src/share/vm/gc_implementation/g1/g1OopClosures.hpp

rev 5734 : 8027746: Remove do_gen_barrier template parameter in G1ParCopyClosure
Summary: Remove the above mentioned template parameter and related unused code. Also remove some classes that are never used.

@@ -36,11 +36,11 @@
 class CMTask;
 class ReferenceProcessor;
 
 // A class that scans oops in a given heap region (much as OopsInGenClosure
 // scans oops in a generation.)
-class OopsInHeapRegionClosure: public OopsInGenClosure {
+class OopsInHeapRegionClosure: public ExtendedOopClosure {
 protected:
   HeapRegion* _from;
 public:
   void set_region(HeapRegion* from) { _from = from; }
 };

@@ -129,11 +129,11 @@
 
   void set_scanned_klass(Klass* k) { _scanned_klass = k; }
   template <class T> void do_klass_barrier(T* p, oop new_obj);
 };
 
-template <bool do_gen_barrier, G1Barrier barrier, bool do_mark_object>
+template <G1Barrier barrier, bool do_mark_object>
 class G1ParCopyClosure : public G1ParCopyHelper {
   G1ParScanClosure _scanner;
   template <class T> void do_oop_work(T* p);
 
 protected:

@@ -164,34 +164,28 @@
   }
   virtual void do_oop(oop* p)       { do_oop_nv(p); }
   virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
 };
 
-typedef G1ParCopyClosure<false, G1BarrierNone, false> G1ParScanExtRootClosure;
-typedef G1ParCopyClosure<false, G1BarrierKlass, false> G1ParScanMetadataClosure;
+typedef G1ParCopyClosure<G1BarrierNone, false> G1ParScanExtRootClosure;
+typedef G1ParCopyClosure<G1BarrierKlass, false> G1ParScanMetadataClosure;
 
 
-typedef G1ParCopyClosure<false, G1BarrierNone, true> G1ParScanAndMarkExtRootClosure;
-typedef G1ParCopyClosure<true,  G1BarrierNone, true> G1ParScanAndMarkClosure;
-typedef G1ParCopyClosure<false, G1BarrierKlass, true> G1ParScanAndMarkMetadataClosure;
-
-// The following closure types are no longer used but are retained
-// for historical reasons:
-// typedef G1ParCopyClosure<false, G1BarrierRS,   false> G1ParScanHeapRSClosure;
-// typedef G1ParCopyClosure<false, G1BarrierRS,   true> G1ParScanAndMarkHeapRSClosure;
+typedef G1ParCopyClosure<G1BarrierNone, true> G1ParScanAndMarkExtRootClosure;
+typedef G1ParCopyClosure<G1BarrierKlass, true> G1ParScanAndMarkMetadataClosure;
 
 // The following closure type is defined in g1_specialized_oop_closures.hpp:
 //
-// typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacClosure;
+// typedef G1ParCopyClosure<G1BarrierEvac, false> G1ParScanHeapEvacClosure;
 
 // We use a separate closure to handle references during evacuation
 // failure processing.
 // We could have used another instance of G1ParScanHeapEvacClosure
 // (since that closure no longer assumes that the references it
 // handles point into the collection set).
 
-typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacFailureClosure;
+typedef G1ParCopyClosure<G1BarrierEvac, false> G1ParScanHeapEvacFailureClosure;
 
 class FilterIntoCSClosure: public ExtendedOopClosure {
   G1CollectedHeap* _g1;
   OopClosure* _oc;
   DirtyCardToOopClosure* _dcto_cl;