yaaral 0.5.3

yet another async runtime abstraction library
Documentation 
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//! Implementation of the Runtime for the `futures-executor` runtime

use std::future::Future;

use futures::{
    executor::ThreadPool,
    future::RemoteHandle,
    task::{SpawnError, SpawnExt},
};

use crate::prelude::*;

impl<T: 'static + Send> TaskHandle for RemoteHandle<Result<T, Infallible>> {
    type Output = T;
    type JoinError = Infallible;
    fn join(self) -> impl Future<Output = Result<Self::Output, Self::JoinError>> {
        self
    }
    fn abort(self) {}
    async fn cancel(self) {}
    fn detach(self) {
        self.forget()
    }
}

/// Runtime from the `futures-executor` crate
#[derive(Clone)]
pub struct Runtime {
    thread_pool: ThreadPool,
}

impl From<futures::executor::ThreadPool> for Runtime {
    fn from(thread_pool: ThreadPool) -> Self {
        Self { thread_pool }
    }
}

impl TaskInterface for Runtime {
    type TaskHandle<T: 'static + Send> = RemoteHandle<Result<T, Self::JoinError>>;
    type SpawnError = SpawnError;
    type JoinError = Infallible;

    fn spawn_task<F, T>(
        &self,
        future: F,
    ) -> Result<crate::utils::TaskHandle<Self::TaskHandle<F::Output>>, Self::SpawnError>
    where
        F: Future<Output = T> + Send + 'static,
        T: Send + 'static,
    {
        self.thread_pool
            .spawn_with_handle(async { Ok(future.await) })
            .map(|x| x.into())
    }
    fn block_on<F: Future>(&self, future: F) -> F::Output {
        futures::executor::block_on(future)
    }
}

impl CreationInterface for Runtime {
    type NewError = std::io::Error;

    fn new(config: Config) -> Result<Self, Self::NewError> {
        let mut thread_pool_builder = ThreadPool::builder();
        if let Some(prefix) = config.prefix {
            thread_pool_builder.name_prefix(prefix);
        }
        if let Some(thread_count) = config.thread_count {
            thread_pool_builder.pool_size(thread_count);
        }
        Ok(Self {
            thread_pool: thread_pool_builder.create()?,
        })
    }
}