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

*** 201,10 ***
--- 201,14 ---
  
    // Stop and resume concurrent GC threads interfering with safepoint operations
    virtual void safepoint_synchronize_begin() {}
    virtual void safepoint_synchronize_end() {}
  
+   // TODO(tsan): _reserved MemRegion is not available to all collectors.
+   // Should we support collectors without _reserved MemRegion? See 8224815.
+   TSAN_ONLY(MemRegion reserved_region() const { return _reserved; })
+ 
    void initialize_reserved_region(const ReservedHeapSpace& rs);
  
    virtual size_t capacity() const = 0;
    virtual size_t used() const = 0;