| /* |
| * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.tools.jstatd; |
| |
| import java.util.*; |
| import java.nio.*; |
| import java.io.*; |
| import java.net.*; |
| import java.rmi.*; |
| import java.rmi.server.*; |
| import sun.jvmstat.monitor.*; |
| import sun.jvmstat.monitor.event.*; |
| import sun.jvmstat.monitor.remote.*; |
| |
| /** |
| * Concrete implementation of the RemoteHost interface for the HotSpot |
| * PerfData <em>rmi:</em> protocol. |
| * <p> |
| * This class provides remote access to the instrumentation exported |
| * by HotSpot Java Virtual Machines through the PerfData shared memory |
| * interface. |
| * |
| * @author Brian Doherty |
| * @since 1.5 |
| */ |
| public class RemoteHostImpl implements RemoteHost, HostListener { |
| |
| private MonitoredHost monitoredHost; |
| private Set<Integer> activeVms; |
| |
| public RemoteHostImpl() throws MonitorException { |
| try { |
| monitoredHost = MonitoredHost.getMonitoredHost("localhost"); |
| } catch (URISyntaxException e) { } |
| |
| activeVms = monitoredHost.activeVms(); |
| monitoredHost.addHostListener(this); |
| } |
| |
| public RemoteVm attachVm(int lvmid, String mode) |
| throws RemoteException, MonitorException { |
| Integer v = lvmid; |
| RemoteVm stub = null; |
| StringBuilder sb = new StringBuilder(); |
| |
| sb.append("local://").append(lvmid).append("@localhost"); |
| if (mode != null) { |
| sb.append("?mode=").append(mode); |
| } |
| |
| String vmidStr = sb.toString(); |
| |
| try { |
| VmIdentifier vmid = new VmIdentifier(vmidStr); |
| MonitoredVm mvm = monitoredHost.getMonitoredVm(vmid); |
| RemoteVmImpl rvm = new RemoteVmImpl((BufferedMonitoredVm)mvm); |
| stub = (RemoteVm) UnicastRemoteObject.exportObject(rvm, 0); |
| } |
| catch (URISyntaxException e) { |
| throw new RuntimeException("Malformed VmIdentifier URI: " |
| + vmidStr, e); |
| } |
| return stub; |
| } |
| |
| public void detachVm(RemoteVm rvm) throws RemoteException { |
| rvm.detach(); |
| } |
| |
| public int[] activeVms() throws MonitorException { |
| Object[] vms = null; |
| int[] vmids = null; |
| |
| vms = monitoredHost.activeVms().toArray(); |
| vmids = new int[vms.length]; |
| |
| for (int i = 0; i < vmids.length; i++) { |
| vmids[i] = ((Integer)vms[i]).intValue(); |
| } |
| return vmids; |
| } |
| |
| public void vmStatusChanged(VmStatusChangeEvent ev) { |
| synchronized(this.activeVms) { |
| activeVms.retainAll(ev.getActive()); |
| } |
| } |
| |
| public void disconnected(HostEvent ev) { |
| // we only monitor the local host, so this event shouldn't occur. |
| } |
| } |