNING,
(errmsg("corrupted pgstat.stat file")));
@@ -2687,13 +2704,27 @@ pgstat_read_statsfile(HTAB **dbhash, Oid onlydb,
if (havebackends >= maxbackends)
goto done;
+ /* Read and validate the entry length */
+ if (fread(&len, 1, sizeof(len), fpin) != sizeof(len))
+ {
+ ereport(pgStatRunningInCollector ? LOG : WARNING,
+ (errmsg("corrupted pgstat.stat file")));
+ goto done;
+ }
+ if (len <= offsetof(PgStat_StatBeEntry, activity) ||
+ len > sizeof(PgStat_StatBeEntry))
+ {
+ ereport(pgStatRunningInCollector ? LOG : WARNING,
+ (errmsg("corrupted pgstat.stat file")));
+ goto done;
+ }
+
/*
* Read it directly into the table.
*/
beentry = &(*betab)[havebackends];
- if (fread(beentry, 1, sizeof(PgStat_StatBeEntry), fpin) !=
- sizeof(PgStat_StatBeEntry))
+ if (fread(beentry, 1, len, fpin) != len)
{
ereport(pgStatRunningInCollector ? LOG : WARNING,
(errmsg("corrupted pgstat.stat file")));
@@ -2872,57 +2903,25 @@ pgstat_recv_vacuum(PgStat_MsgVacuum *msg, int len)
{
PgStat_StatDBEntry *dbentry;
PgStat_StatTabEntry *tabentry;
- bool found;
- bool create;
/*
- * If we don't know about the database, ignore the message, because it may
- * be autovacuum processing a template database. But if the message is
- * for database InvalidOid, don't ignore it, because we are getting a
- * message from vacuuming a shared relation.
+ * Don't create either the database or table entry if it doesn't already
+ * exist. This avoids bloating the stats with entries for stuff that is
+ * only touched by vacuum and not by live operations.
*/
- create = (msg->m_databaseid == InvalidOid);
-
- dbentry = pgstat_get_db_entry(msg->m_databaseid, create);
+ dbentry = pgstat_get_db_entry(msg->m_databaseid, false);
if (dbentry == NULL)
return;
tabentry = hash_search(dbentry->tables, &(msg->m_tableoid),
- HASH_ENTER, &found);
-
- /*
- * If we are creating the entry, initialize it.
- */
- if (!found)
- {
- tabentry->numscans = 0;
-
- tabentry->tuples_returned = 0;
- tabentry->tuples_fetched = 0;
- tabentry->tuples_inserted = 0;
- tabentry->tuples_updated = 0;
- tabentry->tuples_deleted = 0;
-
- tabentry->n_live_tuples = msg->m_tuples;
- tabentry->n_dead_tuples = 0;
-
- if (msg->m_analyze)
- tabentry->last_anl_tuples = msg->m_tuples;
- else
- tabentry->last_anl_tuples = 0;
-
- tabentry->blocks_fetched = 0;
- tabentry->blocks_hit = 0;
+ HASH_FIND, NULL);
+ if (tabentry == NULL)
+ return;
- tabentry->destroy = 0;
- }
- else
- {
- tabentry->n_live_tuples = msg->m_tuples;
- tabentry->n_dead_tuples = 0;
- if (msg->m_analyze)
- tabentry->last_anl_tuples = msg->m_tuples;
- }
+ tabentry->n_live_tuples = msg->m_tuples;
+ tabentry->n_dead_tuples = 0;
+ if (msg->m_analyze)
+ tabentry->last_anl_tuples = msg->m_tuples;
}
/* ----------
@@ -2936,46 +2935,24 @@ pgstat_recv_analyze(PgStat_MsgAnalyze *msg, int len)
{
PgStat_StatDBEntry *dbentry;
PgStat_StatTabEntry *tabentry;
- bool found;
/*
- * Note that we do create the database entry here, as opposed to what we
- * do on AutovacStart and Vacuum messages. This is because autovacuum
- * never executes ANALYZE on template databases.
+ * Don't create either the database or table entry if it doesn't already
+ * exist. This avoids bloating the stats with entries for stuff that is
+ * only touched by analyze and not by live operations.
*/
- dbentry = pgstat_get_db_entry(msg->m_databaseid, true);
+ dbentry = pgstat_get_db_entry(msg->m_databaseid, false);
+ if (dbentry == NULL)
+ return;
tabentry = hash_search(dbentry->tables, &(msg->m_tableoid),
- HASH_ENTER, &found);
-
- /*
- * If we are creating the entry, initialize it.
