src/hotspot/share/memory/metaspaceShared.hpp

*** 186,195 ****
--- 186,196 ----
    static address _i2i_entry_code_buffers;
    static size_t  _i2i_entry_code_buffers_size;
    static size_t  _core_spaces_size;
    static void* _shared_metaspace_static_top;
    static intx _relocation_delta;
+   static char* _default_base_address;
   public:
    enum {
      // core archive spaces
      mc = 0,  // miscellaneous code for method trampolines
      rw = 1,  // read-write shared space in the heap
*** 348,357 ****
--- 349,364 ----
  
    static void allocate_cloned_cpp_vtptrs();
    static intptr_t* fix_cpp_vtable_for_dynamic_archive(MetaspaceObj::Type msotype, address obj);
    static void initialize_ptr_marker(CHeapBitMap* ptrmap);
  
+   // This is the base address as specified by -XX:SharedBaseAddress during -Xshare:dump.
+   // Both the base/top archives are written using this as their base address.
+   static char* default_base_address() {
+     return _default_base_address;
+   }
+ 
    // Non-zero if the archive(s) need to be mapped a non-default location due to ASLR.
    static intx relocation_delta() { return _relocation_delta; }
    static intx final_delta();
    static bool use_windows_memory_mapping() {
      const bool is_windows = (NOT_WINDOWS(false) WINDOWS_ONLY(true));