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1 /*
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2 * Copyright 2003 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.debugger.cdbg;
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26
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27 import java.util.*;
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28 import sun.jvm.hotspot.debugger.*;
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29
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30 // a comparator used to sort LoadObjects by base address
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31
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32 public class LoadObjectComparator implements Comparator {
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33 public int compare(Object o1, Object o2) {
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34 LoadObject lo1 = (LoadObject) o1;
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35 LoadObject lo2 = (LoadObject) o2;
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36 Address base1 = lo1.getBase();
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37 Address base2 = lo2.getBase();
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38 long diff = base1.minus(base2);
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39 return (diff == 0)? 0 : ((diff < 0)? -1 : +1);
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40 }
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41
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42 public boolean equals(Object o) {
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43 if (o == null || !(o instanceof LoadObjectComparator)) {
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44 return false;
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45 }
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46 return true;
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47 }
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48 }
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