// Copyright 2016 The Rust Project Developers. See the COPYRIGHT // file at the top-level directory of this distribution and at // http://rust-lang.org/COPYRIGHT. // // Licensed under the Apache License, Version 2.0 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. use std::thread::{self, sleep}; use std::time::Duration; use std::sync::{Arc, Mutex}; use std::u64; fn main() { let finished = Arc::new(Mutex::new(false)); let t_finished = finished.clone(); thread::spawn(move || { sleep(Duration::new(u64::MAX, 0)); *t_finished.lock().unwrap() = true; }); sleep(Duration::from_millis(100)); assert_eq!(*finished.lock().unwrap(), false); }