1 /* 2 * Copyright (c) 2003, 2004, 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.management.counter.perf; 27 28 import sun.management.counter.*; 29 import java.nio.LongBuffer; 30 import java.nio.ReadOnlyBufferException; 31 32 public class PerfLongCounter extends AbstractCounter 33 implements LongCounter { 34 35 LongBuffer lb; 36 37 // package private 38 PerfLongCounter(String name, Units u, Variability v, int flags, 39 LongBuffer lb) { 40 super(name, u, v, flags); 41 this.lb = lb; 42 } 43 44 public Object getValue() { 45 return Long.valueOf(lb.get(0)); 46 } 47 48 /** 49 * Get the value of this Long performance counter 50 */ 51 public long longValue() { 52 return lb.get(0); 53 } 54 55 /** 56 * Serialize as a snapshot object. 57 */ 58 protected Object writeReplace() throws java.io.ObjectStreamException { 59 return new LongCounterSnapshot(getName(), 60 getUnits(), 61 getVariability(), 62 getFlags(), 63 longValue()); 64 } 65 66 private static final long serialVersionUID = 857711729279242948L; 67 }