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use std::io::{self, Write};
use std::net::{TcpListener, TcpStream};
use std::thread;
use std::time::Duration;
use easy_parallel::Parallel;
use polling::{Event, Events, Poller};
#[test]
fn concurrent_add() -> io::Result<()> {
let (reader, mut writer) = tcp_pair()?;
let poller = Poller::new()?;
let mut events = Events::new();
let result = Parallel::new()
.add(|| {
poller.wait(&mut events, None)?;
Ok(())
})
.add(|| {
thread::sleep(Duration::from_millis(100));
unsafe {
poller.add(&reader, Event::readable(0))?;
}
writer.write_all(&[1])?;
Ok(())
})
.run()
.into_iter()
.collect::<io::Result<()>>();
poller.delete(&reader)?;
result?;
assert_eq!(events.len(), 1);
assert_eq!(
events.iter().next().unwrap().with_no_extra(),
Event::readable(0)
);
Ok(())
}
#[test]
fn concurrent_modify() -> io::Result<()> {
let (reader, mut writer) = tcp_pair()?;
let poller = Poller::new()?;
unsafe {
poller.add(&reader, Event::none(0))?;
}
let mut events = Events::new();
Parallel::new()
.add(|| {
poller.wait(&mut events, Some(Duration::from_secs(10)))?;
Ok(())
})
.add(|| {
thread::sleep(Duration::from_millis(100));
poller.modify(&reader, Event::readable(0))?;
writer.write_all(&[1])?;
Ok(())
})
.run()
.into_iter()
.collect::<io::Result<()>>()?;
assert_eq!(events.len(), 1);
assert_eq!(
events.iter().next().unwrap().with_no_extra(),
Event::readable(0)
);
Ok(())
}
#[cfg(all(unix, not(target_os = "vita")))]
#[test]
fn concurrent_interruption() -> io::Result<()> {
struct MakeItSend<T>(T);
unsafe impl<T> Send for MakeItSend<T> {}
let (reader, _writer) = tcp_pair()?;
let poller = Poller::new()?;
unsafe {
poller.add(&reader, Event::none(0))?;
}
let mut events = Events::new();
let events_borrow = &mut events;
let (sender, receiver) = std::sync::mpsc::channel();
Parallel::new()
.add(move || {
// Register a signal handler so that the syscall is actually interrupted. A signal that
// is ignored by default does not cause an interrupted syscall.
signal_hook::flag::register(signal_hook::consts::signal::SIGURG, Default::default())?;
// Signal to the other thread how to send a signal to us
sender
.send(MakeItSend(unsafe { libc::pthread_self() }))
.unwrap();
poller.wait(events_borrow, Some(Duration::from_secs(1)))?;
Ok(())
})
.add(move || {
let MakeItSend(target_thread) = receiver.recv().unwrap();
thread::sleep(Duration::from_millis(100));
assert_eq!(0, unsafe {
libc::pthread_kill(target_thread, libc::SIGURG)
});
Ok(())
})
.run()
.into_iter()
.collect::<io::Result<()>>()?;
assert_eq!(events.len(), 0);
Ok(())
}
fn tcp_pair() -> io::Result<(TcpStream, TcpStream)> {
let listener = TcpListener::bind("127.0.0.1:0")?;
let a = TcpStream::connect(listener.local_addr()?)?;
let (b, _) = listener.accept()?;
Ok((a, b))
}
|
