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postgresql/src/include/storage
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Robert Haas 10ea0f924a Expose some information about backend subxact status. 
A new function pg_stat_get_backend_subxact() can be used to get
information about the number of subtransactions in the cache of
a particular backend and whether that cache has overflowed. This
can be useful for tracking down performance problems that can
result from overflowed snapshots.

Dilip Kumar, reviewed by Zhihong Yu, Nikolay Samokhvalov,
Justin Pryzby, Nathan Bossart, Ashutosh Sharma, Julien
Rouhaud. Additional design comments from Andres Freund,
Tom Lane, Bruce Momjian, and David G. Johnston.

Discussion: http://postgr.es/m/CAFiTN-ut0uwkRJDQJeDPXpVyTWD46m3gt3JDToE02hTfONEN=Q@mail.gmail.com
2022-12-19 14:43:09 -05:00
..
.gitignore When trace_lwlocks is used, identify individual lwlocks by name. 2015-09-11 14:01:39 -04:00
backendid.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
barrier.h Harmonize parameter names in storage and AM code. 2022-09-19 19:18:36 -07:00
block.h Convert macros to static inline functions (block.h) 2022-07-07 08:36:51 +02:00
buf.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
buf_internals.h Revert 56-bit relfilenode change and follow-up commits. 2022-09-28 09:55:28 -04:00
buffile.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
bufmgr.h Clean up some inconsistencies with GUC declarations 2022-10-31 12:44:48 +09:00
bufpage.h Harmonize parameter names in storage and AM code. 2022-09-19 19:18:36 -07:00
checksum.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
checksum_impl.h Convert macros to static inline functions (bufpage.h) 2022-07-11 07:21:52 +02:00
condition_variable.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
copydir.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
dsm.h Harmonize parameter names in storage and AM code. 2022-09-19 19:18:36 -07:00
dsm_impl.h Apply PGDLLIMPORT markings broadly. 2022-04-08 08:16:38 -04:00
fd.h Update types in File API 2022-12-08 08:58:15 +01:00
fileset.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
freespace.h Change internal RelFileNode references to RelFileNumber or RelFileLocator. 2022-07-06 11:39:09 -04:00
fsm_internals.h Harmonize parameter names in storage and AM code. 2022-09-19 19:18:36 -07:00
indexfsm.h Harmonize parameter names in storage and AM code. 2022-09-19 19:18:36 -07:00
ipc.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
item.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
itemid.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
itemptr.h Convert macros to static inline functions (itemptr.h) 2022-07-13 14:47:36 +02:00
large_object.h Apply PGDLLIMPORT markings broadly. 2022-04-08 08:16:38 -04:00
latch.h Pre-beta mechanical code beautification. 2022-05-12 15:17:30 -04:00
lmgr.h Add new block-by-block strategy for CREATE DATABASE. 2022-03-29 11:48:36 -04:00
lock.h Apply PGDLLIMPORT markings broadly. 2022-04-08 08:16:38 -04:00
lockdefs.h Add missing space in comments. 2022-07-21 16:25:07 +05:30
lwlock.h Static assertions cleanup 2022-12-15 10:10:32 +01:00
md.h Change internal RelFileNode references to RelFileNumber or RelFileLocator. 2022-07-06 11:39:09 -04:00
meson.build meson: Add initial version of meson based build system 2022-09-21 22:37:17 -07:00
off.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
pg_sema.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
pg_shmem.h Apply PGDLLIMPORT markings broadly. 2022-04-08 08:16:38 -04:00
pmsignal.h Apply PGDLLIMPORT markings broadly. 2022-04-08 08:16:38 -04:00
predicate.h Harmonize parameter names in storage and AM code. 2022-09-19 19:18:36 -07:00
predicate_internals.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
proc.h lwlock: Fix quadratic behavior with very long wait lists 2022-11-20 11:56:32 -08:00
procarray.h Improve heuristics for compressing the KnownAssignedXids array. 2022-11-29 15:43:17 -05:00
proclist.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
proclist_types.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
procsignal.h Fix DROP {DATABASE,TABLESPACE} on Windows. 2022-02-12 10:21:23 +13:00
reinit.h Clean up some residual confusion between OIDs and RelFileNumbers. 2022-07-28 10:20:29 -04:00
relfilelocator.h Revert 56-bit relfilenode change and follow-up commits. 2022-09-28 09:55:28 -04:00
s_lock.h Allow use of __sync_lock_test_and_set for spinlocks on any machine. 2022-11-02 17:37:29 -04:00
sharedfileset.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
shm_mq.h shm_mq_sendv: Fix flushing bug when receiver not yet attached. 2022-05-31 08:46:54 -04:00
shm_toc.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
shmem.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
sinval.h Revert 56-bit relfilenode change and follow-up commits. 2022-09-28 09:55:28 -04:00
sinvaladt.h Expose some information about backend subxact status. 2022-12-19 14:43:09 -05:00
smgr.h Change internal RelFileNode references to RelFileNumber or RelFileLocator. 2022-07-06 11:39:09 -04:00
spin.h Apply PGDLLIMPORT markings broadly. 2022-04-08 08:16:38 -04:00
standby.h Standardize rmgrdesc recovery conflict XID output. 2022-11-17 14:55:08 -08:00
standbydefs.h Update copyright for 2022 2022-01-07 19:04:57 -05:00
sync.h Change internal RelFileNode references to RelFileNumber or RelFileLocator. 2022-07-06 11:39:09 -04:00