| // Copyright 2015 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 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| #![allow(unused_must_use)] |
| #![allow(deprecated)] |
| // ignore-cloudabi no process support |
| // ignore-emscripten no threads support |
| |
| use std::{env, fmt, process, sync, thread}; |
| |
| struct SlowFmt(u32); |
| impl fmt::Debug for SlowFmt { |
| fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
| thread::sleep_ms(3); |
| self.0.fmt(f) |
| } |
| } |
| |
| fn do_print(x: u32) { |
| let x = SlowFmt(x); |
| println!("{:?}{:?}{:?}{:?}{:?}", x, x, x, x, x); |
| } |
| |
| fn main(){ |
| if env::args().count() == 2 { |
| let barrier = sync::Arc::new(sync::Barrier::new(2)); |
| let tbarrier = barrier.clone(); |
| let t = thread::spawn(move || { |
| tbarrier.wait(); |
| do_print(1); |
| }); |
| barrier.wait(); |
| do_print(2); |
| t.join(); |
| } else { |
| let this = env::args().next().unwrap(); |
| let output = process::Command::new(this).arg("-").output().unwrap(); |
| for line in String::from_utf8(output.stdout).unwrap().lines() { |
| match line.chars().next().unwrap() { |
| '1' => assert_eq!(line, "11111"), |
| '2' => assert_eq!(line, "22222"), |
| chr => panic!("unexpected character {:?}", chr) |
| } |
| } |
| } |
| } |