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postgresql/src/include/utils
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Noah Misch 14c57cb639 For inplace update durability, make heap_update() callers wait. 
The previous commit fixed some ways of losing an inplace update.  It
remained possible to lose one when a backend working toward a
heap_update() copied a tuple into memory just before inplace update of
that tuple.  In catalogs eligible for inplace update, use LOCKTAG_TUPLE
to govern admission to the steps of copying an old tuple, modifying it,
and issuing heap_update().  This includes MERGE commands.  To avoid
changing most of the pg_class DDL, don't require LOCKTAG_TUPLE when
holding a relation lock sufficient to exclude inplace updaters.
Back-patch to v12 (all supported versions).  In v13 and v12, "UPDATE
pg_class" or "UPDATE pg_database" can still lose an inplace update.  The
v14+ UPDATE fix needs commit 86dc90056d,
and it wasn't worth reimplementing that fix without such infrastructure.

Reviewed by Nitin Motiani and (in earlier versions) Heikki Linnakangas.

Discussion: https://postgr.es/m/20231027214946.79.nmisch@google.com
2024-09-24 15:25:24 -07:00
..
.gitignore Revert "Add gitignore entries for jsonpath_gram.h" 2019-03-23 00:19:34 +01:00
acl.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
aclchk_internal.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
array.h Detect integer overflow while computing new array dimensions. 2023-11-06 10:56:43 -05:00
arrayaccess.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
ascii.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
attoptcache.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
builtins.h Fix ordering of XIDs in ProcArrayApplyRecoveryInfo 2022-01-27 20:16:39 +01:00
bytea.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
cash.h Phase 2 of pgindent updates. 2017-06-21 15:19:25 -04:00
catcache.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
combocid.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
date.h Prevent internal overflows in date-vs-timestamp and related comparisons. 2020-10-07 17:10:26 -04:00
datetime.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
datum.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
dsa.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
dynahash.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
elog.h Avoid calling proc_exit() in processes forked by system(). 2023-10-17 10:42:17 -05:00
evtcache.h Fix up recent breakage of headerscheck and cpluspluscheck. 2020-03-21 18:28:44 -04:00
expandeddatum.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
expandedrecord.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
float.h Avoid a performance regression in float overflow/underflow detection. 2020-02-13 13:37:43 -05:00
fmgrtab.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
formatting.h Allow to_date/to_timestamp to recognize non-English month/day names. 2020-03-03 11:06:47 -05:00
freepage.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
geo_decls.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
guc.h Allow adjusting session_authorization and role in parallel workers. 2024-08-10 15:51:28 -04:00
guc_tables.h Be more wary about NULL values for GUC string variables. 2023-11-02 11:47:33 -04:00
help_config.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
hsearch.h Put all the prototypes for hashfn.c into the same header file. 2020-02-24 17:22:45 +05:30
index_selfuncs.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
inet.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
int8.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
inval.h Avoid race in RelationBuildDesc() affecting CREATE INDEX CONCURRENTLY. 2021-10-23 18:36:42 -07:00
json.h Adjust src/include/utils/jsonapi.h so it's not backend-only. 2020-01-24 09:58:37 -08:00
jsonb.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
jsonfuncs.h Move jsonapi.c and jsonapi.h to src/common. 2020-01-29 10:22:51 -05:00
jsonpath.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
logtape.h logtape.c: do not preallocate for tapes when sorting 2020-09-11 17:21:00 -07:00
lsyscache.h Revert "Fix parallel-safety check of expressions and predicate for index builds" 2024-03-07 08:31:09 +09:00
memdebug.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
memutils.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
numeric.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
palloc.h Expand palloc/pg_malloc API for more type safety 2022-09-14 06:08:46 +02:00
partcache.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
pg_crc.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
pg_locale.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
pg_lsn.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
pg_rusage.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
pidfile.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
plancache.h Rearrange validity checks for plpgsql "simple" expressions. 2020-03-27 14:47:34 -04:00
portal.h Update comment in portal.h. 2024-08-01 17:45:08 +09:00
ps_status.h Refactor ps_status.c API 2020-03-11 16:38:31 +01:00
queryenvironment.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
rangetypes.h Initial pgindent and pgperltidy run for v13. 2020-05-14 13:06:50 -04:00
regproc.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
rel.h Make our back branches build under -fkeep-inline-functions. 2023-01-20 11:58:12 -05:00
relcache.h Avoid race in RelationBuildDesc() affecting CREATE INDEX CONCURRENTLY. 2021-10-23 18:36:42 -07:00
relfilenodemap.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
relmapper.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
relptr.h Suppress compiler warning in relptr_store(). 2022-03-26 14:29:48 -04:00
reltrigger.h Enable BEFORE row-level triggers for partitioned tables 2020-03-18 18:58:05 -03:00
resowner.h Improve performance of "simple expressions" in PL/pgSQL. 2020-03-26 18:58:57 -04:00
resowner_private.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
rls.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
ruleutils.h Implement operator class parameters 2020-03-30 19:17:23 +03:00
sampling.h Report progress of ANALYZE commands 2020-01-15 11:14:39 -03:00
selfuncs.h Improve ineq_histogram_selectivity's behavior for non-default orderings. 2020-06-05 16:55:27 -04:00
sharedtuplestore.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
snapmgr.h Fix Portal snapshot tracking to handle subtransactions properly. 2021-10-01 11:10:12 -04:00
snapshot.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
sortsupport.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
spccache.h Introduce a maintenance_io_concurrency setting. 2020-03-16 17:14:26 +13:00
syscache.h For inplace update durability, make heap_update() callers wait. 2024-09-24 15:25:24 -07:00
timeout.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
timestamp.h Fix and simplify some usages of TimestampDifference(). 2020-11-10 22:51:55 -05:00
tuplesort.h Use int64 instead of long in incremental sort code 2020-08-02 14:23:57 +12:00
tuplestore.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
typcache.h Allow ALTER TYPE to change some properties of a base type. 2020-03-06 12:19:29 -05:00
tzparser.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
uuid.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
varbit.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
varlena.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
xid8.h Add SQL type xid8 to expose FullTransactionId to users. 2020-04-07 12:03:59 +12:00
xml.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00