8342081: Shenandoah: Remove extra ShenandoahMarkUpdateRefsSuperClosure

Reviewed-by: ysr

Author: shipilev

src/hotspot/share/gc/shenandoah/shenandoahOopClosures.hpp

@@ -61,33 +61,23 @@ class ShenandoahMarkRefsSuperClosure : public MetadataVisitingOopIterateClosure
   }
 };
 
-class ShenandoahMarkUpdateRefsSuperClosure : public ShenandoahMarkRefsSuperClosure {
-protected:
+template <ShenandoahGenerationType GENERATION>
+class ShenandoahMarkUpdateRefsClosure : public ShenandoahMarkRefsSuperClosure {
+private:
   ShenandoahHeap* const _heap;
 
-  template <class T, ShenandoahGenerationType GENERATION>
+  template <class T>
   inline void work(T* p);
 
 public:
-  ShenandoahMarkUpdateRefsSuperClosure(ShenandoahObjToScanQueue* q, ShenandoahReferenceProcessor* rp) :
+  ShenandoahMarkUpdateRefsClosure(ShenandoahObjToScanQueue* q, ShenandoahReferenceProcessor* rp) :
     ShenandoahMarkRefsSuperClosure(q, rp),
     _heap(ShenandoahHeap::heap()) {
     assert(_heap->is_stw_gc_in_progress(), "Can only be used for STW GC");
-  };
-};
-
-template <ShenandoahGenerationType GENERATION>
-class ShenandoahMarkUpdateRefsClosure : public ShenandoahMarkUpdateRefsSuperClosure {
-private:
-  template <class T>
-  inline void do_oop_work(T* p)     { work<T, GENERATION>(p); }
-
-public:
-  ShenandoahMarkUpdateRefsClosure(ShenandoahObjToScanQueue* q, ShenandoahReferenceProcessor* rp) :
-    ShenandoahMarkUpdateRefsSuperClosure(q, rp) {}
+  }
 
-  virtual void do_oop(narrowOop* p) { do_oop_work(p); }
-  virtual void do_oop(oop* p)       { do_oop_work(p); }
+  virtual void do_oop(narrowOop* p) { work(p); }
+  virtual void do_oop(oop* p)       { work(p); }
 };
 
 template <ShenandoahGenerationType GENERATION>

src/hotspot/share/gc/shenandoah/shenandoahOopClosures.inline.hpp

@@ -35,8 +35,9 @@ inline void ShenandoahMarkRefsSuperClosure::work(T* p) {
   ShenandoahMark::mark_through_ref<T, GENERATION>(p, _queue, _mark_context, _weak);
 }
 
-template<class T, ShenandoahGenerationType GENERATION>
-inline void ShenandoahMarkUpdateRefsSuperClosure::work(T* p) {
+template<ShenandoahGenerationType GENERATION>
+template<class T>
+inline void ShenandoahMarkUpdateRefsClosure<GENERATION>::work(T* p) {
   // Update the location
   _heap->update_with_forwarded(p);