8316357: Serial: Remove unused GenCollectedHeap::space_containing

Reviewed-by: tschatzl

Author: albertnetymk

src/hotspot/share/gc/shared/genCollectedHeap.cpp

@@ -842,16 +842,6 @@ void GenCollectedHeap::object_iterate(ObjectClosure* cl) {
   _old_gen->object_iterate(cl);
 }
 
-Space* GenCollectedHeap::space_containing(const void* addr) const {
-  Space* res = _young_gen->space_containing(addr);
-  if (res != nullptr) {
-    return res;
-  }
-  res = _old_gen->space_containing(addr);
-  assert(res != nullptr, "Could not find containing space");
-  return res;
-}
-
 HeapWord* GenCollectedHeap::block_start(const void* addr) const {
   assert(is_in_reserved(addr), "block_start of address outside of heap");
   if (_young_gen->is_in_reserved(addr)) {

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

@@ -197,7 +197,6 @@ class GenCollectedHeap : public CollectedHeap {
   // Iteration functions.
   void oop_iterate(OopIterateClosure* cl);
   void object_iterate(ObjectClosure* cl) override;
-  Space* space_containing(const void* addr) const;
 
   // A CollectedHeap is divided into a dense sequence of "blocks"; that is,
   // each address in the (reserved) heap is a member of exactly

src/hotspot/share/gc/shared/generation.cpp

@@ -172,13 +172,6 @@ oop Generation::promote(oop obj, size_t obj_size) {
   return new_obj;
 }
 
-Space* Generation::space_containing(const void* p) const {
-  GenerationIsInReservedClosure blk(p);
-  // Cast away const
-  ((Generation*)this)->space_iterate(&blk);
-  return blk.sp;
-}
-
 // Some of these are mediocre general implementations.  Should be
 // overridden to get better performance.
 

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

@@ -176,10 +176,6 @@ class Generation: public CHeapObj<mtGC> {
     return _reserved.contains(p);
   }
 
-  // If some space in the generation contains the given "addr", return a
-  // pointer to that space, else return "null".
-  virtual Space* space_containing(const void* addr) const;
-
   // Iteration - do not use for time critical operations
   virtual void space_iterate(SpaceClosure* blk, bool usedOnly = false) = 0;