diff -r 72b63ee33f57 -r 17843fff200d jdk/src/share/classes/sun/misc/Unsafe.java
--- a/jdk/src/share/classes/sun/misc/Unsafe.java	Thu Jul 12 00:12:52 2012 -0700
+++ b/jdk/src/share/classes/sun/misc/Unsafe.java	Tue Jul 24 10:47:44 2012 -0700
@@ -678,6 +678,14 @@
     public native Object staticFieldBase(Field f);
 
     /**
+     * Detect if the given class may need to be initialized. This is often
+     * needed in conjunction with obtaining the static field base of a
+     * class.
+     * @return false only if a call to {@code ensureClassInitialized} would have no effect
+     */
+    public native boolean shouldBeInitialized(Class<?> c);
+
+    /**
      * Ensure the given class has been initialized. This is often
      * needed in conjunction with obtaining the static field base of a
      * class.