1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  *
26  * ident	"%Z%%M%	%I%	%E% SMI"
27  */
28 package org.opensolaris.os.dtrace;
29 
30 import java.util.EventObject;
31 
32 /**
33  * An event indicating a state change in a DTrace {@link Consumer}.
34  *
35  * @see ConsumerListener
36  *
37  * @author Tom Erickson
38  */
39 public class ConsumerEvent extends EventObject {
40     static final long serialVersionUID = 1659441401142401810L;
41 
42     /** @serial */
43     private long timestamp;
44 
45     /**
46      * Creates a consumer event with the given source {@link Consumer}
47      * and nanosecond timestamp.
48      *
49      * @param source  the {@link Consumer} that is the source of the
50      * event
51      * @param timeNanos  nanosecond timestamp of this event
52      */
53     public
ConsumerEvent(Object source, long timeNanos)54     ConsumerEvent(Object source, long timeNanos)
55     {
56 	super(source);
57 	timestamp = timeNanos;
58     }
59 
60     /**
61      * Gets the nanosecond timestamp of this event.
62      *
63      * @return nanosecond timestamp of the event on the system where the
64      * consumer opened a native DTrace library handle
65      */
66     public long
getTimestamp()67     getTimestamp()
68     {
69 	return timestamp;
70     }
71 }
72