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Commit6869563

Browse files
committed
Allow the pgstat process to restart immediately after a receiving
SIGQUIT signal, rather than waiting for PGSTAT_RESTART_INTERVAL.
1 parenta4127b7 commit6869563

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3 files changed

+21
-4
lines changed

3 files changed

+21
-4
lines changed

‎src/backend/postmaster/pgstat.c‎

Lines changed: 5 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -13,7 +13,7 @@
1313
*
1414
*Copyright (c) 2001-2007, PostgreSQL Global Development Group
1515
*
16-
*$PostgreSQL: pgsql/src/backend/postmaster/pgstat.c,v 1.149 2007/03/16 17:57:36 mha Exp $
16+
*$PostgreSQL: pgsql/src/backend/postmaster/pgstat.c,v 1.150 2007/03/22 19:53:30 momjian Exp $
1717
* ----------
1818
*/
1919
#include"postgres.h"
@@ -572,6 +572,10 @@ pgstat_start(void)
572572
return0;
573573
}
574574

575+
voidallow_immediate_pgstat_restart(void)
576+
{
577+
last_pgstat_start_time=0;
578+
}
575579

576580
/* ------------------------------------------------------------
577581
* Public functions used by backends follow

‎src/backend/postmaster/postmaster.c‎

Lines changed: 14 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -37,7 +37,7 @@
3737
*
3838
*
3939
* IDENTIFICATION
40-
* $PostgreSQL: pgsql/src/backend/postmaster/postmaster.c,v 1.526 2007/03/07 13:35:02 alvherre Exp $
40+
* $PostgreSQL: pgsql/src/backend/postmaster/postmaster.c,v 1.527 2007/03/22 19:53:30 momjian Exp $
4141
*
4242
* NOTES
4343
*
@@ -1896,7 +1896,10 @@ pmdie(SIGNAL_ARGS)
18961896
signal_child(PgArchPID,SIGQUIT);
18971897
/* Tell pgstat to shut down too; nothing left for it to do */
18981898
if (PgStatPID!=0)
1899+
{
18991900
signal_child(PgStatPID,SIGQUIT);
1901+
allow_immediate_pgstat_restart();
1902+
}
19001903
/* Tell autovac launcher to shut down too */
19011904
if (AutoVacPID!=0)
19021905
signal_child(AutoVacPID,SIGTERM);
@@ -1952,7 +1955,10 @@ pmdie(SIGNAL_ARGS)
19521955
signal_child(PgArchPID,SIGQUIT);
19531956
/* Tell pgstat to shut down too; nothing left for it to do */
19541957
if (PgStatPID!=0)
1958+
{
19551959
signal_child(PgStatPID,SIGQUIT);
1960+
allow_immediate_pgstat_restart();
1961+
}
19561962
/* Tell autovac launcher to shut down too */
19571963
if (AutoVacPID!=0)
19581964
signal_child(AutoVacPID,SIGTERM);
@@ -1977,7 +1983,10 @@ pmdie(SIGNAL_ARGS)
19771983
if (PgArchPID!=0)
19781984
signal_child(PgArchPID,SIGQUIT);
19791985
if (PgStatPID!=0)
1986+
{
19801987
signal_child(PgStatPID,SIGQUIT);
1988+
allow_immediate_pgstat_restart();
1989+
}
19811990
if (DLGetHead(BackendList))
19821991
SignalChildren(SIGQUIT);
19831992
ExitPostmaster(0);
@@ -2241,7 +2250,10 @@ reaper(SIGNAL_ARGS)
22412250
signal_child(PgArchPID,SIGQUIT);
22422251
/* Tell pgstat to shut down too; nothing left for it to do */
22432252
if (PgStatPID!=0)
2253+
{
22442254
signal_child(PgStatPID,SIGQUIT);
2255+
allow_immediate_pgstat_restart();
2256+
}
22452257
/* Tell autovac launcher to shut down too */
22462258
if (AutoVacPID!=0)
22472259
signal_child(AutoVacPID,SIGTERM);
@@ -2404,6 +2416,7 @@ HandleChildCrash(int pid, int exitstatus, const char *procname)
24042416
"SIGQUIT",
24052417
(int)PgStatPID)));
24062418
signal_child(PgStatPID,SIGQUIT);
2419+
allow_immediate_pgstat_restart();
24072420
}
24082421

24092422
/* We do NOT restart the syslogger */

‎src/include/pgstat.h‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -5,7 +5,7 @@
55
*
66
*Copyright (c) 2001-2007, PostgreSQL Global Development Group
77
*
8-
*$PostgreSQL: pgsql/src/include/pgstat.h,v 1.55 2007/03/16 17:57:36 mha Exp $
8+
*$PostgreSQL: pgsql/src/include/pgstat.h,v 1.56 2007/03/22 19:53:31 momjian Exp $
99
* ----------
1010
*/
1111
#ifndefPGSTAT_H
@@ -369,7 +369,7 @@ extern void CreateSharedBackendStatus(void);
369369
externvoidpgstat_init(void);
370370
externintpgstat_start(void);
371371
externvoidpgstat_reset_all(void);
372-
372+
externvoidallow_immediate_pgstat_restart(void);
373373
#ifdefEXEC_BACKEND
374374
externvoidPgstatCollectorMain(intargc,char*argv[]);
375375
#endif

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