func TestNoRaceProducerConsumerUnbuffered(t *testing.T) {
type Task struct {
f func()
done chan bool
}
queue := make(chan Task)
go func() {
t := <-queue
t.f()
t.done <- true
}()
doit := func(f func()) {
done := make(chan bool, 1)
queue <- Task{f, done}
<-done
}
x := 0
doit(func() {
x = 1
})
_ = x
}
func TestNoRaceSelect4(t *testing.T) {
type Task struct {
f func()
done chan bool
}
queue := make(chan Task)
dummy := make(chan bool)
go func() {
for {
select {
case t := <-queue:
t.f()
t.done <- true
}
}
}()
doit := func(f func()) {
done := make(chan bool, 1)
select {
case queue <- Task{f, done}:
case <-dummy:
}
select {
case <-done:
case <-dummy:
}
}
var x int
doit(func() {
x = 1
})
_ = x
}