diff --git a/src/share/vm/prims/whitebox.cpp b/src/share/vm/prims/whitebox.cpp
index da0a753c90dab564424b334228fb13bd7e84f793..776741be08a5d2809e9481bf8cfc62b4d17fd5ac 100644
--- a/src/share/vm/prims/whitebox.cpp
+++ b/src/share/vm/prims/whitebox.cpp
@@ -891,6 +891,16 @@ WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
   return (jlong) MetaspaceGC::capacity_until_GC();
 WB_END
 
+WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
+  oop obj_oop = JNIHandles::resolve(obj);
+  return (jboolean) obj_oop->mark()->has_monitor();
+WB_END
+
+WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
+  VM_ForceSafepoint force_safepoint_op;
+  VMThread::execute(&force_safepoint_op);
+WB_END
+
 //Some convenience methods to deal with objects from java
 int WhiteBox::offset_for_field(const char* field_name, oop object,
     Symbol* signature_symbol) {
@@ -1076,6 +1086,8 @@ static JNINativeMethod methods[] = {
   {CC"getCPUFeatures",     CC"()Ljava/lang/String;",  (void*)&WB_GetCPUFeatures     },
   {CC"getNMethod",         CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
                                                       (void*)&WB_GetNMethod         },
+  {CC"isMonitorInflated",  CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated  },
+  {CC"forceSafepoint",     CC"()V",                   (void*)&WB_ForceSafepoint     },
 };
 
 #undef CC
diff --git a/test/testlibrary/whitebox/sun/hotspot/WhiteBox.java b/test/testlibrary/whitebox/sun/hotspot/WhiteBox.java
index 0fab905fd001f3e14db700bd016c6a254a2d703a..07fabc9d984dec2af6d4af885fa17bc2ccea69cd 100644
--- a/test/testlibrary/whitebox/sun/hotspot/WhiteBox.java
+++ b/test/testlibrary/whitebox/sun/hotspot/WhiteBox.java
@@ -87,6 +87,8 @@ public class WhiteBox {
     return isClassAlive0(name.replace('.', '/'));
   }
   private native boolean isClassAlive0(String name);
+  public native boolean isMonitorInflated(Object obj);
+  public native void forceSafepoint();
 
   // Resource/Class Lookup Cache
   public native boolean classKnownToNotExist(ClassLoader loader, String name);