Forward received condition variable signals on cancel.
After a process decides not to wait for a condition variable, it can
still consume a signal before it reaches ConditionVariableCancelSleep().
In that case, pass the signal on to another waiter if possible, so that
a signal doesn't go missing when there is another process ready to
receive it.
Author: Thomas Munro
Reviewed-by: Shawn Debnath
Discussion: https://postgr.es/m/CA%2BhUKGLQ_RW%2BXs8znDn36e-%2Bmq2--zrPemBqTQ8eKT-VO1OF4Q%40mail.gmail.com
Branch
------
master
Details
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https://git.postgresql.org/pg/commitdiff/b91dd9de5ea0839d0d248ebbe8cb926c3df52c7c
Modified Files
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src/backend/storage/lmgr/condition_variable.c | 11 +++++++++++
1 file changed, 11 insertions(+)
