Add pg_postmaster_start_time() function.
Euler Taveira de Oliveira Matthias Schmidt
This commit is contained in:
Bruce Momjian
parent
b5e65c8325
commit
f5835b4b8d
@ -1,5 +1,5 @@
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<!--
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$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.254 2005/06/13 02:40:04 neilc Exp $
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$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.255 2005/06/14 21:04:38 momjian Exp $
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PostgreSQL documentation
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-->
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@ -8119,6 +8119,12 @@ select current_date + s.a as dates from generate_series(0,14,7) as s(a);
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<entry>session user name</entry>
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</row>
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<row>
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<entry><function>pg_postmaster_start_time()</function></entry>
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<entry><type>timestamp with time zone</type></entry>
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<entry><command>postmaster</> start time</entry>
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</row>
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<row>
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<entry><function>user</function></entry>
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<entry><type>name</type></entry>
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@ -8216,6 +8222,15 @@ SET search_path TO <replaceable>schema</> <optional>, <replaceable>schema</>, ..
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Unix-domain socket.
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</para>
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<indexterm zone="functions-info">
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<primary>pg_postmaster_start_time</primary>
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</indexterm>
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<para>
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<function>pg_postmaster_start_time()</function> returns the timestamp with time zone
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when the <command>postmaster</> started.
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</para>
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<indexterm zone="functions-info">
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<primary>version</primary>
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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 1.452 2005/06/09 22:01:12 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/postmaster/postmaster.c,v 1.453 2005/06/14 21:04:39 momjian Exp $
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*
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* NOTES
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*
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@ -222,6 +222,9 @@ static bool FatalError = false; /* T if recovering from backend crash */
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bool ClientAuthInProgress = false; /* T during new-client
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* authentication */
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/* Backend startup time */
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TimestampTz StartTime;
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/*
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* State for assigning random salts and cancel keys.
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* Also, the global MyCancelKey passes the cancel key assigned to a given
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@ -330,6 +333,7 @@ typedef struct
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InheritableSocket pgStatPipe0;
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InheritableSocket pgStatPipe1;
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pid_t PostmasterPid;
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TimestampTz StartTime;
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#ifdef WIN32
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HANDLE PostmasterHandle;
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HANDLE initial_signal_pipe;
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@ -372,6 +376,9 @@ PostmasterMain(int argc, char *argv[])
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char *userDoption = NULL;
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int i;
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AbsoluteTime StartTimeSec; /* integer part */
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int StartTimeUSec; /* microsecond part */
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/* This will call exit() if strdup() fails. */
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progname = get_progname(argv[0]);
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@ -914,6 +921,12 @@ PostmasterMain(int argc, char *argv[])
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*/
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StartupPID = StartupDataBase();
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/*
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* Get start up time
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*/
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StartTimeSec = GetCurrentAbsoluteTimeUsec(&StartTimeUSec);
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StartTime = AbsoluteTimeUsecToTimestampTz(StartTimeSec, StartTimeUSec);
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status = ServerLoop();
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/*
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@ -3603,6 +3616,7 @@ save_backend_variables(BackendParameters *param, Port *port,
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write_inheritable_socket(¶m->pgStatPipe1, pgStatPipe[1], childPid);
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param->PostmasterPid = PostmasterPid;
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param->StartTime = StartTime;
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#ifdef WIN32
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param->PostmasterHandle = PostmasterHandle;
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@ -3805,6 +3819,7 @@ restore_backend_variables(BackendParameters *param, Port *port)
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read_inheritable_socket(&pgStatPipe[1], ¶m->pgStatPipe1);
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PostmasterPid = param->PostmasterPid;
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StartTime = param->StartTime;
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#ifdef WIN32
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PostmasterHandle = param->PostmasterHandle;
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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/tcop/postgres.c,v 1.447 2005/06/03 23:05:29 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/tcop/postgres.c,v 1.448 2005/06/14 21:04:40 momjian Exp $
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*
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* NOTES
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* this is the "main" module of the postgres backend and
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@ -149,6 +149,9 @@ static int UseNewLine = 0; /* Use EOF as query delimiters */
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#endif /* TCOP_DONTUSENEWLINE */
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/* Backend startup time */
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TimestampTz StartTime;
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/* ----------------------------------------------------------------
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* decls for routines only used in this file
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* ----------------------------------------------------------------
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@ -2380,6 +2383,9 @@ PostgresMain(int argc, char *argv[], const char *username)
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sigjmp_buf local_sigjmp_buf;
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volatile bool send_rfq = true;
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AbsoluteTime StartTimeSec; /* integer part */
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int StartTimeUSec; /* microsecond part */
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#define PendingConfigOption(name,val) \
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(guc_names = lappend(guc_names, pstrdup(name)), \
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guc_values = lappend(guc_values, pstrdup(val)))
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@ -2969,6 +2975,15 @@ PostgresMain(int argc, char *argv[], const char *username)
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*/
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pgstat_bestart();
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/*
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* Get stand-alone backend startup time
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*/
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if (!IsUnderPostmaster)
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{
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StartTimeSec = GetCurrentAbsoluteTimeUsec(&StartTimeUSec);
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StartTime = AbsoluteTimeUsecToTimestampTz(StartTimeSec, StartTimeUSec);
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}
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/*
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* POSTGRES main processing loop begins here
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*
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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 1.124 2005/05/26 02:04:13 neilc Exp $
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* $PostgreSQL: pgsql/src/backend/utils/adt/timestamp.c,v 1.125 2005/06/14 21:04:40 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -938,6 +938,12 @@ now(PG_FUNCTION_ARGS)
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PG_RETURN_TIMESTAMPTZ(result);
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}
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Datum
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pgsql_postmaster_start_time(PG_FUNCTION_ARGS)
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{
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PG_RETURN_TIMESTAMPTZ(StartTime);
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}
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void
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dt2time(Timestamp jd, int *hour, int *min, int *sec, fsec_t *fsec)
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{
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@ -7,7 +7,7 @@
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* Portions Copyright (c) 1996-2005, 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 1.366 2005/06/13 02:26:50 tgl Exp $
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* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.367 2005/06/14 21:04:41 momjian 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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@ -3651,6 +3651,10 @@ DESCR("convert boolean to int4");
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DATA(insert OID = 2559 ( lastval PGNSP PGUID 12 f f t f v 0 20 "" _null_ _null_ _null_ lastval - _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 f f t f s 0 1184 "" _null_ _null_ _null_ pgsql_postmaster_start_time - _null_ ));
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DESCR("postmaster start time");
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/*
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* Symbolic values for provolatile column: these indicate whether the result
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@ -6,7 +6,7 @@
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* Portions Copyright (c) 1996-2005, 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 1.43 2005/05/25 21:40:42 momjian Exp $
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* $PostgreSQL: pgsql/src/include/utils/timestamp.h,v 1.44 2005/06/14 21:04:42 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -256,6 +256,10 @@ extern Datum timestamptz_part(PG_FUNCTION_ARGS);
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extern Datum now(PG_FUNCTION_ARGS);
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extern Datum pgsql_postmaster_start_time(PG_FUNCTION_ARGS);
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extern TimestampTz StartTime;
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/* Internal routines (not fmgr-callable) */
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extern int tm2timestamp(struct pg_tm * tm, fsec_t fsec, int *tzp, Timestamp *dt);
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