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Alvaro Herrera d43b085d57 Separate snapshot management code from tuple visibility code, create a 
snapmgmt.c file for the former.  The header files have also been reorganized
in three parts: the most basic snapshot definitions are now in a new file
snapshot.h, and the also new snapmgmt.h keeps the definitions for snapmgmt.c.
tqual.h has been reduced to the bare minimum.

This patch is just a first step towards managing live snapshots within a
transaction; there is no functionality change.

Per my proposal to pgsql-patches on 20080318191940.GB27458@alvh.no-ip.org and
subsequent discussion.
 		2008-03-26 16:20:48 +00:00
..
attnum.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
clog.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
genam.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
gin.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
gist.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
gist_private.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
gistscan.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
hash.h When creating a large hash index, pre-sort the index entries by estimated 2008-03-16 23:15:08 +00:00
heapam.h Refactor heap_page_prune so that instead of changing item states on-the-fly, 2008-03-08 21:57:59 +00:00
hio.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
htup.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
itup.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
multixact.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
nbtree.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
printtup.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
reloptions.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
relscan.h Separate snapshot management code from tuple visibility code, create a 2008-03-26 16:20:48 +00:00
rewriteheap.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
rmgr.h Fix recently-understood problems with handling of XID freezing, particularly 2006-11-05 22:42:10 +00:00
sdir.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
skey.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
slru.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
subtrans.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
transam.h Make TransactionIdIsInProgress check transam.c's single-item XID status cache 2008-03-11 20:20:35 +00:00
tupdesc.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
tupmacs.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
tuptoaster.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
twophase.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
twophase_rmgr.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
valid.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
xact.h Fix PREPARE TRANSACTION to reject the case where the transaction has dropped a 2008-03-04 19:54:06 +00:00
xlog.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
xlog_internal.h Replace time_t with pg_time_t (same values, but always int64) in on-disk 2008-02-17 02:09:32 +00:00
xlogdefs.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
xlogutils.h Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00