1 // Checks for issue #26235
7 const NUM_THREADS: usize = 2;
17 impl<S> Stats<S> where S: Copy {
18 fn dot<B, F, T>(self, s: Stats<T>, f: F) -> Stats<B> where F: Fn(S, T) -> B {
19 let Stats { upsert: u1, delete: d1, insert: i1, update: p1 } = self;
20 let Stats { upsert: u2, delete: d2, insert: i2, update: p2 } = s;
21 Stats { upsert: f(u1, u2), delete: f(d1, d2), insert: f(i1, i2), update: f(p1, p2) }
24 fn new(init: S) -> Self {
25 Stats { upsert: init, delete: init, insert: init, update: init }
29 fn make_threads() -> Vec<thread::JoinHandle<()>> {
30 let mut t = Vec::with_capacity(NUM_THREADS);
31 for _ in 0..NUM_THREADS {
32 t.push(thread::spawn(move || {}));
37 let stats = [Stats::new(0); NUM_THREADS];
41 let Stats { ref upsert, ref delete, ref insert, ref update } = stats.iter().fold(
42 Stats::new(0), |res, &s| res.dot(s, |x: Key, y: Key| x.wrapping_add(y)));
43 println!("upserts: {}, deletes: {}, inserts: {}, updates: {}",
44 upsert, delete, insert, update);