database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-25 01:02:05 +03:00
Code Activity

Attached patch gets rid of the global timezone in the following steps:

Browse Source 
* Changes the APIs to the timezone functions to take a pg_tz pointer as
an argument, representing the timezone to use for the selected
operation.

* Adds a global_timezone variable that represents the current timezone
in the backend as set by SET TIMEZONE (or guc, or env, etc).

* Implements a hash-table cache of loaded tables, so we don't have to
read and parse the TZ file everytime we change a timezone. While not
necesasry now (we don't change timezones very often), I beleive this
will be necessary (or at least good) when "multiple timezones in the
same query" is eventually implemented. And code-wise, this was the time
to do it.


There are no user-visible changes at this time. Implementing the
"multiple zones in one query" is a later step...

This also gets rid of some of the cruft needed to "back out a timezone
change", since we previously couldn't check a timezone unless it was
activated first.

Passes regression tests on win32, linux (slackware 10) and solaris x86.

Magnus Hagander
This commit is contained in:
Bruce Momjian
2005-04-19 03:13:59 +00:00
parent dd39dd232f
commit aa8bdab272
11 changed files with 234 additions and 192 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/timezone/zic.c
View File

@ -3,7 +3,7 @@
* 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/timezone/zic.c,v 1.13 2004/09/27 19:16:03 momjian Exp $
* $PostgreSQL: pgsql/src/timezone/zic.c,v 1.14 2005/04/19 03:13:59 momjian Exp $
*/
#include "postgres.h"
@ -14,8 +14,8 @@
#include <limits.h>
#include <locale.h>
#include "pgtz.h"
#include "private.h"
#include "pgtz.h"
#include "tzfile.h"
#ifdef HAVE_SYS_STAT_H