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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: */ 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: */ 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: */ 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: }