--- a/hotspot/src/share/vm/prims/whitebox.cpp	Thu Oct 23 09:41:59 2014 -1000
+++ b/hotspot/src/share/vm/prims/whitebox.cpp	Fri Oct 24 08:22:33 2014 +0200
@@ -566,13 +566,13 @@
 WB_END
 
 template <typename T>
-static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAt)(const char*, T*)) {
+static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAt)(const char*, T*, bool, bool)) {
   if (name == NULL) {
     return false;
   }
   ThreadToNativeFromVM ttnfv(thread);   // can't be in VM when we call JNI
   const char* flag_name = env->GetStringUTFChars(name, NULL);
-  bool result = (*TAt)(flag_name, value);
+  bool result = (*TAt)(flag_name, value, true, true);
   env->ReleaseStringUTFChars(name, flag_name);
   return result;
 }
@@ -619,6 +619,24 @@
   return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
 }
 
+static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
+  ThreadToNativeFromVM ttnfv(thread);   // can't be in VM when we call JNI
+  const char* flag_name = env->GetStringUTFChars(name, NULL);
+  Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
+  env->ReleaseStringUTFChars(name, flag_name);
+  return result;
+}
+
+WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
+  Flag* flag = getVMFlag(thread, env, name);
+  return (flag != NULL) && flag->is_constant_in_binary();
+WB_END
+
+WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
+  Flag* flag = getVMFlag(thread, env, name);
+  return (flag != NULL) && !(flag->is_unlocked() || flag->is_unlocker());
+WB_END
+
 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
   bool result;
   if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
@@ -1018,6 +1036,8 @@
       CC"(Ljava/lang/reflect/Executable;II)Z",        (void*)&WB_EnqueueMethodForCompilation},
   {CC"clearMethodState",
       CC"(Ljava/lang/reflect/Executable;)V",          (void*)&WB_ClearMethodState},
+  {CC"isConstantVMFlag",   CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
+  {CC"isLockedVMFlag",     CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
   {CC"setBooleanVMFlag",   CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
   {CC"setIntxVMFlag",      CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
   {CC"setUintxVMFlag",     CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},