--- jsr166/src/test/tck/JSR166TestCase.java	2016/07/27 17:16:23	1.198
+++ jsr166/src/test/tck/JSR166TestCase.java	2016/08/10 01:28:14	1.200
@@ -41,6 +41,7 @@ import java.security.ProtectionDomain;
 import java.security.SecurityPermission;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.Date;
 import java.util.Enumeration;
 import java.util.Iterator;
@@ -62,6 +63,7 @@ import java.util.concurrent.RejectedExec
 import java.util.concurrent.Semaphore;
 import java.util.concurrent.SynchronousQueue;
 import java.util.concurrent.ThreadFactory;
+import java.util.concurrent.ThreadLocalRandom;
 import java.util.concurrent.ThreadPoolExecutor;
 import java.util.concurrent.TimeoutException;
 import java.util.concurrent.atomic.AtomicBoolean;
@@ -1251,7 +1253,7 @@ public class JSR166TestCase extends Test
      * thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
      */
     void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
-        long startTime = System.nanoTime();
+        long startTime = 0L;
         for (;;) {
             Thread.State s = thread.getState();
             if (s == Thread.State.BLOCKED ||
@@ -1260,6 +1262,8 @@ public class JSR166TestCase extends Test
                 return;
             else if (s == Thread.State.TERMINATED)
                 fail("Unexpected thread termination");
+            else if (startTime == 0L)
+                startTime = System.nanoTime();
             else if (millisElapsedSince(startTime) > timeoutMillis) {
                 threadAssertTrue(thread.isAlive());
                 return;
@@ -1873,4 +1877,7 @@ public class JSR166TestCase extends Test
                                1000L, MILLISECONDS,
                                new SynchronousQueue<Runnable>());
 
+    static <T> void shuffle(T[] array) {
+        Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
+    }
 }