Re: ping

> On Jul 10, 2026, at 3:32=E2=80=AFAM, David Nicol =
<[email protected]> wrote:
>=20
> I don't know if there is a standard for mapping a FD number to a =
[on-readable, on-writable, on-error] coderef triple, aside from just =
doing that with an AoA, but were I wanting to integrate an async system =
into an existing select loop, I could work with that. Especially if the =
system offered to take the same shape of data as an input for its own =
select loop.POE might have a standard for such things, I don't know.

The three most widely-used event systems I know of in Perl are:

- AnyEvent
- IO::Async
- Mojolicious

These are all abstractions over various methods of polling: select(2), =
poll(2), or OS-specific ones like Linux=E2=80=99s epoll. For example, =
AnyEvent includes a select-based, pure-Perl loop but can alternatively =
work with libev via XS.

All of these libraries have tradeoffs, so it=E2=80=99s hard for me to =
say, =E2=80=9CI wish everyone would just use X.=E2=80=9D That said, Perl =
would be much improved, in my opinion, if a good standard for I/O =
polling could emerge.

-FG=