1 /* 2 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 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 // CounterData 35 // 36 // A CounterData corresponds to a simple counter. 37 public class CounterData extends BitData { 38 39 static final int countOff = 0; 40 static final int counterCellCount = 1; 41 CounterData(DataLayout layout)42 public CounterData(DataLayout layout) { 43 super(layout); 44 } 45 staticCellCount()46 static int staticCellCount() { 47 return counterCellCount; 48 } 49 cellCount()50 public int cellCount() { 51 return staticCellCount(); 52 } 53 54 // Direct accessor count()55 int count() { 56 return uintAt(countOff); 57 } 58 59 // Code generation support countOffset()60 static int countOffset() { 61 return cellOffset(countOff); 62 } counterDataSize()63 static int counterDataSize() { 64 return cellOffset(counterCellCount); 65 } 66 printDataOn(PrintStream st)67 public void printDataOn(PrintStream st) { 68 printShared(st, "CounterData"); 69 st.println("count(" + count() + ")"); 70 } 71 } 72