before we can invoke fork() -- flush stdio buffers, save and restore the
profiling timer on Linux with LINUX_PROFILE, and handle BeOS stuff. This
patch moves that code into a single function, fork_process(), instead of
duplicating it at the various callsites of fork().

This patch doesn't address the EXEC_BACKEND case; there is room for
further cleanup there.

feature for Win32 and bcc.

number of palloc calls.  This has a salutory impact on plpgsql operations
with record variables (which create and destroy tupdescs constantly)
and probably helps a bit in some other cases too.

	UNICODE => UTF8
	ALT => WIN866
	WIN => WIN1251
	TCVN => WIN1258

The old codes continue to work.

Too much space is allocated for tablespace file path, I guess the
directory name used to be "pg_tablespaces" instead of "pg_tblspc" at
some point.

Heikki Linnakangas

by non-default planner parameter settings.

on-the-fly, and thereby avoid blowing out memory when the planner has
underestimated the hash table size.  Hash join will now obey the
work_mem limit with some faithfulness.  Per my recent proposal
(hash aggregate part isn't done yet though).

the freelist, plus per-buffer spinlocks that protect access to individual
shared buffer headers.  This requires abandoning a global freelist (since
the freelist is a global contention point), which shoots down ARC and 2Q
as well as plain LRU management.  Adopt a clock sweep algorithm instead.
Preliminary results show substantial improvement in multi-backend situations.

Allocated size based on format string.

of AND and OR clauses.  The key point here is that an OR on the
predicate side has to be treated gingerly: we may be able to prove
that the OR is implied even when no one of its components is implied.
For example (x OR y) implies (x OR y OR z) even though no one of x,
y, or z can be individually proven.  This code handles both the
example shown recently by Sergey Koshcheyev and the one shown last
October by Dawid Kuroczko.

 *  If vsnprintf() is not before snprintf() in this file, snprintf()
 *  will call the system vsnprintf() on MinGW.

no held locks.  This maintains the invariant that proclocks are present
only for procs that are holding or awaiting a lock; when this is not
true, LockRelease will fail.  Per report from Stephen Clouse.

representation of not wanting tracing to be limited by object OID.

defining its own.

> * -Make src/port/snprintf.c thread-safe

indexscans involving partial indexes.  These would always be dominated
by a simple indexscan on such an index, so there's no point in considering
them.  Fixes overoptimism in a patch I applied last October.

changes to make snprintf() vsnprintf() and printf()
functions in src/port/snprintf.c thread-safe.

Nicolai Tufar

it was in 7.4, and add some comments explaining why it has to be this way.
I broke it for OR'd index predicates in a fit of code cleanup last summer.
Per example from Sergey Koshcheyev.

its output can be used to select the proper printf outputs.

Magnus Hagander

Iijima, reviewed by Neil Conway. Catalog version number bumped,
regression tests updated.

follows:

Magnus Hagander

consistency.  Backpatch only bcc32.mak to 8.0.X.

editorializing by Neil Conway. Catalog version bumped.