Re: Comparing the aio and epoll event frameworks.

[William Lee Irwin III <wli@holomorphy.com>]

Davide Libenzi wrote:
>>> Adding a single shot feature to epoll takes about 5 lines of code,
>>> comments included :) You know how many reuqests I had ? Zero, nada.

On Mon, 19 May 2003, Dan Kegel wrote:
>> I thought edge triggered epoll *was* single-shot.

On Mon, May 19, 2003 at 05:47:15PM -0700, Davide Libenzi wrote:
> For single shot I mean that once you receive one event, you will not
> receive more events for that fd if you do not rearm it. Suppose you
> receive 1000 bytes of data and you get an event (EPOLLIN). If after 10
> seconds you receive another 1000 bytes, you will receive another event.
> This is not single shot.

I think this would be useful for network daemons that would like to
fairly schedule responses (i.e. not re-arm until a client on a given fd
deserves a turn again). IRC daemons would appear to be a perfect
candidate for such. OTOH you may want to wait until someone is writing
such a beast so "it will be used" instead of "it is potentially useful".


-- wli