206   // In many heaps, there will be a need to perform some initialization activities

   206   // In many heaps, there will be a need to perform some initialization activities

   207   // after the Universe is fully formed, but before general heap allocation is allowed.

   207   // after the Universe is fully formed, but before general heap allocation is allowed.

   208   // This is the correct place to place such initialization methods.

   208   // This is the correct place to place such initialization methods.

   209   virtual void post_initialize() = 0;

   209   virtual void post_initialize() = 0;

   210 

   210 

   211   MemRegion reserved_region() const { return _reserved; }

   214   MemRegion reserved_region() const { return _reserved; }

   212   address base() const { return (address)reserved_region().start(); }

   215   address base() const { return (address)reserved_region().start(); }

   213 

   216 

   214   virtual size_t capacity() const = 0;

   217   virtual size_t capacity() const = 0;

   215   virtual size_t used() const = 0;

   218   virtual size_t used() const = 0;