agent/src/share/classes/sun/jvm/hotspot/utilities/RobustOopDeterminator.java

rev 3688 : 7054512: Compress class pointers after perm gen removal
Summary: support of compress class pointers in the compilers.
Reviewed-by:

*** 51,63 ****
    }
  
    private static void initialize(TypeDataBase db) {
      Type type = db.lookupType("oopDesc");
  
!     if (VM.getVM().isCompressedHeadersEnabled()) {
!       // klassField = type.getNarrowOopField("_metadata._compressed_klass");
!       throw new InternalError("unimplemented");
      } else {
        klassField = type.getAddressField("_metadata._klass");
      }
    }
  
--- 51,62 ----
    }
  
    private static void initialize(TypeDataBase db) {
      Type type = db.lookupType("oopDesc");
  
!     if (VM.getVM().isCompressedKlassPointersEnabled()) {
!       klassField = type.getAddressField("_metadata._compressed_klass");
      } else {
        klassField = type.getAddressField("_metadata._klass");
      }
    }
  
*** 68,78 ****
--- 67,81 ----
      if (!VM.getVM().getUniverse().isIn(oop)) {
        return false;
      }
      try {
        // Try to instantiate the Klass
+       if (VM.getVM().isCompressedKlassPointersEnabled()) {
+         Metadata.instantiateWrapperFor(oop.getCompKlassAddressAt(klassField.getOffset()));
+       } else {
          Metadata.instantiateWrapperFor(klassField.getValue(oop));
+       }
            return true;
          }
      catch (AddressException e) {
        return false;
      }