threadpercore

server/src/config.rs

@@ -70,6 +70,17 @@ pub enum RuntimeFlavor {
 	/// Alternate multi-threaded tokio runtime.
 	#[cfg(tokio_unstable)]
 	MultiThreadAlt,
+	/// Thread-per-core tokio runtimes.
+	ThreadPerCore,
+}
+
+impl RuntimeFlavor {
+	pub fn is_thread_per_core(&self) -> bool {
+		match self {
+			Self::ThreadPerCore => true,
+			_ => false,
+		}
+	}
 }
 
 pub type BindAddr = (SocketType, String);

server/src/listener.rs

@@ -1,9 +1,5 @@
 use std::{
-	io::{BufReader, Cursor},
-	os::fd::AsFd,
-	path::PathBuf,
-	pin::Pin,
-	sync::Arc,
+	io::{BufReader, Cursor}, net::SocketAddr, os::fd::AsFd, path::PathBuf, pin::Pin, str::FromStr, sync::Arc
 };
 
 use anyhow::Context;
@@ -11,7 +7,7 @@ use rustls_pemfile::{certs, private_key};
 use tokio::{
 	fs::{remove_file, try_exists, File},
 	io::{AsyncBufRead, AsyncRead, AsyncWrite, ReadHalf, WriteHalf},
-	net::{tcp, unix, TcpListener, TcpStream, UnixListener, UnixStream},
+	net::{tcp, unix, TcpListener, TcpSocket, TcpStream, UnixListener, UnixStream},
 };
 use tokio_rustls::{rustls, server::TlsStream, TlsAcceptor};
 use uuid::Uuid;
@@ -286,9 +282,20 @@ pub enum ServerListener {
 
 impl ServerListener {
 	async fn bind_tcp(bind: &BindAddr) -> anyhow::Result<TcpListener> {
-		TcpListener::bind(&bind.1)
-			.await
-			.with_context(|| format!("failed to bind to tcp address `{}`", bind.1))
+		if CONFIG.server.runtime.is_thread_per_core() {
+			let listener = TcpSocket::new_v4()?;
+			listener
+				.set_reuseport(true)
+				.context("failed to set SO_REUSEPORT")?;
+			listener
+				.bind(SocketAddr::from_str(&bind.1)?)
+				.with_context(|| format!("failed to bind to tcp address `{}`", bind.1))?;
+			Ok(listener.listen(64)?)
+		} else {
+			TcpListener::bind(&bind.1)
+				.await
+				.with_context(|| format!("failed to bind to tcp address `{}`", bind.1))
+		}
 	}
 
 	async fn bind_unix(bind: &BindAddr) -> anyhow::Result<UnixListener> {

server/src/main.rs

@@ -2,11 +2,12 @@
 #![deny(clippy::todo)]
 #![allow(unexpected_cfgs)]
 
-use std::{collections::HashMap, fs::read_to_string, net::IpAddr};
+use std::{collections::HashMap, fs::read_to_string, future::Future, net::IpAddr, pin::Pin};
 
-use anyhow::{Context, Result};
+use anyhow::{anyhow, Context, Result};
 use clap::Parser;
-use config::{validate_config_cache, Cli, Config, RuntimeFlavor, StatsEndpoint};
+use config::{validate_config_cache, BindAddr, Cli, Config, RuntimeFlavor, StatsEndpoint};
+use futures_util::{future::select_all, FutureExt, TryFutureExt};
 use handle::{handle_wisp, handle_wsproxy, wisp::wispnet::handle_wispnet};
 use hickory_resolver::{
 	config::{NameServerConfigGroup, ResolverConfig, ResolverOpts},
@@ -15,13 +16,13 @@ use hickory_resolver::{
 };
 use lazy_static::lazy_static;
 use listener::ServerListener;
-use log::{error, info, trace, warn};
+use log::{debug, error, info, trace, warn};
 use route::{route_stats, ServerRouteResult};
 use stats::generate_stats;
 use tokio::{
 	runtime,
 	signal::unix::{signal, SignalKind},
-	sync::Mutex,
+	sync::{oneshot, Mutex},
 };
 use uuid::Uuid;
 use wisp_mux::packet::ConnectPacket;
@@ -134,6 +135,9 @@ fn main() -> Result<()> {
 		RuntimeFlavor::MultiThread => runtime::Builder::new_multi_thread(),
 		#[cfg(tokio_unstable)]
 		RuntimeFlavor::MultiThreadAlt => runtime::Builder::new_multi_thread_alt(),
+
+		// threadpercore has completely different runtime setup
+		RuntimeFlavor::ThreadPerCore => return threadpercore_main(),
 	};
 
 	builder.enable_all();
@@ -146,7 +150,7 @@ fn main() -> Result<()> {
 }
 
 #[doc(hidden)]
-async fn async_main() -> Result<()> {
+async fn async_init() {
 	#[cfg(feature = "tokio-console")]
 	console_subscriber::init();
 
@@ -160,20 +164,68 @@ async fn async_main() -> Result<()> {
 	trace!("CLI: {:#?}", &*CLI);
 	trace!("CONFIG: {:#?}", &*CONFIG);
 	trace!("RESOLVER: {:?}", &*RESOLVER);
+}
 
