Use condition variables for ProcSignalBarriers.
Instead of a poll/sleep loop, use a condition variable for precise
wake-up whenever a backend's pss_barrierGeneration advances.
Discussion: https://postgr.es/m/CA+hUKGLdemy2gBm80kz20GTe6hNVwoErE8KwcJk6-U56oStjtg@mail.gmail.com
Branch
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master
Details
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https://git.postgresql.org/pg/commitdiff/814f1d8bc395bb9b4c0ae090ceea60adfbeb8e49
Modified Files
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src/backend/storage/ipc/procsignal.c | 34 ++++++++++++++--------------------
1 file changed, 14 insertions(+), 20 deletions(-)