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annotate agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeIf.java @ 2042:0a8e0d4345b3 hs20-b05 jdk7-b124
7010068: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - first pass
Summary: Update the copyright to be 2010 on all changed files in OpenJDK
Reviewed-by: jcoomes
| author | trims |
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| date | Mon, 03 Jan 2011 15:30:05 -0800 |
| parents | c18cbe5936b8 |
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| 0 | 1 /* |
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2 * Copyright (c) 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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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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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.interpreter; | |
| 26 | |
| 27 import sun.jvm.hotspot.oops.*; | |
| 28 import sun.jvm.hotspot.utilities.*; | |
| 29 | |
| 30 public class BytecodeIf extends BytecodeJmp { | |
| 31 BytecodeIf(Method method, int bci) { | |
| 32 super(method, bci); | |
| 33 } | |
| 34 | |
| 35 public int getTargetBCI() { | |
| 36 return bci() + javaShortAt(1); | |
| 37 } | |
| 38 | |
| 39 public void verify() { | |
| 40 if (Assert.ASSERTS_ENABLED) { | |
| 41 Assert.that(isValid(), "check if"); | |
| 42 } | |
| 43 } | |
| 44 | |
| 45 public boolean isValid() { | |
| 46 int jcode = javaCode(); | |
| 47 return (jcode >= Bytecodes._ifeq && jcode <= Bytecodes._if_acmpne) || | |
| 48 jcode == Bytecodes._ifnull || jcode == Bytecodes._ifnonnull; | |
| 49 } | |
| 50 | |
| 51 public static BytecodeIf at(Method method, int bci) { | |
| 52 BytecodeIf b = new BytecodeIf(method, bci); | |
| 53 if (Assert.ASSERTS_ENABLED) { | |
| 54 b.verify(); | |
| 55 } | |
| 56 return b; | |
| 57 } | |
| 58 | |
| 59 /** Like at, but returns null if the BCI is not at some ifxxx bytecode */ | |
| 60 public static BytecodeIf atCheck(Method method, int bci) { | |
| 61 BytecodeIf b = new BytecodeIf(method, bci); | |
| 62 return (b.isValid() ? b : null); | |
| 63 } | |
| 64 | |
| 65 public static BytecodeIf at(BytecodeStream bcs) { | |
| 66 return new BytecodeIf(bcs.method(), bcs.bci()); | |
| 67 } | |
| 68 } |