Question about io_uring_for_each_cqe

[MBkkt]

Could you explain why do you do load on every iteration?

https://github.com/axboe/liburing/blob/master/src/include/liburing.h#L295

[axboe]

Reloading it should not be necessary.

[MBkkt]

@axboe

But behavior with single load and load on every iteration could be different? Because kernel can produce new cqe while it is iterating.
Or I don't understand it right?

[axboe]

That is obviously true, but I would suspect most loops to process CQEs are pretty light (and hence fast) and therefore the likelihood of getting a new entry while looping is pretty small. So while it doesn't hurt to reload the cq tail on every loop, it'd probably be better to avoid it.

[MBkkt]

Thanks.