Does the underlying __io_uring_get_cqe function allow interruption via signals?

[kevincianfarini]

I'm hoping to be able to interrupt a thread that polling for completion events with pthread_kill. I see that io_uring_wait_cqe passes a null pointer for a sigmask to the underlying __io_uring_get_cqe. Is there any harm in using that function which exposes a sigmask, and will it allow interrupts as expected?

Thank you!

[kevincianfarini]

I've just realized that io_uring_wait_cqes is a higher level function that exposes a sigmask. In the manpage I want to make sure I am understanding the following blurb correctly:

The sigmask specifies the set of signals to block. The prevailing signal mask is restored before returning.

So it seems like using pthread_kill to send either SIGINT, SIGTERM, SIGKILL, or SIGABORT should correctly interrupt the blocking CQE wait call if and only if it has not been masked by sigmask. Is that correct?