Initial revision

From-SVN: r102074

1 files changed, 138 insertions, 0 deletions

diff --git a/libjava/classpath/java/rmi/dgc/VMID.java b/libjava/classpath/java/rmi/dgc/VMID.java
new file mode 100644
index 0000000..f960d9c
--- /dev/null
+++ b/libjava/classpath/java/rmi/dgc/VMID.java
@@ -0,0 +1,138 @@
+/* VMID.java
+   Copyright (c) 1996, 1997, 1998, 1999 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 java.rmi.dgc;
+
+import java.io.Serializable;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.rmi.server.UID;
+
+public final class VMID	implements Serializable
+{
+  static final long serialVersionUID = -538642295484486218L;
+  
+  static final boolean areWeUnique;
+  
+  static byte[] localAddr;
+
+  private byte[] addr;
+  
+  private UID uid;
+
+  static
+  {
+    byte[] addr;
+    boolean awu = true;
+    try {
+      addr = InetAddress.getLocalHost().getAddress();
+      if (addr[0] == 127 && addr[1] == 0 && addr[2] == 0 && addr[3] == 1) {
+        awu = false;
+      }
+    }
+    catch (UnknownHostException _) {
+      addr = new byte[]{ 127, 0, 0, 1 };
+      awu = false;
+    }
+    localAddr = addr;
+    areWeUnique = awu;
+  }
+
+  public VMID()
+  {
+    addr = localAddr;
+    uid = new UID();
+  }
+
+  /**
+   * @deprecated
+   */
+  public static boolean isUnique ()
+  {
+    return areWeUnique;
+  }
+
+  public int hashCode ()
+  {
+    return super.hashCode();
+  }
+
+  public boolean equals (Object obj)
+  {
+    if (!(obj instanceof VMID))
+      {
+        return false;
+      }
+    
+    VMID other = (VMID) obj;
+    if (addr.length != other.addr.length)
+      {
+        return false;
+      }
+    
+    for (int i = addr.length - 1; i >= 0; i--)
+      {
+        if (addr[i] != other.addr[i])
+          {
+            return false;
+          }
+      }
+    
+    return uid.equals(other.uid);
+  }
+
+  public String toString ()
+  {
+    StringBuffer buf = new StringBuffer ("[VMID: ");
+    
+    for (int i = 0; i < addr.length; i++)
+      {
+        if (i > 0)
+          {
+            buf.append (".");
+          }
+        
+        buf.append (Integer.toString (addr [i]));
+      }
+    
+    buf.append (" ");
+    buf.append (uid.toString ());
+    buf.append ("]");
+
+    return buf.toString();
+  }
+}