7045662: G1: OopsInHeapRegionClosure::set_region() should not be virtual

Summary: make the method non-virtual, remove five unused closures, and fix a couple of copyright typos.
Reviewed-by: stefank, johnc, poonam

src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp

@@ -2470,21 +2470,6 @@ record_collection_pause_start(double start_time_sec, size_t start_used) {
   G1CollectorPolicy::record_collection_pause_start(start_time_sec, start_used);
 }
 
-class NextNonCSElemFinder: public HeapRegionClosure {
-  HeapRegion* _res;
-public:
-  NextNonCSElemFinder(): _res(NULL) {}
-  bool doHeapRegion(HeapRegion* r) {
-    if (!r->in_collection_set()) {
-      _res = r;
-      return true;
-    } else {
-      return false;
-    }
-  }
-  HeapRegion* res() { return _res; }
-};
-
 class KnownGarbageClosure: public HeapRegionClosure {
   CollectionSetChooser* _hrSorted;
 

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

 /*
- * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -40,7 +40,7 @@ class OopsInHeapRegionClosure: public OopsInGenClosure {
 protected:
   HeapRegion* _from;
 public:
-  virtual void set_region(HeapRegion* from) { _from = from; }
+  void set_region(HeapRegion* from) { _from = from; }
 };
 
 class G1ParClosureSuper : public OopsInHeapRegionClosure {
@@ -161,44 +161,6 @@ public:
   bool do_header() { return false; }
 };
 
-class FilterInHeapRegionAndIntoCSClosure : public OopsInHeapRegionClosure {
-  G1CollectedHeap* _g1;
-  OopsInHeapRegionClosure* _oc;
-public:
-  FilterInHeapRegionAndIntoCSClosure(G1CollectedHeap* g1,
-                                     OopsInHeapRegionClosure* oc) :
-    _g1(g1), _oc(oc)
-  {}
-  template <class T> void do_oop_nv(T* p);
-  virtual void do_oop(oop* p) { do_oop_nv(p); }
-  virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
-  bool apply_to_weak_ref_discovered_field() { return true; }
-  bool do_header() { return false; }
-  void set_region(HeapRegion* from) {
-    _oc->set_region(from);
-  }
-};
-
-class FilterAndMarkInHeapRegionAndIntoCSClosure : public OopsInHeapRegionClosure {
-  G1CollectedHeap* _g1;
-  ConcurrentMark* _cm;
-  OopsInHeapRegionClosure* _oc;
-public:
-  FilterAndMarkInHeapRegionAndIntoCSClosure(G1CollectedHeap* g1,
-                                            OopsInHeapRegionClosure* oc,
-                                            ConcurrentMark* cm)
-  : _g1(g1), _oc(oc), _cm(cm) { }
-
-  template <class T> void do_oop_nv(T* p);
-  virtual void do_oop(oop* p) { do_oop_nv(p); }
-  virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
-  bool apply_to_weak_ref_discovered_field() { return true; }
-  bool do_header() { return false; }
-  void set_region(HeapRegion* from) {
-    _oc->set_region(from);
-  }
-};
-
 class FilterOutOfRegionClosure: public OopClosure {
   HeapWord* _r_bottom;
   HeapWord* _r_end;

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

 /*
- * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -66,27 +66,6 @@ template <class T> inline void FilterOutOfRegionClosure::do_oop_nv(T* p) {
   }
 }
 
-template <class T> inline void FilterInHeapRegionAndIntoCSClosure::do_oop_nv(T* p) {
-  T heap_oop = oopDesc::load_heap_oop(p);
-  if (!oopDesc::is_null(heap_oop) &&
-      _g1->obj_in_cs(oopDesc::decode_heap_oop_not_null(heap_oop)))
-    _oc->do_oop(p);
-}
-
-template <class T> inline void FilterAndMarkInHeapRegionAndIntoCSClosure::do_oop_nv(T* p) {
-  T heap_oop = oopDesc::load_heap_oop(p);
-  if (!oopDesc::is_null(heap_oop)) {
-    oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
-    HeapRegion* hr = _g1->heap_region_containing((HeapWord*) obj);
-    if (hr != NULL) {
-      if (hr->in_collection_set())
-        _oc->do_oop(p);
-      else if (!hr->is_young())
-        _cm->grayRoot(obj);
-    }
-  }
-}
-
 // This closure is applied to the fields of the objects that have just been copied.
 template <class T> inline void G1ParScanClosure::do_oop_nv(T* p) {
   T heap_oop = oopDesc::load_heap_oop(p);

src/share/vm/gc_implementation/g1/g1RemSet.cpp

@@ -66,41 +66,6 @@ void ct_freq_update_histo_and_reset() {
 }
 #endif
 
-
-class IntoCSOopClosure: public OopsInHeapRegionClosure {
-  OopsInHeapRegionClosure* _blk;
-  G1CollectedHeap* _g1;
-public:
-  IntoCSOopClosure(G1CollectedHeap* g1, OopsInHeapRegionClosure* blk) :
-    _g1(g1), _blk(blk) {}
-  void set_region(HeapRegion* from) {
-    _blk->set_region(from);
-  }
-  virtual void do_oop(narrowOop* p) { do_oop_work(p); }
-  virtual void do_oop(      oop* p) { do_oop_work(p); }
-  template <class T> void do_oop_work(T* p) {
-    oop obj = oopDesc::load_decode_heap_oop(p);
-    if (_g1->obj_in_cs(obj)) _blk->do_oop(p);
-  }
-  bool apply_to_weak_ref_discovered_field() { return true; }
-  bool idempotent() { return true; }
-};
-
-class VerifyRSCleanCardOopClosure: public OopClosure {
-  G1CollectedHeap* _g1;
-public:
-  VerifyRSCleanCardOopClosure(G1CollectedHeap* g1) : _g1(g1) {}
-
-  virtual void do_oop(narrowOop* p) { do_oop_work(p); }
-  virtual void do_oop(      oop* p) { do_oop_work(p); }
-  template <class T> void do_oop_work(T* p) {
-    oop obj = oopDesc::load_decode_heap_oop(p);
-    HeapRegion* to = _g1->heap_region_containing(obj);
-    guarantee(to == NULL || !to->in_collection_set(),
-              "Missed a rem set member.");
-  }
-};
-
 G1RemSet::G1RemSet(G1CollectedHeap* g1, CardTableModRefBS* ct_bs)
   : _g1(g1), _conc_refine_cards(0),
     _ct_bs(ct_bs), _g1p(_g1->g1_policy()),

src/share/vm/gc_implementation/g1/g1_specialized_oop_closures.hpp

 /*
- * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -45,8 +45,6 @@ typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacClosure;
 
 class FilterIntoCSClosure;
 class FilterOutOfRegionClosure;
-class FilterInHeapRegionAndIntoCSClosure;
-class FilterAndMarkInHeapRegionAndIntoCSClosure;
 
 #ifdef FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES
 #error "FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES already defined."
@@ -57,9 +55,7 @@ class FilterAndMarkInHeapRegionAndIntoCSClosure;
       f(G1ParScanClosure,_nv)                           \
       f(G1ParPushHeapRSClosure,_nv)                     \
       f(FilterIntoCSClosure,_nv)                        \
-      f(FilterOutOfRegionClosure,_nv)                   \
-      f(FilterInHeapRegionAndIntoCSClosure,_nv)         \
-      f(FilterAndMarkInHeapRegionAndIntoCSClosure,_nv)
+      f(FilterOutOfRegionClosure,_nv)
 
 #ifdef FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES
 #error "FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES already defined."

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

 /*
- * copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it

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

 /*
- * copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it