NAME

       io_uring_cqe_get_data - get user data for completion event

SYNOPSIS

       #include <liburing.h>

       void *io_uring_cqe_get_data(struct io_uring_cqe *cqe);

       __u64 io_uring_cqe_get_data64(struct io_uring_cqe *cqe);

DESCRIPTION

       The io_uring_cqe_get_data(3) function returns the user_data with the completion queue entry cqe as a data
       pointer.

       The io_uring_cqe_get_data64(3) 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(3), the application
       can call io_uring_cqe_get_data(3) or io_uring_cqe_get_data64(3) function to retrieve the user_data value.
       This  requires  that  user_data  has  been  set  earlier  with  the  function io_uring_sqe_set_data(3) or
       io_uring_sqe_set_data64(3).

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(3), io_uring_sqe_set_data(3), io_uring_sqe_submit(3)