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postgresql/src/include/access
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Alvaro Herrera b060dbe000
Rework XLogReader callback system 
Code review for 0dc8ead463, prompted by a bug closed by 91c40548d5.

XLogReader's system for opening and closing segments had gotten too
complicated, with callbacks being passed at both the XLogReaderAllocate
level (read_page) as well as at the WALRead level (segment_open).  This
was confusing and hard to follow, so restructure things so that these
callbacks are passed together at XLogReaderAllocate time, and add
another callback to the set (segment_close) to make it a coherent whole.
Also, ensure XLogReaderState is an argument to all the callbacks, so
that they can grab at the ->private data if necessary.

Document the whole arrangement more clearly.

Author: Álvaro Herrera <alvherre@alvh.no-ip.org>
Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Discussion: https://postgr.es/m/20200422175754.GA19858@alvherre.pgsql
2020-05-08 15:40:11 -04:00
..
amapi.h Implement operator class parameters 2020-03-30 19:17:23 +03:00
amvalidate.h Implement operator class parameters 2020-03-30 19:17:23 +03:00
attmap.h Fix assorted typos 2020-03-31 16:00:06 +02:00
attnum.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
brin_internal.h Implement operator class parameters 2020-03-30 19:17:23 +03:00
brin_page.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
brin_pageops.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
brin_revmap.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
brin_tuple.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
brin_xlog.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
brin.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
bufmask.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
clog.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
commit_ts.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
detoast.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
genam.h Implement operator class parameters 2020-03-30 19:17:23 +03:00
generic_xlog.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
gin_private.h Avoid full scan of GIN indexes when possible 2020-01-18 01:11:39 +03:00
gin.h Implement operator class parameters 2020-03-30 19:17:23 +03:00
ginblock.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
ginxlog.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
gist_private.h Skip WAL for new relfilenodes, under wal_level=minimal. 2020-04-04 12:25:34 -07:00
gist.h Implement operator class parameters 2020-03-30 19:17:23 +03:00
gistscan.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
gistxlog.h Skip WAL for new relfilenodes, under wal_level=minimal. 2020-04-04 12:25:34 -07:00
hash_xlog.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
hash.h Get rid of trailing semicolons in C macro definitions. 2020-05-01 17:28:00 -04:00
heapam_xlog.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
heapam.h Skip WAL for new relfilenodes, under wal_level=minimal. 2020-04-04 12:25:34 -07:00
heaptoast.h tableam: New callback relation_fetch_toast_slice. 2020-01-07 14:36:38 -05:00
hio.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
htup_details.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
htup.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
itup.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
multixact.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
nbtree.h Normalize _bt_findsplitloc() argument names. 2020-05-05 14:42:10 -07:00
nbtxlog.h Harmonize nbtree page split point code. 2020-04-13 16:39:55 -07:00
parallel.h Allow vacuum command to process indexes in parallel. 2020-01-20 07:57:49 +05:30
printsimple.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
printtup.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
relation.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
reloptions.h Implement operator class parameters 2020-03-30 19:17:23 +03:00
relscan.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
rewriteheap.h Skip WAL for new relfilenodes, under wal_level=minimal. 2020-04-04 12:25:34 -07:00
rmgr.h
rmgrlist.h Add deduplication to nbtree. 2020-02-26 13:05:30 -08:00
sdir.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
session.h Fix typo. 2020-01-13 14:44:55 +05:30
skey.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
slru.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
spgist_private.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
spgist.h Implement operator class parameters 2020-03-30 19:17:23 +03:00
spgxlog.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
stratnum.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
subtrans.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
sysattr.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
table.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
tableam.h Skip WAL for new relfilenodes, under wal_level=minimal. 2020-04-04 12:25:34 -07:00
timeline.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
toast_helper.h Introduce macros for typalign and typstorage constants. 2020-03-04 10:34:25 -05:00
toast_internals.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
transam.h Add SQL type xid8 to expose FullTransactionId to users. 2020-04-07 12:03:59 +12:00
tsmapi.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
tupconvert.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
tupdesc_details.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
tupdesc.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
tupmacs.h Introduce macros for typalign and typstorage constants. 2020-03-04 10:34:25 -05:00
twophase_rmgr.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
twophase.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
valid.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
visibilitymap.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
xact.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
xlog_internal.h Skip WAL for new relfilenodes, under wal_level=minimal. 2020-04-04 12:25:34 -07:00
xlog.h Change the display of WAL usage statistics in Explain. 2020-05-05 08:00:53 +05:30
xlogarchive.h Move routine definitions of xlogarchive.c to a new header file 2020-03-31 15:33:04 +09:00
xlogdefs.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
xloginsert.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
xlogreader.h Rework XLogReader callback system 2020-05-08 15:40:11 -04:00
xlogrecord.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
xlogutils.h Rework XLogReader callback system 2020-05-08 15:40:11 -04:00