Function io_uring_cq_eventfd_toggle 

pub unsafe fn io_uring_cq_eventfd_toggle(
    ring: *mut io_uring,
    enabled: bool,
) -> c_int

Toggle eventfd notifications on or off

DESCRIPTION

The io_uring_cq_eventfd_toggle function toggles eventfd notifications for the io_uring instance specified by ring. If enabled is true, eventfd notifications are enabled. If enabled is false, they are disabled.

An eventfd must first be registered with the ring using io_uring_register_eventfd or io_uring_register_eventfd_async before this function can be used.

This can be useful when the application wants to temporarily stop receiving eventfd notifications, for example during a batch processing phase.

RETURN VALUE

Returns 0 on success. On error, a negative errno value is returned:

-EOPNOTSUPP
The kernel does not support toggling eventfd notifications, or no eventfd is registered.

SEE ALSO

io_uring_register_eventfd, io_uring_register_eventfd_async, io_uring_cq_eventfd_enabled