Function io_uring_cqe_get_data 

pub unsafe fn io_uring_cqe_get_data(cqe: *const io_uring_cqe) -> *mut c_void

Get user data for completion event

DESCRIPTION

The io_uring_cqe_get_data function returns the user_data with the completion queue entry cqe as a data pointer.

The io_uring_cqe_get_data64 function returns the user_data with the completion queue entry cqe as a 64-bit data value.

After the caller has received a completion queue entry (CQE) with io_uring_wait_cqe, the application can call io_uring_cqe_get_data or io_uring_cqe_get_data64 function to retrieve the user_data value. This requires that user_data has been set earlier with the function io_uring_sqe_set_data or io_uring_sqe_set_data64.

RETURN VALUE

If the user_data value has been set before submitting the request, it will be returned. Otherwise, the return value is undefined.

SEE ALSO

io_uring_get_sqe, io_uring_sqe_set_data, io_uring_submit