worker semantics change

work.go

@@ -58,22 +58,24 @@ func After(delay time.Duration, work func()) {
 func RunQueue() {
 	defer log_info("Queue runner done.")
 	heap.Init(&queue)
+	ticker := time.Tick(10 * time.Millisecond)
 	for {
-		if len(queue) == 0 {
-			time.Sleep(10 * time.Microsecond)
-			continue
+		select {
+		case <-ticker:
+			if queue.Len() == 0 {
+				break
+			}
+			future, ok := heap.Pop(&queue).(*Future)
+			if !ok {
+				log_error("there's shit on the work heap")
+				break
+			}
+			if future.ts.Before(time.Now()) {
+				future.work()
+			} else {
+				heap.Push(&queue, future)
+			}
 		}
-		queueLock.Lock()
-		future, ok := heap.Pop(&queue).(*Future)
-		queueLock.Unlock()
-		if !ok {
-			log_error("there's shit on the work heap")
-			continue
-		}
-		if future.ts.After(time.Now()) {
-			time.Sleep(future.ts.Sub(time.Now()))
-		}
-		future.work()
 	}
 }