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comparison agent/src/share/classes/sun/jvm/hotspot/oops/OopUtilities.java @ 180:b9ebd46331d2

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6710654: SAJDI failures with Compressed Oops Summary: Use correct offset for the java.lang.Class _klass field in SA. Reviewed-by: jrose, never
author kvn
date Wed, 04 Jun 2008 14:03:48 -0700
parents ba764ed4b6f2
children d1605aabd0a1
comparison
equal deleted inserted replaced
174:510f98a80563 180:b9ebd46331d2
272 private static void initClassFields() { 272 private static void initClassFields() {
273 if (hcKlassField == null) { 273 if (hcKlassField == null) {
274 // hc_klass is a HotSpot magic field and hence we can't 274 // hc_klass is a HotSpot magic field and hence we can't
275 // find it from InstanceKlass for java.lang.Class. 275 // find it from InstanceKlass for java.lang.Class.
276 TypeDataBase db = VM.getVM().getTypeDataBase(); 276 TypeDataBase db = VM.getVM().getTypeDataBase();
277 int hcKlassOffset = (int) Oop.getHeaderSize(); 277 int hcKlassOffset = (int) Instance.getHeaderSize();
278 try { 278 try {
279 hcKlassOffset += (db.lookupIntConstant("java_lang_Class::hc_klass_offset").intValue() * 279 hcKlassOffset += (db.lookupIntConstant("java_lang_Class::hc_klass_offset").intValue() *
280 db.getAddressSize()); 280 VM.getVM().getHeapOopSize());
281 } catch (RuntimeException re) { 281 } catch (RuntimeException re) {
282 // ignore, currently java_lang_Class::hc_klass_offset is zero 282 // ignore, currently java_lang_Class::hc_klass_offset is zero
283 } 283 }
284 if (VM.getVM().isCompressedOopsEnabled()) { 284 if (VM.getVM().isCompressedOopsEnabled()) {
285 hcKlassField = new NarrowOopField(new NamedFieldIdentifier("hc_klass"), hcKlassOffset, true); 285 hcKlassField = new NarrowOopField(new NamedFieldIdentifier("hc_klass"), hcKlassOffset, true);