- */
- if (!found)
- {
- tabentry->numscans = 0;
-
- tabentry->tuples_returned = 0;
- tabentry->tuples_fetched = 0;
- tabentry->tuples_inserted = 0;
- tabentry->tuples_updated = 0;
- tabentry->tuples_deleted = 0;
-
- tabentry->n_live_tuples = msg->m_live_tuples;
- tabentry->n_dead_tuples = msg->m_dead_tuples;
- tabentry->last_anl_tuples = msg->m_live_tuples + msg->m_dead_tuples;
-
- tabentry->blocks_fetched = 0;
- tabentry->blocks_hit = 0;
+ HASH_FIND, NULL);
+ if (tabentry == NULL)
+ return;
- tabentry->destroy = 0;
- }
- else
- {
- tabentry->n_live_tuples = msg->m_live_tuples;
- tabentry->n_dead_tuples = msg->m_dead_tuples;
- tabentry->last_anl_tuples = msg->m_live_tuples + msg->m_dead_tuples;
- }
+ tabentry->n_live_tuples = msg->m_live_tuples;
+ tabentry->n_dead_tuples = msg->m_dead_tuples;
+ tabentry->last_anl_tuples = msg->m_live_tuples + msg->m_dead_tuples;
}
/* ----------
diff --git a/src/backend/storage/smgr/smgr.c b/src/backend/storage/smgr/smgr.c
index e632a1bc85a..3be6dd31986 100644
--- a/src/backend/storage/smgr/smgr.c
+++ b/src/backend/storage/smgr/smgr.c
@@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/storage/smgr/smgr.c,v 1.94 2005/11/22 18:17:21 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/storage/smgr/smgr.c,v 1.95 2006/01/18 20:35:06 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -19,6 +19,7 @@
#include "access/xact.h"
#include "commands/tablespace.h"
+#include "pgstat.h"
#include "storage/bufmgr.h"
#include "storage/freespace.h"
#include "storage/ipc.h"
@@ -469,6 +470,9 @@ smgr_internal_unlink(RelFileNode rnode, int which, bool isTemp, bool isRedo)
*/
FreeSpaceMapForgetRel(&rnode);
+ /* Tell the stats collector to forget it immediately, too. */
+ pgstat_drop_relation(rnode.relNode);
+
/*
* And delete the physical files.
*
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 40ee8e763df..0a943590ec7 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -5,7 +5,7 @@
*
* Copyright (c) 2001-2005, PostgreSQL Global Development Group
*
- * $PostgreSQL: pgsql/src/include/pgstat.h,v 1.40 2005/12/31 19:39:11 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/pgstat.h,v 1.41 2006/01/18 20:35:06 tgl Exp $
* ----------
*/
#ifndef PGSTAT_H
@@ -271,7 +271,7 @@ typedef union PgStat_Msg
* ------------------------------------------------------------
*/
-#define PGSTAT_FILE_FORMAT_ID 0x01A5BC93
+#define PGSTAT_FILE_FORMAT_ID 0x01A5BC94
/* ----------
* PgStat_StatDBEntry The collector's data per database
@@ -280,14 +280,19 @@ typedef union PgStat_Msg
typedef struct PgStat_StatDBEntry
{
Oid databaseid;
- HTAB *tables;
+ int destroy;
int n_backends;
PgStat_Counter n_xact_commit;
PgStat_Counter n_xact_rollback;
PgStat_Counter n_blocks_fetched;
PgStat_Counter n_blocks_hit;
- int destroy;
TimestampTz last_autovac_time;
+
+ /*
+ * tables must be last in the struct, because we don't write the pointer
+ * out to the stats file.
+ */
+ HTAB *tables;
} PgStat_StatDBEntry;
@@ -301,10 +306,9 @@ typedef struct PgStat_StatBeEntry
int procpid;
TimestampTz start_timestamp;
TimestampTz activity_start_timestamp;
- char activity[PGSTAT_ACTIVITY_SIZE];
/*
- * The following fields are initialized by the BESTART message. If we have
+ * These fields are initialized by the BESTART message. If we have
* received messages from a backend before we have received its BESTART,
* these fields will be uninitialized: userid and databaseid will be
* InvalidOid, and clientaddr will be undefined.
@@ -312,6 +316,12 @@ typedef struct PgStat_StatBeEntry
Oid userid;
Oid databaseid;
SockAddr clientaddr;
+
+ /*
+ * activity[] must be last in the struct, because we only write as much
+ * of it as needed to the stats file.
+ */
+ char activity[PGSTAT_ACTIVITY_SIZE];
} PgStat_StatBeEntry;
@@ -321,6 +331,8 @@ typedef struct PgStat_StatBeEntry
* about backends that are known to be
* dead for some seconds. This info is held
* in a hash table of these structs.
+ *
+ * (This struct is not used in the stats file.)
* ----------
*/
typedef struct PgStat_StatBeDead
@@ -338,6 +350,7 @@ typedef struct PgStat_StatBeDead
typedef struct PgStat_StatTabEntry
{
Oid tableid;
+ int destroy;
PgStat_Counter numscans;
@@ -354,8 +367,6 @@ typedef struct PgStat_StatTabEntry
PgStat_Counter blocks_fetched;
PgStat_Counter blocks_hit;
-
- int destroy;
} PgStat_StatTabEntry;
@@ -400,7 +411,8 @@ extern void pgstat_report_vacuum(Oid tableoid, bool shared,
extern void pgstat_report_analyze(Oid tableoid, bool shared,
PgStat_Counter livetuples,
PgStat_Counter deadtuples);
-extern int pgstat_vacuum_tabstat(void);
+extern void pgstat_vacuum_tabstat(void);
+extern void pgstat_drop_relation(Oid relid);
extern void pgstat_reset_counters(void);
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-31 07:01:50 +0000