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src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/oops/java_lang_Class.java

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*** 1,7 **** /* ! * Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. --- 1,7 ---- /* ! * Copyright (c) 2011, 2017, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.
*** 39,48 **** --- 39,49 ---- // initialize fields for java.lang.Class public class java_lang_Class { // java.lang.Class fields static int klassOffset; + static int arrayKlassOffset; static IntField oopSizeField; static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) {
*** 54,63 **** --- 55,65 ---- private static synchronized void initialize(TypeDataBase db) { // klass and oop_size are HotSpot magic fields and hence we can't // find them from InstanceKlass for java.lang.Class. Type jlc = db.lookupType("java_lang_Class"); klassOffset = (int) jlc.getCIntegerField("_klass_offset").getValue(); + arrayKlassOffset = (int) jlc.getCIntegerField("_array_klass_offset").getValue(); int oopSizeOffset = (int) jlc.getCIntegerField("_oop_size_offset").getValue(); oopSizeField = new IntField(new NamedFieldIdentifier("oop_size"), oopSizeOffset, true); } /** get Klass* field at offset hc_klass_offset from a java.lang.Class object */
*** 67,72 **** --- 69,93 ---- /** get oop_size field at offset oop_size_offset from a java.lang.Class object */ public static long getOopSize(Oop aClass) { return java_lang_Class.oopSizeField.getValue(aClass); } + + /** + * Returns the Java name for this Java mirror + */ + public static String asExternalName(Oop aClass) { + Klass k = java_lang_Class.asKlass(aClass); + if (k == null) { // primitive array + BasicType type = BasicType.T_VOID; + ArrayKlass ak = (ArrayKlass)Metadata.instantiateWrapperFor( + aClass.getHandle().getAddressAt(arrayKlassOffset)); + if (ak != null) { + type = BasicType.intToBasicType(ak.getElementType()); + } + return type.getName(); + } else { + return k.getName().asString(); + } + } + }
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