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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 | +} | |