Re: Threading in BGWorkers (!)

> Using multithreading in bgworker is possible if you do not use any
> Postgres runtime inside thread procedures or do it in exclusive critical
> section.
> It is not so convenient but possible. The most difficult thing from my
> point of view is error reporting.
>

Happy to be proved wrong, but I don't think this is correct.

PostgreSQL can call sigprocmask() in your BGWorker whenever it wants, and
"The use of sigprocmask() is unspecified in a multithreaded process" [1]

[1] https://pubs.opengroup.org/onlinepubs/9699919799/

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