v/vlib/sync/channel_4_test.v

33 lines
534 B
V

fn do_rec(ch chan int, resch chan i64) {
mut sum := i64(0)
for _ in 0 .. 2000 {
sum += <-ch
}
println(sum)
resch <- sum
}
fn do_send(ch chan int) {
for i in 0 .. 2000 {
ch <- i
}
}
fn test_channel_multi_buffered() {
ch := chan int{cap: 100}
resch := chan i64{}
go do_rec(ch, resch)
go do_rec(ch, resch)
go do_rec(ch, resch)
go do_rec(ch, resch)
go do_send(ch)
go do_send(ch)
go do_send(ch)
go do_send(ch)
mut sum := i64(0)
for _ in 0 .. 4 {
sum += <-resch
}
assert sum == i64(4) * 2000 * (2000 - 1) / 2
}