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    SubjectRe: [PATCH] Revised timerfd() interface
    [...]
    > > Neither of the proposed APIs (either my multiplexed version of
    > > timerfd()
    > > or Jon's/my idea of using three system calls (like POSIX timers), or
    > > the notion of timerfd() integrated with POSIX timers) is more
    > > complicated than the existing POSIX timers API.
    > >
    > > The ABI change doesn't really matter, since timerfd() was broken in
    > > 2.6.22 anyway.
    > >
    > > Both previous APIs provided the features I have described provide:
    > >
    > > * the ability to fetch the old timer value when applying
    > > a new setting
    > >
    > > * the ability to non-destructively fetch the amount of time remaining
    > > on a timer.
    > >
    > > This is clearly useful for timers -- but you have not explained why
    > > you think this is not necessary for timerfd timers.
    >
    > <wakes up>
    >
    > I'd have thought that the existing stuff would be near-useless without
    > the capabilities which you describe?

    Not useless, but certainly less functional than it can/should be
    (and with not too much effort on the kernel implementation side).

    Cheers,

    Michael
    --
    Michael Kerrisk
    maintainer of Linux man pages Sections 2, 3, 4, 5, and 7

    Want to help with man page maintenance?
    Grab the latest tarball at
    http://www.kernel.org/pub/linux/docs/manpages ,
    read the HOWTOHELP file and grep the source
    files for 'FIXME'.

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