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;
27
28/**
29 * The base class for a performance counter.
30 *
31 * @author   Brian Doherty
32 */
33public interface Counter extends java.io.Serializable {
34
35    /**
36     * Returns the name of this performance counter
37     */
38    public String getName();
39
40    /**
41     * Returns the Units for this performance counter
42     */
43    public Units getUnits();
44
45    /**
46     * Returns the Variability for this performance counter
47     */
48    public Variability getVariability();
49
50    /**
51     * Returns true if this performance counter is a vector
52     */
53    public boolean isVector();
54
55    /**
56     * Returns the length of the vector
57     */
58    public int getVectorLength();
59
60    /**
61     * Returns an Object that encapsulates the data value of this counter
62     */
63    public Object getValue();
64
65    /**
66     * Returns {@code true} if this counter is an internal counter.
67     */
68    public boolean isInternal();
69
70    /**
71     * Return the flags associated with the counter.
72     */
73    public int getFlags();
74}
75