#event-listener #events #parallel #dispatcher #listener #async

hey_listen

An event-dispatcher-collection offering async, sync, parallel, and prioritised solutions!

8 releases (4 breaking)

0.5.0 Apr 18, 2021
0.4.0 May 5, 2019
0.3.0 May 1, 2019
0.2.1 Dec 6, 2018
0.1.2 Jan 13, 2018

#599 in Concurrency

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165 downloads per month
Used in danmuji

ISC license

42KB
479 lines

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Hey! Listen!

Hey_listen is a collection of event-dispatchers aiming to suit all needs!
Currently covering:

  • Priority dispatch
  • Threadpool dispatch
  • Async dispatch

View the examples-folder on how to use each dispatcher.

Everyone is welcome to contribute, check out the CONTRIBUTING.md for further guidance.

Example

Here is a quick example on how to use the event-dispatcher:

use hey_listen::sync::{
    ParallelDispatcher, ParallelListener, ParallelDispatchResult,
};

#[derive(Clone, Eq, Hash, PartialEq)]
enum Event {
    Variant,
}

struct Listener {}

impl ParallelListener<Event> for Listener {
    fn on_event(&self, _event: &Event) -> Option<ParallelDispatchResult> {
        println!("I'm listening! :)");

        None
    }
}

fn main() {
    let listener = Listener {};
    let mut dispatcher = ParallelDispatcher::<Event>::new(4).expect("Could not construct threadpool");

    dispatcher.add_listener(Event::Variant, listener);
    dispatcher.dispatch_event(&Event::Variant);
}

Installation

Add this to your Cargo.toml:

[dependencies]
hey_listen = "0.5"

Dependencies

~0.4–8.5MB
~67K SLoC