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
26package sun.management.counter.perf;
27
28import sun.management.counter.*;
29
30import java.nio.LongBuffer;
31import java.nio.ReadOnlyBufferException;
32
33public class PerfLongArrayCounter extends AbstractCounter
34       implements LongArrayCounter {
35
36    LongBuffer lb;
37
38    PerfLongArrayCounter(String name, Units u, Variability v,
39                         int flags, int vectorLength,
40                         LongBuffer lb) {
41
42        super(name, u, v, flags, vectorLength);
43        this.lb = lb;
44    }
45
46    public Object getValue() {
47        return longArrayValue();
48    }
49
50    /**
51     * Get a copy of the elements of the LongArrayCounter.
52     */
53    public long[] longArrayValue() {
54
55        lb.position(0);
56        long[] l = new long[lb.limit()];
57
58        // copy the bytes
59        lb.get(l);
60
61        return l;
62    }
63
64    /**
65     * Get the value of an element of the LongArrayCounter object.
66     */
67    public long longAt(int index) {
68        lb.position(index);
69        return lb.get();
70    }
71
72    /**
73     * Serialize as a snapshot object.
74     */
75    protected Object writeReplace() throws java.io.ObjectStreamException {
76        return new LongArrayCounterSnapshot(getName(),
77                                            getUnits(),
78                                            getVariability(),
79                                            getFlags(),
80                                            getVectorLength(),
81                                            longArrayValue());
82    }
83
84    private static final long serialVersionUID = -2733617913045487126L;
85}
86