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it unlocks many cool features!
- use std::thread;
- use std::time::Duration;
- use std::sync::{Mutex, Arc};
- struct Philosopher {
- name: String,
- left: usize,
- right: usize,
- }
- impl Philosopher {
- fn new(name: &str, left: usize, right: usize) -> Philosopher {
- Philosopher {
- name: name.to_string(),
- left: left,
- right: right,
- }
- }
- fn eat(&self, table: &Table) {
- let _left = table.forks[self.left].lock().unwrap();
- thread::sleep(Duration::from_millis(150));
- let _right = table.forks[self.right].lock().unwrap();
- println!("{} is eating.", self.name);
- thread::sleep(Duration::from_millis(1000));
- println!("{} is done eating.", self.name);
- }
- }
- struct Table {
- forks: Vec<Mutex<()>>,
- }
- fn main() {
- let table = Arc::new(Table { forks: vec![
- Mutex::new(()),
- Mutex::new(()),
- Mutex::new(()),
- Mutex::new(()),
- Mutex::new(()),
- ]});
- let philosophers = vec![
- Philosopher::new("Judith Butler", 0, 1),
- Philosopher::new("Gilles Deleuze", 1, 2),
- Philosopher::new("Karl Marx", 2, 3),
- Philosopher::new("Emma Goldman", 3, 4),
- Philosopher::new("Michel Foucault", 0, 4),
- ];
- let handles: Vec<_> = philosophers.into_iter().map(|p| {
- let table = table.clone();
- thread::spawn(move || {
- p.eat(&table);
- })
- }).collect();
- for h in handles {
- h.join().unwrap();
- }
- }
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