share/memory/virtualspace.hpp

rev 1 : G1GC+POGC+NVDIMM Patch with latest comments incorporated from all.

*** 31,45 ****
--- 31,50 ----
  
  class ReservedSpace {
    friend class VMStructs;
   protected:
    char*  _base;
+   char*  _nvdimm_base;
+   char*  _nvdimm_base_nv;
    size_t _size;
+   size_t _dram_size;
+   size_t _nvdimm_size;
    size_t _noaccess_prefix;
    size_t _alignment;
    bool   _special;
    int    _fd_for_heap;
+   int    _fd_for_nvdimm;
   private:
    bool   _executable;
  
    // ReservedSpace
    ReservedSpace(char* base, size_t size, size_t alignment, bool special,
*** 61,71 ****
--- 66,80 ----
                  char* requested_address = NULL);
    ReservedSpace(size_t size, size_t alignment, bool large, bool executable);
  
    // Accessors
    char*  base()            const { return _base;      }
+   char*  nvdimm_base()     const { return _nvdimm_base; }
+   int    nvdimm_fd()       const { return _fd_for_nvdimm; }
+   void   setup_fd(int fd)  {_fd_for_nvdimm = fd; } 
    size_t size()            const { return _size;      }
+   size_t nvdimm_size()     const { return _nvdimm_size;  }
    char*  end()             const { return _base + _size; }
    size_t alignment()       const { return _alignment; }
    bool   special()         const { return _special;   }
    bool   executable()      const { return _executable;   }
    size_t noaccess_prefix() const { return _noaccess_prefix;   }
*** 112,121 ****
--- 121,131 ----
                           size_t attach_point_alignment, char *aligned_HBMA,
                           char *upper_bound, size_t size, size_t alignment, bool large);
    void initialize_compressed_heap(const size_t size, size_t alignment, bool large);
    // Create protection page at the beginning of the space.
    void establish_noaccess_prefix();
+   void initialize_g1gc_nvdimm_dram_sizes(size_t size, size_t alignment);
   public:
    // Constructor. Tries to find a heap that is good for compressed oops.
    // heap_allocation_directory is the path to the backing memory for Java heap. When set, Java heap will be allocated
    // on the device which is managed by the file system where the directory resides.
    ReservedHeapSpace(size_t size, size_t forced_base_alignment, bool large, const char* heap_allocation_directory = NULL);