import time

fn fibonacci(c chan int, quit chan int) {
	println('fibonacci')
	mut x, mut y := 0, 1

	for {
		select {
			c <- x {
				println('send')
				x, y = y, x + y
			}
			_ = <-quit {
				println('quit')
				return
			}
			2 * time.second {
				println('timeout')
				return
			}
		}
	}
}

fn main() {
	ch := chan int{}
	quit := chan int{}

	spawn fn [ch, quit] () {
		for _ in 0 .. 5 {
			println('pop')
			println(<-ch)
		}
		println('quit')
		quit <- 0
	}()

	fibonacci(ch, quit)
}