io_uring_cq_eventfd_enabled(3)

📦 version 2.15, in alpine 3.24, arch rolling, nixpkgs unstable, ubuntu resolute, ubuntu stonking

💖 io_uring_cq_eventfd_enabled — check if eventfd notifications are enabled 💖

okay bestie, welcome to io_uring_cq_eventfd_enabled(3) from the liburing Manual — yes she's a real one, a whole little page in section 3 of the manual, and honestly? she's giving "short but essential." ✨

🌸 SYNOPSIS 🌸

#include <liburing.h>

bool io_uring_cq_eventfd_enabled(const struct io_uring *ring);

like, that's it. one function. one argument. returns a bool. iconic behavior fr fr 🎀

🦋 DESCRIPTION 🦋

so the io_uring_cq_eventfd_enabled(3) function returns whether eventfd notifications are currently enabled for the io_uring instance that you passed in as ring. that's the whole vibe check: enabled or not enabled, no in-between, no drama. 💅

now, for the lore 🧚 — an eventfd can get registered with a ring using io_uring_register_eventfd(3) or io_uring_register_eventfd_async(3). once it's registered like that, those notifications can be temporarily disabled using io_uring_cq_eventfd_toggle(3). so the toggle is the main character who flips things on and off, and this function is the one you call to ask "hey… are we on right now or nah?" 😭

⭐ RETURN VALUE ⭐

  • Returns true if eventfd notifications are enabled 🔥
  • Returns false if they're disabled 💀

literally just a yes-or-no moment, no error codes, no sneaky surprises, we love a clean binary. ✨

👑 SEE ALSO 👑

go read those next bestie, they're the rest of the squad 🫶

ngl, this page is liburing-2.4, dated January 18, 2025 — so if you're reading this and the version's moved on, that's on the upgrade, not on us 💜

and that's the whole page!! short, sweet, slayed. go check your eventfd status, you deserve to know 🌈💖

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