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c6f1ff13d2
In accordance with tokio-rs/tokio-rfcs#3, the executor functionality of Tokio is being removed and will be relocated into futures-rs as a "current thread" executor. This PR removes task execution from the code base. As a temporary mesure, all examples and tests are switched to using CpuPool. Depends on #19.
62 lines
1.9 KiB
Rust
62 lines
1.9 KiB
Rust
//! A small server that writes as many nul bytes on all connections it receives.
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//!
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//! There is no concurrency in this server, only one connection is written to at
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//! a time. You can use this as a benchmark for the raw performance of writing
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//! data to a socket by measuring how much data is being written on each
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//! connection.
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//!
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//! Typically you'll want to run this example with:
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//!
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//! cargo run --example sink --release
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//!
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//! And then you can connect to it via:
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//!
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//! cargo run --example connect 127.0.0.1:8080 > /dev/null
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//!
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//! You should see your CPUs light up as data's being shove into the ether.
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extern crate env_logger;
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extern crate futures;
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extern crate futures_cpupool;
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extern crate tokio;
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extern crate tokio_io;
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use std::env;
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use std::iter;
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use std::net::SocketAddr;
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use futures::Future;
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use futures::future::Executor;
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use futures::stream::{self, Stream};
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use futures_cpupool::CpuPool;
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use tokio_io::IoFuture;
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use tokio::net::{TcpListener, TcpStream};
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use tokio::reactor::Core;
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fn main() {
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env_logger::init().unwrap();
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let addr = env::args().nth(1).unwrap_or("127.0.0.1:8080".to_string());
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let addr = addr.parse::<SocketAddr>().unwrap();
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let pool = CpuPool::new(1);
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let mut core = Core::new().unwrap();
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let handle = core.handle();
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let socket = TcpListener::bind(&addr, &handle).unwrap();
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println!("Listening on: {}", addr);
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let server = socket.incoming().for_each(|(socket, addr)| {
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println!("got a socket: {}", addr);
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pool.execute(write(socket).or_else(|_| Ok(()))).unwrap();
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Ok(())
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});
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core.run(server).unwrap();
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}
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fn write(socket: TcpStream) -> IoFuture<()> {
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static BUF: &'static [u8] = &[0; 64 * 1024];
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let iter = iter::repeat(());
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Box::new(stream::iter_ok(iter).fold(socket, |socket, ()| {
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tokio_io::io::write_all(socket, BUF).map(|(socket, _)| socket)
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}).map(|_| ()))
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}
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