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1: /* VMID.java 2: Copyright (c) 1996, 1997, 1998, 1999 Free Software Foundation, Inc. 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: package java.rmi.dgc; 39: 40: import java.io.Serializable; 41: import java.net.InetAddress; 42: import java.net.UnknownHostException; 43: import java.rmi.server.UID; 44: 45: public final class VMID implements Serializable 46: { 47: static final long serialVersionUID = -538642295484486218L; 48: 49: static final boolean areWeUnique; 50: 51: static byte[] localAddr; 52: 53: private byte[] addr; 54: 55: private UID uid; 56: 57: static 58: { 59: byte[] addr; 60: boolean awu = true; 61: try { 62: addr = InetAddress.getLocalHost().getAddress(); 63: if (addr[0] == 127 && addr[1] == 0 && addr[2] == 0 && addr[3] == 1) { 64: awu = false; 65: } 66: } 67: catch (UnknownHostException _) { 68: addr = new byte[]{ 127, 0, 0, 1 }; 69: awu = false; 70: } 71: localAddr = addr; 72: areWeUnique = awu; 73: } 74: 75: public VMID() 76: { 77: addr = localAddr; 78: uid = new UID(); 79: } 80: 81: /** 82: * @deprecated 83: */ 84: public static boolean isUnique () 85: { 86: return areWeUnique; 87: } 88: 89: public int hashCode () 90: { 91: return super.hashCode(); 92: } 93: 94: public boolean equals (Object obj) 95: { 96: if (!(obj instanceof VMID)) 97: { 98: return false; 99: } 100: 101: VMID other = (VMID) obj; 102: if (addr.length != other.addr.length) 103: { 104: return false; 105: } 106: 107: for (int i = addr.length - 1; i >= 0; i--) 108: { 109: if (addr[i] != other.addr[i]) 110: { 111: return false; 112: } 113: } 114: 115: return uid.equals(other.uid); 116: } 117: 118: public String toString () 119: { 120: StringBuffer buf = new StringBuffer ("[VMID: "); 121: 122: for (int i = 0; i < addr.length; i++) 123: { 124: if (i > 0) 125: { 126: buf.append ("."); 127: } 128: 129: buf.append (Integer.toString (addr [i])); 130: } 131: 132: buf.append (" "); 133: buf.append (uid.toString ()); 134: buf.append ("]"); 135: 136: return buf.toString(); 137: } 138: }
GNU Classpath (0.20) |