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Reload config file in startup process on SIGHUP. 

Fujii Masao
This commit is contained in:
Heikki Linnakangas 2009-03-04 13:56:40 +00:00
parent 820984ba05
commit fb7df896fc
2 changed files with 23 additions and 4 deletions
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23
src/backend/access/transam/xlog.c
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.332 2009/02/23 09:28:49 heikki Exp $
* $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.333 2009/03/04 13:56:40 heikki Exp $
*
*-------------------------------------------------------------------------
*/
@ -429,6 +429,7 @@ static bool InRedo = false;
/*
* Flag set by interrupt handlers for later service in the redo loop.
*/
static volatile sig_atomic_t got_SIGHUP = false;
static volatile sig_atomic_t shutdown_requested = false;
/*
* Flag set when executing a restore command, to tell SIGTERM signal handler
@ -5362,6 +5363,15 @@ StartupXLOG(void)
}
#endif
/*
* Check if we were requested to re-read config file.
*/
if (got_SIGHUP)
{
got_SIGHUP = false;
ProcessConfigFile(PGC_SIGHUP);
}
/*
* Check if we were requested to exit without finishing
* recovery.
@ -7641,6 +7651,13 @@ startupproc_quickdie(SIGNAL_ARGS)
}
/* SIGHUP: set flag to re-read config file at next convenient time */
static void
StartupProcSigHupHandler(SIGNAL_ARGS)
{
got_SIGHUP = true;
}
/* SIGTERM: set flag to abort redo and exit */
static void
StartupProcShutdownHandler(SIGNAL_ARGS)
@ -7667,8 +7684,8 @@ StartupProcessMain(void)
/*
* Properly accept or ignore signals the postmaster might send us
*/
pqsignal(SIGHUP, SIG_IGN); /* ignore config file updates */
pqsignal(SIGINT, SIG_IGN); /* ignore query cancel */
pqsignal(SIGHUP, StartupProcSigHupHandler); /* reload config file */
pqsignal(SIGINT, SIG_IGN); /* ignore query cancel */
pqsignal(SIGTERM, StartupProcShutdownHandler); /* request shutdown */
pqsignal(SIGQUIT, startupproc_quickdie); /* hard crash time */
pqsignal(SIGALRM, SIG_IGN);

4
src/backend/postmaster/postmaster.c
View File

@ -37,7 +37,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/postmaster/postmaster.c,v 1.575 2009/03/03 10:42:05 heikki Exp $
* $PostgreSQL: pgsql/src/backend/postmaster/postmaster.c,v 1.576 2009/03/04 13:56:40 heikki Exp $
*
* NOTES
*
@ -1949,6 +1949,8 @@ SIGHUP_handler(SIGNAL_ARGS)
(errmsg("received SIGHUP, reloading configuration files")));
ProcessConfigFile(PGC_SIGHUP);
SignalChildren(SIGHUP);
if (StartupPID != 0)
signal_child(StartupPID, SIGHUP);
if (BgWriterPID != 0)
signal_child(BgWriterPID, SIGHUP);
if (WalWriterPID != 0)