--- a/src/share/vm/prims/whitebox.cpp	Tue Oct 28 09:17:36 2014 +0100
+++ b/src/share/vm/prims/whitebox.cpp	Mon Oct 13 16:09:57 2014 -0700
@@ -104,6 +104,28 @@
   return closure.found();
 WB_END
 
+WB_ENTRY(jboolean, WB_ClassKnownToNotExist(JNIEnv* env, jobject o, jobject loader, jstring name))
+  ThreadToNativeFromVM ttnfv(thread);   // can't be in VM when we call JNI
+  const char* class_name = env->GetStringUTFChars(name, NULL);
+  jboolean result = JVM_KnownToNotExist(env, loader, class_name);
+  env->ReleaseStringUTFChars(name, class_name);
+  return result;
+WB_END
+
+WB_ENTRY(jobjectArray, WB_GetLookupCacheURLs(JNIEnv* env, jobject o, jobject loader))
+  ThreadToNativeFromVM ttnfv(thread);   // can't be in VM when we call JNI
+  return JVM_GetResourceLookupCacheURLs(env, loader);
+WB_END
+
+WB_ENTRY(jintArray, WB_GetLookupCacheMatches(JNIEnv* env, jobject o, jobject loader, jstring name))
+  ThreadToNativeFromVM ttnfv(thread);   // can't be in VM when we call JNI
+  const char* resource_name = env->GetStringUTFChars(name, NULL);
+  jintArray result = JVM_GetResourceLookupCache(env, loader, resource_name);
+
+  env->ReleaseStringUTFChars(name, resource_name);
+  return result;
+WB_END
+
 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
   return (jlong)Arguments::max_heap_for_compressed_oops();
 }
@@ -939,6 +961,11 @@
   {CC"isObjectInOldGen",   CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen  },
   {CC"getHeapOopSize",     CC"()I",                   (void*)&WB_GetHeapOopSize    },
   {CC"isClassAlive0",      CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive      },
+  {CC"classKnownToNotExist",
+                           CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)Z",(void*)&WB_ClassKnownToNotExist},
+  {CC"getLookupCacheURLs", CC"(Ljava/lang/ClassLoader;)[Ljava/net/URL;",    (void*)&WB_GetLookupCacheURLs},
+  {CC"getLookupCacheMatches", CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)[I",
+                                                      (void*)&WB_GetLookupCacheMatches},
   {CC"parseCommandLine",
       CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
       (void*) &WB_ParseCommandLine