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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  
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  }