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good progress on restart_idle

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Simon Renblad 2024-09-06 17:31:37 +08:00
parent 7c2cc51ae3
commit d1dce8ede9
1 changed files with 38 additions and 61 deletions
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89
src/runtime/src/comms.rs
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@ -805,82 +805,59 @@ pub fn main(timer: GlobalTimer, cfg: Config) {
let restart_idle = Rc::new(Semaphore::new(0, 1));
mgmt::start(cfg.clone(), restart_idle.clone());
let semaphores = Rc::new(
(Semaphore::new(0, 1),
Semaphore::new(1, 1),
Semaphore::new(1, 1),
Semaphore::new(1, 1)));
let terminate = Rc::new(Semaphore::new(0, 1));
let connection = Rc::new(Semaphore::new(1, 1));
let finish = Rc::new(Semaphore::new(1, 1));
let start = Rc::new(Semaphore::new(1, 1)); // run idle kernel once without needing restart
// turn the above into a control obj
//
let stream_refcell = Rc::new(RefCell::new(None));
// handle connects
task::spawn(async move {
loop {
clone_mult!(semaphores, control, up_destinations, aux_mutex, routing_table);
semaphores.0.async_wait().await;
semaphores.1.try_wait();
let _ = task_lock.async_lock().await;
start.async_wait().await;
let stream_opt = stream_refcell.borrow_mut();
let _ = connection.try_wait();
let _ = finish.try_wait();
select_biased! {
_ = (async {
// run connection
let mut stream = stream_opt.borrow_mut()?;
if let Some(&mut stream) = stream_opt {
let _ = handle_connection(&mut stream, control.clone(), &up_destinations, &aux_mutex, &routing_table, timer)
.await
.map_err(|e| warn!("connection terminated: {}", e));
}).fuse() => {
semaphores.2.signal();
},
_ = semaphores.1.async_wait().fuse() => (),
}
}
});
// handle idle
task::spawn(async move {
loop {
clone_mult!(semaphores, control, up_destinations, aux_mutex, routing_table);
semaphores.2.async_wait().await;
semaphores.3.try_wait();
let _ = task_lock.async_lock().await;
select_biased! {
_ = (async {
connection.signal();
if let Some(buffer) = cfg.read("idle_kernel").ok() {
load_and_run_idle_kernel(&buffer, &control, &up_destinations, &aux_mutex, &routing_table, timer).await;
}
}).fuse() => (),
_ = semaphores.3.async_wait().fuse() => (),
}).fuse() => (), // TODO: on clean exit with existing idle -> run again?
_ = terminate.async_wait().fuse() => (),
}
if let Some(&stream) = stream_opt {
stream.flush().await();
stream.abort().await();
}
finish.signal();
}
});
task::spawn(async move {
loop {
select_biased! {
clone_mult!(semaphores, stream_refcell);
let stream_opt = select_biased! {
temp_s = (async {
Some(Rc::new(TcpStream::accept(1381, 0x10_000, 0x10_000).await.unwrap()))
}).fuse() => temp_s,
_ = (async {
let temp_s = Some(TcpStream::accept(1381, 0x10_000, 0x10_000).await.unwrap()); // ALT: implement dummy
// tcp stream that is empty (another reason the priv construct is annoying)
if let Some(&stream) = stream_opt {
let _ = stream.flush().await;
let _ = stream.abort().await;
}
stream_opt.replace(temp_s);
}).fuse() => {
if semaphore.1.try_wait().is_none() {
semaphore.1.signal(); // STOP KERNEL
}
if semaphore.3.try_wait().is_none() {
semaphore.3.signal(); // STOP IDLE
}
// if the other stream exists -> flush it and replace with the new stream
semaphore.0.signal(); // NEW KERNEL
}
_ = (async {
restart_idle.wait_async().await;
}).fuse() => {
if semaphore.3.try_wait().is_none() {
semaphore.3.signal(); // STOP IDLE
semaphore.2.signal(); // NEW IDLE
}
}
}
restart_idle.async_wait().await;
connection.async_wait().await;
}).fuse() => None
};
terminate.signal();
finish.async_wait().await;
stream_refcell.replace(stream_opt);
start.signal();
}
});