-	tokio::spawn(async {
-		let mut sig = signal(SignalKind::user_defined1()).unwrap();
-		while sig.recv().await.is_some() {
-			match generate_stats().await {
-				Ok(stats) => info!("Stats:\n{}", stats),
-				Err(err) => error!("error while creating stats {:?}", err),
-			}
+#[doc(hidden)]
+fn threadpercore_main() -> Result<()> {
+	let rt = runtime::Builder::new_current_thread()
+		.enable_all()
+		.build()?;
+
+	rt.block_on(async_init());
+
+	let cores = std::thread::available_parallelism()?.get();
+
+	let mut threads = Vec::with_capacity(cores);
+
+	for _ in 1..cores {
+		threads.push(Box::pin(threadpercore_init_thread(listen_wisp()).map_err(|x| anyhow!(x)).map(|x| x?)) as Pin<Box<dyn Future<Output = Result<()>>>>);
+	}
+
+	rt.block_on(async move {
+		tokio::spawn(listen_stats_cli());
+
+		if let Some(bind_addr) = CONFIG
+			.server
+			.stats_endpoint
+			.as_ref()
+			.and_then(StatsEndpoint::get_bindaddr)
+		{
+			tokio::spawn(listen_stats(bind_addr));
 		}
-	});
 
-	let mut listener = ServerListener::new(&CONFIG.server.bind)
-		.await
-		.with_context(|| format!("failed to bind to address {}", CONFIG.server.bind.1))?;
+		let wisp = Box::pin(tokio::spawn(listen_wisp()).map_err(|x| anyhow!(x)).map(|x| x?)) as Pin<Box<dyn Future<Output = Result<()>>>>;
+
+		select_all(threads.into_iter().chain(std::iter::once(wisp))).await.0
+	})
+}
+
+#[doc(hidden)]
+fn threadpercore_init_thread<T: Send + 'static>(
+	func: impl Future<Output = Result<T>> + Sync + Send + 'static,
+) -> oneshot::Receiver<Result<T>> {
+	let (tx, rx) = oneshot::channel();
+	std::thread::spawn(move || {
+		let ret = (|| {
+			let rt = runtime::Builder::new_current_thread()
+				.enable_all()
+				.build()?;
+
+			debug!("created threadpercore thread");
+
+			rt.block_on(func)
+		})();
+
+		let _ = tx.send(ret.context("thread per core thread failed"));
+	});
+	rx
+}
+
+#[doc(hidden)]
+async fn async_main() -> Result<()> {
+	async_init().await;
+
+	tokio::spawn(listen_stats_cli());
 
 	if let Some(bind_addr) = CONFIG
 		.server
@@ -181,27 +233,50 @@ async fn async_main() -> Result<()> {
 		.as_ref()
 		.and_then(StatsEndpoint::get_bindaddr)
 	{
-		info!("stats server listening on {:?}", bind_addr);
-		let mut stats_listener = ServerListener::new(&bind_addr).await.with_context(|| {
-			format!("failed to bind to address {} for stats server", bind_addr.1)
-		})?;
-
-		tokio::spawn(async move {
-			loop {
-				match stats_listener.accept().await {
-					Ok((stream, _)) => {
-						tokio::spawn(async move {
-							if let Err(e) = Box::pin(route_stats(stream)).await {
-								error!("error while routing stats client: {:?}", e);
-							}
-						});
-					}
-					Err(e) => error!("error while accepting stats client: {:?}", e),
-				}
-			}
-		});
+		tokio::spawn(listen_stats(bind_addr));
 	}
 
+	listen_wisp().await
+}
+
+#[doc(hidden)]
+async fn listen_stats_cli() {
+	let mut sig = signal(SignalKind::user_defined1()).unwrap();
+	while sig.recv().await.is_some() {
+		match generate_stats().await {
+			Ok(stats) => info!("Stats:\n{}", stats),
+			Err(err) => error!("error while creating stats {:?}", err),
+		}
+	}
+}
+
+#[doc(hidden)]
+async fn listen_stats(bind_addr: BindAddr) -> Result<()> {
+	info!("stats server listening on {:?}", bind_addr);
+	let mut stats_listener = ServerListener::new(&bind_addr)
+		.await
+		.with_context(|| format!("failed to bind to address {} for stats server", bind_addr.1))?;
+
+	loop {
+		match stats_listener.accept().await {
+			Ok((stream, _)) => {
+				tokio::spawn(async move {
+					if let Err(e) = Box::pin(route_stats(stream)).await {
+						error!("error while routing stats client: {:?}", e);
+					}
+				});
+			}
+			Err(e) => error!("error while accepting stats client: {:?}", e),
+		}
+	}
+}
+
+#[doc(hidden)]
+async fn listen_wisp() -> Result<()> {
+	let mut listener = ServerListener::new(&CONFIG.server.bind)
+		.await
+		.with_context(|| format!("failed to bind to address {}", CONFIG.server.bind.1))?;
+
 	let stats_endpoint = CONFIG
 		.server
 		.stats_endpoint