mirror of https://github.com/m-labs/artiq.git
104 lines
2.5 KiB
Rust
104 lines
2.5 KiB
Rust
|
use std::prelude::v1::*;
|
||
|
use std::io::{self, Read};
|
||
|
use self::protocol::*;
|
||
|
|
||
|
mod protocol;
|
||
|
|
||
|
#[derive(Debug, Clone, Copy)]
|
||
|
enum KernelState {
|
||
|
Absent,
|
||
|
Loaded,
|
||
|
Running,
|
||
|
RpcWait
|
||
|
}
|
||
|
|
||
|
#[derive(Debug)]
|
||
|
pub struct Session {
|
||
|
kernel_state: KernelState,
|
||
|
}
|
||
|
|
||
|
extern {
|
||
|
fn kloader_stop();
|
||
|
fn watchdog_init();
|
||
|
fn kloader_start_idle_kernel();
|
||
|
}
|
||
|
|
||
|
impl Session {
|
||
|
pub fn start() -> Session {
|
||
|
unsafe { kloader_stop(); }
|
||
|
Session {
|
||
|
kernel_state: KernelState::Absent
|
||
|
}
|
||
|
}
|
||
|
|
||
|
pub fn end(self) {
|
||
|
unsafe {
|
||
|
kloader_stop();
|
||
|
watchdog_init();
|
||
|
kloader_start_idle_kernel();
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
fn check_magic(stream: &mut ::io::TcpStream) -> io::Result<()> {
|
||
|
const MAGIC: &'static [u8] = b"ARTIQ coredev\n";
|
||
|
|
||
|
let mut magic: [u8; 14] = [0; 14];
|
||
|
try!(stream.read_exact(&mut magic));
|
||
|
if magic != MAGIC {
|
||
|
Err(io::Error::new(io::ErrorKind::InvalidData, "unrecognized magic"))
|
||
|
} else {
|
||
|
Ok(())
|
||
|
}
|
||
|
}
|
||
|
|
||
|
fn handle_request(stream: &mut ::io::TcpStream) -> io::Result<()> {
|
||
|
fn read_request(stream: &mut ::io::TcpStream) -> io::Result<Request> {
|
||
|
let request = try!(Request::read_from(stream));
|
||
|
println!("comm<-host {:?}", request);
|
||
|
Ok(request)
|
||
|
}
|
||
|
|
||
|
fn write_reply(stream: &mut ::io::TcpStream, reply: Reply) -> io::Result<()> {
|
||
|
println!("comm->host {:?}", reply);
|
||
|
reply.write_to(stream)
|
||
|
}
|
||
|
|
||
|
match try!(read_request(stream)) {
|
||
|
Request::Ident => {
|
||
|
let mut ident: [u8; 256];
|
||
|
let ident = unsafe {
|
||
|
extern { fn get_ident(ident: *mut u8); }
|
||
|
|
||
|
ident = ::core::mem::uninitialized();
|
||
|
get_ident(ident.as_mut_ptr());
|
||
|
&ident[..ident.iter().position(|&c| c == 0).unwrap()]
|
||
|
};
|
||
|
|
||
|
write_reply(stream, Reply::Ident(ident))
|
||
|
},
|
||
|
_ => unreachable!()
|
||
|
}
|
||
|
}
|
||
|
|
||
|
fn handle_requests(stream: &mut ::io::TcpStream) -> io::Result<()> {
|
||
|
try!(check_magic(stream));
|
||
|
loop {
|
||
|
try!(handle_request(stream))
|
||
|
}
|
||
|
}
|
||
|
|
||
|
pub fn handler(waiter: ::io::Waiter) {
|
||
|
let addr = ::io::SocketAddr::new(::io::IP_ANY, 1381);
|
||
|
let listener = ::io::TcpListener::bind(waiter, addr).unwrap();
|
||
|
loop {
|
||
|
let (mut stream, _addr) = listener.accept().unwrap();
|
||
|
match handle_requests(&mut stream) {
|
||
|
Ok(()) => (),
|
||
|
Err(err) => {
|
||
|
println!("cannot handle network request: {:?}", err);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
}
|