io_uring_cqe_get_data - get user data for completion event
#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);
The 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
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).
If the
user_data value has been set before submitting the request, it
will be returned. Otherwise the functions returns NULL.
io_uring_get_sqe(3),
io_uring_sqe_set_data(3),
io_uring_sqe_submit(3)