FindObjectByType.java revision 9883:903a2e023ffb 
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
25package sun.jvm.hotspot.utilities;
26
27import java.util.*;
28
29import sun.jvm.hotspot.oops.*;
30
31public class FindObjectByType implements HeapVisitor {
32  private Klass type;
33  private List results = new ArrayList();
34
35  public FindObjectByType(Klass type) {
36    this.type = type;
37  }
38
39  /** Returns a List of Oops */
40  public List getResults() {
41    return results;
42  }
43
44  public void prologue(long size) {}
45  public void epilogue()          {}
46
47  public boolean doObj(Oop obj) {
48    if (obj.getKlass().equals(type)) {
49      results.add(obj);
50    }
51        return false;
52  }
53}
54