lkml.org 
[lkml]   [2002]   [Oct]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: async poll
    John Gardiner Myers wrote:
    >
    > Dan Kegel wrote:
    >
    >> In that situation, why not just add the fd to an epoll, and have the
    >> epoll deliver events through Ben's interface?
    >
    >
    > Because you might need to use the aio_data facility of the iocb
    > interface.

    Presumably epoll_add could be enhanced to let user specify a user data
    word.

    > Because you might want to keep the kernel from
    > simultaneously delivering two events for the same fd to two different
    > threads.

    You might want to use aio_write() for writes, and read() for reads,
    in which case you could tell epoll you're not interested in
    write readiness events. Then there'd be no double notification
    for reads or writes on same fd.
    It's a bit contrived, but I can imagine it being useful.

    - Dan



    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 13:30    [W:4.004 / U:1.308 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site