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annotate agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeIinc.java @ 3944:35c656d0b685
7090654: nightly failures after 7086585
Reviewed-by: kvn
author | never |
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date | Wed, 14 Sep 2011 13:57:32 -0700 |
parents | c18cbe5936b8 |
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0 | 1 /* |
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2 * Copyright (c) 2002, 2005, 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 |
c18cbe5936b8
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.interpreter; | |
26 | |
27 import sun.jvm.hotspot.oops.*; | |
28 import sun.jvm.hotspot.utilities.*; | |
29 | |
30 public class BytecodeIinc extends BytecodeWideable { | |
31 BytecodeIinc(Method method, int bci) { | |
32 super(method, bci); | |
33 } | |
34 | |
35 public int getIncrement() { | |
36 // increment is signed | |
37 return (isWide()) ? (int) javaShortAt(3) : (int) javaByteAt(2); | |
38 } | |
39 | |
40 public void verify() { | |
41 if (Assert.ASSERTS_ENABLED) { | |
42 Assert.that(isValid(), "check iinc"); | |
43 } | |
44 } | |
45 | |
46 public boolean isValid() { | |
47 return javaCode() == Bytecodes._iinc; | |
48 } | |
49 | |
50 public static BytecodeIinc at(Method method, int bci) { | |
51 BytecodeIinc b = new BytecodeIinc(method, bci); | |
52 if (Assert.ASSERTS_ENABLED) { | |
53 b.verify(); | |
54 } | |
55 return b; | |
56 } | |
57 | |
58 /** Like at, but returns null if the BCI is not at iinc */ | |
59 public static BytecodeIinc atCheck(Method method, int bci) { | |
60 BytecodeIinc b = new BytecodeIinc(method, bci); | |
61 return (b.isValid() ? b : null); | |
62 } | |
63 | |
64 public static BytecodeIinc at(BytecodeStream bcs) { | |
65 return new BytecodeIinc(bcs.method(), bcs.bci()); | |
66 } | |
67 | |
68 public String toString() { | |
69 StringBuffer buf = new StringBuffer(); | |
70 buf.append("iinc"); | |
71 buf.append(spaces); | |
72 buf.append('#'); | |
73 buf.append(Integer.toString(getLocalVarIndex())); | |
74 buf.append(" by "); | |
75 buf.append(Integer.toString(getIncrement())); | |
76 return buf.toString(); | |
77 } | |
78 } |