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Add pg_conf_load_time() function to report when the Postgres configuration
files were last loaded. George Gensure
This commit is contained in:
Tom Lane
parent
45173ae24e
commit
600da67fbe
@ -1,4 +1,4 @@
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<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.434 2008/04/28 14:48:57 alvherre Exp $ -->
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<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.435 2008/05/04 21:13:35 tgl Exp $ -->
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<chapter id="functions">
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<title>Functions and Operators</title>
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@ -10891,6 +10891,12 @@ postgres=# select * from unnest2(array[[1,2],[3,4]]);
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<entry>server start time</entry>
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</row>
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<row>
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<entry><literal><function>pg_conf_load_time</function>()</literal></entry>
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<entry><type>timestamp with time zone</type></entry>
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<entry>configuration load time</entry>
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</row>
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<row>
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<entry><literal><function>session_user</function></literal></entry>
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<entry><type>name</type></entry>
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@ -11031,9 +11037,23 @@ SET search_path TO <replaceable>schema</> <optional>, <replaceable>schema</>, ..
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</indexterm>
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<para>
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<function>pg_postmaster_start_time</function> returns the
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<type>timestamp with time zone</type> when the
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server started.
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<function>pg_postmaster_start_time</function> returns the
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<type>timestamp with time zone</type> when the
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server started.
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</para>
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<indexterm>
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<primary>pg_conf_load_time</primary>
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</indexterm>
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<para>
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<function>pg_conf_load_time</function> returns the
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<type>timestamp with time zone</type> when the
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server configuration files were last loaded.
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(If the current session was alive at the time, this will be the time
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when the session itself re-read the configuration files, so the
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reading will vary a little in different sessions. Otherwise it is
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the time when the postmaster process re-read the configuration files.)
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</para>
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<indexterm>
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@ -37,7 +37,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/postmaster/postmaster.c,v 1.556 2008/04/26 22:47:40 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/postmaster/postmaster.c,v 1.557 2008/05/04 21:13:35 tgl Exp $
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*
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* NOTES
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*
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@ -390,6 +390,7 @@ typedef struct
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InheritableSocket pgStatSock;
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pid_t PostmasterPid;
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TimestampTz PgStartTime;
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TimestampTz PgReloadTime;
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bool redirection_done;
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#ifdef WIN32
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HANDLE PostmasterHandle;
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@ -4263,6 +4264,7 @@ save_backend_variables(BackendParameters * param, Port *port,
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param->PostmasterPid = PostmasterPid;
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param->PgStartTime = PgStartTime;
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param->PgReloadTime = PgReloadTime;
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param->redirection_done = redirection_done;
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@ -4468,6 +4470,7 @@ restore_backend_variables(BackendParameters * param, Port *port)
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PostmasterPid = param->PostmasterPid;
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PgStartTime = param->PgStartTime;
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PgReloadTime = param->PgReloadTime;
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redirection_done = param->redirection_done;
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@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/utils/adt/timestamp.c,v 1.187 2008/03/25 22:42:44 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/utils/adt/timestamp.c,v 1.188 2008/05/04 21:13:35 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -42,6 +42,8 @@
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/* Set at postmaster start */
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TimestampTz PgStartTime;
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/* Set at configuration reload */
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TimestampTz PgReloadTime;
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static TimeOffset time2t(const int hour, const int min, const int sec, const fsec_t fsec);
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@ -1157,11 +1159,17 @@ clock_timestamp(PG_FUNCTION_ARGS)
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}
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Datum
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pgsql_postmaster_start_time(PG_FUNCTION_ARGS)
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pg_postmaster_start_time(PG_FUNCTION_ARGS)
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{
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PG_RETURN_TIMESTAMPTZ(PgStartTime);
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}
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Datum
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pg_conf_load_time(PG_FUNCTION_ARGS)
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{
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PG_RETURN_TIMESTAMPTZ(PgReloadTime);
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}
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/*
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* GetCurrentTimestamp -- get the current operating system time
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*
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@ -4,7 +4,7 @@
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*
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* Copyright (c) 2000-2008, PostgreSQL Global Development Group
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*
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* $PostgreSQL: pgsql/src/backend/utils/misc/guc-file.l,v 1.53 2008/01/01 19:45:54 momjian Exp $
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* $PostgreSQL: pgsql/src/backend/utils/misc/guc-file.l,v 1.54 2008/05/04 21:13:35 tgl Exp $
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*/
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%{
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@ -309,6 +309,9 @@ ProcessConfigFile(GucContext context)
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PGC_S_FILE, GUC_ACTION_SET, true);
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}
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/* Remember when we last successfully loaded the config file. */
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PgReloadTime = GetCurrentTimestamp();
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cleanup_list:
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free_name_value_list(head);
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if (cvc)
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@ -37,7 +37,7 @@
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* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.453 2008/04/29 14:59:17 alvherre Exp $
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* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.454 2008/05/04 21:13:35 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -53,6 +53,6 @@
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*/
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/* yyyymmddN */
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#define CATALOG_VERSION_NO 200804292
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#define CATALOG_VERSION_NO 200805041
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#endif
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@ -7,7 +7,7 @@
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* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.494 2008/04/29 13:00:22 alvherre Exp $
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* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.495 2008/05/04 21:13:36 tgl Exp $
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*
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* NOTES
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* The script catalog/genbki.sh reads this file and generates .bki
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@ -3922,8 +3922,11 @@ DATA(insert OID = 2559 ( lastval PGNSP PGUID 12 1 0 f f t f v 0 20 "" _null
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DESCR("current value from last used sequence");
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/* start time function */
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DATA(insert OID = 2560 ( pg_postmaster_start_time PGNSP PGUID 12 1 0 f f t f s 0 1184 "" _null_ _null_ _null_ pgsql_postmaster_start_time - _null_ _null_ ));
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DATA(insert OID = 2560 ( pg_postmaster_start_time PGNSP PGUID 12 1 0 f f t f s 0 1184 "" _null_ _null_ _null_ pg_postmaster_start_time - _null_ _null_ ));
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DESCR("postmaster start time");
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/* config reload time function */
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DATA(insert OID = 2034 ( pg_conf_load_time PGNSP PGUID 12 1 0 f f t f s 0 1184 "" _null_ _null_ _null_ pg_conf_load_time - _null_ _null_ ));
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DESCR("configuration load time");
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/* new functions for Y-direction rtree opclasses */
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DATA(insert OID = 2562 ( box_below PGNSP PGUID 12 1 0 f f t f i 2 16 "603 603" _null_ _null_ _null_ box_below - _null_ _null_ ));
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@ -6,7 +6,7 @@
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* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $PostgreSQL: pgsql/src/include/utils/timestamp.h,v 1.76 2008/03/21 01:31:43 tgl Exp $
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* $PostgreSQL: pgsql/src/include/utils/timestamp.h,v 1.77 2008/05/04 21:13:36 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -195,6 +195,8 @@ typedef struct
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/* Set at postmaster start */
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extern TimestampTz PgStartTime;
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/* Set at configuration reload */
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extern TimestampTz PgReloadTime;
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/*
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@ -303,7 +305,8 @@ extern Datum now(PG_FUNCTION_ARGS);
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extern Datum statement_timestamp(PG_FUNCTION_ARGS);
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extern Datum clock_timestamp(PG_FUNCTION_ARGS);
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extern Datum pgsql_postmaster_start_time(PG_FUNCTION_ARGS);
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extern Datum pg_postmaster_start_time(PG_FUNCTION_ARGS);
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extern Datum pg_conf_load_time(PG_FUNCTION_ARGS);
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/* Internal routines (not fmgr-callable) */
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