runtime: testing runtime

runtime/internal/lib/time/tick.go

@@ -0,0 +1,36 @@
+package time
+
+import "unsafe"
+
+type Ticker struct {
+	C <-chan Time // The channel on which the ticks are delivered.
+}
+
+func NewTicker(d Duration) *Ticker {
+	if d <= 0 {
+		panic("non-positive interval for NewTicker")
+	}
+	c := make(chan Time, 1)
+	t := &Timer{C: c}
+	t.C = c
+	startTimer(&t.r)
+	return (*Ticker)(unsafe.Pointer(t))
+}
+
+func (t *Ticker) Stop() {
+	stopTimer(&(*Timer)(unsafe.Pointer(t)).r)
+}
+
+func (t *Ticker) Reset(d Duration) {
+	if d <= 0 {
+		panic("non-positive interval for Ticker.Reset")
+	}
+	resetTimer(&(*Timer)(unsafe.Pointer(t)).r, when(d))
+}
+
+func Tick(d Duration) <-chan Time {
+	if d <= 0 {
+		return nil
+	}
+	return NewTicker(d).C
+}