8370234: Remove CardTableBarrierSet::write_region

Reviewed-by: tschatzl, fandreuzzi

Author: albertnetymk

src/hotspot/share/gc/g1/g1BarrierSet.cpp

@@ -111,7 +111,7 @@ void G1BarrierSet::write_ref_array_pre(narrowOop* dst, size_t count, bool dest_u
   }
 }
 
-void G1BarrierSet::write_region(JavaThread* thread, MemRegion mr) {
+void G1BarrierSet::write_region(MemRegion mr) {
   if (mr.is_empty()) {
     return;
   }

src/hotspot/share/gc/g1/g1BarrierSet.hpp

@@ -99,8 +99,7 @@ class G1BarrierSet: public CardTableBarrierSet {
   template <DecoratorSet decorators, typename T>
   void write_ref_field_pre(T* field);
 
-  inline void write_region(MemRegion mr);
-  void write_region(JavaThread* thread, MemRegion mr);
+  virtual void write_region(MemRegion mr);
 
   template <DecoratorSet decorators = DECORATORS_NONE, typename T>
   void write_ref_field_post(T* field);

src/hotspot/share/gc/g1/g1BarrierSet.inline.hpp

@@ -68,10 +68,6 @@ inline void G1BarrierSet::write_ref_field_pre(T* field) {
   enqueue(field);
 }
 
-inline void G1BarrierSet::write_region(MemRegion mr) {
-  write_region(JavaThread::current(), mr);
-}
-
 template <DecoratorSet decorators, typename T>
 inline void G1BarrierSet::write_ref_field_post(T* field) {
   volatile CardValue* byte = _card_table->byte_for(field);

src/hotspot/share/gc/shared/cardTableBarrierSet.hpp

@@ -61,10 +61,6 @@ class CardTableBarrierSet: public ModRefBarrierSet {
 
   CardTable* card_table() const { return _card_table; }
 
-  void write_region(JavaThread* thread, MemRegion mr) {
-    write_region(mr);
-  }
-
   // Record a reference update. Note that these versions are precise!
   // The scanning code has to handle the fact that the write barrier may be
   // either precise or imprecise. We make non-virtual inline variants of

src/hotspot/share/gc/shared/modRefBarrierSet.hpp

@@ -53,8 +53,6 @@ class ModRefBarrierSet: public BarrierSet {
 
   // Causes all refs in "mr" to be assumed to be modified (by this JavaThread).
   virtual void write_region(MemRegion mr) = 0;
-  // Causes all refs in "mr" to be assumed to be modified by the given JavaThread.
-  virtual void write_region(JavaThread* thread, MemRegion mr) = 0;
 
   // Operations on arrays, or general regions (e.g., for "clone") may be
   // optimized by some barriers.