src/hotspot/share/oops/arrayOop.hpp

rev 49674 : 8198285: More consistent Access API for arraycopy

*** 86,95 ****
--- 86,107 ----
    // Returns the address of the first element. The elements in the array will not
    // relocate from this address until a subsequent thread transition.
    inline void* base(BasicType type) const;
    inline void* base_raw(BasicType type) const; // GC barrier invariant
  
+   template <typename T>
+   static T* obj_offset_to_raw(arrayOop obj, size_t offset_in_bytes, T* raw) {
+     if (obj != NULL) {
+       assert(raw == NULL, "either raw or in-heap");
+       char* base = reinterpret_cast<char*>((void*) obj);
+       raw = reinterpret_cast<T*>(base + offset_in_bytes);
+     } else {
+       assert(raw != NULL, "either raw or in-heap");
+     }
+     return raw;
+   }
+ 
    // Tells whether index is within bounds.
    bool is_within_bounds(int index) const        { return 0 <= index && index < length(); }
  
    // Accessors for instance variable which is not a C++ declared nonstatic
    // field.