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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 | } | ||