diff options
Diffstat (limited to 'src/backend/postmaster/pgstat.c')
| -rw-r--r-- | src/backend/postmaster/pgstat.c | 142 |
1 files changed, 72 insertions, 70 deletions
diff --git a/src/backend/postmaster/pgstat.c b/src/backend/postmaster/pgstat.c index 8623dbd005..22ba2ee344 100644 --- a/src/backend/postmaster/pgstat.c +++ b/src/backend/postmaster/pgstat.c @@ -13,7 +13,7 @@ * * Copyright (c) 2001-2007, PostgreSQL Global Development Group * - * $PostgreSQL: pgsql/src/backend/postmaster/pgstat.c,v 1.166 2007/09/25 20:03:37 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/postmaster/pgstat.c,v 1.167 2007/11/15 21:14:37 momjian Exp $ * ---------- */ #include "postgres.h" @@ -127,14 +127,14 @@ static bool pgStatRunningInCollector = false; * avoiding repeated searches in pgstat_initstats() when a relation is * repeatedly opened during a transaction. */ -#define TABSTAT_QUANTUM 100 /* we alloc this many at a time */ +#define TABSTAT_QUANTUM 100 /* we alloc this many at a time */ typedef struct TabStatusArray { struct TabStatusArray *tsa_next; /* link to next array, if any */ - int tsa_used; /* # entries currently used */ + int tsa_used; /* # entries currently used */ PgStat_TableStatus tsa_entries[TABSTAT_QUANTUM]; /* per-table data */ -} TabStatusArray; +} TabStatusArray; static TabStatusArray *pgStatTabList = NULL; @@ -147,10 +147,10 @@ static TabStatusArray *pgStatTabList = NULL; */ typedef struct PgStat_SubXactStatus { - int nest_level; /* subtransaction nest level */ + int nest_level; /* subtransaction nest level */ struct PgStat_SubXactStatus *prev; /* higher-level subxact if any */ PgStat_TableXactStatus *first; /* head of list for this subxact */ -} PgStat_SubXactStatus; +} PgStat_SubXactStatus; static PgStat_SubXactStatus *pgStatXactStack = NULL; @@ -160,11 +160,11 @@ static int pgStatXactRollback = 0; /* Record that's written to 2PC state file when pgstat state is persisted */ typedef struct TwoPhasePgStatRecord { - PgStat_Counter tuples_inserted; /* tuples inserted in xact */ - PgStat_Counter tuples_deleted; /* tuples deleted in xact */ - Oid t_id; /* table's OID */ - bool t_shared; /* is it a shared catalog? */ -} TwoPhasePgStatRecord; + PgStat_Counter tuples_inserted; /* tuples inserted in xact */ + PgStat_Counter tuples_deleted; /* tuples deleted in xact */ + Oid t_id; /* table's OID */ + bool t_shared; /* is it a shared catalog? */ +} TwoPhasePgStatRecord; /* * Info about current "snapshot" of stats file @@ -221,7 +221,7 @@ static void pgstat_recv_resetcounter(PgStat_MsgResetcounter *msg, int len); static void pgstat_recv_autovac(PgStat_MsgAutovacStart *msg, int len); static void pgstat_recv_vacuum(PgStat_MsgVacuum *msg, int len); static void pgstat_recv_analyze(PgStat_MsgAnalyze *msg, int len); -static void pgstat_recv_bgwriter(PgStat_MsgBgWriter *msg, int len); +static void pgstat_recv_bgwriter(PgStat_MsgBgWriter * msg, int len); /* ------------------------------------------------------------ @@ -470,9 +470,9 @@ startup_failed: /* * Adjust GUC variables to suppress useless activity, and for debugging - * purposes (seeing track_counts off is a clue that we failed here). - * We use PGC_S_OVERRIDE because there is no point in trying to turn it - * back on from postgresql.conf without a restart. + * purposes (seeing track_counts off is a clue that we failed here). We + * use PGC_S_OVERRIDE because there is no point in trying to turn it back + * on from postgresql.conf without a restart. */ SetConfigOption("track_counts", "off", PGC_INTERNAL, PGC_S_OVERRIDE); } @@ -531,8 +531,8 @@ pgstat_start(void) pid_t pgStatPid; /* - * Check that the socket is there, else pgstat_init failed and we can - * do nothing useful. + * Check that the socket is there, else pgstat_init failed and we can do + * nothing useful. */ if (pgStatSock < 0) return 0; @@ -587,9 +587,10 @@ pgstat_start(void) return 0; } -void allow_immediate_pgstat_restart(void) +void +allow_immediate_pgstat_restart(void) { - last_pgstat_start_time = 0; + last_pgstat_start_time = 0; } /* ------------------------------------------------------------ @@ -612,7 +613,7 @@ pgstat_report_tabstat(bool force) { /* we assume this inits to all zeroes: */ static const PgStat_TableCounts all_zeroes; - static TimestampTz last_report = 0; + static TimestampTz last_report = 0; TimestampTz now; PgStat_MsgTabstat regular_msg; @@ -638,8 +639,8 @@ pgstat_report_tabstat(bool force) /* * Scan through the TabStatusArray struct(s) to find tables that actually * have counts, and build messages to send. We have to separate shared - * relations from regular ones because the databaseid field in the - * message header has to depend on that. + * relations from regular ones because the databaseid field in the message + * header has to depend on that. */ regular_msg.m_databaseid = MyDatabaseId; shared_msg.m_databaseid = InvalidOid; @@ -658,12 +659,13 @@ pgstat_report_tabstat(bool force) Assert(entry->trans == NULL); /* - * Ignore entries that didn't accumulate any actual counts, - * such as indexes that were opened by the planner but not used. + * Ignore entries that didn't accumulate any actual counts, such + * as indexes that were opened by the planner but not used. */ if (memcmp(&entry->t_counts, &all_zeroes, sizeof(PgStat_TableCounts)) == 0) continue; + /* * OK, insert data into the appropriate message, and send if full. */ @@ -885,7 +887,7 @@ pgstat_collect_oids(Oid catalogid) scan = heap_beginscan(rel, SnapshotNow, 0, NULL); while ((tup = heap_getnext(scan, ForwardScanDirection)) != NULL) { - Oid thisoid = HeapTupleGetOid(tup); + Oid thisoid = HeapTupleGetOid(tup); CHECK_FOR_INTERRUPTS(); @@ -950,7 +952,7 @@ pgstat_drop_relation(Oid relid) msg.m_databaseid = MyDatabaseId; pgstat_send(&msg, len); } -#endif /* NOT_USED */ +#endif /* NOT_USED */ /* ---------- @@ -1021,7 +1023,7 @@ pgstat_report_vacuum(Oid tableoid, bool shared, msg.m_databaseid = shared ? InvalidOid : MyDatabaseId; msg.m_tableoid = tableoid; msg.m_analyze = analyze; - msg.m_autovacuum = IsAutoVacuumWorkerProcess(); /* is this autovacuum? */ + msg.m_autovacuum = IsAutoVacuumWorkerProcess(); /* is this autovacuum? */ msg.m_vacuumtime = GetCurrentTimestamp(); msg.m_tuples = tuples; pgstat_send(&msg, sizeof(msg)); @@ -1045,7 +1047,7 @@ pgstat_report_analyze(Oid tableoid, bool shared, PgStat_Counter livetuples, pgstat_setheader(&msg.m_hdr, PGSTAT_MTYPE_ANALYZE); msg.m_databaseid = shared ? InvalidOid : MyDatabaseId; msg.m_tableoid = tableoid; - msg.m_autovacuum = IsAutoVacuumWorkerProcess(); /* is this autovacuum? */ + msg.m_autovacuum = IsAutoVacuumWorkerProcess(); /* is this autovacuum? */ msg.m_analyzetime = GetCurrentTimestamp(); msg.m_live_tuples = livetuples; msg.m_dead_tuples = deadtuples; @@ -1107,8 +1109,8 @@ pgstat_initstats(Relation rel) } /* - * If we already set up this relation in the current transaction, - * nothing to do. + * If we already set up this relation in the current transaction, nothing + * to do. */ if (rel->pgstat_info != NULL && rel->pgstat_info->t_id == rel_id) @@ -1145,9 +1147,9 @@ get_tabstat_entry(Oid rel_id, bool isshared) if (tsa->tsa_used < TABSTAT_QUANTUM) { /* - * It must not be present, but we found a free slot instead. - * Fine, let's use this one. We assume the entry was already - * zeroed, either at creation or after last use. + * It must not be present, but we found a free slot instead. Fine, + * let's use this one. We assume the entry was already zeroed, + * either at creation or after last use. */ entry = &tsa->tsa_entries[tsa->tsa_used++]; entry->t_id = rel_id; @@ -1201,14 +1203,14 @@ get_tabstat_stack_level(int nest_level) * add_tabstat_xact_level - add a new (sub)transaction state record */ static void -add_tabstat_xact_level(PgStat_TableStatus *pgstat_info, int nest_level) +add_tabstat_xact_level(PgStat_TableStatus * pgstat_info, int