--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/jdk.jvmstat/share/classes/sun/jvmstat/perfdata/monitor/protocol/rmi/RemoteVmManager.java	Sun Aug 17 15:54:13 2014 +0100
@@ -0,0 +1,114 @@
+/*
+ * 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.jvmstat.perfdata.monitor.protocol.rmi;
+
+import java.util.*;
+import java.util.regex.*;
+import java.io.*;
+import java.rmi.RemoteException;
+import sun.jvmstat.monitor.*;
+import sun.jvmstat.monitor.event.*;
+import sun.jvmstat.monitor.remote.*;
+
+/**
+ * Class for managing the RemoteMonitoredVm instances on a remote system.
+ * <p>
+ * This class is responsible for the mechanism that detects the active
+ * HotSpot Java Virtual Machines on the remote host and possibly for a
+ * specific user. The ability to detect all possible HotSpot Java Virtual
+ * Machines on the remote host may be limited by the permissions of the
+ * principal running the RMI server application on the remote host.
+ *
+ * @author Brian Doherty
+ * @since 1.5
+ */
+public class RemoteVmManager {
+
+    private RemoteHost remoteHost;
+    private String user;
+
+    /**
+     * Creates a RemoteVmManager instance for the remote system.
+     * <p>
+     * Manages RemoteMonitordVm instances for which the principal
+     * running the remote server has appropriate permissions.
+     *
+     * @param remoteHost the remote proxy object to the RMI server on
+     *                   the remote system.
+     */
+    public RemoteVmManager(RemoteHost remoteHost) {
+        this(remoteHost, null);
+    }
+
+    /**
+     * Creates a RemoteVmManager instance for the given user.
+     * <p>
+     * Manages RemoteMonitoredVm instances for all remote Java Virtual
+     * machines owned by the specified user on the remote system. The
+     * RMI server on the remote system must have the appropriate permissions
+     * to access the named users Java Virtual Machines.
+     *
+     * @param remoteHost the remote proxy object to the RMI server on
+     *                   the remote system.
+     * @param user the name of the user
+     */
+    public RemoteVmManager(RemoteHost remoteHost, String user) {
+        this.user = user;
+        this.remoteHost = remoteHost;
+    }
+
+    /**
+     * Return the current set of monitorable Java Virtual Machines.
+     * <p>
+     * The set returned by this method depends on the user name passed
+     * to the constructor. If no user name was specified, then this
+     * method will return all candidate JVMs on the system. Otherwise,
+     * only the JVMs for the given user will be returned. This assumes
+     * that the RMI server process has the appropriate permissions to
+     * access the target set of JVMs.
+     *
+     * @return Set - the Set of monitorable Java Virtual Machines
+     */
+    public Set<Integer> activeVms() throws MonitorException {
+        int[] active = null;
+
+        try {
+            active = remoteHost.activeVms();
+
+        } catch (RemoteException e) {
+            throw new MonitorException("Error communicating with remote host: "
+                                       + e.getMessage(), e);
+        }
+
+        Set<Integer> activeSet = new HashSet<Integer>(active.length);
+
+        for (int i = 0; i < active.length; i++) {
+            activeSet.add(active[i]);
+        }
+
+        return activeSet;
+    }
+}