diff --git a/src/share/vm/gc_implementation/parallelScavenge/psTasks.cpp b/src/share/vm/gc_implementation/parallelScavenge/psTasks.cpp
index 6470281a99236134c96d7b5942047a07b7382de3..ea0e627dc79f792a011677ea833bad12db39125d 100644
--- a/src/share/vm/gc_implementation/parallelScavenge/psTasks.cpp
+++ b/src/share/vm/gc_implementation/parallelScavenge/psTasks.cpp
@@ -65,7 +65,7 @@ void ScavengeRootsTask::do_it(GCTaskManager* manager, uint which) {
     case threads:
     {
       ResourceMark rm;
-      CLDToOopClosure* cld_closure = NULL; // Not needed. All CLDs are already visited.
+      CLDClosure* cld_closure = NULL; // Not needed. All CLDs are already visited.
       Threads::oops_do(&roots_closure, cld_closure, NULL);
     }
     break;
@@ -122,7 +122,7 @@ void ThreadRootsTask::do_it(GCTaskManager* manager, uint which) {
 
   PSPromotionManager* pm = PSPromotionManager::gc_thread_promotion_manager(which);
   PSScavengeRootsClosure roots_closure(pm);
-  CLDToOopClosure* roots_from_clds = NULL;  // Not needed. All CLDs are already visited.
+  CLDClosure* roots_from_clds = NULL;  // Not needed. All CLDs are already visited.
   CodeBlobToOopClosure roots_in_blobs(&roots_closure, /*do_marking=*/ true);
 
   if (_java_thread != NULL)
diff --git a/src/share/vm/memory/iterator.hpp b/src/share/vm/memory/iterator.hpp
index dd98234d31ece4291df688b100bc6e3857eaf28c..33d10d69ef6809f1d6528f0082907dfdb55147d2 100644
--- a/src/share/vm/memory/iterator.hpp
+++ b/src/share/vm/memory/iterator.hpp
@@ -128,6 +128,11 @@ class KlassClosure : public Closure {
   virtual void do_klass(Klass* k) = 0;
 };
 
+class CLDClosure : public Closure {
+ public:
+  virtual void do_cld(ClassLoaderData* cld) = 0;
+};
+
 class KlassToOopClosure : public KlassClosure {
   OopClosure* _oop_closure;
  public:
@@ -135,7 +140,7 @@ class KlassToOopClosure : public KlassClosure {
   virtual void do_klass(Klass* k);
 };
 
-class CLDToOopClosure {
+class CLDToOopClosure : public CLDClosure {
   OopClosure* _oop_closure;
   KlassToOopClosure _klass_closure;
   bool _must_claim_cld;
diff --git a/src/share/vm/runtime/frame.cpp b/src/share/vm/runtime/frame.cpp
index 2d06c835e48ca36f5fc02425adcd93fbccd9747f..fa1ab5e6807b49019fe0f63d0b6e053f88e06d93 100644
--- a/src/share/vm/runtime/frame.cpp
+++ b/src/share/vm/runtime/frame.cpp
@@ -900,7 +900,7 @@ oop* frame::interpreter_callee_receiver_addr(Symbol* signature) {
 }
 
 
-void frame::oops_interpreted_do(OopClosure* f, CLDToOopClosure* cld_f,
+void frame::oops_interpreted_do(OopClosure* f, CLDClosure* cld_f,
     const RegisterMap* map, bool query_oop_map_cache) {
   assert(is_interpreted_frame(), "Not an interpreted frame");
   assert(map != NULL, "map must be set");
@@ -1140,7 +1140,7 @@ void frame::oops_entry_do(OopClosure* f, const RegisterMap* map) {
 }
 
 
-void frame::oops_do_internal(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf, RegisterMap* map, bool use_interpreter_oop_map_cache) {
+void frame::oops_do_internal(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf, RegisterMap* map, bool use_interpreter_oop_map_cache) {
 #ifndef PRODUCT
   // simulate GC crash here to dump java thread in error report
   if (CrashGCForDumpingJavaThread) {
diff --git a/src/share/vm/runtime/frame.hpp b/src/share/vm/runtime/frame.hpp
index ef515fb30e1fa255f9963df6af91da65e8d74ce8..f715f68b52d3a56c7d96c4a7a937e4039340f4ed 100644
--- a/src/share/vm/runtime/frame.hpp
+++ b/src/share/vm/runtime/frame.hpp
@@ -419,19 +419,19 @@ class frame VALUE_OBJ_CLASS_SPEC {
 
   // Oops-do's
   void oops_compiled_arguments_do(Symbol* signature, bool has_receiver, bool has_appendix, const RegisterMap* reg_map, OopClosure* f);
-  void oops_interpreted_do(OopClosure* f, CLDToOopClosure* cld_f, const RegisterMap* map, bool query_oop_map_cache = true);
+  void oops_interpreted_do(OopClosure* f, CLDClosure* cld_f, const RegisterMap* map, bool query_oop_map_cache = true);
 
  private:
   void oops_interpreted_arguments_do(Symbol* signature, bool has_receiver, OopClosure* f);
 
   // Iteration of oops
-  void oops_do_internal(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf, RegisterMap* map, bool use_interpreter_oop_map_cache);
+  void oops_do_internal(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf, RegisterMap* map, bool use_interpreter_oop_map_cache);
   void oops_entry_do(OopClosure* f, const RegisterMap* map);
   void oops_code_blob_do(OopClosure* f, CodeBlobClosure* cf, const RegisterMap* map);
   int adjust_offset(Method* method, int index); // helper for above fn
  public:
   // Memory management
-  void oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf, RegisterMap* map) { oops_do_internal(f, cld_f, cf, map, true); }
+  void oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf, RegisterMap* map) { oops_do_internal(f, cld_f, cf, map, true); }
   void nmethods_do(CodeBlobClosure* cf);
 
