1 /* ThreadOnlyFilter.java -- a thread filter 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.filters; 41 42 import gnu.classpath.jdwp.event.Event; 43 import gnu.classpath.jdwp.exception.InvalidThreadException; 44 import gnu.classpath.jdwp.id.ThreadId; 45 46 /** 47 * An event filter which allows only events within a specific 48 * thread 49 * 50 * @author Keith Seitz (keiths@redhat.com) 51 */ 52 public class ThreadOnlyFilter 53 implements IEventFilter 54 { 55 // the thread 56 private ThreadId _tid; 57 58 /** 59 * Constructs a new <code>ThreadOnlyFilter</code> for the given 60 * thread id 61 * 62 * @param tid ID of the thread on which to filter 63 * @throws InvalidThreadException if the thread is not valid 64 */ ThreadOnlyFilter(ThreadId tid)65 public ThreadOnlyFilter (ThreadId tid) 66 throws InvalidThreadException 67 { 68 if (tid == null || tid.getReference().get () == null) 69 throw new InvalidThreadException (tid.getId ()); 70 71 _tid = tid; 72 } 73 74 /** 75 * Returns the thread in which to restrict events 76 * 77 * @return the thread's ID 78 */ getThread()79 public ThreadId getThread () 80 { 81 return _tid; 82 } 83 84 /** 85 * Does the given event match the filter? 86 * 87 * @param event the <code>Event</code> to scrutinize 88 */ matches(Event event)89 public boolean matches (Event event) 90 { 91 Object thread = event.getParameter (Event.EVENT_THREAD); 92 if (thread != null) 93 { 94 Thread eventThread = (Thread) thread; 95 Thread myThread = (Thread) _tid.getReference().get (); 96 return (eventThread == myThread); 97 } 98 99 return false; 100 } 101 } 102