Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/oops/JumpData.java @ 4006:436b4a3231bf
7098194: integrate macosx-port changes
Summary: Integrate bsd-port/hotspot and macosx-port/hotspot changes as of 2011.09.29.
Reviewed-by: kvn, dholmes, never, phh
Contributed-by: Christos Zoulas <christos@zoulas.com>, Greg Lewis <glewis@eyesbeyond.com>, Kurt Miller <kurt@intricatesoftware.com>, Alexander Strange <astrange@apple.com>, Mike Swingler <swingler@apple.com>, Roger Hoover <rhoover@apple.com>, Victor Hernandez <vhernandez@apple.com>, Pratik Solanki <psolanki@apple.com>
author | dcubed |
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date | Thu, 13 Oct 2011 09:35:42 -0700 |
parents | f6f3bb0ee072 |
children | 4bec1b1f7b33 |
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/* * 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.*; // JumpData // // A JumpData is used to access profiling information for a direct // branch. It is a counter, used for counting the number of branches, // plus a data displacement, used for realigning the data pointer to // the corresponding target bci. public class JumpData extends ProfileData { static final int takenOffSet = 0; static final int displacementOffSet = 1; static final int jumpCellCount = 2; public JumpData(DataLayout layout) { super(layout); //assert(layout.tag() == DataLayout.jumpDataTag || // layout.tag() == DataLayout.branchDataTag, "wrong type"); } static int staticCellCount() { return jumpCellCount; } public int cellCount() { return staticCellCount(); } // Direct accessor int taken() { return uintAt(takenOffSet); } int displacement() { return intAt(displacementOffSet); } // Code generation support static int takenOffset() { return cellOffset(takenOffSet); } static int displacementOffset() { return cellOffset(displacementOffSet); } public void printDataOn(PrintStream st) { printShared(st, "JumpData"); st.println("taken(" + taken() + ") displacement(" + displacement() + ")"); } }