--- jsr166/src/test/tck/JSR166TestCase.java	2015/09/26 19:08:26	1.147
+++ jsr166/src/test/tck/JSR166TestCase.java	2015/09/28 08:23:49	1.148
@@ -1254,6 +1254,13 @@ public class JSR166TestCase extends Test
             }};
     }
 
+    public Runnable countDowner(final CountDownLatch latch) {
+        return new CheckedRunnable() {
+            public void realRun() throws InterruptedException {
+                latch.countDown();
+            }};
+    }
+
     public Runnable awaiter(final CountDownLatch latch) {
         return new CheckedRunnable() {
             public void realRun() throws InterruptedException {