use spinning_top::Spinlock;
fn main() {
    // Wrap some data in a spinlock
    let data = String::from("Hello");
    let spinlock = Spinlock::new(data);
    make_uppercase(&spinlock); // only pass a shared reference
    // We have ownership of the spinlock, so we can extract the data without locking
    // Note: this consumes the spinlock
    let data = spinlock.into_inner();
    assert_eq!(data.as_str(), "HELLO");
}
fn make_uppercase(spinlock: &Spinlock<String>) {
    // Lock the spinlock to get a mutable reference to the data
    let mut locked_data = spinlock.lock();
    assert_eq!(locked_data.as_str(), "Hello");
    locked_data.make_ascii_uppercase();
    // the lock is automatically freed at the end of the scope
}

use spinning_top::Spinlock;
static DATA: Spinlock<u32> = Spinlock::new(0);
fn main() {
    let mut data = DATA.lock();
    *data += 1;
    assert_eq!(*data, 1);
}