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postgresql/src/include/utils
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Tom Lane 556f7b7bc1 Simplify executor's determination of whether to use parallelism. 
Our parallel-mode code only works when we are executing a query
in full, so ExecutePlan must disable parallel mode when it is
asked to do partial execution.  The previous logic for this
involved passing down a flag (variously named execute_once or
run_once) from callers of ExecutorRun or PortalRun.  This is
overcomplicated, and unsurprisingly some of the callers didn't
get it right, since it requires keeping state that not all of
them have handy; not to mention that the requirements for it were
undocumented.  That led to assertion failures in some corner
cases.  The only state we really need for this is the existing
QueryDesc.already_executed flag, so let's just put all the
responsibility in ExecutePlan.  (It could have been done in
ExecutorRun too, leading to a slightly shorter patch -- but if
there's ever more than one caller of ExecutePlan, it seems better
to have this logic in the subroutine than the callers.)

This makes those ExecutorRun/PortalRun parameters unnecessary.
In master it seems okay to just remove them, returning the
API for those functions to what it was before parallelism.
Such an API break is clearly not okay in stable branches,
but for them we can just leave the parameters in place after
documenting that they do nothing.

Per report from Yugo Nagata, who also reviewed and tested
this patch.  Back-patch to all supported branches.

Discussion: https://postgr.es/m/20241206062549.710dc01cf91224809dd6c0e1@sraoss.co.jp
2024-12-09 14:38:19 -05:00
..
.gitignore Generate automatically code and documentation related to wait events 2023-07-05 10:53:11 +09:00
acl.h Improve tracking of role dependencies of pg_init_privs entries. 2024-06-17 12:55:10 -04:00
aclchk_internal.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
array.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
arrayaccess.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
ascii.h Move is_valid_ascii() to ascii.h. 2024-01-29 12:08:57 -06:00
attoptcache.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
backend_progress.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
backend_status.h Revert "Add notBefore and notAfter to SSL cert info display" 2024-03-22 22:58:41 +01:00
builtins.h Adjust populate_record_field() to handle errors softly 2024-01-24 15:04:33 +09:00
bytea.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
cash.h Convert *GetDatum() and DatumGet*() macros to inline functions 2022-09-27 20:50:21 +02:00
catcache.h Revert "For inplace update, send nontransactional invalidations." 2024-11-02 09:05:00 -07:00
combocid.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
conffiles.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
date.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
datetime.h Support TZ and OF format codes in to_timestamp(). 2024-01-25 17:47:08 -05:00
datum.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
dsa.h Allow specifying initial and maximum segment sizes for DSA. 2024-03-27 11:43:29 +09:00
dynahash.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
elog.h Don't advance origin during apply failure. 2024-08-21 09:08:16 +05:30
evtcache.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
expandeddatum.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
expandedrecord.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
float.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
fmgrtab.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
formatting.h Add SQL/JSON query functions 2024-03-21 17:07:03 +09:00
freepage.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
geo_decls.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
guc.h Allow adjusting session_authorization and role in parallel workers. 2024-08-10 15:51:28 -04:00
guc_hooks.h Restrict accesses to non-system views and foreign tables during pg_dump. 2024-08-05 06:05:30 -07:00
guc_tables.h Rename COMPAT_OPTIONS_CLIENT to COMPAT_OPTIONS_OTHER. 2024-03-27 10:45:28 -04:00
help_config.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
hsearch.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
index_selfuncs.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
inet.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
injection_point.h Fix using injection points at backend startup in EXEC_BACKEND mode 2024-07-26 15:12:12 +03:00
inval.h Revert "For inplace update, send nontransactional invalidations." 2024-11-02 09:05:00 -07:00
json.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
jsonb.h Add SQL/JSON query functions 2024-03-21 17:07:03 +09:00
jsonfuncs.h SQL/JSON: Always coerce JsonExpr result at runtime 2024-06-28 21:58:13 +09:00
jsonpath.h SQL/JSON: Correct jsonpath variable name matching 2024-06-19 15:22:06 +09:00
logtape.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
lsyscache.h ATTACH PARTITION: Don't match a PK with a UNIQUE constraint 2024-04-15 15:07:47 +02:00
memdebug.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
memutils.h Introduce a bump memory allocator 2024-04-08 00:02:43 +12:00
memutils_internal.h Introduce a bump memory allocator 2024-04-08 00:02:43 +12:00
memutils_memorychunk.h Enlarge bit-space for MemoryContextMethodID 2024-04-07 23:32:00 +12:00
meson.build Update copyright for 2024 2024-01-03 20:49:05 -05:00
multirangetypes.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
numeric.h Add functions to generate random numbers in a specified range. 2024-03-27 10:12:39 +00:00
palloc.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
partcache.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
pg_crc.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
pg_locale.h Harmonize function parameter names for Postgres 17. 2024-06-12 17:01:51 -04:00
pg_lsn.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
pg_rusage.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
pgstat_internal.h Fix race conditions with drop of reused pgstats entries 2024-11-15 11:32:13 +09:00
pidfile.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
plancache.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
portal.h Simplify executor's determination of whether to use parallelism. 2024-12-09 14:38:19 -05:00
ps_status.h Speedup and increase usability of set proc title functions 2023-02-20 16:18:27 +13:00
queryenvironment.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
rangetypes.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
regproc.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
rel.h Revert: Allow table AM to store complex data structures in rd_amcache 2024-04-11 16:02:49 +03:00
relcache.h Give SMgrRelation pointers a well-defined lifetime. 2024-01-31 12:31:02 +02:00
relfilenumbermap.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
relmapper.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
relptr.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
reltrigger.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
resowner.h Harmonize function parameter names for Postgres 17. 2024-06-12 17:01:51 -04:00
rls.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
ruleutils.h Revert support for ALTER TABLE ... MERGE/SPLIT PARTITION(S) commands 2024-08-24 19:18:24 +03:00
sampling.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
selfuncs.h Enhance nbtree ScalarArrayOp execution. 2024-04-06 11:47:10 -04:00
sharedtuplestore.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
snapmgr.h Remove GlobalVisTestNonRemovable[Full]Horizon, not used anymore 2024-04-17 11:21:17 -07:00
snapshot.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
sortsupport.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
spccache.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
syscache.h For inplace update durability, make heap_update() callers wait. 2024-09-24 15:25:22 -07:00
timeout.h Introduce transaction_timeout 2024-02-15 23:56:12 +02:00
timestamp.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
tuplesort.h Harmonize function parameter names for Postgres 17. 2024-06-12 17:01:51 -04:00
tuplestore.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
typcache.h Add planner support functions for range operators <@ and @>. 2024-01-20 13:57:54 -05:00
tzparser.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
usercontext.h Perform logical replication actions as the table owner. 2023-04-04 11:25:23 -04:00
uuid.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
varbit.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
varlena.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
wait_event.h Add wait event type "InjectionPoint", a custom type like "Extension". 2024-06-27 19:21:05 -07:00
xid8.h Update copyright for 2024 2024-01-03 20:49:05 -05:00
xml.h Update copyright for 2024 2024-01-03 20:49:05 -05:00