#actor #channel #tokio #async


A mimimal API to create asynchronous actors

6 releases

0.3.0 Apr 18, 2024
0.2.2 Apr 3, 2024
0.2.1 Mar 28, 2024
0.2.0 Jul 12, 2023
0.1.0 May 3, 2023

#418 in Asynchronous

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atticus: A simple implementation of an actor in tokio.

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Actors provide a way to invoke messages or requests among asynchronous tasks. This avoids the need to use Arc<Mutex<T>> instances of an object to be passed around so shared state can be made. It makes use of channels to exchange data.

Actors aim to clarify ownership data structures.


The main objective of this library is to provide the most basic or minimal implementation of an actor that can in the tokio runtime.

There may be future endeavors to make it run in other runtimes as well as no_std support.


Create an actor by implementing the Actor trait.

use atticus::{Actor, actor};
use async_trait::async_trait;

struct IntToString;

impl Actor for IntToString {
    type Request = i32;
    type Response = String;
    async fn handle(&mut self, request: Self::Request) -> Option<Self::Response> {

async fn main() {
    // Spawn the actor
    let handle = actor::run(IntToString{}, 1);

    // Send a request to convert 5 to String.
    let response = handle.requestor.request(5).await;

    assert_eq!(response.unwrap(), Some(String::from("5")));


This project is licensed under either of

at your option.

The SPDX license identifier for this project is MIT OR Apache-2.0.


Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.


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