Alvaro Herrera 5da9da71c4 Improve snapshot manager by keeping explicit track of snapshots. ... There are two ways to track a snapshot: there's the "registered" list, which is used for arbitrary long-lived snapshots; and there's the "active stack", which is used for the snapshot that is considered "active" at any time. This also allows users of snapshots to stop worrying about snapshot memory allocation and freeing, and about using PG_TRY blocks around ActiveSnapshot assignment. This is all done automatically now. As a consequence, this allows us to reset MyProc->xmin when there are no more snapshots registered in the current backend, reducing the impact that long-running transactions have on VACUUM.		2008-05-12 20:02:02 +00:00
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adt	Improve snapshot manager by keeping explicit track of snapshots.	2008-05-12 20:02:02 +00:00
cache	Improve snapshot manager by keeping explicit track of snapshots.	2008-05-12 20:02:02 +00:00
error	Add a new ereport auxiliary function errdetail_log(), which works the same as	2008-03-24 18:08:47 +00:00
fmgr	Restructure some header files a bit, in particular heapam.h, by removing some	2008-05-12 00:00:54 +00:00
hash	Reduce the need for frontend programs to include "postgres.h" by refactoring	2008-03-27 03:57:34 +00:00
init	Restructure some header files a bit, in particular heapam.h, by removing some	2008-05-12 00:00:54 +00:00
mb	Clean up a few places where Datums were being treated as pointers without	2008-04-12 23:21:04 +00:00
misc	Convert wal_sync_method to guc enum.	2008-05-12 08:35:05 +00:00
mmgr	Restructure some header files a bit, in particular heapam.h, by removing some	2008-05-12 00:00:54 +00:00
resowner	Restructure some header files a bit, in particular heapam.h, by removing some	2008-05-12 00:00:54 +00:00
sort	Restructure some header files a bit, in particular heapam.h, by removing some	2008-05-12 00:00:54 +00:00
time	Improve snapshot manager by keeping explicit track of snapshots.	2008-05-12 20:02:02 +00:00
.cvsignore	Cleanup to ensure good state of derived files in tarballs.	2000-06-09 02:38:36 +00:00
Gen_dummy_probes.sed	Enable probes to work with Mac OS X Leopard and other OSes that will	2008-03-17 19:44:41 +00:00
Gen_fmgrtab.sh	Make the AWK default value also take effect if $AWK is an empty string.	2008-05-02 14:16:24 +00:00
Makefile	Enable probes to work with Mac OS X Leopard and other OSes that will	2008-03-17 19:44:41 +00:00
probes.d	Correct two more copyrights found by updated script.	2008-01-02 02:42:06 +00:00