goal = headroom
	} else {
		goal -= headroom
	}
	return goal
}

func TestIdleMarkWorkerCount(t *testing.T) {
	const workers = 10
	c := NewGCController(100, math.MaxInt64)
	c.SetMaxIdleMarkWorkers(workers)
	for i := 0; i < workers; i++ {
		if !c.NeedIdleMarkWorker() {
			t.Fatalf("expected to need idle mark workers: i=%d", i)
		}
		if !c.AddIdleMarkWorker() {

	return c.needIdleMarkWorker()
}

func (c *GCController) RemoveIdleMarkWorker() {
	c.removeIdleMarkWorker()
}

func (c *GCController) SetMaxIdleMarkWorkers(max int32) {
	c.setMaxIdleMarkWorkers(max)
}

var alwaysFalse bool
var escapeSink any

func Escape[T any](x T) T {
	if alwaysFalse {
		escapeSink = x
	}
	return x
}