1 /*
   2  * Copyright 2002 Sun Microsystems, Inc.  All Rights Reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any questions.
  22  *
  23  */
  24 
  25 package sun.jvm.hotspot.debugger.remote;
  26 
  27 import sun.jvm.hotspot.debugger.*;
  28 
  29 public abstract class RemoteThread implements ThreadProxy {
  30    protected RemoteDebuggerClient debugger;
  31    protected Address addr;
  32    protected long id;
  33 
  34    public RemoteThread(RemoteDebuggerClient debugger, Address addr) {
  35       this.debugger = debugger;
  36       this.addr = addr;
  37       this.id = -1L;  // invalid, but don't depend on it. check null for addr
  38    }
  39 
  40    public RemoteThread(RemoteDebuggerClient debugger, long id) {
  41       this.debugger = debugger;
  42       this.addr = null;
  43       this.id = id;
  44    }
  45 
  46    public boolean canSetContext() throws DebuggerException {
  47      return false;
  48    }
  49 
  50    public void setContext(ThreadContext context)
  51      throws IllegalThreadStateException, DebuggerException {
  52      throw new DebuggerException("Unimplemented");
  53    }
  54 
  55    public boolean equals(Object o) {
  56       if (o == null) {
  57          return false;
  58       }
  59 
  60       if (! (o instanceof RemoteThread)) {
  61          return false;
  62       }
  63       RemoteThread other = (RemoteThread)o;
  64       boolean isOtherAddress = (other.addr != null);
  65       boolean isAddress = (addr != null);
  66 
  67       if (isAddress) {
  68          return (isOtherAddress)? debugger.areThreadsEqual(addr, other.addr) :
  69                                   debugger.areThreadsEqual(addr, other.id);
  70       } else {
  71          return (isOtherAddress)? debugger.areThreadsEqual(id, other.addr) :
  72                                   debugger.areThreadsEqual(id, other.id);
  73       }
  74    }
  75 
  76    public int hashCode() {
  77       return (addr != null)? debugger.getThreadHashCode(addr) :
  78                              debugger.getThreadHashCode(id);
  79    }
  80 
  81    public String toString() {
  82       return "t@ " + hashCode();
  83    }
  84 }