#![no_main]
#![cfg_attr(target_os = "none", no_std)]

use core::sync::atomic::{AtomicU32, Ordering};

struct Hydrogen {
    available: u32,
    bonded: u32,
}

rt::mutex!(
    H,
    Hydrogen,
    Hydrogen {
        available: 0,
        bonded: 0
    }
);
rt::condvar!(HREADY);
rt::condvar!(HDONE);

fn hydrogen() {
    let mut g = H.lock();
    g.available += 1;
    HREADY.signal();
    HDONE.wait_while(&g, |g| g.bonded == 0);
    g.bonded -= 1;
}

fn oxygen() {
    let mut g = H.lock();
    HREADY.wait_while(&g, |g| g.available < 2);
    make_water();
    g.available -= 2;
    g.bonded += 2;
    g.unlock();
    HDONE.signal();
    HDONE.signal();
}

include!("water.rs");