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Andres Freund f4e484dd00 Have walsenders participate in procsignal infrastructure. 
The non-participation in procsignal was a problem for both changes in
master, e.g. parallelism not working for normal statements run in
walsender backends, and older branches, e.g. recovery conflicts and
catchup interrupts not working for logical decoding walsenders.

This commit thus replaces the previous WalSndXLogSendHandler with
procsignal_sigusr1_handler.  In branches since db0f6cad48 that can
lead to additional SetLatch calls, but that only rarely seems to make
a difference.

Author: Andres Freund
Reviewed-By: Michael Paquier
Discussion: https://postgr.es/m/20170421014030.fdzvvvbrz4nckrow@alap3.anarazel.de
Backpatch: 9.4, earlier commits don't seem to benefit sufficiently
2017-06-05 19:18:16 -07:00
..
backend Have walsenders participate in procsignal infrastructure. 2017-06-05 19:18:16 -07:00
bin Prevent running pg_resetwal/pg_resetxlog against wrong-version data dirs. 2017-05-29 17:08:16 -04:00
common Unlink static libraries before rebuilding them. 2015-03-01 13:06:33 -05:00
include Fix race condition leading to hanging logical slot creation. 2017-05-13 14:21:00 -07:00
interfaces Stamp 9.4.12. 2017-05-08 17:19:04 -04:00
makefiles Always use -fPIC, not -fpic, when building shared libraries with gcc. 2017-06-01 13:32:56 -04:00
pl Translation updates 2017-05-08 10:15:23 -04:00
port Stamp 9.4.12. 2017-05-08 17:19:04 -04:00
template AIX: Test the -qlonglong option before use. 2015-07-17 03:01:35 -04:00
test Move autogenerated array types out of the way during ALTER ... RENAME. 2017-05-26 15:16:59 -04:00
timezone Fix new warnings from GCC 7 2017-05-15 13:31:42 -04:00
tools Fix thinko in previous openssl change 2017-06-05 20:40:27 -04:00
tutorial pgindent run for 9.4 2014-05-06 12:12:18 -04:00
.gitignore Convert cvsignore to gitignore, and add .gitignore for build targets. 2010-09-22 12:57:04 +02:00
bcc32.mak Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
DEVELOPERS Replace a couple of references to files that no longer exist in the source 2009-05-04 08:08:47 +00:00
Makefile Install TAP test infrastructure so it's available for extension testing. 2016-09-23 15:50:00 -04:00
Makefile.global.in Honor PROVE_FLAGS environment setting 2017-05-12 11:27:56 -04:00
Makefile.shlib Fix typos in comments. 2017-02-06 11:34:24 +02:00
nls-global.mk nls-global.mk: search build dir for source files, too 2016-06-07 18:55:18 -04:00
win32.mak Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00