   // RedefineClasses support for finding live interpreted methods on the stack
diff --git a/src/share/vm/runtime/thread.cpp b/src/share/vm/runtime/thread.cpp
index 9077ba4b2c4915359a1f2b6babe008c581ed287b..fef35d64c12a62d0c5d7e6f7a126b81e5546a413 100644
--- a/src/share/vm/runtime/thread.cpp
+++ b/src/share/vm/runtime/thread.cpp
@@ -834,7 +834,7 @@ bool Thread::claim_oops_do_par_case(int strong_roots_parity) {
   return false;
 }
 
-void Thread::oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf) {
+void Thread::oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf) {
   active_handles()->oops_do(f);
   // Do oop for ThreadShadow
   f->do_oop((oop*)&_pending_exception);
@@ -2730,7 +2730,7 @@ public:
   }
 };
 
-void JavaThread::oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf) {
+void JavaThread::oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf) {
   // Verify that the deferred card marks have been flushed.
   assert(deferred_card_mark().is_empty(), "Should be empty during GC");
 
@@ -3253,7 +3253,7 @@ CompilerThread::CompilerThread(CompileQueue* queue, CompilerCounters* counters)
 #endif
 }
 
-void CompilerThread::oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf) {
+void CompilerThread::oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf) {
   JavaThread::oops_do(f, cld_f, cf);
   if (_scanned_nmethod != NULL && cf != NULL) {
     // Safepoints can occur when the sweeper is scanning an nmethod so
@@ -4167,14 +4167,14 @@ bool Threads::includes(JavaThread* p) {
 // uses the Threads_lock to gurantee this property. It also makes sure that
 // all threads gets blocked when exiting or starting).
 
-void Threads::oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf) {
+void Threads::oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf) {
   ALL_JAVA_THREADS(p) {
     p->oops_do(f, cld_f, cf);
   }
   VMThread::vm_thread()->oops_do(f, cld_f, cf);
 }
 
-void Threads::possibly_parallel_oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf) {
+void Threads::possibly_parallel_oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf) {
   // Introduce a mechanism allowing parallel threads to claim threads as
   // root groups.  Overhead should be small enough to use all the time,
   // even in sequential code.
diff --git a/src/share/vm/runtime/thread.hpp b/src/share/vm/runtime/thread.hpp
index f2f8b6a38a18cc7f6ea31d4c7901bcc8eb0cbd42..82ec64706fd4b7bf289316f400503dd935b2fd86 100644
--- a/src/share/vm/runtime/thread.hpp
+++ b/src/share/vm/runtime/thread.hpp
@@ -472,7 +472,7 @@ class Thread: public ThreadShadow {
   // Apply "cld_f->do_cld" to CLDs that are otherwise not kept alive.
   //   Used by JavaThread::oops_do.
   // Apply "cf->do_code_blob" (if !NULL) to all code blobs active in frames
-  virtual void oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf);
+  virtual void oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf);
 
   // Handles the parallel case for the method below.
 private:
@@ -1429,7 +1429,7 @@ class JavaThread: public Thread {
   void frames_do(void f(frame*, const RegisterMap*));
 
   // Memory operations
-  void oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf);
+  void oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf);
 
   // Sweeper operations
   void nmethods_do(CodeBlobClosure* cf);
@@ -1860,7 +1860,7 @@ class CompilerThread : public JavaThread {
   // GC support
   // Apply "f->do_oop" to all root oops in "this".
   // Apply "cf->do_code_blob" (if !NULL) to all code blobs active in frames
-  void oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf);
+  void oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf);
 
 #ifndef PRODUCT
 private:
@@ -1927,9 +1927,9 @@ class Threads: AllStatic {
 
   // Apply "f->do_oop" to all root oops in all threads.
   // This version may only be called by sequential code.
-  static void oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf);
+  static void oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf);
   // This version may be called by sequential or parallel code.
-  static void possibly_parallel_oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf);
+  static void possibly_parallel_oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf);
   // This creates a list of GCTasks, one per thread.
   static void create_thread_roots_tasks(GCTaskQueue* q);
   // This creates a list of GCTasks, one per thread, for marking objects.
diff --git a/src/share/vm/runtime/vmThread.cpp b/src/share/vm/runtime/vmThread.cpp
index daf9c4e702949d5ab2b55f90015f130186c96b17..0ee5982a9a35d5f3ab122ba43bf19089a2600387 100644
--- a/src/share/vm/runtime/vmThread.cpp
+++ b/src/share/vm/runtime/vmThread.cpp
@@ -682,7 +682,7 @@ void VMThread::execute(VM_Operation* op) {
 }
 
 
-void VMThread::oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf) {
+void VMThread::oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf) {
   Thread::oops_do(f, cld_f, cf);
   _vm_queue->oops_do(f);
 }
diff --git a/src/share/vm/runtime/vmThread.hpp b/src/share/vm/runtime/vmThread.hpp
index d7a45b385a3de63f4497ea4749bcadd4303a0696..2682d9d5f243343bf4173d05c025dc4a10dd01bb 100644
--- a/src/share/vm/runtime/vmThread.hpp
+++ b/src/share/vm/runtime/vmThread.hpp
@@ -126,7 +126,7 @@ class VMThread: public NamedThread {
   static VMThread* vm_thread()                    { return _vm_thread; }
 
   // GC support
-  void oops_do(OopClosure* f, CLDToOopClosure* cld_f, CodeBlobClosure* cf);
+  void oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf);
 
   // Debugging
   void print_on(outputStream* st) const;