use std::io;
use std::path::Path;
use std::sync::atomic::Ordering;
#[cfg(feature = "io_timeout")]
use std::time::Duration;
use super::super::{add_socket, co_io_result, IoData};
#[cfg(feature = "io_cancel")]
use crate::coroutine_impl::co_cancel_data;
use crate::coroutine_impl::{is_coroutine, CoroutineImpl, EventSource};
use crate::io::{CoIo, OptionCell};
use crate::os::unix::net::UnixStream;
use crate::yield_now::yield_with_io;
use socket2::{Domain, SockAddr, Socket, Type};
pub struct UnixStreamConnect {
io_data: OptionCell<IoData>,
stream: OptionCell<Socket>,
path: SockAddr,
is_connected: bool,
pub(crate) is_coroutine: bool,
}
impl UnixStreamConnect {
pub fn new<P: AsRef<Path>>(path: P) -> io::Result<Self> {
let path = SockAddr::unix(path)?;
let socket = Socket::new(Domain::UNIX, Type::STREAM, None)?;
socket.set_nonblocking(true)?;
add_socket(&socket).map(|io| UnixStreamConnect {
io_data: OptionCell::new(io),
stream: OptionCell::new(socket),
path,
is_connected: false,
is_coroutine: is_coroutine(),
})
}
#[inline]
pub fn check_connected(&mut self) -> io::Result<bool> {
match self.stream.connect(&self.path) {
Ok(_) => {
self.is_connected = true;
Ok(true)
}
Err(ref e) if e.raw_os_error() == Some(libc::EINPROGRESS) => Ok(false),
Err(e) => Err(e),
}
}
pub fn done(&mut self) -> io::Result<UnixStream> {
fn convert_to_stream(s: &mut UnixStreamConnect) -> UnixStream {
let stream = s.stream.take().into();
UnixStream::from_coio(CoIo::from_raw(stream, s.io_data.take()))
}
if self.is_connected {
return Ok(convert_to_stream(self));
}
loop {
co_io_result(self.is_coroutine)?;
self.io_data.io_flag.store(false, Ordering::Relaxed);
match self.stream.connect(&self.path) {
Ok(_) => return Ok(convert_to_stream(self)),
Err(ref e) if e.raw_os_error() == Some(libc::EINPROGRESS) => {}
Err(ref e) if e.raw_os_error() == Some(libc::EALREADY) => {}
Err(ref e) if e.raw_os_error() == Some(libc::EISCONN) => {
return Ok(convert_to_stream(self));
}
Err(e) => return Err(e),
}
if self.io_data.io_flag.load(Ordering::Relaxed) {
continue;
}
yield_with_io(self, self.is_coroutine);
}
}
}
impl EventSource for UnixStreamConnect {
fn subscribe(&mut self, co: CoroutineImpl) {
#[cfg(feature = "io_cancel")]
let cancel = co_cancel_data(&co);
let io_data = &self.io_data;
#[cfg(feature = "io_timeout")]
crate::scheduler::get_scheduler()
.get_selector()
.add_io_timer(&self.io_data, Duration::from_secs(2));
io_data.co.store(co);
if io_data.io_flag.load(Ordering::Acquire) {
#[allow(clippy::needless_return)]
return io_data.fast_schedule();
}
#[cfg(feature = "io_cancel")]
{
cancel.set_io((*io_data).clone());
if cancel.is_canceled() {
unsafe { cancel.cancel() };
}
}
}
}