Re: Kernel patches enabling better POSIX AIO (Was Re: [3/4] kevent: AIO, aio_sendfile)

Sébastien Dugué
2006-09-04T14:38:08Z

On Sat, 2006-08-12 at 15:28 -0400, Jakub Jelinek wrote:
> On Sat, Aug 12, 2006 at 12:10:35PM -0700, Ulrich Drepper wrote:
> > > I am wondering about that too. IIRC, the IO_NOTIFY_* constants are not
> > > part of the ABI, but only internal to the kernel implementation. I think
> > > Zach had suggested inferring THREAD_ID notification if the pid specified
> > > is not zero. But, I don't see why ->sigev_notify couldn't used directly
> > > (just like the POSIX timers code does) thus doing away with the
> > > new constants altogether. Sebestian/Laurent, do you recall?
> >
> > I suggest to model the implementation after the timer code which does
> > exactly what we need.
>
> Yeah, and if at all possible we want to use just one helper thread for
> SIGEV_THREAD notification of timers/aio/etc., so it really should behave the
> same as timer thread notification.
>

That's exactly what is done in libposix-aio.

Sébastien.

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Sébastien Dugué BULL/FREC:B1-247
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Linux POSIX AIO: http://www.bullopensource.org/posix
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