Make WL_POSTMASTER_DEATH level-triggered on kqueue builds.
If WaitEventSetWait() reports that the postmaster has gone away, later
calls to WaitEventSetWait() should continue to report that. Otherwise
further waits that occur in the proc_exit() path after we already
noticed the postmaster's demise could block forever.
Back-patch to 13, where the kqueue support landed.
Reported-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/3624029.1602701929%40sss.pgh.pa.us
Branch
------
REL_13_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/e0950135ae5d50140feecc7bc87c018019c6e406
Modified Files
--------------
src/backend/storage/ipc/latch.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
