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diff agent/src/share/classes/sun/jvm/hotspot/utilities/RobustOopDeterminator.java @ 6848:8e47bac5643a

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7054512: Compress class pointers after perm gen removal Summary: support of compress class pointers in the compilers. Reviewed-by: kvn, twisti
author roland
date Tue, 09 Oct 2012 10:11:38 +0200
parents da91efe96a93
children
line wrap: on
line diff
--- a/agent/src/share/classes/sun/jvm/hotspot/utilities/RobustOopDeterminator.java	Mon Oct 08 17:04:00 2012 -0700
+++ b/agent/src/share/classes/sun/jvm/hotspot/utilities/RobustOopDeterminator.java	Tue Oct 09 10:11:38 2012 +0200
@@ -53,9 +53,8 @@
   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");
+    if (VM.getVM().isCompressedKlassPointersEnabled()) {
+      klassField = type.getAddressField("_metadata._compressed_klass");
     } else {
       klassField = type.getAddressField("_metadata._klass");
     }
@@ -70,7 +69,11 @@
     }
     try {
       // Try to instantiate the Klass
-      Metadata.instantiateWrapperFor(klassField.getValue(oop));
+      if (VM.getVM().isCompressedKlassPointersEnabled()) {
+        Metadata.instantiateWrapperFor(oop.getCompKlassAddressAt(klassField.getOffset()));
+      } else {
+        Metadata.instantiateWrapperFor(klassField.getValue(oop));
+      }
           return true;
         }
     catch (AddressException e) {