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elog()/ereport() process interrupts, iff the log message is < ERROR and the log message will be emitted. aio's debug messages are emitted via ereport(), but in some places the code is not ready for interrupts to be processed. Fix the issue using a few different methods: 1) handle interrupts arriving concurrently - in some places it's easy to detect that by fetching the handle's generation a bit earlier 2) Check if interrupts made the work needing to be done obsolete 3) Disallow interrupts, as there's no sane way to make interrupt processing safe To prevent some similar issues from being re-introduced, assert that interrupts are held in pgaio_io_update_state(). This commit also fixes the contents of a debug message I added in 039bfc457e4. Reported-by: Alexander Lakhin <exclusion@gmail.com> Reviewed-by: Noah Misch <noah@leadboat.com> Discussion: https://postgr.es/m/mvpm7ga3dfgz7bvum22hmuz26cariylmcppb3irayftc7bwk3r@l7gb6gr7azhc
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.