1 /* 2 * Copyright (c) 2005, 2011, 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 ProcessAttachingConnector()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 */ attach(Map<String,? extends Connector.Argument> args)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 name()145 public String name() { 146 return "com.sun.jdi.ProcessAttach"; 147 } 148 description()149 public String description() { 150 return getString("process_attaching.description"); 151 } 152 transport()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 } 165