mirror of https://github.com/rust-lang/rust
64 lines
1.5 KiB
Rust
64 lines
1.5 KiB
Rust
//@ run-pass
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#![allow(unused_must_use)]
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//@ needs-threads
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use std::thread;
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use std::sync::mpsc::{channel, Sender};
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pub fn main() { println!("===== WITHOUT THREADS ====="); test00(); }
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fn test00_start(ch: &Sender<isize>, message: isize, count: isize) {
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println!("Starting test00_start");
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let mut i: isize = 0;
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while i < count {
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println!("Sending Message");
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ch.send(message + 0).unwrap();
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i = i + 1;
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}
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println!("Ending test00_start");
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}
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fn test00() {
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let number_of_tasks: isize = 16;
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let number_of_messages: isize = 4;
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println!("Creating tasks");
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let (tx, rx) = channel();
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let mut i: isize = 0;
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// Create and spawn threads...
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let mut results = Vec::new();
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while i < number_of_tasks {
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let tx = tx.clone();
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results.push(thread::spawn({
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let i = i;
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move|| {
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test00_start(&tx, i, number_of_messages)
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}
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}));
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i = i + 1;
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}
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// Read from spawned threads...
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let mut sum = 0;
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for _r in &results {
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i = 0;
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while i < number_of_messages {
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let value = rx.recv().unwrap();
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sum += value;
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i = i + 1;
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}
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}
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// Join spawned threads...
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for r in results { r.join(); }
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println!("Completed: Final number is: ");
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println!("{}", sum);
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// assert (sum == (((number_of_threads * (number_of_threads - 1)) / 2) *
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// number_of_messages));
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assert_eq!(sum, 480);
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}
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