01: /*
02: * Copyright 2003-2004 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any questions.
24: */
25:
26: package sun.management.counter;
27:
28: /**
29: * The base class for a performance counter.
30: *
31: * @author Brian Doherty
32: * @version 1.11, 05/05/07
33: */
34: public interface Counter extends java.io.Serializable {
35:
36: /**
37: * Returns the name of this performance counter
38: */
39: public String getName();
40:
41: /**
42: * Returns the Units for this performance counter
43: */
44: public Units getUnits();
45:
46: /**
47: * Returns the Variability for this performance counter
48: */
49: public Variability getVariability();
50:
51: /**
52: * Returns true if this performance counter is a vector
53: */
54: public boolean isVector();
55:
56: /**
57: * Returns the length of the vector
58: */
59: public int getVectorLength();
60:
61: /**
62: * Returns an Object that encapsulates the data value of this counter
63: */
64: public Object getValue();
65:
66: /**
67: * Returns <tt>true</tt> if this counter is an internal counter.
68: */
69: public boolean isInternal();
70:
71: /**
72: * Return the flags associated with the counter.
73: */
74: public int getFlags();
75: }
|