Threads

Rust provides a mechanism for spawning native OS threads via the spawn
function, the argument of this function is a moving closure.

  1. use std::thread;
  3. static NTHREADS: i32 = 10;
  5. // This is the `main` thread
  6. fn main() {
  7.     // Make a vector to hold the children which are spawned.
  8.     let mut children = vec![];
  10.     for i in 0..NTHREADS {
  11.         // Spin up another thread
  12.         children.push(thread::spawn(move || {
  13.             println!("this is thread number {}", i);
  14.         }));
  15.     }
  17.     for child in children {
  18.         // Wait for the thread to finish. Returns a result.
  19.         let _ = child.join();
  20.     }
  21. }

These threads will be scheduled by the OS.