47 lines
1.2 KiB
Rust
47 lines
1.2 KiB
Rust
// run-pass
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#![allow(unused_must_use)]
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#![allow(deprecated)]
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// ignore-cloudabi no process support
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// ignore-emscripten no threads support
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// ignore-sgx no processes
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use std::{env, fmt, process, sync, thread};
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struct SlowFmt(u32);
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impl fmt::Debug for SlowFmt {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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thread::sleep_ms(3);
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self.0.fmt(f)
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}
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}
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fn do_print(x: u32) {
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let x = SlowFmt(x);
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println!("{:?}{:?}{:?}{:?}{:?}", x, x, x, x, x);
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}
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fn main(){
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if env::args().count() == 2 {
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let barrier = sync::Arc::new(sync::Barrier::new(2));
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let tbarrier = barrier.clone();
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let t = thread::spawn(move || {
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tbarrier.wait();
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do_print(1);
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});
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barrier.wait();
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do_print(2);
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t.join();
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} else {
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let this = env::args().next().unwrap();
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let output = process::Command::new(this).arg("-").output().unwrap();
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for line in String::from_utf8(output.stdout).unwrap().lines() {
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match line.chars().next().unwrap() {
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'1' => assert_eq!(line, "11111"),
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'2' => assert_eq!(line, "22222"),
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chr => panic!("unexpected character {:?}", chr)
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}
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}
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}
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}
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