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 <postg...@jeltef.nl> Discussion: https://postgr.es/m/cageczqt_vgowwenuqvuv9xqmbacyxjtrrayo8w07oqashk_...@mail.gmail.com Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/2466d6654f85d7ec136d09d52ae22771452a19df Modified Files -------------- contrib/dblink/dblink.c | 21 ++---- contrib/postgres_fdw/connection.c | 47 +++++++------- contrib/postgres_fdw/expected/postgres_fdw.out | 15 +++++ contrib/postgres_fdw/sql/postgres_fdw.sql | 7 ++ src/include/libpq/libpq-be-fe-helpers.h | 89 ++++++++++++++++++++++++++ 5 files changed, 140 insertions(+), 39 deletions(-)
