Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/oops/JumpData.java @ 6842:b9a9ed0f8eeb
7197424: update copyright year to match last edit in jdk8 hotspot repository
Summary: Update copyright year to 2012 for relevant files
Reviewed-by: dholmes, coleenp
| author | mikael |
|---|---|
| date | Tue, 09 Oct 2012 10:09:34 -0700 |
| parents | 4bec1b1f7b33 |
| children |
| rev | line source |
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| 3939 | 1 /* |
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b9a9ed0f8eeb
7197424: update copyright year to match last edit in jdk8 hotspot repository
mikael
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2 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 3939 | 4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
| 3939 | 8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
| 3939 | 14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 3939 | 18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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minqi
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21 * questions. |
| 3939 | 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 // JumpData | |
| 35 // | |
| 36 // A JumpData is used to access profiling information for a direct | |
| 37 // branch. It is a counter, used for counting the number of branches, | |
| 38 // plus a data displacement, used for realigning the data pointer to | |
| 39 // the corresponding target bci. | |
| 40 public class JumpData extends ProfileData { | |
| 41 static final int takenOffSet = 0; | |
| 42 static final int displacementOffSet = 1; | |
| 43 static final int jumpCellCount = 2; | |
| 44 | |
| 45 public JumpData(DataLayout layout) { | |
| 46 super(layout); | |
| 47 //assert(layout.tag() == DataLayout.jumpDataTag || | |
| 48 // layout.tag() == DataLayout.branchDataTag, "wrong type"); | |
| 49 } | |
| 50 | |
| 51 static int staticCellCount() { | |
| 52 return jumpCellCount; | |
| 53 } | |
| 54 | |
| 55 public int cellCount() { | |
| 56 return staticCellCount(); | |
| 57 } | |
| 58 | |
| 59 // Direct accessor | |
| 60 int taken() { | |
| 61 return uintAt(takenOffSet); | |
| 62 } | |
| 63 | |
| 64 int displacement() { | |
| 65 return intAt(displacementOffSet); | |
| 66 } | |
| 67 | |
| 68 // Code generation support | |
| 69 static int takenOffset() { | |
| 70 return cellOffset(takenOffSet); | |
| 71 } | |
| 72 | |
| 73 static int displacementOffset() { | |
| 74 return cellOffset(displacementOffSet); | |
| 75 } | |
| 76 | |
| 77 public void printDataOn(PrintStream st) { | |
| 78 printShared(st, "JumpData"); | |
| 79 st.println("taken(" + taken() + ") displacement(" + displacement() + ")"); | |
| 80 } | |
| 81 } |