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| author | Bruce Momjian <bruce@momjian.us> | 2005-04-19 03:13:59 +0000 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2005-04-19 03:13:59 +0000 |
| commit | aa8bdab272b6def93864797a31ebe34814d0f4bb (patch) | |
| tree | 4395ef4ac32929e0cea131cb956372eff140144a /src/backend/utils/adt/datetime.c | |
| parent | dd39dd232f608fdbaa029992eb6696a04f27459d (diff) | |
| download | postgresql-aa8bdab272b6def93864797a31ebe34814d0f4bb.tar.gz postgresql-aa8bdab272b6def93864797a31ebe34814d0f4bb.zip | |
Attached patch gets rid of the global timezone in the following steps:
* 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
Diffstat (limited to 'src/backend/utils/adt/datetime.c')
| -rw-r--r-- | src/backend/utils/adt/datetime.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/backend/utils/adt/datetime.c b/src/backend/utils/adt/datetime.c index 47dc28d1326..0ac92c304b0 100644 --- a/src/backend/utils/adt/datetime.c +++ b/src/backend/utils/adt/datetime.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/utils/adt/datetime.c,v 1.137 2005/01/11 18:33:45 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/utils/adt/datetime.c,v 1.138 2005/04/19 03:13:59 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -1634,7 +1634,8 @@ DetermineLocalTimeZone(struct pg_tm * tm) res = pg_next_dst_boundary(&prevtime, &before_gmtoff, &before_isdst, &boundary, - &after_gmtoff, &after_isdst); + &after_gmtoff, &after_isdst, + global_timezone); if (res < 0) goto overflow; /* failure? */ |