Horton

libpq-be-fe-helpers.h: wrap new cancel APIs

Alvaro Herrera <alvherre@alvh.no-ip.org>

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Commit: 2466d6654f85d7ec136d09d52ae22771452a19df
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Date: 2024-03-28T10:31:03Z
Releases: 17.0 
libpq-be-fe-helpers.h: wrap new cancel APIs

Commit 61461a300c1c introduced new functions to libpq for cancelling
queries.  This commit introduces a helper function that backend-side
libraries and extensions can use to invoke those.  This function takes a
timeout and can itself be interrupted while it is waiting for a cancel
request to be sent and processed, instead of being blocked.

This replaces the usage of the old functions in postgres_fdw and dblink.

Finally, it also adds some test coverage for the cancel support in
postgres_fdw.

Author: Jelte Fennema-Nio <postgres@jeltef.nl>
Discussion: https://postgr.es/m/CAGECzQT_VgOWWENUqvUV9xQmbaCyXjtRRAYO8W07oqashk_N+g@mail.gmail.com

Files

PathChange+/−
contrib/dblink/dblink.c modified +6 −15
contrib/postgres_fdw/connection.c modified +23 −24
contrib/postgres_fdw/expected/postgres_fdw.out modified +15 −0
contrib/postgres_fdw/sql/postgres_fdw.sql modified +7 −0
src/include/libpq/libpq-be-fe-helpers.h modified +89 −0

Discussion