nest_level) { PgStat_SubXactStatus *xact_state; PgStat_TableXactStatus *trans; /* - * If this is the first rel to be modified at the current nest level, - * we first have to push a transaction stack entry. + * If this is the first rel to be modified at the current nest level, we + * first have to push a transaction stack entry. */ xact_state = get_tabstat_stack_level(nest_level); @@ -1234,7 +1236,7 @@ pgstat_count_heap_insert(Relation rel) if (pgstat_track_counts && pgstat_info != NULL) { - int nest_level = GetCurrentTransactionNestLevel(); + int nest_level = GetCurrentTransactionNestLevel(); /* t_tuples_inserted is nontransactional, so just advance it */ pgstat_info->t_counts.t_tuples_inserted++; @@ -1258,7 +1260,7 @@ pgstat_count_heap_update(Relation rel, bool hot) if (pgstat_track_counts && pgstat_info != NULL) { - int nest_level = GetCurrentTransactionNestLevel(); + int nest_level = GetCurrentTransactionNestLevel(); /* t_tuples_updated is nontransactional, so just advance it */ pgstat_info->t_counts.t_tuples_updated++; @@ -1287,7 +1289,7 @@ pgstat_count_heap_delete(Relation rel) if (pgstat_track_counts && pgstat_info != NULL) { - int nest_level = GetCurrentTransactionNestLevel(); + int nest_level = GetCurrentTransactionNestLevel(); /* t_tuples_deleted is nontransactional, so just advance it */ pgstat_info->t_counts.t_tuples_deleted++; @@ -1341,8 +1343,8 @@ AtEOXact_PgStat(bool isCommit) /* * Transfer transactional insert/update counts into the base tabstat - * entries. We don't bother to free any of the transactional state, - * since it's all in TopTransactionContext and will go away anyway. + * entries. We don't bother to free any of the transactional state, since + * it's all in TopTransactionContext and will go away anyway. */ xact_state = pgStatXactStack; if (xact_state != NULL) @@ -1424,11 +1426,11 @@ AtEOSubXact_PgStat(bool isCommit, int nestDepth) else { /* - * When there isn't an immediate parent state, we can - * just reuse the record instead of going through a + * When there isn't an immediate parent state, we can just + * reuse the record instead of going through a * palloc/pfree pushup (this works since it's all in - * TopTransactionContext anyway). We have to re-link - * it into the parent level, though, and that might mean + * TopTransactionContext anyway). We have to re-link it + * into the parent level, though, and that might mean * pushing a new entry into the pgStatXactStack. */ PgStat_SubXactStatus *upper_xact_state; @@ -1500,7 +1502,7 @@ AtPrepare_PgStat(void) * Clean up after successful PREPARE. * * All we need do here is unlink the transaction stats state from the - * nontransactional state. The nontransactional action counts will be + * nontransactional state. The nontransactional action counts will be * reported to the stats collector immediately, while the effects on live * and dead tuple counts are preserved in the 2PC state file. * @@ -1512,8 +1514,8 @@ PostPrepare_PgStat(void) PgStat_SubXactStatus *xact_state; /* - * We don't bother to free any of the transactional state, - * since it's all in TopTransactionContext and will go away anyway. + * We don't bother to free any of the transactional state, since it's all + * in TopTransactionContext and will go away anyway. */ xact_state = pgStatXactStack; if (xact_state != NULL) @@ -1701,8 +1703,8 @@ pgstat_fetch_stat_numbackends(void) * --------- * pgstat_fetch_global() - * - * Support function for the SQL-callable pgstat* functions. Returns - * a pointer to the global statistics struct. + * Support function for the SQL-callable pgstat* functions. Returns + * a pointer to the global statistics struct. * --------- */ PgStat_GlobalStats * @@ -1795,8 +1797,8 @@ pgstat_bestart(void) volatile PgBackendStatus *beentry; /* - * To minimize the time spent modifying the PgBackendStatus entry, - * fetch all the needed data first. + * To minimize the time spent modifying the