Mercurial > hg > graal-jvmci-8
view agent/src/share/classes/sun/jvm/hotspot/oops/BranchData.java @ 3972:4f93f0d00802
7059019: G1: add G1 support to the SA
Summary: Extend the SA to recognize the G1CollectedHeap and implement any code that's needed by our serviceability tools (jmap, jinfo, jstack, etc.) that depend on the SA.
Reviewed-by: never, poonam, johnc
author | tonyp |
---|---|
date | Tue, 20 Sep 2011 09:59:59 -0400 |
parents | f6f3bb0ee072 |
children | 4bec1b1f7b33 |
line wrap: on
line source
/* * 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.*; // BranchData // // A BranchData is used to access profiling data for a two-way branch. // It consists of taken and notTaken counts as well as a data displacement // for the taken case. public class BranchData extends JumpData { static final int notTakenOffSet = jumpCellCount; static final int branchCellCount = notTakenOffSet + 1; public BranchData(DataLayout layout) { super(layout); //assert(layout.tag() == DataLayout.branchDataTag, "wrong type"); } static int staticCellCount() { return branchCellCount; } public int cellCount() { return staticCellCount(); } // Direct accessor int notTaken() { return uintAt(notTakenOffSet); } // Code generation support static int notTakenOffset() { return cellOffset(notTakenOffSet); } static int branchDataSize() { return cellOffset(branchCellCount); } public void printDataOn(PrintStream st) { printShared(st, "BranchData"); st.println("taken(" + taken() + ") displacement(" + displacement() + ")"); tab(st); st.println("not taken(" + notTaken() + ")"); } }