1 /* 2 * Copyright (c) 2000, 2005, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 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 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 package sun.jvm.hotspot.utilities; 26 27 import java.util.*; 28 29 import sun.jvm.hotspot.oops.*; 30 31 public class FindObjectByType implements HeapVisitor { 32 private Klass type; 33 private List results = new ArrayList(); 34 FindObjectByType(Klass type)35 public FindObjectByType(Klass type) { 36 this.type = type; 37 } 38 39 /** Returns a List of Oops */ getResults()40 public List getResults() { 41 return results; 42 } 43 prologue(long size)44 public void prologue(long size) {} epilogue()45 public void epilogue() {} 46 doObj(Oop obj)47 public boolean doObj(Oop obj) { 48 if (obj.getKlass().equals(type)) { 49 results.add(obj); 50 } 51 return false; 52 } 53 } 54