8007763: Refactoring: split up compute_generation_free_space() into two functions for class PSAdaptiveSizePolicy Summary: split up compute_generation_free_space() into two functions: compute_eden_space_size() + compute_old_gen_free_space(), each of which (if needed) can be reused without executing an overhead of the other. Reviewed-by: jmasa, tschatzl Contributed-by: tamao <tao.mao@oracle.com>

// I can cast any old thing I want to this type object:
public class You_Have_Been_P0wned {
  // Make a bunch of int-fields so I can peek & poke it
  int _a;
  int _b;
  int _c;
  int _d;

}