Crate scope_lock

source ·
Expand description

§Scope lock

§Examples

use std::thread;

let mut a = vec![1, 2, 3];
let mut x = 0;

let f1 = &|()| {
    println!("hello from the first scoped thread");
    // We can borrow `a` here.
    dbg!(&a);
};
let f2 = &mut |()| {
    println!("hello from the second scoped thread");
    // We can even mutably borrow `x` here,
    // because no other threads are using it.
    x += a[0] + a[2];
};

scope_lock::lock_scope(|e| {
    thread::spawn({
        let f = e.extend_fn(f1);
        move || f.call(())
    });
    thread::spawn({
        let mut f = e.extend_fn_mut(f2);
        move || f.call(())
    });
    println!("hello from the main thread");
});

// After the scope, we can modify and access our variables again:
a.push(4);
assert_eq!(x, a.len());

Structs§

Functions§