PgBackendStatus entry, fetch + * all the needed data first. * * If we have a MyProcPort, use its session start time (for consistency, * and to save a kernel call). @@ -1930,8 +1932,8 @@ pgstat_report_xact_timestamp(TimestampTz tstamp) /* * Update my status entry, following the protocol of bumping - * st_changecount before and after. We use a volatile pointer - * here to ensure the compiler doesn't try to get cute. + * st_changecount before and after. We use a volatile pointer here to + * ensure the compiler doesn't try to get cute. */ beentry->st_changecount++; beentry->st_xact_start_timestamp = tstamp; @@ -2085,7 +2087,7 @@ pgstat_send(void *msg, int len) /* ---------- * pgstat_send_bgwriter() - * - * Send bgwriter statistics to the collector + * Send bgwriter statistics to the collector * ---------- */ void @@ -2095,9 +2097,9 @@ pgstat_send_bgwriter(void) static const PgStat_MsgBgWriter all_zeroes; /* - * This function can be called even if nothing at all has happened. - * In this case, avoid sending a completely empty message to - * the stats collector. + * This function can be called even if nothing at all has happened. In + * this case, avoid sending a completely empty message to the stats + * collector. */ if (memcmp(&BgWriterStats, &all_zeroes, sizeof(PgStat_MsgBgWriter)) == 0) return; @@ -2145,13 +2147,13 @@ PgstatCollectorMain(int argc, char *argv[]) MyProcPid = getpid(); /* reset MyProcPid */ - MyStartTime = time(NULL); /* record Start Time for logging */ + MyStartTime = time(NULL); /* record Start Time for logging */ /* * If possible, make this process a group leader, so that the postmaster - * can signal any child processes too. (pgstat probably never has - * any child processes, but for consistency we make all postmaster - * child processes do this.) + * can signal any child processes too. (pgstat probably never has any + * child processes, but for consistency we make all postmaster child + * processes do this.) */ #ifdef HAVE_SETSID if (setsid() < 0) @@ -2250,8 +2252,8 @@ PgstatCollectorMain(int argc, char *argv[]) * poll/select call, so this also limits speed of response to SIGQUIT, * which is more important.) * - * We use poll(2) if available, otherwise select(2). - * Win32 has its own implementation. + * We use poll(2) if available, otherwise select(2). Win32 has its own + * implementation. */ #ifndef WIN32 #ifdef HAVE_POLL @@ -2291,9 +2293,9 @@ PgstatCollectorMain(int argc, char *argv[]) got_data = FD_ISSET(pgStatSock, &rfds); #endif /* HAVE_POLL */ -#else /* WIN32 */ +#else /* WIN32 */ got_data = pgwin32_waitforsinglesocket(pgStatSock, FD_READ, - PGSTAT_SELECT_TIMEOUT*1000); + PGSTAT_SELECT_TIMEOUT * 1000); #endif /* @@ -2363,7 +2365,7 @@ PgstatCollectorMain(int argc, char *argv[]) break; case PGSTAT_MTYPE_BGWRITER: - pgstat_recv_bgwriter((PgStat_MsgBgWriter *) &msg, len); + pgstat_recv_bgwriter((PgStat_MsgBgWriter *) & msg, len); break; default: @@ -2704,7 +2706,7 @@ pgstat_read_statsfile(Oid onlydb) dbentry->tables = hash_create("Per-database table", PGSTAT_TAB_HASH_SIZE, &hash_ctl, - HASH_ELEM | HASH_FUNCTION | HASH_CONTEXT); + HASH_ELEM | HASH_FUNCTION | HASH_CONTEXT); /* * Arrange that following 'T's add entries to this database's @@ -2813,7 +2815,7 @@ pgstat_setup_memcxt(void) /* ---------- * pgstat_clear_snapshot() - * - * Discard any data collected in the current transaction. Any subsequent + * Discard any data collected in the current transaction. Any subsequent * request will cause new snapshots to be read. * * This is also invoked during transaction commit or abort to discard @@ -3158,7 +3160,7 @@ pgstat_recv_analyze(PgStat_MsgAnalyze *msg, int len) * ---------- */ static void -pgstat_recv_bgwriter(PgStat_MsgBgWriter *msg, int len) +pgstat_recv_bgwriter(PgStat_MsgBgWriter * msg, int len) { globalStats.timed_checkpoints += msg->m_timed_checkpoints; globalStats.requested_checkpoints += msg->m_requested_checkpoints; |