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Switch over to using the src/timezone functions for formatting timestamps

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displayed in the postmaster log.  This avoids Windows-specific problems with
localized time zone names that are in the wrong encoding, and generally seems
like a good idea to forestall other potential platform-dependent issues.
To preserve the existing behavior that all backends will log in the same time
zone, create a new GUC variable log_timezone that can only be changed on a
system-wide basis, and reference log-related calculations to that zone instead
of the TimeZone variable.

This fixes the issue reported by Hiroshi Saito that timestamps printed by
xlog.c startup could be improperly localized on Windows.  We still need a
simpler patch for that problem in the back branches, however.
This commit is contained in:
Tom Lane
2007-08-04 01:26:54 +00:00
parent 73852bd520
commit bdd6b62245
16 changed files with 275 additions and 148 deletions
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5
src/include/pgtime.h
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@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/include/pgtime.h,v 1.15 2007/01/05 22:19:50 momjian Exp $
* $PostgreSQL: pgsql/src/include/pgtime.h,v 1.16 2007/08/04 01:26:54 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -62,7 +62,8 @@ extern pg_tzenum *pg_tzenumerate_start(void);
extern pg_tz *pg_tzenumerate_next(pg_tzenum *dir);
extern void pg_tzenumerate_end(pg_tzenum *dir);
extern pg_tz *global_timezone;
extern pg_tz *session_timezone;
extern pg_tz *log_timezone;
/* Maximum length of a timezone name (not including trailing null) */
#define TZ_STRLEN_MAX 255