Mercurial > hg > truffle
diff 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 |
---|---|
date | Sun, 11 Sep 2011 14:48:24 -0700 |
parents | |
children | 4bec1b1f7b33 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/agent/src/share/classes/sun/jvm/hotspot/oops/ArrayData.java Sun Sep 11 14:48:24 2011 -0700 @@ -0,0 +1,86 @@ +/* + * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. + * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + */ + +package sun.jvm.hotspot.oops; + +import java.io.*; +import java.util.*; +import sun.jvm.hotspot.debugger.*; +import sun.jvm.hotspot.runtime.*; +import sun.jvm.hotspot.types.*; +import sun.jvm.hotspot.utilities.*; + +// ArrayData +// +// A ArrayData is a base class for accessing profiling data which does +// not have a statically known size. It consists of an array length +// and an array start. +abstract class ArrayData extends ProfileData { + + static final int arrayLenOffSet = 0; + static final int arrayStartOffSet = 1; + + int arrayUintAt(int index) { + int aindex = index + arrayStartOffSet; + return uintAt(aindex); + } + int arrayIntAt(int index) { + int aindex = index + arrayStartOffSet; + return intAt(aindex); + } + Oop arrayOopAt(int index) { + int aindex = index + arrayStartOffSet; + return oopAt(aindex); + } + + // Code generation support for subclasses. + static int arrayElementOffset(int index) { + return cellOffset(arrayStartOffSet + index); + } + + ArrayData(DataLayout layout) { + super(layout); + } + + static int staticCellCount() { + return -1; + } + + int arrayLen() { + return intAt(arrayLenOffSet); + } + + public int cellCount() { + return arrayLen() + 1; + } + + // Code generation support + static int arrayLenOffset() { + return cellOffset(arrayLenOffSet); + } + static int arrayStartOffset() { + return cellOffset(arrayStartOffSet); + } + +}