| /* CollocatedOrbs.java -- Handles collocations |
| Copyright (C) 2006 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.CORBA; |
| |
| import gnu.CORBA.Poa.gnuServantObject; |
| |
| import java.net.InetAddress; |
| import java.net.UnknownHostException; |
| import java.util.ArrayList; |
| |
| import org.omg.CORBA.LocalObject; |
| import org.omg.CORBA.portable.Delegate; |
| import org.omg.CORBA.portable.ObjectImpl; |
| |
| /** |
| * This class provides support for the direct method invocations without |
| * involving the network in the case when both ORBs run on the same java |
| * virtual machine. Special attention is only needed when call is made |
| * between two independent ORBs, instantiated via ORB.init. The call to the |
| * object, obtained via IOR reference from the ORB where it was locally |
| * connected is always local anyway. |
| * |
| * For security reasons it may be sensible to keep this class and all support |
| * package private. |
| * |
| * @author Audrius Meskauskas |
| */ |
| class CollocatedOrbs |
| { |
| /** |
| * This field is used in automated Classpath specific testing to disable |
| * the direct calls. |
| */ |
| static boolean DIRECT_CALLS_ALLOWED = true; |
| |
| /** |
| * Containts the references of the all running GNU Classpath ORBs in the |
| * local virtual machine. GNU Classpath ORBs register themselves here when |
| * created and unregister when either ORB.destroy is called or in the |
| * finalizer. |
| */ |
| private static ArrayList orbs = new ArrayList(); |
| |
| /** |
| * The address of the local host. |
| */ |
| static String localHost; |
| |
| static |
| { |
| try |
| { |
| localHost = InetAddress.getLocalHost().getHostAddress(); |
| } |
| catch (UnknownHostException ex) |
| { |
| throw new InternalError("Local host is not accessible:" + ex); |
| } |
| } |
| |
| /** |
| * Register the new ORB |
| * |
| * @param orb the orb to register |
| */ |
| static void registerOrb(OrbFunctional orb) |
| { |
| if (DIRECT_CALLS_ALLOWED) |
| synchronized (orbs) |
| { |
| assert ! orbs.contains(orb); |
| orbs.add(orb); |
| } |
| } |
| |
| /** |
| * Unregister the ORB. The ORB will no longer be reacheable locally but may |
| * be reacheable via network as if it would be remote. |
| * |
| * @param orb the orb to unregister |
| */ |
| static void unregisterOrb(OrbFunctional orb) |
| { |
| if (DIRECT_CALLS_ALLOWED) |
| synchronized (orbs) |
| { |
| assert orbs.contains(orb); |
| orbs.remove(orb); |
| } |
| } |
| |
| /** |
| * Search the possibly local object. If the IOR is not local or none of the |
| * found ORBs of this virtual machine knows about it, null is returned. |
| * |
| * @param ior the IOR to search |
| * @return the found local CORBA object or null in not found. |
| */ |
| static org.omg.CORBA.Object searchLocalObject(IOR ior) |
| { |
| if (! DIRECT_CALLS_ALLOWED && ! ior.Internet.host.equals(localHost)) |
| return null; |
| |
| synchronized (orbs) |
| { |
| OrbFunctional orb; |
| org.omg.CORBA.Object object; |
| for (int i = 0; i < orbs.size(); i++) |
| { |
| orb = (OrbFunctional) orbs.get(i); |
| object = orb.find_connected_object(ior.key, ior.Internet.port); |
| if (object != null) |
| { |
| if (object instanceof SafeForDirectCalls) |
| { |
| return object; |
| } |
| else if (object instanceof gnuServantObject) |
| { |
| return object; |
| } |
| } |
| } |
| } |
| return null; |
| } |
| |
| } |