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Commitfb7df89

Browse files
committed
Reload config file in startup process on SIGHUP.
Fujii Masao
1 parent820984b commitfb7df89

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2 files changed

+23
-4
lines changed

2 files changed

+23
-4
lines changed

‎src/backend/access/transam/xlog.c

Lines changed: 20 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
88
* Portions Copyright (c) 1994, Regents of the University of California
99
*
10-
* $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.332 2009/02/23 09:28:49 heikki Exp $
10+
* $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.333 2009/03/04 13:56:40 heikki Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -429,6 +429,7 @@ static bool InRedo = false;
429429
/*
430430
* Flag set by interrupt handlers for later service in the redo loop.
431431
*/
432+
staticvolatilesig_atomic_tgot_SIGHUP= false;
432433
staticvolatilesig_atomic_tshutdown_requested= false;
433434
/*
434435
* Flag set when executing a restore command, to tell SIGTERM signal handler
@@ -5362,6 +5363,15 @@ StartupXLOG(void)
53625363
}
53635364
#endif
53645365

5366+
/*
5367+
* Check if we were requested to re-read config file.
5368+
*/
5369+
if (got_SIGHUP)
5370+
{
5371+
got_SIGHUP= false;
5372+
ProcessConfigFile(PGC_SIGHUP);
5373+
}
5374+
53655375
/*
53665376
* Check if we were requested to exit without finishing
53675377
* recovery.
@@ -7641,6 +7651,13 @@ startupproc_quickdie(SIGNAL_ARGS)
76417651
}
76427652

76437653

7654+
/* SIGHUP: set flag to re-read config file at next convenient time */
7655+
staticvoid
7656+
StartupProcSigHupHandler(SIGNAL_ARGS)
7657+
{
7658+
got_SIGHUP= true;
7659+
}
7660+
76447661
/* SIGTERM: set flag to abort redo and exit */
76457662
staticvoid
76467663
StartupProcShutdownHandler(SIGNAL_ARGS)
@@ -7667,8 +7684,8 @@ StartupProcessMain(void)
76677684
/*
76687685
* Properly accept or ignore signals the postmaster might send us
76697686
*/
7670-
pqsignal(SIGHUP,SIG_IGN);/*ignore config file updates */
7671-
pqsignal(SIGINT,SIG_IGN);/* ignore query cancel */
7687+
pqsignal(SIGHUP,StartupProcSigHupHandler);/*reload config file */
7688+
pqsignal(SIGINT,SIG_IGN);/* ignore query cancel */
76727689
pqsignal(SIGTERM,StartupProcShutdownHandler);/* request shutdown */
76737690
pqsignal(SIGQUIT,startupproc_quickdie);/* hard crash time */
76747691
pqsignal(SIGALRM,SIG_IGN);

‎src/backend/postmaster/postmaster.c

Lines changed: 3 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 1.575 2009/03/03 10:42:05 heikki Exp $
40+
* $PostgreSQL: pgsql/src/backend/postmaster/postmaster.c,v 1.576 2009/03/04 13:56:40 heikki Exp $
4141
*
4242
* NOTES
4343
*
@@ -1949,6 +1949,8 @@ SIGHUP_handler(SIGNAL_ARGS)
19491949
(errmsg("received SIGHUP, reloading configuration files")));
19501950
ProcessConfigFile(PGC_SIGHUP);
19511951
SignalChildren(SIGHUP);
1952+
if (StartupPID!=0)
1953+
signal_child(StartupPID,SIGHUP);
19521954
if (BgWriterPID!=0)
19531955
signal_child(BgWriterPID,SIGHUP);
19541956
if (WalWriterPID!=0)

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