Changeset f100a83


Ignore:
Timestamp:
Mar 24, 2020, 3:59:13 PM (18 months ago)
Author:
Thierry Delisle <tdelisle@…>
Branches:
arm-eh, jacob/cs343-translation, master, new-ast, new-ast-unique-expr
Children:
276ae57e
Parents:
ae66348
Message:

Updated io_uring example to be less hacky

File:
1 edited

Legend:

Unmodified
Added
Removed
  • examples/io_uring.c

    rae66348 rf100a83  
    3333      io_uring_prep_readv(sqe, fd, &iov, 1, 0);
    3434
     35      sqe->user_data = data;
     36
    3537      /* tell the kernel we have an sqe ready for consumption */
    3638      io_uring_submit(&ring);
     
    3840      /* wait for the sqe to complete */
    3941      int ret = io_uring_wait_cqe(&ring, &cqe);
    40       printf("%d\n", ret);
     42     
     43      /* read and process cqe event */
     44      if(ret == 0) {
     45            char * out = cqe->user_data;
     46            signed int len = cqe->res;
     47            io_uring_cqe_seen(&ring, cqe);
    4148
    42       /* read and process cqe event */
    43       printf("%s", data);
    44       io_uring_cqe_seen(&ring, cqe);
     49            if(len > 0) {
     50                  printf("%.*s", len, out);
     51            }
     52      }
     53      else {
     54            printf("%d\n", ret);
     55            io_uring_cqe_seen(&ring, cqe);
     56      }
    4557
    4658      io_uring_queue_exit(&ring);
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