Mercurial > hg > truffle
comparison agent/src/share/classes/sun/jvm/hotspot/oops/ArrayData.java @ 3939:f6f3bb0ee072
7088955: add C2 IR support to the SA
Reviewed-by: kvn
author | never |
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date | Sun, 11 Sep 2011 14:48:24 -0700 |
parents | |
children | 4bec1b1f7b33 |
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3938:e6b1331a51d2 | 3939:f6f3bb0ee072 |
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1 /* | |
2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. | |
3 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. | |
4 * | |
5 * | |
6 * | |
7 * | |
8 * | |
9 * | |
10 * | |
11 * | |
12 * | |
13 * | |
14 * | |
15 * | |
16 * | |
17 * | |
18 * | |
19 * | |
20 * | |
21 * | |
22 * | |
23 */ | |
24 | |
25 package sun.jvm.hotspot.oops; | |
26 | |
27 import java.io.*; | |
28 import java.util.*; | |
29 import sun.jvm.hotspot.debugger.*; | |
30 import sun.jvm.hotspot.runtime.*; | |
31 import sun.jvm.hotspot.types.*; | |
32 import sun.jvm.hotspot.utilities.*; | |
33 | |
34 // ArrayData | |
35 // | |
36 // A ArrayData is a base class for accessing profiling data which does | |
37 // not have a statically known size. It consists of an array length | |
38 // and an array start. | |
39 abstract class ArrayData extends ProfileData { | |
40 | |
41 static final int arrayLenOffSet = 0; | |
42 static final int arrayStartOffSet = 1; | |
43 | |
44 int arrayUintAt(int index) { | |
45 int aindex = index + arrayStartOffSet; | |
46 return uintAt(aindex); | |
47 } | |
48 int arrayIntAt(int index) { | |
49 int aindex = index + arrayStartOffSet; | |
50 return intAt(aindex); | |
51 } | |
52 Oop arrayOopAt(int index) { | |
53 int aindex = index + arrayStartOffSet; | |
54 return oopAt(aindex); | |
55 } | |
56 | |
57 // Code generation support for subclasses. | |
58 static int arrayElementOffset(int index) { | |
59 return cellOffset(arrayStartOffSet + index); | |
60 } | |
61 | |
62 ArrayData(DataLayout layout) { | |
63 super(layout); | |
64 } | |
65 | |
66 static int staticCellCount() { | |
67 return -1; | |
68 } | |
69 | |
70 int arrayLen() { | |
71 return intAt(arrayLenOffSet); | |
72 } | |
73 | |
74 public int cellCount() { | |
75 return arrayLen() + 1; | |
76 } | |
77 | |
78 // Code generation support | |
79 static int arrayLenOffset() { | |
80 return cellOffset(arrayLenOffSet); | |
81 } | |
82 static int arrayStartOffset() { | |
83 return cellOffset(arrayStartOffSet); | |
84 } | |
85 | |
86 } |