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rustlings/exercises/threads/threads1.rs
Roberto Vidal b565c4d3e7 fix: line numbers in several exercises and hints
The introduction of `I AM NOT DONE` shifted the lines of all
exercises, which now need adjustment.
2019-11-14 08:21:56 +01:00

32 lines
882 B
Rust

// threads1.rs
// Make this compile! Execute `rustlings hint threads1` for hints :)
// The idea is the thread spawned on line 21 is completing jobs while the main thread is
// monitoring progress until 10 jobs are completed. If you see 6 lines
// of "waiting..." and the program ends without timing out when running,
// you've got it :)
// I AM NOT DONE
use std::sync::Arc;
use std::thread;
use std::time::Duration;
struct JobStatus {
jobs_completed: u32,
}
fn main() {
let status = Arc::new(JobStatus { jobs_completed: 0 });
let status_shared = status.clone();
thread::spawn(move || {
for _ in 0..10 {
thread::sleep(Duration::from_millis(250));
status_shared.jobs_completed += 1;
}
});
while status.jobs_completed < 10 {
println!("waiting... ");
thread::sleep(Duration::from_millis(500));
}
}