Tom Lane 0a51e7073c Don't take ProcArrayLock while exiting a transaction that has no XID; there is ...

no need for serialization against snapshot-taking because the xact doesn't
affect anyone else's snapshot anyway.  Per discussion.  Also, move various
info about the interlocking of transactions and snapshots out of code comments
and into a hopefully-more-cohesive discussion in access/transam/README.

Also, remove a couple of now-obsolete comments about having to force some WAL
to be written to persuade RecordTransactionCommit to do its thing.

2007-09-07 20:59:26 +00:00

..

buffer

Improve logging of checkpoints. Patch by Greg Smith, worked over

2007-06-30 19:12:02 +00:00

file

Remove FileUnlink(), which wasn't being used anywhere and interacted poorly

2007-07-26 15:15:18 +00:00

freespace

Remove remains of old depend target.

2007-01-20 17:16:17 +00:00

ipc

Don't take ProcArrayLock while exiting a transaction that has no XID; there is

2007-09-07 20:59:26 +00:00

large_object

Add some simple defenses against null fields in pg_largeobject, and add

2007-06-12 19:46:24 +00:00

lmgr

Implement lazy XID allocation: transactions that do not modify any database

2007-09-05 18:10:48 +00:00

page

Suppress useless searches for unused line pointers in PageAddItem. To do

2007-03-02 00:48:44 +00:00

smgr

Implement lazy XID allocation: transactions that do not modify any database

2007-09-05 18:10:48 +00:00

Makefile

Replace useless uses of := by = in makefiles.

2007-02-09 15:56:00 +00:00