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Thomas Munro cfdf4dc4fc Add WL_EXIT_ON_PM_DEATH pseudo-event. ... Users of the WaitEventSet and WaitLatch() APIs can now choose between asking for WL_POSTMASTER_DEATH and then handling it explicitly, or asking for WL_EXIT_ON_PM_DEATH to trigger immediate exit on postmaster death. This reduces code duplication, since almost all callers want the latter. Repair all code that was previously ignoring postmaster death completely, or requesting the event but ignoring it, or requesting the event but then doing an unconditional PostmasterIsAlive() call every time through its event loop (which is an expensive syscall on platforms for which we don't have USE_POSTMASTER_DEATH_SIGNAL support). Assert that callers of WaitLatchXXX() under the postmaster remember to ask for either WL_POSTMASTER_DEATH or WL_EXIT_ON_PM_DEATH, to prevent future bugs. The only process that doesn't handle postmaster death is syslogger. It waits until all backends holding the write end of the syslog pipe (including the postmaster) have closed it by exiting, to be sure to capture any parting messages. By using the WaitEventSet API directly it avoids the new assertion, and as a by-product it may be slightly more efficient on platforms that have epoll(). Author: Thomas Munro Reviewed-by: Kyotaro Horiguchi, Heikki Linnakangas, Tom Lane Discussion: https://postgr.es/m/CAEepm%3D1TCviRykkUb69ppWLr_V697rzd1j3eZsRMmbXvETfqbQ%40mail.gmail.com, https://postgr.es/m/CAEepm=2LqHzizbe7muD7-2yHUbTOoF7Q+qkSD5Q41kuhttRTwA@mail.gmail.com		8 years ago
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backend	Add WL_EXIT_ON_PM_DEATH pseudo-event.	8 years ago
bin	Rework the pgbench state machine code for clarity	8 years ago
common	Make spelling of "acknowledgment" consistent	8 years ago
fe_utils	Fix realfailN lexer rules to not make assumptions about input format.	8 years ago
include	Add WL_EXIT_ON_PM_DEATH pseudo-event.	8 years ago
interfaces	Remove WITH OIDS support, change oid catalog column visibility.	8 years ago
makefiles	Refactor installation of extension headers.	8 years ago
pl	Remove WITH OIDS support, change oid catalog column visibility.	8 years ago
port	Disable MSVC warning caused by recent snprintf.c changes	8 years ago
template	Yet further rethinking of build changes for macOS Mojave.	8 years ago
test	Add WL_EXIT_ON_PM_DEATH pseudo-event.	8 years ago
timezone	Sync our copy of the timezone library with IANA release tzcode2018g.	8 years ago
tools	Remove WITH OIDS support, change oid catalog column visibility.	8 years ago
tutorial	Deduplicate "invalid input syntax" messages for various types.	8 years ago
.gitignore	…
DEVELOPERS	…
Makefile	Fix partial-build problems introduced by having more generated headers.	8 years ago
Makefile.global.in	Remove useless symbol from Makefile.global.	8 years ago
Makefile.shlib	Don't build static libraries on Cygwin	8 years ago
nls-global.mk	…