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fb276438b6
postgresql/src/include
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Tom Lane fb276438b6 Suppress useless searches for unused line pointers in PageAddItem. To do 
this, add a 16-bit "flags" field to page headers by stealing some bits from
pd_tli.  We use one flag bit as a hint to indicate whether there are any
unused line pointers; the remaining 15 are available for future use.

This is a cut-down form of an idea proposed by Hiroki Kataoka in July 2005.
At the time it was rejected because the original patch increased the size of
page headers and it wasn't clear that the benefit outweighed the distributed
cost.  The flag-bit approach gets most of the benefit without requiring an
increase in the page header size.

Heikki Linnakangas and Tom Lane
2007-03-02 00:48:44 +00:00
..
access Replace direct assignments to VARATT_SIZEP(x) with SET_VARSIZE(x, len). 2007-02-27 23:48:10 +00:00
bootstrap Update CVS HEAD for 2007 copyright. Back branches are typically not 2007-01-05 22:20:05 +00:00
catalog Suppress useless searches for unused line pointers in PageAddItem. To do 2007-03-02 00:48:44 +00:00
commands Remove the Query structure from the executor's API. This allows us to stop 2007-02-20 17:32:18 +00:00
executor Get rid of the separate EState for subplans, and just let them share the 2007-02-27 01:11:26 +00:00
lib Update CVS HEAD for 2007 copyright. Back branches are typically not 2007-01-05 22:20:05 +00:00
libpq Update CVS HEAD for 2007 copyright. Back branches are typically not 2007-01-05 22:20:05 +00:00
mb Fix machine-dependent crash in sqlchar_to_unicode(). Get rid of 2006-12-24 00:57:48 +00:00
nodes Get rid of the separate EState for subplans, and just let them share the 2007-02-27 01:11:26 +00:00
optimizer Turn the rangetable used by the executor into a flat list, and avoid storing 2007-02-22 22:00:26 +00:00
parser Support ORDER BY ... NULLS FIRST/LAST, and add ASC/DESC/NULLS FIRST/NULLS LAST 2007-01-09 02:14:16 +00:00
port On Windows, use pgwin32_waitforsinglesocket() instead of select() to wait for 2007-01-26 20:06:52 +00:00
postmaster Code review for SSLKEY patch. 2007-02-16 17:07:00 +00:00
regex Wording cleanup for error messages. Also change can't -> cannot. 2007-02-01 19:10:30 +00:00
rewrite Update CVS HEAD for 2007 copyright. Back branches are typically not 2007-01-05 22:20:05 +00:00
storage Suppress useless searches for unused line pointers in PageAddItem. To do 2007-03-02 00:48:44 +00:00
tcop Remove the Query structure from the executor's API. This allows us to stop 2007-02-20 17:32:18 +00:00
utils Replace direct assignments to VARATT_SIZEP(x) with SET_VARSIZE(x, len). 2007-02-27 23:48:10 +00:00
c.h Replace direct assignments to VARATT_SIZEP(x) with SET_VARSIZE(x, len). 2007-02-27 23:48:10 +00:00
fmgr.h Update CVS HEAD for 2007 copyright. Back branches are typically not 2007-01-05 22:20:05 +00:00
funcapi.h Update CVS HEAD for 2007 copyright. Back branches are typically not 2007-01-05 22:20:05 +00:00
getaddrinfo.h Update CVS HEAD for 2007 copyright. Back branches are typically not 2007-01-05 22:20:05 +00:00
getopt_long.h Update CVS HEAD for 2007 copyright. Back branches are typically not 2007-01-05 22:20:05 +00:00
Makefile Allow installation into directories containing spaces in the name. 2005-12-09 21:19:36 +00:00
miscadmin.h Fix date/time formats for XML Schema output. 2007-03-01 14:52:04 +00:00
pg_config_manual.h Move BLCKSZ < 1024 check to guc.c. 2007-02-23 21:36:19 +00:00
pg_config.h.in Add configure --enable-profiling to enable GCC profiling. Patches from 2007-02-21 15:12:39 +00:00
pg_config.h.win32 Squelch some VC++ compiler warnings. Mark float literals with the "f" 2007-01-26 17:45:42 +00:00
pg_trace.h pgindent run for 8.2. 2006-10-04 00:30:14 +00:00
pgstat.h Call pgstat_drop_database during DROP DATABASE, so that any stats file 2007-02-09 16:12:19 +00:00
pgtime.h Update CVS HEAD for 2007 copyright. Back branches are typically not 2007-01-05 22:20:05 +00:00
port.h Add strlcat() from OpenBSD, to be used for replacing strncat and other 2007-02-07 00:28:55 +00:00
postgres_ext.h Move NAMEDATALEN definition from postgres_ext.h to pg_config_manual.h. It 2007-02-06 09:16:08 +00:00
postgres_fe.h Update CVS HEAD for 2007 copyright. Back branches are typically not 2007-01-05 22:20:05 +00:00
postgres.h Replace direct assignments to VARATT_SIZEP(x) with SET_VARSIZE(x, len). 2007-02-27 23:48:10 +00:00
rusagestub.h Update CVS HEAD for 2007 copyright. Back branches are typically not 2007-01-05 22:20:05 +00:00