Source for gnu.classpath.jdwp.event.ThreadEndEvent

   1: /* ThreadEndEvent.java -- An event specifying that a thread has died
   2:    Copyright (C) 2005 Free Software Foundation
   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: terms of your choice, provided that you also meet, for each linked
  32: independent module, the terms and conditions of the license of that
  33: module.  An independent module is a module which is not derived from
  34: or based on this library.  If you modify this library, you may extend
  35: this exception to your version of the library, but you are not
  36: obligated to do so.  If you do not wish to do so, delete this
  37: exception statement from your version. */
  38: 
  39: 
  40: package gnu.classpath.jdwp.event;
  41: 
  42: import gnu.classpath.jdwp.JdwpConstants;
  43: import gnu.classpath.jdwp.VMIdManager;
  44: import gnu.classpath.jdwp.id.ThreadId;
  45: 
  46: import java.io.DataOutputStream;
  47: import java.io.IOException;
  48: 
  49: /**
  50:  * "Notification of a completed thread in the target VM. The notification
  51:  * is generated by the dying thread before it terminates. Because of this
  52:  * timing, it is possible for VirtualMachine.allThreads to return this
  53:  * thread after this event is received.
  54:  *
  55:  * <p>Note that this event gives no information about the lifetime of the
  56:  * thread object. It may or may not be collected soon depending on what
  57:  * references exist in the target VM." -- JDWP 1.4.2
  58:  *
  59:  * @author Keith Seitz  (keiths@redhat.com)
  60:  */
  61: public class ThreadEndEvent
  62:   extends Event
  63: {
  64:   private Thread _thread;
  65: 
  66:   /**
  67:    * Constructs a new <code>ThreadEndEvent</code>
  68:    *
  69:    * @param thread  the deceased thread
  70:    */
  71:   public ThreadEndEvent (Thread thread)
  72:   {
  73:     super (JdwpConstants.EventKind.THREAD_END);
  74:     _thread = thread;
  75:   }
  76: 
  77:   /**
  78:    * Returns a specific filtering parameter for this event.
  79:    * Valid types are ThreadId.
  80:    *
  81:    * @param type  the type of parameter desired
  82:    * @returns the desired parameter or <code>null</code>
  83:    */
  84:   public Object getParameter (int type)
  85:   {
  86:     if (type == EVENT_THREAD)
  87:       return _thread;
  88: 
  89:     return null;
  90:   }
  91: 
  92:   /**
  93:    * Writes the event to the given stream
  94:    *
  95:    * @param outStream  the output stream to write the event to
  96:    */
  97:   protected void _writeData (DataOutputStream outStream)
  98:     throws IOException
  99:   {
 100:     VMIdManager idm = VMIdManager.getDefault();
 101:     ThreadId tid = (ThreadId) idm.getObjectId (_thread);
 102:     tid.write (outStream);
 103:   }
 104: }