117 lines
3.1 KiB
Java
117 lines
3.1 KiB
Java
/*
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Copyright (c) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.rmi.dgc;
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import java.io.Serializable;
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import java.rmi.server.UID;
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import java.net.InetAddress;
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import java.net.UnknownHostException;
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public final class VMID
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implements Serializable {
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static final long serialVersionUID = -538642295484486218L;
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static final boolean areWeUnique;
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static byte[] localAddr;
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private byte[] addr;
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private UID uid;
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static {
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byte[] addr;
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boolean awu = true;
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try {
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addr = InetAddress.getLocalHost().getAddress();
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if (addr[0] == 127 && addr[1] == 0 && addr[2] == 0 && addr[3] == 1) {
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awu = false;
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}
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}
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catch (UnknownHostException _) {
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addr = new byte[]{ 127, 0, 0, 1 };
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awu = false;
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}
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localAddr = addr;
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areWeUnique = awu;
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}
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public VMID() {
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addr = localAddr;
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uid = new UID();
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}
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public static boolean isUnique() {
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return (areWeUnique);
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}
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public int hashCode() {
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return (super.hashCode());
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}
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public boolean equals(Object obj) {
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if (!(obj instanceof VMID)) {
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return (false);
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}
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VMID other = (VMID)obj;
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if (addr.length != other.addr.length) {
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return (false);
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}
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for (int i = addr.length - 1; i >= 0; i--) {
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if (addr[i] != other.addr[i]) {
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return (false);
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}
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}
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return (uid.equals(other.uid));
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}
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public String toString() {
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StringBuffer buf = new StringBuffer("[VMID: ");
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for (int i = 0; i < addr.length; i++) {
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if (i > 0) {
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buf.append(".");
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}
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buf.append(Integer.toString(addr[i]));
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}
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buf.append(" ");
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buf.append(uid.toString());
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buf.append("]");
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return (buf.toString());
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}
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}
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