Vincent Rischmann 6630a5ede5 io_uring: improve IO_Uring.copy_cqe ...

copy_cqes() is not guaranteed to return as many CQEs as provided in the
`wait_nr` argument, meaning the assert in `copy_cqe` can trigger.

Instead, loop until we do get at least one CQE returned.

This mimics the behaviour of liburing's _io_uring_get_cqe.

2022-01-04 02:13:41 -05:00

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