Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/utilities/AddressOps.java @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | a61af66fc99e |
| children |
| rev | line source |
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| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2000, 2002, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.utilities; | |
| 26 | |
| 27 import sun.jvm.hotspot.debugger.*; | |
| 28 | |
| 29 /** Helper class with operations on addresses. Solves the problem of | |
| 30 one or both of the arguments being null and needing to call | |
| 31 methods like greaterThan(), lessThan(), etc. on them. */ | |
| 32 | |
| 33 public class AddressOps { | |
| 34 /** Returns true if a1 is less than a2. Either or both may be null. */ | |
| 35 public static boolean lessThan(Address a1, Address a2) { | |
| 36 if (a2 == null) { | |
| 37 return false; | |
| 38 } else if (a1 == null) { | |
| 39 return true; | |
| 40 } else { | |
| 41 return a1.lessThan(a2); | |
| 42 } | |
| 43 } | |
| 44 | |
| 45 /** Returns true if a1 is less than or equal to a2. Either or both may be null. */ | |
| 46 public static boolean lessThanOrEqual(Address a1, Address a2) { | |
| 47 if (a2 == null) { | |
| 48 return (a1 == null); | |
| 49 } else if (a1 == null) { | |
| 50 return true; | |
| 51 } else { | |
| 52 return a1.lessThanOrEqual(a2); | |
| 53 } | |
| 54 } | |
| 55 | |
| 56 /** Returns true if a1 is greater than a2. Either or both may be null. */ | |
| 57 public static boolean greaterThan(Address a1, Address a2) { | |
| 58 if (a1 == null) { | |
| 59 return false; | |
| 60 } else if (a2 == null) { | |
| 61 return true; | |
| 62 } else { | |
| 63 return a1.greaterThan(a2); | |
| 64 } | |
| 65 } | |
| 66 | |
| 67 /** Returns true if a1 is greater than or equal to a2. Either or both may be null. */ | |
| 68 public static boolean greaterThanOrEqual(Address a1, Address a2) { | |
| 69 if (a1 == null) { | |
| 70 return (a2 == null); | |
| 71 } else if (a2 == null) { | |
| 72 return true; | |
| 73 } else { | |
| 74 return a1.greaterThanOrEqual(a2); | |
| 75 } | |
| 76 } | |
| 77 | |
| 78 /** Returns true if a1 is equal to a2. Either or both may be null. */ | |
| 79 public static boolean equal(Address a1, Address a2) { | |
| 80 if ((a1 == null) && (a2 == null)) { | |
| 81 return true; | |
| 82 } | |
| 83 | |
| 84 if ((a1 == null) || (a2 == null)) { | |
| 85 return false; | |
| 86 } | |
| 87 | |
| 88 return (a1.equals(a2)); | |
| 89 } | |
| 90 | |
| 91 /** Shorthand for {@link #lessThan} */ | |
| 92 public static boolean lt(Address a1, Address a2) { | |
| 93 return lessThan(a1, a2); | |
| 94 } | |
| 95 | |
| 96 /** Shorthand for {@link #lessThanOrEqual} */ | |
| 97 public static boolean lte(Address a1, Address a2) { | |
| 98 return lessThanOrEqual(a1, a2); | |
| 99 } | |
| 100 | |
| 101 /** Shorthand for {@link #greaterThan} */ | |
| 102 public static boolean gt(Address a1, Address a2) { | |
| 103 return greaterThan(a1, a2); | |
| 104 } | |
| 105 | |
| 106 /** Shorthand for {@link #greaterThanOrEqual} */ | |
| 107 public static boolean gte(Address a1, Address a2) { | |
| 108 return greaterThanOrEqual(a1, a2); | |
| 109 } | |
| 110 | |
| 111 /** Returns maximum of the two addresses */ | |
| 112 public static Address max(Address a1, Address a2) { | |
| 113 return (gt(a1, a2) ? a1 : a2); | |
| 114 } | |
| 115 | |
| 116 /** Returns minimum of the two addresses */ | |
| 117 public static Address min(Address a1, Address a2) { | |
| 118 return (lt(a1, a2) ? a1 : a2); | |
| 119 } | |
| 120 } |