diff -r f9e300086063 -r b7bcf7497f93 hotspot/src/share/vm/classfile/classLoaderData.hpp
--- a/hotspot/src/share/vm/classfile/classLoaderData.hpp	Fri Jun 07 09:33:01 2013 -0700
+++ b/hotspot/src/share/vm/classfile/classLoaderData.hpp	Mon Jun 10 11:30:51 2013 +0200
@@ -32,6 +32,10 @@
 #include "runtime/mutex.hpp"
 #include "utilities/growableArray.hpp"
 
+#if INCLUDE_TRACE
+# include "trace/traceTime.hpp"
+#endif
+
 //
 // A class loader represents a linkset. Conceptually, a linkset identifies
 // the complete transitive closure of resolved links that a dynamic linker can
@@ -49,6 +53,7 @@
 class JNIMethodBlock;
 class JNIHandleBlock;
 class Metadebug;
+
 // GC root for walking class loader data created
 
 class ClassLoaderDataGraph : public AllStatic {
@@ -63,6 +68,7 @@
   static ClassLoaderData* _saved_head;
 
   static ClassLoaderData* add(Handle class_loader, bool anonymous, TRAPS);
+  static void post_class_unload_events(void);
  public:
   static ClassLoaderData* find_or_create(Handle class_loader, TRAPS);
   static void purge();
@@ -71,6 +77,8 @@
   static void always_strong_oops_do(OopClosure* blk, KlassClosure* klass_closure, bool must_claim);
   static void keep_alive_oops_do(OopClosure* blk, KlassClosure* klass_closure, bool must_claim);
   static void classes_do(KlassClosure* klass_closure);
+  static void classes_do(void f(Klass* const));
+  static void classes_unloading_do(void f(Klass* const));
   static bool do_unloading(BoolObjectClosure* is_alive);
 
   // CMS support.
@@ -86,6 +94,12 @@
   static bool contains(address x);
   static bool contains_loader_data(ClassLoaderData* loader_data);
 #endif
+
+#if INCLUDE_TRACE
+ private:
+  static TracingTime _class_unload_time;
+  static void class_unload_event(Klass* const k);
+#endif
 };
 
 // ClassLoaderData class
@@ -171,7 +185,7 @@
   void unload();
   bool keep_alive() const       { return _keep_alive; }
   bool is_alive(BoolObjectClosure* is_alive_closure) const;
-
+  void classes_do(void f(Klass*));
   void classes_do(void f(InstanceKlass*));
 
   // Deallocate free list during class unloading.