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sync/channels: expose ch.closed as bool pseudo attribute (#8244)

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This commit is contained in:
Uwe Krüger
2021-01-22 08:37:29 +01:00
committed by GitHub
parent 820e684313
commit 925ffd76f4
5 changed files with 50 additions and 43 deletions
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74
vlib/sync/channel_close_test.v
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@ -1,79 +1,73 @@
import sync
fn do_rec(mut ch sync.Channel, mut resch sync.Channel) {
fn do_rec(ch chan int, resch chan i64) {
mut sum := i64(0)
for {
mut a := 0
if !ch.pop(&a) {
a := <-ch or {
break
}
sum += a
}
assert ch.closed == true
println(sum)
resch.push(&sum)
resch <- sum
}
fn do_send(mut ch sync.Channel) {
fn do_send(ch chan int) {
for i in 0 .. 8000 {
ch.push(&i)
ch <- i
}
assert ch.closed == false
ch.close()
assert ch.closed == true
}
fn test_channel_close_buffered_multi() {
mut ch := sync.new_channel<int>(0)
mut resch := sync.new_channel<i64>(100)
go do_rec(mut ch, mut resch)
go do_rec(mut ch, mut resch)
go do_rec(mut ch, mut resch)
go do_rec(mut ch, mut resch)
go do_send(mut ch)
ch := chan int{cap: 10}
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)
mut sum := i64(0)
for _ in 0 .. 4 {
mut r := i64(0)
resch.pop(&r)
sum += r
sum += <- resch
}
assert sum == i64(8000) * (8000 - 1) / 2
}
fn test_channel_close_unbuffered_multi() {
mut ch := sync.new_channel<int>(0)
mut resch := sync.new_channel<i64>(100)
go do_rec(mut ch, mut resch)
go do_rec(mut ch, mut resch)
go do_rec(mut ch, mut resch)
go do_rec(mut ch, mut resch)
go do_send(mut ch)
ch := chan int{}
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)
mut sum := i64(0)
for _ in 0 .. 4 {
mut r := i64(0)
resch.pop(&r)
sum += r
sum += <-resch
}
assert sum == i64(8000) * (8000 - 1) / 2
}
fn test_channel_close_buffered() {
mut ch := sync.new_channel<int>(0)
mut resch := sync.new_channel<i64>(100)
go do_rec(mut ch, mut resch)
go do_send(mut ch)
ch := chan int{cap: 100}
resch := chan i64{}
go do_rec(ch, resch)
go do_send(ch)
mut sum := i64(0)
mut r := i64(0)
resch.pop(&r)
sum += r
sum += <-resch
assert sum == i64(8000) * (8000 - 1) / 2
}
fn test_channel_close_unbuffered() {
mut ch := sync.new_channel<int>(0)
mut resch := sync.new_channel<i64>(100)
go do_rec(mut ch, mut resch)
go do_send(mut ch)
ch := chan int{}
resch := chan i64{cap: 100}
go do_rec(ch, resch)
go do_send(ch)
mut sum := i64(0)
mut r := i64(0)
resch.pop(&r)
sum += r
sum += <-resch
assert sum == i64(8000) * (8000 - 1) / 2
}