--- jsr166/src/test/loops/ContextSwitchTest.java	2010/09/27 19:15:15	1.5
+++ jsr166/src/test/loops/ContextSwitchTest.java	2015/10/12 20:16:47	1.9
@@ -1,13 +1,13 @@
 /*
  * Written by Doug Lea with assistance from members of JCP JSR-166
  * Expert Group and released to the public domain, as explained at
- * http://creativecommons.org/licenses/publicdomain
+ * http://creativecommons.org/publicdomain/zero/1.0/
  */
 
+import java.util.*;
 import java.util.concurrent.*;
-import java.util.concurrent.locks.*;
 import java.util.concurrent.atomic.*;
-import java.util.*;
+import java.util.concurrent.locks.*;
 
 public final class ContextSwitchTest {
     static final int iters = 1000000;
@@ -37,6 +37,13 @@ public final class ContextSwitchTest {
     }
 
     static final class MyThread extends Thread {
+
+        static {
+            // Reduce the risk of rare disastrous classloading in first call to
+            // LockSupport.park: https://bugs.openjdk.java.net/browse/JDK-8074773
+            Class<?> ensureLoaded = LockSupport.class;
+        }
+
         volatile Thread other;
         volatile int nparks;
 
@@ -56,7 +63,6 @@ public final class ContextSwitchTest {
             LockSupport.unpark(other);
             nparks = p;
             System.out.println("parks: " + p);
-
         }
     }
 }