agent/src/share/classes/sun/jvm/hotspot/utilities/FindObjectByType.java

/*
 * Copyright (c) 2000, 2005, 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.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

package sun.jvm.hotspot.utilities;

import java.util.*;

import sun.jvm.hotspot.oops.*;

public class FindObjectByType implements HeapVisitor {
  private Klass type;
  private List results = new ArrayList();

  public FindObjectByType(Klass type) {
    this.type = type;
  }

  /** Returns a List of Oops */
  public List getResults() {
    return results;
  }

  public void prologue(long size) {}
  public void epilogue()          {}

  public boolean doObj(Oop obj) {
    if (obj.getKlass().equals(type)) {
      results.add(obj);
    }
        return false;
  }
}