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      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
     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
     67     getTimestamp()
     68     {
     69 	return timestamp;
     70     }
     71 }
     72