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| 1 | /* | ||
| 2 | * Copyright (c) 1999, 2008, 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. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package com.sun.tools.example.debug.bdi; | ||
| 27 | |||
| 28 | import com.sun.jdi.*; | ||
| 29 | import com.sun.jdi.event.*; | ||
| 30 | |||
| 31 | import com.sun.tools.example.debug.event.*; | ||
| 32 | |||
| 33 | import javax.swing.SwingUtilities; | ||
| 34 | |||
| 35 | /** | ||
| 36 | */ | ||
| 37 | class JDIEventSource extends Thread { | ||
| 38 | |||
| 39 | private /*final*/ EventQueue queue; | ||
| 40 | private /*final*/ Session session; | ||
| 41 | private /*final*/ ExecutionManager runtime; | ||
| 42 | private final JDIListener firstListener = new FirstListener(); | ||
| 43 | |||
| 44 | private boolean wantInterrupt; //### Hack | ||
| 45 | |||
| 46 | /** | ||
| 47 | * Create event source. | ||
| 48 | */ | ||
| 49 | JDIEventSource(Session session) { | ||
| 50 | super("JDI Event Set Dispatcher"); | ||
| 51 | this.session = session; | ||
| 52 | this.runtime = session.runtime; | ||
| 53 | this.queue = session.vm.eventQueue(); | ||
| 54 | } | ||
| 55 | |||
| 56 | @Override | ||
| 57 | public void run() { | ||
| 58 | try { | ||
| 59 | runLoop(); | ||
| 60 | } catch (Exception exc) { | ||
| 61 | //### Do something different for InterruptedException??? | ||
| 62 | // just exit | ||
| 63 | } | ||
| 64 | session.running = false; | ||
| 65 | } | ||
| 66 | |||
| 67 | private void runLoop() throws InterruptedException { | ||
| 68 | AbstractEventSet es; | ||
| 69 | do { | ||
| 70 | EventSet jdiEventSet = queue.remove(); | ||
| 71 | es = AbstractEventSet.toSpecificEventSet(jdiEventSet); | ||
| 72 | session.interrupted = es.suspendedAll(); | ||
| 73 | dispatchEventSet(es); | ||
| 74 | } while(!(es instanceof VMDisconnectEventSet)); | ||
| 75 | } | ||
| 76 | |||
| 77 | //### Gross foul hackery! | ||
| 78 | private void dispatchEventSet(final AbstractEventSet es) { | ||
| 79 | SwingUtilities.invokeLater(new Runnable() { | ||
| 80 | @Override | ||
| 81 | public void run() { | ||
| 82 | boolean interrupted = es.suspendedAll(); | ||
| 83 | es.notify(firstListener); | ||
| 84 | boolean wantInterrupt = JDIEventSource.this.wantInterrupt; | ||
| 85 | for (JDIListener jl : session.runtime.jdiListeners) { | ||
| 86 | es.notify(jl); | ||
| 87 | } | ||
| 88 | if (interrupted && !wantInterrupt) { | ||
| 89 | session.interrupted = false; | ||
| 90 | //### Catch here is a hack | ||
| 91 | try { | ||
| 92 | session.vm.resume(); | ||
| 93 | } catch (VMDisconnectedException ee) {} | ||
| 94 | } | ||
| 95 | if (es instanceof ThreadDeathEventSet) { | ||
| 96 | ThreadReference t = ((ThreadDeathEventSet)es).getThread(); | ||
| 97 | session.runtime.removeThreadInfo(t); | ||
| 98 | } | ||
| 99 | } | ||
| 100 | }); | ||
| 101 | } | ||
| 102 | |||
| 103 | private void finalizeEventSet(AbstractEventSet es) { | ||
| 104 | if (session.interrupted && !wantInterrupt) { | ||
| 105 | session.interrupted = false; | ||
| 106 | //### Catch here is a hack | ||
| 107 | try { | ||
| 108 | session.vm.resume(); | ||
| 109 | } catch (VMDisconnectedException ee) {} | ||
| 110 | } | ||
| 111 | if (es instanceof ThreadDeathEventSet) { | ||
| 112 | ThreadReference t = ((ThreadDeathEventSet)es).getThread(); | ||
| 113 | session.runtime.removeThreadInfo(t); | ||
| 114 | } | ||
| 115 | } | ||
| 116 | |||
| 117 | //### This is a Hack, deal with it | ||
| 118 | private class FirstListener implements JDIListener { | ||
| 119 | |||
| 120 | @Override | ||
| 121 | public void accessWatchpoint(AccessWatchpointEventSet e) { | ||
| 122 | session.runtime.validateThreadInfo(); | ||
| 123 | wantInterrupt = true; | ||
| 124 | } | ||
| 125 | |||
| 126 | @Override | ||
| 127 | public void classPrepare(ClassPrepareEventSet e) { | ||
| 128 | wantInterrupt = false; | ||
| 129 | runtime.resolve(e.getReferenceType()); | ||
| 130 | } | ||
| 131 | |||
| 132 | @Override | ||
| 133 | public void classUnload(ClassUnloadEventSet e) { | ||
| 134 | wantInterrupt = false; | ||
| 135 | } | ||
| 136 | |||
| 137 | @Override | ||
| 138 | public void exception(ExceptionEventSet e) { | ||
| 139 | wantInterrupt = true; | ||
| 140 | } | ||
| 141 | |||
| 142 | @Override | ||
| 143 | public void locationTrigger(LocationTriggerEventSet e) { | ||
| 144 | session.runtime.validateThreadInfo(); | ||
| 145 | wantInterrupt = true; | ||
| 146 | } | ||
| 147 | |||
| 148 | @Override | ||
| 149 | public void modificationWatchpoint(ModificationWatchpointEventSet e) { | ||
| 150 | session.runtime.validateThreadInfo(); | ||
| 151 | wantInterrupt = true; | ||
| 152 | } | ||
| 153 | |||
| 154 | @Override | ||
| 155 | public void threadDeath(ThreadDeathEventSet e) { | ||
| 156 | wantInterrupt = false; | ||
| 157 | } | ||
| 158 | |||
| 159 | @Override | ||
| 160 | public void threadStart(ThreadStartEventSet e) { | ||
| 161 | wantInterrupt = false; | ||
| 162 | } | ||
| 163 | |||
| 164 | @Override | ||
| 165 | public void vmDeath(VMDeathEventSet e) { | ||
| 166 | //### Should have some way to notify user | ||
| 167 | //### that VM died before the session ended. | ||
| 168 | wantInterrupt = false; | ||
| 169 | } | ||
| 170 | |||
| 171 | @Override | ||
| 172 | public void vmDisconnect(VMDisconnectEventSet e) { | ||
| 173 | //### Notify user? | ||
| 174 | wantInterrupt = false; | ||
| 175 | session.runtime.endSession(); | ||
| 176 | } | ||
| 177 | |||
| 178 | @Override | ||
| 179 | public void vmStart(VMStartEventSet e) { | ||
| 180 | //### Do we need to do anything with it? | ||
| 181 | wantInterrupt = false; | ||
| 182 | } | ||
| 183 | } | ||
| 184 | } | ||