async_rs/
runtime.rs

1use crate::{
2    sys::AsSysFd,
3    traits::{Executor, Reactor, RuntimeKit},
4    util::{SocketAddrsResolver, Task},
5};
6use futures_core::Stream;
7use futures_io::{AsyncRead, AsyncWrite};
8use std::{
9    future::Future,
10    io::{self, Read, Write},
11    net::{SocketAddr, ToSocketAddrs},
12    time::{Duration, Instant},
13};
14
15/// A full-featured Runtime implementation
16#[derive(Clone, Debug)]
17pub struct Runtime<RK: RuntimeKit> {
18    kit: RK,
19}
20
21impl<RK: RuntimeKit> Runtime<RK> {
22    /// Create a new Runtime from a RuntimeKit
23    pub fn new(kit: RK) -> Self {
24        Self { kit }
25    }
26
27    /// Asynchronously resolve the given domain name
28    pub fn to_socket_addrs<A: ToSocketAddrs + Send + 'static>(
29        &self,
30        addrs: A,
31    ) -> SocketAddrsResolver<'_, RK, A>
32    where
33        <A as std::net::ToSocketAddrs>::Iter: Send + 'static,
34    {
35        SocketAddrsResolver {
36            runtime: self,
37            addrs,
38        }
39    }
40
41    /// Check if an `std::io::Error` is a runtime shutdown error
42    pub fn is_runtime_shutdown_error(&self, err: &io::Error) -> bool {
43        #[cfg(feature = "tokio")]
44        if tokio::runtime::is_rt_shutdown_err(err) {
45            return true;
46        }
47        let _ = err;
48        false
49    }
50}
51
52impl<RK: RuntimeKit> From<RK> for Runtime<RK> {
53    fn from(kit: RK) -> Self {
54        Self::new(kit)
55    }
56}
57
58impl<RK: RuntimeKit> Executor for Runtime<RK> {
59    type Task<T: Send + 'static> = <RK as Executor>::Task<T>;
60
61    fn block_on<T, F: Future<Output = T>>(&self, f: F) -> T {
62        self.kit.block_on(f)
63    }
64
65    fn spawn<T: Send + 'static, F: Future<Output = T> + Send + 'static>(
66        &self,
67        f: F,
68    ) -> Task<Self::Task<T>> {
69        self.kit.spawn(f)
70    }
71
72    fn spawn_blocking<T: Send + 'static, F: FnOnce() -> T + Send + 'static>(
73        &self,
74        f: F,
75    ) -> Task<Self::Task<T>> {
76        self.kit.spawn_blocking(f)
77    }
78}
79
80impl<RK: RuntimeKit> Reactor for Runtime<RK> {
81    type TcpStream = <RK as Reactor>::TcpStream;
82    type Sleep = <RK as Reactor>::Sleep;
83
84    fn register<H: Read + Write + AsSysFd + Send + 'static>(
85        &self,
86        socket: H,
87    ) -> io::Result<impl AsyncRead + AsyncWrite + Send + Unpin + 'static> {
88        self.kit.register(socket)
89    }
90
91    fn sleep(&self, dur: Duration) -> Self::Sleep {
92        self.kit.sleep(dur)
93    }
94
95    fn interval(&self, dur: Duration) -> impl Stream<Item = Instant> + Send + 'static {
96        self.kit.interval(dur)
97    }
98
99    fn tcp_connect_addr(
100        &self,
101        addr: SocketAddr,
102    ) -> impl Future<Output = io::Result<Self::TcpStream>> + Send + 'static {
103        self.kit.tcp_connect_addr(addr)
104    }
105}
async_rs/runtime.rs

async_rs/
runtime.rs
