Tom Lane bb446b689b Support synchronization of snapshots through an export/import procedure. ... A transaction can export a snapshot with pg_export_snapshot(), and then others can import it with SET TRANSACTION SNAPSHOT. The data does not leave the server so there are not security issues. A snapshot can only be imported while the exporting transaction is still running, and there are some other restrictions. I'm not totally convinced that we've covered all the bases for SSI (true serializable) mode, but it works fine for lesser isolation modes. Joachim Wieland, reviewed by Marko Tiikkaja, and rather heavily modified by Tom Lane		2011-10-22 18:23:30 -04:00
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backendid.h	pgindent run before PG 9.1 beta 1.	2011-04-10 11:42:00 -04:00
barrier.h	Fix typo.	2011-10-08 11:04:07 +03:00
block.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
buf.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
buf_internals.h	pgindent run before PG 9.1 beta 1.	2011-04-10 11:42:00 -04:00
buffile.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
bufmgr.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
bufpage.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
copydir.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
fd.h	Use "transient" files for blind writes, take 2	2011-06-10 13:43:02 -04:00
freespace.h	Remove unnecessary #include references, per pgrminclude script.	2011-09-01 10:04:27 -04:00
fsm_internals.h	Remove unnecessary #include references, per pgrminclude script.	2011-09-01 10:04:27 -04:00
indexfsm.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
ipc.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
item.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
itemid.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
itemptr.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
large_object.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
latch.h	Documentation improvement and minor code cleanups for the latch facility.	2011-08-09 15:30:45 -04:00
lmgr.h	Create VXID locks "lazily" in the main lock table.	2011-08-04 12:38:33 -04:00
lock.h	Remove all "traces" of trace_userlocks, because userlocks were removed	2011-10-13 19:59:57 -04:00
lwlock.h	Efficient transaction-controlled synchronous replication.	2011-03-06 22:49:16 +00:00
off.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
pg_sema.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
pg_shmem.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
pmsignal.h	Introduce a pipe between postmaster and each backend, which can be used to	2011-07-08 18:44:07 +03:00
pos.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
predicate.h	Support synchronization of snapshots through an export/import procedure.	2011-10-22 18:23:30 -04:00
predicate_internals.h	SSI has a race condition, where the order of commit sequence numbers of	2011-07-07 23:26:34 +03:00
proc.h	Move Timestamp/Interval typedefs and basic macros into datatype/timestamp.h.	2011-09-09 13:23:41 -04:00
procarray.h	Support synchronization of snapshots through an export/import procedure.	2011-10-22 18:23:30 -04:00
procsignal.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
reinit.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
relfilenode.h	pgindent run before PG 9.1 beta 1.	2011-04-10 11:42:00 -04:00
s_lock.h	Use a non-locking test in TAS_SPIN() on all IA64 platforms.	2011-08-29 13:18:44 -04:00
shmem.h	Increase SHMEM_INDEX_SIZE from 32 to 64. We're currently at 40 entries in	2011-03-31 13:37:01 +03:00
sinval.h	Revise sinval code to remove no-longer-used tuple TID from inval messages.	2011-08-16 19:27:46 -04:00
sinvaladt.h	Create VXID locks "lazily" in the main lock table.	2011-08-04 12:38:33 -04:00
smgr.h	Remove unnecessary #include references, per pgrminclude script.	2011-09-01 10:04:27 -04:00
spin.h	Stamp copyrights for year 2011.	2011-01-01 13:18:15 -05:00
standby.h	Clean up the #include mess a little.	2011-09-04 01:13:16 -04:00