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comparison agent/src/share/classes/sun/jvm/hotspot/utilities/soql/JSJavaScriptEngine.java @ 6725:da91efe96a93

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6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author coleenp
date Sat, 01 Sep 2012 13:25:18 -0400
parents c18cbe5936b8
children
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6724:36d1d483d5d6 6725:da91efe96a93
1 /* 1 /*
2 * Copyright (c) 2004, 2007, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2004, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
147 String name = (String) clazz; 147 String name = (String) clazz;
148 if (name.startsWith("0x")) { 148 if (name.startsWith("0x")) {
149 // treat it as address 149 // treat it as address
150 VM vm = VM.getVM(); 150 VM vm = VM.getVM();
151 Address addr = vm.getDebugger().parseAddress(name); 151 Address addr = vm.getDebugger().parseAddress(name);
152 Oop oop = vm.getObjectHeap().newOop(addr.addOffsetToAsOopHandle(0)); 152 Metadata metadata = Metadata.instantiateWrapperFor(addr.addOffsetTo(0));
153 if (oop instanceof InstanceKlass) { 153 if (metadata instanceof InstanceKlass) {
154 ik = (InstanceKlass) oop; 154 ik = (InstanceKlass) metadata;
155 } else { 155 } else {
156 return Boolean.FALSE; 156 return Boolean.FALSE;
157 } 157 }
158 } else { 158 } else {
159 ik = SystemDictionaryHelper.findInstanceKlass((String) clazz); 159 ik = SystemDictionaryHelper.findInstanceKlass((String) clazz);
262 if mirror can not be created, return undefined. For other types, 262 if mirror can not be created, return undefined. For other types,
263 mirror is undefined. 263 mirror is undefined.
264 */ 264 */
265 public Object mirror(Object[] args) { 265 public Object mirror(Object[] args) {
266 Object o = args[0]; 266 Object o = args[0];
267 if (o != null && o instanceof JSJavaObject) { 267 Object res = UNDEFINED;
268 if (o != null) {
269 if (o instanceof JSJavaObject) {
268 Oop oop = ((JSJavaObject)o).getOop(); 270 Oop oop = ((JSJavaObject)o).getOop();
269 Object res = null;
270 try { 271 try {
271 if (oop instanceof InstanceKlass) {
272 res = getObjectReader().readClass((InstanceKlass) oop);
273 } else {
274 res = getObjectReader().readObject(oop); 272 res = getObjectReader().readObject(oop);
273 } catch (Exception e) {
274 if (debug) e.printStackTrace(getErrorStream());
275 }
276 } else if (o instanceof JSMetadata) {
277 Metadata metadata = ((JSMetadata)o).getMetadata();
278 try {
279 if (metadata instanceof InstanceKlass) {
280 res = getObjectReader().readClass((InstanceKlass) metadata);
275 } 281 }
276 } catch (Exception e) { 282 } catch (Exception e) {
277 if (debug) e.printStackTrace(getErrorStream()); 283 if (debug) e.printStackTrace(getErrorStream());
278 } 284 }
279 return (res != null)? res : UNDEFINED; 285 }
280 } else { 286 }
281 return UNDEFINED; 287 return res;
282 }
283 } 288 }
284 289
285 /** 290 /**
286 owner function gets owning thread of given JSJavaObjec, if any, else 291 owner function gets owning thread of given JSJavaObjec, if any, else
287 returns null. For other type of objects, the result is undefined. 292 returns null. For other type of objects, the result is undefined.