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Peter Geoghegan 4ce3afb82e Refactor how VACUUM passes around its XID cutoffs. 
Use a dedicated struct for the XID/MXID cutoffs used by VACUUM, such as
FreezeLimit and OldestXmin.  This state is initialized in vacuum.c, and
then passed around by code from vacuumlazy.c to heapam.c freezing
related routines.  The new convention is that everybody works off of the
same cutoff state, which is passed around via pointers to const.

Also simplify some of the logic for dealing with frozen xmin in
heap_prepare_freeze_tuple: add dedicated "xmin_already_frozen" state to
clearly distinguish xmin XIDs that we're going to freeze from those that
were already frozen from before.  That way the routine's xmin handling
code is symmetrical with the existing xmax handling code.  This is
preparation for an upcoming commit that will add page level freezing.

Also refactor the control flow within FreezeMultiXactId(), while adding
stricter sanity checks.  We now test OldestXmin directly, instead of
using FreezeLimit as an inexact proxy for OldestXmin.  This is further
preparation for the page level freezing work, which will make the
function's caller cede control of page level freezing to the function
where appropriate (where heap_prepare_freeze_tuple sees a tuple that
happens to contain a MultiXactId in its xmax).

Author: Peter Geoghegan <pg@bowt.ie>
Reviewed-By: Jeff Davis <pgsql@j-davis.com>
Discussion: https://postgr.es/m/CAH2-WznS9TxXmz2_=SY+SyJyDFbiOftKofM9=aDo68BbXNBUMA@mail.gmail.com
2022-12-22 09:37:59 -08:00
..
amapi.h Revert changes in HOT handling of BRIN indexes 2022-06-16 15:02:49 +02:00
amvalidate.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
attmap.h Add 'missing_ok' argument to build_attrmap_by_name 2022-11-29 09:39:36 +01:00
attnum.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
brin.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
brin_internal.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
brin_page.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
brin_pageops.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
brin_revmap.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
brin_tuple.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
brin_xlog.h Change internal RelFileNode references to RelFileNumber or RelFileLocator. 2022-07-06 11:39:09 -04:00
bufmask.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
clog.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
commit_ts.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
detoast.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
genam.h Harmonize parameter names in storage and AM code. 2022-09-19 19:18:36 -07:00
generic_xlog.h Harmonize parameter names in storage and AM code. 2022-09-19 19:18:36 -07:00
gin.h Static assertions cleanup 2022-12-15 10:10:32 +01:00
gin_private.h Harmonize parameter names in storage and AM code. 2022-09-19 19:18:36 -07:00
ginblock.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
ginxlog.h Change internal RelFileNode references to RelFileNumber or RelFileLocator. 2022-07-06 11:39:09 -04:00
gist.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
gist_private.h Standardize rmgrdesc recovery conflict XID output. 2022-11-17 14:55:08 -08:00
gistscan.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
gistxlog.h Standardize rmgrdesc recovery conflict XID output. 2022-11-17 14:55:08 -08:00
hash.h Speedup hash index builds by skipping needless binary searches 2022-11-24 17:21:44 +13:00
hash_xlog.h Standardize rmgrdesc recovery conflict XID output. 2022-11-17 14:55:08 -08:00
heapam.h Refactor how VACUUM passes around its XID cutoffs. 2022-12-22 09:37:59 -08:00
heapam_xlog.h Standardize rmgrdesc recovery conflict XID output. 2022-11-17 14:55:08 -08:00
heaptoast.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
hio.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
htup.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
htup_details.h Static assertions cleanup 2022-12-15 10:10:32 +01:00
itup.h Convert macros to static inline functions (itup.h) 2022-07-19 07:24:55 +02:00
multixact.h Harmonize heapam and tableam parameter names. 2022-09-19 16:46:23 -07:00
nbtree.h Static assertions cleanup 2022-12-15 10:10:32 +01:00
nbtxlog.h Standardize rmgrdesc recovery conflict XID output. 2022-11-17 14:55:08 -08:00
parallel.h Mark ParallelMessagePending as sig_atomic_t 2022-09-27 09:29:56 +09:00
printsimple.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
printtup.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
relation.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
reloptions.h Harmonize parameter names in storage and AM code. 2022-09-19 19:18:36 -07:00
relscan.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
rewriteheap.h Harmonize heapam and tableam parameter names. 2022-09-19 16:46:23 -07:00
rmgr.h Pre-beta mechanical code beautification. 2022-05-12 15:17:30 -04:00
rmgrlist.h Update the comment in rmgrlist.h to match it to the code. 2022-08-30 09:16:41 +05:30
sdir.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
session.h Apply PGDLLIMPORT markings broadly. 2022-04-08 08:16:38 -04:00
skey.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
slru.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
spgist.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
spgist_private.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
spgxlog.h Standardize rmgrdesc recovery conflict XID output. 2022-11-17 14:55:08 -08:00
stratnum.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
subtrans.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
syncscan.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
sysattr.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
table.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
tableam.h Refactor how VACUUM passes around its XID cutoffs. 2022-12-22 09:37:59 -08:00
timeline.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
toast_compression.h Apply PGDLLIMPORT markings broadly. 2022-04-08 08:16:38 -04:00
toast_helper.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
toast_internals.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
transam.h Revert 56-bit relfilenode change and follow-up commits. 2022-09-28 09:55:28 -04:00
tsmapi.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
tupconvert.h Generalize ri_RootToPartitionMap to use for non-partition children 2022-12-02 10:35:55 +01:00
tupdesc.h Harmonize parameter names in storage and AM code. 2022-09-19 19:18:36 -07:00
tupdesc_details.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
tupmacs.h Convert macros to static inline functions (tupmacs.h) 2022-07-18 08:01:27 +02:00
twophase.h Harmonize parameter names in storage and AM code. 2022-09-19 19:18:36 -07:00
twophase_rmgr.h Apply PGDLLIMPORT markings broadly. 2022-04-08 08:16:38 -04:00
valid.h Turn HeapKeyTest macro into inline function 2022-11-16 13:26:48 +01:00
visibilitymap.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
visibilitymapdefs.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
xact.h Rethink handling of [Prevent|Is]InTransactionBlock in pipeline mode. 2022-12-13 14:23:58 -05:00
xlog.h Reduce xlog.h inclusion footprint 2022-10-12 09:47:11 +02:00
xlog_internal.h Mark argument of RegisterCustomRmgr() as const. 2022-11-15 16:01:35 -08:00
xlogarchive.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
xlogbackup.h Remove dependency to StringInfo in xlogbackup.{c.h} 2022-09-27 09:15:07 +09:00
xlogdefs.h Remove configure probe for fdatasync. 2022-08-05 16:37:38 +12:00
xloginsert.h Harmonize parameter names in storage and AM code. 2022-09-19 19:18:36 -07:00
xlogprefetcher.h Apply PGDLLIMPORT markings broadly. 2022-04-08 08:16:38 -04:00
xlogreader.h Restore pg_pread and friends. 2022-09-29 13:12:11 +13:00
xlogrecord.h Change internal RelFileNode references to RelFileNumber or RelFileLocator. 2022-07-06 11:39:09 -04:00
xlogrecovery.h Remove promote_trigger_file. 2022-11-29 12:08:38 +13:00
xlogstats.h Pre-beta mechanical code beautification. 2022-05-12 15:17:30 -04:00
xlogutils.h Harmonize parameter names in storage and AM code. 2022-09-19 19:18:36 -07:00