Call to `teardown_pool` hangs

[mbarbin]

Hi and thanks for the library!

I am opening this issue a bit early, as I haven't minimized the problem I have, in the hope maybe someone will be able to give me some pointers. I suspect I am likely using the library incorrectly.

I am setting up a pool with Stdlib.Domain.recommended_domain_count () - 1, then use it with a call to Domainslib.Task.run, and outside of run, end with a call Domainslib.Task.teardown_pool.

The call to teardown_pool hangs, with a top -p PID showing 0% cpu. Moreover, when in that state, Ctrl+C does not terminates the program (kill -9 does).

If I remove the call to teardown_pool, my program terminates normally, having performed all the expected tasks.

Out of an incorrect hunch, I tried to see if the teardown_pool needed to be done from inside the run rather, but this raised failwith "Task.run: tasks are active on pool" so I suspect this is not the right direction.

I should try and reproduce on a smaller example, but meanwhile, is there some known issue / challenges for beginners in the way to use the lib incorrectly that would cause the teardown to hang?

Thanks for your help!