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28a591711d
Currently dblink and postgres_fdw don't process interrupts during connection establishment. Besides preventing query cancellations etc, this can lead to undetected deadlocks, as global barriers are not processed. Libpqwalreceiver in contrast, processes interrupts during connection establishment. The required code is not trivial, so duplicating it into additional places does not seem like a good option. These aforementioned undetected deadlocks are the reason for the spate of CI test failures in the FreeBSD 'test_running' step. For now the helper library is just a header, as it needs to be linked into each extension using libpq, and it seems too small to be worth adding a dedicated static library for. The conversion to the helper are done in subsequent commits. Reviewed-by: Thomas Munro <thomas.munro@gmail.com> Discussion: https://postgr.es/m/20220925232237.p6uskba2dw6fnwj2@awork3.anarazel.de |
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