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| 1 | +/* | |
| 2 | + * Copyright (c) 2005, 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.jdi; | |
| 27 | + | |
| 28 | +import java.io.IOException; | |
| 29 | +import java.io.UnsupportedEncodingException; | |
| 30 | +import java.util.Map; | |
| 31 | +import java.util.Properties; | |
| 32 | + | |
| 33 | +import com.sun.jdi.Bootstrap; | |
| 34 | +import com.sun.jdi.VirtualMachine; | |
| 35 | +import com.sun.jdi.connect.*; | |
| 36 | +import com.sun.jdi.connect.spi.*; | |
| 37 | + | |
| 38 | +/* | |
| 39 | + * An AttachingConnector that connects to a debuggee by specifying the process | |
| 40 | + * id (pid) as the connector argument. If the process is a debuggee listening | |
| 41 | + * on a transport address then this connector reads the transport address | |
| 42 | + * and attempts to attach to it using the appropriate transport. | |
| 43 | + */ | |
| 44 | + | |
| 45 | +public class ProcessAttachingConnector | |
| 46 | + extends ConnectorImpl implements AttachingConnector | |
| 47 | +{ | |
| 48 | + /* | |
| 49 | + * The arguments that this connector supports | |
| 50 | + */ | |
| 51 | + static final String ARG_PID = "pid"; | |
| 52 | + static final String ARG_TIMEOUT = "timeout"; | |
| 53 | + | |
| 54 | + com.sun.tools.attach.VirtualMachine vm; | |
| 55 | + Transport transport; | |
| 56 | + | |
| 57 | + public ProcessAttachingConnector() { | |
| 58 | + addStringArgument( | |
| 59 | + ARG_PID, | |
| 60 | + getString("process_attaching.pid.label"), | |
| 61 | + getString("process_attaching.pid"), | |
| 62 | + "", | |
| 63 | + true); | |
| 64 | + | |
| 65 | + addIntegerArgument( | |
| 66 | + ARG_TIMEOUT, | |
| 67 | + getString("generic_attaching.timeout.label"), // use generic keys to keep | |
| 68 | + getString("generic_attaching.timeout"), // resource bundle small | |
| 69 | + "", | |
| 70 | + false, | |
| 71 | + 0, Integer.MAX_VALUE); | |
| 72 | + | |
| 73 | + transport = new Transport() { | |
| 74 | + public String name() { | |
| 75 | + return "local"; | |
| 76 | + } | |
| 77 | + }; | |
| 78 | + } | |
| 79 | + | |
| 80 | + | |
| 81 | + /** | |
| 82 | + * Attach to a target VM using the specified address and Connector arguments. | |
| 83 | + */ | |
| 84 | + public VirtualMachine attach(Map<String,? extends Connector.Argument> args) | |
| 85 | + throws IOException, IllegalConnectorArgumentsException | |
| 86 | + { | |
| 87 | + String pid = argument(ARG_PID, args).value(); | |
| 88 | + String t = argument(ARG_TIMEOUT, args).value(); | |
| 89 | + int timeout = 0; | |
| 90 | + if (t.length() > 0) { | |
| 91 | + timeout = Integer.decode(t).intValue(); | |
| 92 | + } | |
| 93 | + | |
| 94 | + // Use Attach API to attach to target VM and read value of | |
| 95 | + // sun.jdwp.listenAddress property. | |
| 96 | + | |
| 97 | + String address = null; | |
| 98 | + com.sun.tools.attach.VirtualMachine vm = null; | |
| 99 | + try { | |
| 100 | + vm = com.sun.tools.attach.VirtualMachine.attach(pid); | |
| 101 | + Properties props = vm.getAgentProperties(); | |
| 102 | + address = props.getProperty("sun.jdwp.listenerAddress"); | |
| 103 | + } catch (Exception x) { | |
| 104 | + throw new IOException(x.getMessage()); | |
| 105 | + } finally { | |
| 106 | + if (vm != null) vm.detach(); | |
| 107 | + } | |
| 108 | + | |
| 109 | + // check that the property value is formatted correctly | |
| 110 | + | |
| 111 | + if (address == null) { | |
| 112 | + throw new IOException("Not a debuggee, or not listening for debugger to attach"); | |
| 113 | + } | |
| 114 | + int pos = address.indexOf(':'); | |
| 115 | + if (pos < 1) { | |
| 116 | + throw new IOException("Unable to determine transport endpoint"); | |
| 117 | + } | |
| 118 | + | |
| 119 | + // parse into transport library name and address | |
| 120 | + | |
| 121 | + final String lib = address.substring(0, pos); | |
| 122 | + address = address.substring(pos+1, address.length()); | |
| 123 | + | |
| 124 | + TransportService ts = null; | |
| 125 | + if (lib.equals("dt_socket")) { | |
| 126 | + ts = new SocketTransportService(); | |
| 127 | + } else { | |
| 128 | + if (lib.equals("dt_shmem")) { | |
| 129 | + try { | |
| 130 | + Class c = Class.forName("com.sun.tools.jdi.SharedMemoryTransportService"); | |
| 131 | + ts = (TransportService)c.newInstance(); | |
| 132 | + } catch (Exception x) { } | |
| 133 | + } | |
| 134 | + } | |
| 135 | + if (ts == null) { | |
| 136 | + throw new IOException("Transport " + lib + " not recognized"); | |
| 137 | + } | |
| 138 | + | |
| 139 | + // connect to the debuggee | |
| 140 | + | |
| 141 | + Connection connection = ts.attach(address, timeout, 0); | |
| 142 | + return Bootstrap.virtualMachineManager().createVirtualMachine(connection); | |
| 143 | + } | |
| 144 | + | |
| 145 | + public String name() { | |
| 146 | + return "com.sun.jdi.ProcessAttach"; | |
| 147 | + } | |
| 148 | + | |
| 149 | + public String description() { | |
| 150 | + return getString("process_attaching.description"); | |
| 151 | + } | |
| 152 | + | |
| 153 | + public Transport transport() { | |
| 154 | + if (transport == null) { | |
| 155 | + return new Transport() { | |
| 156 | + public String name() { | |
| 157 | + return "local"; | |
| 158 | + } | |
| 159 | + }; | |
| 160 | + } | |
| 161 | + return transport; | |
| 162 | + } | |
| 163 | + | |
| 164 | +} | |