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

rev 12906 : [mq]: gc_interface

*** 24,33 ****
--- 24,34 ----
  
  #ifndef SHARE_VM_GC_SHARED_GENCOLLECTEDHEAP_HPP
  #define SHARE_VM_GC_SHARED_GENCOLLECTEDHEAP_HPP
  
  #include "gc/shared/adaptiveSizePolicy.hpp"
+ #include "gc/shared/cardTableModRefBS.hpp"
  #include "gc/shared/collectedHeap.hpp"
  #include "gc/shared/collectorPolicy.hpp"
  #include "gc/shared/generation.hpp"
  
  class StrongRootsScope;
*** 268,297 ****
    virtual size_t tlab_capacity(Thread* thr) const;
    virtual size_t tlab_used(Thread* thr) const;
    virtual size_t unsafe_max_tlab_alloc(Thread* thr) const;
    virtual HeapWord* allocate_new_tlab(size_t size);
  
-   // Can a compiler initialize a new object without store barriers?
-   // This permission only extends from the creation of a new object
-   // via a TLAB up to the first subsequent safepoint.
-   virtual bool can_elide_tlab_store_barriers() const {
-     return true;
-   }
- 
-   virtual bool card_mark_must_follow_store() const {
-     return UseConcMarkSweepGC;
-   }
- 
-   // We don't need barriers for stores to objects in the
-   // young gen and, a fortiori, for initializing stores to
-   // objects therein. This applies to DefNew+Tenured and ParNew+CMS
-   // only and may need to be re-examined in case other
-   // kinds of collectors are implemented in the future.
-   virtual bool can_elide_initializing_store_barrier(oop new_obj) {
-     return is_in_young(new_obj);
-   }
- 
    // The "requestor" generation is performing some garbage collection
    // action for which it would be useful to have scratch space.  The
    // requestor promises to allocate no more than "max_alloc_words" in any
    // older generation (via promotion say.)   Any blocks of space that can
    // be provided are returned as a list of ScratchBlocks, sorted by
--- 269,278 ----
*** 513,520 ****
--- 494,507 ----
    void gc_prologue(bool full);
    void gc_epilogue(bool full);
  
  public:
    void stop();
+   void safepoint_synchronize_begin();
+   void safepoint_synchronize_end();
+ 
+   CardTableModRefBS *barrier_set() {
+     return barrier_set_cast<CardTableModRefBS>(CollectedHeap::barrier_set());
+   }
  };
  
  #endif // SHARE_VM_GC_SHARED_GENCOLLECTEDHEAP_HPP