NAME

       io_uring_wait_cqe_nr - wait for one or more io_uring completion events

SYNOPSIS

       #include <liburing.h>

       int io_uring_wait_cqe_nr(struct io_uring *ring,
                                struct io_uring_cqe **cqe_ptr,
                                unsigned wait_nr);

DESCRIPTION

       The  io_uring_wait_cqe_nr(3)  function returns wait_nr IO completion events from the queue
       belonging to the ring param, waiting for it if  necessary.  If  the  requested  number  of
       events  are already available in the ring when invoked, no waiting will occur. The cqe_ptr
       param is filled in on success.

       After the caller has submitted a request  with  io_uring_submit(3),  the  application  can
       retrieve the completion with io_uring_wait_cqe(3).

RETURN VALUE

       On  success  io_uring_wait_cqe_nr(3)  returns  0  and  the  cqe_ptr param is filled in. On
       failure it returns -errno.  The return value indicates the result of waiting  for  a  CQE,
       and it has no relation to the CQE result itself.

SEE ALSO

       io_uring_submit(3), io_uring_wait_cqes(3)