1 /* 2 * Copyright (c) 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 26 package sun.jvmstat.monitor.event; 27 28 import java.util.EventListener; 29 30 /** 31 * Interface for listeners of MonitoredVm events. 32 * 33 * @author Brian Doherty 34 * @since 1.5 35 * @see sun.jvmstat.monitor.MonitoredVm 36 */ 37 public interface VmListener extends EventListener { 38 39 /** 40 * Invoked when instrumentation objects are inserted into or removed 41 * from the MonitoredVm. 42 * 43 * @param event the object describing the event. 44 */ monitorStatusChanged(MonitorStatusChangeEvent event)45 void monitorStatusChanged(MonitorStatusChangeEvent event); 46 47 /** 48 * Invoked when instrumentation objects are updated. This event is 49 * generated at a fixed interval as determined by the polling rate 50 * of the MonitoredVm that the VmListener is registered with. 51 * 52 * @param event the object describing the event. 53 */ monitorsUpdated(VmEvent event)54 void monitorsUpdated(VmEvent event); 55 56 /** 57 * Invoked when the connection to the MonitoredVm has disconnected 58 * due to communication errors. 59 * 60 * @param event the object describing the event. 61 */ disconnected(VmEvent event)62 void disconnected(VmEvent event); 63 } 64