1 /*
   2  * Copyright (c) 2002, 2003, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 package sun.jvm.hotspot.debugger.bsd;
  26 
  27 import sun.jvm.hotspot.debugger.*;
  28 
  29 class BsdThread implements ThreadProxy {
  30     private BsdDebugger debugger;
  31     private int           lwp_id;
  32 
  33     /** The address argument must be the address of the _thread_id in the
  34         OSThread. It's value is result ::gettid() call. */
  35     BsdThread(BsdDebugger debugger, Address addr) {
  36         this.debugger = debugger;
  37         // FIXME: size of data fetched here should be configurable.
  38         // However, making it so would produce a dependency on the "types"
  39         // package from the debugger package, which is not desired.
  40         this.lwp_id = (int) addr.getCIntegerAt(0, 4, true);
  41     }
  42 
  43     BsdThread(BsdDebugger debugger, long id) {
  44         this.debugger = debugger;
  45         this.lwp_id = (int) id;
  46     }
  47 
  48     public boolean equals(Object obj) {
  49         if ((obj == null) || !(obj instanceof BsdThread)) {
  50             return false;
  51         }
  52 
  53         return (((BsdThread) obj).lwp_id == lwp_id);
  54     }
  55 
  56     public int hashCode() {
  57         return lwp_id;
  58     }
  59 
  60     public String toString() {
  61         return Integer.toString(lwp_id);
  62     }
  63 
  64     public ThreadContext getContext() throws IllegalThreadStateException {
  65         long[] data = debugger.getThreadIntegerRegisterSet(lwp_id);
  66         ThreadContext context = BsdThreadContextFactory.createThreadContext(debugger);
  67         for (int i = 0; i < data.length; i++) {
  68             context.setRegister(i, data[i]);
  69         }
  70         return context;
  71     }
  72 
  73     public boolean canSetContext() throws DebuggerException {
  74         return false;
  75     }
  76 
  77     public void setContext(ThreadContext context)
  78       throws IllegalThreadStateException, DebuggerException {
  79         throw new DebuggerException("Unimplemented");
  80     }
  81 }